CN204800470U - Circularity and straightness accuracy detection device of grinding of outer face of cylinder - Google Patents
Circularity and straightness accuracy detection device of grinding of outer face of cylinder Download PDFInfo
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- CN204800470U CN204800470U CN201520403244.4U CN201520403244U CN204800470U CN 204800470 U CN204800470 U CN 204800470U CN 201520403244 U CN201520403244 U CN 201520403244U CN 204800470 U CN204800470 U CN 204800470U
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Abstract
The utility model relates to a circularity and straightness accuracy detection device of grinding of outer face of cylinder, include: fixed base (1) of fuselage with the grinding machine, install support (2) on base (1), pivoted lever (8), the displacement detects sensor (9) and signal processor spare, the one end that base (1) was kept away from to the one end and the support (2) of pivoted lever (8) forms to rotate to be connected, the other end of pivoted lever (8) is installed the displacement and is detected sensor (9), the displacement detects sensor (9) and can detect the location parameter on the outer face of cylinder of work piece (11) at detection position, signal processor spare can be received the displacement and detect the location parameter that sensor (9) detects to convert the circularity and straightness accuracy data of work piece (11) into. Externally automated inspection is realized to the circularity and the straightness accuracy of face of cylinder grinding to the detection device of this kind of embodiment to improve and detect the precision, thereby improve the machining precision.
Description
Technical field
The utility model relates to machining detection technique field, particularly relates to a kind of circularity and linearity testing apparatus of external cylindrical surface grinding.
Background technology
Along with the progress of industry, in grinding field, the face of cylinder, the form and position tolerance degree of circle product external is had higher requirement.In existing grinding process, generally special detecting instrument is adopted to carry out circularity and Linearity surveying to workpiece, then according to testing result correction grinding parameter.But repeated disassembled and assembled carries out detecting the morpheme dimensional accuracy having had a strong impact on workpiece, and inefficiency.Therefore, design and develop one and make workpiece in grinding process, directly by On-machine Test, the grinding cylinder face On-machine Test device that need not repeatedly dismantle is very necessary.
At present, a kind of external cylindrical surface grinding checkout gear is disclosed in prior art, as shown in Figure 1, comprise expansion link 3a, transmission lever 1a, prolong motion block 6a, spring 8a, amesdial 2a and housing 7a, wherein prolonging motion block 6a is fixed on expansion link 3a by the second bolt 5a, and expansion link 3a is fixed on housing 7a by the first bolt 4a, and spring 8a is positioned at transmission lever 1a, transmission lever 1a is fixed on the below of housing 7a, and amesdial 2a is positioned at the top of transmission lever 1a.
When measuring, directly expansion link 1a is hooked on the cylindrical of workpiece to be machined, makes transmission lever 1a be close to workpiece by the compressing of spring 8a, workpiece grind little in transmission lever 1a walk downward, then drive the gauge outfit contact of amesdial 2a, the pointer at this moment on amesdial 2a will reflect concrete data.By this principle, in Grinding Process, directly can read this workpiece also surplus how many grinding allowances, without the need to workpiece is taken off measurement, solve the ubiquitous problem that cannot reach on-line checkingi at present.
But this checkout gear mainly relies on amesdial to detect, and accuracy of detection is not high, and can not realize automatically detecting and record, and can only detect grinding allowance, range of application is narrower.
Utility model content
The purpose of this utility model is the circularity and the linearity testing apparatus that propose a kind of external cylindrical surface grinding, the circularity of cylinder grinding to foreign round and linearity can realize automatically detecting, and improves accuracy of detection, thus improve machining accuracy.
For achieving the above object, the utility model provides a kind of circularity and linearity testing apparatus of external cylindrical surface grinding, comprise: the base 1 fixed with the fuselage of grinding machine, support 2, pivoted lever 8, displacement detecting sensor 9 and the Signal Processing Element be arranged on described base 1
One end of described pivoted lever 8 and described support 2 are formed away from one end of described base 1 and are rotationally connected, the other end of described pivoted lever 8 is provided with described displacement detecting sensor 9, and described displacement detecting sensor 9 can detect at the location parameter of detection position to the external cylindrical surface of workpiece 11;
Described Signal Processing Element can receive the location parameter that described displacement detecting sensor 9 detects, and is converted to circularity and the linearity data of described workpiece 11.
