Cylinder appearance polishing clamp

Abstract

The utility model discloses a kind of cylinder body appearance polishing clamps, including first chuck and second chuck, the second chuck can be slid along the radial direction of the first chuck relative to the first chuck, the claw of the first chuck and second chuck in complete closed state can be inserted into the piston hole of cylinder body, the claw of the first chuck and second chuck in open state can be clamped tightly the piston hole wall of the cylinder body. By inserting the claw of first chuck and second chuck into the piston hole of cylinder body simultaneously and clamping tightly hole wall, effectively prevent displacement or rotation deviation of cylinder body during polishing process;At the same time, the second chuck is designed to be slidable relative to the first chuck, during clamping cylinder body, the second chuck can realize the function of self-centering of second chuck following cylinder body piston hole by displacement relative to the first chuck.

Description

Technical Field

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

[0002] As the core component of a car, the engine continuously provides power; and the cylinder block, as one of the main core parts of the engine, also holds a crucial position. Cleaning the irregular surfaces of the cylinder block casting is typically done manually on an assembly line, but can also be automated using robots or machine tools. Robotic or machine tool grinding is relatively more efficient, but during the grinding process, the cylinder block's position must be strictly fixed, without any displacement or rotational deviation, to ensure that neither over-grinding nor under-grinding occurs, thus affecting the grinding quality. Summary of the Invention

[0003] This invention provides a cylinder body surface grinding fixture to achieve reliable clamping of the cylinder body.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A cylinder body surface grinding fixture includes a first chuck and a second chuck. The second chuck can slide relative to the first chuck in the radial direction of the first chuck. When the first chuck and the second chuck are in a fully closed state, their jaws can be inserted into the piston hole of the cylinder body. When the first chuck and the second chuck are in an open state, their jaws can clamp the piston hole wall of the cylinder body.

[0006] Furthermore, it also includes a base plate, on which a connecting bracket and a slide rail are provided. The first chuck is fixed on the connecting bracket, and the second chuck is slidably connected to the slide rail via a slider.

[0007] Furthermore, it also includes a constraint plate and two limiting hooks respectively disposed on the first chuck and the second chuck, wherein the limiting hooks can form limiting grooves with both the first chuck and the second chuck;

[0008] The constraint plate is fixed on the base plate. The bottom of the constraint plate is provided with two limiting protrusions. The two limiting protrusions are respectively placed in the limiting grooves corresponding to the first chuck and the second chuck. The limiting hook can prevent the limiting protrusions from disengaging from the limiting grooves along the radial direction of the first chuck.

[0009] Furthermore, it includes a fixed protective cover for protecting the first chuck and a movable protective cover for protecting the second chuck, wherein the movable protective cover includes a main protective cover and a secondary protective cover;

[0010] The fixed protective cover is located below the first chuck body, the top of the fixed protective cover is fixed on the first chuck, and the bottom of the fixed protective cover is fixed on the base plate;

[0011] The main protective cover is located below the second chuck body. The top of the main protective cover is fixed on the second chuck, and the bottom of the main protective cover is suspended in the air. The secondary protective cover is fixed on the base plate.

[0012] Furthermore, the primary protective cover and the secondary protective cover are provided with hand holes, and the hand holes are provided with slots, and the slots are provided with inserts for sealing the hand holes.

[0013] Furthermore, the top of both the first and second chucks is provided with multiple adjusting pins that are threadedly connected to the disc body, and the top of the first chuck is also provided with a positioning pin corresponding to the positioning hole on the cylinder body.

[0014] Furthermore, the base plate is provided with a through hole, and an open washer is placed in the through hole. The base plate is fixed to the workbench by a connecting bolt that passes through the open washer and a screw. The head of the connecting bolt can pass through the through hole, but cannot pass through the open washer.

[0015] Furthermore, the base plate is provided with a pin sleeve corresponding to the positioning pin on the worktable.

[0016] Furthermore, a tool-setting block is provided on the outer periphery of the base plate.

[0017] Furthermore, the first chuck and the second chuck are connected to the hydraulic system via a distributor block.

