CN116989634A - Positioning tool for detecting journal position and application method thereof - Google Patents

Positioning tool for detecting journal position and application method thereof Download PDF

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Publication number
CN116989634A
CN116989634A CN202311261126.XA CN202311261126A CN116989634A CN 116989634 A CN116989634 A CN 116989634A CN 202311261126 A CN202311261126 A CN 202311261126A CN 116989634 A CN116989634 A CN 116989634A
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China
Prior art keywords
piece
elastic
tensioning
connecting piece
detected
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CN202311261126.XA
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Chinese (zh)
Inventor
袁国庆
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Wanxiang Qianchao Co Ltd
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Wanxiang Qianchao Co Ltd
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Priority to CN202311261126.XA priority Critical patent/CN116989634A/en
Publication of CN116989634A publication Critical patent/CN116989634A/en
Pending legal-status Critical Current

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Abstract

The application relates to the technical field of positioning tools, in particular to a positioning tool for detecting the position degree of a shaft neck and a using method thereof. The device comprises a rotating device, an elastic tensioning assembly and a base, wherein the outer side of the rotating device is fixedly connected with the base, and the inner side of the rotating device is fixedly connected with the elastic tensioning assembly; the elastic tensioning assembly comprises a tensioning piece, a conical pressing piece and a first connecting piece, wherein the tensioning piece is sleeved outside the conical pressing piece; the inner part of the lower end part of the tensioning piece is in threaded connection with the first connecting piece; the inside well portion that has of tensioning member upper end, well portion have first working portion, second working portion, and first working portion is located the second working portion upside, and the tapering α1 of toper clamp equals with the tapering α2 of first working portion. Therefore, the problems that the detection device is complex, the mounting and positioning precision of the cross shaft is difficult to ensure and the measurement result is inaccurate when the position of the center hole of the cross shaft relative to the shaft neck is detected are solved.

Description

Positioning tool for detecting journal position and application method thereof
Technical Field
The application relates to the technical field of positioning tools, in particular to a positioning tool for detecting the position degree of a shaft neck and a using method thereof.
Background
With the popularization of lightweight axles, a drive axle differential assembly has been widely used, and a differential cross shaft is a part in the drive axle differential assembly and mainly used for supporting four planetary gears, so that differential rotation of an automobile during turning is realized. The position accuracy of the center hole of the differential cross axle is very high, and for the produced differential cross axle, four key points on the axle journal are required to be positioned on the same plane, namely the position degree of the cross axle journal is required to be in a specified qualified range, so that the position degree of the center hole of the differential cross axle relative to the axle journal is required to be detected.
At present, a cross shaft is usually placed on a detection device, the cross shaft is required to be pressed down during detection by utilizing a lever principle, a floating plate descends, a moving numerical value is transmitted to a lever through a mandrel by the floating plate, measurement information is fed back to a dial indicator fixed on the dial indicator frame by the lower end of the dial indicator frame, and the position error value of the cross shaft is obtained through multiple measurements, so that the detection structure is complex; in the measuring process, the cross shaft is manually pressed, then a measuring value is obtained through the lever principle, the cross shaft is manually pressed for a plurality of times, the positioning accuracy of the cross shaft is easily deteriorated in the pressing process, the measuring error is easily caused, and the measuring result is inaccurate.
Disclosure of Invention
The application provides a positioning tool for detecting the position of a shaft neck and a use method thereof, and aims to solve the problems that when the position of a central hole of a cross shaft relative to the shaft neck is detected, a detection device is complex, the installation and positioning precision of the cross shaft is difficult to ensure and a measurement result is inaccurate in the prior art.
In a first aspect, the present application provides a positioning tool for detecting a journal position, including:
the device comprises a rotating device, an elastic tensioning assembly and a base, wherein the outer side of the rotating device is fixedly connected with the base, and the inner side of the rotating device is fixedly connected with the elastic tensioning assembly;
the elastic tensioning assembly comprises a tensioning piece, a conical pressing piece and a first connecting piece, wherein the tensioning piece is sleeved outside the conical pressing piece, and the conical pressing piece is sleeved outside the first connecting piece;
the inner part of the lower end part of the tensioning piece is in threaded connection with the first connecting piece;
the inner diameter of the first working part is gradually reduced from top to bottom, the inner diameter of the second working part is consistent from top to bottom, and the inner diameter D1 of the lower end part of the first working part is equal to the inner diameter D2 of the upper end surface of the second working part;
the outer diameter of the conical pressing piece gradually reduces from top to bottom, and the taper alpha 1 of the conical pressing piece is equal to the taper alpha 2 of the first working part.
