A high-precision part run-out detection device and method

Abstract

The application relates to a high-precision part run-out detection device and method, in particular to the technical field of high-precision product measurement, which comprises a gas bearing turntable, one side of the gas bearing turntable is provided with a stand column, a detector is detachably connected to the stand column, a workbench is coaxially arranged on the gas bearing turntable, and the workbench comprises a reference base plate, an inclination angle adjusting assembly, a workpiece detection table and a centering assembly. The inclination angle adjusting assembly comprises an inclined plate which is rotationally arranged on the reference base plate in a direction. The workpiece detection table comprises a workpiece placing plate and a rotating sleeve which is arranged at the lower end of the workpiece placing plate. The centering assembly comprises a centering rod group which is arranged on the rotating sleeve, the centering rod group is provided with two groups of mutually perpendicular centering rods, and the centering rod group comprises a forward centering rod and a reverse centering rod which are oppositely arranged. The application has the effect of improving the detection efficiency of rotary body parts.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-precision product measurement, and in particular to a high-precision part run-out detection device. BACKGROUND

[0002] The electric spindle belongs to a disc cover type rotary body part, is various in type and small in size, and needs to be detected for coaxiality, roundness and other geometric tolerance in a product assembly process. The geometric tolerance size of the electric spindle will directly affect the final use precision and effect of the product, and the electric spindle has a high requirement for geometric tolerance. Most of the geometric tolerance of the rotary body part is detected by using a three-coordinate detector or a roundness detector. When the part is measured, the center of the part is first aligned to make the rotary center of the part coaxial with the rotary center of the workpiece, so as to improve the detection precision.

[0003] In the related art, a centering and leveling precision rotary table disclosed in CN110500984B is provided with a centering module, the centering module includes four centering screws which are uniformly distributed in the circumferential direction on the upper part of the holder. Two-point centering method is adopted. The two-point centering method is adopted. The four centering screws are adjusted respectively. The two screws which are opposite to each other are adjusted and locked to push the centering disc to move in one direction. The centering function of the rotary table is realized through the micro-adjustment in two orthogonal directions. The centering operation is relatively complicated, and the detection efficiency needs to be improved. SUMMARY

[0004] In order to improve the detection efficiency of the rotary body part, the application provides a high-precision part run-out detection device and method.

[0005] In one aspect, the high-precision part run-out detection device provided by the application adopts the following technical scheme: a high-precision part run-out detection device, comprising a gas bearing rotary table, a stand column is arranged on one side of the gas bearing rotary table, a detector is detachably connected to the stand column, a workbench is coaxially arranged on the gas bearing rotary table, and the workbench comprises,

[0006] a reference base plate, the reference base plate is fixed to the gas bearing rotary table;

[0007] an inclination angle adjusting assembly, the inclination angle adjusting assembly comprises an inclined plate which is rotationally arranged on the reference base plate in a direction, and the inclined plate can be locked after being rotated;

[0008] a workpiece detection table, the workpiece detection table comprises a workpiece placement plate and a rotating sleeve which is arranged at the lower end of the workpiece placement plate, a reference shaft table which is coaxially arranged with the gas bearing rotary table is fixed above the inclined plate, and the workpiece detection table abuts against the top of the reference shaft table and can slide on the reference shaft table;

[0009] The aligning assembly comprises an aligning rod group arranged on the rotating sleeve, the rotating sleeve is sleeved on the reference shaft base, the aligning rod group is arranged with two groups perpendicular to each other, the aligning rod group comprises a positive aligning rod and a reverse aligning rod arranged oppositely on two sides of the reference shaft base, the positive aligning rod and the reverse aligning rod can move towards the reference shaft base or away from the reference shaft base, and push the reference shaft base to make the workpiece detection table move relative to the reference shaft base; and when the positive aligning rod moves, the reverse aligning rod can move in the same direction as the positive aligning rod.

[0010] By adopting the above technical scheme, the detector is detachably connected to the column, and the shape and position tolerance of the workpiece placed on the workpiece detection table is detected; the workpiece detection table is slidably arranged on the inclined plate of the inclination adjusting assembly through the reference shaft base; after the plane reference of the inclined plate is adjusted to be parallel to the plane reference of the air floating turntable, the inclined plate is locked, so that the plane reference of the workpiece detection table is parallel to the plane reference of the air floating turntable, thereby improving the detection accuracy.

