CN111102899A - Three-pin shaft indexing gauge - Google Patents
Three-pin shaft indexing gauge Download PDFInfo
- Publication number
- CN111102899A CN111102899A CN202010006390.9A CN202010006390A CN111102899A CN 111102899 A CN111102899 A CN 111102899A CN 202010006390 A CN202010006390 A CN 202010006390A CN 111102899 A CN111102899 A CN 111102899A
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- Prior art keywords
- pin
- disc
- shaft
- bottom plate
- dial indicator
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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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- 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
- G01B5/0025—Measuring of vehicle parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a three-pin-shaft indexing gauge, which relates to the field of pin shaft measurement and comprises a bottom plate, a reference mandrel and a positioning pin; a disc is arranged on the bottom plate, a through mounting hole is formed in the middle of the disc, one end of the reference mandrel penetrates through the mounting hole and is fixedly connected with the bottom plate, and a positioning pin is fixed at the upper end of the disc and used for limiting the three pin shafts; one side of the disc is provided with a measuring device for measuring the chord-center distance of the shaft neck, the measuring device comprises a fixed support arranged on the bottom plate, and a dial indicator is arranged on the fixed support. The gauge has the characteristics of simple structure, reasonable layout, convenience in processing and manufacturing, convenience in measuring operation and reading and the like, also solves the technical problem of measuring the indexing angle of the three-pin shaft three-axis neck, and provides rich actual combat experience for the measurement of similar parts.
Description
Technical Field
The invention relates to the field of pin shaft measurement, in particular to a three-pin shaft indexing gauge.
Background
The three-pin shaft is an important part of the constant-speed universal joint transmission shaft moving joint of the car, the requirements on mechanical performance and appearance structure are very strict, and the manufacturing difficulty is very high. The three-pin shaft is used as a basic part, and the three-pin shaft fork are matched to form the three-locking joint which is used for transmitting power generated by an automobile engine to an automobile wheel shaft and playing a role in transmitting the power. The three-pin universal joint has great influence on the assembly of an automobile, and the machining of the three-pin universal joint has higher requirements on the concentricity and the coaxiality of a product due to the structural characteristics of the three-pin universal joint. The special checking tool needs to be manufactured in the prior art for measuring the indexing size of the three-pin shaft neck, and the special checking tool is ordered by manufacturers, so that the price is high, the manufacturing period is long, and common small and medium-sized enterprises cannot adapt to the special checking tool, so that a new measuring tool is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a three-pin shaft indexing gauge which has the characteristics of simple structure, reasonable layout, convenience in processing and manufacturing, convenience in measuring, operating and reading and the like, solves the technical problem of measuring the three-pin shaft three-shaft neck indexing angle, and provides rich practical experience for measuring similar parts.
The purpose of the invention is realized by the following technical scheme:
a three-pin-shaft indexing gauge comprises a bottom plate, a reference mandrel and a positioning pin; a disc is arranged on the bottom plate, a through mounting hole is formed in the middle of the disc, one end of the reference mandrel penetrates through the mounting hole and is fixedly connected with the bottom plate, and a positioning pin is fixed at the upper end of the disc and used for limiting the three pin shafts; one side of the disc is provided with a measuring device for measuring the chord-center distance of the shaft neck, the measuring device comprises a fixed support arranged on the bottom plate, and a dial indicator is arranged on the fixed support.
By adopting the technical scheme, the three pin shafts to be measured are arranged on the reference mandrel in a penetrating mode, one end of the reference mandrel is arranged in a penetrating mounting hole formed in the middle of the disc in a penetrating mode, the three pin shafts can rotate around the reference mandrel, and meanwhile under the action of the positioning pins, the three pin shafts can be limited when being measured; one side of the disc is provided with a measuring device which comprises a fixed support arranged on the bottom plate and a dial indicator arranged on the fixed support, wherein the dial indicator is used for reading out a numerical value for measuring the chord center distance of the shaft neck of the three-pin shaft; the gauge has the characteristics of simple structure, reasonable layout, convenience in processing and manufacturing, convenience in measuring operation and reading and the like, also solves the technical problem of measuring the indexing angle of the three-pin shaft three-axis neck, and provides rich actual combat experience for the measurement of similar parts.
