Inverted bevel gear taper detection equipment

Abstract

The invention discloses inverted bevel gear taper detection equipment, and relates to the technical field of gear taper detection, the inverted bevel gear taper detection equipment comprises a rack, a gear positioning and clamping device is arranged in the rack, two sides of the gear positioning and clamping device are respectively provided with a displacement sensor moving device, and the displacement sensor moving devices are arranged on the rack; the two-way lead screw drives the first V-shaped positioning block and the second V-shaped positioning block to center and clamp the bottom of the gear, meanwhile, the ejector rod with the compression spring is used for automatically aligning the center of a tooth groove, and accurate positioning is guaranteed. During detection, the micrometer head drives the displacement sensor to advance to the tooth groove and record the horizontal distance, then the displacement platform vertically moves the workpiece and records the vertical distance, the control system automatically calculates and displays the taper value according to two groups of data, the whole process is completed through single clamping and one scanning, manual calculation is not needed, measurement errors are avoided, and the detection precision is high; meanwhile, the device is smooth in operation process, safe in reset, suitable for all-weather batch detection of a production line and high in detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of gear taper detection technology, and in particular to a device for detecting the taper of an inverted bevel gear. Background Technology

[0002] As a core component of the power shifting unit in agricultural machinery, the taper accuracy of the inverted bevel gear directly affects the reliability of axial positioning after shifting. During operations involving the transmission of high torque and the overcoming of large inertia, inaccurate taper detection can easily lead to gear slippage, affecting not only the continuity of operation but also potentially causing the inverted bevel gear to break, damaging the transmission system and resulting in significant economic losses.

[0003] However, for a long time, the inspection of inverted bevel gears has generally been done manually. The inspection requires clamping the inverted bevel gear multiple times, measuring the diameter or tooth thickness at different positions, and then indirectly estimating the taper value through manual calculation. This inspection method is cumbersome, data acquisition and processing are too time-consuming, and the inspection efficiency is extremely low. At the same time, there are errors in the measurement and conversion process, making it difficult to guarantee the inspection accuracy. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tapered gear taper detection device that overcomes the shortcomings of the above-mentioned devices, such as low detection efficiency and unsatisfactory detection accuracy, and achieves the goal of high detection efficiency and high detection accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a tapered gear taper detection device, including a frame, a gear positioning and clamping device is provided inside the frame, and displacement sensor moving devices are respectively provided on both sides of the gear positioning and clamping device, and the displacement sensor moving devices are mounted on the frame.

[0006] Furthermore, the displacement sensor moving device includes two parallel first linear guide rails, on which a clamp is slidably mounted, and on which the displacement sensor is fixedly held.

[0007] Furthermore, a fixing plate is provided on the frame, the fixing plate is located on the outside of the fixture, and a differential head is provided on the fixing plate. One end of the differential head abuts against the fixture and is used to drive the fixture and displacement sensor to slide along the first linear guide rail. A tension spring connects the fixed plate and the clamp.

[0008] Furthermore, the gear positioning and clamping device includes a central positioning component, a bidirectional lead screw component, and a support frame arranged sequentially from top to bottom; The support frame includes a base plate and side plates that are vertically arranged at both ends of the base plate. The top of the two side plates jointly supports and is fixedly connected to a placement platform. A first receiving groove and a second receiving groove are provided through the placement platform. The base plate, the placement platform, and the two side plates together form a receiving cavity, and the bidirectional lead screw assembly is set in this receiving cavity.

[0009] Furthermore, the bidirectional lead screw assembly includes a bidirectional lead screw and two parallel second linear guides of equal height. The second linear guides are mounted on the base plate. The bidirectional lead screw is provided with two sections of threads with opposite directions and equal distances. A first slider is fitted on one section of the thread, and a second slider is fitted on the other section of the thread. Both the first slider and the second slider are slidably mounted on the two second linear guides.

[0010] Furthermore, the center positioning component includes a first V-shaped positioning block and a second V-shaped positioning block, and a first slider is fixedly connected to the first V-shaped positioning block through a first receiving groove. The first slider drives the first V-shaped positioning block to slide in the first receiving groove. The second slider is fixedly connected to the second V-shaped positioning block through the second receiving groove, and the second slider drives the second V-shaped positioning block to slide in the second receiving groove.

