CN111486766A - Checking fixture for engine cylinder block with five positioning surfaces - Google Patents
Checking fixture for engine cylinder block with five positioning surfaces Download PDFInfo
- Publication number
- CN111486766A CN111486766A CN202010492123.7A CN202010492123A CN111486766A CN 111486766 A CN111486766 A CN 111486766A CN 202010492123 A CN202010492123 A CN 202010492123A CN 111486766 A CN111486766 A CN 111486766A
- Authority
- CN
- China
- Prior art keywords
- hole
- support plate
- measuring
- positioning
- cylinder block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 67
- 238000005259 measurement Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- 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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a checking fixture for an engine cylinder block with five positioning surfaces, which comprises: a base; the first detection support plate is arranged at the position, corresponding to the first positioning surface of the engine cylinder block, of the front side surface of the base, a first through hole is formed in the upper portion of the first detection support plate, and a first guide sleeve is arranged in the first through hole; the second detection support plate is arranged at the position, corresponding to the second positioning surface of the engine cylinder block, of the front side surface of the base, a second through hole is formed in the upper portion of the second detection support plate, and a second guide sleeve is arranged in the second through hole; the third detection support plate is arranged at the position, corresponding to a third positioning surface of the engine cylinder block, of the front side surface of the base, a third through hole is formed in the upper portion of the third detection support plate, and a third guide sleeve is arranged in the third through hole; and the fourth detection support plate and the fifth detection support plate are arranged at the positions of the two end surfaces of the base, which correspond to the fourth positioning surface and the fifth positioning surface of the engine cylinder body. The detection tool provided by the invention has the advantage that the detection efficiency is obviously improved.
Description
Technical Field
The invention relates to the technical field of engine cylinder block processing, in particular to a checking fixture for an engine cylinder block with five positioning surfaces.
Background
In the existing engine, five positioning surfaces are designed on a cylinder body to be used as positioning references for production line processing. The five positioning surfaces have higher dimensional requirements on key positions of the cylinder block, namely the center of the cylinder hole and the lower end face of the cylinder hole, and the position dimensions of the five positioning surfaces have larger influence on the processing quality of subsequent processing procedures, so that the five positioning surfaces are strictly controlled.
The prior art detects the position size of five positioning surfaces of a cylinder block by the following method:
1. the side surface of the cylinder body with three positioning surfaces is lifted upwards to the inspection platform, the other side surface of the cylinder body is supported by three jacks, and the central lines of the two cylinder holes at the front end and the rear end of the cylinder body are leveled by the jacks. And then, measuring the height dimension of a lower bus of the cylinder hole at the front end and the rear end of the cylinder block relative to the inspection platform and the height dimension of the three positioning surfaces by using a vernier height gauge with a lever dial indicator, measuring the diameter of the cylinder hole by using the vernier caliper, and calculating the distance from the three positioning surfaces to the center of the cylinder hole respectively.
2. The cylinder block hanging inspection platform is turned over 90 degrees on a station appliance, the top surface of the cylinder block faces downwards, the lower end face of a cylinder hole of the cylinder block faces upwards, the cylinder block is hung on the inspection platform, the top surface of the cylinder block is supported by three jacks, the lower end faces of two cylinder holes in the front end and the rear end of the cylinder block are leveled by the jacks, the height sizes of the lower end faces of the cylinder holes in the front end and the rear end of the cylinder block relative to the inspection platform and the height sizes of the other two positioning faces are measured by vernier height gauges with lever dial indicators, and the distance from the other two positioning faces to the lower.
However, the method of detecting the position dimensions of the five positioning surfaces of the cylinder block has the following disadvantages:
1. at the inspection platform, through the jack with cylinder block front and back end two jar hole central lines transfer the level and with the cylinder block front and back end two lower terminal surfaces transfer the level in jar hole, need through adjusting repeatedly many times, operate inconvenient, inefficiency.
2. The position and size of the five positioning surfaces of the cylinder body are detected, and then the detection result can be obtained through complicated calculation.
3. Five positioning surfaces of the cylinder body have position sizes in two directions, the upper inspection platform needs to be lifted up and down twice during detection, the cylinder body needs to be turned over by 90 degrees in the middle, and the labor intensity of workers is high.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a checking fixture for an engine cylinder block with five positioning surfaces, which can obviously improve the detection speed and the detection efficiency and greatly reduce the labor intensity of workers.
