CN105004255A - Auxiliary apparatus for measuring coaxiality of double-end stud - Google Patents

Auxiliary apparatus for measuring coaxiality of double-end stud Download PDF

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Publication number
CN105004255A
CN105004255A CN201510487300.1A CN201510487300A CN105004255A CN 105004255 A CN105004255 A CN 105004255A CN 201510487300 A CN201510487300 A CN 201510487300A CN 105004255 A CN105004255 A CN 105004255A
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CN
China
Prior art keywords
screw
thread bush
studs
threaded bush
thread
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Pending
Application number
CN201510487300.1A
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Chinese (zh)
Inventor
梁振杰
秦宗力
杨冬梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yuchai Machinery Co Ltd
Original Assignee
Guangxi Yuchai Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Yuchai Machinery Co Ltd filed Critical Guangxi Yuchai Machinery Co Ltd
Priority to CN201510487300.1A priority Critical patent/CN105004255A/en
Publication of CN105004255A publication Critical patent/CN105004255A/en
Pending legal-status Critical Current

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Abstract

Disclosed in the invention is an auxiliary apparatus for measuring coaxiality of a double-end stud. The auxiliary apparatus comprises two equal-height V-shaped blocks, a first threaded bush, a second threaded bush, a first ball-headed locking screw, and a second ball-headed locking screw. Threaded holes cooperating with threads of the double-end stud are formed inside the first threaded bush and the second threaded bush; and cylindrical surfaces are formed as the outsides of the first threaded bush and the second threaded bush. The first threaded bush and the second threaded bush are used for screwing two ends of a to-be-measured double-end stud tightly and respectively; and the first ball-headed locking screw and the second ball-headed locking screw are used for screwing the outer ends of the first threaded bush and the second threaded bush tightly to enable the first threaded bush and the second threaded bush to be expanded and tensioned at the two ends of the double-end stud. The cylindrical surfaces of the first threaded bush and the second threaded bush are respectively arranged on V-shaped surfaces of the two equal-height V-shaped blocks. With the auxiliary apparatus, the axis of the reference external thread can be simulated correctly; the measurement is accurate; and the operation is simple.