[0011] The aligning rod group is arranged with two groups perpendicular to each other, so as to adjust the horizontal position of the workpiece detection table; when the positive aligning rod moves to abut against the reference shaft base, the reverse aligning rod moves along the moving direction of the positive aligning rod, so that the workpiece detection table moves horizontally; only two positive aligning rods need to be moved, so that the workpiece detection table is moved to be coaxial with the reference shaft base, that is, coaxial with the rotation axis of the air floating turntable.

[0012] Optionally, a threaded sleeve is fixed on the rotating sleeve, the positive aligning rod is threadedly connected in the threaded sleeve; a guide shaft sleeve is fixed on the rotating sleeve, the reverse aligning rod is slidably arranged in the guide shaft sleeve; and an elastic member is arranged in the guide shaft sleeve and used for applying a force to the reverse aligning rod towards the reference shaft base.

[0013] By adopting the above technical scheme, when the positive aligning rod is rotated and moves towards the reference shaft base, the reverse aligning rod is pressed to move away from the reference shaft base, and the axis of the workpiece detection table is offset to the side where the positive aligning rod is located, so as to be close to the rotation axis of the air floating turntable.

[0014] When the positive aligning rod is rotated and moves away from the reference shaft base, the reverse aligning rod moves towards the reference shaft base under the action of the elastic member, and the axis of the workpiece detection table is offset to the side where the reverse aligning rod is located, so as to be close to the rotation axis of the air floating turntable.

[0015] Optionally, the inclination adjusting assembly further comprises an inclination adjusting rod arranged on the inclined plate, the inclination adjusting rod penetrates through the inclined plate and is threadedly connected in the reference base, and the inclination adjusting rod is rotated to drive the inclined plate to incline.

[0016] By adopting the technical scheme, the inclination adjusting rod is rotated, one end of the inclination adjusting rod is threadedly connected with the reference base plate, the inclination adjusting rod is moved towards or away from the air floating table, thereby driving the inclined plate to be inclined, and the plane reference of the workpiece detection table is adjusted to be parallel to the plane reference of the air floating table.

[0017] Optionally, the inclination adjusting rod comprises an adjusting rod segment and an operating rod segment, the adjusting rod segment is threadedly connected in the reference base plate, and the operating rod segment is penetratingly and rotatably connected in the inclined plate.

[0018] The inclined plate is provided with an abutting piece, the inclined plate is provided with a mounting groove for accommodating the abutting piece, one end of the abutting piece is abutted with the top of the adjusting rod segment, the other end is abutted with the inner wall of the mounting groove, and the operating rod segment is connected with the adjusting rod segment through the abutting piece.

[0019] By adopting the technical scheme, the operating rod is rotated to rotate the adjusting rod, the adjusting rod is moved towards or away from the reference base plate, the abutting piece is moved towards or away from the air floating table, the inclined plate is inclined, the workpiece detection table above the inclined plate is inclined together with the inclined plate, and the plane reference of the workpiece detection table is adjusted to be parallel to the plane reference of the air floating table.

[0020] Optionally, the abutting piece is a differential amplifier, the differential amplifier comprises a universal bearing sleeved on the operating rod segment and an elastic ring arranged above the universal bearing.

[0021] By adopting the technical scheme, when the inclination of the inclined plate is adjusted, the workpiece is fixed on the workpiece detection table, and the end surface of the workpiece in contact with the workpiece detection table is uneven, the workpiece detection table is inclined, the elastic ring is deformed after the workpiece detection table is inclined, and the inclination of the workpiece detection table is amplified at the end of the workpiece detection table. It is convenient for the operator to observe and also convenient for the operator to use the detector to detect the parallelism of the workpiece.

[0022] Optionally, the inclined plate is provided with an inclination fastener, the inclination fastener comprises a positioning pin and a locking piece for locking the positioning pin, and the positioning pin vertically slides on the inclined plate and is abutted with the reference base plate.

[0023] By adopting the technical scheme, when the inclination of the inclined plate is adjusted, the positioning pin is abutted with the reference base plate by sliding the positioning pin, and the position of the positioning pin is locked by using the locking piece, so that the inclined plate is further locked.

[0024] Optionally, the air floating turntable comprises a mounting base and an air floating platform rotatably arranged on the mounting base, an air outlet ring for driving the air floating platform to float is arranged in the mounting base, a plurality of air guide long holes communicating with each other are formed in the outer wall of the air outlet ring, and an air inlet pipeline is in communication with the air guide long holes and connected with the outside.

[0025] By using the above technical scheme, the air inlet pipeline is in communication with the outside, and after the gas from the outside is input into the air inlet pipeline, the air inlet pipeline transports the gas into the air outlet ring, and the gas is sprayed out from the air guide long holes on the air outlet ring, so that the air floating platform floats.

