Lathe fixture with anti-pinch function

Abstract

The utility model relates to the technical field of lathe fixtures, and discloses a lathe fixture with an anti-pinch function, which comprises a connecting seat, a clamping part is arranged in the connecting seat, according to the lathe fixture with the anti-pinch function, when a clamping block abuts against the surface of a pipe, the clamping block is subjected to counter-acting force and pushes a supporting rod, and the clamping block is clamped on the supporting rod. A reset spring is compressed, when a supporting rod is pushed, an inclined rod is pushed, the inclined rod abuts against a push rod and rotates to a certain degree at the hinged position, and therefore the inclined rod pushes the push rod to move downwards, and when the push rod moves downwards, a clamping plate hinged to the bottom of the push rod is inserted into a limiting hole formed in the surface of a limiting strip; the clamping plates abut against each other through abutting of the limiting blocks, so that the clamping blocks cannot continue to move, the threaded sleeves cannot continue to move, then the threaded rods and the rotating columns cannot continue to rotate, a worker stops rotating when knowing that the maximum clamping force is reached, and the situation that the pipe is sunken, deformed and damaged due to continuous clamping is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe clamps, in particular to a lathe clamp with an anti-pinching function. Background Art

[0002] Lathe fixture is a device used to clamp and fix workpieces, and is widely used in lathe processing. Lathe fixtures are usually composed of a chuck, a fixture seat, and a fixture table. The chuck is the core component of the fixture and is used to clamp the workpiece. The shape and structure of the chuck vary according to the shape of the workpiece and the processing requirements. Common chucks include three-jaw chucks, four-jaw chucks, and elastic chucks. The fixture seat is the supporting component of the fixture, which is used to fix the chuck and the fixture table. It usually consists of a base and fixing bolts. The fixture seat can be fastened to the lathe by bolts to ensure the stability and reliability of the fixture.

[0003] When processing some pipes on existing lathes, the pipes need to be fixed by clamps before processing. However, some clamps are tightened by bolts, and the staff are not sure when to clamp them tightest. It is impossible to ensure that the clamps are firm without damaging the pipes. If the clamps continue to be clamped, the pipes may be dented and deformed, causing damage to the workpiece. Utility Model Content

[0004] The utility model aims to provide a lathe clamp with an anti-pinching function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a lathe clamp with an anti-pinching function, comprising a connecting seat, a clamping portion is arranged inside the connecting seat, and the clamping portion comprises:

[0006] A rotating column, wherein the rotating column passes through the connecting seat and is rotatably connected to the connecting seat. A handle is fixedly connected to the surface of the rotating column located outside the connecting seat. When the handle is turned, the handle drives the rotating column to rotate. The rotating column is divided into three sections, and a screw is fixedly connected between every two sections of the rotating column.

[0007] A screw sleeve, the screw sleeve is penetrated by a screw rod and is threadedly connected, a top surface of the screw sleeve is fixedly connected to a slide rod, and a top surface of the slide rod is fixedly connected to a connection block;

[0008] A support rod passes through the connecting block and is slidably connected. A clamping block is fixedly connected to the side of the support rod away from the connecting block. A return spring is fixedly connected between the clamping block and the connecting block. The screw sleeve moves along the screw rod to the middle of the rotating column, and the connecting block drives the clamping block to clamp the pipe through the support rod and the return spring.

[0009] Preferably, a resistance box is fixedly connected to the surface of one side of the connecting block away from the clamping block, an end of the support rod away from the clamping block is hinged with an inclined rod, and an end of the inclined rod away from the support rod is hinged with a push rod. When the clamping block contacts the surface of the pipe, the clamping block is subjected to a reaction force and pushes the support rod, and the reset spring is compressed.

[0010] Preferably, a through hole is opened on the inner side of the abutment box, the push rod passes through the through hole, and the push rod is slidably connected to the inner wall of the abutment box, the inclined rod abuts against the push rod and rotates to a certain extent at the hinged position, so that the inclined rod pushes the push rod to move downward.

[0011] Preferably, a connecting rod is fixedly connected to the bottom surface of the push rod, a limiting block is fixedly connected to the bottom surface of the connecting rod, a clamping plate is hingedly connected to the bottom surface of the connecting rod, and a torsion spring is fixedly connected between the clamping plate and the connecting rod.

[0012] Preferably, a limit strip is fixedly connected to the inner side of the connecting seat, and a limit hole is provided on the surface of the limit strip. When the push rod moves downward, the hinged clamping plate at the bottom of the push rod will be inserted into the limit hole provided on the surface of the limit strip, thereby preventing the clamping block from moving further.

[0013] Preferably, a limiting groove is provided on the top surface of the connecting seat, and the sliding rod passes through the limiting groove and is slidably connected, and the rotating column drives the screw rod to rotate while rotating. Since the sliding rod passes through the limiting groove, the limiting groove limits the sliding rod.

