CN216954348U - Detection device for measuring half oblique angle of piston trapezoidal groove - Google Patents
Detection device for measuring half oblique angle of piston trapezoidal groove Download PDFInfo
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- CN216954348U CN216954348U CN202220388447.0U CN202220388447U CN216954348U CN 216954348 U CN216954348 U CN 216954348U CN 202220388447 U CN202220388447 U CN 202220388447U CN 216954348 U CN216954348 U CN 216954348U
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Abstract
The utility model provides a detection apparatus for be used for measuring half oblique angle in piston dovetail groove, which comprises a base, be fixed with linear guide on the base, feed the piece and detect the piece, the linear guide top is equipped with the slider, be equipped with the tang dish that supports the piston work piece on the slider, feed the piece and detect the piece and set up respectively in linear guide's right side, the left side, install the feed screw on feeding the piece, the feed screw left end offsets with tang dish right-hand member, wear to put the spacing chi on detecting the piece, the spacing chi right-hand member offsets with tang dish left end, the spacing chi left end is equipped with the spring, make the spacing chi have the trend that moves all the time to the right side and offsets with the tang dish, install the percentage table that is used for measuring spacing chi horizontal displacement volume in the left side of limiting chi, install the lever micrometer that is used for measuring piston work piece vertical displacement volume in the removal process in detecting the piece upper end. The utility model has the advantages of reasonable structure, convenient operation, high measurement precision, small error, low cost and good practical use and popularization value, and simultaneously improves the detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of mechanical manufacturing detection devices, and relates to a detection device for measuring a half bevel angle of a trapezoidal groove of a piston.
Background
The piston is one of the key parts of the engine and reciprocates in the engine cylinder. The piston ring is assembled in the piston dovetail groove and forms an airtight structure together with the engine cylinder sleeve. The half bevel angle of the piston dovetail groove is one of important assembly sizes, if the size is out of tolerance, the sealing function of a piston assembly can be influenced, further, the power of an engine is insufficient, the oil consumption is increased, and the like, and even the cylinder-pulling fault of the engine is caused in severe cases. Usually, the half bevel angle of the piston dovetail groove is detected by a three-coordinate measuring instrument, but the three-coordinate measuring instrument is high in equipment price, high in detection cost and long in detection time, and the requirement of process control in batch production is difficult to meet.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a detection device for measuring the half bevel angle of a piston trapezoidal groove, which has the advantages of reasonable structure, convenience in operation and high precision.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a detection apparatus for be used for measuring piston dovetail groove half bevel, its characterized in that: the detection device comprises a base, a linear guide rail, a feeding block and a detection block are fixed on the base, a sliding block capable of sliding left and right along the linear guide rail is arranged above the linear guide rail, a spigot disc for supporting and positioning a piston workpiece is arranged on the sliding block, the upper end surface of the spigot disc is an inclined plane, the inclined angle of the spigot disc is the same as the half-bevel angle standard value of a dovetail groove to be measured, the piston workpiece is arranged on the spigot disc, the central axis of the piston workpiece and the linear motion axis of the sliding block are on the same plane, the feeding block and the detection block are respectively arranged on the right side and the left side of the linear guide rail, a feeding screw is arranged on the feeding block in a threaded manner, the left end of the feeding screw abuts against the right end of the spigot disc, a limiting ruler is arranged on the detection block in a penetrating manner, the right end of the limiting ruler abuts against the left end of the spigot disc, a spring is arranged at the left end of the limiting ruler, the limiting ruler has a trend of always moving right to abut against the spigot disc, a dial indicator for measuring the horizontal displacement of the limiting ruler is arranged at the left side of the limiting ruler, and a lever dial indicator for measuring the vertical displacement of the piston workpiece in the moving process is arranged at the upper end of the detection block.
As an improvement, the left end of the inclined plane of the upper end of the spigot disc is lower than the right end, the spigot disc is provided with a spigot seat corresponding to the piston workpiece, the piston workpiece is positioned and arranged on the spigot disc through the spigot seat, the horizontal inclination angle of the spigot seat is the same as the standard value of the half-inclination angle of the trapezoidal groove to be measured, and when the piston workpiece is positioned on the spigot disc, the measuring trapezoidal surface of the half-inclination angle of the trapezoidal groove of the piston workpiece is in a substantially horizontal state.
Furthermore, the longitudinal section of the feeding block is L-shaped, a threaded hole with the same height as the spigot disc is formed in the upper portion of the feeding block, the axis of the threaded hole and the central axis of the piston workpiece are on the same plane, the feeding screw is installed in the threaded hole of the feeding block, a spherical steel ball in point contact with the spigot disc is arranged at the left end of the feeding screw, and linear motion of the spigot disc along the direction of the linear guide rail can be achieved by rotating the feeding screw.
