Shaft milling and keying device

Abstract

This utility model discloses a motor shaft key clamping device, comprising: a base and a pair of center positioning devices; a pair of slide rails are fixed on the base, a fixed top seat is fixed at one end of the base, a first clamping head is fixed on the fixed top seat near the slide rails, a first slider is slidably arranged on the pair of slide rails, a clamping body is fixed on the first slider, and a control shaft is slidably arranged inside the clamping body; the pair of center positioning devices slide on the pair of slide rails, each center positioning device including a second slider, a pair of supports are fixed at both ends of the second slider, threaded rods are slidably arranged on each of the supports, positioning claws are fixed at both ends of the threaded rods that are close to each other, and threaded sleeves are threadedly connected to the supports on the threaded rods. Through its structural design, this utility model enables the device to clamp motor shafts of different diameters, reducing the steps of changing different clamps and thus effectively improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, specifically relating to a motor shaft milling key clamping device. Background Technology

[0002] In the field of motor manufacturing technology, keyways need to be milled at both ends of the motor shaft using machine tools. Milling keyways on the motor shaft is a necessary process in motor shaft machining. When milling keyways, fixtures are needed to reliably clamp the motor shaft to prevent it from moving freely and vibrating.

[0003] However, existing motor shafts are generally multi-stage stepped shafts composed of multiple cylindrical sections with different diameters. For the ends with different clamping diameters, the size of the clamp must be specially designed according to the workpiece size, which is time-consuming, labor-intensive, inconvenient to operate, and reduces work efficiency.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a motor shaft key clamping device.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a motor shaft key clamping device, which can solve the problem that existing clamping devices cannot be used to clamp motor shafts of different diameters.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a motor shaft milling key clamping device, comprising: a base and a pair of center positioning devices;

[0008] A pair of slide rails are fixed on the base, and a fixed top seat is fixed at one end of the base. A first clamping head is fixed on the fixed top seat near the slide rails. A first slider is slidably arranged on the pair of slide rails. A clamping body is fixed on the first slider. A control shaft is slidably arranged in the clamping body. A second clamping head is fixed at the end of the control shaft near the first clamping head. A control cone is fixed at the end of the control shaft away from the second clamping head. Multiple rotating arms are rotatably arranged on the clamping body. A clamping claw and a control head are fixed at the two ends of the rotating arms near the second clamping head and the control cone, respectively. A push rod is installed on the side of the first slider away from the fixed top seat.

[0009] A pair of central positioning devices slide on a pair of slide rails. Each central positioning device includes a second slider. A pair of supports are fixed at both ends of the second slider. A threaded rod is slidably provided on each of the supports. Positioning claws are fixed at both ends of the pair of threaded rods that are close to each other. A threaded sleeve is threadedly connected to the support on the threaded rod. A first gear is fixed on the threaded sleeve. A rotating shaft is inserted into each of the supports. A second gear is fixed inside each of the supports on the rotating shaft. The second gear and the first gear mesh with each other.

[0010] In one or more embodiments of this utility model, the base has two pairs of mounting holes, and bolts are used to fix the base to the workbench through the mounting holes.

[0011] In one or more embodiments of this utility model, a pair of contact round heads are fixed on the end of the clamping claw. Through the pair of spherical contact round heads, when clamping motor shafts of different diameters, the pair of contact round heads can fit well with the surface of the motor shaft and clamp it.

[0012] In one or more embodiments of this utility model, a first pulley is rotatably provided on the end of the control head. By providing the first pulley, the friction between the control head and the control vertebra is reduced when the control vertebra pushes the control head.

[0013] In one or more embodiments of this utility model, a spring is installed between the second clamping head and the inner wall of the clamping body, and the spring force is used to push the second clamping head toward the first clamping head.

