CN210664302U - Internal spline coaxiality inspection device and inspection mandrel thereof - Google Patents
Internal spline coaxiality inspection device and inspection mandrel thereof Download PDFInfo
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- CN210664302U CN210664302U CN201921599395.6U CN201921599395U CN210664302U CN 210664302 U CN210664302 U CN 210664302U CN 201921599395 U CN201921599395 U CN 201921599395U CN 210664302 U CN210664302 U CN 210664302U
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Abstract
The utility model relates to an internal spline axiality verifying attachment and inspection dabber thereof. The inspection mandrel comprises a long-strip-shaped shaft body and an inspection external spline. The shaft body includes a first end and a second end opposite to the first end. The verification external spline includes a plurality of splines. The plurality of key teeth are arranged on the shaft body at intervals along the circumferential direction of the shaft body. The tooth thickness of each of the key teeth increases in a direction from the first end toward the second end. Because the tooth thickness of each key tooth in the inspection external spline increases gradually along the direction that first end point to the second end, so when the inspection internal spline axiality is inspected, the inspection dabber of a specification can be simultaneously inspected to the multiple axle type internal spline work piece of different tooth thicknesses. Therefore, the inspection mandrel is high in applicability, and further the applicability of the internal spline coaxiality inspection device is high.
Description
Technical Field
The utility model relates to a part detects technical field, especially relates to an internal spline axiality verifying attachment and inspection dabber thereof.
Background
With the continuous development of the manufacturing industry, internal spline workpieces are used on more and more products, for example, a primary input shaft in an energy reduction box is in transmission connection with a motor shaft by adopting an internal spline. In the process of machining the inner spline of the shaft type inner spline workpiece, the problem of tooth direction deviation caused by deformation of the inner spline is likely to occur, so that the coaxiality error between the inner spline and the outer circles at two ends of the shaft type inner spline workpiece is an important proper control index.
The coaxiality of the internal splines is usually tested by inserting a testing mandrel into a shaft type internal spline workpiece. At present, the adopted coaxiality inspection scheme is that a shaft type internal spline workpiece with a size specification corresponds to an inspection mandrel.
However, in the one-to-one coaxiality inspection scheme, when the coaxiality inspection is performed on the internal splines with different tooth thicknesses, different inspection mandrels need to be replaced. Therefore, the applicability of the conventional internal spline inspection mandrel is not high.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an internal spline coaxiality inspection device with high applicability and an inspection mandrel thereof for solving the problem that the conventional internal spline mandrel is not high in applicability.
A checking mandrel comprising:
the shaft body is in a strip shape and comprises a first end and a second end opposite to the first end; and
the inspection external spline comprises a plurality of key teeth, the plurality of key teeth are arranged on the shaft body at intervals along the circumferential direction of the shaft body, and the tooth thickness of each key tooth is gradually increased along the direction from the first end to the second end.
In one embodiment, the shaft body is a cylindrical shaft.
In one embodiment, the surface of the first end or the second end is provided with a hanging hole penetrating through the shaft body.
In one embodiment, a first mark groove is formed in one end, close to the first end, of the inspection external spline along the circumferential direction of the shaft body, a second mark groove is formed in one end, close to the second end, of the inspection external spline along the circumferential direction of the shaft body, and the first mark groove and the second mark groove are arranged at intervals in the axial direction of the shaft body.
In one embodiment, the outer wall of the first end is provided with a parameter identifier of the inspection mandrel.
In one embodiment, the shaft end surface of the first end and the shaft end surface of the second end are both provided with a supporting groove, and the two supporting grooves and the shaft body are coaxially arranged.
In one embodiment, the key teeth have a taper ratio of 500:1 to 2000: 1.
In one embodiment, the key teeth have a taper ratio of 1000: 1.
An internal spline coaxiality inspection device, comprising:
the support has a supporting function and comprises a base with a measuring station and a supporting frame arranged on the base, and an installation part is arranged at the position of the supporting frame opposite to the measuring station;
the clamping assembly is arranged at the measuring station and comprises a first tip and a second tip, the first tip and the second tip are arranged oppositely and coaxially, and the first tip can slide along the connecting line direction of the first tip and the second tip;
the two ends of the inspection mandrel are respectively abutted against the first tip and the second tip; and
the measuring part is arranged on the mounting part and comprises a measuring head which is telescopic in the connecting line direction of the mounting part and the measuring station;
the supporting frame can slide along the connecting line direction of the first tip and the second tip.
