CN113008105A - Internal spline tooth top circle diameter inspection fixture - Google Patents
Internal spline tooth top circle diameter inspection fixture Download PDFInfo
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- CN113008105A CN113008105A CN201911325772.1A CN201911325772A CN113008105A CN 113008105 A CN113008105 A CN 113008105A CN 201911325772 A CN201911325772 A CN 201911325772A CN 113008105 A CN113008105 A CN 113008105A
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- 238000007689 inspection Methods 0.000 title claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 49
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 49
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an internal spline tooth top circle diameter inspection fixture, which mainly aims at the diameter size which can not be accurately measured by the conventional means such as small tooth top circle tooth thickness, odd number teeth and the like, and comprises the following steps: a support mechanism; the measuring mechanism is fixedly arranged on the supporting mechanism; a transmission mechanism is arranged in the measuring mechanism and is movably connected with the adjusting mechanism; the adjusting mechanism drives the transmission mechanism to move so as to drive a first hard alloy measuring head of the measuring mechanism to move, so that the first hard alloy measuring head is positioned on the surface of the inner hole of the inner spline; a first hard alloy measuring head, a second hard alloy measuring head and a third hard alloy measuring head of the measuring mechanism are simultaneously positioned on the surface of the inner hole of the inner spline to realize fixation; the transmission mechanism is in driving connection with the dial indicator; the invention not only shortens the detection time, but also has the advantages of simple operation, unlimited measurement environment, accurate and stable detection data, and the applied theoretical method can be applied to the measurement of the diameters of the internal spline holes with any number of teeth.
Description
Technical Field
The invention relates to the technical field of machining detection tools, in particular to an internal spline tooth top circle diameter inspection clamp.
Background
With the development of the technological level, the requirements on the quality, precision, complex structure, miniaturization and the like of products are higher and higher, so that the development and progress of mechanical processing technology and equipment are promoted, and the precision of the products processed at present reaches the processing precision of a gauge; the traditional detection methods and means such as plug gauges and caliper gauges cannot be used, other methods such as internal diameter gauge plug gauges and caliper gauges, pneumatic plug gauges and caliper gauges and inductance plug gauges and caliper gauges can meet the requirements on precision, but the requirements on accuracy, applicability and reliability cannot be met because the product structure is complex and no measurement method is available at all; the small-diameter internal spline hole is small in hole and modulus, the circumferential surface is a grid-type narrow-size surface, the number of teeth is any odd number of teeth (not a multiple of three), and the product is difficult to measure, long in time consumption and inaccurate in measurement precision.
Therefore, the device which is simple to operate, short in time consumption and accurate in measurement precision is designed by combining the measurement defects of the small-diameter internal spline hole in the prior art, so that the problems are solved.
Disclosure of Invention
The invention aims to provide the internal spline crest circle diameter inspection fixture which is simple to operate, short in time consumption and accurate in measurement precision.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses an internal spline crest circle diameter inspection fixture, which comprises:
a support mechanism; and
the measuring mechanism is fixedly arranged on the supporting mechanism;
wherein, a transmission mechanism is arranged in the measuring mechanism and is movably connected with the adjusting mechanism;
the adjusting mechanism drives the transmission mechanism to move so as to drive a first hard alloy measuring head of the measuring mechanism to move, so that the first hard alloy measuring head is positioned on the surface of the inner hole of the inner spline;
the measuring mechanism is provided with a second hard alloy measuring head and a third hard alloy measuring head, and the first hard alloy measuring head, the second hard alloy measuring head and the third hard alloy measuring head are simultaneously positioned on the surface of the inner hole of the inner spline to realize positioning measurement;
the transmission mechanism is in driving connection with the dial indicator.
The support mechanism includes:
a base plate; and
and the ground feet arranged at the four corners of the bottom plate are fixed through inner hexagon screws.
The measuring mechanism further includes:
one end of the connecting column is fixedly arranged on the bottom plate through a socket head cap screw, and the other end of the connecting column is provided with a positioning plate; and
the positioning plate is provided with an installation interface, and the section of the installation interface is circular;
the first hard alloy measuring head, the second hard alloy measuring head and the third hard alloy measuring head are respectively arranged on the mounting interface;
the connecting column is provided with a lever groove.
