New energy motor shell inner hole measuring device

Abstract

The invention discloses a new energy motor shell inner hole measuring device, and the device comprises a measuring mechanism which is provided with a measuring head which is in contact with the inner hole wall of a to-be-detected motor shell; the recording mechanism is arranged to be linked with the measuring head of the measuring mechanism so as to record the size of the inner hole wall of the motor shell represented by the movement of the measuring head along the inner hole wall; the transmission mechanism is respectively connected with the measuring mechanism and the recording mechanism; wherein when the transmission mechanism drives the measuring mechanism to measure the inner hole of the motor shell to be detected, the measuring head slides on the wall of the inner hole, measures the wall of the inner hole, and drives the recording mechanism to record the size of the wall of the inner hole of the motor shell.

Description

Technical Field

[0001] The invention relates to a measuring device, in particular to an inner hole measuring device. Background Art

[0002] The accuracy of the inner hole of the motor housing directly affects the performance of the motor. For example, the dimensional accuracy of the inner hole will affect the air gap between the motor rotor and the stator. If the air gap is uneven, it will cause uneven distribution of the motor magnetic field, thereby increasing the loss of the motor and reducing the efficiency of the motor. At the same time, it will also cause vibration and noise during the operation of the motor, affecting the stability and service life of the motor.

[0003] The shape accuracy of the inner hole, such as cylindricity and roundness, is also very critical. An inaccurate shape will cause the motor rotor to be subjected to uneven radial force during rotation, aggravating the wear of the bearings and may even cause friction between the rotor and the stator, damaging the motor.

[0004] For new energy vehicle motors, high-precision inner holes are also beneficial to improving the power density of the motors, because precise inner holes can make the magnetic field and current distribution inside the motor more reasonable, thereby outputting higher power in the same volume.

[0005] Based on this, it is necessary to measure the inner hole of the motor housing. The most commonly used measuring device at present is a three-dimensional coordinate measuring machine, which obtains the three-dimensional coordinate information of the surface of the object by contacting the probe with the surface of the object to be measured. For the measurement of the inner hole of the motor housing, the motor housing is fixed on the measuring platform, and the probe of the measuring machine is moved to the position of the inner hole. The size, shape and other parameters of the inner hole are determined by touching multiple points on the inner hole wall. However, the current three-dimensional coordinate measuring machine is expensive and requires a high level of technical skills of the personnel. Summary of the invention

[0006] The object of the present invention is to provide a device for measuring the inner hole of a new energy motor housing, which can quickly and conveniently measure the inner hole of a new energy motor housing.

[0007] In order to achieve the above object, the present invention proposes a new energy motor housing inner hole measuring device, which comprises:

[0008] A measuring mechanism having a measuring head in contact with the inner hole wall of the motor housing to be tested;

[0009] A recording mechanism, which is arranged to be linked with the measuring head of the measuring mechanism to record the size of the inner hole wall of the motor housing represented by the movement of the measuring head along the inner hole wall;

[0010] A transmission mechanism, which is connected to the measuring mechanism and the recording mechanism respectively;

[0011] When the transmission mechanism drives the measuring mechanism to measure the inner hole of the motor housing to be inspected, the measuring head slides on the inner hole wall and measures the inner hole wall, and drives the recording mechanism to record the size of the inner hole wall of the motor housing.

[0012] The present invention enables the measuring head to perform a spiral motion in the inner hole of the motor housing through a transmission mechanism, and the surface size of the inner hole of the motor housing on the spiral track is recorded, so that the size information of the inner hole wall of the motor housing can be approximately obtained.

[0013] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, the measuring mechanism also includes:

[0014] A hollow shaft, which is sleeved in the inner hole of the motor housing to be detected, the hollow shaft is movably connected with the transmission mechanism and can be driven by the transmission mechanism to rotate around the axis of the hollow shaft, a spiral groove is provided on the outer circumferential surface of the hollow shaft, and the transmission mechanism is cooperatively connected with the spiral groove;

[0015] A tapered rod having a tapered portion, the tapered rod passes through the hollow shaft along the axis of the hollow shaft and is movably connected inside the hollow shaft, and the tail end of the tapered rod is connected to the recording mechanism;

[0016] A measuring lever, which is movably arranged in the hollow shaft through a measuring lever rotating shaft and can rotate around the measuring lever rotating shaft, the head end of the measuring lever extends from the hollow shaft, and the measuring head is arranged at the head end of the measuring lever;

[0017] The measuring lever spring is arranged between the hollow shaft and the tapered portion so that the tail end of the measuring lever is in abutting contact with the tapered portion and the measuring head is in abutting contact with the inner hole wall.

