CN115816109A - Special-shaped crankshaft machining tool - Google Patents

Abstract

The invention discloses a special-shaped crankshaft machining tool, relates to the technical field of crankshaft machining, and comprises a U-shaped seat, a motor, an arc-shaped top plate, a supporting assembly, an adjusting assembly and a clamping assembly. According to the crankshaft automatic clamping tool, the automatic clamping and automatic clamping releasing operation of a crankshaft can be realized by arranging the arc-shaped top plate and the clamping assembly, the crankshaft does not need to be supported after being placed by arranging the supporting assembly, the working strength of workers can be effectively reduced compared with the traditional manual clamping operation, the drilling working efficiency of the crankshaft can be further improved, the clamping assembly and the limiting unit can be adjusted by arranging the adjusting assembly, so that the crankshaft automatic clamping tool can adapt to crankshafts with different diameters, the height of the annular transmission case can be adjusted, the limitation of journals with different heights can be adapted, and the application range of the tool is effectively enlarged.

Description

A special-shaped crankshaft processing tool

technical field

The invention relates to the technical field of crankshaft processing, in particular to a special-shaped crankshaft processing tool.

Background technique

The crankshaft is a heavy-duty part with two or more sections of outer circles whose centerlines are parallel and do not overlap on the same shaft. The unique structural features of the crankshaft can realize different mechanical actions. Its material is made of carbon structural steel or ductile iron It is mainly composed of journal, connecting rod neck and balance weight. The main journal is installed on the cylinder block, the connecting rod neck is connected with the big end hole of the connecting rod, and the small head hole of the connecting rod is connected with the cylinder piston. It is a typical slider crank mechanism.

The processing process of the crankshaft is as follows: Milling the end face and punching the center hole (processing in the blank factory) - blank on the line, inspection - turning the outer circle of the thrust shaft - rough grinding the outer circle of the thrust journal - rough machining of the main journal - rough machining of both ends of the journal - Rough machining of connecting rod neck - Oil hole machining - Intermediate cleaning - Heat treatment - Straightening - Thrust surface grinding - Journal grinding - Threaded holes at both ends, positioning pin hole processing - Keyway milling - Dynamic balance - Flaw detection - Polishing - Cleaning-off-line inspection. When processing the threaded holes and positioning pin holes at both ends of the crankshaft, the crankshaft is generally clamped by a turntable fixture, that is, a plurality of circularly distributed triangular claws are arranged on the upper end of a turntable The circular operation of multiple triangular claw discs can be realized through the rotation of the turntable driven by the motor. Multiple crankshafts can be processed at the same time through multiple triangular claw discs. At the same time, multiple stations can be realized through the intermittent operation of multiple triangular claw discs. Simultaneous processing, so that drilling, sinking, chamfering, tapping and other operations can be performed in sequence, and the last blank station is used for retrieving and loading operations, which has high work efficiency, but this clamping method still has the following problems :

The clamping and unclamping of the crankshaft by the triangular claw disc are mostly operated manually. In order to ensure the firmness of the triangular claw disc during each operation, the staff need to spend a lot of effort to tighten the operation. Also just cause when carrying out clamping and also need to expend greater strength and just can finish, so not only cause the staff's workload big, easily fatigued.

Contents of the invention

The purpose of the present invention is to provide a special-shaped crankshaft machining method in order to solve the problem that the traditional triangular claw disc manual clamping and unclamping operations lead to a large workload and fatigue of the staff when machining the holes at both ends of the crankshaft. tooling.

In order to achieve the above object, the present invention provides the following technical solutions: a special-shaped crankshaft processing tool, including a U-shaped seat and a motor installed inside the U-shaped seat, an arc-shaped top plate is fixed on the top of the U-shaped seat, and the U-shaped The top of the seat is located on the inside of the arc-shaped top plate, and a support assembly is provided. The support assembly includes a rotating seat arranged on the top of the U-shaped seat and inside the arc-shaped top plate. The output end of the motor penetrates to the top of the U-shaped seat and rotates. The bottom end of the seat is fixedly connected, the inner side of the rotating seat is sleeved with a first lifting seat, the top of the first lifting seat is fixedly connected with a fixed rod, and the top end of the fixed rod extends to the top of the rotating seat and is sleeved with a The third lifting seat, the outer wall of the fixed rod is fixedly connected with the second lifting seat, the second lifting seat is located in the middle of the third lifting seat and the rotating seat, and the outer wall of the third lifting seat is fixedly connected with the annular transmission box;

The inside of the rotating seat, the third lifting seat, and the ring transmission box are distributed with adjustment components for adjusting the height of the second lifting seat and the third lifting seat. The top of the rotating seat is provided with automatic clamping, A clamping assembly for automatically unclamping, the adjustment assembly includes a worm unit, a lifting unit, a limit unit and a drive assembly;

Wherein, the worm unit includes a first worm, a second worm, a third worm, and a fixed shaft that are distributed horizontally and horizontally in sequence, the first worm extends through to the outer end of the rotating seat, and the first worm, the second worm The second worm and the third worm are installed on the top of the first lifting seat through the base. The inside of the first worm is provided with an insertion hole, a first polygonal groove, and a first circular groove in sequence. A second circular groove and a second polygonal groove are sequentially provided inside, and a third circular groove and a third polygonal groove are sequentially provided inside the third worm;

