Motor shell machining and positioning tool
By designing a positioning fixture for motor housing processing, the stability of the motor housing is ensured by using positioning bosses and clamping components, and the flatness is tested by an inflation tester. This solves the problem of insufficient stability between the motor housing and the fixture, and improves processing accuracy and yield.
Patent Information
- Application Number
- CN202511466844.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-12-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing technology, the stability between the motor housing and the fixture is insufficient, resulting in low machining accuracy and affecting the assembly of the motor housing with other components.
A positioning fixture for machining the motor housing is used. The stability of the motor housing is ensured by positioning bosses and clamping components. An inflation tester is used to check the flatness of the lower end face of the motor housing. Combined with the design of lateral limiting components and movable seats, the precise positioning and stabilization of the motor housing are achieved.
This improved the machining accuracy and stability of the motor housing, enhanced the assembly accuracy of the motor housing with other components, and increased the yield rate of finished products.
Smart Images
Figure CN121156791A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the motor shell processing technical field, especially to a motor shell processing positioning tool. BACKGROUND
[0002] At present, the processing of the motor shell is usually that the two end faces of the motor shell blank are first flattened by a general lathe, that is, a motor shell rough blank is made, then the motor shell rough blank is clamped and fixed by a special fixture, and is installed to a machining center for hole processing and precision machining of various assembly parts, so as to make a finished product.
[0003] In the prior art, the stability between the motor shell rough blank and the fixture affects the processing precision of the motor shell. If the reference bottom surface of the motor shell rough blank is not placed stably for subsequent processing, the special-shaped structure deviation on the workpiece will be caused, which affects the assembly of the motor shell and other parts, and therefore further improvement is needed. SUMMARY
[0004] In order to improve the processing precision of the motor shell and thus improve the processing yield of the motor shell, the present application provides a motor shell processing positioning tool.
[0005] The motor shell processing positioning tool provided by the present application adopts the following technical solution: A motor shell processing positioning tool, comprising a tool base, a positioning seat is arranged on the tool base, a positioning boss in the shape of a cylinder is fixedly arranged on the upper surface of the positioning seat, a detection protrusion is fixedly arranged on the upper surface of the positioning seat, the detection protrusion is arranged in multiple and is distributed at intervals around the positioning boss, the upper end surface of the detection protrusion is a first detection plane, the first detection plane is provided with a first detection air channel, the tool base is provided with an inflation detector for inflating and detecting the air pressure of the first detection air channel, the lower inner cavity of the motor shell is slidably sleeved on the positioning boss, the lower end surface of the motor shell abuts against the first detection plane, and the lower end surface of the motor shell blocks the passage opening of the first detection air channel, and the tool base is provided with a pressing assembly for pressing and fixing the motor shell.
[0006] By adopting the technical scheme, the motor shell is placed on the positioning seat, the positioning boss is inserted into the lower inner cavity of the motor shell, the lower end surface of the motor shell abuts against the first detection plane, the channel opening of the first detection air channel is blocked, the motor shell is pressed and fixed by the pressing assembly, the stability of the motor shell and the tooling is ensured, then the air pressure detection instrument is used to judge the fit of the lower end surface of the motor shell and the first detection plane, if the motor shell is not placed flat, a gap will appear between the first detection planes of the motor shell, the first detection air channel will leak, and the pressure value of the air pressure detection instrument is less than the preset value, the working condition of the motor shell needs to be checked again, if the pressure value of the air pressure detection instrument reaches the preset value, subsequent processing is performed, the processing precision of the motor shell is improved, and in addition, the first detection air channel also has the function of preliminarily detecting the flatness of the lower end of the motor shell.
[0007] Preferably, the lower part of the motor shell has a mounting flange, the mounting flange has a mounting hole, and the upper surface of the positioning seat protrudes and is fixed with a rotation stopping pin, the rotation stopping pin is inserted into the mounting hole.
[0008] By adopting the technical scheme, the mounting hole of the mounting flange cooperates with the rotation stopping pin on the positioning seat, which can prevent the motor shell from rotating during processing, and improve the stability and processing precision of the motor shell during processing.
[0009] Preferably, the pressing assembly comprises a pneumatic rotary cylinder and a pressing block, the cylinder body of the pneumatic rotary cylinder is fixedly connected to the tooling base, the pressing block is fixedly connected to the piston rod of the pneumatic rotary cylinder, and the pressing end of the pressing block abuts against the upper end surface of the mounting flange.
[0010] By adopting the technical scheme, in the initial state, the piston rod of the pneumatic rotary cylinder is elongated to drive the pressing block to lift up and rotate to the side away from the positioning seat, so as to facilitate the worker to place the motor shell on the positioning seat, after the motor shell is placed, the piston rod of the pneumatic rotary cylinder is retracted to drive the pressing block to move down and rotate, so that the pressing end of the pressing block abuts against the upper end surface of the mounting flange.
