A wire gear precision detection device and detection method

Abstract

The present application relates to a kind of wire gear precision detection device and detection method, detection device includes horizontal rotary table;Horizontal rotary table is equipped with the clamping device for clamping gear, clamping device is connected with driving device, and driving device is used to drive gear circumferential rotation;Horizontal rotary table side is correspondingly equipped with three-dimensional workstation, and three-dimensional workstation is equipped with detection component, and detection component is used to abut on gear to carry out parameter detection.The present application is by setting clamping device on horizontal rotary table, utilizes clamping device to hold wire gear, utilizes horizontal rotary table to drive clamping device and wire gear circumferential rotation, again cooperation installs detection component on three-dimensional workstation and carries out height and position adjustment, can detect each part of wire gear, realizes the precision detection of different wire gear design configuration.

Description

Technical Field

[0001] This invention relates to the field of gear precision testing technology, specifically to a linear gear precision testing device and testing method. Background Technology

[0002] Gears are one of the most important basic components in manufacturing. With the continuous development of manufacturing, gears have become more diverse in type and have a wider range of applications, placing higher demands on gear manufacturing precision. Gear machining precision testing technology can be used to evaluate gear machining accuracy and is the most critical link in achieving closed-loop manufacturing.

[0003] Linear gears are a new type of gear based on the spatial conjugate curve meshing theory. They feature flexible design, high transmission efficiency, large transmission ratio, and the ability to transmit between arbitrary axes. They are suitable for mechanical transmission devices in small spaces and low-to-medium power scenarios, such as instruments, packaging machinery, toys, and miniature robots. Currently, the related theories and processing methods for linear gears are becoming increasingly sophisticated, and various configurations have been designed and applied, mainly including cylindrical linear gears, bevel linear gears, and planar linear gears. Multiple tooth profile configurations have also been proposed and applied in tooth profile design. Therefore, requirements are placed on linear gear testing technologies and equipment.

[0004] Existing technology discloses a linear gear machining accuracy testing station, which includes a clamping device for holding the linear gear and a detection sensor. The station uses a servo motor to control the relative position between the detection sensor and the gear being tested, and acquires data through the detection sensor to achieve continuous detection of the linear gear. This testing station is designed based on relevant linear gear theory and can meet the detection requirements of linear gears. The equipment is easy to operate, low in cost, and has high detection efficiency. However, it is mainly developed for plastic parallel-axis gears, and the clamping device has a fixed position, making it unsuitable for other design configurations of linear gears. Therefore, it is necessary to design a testing device that can meet the accuracy detection requirements of various existing linear gear design configurations. Summary of the Invention

[0005] To address the problems existing in the prior art, one of the objectives of this invention is to provide a linear gear precision testing device that is easy to operate and can meet the precision testing requirements of different linear gear design configurations.

[0006] The second objective of this invention is to provide a method for detecting the accuracy of linear gears.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A linear gear precision testing device includes a horizontal turntable;

[0009] The horizontal rotating table is provided with a clamping device for clamping the gear, and the clamping device is connected with a driving device for driving the gear to rotate circumferentially.

[0010] A three-dimensional workbench is arranged on one side of the horizontal rotating table, and a detection assembly is arranged on the three-dimensional workbench, and the detection assembly is used for abutting against the gear to detect parameters.

[0011] Further, a supporting seat is arranged below the horizontal rotating table, and the supporting seat is fixedly connected with a base connecting plate, and the base connecting plate is connected with the three-dimensional workbench.

[0012] Further, the horizontal rotating table is a cross-rail structure rotating table.

[0013] Further, the clamping device comprises a main clamp and an auxiliary support clamp arranged oppositely, the main clamp is arranged on one side of the horizontal rotating table and is used for clamping one end of the gear, and the auxiliary support clamp is arranged on the other side of the horizontal rotating table and is used for clamping the other end of the gear.

[0014] Further, the auxiliary support clamp comprises an adjustable plate and a height adjusting assembly, the adjustable plate is fixedly connected with the horizontal rotating table, and the main clamp and the height adjusting assembly are both mounted on the adjustable plate, and the height adjusting assembly is used for clamping the other end of the gear.

[0015] Further, the height adjusting assembly comprises a supporting block, a supporting bearing seat and an adjusting bolt, the supporting block is fixedly connected with the adjustable plate, the supporting bearing seat is arranged above the supporting block and is used for clamping the other end of the gear, and the supporting bearing seat is locked with the supporting block through the adjusting bolt.

[0016] Further, a gasket is arranged between the top of the supporting block and the bottom of the supporting bearing seat, and a bolt fixing hole is arranged in the middle of the top of the supporting block and is used for being connected with the adjusting bolt.

[0017] Further, the gasket is arranged on both sides of the bolt fixing hole, and the heights of the gaskets on both sides are the same or different.

