CN121004287A - A cutting device for machining ball valves - Google Patents
A cutting device for machining ball valvesInfo
- Publication number
- CN121004287A CN121004287A CN202511535533.4A CN202511535533A CN121004287A CN 121004287 A CN121004287 A CN 121004287A CN 202511535533 A CN202511535533 A CN 202511535533A CN 121004287 A CN121004287 A CN 121004287A
- Authority
- CN
- China
- Prior art keywords
- tool
- clamping
- jaw chuck
- arm
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/06—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning valves or valve bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
- B23B13/12—Accessories, e.g. stops, grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0046—Devices for removing chips by sucking
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
- Turning (AREA)
Abstract
The invention relates to the technical field of ball valve production and machining, in particular to a cutting device for ball valve machining, which comprises a machine tool main body, wherein a three-jaw chuck and a tool rest are arranged on the machine tool main body, a cutting tool is arranged on the tool rest, a chip removal and tool stabilizing mechanism is arranged on the tool rest, a direction-adjusting clamping part is arranged on the machine tool main body and the three-jaw chuck, the direction-adjusting clamping part is suitable for taking a workpiece off the three-jaw chuck and reversing the workpiece and fixing the workpiece with the same axis again, so that the workpiece is accurately turned, the fixation of a blank is always kept in the same axis in the process of turning direction, even if the re-clamping is carried out, the axis of the blank is always on the same straight line, the coaxial repeated clamping is ensured, the repeated positioning error is effectively avoided, and the subsequent cutting machining precision is ensured.
Description
Technical Field
The invention relates to the technical field of ball valve production and processing, in particular to a cutting device for ball valve processing.
Background
The ball valve is a key fluid control element, and is widely applied to various industrial pipeline systems such as petroleum, chemical industry, natural gas, electric power and the like because of the advantages of small flow resistance, good sealing performance, rapid opening and closing and the like. The core component of the valve is a valve core (ball) which is an absolute core for the whole valve to perform the function and ensure the performance of the valve, the valve core directly determines the sealing performance, which is the most fundamental and important function of the valve core, besides, the valve core also bears the main load of a medium and the like, so the processing quality of the valve core, particularly the roundness and the surface roughness of the ball, directly determines the sealing performance and the service life of the ball valve.
In the process of cutting a blank to form a ball valve core, as the valve core is a spherical part, the spherical surface of the valve core needs to be completely machined, but in actual machining, only a half spherical surface can be machined at one time, but a part clamped by a clamp cannot be machined. Therefore, the direction must be turned and clamped again to process the rest part, and finally a complete and continuous spherical surface is formed, but repeated positioning errors are difficult to avoid by repeated manual clamping, so that accumulated errors are caused, coaxiality between the center of the valve core and a runner hole is reduced, or the part which is processed for multiple times cannot be perfectly connected and smooth, knife connecting traces or profile deviations exist, and further the valve is not tightly closed or the operation moment is overlarge.
Disclosure of Invention
The invention aims to provide a cutting device for ball valve processing, which aims to solve the problems.
In order to achieve the above object, the present invention provides a cutting device for ball valve processing, comprising:
the machine tool comprises a machine tool body, wherein the machine tool body is provided with a three-jaw chuck and a tool rest, and a cutting tool is arranged on the tool rest;
The chip removal stable cutter mechanism is arranged on the cutter rest, can be protruded forwards relative to the cutter rest and is propped against the overhanging part of the cutting tool, and the chip removal stable cutter mechanism is suitable for continuously sucking chips during cutting;
The direction-adjusting clamping part is arranged on the machine tool main body and the three-jaw chuck, and is suitable for taking down a workpiece from the three-jaw chuck and reversing the workpiece and then fixing the workpiece with the same axis again so as to accurately adjust the workpiece.
Further, the direction-adjusting clamping part includes:
the linear module and the three-jaw chuck are arranged on the machine tool main body in the same direction;
the end arm is hinged to the rotor of the linear module;
a main arm slidably inserted into the end arm and extending to one side of the three-jaw chuck;
The swinging cylinder is arranged on the rotor of the linear module, the output end of the swinging cylinder is connected with the end arm, and the swinging cylinder can drive the end arm to swing back and forth on the radial plane of the three-jaw chuck;
the electric push rod is arranged on the end arm, and the output end of the electric push rod is upwards connected with the main arm;
the motor is arranged at the tail end of the main arm;
the suspension rod piece is connected with the output end of the motor, and the tail end of the suspension rod piece is at a right angle;
the back of the bowl-shaped piece is fit and sleeved on the tail end of the suspension rod piece;
The suction-fixing component is used for sucking the liquid, the suction assembly is arranged on the bowl-shaped piece;
Three guide combined columns, wherein the circumferences of the three guide combined columns are connected to the back of the bowl-shaped piece;
The three holes are respectively formed in three claws of the three-claw chuck along the circumferential direction;
And the clamping assembly is arranged on the three-jaw chuck.