[0011] Preferably, the positioning platform protrudes and cooperates with the motor shell in a gap, the outer peripheral wall of the positioning boss is fixedly connected with a sealing ring abutting against the side wall of the lower inner cavity of the motor shell, the tooling base is provided with a lateral limiting assembly abutting against the outer peripheral wall of the mounting flange, and the lateral limiting assembly is provided with multiple groups and is uniformly distributed around the axis of the positioning boss.
[0012] By adopting the technical scheme, the positioning boss cooperates with the motor shell in a gap and is provided with a sealing ring, which can ensure the cooperation precision between the motor shell and the positioning boss; the multiple groups of lateral limiting assemblies uniformly distributed around the axis of the positioning boss abut against the outer peripheral wall of the mounting flange, and through the limiting action of the multiple groups of lateral limiting assemblies, the assembly stability of the motor shell and the positioning boss is ensured, and the processing precision of the motor shell is improved.
[0013] Preferably, each of the lateral limiting assemblies comprises a limiting seat fixedly connected to the tool base and a limiting bolt threadedly connected to the limiting seat, the limiting bolt abutting against the outer peripheral wall of the mounting flange.
[0014] By adopting the above technical scheme, the limiting bolt is abutted against the outer peripheral wall of the mounting flange by screwing the limiting bolt, so that the motor housing is laterally limited, thereby improving the machining precision of the motor housing.
[0015] Preferably, the limiting seat is slidably connected with a slide rod in the horizontal direction, one end of the slide rod is fixedly connected with a mounting block, the limiting bolt is threadedly provided in the mounting block, the upper end surface of the positioning boss is axially provided with a sliding cavity extending into the limiting seat, the positioning boss is provided with a movable seat slidably connected with the sliding cavity, the upper end surface of the movable seat abuts against the top wall of the lower inner cavity of the motor housing, the limiting seat is provided with an elastic member forcing the movable seat to move upward and protrude from the upper end surface of the positioning boss in the normal state, the outer sidewall of the limiting seat is vertically provided with a sliding groove communicating with the sliding cavity, the outer wall of the movable seat is fixedly connected with a connecting rod slidably provided in the sliding groove and located below the slide rod, a hinge rod is arranged between the connecting rod and the slide rod, one end of the hinge rod is hingedly connected with the connecting rod, the other end of the hinge rod is hingedly connected with the slide rod, and the slide rod, the connecting rod and the hinge rod are correspondingly arranged in number.
[0016] By adopting the above technical scheme, when the motor housing is installed, the movable seat is forced to move downward in the sliding cavity under the action of the top wall of the lower inner cavity of the motor housing, thereby driving the connecting rod to move downward, and then driving the slide rod to move toward the limiting seat through the hinge rod, so that the mounting block and the positioning screw rod move, the motor housing is placed while the limiting of the motor housing is realized, the installation efficiency of the motor housing is improved, and finally the motor housing is pressed and fixed by the pressing and fixing assembly.
[0017] Preferably, the lower passage opening of the first detection air channel extends to the lower end surface of the tool base, one end of the slide rod away from the limiting seat is fixedly connected with a linkage rod, the upper end surface of the tool base is provided with a through groove, the length direction of the through groove is parallel to the sliding direction of the slide rod, the linkage rod is slidably provided in the through groove, the lower end of the linkage rod is fixedly connected with a sealing plate sealing the lower passage opening of the first detection air channel, and the upper end surface of the sealing plate abuts against the lower end surface of the tool base.
[0018] By adopting the technical scheme, under normal circumstances, the spring forces the movable seat to move upwards beyond the upper end surface of the positioning boss, and the hinged rod pushes the sliding rod to slide away from the outside of the positioning seat, the sliding of the sliding rod to the outside through the linkage rod drives the sealing plate to slide to the outside of the lower passage opening of the first detection air channel, so that the lower passage opening of the first detection air channel is in an open state, and the powder falling into the first detection air channel is directly discharged from the lower passage opening; the motor shell is placed on the positioning seat, and the movable seat is forced to move downwards in the sliding cavity under the action of the top wall of the lower inner cavity of the motor shell, thereby driving the connecting rod to move downwards, and then the hinged rod drives the sliding rod to move towards the positioning seat, so that the mounting block and the positioning screw move, the motor shell is placed, and the positioning of the motor shell is realized, and the sealing plate blocks the lower passage opening of the first detection air channel, so that the motor shell is pressed and solidified, and the pneumatic detection all-in-one machine performs pressure detection on the first detection air channel.
