Spraying clamp suitable for bearing bushes of multiple dimensions

Abstract

The utility model discloses a spraying clamp suitable for bearing bushes of multiple sizes and specifications, which belongs to the technical field of bearing bush production and comprises a rotating base and a chuck, the chuck is mounted on the upper end face of the rotating base, three adjustable clamping jaws are mounted on the chuck, each adjustable clamping jaw comprises a middle block and two lengthening blocks, and the middle blocks and the lengthening blocks are connected through bolts. The lower end of the middle block is installed on the chuck, the two lengthening blocks are hinged to the two sides of the middle block respectively, a pressure spring is installed between the middle block and the lengthening blocks, and the pressure spring is located on the face, away from a bearing bush, of the middle block and the faces, away from the bearing bush, of the lengthening blocks. An extension block is detachably installed on the face, close to the bearing bush, of the middle block, one face of the extension block is connected with the middle block, the other face of the extension block is provided with an arc-shaped face attached to the bearing bush, and the bearing bush clamping device can clamp bearing bushes of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of bearing production technology, specifically to a bearing spraying fixture suitable for multiple sizes. Background Technology

[0002] Bearing shells are sliding bearings that bear the load of the transmission shaft and come into contact with the shaft diameter. They are shaped like a tile-like semi-cylindrical surface. Currently, bearing shell fixture operations mainly involve processes such as sorting, clamping, spraying, drying, polishing, and sintering bearing shells to make the finished product surface smooth and wear-resistant.

[0003] When the bearing is sprayed, two bearings are usually arranged into a cylindrical shape and stacked in multiple layers. They are then clamped and fixed by a three-jaw extended chuck. After clamping, a rotating device drives the entire fixture to rotate, and then an inner hole spraying device extends into the interior to spray the inner wall of the bearing.

[0004] Because bearing shells have a wide range of applications, they come in various sizes and specifications. However, existing bearing shell clamps on the market are not universally applicable. The bearing shell diameter range that the clamps can clamp is usually small. When producing bearing shells with small diameters, the three jaws of the clamp are too close together and will interfere with each other, making it impossible to clamp the bearing shell.

[0005] When the bearing bush is large, the clamp and the outer surface of the bearing bush will become in line contact. When the clamp rotates and drives the bearing bush to rotate for spraying, slippage may occur, resulting in uneven coating and affecting product quality.

[0006] To address the problems existing in the prior art, this utility model designs and manufactures a bearing spraying fixture suitable for multiple sizes and specifications, thereby overcoming the aforementioned defects. Utility Model Content

[0007] In response to the problems existing in the prior art, this utility model provides a bearing spraying fixture suitable for multiple sizes, which can clamp bearings of different sizes.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bearing spraying fixture suitable for multiple sizes and specifications, comprising a rotating base and a chuck, wherein the chuck is mounted on the upper surface of the rotating base and three adjustable jaws are mounted on the chuck;

[0009] The adjustable chuck includes a middle block and two extension blocks. The lower end of the middle block is mounted on the chuck, and the two extension blocks are respectively hinged to both sides of the middle block. A compression spring is installed between the middle block and the extension blocks, and the compression spring is located on the side of the middle block and the extension blocks away from the bearing.

[0010] An extension block is detachably mounted on one side of the intermediate block near the bearing bush. One side of the extension block is connected to the intermediate block, and the other side of the extension block has an arc-shaped surface that fits into the bearing bush.

[0011] Preferably, a support frame is installed on the side of the intermediate block away from the bearing bush, and the lower end face of the support frame slides in cooperation with the chuck.

[0012] Preferably, the side of the intermediate block closest to the bearing shell is a concave arc surface.

[0013] Preferably, the side of the extension block closest to the middle block is a contoured surface that can mate with the concave arc surface.

[0014] Preferably, the concave arc surface is provided with a dovetail groove, and the contoured surface is provided with a dovetail tenon. The dovetail tenon and the dovetail groove cooperate to allow the extension block to be detachably installed on the intermediate block.

