A device for detecting the roughness of the inner surface of a rotor hole of an electric machine

Abstract

The application discloses a kind of motor rotor hole inner surface roughness detection device, it is related to roughness detection technical field;The present application includes light shield shell, adjusting electric cylinder, leveling plate, support roller and detection shell, laser light path system and contact detection probe are arranged in detection shell;After shaping by concave lens and convex lens using laser generator, light is divided into calibration light path and detection light path by beam splitter, one way is irradiated rotor inner hole surface by reflector and is received by detection light sensor, another way irradiates calibration material and is detected by calibration light sensor, realizes real-time calibration and roughness determination;Blue sapphire ball head probe is simultaneously arranged, for contact type auxiliary detection, ensure that complex surface can still be accurately measured.It has automatic leveling, double-mode detection and accurate calibration function, can efficiently, reliably complete motor rotor hole inner surface roughness detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roughness detection, in particular to a motor rotor hole inner surface roughness detection device. BACKGROUND

[0002] The existing motor rotor hole inner surface roughness detection mostly relies on contact measurement, that is, a hard stylus or ball head probe is slid on the rotor hole surface to measure the micro displacement and then calculate the roughness. This kind of method has the problems of low measurement efficiency, fast probe wear, potential damage to the hole wall, and poor adaptability to complex geometric surfaces. Especially in the detection process of the motor rotor; although laser measuring instruments are used for surface roughness detection, most of them are single-beam direct irradiation, and the measurement results have limitations, no calibration reference, resulting in optical measurement results under different devices or environments being incomparable; lack of multi-modal detection means, resulting in single detection means. SUMMARY

[0003] In order to overcome the defects of the prior art, the present application provides the following technical scheme: a motor rotor hole inner surface roughness detection device, comprising a light shielding shell, a light shielding cover plate movably mounted on the light shielding shell, four adjusting cylinders fixedly installed on the bottom surface of the inner wall of the light shielding shell, a leveling plate movably connected to the end of the telescopic rod of the four adjusting cylinders, and two symmetrical and parallel support rollers rotatably installed on the leveling plate; a control cylinder is fixedly installed on the light shielding shell, and the telescopic rod end of the control cylinder extends into the interior of the light shielding shell; and a detection shell is fixedly installed at the end of the telescopic rod of the control cylinder, and a light medium hole and a detection probe hole are formed in the detection shell, wherein the light medium hole and the detection probe hole are used to accommodate a detection medium for detecting the roughness of the inner surface of the motor rotor hole; the detection medium comprises a light source emitted by a laser generator and a detection probe capable of contacting the inner surface of the motor rotor hole, and the end of the detection probe contacting the inner surface of the motor rotor hole is a sapphire ball head.

[0004] Preferably, the end of each adjusting cylinder telescopic rod is connected with the lower surface of the leveling plate by a spherical pair, the adjusting cylinder telescopic cylinder is fixedly matched with the light shielding shell; and the four adjusting cylinders are distributed in the four corner positions of the leveling plate in a rectangular array; two support drive motors for driving the two support rollers to rotate are also fixedly installed on the leveling plate.

[0005] Preferably, the inner wall of the detection shell is fixedly installed with a whole light plate and an axial beam, wherein the whole light plate and the axial beam are perpendicular to each other, the axial beam is arranged along the axial direction of the detection shell, the whole light plate is fixedly installed with a light source shell, the laser generator is fixedly installed in the light source shell, the inner wall of the light source shell is further fixedly installed with a concave lens support, the concave lens support is fixedly installed with a concave lens, three lens guide sliding rods are fixedly installed between the concave lens support and the opposite surface of the whole light plate, and a convex lens adjusting lead screw is rotatably installed between the concave lens support and the opposite surface of the whole light plate, wherein the convex lens adjusting lead screw is fixedly installed on the output shaft of a convex lens adjusting motor, and the convex lens adjusting motor is fixedly installed on the whole light plate.