[0018] Further, the distance between the center line of the adjusting bolt and the axis of the supporting bearing seat is greater than the distance between the gasket and the center line of the adjusting bolt.

[0019] Further, the clamping device further comprises a gear clamping rod fixedly arranged in the gear shaft hole, the main clamp clamps one end of the gear clamping rod, and the supporting bearing seat is provided with a fixing hole for fixing the other end of the gear clamping rod.

[0020] Further, the adjustable plate is provided with a support plate, one end of the adjustable plate is fixedly connected with the support plate, the other end is provided with adjusting notches on both sides, the adjusting notches on both sides are respectively provided with a first fine adjustment micrometer head and a second fine adjustment micrometer head, the first fine adjustment micrometer head and the second fine adjustment micrometer head are used for locking the adjustable plate, and the first fine adjustment micrometer head and the second fine adjustment micrometer head are symmetrically fixedly installed on the support plate through a first fine adjustment head clamp and a second fine adjustment head clamp.

[0021] Further, the main clamp is provided with a clamping mechanism and an upper top mechanism, the clamping mechanism comprises a clamping base, a clamping handle, a first roller, a second roller, an upper top roller, a pressing rod, an adjusting knob and a main shaft, the clamping handle, the first roller, the second roller, the adjusting knob and the upper top mechanism are installed on the clamping base, the middle part of the pressing rod is connected with the clamping handle, the adjusting knob is used for adjusting the tightness of the pressing rod, the first roller, the second roller and the upper top roller are used for clamping a fixed gear rod, one end of the main shaft is connected with the second roller, and the other end is connected with a driving device through a shaft coupling.

[0022] Further, the upper top mechanism comprises an upper top block, an upper top screw, an upper top roller adjusting screw, a pressing rod adjusting screw and an adjusting fixed screw, the upper top mechanism is connected with the clamping base through the upper top block, the upper top block is installed with the upper top screw and the adjusting fixed screw, the lower part of the upper top screw is correspondingly provided with the upper top roller adjusting screw installed on the pressing rod, and the lower part of the adjusting fixed screw is correspondingly provided with the pressing rod adjusting screw.

[0023] Further, the driving device is a third servo motor, the driving device is fixedly installed on the adjustable plate through a third motor support, the driving device drives the main shaft and the second roller to rotate, so as to drive the gear clamping rod abutting against the second roller to rotate, one end of the gear clamping rod is clamped between the first roller, the second roller and the upper top roller, the other end is fixedly arranged in the fixed hole, and the gear clamping rod is used for fixing the measured gear.

[0024] Further, the three-dimensional workbench comprises a Z-axis lifting table for adjusting the height of the detection assembly, a Y-axis displacement table and an X-axis displacement table arranged perpendicularly to the Y-axis displacement table, the X-axis displacement table is installed on the three-dimensional workbench, the Y-axis displacement table is installed on the X-axis displacement table, and the Z-axis lifting table is installed on the Y-axis displacement table.

[0025] Further, the X-axis displacement table comprises a first grating ruler, a first screw rod movement sliding group and a first servo motor, the first grating ruler is arranged on one side of the first screw rod movement sliding group, the first servo motor is fixed on the first screw rod movement sliding group through a first motor support, and the first servo motor is connected with a screw rod of the first screw rod movement sliding group through a coupling; the Y-axis displacement table comprises a second grating ruler, a second screw rod movement sliding group and a second servo motor, the second grating ruler is arranged on one side of the second screw rod movement sliding group, the second servo motor is fixed on the second screw rod movement sliding group through a second motor support, and the second servo motor is connected with a screw rod of the second screw rod movement sliding group through a coupling; the first servo motor and the second servo motor convert rotation into linear motion through a screw nut, the screw nut is located in the middle of the sliding rail, and the X-axis and the Y-axis are driven to move through the screw nut respectively; the first grating ruler and the second grating ruler form closed-loop control with the first servo motor and the second servo motor respectively, so that accurate positioning is realized.

[0026] Further, the guide rails of the X-axis displacement table and the Y-axis displacement table adopt cross roller guide rails, and the cross roller guide rails can improve the accuracy of guide rail movement.

[0027] Further, the Z-axis lifting table comprises a base plate, a table body, a thousandth knob, a thousandth scale, a fixed knob and an upper platform, the base plate is connected with the Y-axis displacement table, the table body comprises an internal guide rail and an outer shell, the internal guide rail is fixedly connected with the upper platform, and the table body is further provided with the thousandth knob, the thousandth scale and the fixed knob; the thousandth knob is used for adjusting the height of the Z-axis lifting table, the height data of the Z-axis is read through the thousandth scale, and the fixed knob is used for fixing the height of the Z-axis to avoid changing the pre-adjusted height by mistake.