[0026] Optionally, a bearing seat is arranged in the mounting base, the air outlet ring is sleeved on the bearing seat, a vertical slide channel is formed in the bearing seat and coaxially arranged with the bearing seat, a plug is arranged on the side of the air floating platform close to the slide channel, an inspection air channel is formed in the inner wall of the slide channel and in communication with the slide channel, an inspection air pipeline is in communication with the inspection air channel, one end of the inspection air pipeline away from the inspection air channel penetrates out of the mounting base and is in communication with the outside, and the plug is used to cut off the communication between the slide channel and the inspection air channel.

[0027] By using the above technical scheme, when the rotation axis of the air floating platform is not coaxial with the axis of the bearing seat during the floating process of the air floating platform, a gap exists between the plug and the slide channel, so that the gas below the air floating turntable enters the inspection air channel, the gas in the inspection air channel is discharged out of the mounting base along the inspection air pipeline, and the operator can judge whether the rotation axis of the air floating platform is coaxial with the axis of the bearing seat according to the gas flow condition in the inspection air pipeline, thereby reducing the detection error caused by the fact that the rotation axis of the air floating platform is not coaxial with the axis of the bearing seat.

[0028] Optionally, one end of the inspection air pipeline away from the mounting base is connected with a viewing tube, the viewing tube is vertically arranged, a viewing piece is rotatably arranged on the inner wall of the end of the viewing tube away from the inspection air pipeline, and the side of the viewing piece away from the rotation end abuts against the inner wall of the inspection air pipeline.

[0029] By using the above technical scheme, when the gas in the inspection air pipeline is discharged, the viewing piece is driven to rotate, and the operator can judge whether the gas flows in the inspection air pipeline according to the position change of the viewing piece.

[0030] On the other hand, the application provides a high-precision part runout detection method using the high-precision part runout detection device, and the method comprises the following steps:

[0031] S1: start the air floating turntable, input clean compressed air into the air outlet ring in the air floating turntable, and drive the air floating platform to float under the action of the air flow, and at this time, the air floating platform can be rotated;

[0032] S2: placing the workpiece to be tested, placing the workpiece to be tested at the center position of the workpiece detection table, making the axis of the workpiece to be tested coaxial with the rotation axis of the workbench, and locking the workpiece to be tested on the workpiece detection table using the clamp;

[0033] S3: adjusting the plane reference, adjusting the inclination adjusting mechanism, rotating the inclined plate, and locking the inclined plate after the plane reference of the inclined plate is parallel to the plane reference of the air floating table;

[0034] S4: adjusting the coaxiality, adjusting the centering assembly, changing the horizontal position of the workpiece detection table, and making the axis of the workpiece detection table coaxial with the rotation axis of the air floating table;

[0035] S5: detecting the workpiece, installing the detector on the column using the magnetic table base, moving the detector to the appropriate position of the column, and detecting the geometric tolerance of the part to be tested using the detector.

[0036] By adopting the above technical scheme, various specifications and models of small rotary body parts can be quickly detected, and the operation is simple; the air floating turntable is used, the rotation precision is high, and the machining precision of the parts can be met; the horizontal direction and the inclination direction are adjusted before detection, which can effectively improve the detection precision.

[0037] In summary, the present application has at least one of the following beneficial technical effects:

[0038] 1. The threaded sleeve is fixed on the rotating sleeve, and the forward centering rod is threadedly connected in the threaded sleeve; the guide shaft sleeve is fixed on the rotating sleeve, and the reverse centering rod is slidingly arranged in the guide shaft sleeve; the elastic member for driving the reverse centering rod to move is arranged in the guide shaft sleeve; when the operator adjusts the centering, only two forward centering rods need to be adjusted to move the workpiece detection table to be coaxial with the reference shaft table, which is simple and saves the centering time;

[0039] 2. The inclination adjusting assembly is arranged, the plane reference of the inclined plate is adjusted to be parallel to the plane reference of the air floating turntable by the inclination adjusting assembly, and then the inclined plate is locked, so that the plane reference of the workpiece detection table is parallel to the plane reference of the air floating turntable to improve the detection precision;

[0040] 3. The differential amplifier is arranged on the inclination adjusting rod, the workpiece is placed on the workpiece detection table to make the workpiece detection table inclined, the differential amplifier amplifies the inclination of the workpiece detection table at the side end of the workpiece detection table, which is convenient for the operator to observe and also convenient for the operator to use the detector to detect the parallelism of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a schematic view of the overall structure of the high-precision part runout detection device of the embodiment of the present application;

[0042] Figure 2 is a local cross-sectional structure schematic diagram of the high-precision part run-out detection device of the embodiment of the present application;

[0043] Figure 3 is a local cross-sectional structure schematic diagram of the internal structure of the workpiece detection table of the display centering assembly of the embodiment of the present application;

[0044] Figure 4 is a cross-sectional structure schematic diagram of the tilt plate of the tilt angle adjusting rod of the embodiment of the present application;

[0045] Figure 5 is Figure 2 is an enlarged structure schematic diagram of A in FIG. 8.

