High dynamic measurement equipment for electric drive shaft

Abstract

The utility model provides high dynamic measuring equipment for an electric drive shaft, which is used for measuring a workpiece and comprises a measuring unit, a lifting unit, a placing table, a base, a small-value standard component and a large-value standard component, and the measuring unit, the lifting unit, the placing table, the small-value standard component and the large-value standard component are all arranged above the base. The measuring unit comprises a clamping assembly, a supporting floating assembly, an input shaft ball bearing outer end face measuring assembly, a middle shaft cone bearing outer end face measuring assembly, an output shaft cone bearing outer end face measuring assembly, a supporting floating fixing assembly and a floating mechanism. The beneficial effects of the utility model are that the measuring probe distribution of the input shaft ball bearing a, the measuring probe distribution of the intermediate shaft ball bearing b and the measuring probe distribution of the output shaft ball bearing c need to be wrapped in the connecting line area of the probe distribution on the housing combination surface, so that the measuring accuracy of equipment can be improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and in particular to a high dynamic measuring device for an electric drive shaft. Background Technology

[0002] Electrical measuring instruments are instruments that compare the measured electrical quantity or parameter with electrical standards or provide accurate ratios. A large number of measuring instruments used in scientific research, measurement transfer, and industrial testing fall under the category of electrical measuring instruments. They have a wide range of applications and hold an important position in the field of automotive engineering.

[0003] Application 1: A method and apparatus for measuring the selection of reducer pads (CN114838691A)

[0004] This invention belongs to the field of new energy vehicle drive motor assembly technology, specifically a method and device for measuring reducer bearing shims. The method includes the following steps: First, three points are taken on each of the mating surfaces of the reducer cover and housing, and the x, y, and z axis coordinates are measured. The surface normal vector and plane equation of the mating surface are obtained through surface equations. Next, three points are taken on each of the bearing surface and bearing housing of the reducer cover and housing, and the x, y, and z axis coordinates are measured. Combined with the normal vector of the corresponding mating surface, the center coordinates of the bearing surface and bearing housing are obtained through circle equations. Then, the distance from the center of the bearing surface and bearing housing to the corresponding mating surface is calculated using the point-to-surface distance formula. Finally, the distance from the center of the bearing housing to the mating surface is subtracted from the distance from the corresponding bearing surface to the mating surface, and the reserved clearance is subtracted to obtain the thickness of the intermediate shaft and differential shims. Based on the above method, the problem of time-consuming and inaccurate operation in selecting reducer bearing shims can be solved.

[0005] Application 2: Device for measuring the distance between the end faces of bearing holes in a transmission housing and its usage method (CN116793289A)

[0006] This invention relates to a device and method for measuring the distance between the bearing bore end face of a transmission housing and its use. The device includes a base on which a support frame is mounted. A lifting plate is installed on the front side of the support frame, and the lifting plate is driven by a lifting mechanism to move up and down relative to the support frame. An L-shaped support seat with a forward-facing arrangement is installed on the front side of the lifting plate, and a measuring mechanism is mounted on the support seat. The lifting mechanism drives the lifting plate, measuring mechanism, and support seat downwards. The bottom end of a pre-positioning pin approaches and inserts into the positioning hole on the top surface of the housing being measured. The locking mechanism unlocks the floating seat, and the pre-positioning pin extends into the positioning hole on the top surface of the housing being measured to complete the pre-positioning. A clamping mechanism hooks and clamps the housing being measured from bottom to top, and simultaneously, the positioning hole of the housing being measured enters the positioning pin of the conformal sleeve. At this time, the measuring head is triggered to measure the end face of the bearing bore to be measured on the housing, completing the automatic and rapid measurement of the distance between the end face of the bearing bore to be measured and the bottom surface of the housing being measured. This measurement is accurate, reliable, and stable, greatly assisting in the selection of bearings.

[0007] Application 3: Gearbox shaft system measurement system and measuring device (CN113295122A)

[0008] This application discloses a gearbox shaft system measurement system and its measuring device. The gearbox shaft system measuring device includes: a worktable movable between a working position and a non-working position; a movable plate movably mounted on the worktable in the horizontal direction; and a measuring component mounted on the movable plate, at least a portion of which is movable in the vertical direction relative to the movable plate. In the working position, at least a portion of the measuring component abuts against the end of the shaft of the gearbox under test for measuring the shaft system parameters of the shaft. According to this application, a highly applicable shaft system measurement solution for automotive gearboxes is provided.

[0009] Application 4: A measuring device for the dynamic height of the top bearing and mating surface of a gearbox differential (CN214250925U)

[0010] This utility model discloses a measuring device for the dynamic height of the top bearing and mating surface of a gearbox differential, comprising: a support module, a drive module, and a counterweight module; the support module includes a flexible drive head, a drive rod, a connecting rod, a top ball, a sliding rod, a conical pressure head, a spherical pressure head, and a support plate, with the flexible drive head disposed at the bottom end of the drive rod; the connecting rod disposed inside the drive rod; the top ball disposed at the bottom end of the connecting rod, and the sliding rod disposed at the top end of the connecting rod; the support plate connected to the top end of the sliding rod; the drive module drives the drive rod to rotate; the counterweight module includes a mounting base, a cylinder, a slider, a support plate, and a counterweight block, with the slider slidably connected to the mounting base; the slider connected to the cylinder; and the support plate connected to the slider, located between the counterweight block and the support plate. Through the above method, this utility model can obtain relatively stable measurement values, improve measurement efficiency and accuracy, and allows for adjustment of the counterweight force according to actual needs via the counterweight module.

[0011] Application 1 mainly describes the principle of measurement and calculation and the composition of the mechanism; Application 2 mainly describes the measurement method of mechanical equipment; Application 3 mainly describes that the X / Y deviation is mainly driven by a servo motor for positioning; Application 4 mainly describes the method of driving and applying force in the measurement. Such equipment has high cost and low accuracy. Utility Model Content

[0012] To overcome the aforementioned problems in the prior art, this utility model provides a high dynamic measurement device for an electric drive shaft.

[0013] This utility model discloses a high dynamic measurement device for an electric drive shaft, used for measuring workpieces. It includes a measurement unit, a lifting unit, a placement platform, a base, a small value standard part, and a large value standard part. The measurement unit, lifting unit, placement platform, small value standard part, and large value standard part are all arranged above the base. The measurement unit includes a clamping assembly, a support floating assembly, an input shaft ball bearing outer end face measurement assembly, an intermediate shaft tapered bearing outer end face measurement assembly, an output shaft tapered bearing outer end face measurement assembly, a support floating fixing assembly, and a floating mechanism.

[0014] Based on this, the supporting floating assembly includes a support block one, a positioning pin sleeve one, a positioning pin sleeve two, a probe one, a measuring fixing plate, a floating plate, an adjusting block one, a pin sleeve one, a pin sleeve two, a support seat one, and a measuring mounting seat. The upper end face of the support block one is in contact with the workpiece, and the lower end face of the support block one is mounted on the upper end face of the floating plate. Positioning pin sleeve one and positioning pin sleeve two are fixed on the support block one by set screws. Probe one is mounted on the support block one. Pin sleeve one and pin sleeve two are mounted on the lower end face of the measuring fixing plate. The floating plate and the measuring fixing plate are connected by a floating mechanism. The lower end face of the support seat one is mounted on the upper end face of the floating plate, and the lower end face of the measuring mounting seat one is mounted on the upper end face of the support seat one.

[0015] Based on this, the clamping assembly includes a multiplier cylinder, a connecting seat 1, a cylinder mounting seat 1, a pressure block, a connecting rod 2, a pull rod, a connecting rod 3, a connecting rod 1, a rotating shaft 2, a rotating shaft 1, and a rotating shaft 3. The lower end face of the connecting seat is mounted on the upper end face of the floating plate, with one on each side. The lower end face of the cylinder mounting seat is mounted on the upper end face of the two connecting seats 1. The upper end face of the multiplier cylinder is mounted on the lower end face of the cylinder mounting seat. The lower end face of the pull rod is mounted on the piston rod end face of the multiplier cylinder. The two connecting rods 2 on the left and right are connected to the left and right ends of the pull rod through the rotating shaft 3. Another rotating shaft 3 connects the pressure block to the connecting rod 2. The two connecting rods 1 on the left and right are connected to the pressure block and the left and right sides of the cylinder mounting seat 1 through the two rotating shafts 2 respectively. The two connecting rods 3 on the left and right are connected to the sides of the two connecting rods 1 respectively through the rotating shaft 1.

[0016] Based on this, the floating mechanism includes a floating fixed plate, a thrust bearing one, a connecting plate one, a connecting plate two, a thrust bearing two, a bushing one, a disc spring, a connecting plate three, a floating shaft, and bolts. The lower end face of the floating fixed plate is placed on the upper end face of the measuring fixed plate. The upper end cover of the thrust bearing one is reversed and placed on the upper end face of the floating fixed plate. The lower end face of the connecting plate is connected to the reversed cover of the thrust bearing one. The upper end face of the connecting plate one is connected to the lower end face of the floating plate. The lower end face of the connecting plate two is placed on the upper end face of the floating plate. The lower end cover of the thrust bearing two is reversed and connected to the upper end face of the connecting plate two. The floating shaft is sequentially inserted into the holes of the thrust bearing two, the connecting plate two, the floating plate, the connecting plate one, the thrust bearing one, and the floating fixed plate. The bushing is inserted into the floating shaft. The disc spring is inserted into the diameter of the floating shaft and contacts the upper end face of the bushing one. The lower end face of the connecting plate three contacts the disc spring. Bolts pass through the inner hole of the floating shaft and are locked to the measuring fixed plate.

