Rotor hot jacket pressing rod and positioning device

Abstract

The utility model provides a rotor shrinkage fit pressure lever and positioning device, rotor shrinkage fit pressure lever includes self-adaptation floating lever subassembly, positioning seat and disc spring subassembly, self-adaptation floating lever subassembly includes floating lever main part, pressure part and connecting part, pressure part and connecting part are respectively provided the both ends of floating lever main part, a supporting step is formed at the joint of the connecting part and the floating rod main body part. The positioning base is arranged outside the connecting part in a sleeving mode and can move in the axial direction of the self-adaptive floating rod assembly relative to the self-adaptive floating rod assembly. The disc spring assembly is arranged outside the connecting part in a sleeving manner and is extruded between the positioning seat and the supporting step; a limiting piece is arranged at the end, away from the floating rod body part, of the connecting part, and the elastic restoring force of the disc spring assembly forces the positioning base to abut against the limiting piece in the axial direction of the self-adaptive floating rod assembly. The rotor hot jacket pressing rod can automatically adapt to influences caused by workpiece machining errors, the problem that the rotor hot jacket angle is poor can be thoroughly solved, and the angle reject ratio is made to be zero.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a rotor shrink-fit pressure rod and a positioning device. Background Art

[0002] As lean production in air-conditioning compressor factories becomes more and more popular, in order to reduce unnecessary cost investment, manufacturers have an increasingly urgent demand to reduce the defective rate of quality problems that have long existed in the compressor production process and are difficult to completely solve.

[0003] Normally, during the compressor production process, the crankshaft needs to be limited when the pump body assembly and the rotor assembly are hot-pressed in. The existing rotor shrink-fit pressure rod is rigid and cannot adapt to the impact of the workpiece size tolerance. When the workpiece size is at the lower limit, the pressure rod will not be pressed tightly. Under this condition, the problem of poor rotor shrink-fit angle is prone to occur. Utility Model Content

[0004] The first purpose of the utility model is to provide a rotor shrinkage pressure rod which can automatically adapt to the influence of workpiece processing errors, can completely solve the problem of poor rotor shrinkage angle, and return the poor angle rate to zero.

[0005] The second object of the utility model is to provide a positioning device having the above-mentioned rotor shrink sleeve pressure rod

[0006] To achieve the above-mentioned first purpose, the utility model provides a rotor shrink-fit pressure rod, including an adaptive floating rod assembly, the adaptive floating rod assembly includes a floating rod main body, a pressure-applying part and a connecting part, the pressure-applying part and the connecting part are respectively arranged at two ends of the floating rod main body, and a supporting step is formed at the connection between the connecting part and the floating rod main body; a positioning seat, the positioning seat is sleeved outside the connecting part and can move along the axial direction of the adaptive floating rod assembly relative to the adaptive floating rod assembly; a disc spring assembly, the disc spring assembly is sleeved outside the connecting part and is squeezed between the positioning seat and the supporting step; a limiting piece is arranged at one end of the connecting part away from the floating rod main body, and the elastic restoring force of the disc spring assembly forces the positioning seat to abut the limiting piece along the axial direction of the adaptive floating rod assembly.

[0007] It can be seen from the above scheme that by arranging a disc spring between the positioning seat and the adaptive floating rod assembly, the positioning seat can move axially relative to the adaptive floating rod assembly along the adaptive floating rod assembly. When the applying part is subjected to pressure, the adaptive floating rod assembly can realize axial telescopic movement, thereby achieving an adaptive effect. It can adapt to the machining error of the workpiece and can be adjusted as needed. Because the disc spring assembly can generate a large elastic force, even if the deformation is very small, it can generate sufficient pressure to press the workpiece, thereby preventing the workpiece position from angular displacement during the production process. It can completely solve the problem of poor rotor shrink fit angle caused by workpiece machining error, realize zero poor quality rate of rotor shrink fit angle, and reduce the scrap cost caused by producing defective products.

