Bevel gear inner hole arc chamfer depth measuring tool

Abstract

The utility model relates to the technical field of measuring tools, and provides a bevel gear inner hole arc chamfer depth measuring tool. The device comprises a positioner and a sliding rod, the positioner comprises a contact hopper and a contact block, the contact hopper is a cone, the angle of the conical surface of the contact hopper is 45 degrees, the contact block is a cylinder and is arranged at the tip end of the contact hopper, the bottom surface of the contact block is flush with the vertex of the conical surface of the contact hopper, and the top surface of the contact block is integrally formed and connected with the contact hopper; a graduated scale is arranged on the sliding rod, and the positioner is assembled on the sliding rod in a manner that the conical surface downwards slides; the positioner slides on the sliding rod, so that the conical surface of the contact hopper abuts against an inner hole arc chamfer on the bevel gear, and the bottom surface of the contact block abuts against the surface of an inner hole in the bevel gear; according to the bevel gear inner hole arc chamfer depth measuring tool, the position change of the positioner can be realized, the inner hole arc chamfer can be measured by combining the inner hole size, and the measurement can be completed without finding the edge of the arc chamfer.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, in particular to a measuring tool for the depth of circular arc chamfering of an inner hole of a bevel gear. Background Art

[0002] The purpose of chamfering the internal holes of bevel gears is to improve the gear's machining quality and performance. This reduces stress concentration caused by sharp edges during use, lowering wear and extending the gear's life. The chamfer also provides guidance during assembly onto the shaft.

[0003] In the existing technology, because the edge of the arc chamfer is difficult to determine, it is difficult to measure the depth of the arc chamfer and difficult to judge whether the arc chamfer is processed in place, which affects the integrity of quality inspection and leads to potential risks. Utility Model Content

[0004] The purpose of the utility model is to provide a bevel gear inner hole circular arc chamfer depth measuring tool, which can change the position of the locator and calculate the inner hole circular arc chamfer in combination with the inner hole size, and can complete the measurement without finding the edge of the circular arc chamfer.

[0005] The utility model provides a bevel gear inner hole circular arc chamfer depth measuring tool, comprising:

[0006] The positioner includes a contact bucket and a contact block. The contact bucket is conical, and the angle of the contact bucket cone is 45 degrees. The contact block is cylindrical and is arranged at the tip of the contact bucket. The bottom surface of the contact block is flush with the top of the contact bucket cone surface. The top surface of the contact block is integrally formed and connected to the contact bucket.

[0007] A slide rod is arranged in a vertical direction and is provided with a scale. The conical surface of the locator slides downward and is assembled on the slide rod;

[0008] The positioner slides on the slide rod so that the contact bucket cone surface contacts the inner hole arc chamfer on the bevel gear, and the bottom surface of the contact block contacts the surface where the inner hole on the bevel gear is located;

[0009] The sliding distance of the positioner on the slide rod is a, and the radius of the inner hole of the bevel gear is b.

[0010] Preferably, the positioner further comprises an extension block, wherein the extension block is fixedly connected to the bottom surface of the contact block, and in a working state, the extension block replaces the contact block to contact the surface where the inner hole is located.

[0011] Preferably, there are two scales on the sliding rod, the two scales are offset up and down, and the offset distance is the same as the height of the extension block.

[0012] Preferably, the contact bucket cone angle is 60 degrees.

[0013] Preferably, the positioner comprises a first sliding block and a positioning rod, the first sliding block is slidingly assembled on the slide rod, one end of the positioning rod is rotationally connected with the first sliding block, and the positioning rod is uniformly arranged around the first sliding block; the positioning rod is in different angles with the slide rod by rotation, all the positioning rods simultaneously abut against the inner hole circular arc chamfer of the bevel gear, and the first sliding block slides on the slide rod, so that the included angle between the positioning rod and the slide rod changes.

[0014] Preferably, a second sliding block is slidingly assembled on the first sliding block, a connecting rod is uniformly assembled around the second sliding block, the number of the connecting rod is same as that of the positioning rod, and two ends of each connecting rod are rotationally connected with the second sliding block and one positioning rod respectively.

[0015] Preferably, a positioning bead is embedded on the first sliding block, and the number of the positioning bead is at least two; each positioning bead is used for positioning the positioning rod and the slide rod in a fixed angle by positioning the second sliding block.

[0016] Preferably, the number of the scales on the slide rod is same as that of the positioning bead, the scales are offset up and down, and the offset distance is same as the height change amount of the intersection points between the positioning rods caused by rotation of the positioning rods when the second sliding block is positioned at different positions by the positioning bead.

[0017] Preferably, the inner hole circular arc chamfer depth gauge further comprises a positioning support, and the slide rod is fixedly assembled on the positioning support in a height-adjustable mode.

