Piston bush grinding clamp for special vehicle

Abstract

The utility model discloses a piston bush grinding clamp for special vehicles, which relates to the technical field of piston bush processing and comprises a base and an adjusting plate arranged at the top end of the base, a plurality of guide columns are arranged at the top end of the base, a guide rail is sleeved with a spring and a guide sleeve respectively, the top end of the spring abuts against the guide sleeve, and the guide sleeve is fixedly arranged in the adjusting plate. A fixing block is fixedly arranged at the top end of the adjusting plate, supporting columns are symmetrically arranged on the two sides of the fixing block respectively, the supporting columns are movably connected with a supporting frame through first rotating pins, and second rotating pins are movably inserted into the two sides of the supporting frame respectively. The grinding device has the beneficial effects that the inner chamfer of the piston sleeve can be automatically attached to the grinding head through the floating cylinder seat, the floating cylinder seat can eliminate micro difference caused by product individual difference or clamping difference, the adaptability is high, meanwhile, certain contact grinding force is always kept between the grinding head and the piston sleeve, the inner chamfer of the piston sleeve is effectively ground, and the grinding efficiency is improved. And the grinding efficiency and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of piston sleeve processing, in particular to a piston sleeve grinding fixture for special vehicles. Background Art

[0002] like Figure 2 The piston sleeve shown is made of hardened bearing steel. A square groove and symmetrical flattened squares are cut from the cylindrical body. The required outer diameter tolerance is 0.015, the roughness is Ra0.3, and the outer cylindrical surface requires grinding. Currently, due to the structural characteristics of the product, a centerless grinder cannot be used. A CNC cylindrical grinder is proposed, but the product is a thin-walled part. Heat treatment deformation creates an elliptical shape, and the left inner center will deform during clamping, causing the product to rebound and return to an elliptical state after grinding.

[0003] The existing method is to grind the chamfer of the left shear tip into a circle before grinding. The specific process flow is: blank - turning, milling, drilling - heat treatment and hardening - grinding the left inner chamfer - grinding the outer circle. However, there is currently no corresponding special grinding fixture for "grinding the left inner chamfer", resulting in low production efficiency.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In view of the problems in the related art, the purpose of the present utility model is to provide a piston sleeve grinding fixture for special vehicles to overcome the above-mentioned technical problems existing in the existing related art.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A piston sleeve grinding fixture for special vehicles, comprising: a base and an adjustment plate provided at the top of the base, wherein the top of the base is provided with a plurality of guide posts, the guide rails are respectively provided with springs and guide sleeves, the tops of the springs abut against the guide sleeves, and the guide sleeves are fixedly provided in the adjustment plate, wherein;

[0008] A fixed block is fixed to the top of the adjusting plate, and symmetrically arranged support columns are respectively provided on both sides of the fixed block. The support columns are movably connected to the support frame through a first rotating pin, and second rotating pins are movably inserted on both sides of the support frame. The second rotating pins are movably sleeved with floating blocks near one side end, and a workpiece disk is connected between the floating blocks. A cylinder seat is provided on the top of the workpiece disk, and a gap is left between the workpiece disk and the fixed block.

[0009] Furthermore, a plurality of U-shaped screw holes are respectively provided on both sides of the base.

[0010] Furthermore, symmetrically arranged vertical plates are provided on both sides of the top of the base, threaded blocks are inserted through the tops of the vertical plates, and a nut is engaged at one end of the threaded block, and the adjustment plate is located between the vertical plates.

[0011] Furthermore, horizontally arranged cylinder rods are fixedly provided on both sides of the cylinder seat, and the ends of the cylinder rods are respectively abutted against the threaded stoppers.

[0012] Furthermore, the threaded stopper and the end of the cylindrical rod are respectively V-shaped structures adapted to each other.

[0013] Furthermore, the floating block is an L-shaped structure, and the vertical height of the floating block is smaller than the vertical height of the support column.

[0014] Furthermore, a pin is movably inserted into the cylinder seat.

[0015] Beneficial effects of the utility model:

[0016] The utility model pre-inserts the processed piston sleeve into the cylinder seat, and the fixed block cooperates with the support column and under the action of the first rotating pin, the support frame can rotate at a certain angle along the first rotating pin, and the floating block is movably connected to the support frame through the second rotating pin, so that the workpiece disk cooperates with the floating block to rotate at a certain angle along the second rotating pin. The piston sleeve can make the chamfer inside the piston sleeve fit the grinding head automatically through the floating cylinder seat. The floating cylinder seat can eliminate slight differences caused by individual product differences or clamping differences, and has high adaptability.