Further, the suction attachment assembly includes:
A vacuum chuck mounted to the inner bottom of the bowl, the vacuum chuck being centrally located within the bowl;
A main pipe inserted from the back of the bowl and connected with the vacuum chuck;
The hard pipe is inserted into the main pipeline in a fitting way at one end, and the other end of the hard pipe is connected with first negative pressure equipment through a hose;
the hard tube is fixed on the suspension rod piece.
Further, the suction attachment assembly further comprises:
the iron ring is arranged at the pipe orifice of the main pipeline;
The first annular electromagnet is arranged on the hard pipe and is connected with an external power supply;
The first annular electromagnet is attached to the iron ring.
Further, the chip removal steady knife mechanism includes:
the hand-twisting rotating shaft is rotatably arranged on the tool rest;
The second annular electromagnet is embedded in the tool rest, and the hand-twisting rotating shaft passes through the second annular electromagnet in a fitting way;
One end of the swing arm is fixedly sleeved on the hand-twisting rotating shaft, and the other end of the swing arm extends to the front of the tool rest;
The contact piece is connected with the other end of the swing arm, rotates the screwing rotating shaft, swings the swing arm towards the cutting tool, and can be abutted against two mutually perpendicular surfaces of the cutting tool.
Further, the chip removal steady knife mechanism further comprises:
The exposed groove is formed in the contact piece, and the opening of the exposed groove is on the same side as the tool tip of the cutting tool;
And one end of the suction pipe fitting is inserted into the contact piece to be communicated with the exposed groove, and the other end of the suction pipe fitting is connected with peripheral second negative pressure equipment.
Further, the clamping assembly includes:
the groove-shaped pieces are circumferentially arranged on the three-jaw chuck, and the groove-shaped pieces and the three jaws of the three-jaw chuck are sequentially arranged at intervals;
The clamping pieces are respectively and slidably arranged in the groove-shaped pieces;
The first bolts are respectively and spirally arranged on the groove-shaped pieces and are respectively and rotatably connected with the clamping pieces, and the first bolts are screwed forwards to push the clamping pieces forwards so as to gradually fold the clamping pieces centripetally;
the upper parts of the clamping pieces are arc-shaped;
the bowl-shaped piece is made of rubber.
Further, a plurality of lifting pieces are respectively connected to the clamping pieces, movable ends are respectively hinged to the tail ends of the clamping pieces, and second bolts are respectively and spirally arranged on the lifting pieces.
Further, the chip removal steady knife mechanism further comprises:
the support arm is connected with the swing arm;
The hand-screwed bolt is spirally arranged on the support arm;
And a through hole for the hand-screwed bolt to pass through is formed in one surface of the contact piece parallel to the top surface of the cutting tool.
Further, an interference fit is provided between the bowl and the suspension bar.
The cutting device for ball valve machining can turn the blank in the direction and finish clamping again after turning the blank in the process of cutting the blank to form the ball valve core, always keeps fixing the blank in the same axial direction in the process of turning the direction, even if the blank is clamped again, the axis of the blank can be ensured to be always on the same straight line, coaxial repeated clamping is ensured, repeated positioning errors are further effectively avoided, the subsequent cutting machining precision is ensured, in addition, the turning clamping part can be better matched with the spherical valve core in a targeted manner, the clamping part is more fully attached to the spherical surface of the clamping part, clamping force is applied, accordingly, the clamping effect is improved, the clamping force is ensured to be stable, meanwhile, damage such as scratches and the like caused by the spherical surface of the valve core is prevented from being excessively concentrated, and the sealing performance of the ball valve is influenced.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 shows a perspective view of the present invention;
fig. 2 shows a second perspective view of the present invention;
fig. 3 shows a third perspective view of the present invention;
Fig. 4 shows a fourth perspective view of the present invention;
fig. 5 shows a fifth perspective view of the present invention;
Fig. 6 shows a sixth perspective view of the present invention;
fig. 7 shows a seventh perspective view of the present invention;
fig. 8 shows an eighth perspective view of the present invention;
Fig. 9 shows a ninth perspective view of the present invention;
FIG. 10 shows an enlarged view of the invention at A of FIG. 2;
FIG. 11 shows an enlarged view of the invention at B of FIG. 3;
FIG. 12 shows an enlarged view of FIG. 4 at C in accordance with the present invention;
FIG. 13 shows an enlarged view of the invention at D of FIG. 5;
FIG. 14 shows an enlarged view of FIG. 6 at E in accordance with the present invention;
fig. 15 shows an enlarged view of fig. 6 at F in accordance with the present invention.