Furthermore, the longitudinal section of the detection block is L-shaped, the height of the detection block is higher than that of the dovetail groove of the piston workpiece, a limiting ruler installation hole as high as the spigot disc and a lever dial indicator installation hole as high as the dovetail groove of the piston workpiece are formed in the detection block, and the axes of the two installation holes and the central axis of the piston workpiece are on the same plane.
Still further, the spacing chi can control spacing wearing to establish in the spacing chi mounting hole of detecting the piece with spacing, and the middle section of spacing chi is equipped with spacing boss, and the diameter of spacing boss is greater than the diameter of spacing chi mounting hole, and spacing chi supports spacingly through the left end of spacing boss with detecting the piece, and the right-hand member of spacing chi is equipped with the spherical steel ball that keeps point contact with the tang dish.
Still further, install a spring stopper on detecting the piece, the diameter of spacing boss is greater than the diameter of spring, and the spring housing is established at the left end of spacing chi, supports between spring stopper and spacing boss.
And furthermore, a dial indicator mounting hole with the same axis as the limiting ruler mounting hole of the detection block is formed in the spring limiting block, the diameter of the dial indicator mounting hole is smaller than that of the spring, the dial indicator is mounted in the dial indicator mounting hole, and the measuring head of the dial indicator is in contact with the limiting ruler.
And finally, the dial indicator is arranged in a dial indicator mounting hole of the detection block, and a measuring head of the dial indicator is in contact with the trapezoidal surface to be measured of the piston workpiece.
Compared with the prior art, the utility model has the advantages that: the feeding screw and the spherical bottom end of the limiting ruler are in point contact with the spigot disc, the spigot disc is pushed to linearly move along the direction of the linear guide rail by rotating the feeding screw, so that the limiting ruler is driven to horizontally displace, the horizontal displacement of a piston workpiece can be read by the dial indicator, the vertical displacement of the trapezoidal surface in the moving process is measured by the lever dial indicator, the data displayed by the dial indicator and the lever indicator are integrated, the angle of the half bevel angle of the trapezoidal groove of the piston is calculated by using an inverse trigonometric function, and the limit deviation of the half bevel angle of the trapezoidal groove can be converted into the limit deviation of the vertical displacement under the condition that the horizontal displacement is fixed; the spring, the limiting ruler and the spring limiting block jointly form a reset mechanism, and the limiting ruler can push the spigot disc to linearly move along the direction of the linear guide rail under the action of the spring by utilizing the reverse rotation feeding screw, so that the workpiece is reset. The utility model has reasonable structure, convenient operation and high positioning precision, improves the detection efficiency, simplifies the conversion process of the measurement data while ensuring the detection precision of the half bevel angle of the trapezoidal groove, is convenient for the process control of the piston production and has lower cost. The utility model can realize the accurate measurement of the half bevel angle of the dovetail groove of the piston workpiece, has high detection efficiency and small measurement error, and has good practical use and popularization value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in figure 1, a detection device for measuring a trapezoid groove half bevel angle of a piston comprises a base 7, a linear guide rail 9 fixedly arranged on the base 7, a feeding block 12 and a detection block 6, wherein a slide block 8 capable of sliding left and right along the linear guide rail 9 is arranged above the linear guide rail 9, a spigot disc 11 for supporting and positioning a piston workpiece 10 is arranged on the slide block 8, the upper end surface of the spigot disc 11 is an inclined plane, the inclined angle of the spigot disc 11 is the same as the standard value of the trapezoid groove half bevel angle to be measured, the piston workpiece 10 is arranged on the spigot disc 11, the central axis of the piston workpiece is in the same plane with the linear motion axis of the slide block 8, the feeding block 12 and the detection block 6 are respectively arranged on the right side and the left side of the linear guide rail 9, a feeding screw 13 is arranged on the feeding block 12 in a threaded manner, the left end of the feeding screw 13 abuts against the right end of the spigot disc 11, a limit ruler 3 is arranged on the detection block 6 in a penetrating manner, the right end of the limit ruler 3 abuts against the left end of the spigot disc 11, the left end of limiting ruler 3 is equipped with spring 5, makes limiting ruler 3 have and moves the trend that offsets with spigot dish 11 all the time to the right, installs percentage table 4 that is used for measuring limiting ruler 3 horizontal displacement volume in limiting ruler 3's left side, installs the lever micrometer 1 that is used for measuring the vertical displacement volume of piston work piece 10 at the removal in-process in the upper end that detects piece 6.