In some embodiments, the tension member forms a first mounting hole downwardly along the bottom of the hollow portion; the conical pressing piece is provided with a second mounting hole, and the second mounting hole penetrates through the upper end face and the lower end face of the conical pressing piece;
the center line of the first mounting hole coincides with the center line of the second mounting hole;
the second mounting hole is adapted to the first connector.
In some embodiments, the first mounting hole is a threaded hole, the second mounting hole is a through hole, and the first connector is a bolt.
In some embodiments, the outer circumferential surface of the tensioning element is provided with n first elastic grooves and m second elastic grooves, and the first elastic grooves and the second elastic grooves are staggered;
the first elastic groove is provided with a first round hole, a first vertical groove, a first horizontal groove, a second vertical groove and a second round hole; the lower arc surface of the first round hole is communicated with the upper end part of the first vertical groove, the lower end part of the first vertical groove is communicated with the left end part of the first horizontal groove, the right end part of the first horizontal groove is communicated with the lower end part of the second vertical groove, and the upper end part of the second vertical groove is communicated with the lower arc surface of the second round hole;
a distance L1 between the center line of the first circular hole and the bottom of the hollow part is equal to a distance L2 between the center line of the second circular hole and the bottom of the hollow part;
the second elastic groove is provided with a third round hole and a third vertical groove, the third round hole is positioned at the lower side of the third vertical groove, the third vertical groove vertically extends downwards along the upper end face of the tensioning piece, and the lower end part of the third vertical groove is communicated with the third round hole;
the third round hole is positioned at the lower side of the first round hole;
wherein n and m are any natural number greater than zero.
In some embodiments, the second elastic grooves are uniformly arranged along the outer circumference of the tension member;
q first elastic grooves are uniformly distributed between the ith second elastic groove and the (i+1) th second elastic groove;
where n is any natural number greater than 1, m=n×q.
In some embodiments, the rotating device comprises a second connecting piece and a third connecting piece, wherein the second connecting piece is positioned inside the third connecting piece, and the second connecting piece and the third connecting piece form a rotating pair;
the base is provided with a first mounting part;
the second connecting piece is fixedly connected with the tensioning piece, and the third connecting piece is fixedly connected with the first installation part.
In some embodiments, the positioning tool for detecting the journal position further comprises a detection device, wherein the detection device is fixedly connected with the base; the outer part of the elastic tensioning assembly is sleeved with a workpiece to be tested;
the detection device comprises a detection meter and a mounting frame, and the mounting frame is fixedly connected with the detection meter;
and the gauge head of the detection gauge is contacted with the journal to be detected of the workpiece to be detected.
In a second aspect, the present application provides a method for using a positioning tool for detecting a journal position, including:
step S11, sequentially and fixedly mounting a base, a rotating device and an elastic tensioning assembly;
step S12, sleeving a workpiece to be tested on the outer part of a tensioning piece of the elastic tensioning assembly, inserting a first connecting piece into the conical pressing piece, and twisting the first connecting piece to enable the first connecting piece to be connected with the lower end part of the tensioning piece through threads;
step S13, continuing to twist the first connecting piece, so that the conical pressing piece moves downwards relative to the tensioning piece, and stopping twisting the first connecting piece when the conical pressing piece stops moving relative to the tensioning piece;
and S14, the gauge head of the detection gauge is contacted with the journal to be detected of the workpiece to be detected, the detection gauge is fastened, and the position degree of the middle hole of the workpiece to be detected relative to the journal to be detected is detected.
In some embodiments, in step S14, the 1 st measurement of the test meter is obtained from the test meter while in contact with the first journal to be tested;
rotating the workpiece to be detected to enable a j-th journal to be detected of the workpiece to be detected to be in contact with the detection meter, and obtaining a j-th measured value of the detection meter;
and acquiring the position degree of the middle hole relative to the journal to be measured according to the 1 st measured value and the j th measured value.