[0028] Further, the detection assembly comprises an adapter plate, a detection sensor, an adapter and a measuring head, the adapter plate is fixedly connected with the upper platform of the Z-axis lifting table, the detection sensor is fixedly connected with the adapter plate, the adapter is installed on the detection sensor, and the measuring head is fixedly installed on the adapter.

[0029] A linear gear precision detection method adopts the linear gear precision detection device, and comprises the following steps.

[0030] The gear is clamped by using the clamping device;

[0031] The clamping device is rotated by using the horizontal turntable, and the gear is driven to rotate circumferentially by the driving device, so that different parts of the gear face the three-dimensional workbench;

[0032] The three-dimensional workbench is adjusted to adjust the height and position of the detection assembly, so that the detection assembly abuts against the gear to detect parameters.

[0033] Further, the different height spacers are respectively arranged on both sides of the bolt fixing hole on the top of the support block, the upper and lower ends of the spacers are respectively abutted against the lower end of the support bearing seat and the upper end of the support block, the distance between the center line of the adjusting bolt and the shaft center of the support bearing seat is greater than the distance between the center line of the adjusting bolt and the spacer, the height change of the support bearing seat is enlarged by the spacers on both sides of the bolt fixing hole, the height of the support bearing seat is quickly adjusted to be flush with the main clamp, and then the support bearing seat and the support block are locked by the adjusting bolt, so that the height adjustment efficiency of the support bearing seat is improved.

[0034] In general, the present application has the following advantages: the present application sets the clamping device on the horizontal rotary table, clamps the wire gear by the clamping device, drives the clamping device and the wire gear to rotate circumferentially by the horizontal rotary table, and adjusts the height and position by cooperating with the detection assembly installed on the three-dimensional workbench, so that each part of the wire gear can be detected, and the precision detection of different wire gear design configurations can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present application;

[0036] Figure 2 It is a structural schematic diagram of the horizontal rotary table, the auxiliary support clamp and the main clamp;

[0037] Figure 3 It is a structural schematic diagram of the adjustable plate;

[0038] Figure 4 It is a structural schematic diagram of the clamping mechanism and the upper top mechanism;

[0039] Figure 5 It is a structural schematic diagram of the X-axis displacement table and the Y-axis displacement table;

[0040] Figure 6 It is a structural schematic diagram of the first screw rod movement sliding group;

[0041] Figure 7 It is a structural schematic diagram of the detection assembly and the Z-axis lifting table;

[0042] Figure 8 It is a structural model of the support bearing seat and the support block connection Figure 1 ;

[0043] Figure 9 It is a structural model of the support bearing seat and the support block connection Figure 2 .

[0044] The drawings include:

[0045] 10-Detection component; 101-Adapter plate; 102-Detection sensor; 103-Adapter; 104-Probe; 20-Z-axis lifting stage; 201-Base plate; 202-Stage body; 2021-Internal guide rail; 2022-Outer shell; 203-Micrometer scale; 204-Micrometer knob; 205-Upper platform; 30-Y-axis displacement stage; 302-Second grating ruler; 303-Second motor support; 304-Second lead screw motion slide; 305-The Two servo motors; 40-X-axis displacement stage; 402-First grating ruler; 404-First lead screw motion slide block; 4041-Base plate; 4042-Side plate; 4043-Bearing seat; 4044-Lead screw; 4045-Slide rail; 4046-Slider; 4047-Lead screw nut; 4048-Nut seat; 405-First servo motor; 5-Three-dimensional worktable; 601-Base connecting plate; 602-Support seat; 603-Horizontal turntable; 70-Auxiliary Support clamp; 701-Support plate; 702-Adjustable plate; 703-First fine-tuning head clamp; 704-First fine-tuning micrometer head; 705-Second fine-tuning head clamp; 706-Second fine-tuning micrometer head; 707-Height adjustment assembly; 7071-Support block; 7072-Shim; 7073-Adjusting bolt; 708-Support bearing seat; 7081-Fixing hole; 80-Main clamp; 802-Clamping mechanism; 8021-Clamping base; 8022- Clamping handle; 8023-First roller; 8024-Second roller; 8025-Upper roller; 8026-Pressure rod; 8027-Adjusting knob; 8028-Main shaft; 803-Upper lifting mechanism; 8031-Upper lifting block; 8032-Upper lifting screw; 8033-Upper roller adjusting screw; 8034-Adjusting fixing screw; 8035-Pressure rod adjusting screw; 804-Third motor support; 805-Third servo motor; 90-Gear clamping bar. Detailed Implementation

[0046] The present invention will now be described in further detail.

[0047] like Figures 1-3 As shown, a linear gear precision testing device includes a horizontal turntable 603;

[0048] The horizontal turntable 603 is equipped with a clamping device for clamping gears. The clamping device is connected to a drive device, which is used to drive the gears to rotate circumferentially.

