CN109990688B - Universal detection device for bottom diameter of piston ring groove - Google Patents
Universal detection device for bottom diameter of piston ring groove Download PDFInfo
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- CN109990688B CN109990688B CN201910372609.4A CN201910372609A CN109990688B CN 109990688 B CN109990688 B CN 109990688B CN 201910372609 A CN201910372609 A CN 201910372609A CN 109990688 B CN109990688 B CN 109990688B
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000007906 compression Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000003825 pressing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 101000872084 Danio rerio Delta-like protein B Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a universal detection device for bottom diameters of piston ring grooves, which belongs to the technical field of bottom diameter detection of piston ring grooves and comprises a dial indicator, a detection body, a measurement head shaft, a positioning sleeve and a measurement block, wherein the dial indicator is arranged at the top of the detection body, the measurement head shaft is axially and slidably arranged in the detection body, the positioning sleeve is sleeved at the periphery of the detection body, the measurement block is radially and slidably arranged at the bottom of the detection body, a swinging block capable of being linked with the measurement block is arranged in the detection body, one side of the positioning sleeve is provided with a first measurement blade, correspondingly, one side of the measurement block, which corresponds to the first measurement blade, is provided with a second measurement blade, one side of the measurement block, which is opposite to the second measurement blade, is provided with a compression spring, and the upper part of the measurement head shaft is provided with a return spring. The universal detection device for the bottom diameter of the piston ring groove can not only measure the bottom diameter of the piston ring groove, but also detect whether the central axis of the bottom diameter of the ring groove is eccentric with the central axis of each piston ring bank.
Description
Technical Field
The invention relates to the technical field of piston ring groove bottom diameter detection, in particular to a universal detection device for piston ring groove bottom diameter.
Background
Currently, for the piston shown in fig. 1, diameters of a piston ring groove a and a piston ring land b of the piston are measured by adopting a vernier caliper with a modified measuring claw or a special tool to be matched with a dial indicator and a standard rod. Although both can realize the measurement, because in the processing process, the piston with the conical structure (the top of the piston is conical) needs to process different outer surfaces (cylindrical surfaces and conical surfaces), and therefore, multiple clamping tool changing is needed, so that the offset exists between the ring groove bottom diameter central axis and each piston ring land central axis of the processed conical piston, and the traditional measuring tool cannot detect whether the ring groove bottom diameter central axis and each piston ring land central axis are eccentric or not, so that the measuring limitation exists.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides the universal detection device for the bottom diameter of the piston ring groove, which has the characteristics of compact structure, convenient use, strong universality and wide application range, and can be used for measuring the bottom diameter of the piston ring groove and detecting whether the center axis of the bottom diameter of the ring groove and the center axis of each piston ring bank are eccentric.
The technical scheme adopted by the invention is as follows: the utility model provides a general detection device of piston ring groove bottom diameter, belongs to piston ring groove bottom diameter and detects technical field, including the percentage table, still including examining specifically, gauge head axle, locating sleeve and measuring piece, the percentage table install at examining specifically the top, gauge head axle axial gliding install in examining specifically, the locating sleeve cover establish at examining specifically the periphery, measuring piece radial gliding installation examine specifically the bottom, examining specifically in be equipped with the pendulum block that can link measuring piece, locating sleeve one side be equipped with first measuring blade, correspondingly, measuring piece on one side that corresponds with first measuring blade be equipped with the second measuring blade, measuring piece on one side that is equipped with compression spring with the second measuring blade back, gauge head axle upper portion be equipped with return spring.
As a further improvement, the dial indicator is connected with the detecting body through a tightening cap, a lining is arranged between the tightening cap and the dial indicator, and a compression screw is screwed on one side of the tightening cap.
Further, an inner sleeve connected with the detection body is arranged at the bottom of the measurement block, an outer sleeve connected with the detection body is sleeved on the periphery of the inner sleeve, and a plurality of first steel balls are arranged between the inner sleeve and the outer sleeve.
Further, a positioning boss is arranged at the center of the bottom of the inner sleeve, a first inclined surface is arranged at the outer edge of the inner sleeve, a second inclined surface is arranged at the inner edge of the outer sleeve correspondingly, and the first steel ball is arranged in a V-shaped area surrounded by the first inclined surface and the second inclined surface.
