High-adaptability workpiece clamping device

Abstract

The utility model discloses a high-adaptability workpiece clamping device which comprises a workpiece mounting plate. The traction shaft is mounted at the limiting hole of the workpiece mounting plate in a lifting manner, a traction plate is fixedly connected to the bottom of the traction shaft, and an elastic part is fixedly connected between the traction plate and the workpiece mounting plate; the rubber sleeve comprises a corrugated buffering section which is rotatably mounted on the workpiece mounting plate and a jacking section which is integrally formed and arranged on the upper side of the corrugated buffering section; the pushing ring plate is fixedly connected to the upper end portion of the traction shaft, the diameter of the pushing ring plate is larger than the hole diameter of the jacking section of the rubber sleeve, and when the pushing ring plate moves downwards to an inner hole of the jacking section, the outer wall of the jacking section expands outwards to abut against the inner hole wall of a corresponding workpiece; and the driving mechanism is used for driving the traction plate to move up and down and driving the traction plate to rotate. According to the utility model, the clamping and rotating stability of the workpiece can be ensured, and the outer surface of the workpiece cannot be shielded.

Description

Technical Field

[0001] The utility model relates to a highly adaptable workpiece clamping device, which can form a top-tight clamping on the workpiece in the inner hole of the workpiece and drive the workpiece to rotate. Background Art

[0002] Some workpieces (such as auto parts) have extremely high requirements for the outer surface, especially transmission parts (such as pulleys), whose assembly surfaces are not allowed to have surface defects. The traditional workpiece surface defect inspection process is mainly through manual identification, which not only has low detection efficiency, but also has the problem of inadequate detection.

[0003] In order to effectively improve the inspection efficiency of workpiece surfaces, automated visual inspection systems have begun to be used in workpiece surface defect inspection. The workpiece is rotatably clamped through the corresponding workpiece rotation transmission device, and the image acquisition camera is used to capture the appearance image of each part of the workpiece during the rotation process. The captured appearance image is sent to the corresponding control system and compared with the qualified sample images stored in the control system, so as to quickly determine whether the surface of the workpiece meets the design requirements, thereby effectively and significantly improving the inspection efficiency and inspection accuracy of the workpiece surface.

[0004] The workpiece clamping device equipped with the existing appearance image acquisition equipment mainly includes: a clamp driven by a driving motor, which clamps the workpiece through the clamp, and then drives the clamp and the workpiece to rotate through the driving motor, so as to collect appearance images of various parts of the workpiece. Since the clamp will block the surface of the workpiece when clamping the workpiece, when the blocked part of the workpiece happens to have a surface defect, the surface defect cannot be detected normally, resulting in a blind spot in the detection of surface defects of the workpiece, which is very troublesome.

[0005] Therefore, the research purpose of the present invention is to design a highly adaptable workpiece clamping device that can ensure the clamping and rotation stability of the workpiece and will not block the outer surface of the workpiece to ensure the comprehensiveness of image acquisition. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the utility model provides a workpiece clamping device with high adaptability, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the utility model is:

[0008] A highly adaptable workpiece clamping device, comprising

[0009] A workpiece mounting plate, wherein corresponding limiting holes are arranged on the workpiece mounting plate;

[0010] A pulling shaft can be lifted and installed at the limiting hole of the workpiece mounting plate, the bottom of the pulling shaft extends to the lower side of the workpiece mounting plate and is fixedly connected to a corresponding pulling plate, and at least one corresponding elastic member is fixedly connected between the pulling plate and the workpiece mounting plate;

[0011] A rubber sleeve is arranged on the upper side of the limiting hole, the rubber sleeve comprises a corrugated buffer section rotatably mounted on the workpiece mounting plate, and a tightening section integrally formed and arranged on the upper side of the corrugated buffer section, the tightening section is arranged in a tubular shape;

[0012] A push ring plate, the upper end of the pulling shaft extends to the upper side of the rubber sleeve, the push ring plate is fixedly connected to the upper end of the pulling shaft, the diameter of the push ring plate is larger than the aperture of the top tightening section of the rubber sleeve, when the push ring plate moves downward to the inner hole of the top tightening section, the outer wall of the top tightening section expands outward to be pressed against the inner hole wall of the corresponding workpiece;

[0013] The driving mechanism is used to drive the pulling plate to move up and down and to drive the pulling plate to rotate.

[0014] The pulling plate is an iron pulling plate.

[0015] The driving mechanism comprises a driving motor and a driving plate fixedly connected to the output shaft end of the driving motor, and an electromagnet matched with the pulling plate is fixedly connected to the driving plate.

[0016] The elastic member is a coil spring, which is fixedly sleeved on the periphery of the pulling shaft, and the upper and lower ends of the coil spring are respectively fixed to the workpiece mounting plate and the pulling plate.

[0017] The top of the tightening section of the rubber sleeve is in an inclined plane shape and is provided with a corresponding inclined plane chamfer.