[0017] Based on this, the input shaft ball bearing outer end face measuring assembly includes a bearing sleeve, a clamping block one, a connecting block one, a probe two, an L-connecting block, a sleeve one, a counterweight floating shaft one, a counterweight connecting plate one, a counterweight one, a buffer pad one, a fixed shaft one, a floating shaft one, a linear bearing one, a sleeve two, a limiting shaft one, a linear bearing two, a snap ring one, and a fixed shaft two. The clamping block one and the connecting block one are connected by the fixed shaft one. The semicircular boss of the clamping block contacts the semicircular groove of the connecting block. The bearing sleeve and the connecting block one are connected by a set screw. The lower end face of the sleeve is installed on the upper end face of the measuring mounting base. The linear bearing one, the sleeve two, and the linear bearing two are inserted into the hole of the sleeve one. The snap ring is inserted into the sleeve, the buffer pad is installed on the upper end face of the sleeve, the floating shaft is fixed to the connecting block by the fixed shaft, the floating shaft passes through the inner hole of the linear bearing, the bushing, the buffer pad in sequence, the lower end face of the counterweight connecting plate is fixed to the upper end face of the floating shaft, the counterweight floating shaft is connected to the counterweight connecting plate, the counterweight block is loaded onto the upper end face of the counterweight connecting plate, the L connecting blocks are respectively installed on the three mounting surfaces on the side of the sleeve, the probe is fixed to the L connecting block, the probe of the probe is in contact with the clamping block, and the limiting shaft passes through the floating shaft, the bushing, and the sleeve to limit the floating range.

[0018] Based on this, the output shaft tapered bearing outer end face measuring assembly includes a shift fork, quick-change shaft, floating rotary shaft, clamping block two, spring one, adjusting bolt, limit bolt, probe connecting plate, probe three, connecting plate four, counterweight floating shaft two, counterweight linear bearing, buffer pad two, counterweight support shaft, reducer mounting base, reducer, servo motor one, counterweight block, floating connecting sleeve, counterweight connecting sleeve, support shaft, detection ring, linear bearing three, connecting bolt one, clamping block three, floating shaft two, connecting plate five, deep groove ball bearing one, flat key, sleeve two, sleeve three, deep groove ball bearing two, spring two, connecting seat two, connecting seat three, coupling one, bushing one, mounting base, bushing two, sleeve four, counterweight connecting plate two, floating sleeve and connecting bolt two, the shift fork The detection ring is installed on the floating rotating shaft via connecting bolt 1, which is connected to the quick-change shaft and the floating rotating shaft. Bushing 2 is inserted into sleeve 4, which is installed inside sleeve 3. Two flat keys are respectively inserted into the slots on both sides of the floating rotating shaft. Connecting plate 4 is installed on the mounting base for positioning deep groove ball bearing 1. Probe connecting plate is installed on the floating plate, and probe 3 is installed on the probe connecting plate. The counterweight floating shaft 1 passes through linear bearing 3. Bushing 1 is inserted into connecting base 2, which is connected to sleeve 3. Deep groove ball bearing 2 and deep groove ball bearing 1 are respectively installed into the mounting holes on the upper and lower ends of the mounting base. Sleeve 3 is fitted into the inner diameters of deep groove ball bearing 1 and deep groove ball bearing 2. The floating rotating shaft... The two flat keys are inserted into the grooves inside sleeve three. Bushing two is inserted from the lower end of the floating rotating shaft. Sleeve four is fixed to sleeve three. Sleeve two is inserted from the upper end of the floating rotating shaft. Spring two is inserted from the upper end of the floating rotating shaft. Bushing one is inserted from the upper end of the floating rotating shaft. Connecting seat two is fixed to sleeve three. The mounting base is installed on the upper surface of the measuring mounting base. Connecting seat three is connected to connecting seat two. Coupling one is connected to the shaft on connecting seat three. The lower end face of the support shaft is installed on the upper surface of the measuring mounting base. The lower end face of the reducer mounting base is installed on the upper surface of the support shaft. The support shaft is installed on the measuring mounting base. The reducer is inserted into coupling one and connected to the upper surface of the reducer mounting base. Next, the servo motor is installed on the reducer, the sleeve two passes through the sleeve three and is used to limit the connection between the mounting surface of the counterweight linear bearing and the upper end face of the measuring mounting base, the upper end face of the counterweight floating shaft two is installed on the lower end face of the counterweight connecting plate two, the lower end of the counterweight floating shaft two is fitted with the buffer pad two, the counterweight floating shaft two is installed in the counterweight linear bearing, the upper end face of the connecting plate five is installed on the lower end face of the counterweight floating shaft two, the lower end face of the counterweight support shaft is installed on the upper end face of the counterweight connecting plate two, the counterweight block is loaded onto the upper end face of the counterweight support shaft, the floating connecting sleeve and the clamping block three are connected by a set screw, the floating shaft two is installed on the counterweight connecting sleeve by a set screw, and the counterweight connecting sleeve and the floating connecting sleeve are connected by a limit bolt.The second clamping block is installed on the floating sleeve, and the floating sleeve is connected to the floating connecting sleeve by the second connecting bolt. The first spring is installed on the upper end face of the floating sleeve, and the first spring is connected to the floating connecting sleeve by the adjusting bolt.

[0019] Based on this, the supporting floating fixing assembly includes a positioning pin, a sleeve seat, a cylinder, a sensing block, a limiting bolt, a bushing, a floating joint, and a limiting bolt. The two bushings are respectively installed at both ends of the sleeve seat. The floating joint is connected to the piston rod of the cylinder. The positioning pin is connected to the floating joint and is fitted into the inner holes of the two bushings. The cylinder is installed on the upper end face of the sleeve seat. The limiting bolts are installed on the upper and lower sides of the sleeve seat, respectively. The sensing block is installed on the upper end of the piston rod of the cylinder. The lower end face of the sleeve seat is installed on the floating plate.

[0020] Based on this, the placement platform includes an adjustment block two, a frame one, a support column, a support block two, a rhombus positioning pin, a circular positioning pin, a support block three, and a support block four. The adjustment block two and the frame one are installed on the base. The lower end of the support column is installed on the upper surface of the frame one. The lower end of the support block two is installed on the upper surface of the support column. The lower end of the rhombus positioning pin and the circular positioning pin are installed on the upper surface of the frame one. The support blocks three and four are installed on the upper surface of the frame one.

[0021] Based on this, the lifting unit includes a frame two, a lifting platform, a connecting seat four, a floating joint two, a cylinder mounting seat two, a lead screw, a connecting seat six, a pin, a connecting seat five, a self-locking cylinder, sheet metal parts, a cable chain, a coupling two, a servo motor two, cable chain sheet metal parts, a slide rail mounting seat, a slide rail, a lead screw connecting seat one, a slider, a lead screw nut mounting seat, a lead screw nut, a lead screw connecting seat two, and a motor mounting seat. The frame two is mounted on the base, the slide rail mounting seat is mounted on the frame two, the slide rail is mounted on the slide rail mounting seat, the motor mounting seat is mounted on the slide rail mounting seat, and the lead screw connecting seat one is mounted on the motor mounting seat. The measuring fixing plate and the adjusting block one are mounted on the upper surface of the lifting platform. The lead screw is fitted into the lead screw connecting seat one, the lead screw nut is mounted on the lead screw, and the lead screw nut mounting seat is mounted on the lead screw nut. The second lead screw connecting seat is installed into the lower end of the lead screw and fixed by a snap ring. The second lead screw connecting seat is installed on the second frame. The slider is installed on the slide rail. The cable chain sheet metal part is installed on the second frame. The second cylinder mounting seat is installed on both sides of the second frame. The self-locking cylinders are respectively installed on the second cylinder mounting seat. The second floating joint is installed on the piston rod of the self-locking cylinder. The sheet metal part is installed on the lifting platform. The lifting platform is installed on the slider and lead screw nut mounting seats. The fourth connecting seat is installed on the lifting platform and connected to the second floating joint. The second coupling is installed on the upper end of the lead screw. The second servo motor is installed on the second coupling and connected to the motor mounting seat. The sixth connecting seat is installed on the second frame. The fifth connecting seat is installed on the second frame. The pin is placed in the fifth connecting seat. The cable chain is installed on the sheet metal part and the cable chain sheet metal part.

[0022] Based on this, the large-value standard component includes a base, positioning sleeves, buffer pad three, handle, mating surface support block, positioning pin two, input shaft standard block, intermediate shaft standard block, output shaft standard block, and sensor plate. The two positioning sleeves are installed on the lower end surface of the base, the buffer pad three is installed on the lower end surface of the base, the sensor plate is installed on the lower end surface of the base, the handle is installed on both sides of the base, the mating surface support block is installed on the upper end surface of the base, the input shaft standard block, intermediate shaft standard block, and output shaft standard block are installed on the upper end surface of the base, and the positioning pin two is installed on the upper end surface of the base.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] (1) In this utility model, the line area of ​​the probe distribution on the shell mating surface needs to cover the measurement probe distribution of the input shaft ball bearing a, the measurement probe distribution of the intermediate shaft ball bearing b, and the measurement probe distribution of the output shaft ball bearing c, which can improve the measurement accuracy of the equipment.

[0025] (2) In this utility model, the workpiece is clamped by a linkage self-locking mechanism through the housing clamping. One of the two position sensors is used for clamping and the other is used for opening. The self-locking function is realized through the self-locking function of the linkage mechanism.

[0026] (3) In this utility model, by measuring the input shaft and intermediate shaft, the measuring component of the outer end face of the input shaft ball bearing is used with the up and down floating function, which can also be floated in all directions. The floating angle is 2°, so as to ensure that the clamping block one is always in contact with the outer end face of the bearing. The bearing is preloaded by the load force of the counterweight block one, and the accuracy of the measurement is measured by the probe two.

