Press fitting device for commutator of brush motor

Abstract

The utility model belongs to the technical field of rotor production, and provides a brush motor commutator press-fitting device which comprises a first workbench and a second workbench which are arranged in parallel. The first workbench is provided with an armature positioning fork used for installing a rotor. The second workbench is provided with an armature positioning block used for installing a commutator, and an optical axis. The end, away from the second workbench, of the optical axis is connected with the first workbench in a sliding mode. A limiting column is vertically arranged on the side, close to the first workbench, of the second workbench. During working, after a rotor is mounted on the armature positioning fork, a rotor rotating shaft is pressed into a central shaft hole of a commutator by means of external force pushing, in the pressing process, the optical axis ensures the pressing stability and accuracy, the limiting column can limit the pressing distance, and the problems of excessive pressing connection and the like are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotor production, and in particular relates to a commutator press-fitting device for a brushed motor. Background Art

[0002] Generally, there are two methods for factories to produce rotors. The first method is to purchase a complete set of rotor forming machines, which can ensure the quality of the rotors. However, the price of tens of thousands of yuan and the high maintenance costs in the later stage limit its use. At the same time, its complicated operation also makes it impossible for ordinary people to use the machine, which brings a lot of inconvenience. The other method is to manually press the commutator with an ordinary press. There is no positioning device. The workers rely on their experience to align the rotor shaft with the central shaft hole of the commutator for press-fitting, which can easily affect the press-fitting quality. At the same time, it is easy to injure the workers' hands during the press-fitting process, causing work-related injuries.

[0003] The inventors have found that the current use of a mechanical press-fitting device can solve the problems encountered in manual press-fitting of commutators; however, the current mechanical press-fitting device cannot limit the press-fitting distance, which can easily cause problems such as over-crimping. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a method in which the setting of the optical axis of the utility model ensures the stability and accuracy of press-fitting, and the limiting column can limit the press-fitting distance, thereby avoiding problems such as excessive crimping.

[0005] According to some embodiments, the utility model provides a brush motor commutator press-fitting device, which adopts the following technical solution:

[0006] A brushed motor commutator press-fitting device comprises a first workbench and a second workbench arranged in parallel;

[0007] An armature positioning fork is arranged on the first workbench; an armature positioning block and an optical axis are arranged on the second workbench; the optical axis is slidably connected to the first workbench at one end away from the second workbench; a limiting column is vertically arranged on the second workbench, on one side close to the first workbench.

[0008] Furthermore, the armature positioning fork includes a fixing plate, and a long slot and a fork structure arranged on the fixing plate; the fixing plate is fixed to the first workbench through the long slot and bolts.

[0009] Furthermore, the optical axis is slidably connected to the first workbench via a flange linear bearing.

[0010] Furthermore, a stopper is provided on the flange linear bearing.

[0011] Furthermore, optical axes are provided at both ends of the second workbench.

[0012] Furthermore, a spring is sleeved on the optical axis; two ends of the spring are in contact with the first workbench and the second workbench respectively.

[0013] Furthermore, spring inner sleeves are provided at both ends of the optical axis.

[0014] Furthermore, a second armature positioning block is provided on the second workbench; and a first armature positioning block is detachably provided on the second armature positioning block.

[0015] Furthermore, there are multiple limiting columns, and the lengths of the multiple limiting columns are equal.

[0016] Furthermore, it also includes a pressure head.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model comprises a first workbench and a second workbench which are arranged in parallel; an armature positioning fork for installing a rotor is arranged on the first workbench; an armature positioning block for installing a commutator and an optical axis are arranged on the second workbench; the optical axis is slidably connected to the first workbench at one end away from the second workbench; a limiting column is vertically arranged on the second workbench, on a side close to the first workbench; when working, after the armature positioning fork is installed on the rotor, the rotor shaft is pressed into the central axis hole of the commutator with the help of external force, and during the pressing process, the optical axis ensures the stability and accuracy of the pressing, and the limiting column can limit the pressing distance, avoiding problems such as excessive crimping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the armature positioning fork structure of the utility model;

