CN223199044U - Workpiece clamping mechanism - Google Patents

Abstract

The application discloses a workpiece clamping mechanism, which belongs to the technical field of workpiece clamping and comprises a mounting plate, a first clamping device and a second clamping device, wherein the mounting plate is connected with a mechanical arm, two ends of the mounting plate are connected with fixing plates, the first clamping device is connected with the fixing plates at the first end of the mounting plate, the second clamping device is connected with the fixing plates at the second end of the mounting plate, a clamping groove is formed in a spline shaft, the clamping groove is positioned below a spline, and the first clamping device and the second clamping device are inserted into the clamping groove, so that the workpiece can be clamped by the spline shaft smoothly, and the workpiece can be driven to move.

Description

Workpiece clamping mechanism

Technical Field

The application relates to the technical field of workpiece clamping, in particular to a workpiece clamping mechanism.

Background

In the field of mechanical manufacturing, the wide application of automated equipment greatly improves production efficiency and machining precision. Particularly, in the workpiece conveying and assembling process, the clamping mechanism is used as a key component, so that the working efficiency is influenced, and the quality control of a final product is directly related. Along with popularization and development of the industrial 4.0 concept, higher requirements are put on rapid and accurate clamping and releasing of various complex workpieces, so that an efficient and reliable clamping mechanism becomes an indispensable important component in a modern production line. For example, in the manufacture of clutches, precise handling of workpieces with splined shafts is required.

Currently, the clamping mechanisms used in such workpiece handling applications are mainly pneumatic clamps, hydraulic clamps, electric clamps, and the like. However, one problem that is common to the conventional gripping mechanisms described above is that they have difficulty in achieving a stable and reliable gripping effect when gripping workpieces of irregular shape or with complex structures (such as clutches with spline shafts), resulting in the risk that the workpieces may come loose or fall off during handling. Particularly, in the production process of the clutch, since other parts of the clutch being processed except the spline shaft cannot be in hard contact with the mechanical device, how to accurately and firmly clamp the spline shaft through a simple mechanical structure is a problem to be solved in the prior art.

Disclosure of utility model

The utility model provides a workpiece clamping mechanism for smoothly clamping a spline shaft and driving a workpiece to move.

The utility model provides a workpiece clamping mechanism which adopts the following technical scheme:

The workpiece clamping mechanism comprises a mounting plate, a first clamping device and a second clamping device, wherein the mounting plate is connected with a mechanical arm, two ends of the mounting plate are respectively connected with a fixing plate, the first clamping device is connected with the fixing plate at the first end of the mounting plate, the second clamping device is connected with the fixing plate at the second end of the mounting plate, a clamping groove is formed in a spline shaft, the clamping groove is located below a spline, and the first clamping device and the second clamping device are inserted into the clamping groove and can clamp a workpiece through the spline shaft.

Through adopting above-mentioned technical scheme, start first clamping device and second clamping device, both insert in the draw-in groove on the integral key shaft, the draw-in groove carries out spacingly to first clamping device and second clamping device clamping position, and has improved the stability of centre gripping, has realized the effective centre gripping to the work piece through the integral key shaft to can drive the work piece and remove.

Preferably, the first clamping device and the second clamping device have the same structure and comprise an air cylinder, clamping plates and connecting pieces, the air cylinder is connected with the corresponding fixing plates, a driving shaft of the air cylinder penetrates through the fixing plates, the clamping plates are arranged between the two fixing plates, the clamping plates are connected with the air cylinder through the connecting pieces, and two clamping plates are far away from one ends of the air cylinder and are inserted into the clamping grooves, so that clamping of the spline shaft is achieved.

Through adopting above-mentioned technical scheme, start the cylinder, cylinder drive grip block removes, makes two grip blocks be close to each other, until the grip block inserts in the draw-in groove to realize the effective centre gripping of integral key shaft.

Preferably, the clamping groove is formed in the circumferential wall of the spline shaft in a surrounding mode, the end face, far away from the air cylinder, of the clamping plate is inwards recessed to form a clamping portion, the clamping portion is abutted to the clamping groove of the spline shaft, and the two clamping portions are matched with radian of the clamping groove.

Through adopting above-mentioned technical scheme, the clamping part is the depressed part, and two clamping parts and draw-in groove's radian match, when the centre gripping integral key shaft for the mechanism can more stably centre gripping integral key shaft is got to the work piece clamp, has improved the precision and the reliability of centre gripping.

Preferably, the fixing plate is fixedly connected with a guide plate, and the guide plate is in sliding abutting connection with the bottom of the clamping plate and is used for guiding the clamping plate.

Through adopting above-mentioned technical scheme, realized the effective direction to the grip block, improved the stability and the precision of grip block motion in the centre gripping process.