In one embodiment, the measuring member is a dial gauge.
Above-mentioned internal spline axiality verifying attachment and inspection dabber before carrying out the axiality inspection to the internal spline in the internal spline work piece of class, need wear to locate in the internal spline work piece of axle type earlier with the inspection dabber to this judges whether the internal spline satisfies the design requirement. Because the tooth thickness of each key tooth in the inspection external spline increases gradually along the direction that first end point to the second end, so when the inspection internal spline axiality is inspected, the inspection dabber of a specification can be simultaneously inspected to the multiple axle type internal spline work piece of different tooth thicknesses. Therefore, the inspection mandrel is high in applicability, and further the applicability of the internal spline coaxiality inspection device is high.
Drawings
Fig. 1 is a schematic structural view of an internal spline coaxiality inspection device according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a checking mandrel in the internal spline coaxiality checking device shown in fig. 1.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the present invention provides an internal spline coaxiality inspection device 10 and an inspection mandrel 200 thereof. The internal spline coaxiality inspection device 10 is mainly used for inspecting the coaxiality of the internal splines in the shaft-type internal spline workpiece 20. The internal spline coaxiality testing device 10 comprises a bracket (not shown), a clamping assembly 100, a testing mandrel 200 and a measuring part 300.
The support comprises a base with a measuring station and a supporting frame arranged on the base. The support frame is provided with an installation part at a position opposite to the measuring station. The measuring station is a position on the base for measuring the coaxiality of the internal splines in the shaft-like internal spline workpiece 20, and is a working area. The bracket mainly plays a supporting role and is usually made of stainless steel, alloy steel, cast iron and other materials with higher strength so as to enable the bracket to have higher bearing capacity.
The clamping assembly 100 is mounted at a measurement station. The clamping assembly 100 includes a first point 110 and a second point 120. The first point 110 and the second point 120 are arranged oppositely and coaxially. The first point 110 is slidable along a direction connecting the first point 110 and the second point 120. Thereby, by adjusting the position of the first tip 110 on the measuring station, the distance between the first tip 110 and the second tip 120 can be achieved.
The first and second apexes 110 and 120 abut against both ends of the inspection mandrel 200. Thus, the connecting line direction of the first point 110 and the second point 120 is the axial direction of the inspection mandrel 200. When the coaxiality of the internal splines needs to be checked, the shaft-type internal spline workpiece 20 needs to be sleeved on the checking mandrel 200, the first tip 110 is made to move in the direction towards the second tip 120 until the end part of the shaft-type internal spline workpiece of the first tip 120 is grounded, and the clamping work of the checking mandrel 200 and the shaft-type internal spline workpiece 20 on the internal spline coaxiality checking device 10 can be achieved.
The measuring member 300 is disposed on the mounting portion. The measuring unit 300 includes a measuring head 310 that is extendable and retractable in a direction of a line connecting the mounting portion and the measuring station. Therefore, when the internal spline coaxiality inspection device 10 is located in the horizontal plane, the measuring head 310 is retractable in the vertical direction. In the actual use process, the measuring head 310 extends out to abut against the outer surface of the shaft-type inner spline workpiece 20 along the direction of the mounting portion pointing to the measuring station, so as to measure the circumferential runout value of the shaft-type inner spline workpiece 20. The measuring member 300 may be a dial gauge, or the like.
In this embodiment, the measuring member 300 is a dial gauge. The dial indicator is used as a general length measuring tool of a meter type supported by a compact rack and pinion mechanism, has the characteristics of simple layout, small overall dimension, light weight, convenient operation and the like, and the measuring piece 300 is set as the dial indicator, so that the measuring piece 300 also has the advantages of small overall dimension, light weight, convenient operation and the like.
The support frame is slidable along the direction of the connection line of the first tip 110 and the second tip 120. Thereby, the measuring tool 300 attached to the attachment portion is also slidable in the direction of connecting the first center 110 and the second center 120. In the actual use process, the measuring part 300 is moved to measure the circumferential runout values of different positions on the shaft-type internal spline workpiece 20, and the difference between the circumferential runout values is calculated to obtain the coaxiality of the internal splines in the shaft-type internal spline workpiece 20.
Referring to fig. 2, the inspection mandrel 200 according to the preferred embodiment of the present invention includes a shaft body 210 and an inspection male spline 220.