[0018] The workpiece mounting plates outside the limiting holes are respectively integrally formed with corresponding mounting convex edges upwardly arranged, and the bottom of the corrugated buffer section of the rubber sleeve is rotatably mounted on the mounting convex edges through corresponding mounting bearings.

[0019] Advantages of the utility model:

[0020] 1) In the process of clamping the workpiece, the utility model installs the workpiece sleeve with the mounting hole on the rubber sleeve manually or by loading with a robot, for example, the shaft mounting hole of the pulley is installed on the rubber sleeve, and the pulling plate and the pulling shaft are driven by the driving mechanism to move downward, so that the push ring plate moves downward to the inner hole of the tightening section, and then the outer wall of the tightening section expands outward to tighten against the inner hole wall of the corresponding workpiece; then, the pulling plate and the pulling shaft are driven by the driving mechanism to rotate, so that the workpiece can be driven in rotation, which can ensure the clamping and rotation stability of the workpiece and will not block the outer surface of the workpiece, so as to ensure the comprehensiveness of image acquisition.

[0021] 2) The rubber sleeve of the utility model includes a corrugated buffer section and a tightening section. During the embedding process of the push ring plate, the corrugated buffer section of the rubber sleeve is compressed; during the resetting process of the push ring plate, under the elastic force of the elastic member, the pulling plate and the pulling shaft are pushed upward, and the corrugated buffer of the rubber sleeve is stretched until the push ring plate leaves the tightening section of the rubber sleeve, thereby enabling the overall technical solution of the utility model to be implemented to ensure the practical effect of the utility model.

[0022] 3) The driving mechanism of the utility model includes a driving motor and a driving plate fixed to the output shaft end of the driving motor, and an electromagnet matched with the pulling plate is fixed to the driving plate. When the electromagnet is energized, it can form a downward adsorption force on the pulling plate, that is, pull the pulling shaft downward; and under the drive of the driving motor, the pulling plate and the pulling shaft are driven to rotate, thereby achieving a stable clamping of the workpiece and a rotation drive, so as to ensure the practical effect of the utility model.

[0023] 4) The top of the tightening section of the rubber sleeve of the utility model is in an inclined shape and is provided with a corresponding inclined chamfer, so that the push ring plate can be smoothly embedded in the tightening section of the rubber sleeve, thereby further ensuring the practical effect of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is the assembly diagram of rubber sleeve and push ring plate.

[0026] Figure 3 This is a diagram showing the usage status of the tightening section of the push ring plate embedded in the rubber sleeve.

[0027] In the accompanying drawings: workpiece mounting plate 1, limiting hole 101, pulling shaft 2, pulling plate 3, elastic member 4, rubber sleeve 5, corrugated buffer section 501, tightening section 502, push ring plate 6, driving mechanism 7, driving motor 701, driving plate 702, electromagnet 703, mounting flange 8, mounting bearing 9. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0029] refer to Figure 1-3 , a highly adaptable workpiece clamping device, comprising

[0030] A workpiece mounting plate 1, wherein the workpiece mounting plate 1 is provided with corresponding limiting holes 101;

[0031] The pulling shaft 2 can be lifted and installed at the limiting hole 101 of the workpiece mounting plate 1. The bottom of the pulling shaft 2 extends to the lower side of the workpiece mounting plate 1 and is fixedly connected to a corresponding pulling plate 3. At least one corresponding elastic member 4 is fixedly connected between the pulling plate 3 and the workpiece mounting plate 1.

[0032] The rubber sleeve 5 is arranged on the upper side of the limiting hole 101, and the rubber sleeve 5 comprises a corrugated buffer section 501 rotatably mounted on the workpiece mounting plate 1, and a tightening section 502 integrally formed and arranged on the upper side of the corrugated buffer section 501, and the tightening section 502 is arranged in a tubular shape;

[0033] A push ring plate 6, the upper end of the pulling shaft 2 extends to the upper side of the rubber sleeve 5, the push ring plate 6 is fixed to the upper end of the pulling shaft 2, the diameter of the push ring plate 6 is larger than the aperture of the top tightening section 502 of the rubber sleeve 5, when the push ring plate 6 moves downward to the inner hole of the top tightening section 502, the outer wall of the top tightening section 502 expands outward to be pressed against the inner hole wall of the corresponding workpiece;

[0034] The driving mechanism 7 is used to drive the pulling plate 3 to move up and down, and to drive the pulling plate 3 to rotate.

[0035] During the clamping process, the workpiece with the mounting hole is installed on the rubber sleeve 5 manually or by robot loading. For example, the shaft mounting hole of the pulley is installed on the rubber sleeve 5. Driven by the driving mechanism 7, the pulling plate 3 and the pulling shaft 2 move downward, so that the push ring plate 6 moves downward to the inner hole of the tightening section 502, and then the outer wall of the tightening section 502 expands outward to be tightened on the inner hole wall of the corresponding workpiece; then, driven by the driving mechanism 7, the pulling plate 4 and the pulling shaft 2 are driven to rotate, so that the workpiece can be driven in rotation, which can ensure the clamping and rotation stability of the workpiece and will not block the outer surface of the workpiece, so as to ensure the comprehensiveness of image acquisition.