Wherein, the lifting unit includes a first worm gear meshed above the first worm, the two sides of the first worm wheel are connected with a linkage gear through a connecting shaft, one end of the linkage gear is engaged with a linkage rack, and the linkage gear The bottom end of the bar penetrates to the bottom of the first lifting seat and is fixedly connected with the bottom end of the inner wall of the rotating seat;

Wherein, the limiting unit includes a second worm gear engaged on one side of the second worm and a second worm gear engaged on one side of the third worm, the inner wall of the second worm gear is fixedly connected with a The transmission screw above the third lifting seat, the inner wall of the second worm wheel is fixedly connected with a rotating column that penetrates above the second lifting seat, the top of the rotating column is fixedly connected with a connecting column, and the top end of the connecting column covers Connected with a lifting shaft, the top of the lifting shaft penetrates to the inside of the third lifting seat and is connected with a transmission gear. The inside of the driven gear ring is sleeved with a limit clip extending to the bottom of the ring transmission box;

Wherein, the drive assembly includes a T-shaped handle and a drive shaft, and the drive shaft passes through the first worm, the second worm, and the third worm in sequence from the inside of the insertion hole and extends to the inside of the fixed shaft, and the outer wall of the drive shaft is located at The first worm, the second worm, and the third worm are fixedly connected with the first polygonal block, the second polygonal block, and the third polygonal block in turn, and the drive shaft is located inside the fixed shaft and is connected with the rotating block. , one end of the rotating block inside the fixed shaft is provided with a return spring;

Wherein, the clamping assembly includes a fixed ring seat fixed on the top of the second lifting seat, a fixed clamp block is arranged on the top end of the fixed ring seat, and a fixed clamp block is fixedly connected to the bottom end of the fixed clamp block and penetrates into the fixed ring seat. An extrusion block, one side of the extrusion block is provided with a compression spring, and the bottom end of the other side of the extrusion block is provided with an extrusion ring, and the bottom end of the extrusion ring is fixedly connected with a The extrusion column under the seat is located outside the second lifting seat and directly above the arc top plate.

As a further solution of the present invention: the connecting shaft connected to the first worm wheel is installed on the top of the first lifting seat through the base, and the bottom end of the inner wall of the rotating seat is also fixedly connected with a limited square column, and the linkage rack Two space-limiting square columns are arranged parallel to each other and symmetrically arranged, and the inside of the first lifting seat is provided with a lifting groove for the linkage rack and the space-limiting square column to slide up and down.

As a further solution of the present invention: the transmission screw is connected to the rotating seat and the second lifting seat through bearings, and the outer wall of the driving screw located above the second lifting seat is formed with external threads, and the inner wall of the third lifting seat An internal thread groove matching the external thread of the transmission screw rod is formed, and the inside of the third lifting seat is provided with a limit chute matching the outer wall of the fixing rod. The fixing rod is provided with a plurality of The fixed rod and the transmission screw rod are distributed in a ring shape with the center point of the rotating seat as the center.

As a further solution of the present invention: one end of the drive shaft located inside the first worm is provided with a polygonal socket, the insertion hole is composed of three circular holes with decreasing diameters in turn, and the three ends of the T-shaped handle The heads are respectively fixed with sleeves matching the three round holes, and the inside of the sleeves is fixedly connected with a polygonal wrench matching the polygonal socket.

As a further solution of the present invention: the rotating column is rotatably connected with the rotating seat and the second lifting seat through bearings, the top view section of the connecting column is in the shape of a "cross", and the inside of the lifting shaft is provided with a The shrinkage slot where the connecting column slides, the number of the limiting clips is set in multiples, and the plurality of the limiting clips are distributed in a ring around the center of the driven gear ring, and the driven gear ring and the limiting There is an arc-shaped groove at the contact position of the clamp block, a square block is fixed at the contact position between the outer wall of the limit clamp block and the bottom end of the inner wall of the annular transmission box, and a square block is fixed at the contact position of the annular transmission box and the limit clamp block. There are moving slots for the horizontal movement of the limit clamp block and the square block.

As a further solution of the present invention: the first polygonal block is matched with the first polygonal groove, the second polygonal block is matched with the third polygonal groove, and the The inner wall dimensions of the first circular groove, the second circular groove, and the third circular groove are respectively greater than the inner wall dimensions of the first polygonal groove, the second polygonal groove, and the third polygonal groove, and the first circular groove is located at The first polygonal groove is close to one end of the second worm, the number of the second circular groove is set to two, and the two second circular grooves are symmetrically distributed at both ends of the second polygonal groove, and the first circular groove is symmetrically distributed at both ends of the second polygonal groove. The three circular grooves are located at one end of the third polygonal groove close to the second worm.

As a further solution of the present invention: the first polygonal groove and the first circular groove, the second polygonal groove and the second circular groove, and the third polygonal groove and the third circular groove are all provided with Horn constriction groove, the overall length of the first polygonal groove and the horn constriction groove matches the length of a second circular groove, one of the second circular groove, two horn constriction grooves and the second polygonal groove The overall length matches the length of the third circular groove.

As a further solution of the present invention: the inside of the fixed shaft is provided with a movable slot for the telescopic movement of the rotating block and the return spring, and the fixed shaft is fixedly connected to the top of the first lifting seat through the fixed seat.