[0019] Preferably, the lower inner cavity top wall of the motor shell coaxially protrudes and is fixed with a positioning sleeve, the movable seat comprises a movable sleeve connected to the sliding cavity and a detection core body coaxially and rotatably connected to the inner cavity of the movable sleeve, the upper end surface of the detection core body is a second detection plane, the second detection plane is flush with the upper end surface of the movable sleeve, the tool base is provided with a blanking hole communicated with the sliding cavity, the upper end surface of the detection core body is provided with a second detection air channel in the axial direction, the inner wall of the movable sleeve protrudes and is fixed with a blocking block below the detection core body, the upper end surface of the blocking block abuts against the lower end surface of the detection core body, the outer peripheral wall of the detection core body is provided with a first flow channel communicated with the second detection air channel, the outer wall of the movable sleeve is provided with a second flow channel communicated with the first flow channel, the outer side wall of the positioning seat is provided with a third flow channel, the tool base is provided with a pneumatic detection instrument for injecting gas and detecting the pressure of the third flow channel, the movable sleeve or the positioning seat is provided with a rotating member for driving the detection core body to rotate around the axis thereof, under normal circumstances, the second detection air channel and the blocking block are misaligned, and the second flow channel and the third flow channel are misaligned, so that the lower passage opening of the second detection air channel is communicated with the sliding cavity and the blanking hole, when the motor shell is assembled and fixed on the positioning seat, the lower end surface of the positioning sleeve abuts against the second detection plane and blocks the upper passage opening of the second detection air channel, the detection core body is rotated to the position where the second detection air channel and the blocking block are opposite, so that the blocking block blocks the lower passage opening of the second detection air channel, and the movable sleeve is moved downwards as a whole to the position where the third flow channel and the second flow channel are communicated.
[0020] By adopting the above technical scheme, the positioning sleeve is additionally arranged, the lower end surface of the positioning sleeve is flattened by a general lathe in advance, when the motor shell is assembled and fixed on the positioning seat, the lower end surface of the positioning sleeve abuts against the second detection plane and blocks the upper passage of the second detection air channel, the detection core body is rotated to the position opposite to the second detection air channel and the blocking block, so that the blocking block blocks the lower passage of the second detection air channel, the movable sleeve is integrally moved downward to the position where the third flow channel and the second flow channel are communicated, the inflation detector inflates and detects the air pressure of the third flow channel, whether the lower end surface of the positioning sleeve is flat can be judged according to the change of the air pressure, when the first detection air channel leaks and the second detection air channel does not leak, it indicates that the lower end surface of the motor shell is not flat, the motor shell roughing piece machining error occurs, and the workpiece needs to be replaced; when the first detection air channel and the second detection air channel both leak, it reminds the worker to adjust the position of the workpiece, and the workpiece is detected or replaced again, only when the first detection air channel and the second detection air channel do not leak, the subsequent machining operation is carried out. When the motor shell machining is completed, the motor shell is disassembled, the movable sleeve is integrally moved upward to reset so that the third flow channel and the second flow channel are misaligned, the detection core body is rotated to the position misaligned with the blocking block so that the lower passage of the second detection air channel is communicated with the sliding cavity and the blanking hole, and the first flow channel and the second flow channel are misaligned, when the second detection plane is cleaned, the powder falling into the second detection air channel is directly discharged from the lower passage, the sliding cavity and the blanking hole, preventing the powder from falling into the first flow channel, the second flow channel and the third flow channel to cause blockage.
[0021] Preferably, the sliding cavity inner wall is provided with a rotating guide groove and a straight guide groove located below the rotating guide groove, the rotating guide groove is spirally arranged, the straight guide groove and the lower part of the rotating guide groove are communicated, the rotating part includes a fixed rod fixedly connected to the lower end surface of the detection core body and a guide rod fixedly connected to the lower part of the outer wall of the fixed rod and located below the movable sleeve, and the guide rod is slidingly connected to the rotating guide groove and the straight guide groove.
[0022] By adopting the above technical scheme, during the downward movement of the movable sleeve relative to the positioning seat, the guide rod rotates the detection core body relative to the movable sleeve around the axis of the detection core body under the restriction of the spiral guide groove, so that the detection core body is rotated to the position opposite to the second detection air channel and the blocking block, the guide rod slides in the straight guide groove, and the detection core body does not rotate.