[0006] Preferably, the convex lens support is slidably installed on the three lens guide sliding rods, the convex lens support is threadedly driven with the convex lens adjusting lead screw, and the axial directions of the three lens guide sliding rods and the convex lens adjusting lead screw are parallel to each other, wherein the convex lens support is fixedly installed with a convex lens; the concave lens is arranged between the laser generator and the convex lens; and the whole light plate is provided with a rectangular light transmission hole for shaping the light emitted from the convex lens.

[0007] Preferably, the axial beam is fixedly installed with a mirror group support, a positioning sliding rod is fixedly installed between the mirror group support and the whole light plate, a positioning lead screw is rotatably installed between the mirror group support and the whole light plate and arranged in parallel with the positioning sliding rod in the axial direction, the positioning lead screw is fixedly installed on the output shaft of a positioning motor, and the positioning motor is fixedly installed on the whole light plate; wherein a detection light sensor positioning table is slidably sleeved on the positioning sliding rod, the detection light sensor positioning table is threadedly driven with the positioning lead screw, and the detection light sensor positioning table is fixedly installed with a detection light sensor.

[0008] Preferably, the inner side of the mirror group support is fixedly installed with a light splitting lens and a light reflecting lens, wherein the light splitting lens is used to split the light passing through the rectangular light transmission hole into two beams of light perpendicular to each other, one of which is perpendicularly irradiated onto the light reflecting lens, and the other of which is irradiated onto the calibration material through the light splitting lens.

[0009] Preferably, the mirror group support is further fixedly installed with a calibration light shield, the calibration light shield is fixedly installed with a calibration light sensor inside, the calibration light shield is provided with a rectangular light transmission hole of the same shape and size as the rectangular light transmission hole on the whole light plate, for allowing the light to pass through the calibration light shield and irradiate onto the calibration light sensor. The light passing through the light splitting lens is irradiated onto the inner surface of the hole of the motor rotor at an angle of forty-five degrees, and the light reflected by the light reflecting lens is irradiated onto the inner surface of the hole of the motor rotor at an angle of forty-five degrees.

[0010] Preferably, the calibration material is fixedly installed on the calibration material fixing plate, the calibration material fixing plate is fixedly installed on the magnetic calibration plate mounting frame by magnetic attraction, the light shielding shell is fixedly installed with the buckle cover in a detachable manner, the calibration material fixing plate and the calibration material on the buckle cover are replaced after the buckle cover is opened, the calibration material and the calibration material fixing plate are integrally arranged, the magnetic calibration plate mounting frame is slidingly installed on the four parallel guide sliding rods, the four guide sliding rods are fixedly installed between the calibration light shielding cover and the axial cross beam, and the axes of the four guide sliding rods are perpendicular to the lower surface of the calibration light shielding cover and the upper surface of the axial cross beam.

[0011] Preferably, the at least one guide sliding rod is sleeved with a tension spring, the two ends of the tension spring are fixedly connected with the magnetic calibration plate mounting frame and the axial cross beam, two symmetrical electromagnets are fixedly installed on the four guide sliding rods, and the electromagnets are magnetically attracted to the magnetic calibration plate mounting frame.

[0012] Preferably, the detection probe is fixedly installed on the detection probe support in a detachable manner, two parallel probe support movement guide rods are fixedly installed on the detection probe support, the two probe support movement guide rods are axially parallel to the guide sliding rods, the two probe support movement guide rods are slidingly installed on the axial cross beam, and the two probe support movement guide rods are fixedly connected with the magnetic calibration plate mounting frame.