In the drawings, like reference numerals designate like structural elements, wherein:
1. the machine tool comprises a machine tool body, a 2-jaw chuck, a 3-jaw chuck, a tool rest, a 4-cutting tool, a 5-chip removal tool stabilizing mechanism, a 51-hand-screwing rotating shaft, a 52-second annular electromagnet, a 53-swing arm, a 54-contact piece, a 55-exposure groove, a 56-suction pipe piece, a 57-support arm, a 58-hand-screwing bolt, a 6-direction adjusting clamping part, a 61-linear module, a 62-end arm, a 63-main arm, a 64-swing cylinder, a 65-electric push rod, a 66-motor, a 67-suspension rod piece, a 68-bowl-shaped piece, a 69-suction fixing component, a 691-guiding body column, 692-holes, 693-clamping components, 6931-groove pieces, 6932-clamping pieces, 6933-first bolts, 6934-lifting pieces, 6935-movable ends, 6936-second bolts, 694-vacuum sucking discs, 695-main pipes, 696-hard pipes, 697-iron rings, 698-first annular electromagnets.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1 to 15, a cutting device for ball valve processing includes:
The three-jaw chuck 2 is an existing machine tool accessory for clamping and positioning a workpiece, the three-jaw chuck 2 is usually arranged at the front end of a main shaft of the machine tool body 1, the knife rest 3 is also an existing machine tool accessory for clamping and fixing the cutting tool 4 so as to ensure smooth cutting processing, and redundant description is omitted herein;
The chip removal stable cutter mechanism 5 is arranged on the cutter rest 3, the chip removal stable cutter mechanism 5 can be protruded forwards relative to the cutter rest 3 to press the overhanging part of the cutting cutter 4, and the chip removal stable cutter mechanism 5 is suitable for continuously sucking chips during cutting;
the turning clamping part 6 is arranged on the machine tool main body 1 and the three-jaw chuck 2, the turning clamping part 6 is suitable for taking a workpiece off from the three-jaw chuck 2 and reversing the workpiece and fixing the workpiece with the same axis again so as to accurately turn the workpiece, the cutting device for ball valve processing can turn the blank in the direction and finish clamping after turning the blank in the process of cutting the blank to form the ball valve core through the turning clamping part 6, the blank is always fixed in the same axial direction in the process of turning the direction, even if the clamping is performed again, the axes of the blank are always on the same straight line, coaxial repeated clamping is ensured, repeated positioning errors are further effectively avoided, the subsequent cutting processing precision is ensured, in addition, the turning clamping part 6 can be better matched with the spherical valve core in a targeted manner, the ball valve core is more fully attached to the spherical valve core and clamping force is applied, and the sealing performance of the ball valve core can be improved, the sealing performance of the ball valve core can be prevented from being influenced by scratches caused by the centralized clamping force; the chip-removing and tool-stabilizing mechanism 5 can continuously suck the chips generated by cutting at the position close to the cutting position by utilizing strong suction force in the cutting process, thereby indirectly forming a discharge channel, leading the chips to be thrown out to one side passively, effectively preventing the thin, long and soft chips from being wound on a workpiece or a cutting tool 4 to scratch the processed surface, and the chip-removing and tool-stabilizing mechanism 5 can pertinently limit the longer overhanging part of the cutting tool 4 on the basis of clamping and fixing the cutting tool holder 3 so as to strengthen the overhanging part, the overhanging part of the cutting tool 4 is prevented from vibrating due to the cutting force during cutting, so that the surface accuracy of the valve core is prevented from being influenced by the flutter lines on the machining surface, and the quality of the machined valve core is ensured.
