Clamp for machining cylinder block

Abstract

The utility model relates to the technical field of air cylinder body clamps, in particular to a clamp for machining an air cylinder body, which comprises a base and a concave table arranged at the upper end of the base. Pre-clamping plates are arranged on the periphery of the interior of the concave table, adjusting plates are arranged on the outer sides of the pre-clamping plates, spring telescopic rods are connected between the adjusting plates and the pre-clamping plates, and inclined plates inclined outwards are fixed to the upper ends of the pre-clamping plates; synchronous cylinders are fixed to the inner sides of the adjusting plates, pressing plates are connected to the power ends of the synchronous cylinders, and push plates are arranged on the inner sides of the pressing plates; the air cylinder body can be conveniently and rapidly pre-clamped and positioned in the concave table through the pre-clamping plate, the time for repeatedly adjusting the clamping position of the air cylinder body is effectively shortened, the periphery of the air cylinder body can be clamped and fixed at the same time, the air cylinder body is clamped through the pre-clamping plate, and in conclusion, the machining efficiency is improved. And therefore, the clamping and fixing firmness of the air cylinder body is effectively improved, and the stability of the air cylinder body during clamping machining is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cylinder block fixture technology, and in particular to a fixture for machining cylinder blocks. Background Technology

[0002] The cylinder block is the main body of the engine. It connects the cylinders and crankcase into one unit and serves as the support for the pistons, crankshaft, and other parts and accessories. The cylinder block is generally made of gray cast iron. The cylindrical cavity at the top of the cylinder block is called the cylinder, and the lower half is the crankcase that supports the crankshaft. Its inner cavity is the space for the crankshaft to move. During the cylinder block machining process, in order to ensure the machining stability of the cylinder block, it is necessary to clamp and fix the cylinder block with a fixture.

[0003] Referring to Chinese Patent Publication No. CN 218696187 U, a jig for machining cylinder blocks is disclosed, belonging to the field of cylinder block machining technology. It solves the problems of insufficient contact points and instability when clamping cylinder blocks in current jigs. This jig for machining cylinder blocks includes a worktable, a first motor fixed inside the worktable's cavity, a drive gear fixed to the output shaft of the first motor, and a fixed shell on the top of the worktable. The fixed shell's inner cavity is fixed with teeth, and the drive gear meshes with the teeth. This invention uses the meshing of the drive gear and teeth to rotate the fixed shell, thereby rotating the cylinder block. This not only makes the fixed shell more stable during rotation but also reduces the effort required for the first motor, increasing its service life. Simultaneously, the spur gear moves the rack plate, causing the clamping plate to clamp and fix the cylinder block, reducing the effort required for the second motor and increasing the stability when clamping and fixing the cylinder block.

[0004] By referring to the above comparative documents, it can be seen that the existing technology still has the following shortcomings. Before clamping and fixing the cylinder body, due to the lack of pre-clamping and positioning measures, it is necessary to repeatedly adjust the clamping position of the cylinder body during the clamping and fixing process. This will waste the time of the workers. Moreover, only the two sides of the cylinder body are clamped and positioned, which can easily lead to the cylinder body not being clamped and fixed firmly enough, affecting the processing stability after the cylinder body is clamped and fixed. Utility Model Content

[0005] This utility model provides a jig for machining cylinder blocks, which facilitates the pre-clamping and positioning of cylinder blocks and effectively ensures the reliability of the cylinder block clamping and fixing.

[0006] In order to solve the problems of the prior art, this utility model discloses a jig for machining cylinder blocks, including a base and a concave platform, wherein the concave platform is disposed on the upper end of the base;

[0007] The concave platform is provided with pre-clamping plates on all four sides, and adjusting plates are provided on the outer side of the pre-clamping plates. Spring telescopic rods are connected between the adjusting plates and the pre-clamping plates. An outwardly inclined plate is fixed at the upper end of the pre-clamping plates.

[0008] Synchronizing cylinders are fixed inside the adjusting plates. A pressure plate is connected to the power end of the synchronizing cylinder. A push plate is provided inside the pressure plate. A push rod is fixed inside the push plate. A storage groove is opened inside the pre-clamping plate. An anti-slip clamping plate is provided in the storage groove.

[0009] Furthermore, a support shaft is fixed to the lower end of the concave platform, and the lower end of the support shaft is rotatably connected to the upper end of the base. A secondary gear is fixedly sleeved around the support shaft.

[0010] Furthermore, a motor is fixed to the upper end of the base, and a main gear is connected to the power end of the motor, which meshes with a secondary gear.

[0011] Furthermore, each of the adjusting plates is rotatably connected to a threaded adjusting rod, and the threaded adjusting rod rotates outward and passes through the concave platform.

[0012] Furthermore, a scale is fixed to the outside of each of the adjustment plates, and the scale slides outward through the concave platform.

