CN115060148A - Coaxiality gauge for cylinder cover - Google Patents
Coaxiality gauge for cylinder cover Download PDFInfo
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- CN115060148A CN115060148A CN202210894371.3A CN202210894371A CN115060148A CN 115060148 A CN115060148 A CN 115060148A CN 202210894371 A CN202210894371 A CN 202210894371A CN 115060148 A CN115060148 A CN 115060148A
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- gauge
- coaxiality
- cylinder cover
- measuring
- cylinder head
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- 238000007906 compression Methods 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 24
- 238000012545 processing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 20
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G01B5/24—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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- 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
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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
- G01B5/003—Measuring of motor parts
Abstract
The invention belongs to the technical field of cylinder cover production and processing, and provides a coaxiality gauge for a cylinder cover, which comprises a gauge body, wherein a positioning inserted rod matched with the inner diameter of a guide pipe hole of the cylinder cover is arranged at the bottom of the gauge body, a compression rod is arranged in the gauge body in an axial sliding manner, a reset assembly used for realizing sliding reset of the compression rod is arranged in the gauge body, a dial indicator is arranged at the top of the gauge body, the top end of the compression rod abuts against the side head of the dial indicator, a measuring column is arranged at the bottom of the gauge body, the measuring column is arranged on the gauge body in a sliding manner in the axial direction perpendicular to the gauge body, an inclined plane is arranged at one end of the measuring column, the bottom end of the compression rod abuts against the inclined plane of the measuring column, and the other end of the measuring column extends out of the gauge body. The coaxiality detection device can directly read the coaxiality error numerical value of the cylinder cover, has high coaxiality detection accuracy on the cylinder cover, and is small in size, light in weight, simple and convenient to use and operate, so that the coaxiality detection efficiency on the cylinder cover is greatly improved.
Description
Technical Field
The invention relates to the technical field of cylinder cover production and processing, in particular to a coaxiality gauge for a cylinder cover.
Background
The cylinder head is a box-shaped part with a complex structure, and is provided with an air inlet valve seat hole, an air outlet valve seat hole, an air valve guide pipe hole, a spark plug mounting hole (a gasoline engine) or an oil injector mounting hole and the like, and a water jacket, an air inlet and outlet channel and a combustion chamber or a part of the combustion chamber are cast in the cylinder head. The cylinder cover is a mounting base body of the valve mechanism and also a sealing cover of the cylinder, has the function of sealing the cylinder, forms a combustion space together with the piston, bears the function of high-temperature and high-pressure gas, belongs to a key part, and has the advantages of complex structure, high precision requirement, complex processing technology and direct influence on the overall performance of the engine due to the processing quality.
The coaxiality of the valve seat hole of the cylinder cover and the guide pipe hole is a special index of the cylinder cover, the coaxiality between the valve seat hole of the cylinder cover and the guide pipe hole is required to be within phi 0.05mm, if the coaxiality error is too large, the assembly of the valve seat of the cylinder cover is influenced, the quality of the cylinder cover is unqualified, and the use performance of the whole machine is directly influenced; therefore, after the cylinder head is machined, it is necessary to detect the coaxiality of the valve seat hole and the pipe hole of the cylinder head.
At present, coaxiality detection of the cylinder head is generally performed using a coaxiality plug gauge or a three-coordinate measuring machine. The coaxiality plug gauge can only detect whether the coaxiality of the cylinder cover is qualified or not, and can not directly read the coaxiality value, so that the coaxiality error condition of the cylinder cover cannot be obtained; although the three-coordinate measuring machine can realize the measurement of the coaxiality of the valve seat hole and the guide pipe hole of the cylinder cover, the three-coordinate measuring machine has the advantages of complex structure, large volume, complicated and inconvenient measurement operation of the cylinder cover, low measurement efficiency, incapability of meeting the measurement requirement in the production and processing process of the cylinder cover and unsuitability for the coaxiality measurement of the cylinder cover.
Disclosure of Invention
The present inventors have made intensive studies to overcome the above-identified drawbacks of the prior art, and as a result, have made extensive and inventive efforts, thereby completing the present invention.
