CN108296812A - A kind of multi-angle clamp for machining of bone plate - Google Patents

Abstract

The invention discloses a multi-angle processing jig for a bone plate, which comprises a base, a chute is provided in the middle of the base, T-shaped grooves are provided on both sides of the chute, a screw seat is provided at both ends of the base, and a screw seat is provided in the screw seat. Screw rod, one end of the base is provided with a T-shaped seat, the other end of the base is provided with a sliding seat, the two ends of the sliding seat are provided with locking bolts, the locking bolt is provided with a nut 1, and the upper ends of the sliding seat and the T-shaped seat are both sleeved. There is a fixed rod 1, and four positioning holes are evenly distributed along the circumference of the fixed rod 1. The sliding seat and the T-shaped seat are provided with fixed pins. The other end of the rod one is provided with a column, the upper end of the column is provided with a rectangular hole, the upper end of the rectangular hole is provided with a rotating rod, the bottom of the rotating rod is provided with a pressing block, the lower end of the column is provided with a fixed rod two, and the front end of the fixed rod two is provided with a screw rod two to fix The rod two is sleeved with a limit block, and the screw rod two is provided with a nut three. The manufacturing cost of this fixture is relatively low, and it has the advantages of high positioning accuracy, wear resistance, and convenient use.

Description

A multi-angle processing jig for bone plate

technical field

The invention relates to the field of medical device processing, in particular to a multi-angle processing jig for bone plates.

Background technique

The processing device of the previous three-axis machining center can only process workpieces with a single angle. When using machining, it cannot process workpieces with large-angle curved surfaces. The limitations are large. For example, the main processes of straight bone plate processing include hole processing and end surface processing. , In actual processing, multiple fixtures are usually required to complete the processing of the bone plate, and the manufacturing cost of the fixture is high, and the processing efficiency is low. Now there is a need for a fixture that is easy to operate and convenient to process all angles of the bone plate.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-angle processing jig for bone plates, so as to solve the above-mentioned multiple defects caused by the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a multi-angle processing jig for bone plates, including a base, a chute is provided in the middle of the base, T-shaped grooves are provided on both sides of the chute, and the Both ends of the base are provided with a screw seat, the screw seat is provided with a screw rod, one end of the base is provided with a T-shaped seat, and the two ends of the T-shaped seat are respectively fixed on the base with fixing bolts, and the base The other end is provided with a cross-shaped sliding seat and the lower end is located in the chute, and the sliding seat is threadedly connected with the screw mandrel. The two ends of the sliding seat are provided with locking bolts, and the head of the locking bolt is located in the In the T-shaped groove, the locking bolt is provided with a nut 1, and the upper ends of the sliding seat and the T-shaped seat are both sleeved with a fixed rod 1, and the middle part of the fixed rod 1 is evenly distributed with four positioning holes along the circumference. Both the sliding seat and the T-shaped seat are provided with fixed pins and are vertically inserted in the positioning holes. One end of the fixed rod one is provided with a screw rod one, the screw rod one is provided with a nut two, and the other end of the fixed rod one is A column is provided, and the column is parallel to the line connecting the two relative positioning holes. The upper end of the column is provided with a rectangular hole, and the upper end of the rectangular hole is provided with a rotating rod. The rotating rod extends into the rectangular hole and the bottom A pressing block is provided, the lower end of the column is provided with a fixed rod two, the front end of the fixed rod two is provided with a screw rod two, the fixed rod two is sleeved with a limit block, and the screw rod two is provided with a nut three.

Preferably, the lower end of the pressing block, the bottom of the rectangular hole, the top of the fixing rod 2 and the top of the limiting block are all provided with rubber pads.

Preferably, an interference fit is provided between the fixed rod one and the round hole of the slide seat, and an interference fit is provided between the fixed pin and the positioning hole.

Preferably, a rotating nut is welded to the front end of the screw rod.

Preferably, ear plates are provided at both ends of the base.