[0018] Preferably, the positioning support comprises a fixed base plate and a lifting support, the lifting support is fixedly assembled on the fixed base plate, the fixed base plate is used for placing the bevel gear, and the lifting support is used for lifting the top end of the slide rod.

[0019] The technical scheme of the utility model judges the position condition of the positioner through the scales on the slide rod, obtains the contact bucket theoretical sliding distance when there is no chamfer in combination with the surface abutted by the contact block and the inner hole size, compares the actual sliding distance of the contact bucket to the inner hole circular arc chamfer, obtains the additional sliding distance caused by the existence of the hole circular arc chamfer, calculates the radius of the inner hole circular arc chamfer, and finally obtains the depth of the inner hole circular arc chamfer. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is a front view of the bevel gear inner hole arc chamfer depth gauge of the present application;

[0022] Figure 2 It is an axonometric view of the bevel gear inner hole arc chamfer depth gauge of the present application;

[0023] Figure 3 It is Figure 2 It is an axonometric view of the bevel gear inner hole arc chamfer depth gauge of the present application;

[0024] Figure 4 It is Figure 2 It is an axonometric view of the bevel gear inner hole arc chamfer depth gauge of the present application;

[0025] Figure 5 It is Figure 1 It is an assembly view of the positioning bead in the bevel gear inner hole arc chamfer depth gauge of the present application;

[0026] Figure 6 It is Figure 1 It is a simplified view of the operation of the positioning device in the bevel gear inner hole arc chamfer depth gauge of the present application.

[0027] Explanation of reference signs:

[0028] 1, positioning device; 11, contact bucket; 12, contact block; 13, extension block; 14, first sliding block; 15, positioning rod; 16, second sliding block; 17, positioning bead; 2, sliding rod; 3, positioning support; 31, fixed base plate, 32, hoisting support. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described below in conjunction with embodiments, and obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] In the description of the utility model, need understanding is, the term "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and so on indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation of the utility model.

[0031] In the description of the utility model, need understanding is, the term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Combined with Figures 1 to 6 As shown in the utility model, a bevel gear inner hole arc chamfer depth gauge includes positioner 1 and slide rod 2.

[0033] Combined with Figures 1 to 6 As shown in the utility model, the positioner 1 includes contact bucket 11 and contact block 12, the contact bucket 11 is a cone, the contact bucket 11 cone angle is 45 degrees, the contact block 12 is a cylinder and is arranged at the tip of the contact bucket 11, the bottom surface of the contact block 12 and the vertex of the contact bucket 11 cone are flush, and the top surface of the contact block 12 is integrally connected with the contact bucket 11, the slide rod 2 is vertically arranged, the slide rod 2 is provided with a scale, and the positioner 1 cone is downwardly assembled on the slide rod 2, the positioner 1 is slid on the slide rod 2, so that the contact bucket 11 cone is in contact with the bevel gear inner hole arc chamfer, and the bottom surface of the contact block 12 is in contact with the surface where the bevel gear inner hole is located, the sliding distance of the positioner 1 on the slide rod 2 is a, and the bevel gear inner hole radius is b,

[0034] In this embodiment, the position of the positioner 1 is determined by the scale on the slide bar 2, and the theoretical sliding distance of the contact bucket 11 without chamfer is obtained by combining the contact between the contact block 12 and the surface where the inner hole is located and the size of the inner hole. By comparing the actual sliding distance of the contact bucket 11 to the chamfered arc of the inner hole, the additional sliding distance caused by the chamfered arc of the inner hole is obtained, and thus the radius of the chamfered arc of the inner hole is calculated, and finally the depth of the chamfered arc of the inner hole is obtained.

[0035] In some embodiments, in combination Figure 1 As shown, the positioner 1 further includes an extension block 13 fixedly connected to the bottom surface of the contact block 12. In the working state, the extension block 13 replaces the contact block 12 to contact the surface where the inner hole is located. However, the surface where the inner hole is located is generally a sunken surface. By extending the contact block 12 through the extension block 13, the contact between the contact bucket 11 and the bevel gear can be avoided.

[0036] In some embodiments, in combination Figure 1 As shown, the number of scales on the slide bar 2 is two, and the two scales are offset up and down, and the offset distance is the same as the height of the extension block 13. The existence of the extension block 13 will affect the sliding distance of the positioner 1 on the slide bar 2. By increasing the number of scales, the influence of the extension block 13 on the sliding distance of the positioner 1 can be quickly excluded.