[0013] Furthermore, each push plate is connected to an adjacent pre-clamping plate with a return spring, and each push rod slides through the storage groove via a pre-installation plate, with the end of the push rod fixed to the anti-slip clamping plate.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0015] 1. By setting a pre-clamping plate on all four sides of the concave platform, combined with the elasticity of the spring telescopic rod, the cylinder body can be pre-clamped and positioned in the concave platform in a convenient and quick manner, effectively reducing the time spent repeatedly adjusting the clamping position of the cylinder body.

[0016] 2. The operation of the synchronous cylinder drives the anti-slip clamping plates to clamp and fix the cylinder body. There are four anti-slip clamping plates, which facilitates the simultaneous clamping and fixing of the cylinder body around its perimeter. Combined with the clamping of the pre-clamping plates, this effectively improves the reliability of the cylinder body clamping and fixing, and helps to ensure the stability of the cylinder body clamping process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0019] Figure 3This is a schematic diagram of the internal structure of the pre-clamping plate of this utility model;

[0020] Figure 4 This is a top view of the overall structure of this utility model;

[0021] Figure 5 This is a top view of the overall internal structure of this utility model;

[0022] Figure 6 This is a top view of the internal structure of the pre-clamping plate of this utility model.

[0023] Figure 1-6 In the middle: 1. Base, 2. Concave platform, 3. Adjusting plate, 4. Pre-clamping plate, 5. Inclined plate, 6. Threaded adjusting rod, 7. Scale, 8. Support shaft, 9. Motor, 10. Main gear, 11. Secondary gear, 12. Spring telescopic rod, 13. Synchronous cylinder, 14. Pressure plate, 15. Push plate, 16. Storage groove, 17. Anti-slip clamping plate, 18. Push rod, 19. Return spring. Detailed Implementation

[0024] Fixtures for machining cylinder blocks:

[0025] like Figure 1-6 As shown, in this embodiment, a base 1 and a concave platform 2 are included. The concave platform 2 is located on the upper end of the base 1. Pre-clamping plates 4 are provided around the inside of the concave platform 2. Adjusting plates 3 are provided on the outer side of the pre-clamping plates 4. Spring telescopic rods 12 are connected between the adjusting plates 3 and the pre-clamping plates 4. An outwardly inclined plate 5 is fixed to the upper end of the pre-clamping plates 4.

[0026] When the cylinder body is clamped and fixed by the clamp, the cylinder body is placed into the concave platform 2 along the inclined plate 5. During this process, the cylinder body will slide down along the inclined surface of the inclined plate 5. At the same time, the inclined plate 5 will drive the pre-clamping plate 4 to compress the spring telescopic rod 12. Since a pre-clamping plate 4 is set on all four sides inside the concave platform 2, the elasticity of the spring telescopic rod 12 will apply a reaction force to the pre-clamping plate 4. The four pre-clamping plates 4 will simultaneously be elastically clamped around the cylinder body, so that the cylinder body can be pre-clamped and positioned in the concave platform 2 conveniently and quickly through the pre-clamping plates 4, effectively reducing the time spent repeatedly adjusting the clamping position of the cylinder body.

[0027] like Figure 2 , 3As shown in Figures 5 and 6, in this embodiment, a synchronous cylinder 13 is fixed to the inner side of each adjusting plate 3, and a pressure plate 14 is connected to the power end of each synchronous cylinder 13. A push plate 15 is provided on the inner side of each pressure plate 14, and a push rod 18 is fixed on the inner side of each push plate 15. A storage groove 16 is opened on the inner side of each pre-clamping plate 4, and an anti-slip clamping plate 17 is provided in each storage groove 16. A return spring 19 is connected between each push plate 15 and the adjacent pre-clamping plate 4. The push rod 18 slides through the pre-installation plate 4 into the storage groove 16, and the end of the push rod 18 is fixed to the anti-slip clamping plate 17.

[0028] When the cylinder body needs to be fully clamped and fixed, the four synchronous cylinders 13 work simultaneously. The extension of the synchronous cylinders 13 will drive the pressure plate 14 to push the push plate 15. The push plate 15 will drive the push rod 18 to push the anti-slip clamp 17. At the same time, the push plate 15 will compress the return spring 19. Therefore, the push rod 18 will push the anti-slip clamp 17 out of the storage groove 16 until the anti-slip clamp 17 is clamped on the side of the cylinder body. Since there are four anti-slip clamps 17, it is convenient to clamp and fix the cylinder body around its perimeter at the same time. Combined with the clamping of the cylinder body by the pre-clamping plate 4, the reliability of the cylinder body clamping and fixing is effectively improved, which helps to ensure the stability of the cylinder body clamping and processing.

[0029] like Figure 2 , 3 As shown in Figures 5 and 6, in this embodiment, each push plate 15 is connected to an adjacent pre-clamping plate 4 with a return spring 19, and each push rod 18 slides through the pre-installation plate 4 into the storage groove 16, with the end of the push rod 18 fixed to the anti-slip clamping plate 17.