In order to achieve the above object, the present invention provides a checking fixture for an engine cylinder block having five positioning surfaces, the five positioning surfaces of the engine cylinder block being located on the same side of the engine cylinder block, wherein a first positioning surface and a second positioning surface are located at two ends of an upper portion of the engine cylinder block, a third positioning surface is located in the middle of a lower portion of the engine cylinder block, and a fourth positioning surface and a fifth positioning surface are located at two ends of a middle portion of the engine cylinder block, the checking fixture for the engine cylinder block having the five positioning surfaces comprising: a base; the first detection support plate is arranged at the position, corresponding to the first positioning surface of the engine cylinder block, of the front side surface of the base, a first through hole is formed in the upper portion of the first detection support plate, and a first guide sleeve is arranged in the first through hole; the second detection support plate is arranged at the position, corresponding to the second positioning surface of the engine cylinder block, of the front side surface of the base, a second through hole is formed in the upper portion of the second detection support plate, and a second guide sleeve is arranged in the second through hole; the third detection support plate is arranged at the position, corresponding to a third positioning surface of the engine cylinder block, of the front side surface of the base, a third through hole is formed in the upper portion of the third detection support plate, and a third guide sleeve is arranged in the third through hole; the fourth detection support plate and the fifth detection support plate are arranged at the positions, corresponding to the fourth positioning surface and the fifth positioning surface, of the engine cylinder body on the two end surfaces of the base; the inner hole and the end face of the first guide sleeve and the second guide sleeve are respectively used as measuring reference for measuring the first positioning surface and the second positioning surface by the first measuring device, the inner hole and the end face of the third guide sleeve are used as measuring reference for measuring the third positioning surface by the second measuring device, and the small plane at the upper end of the fourth detection support plate and the small plane at the upper end of the fifth detection support plate are respectively as high as the fourth positioning surface and the fifth positioning surface so as to be used as measuring reference for measuring the fourth positioning surface and the fifth positioning surface by the third measuring device.
In an embodiment of the present invention, the first detection support plate and the second detection support plate are both wedge-shaped plates, the third detection support plate is a rectangular plate, and the fourth detection support plate and the fifth detection support plate are "shaped plates".
In an embodiment of the invention, the first measuring device comprises a measuring head, a mandrel, a spring and a positioning sleeve, wherein an external thread at the right end of the measuring head is screwed into a screw hole at the left end of the mandrel, two stepped excircles of the mandrel are matched with a stepped hole at the left end and the middle of the positioning sleeve at the same time, and the spring is sleeved between a shaft shoulder of the mandrel and a shoulder surface at the left end of a middle hole of the positioning sleeve, so that the mandrel can push the measuring head to be reliably contacted with the measuring surface under the action of spring force.
In an embodiment of the invention, the first measuring device further comprises a cylindrical pin, a first gauge seat, a first opening bush, a first tightening screw and a first percentage meter, wherein the cylindrical pin is arranged in the transverse small hole at the right end of the mandrel and clamped in the transverse U-shaped hole at the right end of the positioning sleeve, an external thread at the left end of the first gauge seat is screwed into the screw hole at the right end of the positioning sleeve, the first opening bush is sleeved into the inner hole of the gauge seat and is flush with the right end of the gauge seat, the first percentage meter is arranged in the inner hole of the first opening bush, and the first tightening screw is screwed into the transverse screw hole of the first gauge seat.
In one embodiment of the present invention, the second measuring device and the first measuring device have the same configuration, but the second measuring device has a different stylus length from the first measuring device.
In an embodiment of the invention, the checking fixture for the engine cylinder block with five positioning surfaces further comprises a first calibration device and a second calibration device, the first calibration device comprises a sleeve and a gauge block, wherein the sleeve is screwed into an external thread at the upper end of the gauge block, the gauge block is fixed in a screw hole which is arranged on the middle of the front side of the top surface of the base and is deviated to the left through a thread at the lower end, the distance from the upper end surface of the gauge block to the upper end surface of the sleeve is equal to the distance from the left side surface of a measuring head of the first measuring device to an outer circle step surface of the positioning sleeve, the second calibration device is identical in structure with the first calibration device, and the second calibration device is used for calibrating and measuring a second measuring device for measuring the size error of the distance from a third positioning surface of the.