The concrete structure is as follows: the left end of the inclined plane of the upper end of the spigot disc 11 is lower than the right end, the spigot disc 11 is provided with a spigot seat corresponding to the piston workpiece 10, the piston workpiece 10 is positioned and arranged on the spigot disc 11 through the spigot seat, the horizontal inclination angle of the spigot seat is the same as the standard value of the half-inclined angle of the trapezoidal groove to be measured, and when the piston workpiece 10 is positioned on the spigot disc 11, the measuring trapezoidal surface of the half-inclined angle of the trapezoidal groove of the piston workpiece 10 is in a substantially horizontal state. The longitudinal section of the feeding block 12 is L-shaped, a threaded hole with the same height as the stop disc 11 is formed in the upper portion of the feeding block 12, the axis of the threaded hole 11 and the central axis of the piston workpiece 10 are on the same plane, a feeding screw 13 is installed in the threaded hole of the feeding block 12, a spherical steel ball in point contact with the stop disc 11 is arranged at the left end of the feeding screw 13, and linear motion of the stop disc 11 along the direction of the linear guide rail 9 can be achieved by rotating the feeding screw 13. The longitudinal section of the detection block 6 is L-shaped, the height of the detection block is higher than that of a dovetail groove of the piston workpiece 10, a limiting ruler installation hole which is as high as the spigot disc 11 and a lever dial indicator installation hole which is as high as that of the dovetail groove of the piston workpiece 10 are formed in the detection block 6, and the axes of the two installation holes and the central axis of the piston workpiece 10 are on the same plane. The limiting ruler 3 can be slidably arranged in a limiting ruler mounting hole of the detection block 6 in a left-right limiting manner, a limiting boss is arranged at the middle section of the limiting ruler 3, the diameter of the limiting boss is larger than that of the limiting ruler mounting hole, the limiting ruler 3 abuts against the left end of the detection block 6 through the limiting boss for limiting, and a spherical steel ball which is in point contact with the spigot disc 11 is arranged at the right end of the limiting ruler 3; the detection block 6 is provided with a spring limiting block 2, the diameter of the limiting boss is larger than that of the spring 5, and the spring 5 is sleeved at the left end of the limiting ruler 3 and supported between the spring limiting block 2 and the limiting boss; the spring limiting block 2 is provided with a dial indicator mounting hole which is equal to the limiting ruler mounting hole of the detection block 6 in the same axis, the diameter of the dial indicator mounting hole is smaller than that of the spring 5, the dial indicator 4 is mounted in the dial indicator mounting hole, a measuring head of the dial indicator 4 is in contact with the limiting ruler 3, and the horizontal displacement of the limiting ruler 3 can be measured. The dial indicator 1 is installed in a dial indicator installation hole of the detection block, a measuring head of the dial indicator 1 is in contact with a trapezoidal surface to be measured of the piston workpiece 10, and the vertical displacement of the trapezoidal surface in the moving process can be measured.
The specific working principle is as follows:
the feeding screw 12 and the spherical bottom end of the limiting ruler 3 are in point contact with the spigot disc 11, and the spigot disc 11 is pushed to linearly move along the linear guide rail 9 by rotating the feeding screw 12, so that the limiting ruler 3 is driven to horizontally displace. The measuring head of the dial indicator 4 is in contact with the limiting ruler 3 to display the horizontal displacement of the piston workpiece 10, and the measuring head of the lever dial indicator 1 is in contact with the trapezoidal surface to be measured of the piston workpiece 10 to measure the vertical displacement of the trapezoidal surface in the moving process. Spring 5, spacing chi 3 and spring stopper 2 have constituteed canceling release mechanical system jointly, utilize reverse rotation feed screw 12 can make spacing chi 3 push stop plate 11 along linear guide 9 direction linear motion under the effect of spring 5, realize piston work piece 10 and reset. And (3) integrating the data displayed by the dial indicator 4 and the dial indicator 1, and calculating the angle of the half bevel angle of the trapezoidal groove of the piston by using an inverse trigonometric function. Under the condition that the horizontal displacement is fixed, the extreme deviation of the half bevel angle of the trapezoidal groove can be converted into the extreme deviation of the vertical displacement.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a detection apparatus for be used for measuring piston dovetail groove half bevel, its characterized in that: the detection device comprises a base, a linear guide rail, a feeding block and a detection block are fixed on the base, a sliding block capable of sliding left and right along the linear guide rail is arranged above the linear guide rail, a spigot disc for supporting and positioning a piston workpiece is arranged on the sliding block, the upper end surface of the spigot disc is an inclined plane, the inclination angle of the spigot disc is the same as the standard value of the half-bevel angle of a dovetail groove to be measured, the piston workpiece is arranged on the spigot disc, the central axis of the piston workpiece is on the same plane with the linear motion axis of the sliding block, the feeding block and the detection block are respectively arranged on the right side and the left side of the linear guide rail, a feeding screw is arranged on the feeding block in a threaded manner, the left end of the feeding screw abuts against the right end of the spigot disc, a limit ruler is arranged on the detection block in a penetrating manner, the right end of the limit ruler abuts against the left end of the spigot disc, a spring is arranged at the left end of the limit ruler, the limit ruler has a tendency of always abutting against the spigot disc, a dial indicator for measuring the horizontal displacement of the limit ruler is arranged on the left side of the limit ruler in a right direction, and a lever dial indicator for measuring the vertical displacement of the piston workpiece in the moving process is arranged at the upper end of the detection block.