Optionally, the direction-adjusting clamping part 6 includes:
The linear module 61 is disposed on the machine tool body 1 in the same direction as the three-jaw chuck 2, the linear module 61 is specifically configured by a linear motor, a ball screw module, or other mechanism, and can perform linear reciprocating motion, and the mover is a component that performs reciprocating motion on the linear module 61;
an end arm 62, wherein the end arm 62 is hinged on the mover of the linear module 61;
a main arm 63 slidably inserted into the end arm 62 and extending toward the three-jaw chuck 2 side;
The swinging air cylinder 64 is arranged on the rotor of the linear module 61, the output end of the swinging air cylinder 64 is connected with the end arm 62, and the swinging air cylinder 64 can drive the end arm 62 to swing back and forth on the radial plane of the three-jaw chuck 2;
The electric push rod 65, the electric push rod 65 is arranged on the end arm 62, and the output end of the electric push rod 65 is upwards connected with the main arm 63;
a motor 66, the motor 66 being disposed at the end of the main arm 63;
A suspension bar 67, wherein the suspension bar 67 is connected with the output end of the motor 66, and the tail end of the suspension bar 67 is a right angle;
the back of the bowl 68 is fit and sleeved on the tail end of the suspension rod 67, the axis of the bowl 68 and the center point of the suspension rod 67 are both located on the plane where the axis of the three-jaw chuck 2 is located, so that the bowl 68 and the three-jaw chuck 2 are coaxial after the bowl 68 is aligned with the three-jaw chuck 2, and the bowl 68 can be kept coaxial with the three-jaw chuck 2 after one hundred eighty degrees of rotation, so that workpieces clamped on the three-jaw chuck 2 are coaxial with the bowl 68;
a suction assembly 69, the suction assembly 69 being disposed on the bowl 68;
Three guide commissure posts 691, the three guide commissure posts 691 being circumferentially connected to the back of the bowl 68;
Three holes 692, the three holes 692 are respectively arranged on the three jaws of the three-jaw chuck 2 along the circumferential direction;
the clamping assembly 693, the clamping assembly 693 is arranged on the three-jaw chuck 2, when the rough machining of the blank for preliminary molding of the ball valve core is started, the blank is clamped by the three-jaw chuck 2 to cut, the swinging cylinder 64 swings the end arm 62 and the main arm 63 backwards, the end arm 62 and the main arm 63 are in the up state, the bowl 68, the suction assembly 69 and the like are far away from the three-jaw chuck 2 to prevent the cutting process, after one end of the blank is machined and the ball is preliminarily molded, the cutting tool 4 is reset and the clamping of the three-jaw chuck 2 to the blank is kept, then the swinging cylinder 64 is driven to swing the end arm 62 and the main arm 63 forwards until the end arm 62 is swung to the vertical state, and the bowl 68, The three-jaw chuck 2 and the blank on the three-jaw chuck 2 are coaxial, then the linear module 61 is driven to drive the bowl 68 to move towards the blank on the three-jaw chuck 2, the bowl 68 gradually covers the machined sphere on one side inside, after the suction and fixing assembly 69 is fully contacted with the blank, the blank is firmly sucked and fixed by the suction and fixing assembly 69, then the three-jaw chuck 2 is released, clamping of the blank is canceled, in the process, the three jaws of the three-jaw chuck 2 are released to a given position, the three holes 692 are aligned with the three guide combined columns 691, then the bowl 68 and the blank are driven to retreat by the linear module 61, after enough space is reserved, the motor 66 is driven, the bowl 68 is swung by the suspension rod 67 until the bowl 68 is accurately swung for one hundred eighty degrees, the blank is adjusted, then the bowl 68 and the blank are driven by the linear module 61 to move towards the three-jaw chuck 2 again, three guide combined columns 691 are gradually inserted into the three holes 692, after the three guide combined columns 691 are completely tightly inserted into the three holes 692, the clamping assembly 693 is used for clamping the blank, the blank is fixed, the three-jaw chuck 2 is not used for clamping, the fixing of the suction assembly 69 to the blank is canceled after the clamping is finished, then the suspension rod 67 is continuously driven to move backwards through the linear module 61, at this time, the bowl 68 is fixed, the three-jaw chuck 2 is blocked, the suspension rod 67 can be pulled out from the back of the bowl 68 and the suction assembly 69 is separated, then the electric push rod 65 is driven to lift the main arm 63, the suspension rod 67 is completely separated from the back