CN212409571U - Odd number tooth external spline tooth root circle callipers rule - Google Patents
Odd number tooth external spline tooth root circle callipers rule Download PDFInfo
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- CN212409571U CN212409571U CN202020633809.9U CN202020633809U CN212409571U CN 212409571 U CN212409571 U CN 212409571U CN 202020633809 U CN202020633809 U CN 202020633809U CN 212409571 U CN212409571 U CN 212409571U
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Abstract
The utility model discloses an odd number tooth external splines tooth root circle calliper, tooth root circle calliper include the calliper main part, are equipped with logical end groove and only hold the groove in the calliper main part, are equipped with the logical end gauge head that three in being used for inserting the tooth's socket that corresponds on the external splines respectively on the internal face that leads to the end groove, are equipped with the only end gauge head that three is used for inserting in the external splines tooth's socket on only the internal face in end groove. The utility model discloses an odd number tooth external splines root circle calliper, during the detection, when the integral key shaft on the external splines can insert in leading to the end groove and can't insert when ending in the end groove, then explain the diameter meeting requirements of external splines root circle on this integral key shaft, otherwise then not meeting the requirements, whole testing process, easy operation, and easily judge the testing result, detection efficiency is high to simple structure can detect on the lathe.
Description
Technical Field
The utility model relates to a survey the utensil field, in particular to, relate to an odd number tooth external splines root of tooth circle calliper rule.
Background
The measurement of the diameter of the root circle of the external spline on the spline shaft is very important, and currently, the root circle of the external spline with even number of teeth is mostly detected by using a universal measuring tool such as a vernier caliper; the method has the advantages that the root circle of the external spline of the odd-numbered teeth cannot be directly measured, most of the measurements are converted and calculated after the root circle of the odd-numbered teeth is measured, image projection measuring equipment and a three-coordinate measuring machine are needed to be used for measurement, the measuring efficiency is low, the operating requirements on measuring personnel are very high, the measuring efficiency is very low, the measurements cannot be carried out on a machine tool, and the method is not suitable for batch detection.
SUMMERY OF THE UTILITY MODEL
The utility model provides an odd number tooth external splines root circle calliper to solve the measurement complex operation of current odd number tooth external splines root circle, technical problem that measurement of efficiency is low.
According to one aspect of the present invention, there is provided an odd-tooth external spline tooth root circle caliper for detecting whether a deviation between a diameter of an odd-tooth external spline tooth root circle on a spline shaft and a diameter of a standard external spline tooth root circle is within an allowable deviation range, the tooth root circle caliper comprising a caliper main body, a through end groove and a dead end groove being provided on the caliper main body, three through end probes being provided on an inner wall surface of the through end groove for being inserted into corresponding tooth grooves on an external spline respectively, a width of each through end probe being smaller than a width of an external spline tooth groove on the spline shaft to be detected, the three through end probes being distributed in a triangular shape and arranged at angles matching three tooth grooves on the external spline of the spline shaft, vertexes of the three through end probes being connected to form a first triangle, an outer center of the first triangle being located within the first triangle, center lines of the three through end probes being extended and then all intersecting with the outer center of the first triangle, the distance between the vertex of the through end measuring head and the outer center of the first triangle minus the maximum allowable upper deviation of the diameter of the standard external spline tooth root circle is smaller than or equal to the diameter of the external spline tooth root circle, and the distance between the inner wall surface of the through end groove and the outer center of the first triangle is larger than the diameter of the external spline tooth root circle; the inner wall surface of the end stopping groove is provided with three end stopping measuring heads which are used for being inserted into the tooth grooves of the external splines, the width of each end stopping measuring head is smaller than the width of the tooth grooves of the external splines on the spline shaft to be measured, the three end stopping measuring heads are distributed in a triangular shape and are distributed at angles matched with the three tooth grooves of the external splines on the spline shaft, vertex connecting lines of the three end stopping measuring heads form a second triangle, the outer center of the second triangle is located in the second triangle, the central lines of the three end stopping measuring heads are extended and then intersect at the outer center of the second triangle, the distance between the top end of each end stopping measuring head and the outer center of the second triangle is less than the maximum allowable lower deviation of the diameter of the standard tooth root circle of the external splines or larger than the diameter of the tooth root circle of the external splines, and the distance between the inner wall surface of the.