[0022] Figure 3 It is a side view of the armature positioning fork of the utility model;

[0023] Among them: 1. pressure head; 2. first workbench; 3. stopper; 4. optical axis; 5. spring; 6. second workbench; 7. base; 8. limit column; 9. armature positioning fork; 901. fixing plate; 902. long groove; 903. fork structure; 10. flange linear bearing; 11. screw; 12. connecting piece; 13. first armature positioning block; 14. spring inner sleeve; 15. second armature positioning block. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] Embodiment 1:

[0027] The commutator is manually pressed by ordinary presses without positioning devices. The workers rely on their experience to align the rotor shaft with the central shaft hole of the commutator for press-fitting, which can easily affect the press-fitting quality and easily injure the workers' hands during the press-fitting process, causing work-related injuries. The use of mechanical press-fitting devices can solve the problems of manual press-fitting of commutators; however, the current mechanical press-fitting devices cannot guarantee the press-fitting stability and accuracy, and cannot limit the press-fitting distance, which can easily cause problems such as over-pressing.

[0028] In response to the above problems, Figure 1 As shown, this embodiment provides a brush motor commutator press-fitting device, which can be used for the press-fitting of brush motor commutators of electric power steering systems (Electric Power Steering, EPS), etc.; the device includes a pressing head 1, a first workbench 2, a block 3, an optical axis 4, a spring 5, a second workbench 6, a base 7, a limit column 8, an armature positioning fork 9, a flange linear bearing 10, a screw 11, a connecting piece 12, a first armature positioning block 13, a spring inner sleeve 14 and a second armature positioning block 15.

[0029] The first workbench 2 and the second workbench 6 are arranged in parallel; optionally, the first workbench 2 and the second workbench 6 are both arranged as rectangular metal plates;

[0030] An armature positioning fork 9 is provided on the first workbench 2; an armature positioning block and an optical axis 4 are provided on the second workbench 6; the optical axis 4 is slidably connected to the first workbench 2 at one end away from the second workbench 6; a limiting column 8 is vertically provided on the second workbench 6, close to the side of the first workbench 2.

[0031] A limiting column 8 is vertically arranged on the first workbench 2 . It can be understood that the axial direction of the limiting column 8 is vertical to the first workbench 2 .

[0032] Through the above arrangement, when working, the commutator is arranged or installed on the armature positioning block, and after the armature positioning fork 9 is installed on the rotor, the rotor shaft is pressed into the central axis hole of the commutator by external force. During the pressing process, the optical axis 4 ensures the stability and accuracy of the pressing, and the limit column 8 can limit the pressing distance, avoiding problems such as excessive pressing. The commutator pressing device in this embodiment is safe to use, easy to operate, and the commutator is accurately pressed and positioned with high quality.

[0033] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the armature positioning fork 9 includes a fixing plate 901, and a long slot 902 and a fork structure 903 arranged on the fixing plate 901; the fixing plate 901 is fixed to the first workbench 2 through the long slot 901 and bolts and other components.

[0034] Optionally, the fixing plate 901 is a metal plate; bolt holes are provided on the first workbench 2, and the fixing plate 901 is fixed to the first workbench 2 by means of bolts and the long slots 902; the angle between the fork structure 903 and the armature positioning block can be adjusted by adjusting the position of the bolts on the long slots 902, so that the rotor shaft and the commutator can be better aligned in the center. Figure 2 As shown, the fork structure 903 includes two elastic metal sheets. When working, the rotor shaft is clamped between the two metal sheets to achieve the installation of the rotor on the armature positioning fork 9.

[0035] In this embodiment, the optical axis 4 is slidably connected to the first workbench 2 via a flange linear bearing 10. The flange linear bearing can be mounted on the first workbench 2 via screws 11; it can be understood that the optical axis 4 can slide circumferentially in the flange linear bearing 10.

