Precision turning equipment for motor commutators

Abstract

This invention provides a precision turning equipment for motor commutators, comprising the following structure: a frame, wherein a mounting bracket and a slide rail are fixedly mounted on the rear and front sides of the top of the frame, respectively; a first tapered sleeve is movably connected to the middle of the top of the mounting bracket; a second tapered sleeve, wherein a toothed groove is fixedly mounted on the outer side of the front end of the second tapered sleeve, and a positioning tube is fixedly mounted in the middle of the second tapered sleeve; a ball bearing is sleeved on the inner side of the rear end of the positioning tube; the ball bearing, cooling pipe, return pipe, and mold temperature controller cooperate to facilitate the ball bearing to cool down the commutator blank after cutting, avoiding the problem of thermal deformation of the commutator blank during the slit cutting operation; this equipment performs a single-pass double-slit symmetrical cutting operation on the commutator blank, solving the technical problem of insufficient heat dissipation and cooling treatment of existing commutator blank cutting.

Description

Technical Field

[0001] This invention relates to the field of metal cutting, specifically to a precision turning equipment for motor commutators. Background Technology

[0002] The commutator of the motor is slotted using a removal device. When machining it on a traditional lathe, the commutator blank needs to be fixed on the lathe in advance, and a cutting tool is used to cut a slit on the nose surface of the commutator blank.

[0003] An existing patent (publication number: CN106270688A) discloses an automatic milling machine for commutator carbon surfaces, including a table, a slide rail, and a drive motor. A slide rail is horizontally arranged on the table, and a sliding plate is arranged on the slide rail. A material transfer cylinder is horizontally connected to one end of the sliding plate, and a rotary cylinder is mounted on the table at the other end. A lifting manipulator mechanism is mounted on the upper end of the rotary cylinder. A servo drive base is horizontally slidably mounted on the upper side of the sliding plate, and a servo indexing shaft clamping cylinder is mounted on the upper end of the servo drive base. A feed cylinder is horizontally connected to the servo drive base on the same side as the material transfer cylinder. A drive motor is mounted on one side of the sliding plate, and a cutting blade located above the servo drive base is mounted on one end of the drive motor. A material channel is mounted on the other side of the sliding plate, and a feeding mechanism is mounted at the lower end of the material channel. This invention has automatic feeding, cutting, and unloading functions, a high degree of automation, and uses a closed-loop stepper motor for precise indexing rotation, greatly improving processing accuracy and production efficiency.

[0004] In implementing this solution, the inventor found that in the prior art, the feed cylinder moves to push the servo drive base and the servo indexing shaft clamping cylinder towards the cutting blade, which then cuts the carbon plane of the commutator. The servo indexing shaft clamping cylinder then rotates at an angle and moves towards the cutting blade again for another cut. After several cuts, the lifting robot arm removes the finished product and unloads it. However, no heat dissipation and cooling treatment is performed on the commutator blank during the slit cutting process, which poses a risk of thermal deformation to the commutator blank during the cutting operation and affects the yield of the commutator blank. Summary of the Invention

[0005] 1. The problem the invention aims to solve:

[0006] The present invention provides a precision turning equipment for motor commutators, which solves the technical problem mentioned in the background art of insufficient heat dissipation and cooling treatment of existing commutator blanks during cutting.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by the present invention is: a precision turning equipment for motor commutators, comprising the following structure:

[0009] A platform, wherein a mounting bracket and a slide rail are fixedly mounted on the rear and front sides of the top of the platform, respectively, and a first conical sleeve is movably connected to the middle of the top of the mounting bracket.

[0010] The second conical sleeve has a toothed groove fixed on the outer front end and a positioning tube fixed in the middle. The balloon is sleeved on the inner rear end of the positioning tube.

[0011] Furthermore, a guide frame is fixedly provided at the rear end of the mounting bracket, an electric push rod is fixedly provided at the rear end of the guide frame, a motor frame is fixedly provided at the rear end of the electric push rod, a deflection motor is fixedly provided in the middle of the motor frame, the center of the shaft of the deflection motor is kept in the same axial direction as the center of the first tapered sleeve, a sleeve is fixedly provided at the output end of the deflection motor, a return spring is fixedly provided on the inner side of the left and right ends of the sleeve, a ball joint is fixedly provided at the top of the return spring, and the bottom of the ball joint is sleeved with the middle of the sleeve.