As a further solution of the present invention: the mutual contact surfaces of the extruding block and the extruding ring are in an inclined structure, the bottom end of the extruding column is in a spherical structure, and the fixed clamp block, extruding block, compression spring There are multiple sets of them and they are distributed in a circular shape with the center of the fixed ring seat as the center. The position where the fixed ring seat is in contact with the extruded block is provided with a horizontal movement groove for the extruded block to move horizontally. The arc The top at the notch of the top plate is an arc-shaped surface.

Compared with prior art, the beneficial effect of the present invention is:

The automatic clamping and automatic unclamping of the crankshaft can be realized by setting the arc-shaped top plate and the clamping component. The setting of the support component can make the crankshaft no need to be supported after being placed, which is different from the traditional manual clamping operation and can effectively reduce the work. At the same time, it can further improve the drilling efficiency of the crankshaft. By adjusting the setting of the component, the clamping component and the limit unit can be adjusted, so that it can adapt to crankshafts of different diameters. At the same time, the ring transmission box can be adjusted The height can be adjusted so as to be able to adapt to the limit of journals of different heights, thereby effectively improving the application range of the tooling.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural exploded view of the present invention;

3 is a sectional view of the internal structure of the rotating seat of the present invention;

Fig. 4 is a connection diagram of the first lifting base, the second lifting base and the third lifting base of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the second lifting seat and the annular transmission box of the present invention;

Fig. 6 is a structural exploded view of the limiting unit of the present invention;

Fig. 7 is an exploded top view of the limiting unit of the present invention;

Fig. 8 is a schematic diagram of some parts of the worm unit, the lifting unit and the limiting unit of the present invention;

Fig. 9 is a structural sectional view of the worm unit of the present invention;

Fig. 10 is a sectional exploded view of the worm unit and the drive unit of the present invention;

Fig. 11 is a structural sectional view of the clamping assembly of the present invention.

In the figure: 1. U-shaped seat; 2. Motor; 3. Arc top plate; 4. Support component; 5. Adjustment component; 6. Clamping component;

401, rotating seat; 402, the first lifting seat; 403, fixed rod; 404, the second lifting seat; 405, the third lifting seat; 406, ring transmission box;

501, worm unit; 502, lifting unit; 503, limit unit; 504, drive assembly;

5011, the first worm; 5012, the second worm; 5013, the third worm; 5014, the fixed shaft; 5015, the first polygonal groove; 5016, the first circular groove; 5017, the second circular groove; 5018, the second Polygonal groove; 5019, third circular groove; 50110, third polygonal groove; 50111, socket hole;

5021, the first worm gear; 5022, linkage gear; 5023, linkage rack; 5024, limit square column;

5031, second worm gear; 5032, third worm gear; 5033, transmission screw; 5034, rotating column; 5035, connecting column; 5036, lifting shaft; 5037, transmission gear; 5038, driven gear ring; 5039, limit clamp piece;

5041, drive shaft; 5042, first polygonal block; 5043, second polygonal block; 5044, third polygonal block; 5045, rotating block; 5046, return spring; 5047, T-shaped handle; 5048, Polygon wrench; 5049, polygon socket;

601, fixed ring seat; 602, fixed clip block; 603, extrusion block; 604, extrusion ring; 605, extrusion column; 606, compression spring.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", "connection" and "setting" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. The embodiments of the present invention will be described below according to the overall structure of the present invention.

Please refer to Fig. 1 to Fig. 11, in the embodiment of the present invention, a special-shaped crankshaft processing tool includes a U-shaped seat 1 and a motor 2 installed inside the U-shaped seat 1, and an arc-shaped top plate 3 is fixed on the top of the U-shaped seat 1 The top of the U-shaped seat 1 is located on the inner side of the arc-shaped top plate 3, and a support assembly 4 is provided. The support assembly 4 includes a rotating seat 401 arranged on the top of the U-shaped seat 1 and inside the arc-shaped top plate 3. The output end of the motor 2 penetrates to The top of the U-shaped seat 1 is fixedly connected with the bottom end of the rotating seat 401, the inner side of the rotating seat 401 is sleeved with a first lifting seat 402, the top of the first lifting seat 402 is fixedly connected with a fixed rod 403, and the top of the fixed rod 403 extends A third lifting base 405 is socketed above the rotating base 401, and the outer wall of the fixed rod 403 is fixedly connected with a second lifting base 404. The second lifting base 404 is located in the middle of the third lifting base 405 and the rotating base 401. The third lifting base The outer wall of 405 is fixedly connected with an annular transmission box 406;

The inner distribution of the rotating seat 401, the third lifting seat 405, and the annular transmission box 406 has an adjustment assembly 5 for adjusting the height of the second lifting seat 404 and the third lifting seat 405. The top of the rotating seat 401 is provided with an automatic crankshaft. The clamping assembly 6 for clamping and automatically unclamping, the adjusting assembly 5 includes a worm unit 501, a lifting unit 502, a limiting unit 503 and a driving assembly 504;

Wherein, the worm unit 501 includes a first worm 5011, a second worm 5012, a third worm 5013, and a fixed shaft 5014 which are distributed horizontally and horizontally in sequence. , The second worm 5012 and the third worm 5013 are installed on the top of the first lifting seat 402 through the base, and the inside of the first worm 5011 is sequentially provided with an insertion hole 50111, a first polygonal groove 5015, and a first circular groove 5016 , the inside of the second worm 5012 is provided with a second circular groove 5017 and a second polygonal groove 5018 in sequence, and the inside of the third worm 5013 is provided with a third circular groove 5019 and a third polygonal groove 50110 in sequence;

