Rotor inner and outer diameter measuring device

Abstract

The utility model relates to the technical field of detection devices, and particularly discloses a rotor internal and external diameter measuring device, which comprises a base, a support table, an internal diameter measuring column and an external diameter measuring seat, and is characterized in that the support table is vertically and rotatably connected to the base, and the support table is driven by a rotating piece to rotate; the inner diameter measuring column is fixedly arranged on the base, the inner diameter measuring column is arranged on the supporting table in a penetrating mode along the rotating axis of the supporting table, the outer diameter measuring bases are arranged on the portions, on the two sides of the inner diameter measuring column, of the base, air nozzles are arranged on the sides, close to each other, of the inner diameter measuring column and the outer diameter measuring bases, and the air nozzles are used for being connected with an external air pump through air pipes. And a pneumatic gauge is arranged on the air pipe. According to the invention, the problems of low measurement efficiency and high measurement cost during measurement of the inner and outer diameters of the motor rotor are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection devices, in particular to a rotor inner and outer diameter measuring device. BACKGROUND

[0002] A motor is composed of a rotor and a stator, and is used to realize the mutual conversion between electric energy and mechanical energy and between mechanical energy and electric energy. The rotor of the motor needs to be measured for inner and outer diameters multiple times during the processing, and high measurement accuracy, fast measurement speed and good compatibility are required to control the processing quality.

[0003] At present, the commonly used technology for measuring the inner and outer diameters of the rotor of the motor is to measure the inner diameter and the outer diameter by two sets of measuring devices respectively, which is low in measurement efficiency and high in measurement cost. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the problems of low measurement efficiency and high measurement cost in measuring the inner and outer diameters of the rotor of the motor, the present application provides a rotor inner and outer diameter measuring device.

[0005] The rotor inner and outer diameter measuring device provided by the present application adopts the following technical scheme:

[0006] A rotor inner and outer diameter measuring device, comprising a base, a support table, an inner diameter measuring column and an outer diameter measuring seat, the support table is rotatably connected to the base in the vertical direction, and the support table is driven to rotate by a rotating member; the inner diameter measuring column is fixedly arranged on the base, and the inner diameter measuring column is arranged on the support table along the rotation axis of the support table; the outer diameter measuring seat is arranged on the base on both sides of the inner diameter measuring column; a gas nozzle is arranged on one side of the inner diameter measuring column and the outer diameter measuring seat; the gas nozzle is connected to an external air pump through a gas pipe; and a gas dynamic quantity instrument is arranged on the gas pipe.

[0007] By using the above technical scheme, when in use, the rotor is placed on the support table from top to bottom, the inner diameter measuring column is arranged in the inner hole of the rotor, the outer wall of the inner diameter measuring column is in abutment with the inner wall of the rotor, the side of the outer diameter measuring seat close to the inner diameter measuring column is in abutment with the outer peripheral wall of the rotor, then the external air pump is started to spray gas towards the inner and outer peripheral walls of the rotor through the gas nozzle, the gas dynamic quantity instrument on the gas pipe obtains the distance between the gas nozzle and the inner and outer peripheral walls of the rotor by the pressure change of the gas nozzle, then the rotating member drives the support table to rotate to drive the rotor to rotate one round, so that the roundness of the inner and outer diameters of the rotor is measured, and the inner and outer diameter sizes of the rotor are calculated; the inner and outer diameter measurements of the rotor are integrated together, the measurement of the inner diameter and the outer diameter of the rotor can be completed by one measurement action, the detection efficiency is high, and the use is convenient.

[0008] Optionally, the two outer diameter measuring seats are slidably connected to the base along the radial direction of the inner diameter measuring column, the sliding directions of the two outer diameter measuring seats are the same, and an adjusting mechanism for adjusting the positions of the outer diameter measuring seats is arranged on the base.

[0009] By adopting the above technical scheme, the size of the different outer diameter of the rotor can be measured by adjusting the position of the two outer diameter measuring seats through the adjusting mechanism, the measurement of different models of the rotor with different outer diameters is compatible, the outer diameter measuring device does not need to be replaced, and the structure is simple and practical.