In order to solve the problems that the detection device is complex and the mounting and positioning precision of the cross shaft is difficult to ensure and the measurement result is inaccurate when the position of the center hole of the cross shaft relative to the shaft neck is detected in the prior art, the application has the following advantages:
according to the application, the workpiece to be detected can be positioned and fixed through the rotating device, the elastic tensioning assembly and the base, the structure is simple, and the position degree of the middle hole of the differential mechanism cross shaft relative to the four shaft necks can be rapidly and conveniently detected; through the tensioning member, the toper that set up compresses tightly the piece, first connecting piece, toper compresses tightly the piece and is located the tensioning member inside, and first connecting piece can drive toper and compress tightly the piece and move down to the tensioning member is with the work piece that awaits measuring that rises, can guarantee at the tensioning in-process that the work piece medial surface atress that awaits measuring is even, guarantees the axiality of elasticity tensioning assembly and work piece that awaits measuring. The outer side of the rotating device is fixedly connected with the base, the inner side of the rotating device is fixedly connected with the elastic tensioning assembly, and coaxiality of the rotating device and the elastic tensioning assembly is guaranteed, so that positioning accuracy of a workpiece to be measured is guaranteed, the workpiece to be measured is fixed, and measurement errors are reduced; the elastic tension assembly can rotate relative to the base, and even in the rotating process of the workpiece to be measured, coaxiality between the workpiece to be measured and the elastic tension assembly can be guaranteed, so that measurement errors can be reduced, and accuracy of measurement results can be improved.
Drawings
FIG. 1 illustrates a schematic diagram of a positioning tool for journal position detection according to one embodiment;
FIG. 2 illustrates a front view of a tension member of an embodiment;
FIG. 3 illustrates a top view of a tension member of an embodiment;
FIG. 4 illustrates a front view of a conical compression member of an embodiment;
fig. 5 shows a method of using a positioning tool for detecting the journal position according to an embodiment.
The figure shows: a base 01; 02 rotating means; 03 an elastic tensioning assembly; 31 tensioning pieces; 311 a first working part; 312 a second working portion; 313 first mounting holes; 314 a first resilient slot; 315 a second resilient slot; 32 conical compacting pieces; 321 second mounting holes; 33 a first connector; 04 detecting means; 41 a detection table; 42 mounting frames; 05 the workpiece to be measured.
Detailed Description
The disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment. The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "transverse", "longitudinal", etc. refer to an orientation or positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The embodiment discloses a location frock is used in journal position degree detection, as shown in fig. 1-2, can include: the device comprises a rotating device 02, an elastic tensioning assembly 03 and a base 01, wherein the outer side of the rotating device 02 is fixedly connected with the base 01, and the inner side of the rotating device 02 is fixedly connected with the elastic tensioning assembly 03; the elastic tensioning assembly 03 comprises a tensioning piece 31, a conical pressing piece 32 and a first connecting piece 33, wherein the tensioning piece 31 is sleeved outside the conical pressing piece 32, and the conical pressing piece 32 is sleeved outside the first connecting piece 33; the inner part of the lower end part of the tensioning piece 31 is in threaded connection with the first connecting piece 33; the inner part of the upper end part of the tensioning piece 31 is provided with a hollow part, the hollow part is provided with a first working part 311 and a second working part 312, the first working part 311 is positioned on the upper side of the second working part 312, the inner diameter of the first working part 311 gradually reduces from top to bottom, the inner diameter of the second working part 312 is consistent up and down, and the inner diameter D1 of the lower end part of the first working part 311 is equal to the inner diameter D2 of the upper end surface of the second working part 312; the outer diameter of the tapered pressing member 32 gradually decreases from top to bottom, and the taper α1 of the tapered pressing member 32 is equal to the taper α2 of the first working portion 311.