[0014] In one or more embodiments of this utility model, a threaded seat is fixed on the side wall of the base near the first slider. The threaded seat is threadedly connected to the push rod. When the push rod is rotated, the threaded seat causes the push rod to move back and forth, thereby causing the push rod to drive the first slider to move.

[0015] In one or more embodiments of this utility model, a first handle is fixed on the push rod, and the first handle is used to rotate the push rod.

[0016] In one or more embodiments of this utility model, a pair of grooves are chiseled on the threaded rod, and two pairs of retaining strips are fixed on the support. The retaining strips slide in the grooves, so that the threaded rod can only slide relative to the support and cannot rotate. When the threaded sleeve rotates, it drives the threaded rod to slide on the support.

[0017] In one or more embodiments of this utility model, two pairs of second pulleys are fixed on the positioning claw. By setting the second pulleys, the motor shaft can slide easily when the clamping body motor axial fixing top seat clamps after the center positioning device performs center calibration of the motor shaft.

[0018] In one or more embodiments of this utility model, a second handle is fixed at one end of the rotating shaft outside the support, and the second handle is used to drive the rotating shaft to rotate.

[0019] Compared with the prior art, this utility model, through its related structural design, enables the device to be used for clamping motor shafts of different diameters, reducing the steps of changing different clamps and thus effectively improving work efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a motor shaft key clamping device according to an embodiment of the present invention;

[0022] Figure 2 This is a perspective view of a motor shaft milling key clamping device according to one embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the clamping body in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the rotating arm in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the center positioning device in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the support structure in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the threaded sleeve and threaded rod in one embodiment of the present invention.

[0028] Explanation of key figure labels:

[0029] 1-Base, 101-Mounting hole, 102-Fixed top seat, 103-First clamping head, 104-Slide rail, 105-First slider, 106-Clamping body, 107-Control shaft, 108-Second clamping head, 109-Control cone, 110-Rotating arm, 111-Clamping claw, 112-Control head, 113-Spring, 114-Contact round head, 115-First pulley, 116-Threaded seat, 117-Push rod, 118-First handle, 2-Center positioning device, 201-Second slider, 202-Support, 203-Threaded sleeve, 204-Threaded rod, 205-Positioning claw, 206-First gear, 207-Second gear, 208-Rotating shaft, 209-Second handle, 210-Second pulley, 211-Slide groove, 212-Clamping bar. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] like Figures 1 to 7 As shown, a motor shaft milling key clamping device in one embodiment of the present invention includes: a base 1 and a pair of center positioning devices 2.

[0032] like Figures 1 to 4 As shown, a pair of slide rails 104 are fixed on the base 1, and a fixed top seat 102 is fixed to one end of the base 1. A first clamping head 103 is fixed on the fixed top seat 102 near the slide rails 104. A first slider 105 is slidably arranged on the pair of slide rails 104. A clamping body 106 is fixed on the first slider 105. A control shaft 107 is slidably arranged inside the clamping body 106. A second clamping head 108 is fixed to one end of the control shaft 107 near the first clamping head 103. When clamping the motor shaft, the first slider 105 is pushed along the track of the slide rails 104 toward the fixed top seat 102. The first slider 105 drives the clamping body 106 to move. The clamping body 106 drives the control shaft 107 to move. Then the second clamping head 108 and the first clamping head 103 clamp the motor shaft in the middle.

[0033] like Figures 1 to 4As shown, a control cone 109 is fixed to one end of the control shaft 107 away from the second clamping head 108. Multiple rotating arms 110 are rotatably mounted on the clamping body 106. Clamping claws 111 and control heads 112 are fixed to the ends of the rotating arms 110 near the second clamping head 108 and the control cone 109, respectively. When the clamping body 106 drives the control shaft 107 to clamp the motor shaft, the second clamping head 108, upon contacting the motor shaft, will be pushed towards the control cone 109. The second clamping head 108, through the control shaft 107, drives the control cone 109 to move. The control cone 109 pushes the control head 112 outward, causing the rotating arm 110 to rotate. The rotation of the rotating arm 110 causes the clamping claws 111 to clamp the motor shaft. A push rod 117 is installed on the side of the first slider 105 away from the fixed top seat 102. The push rod 117 is used to move the first slider 105.