Description

Measure the servicing unit of studs right alignment
Technical field
The present invention relates to the detection field of the geometrical property project of the part of internal combustion engine, particularly a kind of servicing unit measuring studs right alignment.
Background technology
In the manufacture of internal combustion engine (automobile), need to detect the geometrical property project of cylinder head stud (studs), such as detect cylinder head stud intermediate shank portion external cylindrical surface axis to the right alignment of benchmark external thread (left end external thread) axis and right-hand member axis of external thread to the detection of the right alignment project of benchmark external thread (left end external thread) axis.
At present, general two conical sliding supports or the common contour V-block of adopting is measured by the method measuring diameter run-out.When remaining with center pit for studs, can adopt two conical sliding support, but must be equipped with face gauge head, measuring error is large.For when not remaining with center pit, common contour V-block can only be adopted to be measured by the method measuring diameter run-out, in this case because only can beyond Major Diam (footpath, top) as measuring basis, axis of external thread simulation difficulty, measuring principle does not meet actual requirement, and measurement result exists many disputes.The existence of this contradiction, is unfavorable for quality control.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of servicing unit measuring studs right alignment, can correctly simulate benchmark axis of external thread, measure accurately, simple to operate.
For achieving the above object, the invention provides a kind of servicing unit measuring studs right alignment, comprising: two contour V-blocks; First screw-thread bush, the inside of the first screw-thread bush is the threaded hole with the threaded engagement of studs, and the outside of the first screw-thread bush is the face of cylinder; Second screw-thread bush, the inside of the second screw-thread bush is the threaded hole with the threaded engagement of studs, and the outside of the second screw-thread bush is the face of cylinder; And first bulb lock-screw and the second bulb lock-screw; Wherein the first screw-thread bush and the second screw-thread bush are used for twisting the two ends being connected on studs to be measured respectively, first bulb lock-screw and the second bulb lock-screw be used for respectively being tightened in the first screw-thread bush and the second screw-thread bush outer end so that by the first screw-thread bush and the second screw-thread bush tensioner at the two ends of studs, the face of cylinder of the first screw-thread bush and the second screw-thread bush is used for being placed on the V-type face of two contour V-blocks respectively.
Preferably, the first bulb lock-screw and the second bulb lock-screw comprise external thread section and handling section.
Preferably, handling section has reticulate pattern.
Preferably, two arranged side by side being arranged on of contour V-block detect on flat board.
Compared with prior art, the present invention has following beneficial effect:
1., by arranging two screw-thread bushes, guarantee that measuring servicing unit can correctly simulate benchmark axis of external thread;
2. by arranging the first bulb lock-screw and the second bulb lock-screw carrys out tensioner studs, make two of studs to be measured sections of external threads work in central diameter, realistic measuring principle, result science is surveyed on border, and operation letter is convenient.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the servicing unit according to measurement studs right alignment of the present invention, does not comprise V-block;
Fig. 2 is the structural representation of bulb lock-screw in the servicing unit according to measurement studs right alignment of the present invention;
Fig. 3 is the structural representation of line lining in the servicing unit according to measurement studs right alignment of the present invention;
Fig. 4 is the instrumentation plan of the servicing unit utilizing measurement studs right alignment of the present invention.
Main Reference Numerals illustrates:
1-studs, 21-first screw-thread bush, 22-second screw-thread bush, 31-first bulb lock-screw, 32-second bulb lock-screw, 4-dial gauge.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole instructions and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or ingredient, and do not get rid of other element or other ingredient.
As shown in Figure 1 to Figure 3, according to a kind of servicing unit measuring studs right alignment of the specific embodiment of the invention, comprise two contour V-blocks 51 (see Fig. 4), the first screw-thread bush 21, second screw-thread bush 22, first bulb lock-screw 31 and the second bulb lock-screw 32.Wherein the inside of the first screw-thread bush 21 is the threaded hole 212 with the threaded engagement of studs 1, the outside of the first screw-thread bush 21 is the face of cylinder 211, the inside of the second screw-thread bush 22 is the threaded hole with the threaded engagement of studs 1, the outside of the second screw-thread bush 22 is that the face of cylinder is (see Fig. 3, second screw-thread bush 22 is identical with the first screw-thread bush 21 structure, and the first screw-thread bush 21 is only shown in figure).In addition, the first bulb lock-screw 31 and the second bulb lock-screw 32 are used for being tightened in the two ends of the first screw-thread bush 21 and the second screw-thread bush 22 respectively, and it act as tensioner studs 1.Correspondingly, the internal thread 213 (see Fig. 3) with the first bulb lock-screw 31 and the second bulb lock-screw 32 threaded engagement is provided with in the inside of the first screw-thread bush 21 second screw-thread bush 22.
In such scheme, when needing to measure, first screw-thread bush 21 and the second screw-thread bush 22 are used for respectively twist the two ends being connected on studs 1 to be measured, first bulb lock-screw 31 and the second bulb lock-screw 32 be used for respectively being tightened in the first screw-thread bush 21 and the second screw-thread bush 22 outer end so that by the first screw-thread bush 21 and the second screw-thread bush 22 tensioner at the two ends of studs 1, on the V-type face that the face of cylinder of the first screw-thread bush 21 and the second screw-thread bush 22 is used for being placed in two contour V-blocks 51 respectively (see Fig. 4).In the present embodiment, by the second screw-thread bush 22 of the right-hand member axis of external thread of the first screw-thread bush 21 and simulated dual header stud 1 that design the left end axis of external thread of a simulated dual header stud 1, and can two bulb lock-screws (first bulb lock-screw 31 and the second bulb lock-screw 32) of tensioner two kinds of screw-thread bushes vertically, the axis of external thread of studs 1 is made to be converted to the axis (face of cylinder of the first screw-thread bush 21 and the second screw-thread bush 22) of smooth, cylindrical peripheral surface, coordinate two contour V-blocks 51 and dial gauge 4 to be beated by the intermediate shank portion external cylindrical surface measuring studs 1 and can measure the right alignment of studs 1.Which solves measure studs 1 intermediate shank portion external cylindrical surface axis to the right alignment of benchmark external thread (left end external thread) axis and measure the right alignment of studs 1 right-hand member axis of external thread to benchmark external thread (left end external thread) axis time axis of external thread simulation difficulty, measuring principle is realistic, and operating process is simple, safety.
As a kind of preferred embodiment, first bulb lock-screw 31 and the second bulb lock-screw 32 comprise external thread section 311 and handling section 312 (see Fig. 2, second bulb lock-screw 32 is identical with the first bulb lock-screw 31 structure, and the first bulb lock-screw 31 is only shown in figure).Preferably, handling section 312 has reticulate pattern, conveniently tightens.
As a kind of preferred embodiment, two arranged side by side being arranged on of contour V-block 51 detect on dull and stereotyped 5.V-block 51 is arranged firmly.
Below for the cylinder head stud product of certain model, illustrate this device at measurement cylinder head studs intermediate shank portion external cylindrical surface axis to the right alignment of benchmark external thread (left end external thread) axis and right-hand member axis of external thread to the application of the right alignment project of benchmark external thread (left end external thread) axis, concrete steps are as follows:
1) studs of this servicing unit and tested cylinder head is placed on platform, and with clean cotton by each for servicing unit working surface wiped clean.
2) first with hand, two screw-thread bushes are screwed on the corresponding external thread of tested studs respectively, and with two bulb lock-screw tensioners, two screw-thread bushes, now, the actual position of working of the corresponding external thread of studs of this cylinder head is central diameter instead of large footpath, measures realistic.
3) device that this assembles is placed on the V-type face of two contour V-blocks 51 on test flat plate 5, the face of cylinder of the first screw-thread bush 21 that observation is tightened in benchmark thread end (left end external thread) contact with the V-type face of V-block 51 fit good, dial gauge 4 is adopted to measure the diameter run-out on the face of cylinder at the middle part of tested studs 1 according to a conventional method, by calculating the coaxiality error of the face of cylinder relative datum end axis of external thread obtained in the middle part of tested studs.
4) measure end, unscrew bulb lock-screw with instrument two, and two screw-thread bushes are back-outed from the studs of tested cylinder head.
5) by the clean each working surface of cotton wiped clean of measurement servicing unit, oil and deposit and preserve.
To sum up, the servicing unit of the measurement studs right alignment of the present embodiment, by arranging two screw-thread bushes, guarantees that measuring servicing unit can correctly simulate benchmark axis of external thread.Secondly by arranging the first bulb lock-screw 31 and the second bulb lock-screw 32 carrys out tensioner studs 1, make two sections of external threads of studs 1 to be measured work in central diameter, realistic measuring principle, result science is surveyed on border, and operation letter is convenient.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.