In one embodiment of the invention, the first calibration device is used for placing the first measurement device for calibration, when the dial indicator is zero, the screw is tightened to fix the dial indicator, the first measurement device is sleeved in the inner hole of the first guide sleeve and enables the positioning sleeve to be attached to the end face of the first guide sleeve, and the reading of the dial indicator is the error of the distance size from the first positioning face of the engine cylinder block to the center of the cylinder hole of the cylinder block.
In an embodiment of the present invention, the third measuring device includes a second tightening screw, a second opening bushing, a second dial gauge and a second gauge stand, wherein the second gauge stand is a l-shaped plate with a notch, a through hole is formed in a vertical direction of a thin portion of the second gauge stand, and a screw hole is formed in an end surface of the second gauge stand, and the second tightening screw and the second opening bushing are respectively used for installing the second opening bushing, so that the second dial gauge is installed in the second opening bushing.
In an embodiment of the invention, when the lower plane of the calibrated third measuring device is tightly attached to the small plane at the upper end of the fourth detection support plate, the measuring head of the second dial indicator contacts the fourth positioning surface of the engine cylinder block, and the reading of the second dial indicator is the error of the distance size from the fourth positioning surface to the lower end surface of the cylinder hole of the cylinder block.
In an embodiment of the invention, when the lower plane of the third measuring device is attached to the small plane at the upper end of the fifth detection support plate, the measuring head of the second dial indicator contacts the fifth positioning surface of the engine cylinder block, and the reading of the second dial indicator is the error of the distance size from the fifth positioning surface to the lower end surface of the cylinder hole of the cylinder block.
Compared with the prior art, the checking fixture for the engine cylinder block with the five positioning surfaces has the following advantages: the measuring device and the calibrating device of the checking fixture are simple in structure and fast in calibration, the cylinder body does not need to be adjusted repeatedly on a checking platform, a detection result can be obtained without complicated calculation, the detection speed is fast, the efficiency is high, the cylinder body does not need to be turned over by 90 degrees, and the labor intensity of workers is greatly reduced.
Drawings
FIG. 1 is a front view of a fixture according to an embodiment of the present invention;
FIG. 2 is a top view of a fixture according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 5 is an isometric view of a gauge according to an embodiment of the present invention;
FIG. 6 is a front view of a first measuring device according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along the line C-C of FIG. 6;
FIG. 8 is a cross-sectional view of a third measurement device according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 5, the engine block has five positioning surfaces located on the same side of the engine block, wherein the first positioning surface a and the second positioning surface B are located at both ends of the upper portion of the engine block 18, the third positioning surface E is located in the middle of the lower portion of the engine block 18, and the fourth positioning surface C and the fifth positioning surface D are located at both ends of the middle portion of the engine block.
As shown in fig. 1 to 8, a gauge for an engine block having five positioning surfaces according to a preferred embodiment of the present invention includes: the device comprises a base 17, a first measuring device 1, a first guide sleeve 2, a first detection support plate 3, a front end cylinder hole positioning device 4, a rear end cylinder hole positioning device 5, a second guide sleeve 6, a second detection support plate 7, a second measuring device 12, a third guide sleeve 13, a third detection support plate 14, a third measuring device 8, a fourth detection support plate 9, a fifth detection support plate 10 and an inner cavity positioning device 15. The front-end cylinder hole positioning device 4, the rear-end cylinder hole positioning device 5 and the inner cavity positioning device 15 are the same as the structure of the fixture for machining five positioning surfaces of the cylinder block (not described in detail herein), so as to ensure that the positioning reference for machining the cylinder block 18 is unified with the measurement reference for detection.