[0018] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, the measuring mechanism also includes:

[0019] The elastic element is sleeved outside the tapered rod and is arranged between the hollow shaft and the tapered portion in abutting relationship along the axis direction of the hollow shaft.

[0020] Furthermore, the new energy motor housing inner hole measuring device described in the present invention also includes a vertically arranged main shaft seat, and the hollow shaft is movably connected to the main shaft seat so that the hollow shaft can rotate around its own axis.

[0021] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, the recording mechanism includes:

[0022] A writing board connected to the transmission mechanism so as to move up and down in a vertical direction under the drive of the transmission mechanism;

[0023] A recording pen is fixedly connected to the tail end of the tapered rod, and the recording pen is in contact with the writing board.

[0024] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, the recording mechanism also includes a column, and the writing board is slidably connected to the column to move up and down in the vertical direction along the column.

[0025] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, the transmission mechanism includes:

[0026] A gear which is rotatably arranged around its axis;

[0027] A driving rack and a rack slide are respectively arranged on both sides of the gear and are respectively meshed with the gear; the motor housing to be detected is arranged on the rack slide;

[0028] An L-shaped lever is rotatably arranged through its central rotating shaft, the tail end of the L-shaped lever is movably connected to the driving rack, and the head end of the L-shaped lever is movably connected to the writing board;

[0029] The lever has a rear end fixedly connected to the rack slide and a head end inserted into the spiral groove.

[0030] Furthermore, in the new energy motor housing inner hole measuring device described in the present invention, a positioning pin is provided on the rack slide, and the motor housing to be inspected is set on the rack slide through the positioning pin.

[0031] Furthermore, the new energy motor housing inner hole measuring device described in the present invention also includes a handle, which is connected to the gear to drive the gear to rotate around its axis.

[0032] Furthermore, the new energy motor housing inner hole measuring device described in the present invention also includes a base, and the transmission mechanism is arranged on the base.

[0033] The new energy motor housing inner hole measuring device described in the present invention can quickly and conveniently measure the inner hole of the new energy motor housing, so it has high production efficiency, low skill requirements for operators, simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the three-dimensional structure of the new energy motor housing inner hole measuring device described in the present invention in one embodiment is shown from one perspective.

[0035] Figure 2From another perspective, the device for measuring the inner hole of a new energy motor housing according to the present invention is shown measuring the inner hole wall of a motor housing in one embodiment.

[0036] Figure 3 for Figure 1 A partial enlarged view of point II in the middle.

[0037] Figure 4 A side view of a new energy motor housing inner hole measuring device according to the present invention is shown in one embodiment.

[0038] Figure 5 Shows Figure 4 Cross-sectional view at AA in the middle.

[0039] Figure 6 The spiral groove on the hollow shaft of the new energy motor housing inner hole measuring device described in the present invention is shown in one embodiment.

[0040] Figure 7 The structure of a writing board of the new energy motor housing inner hole measuring device described in the present invention in one embodiment is shown.

[0041] Figure 8 A front view of the new energy motor housing inner hole measuring device according to one embodiment of the present invention is shown.

[0042] Fig. 9 Shows Figure 8 Cross-sectional view at CC.

[0043] Fig.10 A positioning pin of the new energy motor housing inner hole measuring device according to one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0044] The new energy motor housing inner hole measuring device described in the present invention will be further explained and illustrated below in conjunction with the drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.

[0045] Figure 1 A schematic diagram of the three-dimensional structure of the new energy motor housing inner hole measuring device described in the present invention in one embodiment is shown from one perspective.

[0046] Figure 2 From another perspective, the device for measuring the inner hole of a new energy motor housing according to the present invention is shown measuring the inner hole wall of a motor housing in one embodiment.

