Square hole brake disc accurate positioning tool for assembling electromagnetic brake

Abstract

The square hole brake disc accurate positioning tool comprises a positioning disc, a positioning column and a reset compression spring, the axial direction of the positioning disc serves as the vertical direction, a square boss protruding downwards is arranged in the center of the lower side of the positioning disc, a vertical positioning through hole is formed in the position, close to the edge, of the positioning disc, and the reset compression spring is arranged in the positioning through hole. The vertical positioning column penetrates through the positioning through hole, the vertical reset compression spring is arranged outside the positioning column in a sleeving mode, located above the positioning disc and enables the positioning column to have upward elastic force, the section, close to the lower end, of the positioning column is a conical section, and the lower end of the conical section is a small-diameter end. According to the utility model, the high-precision positioning function of the relative position (including axial coaxiality and circumferential relative position) between the brake disc and the stator can be realized, and the application requirement of a user for automatically connecting an electromagnetic brake and a rotating shaft by using equipment such as a manipulator can be met; and the brake disc positioning process after preliminary assembly of the electromagnetic brake is easy to operate, rapid and efficient, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a tool for assembling an electromagnetic brake, in particular to a tool for accurately positioning a square hole brake disc for assembling an electromagnetic brake. Background Art

[0002] like Figure 1-Figure 3 As shown, the conventional structure of the electromagnetic brake includes a stator 11, an armature 10, a brake disc 7 and a cover plate 1, wherein the brake disc 7 is located between the armature 10 and the cover plate 1, and the armature 10 is located between the stator 11 and the brake disc 7. A plurality of (three in the figure) connecting screws 2 respectively pass through a plurality of (three in the figure) connecting through holes on the cover plate 1, a plurality of (three in the figure) central through holes of bushings 8, and a plurality of (three in the figure) connecting through grooves 9 on the edge of the armature 10, and then are connected to a plurality of (three in the figure) screw holes 13 on the stator 11. An electromagnetic coil (not visible in the figure) is installed in the stator 11. The brake disc 7 is connected to the rotating shaft or the transmission shaft when in use (not shown in the figure, it is a conventional structure). The elastic force of the compression spring acts on the armature 10, pushing the armature 10 to press the brake disc 7 against the cover plate 1 to achieve the braking function. When the electromagnetic coil is energized, a magnetic field is generated. The magnetic field generates an electromagnetic attraction on the armature 10 that is opposite to the elastic force of the compression spring. The electromagnetic attraction overcomes the elastic force of the compression spring and makes the armature 10 close to the stator 11. The brake disc 7 can rotate freely between the armature 10 and the cover plate 1 to achieve the braking function. Figure 1 Also shown is the central through hole 3 of the cover plate 1, and a plurality of (three in the figure) positioning holes 12 are provided on the stator 11. The edges of the cover plate 1 and the armature 10 are respectively provided with a plurality of brake positioning grooves 5 corresponding to the plurality of positioning holes 12. A brake identification groove 4 is also provided at a position close to the brake positioning groove 5 on the edge of the cover plate 1 and the armature 10. Positions corresponding to the plurality of bushings 8 on the edge of the armature 10 are also respectively provided with clearance grooves 9, and the plurality of bushings 8 pass through the plurality of clearance grooves 9 respectively. These structures are all conventional structures of electromagnetic brakes.

[0003] like Figure 1-Figure 3 As shown, in order to realize the functions of circumferential rotation transmission and axial relative movement between the brake disc and the rotating shaft, the central through hole of the brake disc 7 often adopts a square hole 6 (it can also be connected by gear matching, but this structure is not discussed in the present application). This brake disc 7 is also called a square hole brake disc. When connected to the rotating shaft of the equipment, the square segment on the rotating shaft or the square transmission shaft cooperates with the square hole 6 of the brake disc 7 to realize the connection function of circumferential rotation transmission and axial relative movement.

