Anti-adhesion dilating hook top head tool and polishing equipment

Abstract

The application discloses a top head tool for preventing adhesion of an expansion hook and a polishing device, and particularly relates to the technical field of machining. The top head tool for preventing adhesion of the expansion hook comprises a top head sleeve provided with an inner hole; an expansion hook top head fixedly connected with the top head sleeve, one end of the expansion hook top head being located in the inner hole and the other end being provided with a guide surface; a spring hole and a sliding hole are provided in the expansion hook top head and are in communication; and a fixed core comprising a positioning portion, a sliding portion and a limiting portion, wherein the diameters of the positioning portion, the sliding portion and the limiting portion are sequentially increased. The sliding portion is slidingly connected in the sliding hole, the limiting portion is located in the spring hole, and a rectangular spring is connected in the spring hole; and the fixed core, the expansion hook top head and the top head sleeve are coaxially arranged. The application can effectively improve the problem that the corners of the copper sheet of the existing commutator are easily bent in the polishing process.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a mandrel tooling and grinding equipment for preventing sticking of expansion hooks. Background Technology

[0002] The commutator, also called a rectifier, is a crucial component for the continuous rotation of the motor armature. A commutator consists of several commutator segments arranged in a cylindrical or disc-shaped structure, with mica or other insulating materials separating adjacent segments, and the cylinder is integrally molded from bakelite. Before bending the commutator, one end of each segment is pre-machined into a thin, straight strip and clamped between rotating upper and lower mandrels. After the sharp edges of the segments are removed by a wire wheel, they are placed in a bending die to bend the straight strip into an "r" shape.

[0003] In this process, the sharp edges of the copper straight bars require close-range polishing with a wire wheel. Because the copper bars are relatively thin and soft, they tend to bend inwards along the circumference of the product base when the wire wheel is applied, which is opposite to the direction of the hook. Furthermore, if the diameter of the holding head holding the hook end matches the inner diameter of the hook end, the product will stick to the holding head when it is lifted after the wire wheel polishes, hindering its transfer to the hook-bending process. Alternatively, if the diameter of the holding head holding the hook end is smaller than the inner diameter, although the wire wheel can easily detach the product after polishing, the inwardly bent copper straight bar entering the hook-bending mold will flatten the hook, rendering the product unusable. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this invention is to disclose a top tooling and grinding equipment for preventing sticking and expansion hooks, so as to improve the problem that the edges and corners of the copper sheets of the existing commutator are prone to bend inside during the grinding process.

[0005] To achieve the above and other related objectives, this invention discloses a top tooling for an anti-adhesion expansion hook, comprising: The top cover has an inner hole; An expansion hook top is fixedly connected to the top sleeve. One end of the expansion hook top is located in the inner hole, and the other end has a guide surface. The expansion hook top has a spring hole and a sliding hole inside, and the spring hole and the sliding hole are connected. The core is defined as follows: it includes a positioning part, a sliding part, and a limiting part, wherein the diameters of the positioning part, the sliding part, and the limiting part increase sequentially. Wherein, the sliding part is slidably connected within the sliding hole, the limiting part is located within the spring hole, and a rectangular spring is connected within the spring hole; and The core, expansion hook, and outer sleeve of the core are coaxially arranged.

[0006] In one embodiment of the present invention, the top cover is further provided with a connecting hole, and a connecting rod is detachably connected to the connecting hole.

[0007] In one embodiment of the present invention, the top head sleeve is provided with a screw hole, and a tightening screw is threaded into the screw hole; wherein, the expansion hook top head is fixedly connected to the top head sleeve by the tightening screw.

[0008] In one embodiment of the present invention, a limiting hole is provided on the side wall of the expansion hook top, and a tightening screw is threaded into the limiting hole.

[0009] In one aspect of the present invention, the guiding surface is a conical surface, and the central angle of the cone is between 30 and 60°.

[0010] In one embodiment of the present invention, the guiding surface is an arc-shaped surface.

[0011] In one embodiment of the present invention, a lower support bushing is further included, and a lower support slewing seat is fixedly connected to it; wherein, the commutator is located between the lower support slewing seat and the expansion hook top.