[0046] Reference signs: 1, air floating turntable; 11, mounting seat; 111, air inlet; 12, bearing seat; 121, slide; 122, inspection air duct; 13, air floating table; 131, plug; 14, air outlet ring; 141, air guide long hole; 2, stand column; 3, tilt angle adjusting assembly; 31, reference base plate; 32, tilt plate; 321, mounting groove; 33, reference shaft table; 34, limit ring; 35, tilt angle adjusting rod; 351, adjusting rod section; 352, operating rod section; 36, cross shaft; 37, hand-held cylinder; 4, workpiece detection table; 41, workpiece placement plate; 411, clamp slide groove; 42, rotating sleeve; 5, centering assembly; 51, forward centering rod; 52, reverse centering rod; 53, threaded sleeve; 54, guide shaft sleeve; 55, spring; 6, differential amplifier; 61, universal bearing; 62, elastic ring; 7, tilt angle fixer; 71, positioning pin; 72, fixing screw; 8, inspection air pipe; 81, inspection pipe; 82, inspection sheet; 9, magnetic table seat; 10, detector. DETAILED DESCRIPTION

[0047] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The present application is further described in detail.

[0048] The embodiment of the present application discloses a high-precision part run-out detection device. Referring to Figure 1 , the high-precision part run-out detection device comprises an air floating turntable 1 and a workbench arranged on the air floating turntable 1, and the air floating turntable 1 is fixedly provided with a stand column 2 on one side, and a detector 10 is detachably connected to the stand column 2. The detector 10 is specifically provided as a micrometer. In the embodiment, the stand column 2 is detachably provided with a magnetic table seat 9 which can be adsorbed on the stand column 2, and the detector 10 is arranged on the magnetic table seat 9 to realize the detachable connection between the detector 10 and the stand column 2. The operator can install the magnetic table seat 9 at a suitable position of the stand column 2 according to the need, so that the detector 10 is located at a suitable position on the stand column 2, and the detector 10 is convenient for detecting the workpiece.

[0049] Referring to Figure 1 andFigure 2 The workbench comprises a workpiece detection table 4 and an inclination adjusting assembly 3, the inclination adjusting assembly 3 comprises a reference base plate 31 arranged on the air floating turntable 1 and an inclined plate 32 rotationally connected above the reference base plate 31, the reference base plate 31 is coaxially fixed on the air floating turntable 1, the reference base plate 31 comprises a base plate groove with an opening facing upward, a cross shaft 36 is arranged in the base plate groove, and the inclined plate 32 is coaxially rotationally connected to the top of the cross shaft 36 to realize relative rotation with the reference base plate 31. In this embodiment, the inclined plate 32 is arranged as a circular plate coaxial with the reference base plate 31.

[0050] With reference to Figure 2 and Figure 3 The workpiece detection table 4 comprises an integrally formed workpiece placement plate 41 and a rotating sleeve 42, the rotating sleeve 42 is rotationally arranged on the inclined plate 32; a limiting ring 34 is arranged at the end of the inclined plate 32 away from the reference base plate 31, the limiting ring 34 is coaxially arranged around the rotating sleeve 42, and is used to abut against the rotating sleeve 42 to limit the workpiece detection table 4. The coaxially fixed reference shaft table 33 is arranged on the inclined plate 32, the reference shaft table 33 is located in the limiting ring 34, and the end of the reference shaft table 33 away from the inclined plate 32 abuts against the workpiece placement plate 41.

[0051] With reference to Figure 1 The workpiece placement plate 41 is specifically arranged as a circular plate, and a plurality of clamp sliding grooves 411 are arranged around the axis of the workpiece placement plate 41, and the clamp sliding grooves 411 extend from the side end of the workpiece placement plate 41 towards the direction close to the center of the workpiece placement plate 41. In this embodiment, the clamp sliding grooves 411 are arranged as T-shaped grooves, and there are specifically six clamp sliding grooves 411, and the adjacent clamp sliding grooves 411 are arranged at an interval of 60 degrees around the axis of the workpiece placement plate 41. The operator can arrange a clamp in the clamp sliding groove 411 to clamp the workpiece to be detected. For example, a bolt is arranged in each clamp sliding groove 411, the bolt is inverted in the clamp sliding groove 411, the bolt is slid to abut against the workpiece to be detected, and a nut is used to lock the position of the bolt in the clamp sliding groove 411 to achieve the purpose of clamping the workpiece to be detected by the bolt.