[0034] like Figures 1 to 4 As shown, the base 1 has two pairs of mounting holes 101. Bolts are used to fix the base 1 to the worktable through the mounting holes 101. A pair of contact round heads 114 are fixed to the end of the clamping jaws 111. These spherical contact round heads 114 ensure good contact and clamping with the motor shaft surface when clamping motor shafts of different diameters. A first pulley 115 is rotatably mounted on the end of the control head 112. By using the first pulley 115, the friction between the control head 112 and the control cone 109 is reduced when the control cone 109 pushes the control head 112.

[0035] like Figures 1 to 4 As shown, a spring 113 is installed between the second clamping head 108 and the inner wall of the clamping body 106. The elastic force of the spring 113 is used to push the second clamping head 108 towards the first clamping head 103. A threaded seat 116 is fixed on the side wall of the base 1 near the first slider 105. The threaded seat 116 is threadedly connected to the push rod 117. When the push rod 117 is rotated, the threaded seat 116 causes the push rod 117 to move back and forth, thereby causing the push rod 117 to drive the first slider 105 to move. A first handle 118 is fixed on the push rod 117. The first handle 118 is used to rotate the push rod 117.

[0036] like Figures 5 to 7As shown, a pair of center positioning devices 2 slide on a pair of slide rails 104. The center positioning device 2 includes a second slider 201. A pair of supports 202 are fixed at both ends of the second slider 201. A threaded rod 204 is slidably provided on each of the supports 202. A positioning claw 205 is fixed at both ends of the pair of threaded rods 204 that are close to each other. A threaded sleeve 203 is threadedly connected to the threaded rod 204 inside the support 202. A first gear 206 is fixed on the threaded sleeve 203. A rotating shaft 208 is inserted into the pair of supports 202. A second gear 207 is fixed on the rotating shaft 208 inside the pair of supports 202. The second gear 207 and the first gear 206 mesh with each other.

[0037] like Figures 5 to 7 As shown, when aligning the motor shaft, a pair of center positioning devices 2 are slid on the slide rail 104 and moved to the appropriate position. Then, the second handle 209 is rotated, which drives a pair of second gears 207 to rotate. The second gears 207 drive the threaded sleeve 203 to rotate through the first gear 206. The rotation of the threaded sleeve 203 drives the threaded rod 204 to move toward the motor shaft. The pair of threaded rods 204 drive the positioning claws 205 to approach the motor shaft and clamp the motor shaft in the center position. Then, lateral clamping is performed.

[0038] like Figures 5 to 7 As shown, a pair of grooves 211 are cut into the threaded rod 204, and two pairs of retaining strips 212 are fixed on the support 202. The retaining strips 212 slide in the grooves 211. By sliding the retaining strips 212 in the grooves 211, the threaded rod 204 can only slide relative to the support 202 and cannot rotate. Thus, when the threaded sleeve 203 rotates, it drives the threaded rod 204 to slide on the support 202.

[0039] like Figures 5 to 7 As shown, two pairs of second pulleys 210 are fixed on the positioning claw 205. By setting the second pulleys 210, the motor shaft can slide easily when the clamping body 106 clamps the motor shaft after the center positioning device 2 performs center calibration on the motor shaft and the motor axial fixing top seat 102 clamps it. A second handle 209 is fixed to one end of the rotating shaft 208 outside the support 202. The second handle 209 is used to drive the rotating shaft 208 to rotate.