Further, also comprise position regulator 10, described position regulator 10 is slidably arranged on described pivoted lever 8, described displacement detecting sensor 9 can be adjusted relative to the position on described pivoted lever 8 length direction, described displacement detecting sensor 9 is arranged on described position regulator 10 rotationally, can adjust the measurement attitude of described displacement detecting sensor 9.
Further, also comprise gyroaxis 5, one end of described pivoted lever 8 is connected by described gyroaxis 5 with described support 2 one end away from described base 1, described pivoted lever 8 can be made to swing in perpendicular or horizontal plane, to make described displacement detecting sensor 9 swing to non-detection position man-hour adding, swing to when detecting and detect position.
Further, also comprise driver part, described driver part is connected with described gyroaxis 5, described gyroaxis 5 can be driven to rotate thus drive described pivoted lever 8 to rotate.
Further, also comprise limiting component, described limiting component is arranged between described pivoted lever 8 and described support 2, can limit the extreme position of described pivoted lever 8 in different rotation direction, to determine to detect position and non-detection position.
Further, described limiting component comprises: limited block 5, clockwise limit switch 4 and counterclockwise limit switch 3, described limited block 5 is fixed on one end of described pivoted lever 8, described clockwise limit switch 4 and described counterclockwise limit switch 3 are fixed on described support 2, and described displacement detecting sensor 9 can be made to arrive non-detection position and detect position.
Further, described Signal Processing Element comprises: data acquisition module, data analysis module and parameter feedback module,
Described data acquisition module can receive the location parameter that described displacement detecting sensor 9 detects;
The location parameter that described displacement detecting sensor 9 detects can be scaled circularity and the linearity data of described workpiece 11 by described data analysis module;
The circularity of described workpiece 11 and linearity data feedback can be given the control system for processing of described grinding machine by described parameter feedback module, thus make described control system for processing according to feedback result adjustment machined parameters.
Based on technique scheme, the circularity of the external cylindrical surface grinding of the utility model embodiment and linearity testing apparatus, detected at the location parameter of detection position to excircle of workpiece cylinder by displacement detecting sensor, by Signal Processing Element, location parameter is converted to circularity and the linearity data of workpiece again, this checkout gear can realize automatic On-machine Test to the circularity of excircle of workpiece cylinder after grinding and linearity, thus improves detection efficiency; Also can reduce the metrical error that manual operation is introduced in addition, and displacement detecting sensor also can reach higher resolution ratio, these advantages can improve the accuracy of detection of this checkout gear as far as possible, thus improve machining accuracy.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the checkout gear of external cylindrical surface grinding in prior art;
Fig. 2 is the Facad structure schematic diagram of the circularity of the utility model external cylindrical surface grinding and an embodiment of linearity testing apparatus;
Fig. 3 is inverse layer structure schematic diagram embodiment illustrated in fig. 2.
Description of reference numerals
1a-transmission lever; 2a-amesdial; 3a-expansion link; 4a-first bolt; 5a-second bolt; 6a-prolongs motion block; 7a-housing; 8a-spring;
1-base; 2-support; 3-is counterclockwise limit switch; The clockwise limit switch of 4-; 5-gyroaxis; 6-limited block; 7-motor; 8-pivoted lever; 9-displacement detecting sensor; 10-position regulator; 11-workpiece.
Detailed description of the invention
Below describe the utility model in detail.In the following paragraphs, the different aspect of embodiment is defined in more detail.The each side of restriction like this can combine with any other one aspect or many aspects, not may be combined with unless explicitly stated otherwise.Especially, be considered to preferred or favourable any feature and one or morely can be considered to preferred or favourable feature with other.
Inventor notices, external cylindrical surface grinding checkout gear accuracy of detection of the prior art is lower, main cause is, this checkout gear mainly relies on amesdial to detect, when workpiece rotates, operator is needed to read some data by amesdial in one week, again these data are compared or calculated, wherein chosen position, read data and compare calculating all by manually carrying out, will introduce a lot of human factors like this thus affect final accuracy of detection, and detection efficiency is comparatively low.In addition, the highest accuracy of detection that can only reach 0.001mm of this metering outfit of amesdial, for the process equipment of this precision of grinding machine, if need to reach higher grinding requirement, then can be subject to the restriction of checkout equipment precision and can not realize higher machining accuracy.