[0008] A preferred solution is that the disc spring assembly includes a first disc spring body and a second disc spring body arranged coaxially, the first disc spring body and the second disc spring body are both conical discs, the first axial end of the first disc spring body is provided with a first opening, the first axial end of the second disc spring body is provided with a second opening, the first openings of the multiple first disc spring bodies are all oriented in the same direction, and the first opening and the second opening are arranged opposite to each other.

[0009] A further solution is that the number of at least one of the first disc spring bodies and the second disc spring bodies is more than two, and the first disc spring bodies and the second disc spring bodies are alternately arranged along the axial direction of the disc spring assembly.

[0010] A preferred solution is that the limiting member is a screw, the rod of the screw is fixedly connected to the connecting portion, and the head of the screw is limitedly matched with the positioning seat.

[0011] A further solution is that the positioning seat is provided with a receiving groove, the receiving groove is recessed from the first end wall of the positioning seat, the head of the screw is located in the receiving groove, and a gasket is also provided in the receiving groove, and the gasket is sleeved on the screw.

[0012] A further solution is that the positioning seat is also provided with a guide slot and a guide hole, the guide slot is recessed from the second end wall of the positioning seat, and the guide hole connects the guide slot and the accommodating slot; the connecting part includes a first guide section and a second guide section arranged along the axial direction of the floating rod main body, and the second guide section is connected between the floating rod main body and the first guide section; the second guide section and the guide slot are slidably matched along the axial direction of the floating rod main body, and the first guide section and the guide hole are slidably matched along the axial direction of the floating rod main body.

[0013] A further solution is that a limit step is formed at the connection between the first guide section and the second guide section, and an adaptive gap is formed between the bottom wall of the guide slot and the limit step, and the limit step can cooperate with the bottom wall of the guide slot in the axial upper limit of the floating rod body.

[0014] A preferred solution is that the adaptive floating rod assembly includes an adaptive floating rod and a pressure block which are plugged and fixed along the axial direction of the adaptive floating rod assembly; the pressure-applying portion is located on the pressure block, the connecting portion is located on the adaptive floating rod, a portion of the floating rod main body is located on the adaptive floating rod, and another portion of the floating rod main body is located on the pressure block.

[0015] A further solution is that an insert portion is provided at one end of the pressure block connected to the adaptive floating rod, and an insert groove is provided at the axial end of the adaptive floating rod, and the insert portion and the insert groove are plugged in and matched along the axial direction of the adaptive floating rod assembly; a limiting groove is provided on the peripheral wall of the insert portion, and the limiting groove extends along the circumference of the insert portion, and a through hole is provided on the peripheral wall of the adaptive floating rod, and a fixing part is installed in the through hole, and the fixing part extends into the limiting groove after passing through the through hole, and the fixing part and the limiting groove are matched at the axial limit position of the adaptive floating rod.

[0016] To achieve the above-mentioned second purpose, the utility model provides a positioning device, including a manipulator and the above-mentioned rotor shrinkage pressure rod, the manipulator includes a support seat and at least two clamps, the multiple clamps are arranged along the circumference of the support seat, the positioning seat is fixedly connected to the support seat, and the clamps and the rotor shrinkage pressure rod are located on the same side of the support seat.

[0017] It can be seen that the adaptive rotor shrink-fitting pressure rod of the utility model is the core component for limiting the crankshaft when the pump body assembly and the rotor assembly are hot-pressed in during the compressor production process. By arranging a disc spring between the positioning seat and the adaptive floating rod assembly, the positioning seat can move along the axial direction of the adaptive floating rod assembly relative to the adaptive floating rod assembly. When the application part is subjected to pressure, the adaptive floating rod assembly can realize axial telescopic movement, thereby achieving an adaptive effect, and can adapt to the workpiece processing error and can be adjusted as needed. Because the disc spring assembly can generate a large elastic force, even if the deformation is very small, it can generate enough pressure to press the workpiece tightly, preventing the workpiece position from angular displacement during the production process, and can completely solve the poor rotor shrink-fit angle caused by the workpiece processing error, realize the rotor shrink-fit angle quality defect rate to zero, and reduce the scrap cost caused by the production of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of an embodiment of the positioning device of the utility model with some components hidden.