Wherein, the lifting unit 502 includes a first worm gear 5021 meshing above the first worm 5011, the two sides of the first worm gear 5021 are connected with a linkage gear 5022 through a connecting shaft, one end of the linkage gear 5022 is engaged with a linkage rack 5023, and the linkage rack The bottom end of 5023 penetrates to the bottom of the first lifting seat 402 and is fixedly connected with the bottom end of the inner wall of the rotating seat 401;

Wherein, the limiting unit 503 includes a second worm gear 5031 engaged on one side of the second worm 5012 and a third worm gear 5032 engaged on one side of the third worm 5013. The inner wall of the second worm gear 5031 is fixedly connected with a And extend to the transmission screw 5033 above the third lifting seat 405, the inner wall of the third worm wheel 5032 is fixedly connected with a rotating column 5034 that penetrates to the top of the second lifting seat 404, and the top of the rotating column 5034 is fixedly connected with a connecting column 5035, connected The top of the column 5035 is sleeved with a lifting shaft 5036, and the top of the lifting shaft 5036 penetrates to the third lifting seat 405 and is connected with a transmission gear 5037. The outer side of the transmission gear 5037 is meshed with a driven gear ring 5038, which is located in the ring. The inside of the transmission box 406 and the inside of the driven gear ring 5038 are sleeved with a limiting clip 5039 extending below the annular transmission box 406;

Wherein, the drive assembly 504 includes a T-shaped handle 5047 and a drive shaft 5041. The drive shaft 5041 runs through the first worm 5011, the second worm 5012, and the third worm 5013 from the inside of the insertion hole 50111 and extends to the inside of the fixed shaft 5014, and drives The outer wall of the shaft 5041 is located inside the first worm 5011, the second worm 5012, and the third worm 5013, and is fixedly connected with the first polygonal block 5042, the second polygonal block 5043, the third polygonal block 5044, and the drive shaft 5041. A rotating block 5045 is rotatably connected inside the fixed shaft 5014, and a return spring 5046 is provided at one end of the rotating block 5045 inside the fixed shaft 5014;

Wherein, the clamping assembly 6 includes a fixed ring seat 601 fixed on the top of the second lifting seat 404, and the fixed ring seat 601 is located directly below the ring transmission box 406, and the top of the fixed ring seat 601 is provided with a fixed clip block 602, the fixed clip The bottom end of the block 602 is fixedly connected with an extrusion block 603 that penetrates into the fixed ring seat 601. A compression spring 606 is provided on one side of the extrusion block 603, and an extrusion ring 604 is provided at the bottom end of the other side of the extrusion block 603. , the bottom end of the extrusion ring 604 is fixedly connected with an extrusion column 605 penetrating below the fixed ring seat 601 , the extrusion column 605 is located outside the second lifting seat 404 and directly above the arc-shaped top plate 3 ;

The sides of the extruding block 603 and the extruding ring 604 in contact with each other are in an inclined structure, and the bottom end of the extruding column 605 is in a spherical structure. The center of the fixed ring base 601 is distributed in a circular shape around the center, and the position where the fixed ring base 601 contacts the extruding block 603 is provided with a horizontal movement groove for the extruding block 603 to move horizontally, and the top of the arc-shaped top plate 3 gap is arc-shaped. shape.

In this embodiment: this frock can be placed on the next drilling device when in use, and the quantity of its clamping assembly 6 can be set according to the operation of the drilling device, and the quantity of clamping assembly 6 is the drilling procedure. Add another blank station;

When drilling the end of the crankshaft, the end of the crankshaft to be processed can be turned up, and the other end can be passed down through the middle hole groove of the ring transmission box 406, and the other end can be inserted into the inside of the fixed ring seat 601, and then the Loosen the crankshaft. At this time, a balance weight on the crankshaft will be located in the middle hole of the fixed ring seat 601. At the same time, a plurality of limit clamps 5039 can limit the crankshaft, which can prevent the crankshaft from dumping;

Afterwards, the motor 2 is started by the external controller, and the operation of the motor 2 drives the rotating seat 401 to rotate a station and then stops. At this time, the fixed ring seat 601 on which the crankshaft is placed is driven to rotate to the first station, and the other fixed ring seat 601 rotates to the first station. Turn to the blank station. At this time, the second crankshaft can be placed inside the fixed ring seat 601, and when the first fixed ring seat 601 is rotated to the first station, the extrusion column 605 below it The synchronous rotation and the extrusion of the arc-shaped top plate 3, and the extrusion column 605 will be pressed by the arc-shaped top plate 3 to move upward, the extrusion column 605 can push the extrusion ring 604 to move upward, and the extrusion ring 604 can be extruded through the inclined surface The extrusion block 603 moves to the inner side of the fixed ring seat 601, the extrusion block 603 can drive the fixed clamp block 602 to move towards the crankshaft direction, and squeeze the compression spring 606 to shrink, and the movement of multiple fixed clamp blocks 602 can realize the fixing of the bottom end of the crankshaft Clamping, so as to facilitate the drilling of the crankshaft. After the drilling of the first station is completed, the motor 2 can be restarted to run. Repeating this operation can realize the continuous operation of multiple drilling processes of the crankshaft. Simultaneously realize For the automatic clamping operation of the crankshaft, when the crankshaft that has completed all the processes is rotated to the blank station by the rotating seat 401, the extrusion column 605 on the fixed ring seat 601 on the blank station is located at the gap of the arc-shaped top plate 3, That is to say, the extrusion column 605 loses the extrusion force. At this time, the compression spring 606 resets to push the extrusion block 603 to reset, and the extrusion block 603 drives the fixed clamp block 602 to move to the outside, thereby releasing the clamping of the crankshaft, and then realizing the crankshaft. The operation of automatic unclamping, the automatic clamping and automatic unclamping operation of the crankshaft can be realized through the cooperation of the above multiple parts, which is different from the traditional manual clamping operation, which can effectively reduce the working intensity of the staff and can further improve Crankshaft drilling efficiency.