[0023] In summary, the present application has at least one of the following beneficial technical effects: 1. The motor housing is placed on the positioning seat, so that the positioning boss is inserted into the lower inner cavity of the motor housing, the lower end surface of the motor housing abuts against the first detection plane, and the channel opening of the first detection air channel is blocked, the motor housing is pressed and fixed by the pressing and fixing assembly, the stability of the motor housing and the tool is ensured, then the air pressure detection instrument is matched to judge the fit of the lower end surface of the motor housing and the first detection plane, if the motor housing is not placed flat, gaps will appear between the first detection planes of the motor housing, the first detection air channel will leak, and the pressure value of the air pressure detection instrument is less than the preset value, the working condition of the motor housing needs to be checked again, if the pressure value of the air pressure detection instrument reaches the preset value, subsequent processing is carried out, the machining precision of the motor housing is improved, and in addition, the first detection air channel also has the function of preliminarily detecting the flatness of the lower end of the motor housing; 2. A plurality of lateral limiting assemblies distributed around the positioning boss axis abut against the outer peripheral wall of the mounting flange, the limiting effect of the plurality of lateral limiting assemblies ensures the assembly stability of the motor housing and the positioning boss, and improves the machining precision of the motor housing; 3. When the motor housing is installed, the movable seat is forced to move downward in the sliding cavity under the action of the top wall of the lower inner cavity of the motor housing, so as to drive the connecting rod to move downward, and then drive the sliding rod to move towards the positioning seat through the hinged rod, so as to move the mounting block and the positioning screw, place the motor housing and realize the limiting of the motor housing, improve the installation efficiency of the motor housing, and finally press and fix the motor housing through the pressing and fixing assembly. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is the overall structure schematic diagram of a motor housing machining positioning tool in embodiment 1.
[0025] Figure 2 It is the structure schematic diagram of the lateral limiting assembly in embodiment 1.
[0026] Figure 3 It is the structure schematic diagram of the positioning seat in embodiment 1.
[0027] Figure 4 It is the structure schematic diagram of the lateral limiting assembly in embodiment 2.
[0028] Figure 5 It is the structure schematic diagram of the movable seat in embodiment 2.
[0029] Figure 6 It is the schematic diagram of the lower channel opening of the first detection air channel in embodiment 2 in an open state.
[0030] Figure 7 It is the structure schematic diagram of the movable seat in embodiment 3.
[0031] Figure 8is a structural schematic diagram of the first flow channel, the second flow channel and the third flow channel in Example 3.
[0032] Figure 9 is a structural schematic diagram of the inner wall of the sliding cavity in Example 3.
[0033] BRIEF DESCRIPTION OF DRAWINGS: 10, motor housing; 101, mounting flange; 102, mounting hole; 103, hole groove; 104, positioning sleeve; 1, tool base; 11, lifting ring; 12, through groove; 13, blanking hole; 2, positioning seat; 21, positioning boss; 22, detection protrusion; 23, first detection air channel; 24, anti-rotation pin; 25, sliding cavity; 251, rotary guide groove; 252, straight guide groove; 26, sliding groove; 27, spring; 28, third flow channel; 3, lateral limiting assembly; 31, limiting seat; 32, limiting bolt; 33, sliding rod; 34, mounting block; 35, linkage rod; 36, sealing plate; 4, pressing assembly; 41, pneumatic rotary cylinder; 42, pressing block; 5, movable seat; 51, connecting rod; 52, hinged rod; 53, movable sleeve; 531, sealing block; 532, second flow channel; 54, detection core; 541, second detection air channel; 542, first flow channel; 6, rotating piece; 61, fixed rod; 62, guide rod. DETAILED DESCRIPTION
[0034] The following will be described in detail in combination with the accompanying drawings. Figures 1-9 The application is further described in detail.
[0035] Example 1: The embodiments of the application disclose a motor housing machining and positioning tool, referring to Figure 1 , comprising a tool base 1, the upper end surface of the tool base 1 is fixedly connected with a positioning seat 2, in this embodiment, the positioning seat 2 is provided with two and is distributed along the length direction of the tool base 1, and the upper end surface of the tool base 1 is fixedly connected with a lifting ring 11 at four top corners.
[0036] Referring to Figure 2 , Figure 3The upper surface of the positioning seat 2 protrudes and is fixed with a positioning boss 21 in the form of a cylinder. The upper surface of the positioning seat 2 protrudes and is fixed with a detection protrusion 22. The detection protrusion 22 is provided with a plurality of detection protrusions 22 and is spaced around the positioning boss 21. The upper end surface of the detection protrusion 22 is a first detection plane. A first detection air channel 23 is formed in the first detection plane. The lower part of the motor housing 10 has a mounting flange 101. The lower end surface of the mounting flange 101 is flush with the lower end surface of the motor housing 10. The lower end surface of the motor housing 10 and the lower end surface of the mounting flange 101 are flattened by a lathe in advance. The mounting flange 101 has a mounting hole 102. In this embodiment, the mounting hole 102 is provided with three mounting holes 102 and is uniformly distributed around the axis of the motor housing 10. The upper surface of the positioning seat 2 protrudes and is fixed with a rotation stopping pin 24. The rotation stopping pin 24 is located between two adjacent detection protrusions 22. The rotation stopping pin 24 is inserted into the mounting hole 102 in a gap.
