CN220389365U - Clamp for precision machining - Google Patents

Abstract

The utility model relates to the technical field of precision machining and discloses a clamp for precision machining, which comprises an outer box seat, wherein a motor box is fixedly arranged on the left side of the outer box seat, a machining table is arranged in the outer box seat, an adjusting groove is formed in the machining table, and a rotating shaft is rotatably connected in the adjusting groove. Through opening the outside removal of two screw thread seats that the inside motor of motor case can be at the axis of rotation to can adjust the position of two clamping components, and then can realize the centre gripping to the machined part, and through the design of rubber pad, can make at two clamping components provide certain protection to the machined part through the rubber pad to the in-process of machined part centre gripping, thereby can avoid two clamping components because the too big surface abrasion that causes the machined part of clamping force, and according to the design of inserted bar, the change rubber pad that can be timely causes the wearing and tearing to the machined part no longer time when can be protected to the machined part promptly.

Description

Clamp for precision machining

Technical Field

The utility model relates to the technical field of precision machining, in particular to a clamp for precision machining.

Background

In precision machining, a three-jaw chuck is often used to clamp a workpiece, and the three-jaw chuck is composed of a chuck body, movable jaws and a jaw driving mechanism. The operation steps of clamping the workpiece by using the three-jaw chuck are as follows: the bevel pinion is rotated by a spanner through the square hole, so that the bevel pinion rotates, and the plane threads on the back face simultaneously drive the three clamping jaws to approach or withdraw from the center, so that the work of clamping workpieces with different diameters by the three-jaw chuck is realized. The whole operation is simpler, and the manual operation is convenient.

In the process of precisely machining the machined part by the three-jaw chuck, the technician finds at least the following problems: in the process of clamping the workpiece, the workpiece is easily clamped by the clamping block due to unstable control of clamping force, and irreversible traces are left on the workpiece.

Disclosure of Invention

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fixture for precision machining, includes outer case seat, the left side fixed mounting of outer case seat has the motor case, the inside of outer case seat is provided with the processing platform, the adjustment tank has been seted up to the inside of processing platform, the inside rotation of adjustment tank is connected with the axis of rotation, the surface threaded connection of axis of rotation has the screw thread seat, the bottom roll connection of screw thread seat has the movable pulley, the sliding tray has been seted up at the top of processing platform, the inside sliding connection of sliding tray has the bracing piece, the top fixed mounting of bracing piece has the clamping assembly.

Preferably, the clamping assembly comprises a connecting block, a clamping plate is fixedly arranged at the top end of the connecting block, a jack is formed in the clamping plate, a plug rod is inserted into the jack, a connecting plate is fixedly arranged at one end of the plug rod, a rubber pad is fixedly arranged at the other side of the connecting plate, a rotating wheel is fixedly arranged at the other end of the plug rod, and a rotating plate is connected to the outer portion of the rotating wheel in a rotating mode.

Preferably, a motor is fixedly arranged in the motor box, an output shaft of the motor is fixedly connected with one side of the rotating shaft, and the other side of the rotating shaft extends to the other side of the outer box seat.

Preferably, two sections of threads are formed on the surface of the rotating shaft, the directions of the two sections of threads are opposite, and the two thread seats are respectively in threaded connection with the two sections of threads.

Preferably, the top of the thread seat is fixedly connected with the supporting rod, the top of the supporting rod is fixedly connected with the clamping assembly, the adjusting groove is communicated with the sliding groove, and the thickness of the sliding groove is smaller than that of the adjusting groove.

Preferably, the number of the rotating plates at one side of the clamping plate is two, and the two rotating plates are symmetrically distributed by taking the horizontal central line of the inserted link as a center.

The beneficial effects of the utility model are as follows: through opening the outside removal of two screw thread seats that the inside motor of motor case can be at the axis of rotation to can adjust the position of two clamping components, and then can realize the centre gripping to the machined part, and through the design of rubber pad, can make at two clamping components provide certain protection to the machined part through the rubber pad to the in-process of machined part centre gripping, thereby can avoid two clamping components because the too big surface abrasion that causes the machined part of clamping force, and according to the design of inserted bar, the change rubber pad that can be timely causes the wearing and tearing to the machined part no longer time when can be protected to the machined part promptly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is a schematic view of a clamping assembly according to the present utility model;

fig. 4 is a schematic diagram of the structure a in fig. 3 according to the present utility model.

In the figure: 1. an outer box seat; 2. a motor case; 3. a processing table; 4. an adjustment tank; 5. a rotating shaft; 6. a screw seat; 7. a sliding wheel; 8. a sliding groove; 9. a support rod; 10. a clamping assembly; 101. a connecting block; 102. a clamping plate; 103. a jack; 104. a rod; 105. a connecting plate; 106. a rubber pad; 107. a rotating wheel; 108. and rotating the plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a fixture for precision machining includes an outer box base 1, a motor box 2 fixedly mounted on the left side of the outer box base 1, a machining table 3 disposed in the outer box base 1, an adjusting groove 4 disposed in the machining table 3, a rotating shaft 5 rotatably connected to the adjusting groove 4, a motor fixedly mounted in the motor box 2, an output shaft of the motor fixedly connected to one side of the rotating shaft 5, and the other side of the rotating shaft 5 extending to the other side of the outer box base 1.

