Bevel gear mounting distance measuring device and measuring method

Abstract

The application discloses a bevel gear installation distance measuring device and a measuring method, and belongs to the technical field of bevel gear measuring tools and measuring methods. When a bevel gear is measured to produce a new part, the measurement of the installation distance of the bevel gear is very crucial, and a professional rolling detection machine is usually needed to realize the measurement. However, the rolling detection machine has high cost and limited detection range, and is not suitable for and economical for some occasions with small batch quantity and multiple specifications. The application comprises a support and a center, four supports are arranged correspondingly, two supports are opposite to each other, and the connecting lines of the two pairs of supports are perpendicular to each other, one center is arranged correspondingly on each support, one end of the center is a pointed part, the other end is slidably arranged in the support, the pointed parts of the centers opposite to the support are opposite to each other, a through hole is arranged in the middle of at least one center, the pointed parts of the adjacent centers pass through the through hole, and the other end of the center is connected with a telescopic device. The application is convenient to use, firm to fix and lower in cost.

Description

Technical Field

[0001] A bevel gear mounting distance measuring device and method, belonging to the technical field of bevel gear measuring fixtures and measuring methods. Background Technology

[0002] One commonly used transmission method in the field of gearbox transmission is bevel gear transmission. Bevel gear transmission can not only transmit power but also change the direction of transmission. The most common type is orthogonal shaft transmission, where the axis of the input bevel gear and the axis of the output bevel gear intersect at a 90° angle in the same plane.

[0003] Under normal deceleration conditions, the bevel gear shaft serves as the power input, and the bevel gear serves as the power output. (Refer to the appendix.) Figure 2 The axis A of the bevel gear shaft and the centerline B of the bevel gear intersect at point O in the same plane, forming a 90° angle. Dimension C in the diagram represents the radial mounting distance of the bevel gear, and dimension D represents the axial mounting distance. During the manufacturing and use of bevel gears, the meshing pattern needs to be inspected to confirm whether the machining of the bevel gear meets the design requirements. When measuring bevel gears to produce new parts, measuring the mounting distance is crucial, as it determines whether the newly produced part can be installed on the equipment. Both of these functions typically require a specialized rolling inspection machine, but rolling inspection machines are expensive, have limited inspection range, and are not suitable or economical for small-batch, multi-specification applications.

[0004] Patent CN210464923U discloses a spiral bevel gear installation distance detection device, which uses only two orthogonal gear shafts to fix the gear, resulting in unstable fixing effect and inaccurate measurement effect. Moreover, it requires the use of a transmission reversal structure, which is prone to loosening. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a convenient, secure, and low-cost bevel gear mounting distance measuring device and measuring method.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a bevel gear mounting distance measuring device, characterized in that: it includes supports and tips; four supports are provided correspondingly, two to two opposite each other, and the lines connecting two pairs of supports are perpendicular to each other; each support is provided with a tip, one end of the tip is a point, and the other end is slidably disposed in the support, with the tips of the tips of the tips of the opposite supports facing each other; at least one tip has a through hole in the middle, and the tips of adjacent tips pass through the through hole; the other end of the tip is connected to a telescopic device.

[0007] The bevel gear or bevel gear shaft is fixed by clamping the tops of the opposing supports. The line connecting the two pairs of supports is perpendicular to ensure that the bevel gear and bevel gear shaft are installed axially perpendicularly. The distance between the opposing tops can be adjusted by the telescopic device, thus adapting to a variety of different bevel gear or bevel gear shaft models. The telescopic device is easy to adjust and fix, and the tops fix the bevel gear and bevel gear shaft for easy rotation. It is easy to adjust and observe the meshing pattern, and is convenient to use. The overall manufacturing cost is low.

[0008] Preferably, the telescopic device includes a handwheel push rod, a support with a through hole, and one end of the handwheel push rod is disposed within the through hole; the handwheel push rod is threadedly connected to the through hole; the other end of the tip is disposed within the through hole, and a limiting structure restricting rotation is provided between the tip and the through hole. The handwheel push rod rotates and extends into the support, causing the tip to be pushed out, making it easy to control the extension length of the tip and convenient to control the tip to clamp the bevel gear or bevel gear shaft. The limiting device prevents the tip from passively rotating when the handwheel push rod rotates and pushes it out.