The transmission mechanism includes:
the lever is connected to the lever in the lever groove in a sliding mode through a pin shaft and swings with the pin shaft as a shaft; and
one end of the lever, which is arranged in the positioning plate, is connected with one end of the spring, the other end of the spring is connected with the adjusting screw, and the adjusting screw is movably connected to the positioning plate;
wherein, a limit screw is arranged in the connecting column and used for limiting the sliding distance of the lever; and
the extension gauge rod is movably arranged on the connecting column, one end of the extension gauge rod is positioned in the connecting column and is perpendicular to one end of the lever, and the other end of the extension gauge rod is connected with the dial indicator.
The adjustment mechanism includes:
the limiting handle is movably connected to the side of the connecting column through an eccentric shaft; and
the elastic collar for the shaft is sleeved at the connecting part of the limiting handle and the eccentric shaft;
wherein the elastic collar for the shaft is used for fixing the axial movement of the eccentric shaft.
The first hard alloy measuring head is positioned at the center of the upper port of the lever groove;
the second hard alloy measuring head and the third hard alloy measuring head are centrosymmetric by taking the lever groove as an axis and form an included angle of 112.5 degrees.
And a plurality of calibration pieces are arranged on the bottom plate for measurement and calibration.
The measuring method of the internal spline crest circle diameter inspection clamp comprises the following steps:
s1: a worker places the first calibrating piece on the positioning plate, stirs the limiting handle to drive the eccentric shaft to rotate, and the eccentric shaft moves upwards to jack the first hard alloy measuring head to fall on the surface of the inner hole of the first calibrating piece;
s2: in the operation process of S1, the second hard alloy measuring head and the third hard alloy measuring head are fixed on the surface of the inner hole of the first calibration piece, and the dial indicator is set to 0;
s3: placing the second calibrating piece on the positioning plate, checking whether the two measurement results are the diameter difference of the two calibrating pieces or not in the same operation process of S1 and S2, and if the two measurement results are the diameter difference of the two calibrating pieces, proving that the lever proportion is correct;
s4: and repeating the steps of S1 and S1 to measure the circular hole of the tooth top of the internal spline, rotating the internal spline after the installation is finished, enabling the visual value of the dial indicator to fluctuate between one large value and one small value, enabling all the difference values to be qualified products within the diameter difference range, and after the inspection is finished, using the first calibration piece again to perform zero calibration.
In the technical scheme, the internal spline crest circle diameter inspection clamp provided by the invention has the following beneficial effects:
compared with the prior art which has no check tool and only adopts a three-coordinate detection method, the detection time of each product can be shortened, and the efficiency is improved; meanwhile, the fixture device provided by the invention has the advantages of compact structure, simplicity in operation, unlimited measuring environment and accurate and stable detection data, can be applied to measuring the diameters of the internal spline holes with any number of teeth, and is suitable for wide popularization and application.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural view of an internal spline crest circle diameter inspection jig provided by the invention;
FIG. 2 is a side view of an internal spline crest circle diameter inspection jig provided by the present invention;
FIG. 3 is a front view of an internal spline crest circle diameter inspection jig provided by the present invention;
FIG. 4 is a schematic view of a mounting angle of a measuring head in the internal spline crest diameter inspection jig provided by the invention;
FIG. 5 is a partial side view of an internal spline crest circle diameter inspection fixture provided by the present invention;
FIG. 6 is a dimension measuring diagram of a first embodiment of the internal spline crest circle diameter inspection jig provided by the invention;
FIG. 7 is a dimension measuring diagram of a second embodiment of the internal spline crest circle diameter inspection jig provided by the invention;
FIG. 8 is a dimension measuring diagram of a third embodiment of the internal spline crest circle diameter inspection jig provided by the invention;
FIG. 9 is a diagram of the mathematical model of FIG. 4 according to the present invention.