[0049] A three-dimensional worktable 5 is provided on one side of the horizontal turntable 603. A detection component 10 is provided on the three-dimensional worktable 5. The detection component 10 is used to abut against the gear to perform parameter detection.

[0050] The horizontal rotary table 603 is provided below with a support seat 602, which is fixedly connected with the base connecting plate 601, the base connecting plate 601 is connected with the three-dimensional worktable 5, the horizontal rotary table 603 is a cross rail structure rotary table. The clamping device includes oppositely arranged main clamps 80 and auxiliary support clamps 70, the main clamps 80 are arranged on one side of the horizontal rotary table 603 and are used for clamping one end of the gear, and the auxiliary support clamps 70 are arranged on the other side of the horizontal rotary table 603 and are used for clamping the other end of the gear. The auxiliary support clamps 70 include an adjustable plate 702 and a height adjusting assembly 707, the adjustable plate 702 is fixedly connected with the horizontal rotary table 603, the main clamps 80 and the height adjusting assembly 707 are both mounted on the adjustable plate 702, and the height adjusting assembly 707 is used for clamping the other end of the gear. The height adjusting assembly 707 includes a support block 7071, a support bearing seat 708 and an adjusting bolt 7073, the support block 7071 is fixedly connected with the adjustable plate 702, the support bearing seat 708 is arranged above the support block 7071 and is used for clamping the other end of the gear, and the support bearing seat 708 is lockedly connected with the support block 7071 through the adjusting bolt 7073. A gasket 7072 is arranged between the top of the support block 7071 and the bottom of the support bearing seat 708, a bolt fixing hole is arranged in the middle of the top of the support block 7071 and is used for being connected with the adjusting bolt 7073. The gasket 7072 is arranged on both sides of the bolt fixing hole, and the heights of the gaskets 7072 on both sides are the same or different. The distance between the center line of the adjusting bolt 7073 and the axis of the support bearing seat 708 is greater than the distance between the center line of the adjusting bolt 7073 and the gasket 7072. The clamping device further includes a gear clamping rod 90 fixedly arranged in a gear shaft hole, the main clamps 80 clamp one end of the gear clamping rod 90, and the support bearing seat 708 is provided with a fixing hole 7081 used for fixing the other end of the gear clamping rod 90.

[0051] The bottom of the adjustable plate 702 is provided with a support plate 701, one end of the adjustable plate 702 is fixedly connected with the support plate 701, the other end is provided with adjusting notches on both sides, first and second fine adjustment micrometers 704 and 706 are arranged on both sides of the adjusting notches respectively, the first and second fine adjustment micrometers 704 and 706 are used for locking the adjustable plate 702, the first and second fine adjustment micrometers 704 and 706 are symmetrically fixedly installed on the support plate 701 through first and second fine adjustment micrometer clamps 703 and 705 respectively, the rotary radius of the adjustable plate 702 is 170 mm, and the minimum division of the first and second fine adjustment micrometers 704 and 706 is 0.01 mm.

[0052] As Figure 4As shown, the main clamp 80 is provided with a clamping mechanism 802 and an upper top mechanism 803. The clamping mechanism 802 comprises a clamping base 8021, a clamping handle 8022, a first roller 8023, a second roller 8024, an upper top roller 8025, a pressing rod 8026, an adjusting knob 8027 and a main shaft 8028. The clamping handle 8022, the first roller 8023, the second roller 8024, the adjusting knob 8027 and the upper top mechanism 803 are installed on the clamping base 8021. The middle part of the pressing rod 8026 is connected with the clamping handle 8022. The adjusting knob 8027 is used for adjusting the tightness of the pressing rod 8026. The first roller 8023, the second roller 8024 and the upper top roller 8025 are used for clamping the fixed gear clamping rod 90. One end of the main shaft 8028 is connected with the second roller 8024. The other end is connected with the driving device through a shaft coupling. The upper top mechanism 803 comprises an upper top block 8031, an upper top screw 8032, an upper top roller adjusting screw 8033, a pressing rod adjusting screw 8035 and an adjusting fixed screw 8034. The upper top mechanism 803 is connected with the clamping base 8021 through the upper top block 8031. The upper top block 8031 is installed with the upper top screw 8032 and the adjusting fixed screw 8034. The lower part of the upper top screw 8032 is correspondingly provided with the upper top roller adjusting screw 8033 installed on the pressing rod 8026. The lower part of the adjusting fixed screw 8034 is correspondingly provided with the pressing rod adjusting screw 8035.