[0012] In one embodiment of the present invention, the lower support bushing and the expansion hook top are coaxially arranged.

[0013] The present invention also provides a grinding device for anti-adhesion expansion hooks, which includes: a top tooling for anti-adhesion expansion hooks as described above; and a grinding mechanism; The grinding mechanism is located on one side of the top tooling of the anti-adhesion expansion hook and is used to grind the metal strip of the commutator.

[0014] In one embodiment of the present invention, the grinding mechanism includes a driving component and a polishing component, and the driving component and the polishing component are connected by a transmission; and the polishing component is located on one side of the commutator.

[0015] In summary, this invention discloses a tooling and grinding device for an anti-adhesion expansion hook. By providing a guide surface at the end of the expansion hook head, the tooling allows the expansion hook head to smoothly enter the area enclosed by the metal strip of the commutator. This provides support to the metal strip, facilitating the expansion of the straight hook on the product to be processed. This ensures that the polished product does not bend inwards and flows smoothly into the hook mold for subsequent processing. It effectively improves the problem of inward bending of the copper strip edges during grinding of existing commutators. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a grinding device for preventing sticking of expansion hooks according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the working state of a grinding device for preventing sticking of expansion hooks according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the top tooling for the anti-adhesion expansion hook of the present invention in one embodiment; Figure 4 This is an exploded structural diagram of a top tooling for an anti-adhesion expansion hook according to an embodiment of the present invention; Figure 5 This is a structural schematic diagram showing the connection state of the mandrel outer sleeve, the expansion hook mandrel, and the mandrel in one embodiment of the anti-adhesion expansion hook tooling of the present invention. Figure 6 This is a schematic diagram of the expansion hook top head in one embodiment of the anti-adhesion expansion hook tooling of the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the expansion hook top head in one embodiment of the anti-adhesion expansion hook tooling of the present invention; Figure 8 This is a schematic diagram of the outer sleeve of the top head tooling of the anti-adhesion expansion hook according to an embodiment of the present invention; Figure 9 This is a cross-sectional structural schematic diagram of the mandrel outer sleeve in one embodiment of the anti-adhesion expansion hook tooling of the present invention; Figure 10 This is a schematic diagram of the upper support rotary seat in one embodiment of the top tooling for the anti-adhesion expansion hook of the present invention; Figure 11 This is a schematic diagram of the commutator structure in one embodiment of the anti-adhesion expansion hook tooling of the present invention.

[0018] Component designation explanation

[0019] 10. Commutator; 11. Metal strip; 100. Top head sleeve; 101. First tightening screw; 102. Second tightening screw; 103. Inner hole; 104. Connecting hole; 200. Expansion hook top; 201. Limiting hole; 202. Spring hole; 203. Sliding hole; 204. Guide surface; 210. Rectangular spring; 300. Core fixing; 310. Positioning part; 320. Sliding part; 330. Limiting part; 400. Connecting rod; 500. Upper support slewing seat; 510. Slewing shaft sleeve; 511. Locking bolt; 520. First bearing; 521. Spacer washer; 523. Second bearing; 600. Drive components; 610. Polished components; 700, Lower support bushing; 710, Drive gear; 720, Lower support slewing seat. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0021] Please see Figures 1 to 11 It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0022] Please see Figure 1 and Figure 2 This invention discloses a grinding device for preventing sticking of expansion hooks, which includes at least one top tooling for preventing sticking of expansion hooks. This tooling can improve the problem that the edges and corners of the copper sheets of the existing commutator 10 are prone to bending inside during the grinding process.

[0023] Please see Figures 1 to 11In one embodiment, the anti-adhesion expansion hook tooling may include a top sleeve 100, an expansion hook top 200, and a centering 300, which are coaxially arranged. An inner hole 103 is formed within the top sleeve 100, and the diameter of this inner hole 103 matches the outer diameter of the expansion hook top 200. Therefore, one end of the expansion hook top 200 can be located within the inner hole 103 of the top sleeve 100. The expansion hook top 200 and the top sleeve 100 are fixedly connected, but a detachable connection is also possible. For example, multiple threaded holes are formed on the expansion hook top 200, and fastening screws are threaded into these holes. By tightening the fastening screws, the expansion hook top 200 and the top sleeve 100 are in a relatively fixed connection state. Alternatively, a limiting hole 201 may be provided on the expansion hook mandrel 200, and the limiting hole 201 may correspond to the threaded hole on the mandrel outer sleeve 100.