Description of reference numerals:
1. a support mechanism; 2. a measuring mechanism; 3. a transmission mechanism; 4. an adjustment mechanism; 5. a dial indicator; 6. a calibration piece; 7. a socket head cap screw;
11. a base plate; 12. ground feet;
21. connecting columns; 22. positioning a plate; 23. a first cemented carbide stylus; 24. a second cemented carbide stylus; 25. a third cemented carbide stylus;
31. a lever; 32. a pin shaft; 33. a spring; 34 adjusting the screw; 35. a limit screw; 36. lengthening the meter rod;
41. a limiting handle; 42. an eccentric shaft;
211. a lever groove;
221. and installing an interface.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-9;
the invention discloses an internal spline crest circle diameter inspection fixture, which comprises:
a support mechanism 1; and
a measuring mechanism 2 fixedly arranged on the supporting mechanism 1;
wherein, a transmission mechanism 3 is arranged in the measuring mechanism 2, and the transmission mechanism 3 is movably connected with an adjusting mechanism 4;
the adjusting mechanism 4 drives the transmission mechanism 3 to move so as to drive the first hard alloy measuring head 23 of the measuring mechanism 2 to move, so that the first hard alloy measuring head 23 is positioned on the surface of the inner hole of the inner spline;
the measuring mechanism 2 is provided with a second hard alloy measuring head 24 and a third hard alloy measuring head 25, and the first hard alloy measuring head 23, the second hard alloy measuring head 24 and the third hard alloy measuring head 25 are simultaneously positioned on the surface of the inner hole of the internal spline to realize positioning measurement;
the transmission mechanism 3 is connected with a dial indicator 5 in a driving way.
The support mechanism 1 includes:
a base plate 11; and
the feet 12 arranged at the four corners of the bottom plate 11 are fixed through the socket head cap screws 7.
The measuring mechanism 2 further includes:
one end of the connecting column 21 is fixedly arranged on the bottom plate 11 through an inner hexagon screw 7, and the other end of the connecting column 21 is provided with a positioning plate 22; and
the positioning plate 22 is provided with an installation interface 221, and the installation interface 221 is of a circular structure;
the first cemented carbide probe 23, the second cemented carbide probe 24 and the third cemented carbide probe 25 are respectively arranged on the mounting interface 221;
the connection post 21 is provided with a lever groove 211.
The transmission mechanism 3 includes:
the lever 31 is connected to the lever groove 211 in a sliding manner through a pin shaft 32, and the lever 31 swings around the pin shaft 32; and
one end of the lever 31 arranged in the positioning plate 22 is connected with one end of a spring 33, the other end of the spring 33 is connected with an adjusting screw 34, and the adjusting screw 34 is movably connected on the positioning plate 22;
wherein, a limit screw 35 is arranged in the connecting column 21, and the limit screw 35 is used for limiting the sliding distance of the lever 31; and
the lengthened gauge rod 36 is movably arranged on the connecting column 21, one end of the lengthened gauge rod 36 is positioned in the connecting column 21 and is vertical to one end of the lever 31, and the other end of the lengthened gauge rod 36 is connected with the dial indicator 5.
Specifically, the measuring force of the first cemented carbide measuring head 23 is adjusted and controlled by a spring 33 and an adjusting screw 34.
The adjustment mechanism 4 includes:
a limit handle 41 movably connected to the side of the connecting column 21 through an eccentric shaft 42; and
an elastic collar 43 for the shaft sleeved at the connection part of the limit handle 41 and the eccentric shaft 42;
wherein the elastic collar 43 for shaft is used to fix the axial movement of the eccentric shaft 42.
The first hard alloy measuring head 23 is positioned at the center of the upper port of the lever groove 211;
the second cemented carbide gauge head 24 and the third cemented carbide gauge head 25 are centrosymmetric with the lever groove 211 as an axis and form an included angle of 112.5 degrees.
A plurality of calibration pieces 6 are mounted on the bottom plate 11 for measurement calibration.