For the shortcoming that checkout equipment of the prior art exists, the utility model provides a kind of circularity and linearity testing apparatus of external cylindrical surface grinding, Facad structure schematic diagram as shown in Figure 2 and the inverse layer structure schematic diagram shown in Fig. 3, comprise: with the base 1 that the fuselage of grinding machine is fixing, be arranged on the support 2 on base 1, pivoted lever 8, displacement detecting sensor 9 and Signal Processing Element, one end of pivoted lever 8 and support 2 are formed away from one end of base 1 and are rotationally connected, the other end of pivoted lever 8 is provided with displacement detecting sensor 9, displacement detecting sensor 9 can detect at the location parameter of detection position to the external cylindrical surface of workpiece 11, Signal Processing Element can receive the location parameter that displacement detecting sensor 9 detects, and is converted to circularity and the linearity data of workpiece 11.Wherein, can be positioned between base 1 and the fuselage of grinding machine by pin, and adopt bolt to be fixed connection, support 2 is arranged on base 1, for supporting detection main part.
Checkout gear of the present utility model is applicable to all circularity of non-eccentricity external cylindrical surface and the On-machine Test of linearity.Compared with prior art, displacement detecting sensor can carry out location parameter detection in detection position to workpiece, by Signal Processing Element, the location parameter detected is converted to circularity and the linearity data of workpiece again, can be implemented in machine testing, the secondary clamping of workpiece is not related to yet, thus can realize detection and the data processing of automation, the detection efficiency of workpiece can be improved.The utility model is compared with the scheme adopting amesdial to detect in addition, the error introduced by manual operation is less, and the minimum resolution of displacement detecting sensor can reach 0.03% of detection length, in the utility model, the detection length of workpiece is the circular runout of workpiece, maximum can not more than 0.05mm, the resolution ratio of known displacement detecting sensor is no more than 0.000015mm, higher than the certainty of measurement of amesdial.By analyzing, the circularity of external cylindrical surface grinding of the present utility model and linearity testing apparatus can improve the accuracy of detection of workpiece, thus improve machining accuracy further.
Further, this checkout gear also comprises position regulator 10, position regulator 10 is slidably arranged on pivoted lever 8, displacement detecting sensor 9 can be adjusted relative to the position on pivoted lever 8 length direction, displacement detecting sensor 9 is arranged on position regulator 10 rotationally, can adjust the measurement attitude of displacement detecting sensor 9.
Particularly, pivoted lever 8 can be designed as the rod-like structure that cross section is rectangle, position regulator 10 offers size and the suitable rectangular through slot of pivoted lever 8, position regulator 10 is set on pivoted lever 8, displacement detecting sensor 9 can be driven to adjust along the length direction of pivoted lever 8 by position regulator 10.Displacement detecting sensor 9 and position regulator 10 are fixed by hinged mode, can realize displacement detecting sensor 9 and adjust at angle direction relative to pivoted lever 8.In addition, displacement detecting sensor 9 also can adopt other structure to realize position adjustment.
Mention in above-described embodiment, one end of pivoted lever 8 and support 2 are formed away from one end of base 1 and are rotationally connected, the object of this design is: when needs carry out grinding, pivoted lever 8 is turned to non-detection position, and non-detection position is the position that the main body of checkout gear does not hinder emery wheel and workpiece 11; When needs detect, turned to by pivoted lever 8 and detect position, the grinding carriage of grinding machine will drive emery wheel away from workpiece 11 simultaneously, and detecting position is set to the position that displacement detecting sensor 9 can detect workpiece 11.This structure can realize the On-machine Test of Roundness of Workpiece and linearity, makes manufacturing procedure and detects between operation non-interference, and adjustment get up comparatively convenient.