[0011] Furthermore, the top of the first V-shaped positioning block and the second V-shaped positioning block are respectively provided with guide sleeves, and the guide sleeves are respectively slidably connected with push rods, which reciprocate linearly along the guide sleeves.

[0012] Furthermore, the push rod is provided with a first shoulder and a second shoulder, and a guide sleeve is provided between the first shoulder and the second shoulder. A compression spring is provided between the first shoulder and the guide sleeve. The compression spring is sleeved on the push rod, with one end provided on the first shoulder and the other end provided on the end face of the guide sleeve.

[0013] Furthermore, the axes of the two displacement sensors are on the same straight line, the axes of the two push rods are on the same straight line, and the axes of the two displacement sensors are perpendicular to the axes of the two push rods.

[0014] Furthermore, a displacement platform is provided on the frame, and the displacement platform is located below the gear positioning and clamping device; The platform is also equipped with a display screen, which is electrically connected to the displacement sensor.

[0015] This invention, employing the above technical solution, offers the following advantages compared to existing technologies: The first and second V-shaped positioning blocks are driven by a bidirectional lead screw to center and clamp the bottom of the gear. Simultaneously, a push rod with a compression spring automatically aligns the tooth groove center, ensuring precise positioning. During inspection, the displacement sensor is first driven forward to the tooth groove by a differential head, recording the horizontal distance. Then, the workpiece is moved vertically by a displacement platform, recording the vertical distance. The control system automatically calculates and displays the taper value based on these two sets of data. The entire process is completed in a single clamping and scanning operation, eliminating the need for manual calculations and avoiding multiple measurement errors, resulting in high inspection accuracy. Furthermore, the operation is smooth and safe, making it suitable for all-weather batch inspection on production lines, significantly improving inspection efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a tapered gear taper detection device according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the application structure of an inverted bevel gear taper detection device in an embodiment of the present invention; Figure 4 This is a top view of an application of a tapered gear taper detection device in an embodiment of the present invention; Figure 5 This is a partial structural schematic diagram of a tapered gear taper detection device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the gear positioning and clamping device in an embodiment of the present invention; Figure 7 This is a schematic diagram of the bidirectional lead screw assembly in an embodiment of the present invention; Figure 8 This is a schematic diagram of the application structure of the gear positioning and clamping device in an embodiment of the present invention.

[0017] In the diagram: 1 - Stand; 2-Displacement sensor moving device, 201-Clamp, 202-Displacement sensor, 203-Detection head, 204-First linear guide rail, 205-Tension spring, 206-Differential head, 207-Fixing plate; 3-Gear positioning and clamping device, 301-Bidirectional lead screw assembly, 302-Center positioning assembly, 303-Support frame, 304-Bidirectional lead screw, 305-First slider, 306-Second slider, 307-Second linear guide, 308-First V-shaped positioning block, 309-Guide sleeve, 310-Top rod, 311-Compression spring, 312-Base plate, 313-Side plate, 314-Placement platform, 315-First shoulder, 316-Second shoulder, 317-Inverted bevel gear, 318-First receiving groove, 319-Second receiving groove, 320-Second V-shaped positioning block, 321-Handle; 4-Display screen; 5-Displacement platform. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] Examples, such as Figure 1-8 As shown, a tapered gear taper detection device includes a frame 1, a gear positioning and clamping device 3 is provided inside the frame 1, and displacement sensor moving devices 2 are respectively provided on both sides of the gear positioning and clamping device 3, and the displacement sensor moving devices 2 are mounted on the frame 1.

[0020] The displacement sensor moving device 2 includes two parallel first linear guide rails 204. A clamp 201 is slidably mounted on the first linear guide rails 204, and a displacement sensor 202 is fixedly held on the clamp 201. The detection head 203 of the displacement sensor 202 is spherical and is used to align with the tooth groove of the inverted bevel gear 317 to be measured. The displacement sensor 202 is prior art and will not be described in detail here.

[0021] A fixing plate 207 is provided on the frame 1. The fixing plate 207 is located on the outside of the fixture 201. A micrometer head 206 is provided on the fixing plate 207. One end of the micrometer head 206 abuts against the fixture 201 and is used to drive the fixture 201 and the displacement sensor 202 to slide along the first linear guide rail 204 to adapt to inverted bevel gears 317 of different diameters.

[0022] A tension spring 205 is connected between the fixed plate 207 and the clamp 201. The tension spring 205 is used to provide a continuous reset force for the clamp 201 and the displacement sensor 202.