Further, the pendulum block comprises two pendulum balls and a connecting arm for connecting the two pendulum balls, one side of the connecting arm is rotatably arranged in the detection tool through a rotary pin, the two pendulum balls are arranged on two sides of the connecting arm, the outer side spherical sections of the two pendulum balls are perpendicular, and the outer side spherical sections of the two pendulum balls are respectively connected with the measuring head shaft and the measuring block in a contact mode.
Further, the body bottom surface of examining be equipped with radial spout, this radial spout bottom surface center department is equipped with the center post hole, and the same side direction heavy groove of extending direction and radial spout has been seted up to this center post hole one side, and the pinhole has been seted up to this side direction heavy groove both sides, measurement piece slidable mounting in radial spout, gauge head axle one end slidable grafting in the center post hole, pendulum piece rotate and install in the side direction heavy groove, the pivot pin install in the pinhole.
Further, the locating sleeve is axially and slidably connected with the detecting body through a plurality of second steel balls, two V-shaped grooves are formed in the periphery of the detecting body, the second steel balls are arranged in the V-shaped grooves, an end cover is arranged at the top of the locating sleeve, scale marks are further arranged on the outer surface of the detecting body, and at least one locking screw is rotatably connected with the periphery of the locating sleeve.
Further, the positioning sleeve bottom be equipped with two briquetting of being connected rather than, correspondingly, the inspection body be equipped with briquetting complex axial arrangement's long waist shape through-hole, the inspection body in be equipped with extension spring, extension spring both ends be connected with briquetting, inspection body top respectively.
Further, the middle part of the measuring block is provided with a containing cavity for containing the swinging block, and a limiting block is arranged on the detecting body at one side behind the second measuring blade.
Further, the detection device also comprises a cushion block, a positioning center hole is formed in the center of the cushion block, and a magnet pin is embedded in the bottom of the cushion block.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
1. according to the universal detection device for the bottom diameter of the piston ring groove, the bottom diameter of the piston ring groove is propped by the first measuring blade and the bottom diameter of the piston ring groove is propped by the second measuring blade, and then the universal detection device is rotated around the piston, so that the bottom diameter of the piston ring groove can be measured, whether the center axis of the bottom diameter of the ring groove is eccentric with the center axis of each piston ring land can be detected, and the universal detection device has the characteristics of compact structure, convenience in use, strong universality and wide application range.
2. The measuring block and the measuring head shaft are linked through the swinging block, so that the conversion from a radial moving mode to an axial moving mode can be realized, the horizontal moving distance of the measuring block is ensured to be the same as the vertical moving distance of the measuring head shaft, and the requirement of measuring precision is met.
3. According to the invention, the locating sleeve is of an axially movable structure, so that the locating sleeve is suitable for measuring the bottom diameters of piston ring grooves with different axial heights, the application range is wide, meanwhile, the locating sleeve can be automatically reset through the design of the extension spring, and the circumferential rotation of the locating sleeve is limited through the cooperation of the second steel ball and the V-shaped groove, so that the locating sleeve is ingenious in structure and very convenient to use.
Drawings
FIG. 1 is a schematic diagram of a prior art piston;
FIG. 2 is a schematic diagram of a front view structure of the present invention
FIG. 3 is a left side view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is an enlarged schematic view of a portion of the structure of A-A in FIG. 2;
FIG. 6 is an enlarged schematic view of a part of the structure B-B in FIG. 3;
FIG. 7 is a schematic view of the structure of F-F in FIG. 4;
FIG. 8 is a schematic diagram showing the front view of the sample according to the present invention;
FIG. 9 is a schematic side view of an embodiment of the present invention;
FIG. 10 is a schematic top view of an embodiment of the present invention;
FIG. 11 is a schematic view of the bottom view of the sample embodiment of the present invention;
FIG. 12 is a schematic top view of a positioning sleeve according to the present invention;
FIG. 13 is a schematic diagram of the front view of a pendulum mass according to the present invention;
FIG. 14 is a schematic diagram of the front view of the measuring block of the present invention;
FIG. 15 is a schematic view of the front view of the inner sleeve of the present invention;
FIG. 16 is a schematic view of a front cross-sectional structure of a jacket according to the present invention;
FIG. 17 is a schematic view of a front cross-sectional structure of a pad of the present invention;
FIG. 18 is a schematic view showing the structure of the present invention in comparison with the table;
fig. 19 is a schematic view of the structure of the present invention in use.