[0052] With reference to Figure 1 and Figure 3 The workpiece detection table 4 is provided with a centering assembly 5, the centering assembly 5 comprises a centering rod group arranged on the rotating sleeve 42, the centering rod group comprises a forward centering rod 51 and a reverse centering rod 52 arranged oppositely, and the line connecting the axes of the forward centering rod 51 and the reverse centering rod 52 intersects with the axis of the workpiece placement plate 41. The centering rod group is provided with two groups, and the two groups of centering rod groups are arranged perpendicularly to each other to realize the position adjustment of the workpiece detection table 4 on the horizontal plane.

[0053] With reference to Figure 2 and Figure 3The rotating sleeve 42 is provided with a threaded sleeve 53 and a guide sleeve 54, and the limiting ring 34 is provided with a clearance slot for the threaded sleeve 53 and the guide sleeve 54. The threaded sleeve 53 is welded to the rotating sleeve 42, the positive centering rod 51 passes through the threaded sleeve and is screwed with the threaded sleeve 53; the guide sleeve 54 is screwed to the rotating sleeve 42, and the reverse centering rod 52 is slidingly arranged in the guide sleeve 54. The guide sleeve 54 is provided with an elastic member, which is specifically a spring 55; the reverse centering rod 52 includes a connecting rod segment and a guide rod segment, the spring 55 is sleeved on the guide rod segment, and the spring 55 is abutted between the inner wall of the guide sleeve 54 and the connecting rod segment.

[0054] With reference to Figure 1 and Figure 3 , the guide sleeve 54 is rotated to make the spring 55 in a compressed state, and the positive centering rod 51 is rotated to make the positive centering rod 51 abut against the sidewall of the reference shaft table 33; when the positive centering rod 51 moves towards the reference shaft table 33, the reverse centering rod 52 slides away from the reference shaft table 33, so that the workpiece detection table 4 moves to the side where the positive centering rod 51 is located. Conversely, the workpiece detection table 4 moves to the direction of the reverse centering rod 52, thereby realizing the centering function of the workpiece detection table 4, so that the axis of the workpiece detection table 4 is coaxial with the rotation axis of the air floating turntable 1.

[0055] With reference to Figure 1 and Figure 4 , the inclination adjusting assembly 3 further includes an inclination adjusting rod 35 which is sequentially arranged in the inclination plate 32 and the reference base plate 31, and the inclination adjusting rod 35 includes an integrated adjusting rod segment 351 and an operating rod segment 352. The adjusting rod segment 351 is screwed in the reference base plate 31, and the operating rod segment 352 is rotationally connected with the inclination plate 32; a hand-held cylinder 37 is fixedly sleeved on the end of the operating rod segment 352 away from the adjusting rod segment 351, so as to facilitate the operator to rotate the inclination adjusting rod 35. In the embodiment, the inclination adjusting rod 35 is arranged close to the edge of the inclination plate 32, and two inclination adjusting rods 35 are arranged at intervals.

[0056] With reference to Figure 1 and Figure 2 , the inclination plate 32 is provided with a mounting groove 321 at one end close to the reference base plate 31, and the mounting groove 321 is provided with an abutting member. The diameter of the operating rod segment 352 is smaller than that of the adjusting rod segment 351, one end of the abutting member is fixedly connected with the inside of the mounting groove 321, and the other end abuts against the top of the adjusting rod segment 351. The abutting member is specifically a differential amplifier 6, which includes a universal bearing 61 sleeved on the operating rod segment 352 and an elastic ring 62 arranged above the universal bearing 61. In the embodiment, the universal bearing 61 is specifically a self-aligning roller bearing, and the elastic ring 62 is made of rubber.

[0057] The hand-held cylinder 37 is rotated to move the adjusting rod segment 351 towards or away from the air floating turntable 1, so that the tilting plate 32 is tilted. The workpiece detection table 4 located on the tilting plate 32 is tilted together with the tilting plate 32, so that the plane reference of the workpiece detection table 4 is parallel to the plane reference of the air floating turntable 1, thereby improving the detection accuracy.

