Motor mandrel circle jump degree detection device

Abstract

The utility model belongs to the field of circle run-out detection, and particularly relates to a motor mandrel circle run-out detection device, which is characterized in that a rotary driving assembly is arranged at the top of a first supporting block through a lifting adjusting mechanism, the rotary driving assembly is provided with a driving motor and a driving wheel connected with an output shaft of the driving motor, and the driving wheel is positioned above a first V-shaped groove; the rotating shaft of the driving wheel is parallel to the length direction of the first V-shaped groove, the driving wheel can be pressed downwards on the central spindle in the first V-shaped groove under the action of the lifting adjusting mechanism, the central spindle is driven to rotate through the rotation of the driving wheel, and the detection of the circular jump degree of the motor central spindle is realized in cooperation with the dial indicator arranged on the lifting support. And compared with circular jump detection by manually rotating the mandrel, the detection result is more accurate, and meanwhile, the workload of detection personnel is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of circular runout detection, in particular to a circular runout detection device for a motor core shaft. Background Art

[0002] Before the motor is completed and assembled, the circular runout of the core shaft needs to be tested to determine whether it meets the requirements. The circular runout detection tools for shaft parts currently on the market are relatively simple in structure, usually including two support blocks with V-shaped grooves and a micrometer set on an adjustable bracket. When in use, the two ends of the shaft part to be tested are placed in the V-shaped grooves on the top of the two support blocks, and the height of the micrometer is adjusted so that the detection probe of the micrometer contacts the outer wall of the shaft part. Then, the shaft part is manually rotated for testing. In the existing technology, the circular runout detection is performed by manually rotating the shaft part. During the rotation process, the shaft part is easily shaken up and down, deviating from its rotation axis, affecting the accuracy of the test results. In addition, when performing large-scale testing, it is easy to cause hand fatigue. Utility Model Content

[0003] An embodiment of the utility model provides a motor core shaft circular runout detection device, which is used to solve the problem that the existing shaft parts circular runout detection tools perform circular runout detection by manually rotating the shaft parts, affecting the accuracy of the detection results and easily causing hand fatigue.

[0004] To achieve the above-mentioned purpose, the present invention provides a motor shaft circular runout detection device, comprising:

[0005] base plate;

[0006] A lifting bracket is provided on the bottom plate;

[0007] a dial indicator, mounted on the lifting bracket;

[0008] A first support block is provided on the bottom plate, wherein a top of the first support block is provided with a first V-shaped groove for supporting the core shaft;

[0009] a second support block, disposed on the bottom plate and spaced apart from the first support block, wherein a second V-shaped groove is provided on the top of the second support block for supporting the core shaft; and

[0010] A rotary drive assembly is arranged on the top of the first support block through a lifting and adjusting mechanism. The rotary drive assembly has a driving motor and a driving wheel connected to the output shaft of the driving motor. The driving wheel is located above the first V-shaped groove. The rotating shaft of the driving wheel is parallel to the length direction of the first V-shaped groove. The driving wheel can abut against the core shaft in the first V-shaped groove under the action of the lifting and adjusting mechanism to drive the core shaft to rotate.

[0011] Optionally, the lifting and lowering adjustment mechanism includes a stud, a mounting seat, a spring and an adjusting nut, the stud is vertically fixed to the top of the first support block, the driving motor is fixed on the mounting seat, the driving wheel is fixed on the output shaft of the driving motor, and the mounting seat is provided with an avoidance hole for the stud to pass through, the spring is sleeved on the stud between the mounting seat and the first support block, and the upper and lower ends of the spring are elastically pressed against the lower surface of the mounting seat and the top of the first support block respectively, and the adjusting nut is screwed onto the stud above the mounting seat.

[0012] Optionally, the lifting and adjusting mechanism further includes a guide column, which is vertically fixed to the top of the first supporting block, and the mounting seat is provided with a through hole which is slidably connected to the guide column.

[0013] Optionally, freely rolling balls are evenly embedded on the groove walls of the first V-shaped groove and the second V-shaped groove, and the balls are used for rolling and supporting the core shaft.

[0014] Optionally, the driving wheel comprises a rubber wheel.