[0053] As shown in Figure 2 and Figure 4 The driving device is a third servo motor 805. The driving device is fixedly installed on the adjustable plate 702 through a third motor support 804. The driving device drives the main shaft 8028 and the second roller 8024 to rotate, so as to drive the gear clamping rod 90 abutting against the second roller 8024 to rotate. One end of the gear clamping rod 90 is clamped between the first roller 8023, the second roller 8024 and the upper top roller 8025. The other end is fixedly arranged in the fixed hole 7081. The gear clamping rod 90 is used for fixing the measured gear.

[0054] As shown in Figure 1 The three-dimensional workbench 5 comprises a Z-axis lifting table 20 for adjusting the height of the detection assembly 10, a Y-axis displacement table 30 and an X-axis displacement table 40 arranged perpendicularly to the Y-axis displacement table 30. The X-axis displacement table 40 is installed on the three-dimensional workbench 5. The Y-axis displacement table 30 is installed on the X-axis displacement table 40. The Z-axis lifting table 20 is installed on the Y-axis displacement table 30.

[0055] As shown in Figure 5As shown, the X-axis displacement table 40 includes a first grating ruler 402, a first screw motion slide group 404, and a first servo motor 405. The first grating ruler 402 is arranged on one side of the first screw motion slide group 404, and the first servo motor 405 is fixed on the first screw motion slide group 404 through a first motor support. The first servo motor 405 is connected with a screw rod 4044 of the first screw motion slide group 404 through a coupling. The Y-axis displacement table 30 includes a second grating ruler 302, a second screw motion slide group 304, and a second servo motor 305. The second grating ruler 302 is arranged on one side of the second screw motion slide group 304, and the second servo motor 305 is fixed on the second screw motion slide group 304 through a second motor support 303. The second servo motor 305 is connected with the screw rod 4044 of the second screw motion slide group 304 through a coupling.

[0056] As shown in the figure, Figure 6 The first screw motion slide group 404 includes a bottom plate 4041, side plates 4042, bearing seats 4043, a screw rod 4044, slide rails 4045, and slide blocks 4046. The side plates 4042 are fixedly installed on the left and right ends of the bottom plate 4041. The inner sides of the side plates 4042 are provided with the bearing seats 4043. One side plate 4042 is provided with a first motor support on the outer side. The slide rails 4045 are installed on the upper and lower ends of the bottom plate 4041. The slide blocks 4046 are installed on the slide rails 4045 and slide along the extension direction of the slide rails 4045. The screw rod 4044 is arranged between the two slide rails 4045 and parallel to the slide rails 4045. The screw rod 4044 is provided with a screw nut 4047 and a nut seat 4048. The screw nut 4047 is fixedly connected with the nut seat 4048. The nut seat 4048 is connected with the slide block 4046 and drives the slide block 4046 to slide along the screw rod. The second screw motion slide group 304 has the same structure as the first screw motion slide group 404 and is arranged perpendicularly to the first screw motion slide group 404. The first servo motor 405 and the second servo motor 305 convert the rotation into linear motion through the screw nut 4047. The screw nut 4047 is located in the middle of the slide rail 4045 and drives the X-axis and Y-axis to move, respectively. The first grating ruler 402 and the second grating ruler 302 form a closed-loop control with the first servo motor 405 and the second servo motor 305, respectively, to realize precise positioning. The guide rails of the X-axis displacement table 40 and the Y-axis displacement table 30 adopt cross roller guide rails, which can improve the accuracy of guide rail movement.

[0057] As shown in the figure, Figure 7As shown, the Z-axis lifting platform 20 comprises a base plate 201, a platform body 202, a micrometer knob 204, a micrometer scale 203, a fixed knob and an upper platform 205, the base plate 201 is connected with the Y-axis displacement platform 30, the platform body 202 comprises an inner guide rail 2021 and an outer shell 2022, the inner guide rail 2021 is fixedly connected with the upper platform 205, the platform body 202 is further provided with the micrometer knob 204, the micrometer scale 203 and the fixed knob, the micrometer knob 204 is used for adjusting the height of the Z-axis lifting platform 20, the height data of the Z-axis is read through the micrometer scale 203, and the fixed knob is used for fixing the height of the Z-axis to avoid changing the pre-adjusted height by mistake.

[0058] The detection assembly 10 comprises an adapter plate 101, a detection sensor 102, an adapter head 103 and a measuring head 104, the adapter plate 101 is fixedly connected with the upper platform 205 of the Z-axis lifting platform 20, the detection sensor 102 is fixedly connected with the adapter plate 101, the adapter head 103 is installed on the detection sensor 102, and the measuring head 104 is fixedly installed on the adapter head 103.

[0059] A linear gear precision detection method adopts the linear gear precision detection device, and comprises the following steps,

[0060] The gear is clamped by the clamping device;

[0061] The clamping device is rotated by the horizontal rotary table 603, and the gear is circumferentially rotated by the driving device, so that different parts of the gear are directed to the three-dimensional workbench 5;

[0062] The height and position of the detection assembly 10 are adjusted by adjusting the three-dimensional workbench 5, so that the detection assembly 10 abuts against the gear to detect parameters.