[0018] Beneficial effects:

[0019] This utility model provides a cylinder body surface grinding fixture, which effectively prevents the cylinder body from shifting or rotating during the grinding process by simultaneously inserting the jaws of the first chuck and the second chuck into the piston hole of the cylinder body and clamping the hole wall. At the same time, the second chuck is designed to slide relative to the first chuck. During the clamping process of the cylinder body, the second chuck can achieve the function of self-centering by following the piston hole of the cylinder body through the displacement relative to the first chuck. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram showing the fit between a cylinder body surface grinding fixture and a cylinder body disclosed in this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a cylinder block surface grinding fixture disclosed in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a cylinder body exterior grinding fixture for removing the fixed protective cover and the main protective cover, as disclosed in this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a cylinder body surface grinding fixture for removing the fixed and dynamic protective covers, as disclosed in this utility model.

[0025] Figure 5 This is a front view schematic diagram of a cylinder body exterior grinding fixture for removing a fixed protective cover and a moving protective cover, as disclosed in this utility model;

[0026] Figure 6 This is a bottom view schematic diagram of a cylinder body exterior grinding fixture for removing a fixed protective cover and a moving protective cover, as disclosed in this utility model.

[0027] Figure 7 for Figure 5 Enlarged view of point A.

[0028] In the picture:

[0029] 1. First chuck;

[0030] 2. Second chuck;

[0031] 3. Connecting bracket;

[0032] 4. Slide rail;

[0033] 5. Base plate;

[0034] 6. Constraint plate; 61. Limiting protrusion;

[0035] 7. Limit hook;

[0036] 8. Fixed protective cover;

[0037] 9. Main protective cover;

[0038] 10. Secondary protective cover;

[0039] 11. Insert plate;

[0040] 12. Positioning pin;

[0041] 13. Adjust the screws;

[0042] 14. Open-end washers;

[0043] 15. Pin sleeve;

[0044] 16. Separate oil blocks;

[0045] 17. Tool setting block;

[0046] 18. Connecting rod;

[0047] 19. Cylinder block;

[0048] 20. Support rod;

[0049] 21. Hydraulic pipelines;

[0050] 22. Slide. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0052] This embodiment provides a cylinder block surface grinding fixture, such as Figures 1 to 5 As shown, it includes a first chuck 1 and a second chuck 2. The second chuck 2 can slide relative to the first chuck 1 in the radial direction of the first chuck 1. When the first chuck 1 and the second chuck 2 are in a fully closed state, their jaws can be inserted into the piston hole of the cylinder body 19. When the first chuck 1 and the second chuck 2 are in an open state, their jaws can clamp the piston hole wall of the cylinder body 19.

[0053] By simultaneously inserting the jaws of the first chuck 1 and the second chuck 2 into the piston hole of the cylinder and clamping them against the hole wall, displacement or rotational deviation of the cylinder is effectively prevented during the grinding process. At the same time, the second chuck 2 is designed to slide relative to the first chuck 1. During the clamping process of the cylinder, the second chuck 2 can achieve the function of self-centering with the piston hole of the cylinder by displacing itself relative to the first chuck 1 (the jaws of the second chuck 2, during the opening process, contact the piston hole wall, causing the second chuck 2 to move).

[0054] Specifically, such as Figures 3 to 5 As shown, it also includes a base plate 5, such as Figure 5As shown, a connecting bracket 3 and a slide rail 4 are fixed to the base plate 5 by screws. The first chuck 1 is fixed to the connecting bracket 3 by screws, and the second chuck 2 is slidably connected to the slide rail 4 by a slider. In this embodiment, the second chuck 2 is fixed to the slide block 22 by screws, and a slider that is slidably connected to the slide rail 4 is fixed to the bottom of the slide block 22 (an adjusting shim can be added between the slide block 22 and the slider to level the slide block 22).

[0055] Preferably, such as Figure 5 and Figure 7 As shown, it also includes a constraint plate 6 and two limiting hooks 7 respectively disposed on the first chuck 1 and the second chuck 2. The limiting hooks 7 can form limiting grooves with the first chuck 1 and the second chuck 2.