[0010] Optionally, the adjusting mechanism comprises a fixed seat and a lead screw, the fixed seat is fixedly arranged on the base, the lead screw is arranged on the fixed seat along the sliding direction of the outer diameter measuring seat, the lead screw is rotatably connected to the fixed seat along the length direction of the lead screw, and the lead screw is arranged on the outer diameter measuring seat and is threadedly connected with the outer diameter measuring seat.

[0011] By adopting the above technical scheme, the outer diameter measuring seat has a tendency to rotate with the lead screw, and the outer diameter measuring seat cannot rotate because it is slidingly connected to the base, so that the lead screw can drive the outer diameter measuring seat to move along the length direction of the lead screw, thereby achieving the functional requirement of the adjusting mechanism for adjusting the position of the outer diameter measuring seat. Moreover, the outer diameter measuring seat is driven to move by the threadedly connected manner of the lead screw and the outer diameter measuring seat, and the self-locking principle of the lead screw transmission is utilized, so that the movement of the outer diameter measuring seat is more stable, reliable and accurate.

[0012] Optionally, a linear slide rail is arranged on the fixed seat along the sliding direction of the outer diameter measuring seat, a clamping through groove matched with the shape of the linear slide rail is arranged on the outer diameter measuring seat, and the linear slide rail is slidingly clamped in the clamping through groove. A locking rod is threadedly connected to the clamping through groove on the outer diameter measuring seat, and one end of the locking rod inserted into the outer diameter measuring seat abuts against the linear slide rail.

[0013] By adopting the above technical scheme, the linear slide rail, the clamping through groove and the locking rod are cooperatively arranged, so that when the position of the outer diameter measuring seat is adjusted in place, the position of the outer diameter measuring seat can be further locked by tightening the locking rod to make one end of the locking rod inserted into the outer diameter measuring seat abut against the linear slide rail, thereby improving the accuracy of the rotor outer diameter measurement.

[0014] Optionally, a micrometer is arranged on the fixed seat, and a detection end of the micrometer abuts against the outer diameter measuring seat.

[0015] By adopting the above technical scheme, the micrometer is arranged, so that the worker can more intuitively observe the accurate displacement size when moving the outer diameter measuring seat, thereby improving the convenience and intuitiveness of the position adjustment of the outer diameter measuring seat, and the use is more convenient.

[0016] Optionally, the adjusting mechanism comprises a first rack, a second rack, a rotating gear and a driving assembly, the first rack is connected with one outer diameter measuring seat, the second rack is connected with another outer diameter measuring seat, the first rack and the second rack extend in parallel with the sliding direction of the outer diameter measuring seats; the rotating gear is rotatably connected to the base, and the driving assembly is arranged on the base to drive the rotating gear to rotate.

[0017] By adopting the above technical scheme, the driving assembly drives the rotating gear to rotate, and drives the first rack and the second rack to move close to or away from each other, so as to synchronously drive the two outer diameter measuring seats to move close to or away from each other, and one action can synchronously drive the movement of the outer diameter measuring seats, so that the adjustment is more convenient and fast.

[0018] Optionally, the driving assembly comprises a worm gear and a worm, the worm gear is coaxially connected with the rotating gear, the worm is rotatably connected to the base, the worm is engaged with the worm gear, and a handle is arranged on the worm.

[0019] By adopting the above technical scheme, the rotating gear is driven to rotate by rotating the worm to drive the rotating gear to rotate, so as to realize the function requirement of the driving assembly for driving the rotating gear to rotate, and the self-locking characteristic of the worm gear and the worm is utilized, when the worm is no longer rotated, the worm gear is locked, so as to limit the movement of the outer diameter measuring seat, and the accuracy of the rotor outer diameter measurement is improved.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. The arrangement of the base support table, the inner diameter measuring column, the outer diameter measuring seat, the rotating member, the jet nozzle, the air pipe and the pneumatic gauge makes the inner and outer diameter measurement process of the rotor highly automated, and the inner and outer diameters of the rotor can be measured by one measurement action, so that the measurement efficiency is high and the measurement cost is low.

[0022] 2. The position of the two outer diameter measuring seats can be adjusted by the adjusting mechanism, the size of the different outer diameters of the rotor can be measured, the measurement of different models of the rotor outer diameter is compatible, and the outer diameter measuring device does not need to be replaced, and the structure is simple and practical.