Specifically, the technical problems to be solved by the present invention are: the utility model provides an utensil is examined to axiality for cylinder head to solve present axiality feeler gauge and only can detect whether the axiality of cylinder head valve seat hole and pipe hole is qualified, can not directly acquire the axiality numerical value, and the three-coordinate measuring machine is inconvenient to the axiality measurement complex operation of cylinder head valve seat hole and pipe hole, and measurement efficiency is low, can't satisfy the cylinder head and produce the technical problem of the in-process measurement demand.
In order to solve the technical problem, the technical scheme of the invention is as follows:
the coaxiality gauge comprises a gauge body, wherein the bottom of the gauge body is provided with an integrally formed positioning insertion rod, the outer diameter of the positioning insertion rod is matched with the inner diameter of a guide pipe hole of the cylinder cover, a compression rod is arranged in the gauge body in an axial sliding mode along the measuring body, a reset assembly used for achieving sliding reset of the compression rod is arranged in the gauge body, a dial indicator is arranged at the top of the gauge body, the top end of the compression rod abuts against the side head of the dial indicator, a measuring column is arranged at the position, close to the positioning insertion rod, of the specific bottom of the gauge body and perpendicular to the axial direction of the gauge body in a sliding mode, the measuring column is arranged on the gauge body, an inclined plane is arranged at one end of the measuring column, the bottom end of the compression rod abuts against the inclined plane of the measuring column, and the other end of the measuring column extends to the outside of the gauge body.
As an improved technical scheme, the end part of the positioning inserted rod is of a conical structure.
As an improved technical scheme, a strip-shaped limiting groove is formed in the outer surface of the compression bar, a limiting screw matched with the strip-shaped limiting groove is installed on the gauge body in a threaded mode, a limiting end of the limiting screw penetrates through the gauge body and extends into the strip-shaped limiting groove, and the compression bar is installed in the gauge body through the strip-shaped limiting groove and the limiting screw in a sliding mode.
As an improved technical scheme, the reset assembly comprises a baffle and a compression spring, a blocking ring part is arranged on the compression rod and is an integrally formed structure of the compression rod, the baffle is fixedly installed in the specific top of the compression rod, the top end of the compression rod penetrates through the baffle and is in clearance fit with the baffle, the compression spring is sleeved on the top of the compression rod and is located between the baffle and the blocking ring part of the compression rod, and two ends of the compression spring are respectively abutted against the baffle and the blocking ring part.
As an improved technical scheme, a dial gauge fixing sleeve is fixedly mounted at the top of the gauge body, the bottom end of the dial gauge fixing sleeve abuts against the baffle, the baffle is pressed and fixedly mounted in the gauge body by the dial gauge fixing sleeve, the dial gauge is fixedly mounted on the dial gauge fixing sleeve, and the top end of the pressure rod is movably inserted in the dial gauge fixing sleeve and abuts against the side head of the dial gauge.
As an improved technical scheme, at least one locking groove with a V-shaped cross section is formed in the peripheral surface of the meter fixing sleeve, locking screws which are respectively arranged corresponding to the locking grooves are installed on the meter fixing body in a threaded mode, the locking ends of the locking screws are of conical structures, the locking ends of the locking screws penetrate through the meter fixing body, are inserted into the locking grooves and abut against the meter fixing sleeve, and the meter fixing sleeve is fixedly installed at the top of the meter fixing body through the locking grooves and the locking screws.
As an improved technical scheme, a clamp is fixedly sleeved on a shaft sleeve of the dial indicator, the dial indicator passes through the clamp and is inserted in the fixed gauge sleeve, a positioning bolt is installed on the fixed gauge sleeve through threads, the threaded end of the positioning bolt abuts against the clamp, and the dial indicator passes through the clamp and the positioning bolt is fixedly installed at the top of the fixed gauge sleeve.
As an improved technical scheme, one end of the measuring column is provided with a notch which is correspondingly arranged with the pressing rod, the other end of the measuring column is of a spherical structure, the bottom end of the pressing rod extends into the notch, and the bottom end of the pressing rod is of an arc surface structure or an inclined surface structure matched with the measuring column.
As an improved technical scheme, the position, close to the positioning insertion rod, of the specific bottom is further provided with a limiting plug in a threaded mode, and the limiting plug corresponds to the measuring column and is close to one end of the measuring column.