Wherein: 1-dial gauge, 2-check body, 3-gauge head shaft, 4-positioning sleeve, 5-measuring block, 6-pendulum block, 7-first measuring blade, 8-second measuring blade, 9-compression spring, 10-return spring, 11-tight cap, 12-bushing, 13-compression screw, 14-inner sleeve, 15-outer sleeve, 16-first steel ball, 17-rotating pin, 18-second steel ball, 19-end cap, 20-locking screw, 21-press block, 22-extension spring, 23-stopper, 24-spacer block, 25-measured piston, 26-standard stepped cylinder, 2 a-radial chute, 2 b-center pillar hole, 2 c-lateral sink slot, 2 d-pin hole, 2 e-V-slot, 2 f-scale line, 2 g-long kidney-shaped through hole, 5 a-receiving cavity, 6 a-pendulum ball, 6 b-connecting arm, 14 a-positioning boss, 14 b-first inclined surface, 15 a-second inclined surface, 24 a-positioning center hole, 24 b-magnet pin, a-piston ring groove, and piston ring groove.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 2-17, the universal detecting device for the bottom diameter of the piston ring groove comprises a dial indicator 1, a detecting body 2, a measuring head shaft 3, a positioning sleeve 4 and a measuring block 5, wherein the dial indicator 1 is arranged at the top of the detecting body 2, the measuring head shaft 3 is axially and slidably arranged in the detecting body 2, the top of the measuring head shaft 3 is in contact connection with the bottom of the dial indicator 1, so that the measuring head shaft 3 links the dial indicator 1, the positioning sleeve 4 is sleeved on the periphery of the detecting body 2, the measuring block 5 is radially and slidably arranged at the bottom of the detecting body 2, a swinging block 6 capable of linking the measuring block 5 is arranged in the detecting body 2, when the measuring block 5 radially moves, the measuring block 5 pushes the swinging block 6 to swing, thereby pushing the measuring head shaft 3 to axially move, further changing the reading of the dial indicator 1, a first measuring blade 7 is arranged on one side of the positioning sleeve 4, a second measuring blade 8 is correspondingly arranged on the same side of the measuring block 5 as the first measuring blade 7, wherein the first measuring blade 7 is arc-shaped, the end surface is sharp-knife-shaped and can be inserted into the piston ring groove a, the second measuring blade 8 is arc-shaped and is used for propping against the piston ring land b, a compression spring 9 is arranged on the side of the measuring block 5 opposite to the second measuring blade 8, the two ends of the compression spring 9 are respectively connected with one side of the measuring block 5 and the detecting body 2, the elastic force is compressed for the measuring block 5, the reset spring 10 is arranged on the upper portion of the measuring head shaft 3, the two ends of the reset spring 10 are respectively connected with the measuring head shaft 3 and the detecting body 2, the reset elastic force is provided for the measuring head shaft 3, and the measuring head shaft is reset by means of dead weight and the elastic force of the reset spring 10 during measurement.
In this embodiment, the dial indicator 1 is connected with the test body 2 through the tightening cap 11, and a bushing 12 is arranged between the tightening cap 11 and the dial indicator 1, a compression screw 13 is screwed on one side of the tightening cap 11, and the bushing 12 is reversely jacked by the compression screw 13, so that the dial indicator 1 is clamped, the tightening cap 11 can be mounted at the top of the test body 2 through a bolt, and one end of the return spring 10 is connected with the tightening cap 11.