[0013] Compared with the prior art, the motor rotor hole inner surface roughness detection device has the following beneficial effects: (1) the motor rotor hole inner surface roughness detection device adopts the combination of a laser generator, a concave-convex lens group and a beam splitting reflection system, so that non-contact detection of the motor rotor hole inner surface can be realized. Through the corresponding relationship between the reflected light intensity of the laser measuring instrument and the surface roughness, the surface state can be quickly judged, the damage or additional wear caused by the traditional contact method to the hole wall is effectively avoided, and the reliability of the detection and the integrity of the measured part are improved; (2) through the synergistic effect of the electric cylinder, the leveling plate and the supporting roller, the motor rotor can be quickly leveled at different diameters and different installation positions. Compared with the traditional manual calibration method, the present application can accurately adjust the consistency of the rotor axis and the detection optical axis under automatic conditions, greatly improves the detection efficiency, reduces the labor intensity of the operator, and ensures the repeatability and comparability of the detection results; (3) the calibration material and the calibration light path are introduced into the detection system, and the light intensity benchmark comparison can be carried out through the calibration block with the same material and design roughness as the motor rotor before detection. This design not only eliminates the interference caused by environmental factors and light source fluctuations, but also makes the data obtained by the detection light sensor more objective and reliable. With the help of the calibration mechanism, the actual roughness difference of the rotor hole can be accurately reflected, and the problem of insufficient calibration in the traditional single sensor detection method is avoided; (4) the present application simultaneously integrates contact detection probe and non-contact laser detection two modes, the detection probe adopts sapphire ball head with high hardness and wear resistance, which can be used instead in special working conditions or optical detection conditions, realizing supplementary measurement. This dual-mode design enables the equipment to maintain the continuity and comprehensiveness of detection when facing complex hole wall surfaces, solving the problem of strong limitation of single detection mode; (5) the present application uses the combination of electromagnet and tension spring to realize the linkage movement of the calibration plate and the probe support. When the probe moves with the roughness of the hole wall, the calibration material moves synchronously, and the optical system can obtain amplitude and frequency data through light intensity changes. This method greatly improves the richness of detection information, not only can measure the average roughness, but also can obtain the hole wall cylindricity deviation and axial floating characteristics. Compared with the traditional method of obtaining only single-point value, the present application can realize multi-dimensional parameter acquisition, providing more scientific data support for subsequent process correction and quality control. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the light shielding shell structure of the present application;

[0015] Figure 2 It is a schematic diagram of the internal structure of the light shielding shell of the present application;

[0016] Figure 3 It is a working position diagram of the detection shell of the present application;

[0017] Figure 4The schematic diagram of the internal structure of the detection housing of the present application;

[0018] Figure 5 The schematic diagram of the structure at A in the present application Figure 4

[0019] Figure 6 The schematic diagram of the structure of the lens group support of the present application;

[0020] Figure 7 The schematic diagram of the structure at B in the present application Figure 6

[0021] Figure 8 The schematic diagram of the structure at C in the present application Figure 6

[0022] Figure 9 The schematic diagram of the structure of the calibration material fixing plate of the present application;

[0023] Figure 10 The schematic diagram of the structure of the calibration light shield of the present application.

[0024] In the figure: 101 - light shielding shell; 102 - light shielding cover plate; 103 - control cylinder; 104 - adjusting cylinder; 105 - leveling plate; 106 - supporting roller; 107 - supporting drive motor; 108 - detection housing; 109 - light medium perforation; 110 - axial cross beam; 111 - detection probe perforation; 112 - detection probe; 113 - detection probe support; 114 - probe support movement guide rod; 115 - magnetic attraction calibration plate mounting frame; 116 - tension spring; 117 - lens group support; 118 - calibration light shield; 119 - buckle cover; 120 - guide slide rod; 121 - electromagnet; 122 - calibration light sensor; 123 - shaped light plate; 124 - light source shell; 125 - position adjusting lead screw; 126 - position adjusting slide rod; 127 - position adjusting motor; 128 - detection light sensor position adjusting table; 129 - detection light sensor; 130 - laser generator; 131 - concave lens support; 132 - concave lens; 133 - convex lens support; 134 - lens guide slide rod; 135 - convex lens adjusting motor; 136 - convex lens adjusting lead screw; 137 - convex lens; 138 - calibration material; 139 - calibration material fixing plate; 140 - light reflecting lens; 141 - light splitting lens. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be further described below in combination with the accompanying drawings. Figures 1-10