[0037] After the motor housing 10 is installed on the positioning seat 2, the lower end surface of the mounting flange 101 abuts against the first detection plane and blocks the passage of the first detection air channel 23. The tooling base 1 is externally connected to a gas filling and detection instrument (not shown in the figure) for detecting the first detection air channel 23. The gas filling and detection instrument is a gas filling and detection all-in-one machine. The outer wall of the positioning seat 2 has a gas hole interface connected to the first detection air channel 23. The gas valve of the gas filling and detection all-in-one machine is connected to the gas hole interface. The lower inner cavity of the motor housing 10 is slidably sleeved on the positioning boss 21. In this embodiment, the positioning boss 21 is in a gap fit with the motor housing 10. The outer peripheral wall of the positioning boss 21 is fixedly connected with a sealing ring abutting against the peripheral wall of the lower inner cavity of the motor housing 10.
[0038] The tooling base 1 is provided with a lateral limiting component 3 abutting against the peripheral wall of the mounting flange 101. In this embodiment, the lateral limiting component 3 is provided with three groups of lateral limiting components 3 and is uniformly distributed around the axis of the positioning boss 21. Each group of lateral limiting components 3 includes a limiting seat 31 fixedly connected to the upper end surface of the tooling base 1 and a limiting bolt 32 threadedly connected to the upper part of the limiting seat 31. By tightening the limiting bolt 32, the limiting bolt 32 abuts against the peripheral wall of the mounting flange 101.
[0039] The tool base 1 is provided with a pressing assembly 4 for pressing the motor housing 10. In the embodiment, the pressing assembly 4 is provided with two sets and is uniformly distributed around the axis of the positioning boss 21. Each set of the pressing assembly 4 includes a pneumatic rotary cylinder 41 and a pressing block 42. The cylinder body of the pneumatic rotary cylinder 41 is fixedly connected to the upper end face of the tool base 1. The pressing block 42 is fixedly connected to the piston rod of the pneumatic rotary cylinder 41. The pressing end of the pressing block 42 abuts against the upper end face of the mounting flange 101. The piston rod of the pneumatic rotary cylinder 41 rotates around its own axis during the extension and retraction process. In the initial state, the piston rod of the pneumatic rotary cylinder 41 is extended to drive the pressing block 42 to lift and rotate to the side away from the positioning seat 2, thereby facilitating the worker to place the motor housing 10 on the positioning seat 2. After the motor housing 10 is placed, the piston rod of the pneumatic rotary cylinder 41 is retracted to drive the pressing block 42 to move downward and rotate the pressing block 42, so that the pressing end of the pressing block 42 abuts against the upper end face of the mounting flange 101 to press the motor housing 10.
[0040] The implementation principle of the embodiment 1 is as follows. The tool base 1 is installed on the machining center. The motor housing 10 is placed on the positioning seat 2. The positioning boss 21 is inserted into the lower inner cavity of the motor housing 10, and the anti-rotation pin 24 is inserted into one of the mounting holes 102. The lower end face of the mounting flange 101 abuts against the first detection plane. The limiting bolt 32 is screwed to abut against the outer peripheral wall of the mounting flange 101 to laterally limit the motor housing 10 and reduce the possibility of horizontal movement of the motor housing 10. Then, the piston rod of the pneumatic rotary cylinder 41 is retracted to drive the pressing block 42 to move downward and rotate the pressing block 42, so that the pressing end of the pressing block 42 abuts against the upper end face of the mounting flange 101 to press the motor housing 10. Subsequently, the first detection air channel 23 is inflated in cooperation with the inflation detection all-in-one machine. The abutting condition of the lower end face of the motor housing 10 and the first detection plane is judged by air pressure detection. If the motor housing 10 is not placed flat, a gap will appear between the first detection planes of the motor housing 10, the first detection air channel 23 will leak, the pressure value of the inflation detector will be less than the preset value, and the installation condition of the motor housing 10 needs to be rechecked or the motor housing 10 needs to be replaced. If the pressure value of the inflation detector reaches the preset value, subsequent processing is performed to improve the processing precision of the motor housing 10.
[0041] Embodiment 2 The difference between the embodiment 1 and the embodiment 2 is that the Figure 4 , Figure 5The limiting seat 31 is slidably connected with a slide rod 33 in a horizontal direction, one end of the slide rod 33 is fixedly connected with a mounting block 34, and the limiting bolt 32 is threadedly arranged in the mounting block 34. The upper end surface of the positioning boss 21 is axially provided with a sliding cavity 25 extending from the limiting seat 2, the positioning boss 21 is provided with a movable seat 5 slidably arranged in the sliding cavity 25, and the upper end surface of the movable seat 5 abuts against the top wall of the lower inner cavity of the motor shell 10. The outer side wall of the limiting seat 2 is vertically provided with a sliding groove 26 communicating with the sliding cavity 25, and the outer wall of the movable seat 5 is fixedly connected with a connecting rod 51 slidably arranged in the sliding groove 26 and located below the slide rod 33. A hinged rod 52 is arranged between the connecting rod 51 and the slide rod 33, one end of the hinged rod 52 is hingedly connected with the connecting rod 51, the other end of the hinged rod 52 is hingedly connected with one end of the slide rod 33 close to the limiting seat 2, and the slide rod 33, the connecting rod 51 and the hinged rod 52 are correspondingly arranged. The limiting seat 2 is provided with an elastic member which forces the movable seat 5 to move upwards and protrude from the upper end surface of the positioning boss 21 in a normal state, specifically, the elastic member is a spring 27 arranged in the sliding groove 26, one end of the spring 27 is fixedly connected with the inner wall of the sliding groove 26, and the other end of the spring 27 is fixedly connected with the connecting rod 51.