The measuring block 5 is provided with an inner sleeve 14 connected with the measuring body 2, an outer sleeve 15 connected with the measuring body 2 is sleeved on the outer periphery of the inner sleeve 14, the inner sleeve 14 and the outer sleeve 15 are connected with the measuring body 2 through bolts, a plurality of first steel balls 16 are arranged between the inner sleeve 14 and the outer sleeve 15, a first inclined surface 14b is arranged on the outer edge of the inner sleeve 14, a second inclined surface 15a is correspondingly arranged on the inner edge of the outer sleeve 15, the first steel balls 16 are arranged in a V-shaped area surrounded by the first inclined surface 14a and the second inclined surface 15a, and spherical tangent points of the first steel balls 16 are protruded on the lower surfaces of the inner sleeve 14 and the outer sleeve 15, so that a plane dense ball rolling plane is formed.
The pendulum block 6 comprises two pendulum balls 6a and a connecting arm 6b for connecting the two pendulum balls 6a, wherein one side of the connecting arm 6b is rotatably arranged in the detection body 2 through a rotary pin 17, the two pendulum balls 6a are arranged on two sides of the connecting arm 6b, the outer spherical tangential surfaces of the two pendulum balls 6a are vertical, the outer spherical tangential surfaces of the two pendulum balls 6a are respectively contacted and connected with the measuring head shaft 3 and the measuring block 5, the horizontal moving distance of the measuring block 5 is ensured to be the same as the vertical moving distance of the measuring head shaft 3, specifically, a radial chute 2a is arranged on the bottom surface of the detection body 2, a central column hole 2b is arranged in the center of the bottom surface of the radial chute 2a, a lateral sinking groove 2c with the extending direction same as that of the radial chute 2a is formed on one side of the central column hole 2b, pin holes 2d are formed on two sides of the lateral sinking groove 2c, wherein the measuring block 5 is slidably arranged in the radial chute 2a, one end of the measuring head shaft 3 is slidably inserted in the central column hole 2b, the pendulum block 6 is rotatably arranged in the lateral sinking groove 2c, the rotary pin 17 is arranged in the lateral sinking groove 2d, the measuring block 5 is pushed by pushing the measuring block 5a, and the other pendulum shaft 6 is axially moved by pushing the measuring block 3.
The positioning sleeve 4 is axially and slidably connected with the detecting body 2 through a plurality of second steel balls 18, wherein an arc sinking groove is formed in the positioning sleeve 4, two V-shaped grooves 2e are correspondingly formed in the periphery of the detecting body 2, the second steel balls 18 are arranged in the V-shaped grooves 2e and the arc sinking groove, height adjustment of the positioning sleeve 4 is achieved, measurement of ring groove bottom diameters with different axial heights is achieved, circumferential limit of the positioning sleeve 4 is achieved, rotation of the positioning sleeve 4 relative to the detecting body 2 is prevented, an end cover 19 is arranged at the top of the positioning sleeve 4, the second steel balls 18 are prevented from falling off, scale marks 2f are further arranged on the outer surface of the detecting body 2, the moving distance is indicated, an operator can conveniently use the positioning sleeve, at least one locking screw 20 is rotatably connected on the periphery of the positioning sleeve 4, the positioning sleeve 4 can be locked at the designated height, and the positioning sleeve 4 is prevented from moving circumferentially during use. Two pressing blocks 21 connected with the pressing blocks are arranged at the bottom of the positioning sleeve 4, the pressing blocks 21 are radially inserted into the bottom of the positioning sleeve 4, correspondingly, the detecting body 2 is provided with long waist-shaped through holes 2g which are axially matched with the pressing blocks 21, so that the pressing blocks 21 and the detecting body 2 are prevented from interfering, the positioning sleeve 4 is ensured to be capable of displacing up and down, an extension spring 22 is arranged in the detecting body 2, two ends of the extension spring 22 are respectively connected with the pressing blocks 21 and the top of the detecting body 2, an upward pulling force is provided for the positioning sleeve 4, the positioning sleeve 4 can automatically return, and in order to facilitate installation, clamping pins can be arranged at one end of the inner side of the pressing blocks 21 and on the tightening cap 11, two ends of the extension spring 22 are respectively connected with the clamping pins, so that quick installation is realized, and the manufacturing is also more convenient. The middle part of the measuring block 5 is provided with a containing cavity 5a for containing the swinging block 6, the swinging ball 6a can rotate in the containing cavity 5a so that the measuring block 5 pushes the swinging ball 6a, a limiting block 23 is arranged on the detecting body 2 on one side behind the second measuring blade 8 and used for limiting the measuring block 5, and before measurement, the measuring block 5 is attached to the limiting block 23 under the combined action of the dead weights of the swinging block 6 and the measuring head shaft 3 and the elasticity of the compression spring 9 and the return spring 10.