[0026] ​​​​The motor rotor hole inner surface roughness detection device provided by the application comprises a light shielding shell 101, a light shielding cover plate 102 is movably installed on the light shielding shell 101, four adjusting electric cylinders 104 are fixedly installed on the bottom surface of the inner wall of the light shielding shell 101, a leveling plate 105 is movably connected to the end of the telescopic rod of each adjusting electric cylinder 104, and two symmetrical and parallel support rollers 106 are rotatably installed on the leveling plate 105; a control electric cylinder 103 is fixedly installed on the light shielding shell 101, the telescopic rod of the control electric cylinder 103 extends to the inside of the light shielding shell 101, and a detection shell 108 is fixedly installed at the end of the telescopic rod of the control electric cylinder 103; a light medium through hole 109 and a detection probe through hole 111 are formed in the detection shell 108, and the light medium through hole 109 and the detection probe through hole 111 are used for accommodating a detection medium for detecting the roughness of the inner surface of the motor rotor hole; the detection medium comprises a light source emitted by a laser generator 130 and a detection probe 112 capable of contacting the inner surface of the motor rotor hole, and the end of the detection probe 112 contacting the inner surface of the motor rotor hole is a sapphire ball head.

[0027] The axial cross beam 110 is fixedly installed with a lens group support 117, a position adjusting slide rod 126 is fixedly installed between the lens group support 117 and a whole type light plate 123, a position adjusting screw rod 125 which is axially parallel to the position adjusting slide rod 126 is also rotatably installed between the lens group support 117 and the whole type light plate 123, the position adjusting screw rod 125 is fixedly installed on the output shaft of a position adjusting motor 127, and the position adjusting motor 127 is fixedly installed on the whole type light plate 123; a detection light sensor position adjusting table 128 is slidably sleeved on the position adjusting slide rod 126, the detection light sensor position adjusting table 128 is threadedly driven with the position adjusting screw rod 125, and a detection light sensor 129 is fixedly installed on the detection light sensor position adjusting table 128. The inner side of the lens group support 117 is fixedly installed with a light beam splitting lens 141 and a light beam reflecting lens 140, the light beam splitting lens 141 is used for splitting the light beam which passes through the rectangular light transmission hole into two mutually perpendicular light beams, one of which is perpendicularly irradiated onto the light beam reflecting lens 140, and the other of which passes through the light beam splitting lens 141 and is irradiated onto a calibration material 138. The lens group support 117 is also fixedly installed with a calibration light shield 118, the calibration light shield 118 is internally fixedly installed with a calibration light sensor 122, and a rectangular light transmission hole which is the same in shape and size as the one on the whole type light plate 123 is formed in the calibration light shield 118, so as to make the light beam pass through the calibration light shield 118 and irradiate onto the calibration light sensor 122. The light beam which passes through the light beam splitting lens 141 is irradiated onto the inner surface of the hole of the motor rotor at an angle of 45 degrees, and the light beam which is reflected by the light beam reflecting lens 140 is irradiated onto the inner surface of the hole of the motor rotor at an angle of 45 degrees. The calibration material 138 is fixedly installed on a calibration material fixing plate 139, the calibration material fixing plate 139 is fixedly installed on a magnetic calibration plate mounting frame 115 in a magnetic manner, and a buckle cover 119 is fixedly installed on the light shielding shell 101 in a detachable manner, so as to facilitate the replacement of the calibration material fixing plate 139 and the calibration material 138 on the buckle cover 119, wherein the calibration material 138 and the calibration material fixing plate 139 are integrally arranged, the magnetic calibration plate mounting frame 115 is slidably installed on four parallel guide slide rods 120, the four guide slide rods 120 are fixedly installed between the calibration light shield 118 and the axial cross beam 110, and the axes of the four guide slide rods 120 are perpendicularly arranged with respect to the lower surface of the calibration light shield 118 and the upper surface of the axial cross beam 110. At least one of the guide slide rods 120 is sleeved with a tension spring 116, the two ends of the tension spring 116 are fixedly connected with the magnetic calibration plate mounting frame 115 and the axial cross beam 110, two symmetrically arranged electromagnets 121 are fixedly installed on the four guide slide rods 120, and the electromagnets 121 are magnetically connected with the magnetic calibration plate mounting frame 115.The detection probe 112 is fixedly installed on the detection probe support 113 in a detachable manner, two parallel probe support movement guide rods 114 are fixedly installed on the detection probe support 113, the two probe support movement guide rods 114 are axially parallel to the guide slide rod 120, and the two probe support movement guide rods 114 are slidingly installed on the axial cross beam 110, and the two probe support movement guide rods 114 are fixedly matched with the magnetic attraction calibration plate installation frame 115.