[0040] In terms of working principle and specific use, the center position of the motor shaft needs to be calibrated first, so that the axis of the motor shaft is on the same straight line as the axis of the first clamping head 103 and the second clamping head 108. During calibration, the pair of center positioning devices 2 are first slid on the slide rail 104 and moved to the appropriate position. Then, the second handle 209 is rotated. The second handle 209 drives the pair of second gears 207 to rotate. The second gears 207 drive the threaded sleeve 203 to rotate through the first gear 206. The rotation of the threaded sleeve 203 drives the threaded rod 204 to move towards the motor shaft. The pair of threaded rods 204 drive the positioning claws 205 to approach the motor shaft and clamp the motor shaft in the center position, so that the axis of the motor shaft is on the same straight line as the axis of the first clamping head 103 and the second clamping head 108.

[0041] The motor shaft is then clamped. The first handle 118 drives the push rod 117 to rotate. After the push rod 117 rotates, the threaded seat 116 moves it towards the fixed top seat 102. The push rod 117 pushes the first slider 105 to move towards the fixed top seat 102. The first slider 105 drives the clamping body 106 to move. The clamping body 106 drives the control shaft 107 to move. Then, the second clamping head 108 and the first clamping head 103 clamp the motor shaft in the middle. When the clamping body 106 drives the control shaft 107 to clamp the motor shaft, the second clamping head 108 will be pushed towards the control cone 109 after contacting the motor shaft. The second clamping head 108 drives the control cone 109 to move through the control shaft 107. The control cone 109 pushes the control head 112 outward to make the rotating arm 110 rotate. When the rotating arm 110 rotates, it drives the clamping claw 111 to clamp the motor shaft.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A motor shaft key clamping device, characterized in that, include: A base, on which a pair of slide rails are fixed, and a fixed top seat is fixed at one end of the base. A first clamping head is fixed on the fixed top seat near the slide rails. A first slider is slidably arranged on the pair of slide rails. A clamping body is fixed on the first slider. A control shaft is slidably arranged in the clamping body. A second clamping head is fixed at the end of the control shaft near the first clamping head. A control cone is fixed at the end of the control shaft away from the second clamping head. Multiple rotating arms are rotatably arranged on the clamping body. A clamping claw and a control head are fixed at the two ends of the rotating arms near the second clamping head and the control cone, respectively. A push rod is installed on the side of the first slider away from the fixed top seat. A pair of center positioning devices slide on a pair of slide rails. Each center positioning device includes a second slider. A pair of supports are fixed at both ends of the second slider. A threaded rod is slidably provided on each of the supports. Positioning claws are fixed at both ends of the threaded rods that are close to each other. A threaded sleeve is threadedly connected to the support on the threaded rod. A first gear is fixed on the threaded sleeve. A rotating shaft is inserted into the pair of supports. A second gear is fixed inside each of the supports on the rotating shaft. The second gear and the first gear mesh with each other.

2. The motor shaft milling key clamping device according to claim 1, characterized in that, The base has two pairs of mounting holes.

3. The motor shaft key clamping device according to claim 1, characterized in that, A pair of contact round heads are fixed to the end of the clamping claw.

4. The motor shaft milling key clamping device according to claim 3, characterized in that, The control head is equipped with a first pulley that rotates on its end.

5. The motor shaft milling key clamping device according to claim 1, characterized in that, A spring is installed between the second clamping head and the inner wall of the clamping body.

6. The motor shaft milling key clamping device according to claim 1, characterized in that, A threaded seat is fixed on the side wall of the base near the first slider, and the threaded seat is threadedly connected to the push rod.

7. A motor shaft milling key clamping device according to claim 6, characterized in that, A first handle is fixed to the push rod.

8. The motor shaft milling key clamping device according to claim 1, characterized in that, The threaded rod has a pair of grooves, and the support has two pairs of retaining bars that slide in the grooves.

9. A motor shaft key clamping device according to claim 1, characterized in that, Two pairs of second pulleys are fixed on the positioning claw.

10. A motor shaft key clamping device according to claim 1, characterized in that, A second handle is fixed to one end of the rotating shaft located outside the support.

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