The detecting device in this embodiment further includes a spacer 24, the thickness of the spacer 24 should be adapted to the height of the piston ring bank of the first ring groove of the piston 25 to be detected, a positioning center hole 24a is provided in the center of the spacer 24, a positioning boss 14a of the inner sleeve 14 is positioned and inserted in the positioning center hole 24a, so as to realize quick centering installation of the device, and the two are in measuring tool level cooperation and can rotate relatively, a magnet pin 24b is embedded in the bottom of the spacer 24, so that the suction force of the spacer 24 for adsorbing the cast iron platform is increased, and the axis of the whole device is ensured not to change relative to the platform position in the whole measuring process.
In the detection device in this embodiment, as shown in fig. 18, the pad 24 is adsorbed on the working platform by the magnet pin 24 b; then the inner sleeve 14 is inserted and connected on the positioning center hole 24a of the cushion block 24 through the positioning boss 14a, then the standard ladder cylinder 26 (the calibration piece) is leaning against the device, the first measuring blade 7 is contacted with the phi 2 cylindrical surface of the standard ladder cylinder 26, the second measuring blade 8 is contacted with the phi 1 cylindrical surface, then the standard ladder cylinder 26 is pressed by hand, meanwhile, the device is repeatedly rotated clockwise and anticlockwise, and then the dial indicator 1 is positioned at the zero position. At this time, the distance between the first measuring blade 7 and the second measuring blade 8 is: Δh= (Φ1- Φ2)/2 is a known value that can be measured in advance.
In the measurement, as shown in fig. 19, after the comparison, the measured piston 25 is used to replace the standard stepped cylinder 26, the height of the positioning sleeve 4 is adjusted to enable the first measuring blade 7 to be in contact with the bottom surface of the piston ring groove a of the measured piston 25, the second measuring blade 8 to be in contact with the piston ring land B of the measured piston 25, then the measured piston 25 is pressed by hands, and meanwhile, the device is repeatedly rotated clockwise and anticlockwise by hands, the reading DeltaK (including positive and negative) of the dial indicator 1 is recorded, then the DeltaB is measured by an outside micrometer, and the DeltaH is combined according to the formula: Φa=Φb-2 (Δh+Δk), for example: knowing Δh=5 mm, Δk=0.04 mm, Φb=200 mm, Φa=200-2 (5+0.04) = 189.92mm. In the measuring process, the bottom diameters of the piston ring grooves a with different heights can be measured by adjusting the height of the positioning sleeve 4, and the application range is wide. When detecting whether the bottom diameter central axis of the piston ring groove a and the central axis of each piston ring land b are eccentric, the piston 25 to be measured can be rotated by a certain phase, the device can be repeatedly rotated at the position, the readings delta K of the dial indicator 1 are recorded, if the absolute values of the two delta K are different, the eccentric problem is indicated, and the measuring precision can be improved by measuring a plurality of different phases of the piston 25 to be measured.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (6)
1. The utility model provides a general detection device of piston ring groove bottom diameter, includes percentage table (1), its characterized in that still includes detection body (2), gauge head axle (3), spacer sleeve (4) and measurement piece (5), percentage table (1) install at the top of detection body (2), gauge head axle (3) axial slip install in detection body (2), spacer sleeve (4) cover establish at detection body (2) periphery, measurement piece (5) radial slip install detection body (2) bottom, detection body (2) in be equipped with pendulum piece (6) that can link measurement piece (5), spacer sleeve (4) one side be equipped with first measurement sword (7), correspondingly, measurement piece (5) on one side that corresponds with first measurement sword (7) be equipped with second measurement sword (8), measurement piece (5) on one side that is equipped with compression spring (9) with second measurement sword (8) back of the back, gauge head axle (3) upper portion be equipped with return spring (10); the measuring block (5) is characterized in that an inner sleeve (14) connected with the detecting body (2) is arranged at the bottom of the measuring block, an outer sleeve (15) connected with the detecting body (2) is sleeved on the periphery of the inner sleeve (14), a plurality of first steel balls (16) are arranged between the inner sleeve (14) and the outer sleeve (15), a positioning boss (14 a) is arranged at the center of the bottom of the inner sleeve (14), a first inclined surface (14 b) is arranged at the outer edge of the inner sleeve (14), a second inclined surface (15 a) is arranged at the inner edge of the outer sleeve (15), and the first steel balls (16) are arranged in a V-shaped area surrounded by the first inclined surface (14 b) and the second inclined surface (15 a); the utility model discloses a measuring device, including locating sleeve (4) bottom be equipped with two briquetting (21) rather than being connected, correspondingly, examine body (2) be equipped with briquetting (21) complex axial arrangement's long waist shape through-hole (2 g), examine body (2) in be equipped with extension spring (22), extension spring (22) both ends respectively with briquetting (21), examine body (2) top and be connected, measuring block (5) middle part be equipped with hold chamber (5 a) that hold pendulum mass (6), second measure and be equipped with stopper (23) on one side behind the back of sword (8) examine body (2).