In a kind of specific embodiment, checkout gear of the present utility model also comprises gyroaxis 5, one end of pivoted lever 8 is connected by gyroaxis 5 with support 2 one end away from base 1, pivoted lever 8 can be made to swing in perpendicular or horizontal plane, to make displacement detecting sensor 9 swing to non-detection position man-hour adding, swing to when detecting and detect position.When gyroaxis 5 is horizontally disposed with, pivoted lever 8 swings in perpendicular, see the embodiment shown in Fig. 2 and Fig. 3; When gyroaxis 5 is vertically arranged, pivoted lever 8 swings in horizontal plane.
The swing of pivoted lever 8 can manual operation, also can be realized by the mode automatically driven.Automatic driving can improve the automaticity of detection further, and during for execution batch detection task, more consistent to the position control of displacement detecting sensor 9.Particularly, this checkout gear also comprises driver part, and driver part is connected with gyroaxis 5, and gyroaxis 5 can be driven to rotate thus drive pivoted lever 8 to rotate, driver part can choose the elements such as motor, motor, oil cylinder and pulley.
In the embodiment that the utility model one is more excellent, checkout gear also comprises limiting component, and limiting component is arranged between pivoted lever 8 and support 2, can limit the extreme position of pivoted lever 8 in different rotation direction, to determine to detect position and non-detection position.
With the structure example that pivoted lever 8 swings in perpendicular, limiting component comprises: limited block 5, clockwise limit switch 4 and counterclockwise limit switch 3, limited block 5 is fixed on one end of pivoted lever 8, clockwise limit switch 4 and counterclockwise limit switch 3 are fixed on support 2, and displacement detecting sensor 9 can be made to arrive non-detection position and detect position.
Preferably, the state that pivoted lever 8 is vertical with base 1 is set as extreme position when pivoted lever 8 turns clockwise (namely lifting), the state that pivoted lever 8 is parallel with base 1 is set as extreme position when pivoted lever 8 is rotated counterclockwise (namely putting down), arranges clockwise limit switch 4 and the particular location of counterclockwise limit switch 3 on support 2 accordingly.Here the limit switch mentioned can choose contact or contactless switch, as long as can limit the extreme position of pivoted lever 8 in different rotation direction, certainly, also can adopt mechanical limit structure.
In the above-described embodiment, displacement detecting sensor 9 can adopt and detect with the non-contacting mode of workpiece 11, such as, the laser beam that displacement detecting sensor 9 sends or hyperacoustic center line are through axis of workpiece, utilize surface of the work to reflect, and then to obtain on excircle of workpiece cylinder certain any location parameter.Displacement detecting sensor 9 obtains location parameter and can be used for Signal Processing Element to carry out data processing, thus obtains circularity and the linearity data of the external cylindrical surface of workpiece 11.
In one embodiment, Signal Processing Element comprises: data acquisition module, data analysis module and parameter feedback module, and data acquisition module can receive the location parameter that displacement detecting sensor 9 detects; The location parameter that displacement detecting sensor 9 detects can be scaled circularity and the linearity data of workpiece 11 by data analysis module; Parameter feedback module can by the circularity of workpiece 11 and linearity data feedback to the control system for processing of grinding machine, thus make control system for processing according to feedback result adjustment machined parameters.
Displacement detecting sensor 9 and Signal Processing Element with the use of, the On-machine Test of automation can be realized, reduce the metrical error introduced because of manual operation, and can detection efficiency be improved.When for execution batch detection task, also can ensure the uniformity of testing conditions preferably.In addition, testing result can also be fed back to digital control processing control system by parameter feedback module, digital control processing control system adjusts machined parameters by feedback result, thus testing result can directly for process provides guidance, can processing be completed by clamped one time, not need repeatedly to dismantle, can realize like this detecting the positioning datum identical with processing employing, thus raising accuracy of detection, and then improve machining accuracy.
Understanding more clearly to have checkout gear of the present utility model, below for the grinding of certain hydraulic cylinder piston rod, to adopting checkout gear corresponding to Fig. 2 and Fig. 3, the method that piston rod detects being described in detail.
Before processing, the pivoted lever 8 of checkout gear is lowered into the position of counterclockwise limit switch 3 correspondence, and according to the size of hydraulic cylinder piston rod (i.e. workpiece 11), adjust displacement detecting sensor 9 along the position of pivoted lever 8 length direction and measurement attitude, thus arrive suitable detection position, and this detection position is kept in Signal Processing Element as initial position parameters.The object of this operation is so that after grinding completes, when needing to detect workpiece 11, directly workpiece 11 is adjusted to the right place according to the initial position parameters of preserving in Signal Processing Element, again need not adjust the position of displacement detecting sensor 9 relative to workpiece 11.Perform before detection preparation is placed on processing parts, can detection time be shortened thus improve processing and detection efficiency.