[0024] The top sleeve 100 is equipped with a connecting rod 400, which is fixedly connected to the top sleeve 100. Specifically, a connecting hole 104 is allowed to be formed on the top sleeve 100, and this connecting hole 104 is allowed to communicate with the inner hole 103. The connecting rod 400 and the connecting hole 104 are slidably connected, and a screw hole communicating with the connecting hole 104 is also formed on the top sleeve 100. It is understood that the screw hole is located on the side wall of the top sleeve 100, and a first tightening screw 101 is threaded into the screw hole. The end of the first tightening screw 101 abuts against the connecting rod 400. Through the first tightening screw 101, the top sleeve 100 and the connecting rod 400 can be kept in a relatively fixed state.

[0025] It should be noted that the top tooling of the anti-adhesion expansion hook disclosed in this invention is connected to the upper support rotary seat 500 via a connecting rod 400, and the top tooling of the anti-adhesion expansion hook and the upper support rotary seat 500 are rotatably connected.

[0026] Please see Figures 1 to 11In one embodiment, a rotary shaft sleeve 510 is rotatably connected to the upper support rotary seat 500, and a rotating shaft is disposed on the upper support rotary seat 500. The rotary shaft sleeve 510 and the rotating shaft are fixedly connected by locking bolts 511, allowing the rotary shaft sleeve 510 to rotate on the first rotary shaft. A first bearing 520 and a second bearing 523 are also connected inside the rotary shaft sleeve 510, and a spacer 521 is disposed between the first bearing 520 and the second bearing 523. Therefore, the connecting rod 400 is fixedly connected to the inner diameter of the first bearing 520 and the second bearing 523, and the stability of the connecting rod 400 during rotation is improved by the two sets of bearings. Simultaneously, under the action of the first bearing 520 and the second bearing 523, the stability of the anti-adhesion expansion hook top tooling during use can be effectively improved.

[0027] Please see Figures 1 to 11 In one embodiment, a second tightening screw 102 may be connected to both the top head sleeve 100 and the expansion hook top head 200. The second tightening screw 102 is simultaneously connected to both the screw hole on the top head sleeve 100 and the limiting hole 201 on the expansion hook top head 200. The second tightening screw 102 allows for a fixed connection between the expansion hook top head 200 and the top head sleeve 100.

[0028] Specifically, a lower support rotary seat 720 is provided on the opposite side of the expansion hook top 200. The lower support bushing 700 is coaxially arranged with the expansion hook top 200. It can be understood that the commutator 10 is located between the lower support rotary seat 720 and the expansion hook top 200. The support between the lower support rotary seat 720 and the expansion hook top 200 effectively improves the stability of the commutator 10 during the grinding and polishing process. Simultaneously, a power source can be connected to the lower support rotary seat 720 to drive its rotation.

[0029] For example, a lower support sleeve 700 is fixedly connected to the lower support slewing base 720, and the lower support sleeve 700 and the lower support slewing base 720 are detachably connected. Simultaneously, a drive gear 710 is connected to the lower support sleeve 700, and this drive gear 710 is connected to a power source. The power source drives the drive gear 710 to rotate, thereby driving the lower support slewing base 720 and the commutator 10 connected to the lower support slewing base 720 to rotate. A servo motor can be used as the power source. However, it is not limited to this; the power source can be determined according to actual needs.

[0030] It should be noted that during the rotation of the commutator 10, the angle at which the metal strip 11 is mounted on the commutator 10 moves intermittently, which further improves the grinding and polishing effect on the metal strip 11.