2. The universal detection device for the bottom diameter of the piston ring groove according to claim 1, wherein the dial indicator (1) is connected with the detection body (2) through a tightening cap (11), a bushing (12) is arranged between the tightening cap (11) and the dial indicator (1), and a compression screw (13) is screwed on one side of the tightening cap (11).
3. The universal detection device for the bottom diameter of the piston ring groove according to claim 1, wherein the swinging block (6) comprises two swinging balls (6 a) and a connecting arm (6 b) for connecting the two swinging balls (6 a), one side of the connecting arm (6 b) is rotatably arranged in the detection body (2) through a rotary pin (17), the two swinging balls (6 a) and the like are arranged on two sides of the connecting arm (6 b), the outer spherical section of the two swinging balls (6 a) is perpendicular, and the outer spherical section of the two swinging balls (6 a) is respectively in contact connection with the measuring head shaft (3) and the measuring block (5).
4. A piston ring groove bottom diameter universal detection device according to claim 3, characterized in that the bottom surface of the detection body (2) is provided with a radial chute (2 a), a central column hole (2 b) is arranged at the center of the bottom surface of the radial chute (2 a), a lateral sinking groove (2 c) with the same extension direction as the radial chute (2 a) is arranged at one side of the central column hole (2 b), pin holes (2 d) are arranged at two sides of the lateral sinking groove (2 c), the measuring block (5) is slidably arranged in the radial chute (2 a), one end of the measuring head shaft (3) is slidably inserted in the central column hole (2 b), the swinging block (6) is rotatably arranged in the lateral sinking groove (2 c), and the rotating pin (17) is arranged in the pin holes (2 d).
5. The universal detection device for the bottom diameter of the piston ring groove according to claim 1, wherein the positioning sleeve (4) is axially and slidably connected with the detection body (2) through a plurality of second steel balls (18), two V-shaped grooves (2 e) are formed in the periphery of the detection body (2), the second steel balls (18) are arranged in the V-shaped grooves (2 e), an end cover (19) is arranged at the top of the positioning sleeve (4), graduation marks (2 f) are further arranged on the outer surface of the detection body (2), and at least one locking screw (20) is rotatably connected with the periphery of the positioning sleeve (4).
6. The universal detection device for bottom diameters of piston ring grooves according to any one of claims 1-5, further comprising a cushion block (24), wherein a positioning center hole (24 a) is formed in the center of the cushion block (24), and a magnet pin (24 b) is embedded in the bottom of the cushion block (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372609.4A CN109990688B (en) | 2019-05-06 | 2019-05-06 | Universal detection device for bottom diameter of piston ring groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372609.4A CN109990688B (en) | 2019-05-06 | 2019-05-06 | Universal detection device for bottom diameter of piston ring groove |
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| Publication Number | Publication Date |
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| CN109990688A CN109990688A (en) | 2019-07-09 |
| CN109990688B true CN109990688B (en) | 2024-04-09 |
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| CN201910372609.4A Active CN109990688B (en) | 2019-05-06 | 2019-05-06 | Universal detection device for bottom diameter of piston ring groove |
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