[0009] More preferably, the limiting structure is a rectangular groove, with the other end of the tip being a corresponding rectangle.

[0010] Preferably, the handwheel is provided at the end of the handwheel rod away from the tip, and the plane of the handwheel is perpendicular to the handwheel rod.

[0011] Preferably, it also includes a base, with the support slidably mounted on the base, the sliding direction being parallel to the line connecting the two supports. The slidable mounting of the support on the base facilitates a wide range of movement of the support, providing sufficient installation space and protecting the top edge when hoisting and installing bevel gears or bevel gear shafts.

[0012] In a further preferred embodiment, the base is provided with a slide rail, and the bottom of the support is provided with a slider corresponding to the slide rail, the slider being disposed inside the slide rail.

[0013] In a further preferred embodiment, a fixing plate is provided on one side of the slide rail, and an elongated hole is provided on the fixing plate along the length of the slide rail. A support fixing block is provided between the fixing plate and the support, and a fixing block screw hole is provided on the support fixing block. The threaded end of the bolt passes through the elongated hole and the fixing block screw hole in sequence to connect to one side of the support.

[0014] By tightening the bolts, in conjunction with the support fixing block, the threaded end of the bolt is pressed against the side of the support. At the same time, when the bolts are loosened, they can slide freely in the elongated hole, in conjunction with the adjustable support.

[0015] Preferably, the device also includes positioning sleeves, which are frustum-shaped. There are two positioning sleeves, with their end faces facing each other and their diameters gradually decreasing as they approach each other. The two positioning sleeves are fixedly connected by bolts. The two centers of a pair of supports are each connected to the center of a positioning sleeve. Some bevel gears have large center holes, making it unsuitable to clamp them directly from the two pointed ends with centers. Therefore, two frustum-shaped positioning sleeves facing each other are used to clamp the bevel gear from both sides first, effectively filling the large center hole. Then, the positioning sleeves are clamped with centers, resulting in a more secure fixation and easier rotation of the bevel gear.

[0016] In a further preferred embodiment, the end face of the positioning sleeve with the larger diameter is provided with a central hole for the positioning sleeve, and the corresponding tip is disposed inside the central hole for the positioning sleeve.

[0017] A method for measuring the mounting distance of a bevel gear, characterized in that: the aforementioned bevel gear mounting distance measuring device is used to fix the bevel gear and the bevel gear shaft, wherein one pair of supports clamps and fixes the bevel gear from both sides using centers, and another pair of centers clamps and fixes the bevel gear shaft from both sides, so that the bevel gear and the bevel gear shaft mesh; the formula for calculating the axial mounting distance D is:

[0018]

[0019] The formula for calculating the radial installation distance C is:

[0020]

[0021] Where N is the distance from the non-meshing surface of the bevel gear to the non-adjacent side of the tip perpendicular to its axis, X is the width of the tip, and M is the distance from the non-meshing surface of the bevel gear shaft to the non-adjacent side of the tip perpendicular to its axis.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the bevel gear or bevel gear shaft is clamped and fixed by the tops of the opposite supports, the line connecting the two pairs of supports is perpendicular, ensuring that the axial direction of the bevel gear and the bevel gear shaft is perpendicular. The distance between the opposite tops can be adjusted by the telescopic device, thereby adapting to a variety of different bevel gear or bevel gear shaft models. The telescopic device is easy to adjust and fix, and the rotation of the bevel gear and bevel gear shaft is convenient. It is easy to adjust and observe the meshing pattern, and it is convenient to use. The overall manufacturing cost is low. Attached Figure Description

[0023] Figure 1 A schematic diagram of a distance measuring device installed on a bevel gear.

[0024] Figure 2 This is a schematic diagram of bevel gear meshing.

[0025] Figure 3 A cross-sectional view of the bevel gear mounting distance measuring device.