Further, the first triangle and the second triangle are isosceles acute triangles.
Furthermore, the included angle between the center lines of the two through end measuring heads positioned at the two bottom corners of the first triangle is equal to the included angle between the center lines of the two adjacent tooth sockets on the external spline; and the included angle between the center lines of the two end stop measuring heads positioned at the two bottom corners of the second triangle is equal to the included angle between the center lines of the two adjacent tooth sockets on the external spline.
Furthermore, lead to the end groove and end groove all locate on the terminal surface of calliper rule main part, lead to the end groove and be trilateral open slot structure.
Furthermore, the through end measuring head is positioned at the notch of the through end groove, and the end stopping measuring head is positioned at the notch of the end stopping groove.
Furthermore, the lead-through groove is arranged at the end face of the first end of the caliper gauge main body, the stop groove is arranged at the end face of the second end of the caliper gauge main body, the end face of the first end of the caliper gauge main body and the top face of the caliper gauge main body are in fillet transition, and the end face of the second end of the caliper gauge main body and the top face of the caliper gauge main body are in chamfer transition so as to identify the lead-through groove and the stop groove.
The utility model discloses following beneficial effect has:
the odd-number-tooth external spline tooth root circle caliper gauge of the utility model is characterized in that the caliper gauge main body is provided with a through end groove and a dead end groove; the three through end measuring heads are arranged in the through end groove, the arrangement angle of the three through end measuring heads is matched with the tooth grooves of the three external splines on the spline shaft, the outer center of the first triangle is located in the first triangle, the central lines of the three through end measuring heads all point to the outer center of the first triangle, the distance between the top end of the through end measuring heads and the outer center of the first triangle is minus the maximum allowable upper deviation that the diameter of the standard external spline tooth root circle is smaller than or equal to that of the external spline tooth root circle, the three end measuring heads are distributed in the second triangle and are arranged at the angle matched with the tooth grooves of the three external splines on the spline shaft, the outer center of the second triangle is located in the second triangle, the central lines of the three end measuring heads all point to the outer center of the second triangle, and the distance between the top end of the through end measuring heads and the outer center of the first triangle is minus the maximum allowable upper deviation that the diameter of the standard external spline tooth root circle is smaller than that the diameter of the external spline tooth root circle Deviation, wherein the distance between the inner wall surface of the through end groove and the outer center of the first triangle is larger than the diameter of the addendum circle of the external spline, and the distance between the inner wall surface of the end groove and the outer center of the second triangle is larger than the diameter of the addendum circle of the external spline, so that the influence on detection caused by interference due to the fact that the inner wall surfaces of the through end groove and the end groove face the insertion of the spline shaft is avoided; during measurement, if the spline shaft can be inserted into the through end groove and three through end measuring heads are respectively inserted into three external spline tooth grooves on the spline shaft, the maximum allowable upper deviation of the diameter of the external spline tooth root circle on the spline shaft minus the diameter of the standard external spline tooth root circle is smaller than or equal to the diameter of the external spline tooth root circle; if the spline shaft cannot be inserted into the end stopping groove so that the three end stopping measuring heads are respectively inserted into three external spline tooth grooves on the spline shaft, the maximum allowable lower deviation of the diameter of the external spline tooth root circle on the spline shaft minus the diameter of the standard external spline tooth root circle is larger than the diameter of the external spline tooth root circle is shown; and when the diameter of the external spline tooth root circle on the spline shaft minus the diameter of the standard external spline tooth root circle is smaller than the maximum allowable upper deviation and larger than the maximum allowable lower deviation, the diameter of the external spline tooth root circle on the spline shaft is qualified, so that when the external spline on the spline shaft can be inserted into the through end groove and cannot be inserted into the end stopping groove, the diameter of the external spline tooth root circle on the spline shaft is qualified, otherwise, the diameter of the external spline tooth root circle on the spline shaft is not qualified. The whole detection process is simple to operate, detection results are easy to judge, detection efficiency is high, the structure is simple, and detection can be carried out on a machine tool.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic structural view of a spline shaft according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of the odd-number tooth external spline tooth root circle caliper of the preferred embodiment of the present invention.