of the bowl 68, then the end arm 62 and the main arm 63 are swung backwards again through the swinging cylinder 64, the end arm 62 and the main arm 63 are restored to the high state, and then, starting cutting processing of the other end of the blank, ensuring complete processing of the spherical valve core, realizing turning and re-targeted clamping of the direction of the blank, ensuring accurate turning of the direction of the blank on the axis line of the position when the blank is clamped for the first time, always ensuring fixing of the blank in the process, ensuring that the height of the axis position of the blank is kept consistent before and after clamping even if re-clamping is carried out, namely, in the cutting processing process, the axis of the blank is always positioned on the same straight line, realizing coaxial clamping, further effectively avoiding repeated positioning errors, ensuring follow-up cutting processing precision, ensuring coaxiality of the center of the valve core and a runner hole, and perfect splicing of the front and back cutting processing, avoiding occurrence of tool mark or contour deviation, further preventing a ball valve finally produced from being closed seriously or operating moment from being too large, and keeping the fixation of the suction assembly 69 on the blank when the blank is clamped again in the clamping assembly 693, and after the blank is clamped firmly, ensuring that the coaxial clamping assembly 69 is removed again, so that the coaxial clamping position of the blank is stable in the clamping process or the blank is prevented from being clamped firmly due to the fact that the clamping assembly is pressed to the coaxial clamping position of the blank is ensured to be stable in the clamping process.
Optionally, the suction attachment assembly 69 includes:
A vacuum chuck 694, wherein the vacuum chuck 694 is mounted at the inner bottom of the bowl 68, and the vacuum chuck 694 is positioned at the center in the bowl 68, so that the vacuum chuck 694 can be attached to the center of the blank after the suction fixing assembly 69 is fully contacted with the blank;
a main pipe 695, the main pipe 695 being inserted from the back of the bowl 68 and connected to the vacuum chuck 694;
The hard tube 696, one end of the hard tube 696 is inserted into the main tube 695 in a fitting way, the other end of the hard tube 696 is connected with a peripheral first negative pressure device through a hose, along with the movement of the bowl 68 towards the blank on the three-jaw chuck 2, the bowl 68 gradually covers the processed one side sphere inside, the vacuum chuck 694 is contacted with the blank, after the vacuum chuck 694 fully contacts the blank, the peripheral first negative pressure device is started to start sucking, the vacuum chuck 694 is in a negative pressure state through the hard tube 696 and the main tube 695, so that strong suction force is generated, the blank is firmly sucked, the fixing of the blank is realized, the axial position of the blank is ensured to be stable in the subsequent turning direction, the fixing of the blank is ensured by virtue of strong suction force, the vacuum chuck 694 is applicable to the blank with different sizes, the practicability in actual use is ensured, the peripheral first negative pressure device is a strong vacuum pump and the like, and the strong negative pressure can be generated, so that the vacuum chuck 694 can firmly suck the blank;
The rigid tube 696 is secured to the suspension bar 67 such that the rigid tube 696 can be withdrawn from the main tube 695 as the suspension bar 67 moves rearward, thereby ensuring that the suction attachment assembly 69 can be separated.
Optionally, the suction attachment assembly 69 further includes:
An iron ring 697, said iron ring 697 being mounted at the orifice of said main pipe 695;
The first annular electromagnet 698 is arranged on the hard tube 696, and the first annular electromagnet 698 is connected with a peripheral power supply;
The first annular electromagnet 698 is attached to the iron ring 697, in a normal state, after the hard pipe 696 is inserted into the main pipe 695, an external power supply is connected to energize the first annular electromagnet 698, so that suction force is generated to firmly suck the iron ring 697, the matching tightness of the joint of the hard pipe 696 and the main pipe 695 is enhanced, negative pressure intensity of the vacuum chuck 694 is prevented from being influenced by external escape of suction air flow from the joint of the hard pipe 696 and the main pipe 695, the blank is ensured to be firmly sucked by enough suction force, and when the hard pipe 696 is ready to be pulled out from the main pipe 695, the power is cut off, so that smooth and unimpeded pulling of the hard pipe 696 is ensured.