[0042] With reference to Figure 4 , Figure 6 , the lower passage opening of the first detection air channel 23 extends from the lower end surface of the tool base 1, one end of the slide rod 33 away from the limiting seat 2 is fixedly connected with a linkage rod 35, the upper end surface of the tool base 1 is provided with a through groove 12, the length direction of the through groove 12 is parallel to the sliding direction of the slide rod 33, the linkage rod 35 is slidably arranged in the through groove 12, and the lower end of the linkage rod 35 is fixedly connected with a sealing plate 36 for sealing the lower passage opening of the first detection air channel 23, and the upper end surface of the sealing plate 36 abuts against the lower end surface of the tool base 1.
[0043] The implementation principle of the embodiment 2 is that in a normal state, the spring 27 forces the movable seat 5 to move upwards and protrude from the upper end surface of the positioning boss 21, and the hinged rod 52 pushes the slide rod 33 to slide away from the limiting seat 2, the slide rod 33 slides outward to drive the linkage rod 35 to slide the sealing plate 36 to the outside of the lower passage opening of the first detection air channel 23, so that the lower passage opening of the first detection air channel 23 is in an open state, and the dust falling into the first detection air channel 23 can be directly discharged from the lower passage opening; the motor shell 10 is placed on the limiting seat 2, and the movable seat 5 is forced to move downwards in the sliding cavity 25 under the action of the top wall of the lower inner cavity of the motor shell 10, thereby driving the connecting rod 51 to move downwards, and then driving the slide rod 33 to move towards the limiting seat 2 through the hinged rod 52, so as to move the mounting block 34 and the limiting screw rod, and the motor shell 10 is placed and limited at the same time, and the sealing plate 36 seals the lower passage opening of the first detection air channel 23, so as to facilitate the air pressure detection of the first detection air channel 23 by the air pressure detection all-in-one machine after the motor shell 10 is pressed and fixed.
[0044] Embodiment 3: Further, with reference to Figure 7 , Figure 8 , Figure 9 The lower inner cavity top wall of the motor housing 10 is coaxially protrudingly fixed with a positioning sleeve 104, the lower end surface of the positioning sleeve 104 is flattened by a lathe in advance, and the upper inner cavity bottom wall of the motor housing 10 has a plurality of hole grooves 103 communicated with the lower inner cavity. The movable seat 5 includes a movable sleeve 53 slidably connected to the sliding cavity 25 and a detection core 54 coaxially and rotatably connected to the upper portion of the inner cavity of the movable sleeve 53, and the connecting rod 51 is fixedly connected to the outer wall of the movable sleeve 53. The upper end surface of the detection core 54 is a second detection plane which is flush with the upper end surface of the movable sleeve 53.
[0045] The movable sleeve 53 or the positioning seat 2 is provided with a rotating member 6 for driving the detection core 54 to rotate around its own axis. In this embodiment, the inner wall of the sliding cavity 25 is provided with a rotating guide groove 251 and a straight guide groove 252 located below the rotating guide groove 251. The rotating guide groove 251 is spirally arranged, and the straight guide groove 252 is communicated with the lower portion of the rotating guide groove 251. The rotating member 6 includes a fixed rod 61 fixedly connected to the lower end surface of the detection core 54 and a guide rod 62 fixedly connected to the lower outer wall of the fixed rod 61 and located below the movable sleeve 53. The guide rod 62 is slidably connected to the rotating guide groove 251 and the straight guide groove 252. During the downward movement of the movable sleeve 53 relative to the positioning seat 2, the guide rod 62 is limited by the spiral guide groove to rotate the detection core 54 relative to the movable sleeve 53 around its own axis. The guide rod 62 slides in the straight guide groove 252, and the detection core 54 does not rotate.
[0046] The tool base 1 is provided with a blanking hole 13 communicated with the sliding cavity 25, and the upper end surface of the detection core 54 is axially provided with a second detection air channel 541. The inner peripheral wall of the movable sleeve 53 is protrudingly fixed with a plugging block 531 located below the detection core 54, and the upper end surface of the plugging block 531 abuts against the lower end surface of the detection core 54. The outer peripheral wall of the detection core 54 is radially provided with a first flow channel 542 communicated with the second detection air channel 541, the outer wall of the movable sleeve 53 is radially provided with a second flow channel 532 communicated with the first flow channel 542, and the outer side wall of the positioning seat 2 is radially provided with a third flow channel 28. The tool base 1 is externally provided with a gas filling and detection instrument for the third flow channel 28. The gas filling and detection instrument is a gas filling and detection all-in-one machine, and the gas valve of the gas filling and detection all-in-one machine is connected to the third flow channel 28.