In this embodiment, the rotating device 02 may enable the elastic tension assembly 03 to perform a rotational motion relative to the base 01, the elastic tension assembly 03 may position and fix the workpiece 05 to be measured, when the elastic tension assembly 03 performs a rotational motion relative to the base 01, the workpiece 05 to be measured may rotate synchronously with the elastic tension assembly 03, so that coaxiality between the elastic tension assembly 03 and the workpiece 05 to be measured in a rotating process may be ensured, thereby ensuring positioning accuracy of the workpiece 05 to be measured, and reducing measurement errors. The interior of the tension member 31 may have a hollow portion, and a conical compression member 32 may be installed and placed; the first connecting member 33 may drive the tapered pressing member 32 to move downward with respect to the tension member 31. The inner diameter of the first working portion 311 may be gradually reduced from top to bottom, and is in an inverted cone shape; the outer diameter of the conical pressing member 32 can be gradually reduced from top to bottom and is in an inverted conical shape; and the taper alpha 1 of the conical pressing piece 32 is equal to the taper alpha 2 of the first working part 311, so that the conical pressing piece 32 can smoothly move downwards along the first working part 311 of the elastic tensioning assembly 03. The outer diameter D3 of the upper end surface of the conical pressing member 32 is greater than or equal to the inner diameter D4 of the first working portion 311, the outer circumferential surface of the tensioning member 31 can have a micro deformation amount, when the first connecting member 33 drives the conical pressing member 32 to move downwards relative to the tensioning member 31, the conical pressing member 32 can expand the tensioning member 31, so that the tensioning member 31 can tightly tension the workpiece 05 to be measured, and positioning and fixing of the workpiece 05 to be measured are completed; meanwhile, when the conical pressing piece 32 expands the tension piece 31, the outer circumference of the conical pressing piece 32 is conical, so that the uniform stress of the tension piece 31 can be ensured, the uniform stress of the inner side surface of the workpiece 05 to be measured can be ensured, and the coaxiality of the elastic tension assembly 03 and the workpiece 05 to be measured can be ensured. The inner diameter of the second working portion 312 is consistent up and down, and the inner diameter D1 of the lower end portion of the first working portion 311 is equal to the inner diameter D2 of the upper end surface of the second working portion 312, when the conical pressing member 32 moves downwards relative to the tensioning member 31, a gap is formed between the lower end portion of the conical pressing member 32 and the inner surface of the second working portion 312, so that an avoidance space is formed, and obstruction to the downward movement of the conical pressing member 32 is avoided.
In some embodiments, as shown in fig. 3-4, the tension member 31 forms a first mounting hole 313 downwardly along the bottom of the hollow portion; the conical pressing member 32 has a second mounting hole 321, and the second mounting hole 321 penetrates through the upper and lower end surfaces of the conical pressing member 32; the center line of the first mounting hole 313 coincides with the center line of the second mounting hole 321; the second mounting hole 321 is fitted with the first connector 33.
In the present embodiment, the lower end portion of the first connection member 33 may be screw-coupled with the first mounting hole 313 through the second mounting hole 321.
In some embodiments, the tension member 31 may have a first cylindrical mounting portion that may extend vertically downward along a lower end surface of the first cylinder to form a second cylindrical mounting portion that may extend vertically downward along a lower end surface of the second cylindrical mounting portion to form a third cylindrical mounting portion that may extend vertically downward along a lower end surface of the third cylindrical mounting portion to form a fourth cylindrical mounting portion. The hollow portion may be located in the first cylindrical mounting portion, and an outer surface of the first cylindrical mounting portion may be in contact with an inner surface of the workpiece 05 to be measured, for positioning and mounting the workpiece 05 to be measured. The second cylindrical shape can vertically extend along the direction of the outer circumferential surface of the second cylindrical shape away from the outer circumferential surface of the second cylindrical shape to form a protruding portion, so that the connection strength of the tension member 31 is enhanced, and meanwhile, the rotation of the tension member 31 can be more stable in the rotation process of the tension member 31. The lower end face of the third cylindrical mounting part can be abutted with the upper end face of the rotating device 02, so that the supporting and positioning functions are realized. The fourth cylindrical installation department can be with rotary device 02's inner circle fixed connection, through the setting of first cylindrical installation department, second cylindrical installation department, third cylindrical installation department, fourth cylindrical installation department can make the rotation of tensioning member 31 in the rotatory process more steady.
In some embodiments, the first mounting hole 313 may penetrate from the upper end surface of the second cylindrical mounting portion to the lower end surface of the fourth cylindrical mounting portion, so as to ensure that the first connecting member 33 passes through the second mounting hole 321 of the tapered pressing member 32 to be in threaded connection with the first mounting hole 313, and ensure the connection strength between the first connecting member 33 and the tension member 31.