[0023] 3. The matching arrangement of the first rack, the second rack, the rotating gear and the driving assembly makes the rotating gear driven to rotate by the driving assembly, so as to synchronously drive the first rack and the second rack to move close to or away from each other, and then synchronously drive the two outer diameter measuring seats to move close to or away from each other, so that the adjustment of the outer diameter measuring seat is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0025] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0026] Figure 2 is a schematic diagram of the overall structure of embodiment 2 of the present application.

[0027] Reference signs: 1, base; 2, support table; 3, inner diameter measuring column; 4, outer diameter measuring seat; 41, clamping through groove; 5, rotating part; 6, air jet nozzle; 7, adjusting mechanism; 71, fixed seat; 72, screw rod; 73, linear slide rail; 74, first rack; 75, second rack; 76, rotating gear; 77, worm wheel; 78, worm; 79, handle; 8, locking rod; 9, micrometer. DETAILED DESCRIPTION

[0028] The drawings will be described below in conjunction with the Figures 1-2 The present application will be further described in detail.

[0029] Embodiment 1:

[0030] The embodiments of the present application disclose a rotor inner and outer diameter measuring device. Referring to Figure 1 , the rotor inner and outer diameter measuring device comprises a base 1, a support table 2, an inner diameter measuring column 3, an outer diameter measuring seat 4 and a rotating part 5. The rotating part 5 comprises a servo turntable, the servo turntable is a hollow servo turntable, and the rotating part 5 is fixedly installed on the base 1. The support table 2 is fixedly installed on the rotating table top at the top of the servo turntable, and starting the servo turntable can drive the support table 2 to rotate vertically. The inner diameter measuring column 3 is fixedly installed on the base 1, and the inner diameter measuring column 3 passes through along the axis direction of the hollow servo turntable and the support table 2; the outer diameter measuring seat 4 is arranged on the base 1 on the left and right sides of the inner diameter measuring column 3. The inner diameter measuring column 3 and the outer diameter measuring seat 4 are both provided with air jet nozzles 6 on the side close to each other, the air jet nozzles 6 are arranged in the transverse direction, all the air jet nozzles 6 are in the same plane, the air jet nozzles 6 are connected with an external air pump through air pipes, and each air pipe is connected with a gas dynamic meter, the connection mode of the air pipes, the external air pump and the gas dynamic meter in the figure is a conventional means, and all are not shown.

[0031] In use, the rotor is placed on the support table 2 directly after passing through the inner diameter measuring column 3 from top to bottom, at this time the inner peripheral wall of the rotor is in abutment with the outer peripheral wall of the inner diameter measuring column 3, and the outer peripheral wall of the rotor is in abutment with the side of the outer diameter measuring seat 4 close to the inner diameter measuring column 3. Then the external air pump sprays air towards the inner and outer peripheral walls of the rotor through the air jet nozzle 6, and the sprayed air touches the inner and outer peripheral walls of the rotor. Since the inner and outer peripheral walls of the rotor are different from the position of the air jet nozzle 6, different pressure differences are formed, and the distance from the nozzle to the inner and outer peripheral walls of the rotor is calculated by the detection of the pneumatic gauge. Then the support table 2 is driven to rotate by the rotating part 5 to drive the rotor to rotate for one revolution, so that the roundness of the inner and outer diameters of the rotor is measured, and the inner and outer diameter sizes of the rotor are calculated. The inner and outer diameters of the rotor are measured together, and the measurement of the inner and outer diameters of the rotor can be completed in one measurement action, which is high in detection efficiency and convenient to use.

[0032] Further, the two outer diameter measuring seats 4 are connected to the base 1 in a sliding manner along the radial direction of the inner diameter measuring column 3, and the sliding directions of the two outer diameter measuring seats 4 are the same, and the base 1 is provided with an adjusting mechanism 7 for adjusting the positions of the outer diameter measuring seats 4. The positions of the two outer diameter measuring seats 4 can be adjusted by the adjusting mechanism 7, and the outer diameter of the rotor with different outer diameter sizes can be measured without changing the outer diameter measuring device under the condition that the inner diameter and height of the rotor are unchanged, which is simple in structure and practical.