As an improved technical scheme, a plurality of supporting nails are evenly arranged on the gauge body along the circumferential direction, and the supporting nails are installed on the gauge body through installing nuts and threads.
After the technical scheme is adopted, the invention has the beneficial effects that:
(1) according to the coaxiality gauge for the cylinder cover, the top end of the pressure rod abuts against the side head of the dial indicator, and the bottom end of the pressure rod abuts against the inclined surface of the measuring column, so that the transverse displacement distance of the measuring column can be correspondingly converted into the vertical displacement distance of the pressure rod, and visual display is carried out through the reading of the dial indicator; during the use, the positioning inserted rod of the coaxiality gauge is inserted into a guide pipe hole of the cylinder cover, the positioning inserted rod realizes the positioning insertion of the coaxiality gauge on the cylinder cover, until each support nail abuts against the surface of the cylinder cover, at the moment, the measuring end of the measuring column abuts against the side wall of a valve seat hole of the cylinder cover, after the coaxiality gauge is installed in place, the dial indicator is subjected to zero adjustment, then the coaxiality gauge is rotated, if the guide pipe hole of the cylinder cover and the valve seat hole have coaxiality errors, the coaxiality error number of the guide pipe hole and the valve seat hole can be visually displayed through the dial indicator, and therefore the coaxiality of the guide pipe hole and the valve seat hole of the cylinder cover is detected.
The coaxiality detection tool for the cylinder cover is used for detecting the coaxiality of the cylinder cover conduit hole and the valve seat hole, and compared with a traditional coaxiality detection mode, the coaxiality detection tool not only can directly read the coaxiality error value of the cylinder cover and acquire the coaxiality error condition of the cylinder cover, but also is high in detection precision of the coaxiality of the cylinder cover conduit hole and the valve seat hole.
(2) The end part of the positioning insertion rod is of a conical structure, so that a guiding effect is achieved when the guide pipe hole of the cylinder cover is inserted, and the accurate positioning insertion is convenient for the coaxiality detection tool to detect and use.
(3) The depression bar passes through bar spacing groove and stop screw and realizes the spacing slip in the measuring tool body for the depression bar only can be in the specific axial of volume steady slip, and the slip precision is high.
(4) This reset assembly who is equipped with, when carrying out the axiality to the cylinder head and detecting, measure post lateral displacement, drive the vertical displacement of depression bar and compress compression spring, after the detection finishes, under compression spring's effect, the decline of drive depression bar resets, and the depression bar promotes and measures post lateral displacement to initial position to make this axiality examine utensil possess the automatic re-setting function.
(5) The fixed surface sleeve and the installation structure thereof are arranged, after the fixed surface sleeve is inserted on the measuring body, the fixed surface sleeve can be positioned and fixed by screwing the locking screw, the installation is firm and reliable, and the fixed surface sleeve can be detached by unscrewing the locking screw, so that the disassembly and assembly operation of the fixed surface sleeve is simple and convenient.
(6) The amesdial passes through clamp and positioning bolt fixed mounting in solid table cover top, and the clamp realizes its effective protection when the amesdial installation of being convenient for, and the positioning bolt that unscrews can finely tune the mounted position of amesdial, and the positioning bolt alright realize finely tuning after the location fixed of amesdial is screwed again.
(7) One end of the measuring column is provided with a notch, so that the conversion between the transverse displacement of the measuring column and the vertical displacement of the pressure rod can be realized by the inclined plane of the notch and the bottom end structure of the pressure rod while the measuring column is prevented from falling off from the measuring body; the other end of the measuring column is a measuring end, and the measuring end is of a spherical structure, so that the measuring column is in point contact with the hole wall of a valve seat hole of the cylinder cover when in use, and the coaxiality detection precision of the cylinder cover is high.
(8) The spacing jam that the screw thread was installed on the volume body realizes spacing the slip of measuring the post, measures the post and supports to lean on for its displacement maximum stroke when blockking up, avoids will measuring the post compression and draw into the measuring tool internal under the exogenic action, because of measuring the post and surpassing the displacement stroke and lead to the depression bar top to deviate from in measuring the notch of post, causes the emergence of the unable phenomenon that resets of measurement post.