[0047] Figure 3 for Figure 1 A partial enlarged view of point II in the middle.

[0048] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the new energy motor housing inner hole measuring device may include: a measuring mechanism 100, which has a measuring head 101 in contact with the inner hole wall of the motor housing P to be inspected; a recording mechanism 200, which is configured to be linked with the measuring head 101 of the measuring mechanism 100 to record the size of the inner hole wall of the motor housing represented by the movement of the measuring head 101 along the inner hole wall; a transmission mechanism 300, which is respectively connected to the measuring mechanism 100 and the recording mechanism 200.

[0049] When the transmission mechanism 300 drives the measuring mechanism 100 to measure the inner hole of the motor housing P to be inspected, the measuring head 101 slides on the inner hole wall to measure the inner hole wall, and drives the recording mechanism 200 to record the size of the inner hole wall of the motor housing.

[0050] Figure 4 A side view of a new energy motor housing inner hole measuring device according to the present invention is shown in one embodiment.

[0051] Figure 5 Shows Figure 4 Cross-sectional view at AA in the middle.

[0052] like Figure 4 and Figure 5 As shown, in some more specific embodiments, the measuring mechanism 100 further includes: a hollow shaft 102, which is sleeved in the inner hole of the motor housing P to be detected, and the hollow shaft 102 is movably connected to the transmission mechanism 300 and can be driven by the transmission mechanism 300 to rotate around the axis of the hollow shaft, such as Figure 6 As shown, a spiral groove 1021 is provided on the outer circumferential surface of the hollow shaft 102 , and the transmission mechanism 300 is cooperatively connected with the spiral groove 1021 .

[0053] like Figure 2 As shown, in some more specific embodiments, the hollow shaft 102 can be rotatably disposed via spindle seats 107 disposed at two axial ends thereof.

[0054] like Figure 2 As shown, in some more specific embodiments, the spindle seat 107 can be disposed on the base 400 .

[0055] In addition, the measuring mechanism 100 further includes a tapered rod 103 having a tapered portion 1031 . The tapered rod 103 penetrates the hollow shaft 102 along the axis of the hollow shaft 102 and is movably connected inside the hollow shaft 102 . The tail end of the tapered rod 103 is connected to the recording mechanism 200 .

[0056] The measuring lever 104 is movably arranged in the hollow shaft 102 through the measuring lever rotating shaft 105 and can rotate around the measuring lever rotating shaft 105. Figure 1 As shown, for example, the measuring lever shaft 105 can be fixedly inserted into the hole of the hollow shaft, and at the same time, the head end of the measuring lever 104 extends from the hollow shaft 102, and the measuring head 101 is arranged at the head end of the measuring lever 104, so that the measuring head 101 can contact the inner hole wall of the motor housing P; the measuring lever spring 109 is arranged between the hollow shaft 102 and the tapered portion 1031 through the spring seat 106 arranged on the hollow shaft 102, so that the tail end of the measuring lever 104 is always in abutment contact with the tapered portion 1031, and the measuring head 101 is in abutment contact with the inner hole wall.

[0057] In some more specific embodiments, the spring seat 106 can be inserted into a square hole on the hollow shaft 102 to achieve a fixed arrangement on the hollow shaft.

[0058] In addition, if Figure 5 As shown, in some embodiments, the measuring mechanism 100 may further include: an elastic element 108, such as a coil spring, which is sleeved outside the conical rod 103 and is arranged to abut between the axial end face of the hollow shaft 102 and the axial step surface of the conical portion 1031 along the axial centerline direction of the hollow shaft, thereby applying a reset elastic force in the axial direction to the conical rod 103.

[0059] As shown in Figure 2, in some embodiments, the recording mechanism 200 includes: a writing board 201, which is connected to the transmission mechanism 300 so as to move up and down in the vertical direction driven by the transmission mechanism; a recording pen 202, which is fixedly connected to the tail end of the conical rod 103, and the recording pen 202 contacts the writing board 201 to record the above-mentioned displacement on the writing board.

[0060] In some more specific embodiments, the recording mechanism 200 further includes a column 203 fixedly disposed on the base 400, and the writing board is slidably connected to the column to move up and down along the column in a vertical direction.