The beneficial effects of adopting the above technical solutions are: in the multi-angle processing of a bone plate of the present invention, before processing the hole position of the bone plate, first pull out two fixing pins and loosen two nuts, and four positioning holes form a Cross connection, the column is parallel to one of the lines, turn the column so that one end of the rectangular hole is at the upper end and the column is perpendicular to the horizontal line, insert the fixing pin into the positioning hole, turn the nut 2 to lock the fixing rod 1, the fixing pin reduces the column during processing Rotation error, nut two reduces the front and rear movement error of the column during processing, put one end of the bone plate into the rectangular hole of the column on the T-shaped seat, turn the rotating rod so that the pressing block presses down on one end of the bone plate, loosen nut one, and turn The screw rod drives the sliding seat to move, so that the other end of the bone plate enters the rectangular hole of the upright column on the sliding seat, turn the nut 1 to fix the locking bolt to fix the sliding seat, and then turn the rotating rod to make the pressure block press down on the bone plate. At the other end, the clamping of the bone plate is completed above, and the bone plate is drilled by the drilling equipment. After the drilling operation is completed, pull out the fixing pin, loosen the nut 2, turn the rotating rod to make the pressing block upward, and take out the bone plate , and then turn the two columns 180 degrees, so that one end of the fixing rod 2 faces upward, take out the limit block and nut 3, loosen the nut 1, turn the screw to move the sliding seat, so that the two holes at both ends of the bone plate can be Insert the two fixed two, turn the nut first to fix the sliding seat after inserting, then insert the fixed pin into the positioning hole, and turn the nut two to lock the column, then put the limit block on the fixed rod two, put the nut 3. Screw in screw 2 to make the limit block compress the bone plate, and fix the bone plate through the holes of the bone plate. Then, the machining center will mill one side of the bone plate. When the other side needs to be processed, the Unscrew the nut 3 and take out the limit block, take the bone plate out from the fixing rod 2 and turn it over and put it back on the fix rod 2, put the limit block into it and lock it with nut 3, and the machining center will fix it on the other side. Milling is performed on one side, and the curved surface with a certain angle on the side of the bone plate is not easy to process. Before milling on the side, first loosen the nut 2 and take out the fixing pin, so that the two columns and the bone plate rotate 90 degrees in one direction, and then Insert the fixing pin into the positioning hole, and lock it with the second nut at the same time. At this time, one side end of the bone plate is facing upwards. The machining center will mill the side end, take out the fixing pin and loosen the second nut, and put the column together with the Rotate the bone plate 180 degrees so that the other side of the bone plate is facing upwards, insert the fixing pin and lock it with the nut 2, and the machining center will mill the other side of the end face. The manufacturing cost of this fixture is relatively low, and it has positioning With the advantages of high precision, wear resistance, and convenient use, it can simultaneously clamp the drilling and surface milling of the bone plate, integrate multiple fixtures in the traditional process, and change the clamping of the bone plate by rotating the column Angle so that the side end of the plate faces up for tool milling.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is a side view of the present invention;

Fig. 3 is a top view of the present invention;

Fig. 4 is a partial front view of the column of the present invention;

Fig. 5 is a partial side view of the column of the present invention.

Among them, 1-base, 101-T-shaped slot, 102-ear plate, 103-chute, 2-screw seat, 3-screw, 31-rotating nut, 4-sliding seat, 41-nut one, 42- Locking bolt, 5-fixing pin, 6-column, 61-fixing rod one, 611-screw one, 612-positioning hole, 62-nut two, 63-rectangular hole, 64-rotating rod, 65-pressing block, 66 -fixed rod two, 661-screw rod two, 67-limiting block, 68-nut three, 7-T-shaped seat, 71-fixing bolt, 8-rubber pad.