Claims (4)

1. measure a servicing unit for studs right alignment, it is characterized in that, comprising:
Two contour V-blocks;
First screw-thread bush, the inside of described first screw-thread bush is the threaded hole with the threaded engagement of described studs, and the outside of described first screw-thread bush is the face of cylinder;
Second screw-thread bush, the inside of described second screw-thread bush is the threaded hole with the threaded engagement of described studs, and the outside of described second screw-thread bush is the face of cylinder; And
First bulb lock-screw and the second bulb lock-screw;
Wherein said first screw-thread bush and described second screw-thread bush are used for twisting the two ends being connected on studs to be measured respectively, described first bulb lock-screw and described second bulb lock-screw be used for respectively being tightened in described first screw-thread bush and described second screw-thread bush outer end so that by described first screw-thread bush and described second screw-thread bush tensioner at the two ends of described studs, the face of cylinder of described first screw-thread bush and described second screw-thread bush is used for being placed on the V-type face of described two contour V-blocks respectively.
2. the servicing unit of measurement studs right alignment according to claim 1, is characterized in that, described first bulb lock-screw and described second bulb lock-screw comprise external thread section and handling section.
3. the servicing unit of measurement studs right alignment according to claim 2, is characterized in that described handling section has reticulate pattern.
4. the servicing unit of measurement studs right alignment according to claim 1, is characterized in that, what described two contour V-blocks were arranged side by side is arranged on detection flat board.
CN201510487300.1A 2015-08-10 2015-08-10 Auxiliary apparatus for measuring coaxiality of double-end stud Pending CN105004255A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106441048A (en) * 2016-12-08 2017-02-22 安庆中船柴油机有限公司 Screw thread coaxial detection positioning sleeve, detection tool and method
CN113959312A (en) * 2021-10-15 2022-01-21 晋西工业集团有限责任公司 Coaxiality detection method for cylindrical part with threads at two ends