[0019] Figure 2 It is a cross-sectional view of an embodiment of the positioning device of the utility model with some components hidden.

[0020] Figure 3 It is a structural diagram of the rotor shrink-fit pressure rod in the embodiment of the positioning device of the utility model.

[0021] Figure 4 It is a structural exploded view of an embodiment of a rotor shrink-fit pressure rod of the utility model.

[0022] Figure 5 It is a cross-sectional view of an embodiment of a rotor shrink-fit pressure rod of the utility model.

[0023] Figure 6 This is a cross-sectional view of an embodiment of the utility model of a rotor shrink-fit pressure rod with the pressure block hidden.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0025] See also Figure 1 and Figure 2 The positioning device includes a manipulator 1 and a rotor shrink-fitting rod 2, the manipulator 1 includes a support seat 11 and at least two clamping jaws 12, a plurality of clamping jaws 12 are arranged along the circumference of the support seat 11, a positioning seat 4 of the rotor shrink-fitting rod 2 is fixedly connected to the support seat 11, and the clamping jaws 12 and the rotor shrink-fitting rod 2 are both located at the lower side of the support seat 11. Optionally, the number of the clamping jaws 12 in this embodiment is three, and the three clamping jaws 12 are evenly distributed along the circumference of the support seat 11.

[0026] See also Figures 2 to 6 The rotor shrink-fit rod 2 includes an adaptive floating rod assembly 3, a positioning seat 4 and a disc spring assembly 5.

[0027] The adaptive floating rod assembly 3 includes a floating rod main body 31, a pressure-applying part 32 and a connecting part 33. The pressure-applying part 32 and the connecting part 33 are respectively arranged at the two ends of the floating rod main body 31. A support step 34 is formed at the connection between the connecting part 33 and the floating rod main body 31. The positioning seat 4 is sleeved outside the connecting part 33 and can move axially relative to the adaptive floating rod assembly 3 along the adaptive floating rod assembly 3. The disc spring assembly 5 is sleeved outside the connecting part 33 and is squeezed between the positioning seat 4 and the support step 34.

[0028] A limiting member 6 is provided at one end of the connecting portion 33 away from the floating rod main body 31 . The limiting member 6 is a screw. The rod 61 of the screw is fixedly connected to the connecting portion 33 , and the head 62 of the screw is limitedly matched with the positioning seat 4 .

[0029] The elastic restoring force of the disc spring assembly 5 forces the positioning seat 4 to abut against the limiting member 6 along the axial direction of the adaptive floating rod assembly 3 .

[0030] The disc spring assembly 5 includes a first disc spring body 51 and a second disc spring body 52 arranged coaxially, at least one of the first disc spring body 51 and the second disc spring body 52 is more than two, and the first disc spring body 51 and the second disc spring body 52 are alternately arranged along the axial direction of the disc spring assembly 5. The first disc spring body 51 and the second disc spring body 52 are both conical disc-shaped, and a first opening 511 is provided at a first axial end of the first disc spring body 51, and a second opening 521 is provided at a first axial end of the second disc spring body 52. ​​The first openings 511 of the plurality of first disc spring bodies 51 are all oriented in the same direction, and the first openings 511 and the second openings 521 are arranged opposite to each other.

[0031] The positioning seat 4 is provided with a receiving groove 41, which is recessed from the first end wall of the positioning seat 4. The head 62 of the screw is located in the receiving groove 41. A gasket 7 is also provided in the receiving groove 41, and the gasket 7 is sleeved on the screw.