The measuring method of the internal spline crest circle diameter inspection clamp comprises the following steps:
s1: a worker places the first calibrating piece 6 on the positioning plate 22, dials the limit handle 41 to drive the eccentric shaft 42 to rotate, and the eccentric shaft 42 moves upwards to jack up the first hard alloy measuring head 23 to fall on the surface of the inner hole of the first calibrating piece 6;
s2: in the operation process of S1, the second cemented carbide measuring head 24 and the third cemented carbide measuring head 25 are fixed on the surface of the inner hole of the first calibration piece 6, and the dial indicator 5 is set to 0;
s3: placing the second calibrating piece 6 on the positioning plate 22, checking whether the two measurement results are the diameter difference of the two calibrating pieces 6 or not in the same operation process of S1 and S2, and if the two measurement results are the diameter difference of the two calibrating pieces 6, proving that the lever ratio is correct;
s4: and repeating the steps of S1 and S1 to measure the circular hole of the tooth top of the internal spline, rotating the internal spline after the installation is finished, enabling the visual value of the dial indicator 5 to fluctuate between one step and one step, enabling all the difference values to be qualified products within the diameter difference range, and after the inspection is finished, using the first calibrating piece 6 again to perform zero calibration.
The specific operation method and the embodiment of the internal spline crest circle diameter inspection clamp of the invention demonstrate that:
in the using process, firstly, the calibrating piece 6 with the diameter of 30.4 is placed on the positioning plate 22, the limiting handle 41 is shifted to drive the eccentric shaft 42 to rotate, the eccentric shaft 42 jacks up the first hard alloy measuring head 23 to fall on the inner hole surface of the calibrating piece 6, meanwhile, the second hard alloy measuring head 24 and the third hard alloy measuring head 25 are also fixed on the inner hole surface of the calibrating piece 6, the dial indicator 5 is placed at 0, then, the calibrating piece 6 with the diameter of 30.416 is placed on the positioning plate 22, the operation is carried out in the same way, whether the results of two times of measurement are 0.016 is checked, if the results are 0.016, the lever ratio is proved to be correct, then, the tooth crest round hole of the internal spline is measured by the same steps, after the installation is finished, the internal spline is rotated, the visual value of the dial indicator 5 fluctuates back and forth in one step, but all the difference values are in the range of 0-0.016, namely a qualified product, after the inspection is finished, the calibration piece 6 with the diameter of 30.4 is used again for zero calibration;
preferably, the second cemented carbide gauge head 24 and the third cemented carbide gauge head 25 are installed in a central symmetry manner by taking the lever groove 211 as an axis and form an included angle of 112.5 degrees, the included angle corresponds to 10 tooth pitches of the 32-tooth internal spline, the radial positioning effect is achieved on the internal spline tooth top circle, the positioning plate 22 is fastened on the connecting column 21 and can be adjusted back and forth along the axial direction, and the axial positioning effect is achieved on the internal spline.
According to the gauge structure provided by the invention, the applied method is three-point method detection, the body formed by the three-point method is a cylindrical structure, two measuring heads are embedded on the same vertical axis cross section (measuring cross section), the size and the distribution angle size of the measuring heads are determined by the number of teeth of the product, the number of teeth in the following embodiment is 32 teeth, the three equal division cannot be realized, and the angle for fixedly embedding the two measuring heads is 10 teeth corresponding to 112.5 degrees during design; the measuring head is positioned at the lower end, the angle between the measuring head and the two fixed measuring heads is 11 teeth, the number of teeth corresponds to 123.75 degrees, the size change is transmitted to the dial indicator through the lever, and the visual value is displayed, so that the change condition of the measuring head size when different diameters are measured is as follows:
FIG. 6 shows a first embodiment: measuring diameters phi 30.4 and phi 30.42, wherein the diameter change is 0.02, the measuring head change is 0.028, and the ratio of the measuring head change to the diameter change is 1.4;
FIG. 7 shows a second embodiment: measuring diameters phi 30.4 and phi 30.45, wherein the diameter change is 0.05, the measuring head change is 0.0699, and the ratio of the measuring head change to the diameter change is 1.398;
FIG. 8 shows a third embodiment: measuring diameters phi 30.4 and phi 30.5, wherein the diameter changes by 0.1, the measuring head changes by 0.1397, and the ratio of the measuring head change to the diameter change is 1.397;
the difference between 1.398 and 1.4 is 0.002, the difference between 1.397 and 1.4 is 0.003, the dimensional change and the true value error of 0.1 mm are not more than 0.00021 mm, and a dial indicator and a sensor with common precision cannot measure, but the product in the invention requires the diameter dimensional tolerance of 0.016 mm, the measured product is in a qualified range, the structural principle error of a three-point method tends to 0, and the real change value and the actual diameter ratio measured by the three-point method are 1.4:1, so that the design adopts a ratio of 1: the lever ratio of 1.4 changes the measured real change value back to the actual diameter value;
referring to fig. 5 and 9, the measurement points from the lever structure measurement measuring head to the pin shaft and from the pin shaft to the dial indicator are 44.8 and 32 respectively, the mathematical model is two similar triangles, the dial indicator is fixed and is unchanged from the body to the point O, the horizontal projection of the measurement measuring head is changed when measuring the dimension, a delta error is generated on the dial indicator, the error of the product is 0.000002 mm within the range of 0.016 mm of the qualified tolerance, and the error actually existing in the qualified product cannot be detected even if a high-precision sensor is used, so that no error is considered.