[0063] Different height spacers 7072 are respectively arranged on both sides of the bolt fixing hole at the top of the support block 7071, the upper and lower ends of the spacer 7072 abut against the lower end of the support bearing seat 708 and the upper end of the support block 7071 respectively, the distance between the center line of the support bearing seat 708 and the center line of the adjusting bolt 7073 is greater than the distance between the spacer 7072 and the center line of the adjusting bolt 7073, the height change of the support bearing seat 708 is amplified by the spacers 7072 on both sides of the bolt fixing hole, the height of the support bearing seat 708 is quickly adjusted to be flush with the main clamp 80, and then the support bearing seat 708 and the support block 7071 are locked by the adjusting bolt 7073, so that the height adjustment efficiency of the support bearing seat 708 is improved.

[0064] The working principle of the present application is as follows: first, the height of the clamp is pre-adjusted, and the gear clamping rod 90 is installed without clamping the gear detection piece. Loosen the upper top block 8031, loosen the adjusting knob 8027, adjust the height to the appropriate position, tighten the adjusting knob 8027, adjust the upper top roller adjusting screw 8033 and the pressure rod adjusting screw 8035 to the appropriate tightness, press the end of the pressure rod 8026, lift the upper top roller 8025, insert one end of the gear clamping rod 90, and then tighten the upper top screw 8032 to fix one end of the gear clamping rod 90.

[0065] Loosen the adjusting bolt 7073, slide the gear clamping rod 90 to the appropriate position, lift the pad 7072 to the appropriate height, and install the other end of the gear clamping rod 90 in the fixed hole 7081 of the support bearing seat 708. Place the gasket 7072 or tight metal sheet between the support bearing seat 708 and the support block 7071, align the height of the gear left and right end clamping height adjustment assembly 707 and the main clamp 80, and then lock the adjusting bolt 7073.

[0066] Because the contact surfaces of the support block 7071 and the bottom of the support bearing seat 708 are small, and the center line of the support bearing seat 708 is offset from the center line of the two contact surfaces, as shown in the models of Figure 8 and Figure 9 m is the contact surface between the gasket 7072 and one end of the support bearing seat 708; n is the contact surface between the gasket 7072 and the other end of the support bearing seat 708; o is the center line of the support bearing; p is the center line of the adjusting bolt 7073; the distance a between the center of the support bearing seat 708 and the center line of the adjusting bolt 7073 is greater than the distance x between the gasket 7072 and the center line of the adjusting bolt 7073. Preferably, a = 1.2x. Therefore, when the number and height of the gasket 7072 or tight metal sheet placed between the left and right ends of the support bearing seat 708 and the support block 7071 are changed, the corresponding height of the support bearing seat 708 can be amplified or reduced, making the height adjustment more convenient and accurate, facilitating the alignment of the heights of the two ends of the gear clamping rod 90, and improving the detection efficiency.

[0067] Fix the three-dimensional workbench 5 on the marble plane, measure and calibrate the heights of the left and right ends of the gear clamping rod 90 to make them level. Measure the parallelism between the center line of the detection clamp shaft and the horizontal plane at the gear clamping rod 90, which is a detection of the cumulative horizontal error of the structure, reducing the machining precision requirements of the lower support base connecting plate 601, support seat 602 and other components.

[0068] Next, the horizontal plane angle is adjusted, and the device can detect cylindrical spur gears, conical spur gears and planar spur gears. Corresponding to the horizontal plane rotation angles of 0°, α° (0 < α < 90) and 90°, respectively, that is, the probe 104 is kept perpendicular to the helical surface where the contact line of the spur gear is located.

[0069] On the basis of completing the height pre-adjustment, according to the horizontal plane rotation angle corresponding to the linear gear sample, the handle of the horizontal rotary table 603 is pushed to coarsely adjust the horizontal plane rotation angle, and the minimum graduation of the horizontal rotary table 603 is 0.1°. At this time, the third servo motor 805 is driven to rotate the gear clamping rod 90 and the gear. The driving motor moves the y-axis to the measuring head 104 to contact the gear clamping rod 90, and the driving motor moves the x-axis, and the measuring head 104 translates in the x-axis direction. If the detection sensor 102 reads the change, the first fine micrometer head 704 and the second fine micrometer head 706 are rotated to rotate the adjustable plate 702 to the appropriate angle to realize fine adjustment of the angle. Compared with the existing linear gear detection equipment, the adjustable plate 702, the first fine micrometer head 704 and the second fine micrometer head 706 are directly arranged below the main clamp 80, the structure has smaller bearing, and the rotation debugging is more flexible. When the first fine micrometer head 704 and the second fine micrometer head 706 move 0.01 mm, the corresponding horizontal plane rotation angle is about 0.0034° left turn or right turn. The structure can reduce the bearing, improve the minimum graduation value of the angle adjustment, and make the adjustment more convenient and accurate.