Illustration of the drawings:
1. a caliper body; 2. a through end slot; 21. a through end probe; 3. a dead end slot; 31. a stop end probe; 100. a spline shaft; 101. an external spline.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered below.
FIG. 1 is a schematic structural view of a spline shaft according to a preferred embodiment of the present invention; fig. 2 is a schematic structural diagram of the odd-number tooth external spline tooth root circle caliper of the preferred embodiment of the present invention.
As shown in fig. 1 and fig. 2, the odd-tooth external spline tooth root circle caliper of the present embodiment is used for detecting whether the deviation between the diameter of the tooth root circle of the odd-tooth external spline 101 on the spline shaft 100 and the diameter of the tooth root circle of the standard external spline 101 is within the allowable deviation range, the tooth root circle caliper comprises a caliper main body 1, a through end groove 2 and a dead end groove 3 are arranged on the caliper main body 1, three through end probes 21 for respectively inserting into the corresponding tooth grooves on the external spline 101 are arranged on the inner wall surface of the through end groove 2, the width of each through end probe 21 is smaller than the width of the tooth groove of the external spline 101 on the spline shaft 100 to be detected, the three through end probes 21 are distributed in a triangle shape and have a layout angle matched with the three tooth grooves on the external spline 101 of the spline shaft 100, the vertex connecting lines of the three through end probes 21 form a first triangle, the outer center of the first triangle is located in the first triangle, the center line of the three through end probes, the distance between the top point of the through end measuring head 21 and the outer center of the first triangle minus the maximum allowable upper deviation of the diameter of the standard tooth root circle of the external spline 101 is smaller than or equal to the diameter of the tooth root circle of the external spline 101, and the distance between the inner wall surface of the through end groove 2 and the outer center of the first triangle is larger than the diameter of the tooth root circle of the external spline 101; the inner wall surface of the end stopping groove 3 is provided with three end stopping measuring heads 31 which are used for being inserted into the tooth grooves of the external splines 101, the width of each end stopping measuring head 31 is smaller than the width of the tooth grooves of the external splines 101 on the spline shaft 100 to be measured, the three end stopping measuring heads 31 are distributed in a triangular shape and are arranged at angles matched with the three tooth grooves of the external splines 101 on the spline shaft 100, the top points of the three end stopping measuring heads 31 are connected to form a second triangle, the outer center of the second triangle is positioned in the second triangle, the central lines of the three end stopping measuring heads 31 are extended and then are intersected with the outer center of the second, and the distance between the top end of the end stop gauge 31 and the outer center of the second triangle minus the maximum allowable deviation that the diameter of the standard outer spline 101 root circle is greater than or equal to the diameter of the outer spline 101 root circle, and the distance between the inner wall surface of the end stop groove 3 and the outer center of the second triangle is greater than the diameter of the outer spline 101 root circle. When the spline shaft 100 can be inserted into the through end groove 2 and the three through end probes 21 are respectively inserted into the tooth grooves of the three external splines 101 on the spline shaft 100 during measurement, the maximum allowable upper deviation of the diameter of the root circle of the external spline 101 on the spline shaft 100 minus the diameter of the root circle of the standard external spline 101 is smaller than or equal to the diameter of the root circle of the external spline 101; if the spline shaft 100 cannot be inserted into the end-stop groove 3 so that the three end-stop probes 31 are inserted into the tooth grooves of the three external splines 101 on the spline shaft 100, the maximum allowable deviation of the diameter of the root circle of the external spline 101 on the spline shaft 100 minus the diameter of the root circle of the standard external spline 101 is greater than the diameter of the root circle of the external spline 101 is described; the diameter of the root circle of the external spline 101 on the spline shaft 100 minus the diameter of the root circle of the standard external spline 101 is qualified when the diameter is smaller than the maximum allowable upper deviation and larger than the maximum allowable lower deviation, so that when the external spline 101 on the spline shaft 100 can be inserted into the through end groove 2 and cannot be inserted into the end stop groove 3, the diameter of the root circle of the external spline 101 on the spline shaft 100 is qualified, otherwise, the diameter is not qualified. The whole detection process is simple to operate, detection results are easy to judge, detection efficiency is high, the structure is simple, and detection can be carried out on a machine tool. In this embodiment, the standard male spline 101 root circle has a diameter of 11.5mm, a maximum allowable upper deviation of 0mm, and a maximum allowable lower deviation of-0.22 mm. The distance between the through end probe 21 and the outer centre of the first triangle is 11.4815(+0.007, 0) mm. The distance between the end stop probe 31 and the new centroid of the second triangle is 11.28(+0.007, 0) mm.