[0028] The working principle of the motor rotor hole inner surface roughness detection device disclosed by the application is as follows: the motor rotor is placed on the two support rollers 106, then the extension rods of the four adjusting electric cylinders 104 are controlled to make the axis of the motor rotor overlap the axis of the extension rod of the control electric cylinder 103 as much as possible, two support drive motors 107 are controlled, the support drive motors 107 drive the support rollers 106 to rotate, the support rollers 106 drive the motor rotor to rotate, the control electric cylinder 103 drives the detection shell 108 to move along the axial direction of the motor rotor, and at the same time, the detection medium is also driven to move, so as to detect the surface roughness of different positions of the inner hole of the motor rotor. Finally, the light shielding cover plate 102 needs to be closed on the light shielding shell 101, so that the inside of the light shielding shell 101 is in a light-proof state.

[0029] The laser generator 130 is started, and the laser light emitted by the laser generator 130 first passes through the concave lens 132 and then passes through the convex lens 137. The angle of the laser light passing through the convex lens 137 (the irradiation range) can be controlled by controlling the distance between the concave lens 132 and the convex lens 137, and thus the intensity of the laser light within the same angle (the smaller the range, the greater the intensity) is changed. Then, the laser light passes through the rectangular light-transmitting hole on the shaping light plate 123, irradiates the light beam splitting lens 141, and is split into two beams by the light beam splitting lens 141. One of the two beams is reflected by the light reflecting lens 140 at an angle of 45 degrees to the inner hole surface of the motor rotor, and then reflected by the inner hole surface of the motor rotor to the detection light sensor 129. It should be noted that when the diameter of the motor rotor changes, not only the extension rods of the four adjusting cylinders 104 need to be adjusted, but also the position of the detection light sensor 129 on the positioning slide rod 126 needs to be adjusted (because the projection position of the light reflected by the light reflecting lens 140 to the inner hole surface of the motor rotor changes, the reflection position also changes). Specifically, the positioning motor 127 is controlled, the output shaft of the positioning motor 127 drives the positioning screw 125 to rotate, and the positioning screw 125 drives the detection light sensor 129 on the detection light sensor positioning table 128 to slide axially along the positioning slide rod 126 to receive the light reflected from the inner hole surface of the motor rotor. The rougher the inner hole surface of the motor rotor, the lower the intensity of the reflected light, and the smoother the inner hole surface of the motor rotor, the higher the intensity of the reflected light. Therefore, the intensity of the light received by the detection light sensor 129 is different for different roughness. At the same time, before detection, a calibration material 138 of the same material as the motor rotor needs to be selected for calibration (the surface of the calibration material 138 has the same curvature and designed surface roughness as the inner hole of the motor rotor); the light passing through the light beam splitting lens 141 will irradiate the calibration material 138 at the same angle as the inner hole surface of the motor rotor, and then be reflected by the calibration material 138 to the calibration light sensor 122 (passing through the rectangular light-transmitting hole of the calibration light shield 118). The intensity of the light detected by the calibration light sensor 122 is used as a reference, and the data detected by the calibration light sensor 122 and the data obtained by the detection light sensor 129 are compared to determine the roughness difference of the inner hole surface of the motor rotor (if the difference is too large, it is not qualified).