For the set-up procedure before processing, be illustrated for several different situation here.One, be provided with limit assembly in checkout gear, after making pivoted lever 8 swing to extreme counterclockwise position before processing, do not need to adjust the position of displacement detecting sensor 9 by position regulator 10 and measure attitude, just just arrive and detect position, at this moment just can obtain detection initial position parameters.Its two, be provided with limit assembly in checkout gear, but processing before make pivoted lever 8 swing to extreme counterclockwise position after, still need by position regulator 10 adjust displacement detecting sensor 9 position and measure attitude.Its three, in checkout gear, limit assembly is not set, needs to control pivoted lever 8 by servomotor etc. with the driver part of position feedback and swing to correct position, then adjust the position of displacement detecting sensor 9 by position regulator 10 and measure attitude.
When grinding, pivoted lever 8 is raised up to the position of clockwise limit switch 4 correspondence, checkout gear can not have influence on normal grinding.
After grinding terminates, when needing to detect, emery wheel is driven to return (namely away from workpiece) grinding carriage of grinding machine, motor 7 drives gyroaxis 5 to make pivoted lever 8 turn to the position of counterclockwise limit switch 3 correspondence from the position of clockwise limit switch 4 correspondence, when limited block 6 arrives the position of counterclockwise limit switch 3 correspondence, motor 7 stops operating.Then, hydraulic cylinder piston rod adjustment adjusted to the right place according to initial position parameters by the workbench of grinding machine, at this moment displacement detecting sensor 9 also just reaches measuring position.The position of pivoted lever 8 and workpiece adjusts these two steps can reversed order mutually.
Then, hydraulic cylinder piston rod is returned and circles, make displacement detecting sensor 9 detect the radial position parameter of in current cross-section one week, simultaneously preserve the sampled data of a week by data collecting module collected, characterize the circularity in this cross section with maximum radial variation; By workbench, hydraulic cylinder piston rod is adjusted to some diverse locations along own axes again, because workpiece 11 is by after holder, workpiece 11 can only carry out moving and turn round around own axes these two along own axes direction and move, and the adjustment of axial location can drive workpiece to realize by the workbench of grinding machine.The like, sampled data and several cross sections circularity separately in several cross sections can be obtained, characterize the circularity of hydraulic cylinder piston rod with maximum circularity.Then, then obtained the center of circle in some cross sections by least square fitting, by a series of center of circle, adopt least square method to obtain a space line, serial distance of center circle is the linearity of hydraulic cylinder piston rod from two times of this space line ultimate range.The operation that the above-mentioned detected parameters according to displacement detecting sensor 9 calculates circularity and linearity performs by data analysis module.
Here detecting the location parameter of different cross section, is to obtain the relatively poor cross section of circularity to represent the circularity of workpiece 11, is also the linearity data in order to obtain workpiece 11 simultaneously.
The above-mentioned circularity that calculates and linearity data can be supplied to the digital control processing control system of grinding machine by parameter feedback module, thus according to testing result adjustment machined parameters, need to add man-hour, then drive gyroaxis 5 that pivoted lever is lifted by motor 7, circulate with this.Can complete processing by clamped one time like this, greatly increase processing and detection efficiency, and the raising of accuracy of detection also can improve the precision of part processing.
Above the circularity of a kind of external cylindrical surface grinding provided by the utility model and linearity testing apparatus are described in detail.Apply specific embodiment herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (7)
1. the circularity of an external cylindrical surface grinding and linearity testing apparatus, it is characterized in that, comprise: with base (1), the support (2) be arranged on described base (1), pivoted lever (8), displacement detecting sensor (9) and Signal Processing Element that the fuselage of grinding machine is fixing
One end of described pivoted lever (8) and described support (2) are formed away from one end of described base (1) and are rotationally connected, the other end of described pivoted lever (8) is provided with described displacement detecting sensor (9), and described displacement detecting sensor (9) can detect at the location parameter of detection position to the external cylindrical surface of workpiece (11);
Described Signal Processing Element can receive the location parameter that described displacement detecting sensor (9) detects, and is converted to circularity and the linearity data of described workpiece (11).