(9) The supporting nail of installing on the volume body, when carrying out the axiality detection of pipe hole and valve seat hole to the cylinder head, the supporting nail supports the support that this axiality was examined to the surface realization of cylinder head, when being convenient for this axiality examine a detection operation for the axiality to the cylinder head detects the precision height, in addition, through adjusting the supporting nail, can realize the axiality measurement to the different degree of depth positions department of cylinder head valve seat hole.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of a coaxiality gauge for a cylinder head according to the present invention;
FIG. 2 is a schematic cross-sectional view of the coaxiality gauge for the cylinder head according to the invention;
FIG. 3 is a schematic diagram of a preferred embodiment of the present invention;
FIG. 4 is a schematic view of the fitting structure of the components in the measuring tool according to the present invention;
FIG. 5 is a schematic view of the compression bar of the present invention;
FIG. 6 is a schematic view of a measuring column according to the present invention;
FIG. 7 is a schematic structural view of a case for fixing a watch according to the present invention;
FIG. 8 is a schematic view of the structure of the present invention for detecting the state of the cylinder head;
reference numerals: 1-specific amount; 101-positioning inserted link; 2-a compression bar; 201-a strip-shaped limiting groove; 202-a retaining ring portion; 3-a limit screw; 4-a baffle plate; 5-compression spring; 6-surface fixing sleeve; 601-locking groove; 7-dial indicator; 8-locking screws; 9-clamping a hoop; 10-a positioning bolt; 11-measuring column; 1101-notches; 12-limiting and blocking; 13-mounting a nut; 14-support pins; 15-cylinder head.
Detailed Description
The invention is further illustrated by the following specific examples. However, the use and purpose of these exemplary embodiments are only to exemplify the present invention, and do not constitute any limitation in any form to the actual scope of the present invention, and do not limit the scope of the present invention.
As shown in fig. 1 to 8 jointly, the embodiment provides a coaxiality testing fixture for a cylinder head, including the volume body 1, the bottom of the volume body 1 is provided with an integrally formed positioning inserted rod 101, a compression bar 2 is installed in the volume body 1 along the axial sliding direction thereof, a reset component for realizing the sliding reset of the compression bar 2 is arranged in the volume body 1, a dial indicator 7 is installed at the top of the volume body 1, the top end of the compression bar 2 abuts against the side head of the dial indicator 7, a measuring column 11 is arranged at the position, close to the positioning inserted rod 101, of the bottom of the volume body 1, the measuring column 11 is installed on the volume body 1 along the axial direction sliding direction perpendicular to the volume body 1, one end of the measuring column 11 is provided with an inclined plane, the bottom end of the compression bar 2 abuts against the inclined plane of the measuring column 11, and the other end of the measuring column 11 extends to the outside the volume body 1.
In this embodiment, the outer diameter of the positioning insert rod 101 is matched with the inner diameter of the conduit hole of the cylinder cover 15 to realize the positioning insertion of the coaxiality gauge on the cylinder cover 15, and the end of the positioning insert rod 101 is of a conical structure and plays a role in guiding when inserted into the conduit hole of the cylinder cover 15, so that the coaxiality gauge can be conveniently accurately positioned and inserted when in use.
A bar spacing groove 201 has been seted up to depression bar 2's surface, and the volume body 1 goes up the screw thread and installs the stop screw 3 with bar spacing groove 201 looks adaptation, and stop screw 3's spacing end runs through the volume body 1 and extends to bar spacing groove 201 in, and depression bar 2 passes through bar spacing groove 201 and stop screw 3 slidable mounting in the volume body 1 for depression bar 2 only can be at the steady slip in the axial of the volume body 1, and the slip precision is high.
Reset assembly includes baffle 4 and compression spring 5, has one on the depression bar 2 and keeps off ring portion 202, keeps off ring portion 202 and is the integrated into one piece structure of depression bar 2, 4 fixed mounting of baffle in the top of the volume body 1, baffle 4 is run through on the top of depression bar 2, and with 4 clearance fit of baffle, compression spring 5 suit is in the top of depression bar 2, and is located between baffle 4 and the fender ring portion 202 of depression bar 2, compression spring 5's both ends lean on baffle 4 and fender ring portion 202 setting respectively. This reset assembly that is equipped with, when carrying out the axiality to cylinder head 15 and detecting, measure post 11 lateral displacement, drive 2 vertical displacements of depression bar and compress compression spring 5, after the detection finishes, under compression spring 5's effect, drive depression bar 2 descends and resets, and depression bar 2 promotes and measures 11 lateral displacement of post to initial position to make this axiality examine utensil possess the automatic re-setting function.
