CN111486766B - Gauge for engine cylinder block with five positioning surfaces - Google Patents
Gauge for engine cylinder block with five positioning surfaces Download PDFInfo
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- CN111486766B CN111486766B CN202010492123.7A CN202010492123A CN111486766B CN 111486766 B CN111486766 B CN 111486766B CN 202010492123 A CN202010492123 A CN 202010492123A CN 111486766 B CN111486766 B CN 111486766B
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000005259 measurement Methods 0.000 claims description 19
- 238000007689 inspection Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Abstract
The invention discloses a gauge 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 the 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 positions of the two ends of the base corresponding to the fourth positioning surface and the fifth positioning surface of the engine cylinder block. 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 gauge for an engine cylinder block with five positioning surfaces.
Background
One cylinder body of the existing engine is designed with five positioning surfaces as positioning references for processing of a production line. The five positioning surfaces have higher size requirements on the key parts of the cylinder body, namely the center of the cylinder hole and the lower end face of the cylinder hole, and the position sizes of the five positioning surfaces have larger influence on the processing quality of the subsequent processing procedures, so that the processing quality is strictly controlled.
The method for detecting the position sizes of the five positioning surfaces of the cylinder block in the prior art comprises the following steps:
1. The side surface of the cylinder body with three positioning surfaces is lifted up to an inspection platform, the other side surface of the cylinder body is supported by three jacks, and the center 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 body relative to the inspection platform and the height dimension of the three positioning surfaces by using a vernier caliper, and measuring the diameter of the cylinder hole by using a vernier caliper, and respectively calculating the distances from the three positioning surfaces to the center of the cylinder hole.
2. The cylinder body is lifted down to an inspection platform by 90 degrees on a station device, the top surface of the cylinder body faces downwards, the lower end surfaces of cylinder holes of the cylinder body face upwards, the cylinder body is lifted up to the inspection platform, the top surface of the cylinder body is supported by three jacks, the lower end surfaces of the two cylinder holes at the front end and the rear end of the cylinder body are leveled by the jacks, the height dimension of the lower end surfaces of the cylinder holes at the front end and the rear end of the cylinder body relative to the inspection platform and the height dimension of the other two positioning surfaces are measured by a vernier height gauge with a lever dial indicator, and then the distance from the other two positioning surfaces to the lower end surfaces of the cylinder holes is calculated.
However, the method of detecting the position sizes of the five positioning surfaces of the cylinder block has the following drawbacks:
1. in the inspection platform, the center lines of the two cylinder holes at the front end and the rear end of the cylinder body are horizontally adjusted through the jack, and the lower end faces of the two cylinder holes at the front end and the rear end of the cylinder body are horizontally adjusted through repeated adjustment for many times, so that the operation is inconvenient and the efficiency is low.
2. The detection result can be obtained only by complex calculation after the position sizes of the five positioning surfaces of the cylinder body are detected.
3. The five positioning surfaces of the cylinder body have two-direction position sizes, the upper inspection platform needs to be hung and hung twice, the middle part of the cylinder body needs to be overturned by 90 degrees, 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 of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a gauge for an engine cylinder block with five positioning surfaces, which can remarkably improve the detection speed and the detection efficiency and can greatly reduce the labor intensity of workers.
In order to achieve the above object, the present invention provides a gauge for an engine block having five positioning surfaces, the five positioning surfaces of the engine block being located on the same side of the engine block, wherein a first positioning surface and a second positioning surface are located at both ends of an upper portion of the engine block, a third positioning surface is located in a middle of a lower portion of the engine block, and a fourth positioning surface and a fifth positioning surface are located at both ends of a middle portion of the engine block, the gauge for an engine block having 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 the 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 positions of the two ends of the base corresponding to the fourth positioning surface and the fifth positioning surface of the engine cylinder block; the inner holes and the end faces of the first guide sleeve and the second guide sleeve are respectively used as measurement references for measuring the first positioning surface and the second positioning surface by the first measuring device, the inner holes and the end faces of the third guide sleeve are respectively used as measurement references 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 equal in height to the fourth positioning surface and the fifth positioning surface so as to be used as measurement references 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 detecting support plate and the second detecting support plate are wedge-shaped plates, the third detecting support plate is a rectangular plate, and the fourth detecting support plate and the fifth detecting support plate are "plates".
In one 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 simultaneously matched with the left end of the positioning sleeve and a stepped hole in the middle, and the spring is sleeved between a shaft shoulder of the mandrel and a shoulder surface at the left end of a hole in the middle of the positioning sleeve, so that the mandrel pushes the measuring head to reliably contact with a measuring surface under the action of spring force.