As shown in fig. 1 to 5, the first detecting support plate 3 is disposed at a position on the front side surface of the base 17 corresponding to the first positioning surface a of the engine cylinder block 18, a first through hole is formed in an upper portion of the first detecting support plate 3, and the first guide sleeve 2 is disposed in the first through hole. The second detection support plate 7 is arranged at a position, corresponding to the second positioning surface B of the engine cylinder block 18, of the front side surface of the base, a second through hole is formed in the upper portion of the second detection support plate 7, and a second guide sleeve 6 is arranged in the second through hole. The third detection support plate 14 is arranged at a position, corresponding to a third positioning surface E of the engine cylinder body, of the front side surface of the base, a third through hole is formed in the upper portion of the third detection support plate 14, and a third guide sleeve 13 is arranged in the third through hole. The fourth detection support plate 9 and the fifth detection support plate 10 are disposed at positions on both end surfaces of the base 17 corresponding to the fourth positioning surface C and the fifth positioning surface D of the engine cylinder block. The number of the first measuring devices 1 is two, the two first measuring devices are respectively arranged in the first guide sleeve 2 and the second guide sleeve 6, and the inner holes and the end faces M1 and M2 of the first guide sleeve 2 and the second guide sleeve 6 are respectively used as measuring references for measuring the first positioning surface a and the second positioning surface B by the first measuring device 1. The inner bore of the third guide sleeve 13 and the end face M3 serve as a measuring reference for the second measuring device 12 to measure the third positioning surface E. The number of the third measuring devices 8 is two, and the facet N1 at the upper end of the fourth detecting support plate 9 and the facet N2 at the upper end of the fifth detecting support plate 10 are respectively as high as the fourth positioning surface C and the fifth positioning surface D, so that the measuring standards for the third measuring devices 8 to measure the fourth positioning surface C and the fifth positioning surface D can be used. Where, as shown in fig. 4, H is the size of the cylinder bore top surface.
In one embodiment of the present invention, the first detection strip 3 and the second detection strip 7 are wedge-shaped plates, the third detection strip 14 is rectangular, and the fourth detection strip 9 and the fifth detection strip 10 are "shaped plates".
In an embodiment of the present invention, as shown in fig. 6-7, the first measuring device 1 includes a measuring head 111, a spindle 112, a spring 113, and a positioning sleeve 114, wherein an external thread at the right end of the measuring head 111 is screwed into a threaded hole at the left end of the spindle 112, two stepped excircles of the spindle 112 are simultaneously matched with a stepped hole at the left end and the middle of the positioning sleeve 114, and the spring 113 is sleeved between a shoulder of the spindle 112 and a shoulder surface at the left end of a middle hole of the positioning sleeve 114, so that the spindle 112 pushes the measuring head 111 to reliably contact with the measuring surface under the action of a spring force.
In an embodiment of the invention, as shown in fig. 6-7, the first measuring device 1 further comprises a cylindrical pin 115, a first gauge stand 116, a first opening bushing 117, a first tightening screw 118 and a first percentile gauge 119. The cylindrical pin 116 is disposed in a transverse small hole at the right end of the mandrel 112 and clamped in a transverse U-shaped hole at the right end of the positioning sleeve 114, and an external thread at the left end of the first gauge stand 116 is screwed into a screw hole at the right end of the positioning sleeve 114. The first opening bushing 117 is fitted into the inner hole of the first bezel 116 and flush with the right end of the first bezel 116, the first dial indicator 119 is disposed in the inner hole of the first opening bushing 117, and the first tightening screw 118 is screwed into the lateral screw hole of the first bezel 116. The measuring head of the first percentage table 119 is in contact with the right end plane of the mandrel 112 and has a certain amount of pressure.
In one embodiment of the invention, the checking fixture for an engine block having five positioning surfaces further comprises a first calibration device 11 and a second calibration device 16, wherein the second calibration device 16 is identical in structure to the first calibration device 11. As shown in fig. 3-7, the first calibration device 11 includes a sleeve 121 and a gauge block 122. The sleeve 121 is screwed into the external thread at the upper end of the meter block 122, and the meter block 122 is fixed in the screw hole on the left side of the front side of the top surface of the base 17 through the thread at the lower end. The distance from the upper end surface of the counter gauge block 122 to the upper end surface of the sleeve 121 is equal to the distance from the left side surface of the measuring head 111 of the first measuring device 1 to the outer circular step surface K of the positioning sleeve 114 (as shown in fig. 3, equal to a-a).
In one embodiment of the present invention, a first measuring device is placed in the first calibrating device 1 for calibration, after the first dial indicator 119 is zero-set, the first tightening screw 118 is tightened to fix the first dial indicator 119, the first measuring device 1 is inserted into the inner hole of the first guide sleeve 2 and the K surface of the positioning sleeve 114 is made to abut against the end surface M1 of the first guide sleeve 2, and the reading of the first dial indicator 119 is the error of the distance dimension a from the first positioning surface a of the engine block 18 to the center of the cylinder bore. Similarly, the calibrated first measuring device 1 is inserted into the inner hole of the second guide sleeve 6, and the K surface of the positioning sleeve 114 is made to abut against the end surface M2 of the second guide sleeve 6, at which time the reading of the first dial indicator 119 is the error of the distance dimension B from the second positioning surface B of the cylinder block 18 to the center of the cylinder hole of the cylinder block 18.