[0015] Preferably, the extension block, the intermediate block, and the elongated block are all provided with an anti-slip layer on the side near the bearing.

[0016] Preferably, the rotating base includes a motor and a turntable, with the lower end face of the turntable connected to the motor and the upper end face of the turntable connected to the chuck.

[0017] Preferably, the chuck is detachably mounted on the turntable.

[0018] Preferably, the chuck is a hydraulic chuck.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model has extended blocks hinged to both sides of the middle block and a compression spring connected between them. Under the compression of the bearing, the extended blocks rotate towards the middle block, and the compression spring generates a reaction force, so that the extended blocks are tightly attached to the bearing, increasing the contact area with the bearing and enabling the clamping of bearings with larger dimensions.

[0021] 2. This utility model has a detachable extension block installed on the middle block. The extension block itself has a certain thickness, which can extend the distance between the adjustable jaws and the bearing shell. This ensures that the three adjustable jaws will not get too close to each other and interfere when clamping small-diameter bearing shells. It also makes it convenient to replace or disassemble the bearing shells at any time according to their size, so as to clamp bearing shells of different sizes.

[0022] 3. This utility model installs a chuck on a rotating base, and the motor can drive the turntable to rotate, thereby causing the bearing bush clamped by the three adjustable jaws on the chuck to rotate at a uniform speed, ensuring the uniformity of the bearing bush coating and improving production quality. Attached Figure Description

[0023] Figure 1 This is a top view of a bearing spraying fixture applicable to multiple sizes according to this utility model;

[0024] Figure 2 This is a side view of a bearing spraying fixture applicable to multiple sizes according to this utility model;

[0025] Figure 3 This is a diagram showing the state of a bearing spraying fixture applicable to multiple sizes of bearings when clamping a large-sized bearing.

[0026] Figure 4 This is a side view of an adjustable jaw for a bearing spraying fixture applicable to multiple sizes, according to the present invention.

[0027] In the diagram: 1-turntable, 2-support frame, 3-intermediate block, 4-extended block, 5-compression spring, 6-chuck, 7-motor, 8-dovetail groove, 9-extension block, 10-arc surface, 11-dovetail tenon, 12-concave arc surface, 13-contour surface, 14-bearing bush. Detailed Implementation

[0028] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1-4 The present invention relates to a bearing spraying fixture suitable for multiple sizes, comprising a rotating base and a chuck 6. The chuck 6 is mounted on the upper surface of the rotating base. The rotating base includes a motor 7 and a turntable 1. The lower surface of the turntable 1 is connected to the motor 7, and the upper surface of the turntable 1 is connected to the chuck 6. The motor 7 can drive the turntable 1 to rotate, thereby causing the bearing 14 clamped by the chuck 6 to rotate, ensuring the uniformity of the spraying of the bearing 14.

[0030] Specifically, chuck 6 is a hydraulic chuck, which can be connected to a hydraulic line to control its clamping or releasing. Chuck 6 is detachably mounted on turntable 1 for easy maintenance and replacement.

[0031] The chuck 6 of this utility model is equipped with three adjustable jaws, which can clamp bearings 14 of different sizes and specifications. The adjustable jaws include a middle block 3 and two extension blocks 4. The lower end of the middle block 3 is mounted on the chuck 6. The chuck 6 can move the three middle blocks 3 closer or further away at the same time, thereby clamping or releasing the bearing 14.

[0032] A support frame 2 is installed on the side of the intermediate block 3 away from the bearing shell 14. The lower end face of the support frame 2 slides in cooperation with the chuck 6. The support frame 2 can provide support when the intermediate block 3 clamps the bearing shell 14, preventing the intermediate block 3 from shaking and ensuring the connection strength between the intermediate block 3 and the chuck 6. This allows the intermediate block 3 to clamp the bearing shell 14 more effectively and avoids slippage caused by shaking.