[0027] (4) In this utility model, the support block is made into an integral surface to prevent impurities and dust on the shell joint surface from being found at this work station, thus avoiding the quality risk of subsequent workpieces; the support floating component can float up and down in the Z direction and float ±1mm in the X / Y plane to ensure the accuracy of positioning when the floating component presses the workpiece; the adjustment block is adjusted in the X / Y direction by two bolts during equipment debugging, one bolt is tightened and the other bolt is pushed, and the two disc springs float up and down in the Z direction. Due to the force generated by the disc springs, the bolts have an anti-loosening function.

[0028] (5) In this utility model, the output shaft shift fork floats up and down and rotates to couple the differential one-axis in the output shaft tapered bearing outer end face measuring assembly. After coupling, it starts to rotate. Then, it is loaded onto the tapered bearing outer end face of the output shaft tapered bearing measuring assembly by a counterweight block. The semi-circular boss of pressure block three is connected to the semi-circular groove of floating shaft two, and a limit of 2° is set for universal floating. The shift fork is made of 5Cr4W3Mo2V material, and the heat treatment hardness reaches HRC42~46, which improves the service life.

[0029] (6) In this utility model, the self-locking cylinder is used to balance the total weight of the lifting platform and the set unit, thereby increasing the service life of the lead screw and reducing the torque and power of the servo motor 2; the large-value standard part is used to verify the stability, accuracy, repeatability and reproducibility of the equipment. The installation method of the small-value standard part is the same as that of the large-value standard part. The small-value standard part is mainly used for measurement benchmark, workpiece 1 measurement calculation, equipment verification and other functions. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the electric drive shaft high dynamic measurement device of this utility model;

[0031] Figure 2 It is a structural diagram of the workpiece;

[0032] Figure 3 It is the height of the workpiece to be measured;

[0033] Figure 4 This is a schematic diagram of the probe layout;

[0034] Figure 5 This is a structural diagram of the measuring unit of this utility model.

[0035] Figure 6 This is a schematic diagram of the workpiece positioning and clamping of this utility model;

[0036] Figure 7 This is a diagram of the clamping assembly mechanism of this utility model;

[0037] Figure 8 This is a structural diagram of the floating support component of this utility model from one perspective;

[0038] Figure 9 This is another structural view of the supporting floating component of this utility model;

[0039] Figure 10 This is a side view of the supporting floating component of this utility model;

[0040] Figure 11 This is a structural diagram of the input shaft ball bearing outer end face measuring assembly of this utility model;

[0041] Figure 12 This is a side view of the input shaft ball bearing outer end face measuring assembly of this utility model.

[0042] Figure 13 This is another side view of the input shaft ball bearing outer end face measuring assembly of this utility model;

[0043] Figure 14 This is a front structural view of the output shaft tapered bearing outer end face measuring assembly of this utility model;

[0044] Figure 15 This is a reverse structural diagram of the output shaft tapered bearing outer end face measuring assembly of this utility model;

[0045] Figure 16 This is a side view of the output shaft tapered bearing outer end face measuring assembly of this utility model;

[0046] Figure 17 This is a side view of the supporting floating fixing component of this utility model;

[0047] Figure 18 This is a side view of the supporting floating fixing component of this utility model;

[0048] Figure 19 This is a structural diagram of the placement platform of this utility model;

[0049] Figure 20 This is a front view of the descending unit structure of this utility model;

[0050] Figure 21This is a reverse structural diagram of the lifting unit of this utility model;

[0051] Figure 22 This is a front view of the lifting unit of this utility model;

[0052] Figure 23 This is a structural diagram of the standard part of this utility model;

[0053] In the diagram: 1. Workpiece, 2. Measuring unit, 3. Lifting unit, 4. Placement platform, 5. Base, 6. Small standard part, 7. Large standard part.

[0054] 1-1. Housing; 1-2. Input shaft; 1-3. Intermediate shaft; 1-4. Output shaft; 101. Positioning 1; 102. Positioning 2.

[0055] 2-1 Clamping assembly; 2-1a Clamping assembly one; 2-1b Clamping assembly two; 2-1c Clamping assembly three; 2-1d Clamping assembly four.

[0056] 2-2. Support Floating Assembly; 2-3. Input Shaft Ball Bearing Outer End Face Measurement Assembly; 2-4. Intermediate Shaft Tapered Bearing Outer End Face Measurement Assembly; 2-5. Output Shaft Tapered Bearing Outer End Face Measurement Assembly; 2-6. Support Floating Fixing Assembly; 2-7. Floating Mechanism; 2-101. Force-Multiplying Cylinder; 2-102. Connecting Seat 1; 2-103. Cylinder Mounting Seat 1; 2-104. Sensor Bracket 1; 2-105. Position Sensor 1; 2-106. Pressure Block; 2-107. Connecting Rod 2; 2-108. Pull Rod; 2-109. Connecting Rod 3; 2-110. Connecting Rod 1; 2-111. Rotating Shaft 2; 2-112. Rotating Shaft 1; 2-113. Rotating Shaft 3.

[0057] 2-201, Support Block 1; 2-202, Positioning Pin Sleeve 1; Positioning Pin Sleeve 2; 2-203, 2-204, Probe 1; 2-205, Measuring Fixing Plate; 2-206, Floating Plate; 2-207, Adjusting Block 1; 2-208, Pin Sleeve 1; 2-209, Pin Sleeve 2; 2-7, Floating Mechanism; 2-210, Support Base 1; 2-211, Measuring Mounting Base.

[0058] 2-301, Bearing Sleeve; 2-302, Clamping Block 1; 2-303, Connecting Block 1; 2-304, Probe 2; 2-305, L-Connecting Block; 2-306, Sleeve 1; 2-307, Counterweight Floating Shaft 1; 2-308, Counterweight Connecting Plate 1; 2-309, Counterweight Block 1; 2-310, Buffer Pad 1; 2-311, Fixed Shaft 1; 2-312, Floating Shaft 1; 2-313, Linear Bearing 1; 2-314, Shaft Sleeve 2; 2-315, Limiting Shaft 1; 2-316, Linear Bearing 2; 2-317, Snap Ring 1; 2-318, Fixed Shaft 2.

[0059] 2-501, Shift fork; 2-502, Quick-change shaft; 2-503, Floating rotary shaft; 2-504, Clamping block two; 2-505, Probe connecting plate one; 2-506, Probe connecting plate two; 2-507, Probe connecting plate three; 2-508, Probe three; 2-509, Spring one; 2-510, Adjusting bolt; 2-511, Limit bolt; 2-512, Floating connecting sleeve; 2-513, Counterweight connecting sleeve; 2-514, Connecting plate four; 2-515, [unclear - possibly a typo, should be "counterweight"]. Floating Shaft II, 2-516; Sensor I, 2-517; Counterweight Linear Bearing, 2-518; Buffer Pad II, 2-519; Counterweight Support Shaft, 2-520; Reducer Mounting Base, 2-521; Reducer, 2-522; Servo Motor I, 2-523; Counterweight Block, 2-524; Sensor II, 2-525; Sensor Bracket II, 2-526; Support Shaft, 2-527; Sensor Bracket III, 2-528; Sensor III, 2-529; Sensor Bracket IV 2-530, Sensor 4; 2-531, Sensor bracket 5; 2-532, Sensor 5; 2-533, Sensor bracket 6; 2-534, Sensor 6; 2-535, Sensor bracket 7; 2-536, Sensor 7; 2-537, Sensor bracket 8; 2-538, Detection ring; 2-539, Connecting bolt; 2-540, Clamping block 3; 2-541, Floating shaft 2; 2-542, Connecting plate 5; 2-543, Deep groove ball bearing 1; 2-54 4. Flat key, 2-545. Sleeve 2, 2-546. Sleeve 3, 2-547. Deep groove ball bearing 2, 2-548. Spring 2, 2-549. Connecting seat 2, 2-550. Connecting seat 3, 2-551. Coupling 1, 2-552. Bushing 1, 2-553. Mounting seat, 2-554. Linear bearing 3, 2-555. Bushing 2, 2-556. Sleeve 4, 2-557. Counterweight connecting plate 2, 2-558. Floating sleeve, 2-559. Connecting bolts.

[0060] 2-601, Positioning Pin 1; 2-602, Sleeve Seat; 2-603, Cylinder; 2-604, Sensor 8; 2-605, Sensor Bracket 9; 2-606, Sensing Block; 2-607, Limit Bolt 1; 2-608, Bushing; 2-609, Floating Joint 1; 2-610, Limit Bolt 2; 2-611, Sensor 9.

[0061] 2-701 Floating fixed plate; 2-702 Thrust bearing one; 2-703 Connecting plate one; 2-704 Connecting plate two; 2-705 Thrust bearing two; 2-706 Bushing one; 2-707 Disc spring; 2-708 Connecting plate three; 2-709 Floating shaft; 2-710 Bolts.

[0062] 3-1. Frame Two; 3-2. Lifting Platform; 3-3. Connecting Seat Four; 3-4. Floating Joint Two; 3-5. Cylinder Mounting Seat Two; 3-6. Lead Screw; 3-7. Connecting Seat Six; 3-8. Sensor Bracket Fifteen; 3-9. Sensor Thirteen; 3-10. Pin; 3-11. Connecting Seat Five; 3-12. Sensor Twelve; 3-13. Sensor Bracket Fourteen; 3-14. Self-Locking Cylinder; 3-15. Sheet Metal Parts; 3-16. Cable Chain; 3-17. Coupling Two; 3-18. Servo Motor 2, 3-19; Cable chain sheet metal parts, 3-20; Slide rail mounting base, 3-12; Sensor bracket sixteen, 3-22; Sensor fourteen, 3-23; Sensor fifteen, 3-24; Sensor bracket seventeen, 3-25; Sensor sixteen, 3-26; Sensor sensing bracket, 3-27; Slide rail, 3-28; Lead screw connecting seat one, 3-29; Slider, 3-30; Lead screw connecting seat two, 3-32; Lead screw nut mounting base, 3-31; Lead screw nut, 3-33; Motor mounting base.