In one embodiment of the present invention, the second measuring device 12 and the first measuring device 1 have the same structure, and the method for calibrating the second measuring device 12 is the same as the method for calibrating the first measuring device 1. And the same method is used for calibrating the dial gauge by the second calibration device 16, and the error of the distance dimension E from the third positioning surface E of the engine block 18 to the center of the cylinder bore can be measured by replacing the gauge head with a suitable length.
In an embodiment of the invention, as shown in fig. 8, the third measuring device 8 comprises a second tightening screw 811, a second split bushing 812, a second dial indicator 813 and a second gauge stand 814. The second gauge stand 814 is a l-shaped plate with a notch, and a through hole is formed in the vertical direction of the thin portion of the second gauge stand 814, and a screw hole is formed in the end face of the thin portion of the second gauge stand 814, and the through hole and the screw hole are used for installing a second opening bushing 812 and a second tightening screw 811, respectively, so that the second dial indicator 813 is installed in the second opening bushing 812. As shown in fig. 1, since the facet N1 at the upper end of the fourth detection support plate 9 and the facet N2 at the upper end of the fifth detection support plate 10 are respectively as high as the fourth positioning surface C and the fifth positioning surface D of the cylinder block, the dial indicator can be calibrated by simply placing the third measuring device 8 on the platform.
In an embodiment of the present invention, when the calibrated lower plane V of the third measuring device 8 abuts against the small plane N1 at the upper end of the fourth detecting support plate 9, the measuring head of the second dial indicator 813 contacts the fourth positioning surface C of the engine cylinder block, and the reading of the second dial indicator 813 is the error of the distance dimension C from the fourth positioning surface C to the lower end surface of the cylinder bore.
In one embodiment of the present invention, when the lower plane V of the third measuring device 8 abuts against the small plane N2 at the upper end of the fifth detecting support plate 10, the probe of the second dial indicator 813 contacts the fifth positioning surface D of the engine block, and the reading of the second dial indicator 813 is the error of the distance dimension D from the fifth positioning surface D to the lower end surface of the cylinder bore.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. An instrument for an engine block having five locating surfaces, the five locating surfaces of the engine block being located on the same side of the engine block, wherein a first locating surface and a second locating surface are located at two ends of an upper portion of the engine block, a third locating surface is located in the middle of a lower portion of the engine block, and a fourth locating surface and a fifth locating surface are located at two ends of a middle portion of the engine block, the instrument comprising:
a base;
the first detection support plate is arranged on the front side surface of the base and corresponds to the position of the first positioning surface of the engine cylinder block, a first through hole is formed in the upper portion of the first detection support plate, and a first guide sleeve is arranged in the first through hole;
the second detection support plate is arranged on the front side surface of the base and corresponds to the position of the second positioning surface of the engine cylinder block, a second through hole is formed in the upper portion of the second detection support plate, and a second guide sleeve is arranged in the second through hole;
the third detection support plate is arranged on the front side surface of the base and corresponds to the position of the third positioning surface of the engine cylinder block, a third through hole is formed in the upper portion of the third detection support plate, and a third guide sleeve is arranged in the third through hole;
the fourth detection support plate and the fifth detection support plate are arranged at the positions, corresponding to the fourth positioning surface and the fifth positioning surface of the engine cylinder body, of the two end surfaces of the base;
the inner hole and the end face of the first guide sleeve and the second guide sleeve are respectively used as measuring references for measuring the first positioning surface and the second positioning surface by a first measuring device, the inner hole and the end face of the third guide sleeve are used as measuring references for measuring the third positioning surface by a second measuring device, and the small plane at the upper end of the fourth detection support plate and the small plane at the upper end of the fifth detection support plate are respectively as high as the fourth positioning surface and the fifth positioning surface so as to be used as measuring references for measuring the fourth positioning surface and the fifth positioning surface by a third measuring device.
2. The tool for checking an engine cylinder block with five positioning surfaces as claimed in claim 1, wherein the first detection support plate and the second detection support plate are both wedge-shaped plates, the third detection support plate is a rectangular plate, and the fourth detection support plate and the fifth detection support plate are 'shaped plates'.