The shaft body 210 has a long bar shape. The shaft body 210 has a first end 211 and a second end 212 opposite the first end 211. The shaft body 210 mainly serves as a support and is generally made of a strong material such as stainless steel, carbon steel, and alloy steel. The radial sectional shape of the shaft body 210 may be a circular, rectangular, polygonal line, or the like, which is centrosymmetric.
In the present embodiment, the shaft body 210 is a cylindrical shaft. The shaft type inner spline workpiece 20 is provided with an inner hole for setting an inner spline, and in practical application, the inner hole on the shaft type inner spline workpiece 20 is set to be a round hole more frequently. The shaft body 210 is a cylindrical shaft, so that the process of inserting the inspection mandrel 200 into the shaft-like internal spline workpiece 20 is smoother. Therefore, providing the shaft body 210 as a cylindrical shaft can improve the applicability of the inspection mandrel 200.
In the present embodiment, the axial end surface of the first end 211 and the axial end surface of the second end 212 are both provided with a supporting groove 213. The two supporting grooves 213 are disposed coaxially with the shaft body 210. When the checking mandrel 200 is clamped on the internal spline coaxiality checking device 10, the first center 110 and the second center 120 respectively abut against the abutting grooves 213 at the two ends of the shaft body 210. Because the two propping grooves 213 and the shaft body 210 are coaxially arranged, the first tip 110, the second tip 120 and the shaft body 210 can be ensured to be coaxially arranged. The arrangement of the propping groove 213 not only makes the inspection mandrel 200 clamped between the first center 110 and the second center 120 more stable, but also omits the step of alignment in the process of clamping the inspection mandrel 200, greatly simplifies the clamping process of the inspection mandrel 200, and thus makes the use of the internal spline coaxiality inspection device 10 simpler.
In this embodiment, the surface of the first end 211 or the second end 212 is provided with a hanging hole 214 penetrating the shaft body 210. To facilitate collection and management of the inspection mandrels 200 when the inspection mandrels 200 are in an unused state, the inspection row mandrels may be hung up through hang holes 214 in the locations where the inspection mandrels 200 are collected. Thus, the provision of the hanging holes 214 facilitates the collection and management of the inspection mandrels 200.
The verification male spline 220 includes a plurality of key teeth 221. A plurality of key teeth 221 are provided on the shaft body 210 at intervals in the circumferential direction of the shaft body 210. The tooth thickness of each of the key teeth 221 gradually increases in a direction from the first end 211 toward the second end 212. Thus, the tooth thickness of each of the key teeth 221 in the verification male spline 220 is incrementally increased in a direction from the first end 211 toward the second end 212.
Therefore, when the coaxiality of the internal splines is tested, the testing mandrel 200 with one specification can be used for simultaneously testing various shaft-type internal spline workpieces 20 with different tooth thicknesses, so that the testing mandrel 200 has high applicability.
The working process of the internal spline coaxiality inspection device 10 is as follows:
(1) the inspection mandrel 200 is arranged in the shaft type internal spline workpiece 20 in a penetrating mode, and the inspection external splines 220 are completely clamped with the internal splines in the shaft type internal spline workpiece 20;
(2) abutting one end of the inspection mandrel 200 against the second apex 120, and sliding the first apex 110 in the direction towards the second apex 120 until the first apex 110 abuts against one end of the inspection mandrel 200 away from the second apex 120, so that the inspection mandrel 200 is connected with the shaft-like inner spline workpiece 20 and clamped on the inner spline coaxiality inspection device 10;
(3) adjusting the position of the measuring part 300 to enable the measuring head 310 to be abutted against the end face, far away from the inner spline, of the shaft-type inner spline workpiece 20, and lightly knocking the outer wall, far away from one end of the inner spline, of the shaft-type inner spline workpiece 20 by using knocking tools such as a copper bar and the like until a measured value obtained by the measuring part 300 reaches a preset range (when the measuring part 300 is a dial indicator, the preset range is a value smaller than 0.01), so as to ensure the parallelism between the axis of the shaft-type inner spline workpiece 20 and the axis of the inspection mandrel 200;
(4) moving the measuring part 300 until the measuring head 310 abuts against the outer surface of the part of the shaft type internal spline workpiece 20 provided with the internal splines, and then rotating the inspection mandrel 200 to obtain a circumferential runout value of the shaft type internal spline workpiece 20 at the part provided with the internal splines;
(5) moving the measuring part 300 until the measuring head 310 abuts against the outer surface of the shaft-type inner spline workpiece 20 close to the end part of the first end 211 and the outer surfaces of other positions of the shaft-type inner spline workpiece 20, and respectively rotating the inspection mandrel 200 to obtain circumferential run-out values of the end part of the shaft-type inner spline workpiece 20 close to the first end 211 and other positions of the shaft-type inner spline workpiece 20;
(6) and (5) calculating the difference between all the circumferential runout values obtained in the step (4) and the step (5) to obtain the coaxiality of the inner splines in the shaft-type inner spline workpiece 20.