[0056] The constraint plate 6 is fixed to the base plate 5. In this embodiment, as shown... Figure 5 As shown, a connecting rod 18 is fixed on the base plate 5. The connecting rod 18 has a threaded hole, and the constraint plate 6 has a mounting hole corresponding to the threaded hole. The constraint plate 6 is fixedly connected to the connecting rod 18 on the base plate 5 by bolts in the mounting holes. Figure 7 As shown, the bottom of the constraint plate 6 is provided with two limiting protrusions 61. The two limiting protrusions 61 are respectively placed in the limiting grooves corresponding to the first chuck 1 and the second chuck 1. The limiting hook 7 can prevent the limiting protrusions 61 from disengaging from the limiting grooves along the radial direction of the first chuck 1.

[0057] The second chuck 2 can slide relative to the first chuck 1. In order to ensure that the first chuck 1 and the second chuck 2 can be quickly aligned with the piston hole of the cylinder 19, a constraint plate 6 is set to constrain the distance between the second chuck 2 and the first chuck 1. When the second chuck 2 slides relative to the first chuck 1, the limiting hook 7 on the second chuck 2 moves radially relative to the limiting protrusion 61 of the first chuck 1. The limiting groove provides an active gap for the limiting hook 7 and the limiting protrusion 61.

[0058] Preferably, such as Figure 1 and Figure 2 As shown, it includes a fixed protective cover 8 for protecting the first chuck 1 and a movable protective cover for protecting the second chuck 2. The movable protective cover includes a main protective cover 9 and a secondary protective cover 10.

[0059] The fixed protective cover 8 is located below the first chuck 1. The top end of the fixed protective cover 8 is fixed to the first chuck 1 by screws, and the bottom end of the fixed protective cover 8 is fixed to the base plate 5 by screws.

[0060] The main protective cover 9 is located below the second chuck 2. The top of the main protective cover 9 is fixed to the second chuck 2 with screws, and the bottom of the main protective cover 9 is suspended, so that the main protective cover 9 can move with the second chuck 2. The secondary protective cover 10 is fixed to the base plate 5 with screws.

[0061] To improve structural strength, a support rod 21 is fixed between the main protective cover 9 and the slide 22 to minimize deformation of the main protective cover 9.

[0062] Preferably, the fixed protective cover 8 and the secondary protective cover 10 are provided with hand holes, and the hand holes are provided with slots (the slots are formed by bending members around the outer periphery of the hand holes), such as... Figure 2 As shown, the slot is provided with a plate 11 for blocking the hand hole. The plate 11 is provided with a handle. By pulling the plate 11 with the handle, the installer can put his hand into the fixed protective cover 8 and the secondary protective cover 10, thereby connecting the base plate 5 and the workbench below with connecting bolts.

[0063] Preferably, such as Figure 2 As shown, the top of the first chuck 1 and the second chuck 2 are provided with multiple adjusting pins 13 that are threadedly connected to the disc body. The top of the first chuck 1 is also provided with a positioning pin 12 corresponding to the positioning hole on the cylinder body 19. The cylinder body 19 is leveled by turning the adjusting pins 13 and positioned by the positioning pin 12.

[0064] Preferably, the base plate 5 is provided with through holes, such as... Figures 3 to 6 As shown, an open washer 14 is placed at the through hole. The base plate 5 is fixed to the workbench by a connecting bolt that passes through the open washer 14. The head of the connecting bolt can pass through the through hole but cannot pass through the open washer 14, so that after loosening the connecting bolt, the open washer 14 can be pulled out, and the base plate 5 and the workbench below can be separated.

[0065] Preferably, such as Figure 6 As shown, the base plate 5 is fixed with a pin sleeve 15 corresponding to the positioning pin on the worktable to ensure accurate positioning of the base plate 5 and the worktable.

[0066] Preferably, such as Figure 3 As shown, the base plate 5 is provided with a tool setting block 17 on its outer periphery to facilitate quick tool setting of the grinding tools.