[0058] Referring to Figure 2 and Figure 4 When the inclination angle of the tilting plate 32 is adjusted, the workpiece to be detected can be placed on the workpiece detection table 4 for detection. When the end of the workpiece to be detected in contact with the workpiece detection table 4 is uneven, the tilting plate 32 will be tilted due to uneven pressure, and the elastic pad will be deformed. The side end of the tilting plate 32 will amplify the tilting condition of the tilting plate 32. This facilitates the operator to observe and use the detector 10 to detect the parallelism of the workpiece to be detected.

[0059] Referring to Figure 4 After the plane reference of the tilting plate 32 is adjusted, in order to further fix the position of the tilting plate 32, an inclination fixing device 7 is arranged on the tilting plate 32. The inclination fixing device 7 includes a positioning pin 71 and a locking member for locking the position of the positioning pin 71. The positioning pin 71 passes through the tilting plate 32 and is slidingly arranged in the tilting plate 32. The locking member is a tightening screw 72 which is threadedly connected to the side wall of the tilting plate 32 and is used to abut against the positioning pin 71.

[0060] When the inclination angle of the tilting plate 32 is adjusted, the sliding positioning pin 71 is abutted against the reference base plate 31, and the lowering bolt is rotated to abut the tightening screw 72 against the positioning pin 71, thereby further fixing the tilting plate 32. In this embodiment, two inclination fixing devices 7 are arranged at intervals.

[0061] Referring to Figure 2 The air floating turntable 1 includes a mounting seat 11 and an air floating table 13 rotatably arranged on the mounting seat 11, and the air floating table 13 can vertically move on the mounting seat 11. A bearing seat 12 coaxially arranged with the air floating turntable 1 is arranged in the mounting seat 11, and an air outlet ring 14 is arranged on the bearing seat 12. A plurality of air guide long holes 141 in communication with each other are arranged in the air outlet ring 14, and one air guide long hole 141 is communicated with an air inlet pipeline. An air inlet 111 is arranged on the mounting seat 11, and one end of the air inlet pipeline away from the air outlet ring 14 is communicated with the air inlet 111.

[0062] The operator can introduce clean compressed gas into the air inlet pipeline through the air inlet 111, and the gas is discharged from the air guide long holes 141 to lift the air floating table 13. At this time, the air floating table 13 can be rotated by hand, and the worktable located on the air floating table 13 is rotated.

[0063] With reference to Figure 2 The bearing seat 12 is provided with a vertical sliding channel 121 coaxially arranged in the bearing seat 12. The air floating table 13 is fixed with a plug 131 at one end close to the bearing seat 12, and the plug 131 is slidingly arranged in the sliding channel 121. The sliding channel 121 is provided with an inspection air channel 122 on the inner side wall, and the inspection air channel 122 is communicated with the sliding channel 121. The plug 131 can block the communication between the inspection air channel 122 and the sliding channel 121. When the air floating table 13 is floated, if the rotation axis of the air floating table 13 is not coaxial with the axis of the bearing seat 12, a gap is formed between the plug 131 and the sliding channel 121. The gas flowing out of the gas guide long hole 141 will flow into the inspection air channel 122 through the gap between the plug 131 and the sliding channel 121.

[0064] With reference to Figure 2 and Figure 5 The inspection air channel 122 is communicated with an inspection air pipe 8 at the side away from the sliding channel 121, and the inspection air pipe 8 penetrates out of the mounting seat 11 and is communicated with a visual pipe 81. The visual pipe 81 is vertically arranged, and a visual sheet 82 is hinged on the pipe wall at the end of the visual pipe away from the inspection air pipe 8. The side wall of the visual sheet 82 away from the rotation end is abutted with the pipe wall of the visual pipe 81. When the air flows through the visual pipe 81, the visual sheet 82 will rotate. The operator can judge whether the rotation axis of the air floating table 13 is coaxial with the axis of the bearing seat 12 according to the state of the visual sheet 82 before and after the air floating table 13 is floated. If the rotation axis of the air floating table 13 is not coaxial with the axis of the bearing seat 12, the air floating table 13 can be adjusted, so as to reduce the detection error of the high-precision part runout detection device.

[0065] The implementation principle of the embodiment of the present application is that the inclined compressed air is introduced into the air outlet ring 14 from the air inlet 111, so that the air floating table 13 is floated. The workpiece to be detected is placed at the center position of the workpiece detection table 4, the magnetic table seat 9 is moved to a position, so that the detector 10 is at a suitable position; the two positive adjustment rods are rotated respectively, the workpiece detection table 4 is centered, so that the axis of the workpiece detection table 4 is coaxial with the rotation axis of the air floating table 13. The fine adjustment hand-held cylinder 37 is adjusted, the inclined plate 32 is inclined, so that the plane reference of the inclined plate 32 is parallel to the plane reference of the air floating table 13; then the positioning pin 71 is slid to abut against the reference base plate 31, and the clamping screw 72 is rotated to abut against the positioning pin 71. Then the workpiece is placed on the workpiece detection table 4, so that the axis of the workpiece is coaxial with the rotation axis of the workbench, and the workpiece to be detected is fixed on the workpiece detection table 4 by the clamp. Finally, one end of the detector 10 is placed at the detection position of the workpiece to be detected, and the geometric tolerance of the workpiece is detected.