In some embodiments, the first mounting hole 313 is a threaded hole, the second mounting hole 321 is a through hole, and the first connector 33 is a bolt.
In this embodiment, the bolt may be screwed together with the first mounting hole 313 through the through hole.
In some embodiments, the outer circumferential surface of the tensioning element 31 is provided with n first elastic grooves 314 and m second elastic grooves 315, and the first elastic grooves 314 and the second elastic grooves 315 are staggered; the first elastic groove 314 has a first round hole, a first vertical groove, a first horizontal groove, a second vertical groove, and a second round hole; the lower arc surface of the first round hole is communicated with the upper end part of the first vertical groove, the lower end part of the first vertical groove is communicated with the left end part of the first horizontal groove, the right end part of the first horizontal groove is communicated with the lower end part of the second vertical groove, and the upper end part of the second vertical groove is communicated with the lower arc surface of the second round hole; the distance L1 between the center line of the first round hole and the bottom of the hollow part is equal to the distance L2 between the center line of the second round hole and the bottom of the hollow part; the second elastic groove 315 has a third round hole and a third vertical groove, the third round hole is located at the lower side of the third vertical groove, the third vertical groove extends vertically downwards along the upper end face of the tensioning member 31, and the lower end of the third vertical groove is communicated with the third round hole; the third round hole is positioned at the lower side of the first round hole; wherein n and m are any natural number greater than zero.
In this embodiment, the first elastic groove 314 may be formed by a first circular hole, a first vertical groove, a first horizontal groove, a second vertical groove, and a second circular hole, which are sequentially communicated and surrounded to form a U-shaped structure; the third vertical groove can extend downwards and vertically along the upper end face of the tensioning piece 31, and the lower end of the third vertical groove is communicated with the third round hole, so that the inner surface stress of the workpiece 05 to be tested can be uniform when the workpiece 05 to be tested is tensioned by the tensioning piece 31.
In some embodiments, the second elastic grooves 315 are uniformly arranged along the outer circumference of the tension member 31; the ith second elastic groove 315 and the (i+1) th second elastic groove 315 have q first elastic grooves 314 uniformly distributed therebetween; where n is any natural number greater than 1, m=n×q.
In this embodiment, the number of the first elastic grooves 314 may be 3, the number of the second elastic grooves 315 may be 3, the 3 second elastic grooves 315 are uniformly arranged along the outer circumference of the tensioning member 31, 1 first elastic groove 314 is arranged between the 1 st second elastic groove 315 and the 2 nd second elastic groove 315, 1 first elastic groove 314 is arranged between the 2 nd second elastic groove 315 and the 3 rd second elastic groove 315, 1 first elastic groove 314 is arranged between the 3 rd second elastic groove 315 and the 1 st second elastic groove 315, and the inner surface stress of the workpiece 05 to be measured can be uniformly ensured when the tensioning member 31 is tensioned to the workpiece 05 to be measured through the uniformly arranged first elastic grooves 314 and the second elastic grooves 315.
In this embodiment, the number of the first elastic grooves 314 may be 4, the number of the second elastic grooves 315 may be 4, the 4 second elastic grooves 315 are uniformly arranged along the outer circumference of the tension member 31, 1 first elastic groove 314 is arranged between the 1 st second elastic groove 315 and the 2 nd second elastic groove 315, 1 first elastic groove 314 is arranged between the 2 nd second elastic groove 315 and the 3 rd second elastic groove 315, and 1 first elastic groove 314 is arranged between the 3 rd second elastic groove 315 and the 4 th second elastic groove 315; the first elastic grooves 314 are arranged between the 4 th second elastic groove 315 and the 1 st second elastic groove 315, and the inner surface stress of the workpiece 05 to be detected is more uniform through the 4 first elastic grooves 314 which are uniformly arranged and the 4 second elastic grooves 315, so that the coaxiality between the workpiece 05 to be detected and the tensioning piece 31 is ensured, and the installation positioning precision of the workpiece 05 to be detected can be ensured.