[0012] Furthermore, a sliding sleeve is slidably connected to the outer side of the guide frame, and a connecting rod is movably connected to both the left and right ends of the sliding sleeve. The connecting rod is arranged in a scissor-like structure on the outer side of the sliding sleeve. The top end of the connecting rod is movably connected to the top of the ball joint rod. A fixing frame is fixedly provided at the bottom of the connecting rod. A cutting motor is fixedly provided on the outer side of the fixing frame. An extension shaft is fixedly provided at the output end of the cutting motor. A cutting blade is fixedly provided on the outer side of the extension shaft.

[0013] Furthermore, a lead screw is movably connected to the middle of the slide rail, and a displacement motor is fixedly mounted at the front end of the lead screw. The outer side of the displacement motor is fixedly connected to the front end of the slide rail, and a slide block is threadedly connected to the outer side of the lead screw. The bottom of the slide block is slidably connected to the top of the slide rail.

[0014] Furthermore, the inner side of the top of the slide block is movably connected to the outer side of the front end of the second cone sleeve. The outer side of the slide block is fixedly provided with a mating interface. The bottom of the slide block is fixedly provided with a drive motor. The output end of the drive motor is fixedly provided with a reducer. The output end of the reducer is fixedly provided with a spur gear. The top of the spur gear extends to the inner side of the top of the slide block. The top of the spur gear meshes with the bottom of the second cone sleeve.

[0015] Furthermore, a limiting spring is fixedly provided on the inner side of the front end of the positioning tube, and a truss is fixedly provided on the rear end of the limiting spring. The rear end of the truss is fixedly connected to the front end of the balloon. A limiting rope is fixedly provided on the front end of the truss. The front end of the limiting rope extends to the outer side of the front end of the positioning tube, and the front end of the limiting rope is fixedly connected to the outer side of the slide rail.

[0016] Furthermore, a cooling pipe and a return pipe are fixedly provided at the top and bottom of the front end of the balloon, respectively. The rear end of the return pipe extends to the inner side of the rear end of the balloon. A cooling extension pipe is fixedly provided at the front end of the cooling pipe and is fixedly connected to the output end of the mold temperature controller. A return extension pipe is fixedly provided at the front end of the return pipe and is fixedly connected to the return port of the mold temperature controller.

[0017] Furthermore, the center of the second tapered sleeve is aligned with the center of the first tapered sleeve along the same axial direction, and the rear end of the second tapered sleeve is fitted with a commutator blank, the rear end of which is fitted with the front end of the first tapered sleeve.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0020] This invention provides a precision turning equipment for motor commutators, which uses a ball, cooling pipe, return pipe and mold temperature controller to facilitate the cooling of the commutator blank after cutting, avoiding thermal deformation of the commutator blank during the cutting operation. The cutting operation of the commutator blank by this equipment is a single double-slit symmetrical cutting process.

[0021] This invention provides a precision turning equipment for motor commutators. The positioning tube cooperates with the ball bearing. When the slide moves to the front end of the slide rail to perform loading and unloading operations of the commutator blank, it is convenient for the user to put the commutator blank on the outside of the ball bearing, avoiding the need for the worker to approach the cutting blade to perform loading and unloading operations of the commutator blank, thus achieving the pre-fixation of the commutator blank.

[0022] This invention provides a precision turning device for motor commutators. The connecting rods are arranged in a scissor-like structure outside the sliding sleeve. By driving the deflection of the sleeve through a deflection motor, the working positions of the two connecting rods on the left and right sides of the sliding sleeve are changed. This completes the symmetrical adjustment of the cutting blades at the bottom of the connecting rods with respect to the center of the commutator blank, avoiding the matching problem when using two sets of drive sources to adjust the upper and lower cutting blades of the commutator blank, and improving the cutting accuracy of the commutator blank by this device.

[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0024] Figure 1 This is a perspective view of the novel structure of the present invention;

[0025] Figure 2 This is a perspective view of the novel guide frame structure of the present invention;

[0026] Figure 3 This is a half-sectional perspective view of the novel first conical sleeve structure of the present invention;

[0027] Figure 4 The novel invention Figure 3 Enlarged view of the structure at point A in the middle;

[0028] Figure 5 This is a half-sectional perspective view of the novel second conical sleeve structure of the present invention;

[0029] Figure 6 This is a half-sectional perspective view of the novel balloon structure of the present invention.