[0066] The high-precision part runout detection method disclosed by the embodiment of the present application uses the high-precision part runout detection device described above, and includes the following steps:

[0067] S1: start the air floating turntable 1, and pass clean compressed air into the air outlet ring 14 in the air floating turntable 1 from the air inlet 111 of the air floating turntable 1 by the air pump, the air floating platform 13 is floated under the action of the air flow, at this time, the air floating platform 13 can be rotated;

[0068] S2: place the workpiece to be measured, place the workpiece to be measured at the center position of the workpiece detection table 4, make the axis of the workpiece to be measured coaxial with the rotation axis of the workbench, and lock the workpiece to be measured on the workpiece detection table 4 using the clamp;

[0069] When clamping the workpiece to be measured, the bolt is placed upside down in the clamp sliding groove 411, the bolt is slid to abut against the workpiece to be measured, and then the nut is screwed on the threaded rod section of the bolt to fix the position of the bolt.

[0070] S3: adjust the plane reference, adjust the inclination adjusting mechanism, rotate the inclination adjusting rod 35 to make the inclined plate 32 inclined, and after the inclined plate 32 is rotated to make the plane reference of the inclined plate 32 parallel to the parallel reference of the air floating platform 13, lock the inclined plate 32 using the inclination fastener 7;

[0071] When using the inclination fastener 7, first loosen the fastening screw 72, slide the positioning pin 71 to make the positioning pin 71 abut against the reference base 31, and then tighten the fastening screw 72 to make the fastening screw 72 abut against the positioning pin 71 to fix the positioning pin 71.

[0072] S4: adjust the coaxiality, adjust the centering assembly 5, change the horizontal position of the workpiece detection table 4, and make the axis of the workpiece detection table 4 coaxial with the rotation axis of the air floating platform 13;

[0073] In step S4, the specific operation of adjusting the centering assembly 5 is to finely adjust the two forward centering rods 51 respectively to realize the horizontal movement of the workpiece detection table 4.

[0074] S5: detect the workpiece, install the detector 10 on the column 2 using the magnetic table base 9, move the detector 10 to a suitable position of the column 2, and use the detector 10 to detect the shape and position tolerance of the part to be measured.

[0075] In other embodiments of the present embodiment, step S2 can also be performed after step S4 is completed.

[0076] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: 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 high precision part run-out detection device, characterized by: Including air float turntable (1), one side of air float turntable (1) is provided with stand (2), detection instrument (10) is detachably connected on stand (2), air float turntable (1) is provided with workbench coaxially, workbench includes, Reference base (31) is fixed on air float turntable (1); Inclination angle adjusting assembly (3) includes oblique plate (32) rotationally arranged on the direction of reference base (31), and oblique plate (32) can be locked after rotation; Workpiece detection table (4) includes workpiece setting plate (41) and rotation sleeve (42) provided at lower end of workpiece setting plate (41), reference shaft table (33) coaxially arranged with air float turntable (1) is fixed above oblique plate (32), workpiece detection table (4) abuts top of reference shaft table (33) and can slide on reference shaft table (33); Aligning assembly (5) includes aligning rod group provided on rotation sleeve (42), rotation sleeve (42) is sleeved outside reference shaft table (33), aligning rod group is provided with two groups perpendicular to each other, aligning rod group includes forward aligning rod (51) and reverse aligning rod (52) oppositely arranged on both sides of reference shaft table (33), forward aligning rod (51) and reverse aligning rod (52) can move towards reference shaft table (33) or away from reference shaft table (33) and push reference shaft table to make workpiece detection table (4) move relative to reference shaft table (33);And when forward aligning rod (51) moves, reverse aligning rod (52) can move in the same direction with forward aligning rod (51); Inclination angle adjusting assembly (3) further includes inclination angle adjusting rod (35) provided on oblique plate (32), inclination angle adjusting rod (35) passes through oblique plate (32) and is threadedly connected in reference base (31), oblique plate (32) can be tilted when inclination angle adjusting rod (35) rotates; Inclination angle adjusting rod (35) includes adjusting rod section (351) and operating rod section (352), adjusting rod section (351) is threadedly connected in reference base (31), operating rod section (352) is connected in rotation in oblique plate (32); Oblique plate (32) is provided with abutting piece, installation groove (321) for accommodating abutting piece is formed in oblique plate (32);One end of abutting piece abuts with top of adjusting rod section (351), and the other end abuts with inner wall of installation groove (321);Operating rod section (352) passes through abutting piece and is connected with adjusting rod section (351).