In some embodiments, the rotating device 02 comprises a second connecting piece and a third connecting piece, the second connecting piece is positioned inside the third connecting piece, and the second connecting piece and the third connecting piece form a rotating pair; the base 01 has a first mounting portion; the second connecting piece is fixedly connected with the tensioning piece 31, and the third connecting piece is fixedly connected with the first mounting part.
In this embodiment, the rotating device 02 may include a second connecting member and a third connecting member, where the second connecting member and the third connecting member may form a rotating pair; the second connecting piece can be fixedly connected with the tensioning piece 31, and the third connecting piece can be fixedly connected with the first mounting part; so that the tension member 31 can perform a rotational movement with respect to the base 01.
In some embodiments, the rotating device 02 may be a bearing, an inner ring of the bearing may be in interference fit with a lower end portion of the tension member 31, an outer ring of the bearing may be in interference fit with the first mounting portion, and the inner ring and the outer ring of the bearing may rotate relative to each other, so that the tension member 31 may perform rotational movement relative to the base 01.
In some embodiments, the positioning tool for detecting the journal position further comprises a detection device 04, wherein the detection device 04 is fixedly connected with the base 01; the outside of the elastic tensioning assembly 03 is sleeved with a workpiece 05 to be tested; the detection device 04 comprises a detection meter 41 and a mounting frame 42, wherein the mounting frame 42 is fixedly connected with the detection meter 41; the head of the inspection gauge 41 is in contact with the journal to be inspected of the workpiece 05 to be inspected.
In this embodiment, a detection device 04 may also be disposed on the base 01, where the detection device 04 may detect the position of the workpiece 05 to be detected. The detection device 04 may include a detection meter 41 and a mounting frame 42, where the mounting frame 42 may include a first connecting rod and a second connecting rod, the central axis of the first connecting rod is perpendicular to the upper surface of the base 01, and the central axes of the first connecting rod and the second connecting rod are mutually perpendicular. The lower tip of head rod can fixed mounting be in the one end of base 01, and the upper end of head rod can be dismantled with the right-hand member portion of second connecting rod and be connected, and the left end of second connecting rod and detection table 41 fixed connection, the central axis of the gauge outfit of detection table 41 perpendicular to base 01's upper surface guarantees that the gauge outfit can with the contact of the outer periphery of the shaft neck that awaits measuring of workpiece 05 awaits measuring. When the position of the workpiece 05 to be detected is required to be detected, the bolts between the first connecting rod and the second connecting rod can be loosened, so that the first connecting rod can rotate clockwise or anticlockwise relative to the central axis of the second connecting rod, and the detection meter 41 can be driven to move until the gauge head of the detection meter 41 is contacted with the journal to be detected of the workpiece 05 to be detected, and the bolts between the first connecting rod and the second connecting rod are fastened, so that the detection meter 41 is fixed.
As shown in fig. 5, in some embodiments, a method for using a positioning tool for detecting a journal position is provided, including the following steps:
step S11, sequentially and fixedly mounting a base 01, a rotating device 02 and an elastic tensioning assembly 03;
step S12, sleeving the workpiece 05 to be tested on the outer part of the tension member 31 of the elastic tension assembly 03, inserting the first connecting piece 33 into the conical compression member 32, and twisting the first connecting piece 33 to enable the first connecting piece 33 to be in threaded connection with the lower end part of the tension member 31;
step S13, continuing to twist the first connecting piece 33, so that the conical pressing piece 32 moves downwards relative to the tensioning piece 31, and stopping twisting the first connecting piece 33 when the conical pressing piece 32 stops moving relative to the tensioning piece 31;
step S14, the gauge head of the detection gauge 41 is contacted with the journal to be detected of the workpiece 05 to be detected, the detection gauge 41 is fastened, and the position degree of the middle hole of the workpiece 05 to be detected relative to the journal to be detected is detected.