[0014] Compared with the prior art, the utility model provides a lathe clamp with an anti-pinching function, which has the following beneficial effects:

[0015] When the clamping block contacts the surface of the pipe, the clamping block will be subjected to a reaction force and push the support rod, and the reset spring will be compressed. When the support rod is pushed, the inclined rod will be pushed, and the inclined rod will contact the push rod and rotate to a certain extent at the hinged position, so that the inclined rod pushes the push rod to move downward. When the push rod moves downward, the hinged clamping plate at the bottom of the push rod will be inserted into the limiting hole opened on the surface of the limiting strip. Through the interference of the limiting block, the clamping plate will be in conflict, so that the clamping block cannot continue to move, and the screw sleeve cannot continue to move, and further rotation of the screw rod and the rotating column cannot be continued. The staff will know that the maximum clamping force has been reached and stop rotating to prevent continued clamping from causing the pipe to sag and deform, thereby damaging the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the connecting seat of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional enlarged structure of the connecting seat of the utility model;

[0019] Figure 4 It is a schematic diagram of the enlarged structure of the bottom of the push rod of the utility model.

[0020] In the figure: 1. connecting seat; 2. clamping part; 21. rotating column; 22. handle; 23. screw rod; 24. screw sleeve; 25. sliding rod; 26. connecting block; 27. support rod; 28. clamping block; 29. ​​return spring; 210. contact box; 211. inclined rod; 212. push rod; 213. through hole; 214. connecting rod; 215. clamping plate; 216. limit block; 217. torsion spring; 218. limit strip; 219. limit hole; 3. limit groove. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a lathe clamp with anti-pinching function, including a connecting seat 1, a clamping part 2 is arranged inside the connecting seat 1, and the clamping part 2 includes: a rotating column 21, a handle 22, a screw 23, a screw sleeve 24, a sliding rod 25, a connecting block 26, a support rod 27, a clamping block 28, a reset spring 29, a contact box 210, a diagonal rod 211, a push rod 212, a through hole 213, a connecting rod 214, a clamping plate 215, a limit block 216, a torsion spring 217, a limit strip 218, and a limit hole 219.

[0022] The rotating column 21 penetrates the connecting seat 1, and the rotating column 21 is rotatably connected to the connecting seat 1. The surface of the rotating column 21 located outside the connecting seat 1 is fixedly connected with a handle 22. When in use, the columnar workpiece or pipe to be processed is placed between the symmetrical clamping blocks 28, and the handle 22 is turned. The handle 22 will drive the rotating column 21 to rotate. The rotating column 21 is divided into three sections, and a screw 23 is fixedly connected between each two sections of the rotating column 21. The screw sleeve 24 is penetrated by the screw 23 and threadedly connected. The top surface of the screw sleeve 24 is fixedly connected There is a sliding rod 25, the top surface of which is fixedly connected with a connecting block 26, a support rod 27 penetrates the connecting block 26 and is slidably connected, a clamping block 28 is fixedly connected to the side of the support rod 27 away from the connecting block 26, a return spring 29 is fixedly connected between the clamping block 28 and the connecting block 26, the screw sleeve 24 moves along the screw rod 23 toward the middle of the rotating column 21, and the screw sleeve 24 will drive the connecting block 26 to move together through the sliding rod 25, and the connecting block 26 will drive the clamping block 28 to clamp the pipe through the support rod 27 and the return spring 29. A contact box 210 is fixedly connected to the surface of the side of the connecting block 26 away from the clamping block 28, and an inclined rod 211 is hinged to one end of the support rod 27 away from the clamping block 28, and a push rod 212 is hinged to one end of the inclined rod 211 away from the support rod 27. When the clamping block 28 contacts the surface of the pipe, the clamping block 28 is subjected to a reaction force and pushes the support rod 27, and the reset spring 29 is compressed. When the support rod 27 is pushed, the inclined rod 211 is pushed, and the inclined rod 211 contacts the push rod 212 and rotates to a certain extent at the hinged position. A through hole 213 is provided on the inner side of the contact box 210, and the push rod 212 passes through the through hole 213, and the push rod 212 is slidably connected to the inner wall of the contact box 210, and the inclined rod 211 contacts the push rod 212 and rotates to a certain extent at the hinged position, so that the inclined rod 211 pushes the push rod 212 to move downward. The bottom surface of the push rod 212 is fixedly connected with a connecting rod 214, the bottom surface of the connecting rod 214 is fixedly connected with a limiting block 216, the bottom surface of the connecting rod 214 is hinged with a clamping plate 215, and a torsion spring 217 is fixedly connected between the clamping plate 215 and the connecting rod 214. The inner side of the connecting seat 1 is fixedly connected with a limiting strip 218, and a limiting hole 219 is provided on the surface of the limiting strip 218. When the push rod 212 moves downward, the clamping plate 215 hinged at the bottom of the push rod 212 will be inserted into the limiting hole 219 provided on the surface of the limiting strip 218, and the clamping plate 215 is resisted by the limiting block 216, so that the clamping block 28 cannot continue to move, and the screw sleeve 24 cannot continue to move. A limiting groove 3 is provided on the top surface of the connecting seat 1, and the sliding rod 25 passes through the limiting groove 3 and is slidably connected. When the rotating column 21 rotates, it will drive the screw rod 23 to rotate. Since the sliding rod 25 passes through the limiting groove 3, the limiting groove 3 limits the sliding rod 25, so that when the screw rod 23 rotates, the screw sleeve 24 moves along the screw rod 23 to the middle of the rotating column 21.

