A tooth surface error detection mechanism for a toroidal worm

Abstract

The application discloses a kind of tooth surface error detection mechanisms of torus worm, comprising: two bases, symmetrically arranged, one of which is provided with a rotating motor in another base is provided with support frame, one end of the torus worm to be detected is connected to the output shaft of rotating motor, and the other end is erected on support frame;Support, including two vertical struts and a horizontal support bar, two vertical struts are vertically arranged on two bases, and the horizontal support bar is horizontally erected on two vertical struts;Two fixed seats, movably arranged on the horizontal support bar;Two detection mechanisms are respectively connected to two fixed seats, and the detection mechanism includes depth sensor and gradient sensor, the application utilizes two detection mechanisms to simultaneously approach inward, to ensure that two described detection mechanisms are respectively oriented towards the two teeth of each other on the torus worm, so as to ensure that every two symmetrical tooth surfaces are detected by detection mechanism simultaneously gradient, depth and other data, improve detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of tooth surface error detection for toroidal worm gears. More specifically, this invention relates to a tooth surface error detection mechanism for toroidal worm gears. Background Technology

[0002] Toroidal worm gear drives are widely used transmission mechanisms in mechanical equipment, commonly used as meshing components in various precision and heavy-duty transmissions. They possess excellent properties such as smooth transmission, compact meshing, high efficiency, strong load-bearing capacity, and long service life, and are widely applied in precision machine tools, industrial robots, rail transportation, and aerospace. As key functional components, their design and manufacturing precision and meshing quality directly affect the development of pillar industries such as precision machine tools and industrial robots in my country. The toroidal worm gear, as one of the main components in a toroidal worm gear drive, has its tooth surface error significantly impacting transmission performance. Compared to the uniform teeth of conventional worm gears, the tooth structure of toroidal worm gears is more complex, making precise inspection of its tooth surface a key concern in the industry. Summary of the Invention

[0003] To achieve these objectives and other advantages according to the invention, a preferred embodiment of the invention provides a tooth surface error detection mechanism for a toroidal worm gear. The toroidal worm gear has an odd number of teeth, with the central tooth as the axis of symmetry, and the remaining teeth symmetrically distributed on both sides of the central tooth. The tooth surface error detection mechanism includes:

[0004] The base consists of two symmetrically arranged bases. One base contains a rotary motor, and the other base contains a support frame. One end of the toroidal worm gear to be tested is connected to the output shaft of the rotary motor, and the other end is mounted on the support frame. The toroidal worm gear rotates as the output shaft of the rotary motor rotates.

[0005] The support frame includes two vertical support rods and one horizontal support rod. The two vertical support rods are respectively vertically mounted on the two bases, and the horizontal support rod is horizontally supported on the two vertical support rods.

[0006] There are two fixed seats, and the fixed seats are movably mounted on the transverse support rod;

[0007] The detection mechanism has two parts, each connected to one of the two fixed bases. The detection mechanism includes a depth sensor to detect the depth of the tooth surface and a slope sensor to detect the slope of the tooth surface.

[0008] Preferably, the tooth surface error detection mechanism of the worm in the toroidal worm gear pair further includes:

[0009] A two-way hydraulic rod, which is laterally fixed to the transverse support rod;

[0010] The two fixed seats are respectively fixed at both ends of the bidirectional hydraulic rod, and the two fixed seats move as the bidirectional hydraulic rod extends and retracts.

[0011] Preferably, the two detection mechanisms are respectively oriented towards two symmetrical teeth on the toroidal worm.

[0012] Preferably, the detection mechanism includes a first connecting rod, a second connecting rod, a one-way hydraulic rod, and a detection head. One end of the first connecting rod is vertically connected to the fixed base, and the other end is rotatably hinged to the second connecting rod. The detection head is connected to the end of the second connecting rod away from the first connecting rod. The detection head is equipped with the depth sensor and the slope sensor. The fixed end of the one-way hydraulic rod is connected to the first connecting rod, and the telescopic end of the one-way hydraulic rod is connected to the second connecting rod. As the telescopic end of the one-way hydraulic rod extends or retracts, the angle between the first connecting rod and the second connecting rod changes accordingly.

[0013] Preferably, the detection head includes a connecting frame, a third connecting rod, and a fourth connecting rod. The connecting frame is connected to the end of the second connecting rod away from the first connecting rod. The connecting frame is triangular, and the depth sensor is disposed at its bottom. The sensing end of the depth sensor faces the top and bottom of the gear teeth. One end of the third connecting rod and one end of the fourth connecting rod are respectively located at the two ends of the bottom of the connecting frame.