3. The checking fixture for the engine cylinder block with the five locating surfaces as claimed in claim 1, wherein the first measuring device comprises a measuring head, a mandrel, a spring and a locating sleeve, wherein an external thread at the right end of the measuring head is screwed into a screw hole at the left end of the mandrel, two stepped excircles of the mandrel are matched with a left end of the locating sleeve and a middle stepped hole at the same time, and the spring is sleeved between a shoulder of the mandrel and a shoulder surface at the left end of a middle hole of the locating sleeve, so that the mandrel can push the measuring head to be reliably contacted with the measuring surfaces under the action of the spring force.
4. The tool for checking an engine cylinder block having five locating surfaces as claimed in claim 3, wherein said first measuring device further comprises a cylindrical pin, a first gauge stand, a first opening bush, a first tightening screw and a first dial indicator, wherein said cylindrical pin is arranged in the transverse small hole at the right end of said mandrel and is clamped in the transverse U-shaped hole at the right end of said locating bush, the external thread at the left end of said first gauge stand is screwed into the threaded hole at the right end of said locating bush, said first opening bush is sleeved into the inner hole of said first gauge stand and is flush with the right end of said first gauge stand, said first dial indicator is arranged in the inner hole of said first opening bush, and said first tightening screw is screwed into the transverse threaded hole of said first gauge stand.
5. The tool for checking an engine cylinder block having five locating surfaces as set forth in claim 4, wherein said second measuring device and said first measuring device are identical in structure, but the length of the toe of said second measuring device is different from the length of the toe of said first measuring device.
6. The tool for checking an engine cylinder block with five positioning surfaces as set forth in claim 5, further comprising a first calibrating device and a second calibrating device, wherein the first calibrating device comprises a sleeve and a gauge block, wherein the sleeve is screwed into an external thread at the upper end of the gauge block, the gauge block is fixed in a screw hole which is arranged on the top surface of the base and is deviated to the left from the middle of the front side by a thread at the lower end, and the distance from the upper end surface of the gauge block to the upper end surface of the sleeve is equal to the distance from the left side surface of the measuring head of the first measuring device to the outer circular step surface of the positioning sleeve.
7. The tool for an engine cylinder block having five locating surfaces as set forth in claim 6, wherein said first calibration means is adapted to be calibrated by placing said first measuring means into said first measuring means, and tightening said first tightening screw to fix said first measuring means after said first measuring means is calibrated to zero, said first measuring means is inserted into said inner bore of said first guide sleeve and causes said first locating sleeve to abut against an end surface of said first guide sleeve, and said reading of said first measuring means is an error in a dimension of a distance from said first locating surface of said engine cylinder block to a center of a cylinder bore of said engine cylinder block; when the calibrated first measuring device is sleeved into the inner hole of the second guide sleeve and the end face of the first positioning sleeve is tightly attached to the end face of the second guide sleeve, the reading of the first dial gauge is the error of the distance size from the second positioning surface of the engine cylinder block to the center of the cylinder hole of the cylinder block; the second calibration means is of the same construction as the first calibration means, and is used for calibrating second measurement means for measuring a dimension error of a distance from the third positioning surface of the engine block to a block cylinder bore center.
8. The tool for checking an engine cylinder block having five locating surfaces as set forth in claim 6, wherein said third measuring means comprises a second tightening screw, a second opening bush, a second dial gauge and a second gauge stand, wherein the second gauge stand is a L-shaped plate with a notch, a through hole is formed in the vertical direction of the thin portion of the second gauge stand, and screw holes are formed in the end surface of the second gauge stand for mounting the second opening bush and the second tightening screw, respectively, so that the second dial gauge is mounted in the second opening bush.
9. The fixture for an engine block having five locating surfaces according to claim 8, wherein when the lower plane of the calibrated third measuring device abuts against the facet at the upper end of the fourth detecting support plate, the measuring head of the second dial indicator contacts the fourth locating surface of the engine block, and the reading of the second dial indicator is the error of the distance size from the fourth locating surface to the lower end surface of the cylinder bore.