2. the circularity of external cylindrical surface grinding according to claim 1 and linearity testing apparatus, it is characterized in that, also comprise position regulator (10), described position regulator (10) is slidably arranged on described pivoted lever (8), described displacement detecting sensor (9) can be adjusted relative to the position on described pivoted lever (8) length direction, described displacement detecting sensor (9) is arranged on described position regulator (10) rotationally, can adjust the measurement attitude of described displacement detecting sensor (9).
3. the circularity of external cylindrical surface grinding according to claim 2 and linearity testing apparatus, it is characterized in that, also comprise gyroaxis (5), one end of described pivoted lever (8) is connected by described gyroaxis (5) with described support (2) one end away from described base (1), described pivoted lever (8) can be made to swing in perpendicular or horizontal plane, to make described displacement detecting sensor (9) swing to non-detection position man-hour adding, swing to when detecting and detect position.
4. the circularity of external cylindrical surface grinding according to claim 3 and linearity testing apparatus, it is characterized in that, also comprise driver part, described driver part is connected with described gyroaxis (5), and described gyroaxis (5) can be driven to rotate thus drive described pivoted lever (8) to rotate.
5. the circularity of external cylindrical surface grinding according to claim 1 and linearity testing apparatus, it is characterized in that, also comprise limiting component, described limiting component is arranged between described pivoted lever (8) and described support (2), described pivoted lever (8) extreme position in different rotation direction can be limited, to determine to detect position and non-detection position.
6. the circularity of external cylindrical surface grinding according to claim 5 and linearity testing apparatus, it is characterized in that, described limiting component comprises: limited block (5), clockwise limit switch (4) and counterclockwise limit switch (3), described limited block (5) is fixed on one end of described pivoted lever (8), described clockwise limit switch (4) and described counterclockwise limit switch (3) are fixed on described support (2), and described displacement detecting sensor (9) can be made to arrive non-detection position and detect position.
7. the circularity of external cylindrical surface grinding according to claim 1 and linearity testing apparatus, it is characterized in that, described Signal Processing Element comprises: data acquisition module, data analysis module and parameter feedback module,
Described data acquisition module can receive the location parameter that described displacement detecting sensor (9) detects;
The location parameter that described displacement detecting sensor (9) are detected can be scaled circularity and the linearity data of described workpiece (11) by described data analysis module;
The circularity of described workpiece (11) and linearity data feedback can be given the control system for processing of described grinding machine by described parameter feedback module, thus make described control system for processing according to feedback result adjustment machined parameters.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106272069A (en) * | 2015-06-11 | 2017-01-04 | 徐工集团工程机械股份有限公司 | The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method |
| CN106524982A (en) * | 2016-10-27 | 2017-03-22 | 陕西理工学院 | Coaxial line measuring device and measuring method thereof |
| CN110160462A (en) * | 2019-05-08 | 2019-08-23 | 北京理工大学 | A kind of detection method of large size deep-hole parts Boring Process circularity and straightness |
| CN110181333A (en) * | 2019-05-23 | 2019-08-30 | 苏州工业职业技术学院 | A kind of cubing of on-line checking part size |
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2015
- 2015-06-11 CN CN201520403244.4U patent/CN204800470U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106272069A (en) * | 2015-06-11 | 2017-01-04 | 徐工集团工程机械股份有限公司 | The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method |
| CN106524982A (en) * | 2016-10-27 | 2017-03-22 | 陕西理工学院 | Coaxial line measuring device and measuring method thereof |
| CN106524982B (en) * | 2016-10-27 | 2020-01-31 | 陕西理工学院 | coaxial line measuring device and measuring method thereof |
| CN110160462A (en) * | 2019-05-08 | 2019-08-23 | 北京理工大学 | A kind of detection method of large size deep-hole parts Boring Process circularity and straightness |
| CN110181333A (en) * | 2019-05-23 | 2019-08-30 | 苏州工业职业技术学院 | A kind of cubing of on-line checking part size |
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