As shown in fig. 2, the first triangle and the second triangle are isosceles acute triangles. The structure is more stable when the through-end measuring head 21 and the end-stop measuring head 31 are inserted into the tooth grooves of the three corresponding external splines 101, and the accuracy of the detection result is prevented from being influenced by the deviation of the caliper main body 1 and/or the spline shaft 100. The included angle between the center lines of the two through-end measuring heads 21 positioned at the two bottom angles of the first triangle is equal to the included angle between the center lines of the two adjacent tooth sockets on the external spline 101; the included angle between the center lines of the two end stop measuring heads 31 positioned at the two bottom corners of the second triangle is equal to the included angle between the center lines of the two adjacent tooth grooves on the external spline 101.
As shown in fig. 2, the through end groove 2 and the end stopping groove 3 are both arranged on the end surface of the caliper main body 1, and the through end groove 2 and the end stopping groove 3 are both of a three-side open groove structure. The three-sided open slot structure is beneficial to processing the through end slot 2 and the end stopping slot 3. In the present embodiment, the inner wall surfaces of the through groove 2 and the dead end groove 3 are both arc surfaces. The through end measuring head 21 is located at the notch of the through end groove 2, and the end stopping measuring head 31 is located at the notch of the end stopping groove 3, so that the through end measuring head 21 and the end stopping measuring head 31 can be machined conveniently. Lead to the terminal surface department that end groove 2 located the first end of caliber main part 1, end groove 3 locates the terminal surface department that caliber main part 1 second was held, and the terminal surface of the first end of caliber main part 1 and the top surface of caliber main part 1 are the fillet transition, and the terminal surface of caliber main part 1 second end and the top surface of caliber main part 1 are the chamfer transition to in order to discern leading to end groove 2 and end groove 3. Optionally, markings are provided next to the through-end slot 2 and next to the end-stop slot 3.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A caliper for detecting whether the deviation between the diameter of the root circle of an odd-tooth external spline (101) on a spline shaft (100) and the diameter of the root circle of a standard external spline (101) is within an allowable deviation range,
the tooth root circle caliper comprises a caliper main body (1), a through end groove (2) and a stop end groove (3) are arranged on the caliper main body (1),
the inner wall surface of the through end groove (2) is provided with three through end measuring heads (21) which are used for being respectively inserted into corresponding tooth grooves on the external spline (101), the width of each through end measuring head (21) is smaller than the width of the tooth groove of the external spline (101) on the spline shaft (100) to be measured, the three through end measuring heads (21) are distributed in a triangular shape, the arrangement angles of the three through end measuring heads are matched with the three tooth grooves on the external spline (101) of the spline shaft (100), the top points of the three through end measuring heads (21) are connected to form a first triangle, the outer center of the first triangle is located in the first triangle, the central lines of the three through end measuring heads (21) are intersected with the outer center of the first triangle after being extended, the distance between the top point of each through end measuring head (21) and the outer center of the first triangle minus the maximum allowable upper deviation of the diameter of the tooth root circle of the standard external spline (101) which is smaller than or equal to the diameter of the tooth root circle of the external spline (101), and the distance between the inner The diameter of the circle;