[0004] In actual applications, after the electromagnetic brake product is delivered to the user, the user connects the brake disc 7 to the rotating shaft by himself. If manual operation is used, there is no strict limit on the relative position between the brake disc 7 and the stator 11 (including other components). However, with the increasing degree of automation, many users have adopted robots for automated operations. In this case, it is necessary to use a manipulator to grab the components to complete the connection operation. This requires that the relative position between the brake disc 7 and the stator 11 must be defined with high precision in advance. This function needs to be completed by the electromagnetic brake manufacturer. The traditional method to achieve this function is for the staff to achieve it based on their own experience or a simple centering tool + measurement method, which makes it difficult to achieve high-precision positioning of the relative position between the brake disc 7 and the stator 11, and the efficiency is very low, making it difficult to meet user needs. Utility Model Content

[0005] The purpose of the utility model is to provide a square hole brake disc precise positioning tool for assembling electromagnetic brakes in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A square hole brake disc precision positioning tool for assembling an electromagnetic brake comprises a positioning disc, a positioning column and a reset spring. With the axial direction of the positioning disc as the vertical direction, a downwardly convex square boss is provided at the center position of the lower side of the positioning disc. A vertical positioning through hole is provided near the edge of the positioning disc. The vertical positioning column passes through the positioning through hole. The vertical reset spring is sleeved outside the positioning column and is located above the positioning disc so that the positioning column has an upward elastic force. A section of the positioning column near the lower end is a conical section and the lower end of the conical section is a small diameter end.

[0008] Preferably, in order to enable the positioning column to have the function of upward movement and limit position to avoid it from disengaging from the positioning through hole and to enable the reset compression spring to be reliably limited and easy to process and assemble, the outer diameter of the upper end of the conical section is larger than the outer diameter of the part of the positioning column located above the conical section and a positioning column step is formed at the connection between the two, the diameter of a section of the positioning through hole located below the upper end of the conical section is larger than the diameter of a section of the positioning through hole located above the upper end of the conical section, the positioning column step is placed in a section of the positioning through hole located below the upper end of the conical section and cannot move upward to a position above the upper end of the conical section, the upper end of the positioning column is provided with a vertical positioning column screw hole, the stud of the vertical limit screw is placed in the positioning column screw hole and threadedly connected, the upper end of the reset compression spring contacts the nut of the limit screw, and the lower end of the reset compression spring contacts the top of the positioning plate.

[0009] Preferably, in order to have a higher precision positioning function during the assembly of the electromagnetic brake, a vertical positioning plate identification groove is provided on the positioning plate near the edge and near the positioning through hole.

[0010] Preferably, in order to have a higher precision positioning function during the assembly of the electromagnetic brake, a downwardly protruding circular boss is provided at the lower center position of the positioning plate, the outer diameter of the circular boss is larger than the maximum outer diameter of the square boss, and the square boss is provided at the center position of the circular boss and protrudes downward.

[0011] Preferably, in order to facilitate holding and moving the positioning plate, a handle protruding upward is provided at the center of the upper side of the positioning plate.

[0012] The beneficial effects of the utility model are:

[0013] The utility model designs a positioning disk, a positioning column and a return spring that cooperate with each other. During the assembly process, the square boss on the positioning disk can be placed in the square hole of the brake disk of the electromagnetic brake to achieve a positioning connection between the two. The positioning column is then pressed down so that the middle and lower part of the conical section at its lower end is placed in the positioning hole on the stator of the electromagnetic brake to achieve a high-precision positioning function between the positioning column and the stator, thereby achieving a high-precision positioning function of the relative position (including axial coaxiality and circumferential relative position) between the brake disk and the stator, which can meet the application needs of users who use equipment such as manipulators to automatically connect the electromagnetic brake and the rotating shaft. In addition, the brake disk positioning process after the initial assembly of the electromagnetic brake is simple, fast and efficient, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional exploded view of an electromagnetic brake using a square-hole brake disc before assembly;

[0015] Figure 2 It is a three-dimensional diagram of a brake disc of an electromagnetic brake;

[0016] Figure 3 It is a stereoscopic diagram of an electromagnetic brake using a square-hole brake disc after assembly;

[0017] Figure 4 It is a three-dimensional diagram of the square-hole brake disc precise positioning tooling used for electromagnetic brake assembly described in the utility model;

[0018] Figure 5 This is a front view of the square hole brake disc precise positioning tool used for electromagnetic brake assembly described in the utility model;