[0063] 4-1. Adjustment Block Two; 4-2. Frame One; 4-3. Support Column; 4-4. Support Block Two; 4-5. Diamond-shaped Positioning Pin; 4-6. Circular Positioning Pin; 4-7. Through-beam Sensor; 4-8. Sensor Support Eleven; 4-9. Sensor Support Ten; 4-10. Support Block Three; 4-11. Support Block Four; 4-12. Sensor Eleven; 4-13. Sensor Ten; 4-14. Sensor Support Thirteen; 4-15. Sensor Support Twelve.

[0064] 7-1. Base; 7-2. Positioning sleeve; 7-3. Buffer pad three; 7-4. Handle; 7-5. Joint surface support block; 7-6. Positioning pin two; 7-7. Input shaft standard block; 7-8. Intermediate shaft standard block; 7-9. Output shaft standard block; 7-10. Sensor sensing plate. Detailed Implementation

[0065] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0066] refer to Figures 1-23 A workpiece 1 includes a housing 1-1, an input shaft 1-2, an intermediate shaft 1-3, and an output shaft 1-4. The description in this application is merely illustrative; this equipment is applicable to other electric drive measurements. By measuring and calculating the distance Ha from the mating surface of the housing 1-1 to the outer end face of the ball bearing a of the input shaft, the distance Hb from the mating surface of the housing 1-1 to the outer end face of the tapered bearing b of the intermediate shaft, and the distance Hc from the mating surface of the housing 1-1 to the outer end face of the tapered bearing c of the output shaft, this process is the most crucial step in the electric drive production process. When measuring the outer end face of the bearing, a preload needs to be applied to the bearing, and the electric drive rotation needs to be simulated to ensure measurement accuracy.

[0067] The workpiece 1 to be measured needs to be measured using a high-precision digital probe with a resolution of 0.1. The probes transmit 900 to 1200 data points per second. The arrangement of the probes on workpiece 1 and the measurement method have a certain impact on the measurement accuracy. The measurement method adopts the three-point measurement method. The probe arrangement is shown in the figure. T1, T2, and T3 are the measurement probe distributions on the mating surface of housing 1-1. T4, T5, and T6 are the measurement probe distributions on ball bearing a of input shaft 1-2. T7, T8, and T9 are the measurement probe distributions on ball bearing b of intermediate shaft 1-3. T10, T11, and T12 are the measurement probe distributions on ball bearing c of output shaft 1-4. The connecting area of ​​the probe distributions on the mating surface of housing 1-1 needs to encompass the measurement probe distributions on ball bearing a of input shaft 1-2, ball bearing b of intermediate shaft 1-3, and ball bearing c of output shaft 1-4.

[0068] This utility model discloses a high dynamic measurement device for an electric drive shaft, including a workpiece 1, a measurement unit 2, a lifting unit 3, a placement platform 4, a base 5, a small value standard part 6, and a large value standard part 7. The measurement unit 2 includes a clamping assembly 2-1, a support floating assembly 2-2, an input shaft ball bearing outer end face measurement assembly 2-3, an intermediate shaft tapered bearing outer end face measurement assembly 2-4, an output shaft tapered bearing outer end face measurement assembly 2-5, a support floating fixing assembly 2-6, and a floating mechanism 2-7, which are used to clamp and measure the workpiece 1.

[0069] The workpiece 1 is positioned and clamped according to the 321 principle. Positioning 1 101 and positioning 2 102 are used for rotation in the X / Y / Z directions and translation in the X / Y directions. Clamping assembly 2-1 adopts clamping assembly 1 2-1a, clamping assembly 2-1b, clamping assembly 3 2-1c and clamping assembly 4 2-1d respectively, and is used for translation in the Z direction.

[0070] The clamping assembly 2-1 employs a linkage self-locking mechanism, including a multiplier cylinder 2-101, connecting seat 1 2-102, cylinder mounting seat 1 2-103, sensor bracket 1 2-104, position sensor 1 2-105, pressure block 2-106, connecting rod 2-107, pull rod 2-108, connecting rod 3 2-109, connecting rod 1 2-110, rotating shaft 2-111, rotating shaft 1 2-112, and rotating shaft 3 2-113, which connect... Install the lower end face of connector 2-102 onto the upper end face of floating plate 2-206, one on each side. Install the upper end face of multiplier cylinder 2-101 onto the lower end face of cylinder mounting seat 2-103. Install the lower end face of tie rod 2-108 onto the piston rod end face of multiplier cylinder 2-101. Connect the two connecting rods 2-107 to the left and right ends of tie rod 2-108 via a rotating shaft 2-113. Then connect another rotating shaft 2-113 to the other end of the connecting rod. 2-113 Connect the pressure block 2-106 to the connecting rod 2-107. Connect the left and right connecting rods 2-110 to the pressure block 2-106 and the left and right sides of the cylinder mounting base 2-103 via the two rotating shafts 2-111. Then connect the left and right connecting rods 3-109 to the sides of the left and right connecting rods 2-110 via the rotating shaft 2-112. After the above installation, install the lower end face of the cylinder mounting base 2-103 onto the upper end face of the two connecting seats 2-102. Install the lower end face of the sensor bracket 2-104 onto the upper end face of the cylinder mounting base 2-103. Fix the two position sensors 2-105 onto the sensor bracket 2-104 for clamping workpiece 1. One of the two position sensors 2-105 is used for clamping sensing and the other is used for opening sensing. The self-locking function is achieved through the self-locking function of the linkage mechanism.

[0071] The floating support assembly 2-2 includes support block 1 2-201, positioning pin sleeve 1 2-202, positioning pin sleeve 2 2-203, three probes 1 2-204, measuring fixing plate 2-205, floating plate 2-206, adjusting block 1 2-207, pin sleeve 1 2-208, pin sleeve 2 2-209, floating mechanism 2-7, support seat 1 2-210, and measuring mounting seat 2-211. The lower end face of support block 1 2-201 is installed onto the upper end face of floating plate 2-206. The upper end face of support block 1 2-201 is the mating surface of shell 1-1. Positioning pin sleeve 1 2-202 and positioning pin sleeve 2-203 are fixed to support block 1 2-201 by set screws. Three probes 1 2-204 are respectively installed onto support block 1 2-201. Then, pin sleeve 1 2-208 and pin sleeve 2-209 are installed onto the lower end face of measuring fixing plate 2-205. The upper end face of measuring fixing plate 2-205 is installed onto the upper end face of lifting platform 3-2. Adjusting block 1 2 -207 is installed on the upper surface of the lifting platform 3-2. The floating support assembly 2-2 is adjusted in X / Y by two bolts, one bolt is tightened and the other bolt is pushed. The four floating mechanisms 2-7 connect the floating plate 2-206 and the measuring fixed plate 2-205 and can move horizontally in the X / Y plane with a moving distance of ±1mm. They can also move up and down in the Z direction. The lower surfaces of the four support seats 2-210 are then installed on the upper surface of the floating plate 2-206, and the lower surface of the measuring mounting seat 2-211 is installed on the upper surface of the four support seats 2-210.

[0072] In summary, the support block 2-201 is made as a single piece to prevent impurities and dust on the mating surface of the shell 1-1 from being detected at this station, thus avoiding quality risks for subsequent workpiece 1; the support floating component 2-2 can float up and down in the Z direction and float ±1mm in the X / Y plane to ensure the positioning accuracy of the floating component 2-2 when pressing the workpiece 1; the adjustment block 2-207 allows for X / Y adjustment of the support floating component 2-2 during equipment debugging using two bolts, one bolt for tightening and the other for pushing.

[0073] The floating mechanism 2-7 includes a floating fixed plate 2-701, a thrust bearing 2-702, a floating plate 2-206, a connecting plate 2-703, a bolt 2-710, a floating shaft 2-709, a connecting plate 2-704, a thrust bearing 2-705, a bushing 2-706, a disc spring 2-707, and a connecting plate 3-708. The lower end face of the floating fixed plate 2-701 is placed on the upper end face of the measuring fixed plate 2-205. The upper cover plate of the thrust bearing 2-702 is reversed and placed on the upper end face of the floating fixed plate 2-701. The lower end face of the connecting plate 2-703 is connected to the reversed cover plate of the thrust bearing 2-702, and its upper end face is connected to the lower end face of the floating plate 2-206. The lower end face of the connecting plate 2-704 is placed on the upper end face of the floating plate 2-206, and the lower end face of the thrust bearing 2-705 is... The cover plate is reversed and connected to the upper end face of connecting plate 2-704. The floating shaft 2-709 is then inserted into the holes of thrust bearing 2-705, connecting plate 2-704, floating plate 2-206, connecting plate 1-703, thrust bearing 1-702, and floating fixing plate 2-701. This increases the floating range, improves accuracy, and reduces costs. The hole diameters of connecting plate 2-704, floating plate 2-206, and connecting plate 1-2-703 are 2mm larger than the shaft diameter of floating shaft 2-709. The diameter of the hole in the floating fixing plate 2-701 is equal to the diameter of the floating shaft 2-709. Then, the bushing 2-706 is fitted into the floating shaft 2-709, with the hole diameter of the bushing 2-706 equal to the diameter of the floating shaft 2-709. Two disc springs 2-707 are then fitted into the diameter of the floating shaft 2-709, contacting the upper end face of the bushing 2-706. The lower end face of the connecting plate 2-708 is then contacted with the disc springs 2-707. Bolt 2-710 passes through the floating shaft. The inner hole of shaft 2-709 is locked with the measuring fixing plate 2-205, thus forming a floating mechanism 2-7. Two disc springs 2-707 cause the Z-axis to float up and down. Due to the force generated by the disc springs, bolt 2-710 has an anti-loosening function. Because the diameter of the floating shaft 2-709 is 2mm smaller than the hole diameter of connecting plate 2-704, floating plate 2-206, and connecting plate 2-703, the measuring unit 2 can float ±1mm in the X / Y plane.