Preferably, the lower part of the base mandrel is sleeved with a torsion spring, the torsion spring is arranged in the mounting hole, one end of the torsion spring is fixedly connected with the bottom plate, the other end of the torsion spring is connected with a three-pin shaft to be measured, and the torsion spring is used for enabling the three-pin shaft to generate torsion when rotating along the base mandrel.
By adopting the technical scheme, one end of the torsion spring is fixedly connected with the bottom plate, the other end of the torsion spring is connected with the three pin shafts to be measured, the torsion spring rotates at the three pin shafts, the three pin shafts can generate rotary torsion under the action of the torsion spring, and one shaft neck of the three pin shafts can abut against the positioning pin, so that the three pin shafts are kept stable, and the measurement is convenient.
Preferably, the disc is fixed to the base plate.
Through adopting above-mentioned technical scheme, the disc is fixed at the bottom plate, and the bottom plate gives a supporting platform for the disc, is convenient for support the extremely upper structure of mounting plate.
Preferably, the fixing support is provided with a dial indicator mounting hole, a measuring rod of the dial indicator is arranged in the dial indicator mounting hole, the fixing support is provided with a threaded hole, the threaded hole is communicated with the dial indicator mounting hole and is perpendicular to the mounting hole, a fixing screw rod is connected with the threaded hole in an internal thread mode, and one end of the fixing screw rod is provided with a rotating handle.
By adopting the technical scheme, the fixed support can provide a support platform for the dial indicator and the connecting structure thereof, so that the positions of the measuring rod and the three pin shafts of the dial indicator can be conveniently adjusted, and the measurement of the dial indicator is more accurate; the rotating handle is rotated to enable the fixing screw rod to fix and limit the measuring rod which penetrates through the rotating handle, so that the stability of the dial indicator on the fixing support is ensured.
The invention has the beneficial effects that:
1. the checking fixture is characterized in that a three-pin shaft to be measured penetrates through a reference mandrel, one end of the reference mandrel penetrates through a penetrating mounting hole formed in the middle of a disc, the three-pin shaft can rotate around the reference mandrel, and meanwhile, under the action of a positioning pin, the three-pin shaft can be limited when being measured; one side of the disc is provided with a measuring device which comprises a fixed support arranged on the bottom plate and a dial indicator arranged on the fixed support, wherein the dial indicator is used for reading out a numerical value for measuring the chord center distance of the shaft neck of the three-pin shaft; the gauge has the characteristics of simple structure, reasonable layout, convenience in processing and manufacturing, convenience in measuring operation and reading and the like, also solves the technical problem of measuring the indexing angle of the three-pin shaft three-axis neck, and provides rich actual combat experience for the measurement of similar parts.
2. One end of the torsion spring is fixedly connected with the bottom plate, the other end of the torsion spring is connected with a three-pin shaft to be measured, the torsion spring rotates on the three-pin shaft, the three-pin shaft can generate rotary torsion under the action of the torsion spring, and a shaft neck of the three-pin shaft can abut against the positioning pin, so that the three-pin shaft is kept stable, and the measurement is convenient; the disc is fixed on the bottom plate, and the bottom plate provides a supporting platform for the disc, so that the structure of the extremely upper part of the bottom plate can be conveniently supported and installed; the fixed support can provide a support platform for the dial indicator and the connecting structure thereof, so that the positions of the measuring rod and the three pin shafts of the dial indicator can be adjusted conveniently, and the measurement of the dial indicator is more accurate; the rotating handle is rotated to enable the fixing screw rod to fix and limit the measuring rod which penetrates through the rotating handle, so that the stability of the dial indicator on the fixing support is ensured.