[0019] Figure 6 yes Figure 5 AA section view in;

[0020] Figure 7 It is a top view of the square hole brake disc precise positioning tooling used for electromagnetic brake assembly described in the utility model;

[0021] Figure 8 It is a bottom view of the square hole brake disc precise positioning tooling used for electromagnetic brake assembly described in the utility model;

[0022] Fig. 9 It is a stereoscopic view of the precise positioning tooling for square-hole brake disc used for electromagnetic brake assembly described in the utility model when it is in use. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 4-Figure 8 As shown, the square hole brake disc precise positioning tooling for electromagnetic brake assembly described in the utility model comprises a positioning disc 14, a positioning column 18 and a return spring 19. The axial direction of the positioning disc 14 is vertical, and a downwardly convex square boss 15 is provided at the center position of the lower side of the positioning disc 14. A vertical positioning through hole 24 is provided near the edge of the positioning disc 14. The vertical positioning column 18 passes through the positioning through hole 24. The vertical return spring 19 is sleeved outside the positioning column 18 and is located above the positioning disc 14 and enables the positioning column 18 to have an upward elastic force. A section of the positioning column 18 near the lower end is a conical section 22 and the lower end of the conical section is a small diameter end.

[0025] like Figure 4-Figure 8 As shown, the utility model also discloses the following more optimized specific structures:

[0026] In order to enable the positioning column 18 to have the function of upward movement and limit to avoid it from disengaging from the positioning through hole 24 and to enable the return compression spring 19 to be reliably limited and easy to process and assemble, the outer diameter of the upper end of the conical section 22 is larger than the outer diameter of the part of the positioning column 18 located above the conical section 22 and a positioning column step 23 is formed at the connection between the two, the aperture of a section of the positioning through hole 24 located below the upper end of the conical section 22 is larger than the aperture of a section located above the upper end of the conical section 22, the positioning column step 23 is placed in a section of the positioning through hole 24 located below the upper end of the conical section 22 and cannot move upward to a position above the upper end of the conical section 22, the upper end of the positioning column 18 is provided with a vertical positioning column screw hole (not marked in the figure), the stud of the vertical limit screw 17 is placed in the positioning column screw hole and threadedly connected, the upper end of the return compression spring 19 contacts the nut of the limit screw 17, and the lower end of the return compression spring 19 contacts the top of the positioning plate 14.

[0027] In order to achieve a more accurate positioning function during the assembly of the electromagnetic brake, a vertical positioning disc identification groove 20 is provided on the positioning disc 14 near the edge and near the positioning through hole 24 .

[0028] In order to have a higher precision positioning function during the assembly of the electromagnetic brake, a downwardly protruding circular boss 21 is provided at the lower center position of the positioning plate 14. The outer diameter of the circular boss 21 is larger than the maximum outer diameter of the square boss 15. The square boss 15 is provided at the center position of the circular boss 21 and protrudes downward.

[0029] In order to facilitate holding and moving the positioning plate 14 , a handle 16 protruding upward is provided at the center of the upper side of the positioning plate 14 .