Optionally, the chip removal stable cutter mechanism 5 includes:
A hand-twisting shaft 51 rotatably mounted on the tool holder 3, wherein when a ball is cut, the cutting tool 4 needs to have enough overhanging length to avoid the machined spherical surface part in order to allow the cutting tool 4 to approach the workpiece and complete the cutting of the whole spherical surface, so that the cutting tool 4 has more overhanging, and the longer the tool overhangs, the worse the rigidity, the more easily vibration occurs under the action of cutting force, and the vibration not only causes poor surface quality of the workpiece, but also affects the service life of the tool;
The second annular electromagnet 52 is embedded in the tool rest 3, the hand-twisting rotating shaft 51 passes through the second annular electromagnet 52 in a fitting way, and the second annular electromagnet 52 is connected with an external power supply;
a swing arm 53, wherein one end of the swing arm 53 is fixedly sleeved on the hand-twisting rotating shaft 51, and the other end extends to the front of the tool rest 3;
The abutting piece 54 is connected with the other end of the swinging arm 53, the swinging arm 53 swings towards the cutting tool 4 by rotating the screwing rotating shaft 51, the abutting piece 54 can lean against two mutually perpendicular surfaces of the cutting tool 4, before the cutting tool 4 is installed for cutting, the screwing rotating shaft 51 is rotated, the swinging arm 53 swings towards one side of the cutting tool 4 until the abutting piece 54 tightly abuts against two mutually perpendicular surfaces of the cutting tool 4, then the second annular electromagnet 52 is electrified, so that suction force is generated to firmly suck the screwing rotating shaft 51, the abutting piece 54 is fixed at the current position, the overhanging part of the cutting tool 4 is indirectly reinforced on the basis of clamping of the tool rest 3, the limitation of the overhanging part of the cutting tool is formed, the possible action of the overhanging part is restrained, the stability of the cutting tool 4 is ensured, further, the surface quality of a blank, which is affected by vibration lines due to the vibration of the cutting force during cutting machining, is effectively prevented, the surface quality of a blank is ensured, and even the valve core is prevented from being broken due to the impact load of the cutting tool 4.
Optionally, the chip removal and tool stabilization mechanism 5 further includes:
An exposed groove 55, wherein the exposed groove 55 is formed on the contact piece 54, and the opening of the exposed groove 55 is on the same side as the tool tip of the cutting tool 4;
The suction pipe fitting 56, one end of the suction pipe fitting 56 is inserted into the contact piece 54 to be communicated with the exposed groove 55, the other end is connected with an external second negative pressure device, the external second negative pressure device is started to start suction when cutting, so that the exposed groove 55 is made to be a strong suction inlet through the suction pipe fitting 56, thin and long soft chips formed by cutting are continuously sucked away at a position close to a cutting point, a discharge channel is indirectly formed, the chips are passively thrown out to one side, the chips are effectively prevented from being wound on a workpiece or a cutting tool 4 to scratch the machined surface, the quality of a machined valve core is further ensured, and the second negative pressure device adopts equipment such as an industrial dust collector, so that the work suitable for sucking metal chips is ensured.
Optionally, the clamping assembly 693 includes:
A plurality of groove-shaped pieces 6931, wherein the circumference of the groove-shaped pieces 6931 is arranged on the three-jaw chuck 2, and the groove-shaped pieces 6931 and the three jaws of the three-jaw chuck 2 are sequentially arranged at intervals;
a plurality of clamping members 6932, wherein a plurality of the clamping members 6932 are slidably mounted within a plurality of the channel members 6931, respectively;
The first bolts 6933 are respectively and spirally arranged on the groove-shaped pieces 6931, the first bolts 6933 are respectively and rotatably connected with the clamping pieces 6932, the first bolts 6933 are screwed forwards, the clamping pieces 6932 can be pushed forwards to gradually and centripetally fold the clamping pieces 6932, after the bowl-shaped pieces 68 and the blanks are in place, the first bolts 6933 are rotated forwards by using a socket wrench, the clamping pieces 6932 are pushed forwards along the groove-shaped pieces 6931 to centripetally and gradually gather together until the middle blanks are clamped, firm clamping of the blanks is ensured to be smoothly cut, and the clamping pieces 6932 can be driven to gather together by using electric power or hydraulic pressure instead of the first bolts 6933 to be clamped, so that the clamping pieces 6932 are simultaneously close to the center, and deviation of clamping positions of the blanks is further prevented;
When the upper parts of the clamping pieces 6932 are arc-shaped and the common three-jaw chuck 2 clamps a ball body, pressure can be applied only by means of limited points or short line contact, so that not only are blank stress points fewer, clamping is unstable, but also the blank can be damaged due to uneven stress, and the arc-shaped clamping surfaces of the clamping pieces 6932 can be better matched with the ball body in a larger area and apply clamping force, so that the clamping effect is improved, the clamping stability is ensured, the cutting quality is prevented from being influenced by shaking of the blank, and meanwhile, the sealing performance of a finally manufactured ball valve is prevented from being influenced by damage such as scratches on the ball surface caused by too concentrated clamping force;
The bowl-shaped piece 68 is made of rubber, when the blank is clamped, the bowl-shaped piece 68 is pressed and deformed by the clamping pieces 6932, clamping is implemented, the bowl-shaped piece 68 made of rubber is used as a protection cushion layer between the clamping pieces 6932 and the blank, strong clamping force is prevented from pressing out marks on the surface of the processed ball, the surface accuracy of the ball is affected, friction force is improved, and firm clamping of the blank is further ensured.