[0030] Figure label:

[0031] Stand-1;

[0032] Mounting bracket-2; First cone sleeve-21;

[0033] Slide rail-3; Lead screw-31; Shift motor-32; Slide block-33; Drive motor-34; Reducer-35; Flat gear-36;

[0034] Second conical sleeve -4;

[0035] Positioning tube-5; Truss-51; Limiting spring-52; Limiting rope-53;

[0036] Balloon-6; Cooling pipe-61; Return pipe-62;

[0037] Guide frame-7; Electric actuator-71; Motor frame-72; Deflection motor-73; Sleeve-74; Return spring-75; Ball joint rod-76;

[0038] Sliding sleeve-8; Connecting rod-81; Fixing bracket-82; Cutting motor-83; Extension shaft-84; Cutting blade-85. Detailed Implementation

[0039] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0042] Reference Figure 1-6 A precision turning machine for motor commutators, comprising the following structure:

[0043] The platform 1 has a mounting bracket 2 and a slide rail 3 fixedly mounted on its top rear side and front side, respectively. The top center of the mounting bracket 2 is movably connected to a first cone sleeve 21.

[0044] The second conical sleeve 4 has a toothed groove fixed on the outer front end and a positioning tube 5 fixed in the middle. The balloon 6 is sleeved on the inner rear end of the positioning tube 5.

[0045] In this embodiment, as Figure 1 , Figure 3 and Figure 4 As shown, a guide frame 7 is fixedly mounted at the rear end of the mounting frame 2, an electric push rod 71 is fixedly mounted at the rear end of the guide frame 7, a motor frame 72 is fixedly mounted at the rear end of the electric push rod 71, a deflection motor 73 is fixedly mounted in the middle of the motor frame 72, the center of the shaft of the deflection motor 73 is kept in the same axial direction as the center of the first tapered sleeve 21, a sleeve 74 is fixedly mounted at the output end of the deflection motor 73, a return spring 75 is fixedly mounted on the inner side of the left and right ends of the sleeve 74, a ball joint rod 76 is fixedly mounted on the top of the return spring 75, and the bottom of the ball joint rod 76 is sleeved with the middle of the sleeve 74.

[0046] The electric actuator 71, in conjunction with the motor frame 72, changes the working position of the deflection motor 73 within the guide frame 7. Through the deflection motor 73, sleeve 74, ball joint rod 76, and connecting rod 81, the working position of the sliding sleeve 8 on the guide frame 7 is adjusted, and the cutting blade 85 moves axially along the commutator blank.

[0047] The deflection motor 73 drives the sleeve 74 to deflect on the lower motor frame 72. The return spring 75 cooperates with the ball joint rod 76 to change the deflection angle of the connecting rod 81 outside the sliding sleeve 8, thereby changing the working distance between the cutting blade 85 and the commutator blank and realizing the cutting treatment of the commutator blank by this equipment.

[0048] In this embodiment, as Figure 1 , Figure 3 and Figure 4As shown, a sliding sleeve 8 is slidably connected to the outer side of the guide frame 7. A connecting rod 81 is movably connected to both the left and right ends of the sliding sleeve 8. The connecting rod 81 is arranged in a scissor-like structure on the outer side of the sliding sleeve 8. The top end of the connecting rod 81 is movably connected to the top of the ball joint rod 76. A fixing frame 82 is fixedly provided at the bottom of the connecting rod 81. A cutting motor 83 is fixedly provided on the outer side of the fixing frame 82. An extension shaft 84 is fixedly provided at the output end of the cutting motor 83. A cutting blade 85 is fixedly provided on the outer side of the extension shaft 84.

[0049] The connecting rod 81 is arranged in a scissor-like structure on the outside of the sliding sleeve 8. The deflection motor 73 drives the sleeve 74 to deflect, changing the working position of the two connecting rods 81 on the left and right sides of the sliding sleeve 8. This completes the symmetrical adjustment of the cutting blade 85 at the bottom of the connecting rod 81 with respect to the center of the commutator blank, avoiding the matching problem when using two sets of drive sources to adjust the upper and lower cutting blades 85 of the commutator blank, and improving the cutting accuracy of the commutator blank by this equipment.