In this embodiment, the base 01, the rotating device 02 and the elastic tension assembly 03 may be sequentially and fixedly installed, and the elastic tension assembly 03 is ensured to be capable of rotating around the central axis of the elastic tension assembly 03 by sequentially connecting the base 01, the rotating device 02 and the elastic tension assembly 03; the workpiece 05 to be tested can be sleeved outside the tension member 31 of the elastic tension assembly 03, the first connecting piece 33 can be inserted into the conical compression member 32, and the first connecting piece 33 is twisted to enable the first connecting piece 33 to be in threaded connection with the lower end part of the tension member 31, and a certain gap is reserved between the workpiece 05 to be tested and the tension member 31; continuing to twist the first connecting piece 33, so that the conical pressing piece 32 moves downwards relative to the tensioning piece 31, and stopping twisting the first connecting piece 33 when the conical pressing piece 32 stops moving relative to the tensioning piece 31, and the tensioning piece 31 tensioning the workpiece 05 to be tested at the moment can fix and position the workpiece 05 to be tested; the gauge head of the detection gauge 41 is contacted with the journal to be detected of the workpiece 05 to be detected, the detection gauge 41 is fastened, the detection gauge 41 is prevented from shifting in the rotating process of the workpiece 05 to be detected, therefore, the position of a middle hole of the workpiece 05 to be detected relative to the journal to be detected is detected, in the detecting process, only the workpiece 05 to be detected is required to be rotated, the numerical value of the detection gauge 41 is recorded, the height of the detection gauge 41 is unchanged in the rotating process, the central line axis of the workpiece 05 to be detected can always coincide with the central line axis of the rotating device 02, the positioning of the workpiece 05 to be detected is realized, and the accuracy of the detection result is improved.
In some embodiments, in step S14, the 1 st measurement of the test meter 41 is obtained from the test meter 41 when it is in contact with the first journal to be tested; rotating the workpiece 05 to be detected to enable the j-th journal to be detected of the workpiece 05 to be detected to be in contact with the detection table 41, and obtaining the j-th measured value of the detection table 41; and acquiring the position degree of the middle hole relative to the journal to be measured according to the 1 st measured value and the j th measured value.
In this embodiment, the number of journals to be measured may be 4, and in step S14, the first measured value of the detection table 41 may be obtained according to the time when the detection table 41 contacts the first journal to be measured; rotating the workpiece 05 to be detected to enable the 2 nd journal to be detected of the workpiece 05 to be detected to be in contact with the detection meter 41, and obtaining the 2 nd measured value of the detection meter 41; continuing to rotate the workpiece 05 to be detected to enable the 3 rd journal to be detected of the workpiece 05 to be detected to be in contact with the detection meter 41, and obtaining the 3 rd measured value of the detection meter 41; continuing to rotate the workpiece 05 to be detected to enable the 4 th journal to be detected of the workpiece 05 to be detected to be in contact with the detection meter 41, and obtaining the 4 th measured value of the detection meter 41; the position degree of the middle hole of the workpiece 05 to be measured relative to the 4 journals to be measured can be obtained according to the change values among the 1 st measured value, the 2 nd measured value, the 3 rd measured value and the 4 th measured value.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the disclosure, and that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure.

Claims (9)

1. The utility model provides a journal position degree detects with location frock which characterized in that, the journal position degree detects with location frock includes:
the device comprises a rotating device, an elastic tensioning assembly and a base, wherein the outer side of the rotating device is fixedly connected with the base, and the inner side of the rotating device is fixedly connected with the elastic tensioning assembly;
the elastic tensioning assembly comprises a tensioning piece, a conical pressing piece and a first connecting piece, wherein the tensioning piece is sleeved outside the conical pressing piece, and the conical pressing piece is sleeved outside the first connecting piece;
the inner part of the lower end part of the tensioning piece is in threaded connection with the first connecting piece;
the inner diameter of the first working part is gradually reduced from top to bottom, the inner diameter of the second working part is consistent from top to bottom, and the inner diameter D1 of the lower end part of the first working part is equal to the inner diameter D2 of the upper end surface of the second working part;
the outer diameter of the conical pressing piece gradually reduces from top to bottom, and the taper alpha 1 of the conical pressing piece is equal to the taper alpha 2 of the first working part.
2. The positioning tool for detecting the position of a shaft neck according to claim 1, wherein,
the tensioning piece downwards forms a first mounting hole along the bottom of the hollow part; the conical pressing piece is provided with a second mounting hole, and the second mounting hole penetrates through the upper end face and the lower end face of the conical pressing piece;
the center line of the first mounting hole coincides with the center line of the second mounting hole;
the second mounting hole is adapted to the first connector.