Optionally, the lifting pieces 6934 are respectively connected to the clamping pieces 6932, the movable ends 6935 are respectively hinged to the tail ends of the clamping pieces 6932, the second bolts 6936 are respectively and spirally installed on the lifting pieces 6934, the sphere is characterized in that the diameters of the parts are inconsistent, after the blanks are clamped by the clamping pieces 6932, the second bolts 6936 are screwed downwards to push the hinged movable ends 6935 towards the middle blanks until the hinged movable ends 6935 are tightly pressed on the blanks through the bowl-shaped pieces 68, a group of circumferential clamping forces different from the clamping pieces 6932 are formed by the movable ends 6935, the movable ends 6935 clamp the blanks again by using the clamping force towards one side of the clamping pieces 6932, so that the spheres are further adapted and clamped by relatively buckling inwards, and the unstable clamping of the blanks is effectively prevented.
Optionally, the chip removal and tool stabilization mechanism 5 further includes:
A support arm 57, the support arm 57 being connected to the swing arm 53;
A hand-screwed bolt 58, the hand-screwed bolt 58 being screw-mounted on the arm 57;
The contact piece 54 is provided with a through hole for the hand-screwed bolt 58 to pass through on one surface parallel to the top surface of the cutting tool 4, the contact piece 54 is used for propping against the cutting tool 4, after the limitation of the cutting tool 4 is formed, the hand-screwed bolt 58 is screwed downwards, the hand-screwed bolt 58 passes through the contact piece 54 and is propped against the cutting tool 4 from above by the hand-screwed bolt 58, so that the cutting tool 4 is reinforced again on the basis of the contact piece 54, the cutter stabilizing effect is further consolidated, the cutting tool 4 is ensured to cut stably, and meanwhile, the influence on the cutter stabilizing effect caused by the fact that the contact piece 54 cannot contact and prop against the upper side of the cutting tool 4 due to the size difference of the cutting tool 4 is prevented.
Optionally, the bowl 68 and the suspension rod 67 are in interference fit, that is, the bowl 68 and the suspension rod 67 have a certain friction force and can relatively move under a certain external force, so that the bowl 68 is prevented from falling off when the direction of the bowl 68 and the blank is turned while ensuring that the suspension rod 67 can be smoothly pulled out under the driving of the linear module 61, and smooth turning of the direction is ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202511535533.4A CN121004287B (en) | 2025-10-27 | 2025-10-27 | Cutting device for ball valve machining |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202511535533.4A CN121004287B (en) | 2025-10-27 | 2025-10-27 | Cutting device for ball valve machining |
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| CN121004287B CN121004287B (en) | 2026-01-30 |
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| CN115401224A (en) * | 2022-06-01 | 2022-11-29 | 深圳市富士杰智能技术有限公司 | Automatic upender numerical control lathe goes up blanking machine |
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| US5514061A (en) * | 1993-07-26 | 1996-05-07 | Okuma Corporation | Machine tool for working rear surface of workpiece |
| JP2000280101A (en) * | 1999-03-29 | 2000-10-10 | Okuma Corp | Curved surface processing method |
| KR200352273Y1 (en) * | 2004-02-24 | 2004-06-04 | 박희락 | the spherical surface processing machine of a ball valve |
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| CN121004287B (en) | 2026-01-30 |
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