[0014] Preferably, a connecting ball is provided at the end of the second connecting rod away from the first connecting rod, and there is a receiving cavity therein. The connecting frame includes a first rod, a second rod, and a third rod. The first rod, the second rod, and the third rod are connected end to end to form a triangle. A universal ball is connected at the connection point of the first rod and the second rod. The universal ball is rotatably disposed in the receiving cavity of the connecting ball.

[0015] Preferably, the end of the third connecting rod away from the connecting frame is provided with a caster wheel, and the end of the fourth connecting rod away from the connecting frame is also provided with a caster wheel, the caster wheel being able to travel along the bottom of the wheel teeth;

[0016] Both the third and fourth connecting rods are equipped with slope sensors in their middle sections, with the sensing end of the slope sensor facing the tooth surface of the gear teeth.

[0017] Preferably, the tooth surface error detection mechanism of the worm in the toroidal worm gear pair further includes a first spring and a second spring, wherein,

[0018] The first spring is connected at both ends to the third rod and the third connecting rod, respectively;

[0019] The two ends of the second spring are respectively connected to the third rod and the fourth connecting rod;

[0020] One end of the third connecting rod and one end of the fourth connecting rod are respectively rotatably hinged to the bottom ends of the connecting frame.

[0021] Preferably, the heights of the third and fourth connecting rods are adjustable.

[0022] The present invention has at least the following beneficial effects:

[0023] This invention utilizes two detection mechanisms that move inward simultaneously, ensuring that each detection mechanism faces two symmetrical teeth on the toroidal worm gear. This ensures that the slope, depth, and other data of each pair of symmetrical tooth surfaces are detected simultaneously by the detection mechanism, thereby improving detection efficiency.

[0024] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the tooth surface error detection mechanism of a toroidal worm gear in one embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the detection head in one embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the connection between the connecting frame and the second connecting rod in one embodiment of the present invention. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0030] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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, the above terms should not be construed as limiting this invention.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0032] like Figure 1 As shown, a preferred embodiment of the present invention provides a tooth surface error detection mechanism for a toroidal worm gear. The toroidal worm gear has an odd number of teeth, with the central tooth as the axis of symmetry, and the remaining teeth symmetrically distributed on both sides of the central tooth. The tooth surface error detection mechanism includes:

[0033] There are two bases 100, which are symmetrically arranged. One base 100 is equipped with a rotary motor 110, and the other base 100 is equipped with a support frame 200. One end of the toroidal worm gear 300 to be tested is connected to the output shaft of the rotary motor 110, and the other end is mounted on the support frame 200. The toroidal worm gear rotates as the output shaft of the rotary motor 110 rotates.

[0034] The support frame includes two vertical support rods 410 and one horizontal support rod 420. The two vertical support rods 410 are vertically mounted on the two bases 100, and the horizontal support rod 420 is horizontally supported on the two vertical support rods 410.

[0035] There are two fixing seats 500, and the fixing seats 500 are movably mounted on the transverse support rod 420;

[0036] The detection mechanism has two parts, each connected to one of the two fixed bases 500. The detection mechanism includes a depth sensor 620 to detect the depth of the tooth surface, which is the height difference between the lowest and highest points of the tooth surface. The detection mechanism also includes a slope sensor 610 to detect the slope of the tooth surface.

[0037] In the above implementation scheme, one end of the toroidal worm gear 300 to be tested is fixedly connected to the output shaft of the rotary motor 110, and the other end is movably mounted on the support frame 200, but not fixedly connected to the support frame 200, so as to avoid the support frame affecting the rotation of the toroidal worm gear 300. The base 100 has a built-in counterweight to prevent the rotation of the toroidal worm gear from affecting the stability of the base 100.

[0038] The toroidal worm gear is divided into left and right parts, which are completely symmetrical. The slope and depth of multiple teeth on the same side (left or right) are different. Therefore, when detecting the tooth surface error of the toroidal worm gear, the tooth surfaces on both sides are detected simultaneously, which is highly efficient. Moreover, the tooth surfaces on both sides can be detected against each other. If the data is inconsistent, it is unqualified; if the data is consistent, it is qualified. During the detection, the two detection mechanisms are controlled to move inward simultaneously, ensuring that the two detection mechanisms are respectively facing two symmetrical teeth on the toroidal worm gear. This ensures that the slope, depth, and other data of each pair of symmetrical tooth surfaces are detected by the detection mechanism at the same time.