Preferably, the first clamping device and the second clamping device further comprise a sliding block, the sliding block is arranged between the clamping plate and the air cylinder, the side wall of the sliding block is connected with the air cylinder through a connecting piece, the bottom of the sliding block is connected with the clamping plate, one end, far away from the air cylinder, of the clamping plate protrudes out of the sliding block, and the top of the sliding block is in sliding butt with the bottom of the mounting plate.

Through adopting above-mentioned technical scheme, the slider has increased the area of contact between cylinder and the grip block, and then has increased the stability that the grip block removed. And the clamping plate is far away from one end of the cylinder and protrudes out of the sliding block, so that the clamping of the clamping plate to the spline shaft is not affected. The top of the sliding block is in sliding butt with the bottom of the mounting plate, so that the mounting plate can guide the sliding block, and the guide plate also has a guiding effect on the clamping plate, so that the action of clamping the spline shaft is more stable, and the clamping precision is higher.

Preferably, the clamping plate is provided with a groove, and the sliding block is inserted into the groove.

Through adopting above-mentioned technical scheme, the recess of seting up on the grip block matches with the slider bottom for the slider can peg graft in the recess, thereby ensures that the grip block can follow the slider steadily and remove under the cylinder drive, has improved stability and reliability in the centre gripping process.

Preferably, the sliding block is perpendicular to the two sides of the direction of the sliding block driven by the air cylinder, the baffle is connected with the mounting plate and the fixing plate, and the baffle is in sliding butt joint with the sliding block and the clamping plate.

Through adopting above-mentioned technical scheme, the baffle that the slider both sides set up has not only strengthened the stability of whole clamp and has got the mechanism, still through being connected with mounting panel and fixed plate, has improved the direction precision and the structural rigidity in the centre gripping process, has ensured the steady and the accuracy of centre gripping action.

Preferably, a holding chamber is defined between the slider, the clamping plate, the mounting plate and the baffle plate, and the holding chamber can hold the spline of the spline shaft when the spline shaft is clamped.

Through adopting above-mentioned technical scheme, make press from both sides and get the centre gripping of mechanism to the integral key shaft, and can not produce the interference, effectively improve clamping stability to can reduce the integral key shaft and take place the skew or drop the possibility in the centre gripping in-process, ensure the security and the reliability of centre gripping operation.

Preferably, the connecting piece adopts a bolt.

Through adopting above-mentioned technical scheme, the connecting piece adopts the bolt, and the assembly and the maintenance of first clamping device and second clamping device of being convenient for improve and press from both sides and get the use convenience and the stability of mechanism.

In summary, the utility model has the following beneficial effects:

1. Starting the first clamping device and the second clamping device, wherein the first clamping device and the second clamping device are inserted into clamping grooves on the spline shaft, the clamping positions of the first clamping device and the second clamping device are limited by the clamping grooves, the clamping stability is improved, the workpiece is effectively clamped by the spline shaft, and the workpiece can be driven to move;

2. The clamping plate is driven by the air cylinder to enter the clamping groove, so that accurate clamping of the spline shaft is realized, the radian of the clamping part at the end part of the clamping plate is matched with that of the clamping groove, the clamping stability is further improved, and the clamping device can adapt to the carrying requirement of more complex workpieces;

3. The mounting plate, the guide plate and the baffle are mutually matched to further limit the movement of the clamping plate, so that the clamping precision of the spline shaft is further improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a workpiece gripping mechanism.

Fig. 2 is a schematic view of the positions of the first clamping device and the second clamping device.

Fig. 3 is a schematic view of the overall structure of the first clamping device and the second clamping device.

Fig. 4 is a schematic view of the connection between the slider and the clamping plate.

Reference numerals illustrate:

1. The device comprises a mounting plate, 11 parts of movable grooves, 2 parts of fixed plates, 3 parts of first clamping devices, 31 parts of air cylinders, 32 parts of sliding blocks, 321 parts of fixed holes, 33 parts of clamping plates, 331 parts of clamping parts, 332 parts of grooves, 34 parts of connecting pieces, 4 parts of second clamping devices, 5 parts of guide plates, 6 parts of baffle plates, 7 parts of holding chambers, 8 parts of spline shafts, 81 parts of clamping grooves.

Detailed Description

In order that those skilled in the art will better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.

In describing embodiments of the present application, words such as "for example" or "for example" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "such as" or "for example" in embodiments of the application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "or" for example "is intended to present related concepts in a concrete fashion.