[0030] In addition, the electromagnet 121 can be powered off (the former requires that the two electromagnets 121 are always powered on, that is, the magnetic calibration plate mounting frame 115 cannot move on the guide slide rod 120), at this time the calibration material 138 and the calibration material fixing plate 139 on the magnetic calibration plate mounting frame 115 will slide on the guide slide rod 120, install the detection probe 112 on the detection probe support 113 (not installed before, if not used, do not install), so that the sapphire ball head of the detection probe 112 is in contact with the inner hole surface of the motor rotor, control the extension and retraction of the extension rod of the control cylinder 103, that is, drive the detection probe 112 to slide along the axial direction of the inner hole of the motor rotor, to measure the surface roughness of the same axial straight line of the inner hole of the motor rotor, that is, to measure whether the inner hole of the motor rotor in the axial direction is an ideal cylindrical shape or other required shape. Specifically, when the inner hole of the motor rotor changes, the detection probe 112 is always in contact with the inner hole of the motor rotor under the action of the tension spring 116, so the movement of the detection probe 112 will directly drive the calibration material 138 and the calibration material fixing plate 139 on the magnetic calibration plate mounting frame 115 to move (the calibration material 138, the calibration material fixing plate 139, the magnetic calibration plate mounting frame 115, the probe support movement guide rod 114, the detection probe support 113, and the detection probe 112 are in synchronous motion), due to the movement of the calibration material 138, the light reflected by the calibration material 138 will change, at this time the frequency of the light change is detected by the calibration light sensor 122 to measure the frequency of the surface floating of the inner hole of the motor rotor. The amount of light change measured by the calibration light sensor 122 can measure the amplitude of the surface floating of the inner hole of the motor rotor. The greater the movement of the detection probe 112, the greater the movement of the calibration material 138, and finally the greater the offset of the light reflected by the calibration material 138 from the rectangular light transmission hole on the calibration light shield 118, the smaller the light intensity received by the calibration light sensor 122.

Claims

1. A device for detecting the roughness of the inner surface of a bore of an electric machine rotor, characterized in that: The utility model provides a kind of motor rotor hole inner surface roughness detection device, including light shielding shell (101), light shielding shell (101) is movably installed with light shielding cover plate (102), four adjusting cylinders (104) are fixedly installed on the bottom surface of the inner wall of light shielding shell (101), the telescopic rod end of four adjusting cylinders (104) is movably connected with leveling plate (105), two symmetrical and parallel arranged support rollers (106) are rotatably installed on leveling plate (105); Light shielding shell (101) is fixedly installed with control cylinder (103), the telescopic rod end of control cylinder (103) extends to the inside of light shielding shell (101);And the end of the telescopic rod of control cylinder (103) is fixedly installed with detection shell (108), detection shell (108) is provided with light medium perforation (109) and detection probe perforation (111), wherein light medium perforation (109) and detection probe perforation (111) are used to accommodate detection motor rotor hole inner surface roughness detection medium; Detection medium includes light source emitted by laser generator (130) and detection probe (112) capable of contacting with motor rotor hole inner surface, the end of detection probe (112) contacting with motor rotor hole inner surface is sapphire ball head; The inner wall of detection shell (108) is fixedly installed with whole light plate (123) and axial crossbeam (110), wherein whole light plate (123) and axial crossbeam (110) are perpendicular to each other, axial crossbeam (110) is arranged along the axial direction of detection shell (108), light source shell (124) is fixedly installed on whole light plate (123), wherein laser generator (130) is fixedly installed in light source shell (124), concave lens support (131) is also fixedly installed on the inner wall of light source shell (124), concave lens support (131) is fixedly installed with concave lens (132), three lens guide sliding rods (134) are fixedly installed between the opposite surfaces of concave lens support (131) and whole light plate (123), one convex lens adjusting screw (136) is also rotatably installed between the opposite surfaces of concave lens support (131) and whole light plate (123), wherein convex lens adjusting screw (136) is fixedly installed on the output shaft of convex lens adjusting motor (135), and convex lens adjusting motor (135) is fixedly installed on whole light plate (123);Convex lens support (133) is slidably installed on three lens guide sliding rods (134), convex lens support (133) is threadedly driven with convex lens adjusting screw (136), and the axial directions of three lens guide sliding rods (134) and one convex lens adjusting screw (136) are parallel to each other, wherein convex lens (137) is fixedly installed on convex lens support (133);Concave lens (132) is arranged between laser generator (130) and convex lens (137);Wherein rectangular light transmission hole is formed in whole light plate (123), and rectangular light transmission hole is used for shaping light emitted from convex lens (137); The axial cross beam (110) is fixedly installed with a mirror group support (117), a position adjusting slide rod (126) is fixedly installed between the mirror group support (117) and the integral light plate (123), and a position adjusting screw rod (125) axially parallel to the position adjusting slide rod (126) is also rotatably installed between the mirror group support (117) and the integral light plate (123), the position adjusting screw rod (125) is fixedly installed on the output shaft of a position adjusting motor (127), and the position adjusting motor (127) is fixedly installed on the integral light plate (123); wherein a detection light sensor position adjusting table (128) is slidably sleeved on the position adjusting slide rod (126), the detection light sensor position adjusting table (128) is in threaded transmission cooperation with the position adjusting screw rod (125), and a detection light sensor (129) is fixedly installed on the detection light sensor position adjusting table (128); the inner side of the mirror group support (117) is fixedly installed with a light beam splitting lens (141) and a light beam reflecting lens (140), wherein the light beam splitting lens (141) is used for splitting the light beam passing through the rectangular light transmission hole into two mutually perpendicular light beams, one of which is perpendicular to the original light beam and irradiates onto the light beam reflecting lens (140), and the other passes through the light beam splitting lens (141) and irradiates onto the calibration material (138); The mirror group support (117) is also fixedly installed with a calibration light shield (118), the calibration light shield (118) is fixedly installed with a calibration light sensor (122) inside, and a rectangular light transmission hole with the same shape and size as the integral light plate (123) is formed in the calibration light shield (118), so that the light beam passes through the calibration light shield (118) and irradiates onto the calibration light sensor (122).