[0030] Combination Figure 1-Figure 9When using, the electromagnetic brake is preliminarily assembled first, but at this time the brake disc 7 has not achieved accurate positioning relative to the stator 11, and the other components of the electromagnetic brake have been connected and accurately positioned; the electromagnetic coil of the electromagnetic brake is connected to the power supply, and the stator 11 generates electromagnetic attraction on the armature 10, so that the brake disc 7 is in a state where it can rotate freely; then hold the handle 16, move the positioning disc 14 to the top of the cover plate 1 on the upper part of the electromagnetic brake, and align the positioning disc identification groove 20 with the brake identification groove 4 by observation, and then move the positioning disc 14 downward to make the square boss 1 5 passes through the central through hole 3 of the cover plate 1 and is placed in the square hole 6 of the brake disc 7. At the same time, the circular boss 21 is placed in the central through hole 3 of the cover plate 1, and the positioning disc 14 is blocked by the cover plate 1 and cannot move further downward. At this time, the axial coaxiality between the brake disc 7 and the cover plate 1, the stator 11 and the armature 10 is determined, and the circumferential relative position between the brake disc 7 and the positioning column 18 is determined; then press the nut of the limit screw 17 with your finger to overcome the elastic force of the return compression spring 19 to move the positioning column 18 downward, and the conical section 22 of the positioning column 18 successively passes through the brake positioning groove 5 of the cover plate 1 and the armature 10, and then enters the corresponding positioning hole 12 on the stator 11 (Note: after the positioning disc identification groove 20 is roughly aligned with the brake identification groove 4 by naked eye observation, it is very easy to achieve that the conical section 22 of the positioning column 18 enters the corresponding positioning hole 12 on the stator 11), continue to press the nut of the limit screw 17, and in the circular During the cooperation between the conical outer wall of the conical section 22 and the circumferential hole wall of the positioning hole 12, the positioning column 18 will drive the positioning disk and the brake disk 7 to rotate adaptively until the conical outer wall of the conical section 22 is in full and close contact with the circumferential hole wall of the positioning hole 12, and the circumferential relative position of the positioning column 18 and the stator 11 is accurately determined, that is, the circumferential relative position of the brake disk 7 and the stator 11 is accurately determined. At this time, the power supply of the electromagnetic coil is disconnected, and the electromagnetic attraction of the stator 11 to the armature 10 disappears. Under the elastic force of the compression spring of the electromagnetic brake, the compression spring generates an elastic thrust on the armature 10, so that the armature 10 presses the brake disk 7 against the cover plate 1 to maintain a stable state; then loosen the limit screw 17, and under the elastic force of the reset compression spring 19, the positioning column 18 moves upward and resets, and then the handle 16 is held to remove the positioning disk 14, completing the precise positioning of the brake disk of the electromagnetic brake, and finally completing the high-precision assembly of the electromagnetic brake. After the electromagnetic brake is delivered to the user, the user can use a robot or other components to automatically connect the brake disc 7 of the electromagnetic brake to the rotating shaft of the equipment, which is convenient for application.

[0031] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A square-hole brake disc precision positioning tool for electromagnetic brake assembly, comprising a positioning disc, characterized in that: It also includes a positioning column and a reset spring. With the axial direction of the positioning plate as the vertical direction, a downwardly convex square boss is provided at the center position of the lower side of the positioning plate. A vertical positioning through hole is provided near the edge of the positioning plate. The vertical positioning column passes through the positioning through hole. The vertical reset spring is sleeved outside the positioning column and is located above the positioning plate so that the positioning column has an upward elastic force. A section of the positioning column close to the lower end is a conical section and the lower end of the conical section is a small diameter end.

2. The square hole brake disc precise positioning tool for electromagnetic brake assembly according to claim 1, characterized in that: The outer diameter of the upper end of the conical section is larger than the outer diameter of the part of the positioning column located above the conical section, and a positioning column step is formed at the connection between the two. The diameter of a section of the positioning through hole located below the upper end of the conical section is larger than the diameter of a section of the positioning through hole located above the upper end of the conical section. The positioning column step is placed in a section of the positioning through hole located below the upper end of the conical section and cannot move upward to a position above the upper end of the conical section. A vertical positioning column screw hole is provided at the upper end of the positioning column, and the stud of a vertical limit screw is placed in the positioning column screw hole and threadedly connected. The upper end of the reset compression spring contacts the nut of the limit screw, and the lower end of the reset compression spring contacts the top of the positioning plate.

3. The square hole brake disc precise positioning tool for electromagnetic brake assembly according to claim 1 or 2, characterized in that: A vertical positioning plate identification groove is provided on the positioning plate at a position close to the edge and close to the positioning through hole.

4. The square hole brake disc precise positioning tool for electromagnetic brake assembly according to claim 1 or 2, characterized in that: A downwardly convex circular boss is provided at the lower center of the positioning plate, the outer diameter of the circular boss is larger than the maximum outer diameter of the square boss, and the square boss is provided at the center of the circular boss and protrudes downward.

5. The square-hole brake disc precise positioning tool for electromagnetic brake assembly according to claim 1 or 2, characterized in that: A handle protruding upward is provided at the center of the upper side of the positioning plate.

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