In the technical scheme, the internal spline crest circle diameter inspection clamp provided by the invention has the following beneficial effects:
compared with the prior art which has no check tool and only adopts a three-coordinate detection method, the detection time of each product can be shortened, and the efficiency is improved; meanwhile, the fixture device provided by the invention has the advantages of compact structure, simplicity in operation, unlimited measuring environment and accurate and stable detection data, can be applied to measuring the diameters of the internal spline holes with any number of teeth, and has wide application prospect.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. Internal spline addendum circle diameter inspection anchor clamps, its characterized in that includes:
a support mechanism (1); and
a measuring mechanism (2) fixedly arranged on the supporting mechanism (1);
wherein, a transmission mechanism (3) is arranged in the measuring mechanism (2), and the transmission mechanism (3) is movably connected with an adjusting mechanism (4);
the adjusting mechanism (4) drives the transmission mechanism (3) to move so as to drive a first hard alloy measuring head (23) of the measuring mechanism (2) to move, so that the first hard alloy measuring head (23) is located on the surface of an inner hole of the inner spline;
the measuring mechanism (2) is provided with a second hard alloy measuring head (24) and a third hard alloy measuring head (25), and the first hard alloy measuring head (23), the second hard alloy measuring head (24) and the third hard alloy measuring head (25) are simultaneously positioned on the surface of the inner hole of the inner spline to perform positioning measurement;
the transmission mechanism (3) is in driving connection with the dial indicator (5).
2. The internal spline crest circle diameter inspection jig according to claim 1, wherein the support mechanism (1) comprises:
a base plate (11); and
and the ground feet (12) are fixedly arranged at the four corners of the bottom plate (11) through inner hexagon screws (7).
3. The internal spline crest diameter inspection jig according to claim 2, characterized in that the measuring mechanism (2) further comprises:
one end of the connecting column (21) is fixedly arranged on the bottom plate (11) through an inner hexagonal screw (7), and the other end of the connecting column (21) is provided with a positioning plate (22); and
the positioning plate (22) is provided with a mounting interface (221), and the section of the mounting interface (221) is circular;
the first hard alloy measuring head (23), the second hard alloy measuring head (24) and the third hard alloy measuring head (25) are respectively arranged on the mounting interface (221);
the connecting column (21) is provided with a lever groove (211).
4. The internally splined crest circle diameter inspection jig of claim 3, wherein the transmission mechanism (3) comprises:
the lever (31) is connected to the lever groove (211) in a sliding mode through a pin shaft (32), and the lever (31) swings with the pin shaft (32) as a shaft; and
one end of the lever (31) arranged in the positioning plate (22) is connected with one end of a spring (33), the other end of the spring (33) is connected with an adjusting screw (34), and the adjusting screw (34) is movably connected to the positioning plate (22);
wherein a limit screw (35) is arranged in the connecting column (21), and the limit screw (35) is used for limiting the sliding distance of the lever (31); and
the dial indicator is characterized in that a lengthened indicator rod (36) is movably arranged on the connecting column (21), one end of the lengthened indicator rod (36) is located in the connecting column (21) and is perpendicular to one end of the lever (31), and the other end of the lengthened indicator rod (36) is connected with the dial indicator (5).
