CN220217556U - Tubular workpiece clamping tool - Google Patents

Abstract

The application discloses tubular workpiece clamping tool relates to the technical field of machining, and including base and rotation connection in the pivot of base, the pivot is used for being connected with the actuating source and rotates through the actuating source drive, and sliding connection has two holders on the base, is provided with the linkage subassembly on the base, and when the pivot forward and backward rotated, can drive two holders through the linkage subassembly respectively and be opposite to and be away from the slip mutually. The clamping force of the clamp is insufficient to fix the workpiece due to the fact that errors exist in manual operation in the process of clamping the workpiece by the clamp can be improved, and the clamping force stabilizing device has the effect of stabilizing the workpiece.

Description

Tubular workpiece clamping tool

Technical Field

The application relates to the technical field of machining, in particular to a tubular workpiece clamping tool.

Background

At present, the fixture is a common fixture in the field of machining, and corresponding different fixtures are required to be used according to the requirements on the shape, the precision and the like of different workpieces, and a special clamping fixture is required to be used for fixing the workpieces in the machining process of the tubular workpieces.

The existing clamping tool for tubular workpieces generally comprises two types, namely outer periphery clamping and inner wall supporting. Peripheral clamping is generally the fixing of a tubular workpiece by applying a clamping force to the periphery of the workpiece with two clamping jaws or support blocks shaped like clamping jaws; the inner wall support is generally used for fixing the tubular workpiece by extending into the tubular workpiece and propping against the inner wall of the workpiece through the clamping tool.

However, some existing tool clamps need manual clamping and fixing when clamping tubular workpieces, and the workpieces are damaged due to the fact that the workpieces are offset during machining due to insufficient clamping force or unstable fixing in the clamping process.

Disclosure of Invention

In order to solve the problem that the clamp is insufficient in clamping force and is not firm for workpiece fixation due to the fact that errors exist in manual operation in the process of clamping a workpiece, the application provides a tubular workpiece clamping tool.

The application provides a tubular workpiece clamping tool, adopts following technical scheme:

a tubular workpiece clamping tool comprises a base and a rotating shaft rotationally connected to the base, wherein the rotating shaft is used for being connected with a driving source and driven to rotate through the driving source.

The base is provided with a linkage assembly, and when the rotating shaft rotates positively and negatively, the two clamping pieces can be driven to slide oppositely and reversely through the linkage assembly.

Through adopting above-mentioned technical scheme, the positive and negative rotation of pivot can realize that two holders are in opposite directions and are away from the slip mutually to realize fastening and loosening tubular work piece, the actuating source can use servo motor, and actuating source stop operation can lock two holders positions, can last more firmly grip tubular work piece like this, and the reliability is strong, convenient operation.

Optionally, the clamping piece includes the circular arc board, and the circular arc board arc mouth of two clamping pieces is relative.

Through adopting above-mentioned technical scheme, the surface of tubular work piece can be laminated more to the inner wall of two circular arc boards that the arc mouth is relative, and area of contact when the increase centre gripping to make tubular work piece more stably fixed.

Optionally, a sliding groove is formed in the base, a limiting groove is formed in the inner wall, opposite to the sliding groove, of the base, and a sliding plate sliding in the limiting groove is arranged at one end of the clamping piece.

Through adopting above-mentioned technical scheme, the clamping piece can sliding connection on the base to can slide along the fixed direction that the spacing groove was seted up.

Optionally, an anti-slip pad is arranged on the inner wall of the arc plate.

Through adopting above-mentioned technical scheme, slipmat is direct to contact with tubular work piece, and the slipmat can laminate tubular work piece surface more, and the slipmat can provide bigger frictional force to let the holder fix the work piece more firmly.

Optionally, the arc plate is detachably connected with the sliding plate.

Through adopting above-mentioned technical scheme, when the tubular work piece model of required centre gripping is different, the detachable connection of circular arc board and slide can let the user change the circular arc board that suits more conveniently.

Optionally, pivot one end is fixed with the carousel that is located the spout, and two arc guide slots have been seted up to carousel be close to slide one side, and two arc guide slots revolute a set axis central symmetry setting, be provided with the round pin post of slip in the arc guide slot on the slide, when two slides moved in opposite directions, two round pin posts are close to the carousel center gradually.

Through adopting above-mentioned technical scheme, the pivot drives the carousel and rotates, and the round pin post can slide along the arc guide way when the carousel rotates, and the slip of round pin post in revolute the arc guide way of dish axis central symmetry drives two holders and is close to each other or keep away from.

Optionally, be provided with two-way lead screw in the spout, two slide respectively with the different screw thread section threaded connection of two-way lead screw, the pivot rotation can drive two-way lead screw rotates.

Through adopting above-mentioned technical scheme, when the two-way lead screw of pivot drive rotates, two slide can be close to each other or keep away from along the lead screw through the screw thread to realize that two holders are close to each other or keep away from, in order to press from both sides tight or loosen the work piece.

Optionally, a first bevel gear is coaxially fixed at one end of the rotating shaft, and a second bevel gear meshed with the first bevel gear is coaxially fixed on the bidirectional screw rod.