[0015] Optionally, the lifting bracket includes a column, a sleeve, a connecting rod and a locking screw, the column is vertically fixed on the base plate, the sleeve is slidably mounted on the column, one end of the connecting rod is fixedly connected to the outer wall of the sleeve, and the other end of the connecting rod is connected to the micrometer, a threaded through hole is provided on the side wall of the sleeve, the locking screw is installed in the threaded through hole, and the locking screw is used to lock the sleeve to the column.

[0016] Optionally, the motor shaft circular runout detection device also includes a movable plate, which is linearly slidably arranged on the base plate, the first support block is fixed on the movable plate, the second support block is slidably arranged on the movable plate, and the movement direction of the second support block relative to the movable plate is parallel to the movement direction of the movable plate relative to the base plate.

[0017] Optionally, a guide rail is provided on the upper surface of the movable plate, and a slide groove adapted to slide with the guide rail is provided at the bottom of the second support block, and a magnetic component is embedded in the slide groove, and the magnetic component can be magnetically adsorbed to the guide rail.

[0018] The beneficial effect of the motor core shaft circular runout detection device provided by the utility model is that: compared with the prior art, the motor core shaft circular runout detection device of the utility model is arranged by a lifting and adjusting mechanism on the top of the first support block. The rotary drive assembly has a driving motor and a driving wheel connected to the output shaft of the driving motor. The driving wheel is located above the first V-shaped groove, and the rotating shaft of the driving wheel is parallel to the length direction of the first V-shaped groove. The driving wheel can be pressed downward on the core shaft in the first V-shaped groove under the action of the lifting and adjusting mechanism, and the core shaft is driven to rotate by the rotation of the driving wheel. The circular runout of the motor core shaft is detected in conjunction with the micrometer arranged on the lifting bracket. Compared with the circular runout detection by manually rotating the core shaft, the detection result is more accurate, and the workload of the detection personnel is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the overall structure of a motor shaft circular runout detection device shown in one embodiment of the present utility model;

[0022] Figure 2 It is an assembly diagram of the first support block, the lifting adjustment mechanism and the rotation drive component in the motor core shaft circular runout detection device shown in one embodiment of the present utility model.

[0023] Description of main component symbols:

[0024] 100, bottom plate;

[0025] 200, lifting bracket; 210, column; 220, sliding sleeve; 230, connecting rod; 240, locking screw;

[0026] 300, micrometer;

[0027] 410, first support block; 411, first V-shaped groove; 420, second support block; 421, second V-shaped groove;

[0028] 500, rotary drive assembly; 510, drive motor; 520, drive wheel;

[0029] 600, lifting adjustment mechanism; 610, stud; 620, mounting seat; 630, spring; 640, adjusting nut; 650, guide column;

[0030] 700, movable board;

[0031] 800, guide rail;

[0032] 900. Magnetic parts. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] The embodiment of the present utility model provides a device for detecting the circular runout of a motor shaft. Figure 1-Figure 2As shown, the motor spindle circular runout detection device includes a base plate 100, a lifting bracket 200, a dial indicator 300, a first support block 410, a second support block 420, and a rotary drive assembly 500. The lifting bracket 200 is mounted on the base plate 100, and the dial indicator 300 is installed on the lifting bracket 200. The first support block 410 is mounted on the base plate 100, and a first V-shaped groove 411 is defined on the top of the first support block 410 for supporting the spindle. The second support block 420 is mounted on the base plate 100 and spaced apart from the first support block 410. The second support block 420 is defined on the top of the second support block 420 for supporting the spindle. The rotary drive assembly 500 is arranged on the top of the first support block 410 through the lifting and adjusting mechanism 600. The rotary drive assembly 500 has a driving motor 510 and a driving wheel 520 connected to the output shaft of the driving motor 510. The driving wheel 520 is located above the first V-shaped groove 411. The rotating shaft of the driving wheel 520 is parallel to the length direction of the first V-shaped groove 411. Under the action of the lifting and adjusting mechanism 600, the driving wheel 520 can abut against the core shaft in the first V-shaped groove 411 to drive the core shaft to rotate.