[0037] In some embodiments, in combination Figure 1 As shown, the angle of the taper surface of the contact bucket 11 is 60 degrees. When the angle of the taper surface of the contact bucket 11 changes, the relationship between the radius of the chamfered arc of the inner hole of the bevel gear and a and b will also change. However, as long as the angle of the taper surface of the contact bucket 11 is fixed, the radius of the chamfered arc of the inner hole of the bevel gear can be calculated through a and b. The angle of the taper surface of the contact bucket 11 being 60 degrees is another example.

[0038] In some embodiments, in combination Figure 2 As shown, the positioner 1 includes a first sliding block 14 and a positioning rod 15. The first sliding block 14 is slidingly assembled on the slide bar 2. One end of the positioning rod 15 is rotatably connected to the first sliding block 14, and the positioning rod 15 is uniformly arranged around the first sliding block 14. The positioning rod 15 is rotatable to present different angles with the slide bar 2. All the positioning rods 15 simultaneously contact the chamfered arc of the inner hole of the bevel gear. The first sliding block 14 slides on the slide bar 2, causing the angle between the positioning rod 15 and the slide bar 2 to change.

[0039] In this embodiment, the positioning rod 15 is rotated to present a horizontal position and an upward inclination of 45 degrees, respectively, so that the positioning rod 15 can replace the taper surface of the contact bucket 11 and the bottom surface of the contact block 12 for positioning, respectively. The sliding distance of the first sliding block 14 on the slide bar 2 and the radius of the inner hole of the bevel gear during this process can be used to calculate the radius of the chamfered arc of the inner hole of the bevel gear.

[0040] In some embodiments, as shown in Figure 3 , Figure 4 The first slider 14 is slidably assembled with a second slider 16, and a plurality of connecting rods are uniformly assembled around the second slider 16. The number of connecting rods is the same as that of the positioning rods 15. The two ends of each connecting rod are rotatably connected to the second slider 16 and one of the positioning rods 15, respectively. The angle of the positioning rod 15 can be quickly controlled by sliding the second slider 16, effectively increasing the convenience of use.

[0041] In some embodiments, as shown in Figure 5 The first slider 14 is embedded with a plurality of positioning beads 17, and the number of positioning beads 17 is at least two. Each of the positioning beads 17 positions the positioning rod 15 and the slide rod 2 at a fixed angle by positioning the second slider 16. The positioning of the second slider 16 by the positioning bead 17 can effectively improve the use experience and avoid the sliding of the second slider 16 under the action of gravity and other external forces, thereby affecting the measurement results.

[0042] In some embodiments, as shown in Figure 5 The number of scales on the slide rod 2 is the same as that of the positioning beads 17. The scales are offset up and down, and the offset distance is the same as the height change of the intersection points between the positioning rods 15 caused by the rotation of the positioning rods 15 when the second slider 16 is clamped at different positions by the positioning beads 17. During the rotation of the positioning rod 15 on the first slider 14, the rotation axis does not coincide with all the intersection points of the positioning rods 15. During the rotation of the positioning rod 15, the positions of all the intersection points of the positioning rods 15 will be offset downward. The up and down offset between the scales can compensate for this, simplifying the measurement process.

[0043] In some embodiments, as shown in Figure 1 The bevel gear inner hole arc chamfer depth gauge further comprises a positioning support 3. The height of the slide rod 2 is adjustable and fixedly assembled on the positioning support 3. The slide rod 2 is supported by the positioning support 3. By adjusting the height of the slide rod 2, the position of the zero point of the scale on the support 3 can be controlled, thereby simplifying the measurement process.

[0044] In some embodiments, as shown in Figure 2 The positioning support 3 comprises a fixed base plate 31 and a lifting support 32. The lifting support 32 is fixedly assembled on the fixed base plate 31. The fixed base plate 31 places the bevel gear. The lifting support 32 lifts the top end of the slide rod 2. The fixed base plate 31 can ensure that the bevel gear is placed flat. The fixed base plate 31 and the lifting support 32 cooperate to improve the stability of the relative position between the slide rod 2 and the bevel gear, ensuring the accuracy and stability of the final measurement results.

[0045] Working process: firstly, the bottom surface of the contact block 12 is used to contact the surface where the inner hole is located, at this time the vertex of the taper surface of the contact bucket 11 is also flush with the surface where the inner hole is located, and the position of the positioner 1 on the slide rod 2 at this time is recorded; then the positioner 1 is lowered to use the taper surface of the contact bucket 11 to contact the inner hole arc chamfer on the bevel gear, and the position of the positioner 1 on the slide rod 2 is recorded again; the theoretical downward distance when there is no chamfer can be obtained through the inner hole size and the angle of the taper surface of the contact bucket 11, the actual downward distance can be obtained through the two recorded positions of the positioner 1, the difference between the two is the additional downward distance caused by the existence of the inner hole arc chamfer, and the additional downward distance combined with the angle of the taper surface of the contact bucket 11 can obtain the radius of the inner hole arc chamfer, so as to measure the depth of the inner hole arc chamfer.