Through adopting above-mentioned technical scheme, the pivot drives first bevel gear and rotates together, and first bevel gear rotates and drives the second bevel gear rotation with it meshing, and the second bevel gear rotates and drives two-way lead screw rotation.

In summary, the present application includes at least one of the following beneficial effects:

1. the rotating shaft is connected with the linkage mechanism to drive the two clamping pieces to move in opposite directions or in opposite directions so as to clamp or loosen the tubular workpiece, and can be fixedly connected with the driving source to stably clamp the workpiece by utilizing the self-locking function of the driving source;

2. the anti-slip pad is arranged on the inner wall of the arc plate, so that the clamping piece can more firmly fix the workpiece, the workpiece cannot slide, and the outer wall of the workpiece can be protected from being damaged;

3. the arc plates are detachably connected with the sliding plate, so that a user can conveniently replace the arc plates with different types to clamp the tubular workpieces with different types.

Drawings

FIG. 1 is an overall schematic of example 1 of the present application;

FIG. 2 is a schematic side cross-sectional view of example 1 of the present application;

FIG. 3 is a schematic front view of a turntable according to example 1 of the present application;

fig. 4 is a schematic side sectional view of example 2 of the present application.

Reference numerals illustrate: 1. a base; 11. a chute; 12. a limit groove; 13. a limiting plate; 2. a rotating shaft; 21. a bearing; 3. a clamping member; 31. an arc plate; 311. an arc opening; 32. a slide plate; 33. an anti-slip pad; 34. a positioning pin; 4. a linkage assembly; 41. a turntable; 411. an arc-shaped guide groove; 42. a pin; 43. a two-way screw rod; 44. a first bevel gear; 45. a second bevel gear; 46. a sliding block.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

Example 1:

this application embodiment 1 discloses a tubular workpiece clamping fixture, refer to fig. 1 and 2, a tubular workpiece clamping fixture includes square base 1 and rotates the pivot 2 of being connected in base 1, base 1 is passed to pivot 2 one end, and realize being connected with the rotation of base through fixing at the bearing 21 of base 1, base 1 one end and the output shaft fixed connection of actuating source are kept away from to pivot 2, actuating source is servo motor, can be rotated by actuating source drive pivot 2, keep away from 2 one side sliding connection of pivot 2 have two clamping pieces 3 that are used for the centre gripping tubular workpiece on base 1, still be provided with link assembly 4 in base 1, when pivot 2 carries out positive and negative rotation through the actuating source drive, can drive two clamping pieces 3 and move in opposite directions and dorsad through link assembly 4, thereby realize pressing from both sides tight and loosen tubular workpiece.

Referring to fig. 1 and 2, two clamping pieces 3 are provided with arc plates 31 on one side far away from the base 1, and arc openings 311 of the two arc plates 31 are arranged oppositely, the contact surface of the two arc plates 31 is smooth when clamped, the arc openings 311 can be more attached to the surface of a tubular workpiece, the contact area of the arc plates 31 and the tubular workpiece is larger, the pressure of the contact surface is reduced, and the damage of the workpiece can be avoided when the tubular workpiece is fixed.

Referring to fig. 1 and 2, a sliding groove 11 is formed in one side, far away from a rotating shaft 2, of a base 1, one end of the rotating shaft 2 penetrates through the base 1 and is placed in the sliding groove 11, limiting grooves 12 are formed in two opposite inner walls of the sliding groove 11, a clamping piece 3 further comprises a sliding plate 32 capable of sliding in the limiting grooves 12, the sliding plate 32 can freely slide along the direction in which the limiting grooves 12 are formed, and limiting plates 13 are further arranged at two ends of the limiting grooves 12 to prevent the sliding plate 32 from falling off the base 1.

Referring to fig. 1 and 2, the inner wall of the circular arc plate 31 is covered with the anti-slip pad 33, the anti-slip pad 33 is fully paved on the inner wall of the circular arc plate 31, the anti-slip pad 33 is made of rubber, and when the workpiece is clamped, the anti-slip pad 33 can provide larger friction force, so that the clamping piece 3 can firmly fix the workpiece.

Referring to fig. 1 and 2, the circular arc plate 31 and the sliding plate 32 together form the clamping piece 3, the circular arc plate 31 and the sliding plate 32 are detachably connected in a bolt connection mode, the positioning pin 34 is fixed on the circular arc plate 31, the positioning hole for inserting the positioning pin 34 is formed in the sliding plate 32, and the circular arc plate 31 and the sliding plate 32 can be rapidly positioned through the positioning pin 34 and the positioning hole, so that the installation of bolts is facilitated. The size of the arc opening 311 of the arc plate 31 is different, and when the types of the tubular workpieces to be clamped are different, a user can conveniently replace the corresponding arc plate 31.