Detailed ways

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Figures 1-5 show a specific embodiment of the present invention: a multi-angle processing jig for a bone plate, including a base 1, a chute 103 is provided in the middle of the base 1, and T-shaped grooves are provided on both sides of the chute 103 101, the two ends of the base 1 are provided with a screw base 2, the screw base 2 is provided with a screw 3, one end of the base 1 is provided with a T-shaped seat 7, and the two ends of the T-shaped seat 7 are respectively Fix on the base 1 with fixing bolts 71, the other end of the base 1 is provided with a cross-shaped sliding seat 4 and the lower end is located in the chute 103, the sliding seat 4 is threadedly connected with the screw mandrel 3, the sliding seat The two ends of 4 are provided with locking bolt 42, and the head of described locking bolt 42 is located in T-shaped groove 101, and described locking bolt 42 is provided with nut 41, and described sliding seat 4 and T-shaped seat 7 The upper ends of each are sleeved with a fixed rod 61, and the middle part of the fixed rod 61 is evenly distributed with four positioning holes 612 along the circumference. The sliding seat 4 and the T-shaped seat 7 are provided with a fixed pin 5 and are vertically inserted into the positioning In the hole 612, one end of the fixed rod one 61 is provided with a screw rod one 611, and the one end of the fixed rod one 611 is provided with a nut two 62, and the other end of the fixed rod one 61 is provided with a column 6, and the column 6 is connected to two of them. The connecting lines of the opposite positioning holes 612 are parallel, the upper end of the column 6 is provided with a rectangular hole 63, the upper end of the rectangular hole 63 is provided with a rotating rod 64, and the rotating rod 64 extends into the rectangular hole 63 and a pressing block is provided at the bottom 65, the lower end of the column 6 is provided with a fixed rod two 66, the front end of the fixed rod two 66 is provided with a screw two 661, the fixed rod two 66 is sleeved with a limit block 67, and the screw two 661 is provided with Nut 3:68.

In this embodiment, the lower end of the pressing block 65, the bottom of the rectangular hole 63, the top of the second fixing rod 66 and the top of the limiting block 67 are all equipped with rubber pads 8, which can protect the metal bone when the bone plate is clamped. Board surface to avoid scratches.

In this embodiment, the interference fit between the fixed rod 61 and the round hole of the sliding seat 4 is interference fit, and the interference fit between the fixed pin 5 and the positioning hole 612 can reduce the pressure of the fixed rod 61. The shaking error in the round hole of the sliding seat 4, the insertion of the fixing pin 5 in the positioning hole 612 can reduce the rotation error of the fixing rod-61.

In this embodiment, the front end of the screw rod 3 is welded with a rotating nut 31 to facilitate the rotation of the screw rod 3 .

In this embodiment, ear plates 102 are provided at both ends of the base 1 , and round holes for fixing bolts are provided on the ear plates 102 , so as to facilitate the installation of the fixture on the machining center.