[0033] Illustratively, the adjusting mechanism 7 includes a fixed seat 71 and a lead screw 72, the fixed seat 71 is fixedly installed on the base 1, a linear slide rail 73 is fixedly arranged on the fixed seat 71 along the sliding direction of the outer diameter measuring seat 4, the outer diameter measuring seat 4 is provided with a clamping groove 41 matched with the shape of the linear slide rail 73, and the outer diameter measuring seat 4 is clamped on the linear slide rail 73 through the clamping groove 41. The lead screw 72 is arranged on the fixed seat 71 along the sliding direction of the outer diameter measuring seat 4, and the lead screw 72 is rotatably connected to the fixed seat 71 along the length direction of the lead screw 72, and the lead screw 72 is arranged on the outer diameter measuring seat 4 and is threadedly connected with the outer diameter measuring seat 4. The outer diameter measuring seat 4 can be driven to slide along the length direction of the linear slide rail 73 by rotating the lead screw 72, so as to adjust the gap between the two outer diameter measuring seats 4 to adapt to the measurement of the different outer diameter sizes of the rotor.

[0034] Further, in order to improve the stability of the measurement, the outer diameter measuring seat 4 is threadedly connected with a locking rod 8 corresponding to the clamping groove 41, and one end of the locking rod 8 is abutted against the linear slide rail 73. After the position of the outer diameter measuring seat 4 is adjusted, the position of the outer diameter measuring seat 4 can be firmly locked by tightening the locking rod 8, which is simple in structure and convenient to use.

[0035] In addition, in order to improve the accuracy of the movement of the outer diameter measuring seat 4 and improve the measurement accuracy, the fixed seat 71 is provided with a micrometer 9, and the detection end of the micrometer 9 abuts against the outer diameter measuring seat 4. The micrometer 9 can make the worker more intuitively observe the accurate displacement size when moving the outer diameter measuring seat 4, improve the intuitiveness and accuracy of the position adjustment of the outer diameter measuring seat 4, and be more convenient to use.

[0036] The implementation principle of the rotor inner and outer diameter measuring device in the embodiment of the application is as follows: in use, the rotor to be measured is placed on the support table 2, the external air pump is started to make the air nozzle 6 spray air towards the inner and outer circumferential walls of the rotor through the air pipe, and then the servo turntable is started to drive the rotor to rotate one revolution, and the inner and outer diameters of the rotor are calculated through the detection of the air gauge. In the case that the inner diameter and the height of the rotor are constant, the distance between the two outer diameter measuring seats 4 is adjusted by the rotating screw 72, so that the measuring requirement of different sizes of the outer diameter of the rotor is met, and the outer diameter measuring device does not need to be replaced, and the structure is simple and practical.

[0037] Embodiment 2

[0038] The embodiment of the application discloses a rotor inner and outer diameter measuring device, and the difference between the embodiment 2 of the application and the embodiment 1 of the application is that Figure 2 The adjusting mechanism 7 comprises a first rack 74, a second rack 75, a rotating gear 76 and a driving assembly. The first rack 74 is connected with one outer diameter measuring seat 4, the second rack 75 is connected with another outer diameter measuring seat 4, the extending directions of the first rack 74 and the second rack 75 are parallel to the sliding direction of the outer diameter measuring seat 4, the rotating gear 76 is vertically rotatably connected to the base 1, the rotating gear 76 is engaged with the first rack 74 and the second rack 75, and the driving assembly is arranged on the base 1 and used for driving the rotating gear 76 to rotate.

[0039] When the gap between the two outer diameter measuring seats 4 is adjusted, the rotating gear 76 is driven to rotate by the driving assembly, and the first rack 74 and the second rack 75 are simultaneously driven to move, that is, one action can synchronously drive the two outer diameter measuring seats 4 to move close to or away from each other, the position adjustment of the two outer diameter measuring seats 4 is more convenient and fast, and the movement of the outer diameter measuring seat 4 is more stable and reliable through the transmission mode of the gear and the rack.

[0040] Exemplarily, the driving assembly comprises a worm wheel 77, a worm 78 and a handle 79, the worm wheel 77 is coaxially connected with the rotating gear 76, the worm 78 is rotationally connected to the base 1, the worm 78 is engaged with the worm wheel 77, and the handle 79 is fixedly connected to the worm 78. The worm wheel 77 is driven to rotate by rotating the handle 79 to drive the worm 78 to rotate, thereby driving the rotating gear 76 to rotate. When the worm 78 is no longer rotated, the worm wheel 77 is locked, and the rotating gear 76 is locked, thereby limiting the movement of the outer diameter measuring seat 4, and further improving the stability and precision of the rotor outer diameter measurement.