[0039] In another technical solution, the tooth surface error detection mechanism of the worm in the toroidal worm gear pair further includes a bidirectional hydraulic rod 700, which is laterally fixed on the transverse support rod 420; two fixed seats 500 are respectively fixed at both ends of the bidirectional hydraulic rod 700, and the two fixed seats 500 move with the extension and retraction of the bidirectional hydraulic rod 700. The bidirectional hydraulic rod 700 is used to move the two detection mechanisms synchronously outward or inward to achieve symmetrical movement.

[0040] In another technical solution, the detection mechanism includes a first connecting rod 630, a second connecting rod 640, a one-way hydraulic rod 650, and a detection head 660. One end of the first connecting rod 630 is vertically fixed to the fixed base 500, and the other end is rotatably hinged to the second connecting rod 640. The detection head 660 is connected to the end of the second connecting rod 640 away from the first connecting rod 630. The detection head 660 is equipped with a depth sensor 620 and a slope sensor 610. The fixed end of the one-way hydraulic rod 650 is connected to the first connecting rod 630, and the telescopic end of the one-way hydraulic rod 650 is connected to the second connecting rod 640. As the telescopic end of the one-way hydraulic rod 650 extends or retracts, the angle between the first connecting rod 630 and the second connecting rod 640 changes accordingly.

[0041] In the above implementation scheme, considering that the slope and depth of multiple tooth surfaces on the same side (left or right) are different, the detection mechanism needs to use different angles to accurately measure different tooth surfaces. If the same angle is used to measure all tooth surfaces, inaccurate measurement will inevitably occur. In the above technical solution, by controlling the extension and retraction of the one-way hydraulic rod 650, the second connecting rod 640 is driven to rotate around the hinge axis of the first connecting rod 630 and the second connecting rod 640, thereby achieving the purpose of adjusting the angle between the first connecting rod 630 and the second connecting rod 640.

[0042] In another technical solution, the detection head 660 includes a connecting frame 661, a third connecting rod 662, and a fourth connecting rod 663. The connecting frame 661 is connected to the end of the second connecting rod 640 away from the first connecting rod 630. The connecting frame 661 is triangular, and the depth sensor 620 is disposed at its bottom. The sensing end of the depth sensor 620 faces the top and bottom of the gear teeth. One end of the third connecting rod 662 and one end of the fourth connecting rod 663 are respectively located at the two ends of the bottom of the connecting frame 661.

[0043] In the above implementation scheme, the third connecting rod 662 and the fourth connecting rod 663 are respectively close to the two sides of a gear tooth, clamping the gear tooth inside, so that the detection process is more stable.

[0044] In another technical solution, a connecting ball 6615 is provided at the end of the second connecting rod 640 away from the first connecting rod 630, which has a receiving cavity. The connecting frame 661 includes a first rod 6611, a second rod 6612, and a third rod 6613. The first rod 6611, the second rod 6612, and the third rod 6613 are connected end to end to form a triangle. A universal ball 6614 is connected at the connection point of the first rod 6611 and the second rod 6612. The universal ball 6614 is rotatably disposed in the receiving cavity of the connecting ball 6615.

[0045] In the above implementation scheme, considering that the slope and depth of the tooth surfaces of multiple gears on the same side (left or right) are different, coarse adjustment can be achieved by adjusting the angle between the first connecting rod 630 and the second connecting rod 640. However, sometimes the detection head cannot be accurately aligned with the tooth surface. Therefore, a universal ball is set here, and the steering adjustment of the universal ball can be used to achieve precise adjustment.

[0046] In another technical solution, a caster wheel 664 is provided at the end of the third connecting rod 662 away from the connecting frame 661, and a caster wheel 664 is also provided at the end of the fourth connecting rod 663 away from the connecting frame 661. The caster wheel 664 can travel along the bottom of the gear teeth. A slope sensor is provided in the middle of both the third connecting rod 662 and the fourth connecting rod 663, with the sensing end of the slope sensor facing the tooth surface. During the movement of the detection head along the toroidal worm gear, the caster wheel 664 travels along the gear teeth, thereby ensuring the stable movement of the detection head along the gear teeth.