[0061] like Figure 7 As shown, in some more specific embodiments, a connecting portion is provided at the lower end of the writing board 201 , and a dovetail groove 2011 is provided on the connecting portion for sliding connection with the column 203 .

[0062] like Figure 2 and Figure 5 As shown, in some more specific embodiments, the transmission mechanism 300 includes:

[0063] The gear 301 is rotatably arranged on the base 400 around its axis through the gear shaft 305. In some more specific embodiments, the gear shaft 305 is fixedly connected to the gear 301 through the gear pin 306 to drive the gear to rotate. The driving rack 302 and the rack slide 303 are respectively arranged on both sides of the gear 301 and are respectively meshed with the gear 301; the motor housing P to be detected is arranged on the rack slide 303. The L-shaped lever 304 is rotatably arranged on the base 400 through the lever seat 307 fixedly arranged on the base 400. In some more specific embodiments, the L-shaped lever 304 is movably connected to the rotating shaft of the lever seat 307, and the retaining spring 310 axially limits the L-shaped lever 304 on the lever seat 307.

[0064] In addition, the tail end of the L-shaped lever is movably connected to the driving rack 302, and the head end thereof is movably connected to the writing board 201. The lever 308 has its tail end fixedly connected to the rack slide 303, and its head end is inserted into the spiral groove 1021.

[0065] In some more specific embodiments, Figure 8 and Fig. 9 As shown, the rack slide 303 is movably matched with the slide rail 401 on the base 400, so as to achieve a sliding connection with the base 400. The driving rack 302 is slidably connected with the base 400 through the dovetail groove rail 402.

[0066] In some more specific embodiments, Figure 2 As shown, the driving rack pin 309 is inserted into the hole at the end of the driving rack 302, and the driving rack pin 309 is inserted into the vertical through slot of the L-shaped lever 304 and can slide in the vertical through slot, thereby realizing the active connection between the tail end of the L-shaped lever 304 and the driving rack 302. The horizontal through slot of the L-shaped lever 304 and the lever pin 2012 at the bottom of the writing board 201 are movably matched with each other to realize the active connection between the head end of the L-shaped lever 304 and the writing board 201.

[0067] like Fig.10 As shown, in some more specific embodiments, a positioning pin 3031 is provided on the rack slide 303, and the motor housing to be inspected can be set on the rack slide 303 through the positioning pin 3031, so as to move in the axial direction with the rack slide.

[0068] like Figure 2 As shown, in some more specific embodiments, the new energy motor housing inner hole measuring device may further include a handle 500, which is connected to the gear 301 through the gear shaft 305 to drive the gear 301 to rotate around its axis.

[0069] In this way, during measurement, the present invention fixes the motor housing P on the rack slide 303 through the positioning pin 3031. The hollow shaft 102 passes through the motor housing P and is rotatably connected to the two spindle seats 107. The handle 500 is rotated counterclockwise to drive the gear 301 to rotate. The gear 301 then drives the drive rack 302 to move horizontally (i.e., in the axial direction), and drives the L-shaped lever 304 to rotate counterclockwise through the driving rack pin 309. The L-shaped lever 304 drives the writing board 201 to move upward through its horizontal through groove. At the same time, the handle 500 is rotated counterclockwise to drive the rack slide 303 to move horizontally through the rotation of the gear 301, and the lever 308 causes the hollow shaft 102 to rotate around its axis through the spiral groove 1021 on the hollow shaft 102. The inner wall of the motor housing and the measuring head 101 at the end of the measuring lever 104 are always in contact under the action of the measuring lever spring 109. The tail end of the measuring lever 104 contacts the tapered portion of the tapered rod 103. The rotation of the measuring lever 104 around the measuring lever shaft 105 drives the tapered rod 103 to move in the axial direction, thereby causing the recording pen 202 at the tail end of the tapered rod to also move in the axial direction, thereby drawing a curve on the writing board 201 to record the displacement measured by the measuring head 101 on the inner hole wall surface of the motor housing.

[0070] It can be seen that the new energy motor housing inner hole measuring device described in the present invention can quickly and conveniently measure the inner hole of the new energy motor housing, so it has high production efficiency, low skill requirements for operators, and has a simple structure and low cost.