Please refer to Figures 3 to 10. The connecting shaft connected to the first worm gear 5021 is installed on the top of the first lifting seat 402 through the base. Limiting square posts 5024 are provided with two and mutually parallel and symmetrically arranged, and the inside of first lifting seat 402 is provided with the lift groove for linkage rack 5023, space-limiting square posts 5024 sliding up and down; 1. The second lifting seat 404 is connected by bearing rotation and the outer wall of the transmission screw 5033 located above the second lifting seat 404 is formed with external threads, and the inner wall of the third lifting seat 405 is formed with internal threads matching the external threads of the transmission screw 5033 slot, the inside of the third lifting seat 405 is provided with a limit chute matching with the outer wall of the fixed rod 403, and the fixed rod 403 is provided with a plurality, and the center point of the rotating seat 401 is the center point of the plurality of fixed rods 403 and the transmission screw rod 5033 The center is distributed in a ring; the rotating column 5034 is respectively rotatably connected with the rotating seat 401 and the second lifting seat 404 through bearings. There are multiple shrinkage grooves, and the number of limiting clips 5039 is arranged in multiples, and the plurality of limiting clips 5039 are distributed in a ring around the center of the driven gear ring 5038, and the driven gear ring 5038 is in contact with the limiting clips 5039 There is an arc-shaped groove at the position, a square block is fixed at the position where the outer wall of the limit clamp block 5039 contacts with the bottom end of the inner wall of the annular transmission box 406, and a supply limiter is provided at the position where the ring transmission box 406 contacts the limit clamp block 5039. Position clamping block 5039, moving slot for horizontal movement of square block;

One end of the drive shaft 5041 located inside the first worm 5011 is provided with a polygonal socket 5049, the insertion hole 50111 is composed of three circular holes with decreasing diameters in turn, and the three ends of the T-shaped handle 5047 are respectively fixed with three circular holes. A matching sleeve, and a polygonal wrench 5048 matching the polygonal socket 5049 is fixedly connected inside the sleeve; the first polygonal block 5042 and the first polygonal groove 5015, the second polygonal blocks 5043 and 508, The third polygonal block 5044 matches the third polygonal groove 50110, and the inner wall dimensions of the first circular groove 5016, the second circular groove 5017, and the third circular groove 5019 are respectively larger than the first polygonal groove 5015, the second The inner wall dimensions of the polygonal groove 5018 and the third polygonal groove 50110, the first circular groove 5016 is located at the end of the first polygonal groove 5015 close to the second worm 5012, the number of the second circular groove 5017 is set to two, The two second circular grooves 5017 are symmetrically distributed at both ends of the second polygonal groove 5018 , and the third circular groove 5019 is located at one end of the third polygonal groove 50110 close to the second worm 5012 .

In this embodiment: when this frock is in use, the height of the ring transmission box 406, the limit aperture size of the limit clamp block 5039, and the clamp aperture size of the fixed clamp block 602 can be adjusted respectively, so that different types of The crankshaft is clamped;

Wherein, when the diameter of the crankshaft journal changes, the size of the clamping aperture of the fixed clamp block 602 can be adjusted, and the operator can first align the sleeve with the largest aperture on the T-shaped handle 5047 with the insertion hole 50111 and insert it. After the polygonal wrench 5048 on the T-shaped handle 5047 is inserted into the polygonal socket 5049, it cannot move. At this time, the drive shaft 5041 is not moved under force, and its first polygonal block 5042 is engaged with the first polygonal groove 5015. The second The polygonal block 5043 is located inside the second circular groove 5017, the third polygonal block 5044 is located inside the third circular groove 5019, and then the T-shaped handle 5047 is rotated. At this time, the T-shaped handle 5047 passes through the polygonal wrench 5048, the polygonal socket 5049, The drive shaft 5041, the first polygonal block 5042, and the transmission of the first polygonal groove 5015 can drive the first worm 5011 to rotate, while the second worm 5012 and the third worm 5013 remain motionless, and the first worm 5011 can drive The first worm gear 5021 rotates, and the first worm gear 5021 can drive the interlocking gear 5022 to rotate. Since the interlocking rack 5023 is fixedly connected with the rotating seat 401 and cannot move, the interlocking gear 5022 can move up and down along the outer wall of the interlocking rack 5023 when rotating. Thereby driving the first lifting base 402 to move up and down, the first lifting base 402 can drive the second lifting base 404 and the third lifting base 405 to move up and down synchronously through the cooperation of the fixed rod 403 and the transmission screw mandrel 5033, wherein the second lifting base 404 moves up and down The distance adjustment between the bottom end of the extruding column 605 and the top end of the arc-shaped top plate 3 can be realized by moving, and the adjustment of the upward moving distance of the extruding ring 604 can be realized through the adjustment of this distance, thereby realizing the moving distance of the fixed clamp block 602 adjustment, and then realize the adjustment of the clamping diameter of the fixed clamp block 602;