[0023] Based on the above embodiment, when in use, the columnar workpiece or pipe to be processed is placed between the symmetrical clamping blocks 28, and the handle 22 is turned. The handle 22 will drive the rotating column 21 to rotate, and the rotating column 21 will drive the screw rod 23 to rotate while rotating. Since the slide bar 25 passes through the limiting groove 3, the limiting groove 3 limits the slide bar 25, so that when the screw rod 23 rotates, the screw sleeve 24 moves along the screw rod 23 to the middle of the rotating column 21, and the screw sleeve 24 drives the connecting block 26 to move together through the slide bar 25. The connecting block 26 drives the clamping block 28 to clamp the pipe through the support rod 27 and the return spring 29. When the clamping block 28 contacts the surface of the pipe, the clamping block 28 will be subjected to a reaction force and push the support rod 27, and And the reset spring 29 is compressed. When the support rod 27 is pushed, the inclined rod 211 is pushed, and the inclined rod 211 contacts the push rod 212 and rotates to a certain extent at the hinged position, so that the inclined rod 211 pushes the push rod 212 to move downward. When the push rod 212 moves downward, the hinged clamping plate 215 at the bottom of the push rod 212 is inserted into the limiting hole 219 opened on the surface of the limiting strip 218, and the clamping plate 215 is contacted by the limiting block 216, so that the clamping block 28 cannot continue to move, and the screw sleeve 24 cannot continue to move, and then the screw rod 23 and the rotating column 21 cannot continue to rotate. The staff knows that the maximum clamping force has been reached and stops rotating to prevent continued clamping from causing the pipe to be dented and deformed, thereby damaging the workpiece.

[0024] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A lathe clamp with an anti-pinching function, comprising a connecting seat (1), characterized in that: A clamping portion (2) is provided inside the connection seat (1), and the clamping portion (2) comprises: A rotating column (21), the rotating column (21) passes through the connecting seat (1), and the rotating column (21) is rotatably connected to the connecting seat (1), a handle (22) is fixedly connected to the surface of the rotating column (21) located outside the connecting seat (1), the rotating column (21) is divided into three sections, and a screw (23) is fixedly connected between every two sections of the rotating column (21); A screw sleeve (24), wherein the screw sleeve (24) is penetrated by the screw rod (23) and is threadedly connected, a sliding rod (25) is fixedly connected to the top surface of the screw sleeve (24), and a connecting block (26) is fixedly connected to the top surface of the sliding rod (25); A support rod (27) passes through the connecting block (26) and is slidably connected thereto; a clamping block (28) is fixedly connected to the side of the support rod (27) away from the connecting block (26); a return spring (29) is fixedly connected between the clamping block (28) and the connecting block (26).

2. The lathe clamp with anti-pinching function according to claim 1, characterized in that: A resistance box (210) is fixedly connected to a surface of one side of the connection block (26) away from the clamping block (28); an end of the support rod (27) away from the clamping block (28) is hingedly connected to an inclined rod (211); and an end of the inclined rod (211) away from the support rod (27) is hingedly connected to a push rod (212).

3. The lathe clamp with anti-pinching function according to claim 2, characterized in that: A through hole (213) is provided on the inner side of the abutment box (210), the push rod (212) passes through the through hole (213), and the push rod (212) is slidably connected to the inner wall of the abutment box (210).

4. The lathe clamp with anti-pinching function according to claim 3 is characterized in that: The bottom surface of the push rod (212) is fixedly connected to a connecting rod (214), the bottom surface of the connecting rod (214) is fixedly connected to a limiting block (216), the bottom surface of the connecting rod (214) is hinged with a clamping plate (215), and a torsion spring (217) is fixedly connected between the clamping plate (215) and the connecting rod (214).

5. The lathe clamp with anti-pinching function according to claim 1, characterized in that: A limiting strip (218) is fixedly connected to the inner side of the connection seat (1), and a limiting hole (219) is provided on the surface of the limiting strip (218).

6. The lathe clamp with anti-pinching function according to claim 1, characterized in that: A limiting groove (3) is provided on the top surface of the connecting seat (1), and the sliding rod (25) passes through the limiting groove (3) and is slidably connected.

Images