Flexible grinding clamp for high-precision special-shaped mechanical parts

Abstract

The utility model belongs to the technical field of part clamps, and particularly relates to a flexible grinding clamp for high-precision special-shaped mechanical parts, which comprises a machining table, a square frame is arranged on the upper side of the machining table, a first clamping piece and a second clamping piece are arranged on the left side and the right side of the interior of the square frame respectively, and a rotating rod is fixedly connected to the right side face of the square frame. The rotating rod is rotationally connected with a supporting plate and connected with a rotating mechanism, and an air cylinder clamping mechanism is arranged on the left side of the square frame and fixedly connected with the first clamping piece. After a part is clamped, when the polishing position needs to be changed, the square frame can be driven to rotate by rotating the rocking handle, so that the part is driven to rotate, and the polishing position is changed under the condition that the part is not clamped again.

Description

Technical Field

[0001] This utility model belongs to the field of parts clamping technology, specifically relating to a flexible grinding clamp for high-precision irregularly shaped mechanical parts. Background Technology

[0002] Flexible fixtures are fixtures that can be quickly adjusted or reconfigured to adapt to the clamping needs of workpieces of different shapes, sizes and types. They can automatically adapt to changes in workpieces within a certain range, requiring little or no manual adjustment, thus improving production flexibility and efficiency.

[0003] When grinding mechanical parts, multiple parts of the part need to be ground. However, irregularly shaped mechanical parts cannot be installed in the fixture of a rotating body. In the prior art, when multiple surfaces of an irregularly shaped mechanical part need to be ground, after grinding one surface of the mechanical part, the part needs to be re-clamped in order to grind the other surfaces of the irregularly shaped part. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a flexible grinding fixture for high-precision irregularly shaped mechanical parts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A flexible grinding fixture for high-precision irregularly shaped mechanical parts includes a processing table, a square frame on the upper side of the processing table, a first clamping member and a second clamping member respectively arranged on the left and right sides inside the square frame, a rotating rod fixedly connected to the right side of the square frame, a support plate rotatably connected to the rotating rod, a rotating mechanism connected to the rotating rod, and a cylinder clamping mechanism arranged on the left side of the square frame, the cylinder clamping mechanism being fixedly connected to the first clamping member;

[0007] The cylinder clamping mechanism includes a cylinder barrel with two air chambers inside. An elastic element is provided in the middle of the two air chambers. The side of the elastic element is slidably sealed to the side of the cylinder barrel. The two air chambers of the cylinder barrel are connected to air pipes.

[0008] Further specifying, the rotating mechanism includes a driven wheel that is driven by a rotating rod, the driven wheel being meshed with a driving wheel, a crank fixedly connected to the outer side of the driving wheel, the driven wheel and the driving wheel being assembled and connected to a support plate, the driving wheel being larger in size than the driven wheel, and the driving wheel being rotatably connected to the support plate.

[0009] Furthermore, a damping ring is assembled and connected between the inner ring of the drive wheel and the rotation shaft of the drive wheel.

[0010] Further specifying, the first clamping member includes a clamping plate, a push rod is fixedly connected to one side of the clamping plate, and the other end of the push rod is assembled and connected to an elastic member.

[0011] Further specifying, the second clamping member includes a mounting plate fixedly connected to the left side of the square frame, with screws threaded to both sides of the mounting plate, and a positioning plate fixedly connected to one end of each screw. A distance is left between the two positioning plates to prevent interference between them.

[0012] Further specifying, the elastic element includes two sealing plates, which are slidably and sealingly connected to the cylinder barrel, and a spring is assembled and connected between the two sealing plates. The sealing plate on the right side is connected to the push rod.

[0013] Further specifying, a third clamping member is provided on the upper right side of the square frame, the third clamping member includes a third clamping plate, and the square frame is threadedly connected to a screw that is threadedly connected to the third clamping plate.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] This invention controls the movement distance of the first clamping member through a cylinder clamping mechanism, thereby changing the distance between the first clamping member and the second clamping member according to the size of the part. After the first clamping member clamps the part, air can be introduced into the air chamber on the left side to increase the elastic force on the elastic member, thereby controlling the clamping force on the part.

[0016] After clamping the part, if it is necessary to change the grinding position, the square frame can be rotated by turning the crank handle, thereby causing the part to rotate, so as to change the grinding position without re-clamping the part. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the structure of a flexible grinding fixture for high-precision irregularly shaped mechanical parts according to the present invention;

[0019] Figure 2 This is a front view of a flexible grinding fixture for high-precision irregularly shaped mechanical parts according to the present invention.