[0031] Please see Figures 1 to 11 In one embodiment, the expansion hook top 200 and the top cover 100 are detachably connected. Therefore, it is possible to select the appropriate expansion hook top 200 according to different commutator 10 diameters. It should be noted that the diameter of the expansion hook top 200 is 0.5-1 mm larger than the inner diameter of the hook of the product to be processed. Preferably, the diameter of the expansion hook top 200 is 0.8 mm larger than the inner diameter of the hook of the product to be processed.

[0032] Meanwhile, for the expansion hook top 200, a guide surface 204 is provided at its end. The guide surface 204 may be tapered, and the cone angle of the tapered structure is 30 to 60°. Alternatively, in one embodiment, the guide surface 204 may be arc-shaped. It is understood that the guide surface 204 allows the expansion hook top 200 to smoothly enter the area enclosed by the metal strip 11 of the commutator 10, so as to provide certain support for the metal strip 11 through the expansion hook top 200, so as to facilitate the expansion of the straight hook of the product to be processed.

[0033] To improve the docking effect between the expansion hook head 200 and the commutator 10, further guidance can be provided by the stator 300 located on the expansion hook head 200.

[0034] Please see Figures 1 to 11 In one embodiment, the core 300 may include a positioning part 310, a sliding part 320, and a limiting part 330. Meanwhile, a spring hole 202 and a sliding hole 203 are provided within the expansion hook top 200, and the diameter of the spring hole 202 is greater than the diameter of the sliding hole 203. Furthermore, the spring hole 202 and the sliding hole 203 pass through the expansion hook top 200 at the communication opening.

[0035] Furthermore, for the core 300, the positioning part 310, the sliding part 320, and the limiting part 330 are connected sequentially, and the diameters of the positioning part 310, the sliding part 320, and the limiting part 330 increase sequentially. Specifically, the limiting part 330 is located inside the spring hole 202, and a rectangular spring 210 is provided inside the spring hole 202. The rectangular spring 210 allows the core 300 to quickly return to its original position after sliding relative to the expansion hook head 200.

[0036] Meanwhile, the sliding part 320 is located within the sliding hole 203, and the sliding part 320 can slide within the sliding hole 203. The positioning part 310 is located at the end of the sliding part 320, and the positioning part 310 protrudes from the end of the expansion hook head 200. For the commutator 10, a circular hole is provided at its shaft center. Therefore, the positioning part 310 can be engaged with the circular hole, so that after the commutator 10 is positioned, the stability of the commutator 10 during the grinding process can be improved.

[0037] Specifically, the compressed rectangular spring 210 presses against the limiting part 330 of the core 300, and the sliding part 320 of the core 300 extends about 5-10mm beyond the front end face of the expansion hook cone top, providing both telescopic distance and spring thrust. Simultaneously, it prevents the polished product from sticking to the expansion hook cone top. Combined with the fact that the outer diameter of the expansion hook cone top is 0.5-1mm larger than the inner diameter of the straight hook of the product to be processed, and the front end is designed with a tapered chamfer, it facilitates the expansion of the straight hook of the product to be processed, ensuring that the polished product to be processed neither bends inwards nor fails to flow smoothly into the hook bending mold for subsequent processing.

[0038] Please see Figures 1 to 11 In one embodiment, a grinding mechanism is provided on one side of the top tooling of the anti-adhesion expansion hook. This grinding mechanism allows for grinding of the metal strip 11.

[0039] Specifically, the polishing mechanism includes a drive component 600 and a polishing component 610, which are connected by a transmission mechanism. The polishing component 610 is located on one side of the commutator 10. The drive component 600 can be a motor, and the polishing component 610 can be determined according to actual needs. The motor and the polishing component 610 can be driven by a gear pair to improve stability during the polishing process and the actual polishing effect.

[0040] In actual operation, the upper expansion hook top 200 presses downwards, closing and clamping the commutator 10 to be processed. The lower support bushing 700 rotates, causing the commutator 10 to be processed to rotate together with the upper expansion hook top 200. The rotating polishing part 610 polishes the commutator 10. After polishing is completed, the upper expansion hook top 200 opens upwards, the lower rotating fixture stops rotating, and the polished product is removed and flows into the bending hook process.