[0050] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a lead screw 31 is movably connected to the middle of the slide rail 3. A displacement motor 32 is fixedly installed at the front end of the lead screw 31. The outer side of the displacement motor 32 is fixedly connected to the front end of the slide rail 3. A slide block 33 is threadedly connected to the outer side of the lead screw 31. The bottom of the slide block 33 is slidably connected to the top of the slide rail 3.

[0051] The shift motor 32, in conjunction with the lead screw 31, changes the working position of the slide block 33 on the slide rail 3, thereby adjusting the working position between the second cone sleeve 4 and the first cone sleeve 21. This allows the second cone sleeve 4 and the first cone sleeve 21 to work together to clamp and position the commutator blank. The first cone sleeve 21 and the second cone sleeve 4 extend into the inner rear end and inner front end of the commutator blank, respectively.

[0052] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, the inner side of the top of the slide block 33 is movably connected to the outer side of the front end of the second cone sleeve 4. The outer side of the slide block 33 is fixedly provided with a mating interface. The bottom of the slide block 33 is fixedly provided with a drive motor 34. The output end of the drive motor 34 is fixedly provided with a reducer 35. The output end of the reducer 35 is fixedly provided with a spur gear 36. The top of the spur gear 36 extends to the inner side of the top of the slide block 33. The top of the spur gear 36 meshes with the bottom of the second cone sleeve 4.

[0053] The drive motor 34, reducer 35, and spur gear 36 engage with the tooth groove on the second cone sleeve 4, driving the second cone sleeve 4 to rotate on the top of the slide block 33, thus completing the rotational processing of the second cone sleeve 4 and the first cone sleeve 21 to clamp the commutator blank.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a limiting spring 52 is fixedly installed on the inner side of the front end of the positioning tube 5. A truss 51 is fixedly installed at the rear end of the limiting spring 52. The rear end of the truss 51 is fixedly connected to the front end of the balloon 6. A limiting rope 53 is fixedly installed at the front end of the truss 51. The front end of the limiting rope 53 extends to the outer side of the front end of the positioning tube 5. The front end of the limiting rope 53 is fixedly connected to the outer side of the slide rail 3.

[0055] The positioning tube 5 works in conjunction with the balloon 6. When the slide block 33 moves to the front end of the slide rail 3 to load and unload the commutator blank, it is convenient for the user to put the commutator blank on the outside of the balloon 6, avoiding the worker from approaching the cutting blade 85 to load and unload the commutator blank, thus achieving the pre-fixation of the commutator blank.

[0056] When the slide block 33 moves to the front end of the slide rail 3, the limiting rope 53 is tightened and drives the truss 51 to move towards the front end of the positioning tube 5. The limiting spring 52 is compressed, pulling part of the structure of the ball bag 6 into the second cone sleeve 4. At this time, the front end of the commutator blank outside the ball bag 6 further contacts the rear end of the second cone sleeve 4. The second cone sleeve 4 pushes the commutator blank towards the rear end of the ball bag 6, making it convenient for the user to remove the commutator blank from the outside of the ball bag 6.

[0057] In this embodiment, as Figure 2 , Figure 5 and Figure 6 As shown, a cooling pipe 61 and a return pipe 62 are fixedly installed at the top and bottom of the front end of the balloon 6, respectively. The rear end of the return pipe 62 extends to the inner side of the rear end of the balloon 6. A cooling extension pipe is fixedly installed at the front end of the cooling pipe 61, and the cooling extension pipe is fixedly connected to the output end of the mold temperature controller. A return extension pipe is fixedly installed at the front end of the return pipe 62, and the front end of the return extension pipe is fixedly connected to the return port of the mold temperature controller.

[0058] The ball 6, cooling pipe 61, return pipe 62 and mold temperature controller work together to facilitate the cooling of the commutator blank after cutting by the ball 6, so as to avoid the problem of thermal deformation of the commutator blank during the cutting operation. The cutting operation of the commutator blank by this equipment is a single double-cut symmetrical cutting process.

[0059] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the center of the second tapered sleeve 4 is aligned with the center of the first tapered sleeve 21 along the same axis. The rear end of the second tapered sleeve 4 is fitted with a commutator blank, and the rear end of the commutator blank is fitted with the front end of the first tapered sleeve 21.