three end-stopping measuring heads (31) which are used for being inserted into tooth grooves of the external splines (101) are arranged on the inner wall surface of the end-stopping groove (3), the width of each end-stopping measuring head (31) is smaller than the width of the tooth grooves of the external splines (101) on the spline shaft (100) to be measured, the three end-stopping measuring heads (31) are distributed in a triangular shape, the distribution angles of the three end-stopping measuring heads are matched with the three tooth grooves of the external splines (101) on the spline shaft (100), the top points of the three end-stopping measuring heads (31) are connected to form a second triangle, the outer center of the second triangle is positioned in the second triangle, the central lines of the three end-stopping measuring heads (31), and the distance between the top end of the end stop measuring head (31) and the outer center of the second triangle minus the maximum allowable lower deviation of the diameter of the tooth root circle of the standard external spline (101) is larger than or equal to the diameter of the tooth root circle of the external spline (101), and the distance between the inner wall surface of the end stop groove (3) and the outer center of the second triangle is larger than the diameter of the tooth top circle of the external spline (101).
2. The odd-tooth external spline tooth root circle caliper of claim 1,
the first triangle and the second triangle are isosceles acute triangles.
3. The odd-tooth external spline tooth root circle caliper of claim 2,
the included angle between the center lines of the two through end measuring heads (21) positioned at the two bottom corners of the first triangle is equal to the included angle between the center lines of the two adjacent tooth sockets on the external spline (101);
the included angle between the center lines of the two end stop measuring heads (31) positioned at the two bottom corners of the second triangle is equal to the included angle between the center lines of the two adjacent tooth grooves on the external spline (101).
4. The odd-tooth external spline tooth root circle caliper of claim 1,
the through end groove (2) and the end stopping groove (3) are both arranged on the end face of the caliper main body (1), and the through end groove (2) and the end stopping groove (3) are of a three-side open groove structure.
5. The odd-tooth external spline tooth root circle caliper of claim 4,
the through end measuring head (21) is positioned at the notch of the through end groove (2), and the end stopping measuring head (31) is positioned at the notch of the end stopping groove (3).
6. The odd-tooth external spline tooth root circle caliper of claim 4,
lead to the terminal surface department that end groove (2) were located the first end of calliper rule main part (1), end groove (3) and locate the terminal surface department that calliper rule main part (1) second was held, the terminal surface of the first end of calliper rule main part (1) and the top surface of calliper rule main part (1) are the fillet transition, the terminal surface of calliper rule main part (1) second end and the top surface of calliper rule main part (1) are the chamfer transition to in order to lead to end groove (2) and end groove (3) and discern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020633809.9U CN212409571U (en) | 2020-04-23 | 2020-04-23 | Odd number tooth external spline tooth root circle callipers rule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020633809.9U CN212409571U (en) | 2020-04-23 | 2020-04-23 | Odd number tooth external spline tooth root circle callipers rule |
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| Publication Number | Publication Date |
|---|---|
| CN212409571U true CN212409571U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020633809.9U Active CN212409571U (en) | 2020-04-23 | 2020-04-23 | Odd number tooth external spline tooth root circle callipers rule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212409571U (en) |
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2020
- 2020-04-23 CN CN202020633809.9U patent/CN212409571U/en active Active
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Address after: 412000 No. 1018, Hangfei Avenue, Lusong District, Zhuzhou City, Hunan Province Patentee after: Hunan Xingtu Aerospace and Spacecraft Manufacturing Co.,Ltd. Address before: Dong Jiaduan 412002 in Hunan province Zhuzhou city Lusong District Patentee before: AVIC POWER ZHUZHOU AVIATION PARTS MANUFACTURING Co.,Ltd. |