[0041] In summary, this invention discloses a tooling and polishing device for an anti-adhesion expansion hook. By providing a guide surface 204 at the end of the expansion hook top 200, the guide surface 204 allows the expansion hook top 200 to smoothly enter the area enclosed by the metal strip 11 of the commutator 10. This provides additional support to the metal strip 11 through the expansion hook top 200, facilitating the expansion of the straight hook on the product to be processed. This ensures that the polished product to be processed neither bends inwards nor flows smoothly into the hook bending mold for subsequent processing.

[0042] Therefore, this invention effectively improves the problem that the edges and corners of the copper sheets in the existing commutator 10 are prone to inward bending during the polishing process. Thus, this invention effectively overcomes some practical problems in the prior art, and therefore has high utilization value and practical significance.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A top tooling for preventing sticking expansion hooks, characterized in that, include: Top cover (100) has an inner hole (103); An expansion hook top (200) is fixedly connected to the top sleeve (100). One end of the expansion hook top (200) is located in the inner hole (103), and the other end has a guide surface (204). A spring hole (202) and a sliding hole (203) are provided inside the expansion hook top (200), and the spring hole (202) and the sliding hole (203) are connected to each other. The core (300) includes a positioning part (310), a sliding part (320) and a limiting part (330), and the diameters of the positioning part (310), the sliding part (320) and the limiting part (330) increase sequentially. The sliding part (320) is slidably connected within the sliding hole (203), the limiting part (330) is located within the spring hole (202), and a rectangular spring (210) is connected within the spring hole (202); and The core (300), the expansion hook head (200), and the head sleeve (100) are coaxially arranged; The diameter of the expansion hook tip 200 is 0.5-1mm larger than the inner diameter of the hook of the product to be processed; The compressed rectangular spring 210 presses against the limiting part 330 of the core 300, and the sliding part 320 of the core 300 extends 5-10mm beyond the front end face of the expansion hook cone top, providing telescopic distance and spring thrust. At the same time, it can prevent the polished product from sticking to the expansion hook cone top. Combined with the fact that the outer diameter of the expansion hook cone top is 0.5-1mm larger than the inner diameter of the straight hook of the product to be processed, and the front end is designed with a tapered chamfer, it is easy to expand the straight hook of the product to be processed, ensuring that the polished product to be processed does not bend inward and can flow smoothly into the bending hook mold for subsequent processing. The expansion hook head (200) has a limiting hole (201) on its side wall, and the limiting hole (201) is internally threaded with a tightening screw; The guide surface (204) is a conical surface, and the central angle of the cone is between 30 and 60°; The guide surface (204) is an arc-shaped surface.

2. The top tooling for the anti-adhesion expansion hook according to claim 1, characterized in that, The top cover (100) is also provided with a connection hole (104), and a connecting rod (400) is detachably connected inside the connection hole (104).

3. The top tooling for the anti-adhesion expansion hook according to claim 1, characterized in that, The top sleeve (100) has a screw hole, and a tightening screw is threaded into the screw hole; The expansion hook top (200) is fixedly connected to the top sleeve (100) by the tightening screw.

4. The top tooling for the anti-adhesion expansion hook according to claim 1, characterized in that, It also includes a lower support bushing (700), and the device is fixedly connected to a lower support swivel seat (720). The commutator (10) is located between the lower support slewing seat (720) and the expansion hook head (200).

5. The top tooling for the anti-adhesion expansion hook according to claim 4, characterized in that, The lower support bushing (700) and the expansion hook head (200) are coaxially arranged.

6. A grinding device for preventing sticking of expansion hooks, characterized in that, include: The top tooling for the anti-adhesion expansion hook as described in any one of claims 1 to 5; and the grinding mechanism; The grinding mechanism is located on one side of the top tooling of the anti-adhesion expansion hook and is used to grind the metal strip (11) of the commutator (10).

7. The grinding equipment for anti-adhesion expansion hooks according to claim 6, characterized in that, The polishing mechanism includes a drive component (600) and a polishing component (610), and the drive component (600) and the polishing component (610) are connected by a drive mechanism; and the polishing component (610) is located on one side of the commutator (10).

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