Referring to fig. 2 and 3, one end of the rotating shaft 2 is coaxially fixed with a turntable 41 located in the chute 11, the turntable 41 is disc-shaped, two arc-shaped guide slots 411 are formed on one side of the turntable 41, which is close to the sliding plates 32, and two sliding plates 32 are respectively fixed with a pin 42 sliding in the arc-shaped guide slots 411 on one side, which is far away from the arc-shaped plate 31, and when the rotating shaft rotates, the two pins 42 move along the arc-shaped guide slots 411 and gradually get close to the center of the turntable 41, the two sliding plates 32 move in opposite directions, so that the rotation of the turntable 41 is converted into the movement of the two sliding plates 32 along the chute 11.

The implementation principle of the tubular workpiece clamping tool of the embodiment 1 of the application is as follows: during the use, can rotate through driving source drive pivot 2, two round pin posts 42 can remove along arc guide slot 411 for two slide 32 can move in opposite directions, make two circular arc boards 31 clamp tubular work piece, through servo motor's auto-lock performance, make tubular work piece position can be locked, reduce manual operation and improve work efficiency, and be difficult for because the manual work does not press from both sides the reason that leads to the possibility of work piece processing time position to remove, just can rotate through reverse drive pivot 2, thereby carry out tubular work piece's dismantlement.

Example 2:

example 2 and example 1 of the present application differ in that: referring to fig. 4, one end of the rotating shaft 2 is fixed with a first bevel gear 44 positioned in the chute 11, and the rotating shaft 2 is coaxially disposed with the first bevel gear 44.

Two slide plates 32 are fixedly connected with a slide block 46 at one side close to the slide groove 11, two-way screw rods 43 are penetrated in the two slide blocks 46, threads meshed with different thread sections of the two-way screw rods 43 are arranged in the two slide blocks 46, and the two slide blocks 46 are respectively in threaded connection with different thread sections of the two-way screw rods 43.

A second bevel gear 45 is coaxially fixed in the middle of the bidirectional screw rod 43, and the first bevel gear 44 is meshed with the second bevel gear 45. When the rotating shaft 2 rotates, the first bevel gear 44 is driven to synchronously rotate, the first bevel gear 44 drives the second bevel gear 45 perpendicular to the axis of the first bevel gear 44 to rotate, the second bevel gear 45 drives the coaxially fixed bidirectional screw 43 to rotate, and two sliding blocks 46 at two ends of the bidirectional screw 43 move along the axis direction of the bidirectional screw through threaded engagement.

The forward and reverse rotation of the driving source can control the forward and reverse rotation of the bidirectional screw rod 43, and the two sliding plates 32 can be mutually close to or far away from each other along the bidirectional screw rod 43, so that the two clamping pieces 3 are mutually close to or far away from each other to clamp or loosen a workpiece.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A tubular workpiece clamping tool is characterized in that: the device comprises a base (1) and a rotating shaft (2) rotatably connected to the base (1), wherein the rotating shaft (2) is used for being connected with a driving source and driven to rotate by the driving source;

the base (1) is provided with two clamping pieces (3) in a sliding connection mode, the base (1) is provided with a linkage assembly (4), and when the rotating shaft (2) rotates positively and negatively, the two clamping pieces (3) can be driven to slide oppositely and reversely through the linkage assembly (4).

2. A tubular workpiece clamping fixture as claimed in claim 1, wherein: the clamping pieces (3) comprise arc plates (31), and arc openings (311) of the arc plates (31) of the two clamping pieces (3) are opposite.

3. A tubular workpiece clamping fixture as claimed in claim 1, wherein: the base (1) is provided with a sliding groove (11), opposite inner walls of the sliding groove (11) are provided with limiting grooves (12), and one end of the clamping piece (3) is provided with a sliding plate (32) sliding in the limiting grooves (12).

4. A tubular workpiece clamping fixture as claimed in claim 2, wherein: an anti-slip pad (33) is arranged on the inner wall of the arc plate (31).

5. A tubular workpiece clamping fixture as claimed in claim 2, wherein: the arc plate (31) is detachably connected with the sliding plate (32).

6. A tubular workpiece clamping fixture as claimed in claim 3, wherein: the rotary table is characterized in that one end of the rotary shaft (2) is provided with a rotary table (41) located in the sliding groove (11), two arc-shaped guide grooves (411) are formed in one side, close to the sliding plate (32), of the rotary table (41), the two arc-shaped guide grooves (411) are symmetrically arranged around the axis center of the rotary table (41), pin columns (42) sliding in the arc-shaped guide grooves (411) are fixedly arranged on the sliding plate (32), and when the two sliding plates (32) move in opposite directions, the two pin columns (42) are gradually close to the center of the rotary table (41).

7. A tubular workpiece clamping fixture as claimed in claim 3, wherein: the sliding groove (11) is internally provided with a bidirectional screw rod (43), two sliding plates (32) are respectively in threaded connection with different threaded sections of the bidirectional screw rod (43), and the rotation of the rotating shaft (2) can drive the bidirectional screw rod (43) to rotate.

8. The tubular workpiece clamping fixture of claim 7, wherein: a first bevel gear (44) is coaxially fixed at one end of the rotating shaft (2), and a second bevel gear (45) meshed with the first bevel gear (44) is coaxially fixed on the bidirectional screw rod (43).