[0032] The positioning seat 4 is also provided with a guide slot 42 and a guide hole 43. The guide slot 42 is recessed from the second end wall of the positioning seat 4. The guide hole 43 connects the guide slot 42 and the receiving slot 41. The connecting portion 33 includes a first guide segment 331 and a second guide segment 332 arranged along the axial direction of the floating rod main body 31. The second guide segment 332 is connected between the floating rod main body 31 and the first guide segment 331. The second guide segment 332 and the guide slot 42 are slidably matched along the axial direction of the floating rod main body 31, and the first guide segment 331 and the guide hole 43 are slidably matched along the axial direction of the floating rod main body 31.

[0033] A limiting step 333 is formed at the connection between the first guide section 331 and the second guide section 332 , and an adaptive gap 8 is formed between the bottom wall 421 of the guide slot 42 and the limiting step 333 . The limiting step 333 can cooperate with the bottom wall of the guide slot 42 at the axial upper limit of the floating rod main body 31 .

[0034] The adaptive floating rod assembly 3 comprises an adaptive floating rod 301 and a pressure block 302 which are plugged and fixed along the axial direction of the adaptive floating rod assembly 3. The pressure-applying portion 32 is located on the pressure block 302, the connecting portion 33 is located on the adaptive floating rod 301, a part of the floating rod body 31 is located on the adaptive floating rod 301, and another part of the floating rod body 31 is located on the pressure block 302.

[0035] The end of the pressure block 302 connected to the adaptive floating rod 301 is provided with a plug-in portion 35, and the axial end of the adaptive floating rod 301 is provided with a plug-in slot 36. The plug-in portion 35 and the plug-in slot 36 are plugged and matched along the axial direction of the adaptive floating rod assembly 3. A limiting slot 351 is provided on the peripheral wall of the plug-in portion 35, and the limiting slot 351 extends along the circumference of the plug-in portion 35. A through hole 311 is provided on the peripheral wall of the adaptive floating rod 301, and a fixing member (not shown) is installed in the through hole 311. The fixing member passes through the through hole 311 and then extends into the limiting slot 351. The fixing member and the limiting slot 351 are matched in the axial limit position of the adaptive floating rod 301.

[0036] It can be seen that the adaptive rotor shrink-fitting pressure rod of the utility model is the core component for limiting the crankshaft when the pump body assembly and the rotor assembly are hot-pressed in during the compressor production process. By arranging a disc spring between the positioning seat and the adaptive floating rod assembly, the positioning seat can move along the axial direction of the adaptive floating rod assembly relative to the adaptive floating rod assembly. When the application part is subjected to pressure, the adaptive floating rod assembly can realize axial telescopic movement, thereby achieving an adaptive effect, which can adapt to the problem of not being pressed in place caused by the workpiece processing error, and can adapt to the workpiece processing error and can be adjusted as needed. Preferably, in this embodiment, the height of the adaptive gap is 2 mm, which can also adapt to the workpiece processing error of 2 mm. Because the disc spring assembly can generate a large elastic force, even if the deformation is very small, it can generate enough pressure to press the workpiece tightly, preventing the workpiece position from angular deviation during the production process, and can completely solve the poor rotor shrink-fit angle caused by the workpiece processing error, realize the rotor shrink-fit angle quality defect rate to zero, and reduce the scrap cost caused by the production of defective products.

[0037] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, 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. Rotor shrink-fitting rod, characterized in that: include: An adaptive floating rod assembly, the adaptive floating rod assembly comprising a floating rod main body, a pressure-applying part and a connecting part, the pressure-applying part and the connecting part are respectively arranged at two ends of the floating rod main body, and a support step is formed at the connection between the connecting part and the floating rod main body; A positioning seat, the positioning seat is sleeved outside the connecting portion and can move relative to the adaptive floating rod assembly along the axial direction of the adaptive floating rod assembly; A disc spring assembly, wherein the disc spring assembly is sleeved outside the connecting portion and is squeezed between the positioning seat and the supporting step; A limiting member is provided at one end of the connecting portion away from the main body of the floating rod, and the elastic restoring force of the disc spring assembly forces the positioning seat to abut against the limiting member along the axial direction of the adaptive floating rod assembly.