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Publication number Priority date Publication date Assignee Title
JPS57187610A (en) * 1981-05-14 1982-11-18 Mitsubishi Electric Corp Measuring device for coaxial degree of tubular and cylindrical objects
CN2744440Y (en) * 2004-11-05 2005-12-07 汪兆钧 Steel-plastic composite tube side port sealing machine
CN201787889U (en) * 2010-08-15 2011-04-06 芜湖众力部件有限公司 Screw hole positioning device
CN102501150A (en) * 2011-10-31 2012-06-20 江苏竹箦阀业有限公司 Bevel gear clamping tool
CN202814322U (en) * 2012-10-19 2013-03-20 天津冶金职业技术学院 Concentricity detection device for sleeve part
CN202928514U (en) * 2012-10-23 2013-05-08 南昌康富电机技术有限公司 Generator rotation shaft coaxiality detection fixture
CN203371062U (en) * 2013-07-26 2014-01-01 湖北三江航天万山特种车辆有限公司 Tensioning taper mandrel
CN203837643U (en) * 2014-04-16 2014-09-17 长沙中天机械铸造有限公司 Mold for detecting coaxiality of elevator rope pulley
CN204228520U (en) * 2014-09-30 2015-03-25 淮北宇鑫新型材料有限公司 A kind of fixture
CN204807073U (en) * 2015-08-10 2015-11-25 广西玉柴机器股份有限公司 Measure auxiliary device of stud axiality

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187610A (en) * 1981-05-14 1982-11-18 Mitsubishi Electric Corp Measuring device for coaxial degree of tubular and cylindrical objects
CN2744440Y (en) * 2004-11-05 2005-12-07 汪兆钧 Steel-plastic composite tube side port sealing machine
CN201787889U (en) * 2010-08-15 2011-04-06 芜湖众力部件有限公司 Screw hole positioning device
CN102501150A (en) * 2011-10-31 2012-06-20 江苏竹箦阀业有限公司 Bevel gear clamping tool
CN202814322U (en) * 2012-10-19 2013-03-20 天津冶金职业技术学院 Concentricity detection device for sleeve part
CN202928514U (en) * 2012-10-23 2013-05-08 南昌康富电机技术有限公司 Generator rotation shaft coaxiality detection fixture
CN203371062U (en) * 2013-07-26 2014-01-01 湖北三江航天万山特种车辆有限公司 Tensioning taper mandrel
CN203837643U (en) * 2014-04-16 2014-09-17 长沙中天机械铸造有限公司 Mold for detecting coaxiality of elevator rope pulley
CN204228520U (en) * 2014-09-30 2015-03-25 淮北宇鑫新型材料有限公司 A kind of fixture
CN204807073U (en) * 2015-08-10 2015-11-25 广西玉柴机器股份有限公司 Measure auxiliary device of stud axiality

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106441048A (en) * 2016-12-08 2017-02-22 安庆中船柴油机有限公司 Screw thread coaxial detection positioning sleeve, detection tool and method
CN113959312A (en) * 2021-10-15 2022-01-21 晋西工业集团有限责任公司 Coaxiality detection method for cylindrical part with threads at two ends

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