[0047] The implementation principle of the embodiment 3 is that: under normal circumstances, the second detection plane protrudes from the upper end surface of the positioning boss 21, the second detection air channel 541 and the blocking block 531 are misaligned, the first flow channel 542 and the second flow channel 532 are misaligned, the second flow channel 532 and the third flow channel 28 are misaligned, so that the lower passage opening of the second detection air channel 541 is communicated with the sliding cavity 25 and the material falling hole 13, and the powder falling into the second detection air channel 541 is directly discharged from the lower passage opening, the sliding cavity 25 and the material falling hole 13, preventing the powder from falling into the first flow channel 542, the second flow channel 532 and the third flow channel 28 to cause blockage; when the motor shell 10 is assembled and fixed on the positioning seat 2, the movable sleeve 53 moves downward relative to the positioning seat 2, the guide rod 62 is limited by the spiral guide groove to realize the rotation of the detection core 54 relative to the movable sleeve 53 around the axis of the detection core 54, so that the detection core 54 is rotated to the position where the second detection air channel 541 and the blocking block 531 are opposite to each other, so that the blocking block 531 blocks the lower passage opening of the second detection air channel 541, and the first flow channel 542 and the second flow channel 532 are communicated, the movable sleeve 53 continues to move downward to drive the guide rod 62 to slide in the straight guide groove 252, the detection core 54 does not rotate, and when the lower end surface of the mounting flange 101 abuts against the first detection plane, the third flow channel 28 and the second flow channel 532 are communicated, the air charging detection all-in-one machine is matched to charge air to the third flow channel 28, and the air pressure detection is used to judge the adhesion of the lower end surface of the positioning sleeve 104 to the second detection plane: when the first detection air channel 23 or the second detection air channel 541 leaks, the worker is reminded to adjust the position of the workpiece and detect again or replace the workpiece, and only when the first detection air channel 23 and the second detection air channel 541 do not leak, the subsequent operation is performed.
[0048] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A positioning fixture for machining a motor housing, characterized in that: The fixture includes a tooling base (1), on which a positioning seat (2) is provided. A positioning boss (21) in the shape of a cylinder is fixedly protruded from the upper surface of the positioning seat (2). A detection protrusion (22) is fixedly protruded from the upper surface of the positioning seat (2). Multiple detection protrusions (22) are provided and are distributed at intervals around the positioning boss (21). The upper end face of the detection protrusion (22) is a first detection plane. A first detection air passage (23) is opened on the first detection plane. The tooling base (1) is provided with an inflation tester for injecting air and detecting air pressure in the first detection air passage (23). The lower inner cavity of the motor housing (10) is slidably fitted onto the positioning boss (21). The lower end face of the motor housing (10) abuts against the first detection plane and the lower end face of the motor housing (10) blocks the passage opening of the first detection air passage (23). The tooling base (1) is provided with a pressing component (4) for pressing the motor housing (10).
2. The positioning fixture for machining a motor housing according to claim 1, characterized in that: The lower part of the motor housing (10) has a mounting flange (101), the mounting flange (101) has a mounting hole (102), and the upper surface of the positioning seat (2) is fixed with an anti-rotation pin (24), which is inserted into the mounting hole (102).
3. The positioning fixture for machining a motor housing according to claim 2, characterized in that: The clamping assembly (4) includes a pneumatic rotary cylinder (41) and a clamping block (42). The cylinder body of the pneumatic rotary cylinder (41) is fixedly connected to the tooling base (1), and the clamping block (42) is fixedly connected to the piston rod of the pneumatic rotary cylinder (41). The clamping end of the clamping block (42) abuts against the upper end face of the mounting flange (101).
4. The positioning fixture for machining a motor housing according to claim 2, characterized in that: The positioning platform protrusion and the motor housing (10) are fitted with a clearance. The outer peripheral wall of the positioning platform (21) is fixedly connected with a sealing ring that abuts against the lower inner cavity side wall of the motor housing (10). The tooling base (1) is provided with a lateral limiting component (3) that abuts against the outer peripheral wall of the mounting flange (101). Multiple sets of lateral limiting components (3) are provided and are evenly distributed around the axis of the positioning platform (21).
5. The positioning fixture for machining a motor housing according to claim 4, characterized in that: Each of the lateral limiting components (3) includes a limiting seat (31) fixedly connected to the tooling base (1) and a limiting bolt (32) threadedly connected to the limiting seat (31), the limiting bolt (32) abutting against the outer peripheral wall of the mounting flange (101).