[0026] Figure 4 for Figure 3 Enlarged view of the structure at point E in the middle.

[0027] Figure 5 for Figure 3 Enlarged view of the structure at point F.

[0028] Figure 6 This is a radial cross-sectional view of the positioning sleeve.

[0029] Figure 7 This is a schematic diagram of the support structure.

[0030] Figure 8 This is a schematic diagram of a slotless top structure.

[0031] Figure 9 This is a schematic diagram of the support fixing block structure.

[0032] Figure 10 This is a schematic diagram of the base structure.

[0033] The components are as follows: 1. Bevel gear shaft; 2. Bevel gear; 3. Positioning sleeve; 4. Grooved center; 5. Support; 6. Support end cover; 7. Cylindrical pin; 8. Handwheel top rod; 9. Support fixing block; 10. Groovless center; 11. Base; 301. Positioning sleeve through hole; 302. Positioning sleeve center hole; 501. Rectangular groove; 502. Fixing countersunk hole; 503. Slider; 1001. Center countersunk hole; 901. Fixing block screw hole; 1101. Slide rail; 1102. Fixing plate. Detailed Implementation

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Example 1

[0036] See attached document Figures 1-3 A bevel gear mounting distance measuring device includes a positioning sleeve 3, a grooved center 4, a support 5, a support end cover 6, a cylindrical pin 7, a handwheel top rod 8, a support fixing block 9, a grooveless center 10, and a base 11.

[0037] See attached document Figure 2 The axis A of bevel gear shaft 1 and the centerline B of bevel gear 2 intersect at point O in the same plane, forming a 90° angle. In the diagram, dimension C is the radial mounting distance of bevel gear 2, and dimension D is the axial mounting distance of bevel gear 2. Bevel gear shaft 1 and bevel gear 2 are fixed in this configuration.

[0038] See attached document Figure 1 , 3 4, 6: The center of bevel gear 2 is generally a cylindrical hole. To position bevel gear 2, positioning sleeves 3 are installed on both sides of the inner hole of bevel gear 2. (See attached diagram) Figure 6There are two corresponding positioning sleeves 3. Each positioning sleeve 3 is frustum-shaped with a stepped positioning surface on its outer wall. The diameters of the two positioning sleeves 3 gradually decrease as they approach each other. Each positioning sleeve 3 has two positioning sleeve through holes 301. The two positioning sleeves 3 are respectively positioned on both sides of the bevel gear 2. Bolts pass through the positioning sleeve through holes 301, the center hole of the bevel gear 2, and the other positioning sleeve through hole 301 to fix the two positioning sleeves 3 together, thereby clamping the bevel gear 2. The stepped positioning surfaces correspond to the bevel gears 2 with different center holes. The center of the side of the positioning sleeve 3 with the larger diameter has a positioning sleeve center hole 302. The corresponding tip is located inside the positioning sleeve center hole 302.

[0039] See attached document Figure 1 , 3 5, 7: There are four supports 5, arranged in pairs opposite each other, and all are slidably mounted on the base 11. A fixed countersunk hole 502 is provided on one side of the bottom of each support 5, and a slider 503 is provided on the bottom surface. A support end cap 6 is provided at the top of each support 5 away from its opposite support 5. The support end cap 6 is fixed to the top of the support 5 by a cylindrical pin 7 and bolts. A threaded hole is provided in the middle of the support end cap 6, and the threaded end of the handwheel rod 8 passes through the threaded hole of the support end cap 6. A handwheel is provided at the other end of the handwheel rod 8. By turning the handwheel, the handwheel rod 8 moves closer to or away from the opposite support 5. A rectangular groove 501 is provided at the end of the threaded hole closer to the opposite support 5. The rectangular groove 501 communicates with the threaded hole and extends through the top of the support 5. One end of a grooved tip 4 or a non-grooved tip 10 is located within the rectangular groove 501, and this end of the grooved tip 4 or non-grooved tip 10 is a rectangle corresponding to the rectangular groove 501, thus preventing the grooved tip 4 or non-grooved tip 10 from rotating when the handwheel rod 8 rotates.