[0023] The first linear guide 204 is used to ensure that the fixture 201 and the displacement sensor 202 can slide precisely on the first linear guide 204 to adapt to the detection requirements of inverted bevel gears 317 of different diameters.

[0024] The gear positioning and clamping device 3 includes a center positioning component 302, a two-way lead screw component 301 and a support frame 303 arranged sequentially from top to bottom. The two-way lead screw component 301 drives the center positioning component 302 to center and align the inverted bevel gear 317.

[0025] The support frame 303 includes a base plate 312 and side plates 313 vertically disposed at both ends of the base plate 312. The tops of the two side plates 313 are jointly supported and fixedly connected to a placement platform 314. A first receiving groove 318 and a second receiving groove 319 are provided through the placement platform 314. The placement platform 314 is used to place the inverted bevel gear 317 to be positioned and aligned. The base plate 312, the placement platform 314 and the two side plates 313 together form a receiving cavity. The bidirectional lead screw assembly 301 is disposed in the receiving cavity.

[0026] The bidirectional lead screw assembly 301 includes a bidirectional lead screw 304 and two parallel, equal-height second linear guides 307. The second linear guides 307 are mounted on a base plate 312. The bidirectional lead screw 304 has two sections of threads with opposite directions and equal spacing. A first slider 305 is fitted onto one section of the thread, and a second slider 306 is fitted onto the other section. The first slider 305 and the second slider 306 have the same pitch. Both the first slider 305 and the second slider 306 are slidably mounted on the two second linear guides 307. When the bidirectional lead screw 304 rotates, it drives the first slider 305 and the second slider 306 to move synchronously towards or in opposite directions on the second linear guides 307.

[0027] One end of the bidirectional lead screw 304 is equipped with a handle 321, which makes it convenient for the operator to manually drive the bidirectional lead screw 304 to rotate.

[0028] The 304 double-acting lead screw is existing technology and will not be described in detail here.

[0029] The center positioning component 302 includes a first V-shaped positioning block 308 and a second V-shaped positioning block 320. A first slider 305 is fixedly connected to the first V-shaped positioning block 308 through a first receiving groove 318. The first slider 305 drives the first V-shaped positioning block 308 to reciprocate in the first receiving groove 318. A second slider 306 is fixedly connected to the second V-shaped positioning block 320 through a second receiving groove 319. The second slider 306 drives the second V-shaped positioning block 320 to reciprocate in the second receiving groove 319. The first receiving groove 318 and the second receiving groove 319 ensure that the first slider 305, the second slider 306 and the center positioning component 302 have sufficient movement space.

[0030] The top of the first V-shaped positioning block 308 and the second V-shaped positioning block 320 are respectively provided with guide sleeves 309, and push rods 310 are slidably connected inside the guide sleeves 309. The push rods 310 reciprocate linearly along the guide sleeves 309.

[0031] The push rod 310 has a first shoulder 315 and a second shoulder 316. A guide sleeve 309 is disposed between the first shoulder 315 and the second shoulder 316. A compression spring 311 is disposed between the first shoulder 315 and the guide sleeve 309. The compression spring 311 is sleeved on the push rod 310, with one end disposed on the first shoulder 315 and the other end disposed on the end face of the guide sleeve 309, for providing axial elastic force to the push rod 310. The end of the push rod 310 is adapted to the tooth groove profile of the inverted bevel gear 317. In this example, the end of the push rod 310 has a hemispherical structure.

[0032] The axes of the two displacement sensors 202 are on the same straight line, the axes of the two push rods 310 are on the same straight line, and the axes of the two displacement sensors 202 are perpendicular to the axes of the two push rods 310.

[0033] The test stand 1 is equipped with a displacement platform 5, which is located below the gear positioning and clamping device 3. The displacement platform 5 is used to adjust the height of the gear positioning and clamping device 3. By adjusting the position of the inverted bevel gear 317 to be tested in the vertical direction, the detection head 203 of the displacement sensor 202 can accurately align with the tooth groove height of gears of different specifications.

[0034] The displacement platform 5 is existing technology and will not be described in detail here.

[0035] The platform 1 is also equipped with a display screen 4, which is electrically connected to the displacement sensor 202 and is used to receive the displacement data output by the displacement sensor 202.