Drawings
FIG. 1 is a schematic structural view of a three-pin-shaft indexing fixture according to the present invention;
FIG. 2 is a schematic view of an overall measurement structure of a three-pin-shaft indexing fixture according to the present invention;
in the figure, 1-dial indicator, 2-bottom plate, 3-locating pin, 4-reference mandrel, 5-three-pin shaft, 6-fixed support, 7-torsion spring, 8-disc, 61-fixed screw.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1 to 2, the three-pin indexing fixture is characterized by comprising a base plate 2, a reference mandrel 4 and a positioning pin 3; a disc 8 is arranged on the bottom plate 2, a through mounting hole is formed in the middle of the disc 8, one end of a reference mandrel 4 penetrates through the mounting hole to be fixedly connected with the bottom plate 8, a positioning pin 3 is fixed at the upper end of the disc 8, and the positioning pin 3 is used for limiting the three-pin shaft 5; one side of the disc 8 is provided with a measuring device for measuring the chord-center distance of the shaft neck, the measuring device comprises a fixed support 6 arranged on the bottom plate 2, and the fixed support 6 is provided with a dial indicator 1. According to the gauge, a three-pin shaft 5 to be measured penetrates through a reference mandrel 4, one end of the reference mandrel 4 penetrates through a through mounting hole formed in the middle of a disc 8, the three-pin shaft 5 can rotate around the reference mandrel 4, and meanwhile, under the action of a positioning pin 3, the three-pin shaft 5 can be limited when being measured; the disc 8 is fixed on the bottom plate 2, one side of the disc 8 is provided with a measuring device which comprises a fixed support 6 arranged on the bottom plate 2 and a dial indicator 1 arranged on the fixed support 6, and the dial indicator 1 is used for reading out numerical values of chord center distances of journals of the three pin shafts; the gauge has the characteristics of simple structure, reasonable layout, convenience in processing and manufacturing, convenience in measuring operation and reading and the like, also solves the technical problem of measuring the indexing angle of the three-pin shaft three-axis neck, and provides rich actual combat experience for the measurement of similar parts.
Further, the measuring device comprises a fixed support 6 arranged on the bottom plate 2 and a dial indicator 1 arranged on the fixed support 6, wherein the dial indicator 1 is used for reading the numerical value of the chord center distance of the shaft neck of the three-pin shaft 5 to be measured; a dial indicator mounting hole is formed in the fixed support 6, a measuring rod of the dial indicator 1 is arranged in the dial indicator mounting hole, a threaded hole is formed in the fixed support 6, the threaded hole is communicated with the dial indicator mounting hole and is perpendicular to the mounting hole, a fixed screw rod 61 is connected with the threaded hole in a threaded manner, and a rotating handle is arranged at one end of the fixed screw rod 61; the fixed support 6 can provide a support platform for the dial indicator 1 and the connecting structure thereof, so that the positions of a measuring rod and the three-pin shaft 5 of the dial indicator 1 can be adjusted conveniently, and the dial indicator 1 can be measured more accurately; the rotating handle is rotated to enable the fixing screw rod 61 to fix and limit the measuring rod which penetrates through the rotating handle, and the stability of the dial indicator 1 on the fixing support 6 is guaranteed. The lower part of the base mandrel 4 is sleeved with a torsion spring 7, the torsion spring 7 is arranged in the mounting hole, one end of the torsion spring 7 is fixedly connected with the bottom plate 2, the other end of the torsion spring 7 is connected with a three-pin shaft 5 to be measured, the torsion spring 7 is used for enabling the three-pin shaft 5 to generate torsion when rotating along the reference mandrel 4, the torsion spring rotates at the three-pin shaft 5, the three-pin shaft 5 can generate rotary torsion under the action of the torsion spring 7, and a shaft neck of the three-pin shaft 5 can abut against the positioning pin 3 to enable the three-pin shaft 5 to be kept stable, so that the dial indicator 1 can measure the shaft neck of the dial indicator.
The gauge is mainly a universal gauge for measuring the span rod distance size of the involute internal spline in the embodiment, and when the gauge is used specifically, a dial indicator 1 of a measuring device of the gauge is adjusted to enable the initial reading of the dial indicator to return to zero; the three-pin shaft 3 for detection is tightly matched and connected with the reference mandrel 4 through the middle mounting hole and rotates anticlockwise, one pin shaft of the three-pin shaft 5 is enabled to be close to the positioning pin 3 under the action of rotating torque force through the reverse action of the torque spring 7, so that the three-pin shaft 5 is kept fixed, then the dial indicator 1 on the fixed support 6 is adjusted, the measuring rod of the dial indicator 1 vertically abuts against one pin shaft of the fixed three-pin shaft 5 at the moment, the reading of the dial indicator 1 at the moment is read, and the reading is recorded.