In this embodiment, a fixed gauge sleeve 6 is fixedly installed at the top of the gauge body 1, the bottom end of the fixed gauge sleeve 6 abuts against the baffle 4, the baffle 4 is pressed and fixedly installed in the gauge body 1 by the fixed gauge sleeve 6, the dial gauge 7 is fixedly installed on the fixed gauge sleeve 6, and the top end of the compression rod 2 is movably inserted in the fixed gauge sleeve 6, is in clearance fit with the fixed gauge sleeve 6, and abuts against the side head of the dial gauge 7.
The outer peripheral surface of the meter fixing sleeve 6 is provided with at least one locking groove 601 with a V-shaped cross section, the meter body 1 is provided with locking screws 8 in a threaded manner, the locking screws 8 are respectively arranged corresponding to the locking grooves 601, the locking ends of the locking screws 8 are of a conical structure, the locking ends of the locking screws 8 penetrate through the meter body 1 and are inserted into the locking grooves 601 to abut against the meter fixing sleeve 6, and the meter fixing sleeve 6 is fixedly arranged at the top of the meter body 1 through the locking grooves 601 and the locking screws 8; in this embodiment, two locking grooves 601 are correspondingly formed on the outer circumferential surface of the surface fixing sleeve 6. After the fixed surface sleeve 6 and the installation structure thereof are arranged, the fixed surface sleeve 6 is inserted on the gauge body 1, the fixed surface sleeve 6 can be positioned and fixed by screwing the locking screw 8, the installation is firm and reliable, and the fixed surface sleeve 6 can be detached by unscrewing the locking screw 8, so that the detachment and installation operation of the fixed surface sleeve 6 is simple and convenient.
In this embodiment, fixed cover is equipped with clamp 9 on the axle sleeve of amesdial 7, and amesdial 7 passes through clamp 9 cartridge on gu show cover 6, and gu the screw thread is installed positioning bolt 10 on the show cover 6, and positioning bolt 10's screw thread end supports and leans on clamp 9 to set up, and amesdial 7 passes through clamp 9 and positioning bolt 10 fixed mounting in gu show cover 6 top. The dial indicator 7 is fixedly installed at the top of the dial indicator sleeve 6 through the clamp 9 and the positioning bolt 10, the clamp 9 is effectively protected when the dial indicator 7 is installed conveniently, the positioning bolt 10 can be loosened to finely adjust the installation position of the dial indicator 7, and the positioning bolt 10 is screwed again to fixedly position the dial indicator 7 after fine adjustment.
In this embodiment, the structure of the dial indicator 7 is well known to those skilled in the art, and therefore, will not be described herein.
One end of the measuring column 11 is provided with a notch 1101 arranged corresponding to the pressure lever 2, the bottom end of the pressure lever 2 extends into the notch 1101, and the bottom end of the pressure lever 2 is of an arc surface structure or an inclined surface structure matched with the measuring column 11; measuring some notches 1101 are seted up to post 11 one end, when avoiding measuring post 11 to deviate from the volume body 1, the conversion of post 11 lateral displacement and depression bar 2 vertical displacement can be realized measuring to the inclined plane of notch 1101 and the bottom structure of depression bar 2.
In this embodiment, the bottom of depression bar 2 is designed for the inclined plane structure with measuring post 11 matched with for be face contact between depression bar 2 and measuring post 11, more do benefit to the vertical displacement who converts the lateral displacement of measuring post 11 into depression bar 2, and wear and tear for a short time.
In this embodiment, the other end of the measuring column 11 is a spherical structure; when the measuring column is used, the other end of the measuring column 11 is a measuring end, the spherical structure enables the measuring column 11 to be in point contact with the wall of a valve seat hole of the cylinder cover 15, and the coaxiality detection precision of the cylinder cover is high.