[0036] In this embodiment, a stopper 3 is provided on the flange linear bearing 10 , and the stopper 3 can limit the rising distance of the uppermost end of the optical axis 4 , and together with the limiting column 8 limit the downward moving distance of the first workbench 2 .

[0037] Optionally, optical axes 4 are provided at both ends of the second workbench 6 to further improve the stability during the press-fitting process.

[0038] A spring 5 is sleeved on the optical axis 4; the two ends of the spring 5 are respectively in contact with the first workbench 2 and the second workbench 6. The arrangement of the spring 5 can make the first workbench 2 automatically reset after the sequential press-fitting work is completed, thereby improving the efficiency of batch press-fitting work; at the same time, the arrangement of the spring 5 can play a certain buffering role and improve stability.

[0039] In this embodiment, spring inner sleeves 14 are provided at both ends of the optical axis 4; both ends of the spring can be fixed to the spring inner sleeves 14 by welding or interference connection, so as to improve the stability of the spring.

[0040] In some embodiments, a second armature positioning block 15 is provided on the second workbench 6 by welding or the like; a first armature positioning block 13 is detachably provided on the second armature positioning block 15 by a connecting member 12. It can be understood that the structure of the first armature positioning block 13 can be adapted according to the size and structure of the commutator to be installed, thereby improving flexibility. The connecting member 12 can be connected by a threaded connection, a screw or a hexagon socket or other structural connection.

[0041] In this embodiment, there are multiple limiting columns 8, for example, two, and the lengths of the multiple limiting columns 8 are equal, thereby ensuring the stability of the limiting between the first workbench 2 and the second workbench 6.

[0042] In some embodiments, the second workbench 6 is arranged on a base 7, and the base 7 can be arranged according to a specific working position or space, etc. A pressing head 1 is also included, and the pressing head 1 can be arranged on an external press or other device by welding or bolt connection, and the pressing head 1 is pushed by the press to provide a driving force for the press-fitting process.

[0043] The working process or principle of this implementation is:

[0044] With the aid of the base 7, the entire device is mounted on a power device such as a press;

[0045] Install the pressure head 1 to the power output end of a power device such as a press;

[0046] Install the rotor and the commutator onto the armature positioning fork 9 and the first armature positioning block 13 respectively;

[0047] The pressing head 1 is pushed by a power device such as a press, so as to press-fit the rotating shaft and the commutator of the rotor; during the pressing process, the spring 5 is compressed;

[0048] During the press-fitting process, the limiting column limits the first working platform 2;

[0049] After the press-fitting is completed, the press head 1 is reset; under the elastic force of the spring 5, the first working platform 2 is reset.

[0050] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A brush motor commutator press-fitting device, characterized in that: It includes a first workbench and a second workbench arranged in parallel; An armature positioning fork is arranged on the first workbench; an armature positioning block and an optical axis are arranged on the second workbench; the optical axis is slidably connected to the first workbench at one end away from the second workbench; a limiting column is vertically arranged on the second workbench, on one side close to the first workbench.

2. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: The armature positioning fork comprises a fixing plate, and a long slot and a fork structure arranged on the fixing plate; the fixing plate is fixed to the first workbench through the long slot and bolts.

3. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: The optical axis is slidably connected to the first workbench via a flange linear bearing.

4. A brush motor commutator press-fitting device as claimed in claim 3, characterized in that: A stopper is arranged on the flange linear bearing.

5. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: Optical axes are arranged at both ends of the second workbench.

6. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: A spring is sleeved on the optical axis; two ends of the spring are in contact with the first workbench and the second workbench respectively.

7. A brush motor commutator press-fitting device as claimed in claim 6, characterized in that: Spring inner sleeves are arranged at both ends of the optical axis.

8. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: The second workbench is provided with a second armature positioning block; the second armature positioning block is detachably provided with a first armature positioning block.

9. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: There are multiple limiting columns, and the lengths of the multiple limiting columns are equal.

10. A brush motor commutator press-fitting device as claimed in claim 1, characterized in that: Also includes the pressure head.

Images