In the internal spline coaxiality inspection device 10, before the circumference movement value of the shaft type internal spline workpiece 20 is measured by the measuring part 300, the shaft type internal spline workpiece 20 is knocked by a tool such as a copper bar for position correction, so that the axis of the inspection mandrel 200 and the axis of the shaft type internal spline workpiece 20 have high parallelism, and the inspection accuracy of the internal spline coaxiality in the shaft type internal spline workpiece 20 by the internal spline coaxiality inspection device 10 is effectively improved.
In this embodiment, a first marking groove 222 is formed in an end of the checking male spline 220 close to the first end 211 along the circumferential direction of the shaft body 210. The end of the verification male spline 220 near the second end 212 is provided with a second marking groove 223 along the circumferential direction of the shaft body 210. The first mark groove 222 and the second mark groove 223 are provided at intervals in the axial direction of the shaft body 210. When the internal spline is completely engaged with the first mark groove 222 of the inspection external spline 220, the tooth thickness of the internal spline is the minimum value of the allowable inspection internal spline tooth thickness of the inspection mandrel 200; when the internal spline is fully engaged with the checking male spline 220 at the second index groove 223, the tooth thickness of this internal spline is the maximum allowable thickness of the internal spline teeth 221 for checking the spindle 200.
Specifically, when the inspection mandrel 200 is inserted into the shaft-like internal spline workpiece 20, and the internal spline of the shaft-like internal spline workpiece 20 is clamped on the inspection external spline 220 between the first marking groove 222 and the second marking groove 223, it is indicated that the internal spline of the shaft-like internal spline workpiece 20 meets the quality requirement and is qualified; otherwise, the internal splines in the shaft-like internal spline workpiece 20 do not meet the quality requirements and are unqualified. Therefore, the arrangement of the first marking groove 222 and the second marking groove 223 can realize the limit value control of the thickness of the internal spline tooth 221 to be inspected by the inspection mandrel 200, namely, judge whether the thickness of the internal spline tooth 221 to be inspected is in the range of the thickness of the tooth which can be inspected by the inspection mandrel 200, and further simplify the use of the inspection mandrel 200.
Further, in the present embodiment, a parameter mark 215 for checking the mandrel 200 is provided on the outer surface of the shaft body 210. The parameter markings 215 may be disposed on the outer surface of the shaft body 210 by etching, writing, and the like. Specifically, the parameter identifier 215 is disposed on an outer surface of the first end 211. Wherein the parameter identification 215 includes two limit values for verifiable internal spline tooth thickness, shaft body 210 length, verification mandrel 200 number, and the like. Thus, the provision of parameter identification 215 not only facilitates the collection and management of inspection mandrel 200, but also facilitates the use of inspection mandrel 200.
In the present embodiment, the taper ratio of the key teeth 221 is 500:1 to 2000: 1. Thus, the taper ratio of the key teeth 221 is set to 500: in the range of 2000:1, the key teeth 221 of the inspection external splines 220 have a smaller taper ratio, so that the inspection mandrel 200 is tightly contacted with the tooth sides of the internal splines after being inserted into the internal splines of the shaft-type internal spline workpiece 20, the shaft-type internal spline workpiece 20 is more stable when being sleeved on the inspection mandrel 200, the shaft-type internal spline workpiece 20 is not easy to move relative to the inspection mandrel 200 in the process of inspecting the coaxiality of the internal splines, and the inspection accuracy of the coaxiality of the internal splines is greatly improved.
Further, in the present embodiment, the taper ratio of the key teeth 221 is 1000: 1. Thus, the taper ratio of the key teeth 221 is optimally 1000: 1. Setting the taper ratio of the key teeth 221 to 1000:1, when guaranteeing axle type internal spline work piece 20 cover establish with the stability of inspection dabber 200 on, still make inspection dabber 200 comparatively laborsaving, light to the work of inserting in the internal spline of axle type internal spline work piece 20.