In one embodiment of the invention, the 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 the cylindrical pin is arranged in a transverse small hole at the right end of the mandrel and is clamped in a transverse U-shaped hole at the right end of the positioning sleeve, the external thread at the left end of the first gauge stand is screwed into a screw hole at the right end of the positioning sleeve, the first opening bush is sleeved into an inner hole of the gauge stand and is flush with the right end of the gauge stand, the first dial indicator 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 stand.
In one embodiment of the present invention, the second measuring device and the first measuring device have the same structure, but the length of the probe of the second measuring device and the length of the side head of the first measuring device are different.
In one embodiment of the invention, the gauge for the engine cylinder block with five positioning surfaces further comprises a first calibration device and a second calibration device, wherein the first calibration device comprises a sleeve and a counter block, the sleeve is screwed into an external thread at the upper end of the counter block, the counter block is fixed in a screw hole which is far to the left in the middle of the front side of the top surface of the base through a thread at the lower end, the distance from the upper end surface of the counter 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 measurement device to the outer circular step surface of the positioning sleeve, the second calibration device is identical to the first calibration device in structure, and the second calibration device is used for calibrating a second measurement device for measuring the dimensional error of the distance from the third positioning surface of the engine cylinder block to the center of a cylinder hole of the cylinder block.
In one embodiment of the present invention, the first calibration device is used for placing the first measurement device for calibration, after the dial indicator is zeroed, the screw is screwed up to fix the dial indicator, the first measurement device is sleeved in the inner hole of the first guide sleeve, the positioning sleeve is tightly 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 one embodiment of the present invention, the third measuring device includes a second tightening screw, a second opening bush, a second dial indicator and a second gauge stand, wherein the second gauge stand is a notched L-shaped plate, 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 face of the second gauge stand for installing the second opening bush and the second tightening screw, respectively, so that the second dial indicator is installed in the second opening bush.
In one embodiment of the invention, when the calibrated lower plane of the third measuring device is closely 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 dimension from the fourth positioning surface to the lower end surface of the cylinder hole of the cylinder block.
In one embodiment of the present invention, when the lower plane of the third measuring device is abutted against the small plane of the upper end of the fifth detecting support plate, the measuring head of the second dial indicator contacts the fifth locating surface of the engine cylinder block, and the reading of the second dial indicator is the error of the distance dimension from the fifth locating surface to the lower end surface of the cylinder hole of the cylinder block.
Compared with the prior art, the gauge for the engine cylinder block with five positioning surfaces has the following advantages: the measuring device and the calibrating device of the detecting tool are simple in structure and quick in calibration, the detecting result can be obtained without repeatedly adjusting the cylinder body on the detecting platform for many times, the detecting speed is high, the efficiency is high, the cylinder body is not required to be overturned by 90 degrees, and the labor intensity of workers is greatly reduced.
Drawings
FIG. 1 is a front view of a gauge according to an embodiment of the present invention;
FIG. 2 is a top view of a gauge according to an embodiment of the invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along the direction B-B of FIG. 1;
FIG. 5 is a positive three-axis view of a gauge according to an embodiment of the present invention;
FIG. 6 is a front view of a first measurement device according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of FIG. 6 taken along the direction C-C;
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 embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 5, the engine block has five positioning surfaces on the same side of the engine block, wherein a first positioning surface a and a second positioning surface B are located at both ends of the upper portion of the engine block 18, a third positioning surface E is located in the middle of the lower portion of the engine block 18, and a fourth positioning surface C and a 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: base 17, first measuring device 1, first uide bushing 2, first detection extension board 3, front end jar hole positioner 4, rear end jar hole positioner 5, second uide bushing 6, second detection extension board 7, second measuring device 12, third uide bushing 13, third detection extension board 14, third measuring device 8, fourth detection extension board 9, fifth detection extension board 10 and inner chamber positioner 15. The front end cylinder hole positioning device 4, the rear end cylinder hole positioning device 5, the inner cavity positioning device 15 and the five positioning surface clamps for processing the cylinder block have the same structure (not described in detail herein) so as to ensure that the positioning reference for processing the cylinder block 18 is unified with the detected measurement reference.