2. The detection device according to claim 1, wherein: the left end of the inclined plane of the upper end of the spigot disc is lower than the right end, the spigot disc is provided with a spigot seat corresponding to the piston workpiece, the piston workpiece is positioned on the spigot disc through the spigot seat, the horizontal inclination angle of the spigot seat is the same as the standard value of the half-bevel angle of the trapezoidal groove to be measured, and when the piston workpiece is positioned on the spigot disc, the measuring trapezoidal surface of the half-bevel angle of the trapezoidal groove of the piston workpiece is in a substantially horizontal state.
3. The detection device according to claim 1, wherein: the longitudinal section of the feeding block is L-shaped, a threaded hole with the same height as the spigot disc is formed in the upper portion of the feeding block, the axis of the threaded hole and the central axis of the piston workpiece are on the same plane, the feeding screw is installed in the threaded hole of the feeding block, a spherical steel ball in point contact with the spigot disc is arranged at the left end of the feeding screw, and linear motion of the spigot disc along the direction of the linear guide rail can be achieved by rotating the feeding screw.
4. The detection device according to claim 1, wherein: the longitudinal section of the detection block is L-shaped, the height of the detection block is higher than that of the dovetail groove of the piston workpiece, a limiting ruler mounting hole as high as the spigot disc and a lever micrometer mounting hole as high as that of the dovetail groove of the piston workpiece are formed in the detection block, and the axes of the two mounting holes and the central axis of the piston workpiece are on the same plane.
5. The detection device according to claim 4, wherein: the limiting ruler can be arranged in a limiting ruler mounting hole of the detection block in a left-right limiting sliding mode, a limiting boss is arranged in the middle section of the limiting ruler, the diameter of the limiting boss is larger than that of the limiting ruler mounting hole, the limiting ruler is in abutting limit with the left end of the detection block through the limiting boss, and a spherical steel ball in point contact with the spigot disc is arranged at the right end of the limiting ruler.
6. The detection device according to claim 5, wherein: the detection block is provided with a spring limiting block, the diameter of the limiting boss is larger than that of the spring, and the spring sleeve is arranged at the left end of the limiting ruler and supported between the spring limiting block and the limiting boss.
7. The detection device according to claim 6, wherein: the spring limiting block is provided with a dial indicator mounting hole with the same axis as a limiting ruler mounting hole of the detection block, the diameter of the dial indicator mounting hole is smaller than that of the spring, the dial indicator is mounted in the dial indicator mounting hole, and a measuring head of the dial indicator is in contact with the limiting ruler.
8. The detection device according to claim 4, wherein: the dial indicator is arranged in a dial indicator mounting hole of the detection block, and a measuring head of the dial indicator is in contact with the trapezoidal surface to be measured of the piston workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220388447.0U CN216954348U (en) | 2022-02-25 | 2022-02-25 | Detection device for measuring half oblique angle of piston trapezoidal groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220388447.0U CN216954348U (en) | 2022-02-25 | 2022-02-25 | Detection device for measuring half oblique angle of piston trapezoidal groove |
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| Publication Number | Publication Date |
|---|---|
| CN216954348U true CN216954348U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220388447.0U Active CN216954348U (en) | 2022-02-25 | 2022-02-25 | Detection device for measuring half oblique angle of piston trapezoidal groove |
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| Country | Link |
|---|---|
| CN (1) | CN216954348U (en) |
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2022
- 2022-02-25 CN CN202220388447.0U patent/CN216954348U/en active Active
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