[0017] In addition, the adjustment plate cooperates with the guide sleeve to slide up and down along the guide rail and under the action of the spring, so that the grinding head and the piston sleeve always maintain a certain contact grinding force, effectively grinding the chamfer inside the piston sleeve, and improving the grinding efficiency and accuracy.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 1 is a schematic structural diagram of a piston sleeve grinding fixture for special vehicles according to an embodiment of the present utility model;

[0022] Figure 2 It is a schematic diagram of the existing piston sleeve structure;

[0023] Figure 3 The figure is a schematic structural diagram of a workpiece disk of a piston sleeve grinding fixture for special vehicles according to an embodiment of the utility model.

[0024] In the picture:

[0025] 1. Base; 2. Adjustment plate; 3. Guide column; 4. Spring; 5. Guide sleeve; 6. Support column; 7. First rotating pin; 8. Support frame; 9. Second rotating pin; 10. Floating block; 11. Workpiece disk; 12. Cylinder seat; 13. U-shaped slot screw hole; 14. Vertical plate; 15. Threaded stopper; 16. Nut; 17. Cylinder rod; 18. Pin; 19. Fixed block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] According to an embodiment of the present utility model, a piston sleeve grinding fixture for special vehicles is provided.

[0028] like Figure 1-Figure 3 As shown, the first embodiment of the present invention is:

[0029] A piston sleeve grinding fixture for special vehicles includes: a base 1 and an adjustment plate 2 provided at the top of the base 1, wherein the top of the base 1 is provided with a plurality of guide posts 3, the guide rails 3 are respectively provided with springs 4 and guide sleeves 5, the top of the spring 4 abuts against the guide sleeve 5, and the guide sleeve 5 is fixed in the adjustment plate 2, wherein;

[0030] A fixed block 5 is fixed on the top of the adjustment plate 2, and symmetrically arranged support columns 6 are provided on both sides of the fixed block 5. The support columns 6 are movably connected to the support frame 8 through the first rotating pin 7. Second rotating pins 9 are movably inserted on both sides of the support frame 8. The second rotating pin 9 is movably sleeved with floating blocks 10 near one end. A workpiece disk 11 is connected between the floating blocks 10. A cylinder seat 12 is provided at the top of the workpiece disk 11, and a gap is left between the workpiece disk 11 and the fixed block 5.

[0031] The floating block 10 is an L-shaped structure, and the vertical height of the floating block 10 is smaller than the vertical height of the support column 6 .

[0032] A pin 18 is movably inserted into the cartridge seat 12 .

[0033] With the aid of the above technical solution, the piston sleeve for processing is pre-inserted into the cylinder seat 12 and limited by the pin 18. The inner conical hole of the piston sleeve for processing faces upward, and the pin 18 is used to limit the position of the piston sleeve for processing and the cylinder seat 12 through the lower side horizontal hole of the piston sleeve for processing and the cylinder seat 12. At the same time, the fixed block 5 cooperates with the support column 6 and under the action of the first rotating pin 7, the support frame 8 rotates along the first rotating pin 7 to a certain angle, and the floating block 10 is movably connected to the support frame 8 through the second rotating pin 9, so that the workpiece disk 11 cooperates with the floating block 10 to rotate along the second rotating pin 9 to a certain angle. During operation, when the equipment grinding head slowly contacts the piston sleeve for processing from top to bottom, the piston sleeve can automatically fit the inner chamfer of the piston sleeve with the grinding head through the floating cylinder seat 12. The floating cylinder seat 12 can eliminate slight differences caused by individual product differences or clamping differences.

[0034] In addition, the adjustment plate 2 cooperates with the guide sleeve 5 to slide up and down along the guide rail 3 and the spring 4, so that the grinding head and the piston sleeve always maintain a certain contact grinding force, effectively grinding the chamfer inside the piston sleeve.

[0035] Example 2

[0036] like Figure 1-Figure 3 As shown, the second embodiment of the present invention is:

[0037] A piston sleeve grinding fixture for special vehicles, based on the first embodiment, further includes: a plurality of U-groove screw holes 13 are respectively provided on both sides of the base 1.

[0038] In this technical solution, the base 1 is fixed to the equipment platform through a plurality of U-shaped slot screw holes 13, which facilitates the assembly of the base 1.

[0039] In addition, symmetrically arranged vertical plates 14 are provided on either side of the top of the base 1. Threaded blocks 15 are inserted through the tops of the vertical plates 14, and nuts 16 are engaged at one end of the threaded blocks 15. The adjustment plate 2 is located between the vertical plates 14. Horizontally fixed to either side of the cylinder base 12 are horizontally mounted cylindrical rods 17, the ends of which abut against the threaded blocks 15. The ends of the threaded blocks 15 and cylindrical rods 17 form mutually adaptable V-shaped structures.

[0040] Specifically, during application, when the cartridge seat 12 is adapted to the grinding head, the cartridge rods 17 on both sides can be used to abut against the threaded block 15, and the threaded block 15 can be fixed by the nut 16 to fix the cartridge seat 12, thereby preventing the cartridge seat 12 from sliding when the equipment grinding head slowly contacts the piston sleeve for processing from top to bottom, thereby improving the product processing accuracy.

[0041] In summary, with the help of the above technical solution of the utility model, the following effects can be achieved:

[0042] The processed piston sleeve is inserted into the cylinder seat 12 in advance, and the fixed block 5 cooperates with the support column 6 and under the action of the first rotating pin 7, the support frame 8 is rotated at a certain angle along the first rotating pin 7, and the floating block 10 is movably connected to the support frame 8 through the second rotating pin 9, so that the workpiece disk 11 cooperates with the floating block 10 to rotate at a certain angle along the second rotating pin 9. The piston sleeve can make the chamfer inside the piston sleeve fit with the grinding head by itself through the floating cylinder seat 12. The floating cylinder seat 12 can eliminate slight differences caused by individual product differences or clamping differences, and has high adaptability.

[0043] In addition, the adjustment plate 2 cooperates with the guide sleeve 5 to slide up and down along the guide rail 3 and the spring 4, so that the grinding head and the piston sleeve always maintain a certain contact grinding force, effectively grinding the chamfer inside the piston sleeve, and improving the grinding efficiency and accuracy.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A piston sleeve grinding fixture for special vehicles, characterized in that: include: A base (1) and an adjustment plate (2) arranged at the top of the base (1), and a plurality of guide pillars (3) are arranged at the top of the base (1), and the guide pillars (3) are respectively sleeved with springs (4) and guide sleeves (5), the top of the spring (4) abuts against the guide sleeve (5), and the guide sleeve (5) is fixedly arranged in the adjustment plate (2), wherein; A fixed block (19) is fixedly provided at the top of the adjustment plate (2), and symmetrically arranged support columns (6) are respectively provided on both sides of the fixed block (19), and the support columns (6) are movably connected to a support frame (8) through a first rotating pin (7), and second rotating pins (9) are movably inserted on both sides of the support frame (8), and floating blocks (10) are movably sleeved near one end of the second rotating pin (9), and a workpiece disk (11) is connected between the floating blocks (10), and a cylinder seat (12) is provided at the top of the workpiece disk (11), and a gap is left between the workpiece disk (11) and the fixed block (19).

2. The piston sleeve grinding fixture for special vehicles according to claim 1, characterized in that: A plurality of U-shaped screw holes (13) are respectively provided on both sides of the base (1).

3. The piston sleeve grinding fixture for special vehicles according to claim 1, characterized in that: The top sides of the base (1) are respectively provided with symmetrically arranged vertical plates (14), the tops of the vertical plates (14) are respectively penetrated with threaded blocks (15), and one end of the threaded blocks (15) is meshed with a nut (16), and the adjustment plate (2) is located between the vertical plates (14).

4. The piston sleeve grinding fixture for special vehicles according to claim 3, characterized in that: Horizontally arranged cylinder rods (17) are fixedly provided on both sides of the cylinder seat (12), and the ends of the cylinder rods (17) respectively abut against the threaded stoppers (15).

5. The piston sleeve grinding fixture for special vehicles according to claim 4, characterized in that: The ends of the threaded stopper (15) and the barrel rod (17) are respectively V-shaped structures that fit each other.

6. The piston sleeve grinding fixture for special vehicles according to claim 1, characterized in that: The floating block (10) is an L-shaped structure, and the vertical height of the floating block (10) is smaller than the vertical height of the supporting column (6).

7. The piston sleeve grinding fixture for special vehicles according to claim 1, characterized in that: A pin (18) is movably inserted into the cartridge seat (12).

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