Shaft end plug riveting device of motor shaft

Abstract

The shaft end plug riveting device comprises a squeeze riveter body, a workbench is arranged at the bottom of the squeeze riveter body, a rack is connected to the workbench, a lifting device is connected to the top end of the rack, a riveting head is connected to the power output end of the lifting device, and a jig is detachably connected to the workbench. The jig is of an upper and lower split structure, the lower portion of the jig is an accommodating portion, the lower portion of the jig is a reference portion, the accommodating portion is provided with an accommodating groove matched with the outline of the motor shaft, the reference portion is provided with a positioning groove, and when the motor shaft is placed in the accommodating groove and the positioning groove, the riveting head and the motor shaft are concentric. Compared with the prior art, the jig has the advantages that the jig is of an up-down split structure, the accommodating part is used for placing the motor shaft without considering the precision of the motor shaft, the smaller reference part is used for placing the motor shaft and positioning the motor shaft, so that only the precision of the positioning groove on the reference part needs to be ensured, the positioning groove is shorter, the processing difficulty is low, and the processing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting and pressing devices, in particular to a shaft end plug riveting and pressing device for a motor shaft. Background Art

[0002] As a core component of new energy vehicles, the drive motor, the motor shaft is a key part in the whole drive motor, which is used to fix the rotor core and transmit torque.

[0003] As Figure 1 As shown in the figure, a central hole 301 is axially provided in the motor shaft 3, and a plug 4 is in interference fit at one end of the central hole 301. The plug 4 is press-fitted into the motor shaft 301 through a riveting and pressing device. In the prior art, the jig for placing the motor shaft is an integral structure, and the accommodating grooves of the jig are the positioning references for the motor shaft. In this case, the accuracy requirements for the accommodating grooves are relatively high. Due to the long length of the motor shaft, the machining difficulty of the accommodating grooves is large, and the machining cost is high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a shaft end plug riveting and pressing device for a motor shaft, which sets the jig into an upper and lower split structure. The accommodating part is used to place the motor shaft without considering its accuracy, while the smaller reference part is used to place and position the motor shaft. In this way, only the accuracy of the positioning groove on the reference part needs to be ensured. The positioning groove is short, the machining difficulty is small, and the machining cost is low, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shaft end plug riveting and pressing device for a motor shaft includes a riveting press body. The bottom of the riveting press body is a workbench, and a frame is connected to the workbench. The top of the frame is connected with a lifting device, and the power output end of the lifting device is connected with a riveting head. The jig is detachably connected to the workbench; the jig is an upper and lower split structure, the lower part is an accommodating part, and the lower part is a reference part. An accommodating groove adapted to the contour of the motor shaft is provided on the accommodating part, and a positioning groove is provided on the reference part. When the motor shaft is placed in the accommodating groove and the positioning groove, the riveting head is concentric with the motor shaft.

[0007] A further improvement of the utility model is that the lifting device is an oil cylinder. The power output end of the oil cylinder is connected with a lifting plate, the bottom of the lifting plate is connected with a stepped shaft, and the top of the riveting head is connected with a bushing. The bushing is connected to the bottom end of the stepped shaft through a fastening screw.

[0008] A further improvement of the utility model is that guide rods are symmetrically connected to the lifting plate, and sliding sleeves are connected to the frame. The guide rods are slidably fitted in the sliding sleeves.

[0009] A further improvement of the present utility model is that the accommodating part is integrally formed, the bottom end of the accommodating part is a base, and the accommodating groove is opened directly in front of the jig.

[0010] A further improvement of the present utility model is that a cutting surface is provided at the bottom of the front of the accommodating part.

[0011] A further improvement of the present utility model is that the reference part is connected to the top end of the accommodating part by an internal hexagonal bolt, and the positioning groove is arranged in the same direction as the accommodating groove.

[0012] A further improvement of the present utility model is that a T-shaped groove is provided on the workbench, and the base is connected to the workbench by a T-shaped bolt.

[0013] Advantages of the present utility model:

[0014] For the shaft end plug riveting device of the motor shaft of the present utility model, the jig is set as an upper and lower split structure. The accommodating part is used to place the motor shaft without considering its precision, while the smaller reference part is used to place and position the motor shaft. In this way, only the precision of the positioning groove on the reference part needs to be ensured. The positioning groove is short, the processing difficulty is small, and the processing cost is low.

[0015] For the shaft end plug riveting device of the motor shaft of the present utility model, a cutting surface is provided at the bottom of the front of the accommodating part, and more of the bottom of the motor shaft is exposed, which is convenient for the taking and placing of the motor shaft. Description of the drawings

[0016] Figure 1 It is a structural schematic diagram of the motor shaft and the plug.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 3 It is a front view of the jig of the present utility model.

[0019] Figure 4 For Figure 3 the left view of.

[0020] In the figure: 1 - riveting press body, 101 - workbench, 102 - frame, 103 - riveting head, 104 - oil cylinder, 105 - lifting plate, 106 - stepped shaft, 107 - jacket, 108 - fastening screw, 109 - guide rod, 110 - sliding sleeve, 2 - jig, 201 - accommodating part, 202 - accommodating groove, 203 - reference part, 204 - reference groove, 205 - cutting surface, 206 - base, 3 - motor shaft, 301 - central hole, 4 - plug. Detailed implementation manners

[0021] The following further clarifies the present utility model in conjunction with the drawings and specific embodiments.