2. A device for detecting the roughness of the inner surface of a bore of an electric machine rotor according to claim 1, characterized in that: The end of each adjusting electric cylinder (104) telescopic rod is connected with the lower surface spherical pair of the leveling plate (105), the adjusting electric cylinder (104) telescopic cylinder is fixedly matched with the light shielding shell (101); and the four adjusting electric cylinders (104) are distributed in the four corner positions of the leveling plate (105) in a rectangular array; the leveling plate (105) is also fixedly installed with two support drive motors (107) for driving two support rollers (106) to rotate, respectively.

3. A device for detecting the bore surface roughness of an electrical machine rotor according to claim 2, characterized in that: The calibration material (138) is fixedly installed on a calibration material fixing plate (139), the calibration material fixing plate (139) is fixedly installed on the magnetic calibration plate mounting frame (115) by magnetic attraction, the light shielding shell (101) is fixedly installed with a buckle cover (119) in a detachable manner, the magnetic calibration plate mounting frame (115) is slidably installed on four parallel guide slide rods (120), the four guide slide rods (120) are fixedly installed between the calibration light shield (118) and the axial cross beam (110), and the axes of the four guide slide rods (120) are perpendicular to the lower surface of the calibration light shield (118) and the upper surface of the axial cross beam (110).

4. A device for detecting the roughness of the inner surface of a bore of an electric machine rotor according to claim 3, characterized in that: At least one of the guide slide rods (120) is sleeved with a pull spring (116), two ends of the pull spring (116) are fixedly connected with the magnetic attraction calibration plate mounting frame (115) and the axial cross beam (110), two symmetrical electromagnets (121) are fixedly installed on the four guide slide rods (120), and the electromagnets (121) are magnetically attracted to the magnetic attraction calibration plate mounting frame (115).

5. A device for detecting the bore surface roughness of an electrical machine rotor according to claim 4, characterized in that: The detection probe (112) is fixedly installed on the detection probe support (113) in a detachable manner, two parallel probe support movement guide rods (114) are fixedly installed on the detection probe support (113), the two probe support movement guide rods (114) are axially parallel to the guide slide rods (120), and the two probe support movement guide rods (114) are slidably installed on the axial cross beam (110), and the two probe support movement guide rods (114) are fixedly connected with the magnetic attraction calibration plate mounting frame (115).

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