Among them, when the height of the crankshaft journal changes, the height of the annular transmission box 406 can be adjusted to adapt to the change. At this time, the middle-diameter sleeve of the T-shaped handle 5047 can be inserted into the insertion hole 50111. After the polygonal wrench 5048 is inserted into the polygonal socket 5049, the T-shaped handle 5047 can be continuously pushed to move. At this time, the T-shaped handle 5047 can squeeze the driving shaft 5041 to move, and the driving shaft 5041 can drive the first polygonal block 5042 to move to the first circular groove Inside 5016, the second polygonal piece 5043 moves to the inside of the second polygonal groove 5018, while the third polygonal piece 5044 is still located inside the third circular groove 5019. At this time, the T-shaped handle 5047 is turned, and the polygonal wrench 5048 , polygonal socket 5049, drive shaft 5041, the second polygonal block 5043, the transmission of the second polygonal slot 5018 can drive the second worm 5012 to rotate, its first worm 5011, the third worm 5013 remain motionless, the second The second worm 5012 can drive the transmission screw 5033 to rotate through the transmission of the second worm wheel 5031. Since the third lifting seat 405 is provided with an internal thread groove and at the same time under the limit action of the fixed rod 403, the transmission screw 5033 can drive the second screw when rotating. The three lifting seats 405 and the annular transmission box 406 move up and down synchronously, thereby realizing the adjustment of the distance between the annular transmission box 406 and the fixed ring seat 601, thereby adapting to the height change of the journal;

Simultaneously, when the diameter of the crankshaft journal changes, it is also necessary to adjust the limit aperture size of the limit clamp block 5039. The limit aperture size of the limit clamp block 5039 is slightly larger than the crankshaft journal, thereby facilitating the crankshaft journal Insertion is also convenient to limit the crankshaft journal and prevent the crankshaft from toppling over. The sleeve with the smallest aperture on the T-shaped handle 5047 can be aligned with the insertion hole 50111 and inserted. After the polygonal wrench 5048 is inserted into the polygonal socket 5049, you can continue to push the T Type handle 5047 moves, and T-type handle 5047 can promote drive shaft 5041 to move to the maximum position, and its first polygonal block 5042 moves to the inside of first circular groove 5016, and second polygonal block 5043 passes through the second polygonal The slot 5018 moves to the inside of the second second round slot 5017, and the third polygonal block 5044 moves to the inside of the third polygonal slot 50110. At this time, the T-shaped handle 5047 is turned, and the polygonal wrench 5048, the polygonal socket 5049, The transmission of the drive shaft 5041, the third polygonal block 5044, and the third polygonal groove 50110 can drive the third worm 5013 to rotate, the first worm 5011 and the second worm 5012 remain stationary, and the third worm 5013 passes through the third worm 5013. The transmission of worm gear 5032, rotating post 5034, connecting post 5035, and lifting shaft 5036 can drive transmission gear 5037 to rotate, and transmission gear 5037 can drive multiple driven gear rings 5038 to rotate. The cooperation of the moving grooves provided on the annular transmission case 406 can make the plurality of limiting clips 5039 move along the inner wall of the moving groove when the driven gear ring 5038 rotates, thereby realizing the positioning of the multiple limiting clips 5039. Aperture adjustment;

Through the operation of the above multiple steps, the positioning and clamping of different types of crankshafts can be realized, thereby effectively improving the scope of application of this tooling.

Please refer to Figures 9 to 10, the first polygonal groove 5015 and the first circular groove 5016, the second polygonal groove 5018 and the second circular groove 5017, and the third polygonal groove 50110 and the third circular groove 5019 Horn contraction grooves are arranged between them, the overall length of the first polygonal groove 5015 and the horn contraction groove matches the length of a second circular groove 5017, a second circular groove 5017, two horn contraction grooves and the second The overall length of the polygonal groove 5018 matches the length of the third circular groove 5019;

The inside of the fixed shaft 5014 is provided with a movable groove for the telescopic movement of the rotating block 5045 and the return spring 5046, and the fixed shaft 5014 is fixedly connected with the top of the first lifting seat 402 through the fixed seat.

In this embodiment: the first polygonal block 5042 can enter the first polygonal slot 5015 from the first round slot 5016 through the horn contraction slot, and the second polygonal block 5043 can enter from the second round slot 5017 into the When the second polygonal groove 5018 and the third polygonal block 5044 enter the third polygonal groove 50110 from the third circular groove 5019, the polygonal block can automatically calibrate the force deflection during the movement, thereby realizing The automatic docking of the polygonal block and the polygonal groove can make the drive shaft 5041 lose extrusion through the return spring 5046, and the drive shaft 5041 can automatically reset, thereby facilitating subsequent adjustment operations. By rotating the block 5045, the contact between the drive shaft 5041 and the return spring 5046 can be avoided. wear between them, thereby reducing the rotational friction of the drive shaft 5041, thereby facilitating the automatic reset of the drive shaft 5041. It should be noted that: the first worm 5011, the second worm 5012, and the third worm 5013 correspond to the There is a relatively large friction force between the seats, and the rotating seat 401 can be kept still during the rotation process, and in the adjustment process, when one worm is rotated, the other two worms can also be kept still, and the drive shaft 5041 During the automatic reset process, the frictional force between the worm and the base can also prevent the force on the worm from shifting.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technology of the present invention Any equivalent replacement or change of the scheme and its inventive concepts shall fall within the protection scope of the present invention.