6. The positioning fixture for machining a motor housing according to claim 5, characterized in that: The limiting seat (31) is slidably connected to a sliding rod (33) in the horizontal direction. One end of the sliding rod (33) is fixedly connected to a mounting block (34). The limiting bolt (32) is threaded through the mounting block (34). The upper end face of the positioning boss (21) is provided with a sliding cavity (25) extending into the positioning seat (2) in the axial direction. The positioning boss (21) is provided with a movable seat (5) slidably connected to the sliding cavity (25). The upper end face of the movable seat (5) abuts against the top wall of the lower inner cavity of the motor housing (10). The positioning seat (2) is provided with a feature that forces the movable seat (5) to move upward and protrude outward under normal conditions. The upper end face of the positioning boss (21) is elastic. The outer side wall of the positioning seat (2) is vertically provided with a sliding groove (26) that connects to the sliding cavity (25). The outer wall of the movable seat (5) is fixedly connected with a connecting rod (51) that slides through the sliding groove (26) and is located below the sliding rod (33). A hinge rod (52) is provided between the connecting rod (51) and the sliding rod (33). One end of the hinge rod (52) is hinged to the connecting rod (51), and the other end of the hinge rod (52) is hinged to the sliding rod (33). The number of sliding rods (33), connecting rods (51) and hinge rods (52) are correspondingly provided.
7. The positioning fixture for machining a motor housing according to claim 6, characterized in that: The lower channel opening of the first detection airway (23) extends to the lower end face of the tooling base (1). The end of the slide rod (33) away from the positioning seat (2) is fixedly connected to the linkage rod (35). The upper end face of the tooling base (1) is provided with a through groove (12). The length direction of the through groove (12) is parallel to the sliding direction of the slide rod (33). The linkage rod (35) slides through the through groove (12). The lower end of the linkage rod (35) is fixedly connected to a sealing plate (36) to block the lower channel opening of the first detection airway (23). The upper end face of the sealing plate (36) abuts against the lower end face of the tooling base (1).
8. The positioning fixture for machining a motor housing according to claim 6, characterized in that: The lower inner wall of the motor housing (10) is coaxially protruding and fixed with a positioning sleeve (104). The movable seat (5) includes a movable sleeve (53) slidably connected to the sliding cavity (25) and a detection core (54) coaxially rotatably connected to the inner cavity of the movable sleeve (53). The upper end face of the detection core (54) is a second detection plane and the second detection plane is flush with the upper end face of the movable sleeve (53). The tooling base (1) is provided with a material drop hole (13) communicating with the sliding cavity (25). The detection core (54) The upper end face of the detector core (54) is provided with a second detection air passage (541) through which the detector core (54) is axially extended. The inner wall of the movable sleeve (53) is fixed with a blocking block (531) located below the detector core (54). The upper end face of the blocking block (531) abuts against the lower end face of the detector core (54). The outer peripheral wall of the detector core (54) is provided with a first flow channel (542) communicating with the second detection air passage (541). The outer wall of the movable sleeve (53) is provided with a second flow channel (532) communicating with the first flow channel (542). Positioning seat (2) A third flow channel (28) is provided on the outer wall. The tooling base (1) is equipped with an inflation tester for injecting air and testing the air pressure of the third flow channel (28). The movable sleeve (53) or positioning seat (2) is equipped with a rotating part (6) that drives the detection core (54) to rotate around its own axis. Under normal conditions, the second detection air channel (541) and the sealing block (531) are misaligned, and the second flow channel (532) and the third flow channel (28) are misaligned, so that the lower channel opening of the second detection air channel (541) is connected to the sliding cavity (25) and the falling... When the motor housing (10) is assembled and fixed on the positioning seat (2), the lower end face of the positioning sleeve (104) abuts against the second detection plane and blocks the upper channel opening of the second detection air passage (541). The detection core (54) rotates to the position where the second detection air passage (541) and the blocking block (531) are directly opposite each other, so that the blocking block (531) blocks the lower channel opening of the second detection air passage (541). The movable sleeve (53) moves down to the third flow channel (28) and connects with the second flow channel (532).
9. A positioning fixture for machining a motor housing according to claim 8, characterized in that: The inner wall of the sliding cavity (25) is provided with a rotating guide groove (251) and a straight guide groove (252) located below the rotating guide groove (251). The rotating guide groove (251) is spirally arranged. The lower part of the straight guide groove (252) and the rotating guide groove (251) are connected. The rotating component (6) includes a fixed rod (61) fixedly connected to the lower end face of the detection core (54) and a guide rod (62) fixedly connected to the lower outer wall of the fixed rod (61) and located below the movable sleeve (53). The guide rod (62) is slidably connected to the rotating guide groove (251) and the straight guide groove (252).