[0036] A tapered gear taper detection device also includes a control system (not shown in the figure). The control system is electrically connected to the display screen 4 and the displacement sensor 202. The displacement sensor 202 detects the displacement of the gear in the tooth groove of the inverted bevel gear 317 and generates a displacement signal that is transmitted to the control system. The control system receives the displacement signal and converts it into the taper value of the inverted bevel gear 317. The display screen 4 receives and displays the taper value output by the control system. The control system is prior art and will not be described in detail here.

[0037] Working principle: In the initial state, the first V-shaped positioning block 308 and the second V-shaped positioning block 320 are in the open state, and the inverted bevel gear 317 to be positioned and aligned is placed on the placement platform 314 of the support frame 303. Turning the handle 321 causes the bidirectional lead screw 304 to rotate, thereby driving the first slider 305 and the second slider 306 to move synchronously towards each other along the second linear guide rail 307, thereby causing the first V-shaped positioning block 308 and the second V-shaped positioning block 320 to move towards the center of the inverted bevel gear 317.

[0038] As the first V-shaped positioning block 308 and the second V-shaped positioning block 320 move toward the center, the hemispherical ends of the two push rods 310 first abut into the tooth groove of the upper bevel gear 317. At the same time, under the continuous elastic force of the compression spring 311, the push rods 310 can extend and retract axially along the guide sleeve 309, automatically guiding the gear to rotate finely until the hemispherical ends of the two push rods 310 are precisely aligned with the center of the corresponding tooth groove, ensuring that the center of the bevel tooth groove and the two push rods 310 are on the same straight line. At this time, the push rods 310 will automatically align the gear under the elastic force of the compression spring 311.

[0039] Once the alignment is complete, turn the handle 321, and the double-acting lead screw 304 continues to rotate. The first V-shaped positioning block 308 and the second V-shaped positioning block 320 gradually contact and clamp the cylindrical gear at the bottom of the inverted bevel gear 317, thereby achieving the final centering and clamping of the workpiece.

[0040] After centering and clamping, the differential head 206 drives the clamp 201 and displacement sensor 202 to slide along the first linear guide 204 towards the gear. When the detection head 203 of the displacement sensor 202 is engaged with the tooth groove of the inverted bevel gear 317, the operator can choose to continue advancing a certain distance according to the design taper and tooth width of this type of bevel gear. After the detection head 203 moves into position, the distance rotated by the differential head 206 is recorded, and this distance data is input into the control system.

[0041] After inputting the data, keeping the position of the displacement sensor 202 unchanged, the displacement platform 5 is adjusted. The displacement platform 5 drives the gear positioning and clamping device 3 and the clamped inverted bevel gear 317 to move vertically, thereby changing the Z-axis distance between the gear tooth groove and the displacement sensor detection head 5. The moving distance can be adjusted automatically according to the width of the inverted bevel gear 317. After the displacement platform 5 moves into position, the vertical distance of the displacement platform 5 is recorded, and this distance data is input into the control system. The control system accurately calculates the taper of the inverted bevel gear 317 based on the two input distance data and displays the detection result on the display screen 4.

[0042] After the inspection is completed, firstly, the differential head 206 of the displacement sensor assembly 2 is adjusted in the reverse direction, driving the displacement sensor 202 to slide backward along the first linear guide 204, so that its detection head 203 completely exits the tooth groove of the inverted bevel gear 317 and disengages from the tooth surface. Then, the displacement platform 5 is adjusted in the reverse direction, driving the inverted bevel gear 317 to the initial height. Finally, the bidirectional lead screw 304 rotates in the reverse direction, and the first slider 305 and the second slider 306 drive the first V-shaped positioning block 308 and the second V-shaped positioning block 320 to reset and open, releasing the centering clamping state of the inverted bevel gear 317. The push rod 310 resets under the action of the reset spring 311, disengaging from the tooth groove of the inverted bevel gear 317. The operator can then remove the inspected inverted bevel gear 317 and proceed to inspect the next workpiece.