Taking the three pin shafts 5 to be measured from the reference mandrel 4, sequentially rotating the three pin shafts to the other two pin shafts, reading the readings on the dial indicator 1 according to the steps and recording the readings at the moment; and comparing the difference of the data measured in three times with the tolerance of the difference of the actually designed shaft neck, and if the difference exceeds the theoretical difference range, indicating that the indexing tolerance is out of tolerance and the three-pin shaft is unqualified.
One end of a torsion spring 7 of the checking fixture penetrates through the cavity of the disc 8 and is connected with the bottom end of the three-pin shaft 5, and in the connecting structure, the bottom end of the three-pin shaft 5 is provided with a groove for stabilizing the torsion spring 7, so that the three-pin shaft 5 can be taken down and can be matched with the torsion spring 7, and the design of the spring clamp is the same; the micrometer 1 is also a common length measuring instrument, and in this embodiment, the micrometer 1 measures the chord center distance of the shaft neck, which is the prior art and not described herein.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The three-pin-shaft indexing gauge is characterized by comprising a base plate (2), a reference mandrel (4) and a positioning pin (3);
a disc (8) is arranged on the bottom plate (2), a through mounting hole is formed in the middle of the disc (8), one end of the reference mandrel (4) penetrates through the mounting hole to be fixedly connected with the bottom plate (8), a positioning pin (3) is fixed at the upper end of the disc (8), and the positioning pin (3) is used for limiting the three-pin shaft (5); one side of the disc (8) is provided with a measuring device for measuring the chord-center distance of the shaft neck, the measuring device comprises a fixed support (6) arranged on the bottom plate (2), and the fixed support (6) is provided with a dial indicator (1).
2. The three-pin-shaft indexing gauge according to claim 1, wherein a torsion spring (7) is sleeved on the lower portion of the base mandrel (4), the torsion spring (7) is arranged in the mounting hole, one end of the torsion spring (7) is fixedly connected with the bottom plate (2), the other end of the torsion spring (7) is connected with the three pin shaft (5) to be measured, and the torsion spring (7) is used for enabling the three pin shaft (5) to generate torsion when rotating along the reference mandrel (4).
3. The three-pin indexing fixture according to claim 1, wherein the disc (8) is fixed to the base plate (2).
4. The three-pin shaft indexing gauge according to claim 1, wherein a dial indicator mounting hole is formed in the fixing support (6), a measuring rod of the dial indicator (1) is arranged in the dial indicator mounting hole, a threaded hole is formed in the fixing support (6), the threaded hole is communicated with the dial indicator mounting hole and perpendicular to the mounting hole, a fixing screw (61) is connected to the threaded hole in a threaded manner, and a rotating handle is arranged at one end of the fixing screw (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006390.9A CN111102899A (en) | 2020-01-03 | 2020-01-03 | Three-pin shaft indexing gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010006390.9A CN111102899A (en) | 2020-01-03 | 2020-01-03 | Three-pin shaft indexing gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111102899A true CN111102899A (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010006390.9A Pending CN111102899A (en) | 2020-01-03 | 2020-01-03 | Three-pin shaft indexing gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111102899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091555A (en) * | 2021-04-15 | 2021-07-09 | 浙江康普瑞汽车零部件有限公司 | Three-pin detection method |
| CN113091554A (en) * | 2021-04-15 | 2021-07-09 | 浙江康普瑞汽车零部件有限公司 | Three round pin axle detection mechanism |
-
2020
- 2020-01-03 CN CN202010006390.9A patent/CN111102899A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091555A (en) * | 2021-04-15 | 2021-07-09 | 浙江康普瑞汽车零部件有限公司 | Three-pin detection method |
| CN113091554A (en) * | 2021-04-15 | 2021-07-09 | 浙江康普瑞汽车零部件有限公司 | Three round pin axle detection mechanism |
| CN113091555B (en) * | 2021-04-15 | 2022-09-20 | 浙江康普瑞汽车零部件有限公司 | Three-pin detection method |
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