[0040] See attached document Figure 8 The grooved tip 4 or the ungrooved tip 10 is provided with a countersunk hole 1001 on one end face inside the support 5, and the other end is conical. The countersunk hole 1001 corresponds to the end of the handwheel push rod 8, and the end of the handwheel push rod 8 is located in the countersunk hole 1001.

[0041] See attached document Figures 1-4 Two of the grooveless tips 10 on the opposing supports 5 respectively abut against the center holes 302 of the positioning sleeves 3 on both sides of the bevel gear 2, thereby fixing the bevel gear 2 using the two grooveless tips 10. The other two opposing supports 5 are respectively provided with grooved tips 4 and grooveless tips 10. The end of the grooved tip 4 near the opposing support 5 has a long groove along its length. One of the grooveless tips 10 fixing the bevel gear 2 passes through the long groove, so that the tip of the grooveless tip 10 can abut against the end of the bevel gear shaft 1 near the bevel gear 2. The other end face of the bevel gear shaft 1 has a shaft countersunk hole, so that the corresponding grooveless tip 10 can be fixed abutting against the shaft countersunk hole. This achieves the connection of the bevel gear 2 and the bevel gear shaft 1 using four supports 5, three grooveless tips 10, and one grooved tip 4 (see attached diagram). Figure 2 The distance between the grooveless tip 10 and the grooved tip 4 can be adjusted by turning each handwheel push rod 8 to adapt to different sizes of bevel gear shaft 1 or bevel gear 2.

[0042] See attached document Figure 1 , 3 9, 10: The base 11 is provided with two mutually perpendicular slide rails 1101. The slider 503 of the support 5 is set inside the slide rail 1101. A fixing plate 1102 along the direction of the slide rail 1101 is provided on one side of the slide rail 1101. The fixing plate 1102 is set on one side of the corresponding fixing countersunk hole 502. The fixing plate 1102 is provided with an elongated hole along the slide rail 1101. A support fixing block 9 is also provided between the fixing plate 1102 and the bottom of the support 5. The support fixing block 9 is provided with a fixing block screw hole 901. The bolt passes through the elongated hole and the fixing block screw hole 901 in sequence and pushes against the fixing countersunk hole 502. By tightening the bolt, the support 5 drives the slider 503 to push against the side of the slide rail 1101, thereby fixing the support 5.

[0043] See attached document Figure 4 A method for measuring the installation distance of bevel gears involves first loosening the bolts at the lower end of support 5, allowing support 5 to move along slide rail 1101. The bevel gear shaft 1 is then hoisted onto base 11. Support 5 is moved until the tip of the bevel gear shaft 1 is pressed tightly against both ends. Next, the bevel gear 2, with positioning sleeve 3 installed, is hoisted onto base 11. Similarly, support 5 in the other direction is moved until the tip of the tip is pressed tightly against positioning sleeve 3. After moving supports 5 in both directions until the bevel gear shaft 1 and bevel gear 2 reach a roughly meshing position, the bolts at the lower end of support 5 are tightened. At this point, the slider 503 at the lower end of support 5 is pressed tightly against the positioning surface of slide rail 1101, ensuring the coaxiality of the two supports 5 in opposite directions. Red lead powder is applied to the tooth surface of bevel gear shaft 1. The meshing pattern on bevel gear 2 is observed by rotating bevel gear shaft 1. The axial position of bevel gear shaft 1 and bevel gear 2 is finely adjusted by rotating the handwheel push rod 8 in four directions until the meshing pattern meets the requirements. After the meshing pattern meets the requirements, calipers are used to measure the distance between the teeth. Figure 4 The dimensions M and N are measured. The formula for calculating the axial installation distance D is:

[0044]

[0045] The formula for calculating the radial installation distance C is:

[0046]

[0047] Where N is the distance from the non-meshing surface of the bevel gear 2 to the non-adjacent side of the tip perpendicular to its axis, x is the width of the tip, and M is the distance from the non-meshing surface of the bevel gear shaft 1 to the non-adjacent side of the tip perpendicular to its axis.