3. The positioning tool for detecting the position of the shaft neck according to claim 2, wherein,
the first mounting hole is a threaded hole, the second mounting hole is a through hole, and the first connecting piece is a bolt.
4. The positioning tool for detecting the position of a shaft neck according to claim 1, wherein,
the outer circumferential surface of the tensioning piece is provided with n first elastic grooves and m second elastic grooves, and the first elastic grooves and the second elastic grooves are staggered;
the first elastic groove is provided with a first round hole, a first vertical groove, a first horizontal groove, a second vertical groove and a second round hole; the lower arc surface of the first round hole is communicated with the upper end part of the first vertical groove, the lower end part of the first vertical groove is communicated with the left end part of the first horizontal groove, the right end part of the first horizontal groove is communicated with the lower end part of the second vertical groove, and the upper end part of the second vertical groove is communicated with the lower arc surface of the second round hole;
a distance L1 between the center line of the first circular hole and the bottom of the hollow part is equal to a distance L2 between the center line of the second circular hole and the bottom of the hollow part;
the second elastic groove is provided with a third round hole and a third vertical groove, the third round hole is positioned at the lower side of the third vertical groove, the third vertical groove vertically extends downwards along the upper end face of the tensioning piece, and the lower end part of the third vertical groove is communicated with the third round hole;
the third round hole is positioned at the lower side of the first round hole;
wherein n and m are any natural number greater than zero.
5. The positioning tool for detecting the position of a shaft neck according to claim 4, wherein,
the second elastic grooves are uniformly distributed along the outer circumference of the tensioning piece;
q first elastic grooves are uniformly distributed between the ith second elastic groove and the (i+1) th second elastic groove;
where n is any natural number greater than 1, m=n×q.
6. The positioning tool for detecting the position of a shaft neck according to claim 1, wherein,
the rotating device comprises a second connecting piece and a third connecting piece, the second connecting piece is positioned in the third connecting piece, and the second connecting piece and the third connecting piece form a rotating pair;
the base is provided with a first mounting part;
the second connecting piece is fixedly connected with the tensioning piece, and the third connecting piece is fixedly connected with the first installation part.
7. The positioning tool for detecting the position of a shaft neck according to claim 1, wherein,
the positioning tool for detecting the journal position degree further comprises a detection device, and the detection device is fixedly connected with the base; the outer part of the elastic tensioning assembly is sleeved with a workpiece to be tested;
the detection device comprises a detection meter and a mounting frame, and the mounting frame is fixedly connected with the detection meter;
and the gauge head of the detection gauge is contacted with the journal to be detected of the workpiece to be detected.
8. The method of using a positioning tool for detecting the position of a journal according to any one of claims 1 to 7, wherein the method of using a positioning tool for detecting the position of a journal comprises:
step S11, sequentially and fixedly mounting a base, a rotating device and an elastic tensioning assembly;
step S12, sleeving a workpiece to be tested on the outer part of a tensioning piece of the elastic tensioning assembly, inserting a first connecting piece into the conical pressing piece, and twisting the first connecting piece to enable the first connecting piece to be connected with the lower end part of the tensioning piece through threads;
step S13, continuing to twist the first connecting piece, so that the conical pressing piece moves downwards relative to the tensioning piece, and stopping twisting the first connecting piece when the conical pressing piece stops moving relative to the tensioning piece;
and S14, the gauge head of the detection gauge is contacted with the journal to be detected of the workpiece to be detected, the detection gauge is fastened, and the position degree of the middle hole of the workpiece to be detected relative to the journal to be detected is detected.
9. The method for using a positioning tool for detecting the position of a shaft neck according to claim 8, wherein,
in step S14, according to the fact that the detection table is in contact with the first journal to be detected, obtaining a 1 st measured value of the detection table;
rotating the workpiece to be detected to enable a j-th journal to be detected of the workpiece to be detected to be in contact with the detection meter, and obtaining a j-th measured value of the detection meter;
and acquiring the position degree of the middle hole relative to the journal to be measured according to the 1 st measured value and the j th measured value.
CN202311261126.XA 2023-09-27 2023-09-27 Positioning tool for detecting journal position and application method thereof Pending CN116989634A (en)

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