[0070] The gear driving system is composed of the third motor support 804 and the third servo motor 805. The third servo motor 805 is fixedly connected with the motor support 804 through screws. The third servo motor 805 transmits the torque to the second roller 8024 through a shaft coupling. The first roller 8023, the second roller 8024 and the upper top roller 8025 jointly clamp the gear clamping rod 90. The rotation errors among the three rollers can be offset to a certain extent, the clamping precision is improved, the gear clamping rod 90 can be conveniently and quickly disassembled, the second roller 8024 rotates, drives the first roller 8023, the upper top roller 8025 and the gear clamping rod 90 to rotate through friction, and thus drives the measured gear to rotate.

[0071] The first servo motor 405 and the second servo motor 305 are arranged on the X-axis displacement table 40 and the Y-axis displacement table 30 respectively, and are used to drive the X-axis displacement table 40 and the Y-axis displacement table 30 to realize linear motion. The first servo motor 405 and the second servo motor 305 convert rotation into linear motion through a screw nut 4047. The guide rails of the X-axis displacement table 40 and the Y-axis displacement table 30 adopt cross roller guide rails. The screw nut 4047 is located in the middle of the cross roller guide rails and drives the X-axis or the Y-axis to move through the screw nut 4047. The cross roller guide rails can improve the motion accuracy of the guide rails. The first grating ruler 402 and the second grating ruler 302 are arranged on the X-axis displacement table 40 and the Y-axis displacement table 30 respectively, and form closed-loop control with the first servo motor 405 and the second servo motor 305 respectively to realize precise positioning.

[0072] The height of the Z-axis lifting platform 20 is determined by the diameter of the gear clamping rod 90. The third servo motor 805 rotates the gear clamping rod 90 and the gear in the circumferential direction. The driving motor moves the y-axis until the probe 104 contacts the gear clamping rod 90, and the driving motor moves the x-axis until the probe 104 translates in the x-axis direction. The height of the Z-axis lifting platform 20 is adjusted to maximize the reading of the detection sensor 102, at which time the center height of the probe 104 is consistent with the height of the gear clamping rod 90.

[0073] After determining the height of the gear clamping rod 90 and the rotation angle of the horizontal plane, it is removed from the device.

[0074] The wire gear detection piece is fixedly installed on the gear clamping rod 90 by two end limiting collars. The wire gear detection piece and the gear clamping rod 90 are installed according to the above method. That is, loosen the upper top block 8031, loosen the adjustment knob 8027, adjust the height to the appropriate position, tighten the adjustment knob 8027, adjust the upper top roller adjusting screw 8033 and the pressure rod adjusting screw 8035 to the appropriate tightness, press the end of the pressure rod 8026, lift the upper top roller 8025, insert one end of the gear clamping rod 90, then tighten the upper top screw 8032 to fix one end of the gear clamping rod 90. Loosen the adjusting bolt 7073, slide the gear clamping rod 90 to the appropriate position, lift the support bearing seat 708 to the appropriate height, install the other end of the gear clamping rod 90 in the fixed hole 7081 of the support bearing seat 708. Place a gasket 7072 or a tight metal sheet between the support bearing seat 708 and the support block 7071, align the height of the left and right end clamping height adjustment assemblies 707 and the main clamp 80, and then lock the adjusting bolt 7073.

[0075] After the wire gear sample is clamped, the driving X-axis moves the probe 104 to the end face of the wire gear sample, the driving Y-axis moves the probe 104 close to the wire gear sample, the gear shaft is jogged to align the tooth top surface of the wire gear sample with the probe 104, and the driving Y-axis moves the probe 104 to contact the tooth top surface. According to the program, rotate along the gear shaft center and cooperate with the movement of the probe 104 in the Y direction to the other end face, so as to measure a single tooth top surface. Rotate to measure three tooth top surfaces, and take the average as the tooth top surface diameter data, from which the position of the wire gear contact line is obtained. Drive the Y-axis away from the wire gear sample.

[0076] According to the requirements of the detection project, the X-axis moving probe 104 is driven to the middle (or end face) of the wire gear sample, the Y-axis moving probe 104 is driven to approach the wire gear sample, the gear shaft is jogged to align the probe 104 to the gear slot, the Y-axis moving probe 104 is driven to the contact line position, the gear shaft is positively rotated to the contact tooth surface of the probe 104, and the Y-axis is driven away from the wire gear sample. The positively rotating gear shaft is jogged to the next gear slot to align the probe 104, the Y-axis moving probe 104 is driven to the contact line position, the gear shaft is positively rotated to the tooth surface of the next tooth contacted by the probe 104, and the Y-axis is driven away from the wire gear sample, so that the tooth thickness of one tooth is obtained, and the remaining detection projects can be measured similarly.