As shown in fig. 1 to 5, the first detecting support plate 3 is disposed at a position of 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 the 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 the position of the front side surface of the base corresponding to the second positioning surface B of the engine cylinder block 18, 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 the position of the front side surface of the base corresponding to the third positioning surface E of the engine cylinder block, 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 provided at positions where both end faces of the base 17 face the fourth positioning face C and the fifth positioning face D of the engine 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 inner holes and 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 and the end face M3 of the third guide sleeve 13 serve as measurement references for the second measuring device 12 to measure the third positioning face 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 equal in height to the fourth positioning surface C and the fifth positioning surface D, so that the third measuring devices 8 can be used as measuring references for measuring the fourth positioning surface C and the fifth positioning surface D. Where H is the size of the cylinder bore burr surface, as shown in fig. 4.
In an embodiment of the present invention, the first detecting support plate 3 and the second detecting support plate 7 are wedge-shaped plates, the third detecting support plate 14 is rectangular, and the fourth detecting support plate 9 and the fifth detecting support plate 10 are "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 mandrel 112, a spring 113, and a positioning sleeve 114, where an external thread at the right end of the measuring head 111 is screwed into a screw hole at the left end of the mandrel 112, two stepped outer circles of the mandrel 112 are simultaneously matched with the left end and a stepped hole in the middle of the positioning sleeve 114, and the spring 113 is sleeved between a shoulder of the mandrel 112 and a shoulder surface at the left end of a hole in the middle of the positioning sleeve 114, so that the mandrel 112 pushes the measuring head 111 to reliably contact with a measuring surface under the action of spring force.
In one embodiment of the present 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 dial indicator 119. The cylindrical pin 116 is disposed in a transverse small hole at the right end of the mandrel 112 and is 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 sleeved in the inner hole of the first gauge stand 116 and is flush with the right end of the first gauge stand 116, the first dial indicator 119 is arranged in the inner hole of the first opening bushing 117, and the first tightening screw 118 is screwed into the transverse screw hole of the first gauge stand 116. The measuring head of the first dial indicator 119 is in plane contact with the right end of the mandrel 112 and has a certain gauge pressing amount.
In one embodiment of the present invention, the gauge for an engine block having five positioning surfaces further includes a first calibration device 11 and a second calibration device 16, wherein the second calibration device 16 has the same structure as the first calibration device 11. As shown in fig. 3-7, the first calibration device 11 includes a sleeve 121 and a counter block 122. Wherein, sleeve 121 is screwed into the external screw thread of the upper end of counter 122, and counter 122 is fixed in the screw hole of the middle left of the front side of the top surface of base 17 through the screw thread of the lower end. The distance from the upper end surface of the gauge block 122 to the upper end surface of the sleeve 121 is equal to the distance from the left side surface of the gauge 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 to calibrate, after the first dial indicator 119 is zeroed, the first tightening screw 118 is tightened to fix the first dial indicator 119, the first measuring device 1 is sleeved in the inner hole of the first guide sleeve 2, and the K surface of the positioning sleeve 114 is tightly attached to the end surface M1 of the first guide sleeve 2, at this time, 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 cylinder block 18 to the cylinder hole center of the cylinder block. Similarly, the calibrated first measuring device 1 is sleeved into the inner hole of the second guide sleeve 6, the K surface of the positioning sleeve 114 is tightly attached to the end surface M2 of the second guide sleeve 6, and 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 invention, the second measuring device 12 is identical in construction to the first measuring device 1, and the second measuring device 12 is calibrated in the same way as the first measuring device 1. And the method of calibrating the dial indicator by the second calibration device 16 is the same, and the error of the distance dimension E from the third positioning surface E of the engine cylinder block 18 to the center of the cylinder hole of the cylinder block can be measured by replacing the measuring head with a proper length.
In one embodiment of the present invention, as shown in fig. 8, the third measuring device 8 includes 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 notched rectangular plate, and has a through hole formed in a vertical direction of a thin portion of the second gauge stand 814 and a screw hole formed in an end surface thereof, and is used for installing the second opening bush 812 and the second tightening screw 811, respectively, so that the second dial indicator 813 is installed in the second opening bush 812. As shown in fig. 1, 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 at the same height as the fourth positioning surface C and the fifth positioning surface D of the cylinder block, so that the dial indicator can be calibrated by simply placing the third measuring device 8 on the platform.
In one embodiment of the present invention, when the calibrated lower plane V of the third measuring device 8 is abutted against the small plane N1 of 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 at this time, 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 hole of the cylinder block.
In one embodiment of the present invention, when the lower plane V of the third measuring device 8 is abutted against the small plane N2 of the upper end of the fifth detecting support plate 10, the gauge head 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 block bore.