[0074] The input shaft ball bearing outer end face measuring assembly 2-3 includes a bearing sleeve 2-301, a clamping block 1 2-302, a connecting block 1 2-303, three probes 2-304, three L-connecting blocks 2-305, a sleeve 1 2-306, a counterweight floating shaft 1 2-307, a counterweight connecting plate 1 2-308, a counterweight block 1 2-309, a buffer pad 1 2-310, a fixed shaft 1 2-311, a floating shaft 1 2-312, a linear bearing 1 2-313, a bushing 2 2-314, a limiting shaft 1 2-315, a linear bearing 2 2-316, a snap ring 1 2-317, and a fixed shaft 2 2-318. The clamping block 2-302 and the connecting block 2-303 are connected by the fixed shaft 2-311. The limiting shaft 2-315 passes through the floating shaft 2-312, the bushing 2-314, and the sleeve 2-306 to limit the floating range. The semi-circular boss of the clamping block 2-302 contacts the semi-circular groove of the connecting block 2-303 to form a universal floating. By setting the clamping block 2-302 and the connecting block 2-303 to form a 2° floating limit, the bearing sleeve 2-301 is connected to the connecting block 2-303 by the set screw. Connect the connecting block 2-303, install the lower end face of sleeve 2-306 onto the upper end face of measuring mounting base 2-211, install linear bearing 2-313 into the hole of sleeve 2-306, then install bushing 2-314 into the hole of sleeve 2-306, and then install linear bearing 2-316 into the hole of sleeve 2-306. Secure sleeve 2-306 with snap ring 2-317, and install buffer pad 2-310 onto the upper end face of sleeve 2-306, thereby enabling the linear shaft... Bearing 1 2-313, bushing 2-314, linear bearing 2-316, buffer pad 1 2-310, and sleeve 1 2-306 form a whole. The floating shaft 1 2-312 is fixed to the connecting block 1 2-303 by fixing shaft 2-318. The floating shaft 1 2-312 is then passed through the inner holes of linear bearing 1 2-313, bushing 2-314, linear bearing 2-316, and buffer pad 1 2-310. Finally, the lower end face of the counterweight connecting plate 1 2-308 is connected to the floating shaft 1 2-312. 12. Fix the upper end face, pass the two counterweight floating shafts 2-307 through the two linear bearings 2-554, and connect them to the counterweight connecting plate 2-308. Finally, load the counterweight block 2-309 onto the upper end face of the counterweight connecting plate 2-308. In summary, the clamping block 2-302 can be subjected to a certain upward force and rise. When there is no force, it falls freely. The buffer pad 2-310 is used to buffer the free fall, thereby avoiding damage to the equipment caused by hard contact. Install the three L-connecting blocks 2-305 onto the three mounting surfaces on the side of the sleeve 2-306, and then fix the three probes 2-304 onto the three L-connecting blocks 2-305. The probes of the three probes 2-304 are in contact with the clamping block 2-302.In summary, the input shaft ball bearing outer end face measuring component 2-3 can float up and down, and can also float in all directions at an angle of 2°. This ensures that the clamping block 2-302 is always in contact with the outer end face of the bearing. Then, the preload force is applied to the bearing by the counterweight block 2-309, which improves the accuracy of the probe 2-304 measurement.

[0075] The intermediate shaft tapered bearing outer end face measuring assembly 2-4 and the input shaft ball bearing outer end face measuring assembly 2-3 have the same installation and function.

[0076] The output shaft tapered bearing outer end face measuring assembly 2-5 includes a shift fork 2-501, a quick-change shaft 2-502, a floating rotary shaft 2-503, a clamping block two 2-504, a spring one 2-509, an adjusting bolt 2-510, a limit bolt 2-511, a probe connecting plate one 2-505, three probes three 2-508, a connecting plate four 2-514, a counterweight floating shaft two 2-515, a sensor one 2-516, four counterweight linear bearings 2-517, and a buffer pad two 2-518. Sensor bracket 2-525, Sensor 2-524; Two counterweight support shafts 2-519, Reducer mounting base 2-520, Reducer 2-521, Servo motor 1 2-522, Counterweight block 2-523, Probe connecting plate 2-506, Floating connecting sleeve 2-512, Counterweight connecting sleeve 2-513, Probe connecting plate 3 2-507, Measuring mounting base 2-211, Five support shafts 2-526, Sensor bracket 3 2-527, Sensor 3 2 -528, Sensor bracket four 2-529, Sensor four 2-530, Sensor bracket five 2-531, Sensor five 2-532, Sensor bracket six 2-533, Sensor six 2-534, Detection ring 2-538, Sensor bracket seven 2-535, Sensor seven 2-536, Linear bearing three 2-554, Sensor bracket eight 2-537, Connecting bolt one 2-539, Clamping block three 2-540, Floating shaft two 2-541, Connecting plate five 2-54 2. Deep groove ball bearing 1 2-543, two flat keys 2-544, sleeve 2 2-545, sleeve 3 2-546, deep groove ball bearing 2 2-547, spring 2 2-548, connecting seat 2 2-549, connecting seat 3 2-550, coupling 1 2-551, bushing 1 2-552, mounting seat 2-553, bushing 2 2-555, sleeve 4 2-556, two counterweight connecting plates 2 2-557, floating sleeve 2-558, connecting bolt 2 2-559.

[0077] Connect the shift fork 2-501, quick-change shaft 2-502, and floating rotary shaft 2-503 using connecting bolt 2-539. The shift fork 2-501 is coupled to the differential slotted shaft in the output shaft 1-4. The shift fork 2-501 is made of 5Cr4W3Mo2V material with a heat treatment hardness of HRC42~46. Because the shift fork 2-501 is prone to breakage, the quick-change shaft 2-502 makes it easier to replace. Install the detection ring 2-538 onto the floating rotary shaft 2-503. Insert bushing 2-555 into sleeve 2-556. Sleeve 2-556 is installed in sleeve 2-546. Connect the two flat keys 2-5... 44. Install the bushing 2-552 into the slots on both sides of the floating rotating shaft 2-503, then install the bushing 2-552 into the connecting seat 2-549. The connecting seat 2-549 connects to the sleeve 2-546. Then install the deep groove ball bearing 2-547 into the mounting hole on the upper end face of the mounting seat 2-553, and then install the deep groove ball bearing 2-543 into the mounting hole on the lower end face of the mounting seat 2-553. Fit the sleeve 2-546 into the inner diameter of the deep groove ball bearing 2-543 and the deep groove ball bearing 2-547. Then install the floating rotating shaft 2-503 into the sleeve 2-546 and fit the two flat keys 2-544 into the sleeve 2-546. Inside the groove, insert bushing 2-55 from the lower end of the floating rotating shaft 2-503, and simultaneously fix sleeve 4 2-556 and sleeve 3 2-546. Insert sleeve 2-545 from the upper end of the floating rotating shaft 2-503, then insert spring 2-548 from the upper end of the floating rotating shaft 2-503. Insert bushing 1 2-552 from the upper end of the floating rotating shaft 2-503, and simultaneously fix connecting seat 2-549 and sleeve 3 2-546. This allows the floating rotating shaft 2-503 to move up and down and rotate. Install mounting seat 2-553 onto the upper surface of measuring mounting seat 2-211, and connect... Connector 3 2-550 is connected to connector 2 2-549, and coupling 1 2-551 is connected to the shaft on connector 3 2-550. The lower end face of the five support shafts 2-526 is installed onto the upper end face of the measuring mounting base 2-211. Then, the lower end face of the reducer mounting base 2-520 is installed onto the upper end face of the five support shafts 2-526. Then, the reducer 2-521 is installed into coupling 1 2-551 and connected to the upper end face of the reducer mounting base 2-520. Then, servo motor 1 2-522 is installed onto reducer 2-521. This completes the installation of the driving function for the floating rotary shaft 2-503. In summary, it is used to drive the output shaft 1-4.Sensor bracket 3 (2-527) is installed on the upper surface of reducer mounting base 2-520; sensor 3 (2-528) is installed on sensor bracket 3 (2-527); sensor bracket 4 (2-529) is installed on the upper surface of reducer mounting base 2-520; sensor 4 (2-530) is installed on sensor bracket 4 (2-529); sensor bracket 5 (2-531) is installed on the upper surface of reducer mounting base 2-520; sensor 5 (2-532) is installed on sensor bracket 5 (2-531); sensor bracket 6 (2-533) is installed on the upper surface of reducer mounting base 2-520; sensor 6 (2-534) is installed on sensor bracket 6 (2-533). Sensors 3 (2-528) and 4 (2-530) are used to detect the floating of the input shaft ball bearing outer end face measuring assembly 2-3. Sensor 5 (2-532) and sensor... Device 6 2-534 is used to detect the floating of the measuring assembly 2-4 on the outer end face of the intermediate shaft tapered bearing. Connect the mounting surfaces of the four counterweight linear bearings 2-517 to the upper end face of the measuring mounting base 2-211. Install the upper end faces of the two counterweight floating shafts 2-515 on the lower end face of a counterweight connecting plate 2-557. Install two in this manner. Slide the two installed assemblies under the buffer pad 2-518 from the lower end of the counterweight floating shaft 2-515. Then, install the counterweight floating shaft 2-515 into the counterweight linear bearing 2-517. Next, install the upper end face of the connecting plate 4 2-514 onto the lower end face of the four counterweight floating shafts 2-515. Then, install the lower end faces of the two counterweight support shafts 2-519 onto the upper end faces of the two counterweight connecting plates 2-557 respectively. Finally, load the counterweight block 2-523 onto the upper end face of the counterweight support shaft 2-519. Install sensor bracket 2-525 onto the upper surface of measuring mounting base 2-211. Install sensor 2-524 onto sensor bracket 2-525. Install sensor bracket 7-535 onto the upper surface of measuring mounting base 2-211. Install sensor 7-536 onto sensor bracket 7-535. Sensors 2-524 and 7-535 are used to detect the floating of the counterweight mechanism of the measuring assembly 2-5 on the outer end face of the output shaft tapered bearing. Install sensor bracket 8-537 onto mounting base 2-553. Install sensor 1-516 onto sensor bracket 8-537. This is used to detect the floating of the floating rotating shaft 2-503.Connect the floating connecting sleeve 2-512 to the clamping block 2-540 using a set screw. Install the floating shaft 2-541 onto the counterweight connecting sleeve 2-513 using a set screw. Connect the counterweight connecting sleeve 2-513 to the floating connecting sleeve 2-512 using a limit bolt 2-511, allowing it to float up and down. Install the clamping block 2-504 onto the floating sleeve 2-558. Connect the floating sleeve 2-558 to the floating connecting sleeve 2-512 using a connecting bolt 2-559. Spring 2-5... 09 is installed on the upper end face of the floating sleeve 2-558. The adjusting bolt 2-510 is passed to the spring 2-509 and connected to the floating connecting sleeve 2-512. The probe connecting plate 2-505, the probe connecting plate 2-506 and the probe connecting plate 2-507 are installed on the floating plate 2-206. The three probes 2-508 are respectively installed on the probe connecting plate 2-505, the probe connecting plate 2-506 and the probe connecting plate 2-507, and are used to detect the outer end face of the output shaft tapered bearing of workpiece 1.