[0039] In the embodiment of the present invention, when in use, the two ends of the mandrel to be tested are first placed in the first V-groove 411 and the second V-groove 411 respectively, and the driving wheel 520 is adjusted by the lifting adjustment mechanism 600 to press down on the mandrel in the first V-groove 411. The driving motor 510 is started, and the driving wheel 520 rotates under the action of the driving motor 510. The rotation of the driving wheel 520 drives the mandrel to rotate by virtue of the friction between the driving wheel 520 and the mandrel, and the circular runout of the motor mandrel is detected in conjunction with the micrometer 300 set on the lifting bracket 200. Compared with the circular runout detection by manually rotating the mandrel, the detection result is more accurate and the workload of the detection personnel is also reduced.

[0040] Furthermore, in order to increase the friction between the driving wheel 520 and the core shaft, the driving wheel 520 is a rubber wheel.

[0041] In one embodiment, if Figure 2 As shown, the lifting and lowering adjustment mechanism 600 includes a stud 610, a mounting seat 620, a spring 630 and an adjusting nut 640. The stud 610 is vertically fixed to the top of the first support block 410, the drive motor 510 is fixed on the mounting seat 620, the drive wheel 520 is fixed on the output shaft of the drive motor 510, and the mounting seat 620 is provided with an avoidance hole for the stud 610 to pass through. The spring 630 is sleeved on the stud 610 between the mounting seat 620 and the first support block 410, and the upper and lower ends of the spring 630 elastically press against the lower surface of the mounting seat 620 and the top of the first support block 410 respectively. The adjusting nut 640 is screwed onto the stud 610 above the mounting seat 620.

[0042] It can be understood that when the adjusting nut 640 is rotated clockwise, the adjusting nut 640 pushes the mounting seat 620 downward, causing the mounting seat 620 to move downward, overcoming the elastic force of the spring 630, and then resting on the core shaft in the first V-groove 411; conversely, when the adjusting nut 640 is rotated counterclockwise, the adjusting nut 640 moves upward on the stud 610, and the mounting seat 620 moves upward under the elastic force of the spring 630, and then moves away from the core shaft in the first V-groove 411.

[0043] In a specific embodiment, Figure 2 As shown, the lifting adjustment mechanism 600 further includes a guide post 650, which is vertically fixed to the top of the first support block 410. The mounting base 620 is provided with a through hole that is slidably connected to the guide post 650. The provision of the guide post 650, in conjunction with the through hole in the mounting base 620, improves the stability of the mounting base 620 in its up and down movement relative to the first support block 410.

[0044] In a specific embodiment, Figure 1-Figure 2 As shown, freely rolling balls are evenly embedded on the groove walls of the first V-shaped groove 411 and the second V-shaped groove 421, and the balls are used to roll and support the core shaft. The use of the balls to roll and support the core shaft makes the core shaft more flexible and smooth during rotation.

[0045] In one embodiment, if Figure 1 As shown, the lifting bracket 200 includes a column 210, a sleeve 220, a connecting rod 230 and a locking screw 240. The column 210 is vertically fixed on the base plate 100, and the sleeve 220 is slidably mounted on the column 210. One end of the connecting rod 230 is fixedly connected to the outer wall of the sleeve 220, and the other end of the connecting rod 230 is connected to the micrometer 300. A threaded through hole is provided on the side wall of the sleeve 220, and the locking screw 240 is installed in the threaded through hole. The locking screw 240 is used to lock the sleeve 220 to the column 210.

[0046] Specifically, when it is necessary to adjust the height of the micrometer 300 so that its probe contacts the core shaft to be tested, first loosen the locking screw 240 on the side wall of the sleeve 220 so that the end of the locking screw 240 extending into the threaded through hole is disengaged from the abutment against the column 210. Then, the sleeve 220 can be slid up and down to adjust the height of the micrometer 300. After adjusting to the appropriate height, tighten the locking screw 240 so that the end of the locking screw 240 extending into the threaded through hole is just abutting against the column 210.

[0047] In one embodiment, if Figure 1As shown, the motor core shaft circular runout detection device also includes a movable plate 700, which is slidably arranged on the base plate 100 along a straight line, the first support block 410 is fixed on the movable plate 700, and the second support block 420 is slidably arranged on the movable plate 700, and the movement direction of the second support block 420 relative to the movable plate 700 is parallel to the movement direction of the movable plate 700 relative to the base plate 100.