[0041] The implementation principle of the rotor inner and outer diameter measuring device is that when the positions of the two outer diameter measuring seats 4 need to be adjusted, the handle 79 is only needed to be rotated to drive the worm 78 to rotate, drive the worm wheel 77 engaged with the worm 78 to rotate, and drive the first rack 74 and the second rack 75 to approach or move away from each other, thereby realizing the position adjustment function of the two outer diameter measuring seats 4 approaching or moving away from each other. Only one action of rotating the handle 79 can realize the adjustment of the positions of the two outer diameter measuring seats 4, which is convenient to adjust. According to the self-locking principle of the worm wheel 77 and the worm 78, when the worm 78 is no longer rotated, the worm wheel 77 is locked, and the rotating gear 76 is locked, thereby limiting the movement of the outer diameter measuring seat 4, and further improving the stability and precision of the rotor outer diameter measurement.

[0042] The above are optional embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rotor inside and outside diameter measuring device characterized by: It includes base (1), support platform (2), inner diameter measuring column (3) and outer diameter measuring seat (4), support platform (2) is connected on base (1) around vertical rotation, support platform (2) is driven to rotate by rotating part (5);The inner diameter measuring column (3) is fixed on the base (1), the inner diameter measuring column (3) is arranged on the support platform (2) along the axis of rotation of the support platform (2), the outer diameter measuring seat (4) is arranged on the base (1) on both sides of the inner diameter measuring column (3), the inner diameter measuring column (3) and the outer diameter measuring seat (4) are provided with air jet nozzle (6) on the side close to each other, the air jet nozzle (6) is used for being connected with external air pump through air pipe, the air pipe is provided with pneumatic flowmeter.

2. A rotor inside and outside diameter measuring device according to claim 1, wherein: Both the outer diameter measuring seat (4) are slidably connected to the base (1) along the radial direction of the inner diameter measuring column (3), the sliding direction of the two outer diameter measuring seats (4) is the same, the base (1) is provided with an adjusting mechanism (7) for adjusting the position of the outer diameter measuring seat (4).

3. A rotor inside and outside diameter measuring device according to claim 2 wherein: The adjusting mechanism (7) includes a fixed seat (71) and a lead screw (72), the fixed seat (71) is fixed on the base (1), the lead screw (72) is arranged on the fixed seat (71) along the sliding direction of the outer diameter measuring seat (4), the lead screw (72) is rotatably connected to the fixed seat (71) along the length direction, and the lead screw (72) is arranged on the outer diameter measuring seat (4) and is threadedly connected with the outer diameter measuring seat (4).

4. A rotor inside and outside diameter measuring device according to claim 3 wherein: The fixed seat (71) is provided with a linear slide rail (73) along the sliding direction of the outer diameter measuring seat (4), the outer diameter measuring seat (4) is provided with a clamping through groove (41) matched with the shape of the linear slide rail (73), and the linear slide rail (73) is clamped in the clamping through groove (41).

5. A rotor inside and outside diameter measuring device according to claim 3 wherein: The fixed seat (71) is provided with a micrometer (9), and the detection end of the micrometer (9) abuts against the outer diameter measuring seat (4).

6. A rotor inside and outside diameter measuring device according to claim 2 wherein: The adjusting mechanism (7) includes a first rack (74), a second rack (75), a rotating gear (76) and a driving assembly, the first rack (74) is connected with one outer diameter measuring seat (4), the second rack (75) is connected with the other outer diameter measuring seat (4), the first rack (74) and the second rack (75) extend in parallel with the sliding direction of the outer diameter measuring seat (4), the rotating gear (76) is rotatably connected to the base (1), and the driving assembly is arranged on the base (1) to drive the rotating gear (76) to rotate.

7. A rotor inside and outside diameter measuring device according to claim 6 wherein: The driving assembly includes a worm wheel (77) and a worm (78), the worm wheel (77) is coaxially connected with the rotating gear (76), the worm (78) is rotatably connected to the base (1), the worm (78) is engaged with the worm wheel (77), and the worm (78) is provided with a handle (79).

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