In the description of embodiments of the application, the term "plurality" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

A workpiece clamping mechanism, referring to fig. 1 and 2, comprises a mounting plate 1, a first clamping device 3 and a second clamping device 4. The mounting plate 1 is fixedly connected with the mechanical arm. Both ends of the mounting plate 1 are fixedly connected with a fixing plate 2. The first clamping device 3 is connected with the fixed plate 2 at the first end of the mounting plate 1, and the second clamping device 4 is connected with the fixed plate 2 at the second end of the mounting plate 1. The spline shaft 8 is provided with a clamping groove 81, and the clamping groove 81 is positioned below the spline. The first clamping device 3 and the second clamping device 4 are inserted into the clamping groove 81, so that the workpiece can be clamped through the spline shaft 8.

The first clamping device 3 and the second clamping device 4 are started, and are inserted into the clamping grooves 81 on the spline shaft 8, the clamping grooves 81 limit the clamping positions of the first clamping device 3 and the second clamping device 4, the clamping stability is improved, the effective clamping of the workpiece through the spline shaft 8 is achieved, and the workpiece can be driven to move.

Referring to fig. 1, a mounting plate 1 is horizontally disposed and a fixing plate 2 is vertically disposed.

Referring to fig. 2 and 3, the first clamping device 3 and the second clamping device 4 are identical in structure, and each include an air cylinder 31, a slider 32, a clamping plate 33, and a connecting member 34. The cylinder 31 is fixedly connected with the fixed plate 2, and a driving shaft of the cylinder 31 passes through the fixed plate 2. The slide 32 and the clamping plate 33 are both arranged between the two fixing plates 2.

Referring to fig. 3 and 4, the slider 32 includes a first portion and a second portion, which are integrally formed, wherein the first portion is disposed adjacent to the cylinder 31. The thickness of the first portion is less than the thickness of the second portion and the top surfaces of the first and second portions are flush.

Referring to fig. 3 and 4, a fixing hole 321 is formed in the top surface of the first portion, and the fixing hole 321 is T-shaped. The connecting piece 34 adopts the bolt, and the head card of connecting piece 34 is located in fixed orifices 321, and the afterbody of connecting piece 34 and the drive shaft threaded connection of cylinder 31 realize slider 32 and cylinder 31's fixed. The diameter of the connector 34 is greater than the thickness of the first portion, facilitating adjustment of the connector 34.

Referring to fig. 4, the top of the slider 32 is slidably abutted against the top of the mounting plate 1, and a movable slot 11 for moving the connecting piece 34 is formed in the mounting plate 1.

Referring to fig. 3 and 4, the top surface of the clamping plate 33 is provided with a groove 332, the groove 332 is matched with the bottom of the second portion, and the bottom of the second portion is inserted into the groove 332. The slider 32 and the clamp plate 33 are fixed by a plurality of bolts.

The cylinder 31 is started, and the cylinder 31 drives the clamping plates 33 to move, so that the two clamping plates 33 are close to each other until the clamping plates 33 are inserted into the clamping grooves 81, and effective clamping of the spline shaft 8 is achieved.

Referring to fig. 1 and 3, the end surface of the clamping plate 33 remote from the cylinder 31 is recessed inward to form a clamping portion 331, and the clamping portion 331 is provided with a chamfer. The clamping groove 81 is annularly arranged on the circumferential wall of the spline shaft 8, and the two clamping portions 331 are matched with the radian of the clamping groove 81. When the spline shaft 8 is clamped, the clamping portion 331 abuts against the clamping groove 81.

The clamping part 331 is the depressed part, and two clamping parts 331 and draw-in groove 81's radian match, when centre gripping integral key shaft 8 for the mechanism is got to the work piece clamp can more stably centre gripping integral key shaft 8, has improved the precision and the reliability of centre gripping.

Referring to fig. 2 and 4, the fixing plate 2 is fixedly connected with a guide plate 5, and the guide plate 5 is horizontally disposed. The guide plate 5 is provided between the two fixing plates 2. The fixed plate 2 is abutted with the bottom of the clamping plate 33, so that effective guiding of the clamping plate 33 is realized, and the stability and precision of the movement of the clamping plate 33 in the clamping process are improved.

Referring to fig. 2 and 4, two sides of the slider 32 perpendicular to the direction of the cylinder 31 driving the slider 32 are provided with a baffle 6, the baffle 6 is vertically arranged, the top end of the baffle 6 is fixedly connected with the mounting plate 1, two ends of the baffle 6 are correspondingly arranged with the positions of the two fixing plates 2, and the side wall of the baffle 6 is fixedly connected with the corresponding fixing plate 2.

The baffle 6 that the slider 32 both sides set up has not only strengthened the stability of whole clamp and has got the mechanism, still through being connected with mounting panel 1 and fixed plate 2, has improved the direction precision and the structural rigidity in the centre gripping process, has ensured the steady and the accuracy of centre gripping action.