[0048] According to the above arrangement, when it is necessary to detect the circular runout at different positions on the core shaft, the movable plate 700 can be pushed and pulled by hand to make the movable plate 700 drive the core shaft thereon to move relative to the base plate 100. The operation is simple and convenient.

[0049] In a specific embodiment, Figure 1 As shown, the upper surface of the movable plate 700 is provided with a guide rail 800, and the bottom of the second support block 420 is provided with a slide groove that slidably adapts to the guide rail 800. The slide groove is embedded with a magnetic member 900, which can be magnetically attracted to the guide rail 800. This design allows the second support block 420 to be simply and reliably fixed to the guide rail 800 no matter where it moves on the guide rail 800 through the magnetic attraction between the magnetic member 900 and the guide rail 800.

[0050] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that variations and improvements are possible without departing from the spirit of the present invention, and these variations and improvements are within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A motor shaft circular runout detection device, characterized in that: include: base plate; A lifting bracket is provided on the bottom plate; a dial indicator, mounted on the lifting bracket; A first support block is provided on the bottom plate, wherein a top of the first support block is provided with a first V-shaped groove for supporting the core shaft; a second support block, disposed on the bottom plate and spaced apart from the first support block, wherein the top of the second support block is provided with a second V-shaped groove for supporting the core shaft; as well as A rotary drive assembly is arranged on the top of the first support block through a lifting and adjusting mechanism. The rotary drive assembly has a driving motor and a driving wheel connected to the output shaft of the driving motor. The driving wheel is located above the first V-shaped groove. The rotating shaft of the driving wheel is parallel to the length direction of the first V-shaped groove. The driving wheel can abut against the core shaft in the first V-shaped groove under the action of the lifting and adjusting mechanism to drive the core shaft to rotate.

2. The motor shaft circular runout detection device according to claim 1, characterized in that: The lifting and lowering adjustment mechanism includes a stud, a mounting seat, a spring and an adjusting nut. The stud is vertically fixed to the top of the first support block, the driving motor is fixed on the mounting seat, and the driving wheel is fixed on the output shaft of the driving motor. The mounting seat is provided with an avoidance hole for the stud to pass through. The spring is sleeved on the stud between the mounting seat and the first support block, and the upper and lower ends of the spring elastically press against the lower surface of the mounting seat and the top of the first support block respectively. The adjusting nut is screwed onto the stud above the mounting seat.

3. The motor shaft circular runout detection device according to claim 2, characterized in that: The lifting and adjusting mechanism further includes a guide column, which is vertically fixed to the top of the first supporting block, and the mounting seat is provided with a through hole which is slidably connected to the guide column.

4. The motor shaft circular runout detection device according to claim 1, characterized in that: Freely rolling balls are evenly embedded on the groove walls of the first V-shaped groove and the second V-shaped groove, and the balls are used for rolling and supporting the core shaft.

5. The motor shaft circular runout detection device according to claim 1, characterized in that: The driving wheel comprises a rubber wheel.

6. The motor shaft circular runout detection device according to claim 1, characterized in that: The lifting bracket includes a column, a sliding sleeve, a connecting rod and a locking screw. The column is vertically fixed on the base plate, and the sliding sleeve is slidably mounted on the column. One end of the connecting rod is fixedly connected to the outer wall of the sliding sleeve, and the other end of the connecting rod is connected to the dial indicator. A threaded through hole is provided on the side wall of the sliding sleeve, and the locking screw is installed in the threaded through hole. The locking screw is used to lock the sliding sleeve to the column.

7. The motor shaft circular runout detection device according to any one of claims 1 to 6, characterized in that: The motor core shaft circular runout detection device also includes a movable plate, which is linearly slidably arranged on the base plate, the first support block is fixed on the movable plate, the second support block is slidably arranged on the movable plate, and the movement direction of the second support block relative to the movable plate is parallel to the movement direction of the movable plate relative to the base plate.

8. The motor shaft circular runout detection device according to claim 7, characterized in that: A guide rail is provided on the upper surface of the movable plate, and a slide groove adapted to slide with the guide rail is provided at the bottom of the second support block. A magnetic component is embedded in the slide groove, and the magnetic component can be magnetically adsorbed to the guide rail.

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