[0060] The first cone sleeve 21 and the second cone sleeve 4 need to perform the clamping operation of the commutator blank and the rotation of the commutator blank.

[0061] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A precision turning apparatus for motor commutators, characterized by: The utility model provides a kind of structure, including as follows: Rack (1), the top rear side and front side of the rack (1) are respectively fixed with mounting bracket (2) and slide rail (3), the top middle part of the mounting bracket (2) is movably connected with first cone sleeve (21); Second cone sleeve (4), the front end outer side of the second cone sleeve (4) is fixed with gear slot, the middle part of the second cone sleeve (4) is fixed with positioning pipe (5), the rear end inner side of the positioning pipe (5) is sleeved with balloon (6); The middle part of the slide rail (3) is movably connected with lead screw (31), the front end of the lead screw (31) is fixed with displacement motor (32), the outer side of the displacement motor (32) is fixedly connected with the front end of slide rail (3), the outer side of the lead screw (31) is threadedly connected with sliding seat (33), the bottom of the sliding seat (33) is slidably connected with the top of slide rail (3); The top end inner side of the sliding seat (33) is movably connected with the front end outer side of the second cone sleeve (4), the outer side of the sliding seat (33) is fixed with docking interface, the bottom of the sliding seat (33) is fixed with driving motor (34), the output end of the driving motor (34) is fixed with speed reducer (35), the output end of the speed reducer (35) is fixed with spur gear (36), the top of the spur gear (36) extends to the top end inner side of the sliding seat (33), the top of the spur gear (36) is engaged with the bottom of the second cone sleeve (4); The front end inner side of the positioning pipe (5) is fixed with limit spring (52), the rear end of the limit spring (52) is fixed with truss (51), the rear end of the truss (51) is fixedly connected with the front end of balloon (6), the front end of the truss (51) is fixed with limit rope (53), the front end of the limit rope (53) extends to the front end outer side of the positioning pipe (5), the front end of the limit rope (53) is fixedly connected with the outer side of slide rail (3); The front end top and bottom of the balloon (6) are respectively fixed with cooling pipe (61) and return pipe (62), the rear end of the return pipe (62) extends to the rear end inner side of the balloon (6), the front end of the cooling pipe (61) is fixed with cooling extension pipe, the cooling extension pipe is fixedly connected with the output end of mold temperature controller, the front end of the return pipe (62) is fixed with return extension pipe, the front end of the return extension pipe is fixedly connected with the return port of mold temperature controller.

2. The motor commutator precision turning apparatus of claim 1, wherein: The rear end of the mounting bracket (2) is fixed with guide frame (7), the rear end of the guide frame (7) is fixed with electric push rod (71), the rear end of the electric push rod (71) is fixed with motor frame (72), the middle part of the motor frame (72) is fixed with deflection motor (73), the center of the motor shaft of the deflection motor (73) and the center of the first cone sleeve (21) keep in the same axial direction, the output end of the deflection motor (73) is fixed with sleeve (74), the inner side of the left end and right end of the sleeve (74) is respectively fixed with reset spring (75), the top of the reset spring (75) is fixed with ball head pull rod (76), the bottom of the ball head pull rod (76) is sleeved with the middle part of the sleeve (74).

3. The motor commutator precision turning apparatus of claim 2, wherein: The outer side of the guide frame (7) is slidably connected with a sliding sleeve (8), the left end and the right end of the sliding sleeve (8) are movably connected with connecting rods (81), the connecting rods (81) are arranged in a scissors type structure on the outer side of the sliding sleeve (8), the top end of the connecting rod (81) is movably connected with the top of the ball head pull rod (76), the bottom of the connecting rod (81) is fixedly provided with a fixing frame (82), the outer side of the fixing frame (82) is fixedly provided with a cutting motor (83), the output end of the cutting motor (83) is fixedly provided with an extension shaft (84), and the outer side of the extension shaft (84) is fixedly provided with a cutting knife (85).

4. The motor commutator precision turning apparatus of claim 1, wherein: The center of the second taper sleeve (4) and the center of the first taper sleeve (21) are kept in the same axial direction, and the rear end of the commutator blank is sleeved with the rear end of the first taper sleeve (21).

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