5. The internally splined crest diameter inspection jig of claim 3, wherein the adjustment mechanism (4) comprises:
a limit handle (41) movably connected to the side of the connecting column (21) through an eccentric shaft (42); and
an elastic collar (43) for the shaft is sleeved at the joint of the limit handle (41) and the eccentric shaft (42);
wherein the shaft is provided with an elastic collar (43) for fixing the axial movement of the eccentric shaft (42).
6. The internal spline crest circle diameter inspection jig of claim 3, wherein:
the first hard alloy measuring head (23) is positioned at the center of an upper port of the lever groove (211);
the second hard alloy measuring head (24) and the third hard alloy measuring head (25) are centrosymmetric by taking the lever groove (211) as an axis and form an included angle of 112.5 degrees.
7. The internal spline crest circle diameter inspection jig of claim 2, characterized in that:
and a plurality of calibration pieces (6) are arranged on the bottom plate (11) for measurement and calibration.
8. The internal spline crest circle diameter inspection jig according to claim 5, characterized in that the measuring method of the internal spline crest circle diameter inspection jig comprises the steps of:
s1: the first calibrating piece (6) is placed on the positioning plate (22), the limiting handle (41) is pulled to drive the eccentric shaft (42) to rotate, and the eccentric shaft (42) moves upwards to jack up the first hard alloy measuring head (23) and falls on the surface of an inner hole of the first calibrating piece (6);
s2: in the operation process of S1, the second hard alloy measuring head (24) and the third hard alloy measuring head (25) are fixed on the surface of the inner hole of the first calibration piece (6), and the dial indicator (5) is set to be 0;
s3: placing a second calibrating piece (6) on the positioning plate (22), checking whether the two measurement results are the diameter difference of the two calibrating pieces (6) or not in the same operation process of S1 and S2, and if the two measurement results are the diameter difference of the two calibrating pieces (6), proving that the lever ratio is correct;
s4: and repeating the steps of S1 and S1 to measure the circular hole of the tooth top of the internal spline, rotating the internal spline after the installation is finished, enabling the visual value of the dial indicator (5) to fluctuate between one step and the next step, enabling all the difference values to be qualified products within the diameter difference range, and after the inspection is finished, using the first calibrating piece (6) again to perform zero calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911325772.1A CN113008105A (en) | 2019-12-20 | 2019-12-20 | Internal spline tooth top circle diameter inspection fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911325772.1A CN113008105A (en) | 2019-12-20 | 2019-12-20 | Internal spline tooth top circle diameter inspection fixture |
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| Publication Number | Publication Date |
|---|---|
| CN113008105A true CN113008105A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911325772.1A Pending CN113008105A (en) | 2019-12-20 | 2019-12-20 | Internal spline tooth top circle diameter inspection fixture |
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| CN203642848U (en) * | 2013-12-12 | 2014-06-11 | 浙江双环传动机械股份有限公司 | Multifunctional caliper with meter |
| CN104344784A (en) * | 2014-11-26 | 2015-02-11 | 安徽工业大学 | Coaxiality detection device for different types of brake drums |
| CN210981108U (en) * | 2019-12-20 | 2020-07-10 | 长春市春求科技开发有限公司 | Internal spline tooth top circle diameter inspection fixture |
-
2019
- 2019-12-20 CN CN201911325772.1A patent/CN113008105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203489821U (en) * | 2013-09-28 | 2014-03-19 | 三门峡中泰量仪有限公司 | Measuring device for measuring diameter of addendum circle of synchronizer gear sleeve |
| CN203557129U (en) * | 2013-09-30 | 2014-04-23 | 南车戚墅堰机车车辆工艺研究所有限公司 | Rapid positioning device for pitch circle of internal spline gear |
| CN203642848U (en) * | 2013-12-12 | 2014-06-11 | 浙江双环传动机械股份有限公司 | Multifunctional caliper with meter |
| CN104344784A (en) * | 2014-11-26 | 2015-02-11 | 安徽工业大学 | Coaxiality detection device for different types of brake drums |
| CN210981108U (en) * | 2019-12-20 | 2020-07-10 | 长春市春求科技开发有限公司 | Internal spline tooth top circle diameter inspection fixture |
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