The foregoing descriptions of specific exemplary embodiments of the present invention are 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 the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various 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 (7)
1. A gauge 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 both ends of an upper portion of the engine block, a third locating surface is located in a middle of a lower portion of the engine block, and a fourth locating surface and a fifth locating surface are located at both ends of a middle portion of the engine block, the gauge for an engine block having five locating 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 a position, corresponding to the 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 respectively arranged at positions of the two end faces of the base corresponding to the fourth positioning surface and the fifth positioning surface of the engine cylinder block;
The inner holes and the end faces of the first guide sleeve and the second guide sleeve are respectively used as measurement references for measuring the first positioning surface and the second positioning surface by a first measurement device, the inner holes and the end faces of the third guide sleeve are respectively used as measurement references for measuring the third positioning surface by a second measurement 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 equal in height to the fourth positioning surface and the fifth positioning surface so as to be used as measurement references for measuring the fourth positioning surface and the fifth positioning surface by a third measurement device;
the first detection support plate and the second detection support plate are 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;
The first measuring device comprises a measuring head, a mandrel, a spring and a first 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 simultaneously matched with the left end of the first positioning sleeve and a stepped hole in the middle, 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 first positioning sleeve, so that the mandrel pushes the measuring head to reliably contact with a measuring surface under the action of spring force;
The 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 the cylindrical pin is arranged in a transverse small hole at the right end of the mandrel and clamped in a transverse U-shaped hole at the right end of the first positioning sleeve, an external thread at the left end of the first gauge stand is screwed into a screw hole at the right end of the first positioning sleeve, the first opening bush is sleeved into an inner hole of the first gauge stand and is flush with the right end of the first gauge stand, the first dial indicator 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 stand.
2. The gauge for an engine block having five positioning surfaces of claim 1, wherein the second measuring device and the first measuring device are identical in structure but the gauge head length of the second measuring device and the gauge head length of the first measuring device are different.
3. The gauge for an engine block having five positioning surfaces according to claim 2, further comprising a first calibration device and a second calibration device, the first calibration device comprising a sleeve and a counter block, wherein the sleeve is screwed into an external thread at an upper end of the counter block, the counter block is fixed in a screw hole on the middle left side of a front side of the top surface of the base by a thread at a lower end, and a distance from an upper end surface of the counter block to an upper end surface of the sleeve is equal to a distance from a left side surface of the gauge head of the first measurement device to an outer circular step surface of the first positioning sleeve.
4. The gauge for an engine block having five positioning surfaces according to claim 3, wherein the first calibrating device is configured to be placed into the first measuring device for calibration, and after the first dial indicator is zeroed, the first tightening screw is tightened to fix the first dial indicator, the first measuring device is sleeved into the inner hole of the first guide sleeve and makes the first positioning sleeve tightly contact with the end surface of the first guide sleeve, and the reading of the first dial indicator is an error of the distance dimension from the first positioning surface of the engine block to the center of the cylinder hole of the cylinder block; when the calibrated first measuring device is sleeved in 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 indicator is the error of the distance between the second positioning surface of the engine cylinder body and the center of the cylinder hole of the cylinder body; the second calibration device has the same structure as the first calibration device, and is used for calibrating a second measurement device for measuring the dimension error of the distance from the third positioning surface of the engine cylinder block to the center of the cylinder hole of the cylinder block.
5. The gauge for an engine block having five positioning surfaces of claim 4, wherein the third measuring device comprises a second tightening screw, a second split bushing, a second dial gauge and a second gauge stand, wherein the second gauge stand is a notched "" -shaped plate, a through hole is formed in a thin portion of the second gauge stand in a vertical direction, and a screw hole is formed in an end face of the second gauge stand for mounting the second split bushing and the second tightening screw, respectively, so that the second dial gauge is mounted in the second split bushing.
6. The gauge for an engine block having five locating surfaces of claim 5, wherein when the calibrated lower plane of the third measuring device abuts against the facet of the upper end of the fourth test strip, the gauge head of the second dial indicator contacts the fourth locating surface of the engine block, and the second dial indicator reads an error in the dimension of the distance from the fourth locating surface to the lower end face of the cylinder bore of the block.
7. The gauge for an engine block having five positioning surfaces according to claim 6, wherein when the lower plane of the third measuring device is abutted against the facet of the upper end of the fifth detecting support plate, the gauge head of the second dial gauge contacts the fifth positioning surface of the engine block, and the second dial gauge reads an error in the dimension of the distance from the fifth positioning surface to the lower end surface of the cylinder block bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492123.7A CN111486766B (en) | 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 | Gauge for engine cylinder block with five positioning surfaces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111486766A CN111486766A (en) | 2020-08-04 |
| CN111486766B true CN111486766B (en) | 2024-07-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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