[0077] The main function of the present application is that the clamping device is arranged on the horizontal rotary table 603, the wire gear is clamped by the clamping device, the clamping device and the wire gear are rotated in the circumferential direction by the horizontal rotary table 603, the height and position are adjusted by cooperating with the detection assembly 10 installed on the three-dimensional workbench 5, each part of the wire gear can be detected, and the precision detection of different wire gear design configurations is realized.

[0078] The gear clamping rod 90 is clamped by a plurality of rollers, the rotation error of the shaft center of the gear clamping rod 90 is small, and the friction force is used to transmit torque. Within the allowable range of the friction force, the rollers and the gear clamping rod 90 do not slide relative to each other, and the gear detection can be performed. When the probe 104 on the detection sensor 102 and the measured gear accidentally interfere due to an operation error, the rollers and the gear clamping rod 90 slide relative to each other, the detection sensor 102 and the third servo motor 805 are protected from being damaged, and the use fault tolerance of the detection assembly 10 is improved.

[0079] By adjusting the number and height of the shims 7072 placed between the left and right ends of the support bearing seat 708 and the support block 7071, the corresponding height of the support bearing seat 708 can be enlarged or reduced, so that the height adjustment is more convenient and accurate.

[0080] The above embodiments are the preferred embodiments of the present application, but the embodiments of the present application are not limited by the above embodiments, and any changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principles of the present application should be equivalent replacement methods and should be included in the protection scope of the present application.

Claims

1. A device for detecting the accuracy of linear gears, characterized in that: Including horizontal turntables; The horizontal turntable is equipped with a clamping device for clamping gears. The clamping device is connected to a drive device, which is used to drive the gears to rotate circumferentially. A three-dimensional worktable is provided on one side of the horizontal turntable. A detection component is provided on the three-dimensional worktable. The detection component is used to abut against the gear to perform parameter detection. The clamping device includes a main clamp and an auxiliary support clamp arranged opposite to each other. The main clamp is located on one side of the horizontal turntable and is used to clamp one end of the gear; the auxiliary support clamp is located on the other side of the horizontal turntable and is used to clamp the other end of the gear. The auxiliary support fixture includes an adjustable plate and a height adjustment assembly. The adjustable plate is fixedly connected to the horizontal turntable. The main fixture and the height adjustment assembly are both mounted on the adjustable plate. The height adjustment assembly is used to clamp the other end of the gear. The height adjustment assembly includes a support block, a support bearing seat, and an adjusting bolt. The support block is fixedly connected to the adjustable plate. The support bearing seat is located above the support block and is used to clamp the other end of the gear. The support bearing seat and the support block are locked together by the adjusting bolt. A shim is placed between the top of the support block and the bottom of the support bearing seat. A bolt fixing hole is provided in the middle of the top of the support block for connecting with an adjusting bolt. The distance between the axis of the bearing housing and the center line of the adjusting bolt is greater than the distance between the shim and the center line of the adjusting bolt; Washers are placed on both sides of the bolt fixing hole, and the heights of the washers on both sides may be the same or different.

2. The linear gear precision testing device according to claim 1, characterized in that: The clamping device also includes a gear clamping bar that is fixedly inserted through the gear shaft hole. The main clamp holds one end of the gear clamping bar, and the support bearing seat is provided with a fixing hole for fixing the other end of the gear clamping bar.

3. A method for detecting the accuracy of linear gears, characterized in that: The linear gear precision testing device according to claim 1 or 2 includes the following steps: Gears are held in place using a clamping device; A horizontal turntable is used to rotate the clamping device, and the gear is driven to rotate circumferentially by the drive device, so that different parts of the gear face the three-dimensional worktable. Adjust the 3D worktable to adjust the height and position of the detection component, so that the detection component abuts against the gear for parameter detection.

4. The method for detecting the accuracy of linear gears according to claim 3, characterized in that: Clamping a gear using a clamping device includes the following steps: Place shims of different heights on both sides of the bolt fixing hole at the top of the support block. The upper and lower ends of the shims abut against the lower end of the support bearing seat and the upper end of the support block, respectively. The distance between the axis of the support bearing seat and the center line of the adjusting bolt is greater than the distance between the shims and the center line of the adjusting bolt. By using the shims on both sides of the bolt fixing hole to amplify the height change of the support bearing seat, the height of the support bearing seat can be quickly adjusted to be flush with the main fixture. Then, the adjusting bolt is used to lock the support bearing seat and the support block, thereby improving the height adjustment efficiency of the support bearing seat.

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