[0046] Taking the taper angle of the contact bucket 11 as 45 degrees as an example, the additional downward distance multiplied by sin45° obtains the sinking amount perpendicular to the taper surface, this part of the sinking amount is caused by machining the inner hole arc chamfer, and the sinking amount perpendicular to the taper surface is equal to the radius of the inner hole arc chamfer times The radius of the inner hole arc chamfer is equal to the depth of the inner hole arc chamfer.

[0047] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bevel gear inner hole arc chamfer depth measuring tool, characterized in that: include: A positioner (1), the positioner (1) comprising a contact bucket (11) and a contact block (12), the contact bucket (11) being a cone, the angle of the contact bucket (11) being 45 degrees, the contact block (12) being a column and being arranged at the tip of the contact bucket (11), the bottom surface of the contact block (12) being flush with the vertex of the contact bucket (11) conical surface, and the top surface of the contact block (12) being integrally formed and connected to the contact bucket (11); A slide bar (2), the slide bar (2) is arranged in a vertical direction, a scale is provided on the slide bar (2), and the locator (1) is assembled on the slide bar (2) with its conical surface sliding downward; The positioner (1) slides on the slide bar (2) so that the conical surface of the contact bucket (11) contacts the arc chamfer of the inner hole on the bevel gear, and the bottom surface of the contact block (12) contacts the surface where the inner hole on the bevel gear is located; The sliding distance of the positioner (1) on the slide bar (2) is a, and the radius of the inner hole of the bevel gear is b.

2. The bevel gear inner hole arc chamfer depth measuring tool according to claim 1, characterized in that: The positioner (1) further comprises an extension block (13), wherein the extension block (13) is fixedly connected to the bottom surface of the contact block (12); in a working state, the extension block (13) replaces the contact block (12) to contact the surface where the inner hole is located.

3. The bevel gear inner hole arc chamfer depth measuring tool according to claim 2, characterized in that: There are two scales on the slide bar (2), and the two scales are offset up and down, and the offset distance is the same as the height of the extension block (13).

4. The bevel gear inner hole arc chamfer depth measuring tool according to claim 1, characterized in that: The contact bucket (11) has a cone angle of 60 degrees.

5. The bevel gear inner hole arc chamfer depth measuring tool according to claim 1, characterized in that: The positioner (1) comprises a first slider (14) and a positioning rod (15), wherein the first slider (14) is slidably assembled on the slide rod (2), one end of the positioning rod (15) is rotatably connected to the first slider (14), and the positioning rod (15) is evenly arranged around the first slider (14); The positioning rods (15) present different angles with the slide rod (2) by rotating, and all the positioning rods (15) simultaneously abut against the circular arc chamfer of the inner hole of the bevel gear, and the first slider (14) slides on the slide rod (2), causing the angle between the positioning rods (15) and the slide rod (2) to change.

6. The bevel gear inner hole arc chamfer depth measuring tool according to claim 5, characterized in that: A second slider (16) is slidably mounted on the first slider (14), and connecting rods are evenly mounted around the second slider (16). The number of the connecting rods is the same as the number of the positioning rods (15), and the two ends of each connecting rod are respectively rotatably connected to the second slider (16) and one of the positioning rods (15).

7. The bevel gear inner hole arc chamfer depth measuring tool according to claim 6, characterized in that: A positioning bead (17) is embedded in the first slider (14), and the number of the positioning beads (17) is at least two. Each positioning bead (17) positions the second slider (16) so that the positioning rod (15) and the slide rod (2) present a fixed angle.

8. The bevel gear inner hole arc chamfer depth measuring tool according to claim 7, characterized in that: The number of scales on the slide bar (2) is the same as the number of positioning beads (17), the scales are offset up and down, and the offset distance is the same as the height change amount of the intersection between the positioning bars (15) caused by the rotation of the positioning bars (15) when the second slider (16) is stuck in different positions by the positioning beads (17).

9. The bevel gear inner hole arc chamfer depth measuring tool according to claim 1, characterized in that: It also includes a positioning bracket (3), and the sliding rod (2) is fixedly assembled on the positioning bracket (3) in an adjustable height.

10. The bevel gear inner hole arc chamfer depth measuring tool according to claim 9, characterized in that: The positioning bracket (3) comprises a fixed chassis (31) and a hanging bracket (32), wherein the hanging bracket (32) is fixedly assembled on the fixed chassis (31), a bevel gear is placed on the fixed chassis (31), and the hanging bracket (32) hangs the top end of the slide bar (2).

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