[0036] During the embedding process of the push ring plate 6, the corrugated buffer section 501 of the rubber sleeve 5 is compressed; during the resetting process of the push ring plate 6, under the elastic force of the elastic member 4, the pulling plate 3 and the pulling shaft 2 are pushed upward, and the corrugated buffer section 501 of the rubber sleeve 5 is stretched until the push ring plate 6 leaves the tightening section 502 of the rubber sleeve 5, thereby enabling the overall technical solution of the present invention to be implemented to ensure the practical effect of the present invention.

[0037] The pulling plate 3 is an iron pulling plate, and the driving mechanism 7 includes a driving motor 701 and a driving plate 702 fixedly connected to the output shaft end of the driving motor 701 . An electromagnet 703 adapted to the pulling plate 3 is fixedly connected to the driving plate 702 .

[0038] By energizing the electromagnet 703, a downward adsorption force can be formed on the pulling plate 3, that is, the pulling shaft 2 is pulled downward; and under the drive of the driving motor 701, the pulling plate 3 and the pulling shaft 2 are driven to rotate, thereby achieving stable clamping of the workpiece and rotational drive to ensure the practical effect of the utility model.

[0039] The elastic member 4 is a coil spring, which is fixedly sleeved on the periphery of the pulling shaft 2 , and the upper and lower ends of the coil spring are fixedly connected to the workpiece mounting plate 1 and the pulling plate 3 , respectively.

[0040] The top of the tightening section 502 of the rubber sleeve 5 is in an inclined plane shape and is provided with a corresponding inclined chamfer, so that the push ring plate 6 can be smoothly embedded in the tightening section 502 of the rubber sleeve 5, thereby further ensuring the practical effect of the utility model.

[0041] The workpiece mounting plate 1 outside the limiting hole 101 is respectively integrally formed with corresponding mounting protrusions 8 upwardly arranged, and the bottom of the corrugated buffer section 501 of the rubber sleeve 5 is rotatably mounted on the mounting protrusions 8 through corresponding mounting bearings 9 .

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A highly adaptable workpiece clamping device, characterized in that: include A workpiece mounting plate (1), wherein the workpiece mounting plate (1) is provided with corresponding limiting holes (101); A pulling shaft (2) is installed in a lifting manner at a limiting hole (101) of the workpiece mounting plate (1), the bottom of the pulling shaft (2) extends to the lower side of the workpiece mounting plate (1) and is fixedly connected to a corresponding pulling plate (3), and at least one corresponding elastic member (4) is fixedly connected between the pulling plate (3) and the workpiece mounting plate (1); A rubber sleeve (5) is arranged on the upper side of the limiting hole (101), the rubber sleeve (5) comprising a corrugated buffer section (501) rotatably mounted on the workpiece mounting plate (1), and a tightening section (502) integrally formed and arranged on the upper side of the corrugated buffer section (501), the tightening section (502) being arranged in a tubular shape; A push ring plate (6), the upper end of the pulling shaft (2) extends to the upper side of the rubber sleeve (5), the push ring plate (6) is fixed to the upper end of the pulling shaft (2), the diameter of the push ring plate (6) is larger than the hole diameter of the tightening section (502) of the rubber sleeve (5), when the push ring plate (6) moves downward to the inner hole of the tightening section (502), the outer wall of the tightening section (502) expands outward to be tightened on the inner hole wall of the corresponding workpiece; The driving mechanism (7) is used to drive the pulling plate (3) to move up and down, and to drive the pulling plate (3) to rotate.

2. A highly adaptable workpiece clamping device according to claim 1, characterized in that: The pulling plate (3) is an iron pulling plate.

3. A highly adaptable workpiece clamping device according to claim 2, characterized in that: The driving mechanism (7) comprises a driving motor (701) and a driving plate (702) fixedly connected to the output shaft end of the driving motor (701); an electromagnet (703) adapted to the pulling plate (3) is fixedly connected to the driving plate (702).

4. A highly adaptable workpiece clamping device according to claim 1, characterized in that: The elastic member (4) is a coil spring, which is fixedly sleeved on the periphery of the pulling shaft (2), and the upper and lower ends of the coil spring are respectively fixedly connected to the workpiece mounting plate (1) and the pulling plate (3).

5. The highly adaptable workpiece clamping device according to claim 1, characterized in that: The top of the tightening section (502) of the rubber sleeve (5) is in the shape of an inclined surface and is provided with a corresponding inclined chamfer.

6. A highly adaptable workpiece clamping device according to claim 1, characterized in that: The workpiece mounting plate (1) outside the limiting hole (101) is integrally formed with corresponding mounting protrusions (8) arranged upward, and the bottom of the corrugated buffer section (501) of the rubber sleeve (5) is rotatably mounted on the mounting protrusions (8) via corresponding mounting bearings (9).

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