[0033] In this utility model, two extension blocks 4 are respectively hinged to both sides of the middle block 3. A compression spring 5 is installed between the middle block 3 and the extension blocks 4. The compression spring 5 is located on the side of the middle block 3 and the extension blocks 4 away from the bearing shell 14. The connection position between the hinge and the compression spring 5 is near the bearing shell 14 and away from the bearing shell 14, respectively. The extension blocks 4 can rotate along the hinge. Under the action of the compression spring 5, the two extension blocks 4 can automatically adjust their angle and always abut against the bearing shell 14.

[0034] Specifically, when encountering a bearing bush 14 with a larger diameter, the two extension blocks 4 rotate towards the middle block 3 under the pressure of the outer wall of the bearing bush 14, thereby pressing the compression spring 5. The reaction force generated by the compression of the compression spring 5 will cause the extension blocks 4 to stick tightly to the bearing bush 14, increasing the contact area with the bearing bush 14 and preventing slippage.

[0035] Specifically, the side of the middle block 3 closest to the bearing shell 14 is a concave arc surface 12, which can better fit the bearing shell 14. An extension block 9 is detachably installed on the side of the middle block 3 closest to the bearing shell 14. The side of the extension block 9 closest to the middle block 3 is a contoured surface 13 that can cooperate with the concave arc surface 12. After installation, it can increase the contact area with the middle block 3 and prevent shaking.

[0036] The concave arc surface 12 of this utility model is provided with a dovetail groove 8, and the contour surface 13 is provided with a dovetail tenon 11. The dovetail tenon 11 and the dovetail groove 8 cooperate to allow the extension block 9 to be detachably installed on the middle block 3, so that different extension blocks 9 can be selected for insertion according to the size of the bearing 14 to be sprayed.

[0037] Specifically, since the extension block 9 is installed on the side of the middle block 3 near the bearing shell 14 and has a certain thickness, it can extend the distance between the adjustable claws and the bearing shell 14, so that the three adjustable claws will not get too close to each other and interfere when clamping the small-diameter bearing shell 14.

[0038] Specifically, one side of the extension block 9 is connected to the middle block 3, and the other side of the extension block 9 is provided with an arc-shaped surface 10 that fits with the bearing bush 14, which can better fit with the bearing bush 14 and increase the contact area.

[0039] The extension block 9, the middle block 3, and the elongated block 4 of this utility model are all provided with an anti-slip layer on the side near the bearing 14, which increases the friction with the bearing 14 and prevents slippage.

[0040] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A bush spray jig suitable for use with multiple size specifications, characterised in that, It comprises a rotating base and a chuck (6), the chuck (6) is installed on the upper end face of the rotating base, three adjustable clamping jaws are installed on the chuck (6); The adjustable clamping jaws comprise a middle block (3) and two extension blocks (4), the lower end of the middle block (3) is installed on the chuck (6), the two extension blocks (4) are respectively hinged on the two sides of the middle block (3), a compression spring (5) is installed between the middle block (3) and the extension block (4), and the compression spring (5) is located on the side of the middle block (3) and the extension block (4) away from the bearing (14); The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

2. A bush spray jig suitable for use with multiple size bushes according to claim 1, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

3. A bush spray jig suitable for use with multiple size bushes according to claim 1, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

4. The bushing spray fixture of claim 3, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

5. A bush spray jig suitable for use with multiple size bushes according to claim 4, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

6. A bush spray jig suitable for use with multiple size bushes according to claim 1, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

7. A bush spray fixture suitable for use with multiple size bushes according to claim 1, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

8. A bush spray jig suitable for use with multiple size bushes according to claim 7, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14).

9. A bush spray fixture suitable for use with multiple size bushes according to claim 1, wherein, The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against the bearing (14). The middle block (3) is detachably installed with an extension block (9) on the side close to the bearing (14), one side of the extension block (9) is connected with the middle block (3), and the other side of the extension block (9) is provided with an arc surface (10) abutting against

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