Before the coaxiality of the internal splines in the shaft-type internal spline workpiece 20 is inspected, the inspection mandrel 200 needs to be inserted into the shaft-type internal spline workpiece 20 to judge whether the internal splines meet the design requirements or not by the inspection mandrel 200. Since the tooth thickness of each key tooth 221 in the inspection external spline 220 is gradually increased along the direction from the first end 211 to the second end 212, when inspecting the coaxiality of the internal splines, the inspection mandrel 200 of one specification can simultaneously inspect various shaft-type internal spline workpieces 20 with different tooth thicknesses. Therefore, the inspection mandrel 200 has high applicability, and the internal spline coaxiality inspection device 10 also has high applicability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An inspection mandrel, comprising:
the shaft body is in a strip shape and comprises a first end and a second end opposite to the first end; and
the inspection external spline comprises a plurality of key teeth, the plurality of key teeth are arranged on the shaft body at intervals along the circumferential direction of the shaft body, and the tooth thickness of each key tooth is gradually increased along the direction from the first end to the second end.
2. The inspection mandrel of claim 1 wherein said shaft body is a cylindrical shaft.
3. The inspection mandrel of claim 1 wherein said first end or said second end has a surface defining a hanger hole extending through said mandrel body.
4. The inspection mandrel as claimed in claim 1, wherein one end of the inspection external spline near the first end is provided with a first mark groove along the circumferential direction of the shaft body, one end of the inspection external spline near the second end is provided with a second mark groove along the circumferential direction of the shaft body, and the first mark groove and the second mark groove are arranged at intervals in the axial direction of the shaft body.
5. A testing mandrel according to claim 4 wherein the outer wall of said first end is provided with parameter indicia of said testing mandrel.
6. The inspection mandrel as claimed in claim 1, wherein the shaft end surface of the first end and the shaft end surface of the second end are both provided with a supporting groove, and the two supporting grooves and the shaft body are coaxially arranged.
7. The inspection mandrel of claim 1 wherein said key teeth have a taper ratio of 500:1 to 2000: 1.
8. The inspection mandrel of claim 7 wherein said key teeth have a taper ratio of 1000: 1.
9. An internal spline coaxiality inspection device, comprising:
the support has a supporting function and comprises a base with a measuring station and a supporting frame arranged on the base, and an installation part is arranged at the position of the supporting frame opposite to the measuring station;
the clamping assembly is arranged at the measuring station and comprises a first tip and a second tip, the first tip and the second tip are arranged oppositely and coaxially, and the first tip can slide along the connecting line direction of the first tip and the second tip;
the inspection mandrel of any one of claims 1 to 8, having two ends abutting the first point and the second point, respectively; and
the measuring part is arranged on the mounting part and comprises a measuring head which is telescopic in the connecting line direction of the mounting part and the measuring station;
the supporting frame can slide along the connecting line direction of the first tip and the second tip.
10. An internal spline coaxiality inspection device according to claim 9, wherein the measurement member is a dial indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921599395.6U CN210664302U (en) | 2019-09-24 | 2019-09-24 | Internal spline coaxiality inspection device and inspection mandrel thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921599395.6U CN210664302U (en) | 2019-09-24 | 2019-09-24 | Internal spline coaxiality inspection device and inspection mandrel thereof |
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| CN210664302U true CN210664302U (en) | 2020-06-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353641A (en) * | 2021-10-29 | 2022-04-15 | 中国航发西安动力控制科技有限公司 | Blind hole spline coaxiality measuring method and measuring device thereof |
| CN114777626A (en) * | 2022-04-26 | 2022-07-22 | 天津商业大学 | High-applicability test bed and method for measuring coaxiality of revolving body part |
-
2019
- 2019-09-24 CN CN201921599395.6U patent/CN210664302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353641A (en) * | 2021-10-29 | 2022-04-15 | 中国航发西安动力控制科技有限公司 | Blind hole spline coaxiality measuring method and measuring device thereof |
| CN114353641B (en) * | 2021-10-29 | 2024-03-26 | 中国航发西安动力控制科技有限公司 | Blind hole spline coaxiality measuring method and measuring device thereof |
| CN114777626A (en) * | 2022-04-26 | 2022-07-22 | 天津商业大学 | High-applicability test bed and method for measuring coaxiality of revolving body part |
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