[0048] Alternatively, the backlash of the bevel gear can be measured by pressing a lead wire. A lead wire is inserted from the meshing side of the bevel gear. As the bevel gear rotates, the lead wire enters the meshing backlash. Because the lead wire has very low hardness, it fills the meshing gap. As the bevel gear rotates again, the lead wire is removed from the disengaging side. The thickness of the pressed lead wire is the meshing backlash value of the bevel gear.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for measuring the mounting distance of a bevel gear, characterized in that: The measurement was performed using a bevel gear mounting distance measuring device. The bevel gear mounting distance measuring device includes a support (5) and a tip; four supports (5) are provided, two to one, and the lines connecting the two pairs of supports (5) are perpendicular to each other; each support (5) is provided with a tip, one end of which is a point and the other end is slidably disposed in the support (5), with the tips of the tips of the tips of the opposite supports (5) facing each other; at least one tip has a through hole in the middle, and the tips of the adjacent tips pass through the through hole; the other end of the tip is connected to a telescopic device; the telescopic device includes a handwheel rod (8), the support (5) has a through hole, one end of the handwheel rod (8) is disposed in the through hole; the handwheel rod is threadedly connected to the through hole; the other end of the tip is disposed in the through hole, and a limiting structure for restricting rotation is provided between the tip and the through hole; The bevel gear mounting distance measuring device also includes a positioning sleeve (3); the positioning sleeve (3) is frustum-shaped; there are two positioning sleeves (3), with their end faces facing each other and their diameters gradually decreasing in the direction of approaching each other, and the two positioning sleeves (3) are fixedly connected by bolts; the two centers of a pair of supports (5) are respectively connected to the center of a positioning sleeve (3); The bevel gear mounting distance measuring device fixes the bevel gear (2) and the bevel gear shaft (1). One pair of supports (5) clamps the bevel gear (2) from both sides using centers, and another pair of centers clamps the bevel gear shaft (1) from both sides, so that the bevel gear (2) meshes with the bevel gear shaft (1); the formula for calculating the axial mounting distance D is: ； The formula for calculating the radial installation distance C is: ； Wherein, N is the distance from the non-meshing surface of the bevel gear (2) to the non-adjacent side of the tip perpendicular to its axis, X is the width of the tip, and M is the distance from the non-meshing surface of the bevel gear shaft (1) to the non-adjacent side of the tip perpendicular to its axis.

2. The method for measuring the mounting distance of a bevel gear according to claim 1, characterized in that: The limiting structure is a rectangular groove (501), with the other end of the top point being a corresponding rectangle.

3. The method for measuring the mounting distance of a bevel gear according to claim 1, characterized in that: The handwheel is located at the end of the handwheel rod (8) away from the tip, and the plane of the handwheel is perpendicular to the handwheel rod (8).

4. The method for measuring the mounting distance of a bevel gear according to claim 1, characterized in that: It also includes a base (11), and a support (5) is slidably disposed on the base (11), with the sliding direction parallel to the line connecting the support (5).

5. The method for measuring the mounting distance of a bevel gear according to claim 4, characterized in that: The base (11) is provided with a slide rail (1101), and the bottom of the support (5) is provided with a slider (503) corresponding to the slide rail (1101). The slider (503) is located inside the slide rail (1101).

6. The method for measuring the mounting distance of a bevel gear according to claim 5, characterized in that: A fixing plate (1102) is provided on one side of the slide rail (1101). The fixing plate (1102) has a long hole along the length of the slide rail (1101). A support fixing block (9) is provided between the fixing plate (1102) and the support (5). The support fixing block (9) has a fixing block screw hole (901). The threaded end of the bolt passes through the long hole and the fixing block screw hole (901) in sequence to connect to one side of the support (5).

7. The method for measuring the mounting distance of a bevel gear according to claim 6, characterized in that: The positioning sleeve (3) has a central hole (302) on the side with a larger diameter, and the corresponding tip is set inside the central hole (302).

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