[0078] In summary, the shift fork 2-501 floats up and down and rotates to couple the differential slotted shaft in the output shaft tapered bearing outer end face measuring assembly 2-5. After coupling, it begins to rotate and is then loaded onto the outer end face of the tapered bearing of the output shaft tapered bearing outer end face measuring assembly 2-5 through the counterweight block 2-523. It is connected to the semi-circular groove of the floating shaft 2-541 through the semi-circular boss of the pressure block 3 2-540, and is set with a limit of 2° for omnidirectional floating.

[0079] The supporting floating fixing assembly 2-6 includes positioning pin 1 2-601, sleeve seat 2-602, cylinder 2-603, sensor 8 2-604, sensor bracket 9 2-605, sensing block 2-606, limit bolt 1 2-607, bushing 2-608, floating joint 1 2-609, limit bolt 2 2-610, and sensor 9 2-611.

[0080] Install the two bushings 2-608 into both ends of the sleeve seat 2-602. Connect the floating connector 2-609 to the piston rod of the cylinder 2-603. Connect the locating pin 2-601 to the floating connector 2-609. Then, insert the locating pin 2-601 into the inner hole of the two bushings 2-608. Install the cylinder 2-603 onto the upper surface of the sleeve seat 2-602. Install the limiting bolts 2-607 and 2-610 on the upper and lower sides of the sleeve seat 2-602 respectively to prevent the bushings 2-608 from falling off. Then, install the sensing block 2... -606 is installed on the upper end of the piston rod of cylinder 2-603. Sensor bracket 9 2-605 is installed on the upper end face of cylinder 2-603. Sensor 8 2-604 and sensor 9 2-611 are respectively installed on sensor bracket 9 2-605 to identify the rise and fall of the cylinder. Finally, the lower end face of sleeve seat 2-602 is installed on floating plate 2-206, two of them are installed. After cylinder 2-603 extends, positioning pin 1 2-601 is positioned with pin sleeve 1 2-208 and pin sleeve 2-209, which is used to lock the supporting floating component 2-2.

[0081] The placement platform 4 includes adjustment block 2 4-1, frame 1 4-2, support column 4-3, support block 2 4-4, rhomboid positioning pin 4-5, circular positioning pin 4-6, through-beam sensor 4-7, sensor bracket 11 4-8, sensor bracket 10 4-9, support block 3 4-10, support block 4 4-11, sensor 11 4-12, sensor 10 4-13, sensor bracket 13 4-14, and sensor bracket 12 4-15.

[0082] Adjusting block 2 4-1 is installed on base 5 to adjust the position of placement platform 4. Frame 1 4-2 is installed on base 5. The lower end of support column 4-3 is installed on the upper surface of frame 1 4-2. Then, the lower end of support block 2 4-4 is installed on the upper surface of support column 4-3. The lower ends of rhomboid positioning pin 4-5 and circular positioning pin 4-6 are installed on the upper surface of frame 1 4-2. Sensor bracket 11 4-8 and sensor bracket 10 4-9 are installed on the upper surface of frame 1 4-2. The receiver and transmitter of through-beam sensor 4-7 are installed on sensor bracket 11 4-8 and sensor bracket 10 4-9 respectively. Support block 3 4-10 and support block 4-11 are installed on the upper surface of frame 1 4-2. Sensor bracket 13 4-14 and sensor bracket 12 4-15 are installed on the upper surface of frame 1 4-2. Sensor 10 4-13 is installed on sensor bracket 13 4-14. Sensor 11 4-12 is installed on sensor bracket 12 4-15. Through-beam sensor 4-7 is used to detect workpiece 1, sensor 11 4-12 is used to detect large value standard part 7, and sensor 11 4-13 is used to detect small value standard part 6.

[0083] Lifting unit 3 includes frame 2 3-1, lifting platform 3-2, connecting seat 4 3-3, floating joint 2 3-4, cylinder mounting seat 2 3-5, lead screw 3-6, connecting seat 6 3-7, sensor bracket 15 3-8, sensor 13 3-9, pin 3-10, connecting seat 5 3-11, sensor 12 3-12, sensor bracket 14 3-13, self-locking cylinder 3-14, sheet metal parts 3-15, cable chain 3-16, coupling 2 3-17, and servo motor. 3-18. Cable chain sheet metal parts 3-19. Slide rail mounting base 3-20. Sensor bracket sixteen 3-12. Sensor fourteen 3-22. Sensor fifteen 3-23. Sensor bracket seventeen 3-24. Sensor sixteen 3-25. Sensor sensing bracket 3-26. Slide rail 3-27. Lead screw connecting base one 3-28. Slider 3-29. Lead screw nut mounting base 3-32. Lead screw nut 3-31. Lead screw connecting base two 3-30. Motor mounting base 3-33.

[0084] Install frame 2 3-1 onto base 5. Install slide rail mounting seat 3-20 onto frame 2 3-1. Install slide rail 3-27 onto slide rail mounting seat 3-20. Install motor mounting seat 3-33 onto slide rail mounting seat 3-20. Install lead screw connecting seat 1 3-28 onto motor mounting seat 3-33. Install lead screw nut 3-31 onto lead screw 3-6. Install lead screw nut mounting seat 3-32 onto lead screw nut 3-31. Fit lead screw 3-6 into lead screw connecting seat 1 3-28. Simultaneously, insert lead screw connecting seat 2 3-30 into the lower end of lead screw 3-6 and secure it with a snap ring. Also, install lead screw connecting seat 2 3... Install the -30 onto frame 2 3-1, install the slider 3-29 onto the slide rail 3-27, install the cable chain sheet metal part 3-19 onto frame 2 3-1, install cylinder mounting seat 2 3-5 onto both sides of frame 2 3-1, install the self-locking cylinder 3-14 onto cylinder mounting seat 2 3-5 respectively, then install the floating joint 2 3-4 onto the piston rod of the self-locking cylinder 3-14, install sheet metal part 3-15 onto the lifting platform 3-2, then install the lifting platform 3-2 onto the slider 3-29 and the lead screw nut mounting seat 3-32, then install the connecting seat 4 3-3 onto the lifting platform 3-2 and connect it to the floating joint 2 3-4, then connect... The coupling 2 (3-17) is installed onto the upper end of the lead screw (3-6). The servo motor 2 (3-18) is then installed onto the coupling 2 (3-17) and connected to the motor mounting base (3-33). The connecting base 6 (3-7) is installed onto the frame 2 (3-1). The connecting base 5 (3-11) is installed onto the frame 2 (3-1). The sensor bracket 15 (3-8) is installed onto the connecting base 6 (3-7). The sensor bracket 14 (3-13) is installed onto the connecting base 5 (3-11). The sensor 13 is installed onto the sensor bracket 15 (3-8). The sensor 12 (3-12) is installed onto the sensor bracket 14 (3-13). The pin 3-10 is inserted into the connecting base 5 (3-11). This can be used for maintenance. For safety during maintenance, cable chain 3-16 is installed onto sheet metal parts 3-15 and 3-19. Sensor brackets 16-3-12 and 17-3-24 are installed onto frame 2-1. Sensors 14-3-22 and 15-3-23 are installed onto sensor bracket 16-3-12, and sensor 16-3-25 is installed onto sensor bracket 17-3-24. Sensor bracket 3-26 is installed onto lifting platform 3-2. Sensors 14-3-22 and 16-3-25 provide alarms for the extreme positions of lifting platform 3-2, while sensor 15-3-23 indicates the initial position of lifting platform 3-2. In summary, self-locking cylinder 3-14 is used to balance the total weight of lifting platform 3-2 and the installed units, thus increasing the service life of lead screw 3-6 and reducing the torque and power of servo motor 2-3-18.

[0085] The large standard component 7 includes a base 7-1, a positioning sleeve 7-2, a buffer pad 3 7-3, a handle 7-4, a mating surface support block 7-5, a positioning pin 2 7-6, an input shaft standard block 7-7, an intermediate shaft standard block 7-8, an output shaft standard block 7-9, and a sensor plate 7-10.