10. The tool for checking an engine cylinder block with five positioning surfaces as set forth in claim 9, wherein when the lower plane of the third measuring device abuts against the facet at the upper end of the fifth detecting support plate, the measuring head of the second dial indicator contacts the fifth positioning surface of the engine cylinder block, and the reading of the second dial indicator is the error of the distance dimension from the fifth positioning surface to the lower end surface of the cylinder bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492123.7A CN111486766B (en) | 2020-06-03 | 2020-06-03 | Gauge for engine cylinder block with five positioning surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492123.7A CN111486766B (en) | 2020-06-03 | 2020-06-03 | Gauge for engine cylinder block with five positioning surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111486766A true CN111486766A (en) | 2020-08-04 |
| CN111486766B CN111486766B (en) | 2024-07-02 |
Family
ID=71811430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492123.7A Active CN111486766B (en) | 2020-06-03 | 2020-06-03 | Gauge for engine cylinder block with five positioning surfaces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111486766B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014124570A (en) * | 2012-12-26 | 2014-07-07 | Nissan Motor Co Ltd | Positioning device and positioning method |
| CN105014449A (en) * | 2015-07-31 | 2015-11-04 | 昆明云内动力股份有限公司 | Fixture assembly for machining and positioning engine cylinder block |
| CN105115399A (en) * | 2015-09-09 | 2015-12-02 | 广西玉柴机器股份有限公司 | Air cylinder body bore hole spigot depth detection tool |
| CN108645324A (en) * | 2018-05-02 | 2018-10-12 | 中国航发成都发动机有限公司 | A kind of big listrium medial surface angle detection device of turbo blade |
| CN212567190U (en) * | 2020-06-03 | 2021-02-19 | 广西玉柴机器股份有限公司 | Checking fixture for engine cylinder block with five positioning surfaces |
-
2020
- 2020-06-03 CN CN202010492123.7A patent/CN111486766B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014124570A (en) * | 2012-12-26 | 2014-07-07 | Nissan Motor Co Ltd | Positioning device and positioning method |
| CN105014449A (en) * | 2015-07-31 | 2015-11-04 | 昆明云内动力股份有限公司 | Fixture assembly for machining and positioning engine cylinder block |
| CN105115399A (en) * | 2015-09-09 | 2015-12-02 | 广西玉柴机器股份有限公司 | Air cylinder body bore hole spigot depth detection tool |
| CN108645324A (en) * | 2018-05-02 | 2018-10-12 | 中国航发成都发动机有限公司 | A kind of big listrium medial surface angle detection device of turbo blade |
| CN212567190U (en) * | 2020-06-03 | 2021-02-19 | 广西玉柴机器股份有限公司 | Checking fixture for engine cylinder block with five positioning surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111486766B (en) | 2024-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100592026C (en) | Taper plug gauge | |
| EP3543642A1 (en) | Gage for measuring distance from hole center to plane | |
| CN103471481A (en) | Spherical outside surface diameter and profile tolerance measuring instrument | |
| CN201955042U (en) | External circle diameter measuring caliper gauge | |
| CN105371722A (en) | Checking tool capable of measuring 0.7-dimension end surface teeth | |
| CN212567190U (en) | Checking fixture for engine cylinder block with five positioning surfaces | |
| CN101487683B (en) | Ultra-large diameter accurate detector | |
| CN111486766A (en) | Checking fixture for engine cylinder block with five positioning surfaces | |
| CN200975895Y (en) | Detecting table | |
| CN202661012U (en) | Outer spherical diameter and profile measuring instrument | |
| CN215338127U (en) | Profile tolerance gauge | |
| CN211576232U (en) | Standard device of grating type indicating meter calibrating instrument | |
| CN210981095U (en) | Online wall thickness detection tool for special-shaped ring part | |
| CN209978760U (en) | Automobile synchronizer ring gear detection device | |
| CN201476746U (en) | Vertical hole pitch measurement device | |
| CN212158383U (en) | Dimension measuring device for seal ring boring process of split pump | |
| CN108895941B (en) | Measuring method and measuring device for inner block type parts | |
| CN201440064U (en) | Measuring device for measuring space between two holes | |
| CN219015165U (en) | Device for detecting length and size of limited space | |
| US5799406A (en) | Coordinate measuring machine certification apparatus | |
| CN211783278U (en) | Workpiece bending deformation meter measuring and checking tool | |
| CN205245927U (en) | 0. 7 size in measurable quantity terminal surface tooth examine utensil | |
| CN205403646U (en) | Electricity front -end of spindle and main shaft body fixing dimension NULL device | |
| CN212721170U (en) | Plug gauge calibrating device | |
| CN216283115U (en) | Utensil is examined to fuel tank oil pump locking dish |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |