An eccentric shaft grinding surface fixture

Abstract

This invention discloses an eccentric shaft grinding fixture, comprising: a base; several eccentric shaft positioning mechanisms, which are horizontally distributed on the base and include a positioning seat with a positioning hole and a clamping groove on the top of the positioning seat, the clamping groove communicating with the positioning hole; a T-shaped clamping plate connected between adjacent positioning seats and a clamping cylinder fixedly connected to the T-shaped clamping plate; a support mechanism fixed on the base, which is positioned below the eccentric shaft after positioning; and an alignment assembly including several alignment mechanisms corresponding to the eccentric shaft positioning mechanisms. This grinding fixture has a simple structure, enables rapid positioning of the eccentric shaft, and facilitates grinding its horizontal surface.

Description

Technical Field

[0001] This invention belongs to the field of eccentric shaft machining, and specifically relates to an eccentric shaft grinding surface fixture. Background Technology

[0002] The eccentric shaft used in scroll compressors requires a flat surface to be machined on the eccentric journal at its front end. After rough machining of the flat surface, it also needs to be finished. The finishing process is generally carried out by grinding. In the existing technology, it is usually done by machining a single eccentric shaft, which has low processing efficiency and seriously restricts the processing speed. Summary of the Invention

[0003] In order to overcome one or more of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an eccentric shaft grinding surface fixture. The grinding surface fixture has a simple structure, can realize the rapid positioning of the eccentric shaft, and facilitates the grinding of its horizontal surface.

[0004] To achieve the above objectives, the present invention provides an eccentric shaft grinding surface fixture, comprising:

[0005] Base;

[0006] Several eccentric shaft positioning mechanisms are horizontally distributed on a base. Each mechanism includes a positioning seat with a positioning hole and a clamping groove on the top of the positioning seat. The clamping groove is connected to the positioning hole. A T-shaped clamping plate is connected between two adjacent positioning seats and the T-shaped clamping plate is fixedly connected to a clamping cylinder.

[0007] A support mechanism is fixed on the base, and after the eccentric shaft is positioned, the support mechanism is located below the eccentric shaft;

[0008] A alignment component, which includes several alignment mechanisms corresponding to the eccentric shaft positioning mechanism.

[0009] Furthermore, the positioning seat has a first rotary bearing and a second rotary bearing fixed in the positioning hole.

[0010] Furthermore, several support plates are fixed below the base, and the clamping cylinder is fixed at the bottom of the base. The cylinder rod of the clamping cylinder passes through the base and is hinged to the T-shaped clamping plate.

[0011] Furthermore, a waist-shaped hole is provided on the T-shaped clamping plate, through which the cylinder rod of the clamping cylinder passes.

[0012] Furthermore, slide rails are fixed on both sides of the base, and a alignment bracket is slidably connected on the slide rails. Several alignment cylinders corresponding to the eccentric shaft positioning mechanism are fixed on the top plate of the alignment bracket. An alignment ball head is located below the cylinder rod of the alignment cylinder. A push cylinder is also fixed on the base, and the push cylinder is fixedly connected to the alignment bracket.

[0013] Furthermore, the support mechanism is a support base, the support base has a support protrusion in the middle, and a support pin is interference-connected to the support protrusion.

[0014] The beneficial effects of this invention are:

[0015] First, the grinding surface fixture has a simple structure and can quickly position multiple eccentric shafts, making it easy to grind the horizontal surface in one go with high grinding efficiency.

[0016] Secondly, by driving the T-shaped clamping plate to rise and fall by the clamping cylinder, the two eccentric shafts can be positioned and clamped. At the same time, since the T-shaped clamping plate is hinged to the cylinder rod of the clamping cylinder, even if there are slight dimensional errors in the two eccentric shafts, the two eccentric shafts can still be clamped.

[0017] Third, due to the alignment ball head located below the cylinder rod of the alignment cylinder, when the cylinder rod of the alignment cylinder descends, the alignment ball head can correct the position of the eccentric shaft's work plane, allowing it to rotate and facilitating grinding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure from another direction of the present invention;

[0020] Figure 3 This is a cross-sectional view of the perspective view of the present invention;

[0021] Figure 4 It is to find the structural diagram of the positive cylinder;

[0022] Figure 5 yes Figure 1 A magnified view of the circled area;

[0023] Figure 6 This is a schematic diagram of another structure of the alignment component of the present invention;

[0024] In the diagram: 1. Base; 2. Positioning seat; 3. Positioning hole; 4. Clamping groove; 5. T-shaped clamping plate; 6. Clamping cylinder; 7. Eccentric shaft; 8. Thick shaft section; 9. First rotary bearing; 10. Second rotary bearing; 11. Support plate; 12. Waist-shaped hole; 13. Slide rail; 14. Alignment bracket; 15. Alignment cylinder; 16. Alignment ball head; 17. Push cylinder; 18. Support seat; 19. Support protrusion; 20. Support pin; 21. Eccentric journal; 22. Plane; 23. Bracket; 24. Drive motor; 25. L-shaped seat plate; 26. Torque sensor; 27. Air shaft; 28. Linear guide rail; 29. ​​Connecting hole. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] See Figure 1-6 The eccentric shaft grinding surface fixture shown includes:

[0027] Base 1;

[0028] A plurality of eccentric shafts 7 positioning mechanisms are horizontally distributed on a base 1. Each eccentric shaft 7 positioning mechanism includes a positioning seat 2, a positioning hole 3 is provided in the positioning seat 2, and a pressing groove 4 is provided on the top of the positioning seat 2. The pressing groove 4 is connected to the positioning hole 3. A T-shaped pressing plate 5 is connected between two adjacent positioning seats 2. The T-shaped pressing plate 5 is fixedly connected to a pressing cylinder 6.

[0029] A support mechanism is fixed on the base 1. After the eccentric shaft 7 is positioned, the support mechanism is located below the eccentric shaft 7.

[0030] A alignment component, comprising several alignment mechanisms corresponding to the eccentric shaft 7 positioning mechanism.

[0031] The process of using this invention is as follows: when it is necessary to grind the plane on the eccentric shaft 7, the eccentric shaft 7 is first connected to the positioning seat 2. Since the positioning seat 2 is provided with positioning holes 3, the eccentric shaft 7 can pass through the positioning holes 3 until the end face of its coarse shaft part 8 abuts against the support mechanism. Then, the alignment component is activated, which makes the position of the eccentric shaft 7 finely adjusted in the circumferential direction. After the eccentric shaft 7 is adjusted to the correct position, the grinding action of the neck plane of the eccentric shaft 7 can be performed.

[0032] Furthermore, the positioning seat 2 has a first rotary bearing and a second rotary bearing fixed in the positioning hole 3. By fixing the first rotary bearing and the second rotary bearing in the positioning hole 3, the eccentric shaft 7 can be adjusted more smoothly in the positioning seat 2, and it will not jam when it deflects.

[0033] Furthermore, several supporting plates are fixed below the base 1, and the clamping cylinder 6 is fixed to the bottom of the base 1. The cylinder rod of the clamping cylinder 6 passes through the base 1 and is hinged to the T-shaped clamping plate 5. By fixing the supporting plates below the base 1 and fixing the clamping cylinder 6 to the bottom of the base 1, when the cylinder rod of the clamping cylinder 6 is hinged to the T-shaped clamping plate 5, even if the eccentric shaft 7 has dimensional errors, the eccentric shaft 7 can still be clamped.

[0034] Furthermore, the T-shaped clamping plate 5 has an oblong hole, through which the cylinder rod of the clamping cylinder 6 passes. Specifically, the T-shaped clamping plate 5 of the present invention is provided with an oblong hole, so that the cylinder rod of the clamping cylinder 6 can pass through the oblong hole and be hinged to the oblong hole, thus giving the T-shaped clamping plate 5 sufficient space for hinged swing.

[0035] Furthermore, slide rails are fixed on both sides of the base 1, and a alignment bracket is slidably connected to the slide rails. Several alignment cylinders corresponding to the positioning mechanism of the eccentric shaft 7 are fixed on the top plate of the alignment bracket. An alignment ball head is located below the cylinder rod of the alignment cylinder. A push cylinder is also fixed on the base 1, and the push cylinder is fixedly connected to the alignment bracket. Specifically, to make the invention more convenient to use, slide rails are connected to the base 1. The alignment bracket slidably connected to the slide rails is pushed by the push cylinder to move to the eccentric shaft 7 neck. Then, the cylinder rod of the alignment cylinder descends, and the alignment ball head on the cylinder rod is located on the left side of the plane of the eccentric shaft 7 neck. When the alignment ball head presses downward, the eccentric shaft 7 rotates, thus aligning the eccentric shaft 7. After alignment is completed, the alignment cylinder resets, and finally, multiple eccentric shafts 7 can be ground at once by a grinding machine.

[0036] Furthermore, the support mechanism is a support base, and the support base has a support protrusion 19 in the middle, in which a support pin is interference-connected. Specifically, since the eccentric shaft 7 will rotate during the alignment process, the support pin will be continuously worn during rotation. Therefore, the support pin is in a detachable state, and can be replaced when it is excessively worn.

[0037] Furthermore, the alignment component of the present invention can also employ, for example... Figure 6The structure consists of a bracket fixedly connected to the side of the base 1, electric linear guide rails fixed on both sides of the bracket's horizontal plate, an L-shaped base plate connected to the linear guide rails, and a drive motor corresponding to the number of positioning seats 2 fixed on the L-shaped base plate. A torque sensor is installed on the drive motor, and an air shaft is fixed at its end. This structure enables greater automation of the invention. Specifically, the linear guide first positions the L-shaped base plate on the far left. Then, the operator inserts the eccentric shaft 7 into the positioning hole 3 of the positioning seat 2. Subsequently, the linear guide drives the L-shaped base plate to move towards the eccentric shaft 7, causing the air shaft at the end of the drive motor shaft to enter the connecting hole at the tail of the eccentric shaft 7. Air is then introduced into the air shaft to expand it, causing it to tighten in the connecting hole. After tightening, the drive motor rotates slowly. At this time, the torque sensor on it detects the torque applied to the motor shaft. When the eccentric shaft 7 neck and the support pin are squeezed, the torque will gradually increase. When a certain value is reached, it means that the plane of the eccentric shaft 7 neck is successfully aligned. At this time, the T-shaped clamping plate 5 is used to press the coarse shaft part 8 of the eccentric shaft 7, the air shaft expels air and exits, and the plane of the eccentric shaft 7 neck can be ground.

[0038] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An eccentric shaft grinding surface fixture, characterized by, Include: Base; Several eccentric shaft positioning mechanisms are horizontally distributed on the base, which include positioning seats with positioning holes and compression grooves on the top of the positioning seats, the compression grooves and the positioning holes are connected, wherein a T-shaped compression plate is connected between two adjacent positioning seats, and the T-shaped compression plate is fixedly connected with the compression cylinder; A supporting mechanism is fixed on the base, and is located below the eccentric shaft after the positioning of the eccentric shaft is completed; A finding component includes several finding mechanisms corresponding to the eccentric shaft positioning mechanisms; The base is fixed with slide rails on both sides, a finding support is slidably connected with the slide rails, the top plate of the finding support is fixed with several finding cylinders corresponding to the eccentric shaft positioning mechanisms, the cylinder rod of the finding cylinder is provided with a finding ball head below, and a pushing cylinder is further fixed on the base and fixedly connected with the finding support.

2. An eccentric shaft grinding surface fixture as claimed in claim 1, wherein: The positioning seat is fixed with a first rotating bearing and a second rotating bearing in the positioning hole.

3. An eccentric shaft grinding surface fixture as claimed in claim 2, wherein: A plurality of supporting vertical plates are fixed below the base, and the compression cylinder is fixed at the bottom of the base, the cylinder rod of the compression cylinder penetrates through the base, and is hingedly connected with the T-shaped compression plate.

4. An eccentric shaft grinding surface fixture as claimed in claim 3 wherein: A waist-shaped hole is formed in the T-shaped compression plate, and the cylinder rod of the compression cylinder penetrates through the waist-shaped hole.

5. An eccentric shaft grinding surface fixture as claimed in claim 4, wherein: The supporting mechanism is a supporting seat, the supporting seat is provided with a supporting protrusion in the middle, and the supporting protrusion is connected with a supporting pin in interference.

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