According to the illustration of fig. 1-2, the surface threaded connection of axis of rotation 5 has screw thread seat 6, two sections screw threads have been seted up on the surface of axis of rotation 5, and the opposite direction of two sections screw threads, two screw thread seat 6 respectively with two sections screw thread connection, the bottom roll connection of screw thread seat 6 has movable pulley 7, slide groove 8 has been seted up at the top of processing platform 3, slide groove 8's inside sliding connection has bracing piece 9, the top fixed mounting of bracing piece 9 has clamping assembly 10, the top and the bracing piece 9 fixed connection of screw thread seat 6, the top and the clamping assembly 10 fixed connection of bracing piece 9, adjustment tank 4 communicates with each other with slide groove 8, the thickness of slide groove 8 is less than the thickness of adjustment tank 4.

According to fig. 3-4, the clamping assembly 10 comprises a connecting block 101, a clamping plate 102 is fixedly installed at the top end of the connecting block 101, a jack 103 is formed in the clamping plate 102, a plug rod 104 is inserted in the jack 103, a connecting plate 105 is fixedly installed at one end of the plug rod 104, a rubber pad 106 is fixedly installed at the other side of the connecting plate 105, a rotating wheel 107 is fixedly installed at the other end of the plug rod 104, rotating plates 108 are rotatably connected to the outer portion of the rotating wheel 107, the number of the rotating plates 108 at one side of the clamping plate 102 is two, and the two rotating plates 108 are symmetrically distributed by taking the horizontal center line of the plug rod 104 as a center.

Working principle: when in use, referring to fig. 1-4, by starting the motor inside the motor case 2 to move the two screw bases 6 outside the rotating shaft 5, the positions of the two clamping assemblies 10 can be adjusted, and then the workpiece can be clamped, and by designing the rubber pads 106, the two clamping assemblies 10 can provide a certain protection to the workpiece through the rubber pads 106 in the process of clamping the workpiece, so that the surface abrasion of the workpiece caused by overlarge clamping force of the two clamping assemblies 10 can be avoided, and according to the design of the inserted rod 104, the rubber pads 106 can be replaced timely, namely, the rubber pads 106 can be replaced timely when the workpiece is not protected any more due to the abrasion caused by the long time, wherein the specific use method is as follows: through the inside motor of start motor case 2, the motor output shaft drives axis of rotation 5 rotation, the rotation of axis of rotation 5, and because the setting of the two sections opposite screw threads on axis of rotation 5 surface, can make screw thread seat 6 realize simultaneously to opposite one side or opposite one side at the surface of axis of rotation 5 and remove, thereby can realize that two clamping assemblies 10 inwards or outwards simultaneously, and to the change of rubber pad 106, through pulling pivoted plate 108, make pivoted plate 108 take place to rotate according to pivoted wheel 107, when pivoted plate 108 is parallel with inserted bar 104, can pull rubber pad 106, make inserted bar 104 break away from jack 103, thereby can realize the dismantlement to rubber pad 106.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims (5)

1. The utility model provides a fixture for precision finishing, includes outer case seat (1), its characterized in that: the novel automatic box is characterized in that a motor box (2) is fixedly arranged on the left side of the outer box seat (1), a processing table (3) is arranged in the outer box seat (1), an adjusting groove (4) is formed in the processing table (3), a rotating shaft (5) is rotatably connected to the inner part of the adjusting groove (4), a threaded seat (6) is connected to the surface of the rotating shaft (5) in a threaded manner, a sliding wheel (7) is connected to the bottom end of the threaded seat (6) in a rolling manner, a sliding groove (8) is formed in the top of the processing table (3), a supporting rod (9) is connected to the inner part of the sliding groove (8) in a sliding manner, and a clamping assembly (10) is fixedly arranged on the top end of the supporting rod (9);

clamping assembly (10) are including connecting block (101), splint (102) are fixedly mounted on the top of connecting block (101), jack (103) have been seted up to the inside of splint (102), peg graft in the inside of jack (103) has inserted bar (104), the one end fixed mounting of inserted bar (104) has connecting plate (105), the opposite side fixed mounting of connecting plate (105) has rubber pad (106), the other end fixed mounting of inserted bar (104) has rotation wheel (107), the outside rotation of rotation wheel (107) is connected with rotation board (108).

2. A precision machining jig according to claim 1, wherein: the motor box (2) is internally and fixedly provided with a motor, an output shaft of the motor is fixedly connected with one side of the rotating shaft (5), and the other side of the rotating shaft (5) extends to the other side of the outer box seat (1).

3. A precision machining jig according to claim 1, wherein: two sections of threads are formed on the surface of the rotating shaft (5), the directions of the two sections of threads are opposite, and the two thread seats (6) are respectively in threaded connection with the two sections of threads.

4. A precision machining jig according to claim 1, wherein: the top of screw seat (6) and bracing piece (9) fixed connection, the top and the clamping component (10) fixed connection of bracing piece (9), adjustment tank (4) communicate with each other with sliding tray (8), the thickness of sliding tray (8) is less than the thickness of adjustment tank (4).

5. A precision machining jig according to claim 1, wherein: the number of the rotating plates (108) on one side of the clamping plate (102) is two, and the two rotating plates (108) are symmetrically distributed by taking the horizontal center line of the inserted link (104) as the center.