[0022] Embodiment 1: As shown in Figures 1 to 4 the figure, a shaft-end plug riveting device for a motor shaft includes a riveting machine body 1. The bottom of the riveting machine body 1 is a workbench 101. A frame 102 is connected to the workbench 101. A lifting device is connected to the top of the frame 102. The power output end of the lifting device is connected to a riveting head 103. A jig 2 is detachably connected to the workbench 101. The jig 2 is a split structure from top to bottom. The lower part is a receiving part 201, and the lower part is a reference part 203. A receiving groove 202 adapted to the contour of the motor shaft 3 is provided on the receiving part 201. A positioning groove 204 is provided on the reference part 203. When the motor shaft 3 is placed in the receiving groove 202 and the positioning groove 204, the riveting head 103 is concentric with the motor shaft 3.

[0023] The lifting device is an oil cylinder 104. The power output end of the oil cylinder 104 is connected to a lifting plate 105. The bottom of the lifting plate 105 is connected to a stepped shaft 106. The top of the riveting head 103 is connected to a collet 107. The collet 107 is connected to the bottom end of the stepped shaft 106 through a fastening screw 108.

[0024] Guide rods 109 are symmetrically connected to the lifting plate 105. A sliding sleeve 110 is connected to the frame 102. The guide rods 109 are slidably engaged with the sliding sleeve 110.

[0025] The receiving part 201 is integrally formed. The bottom end of the receiving part 201 is a base 206. The receiving groove 202 is opened in the front of the jig 2.

[0026] The reference part 203 is connected to the top end of the receiving part 201 through an internal hexagonal bolt. The positioning groove 204 is arranged in the same direction as the receiving groove 202.

[0027] T-shaped grooves are provided on the workbench 101. The base 206 is connected to the workbench 101 through T-shaped bolts.

[0028] Embodiment 2: This embodiment is a further improvement of Embodiment 1. The main improvement lies in that when Embodiment 1 is used, it is inconvenient to take and place the motor shaft 3; while in this embodiment, the above defects can be avoided. Specifically:

[0029] A cut surface 205 is provided at the bottom in the front of the receiving part 201. In this embodiment, a cut surface 205 is provided at the bottom in the front of the receiving part 201, and more of the bottom of the motor shaft 3 is exposed, which is convenient for taking and placing the motor shaft 3.

[0030] Except for this, this embodiment is exactly the same as Embodiment 1 and will not be elaborated here.

[0031] The specific working principle of the present utility model is as follows:

[0032] During operation, the operator places the motor shaft 3 in the receiving groove 202 and the positioning groove 204 of the jig 2, and the top end of the motor shaft 3 protrudes from the top end of the jig 2. The operator places the plug 4 at the center hole 301 at the top end of the motor shaft 3, the oil cylinder 104 extends, and the riveting head 103 moves downward to press the plug 4, and the plug 4 is press-fitted into the motor shaft 3.

[0033] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A riveting device for the shaft end plug of a motor shaft, characterized in that: The invention comprises a riveting machine body (1), wherein the bottom of the riveting machine body (1) is a workbench (101), a frame (102) is connected to the workbench (101), a lifting device is connected to the top of the frame (102), a rivet head (103) is connected to the power output end of the lifting device, and a jig (2) is detachably connected to the workbench (101); the jig (2) is an upper and lower split structure, the lower part is a receiving part (201), and the upper part is a reference part (203), the receiving part (201) is provided with a receiving groove (202) adapted to the contour of the motor shaft (3), the reference part (203) is provided with a positioning groove (204), and when the motor shaft (3) is placed in the receiving groove (202) and the positioning groove (204), the rivet head (103) and the motor shaft (3) are concentric.

2. A motor shaft end plug riveting device as claimed in claim 1, characterized in that: The lifting device is an oil cylinder (104), the power output end of the oil cylinder (104) is connected to a lifting plate (105), the bottom of the lifting plate (105) is connected to a step shaft (106), the top end of the rivet head (103) is connected to a jacket (107), and the jacket (107) is connected to the bottom end of the step shaft (106) via a fastening screw (108).

3. A riveting device for the shaft end plug of a motor shaft as claimed in claim 2, characterized in that: The lifting plate (105) is symmetrically connected to a guide rod (109), the frame (102) is connected to a sliding sleeve (110), and the guide rod (109) is slidably matched with the sliding sleeve (110).

4. A motor shaft end plug riveting device as claimed in claim 1, characterized in that: The accommodating portion (201) is integrally formed, the bottom end of the accommodating portion (201) is a base (206), and the accommodating groove (202) is arranged directly in front of the fixture (2).

5. A riveting device for the shaft end plug of a motor shaft as claimed in claim 4, characterized in that: A cut surface (205) is provided at the bottom directly in front of the accommodating portion (201).

6. A riveting device for the shaft end plug of a motor shaft as claimed in claim 4, characterized in that: The reference portion (203) is connected to the top end of the accommodating portion (201) via a hexagon socket bolt, and the positioning groove (204) is arranged in the same direction as the accommodating groove (202).

7. A riveting device for a motor shaft end plug as claimed in claim 4, characterized in that: The workbench (101) is provided with a T-shaped slot, and the base (206) is connected to the workbench (101) via T-shaped bolts.

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