[0067] Preferably, such as Figure 2 and Figure 3 As shown, the first chuck 1 and the second chuck 2 are connected to the hydraulic system through the oil distribution block 16 connected to the hydraulic pipeline 21. By setting the oil distribution block 16, the oil inlets of the first chuck 1 and the second chuck 2 are connected to the hydraulic system in parallel, and the oil outlets of the first chuck 1 and the second chuck 2 are connected to the hydraulic system in parallel.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cylinder block surface grinding fixture, characterized in that, It includes a first chuck (1) and a second chuck (2). The second chuck (2) can slide relative to the first chuck (1) in the radial direction of the first chuck (1). When the first chuck (1) and the second chuck (2) are in a fully closed state, their jaws can be inserted into the piston hole of the cylinder. When the first chuck (1) and the second chuck (2) are in an open state, their jaws can clamp the piston hole wall of the cylinder.

2. The cylinder block surface grinding fixture according to claim 1, characterized in that, It also includes a base plate (5), on which a connecting bracket (3) and a slide rail (4) are provided. The first chuck (1) is fixed on the connecting bracket (3), and the second chuck (2) is slidably connected to the slide rail (4) through a slider.

3. The cylinder block surface grinding fixture according to claim 1, characterized in that, It also includes a constraint plate (6) and two limiting hooks (7) respectively disposed on the first chuck (1) and the second chuck (2), wherein the limiting hooks (7) can form limiting grooves with the first chuck (1) and the second chuck (2); The constraint plate (6) is fixed on the base plate (5). The bottom of the constraint plate (6) is provided with two limiting protrusions (61). The two limiting protrusions (61) are respectively placed in the limiting grooves corresponding to the first chuck (1) and the second chuck (2). The limiting hook (7) can prevent the limiting protrusions (61) from leaving the limiting grooves along the radial direction of the first chuck (1).

4. The cylinder block surface grinding fixture according to claim 2, characterized in that, It includes a fixed protective cover (8) for protecting the first chuck (1) and a movable protective cover for protecting the second chuck (2), the movable protective cover including a main protective cover (9) and a secondary protective cover (10); The fixed protective cover (8) is located below the first chuck (1) plate body. The top of the fixed protective cover (8) is fixed on the first chuck (1), and the bottom of the fixed protective cover (8) is fixed on the base plate (5). The main protective cover (9) is located below the second chuck (2) plate body. The top of the main protective cover (9) is fixed on the second chuck (2), and the bottom of the main protective cover (9) is suspended. The secondary protective cover (10) is fixed on the base plate (5).

5. The cylinder block surface grinding fixture according to claim 4, characterized in that, The fixed protective cover (8) and the secondary protective cover (10) are provided with hand holes, and the hand holes are provided with slots, and the slots are provided with insert plates (11) for sealing the hand holes.

6. The cylinder block surface grinding fixture according to claim 2, characterized in that, The top of the first chuck (1) and the second chuck (2) are provided with multiple adjusting pins (13) that are threaded to the disc body. The top of the first chuck (1) is also provided with a positioning pin (12) that corresponds to the positioning hole on the cylinder body.

7. The cylinder block surface grinding fixture according to claim 2, characterized in that, The base plate (5) is provided with a through hole, and an open washer (14) is placed in the through hole. The base plate (5) is fixed to the workbench by a connecting bolt through the open washer (14) with a screw. The head of the connecting bolt can pass through the through hole, but cannot pass through the open washer (14).

8. The cylinder block surface grinding fixture according to claim 2, characterized in that, The base plate (5) is provided with a pin sleeve (15) corresponding to the positioning pin on the worktable.

9. The cylinder block surface grinding fixture according to claim 2, characterized in that, The base plate (5) is provided with a tool-setting block (17) on its outer periphery.

10. The cylinder block surface grinding fixture according to claim 1, characterized in that, The first chuck (1) and the second chuck (2) are connected to the hydraulic system via a distributor block (16).

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