Based on the above, the multi-angle processing of a bone plate according to the structure of the present invention, before processing the hole position of the bone plate, first pull out the two fixing pins 5 and loosen the nut 2 62, and the four positioning holes 612 form a cross connection. Line, column 6 is parallel to one of the connecting lines, rotate column 6 so that one end of rectangular hole 63 is located at the upper end and column 6 is perpendicular to the horizontal line, insert fixed pin 5 in positioning hole 612, turn nut 31 to lock fixed rod one 61, The fixed pin 5 reduces the rotation error of the column 6 during processing, and the nut 2 62 reduces the error of the front and rear movement of the column 6 during processing. Put one end of the bone plate into the rectangular hole 63 of the column 6 on the T-shaped seat 7, and turn the rotating rod 64 to make the briquetting block 65 Press down one end of the bone plate, loosen the nut 41, turn the screw mandrel 3 to drive the sliding seat 4 to move, so that the other end of the bone plate enters the rectangular hole 63 of the column 6 on the sliding seat 4, and turn the nut 31 to make the lock Tighten the bolt 42 to fix the sliding seat 4, then turn the rotating rod 64 to make the pressing block 65 press down on the other end of the bone plate, and the clamping of the bone plate is completed above, and the bone plate is drilled by the drilling equipment to complete After the drilling operation, pull out fixed pin 5, unclamp nut two 62, turn rotating rod 64 and make briquetting block 65 upwards, take out bone plate, then two columns 6 are all rotated 180 degrees, make one end of fixed rod two 66 toward First, take out the limit block 67 and nut three 68, loosen nut one 41, turn the screw mandrel 3 to move the sliding seat 4, so that the two holes at both ends of the bone plate can be inserted into the two fixed two holes, and then turn the nut 31 first after inserting 1. Fix the sliding seat 4, then insert the fixing pin 5 into the positioning hole 612, and turn the nut 31 2 to lock the column 6, then insert the limit block 67 into the fixing rod 2 66, and screw the nut 3 68 into the screw rod On the second 661, the limit block 67 is used to compress the bone plate, and the bone plate is fixed through the holes of the bone plate, and then the machining center performs milling operations on one side of the bone plate. 68 unscrews out and takes out the limit block 67, takes the bone plate out from the two fixed rods 66 and flips it over and inserts it again on the two fixed rods 66, inserts the limit block 67 and locks it with the nut three 68. The center performs milling work on the other side. The curved surface with a certain angle on the side of the bone plate is not easy to process. Before milling the side, first loosen the nut 2 62 and take out the fixing pin 5, so that the two columns 6 together with the bone plate face Rotate 90 degrees in one direction, then insert the fixing pin 5 into the positioning hole 612, and lock it with the nut 2 62 at the same time. At this time, one side end of the bone plate faces upward, and the machining center performs milling operations on the side end, and takes it out and fixes it. Pin 5 and loosen nut 2 62, turn the column 6 together with the bone plate 180 degrees so that the other side of the bone plate faces upward, insert the fixed pin 5 and lock it with nut 2 62, and the other end face is fixed by the machining center. For milling operations, the production cost of this fixture is relatively low, and it has the advantages of high positioning accuracy, wear resistance, and convenient use. The fixture is integrated into one body, and the clamping angle of the bone plate can be changed by rotating the column 6, so that the bone plate The side faces of the plates face up for milling by the tool.

The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the inventive concept of the present invention, some modifications and improvements can also be made, and these all belong to the present invention. protection scope of the invention.

Claims (5)

1. A multi-angle processing fixture for a bone plate, characterized in that: it comprises a base, the middle part of the base is provided with a chute, the two sides of the chute are provided with T-shaped grooves, and the two ends of the base are provided with screw rods The screw seat is provided with a screw rod, one end of the base is provided with a T-shaped seat, and the two ends of the T-shaped seat are respectively fixed on the base with fixing bolts, and the other end of the base is provided with a cross-shaped The lower end of the sliding seat is located in the chute, and the threaded connection between the sliding seat and the screw rod, the two ends of the sliding seat are provided with locking bolts, the head of the locking bolt is located in the T-shaped groove, the A nut 1 is arranged on the locking bolt, and a fixed rod 1 is sleeved on the upper ends of the sliding seat and the T-shaped seat. The middle part of the fixed rod 1 is evenly distributed with four positioning holes along the circumference. Both are provided with fixed pins and are vertically inserted in the positioning holes, one end of the fixed rod is provided with a screw one, the screw one is provided with a nut two, the other end of the fixed rod one is provided with a column, and the column Parallel to the line connecting the two opposite positioning holes, the upper end of the column is provided with a rectangular hole, the upper end of the rectangular hole is provided with a rotating rod, and the rotating rod extends into the rectangular hole and a pressing block is provided at the bottom. The lower end of the column is provided with a fixed rod two, and the front end of the fixed rod two is provided with a screw rod two, the fixed rod two is sleeved with a limit block, and the screw rod two is provided with a nut three. 2. The multi-angle processing jig for bone plate according to claim 1, characterized in that: the lower end of the pressing block, the bottom of the rectangular hole, the top of the fixing rod 2 and the top of the limit block are all provided with rubber pads . 3. The multi-angle processing jig for bone plate according to claim 1, characterized in that: said fixing rod 1 is an interference fit with the round hole of the sliding seat, and said fixing pin and the positioning hole are too tight. surplus cooperation. 4. The multi-angle processing jig for bone plate according to claim 1, characterized in that: the front end of the screw rod is welded with a rotating nut. 5. The multi-angle processing jig for bone plate according to claim 1, characterized in that: both ends of the base are provided with ear plates.