2. The rotor shrink-fitting rod according to claim 1, characterized in that: The disc spring assembly includes a first disc spring body and a second disc spring body arranged coaxially, the first disc spring body and the second disc spring body are both conical discs, a first opening is provided at the first axial end of the first disc spring body, and a second opening is provided at the first axial end of the second disc spring body, the first openings of the plurality of first disc spring bodies are all oriented in the same direction, and the first opening and the second opening are arranged opposite to each other.

3. The rotor shrink-fitting rod according to claim 2, characterized in that: The number of at least one of the first disc spring bodies and the second disc spring bodies is two or more, and the first disc spring bodies and the second disc spring bodies are alternately arranged along the axial direction of the disc spring assembly.

4. The rotor shrink-fitting rod according to any one of claims 1 to 3, characterized in that: The limiting member is a screw, the rod of the screw is fixedly connected to the connecting portion, and the head of the screw is limitedly matched with the positioning seat.

5. The rotor shrink-fitting rod according to claim 4, characterized in that: The positioning seat is provided with a receiving groove, the receiving groove is recessed from the first end wall of the positioning seat, the head of the screw is located in the receiving groove, a gasket is also provided in the receiving groove, and the gasket is sleeved on the screw.

6. The rotor shrink-fitting rod according to claim 5, characterized in that: The positioning seat is further provided with a guide slot and a guide hole, wherein the guide slot is recessed from the second end wall of the positioning seat, and the guide hole communicates with the guide slot and the receiving slot; The connecting portion comprises a first guide segment and a second guide segment arranged along the axial direction of the floating rod main body, wherein the second guide segment is connected between the floating rod main body and the first guide segment; The second guide section and the guide slot are slidably matched along the axial direction of the floating rod main body, and the first guide section and the guide hole are slidably matched along the axial direction of the floating rod main body.

7. The rotor shrink-fitting rod according to claim 6, characterized in that: A limiting step is formed at the connection between the first guide section and the second guide section, and an adaptive gap is formed between the bottom wall of the guide slot and the limiting step. The limiting step can cooperate with the bottom wall of the guide slot in the axial limit position of the floating rod main body.

8. The rotor shrink-fitting rod according to any one of claims 1 to 3, characterized in that: The adaptive floating rod assembly comprises an adaptive floating rod and a pressing block which are plugged and fixed along the axial direction of the adaptive floating rod assembly; The pressure-applying portion is located on the pressing block, the connecting portion is located on the adaptive floating rod, a portion of the floating rod body is located on the adaptive floating rod, and another portion of the floating rod body is located on the pressing block.

9. The rotor shrink-fitting rod according to claim 8, characterized in that: One end of the pressure block connected to the adaptive floating rod is provided with a plug-in portion, and the axial end of the adaptive floating rod is provided with a plug-in slot, and the plug-in portion and the plug-in slot are plug-fitted along the axial direction of the adaptive floating rod assembly; A limiting groove is provided on the peripheral wall of the plug-in part, and the limiting groove extends along the circumference of the plug-in part. A through hole is provided on the peripheral wall of the adaptive floating rod, and a fixing piece is installed in the through hole. The fixing piece extends into the limiting groove after passing through the through hole, and the fixing piece cooperates with the limiting groove in the axial upper limit position of the adaptive floating rod.

10. A positioning device, characterized in that: It comprises a manipulator and a rotor shrink-fit rod as claimed in any one of claims 1 to 9, wherein the manipulator comprises a support seat and at least two clamps, a plurality of clamps are arranged along the circumference of the support seat, the positioning seat is fixedly connected to the support seat, and the clamps and the rotor shrink-fit rod are located on the same side of the support seat.

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