Claims (9)

1. The special-shaped crankshaft machining tool comprises a U-shaped seat (1) and a motor (2) installed on the inner side of the U-shaped seat (1), and is characterized in that an arc-shaped top plate (3) is fixed to the top of the U-shaped seat (1), a supporting assembly (4) is arranged on the inner side, located on the arc-shaped top plate (3), of the top of the U-shaped seat (1), the supporting assembly (4) comprises a rotating seat (401) arranged on the top of the U-shaped seat (1) and located on the inner side of the arc-shaped top plate (3), the output end of the motor (2) penetrates through the top of the U-shaped seat (1) and is fixedly connected with the bottom end of the rotating seat (401), a first lifting seat (402) is sleeved on the inner side of the rotating seat (401), a fixing rod (403) is fixedly connected to the top end of the first lifting seat (402), a third lifting seat (405) is sleeved on the top end of the fixing rod (403) extending to the upper portion of the rotating seat (401), a second lifting seat (404) is fixedly connected with a second lifting seat (404), a transmission box (405) is connected with an annular lifting seat (405), and a third lifting seat (401) is connected with an annular lifting seat (406);

the inner parts of the rotating seat (401), the third lifting seat (405) and the annular transmission case (406) are distributed with adjusting components (5) for adjusting the heights of the second lifting seat (404) and the third lifting seat (405), the top of the rotating seat (401) is provided with a clamping component (6) for automatically clamping and releasing the crankshaft, and the adjusting components (5) comprise a worm unit (501), a lifting unit (502), a limiting unit (503) and a driving component (504);

the worm unit (501) comprises a first worm (5011), a second worm (5012), a third worm (5013) and a fixed shaft (5014) which are horizontally distributed in sequence, the first worm (5011) extends to penetrate one end of the outer portion of the rotating base (401), the first worm (5011), the second worm (5012) and the third worm (5013) are mounted at the top end of the first lifting base (402) through a base, a plug hole (50111), a first polygonal groove (5015) and a first circular groove (5016) are sequentially formed in the first worm (5011), a second circular groove (5017) and a second polygonal groove (5018) are sequentially formed in the second worm (5012), and a third circular groove (5019) and a third polygonal groove (50110) are sequentially formed in the third worm (5013);

the lifting unit (502) comprises a first worm wheel (5021) meshed above a first worm (5011), two sides of the first worm wheel (5021) are connected with linkage gears (5022) through connecting shafts, one end of each linkage gear (5022) is meshed with a linkage rack (5023), and the bottom end of each linkage rack (5023) penetrates through the lower portion of the first lifting seat (402) and is fixedly connected with the bottom end of the inner wall of the rotating seat (401);

the limiting unit (503) comprises a second worm wheel (5031) meshed with one side of a second worm (5012) and a second worm wheel (5032) meshed with one side of a third worm (5013), the inner wall of the second worm wheel (5031) is fixedly connected with a transmission screw rod (5033) penetrating through a second lifting seat (404) and extending to the upper part of a third lifting seat (405), the inner wall of the second worm wheel (5032) is fixedly connected with a rotating column (5034) penetrating to the upper part of the second lifting seat (404), the top end of the rotating column (5034) is fixedly connected with a connecting column (5035), the top end of the connecting column (5035) is sleeved with a lifting shaft (5036), the top end of the lifting shaft (5036) penetrates to the inner part of the third lifting seat (405) and is connected with a transmission gear (5037), the outer side of the transmission gear (5037) is meshed with a driven toothed ring (5038), the driven toothed ring (5038) is located inside an annular transmission box (406), and the inner part of the driven toothed ring (5038) is sleeved with a limiting clamping block (5039) extending to the lower part of the annular transmission box (5039);

the driving assembly (504) comprises a T-shaped handle (5047) and a driving shaft (5041), the driving shaft (5041) sequentially penetrates through a first worm (5011), a second worm (5012) and a third worm (5013) from the inside of a plugging hole (50111) and extends to the inside of a fixed shaft (5014), the outer wall of the driving shaft (5041) is located inside the first worm (5011), the second worm (5012) and the third worm (5013) and is sequentially and fixedly connected with a first polygonal block (5042), a second polygonal block (5043) and a third polygonal block (5044), the driving shaft (5041) is located inside the fixed shaft (5014) and is rotatably connected with a rotating block (5045), and one end, located inside the rotating block (5045), of the fixed shaft (5014) is provided with a return spring (5046);

the clamping assembly (6) comprises a fixed ring seat (601) fixed to the top of the second lifting seat (404), a fixed clamping block (602) is arranged at the top end of the fixed ring seat (601), the bottom end of the fixed clamping block (602) is fixedly connected with an extrusion block (603) penetrating into the fixed ring seat (601), a compression spring (606) is arranged on one side of the extrusion block (603), an extrusion ring (604) is arranged at the bottom end of the other side of the extrusion block (603), the bottom end of the extrusion ring (604) is fixedly connected with an extrusion column (605) penetrating into the lower portion of the fixed ring seat (601), and the extrusion column (605) is located on the outer side of the second lifting seat (404) and located right above the arc-shaped top plate (3).