[0020] Figure 3 This is a schematic diagram of the square frame of this utility model in a rotating state;

[0021] Figure 4 This is a cross-sectional view of the cylinder clamping mechanism of this utility model;

[0022] The symbols for the main components are explained below:

[0023] 1. Machining table; 2. Square frame; 21. Rotating rod; 22. Third clamping component; 221. Third clamping plate; 222. Screws;

[0024] First clamping component 31, clamping plate 311, push rod 312, second clamping component 32, mounting plate 321, screw 322, positioning plate 323;

[0025] Support plate 4;

[0026] Rotating mechanism 5, driven wheel 51, driving wheel 52, crank handle 53, damping ring 54;

[0027] Cylinder clamping mechanism 6, cylinder barrel 61, elastic element 62, sealing plate 621, spring 622, air pipe 63. Detailed Implementation

[0028] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-4 As shown, a flexible grinding fixture for high-precision irregularly shaped mechanical parts includes a processing table 1, a square frame 2 on the upper side of the processing table 1, a first clamping member 31 and a second clamping member 32 respectively on the left and right sides of the inside of the square frame 2, a rotating rod 21 fixedly connected to the right side of the square frame 2, a support plate 4 rotatably connected to the rotating rod 21, a rotating mechanism 5 connected to the rotating rod 21, and a cylinder clamping mechanism 6 fixedly connected to the left side of the square frame 2.

[0030] The cylinder clamping mechanism 6 includes a cylinder barrel 61, which has two air chambers inside. An elastic element 62 is provided in the middle of the two air chambers. The side of the elastic element 62 is slidably sealed to the side of the cylinder barrel 61. The two air chambers of the cylinder barrel 61 are connected by an air pipe 63.

[0031] In this embodiment, the part is located within a square frame 2. The first clamping member 31 and the second clamping member 32 clamp the part. A rotating rod 21 connects to a rotating mechanism 5, which rotates the square frame 2. The square frame 2 drives the first clamping member 31 and the second clamping member 32 to rotate, thereby rotating the part. After the part rotates to a certain angle, the rotating mechanism 5 can fix the square frame 2. A support plate 14 is used to mount the rotating mechanism 5. A cylinder clamping mechanism 6 is used to move the first clamping member 31, allowing it to move so that the second clamping member 32 simultaneously clamps the irregularly shaped part. The two clamping members 31 and 32 are controlled by an air pipe 63. Air is introduced into the two air chambers, causing a change in their volume. By controlling the movement of the elastic element 62 and the first clamping element 31 to the right through the air inlet and outlet in the left air chamber, the distance between the first clamping element 31 and the second clamping element 32 is reduced during inflation. When air is introduced into the right air chamber, the elastic element 62 and the first clamping element 31 move to the left. When the pressure in the two air chambers is the same, the first clamping element 31 clamps the part. Relying on the elastic force of the elastic element 62, when the clamping force on the part exceeds the deformation force of the elastic element 62, the elastic element 62 deforms, thereby preventing the first clamping element 31 and the second clamping element 32 from squeezing and deforming the part.

[0032] Reference Figure 1 The rotating mechanism 5 includes a driven wheel 51 that is connected to the rotating rod 21. The driven wheel 51 is meshed with a driving wheel 52. A rocker arm 53 is fixedly connected to the outside of the driving wheel 52. The driven wheel 51 and the driving wheel 52 are assembled and connected to the support plate 4. The size of the driving wheel 52 is larger than that of the driven wheel 51. The driving wheel 52 is rotatably connected to the support plate 4. In this embodiment, the rotating mechanism 5 is used to drive the square frame 2 to rotate via the crank 53. The driven wheel 51 is rotatably connected to the square frame 2, so the driven wheel 51 can be driven to rotate by rotating the driving wheel 52. The size of the driven wheel 51 is smaller than that of the driving wheel 52. Therefore, if the driven wheel 51 is to rotate, a force greater than that required for the driven wheel 51 to rotate is needed. There is friction between the driven wheel 51 and the support plate 4, which has a self-locking property. Thus, the square frame 2 will not rotate when the external force is small. At the same time, there is a large friction between the driving wheel 52 and the connecting shaft of the driving wheel 52, which requires a large external force to rotate. The power transmission between the driving wheel 51 and the driven wheel 51 is equivalent to a lever with a large effort. The driven wheel 52 can drive the driven wheel 51 to rotate with a small force, and vice versa. At the same time, when the grinding of the mechanical parts exceeds the limit, the mechanical parts will overcome the resistance and drive the square frame 2 to rotate.

[0033] Reference Figure 1 A damping ring 54 is assembled and connected between the inner ring of the drive wheel 52 and the rotation shaft of the drive wheel 52. In this embodiment, the damping ring 54 is used to increase the friction between the drive wheel 52 and the rotation shaft of the drive wheel 52, and the rotation shaft is fixedly connected to the support plate.