Referring to fig. 2 and 4, when the spline shaft 8 is clamped, the mounting plate 1, the two sliders 32, the two clamping plates 33 and the two baffles 6 enclose a holding chamber 7, and the holding chamber 7 can hold the spline of the spline shaft 8.

The clamping mechanism can clamp the spline shaft 8 without interference, so that the clamping stability is effectively improved, the possibility that the spline shaft 8 is deviated or falls in the clamping process can be reduced, and the safety and reliability of the clamping operation are ensured.

The use principle of the application is that when in use, the mechanical arm drives the clamping mechanism to approach the workpiece, and the first clamping device 3 and the second clamping device 4 are started. The cylinder 31 drives the sliding block 32 to move, the sliding block 32 drives the clamping plates 33 to move, the two clamping plates 33 are close to each other, the two clamping portions 331 are inserted into the clamping grooves 81 on the spline shaft 8, effective clamping of the spline shaft 8 is achieved, and the workpiece can be driven to move.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not limited in scope by the present utility model, so that all equivalent changes according to the structure, shape and principle of the present utility model are covered by the scope of the present utility model.

Claims (9)

1. A workpiece clamping mechanism, comprising:

The mounting plate (1) is connected with the mechanical arm, and both ends of the mounting plate (1) are connected with the fixed plates (2);

A first clamping device (3) and a second clamping device (4), wherein the first clamping device (3) is connected with the fixed plate (2) at the first end of the mounting plate (1), and the second clamping device (4) is connected with the fixed plate (2) at the second end of the mounting plate (1);

The clamping groove (81) is formed in the spline shaft (8), the clamping groove (81) is located below the spline, and the first clamping device (3) and the second clamping device (4) are inserted into the clamping groove (81), so that the workpiece can be clamped through the spline shaft (8).

2. The workpiece clamping mechanism according to claim 1, wherein the first clamping device (3) and the second clamping device (4) have the same structure and comprise an air cylinder (31), clamping plates (33) and connecting pieces (34), the air cylinder (31) is connected with the corresponding fixing plates (2), a driving shaft of the air cylinder (31) penetrates through the fixing plates (2), the clamping plates (33) are arranged between the two fixing plates (2), the clamping plates (33) are connected with the air cylinder (31) through the connecting pieces (34), and one ends, away from the air cylinder (31), of the two clamping plates (33) are inserted into the clamping grooves (81) so as to clamp the spline shaft (8).

3. The workpiece clamping mechanism according to claim 2, wherein the clamping grooves (81) are annularly arranged on the circumferential wall of the spline shaft (8), the end face, far away from the air cylinder (31), of the clamping plate (33) is inwards recessed to form clamping portions (331), the clamping portions (331) are abutted with the clamping grooves (81) of the spline shaft (8), and the radian of the two clamping portions (331) is matched with that of the clamping grooves (81).

4. A workpiece clamping mechanism according to claim 2, wherein the fixed plate (2) is fixedly connected with a guide plate (5), and the guide plate (5) is in sliding abutting connection with the bottom of the clamping plate (33) and is used for guiding the clamping plate (33).

5. A workpiece clamping mechanism according to any one of claims 2-4, wherein the first clamping device (3) and the second clamping device (4) further comprise a sliding block (32), the sliding block (32) is arranged between the clamping plate (33) and the air cylinder (31), the side wall of the sliding block (32) is connected with the air cylinder (31) through a connecting piece (34), the bottom of the sliding block (32) is connected with the clamping plate (33), and one end, away from the air cylinder (31), of the clamping plate (33) protrudes out of the sliding block (32), and the sliding block (32) is in sliding abutting connection with the mounting plate (1).

6. The mechanism as set forth in claim 5, wherein the holding plate (33) has a groove (332), and the slider (32) is inserted into the groove (332).

7. The workpiece clamping mechanism according to claim 5, wherein the sliding block (32) is perpendicular to the direction of the air cylinder (31) for driving the sliding block (32), two sides of the sliding block are respectively provided with a baffle plate (6), the baffle plates (6) are respectively connected with the mounting plate (1) and the fixing plate (2), and the baffle plates (6) are respectively in sliding abutting connection with the sliding block (32) and the clamping plate (33).

8. The workpiece clamping mechanism according to claim 7, wherein a containing chamber (7) is defined among the sliding block (32), the clamping plate (33), the mounting plate (1) and the baffle plate (6), and the containing chamber (7) can contain splines of the spline shaft (8) when the spline shaft (8) is clamped.

9. A workpiece clamping mechanism as set forth in claim 2, wherein said connecting member (34) is a bolt.