[0086] Install two positioning sleeves 7-2 onto the lower end face of base 7-1, install four buffer pads 7-3 onto the lower end face of base 7-1, install the sensor plate 07-10 onto the lower end face of base 7-1, install two handles 7-4 onto both sides of base 7-1, install several mating surface support blocks 7-5 onto the upper end face of base 7-1, install the input shaft standard block 7-7, intermediate shaft standard block 7-8, and output shaft standard block 7-9 onto the upper end face of base 7-1, and install two positioning pins 7-6 onto the upper end face of base 7-1. The large-value standard component 7 is used to verify the stability, accuracy, repeatability, and reproducibility of the equipment; the small-value standard component 6 is installed in the same way as the large-value standard component 7, and is used for measurement reference, workpiece 1 measurement calculation, equipment verification, and other functions.

[0087] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0088] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", "pad", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A high dynamic measurement device for an electrically driven shaft, used for measuring a workpiece (1), characterized in that: It includes a measuring unit (2), a lifting unit (3), a placement platform (4), a base (5), a small value standard part (6), and a large value standard part (7). The measuring unit (2), lifting unit (3), placement platform (4), small value standard part (6), and large value standard part (7) are all located above the base (5). The measuring unit (2) includes a clamping assembly (2-1), a support floating assembly (2-2), an input shaft ball bearing outer end face measuring assembly (2-3), an intermediate shaft tapered bearing outer end face measuring assembly (2-4), an output shaft tapered bearing outer end face measuring assembly (2-5), a support floating fixing assembly (2-6), and a floating mechanism (2-7).

2. The high dynamic measurement device for electric drive shafts according to claim 1, characterized in that: The supporting floating assembly (2-2) includes a support block one (2-201), a positioning pin sleeve one (2-202), a positioning pin sleeve two (2-203), a probe one (2-204), a measuring fixing plate (2-205), a floating plate (2-206), an adjusting block one (2-207), a pin sleeve one (2-208), a pin sleeve two (2-209), a support base one (2-210), and a measuring mounting base (2-211). The upper end face of the support block 1 (2-201) is in contact with the workpiece (1). The lower end face of the support block 1 (2-201) is installed on the upper end face of the floating plate (2-206). The support block 1 (2-201) is fixed with positioning pin sleeve 1 (2-202) and positioning pin sleeve 2 (2-203) by set screws. The support block 1 (2-201) is respectively installed with probe 1 (2-204). The lower end face of the measuring fixing plate (2-205) is installed with pin sleeve 1 (2-208) and pin sleeve 2 (2-209). The floating plate (2-206) and the measuring fixing plate (2-205) are connected by a floating mechanism (2-7). The lower end face of the support seat 1 (2-210) is installed on the upper end face of the floating plate (2-206). The lower end face of the measuring mounting seat (2-211) is installed on the upper end face of the support seat 1 (2-210).

3. The high dynamic measurement device for electric drive shafts according to claim 2, characterized in that: The clamping assembly (2-1) includes a multiplier cylinder (2-101), a connecting seat one (2-102), a cylinder mounting seat one (2-103), a pressure block (2-106), a connecting rod two (2-107), a pull rod (2-108), a connecting rod three (2-109), a connecting rod one (2-110), a rotating shaft two (2-111), a rotating shaft one (2-112), and a rotating shaft three (2-113). The lower end face of the first connecting seat (2-102) is installed on the upper end face of the floating plate (2-206), one on each side. The lower end face of the first cylinder mounting seat (2-103) is installed on the upper end faces of the two first connecting seats (2-102). The upper end face of the multiplier cylinder (2-101) is installed on the lower end face of the first cylinder mounting seat (2-103). The lower end face of the pull rod (2-108) is installed on the piston rod end face of the multiplier cylinder (2-101). The two second connecting rods (2-107) on the left and right sides are connected by a rotating shaft (3). 2-113) is connected to the left and right ends of the pull rod (2-108). Another shaft three (2-113) connects the pressure block (2-106) to the connecting rod two (2-107). The two connecting rods one (2-110) on the left and right are connected to the pressure block (2-106) and the left and right sides of the cylinder mounting seat one (2-103) respectively through two shafts two (2-111). The two connecting rods three (2-109) on the left and right are connected to the sides of the two connecting rods one (2-110) on the left and right through shaft one (2-112).

4. The high dynamic measurement device for an electric drive shaft according to claim 3, characterized in that: The floating mechanism (2-7) includes a floating fixed plate (2-701), a thrust bearing one (2-702), a connecting plate one (2-703), a connecting plate two (2-704), a thrust bearing two (2-705), a bushing one (2-706), a disc spring (2-707), a connecting plate three (2-708), a floating shaft (2-709), and bolts (2-710). The lower end face of the floating fixed plate (2-701) Placed on the upper surface of the measuring fixing plate (2-205), the upper cover plate of the thrust bearing one (2-702) is reversed and placed on the upper surface of the floating fixing plate (2-701). The lower surface of the connecting plate one (2-703) is connected to the reversed cover plate of the thrust bearing one (2-702). The upper surface of the connecting plate one (2-703) is connected to the lower surface of the floating plate (2-206). The lower surface of the connecting plate two (2-704) is placed... The thrust bearing (2-206) is placed on the upper surface of the floating plate (2-206). The lower end cover of the second thrust bearing (2-705) is reversed and connected to the upper surface of the second connecting plate (2-704). The floating shaft (2-709) is sequentially inserted into the holes of the second thrust bearing (2-705), the second connecting plate (2-704), the floating plate (2-206), the first connecting plate (2-703), the first thrust bearing (2-702), and the floating fixed plate (2-701). The bushing (2-706) is fitted into the floating shaft (2-709), the disc spring (2-707) is fitted into the shaft diameter of the floating shaft (2-709) and contacts the upper end face of the bushing (2-706), the lower end face of the connecting plate (2-708) contacts the disc spring (2-707), and the bolt (2-710) passes through the inner hole of the floating shaft (2-709) and is locked with the measuring fixing plate (2-205).

5. The high dynamic measurement device for an electric drive shaft according to claim 4, characterized in that: The input shaft ball bearing outer end face measuring assembly (2-3) includes a bearing sleeve (2-301), a clamping block one (2-302), a connecting block one (2-303), a probe two (2-304), an L-connecting block (2-305), a sleeve one (2-306), a counterweight floating shaft one (2-307), a counterweight connecting plate one (2-308), a counterweight block one (2-309), a buffer pad one (2-310), a fixed shaft one (2-311), a floating shaft one (2-312), a linear bearing one (2-313), a bushing two (2-314), a limiting shaft one (2-315), a linear bearing two (2-316), and a retaining ring one (2-317). The clamping block one (2-302) and the connecting block one (2-303) are connected by the fixed shaft one (2-311). The semi-circular boss of the clamping block one (2-302) contacts the semi-circular groove of the connecting block one (2-303). The bearing sleeve (2-301) is connected to the connecting block one (2-303) by a set screw. The lower end face of the sleeve one (2-306) is installed on the upper end face of the measuring mounting base (2-211). The linear bearing one (2-313), the bushing two (2-314), and the linear bearing two (2-316) are installed into the hole of the sleeve one (2-306) and secured by the snap ring one (2-317). Insert sleeve one (2-306), the buffer pad one (2-310) is installed on the upper end face of sleeve one (2-306), the floating shaft one (2-312) and the connecting block one (2-303) are fixed by the fixed shaft two (2-318), the floating shaft one (2-312) passes through the inner hole of linear bearing one (2-313), bushing two (2-314), linear bearing two (2-316) and buffer pad one (2-310) in sequence, the lower end face of the counterweight connecting plate one (2-308) is fixed to the upper end face of the floating shaft one (2-312), the counterweight floating shaft one (2-307) is connected to the counterweight connecting plate one (2-308), the counterweight block one ( 2-309) is loaded onto the upper surface of the counterweight connecting plate (2-308). The L connecting block (2-305) is installed on the three mounting surfaces of the sleeve (2-306). The probe (2-304) is fixed to the L connecting block (2-305). The probe of the probe (2-304) is in contact with the clamping block (2-302). The limiting shaft (2-315) passes through the floating shaft (2-312), the bushing (2-314), and the sleeve (2-306) to limit the floating range. The outer end face measuring assembly (2-3) of the input shaft ball bearing and the outer end face measuring assembly (2-4) of the intermediate shaft tapered bearing have the same structure.