[0047] In another technical solution, the tooth surface error detection mechanism of the worm gear in the toroidal worm gear pair further includes a first spring 670 and a second spring 680. The first spring 670 is connected at both ends to the third rod 6613 and the third connecting rod 662, respectively. The second spring 680 is connected at both ends to the third rod 6613 and the fourth connecting rod 663, respectively. One end of the third connecting rod 662 and one end of the fourth connecting rod 663 are rotatably hinged to the bottom ends of the connecting frame 661. The heights of the third connecting rod 662 and the fourth connecting rod 663 are adjustable. By utilizing the elasticity of the first spring 670 and the second spring 680, the included angle between the third connecting rod 662, the fourth connecting rod 663, and the bottom of the connecting frame 661 is controlled. Combined with the adjustable heights of the third connecting rod 662 and the fourth connecting rod 663, the detection head can be clamped onto gear teeth of different sizes.

[0048] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A tooth surface error detection mechanism for a toroidal worm gear, wherein the toroidal worm gear has an odd number of teeth, with the central tooth as the axis of symmetry, and the remaining teeth symmetrically distributed on both sides of the central tooth, characterized in that, The tooth surface error detection mechanism includes: The base consists of two symmetrically arranged bases. One base contains a rotary motor, and the other base contains a support frame. One end of the toroidal worm gear to be tested is connected to the output shaft of the rotary motor, and the other end is mounted on the support frame. The toroidal worm gear rotates as the output shaft of the rotary motor rotates. The support includes two vertical struts and one horizontal support rod. The two vertical struts are respectively vertically mounted on the two bases, and the horizontal support rod is horizontally mounted on the two vertical struts. There are two fixed seats, and the fixed seats are movably mounted on the transverse support rod; The detection mechanism has two parts, each connected to one of the two fixed bases. The detection mechanism includes a depth sensor to detect the depth of the tooth surface and a slope sensor to detect the slope of the tooth surface. The detection mechanism includes a first connecting rod, a second connecting rod, a one-way hydraulic rod, and a detection head. One end of the first connecting rod is vertically connected to the fixed base, and the other end is rotatably hinged to the second connecting rod. The detection head is connected to the end of the second connecting rod away from the first connecting rod. The detection head is equipped with the depth sensor and the slope sensor. The fixed end of the one-way hydraulic rod is connected to the first connecting rod, and the telescopic end of the one-way hydraulic rod is connected to the second connecting rod. As the telescopic end of the one-way hydraulic rod extends or retracts, the angle between the first connecting rod and the second connecting rod changes accordingly. The detection head includes a connecting frame, a third connecting rod, and a fourth connecting rod. The connecting frame is connected to the end of the second connecting rod away from the first connecting rod. The connecting frame is triangular in shape, and the depth sensor is disposed at its bottom. The sensing end of the depth sensor faces the top and bottom of the gear teeth. One end of the third connecting rod and one end of the fourth connecting rod are respectively located at the two ends of the bottom of the connecting frame. The second connecting rod has a connecting ball at the end away from the first connecting rod, which has a receiving cavity. The connecting frame includes a first rod, a second rod, and a third rod. The first rod, the second rod, and the third rod are connected to each other at their ends to form a triangle. The connection between the first rod and the second rod is connected to a universal ball, which is rotatably disposed in the receiving cavity of the connecting ball. The third connecting rod is provided with a caster wheel at the end away from the connecting frame, and the fourth connecting rod is also provided with a caster wheel at the end away from the connecting frame. The caster wheel can travel along the bottom of the wheel teeth. Both the third and fourth connecting rods are equipped with slope sensors in the middle, with the sensing end of the slope sensor facing the tooth surface of the gear teeth. It further includes a first spring and a second spring, wherein, The first spring is connected at both ends to the third rod and the third connecting rod, respectively; The two ends of the second spring are respectively connected to the third rod and the fourth connecting rod; One end of the third connecting rod and one end of the fourth connecting rod are respectively rotatably hinged to the bottom ends of the connecting frame.

2. The tooth surface error detection mechanism for the toroidal worm gear according to claim 1, characterized in that, Further includes: A two-way hydraulic rod, which is laterally fixed to the transverse support rod; The two fixed seats are respectively fixed at both ends of the bidirectional hydraulic rod, and the two fixed seats move as the bidirectional hydraulic rod extends and retracts.

3. The tooth surface error detection mechanism for the toroidal worm gear according to claim 1, characterized in that, The two detection mechanisms are respectively oriented towards two symmetrical gear teeth on the toroidal worm.

4. The tooth surface error detection mechanism for the toroidal worm gear according to claim 1, characterized in that, The heights of the third and fourth connecting rods are adjustable.

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