In this embodiment, a position, close to the positioning insertion rod 101, of the bottom of the gauge body 1 is further provided with a limiting plug 12 in a threaded manner, and the limiting plug 12 is arranged corresponding to the measuring column 11 and close to one end of the measuring column 11; the spacing jam 12 of installation realizes spacing the slip of measuring post 11, measures the post 11 and leans on for its displacement maximum stroke when blockking up 12, avoids will measuring post 11 compression input specifically 1 under the exogenic action in, because of measuring post 11 surpasss the displacement stroke and leads to 2 tops of depression bar to deviate from in the notch 1101 of measuring post 11, causes the emergence of the unable phenomenon of resetting of measuring post 11.
In the embodiment, a plurality of support nails 14 are uniformly arranged on the gauge body 1 along the circumferential direction, and the support nails 14 are installed on the gauge body 1 by utilizing the installation nuts 13; when the coaxiality of the guide pipe hole and the valve seat hole is detected for the cylinder cover 15, the support nail 14 abuts against the surface of the cylinder cover 15 to support the coaxiality detection tool, the detection operation of the coaxiality detection tool is facilitated, the coaxiality detection precision of the cylinder cover 15 is high, and in addition, the coaxiality measurement of different depth positions of the valve seat hole of the cylinder cover 15 can be realized by adjusting the support nail 14.
According to the coaxiality detection tool for the cylinder cover, based on the structure, the top end of the compression bar 2 abuts against the side head of the dial indicator 7, and the bottom end of the compression bar 2 abuts against the inclined surface of the measuring column 11, so that the transverse displacement distance of the measuring column 11 can be correspondingly converted into the vertical displacement distance of the compression bar 2, and visual display is carried out through the reading of the dial indicator 7; when the coaxiality gauge is used, the positioning inserted rod 101 of the coaxiality gauge is inserted into a guide pipe hole of the cylinder cover 15 in a mode of facing the guide pipe hole, the positioning inserted rod 101 achieves positioning insertion of the coaxiality gauge on the cylinder cover 15, and all the supporting nails 14 abut against the surface of the cylinder cover 15, at the moment, the measuring end of the measuring column 11 abuts against the side wall of a valve seat hole of the cylinder cover 15, after the coaxiality gauge is installed in place, the scale of the dial indicator 7 is adjusted to zero, then the coaxiality gauge is rotated, if the coaxiality error exists between the guide pipe hole of the cylinder cover 15 and the valve seat hole, the coaxiality error number between the guide pipe hole and the valve seat hole can be visually displayed through the dial indicator 7, and therefore the coaxiality of the guide pipe hole and the valve seat hole of the cylinder cover 15 can be detected.
The coaxiality detection tool for the cylinder cover is used for detecting the coaxiality of the cylinder cover conduit hole and the valve seat hole, and compared with a traditional coaxiality detection mode, the coaxiality detection tool not only can directly read the coaxiality error numerical value of the cylinder cover and acquire the coaxiality error condition of the cylinder cover 15, but also is high in detection precision of the coaxiality of the cylinder cover conduit hole and the valve seat hole.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should also be understood that various alterations, modifications and/or variations can be made to the present invention by those skilled in the art after reading the technical content of the present invention, and all such equivalents fall within the protective scope defined by the claims of the present application.
Claims (10)
1. The utility model provides a utensil is examined to axiality for cylinder head which characterized in that: including the volume body, the volume body bottom has integrated into one piece's location inserted bar, the external diameter of location inserted bar and the pipe bore inside diameter looks adaptation of cylinder head, it has a depression bar to install along its axial slidable in the volume body, just be equipped with in the volume body and be used for realizing the reset assembly that the depression bar slided and resets, the amesdial is installed at the specific top of volume, the top of depression bar supports and leans on the side head of amesdial, the specific bottom of volume is close to location inserted bar position department is equipped with measures the post, measure the post along the perpendicular to the specific axial direction slidable mounting of volume in the volume body is last, just the one end of measuring the post has an inclined plane, the bottom of depression bar supports and leans on the inclined plane setting of measuring the post, the other end of measuring the post extends to the external setting of volume body.