[0034] Reference Figure 4 The first clamping member 31 includes a clamping plate 311, a push rod 312 fixedly connected to one side of the clamping plate 311, and the other end of the push rod 312 assembled and connected to the elastic member 62. In this embodiment, the first clamping member 31 is controlled to move by the cylinder 61. At the same time, when the elastic member 62 moves, the clamping plate 311 moves with the elastic member 62. When the right air chamber is ventilated, the pressure inside the chamber increases, squeezing the elastic member 62.

[0035] Reference Figure 3 The second clamping member 32 includes a mounting plate 321 fixedly connected to the left side of the square frame 2. Both sides of the mounting plate 321 are threaded with screws 322, and one end of each screw 322 is fixedly connected to a positioning plate 323. A distance is maintained between the two positioning plates 323 to prevent interference. In this embodiment, positioning plates 323 are provided on both sides of the mounting plate 321 for multi-directional clamping of the part, thereby ensuring stable clamping. The distance between the positioning plates 323 and the mounting plate 321 is changed by rotating the screws 322. The positioning plates 323 can be circular, square, or other shapes. The distance between the two positioning plates 323 ensures that they do not interfere with each other during rotation.

[0036] Reference Figure 4 The elastic element 62 includes two sealing plates 621, which are slidably and sealingly connected to the cylinder 61. A spring 622 is assembled and connected between the two sealing plates 621, and the right sealing plate 621 is connected to the push rod 312. In this embodiment, the sealing plates 621 are used to separate the two air chambers of the cylinder 61, so that the gas in the two air chambers is not interconnected. When the two sealing plates 621 are subjected to pressure, they compress the spring 622, causing the spring 622 to undergo elastic deformation.

[0037] Reference Figure 1-2 A third clamping member 22 is provided on the upper right side of the square frame 2. The third clamping member 22 includes a third clamping plate 221, and the square frame 2 is threadedly connected to a screw 222 that is threadedly connected to the third clamping plate 221. In this embodiment, the third clamping member 22 is used to fix the parts from multiple positions. The distance between the third clamping plate 221 and the square frame 2 can be adjusted by rotating the screw 222, thereby adapting to the clamping of different parts.

[0038] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A flexible grinding fixture for high-precision irregularly shaped mechanical parts, comprising a processing table (1), characterized in that: A square frame (2) is provided on the upper side of the processing table (1). A first clamping member (31) and a second clamping member (32) are respectively provided on the left and right sides inside the square frame (2). A rotating rod (21) is fixedly connected to the right side of the square frame (2). A support plate (4) is rotatably connected to the rotating rod (21). A rotating mechanism (5) is connected to the rotating rod (21). A cylinder clamping mechanism (6) is provided on the left side of the square frame (2). The cylinder clamping mechanism (6) is fixedly connected to the first clamping member (31). The cylinder clamping mechanism (6) includes a cylinder barrel (61), which has two air chambers inside. An elastic element (62) is provided in the middle of the two air chambers. The side of the elastic element (62) is slidably sealed to the side of the cylinder barrel (61). Both air chambers of the cylinder barrel (61) are connected to air pipes (63).

2. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 1, characterized in that: The rotating mechanism (5) includes a driven wheel (51) that is connected to the rotating rod (21) for transmission. The driven wheel (51) is connected to the driving wheel (52) for transmission. A crank (53) is fixedly connected to the outside of the driving wheel (52). The driven wheel (51) and the driving wheel (52) are assembled and connected to the support plate (4). The size of the driving wheel (52) is larger than that of the driven wheel (51). The driving wheel (52) is rotatably connected to the support plate (4).

3. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 2, characterized in that: A damping ring (54) is assembled and connected between the inner ring of the drive wheel (52) and the rotation shaft of the drive wheel (52).

4. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 3, characterized in that: The first clamping member (31) includes a clamping plate (311), a push rod (312) is fixedly connected to one side of the clamping plate (311), and the other end of the push rod (312) is assembled and connected to the elastic member (62).

5. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 3, characterized in that: The second clamping member (32) includes a mounting plate (321) fixedly connected to the left side of the square frame (2). Both sides of the mounting plate (321) are threaded with screws (322). One end of the screws (322) is fixedly connected to a positioning plate (323). A distance is left between the two positioning plates (323) to prevent interference between the positioning plates (323).

6. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 4, characterized in that: The elastic element (62) includes two sealing plates (621), which are slidably and sealingly connected to the cylinder (61). A spring (622) is assembled and connected between the two sealing plates (621), and the sealing plate (621) on the right side is connected to the push rod (312).

7. The flexible grinding fixture for high-precision irregularly shaped mechanical parts according to claim 3, characterized in that: A third clamping member (22) is provided on the upper right side of the square frame (2). The third clamping member (22) includes a third clamping plate (221). The square frame (2) is threaded with a screw (222) that is threaded to the third clamping plate (221).

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