2. The high-precision part run-out detection device according to claim 1, characterized in that: The rotating sleeve (42) is fixed with a threaded sleeve (53), and the positive alignment rod (51) is threadedly connected in the threaded sleeve (53); the rotating sleeve (42) is fixed with a guide sleeve (54), and the reverse alignment rod (52) is slidingly arranged in the guide sleeve (54); the guide sleeve (54) is provided with an elastic member for applying a force to the reverse alignment rod (52) towards the reference shaft table (33).

3. The high-precision part run-out detection device according to claim 1, characterized in that: The abutting piece is a differential amplifier (6), which comprises a universal bearing (61) sleeved on the operating rod segment (352) and an elastic ring (62) arranged above the universal bearing (61).

4. The high-precision part run-out detection device of claim 1, wherein: The tilt plate (32) is provided with a tilt angle fixer (7), which comprises a positioning pin (71) and a locking member for locking the positioning pin (71); the positioning pin (71) vertically slides on the tilt plate (32) and is abutted against the reference base plate (31).

5. The high-precision part run-out detection device according to claim 1, characterized in that: The air floating turntable (1) comprises a mounting seat (11) and an air floating table (13) rotatably arranged on the mounting seat (11), the mounting seat (11) is provided with an air outlet ring (14) for driving the air floating table (13) to float, a plurality of air guide long holes (141) are arranged on the outer side wall of the air outlet ring (14) and are communicated with each other, the air guide long holes (141) are communicated with an air inlet pipeline, and one end of the air inlet pipeline away from the air outlet ring (14) is communicated with the outside.

6. The high-precision part run-out detection device according to claim 5, characterized in that: The mounting seat (11) is provided with a bearing seat (12), and the air outlet ring (14) is sleeved on the bearing seat (12); the bearing seat (12) is provided with a vertical sliding channel (121), and the sliding channel (121) is coaxially arranged on the bearing seat (12); the air floating table (13) is provided with a plug (131) on the side close to the sliding channel (121); the inner side wall of the sliding channel (121) is provided with an inspection air channel (122) communicated with the sliding channel (121), the inspection air channel (122) is communicated with an inspection air pipe (8), one end of the inspection air pipe (8) away from the inspection air channel (122) penetrates out of the mounting seat (11) and is communicated with the outside, and the plug (131) is used to cut off the communication between the sliding channel (121) and the inspection air channel (122).

7. The high-precision part run-out detection device according to claim 6, characterized in that: One end of the inspection air pipe (8) outside the mounting seat (11) is communicated with a viewing pipe (81), the viewing pipe (81) is vertically arranged, a viewing sheet (82) is rotatably arranged on the inner side wall of one end of the viewing pipe (81) away from the inspection air pipe (8), and one side of the viewing sheet (82) away from the rotating end is abutted against the inner side wall of the inspection air pipe (8).

8. A high-precision part run-out detection method using the high-precision part run-out detection device according to any one of claims 1-7, comprising the following steps: S1: start the air float turntable (1), and clean compressed air is introduced into the air outlet ring (14) in the air float turntable (1), the air float table (13) is floated under the action of the airflow, at this time, the air float table (13) can be rotated; S2: place the workpiece to be tested, place the workpiece to be tested at the center position of the workpiece detection table (4), make the axis of the workpiece to be tested coaxial with the rotation axis of the workbench, and lock the workpiece to be tested on the workpiece detection table (4) using the clamp; S3: adjust the plane reference, adjust the inclination adjusting mechanism, rotate the inclined plate (32), and lock the inclined plate (32) using the inclination fastener (7) after the inclined plate (32) is rotated to the plane reference of the inclined plate (32) parallel to the plane reference of the air float table (13); S4: adjust the coaxiality, adjust the centering assembly (5), change the horizontal position of the workpiece detection table (4), and make the axis of the workpiece detection table (4) coaxial with the rotation axis of the air float table (13); S5: detect the workpiece, install the detector (10) on the column (2) using the magnetic table base (9), move the detector (10) to the appropriate position of the column (2), and detect the shape and position tolerance of the detected part of the workpiece to be tested using the detector (10).

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