[0071] It should be noted that the prior art in the protection scope of the present invention is not limited to the embodiments given in the present application documents. All prior art that does not contradict the solutions of the present invention, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the present invention.

[0072] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0073] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith can be directly derived or easily associated with by those skilled in the art from the contents disclosed in the present invention, and all should belong to the protection scope of the present invention.

Claims

1. A new energy motor housing inner hole measuring device, characterized in that: include: A measuring mechanism having a measuring head in contact with the inner hole wall of the motor housing to be tested; A recording mechanism, which is arranged to be linked with the measuring head of the measuring mechanism to record the size of the inner hole wall of the motor housing represented by the movement of the measuring head along the inner hole wall; A transmission mechanism, which is connected to the measuring mechanism and the recording mechanism respectively; When the transmission mechanism drives the measuring mechanism to measure the inner hole of the motor housing to be inspected, the measuring head slides on the inner hole wall and measures the inner hole wall, and drives the recording mechanism to record the size of the inner hole wall of the motor housing.

2. The new energy motor housing inner hole measuring device according to claim 1, characterized in that: The measuring mechanism also includes: A hollow shaft, which is sleeved in the inner hole of the motor housing to be detected, the hollow shaft is movably connected with the transmission mechanism and can be driven by the transmission mechanism to rotate around the axis of the hollow shaft, a spiral groove is provided on the outer circumferential surface of the hollow shaft, and the transmission mechanism is cooperatively connected with the spiral groove; A tapered rod having a tapered portion, the tapered rod passes through the hollow shaft along the axis of the hollow shaft and is movably connected inside the hollow shaft, and the tail end of the tapered rod is connected to the recording mechanism; A measuring lever, which is movably arranged in the hollow shaft through a measuring lever rotating shaft and can rotate around the measuring lever rotating shaft, the head end of the measuring lever extends from the hollow shaft, and the measuring head is arranged at the head end of the measuring lever; The measuring lever spring is arranged between the hollow shaft and the tapered portion so that the tail end of the measuring lever is in abutting contact with the tapered portion and the measuring head is in abutting contact with the inner hole wall.

3. The new energy motor housing inner hole measuring device according to claim 2, characterized in that: The measuring mechanism also includes: The elastic element is sleeved outside the tapered rod and is arranged between the hollow shaft and the tapered portion in abutting relationship along the axis direction of the hollow shaft.

4. The new energy motor housing inner hole measuring device according to claim 2, characterized in that: It also includes a vertically arranged main shaft seat, and the hollow shaft is movably connected to the main shaft seat so that the hollow shaft can rotate around its own axis.

5. The new energy motor housing inner hole measuring device as claimed in claim 2, characterized in that: The recording institutions include: A writing board connected to the transmission mechanism so as to move up and down in a vertical direction under the drive of the transmission mechanism; A recording pen is fixedly connected to the tail end of the tapered rod, and the recording pen is in contact with the writing board.

6. The new energy motor housing inner hole measuring device according to claim 5, characterized in that: The recording mechanism also includes a column, and the writing board is slidably connected to the column to move up and down along the column in a vertical direction.

7. The new energy motor housing inner hole measuring device according to claim 5, characterized in that: The transmission mechanism comprises: A gear which is rotatably arranged around its axis; A driving rack and a rack slide are respectively arranged on both sides of the gear and are respectively meshed with the gear; the motor housing to be detected is arranged on the rack slide; An L-shaped lever is rotatably arranged through its central rotating shaft, the tail end of the L-shaped lever is movably connected to the driving rack, and the head end of the L-shaped lever is movably connected to the writing board; The lever has a rear end fixedly connected to the rack slide and a head end inserted into the spiral groove.

8. The new energy motor housing inner hole measuring device as claimed in claim 7, characterized in that: The rack slide is provided with a positioning pin, and the motor housing to be detected is arranged on the rack slide through the positioning pin.

9. The new energy motor housing inner hole measuring device according to claim 7, characterized in that: The invention also comprises a handle which is connected with the gear to drive the gear to rotate around its axis.

10. The new energy motor housing inner hole measuring device according to claim 1, characterized in that: It also includes a base, and the transmission mechanism is arranged on the base.

Images