[0030] When the processed cylinder body needs to be removed from the fixture, the contraction of the synchronous cylinder 13 causes the pressure plate 14 to stop pushing the push plate 15. Therefore, combined with the rebound force of the return spring 19, the push plate 15, push rod 18 and anti-slip clamp 17 will be reset. At this time, the anti-slip clamp 17 resets and moves into the storage groove 16. Since the anti-slip clamp 17 no longer applies clamping force and friction to the cylinder body, the cylinder body is elastically clamped by the pre-clamping plate 4. Therefore, pulling the cylinder body upward can easily remove it from the concave table 2, so the cylinder body can be easily removed from the fixture. The reset fixture facilitates the subsequent clamping and fixing of the cylinder body.

[0031] like Figure 2 , 5 As shown in this embodiment, threaded adjusting rods 6 are rotatably connected to the outer side of the adjusting plate 3. The threaded adjusting rods 6 rotate outward and pass through the concave platform 2. A scale 7 is fixed to the outer side of the adjusting plate 3. The scale 7 slides outward and passes through the concave platform 2.

[0032] When it is necessary to adjust the clamping range of the clamp on the cylinder body, in order to clamp and fix cylinder bodies of various sizes using the clamp, the threaded adjusting rod 6 is turned and the adjusting plate 3 is moved. The adjusting plate 3 will move the spring telescopic rod 12, the pre-clamping plate 4, and the anti-slip clamping plate 17 together, thereby making it easy to adjust the clamping position of the pre-clamping plate 4 and the anti-slip clamping plate 17. In addition, the adjusting plate 3 will move the scale 7 together. By using the scale value on the scale 7, it is easy to accurately adjust the clamping position of the pre-clamping plate 4 and the anti-slip clamping plate 17. In summary, by adjusting the position of the pre-clamping plate 4 and the anti-slip clamping plate 17, it is easy to clamp and fix cylinder bodies of various sizes using the clamp, effectively ensuring the applicability of the clamp.

[0033] like Figure 1 As shown, in this embodiment, a support shaft 8 is fixed at the lower end of the concave platform 2, and the lower end of the support shaft 8 is rotatably connected to the upper end of the base 1. A secondary gear 11 is fixedly sleeved around the support shaft 8, and a motor 9 is fixed at the upper end of the base 1. The power end of the motor 9 is connected to a main gear 10, and the main gear 10 meshes with the secondary gear 11.

[0034] When it is necessary to adjust the machining position of the cylinder body after rotation on the fixture, the main gear 10, the auxiliary gear 11, the support shaft 8, the concave platform 2 and the clamped cylinder body are rotated by the operation of the motor 9, so that the machining position of the cylinder body after rotation can be easily adjusted.

Claims

1. A jig for machining cylinder blocks, comprising a base (1) and a concave platform (2), wherein the concave platform (2) is disposed on the upper end of the base (1), characterized in that: The concave platform (2) is provided with pre-clamping plates (4) on all four sides. The pre-clamping plates (4) are provided with adjusting plates (3) on the outside. The adjusting plates (3) and the pre-clamping plates (4) are connected by spring telescopic rods (12). The upper end of the pre-clamping plates (4) is fixed with outward inclined plates (5). Synchronous cylinders (13) are fixed inside the adjusting plate (3). A pressure plate (14) is connected to the power end of the synchronous cylinder (13). A push plate (15) is provided inside the pressure plate (14). A push rod (18) is fixed inside the push plate (15). A storage groove (16) is opened inside the pre-clamping plate (4). An anti-slip clamping plate (17) is provided inside the storage groove (16).

2. The jig for machining a cylinder block according to claim 1, characterized by: The lower end of the concave platform (2) is fixed with a support shaft (8), the lower end of the support shaft (8) is rotatably connected to the upper end of the base (1), and a secondary gear (11) is fixedly sleeved around the support shaft (8).

3. The machining jig for an engine block according to claim 2, characterized in that: A motor (9) is fixed to the upper end of the base (1), and a main gear (10) is connected to the power end of the motor (9). The main gear (10) meshes with the auxiliary gear (11).

4. The machining jig for an engine block according to claim 1, characterized by: Each of the adjusting plates (3) is rotatably connected to a threaded adjusting rod (6), and the threaded adjusting rod (6) rotates outward and passes through the concave platform (2).

5. The machining jig for an engine block according to claim 4, characterized in that: Each of the adjusting plates (3) has a scale (7) fixed on its outer side, and the scale (7) slides outward through the concave platform (2).

6. The machining jig for an engine block according to claim 1, characterized by: Each push plate (15) is connected to an adjacent pre-clamping plate (4) by a return spring (19), and each push rod (18) slides through the pre-clamping plate (4) into the storage groove (16), and the end of the push rod (18) is fixed to the anti-slip clamping plate (17).

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