[0043] The first V-shaped positioning block 308 and the second V-shaped positioning block 320 are driven by a bidirectional lead screw 304 to center and clamp the bottom of the gear. Simultaneously, the push rod 310 with a compression spring 311 automatically aligns the center of the gear tooth groove, ensuring precise positioning. During inspection, the displacement sensor 202 is first driven forward to the gear groove by the differential head 206 to record the horizontal distance. Then, the workpiece is vertically moved by the displacement platform 5, and the vertical distance is recorded. The control system automatically calculates and displays the taper value based on the two sets of data. The entire process is completed in a single clamping and scanning operation, eliminating the need for manual calculations and avoiding multiple measurement errors, resulting in high inspection accuracy. Furthermore, the operation is smooth and the reset is safe, making it suitable for all-weather batch inspection on production lines and significantly improving inspection efficiency.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A device for detecting the taper of inverted bevel gears, characterized in that: Includes a stand (1), a gear positioning and clamping device (3) is provided inside the stand (1), and displacement sensor moving devices (2) are provided on both sides of the gear positioning and clamping device (3), and the displacement sensor moving devices (2) are set on the stand (1).

2. The tapered gear taper detection device as described in claim 1, characterized in that: The displacement sensor moving device (2) includes two parallel first linear guide rails (204), and a clamp (201) is slidably provided on the first linear guide rails (204), and a displacement sensor (202) is fixedly held on the clamp (201).

3. The tapered gear taper detection device as described in claim 2, characterized in that: The frame (1) is provided with a fixing plate (207), which is located outside the fixture (201). The fixing plate (207) is provided with a micro head (206), one end of which abuts against the fixture (201) to drive the fixture (201) and the displacement sensor (202) to slide along the first linear guide (204). A tension spring (205) is connected between the fixing plate (207) and the clamp (201).

4. The tapered gear taper detection device as described in claim 2, characterized in that: The gear positioning and clamping device (3) includes a center positioning component (302), a two-way lead screw component (301), and a support frame (303) arranged sequentially from top to bottom. The support frame (303) includes a base plate (312) and side plates (313) vertically arranged at both ends of the base plate (312). The top of the two side plates (313) jointly supports and is fixedly connected to a placement platform (314). A first receiving groove (318) and a second receiving groove (319) are provided through the placement platform (314). The base plate (312), the placement platform (314) and the two side plates (313) together form a receiving cavity, and the bidirectional lead screw assembly (301) is set in the receiving cavity.

5. The tapered gear taper detection device as described in claim 4, characterized in that: The bidirectional lead screw assembly (301) includes a bidirectional lead screw (304) and two parallel second linear guides (307) of equal height. The second linear guides (307) are mounted on a base plate (312). The bidirectional lead screw (304) is provided with two threads with opposite directions and equal distances. A first slider (305) is fitted on one thread and a second slider (306) is fitted on the other thread. The first slider (305) and the second slider (306) are both slidably mounted on the two second linear guides (307).

6. The tapered gear taper detection device as described in claim 5, characterized in that: The center positioning component (302) includes a first V-shaped positioning block (308) and a second V-shaped positioning block (320). A first slider (305) is fixedly connected to the first V-shaped positioning block (308) through a first receiving groove (318). The first slider (305) drives the first V-shaped positioning block (308) to slide in the first receiving groove (318). The second slider (306) is fixedly connected to the second V-shaped positioning block (320) through the second receiving groove (319), and the second slider (306) drives the second V-shaped positioning block (320) to slide in the second receiving groove (319).

7. The tapered gear taper detection device as described in claim 6, characterized in that: The top of the first V-shaped positioning block (308) and the second V-shaped positioning block (320) are respectively provided with guide sleeves (309), and the guide sleeves (309) are respectively slidably connected with push rods (310), and the push rods (310) reciprocate linearly along the guide sleeves (309).

8. The tapered gear taper detection device as described in claim 7, characterized in that: The push rod (310) is provided with a first shoulder (315) and a second shoulder (316). The guide sleeve (309) is located between the first shoulder (315) and the second shoulder (316). A compression spring (311) is provided between the first shoulder (315) and the guide sleeve (309). The compression spring (311) is sleeved on the push rod (310), with one end located on the first shoulder (315) and the other end located on the end face of the guide sleeve (309).

9. The tapered gear taper detection device as described in claim 7, characterized in that: The axes of the two displacement sensors (202) are on the same straight line, the axes of the two push rods (310) are on the same straight line, and the axes of the two displacement sensors (202) are perpendicular to the axes of the two push rods (310).

10. The tapered gear taper detection device as described in claim 2, characterized in that: The platform (1) is provided with a displacement platform (5), which is located below the gear positioning and clamping device (3); The stand (1) is also equipped with a display screen (4), which is electrically connected to the displacement sensor (202).

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