2. The special-shaped crankshaft machining tool according to claim 1, wherein a connecting shaft connected with a first worm wheel (5021) is mounted at the top end of a first lifting seat (402) through a base, the bottom end of the inner wall of the rotating seat (401) is further fixedly connected with a limiting square column (5024), two linkage racks (5023) and two limiting square columns (5024) are arranged in parallel and symmetrically, and lifting grooves for the linkage racks (5023) and the limiting square columns (5024) to slide up and down are formed in the first lifting seat (402).

3. The special-shaped crankshaft machining tool as claimed in claim 1, wherein the transmission screw rod (5033) is rotatably connected with the rotating seat (401) and the second lifting seat (404) through a bearing, an external thread is formed on the outer wall of the transmission screw rod (5033) above the second lifting seat (404), an internal thread groove matched with the external thread of the transmission screw rod (5033) is formed on the inner wall of the third lifting seat (405), a limiting sliding groove matched with the outer wall of the fixing rod (403) is formed in the third lifting seat (405), the fixing rod (403) is provided with a plurality of fixing rods (403), and the plurality of fixing rods (403) and the transmission screw rod (5033) are annularly distributed with the center point of the rotating seat (401) as the center.

4. The special-shaped crankshaft machining tool according to claim 1, wherein a polygonal socket (5049) is formed in one end, located inside the first worm (5011), of the driving shaft (5041), the inserting hole (50111) is formed by three round holes with diameters decreasing in sequence, sleeves matched with the three round holes are fixed to three ends of the T-shaped handle (5047) respectively, and a polygonal wrench (5048) matched with the polygonal socket (5049) is fixedly connected to the inner portion of each sleeve.

5. The special-shaped crankshaft machining tool according to claim 1, wherein the rotating column (5034) is rotatably connected with the rotating base (401) and the second lifting base (404) through bearings, the top-view cross section of the connecting column (5035) is in a cross-shaped structure, a contraction groove for the connecting column (5035) to slide is formed in the lifting shaft (5036), a plurality of limiting clamping blocks (5039) are arranged, the limiting clamping blocks (5039) are annularly distributed with the center of a circle of a driven toothed ring (5038) as the center, an arc-shaped groove is formed in the position where the driven toothed ring (5038) contacts the limiting clamping blocks (5039), a square block is fixed at the position where the outer wall of the limiting clamping blocks (5039) contacts the bottom end of the inner wall of the annular transmission case (406), and a moving groove for the limiting clamping blocks (5039) and the square block to horizontally move is formed in the position where the annular transmission case (406) contacts the limiting clamping blocks (5039).

6. The special-shaped crankshaft machining tool according to claim 1, wherein the first polygonal block (5042) is matched with a first polygonal groove (5015), the second polygonal blocks (5043) and (508) and the third polygonal block (5044) is matched with a third polygonal groove (50110), the inner wall sizes of the first circular groove (5016), the second circular groove (5017) and the third circular groove (5019) are respectively larger than the inner wall sizes of the first polygonal groove (5015), the second polygonal groove (5018) and the third polygonal groove (50110), the first circular groove (5016) is located at one end, close to the second worm (5012), of the first polygonal groove (5015), the number of the second circular grooves (5017) is two, the second circular grooves (5017) are symmetrically distributed at two ends of the second polygonal groove (5018), and the third circular groove (5019) is located at one end, close to the second worm (5012), of the third polygonal groove (50110).

7. The special-shaped crankshaft machining tool according to claim 6, characterized in that horn contraction grooves are formed between the first polygonal groove (5015) and the first circular groove (5016), between the second polygonal groove (5018) and the second circular groove (5017), and between the third polygonal groove (50110) and the third circular groove (5019), the overall length of the first polygonal groove (5015) and the horn contraction grooves is matched with the length of one second circular groove (5017), and the overall length of one second circular groove (5017), two horn contraction grooves and the second polygonal groove (5018) is matched with the length of the third circular groove (5019).

8. The special-shaped crankshaft machining tool according to claim 6, wherein a movable groove for the rotating block (5045) and the return spring (5046) to move in a telescopic mode is formed in the fixed shaft (5014), and the fixed shaft (5014) is fixedly connected with the top end of the first lifting seat (402) through a fixed seat.

9. The special-shaped crankshaft machining tool according to claim 1, wherein one surfaces of the extrusion blocks (603) and the extrusion rings (604) which are in contact with each other are of an inclined structure, the bottom ends of the extrusion columns (605) are of a spherical structure, a plurality of fixed clamping blocks (602), the extrusion blocks (603) and compression springs (606) are arranged and distributed in an annular shape with the center of the fixed ring seat (601) as the center, a horizontal moving groove for the extrusion blocks (603) to move horizontally is formed in the position where the fixed ring seat (601) is in contact with the extrusion blocks (603), and the top end of the notch of the arc-shaped top plate (3) is of an arc-shaped surface.

Images