6. The high dynamic measurement device for electric drive shafts according to claim 5, characterized in that: The output shaft taper bearing outer end face measuring assembly (2-5) comprises a shift fork (2-501), a quick-change shaft (2-502), a floating rotary shaft (2-503), a pressing block two (2-504), a spring one (2-509), an adjusting bolt (2-510), a limiting bolt (2-511), a probe connecting plate, a probe three (2-508), a connecting plate four (2-514), a counterweight floating shaft two (2-515), a counterweight linear bearing (2-517), a buffer pad two (2-518), a counterweight support shaft (2-519), a speed reducer mounting seat (2-520), a speed reducer (2-521), a servo motor one (2-522), a counterweight block (2-523), a floating connecting sleeve (2-512), a counterweight connecting sleeve (2-513), a support shaft (2-526), a detection ring (2-538), a linear bearing three (2-554), a connecting bolt one (2-539), a pressing block three (2-540), a floating shaft two (2-541), a connecting plate five (2-542), a deep groove ball bearing one (2-543), a flat key (2-544), a sleeve two (2-545), a sleeve three (2-546), a deep groove ball bearing two (2-547), a spring two (2-548), a connecting seat two (2-549), a connecting seat three (2-550), a shaft coupling one (2-551), a bushing one (2-552), a mounting seat (2-553), a bushing two (2-555), a sleeve four (2-556), a counterweight connecting plate two (2-557), a floating sleeve (2-558) and a connecting bolt two (2-559), the shift fork (2-501) is connected with the quick-change shaft (2-502) and the floating rotary shaft (2-503) through the connecting bolt one (2-539), the detection ring (2-538) is mounted on the floating rotary shaft (2-503), the bushing two (2-555) is sleeved in the sleeve four (2-556), the sleeve four (2-556) is mounted in the sleeve three (2-546), the two flat keys (2-544) are respectively sleeved in the clamping grooves on the two sides of the floating rotary shaft (2-503), the connecting plate five (2-542) is mounted on the mounting seat (2-553) and is used for positioning the deep groove ball bearing one (2-543), the probe connecting plate is mounted on the floating plate (2-206), the probe three (2-508) is mounted on the probe connecting plate, the counterweight floating shaft one (2-307) penetrates out of the linear bearing three (2-554), the bushing one (2-552) is sleeved in the connecting seat two (2-549), the connecting seat two (2-549) is connected with the sleeve three (2-546), the deep groove ball bearing two (2-547) and the deep groove ball bearing one (2-543) are respectively mounted into the mounting holes in the upper end face and the lower end face of the mounting seat (2-553), the sleeve three (2-546) is sleeved into the inner diameters of the deep groove ball bearing one (2-543) and the deep groove ball bearing two (2-547),The floating rotating shaft (2-503) is installed inside the sleeve three (2-546), the two flat keys (2-544) are fitted into the grooves inside the sleeve three (2-546), the bushing two (2-555) is installed from the lower end of the floating rotating shaft (2-503), the sleeve four (2-556) is fixed to the sleeve three (2-546), the sleeve two (2-545) is installed from the upper end of the floating rotating shaft (2-503), the spring two (2-548) is installed from the upper end of the floating rotating shaft (2-503), the bushing one (2-552) is installed from the upper end of the floating rotating shaft (2-503), the connecting seat two (2-549) is fixed to the sleeve three (2-546), and the mounting seat (2-55) is fixed to the sleeve three (2-546). 3) Installed onto the upper surface of the measuring mounting base (2-211), the connecting seat three (2-550) is connected to the connecting seat two (2-549), the coupling one (2-551) is connected to the shaft on the connecting seat three (2-550), the lower end face of the support shaft (2-526) is installed onto the upper surface of the measuring mounting base (2-211), the lower end face of the reducer mounting base (2-520) is installed onto the upper end face of the support shaft (2-526), ​​the support shaft (2-526) is installed on the measuring mounting base (2-211), the reducer (2-521) is installed inside the coupling one (2-551) and connected to the upper end face of the reducer mounting base (2-520), and the servo motor one (2-522)... Installed on the reducer (2-521), the second sleeve (2-545) passes through the third sleeve (2-546) and is used to limit the shift fork (2-501). The mounting surface of the counterweight linear bearing (2-517) is connected to the upper end face of the measuring mounting base (2-211). The upper end face of the second counterweight floating shaft (2-515) is installed on the lower end face of the second counterweight connecting plate (2-557). The lower end of the second counterweight floating shaft (2-515) is fitted with the second buffer pad (2-518). The second counterweight floating shaft (2-515) is installed into the counterweight linear bearing (2-517). The upper end face of the fourth connecting plate (2-514) is installed on the lower end face of the second counterweight floating shaft (2-515). The counterweight support shaft (2-519) The lower end face is installed on the upper end face of the counterweight connecting plate two (2-557). The counterweight block (2-523) is loaded onto the upper end face of the counterweight support shaft (2-519). The floating connecting sleeve (2-512) is connected to the clamping block three (2-540) by a set screw. The floating shaft two (2-541) is installed on the counterweight connecting sleeve (2-513) by a set screw. The counterweight connecting sleeve (2-513) and the floating connecting sleeve (2-512) are connected by a limit bolt (2-511). The clamping block two (2-504) is installed on the floating sleeve (2-558). The floating sleeve (2-558) and the floating connecting sleeve (2-512) are connected by a connecting bolt two (2-559).The first spring (2-509) is installed on the upper end face of the floating sleeve (2-558), and the first spring (2-509) is connected to the floating connecting sleeve (2-512) by an adjusting bolt (2-510).

7. The high dynamic measurement device for an electric drive shaft according to claim 6, characterized in that: The supporting floating fixing assembly (2-6) includes a positioning pin one (2-601), a sleeve seat (2-602), a cylinder (2-603), a sensing block (2-606), a limiting bolt one (2-607), a bushing (2-608), a floating joint one (2-609), and a limiting bolt two (2-610). The two bushings (2-608) are respectively installed into both ends of the sleeve seat (2-602). The floating joint one (2-609) is connected to the piston rod of the cylinder (2-603). The positioning pin one (2-607) is... -601) is connected to floating joint one (2-609) and inserted into the inner holes of two bushings (2-608). The cylinder (2-603) is installed on the upper end face of the sleeve seat (2-602). The limiting bolt one (2-607) and the limiting bolt two (2-610) are respectively installed on the upper and lower sides of the sleeve seat (2-602). The sensing block (2-606) is installed on the upper end of the piston rod of the cylinder (2-603). The lower end face of the sleeve seat (2-602) is installed on the floating plate (2-206).

8. The high dynamic measurement device for an electric drive shaft according to claim 7, characterized in that: The placement platform (4) includes an adjustment block 2 (4-1), a frame 1 (4-2), a support column (4-3), a support block 2 (4-4), a rhombus positioning pin (4-5), a circular positioning pin (4-6), a support block 3 (4-10), and a support block 4 (4-11). The adjustment block 2 (4-1) and the frame 1 (4-2) are installed on the base (5). The lower end of the support column (4-3) is installed on the upper surface of the frame 1 (4-2). The lower end of the support block 2 (4-4) is installed on the upper surface of the support column (4-3). The lower end of the rhombus positioning pin (4-5) and the circular positioning pin (4-6) are installed on the upper surface of the frame 1 (4-2). The support block 3 (4-10) and the support block 4 (4-11) are installed on the upper surface of the frame 1 (4-2).

9. The high dynamic measurement device for an electric drive shaft according to claim 8, characterized in that: The lifting unit (3) includes a frame two (3-1), a lifting platform (3-2), a connecting seat four (3-3), a floating joint two (3-4), a cylinder mounting seat two (3-5), a lead screw (3-6), a connecting seat six (3-7), a pin (3-10), a connecting seat five (3-11), a self-locking cylinder (3-14), sheet metal parts (3-15), a cable chain (3-16), a coupling two (3-17), a servo motor two (3-18), cable chain sheet metal parts (3-19), a slide rail mounting seat (3-20), a slide rail (3-27), a lead screw connecting seat one (3-28), a slider (3-29), a lead screw nut mounting seat (3-32), a lead screw nut (3-31), a lead screw connecting seat two (3-30), and Motor mounting base (3-33), frame two (3-1) is mounted on base (5), slide rail mounting base (3-20) is mounted on frame two (3-1), slide rail (3-27) is mounted on slide rail mounting base (3-20), motor mounting base (3-33) is mounted on slide rail mounting base (3-20), lead screw connecting seat one (3-28) is mounted on motor mounting base (3-33), measuring fixing plate (2-205) and adjusting block one (2-207) are mounted on the upper surface of lifting platform (3-2), lead screw (3-6) is fitted into lead screw connecting seat one (3-28), lead screw nut (3-31) is mounted on lead screw (3-6), lead screw nut mounting base (3-28) is mounted on base (5). -32) Installed onto the lead screw nut (3-31), the lead screw connecting seat two (3-30) is installed into the lower end of the lead screw (3-6) and fixed by a snap ring, the lead screw connecting seat two (3-30) is installed onto the frame two (3-1), the slider (3-29) is installed onto the slide rail (3-27), the drag chain sheet metal part (3-19) is installed onto the frame two (3-1), the cylinder mounting seat two (3-5) is installed on both sides of the frame two (3-1), the self-locking cylinders (3-14) are respectively installed onto the cylinder mounting seat two (3-5), the floating joint two (3-4) is installed onto the piston rod of the self-locking cylinder (3-14), the sheet metal part (3-15) is installed onto the lifting platform (3-2), the lifting platform (3- 2) Installed onto the slider (3-29) and the lead screw nut mounting base (3-32), the fourth connecting seat (3-3) is installed onto the lifting platform (3-2) and connected to the second floating joint (3-4), the second coupling (3-17) is installed onto the upper end of the lead screw (3-6), the second servo motor (3-18) is installed onto the second coupling (3-17) and connected to the motor mounting base (3-33), the sixth connecting seat (3-7) is installed onto the second frame (3-1), the fifth connecting seat (3-11) is installed onto the second frame (3-1), the pin (3-10) is placed into the fifth connecting seat (3-11), and the drag chain (3-16) is installed onto the sheet metal part (3-15) and the drag chain sheet metal part (3-19).

10. The high dynamic measurement device for an electric drive shaft according to claim 9, characterized in that: The large-value standard component (7) includes a base (7-1), positioning sleeves (7-2), buffer pad three (7-3), handle (7-4), mating surface support block (7-5), positioning pin two (7-6), input shaft standard block (7-7), intermediate shaft standard block (7-8), output shaft standard block (7-9), and sensor plate (7-10). Two positioning sleeves (7-2) are installed on the lower end face of the base (7-1), and the buffer pad three (7-3) is installed on the lower end face of the base (7-1). The sensor... The induction plate (7-10) is installed on the lower end face of the base (7-1), the handle (7-4) is installed on both sides of the base (7-1), the mating surface support block (7-5) is installed on the upper end face of the base (7-1), the input shaft standard block (7-7), the intermediate shaft standard block (7-8) and the output shaft standard block (7-9) are installed on the upper end face of the base (7-1), the positioning pin (7-6) is installed on the upper end face of the base (7-1), and the small value standard part (6) and the large value standard part (7) have the same structure.

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