2. The coaxiality gauge for a cylinder head according to claim 1, wherein: the end part of the positioning inserted rod is of a conical structure.
3. The coaxiality gauge for a cylinder head according to claim 1, wherein: the outer surface of the pressing rod is provided with a strip-shaped limiting groove, the gauge body is provided with a limiting screw matched with the strip-shaped limiting groove in a threaded mode, the limiting end of the limiting screw penetrates through the gauge body and extends into the strip-shaped limiting groove, and the pressing rod is installed in the gauge body through the strip-shaped limiting groove and the limiting screw in a sliding mode.
4. The coaxiality gauge for a cylinder head according to claim 3, wherein: the reset assembly comprises a baffle and a compression spring, a blocking ring part is arranged on the compression rod, the baffle is fixedly installed in the top of the gauge body, the top end of the compression rod penetrates through the baffle and is in clearance fit with the baffle, the compression spring is sleeved on the top of the compression rod and is located between the baffle and the blocking ring part of the compression rod, and two ends of the compression spring are respectively abutted against the baffle and the blocking ring part.
5. The coaxiality gauge for a cylinder head according to claim 4, wherein: the measuring tool is characterized in that a gauge fixing sleeve is fixedly installed at the top of the measuring tool body, the bottom end of the gauge fixing sleeve abuts against the baffle, the baffle is pressed and fixedly installed in the measuring tool body through the gauge fixing sleeve, the dial indicator is fixedly installed on the gauge fixing sleeve, and the top end of the compression rod is movably inserted into the gauge fixing sleeve and abuts against the side head of the dial indicator.
6. The coaxiality gauge for a cylinder head according to claim 5, wherein: the outer peripheral surface of the meter fixing sleeve is provided with at least one locking groove with a V-shaped cross section, the meter body is provided with locking screws in a threaded manner, the locking screws are respectively arranged corresponding to the locking grooves, the locking ends of the locking screws are of a conical structure, the locking ends of the locking screws penetrate through the meter body and are inserted into the locking grooves to abut against the meter fixing sleeve, and the meter fixing sleeve is fixedly arranged at the top of the meter body through the locking grooves and the locking screws.
7. The coaxiality gauge for the cylinder head according to claim 6, wherein: the fixed cover is equipped with the clamp on the axle sleeve of amesdial, the amesdial passes through the clamp cartridge in gu the table is sheathe in, just gu the table is sheathe in the screw thread and is installed positioning bolt, positioning bolt's screw thread end supports and leans on the clamp sets up, the amesdial passes through the clamp with positioning bolt fixed mounting in gu table cover top.
8. The coaxiality gauge for a cylinder head according to claim 7, wherein: the measuring column is characterized in that one end of the measuring column is provided with a notch corresponding to the pressing rod, the other end of the measuring column is of a spherical structure, the bottom end of the pressing rod extends into the notch, and the bottom end of the pressing rod is of an arc surface structure or an inclined surface structure matched with the measuring column.
9. The coaxiality gauge for a cylinder head according to claim 8, wherein: the bottom that the volume is specific is close to location inserted bar position department still the screw thread install spacing jam, spacing jam with the measurement post corresponds the setting, and is close to the one end setting of measurement post.
10. The coaxiality gauge for a cylinder head according to any one of claims 1 to 9, wherein: the gauge body is last still evenly to be equipped with a plurality of support nails along circumference, the support nail utilizes mounting nut screw thread to install in on the gauge body.
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Cited By (1)
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| CN115289947A (en) * | 2022-09-28 | 2022-11-04 | 山东豪迈机械科技股份有限公司 | Coaxiality detection device |
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Denomination of invention: A Coaxiality Measuring Tool for Cylinder Head Effective date of registration: 20230324 Granted publication date: 20221216 Pledgee: Weifang Jinma road sub branch of Bank of Weifang Co.,Ltd. Pledgor: WEIFANG SIBO PRECISION TECHNOLOGY Co.,Ltd. Registration number: Y2023980036130 |
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Granted publication date: 20221216 Pledgee: Weifang Jinma road sub branch of Bank of Weifang Co.,Ltd. Pledgor: WEIFANG SIBO PRECISION TECHNOLOGY Co.,Ltd. Registration number: Y2023980036130 |