CN106272069A - The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method - Google Patents

The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method Download PDF

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Publication number
CN106272069A
CN106272069A CN201510319154.1A CN201510319154A CN106272069A CN 106272069 A CN106272069 A CN 106272069A CN 201510319154 A CN201510319154 A CN 201510319154A CN 106272069 A CN106272069 A CN 106272069A
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China
Prior art keywords
circularity
displacement detecting
detecting sensor
workpiece
detection
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CN201510319154.1A
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Chinese (zh)
Inventor
陈新春
齐伟
蹤雪梅
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Construction Machinery Branch of XCMG
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Construction Machinery Branch of XCMG
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Priority to CN201510319154.1A priority Critical patent/CN106272069A/en
Publication of CN106272069A publication Critical patent/CN106272069A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/08Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving liquid or pneumatic means

Abstract

The present invention relates to circularity and linearity testing apparatus and the detection method of a kind of external cylindrical surface grinding, detection device includes: the base (1) fixing with the fuselage of grinding machine, the support (2) being arranged on base (1), pivoted lever (8), displacement detecting sensor (9) and Signal Processing Element, one end of pivoted lever (8) is rotationally connected away from one end formation of base (1) with support (2), the other end of pivoted lever (8) is provided with displacement detecting sensor (9), the location parameter of the external cylindrical surface of workpiece (11) can be detected by displacement detecting sensor (9) in detection position;Signal Processing Element is able to receive that the location parameter that displacement detecting sensor (9) detects, and is converted to circularity and the linearity data of workpiece (11).The detection device of this kind of embodiment circularity and the linearity of cylinder grinding to foreign round can realize detection automatically, and improves accuracy of detection, thus improves machining accuracy.

Description

The circularity of a kind of external cylindrical surface grinding and linearity testing apparatus and detection method
Technical field
The present invention relates to machining detection technique field, particularly relate to a kind of external cylindrical surface grinding Circularity and linearity testing apparatus and detection method.
Background technology
Along with the progress of industry, in grinding field, the face of cylinder, public to the morpheme of circle product external Margin is had higher requirement.In existing grinding process, typically workpiece is used special Detecting instrument carry out circularity and Linearity surveying, further 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 pass through On-machine Test, no It is the most necessary with the grinding cylinder face On-machine Test device repeatedly dismantled.
At present, prior art discloses a kind of external cylindrical surface grinding detection device, such as Fig. 1 institute Show, including expansion link 3a, transmission lever 1a, prolong motion block 6a, spring 8a, amesdial 2a and shell Body 7a, is wherein prolonged motion block 6a and is fixed on expansion link 3a by the second bolt 5a, expansion link 3a is fixed on housing 7a by the first bolt 4a, and spring 8a is positioned at transmission lever 1a, passes Passing bar 1a and be fixed on the lower section of housing 7a, 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, by bullet The compressing of spring 8a makes transmission lever 1a be close to workpiece, and workpiece mill is little when, transmission lever 1a is down Walking, then drive the gauge outfit contact of amesdial 2a, at this moment the pointer on amesdial 2a will be anti- Mirror concrete data.By this principle, can directly read this work in Grinding Process Part also remains how many grinding allowances, it is not necessary to workpiece is taken off measurement, solves and generally exists at present The problem being unable to reach on-line checking.
But, this detection device relies primarily on amesdial and detects, and accuracy of detection is the highest, and And can not realize automatically detecting and record, and grinding allowance can only be detected, should Narrower by scope.
Summary of the invention
The circularity that the purpose of the present invention is to propose to a kind of external cylindrical surface grinding fills with Linearity surveying Put and detection method, it is possible to the circularity of cylinder grinding to foreign round and linearity realize detection automatically, And improve accuracy of detection, thus improve machining accuracy.
For achieving the above object, one aspect of the present invention provides the circularity of a kind of external cylindrical surface grinding With linearity testing apparatus, including: the base 1 fixing with the fuselage of grinding machine, be arranged on described Support 2, pivoted lever 8, displacement detecting sensor 9 and Signal Processing Element on base 1,
One end of described pivoted lever 8 turns away from one end formation of described base 1 with described support 2 Being dynamically connected, the other end of described pivoted lever 8 is provided with described displacement detecting sensor 9, described The location parameter of the external cylindrical surface of workpiece 11 can be entered by displacement detecting sensor 9 in detection position Row detection;
Described Signal Processing Element is able to receive that the position ginseng that described displacement detecting sensor 9 detects Number, and be converted to circularity and the linearity data of described workpiece 11.
Further, also include that position regulator 10, described position regulator 10 set slidably Put on described pivoted lever 8, it is possible to adjust described displacement detecting sensor 9 relative to described time Position on bull stick 8 length direction, described displacement detecting sensor 9 is rotatably arranged at described On position regulator 10, it is possible to adjust the measurement attitude of described displacement detecting sensor 9.
Further, gyroaxis 5, one end of described pivoted lever 8 and described support 2 are also included One end away from described base 1 is connected by described gyroaxis 5, it is possible to make described pivoted lever 8 Swing in perpendicular or horizontal plane, so that described displacement detecting sensor 9 is adding man-hour Swing to non-detection position, swing to detect position when detection.
Further, also include that driver part, described driver part are connected with described gyroaxis 5, Described gyroaxis 5 can be driven to rotate thus drive described pivoted lever 8 to rotate.
Further, also include that limiting component, described limiting component are arranged on described pivoted lever 8 And between described support 2, it is possible to limit the described pivoted lever 8 limit in different rotation directions Position, to determine detection position and non-detection position.
Further, described limiting component includes: limited block 5, limit switch clockwise 4 and Limit switch 3 counterclockwise, described limited block 5 is fixed on one end of described pivoted lever 8, described Limit switch 4 and described limit switch counterclockwise 3 are fixed on described support 2 clockwise, energy Described displacement detecting sensor 9 is enough made to arrive non-detection position and detection position.
Further, described Signal Processing Element includes: data acquisition module, data analysis mould Block and parameter feedback module,
Described data acquisition module is able to receive that the position ginseng that described displacement detecting sensor 9 detects Number;
The location parameter that described displacement detecting sensor 9 can be detected by described data analysis module It is scaled circularity and the linearity data of described workpiece 11;
Described parameter feedback module can be by the circularity of described workpiece 11 and linearity data feedback To the control system for processing of described grinding machine, so that described control system for processing is according to feedback result Adjust machined parameters.
For achieving the above object, another aspect of the present invention provides the circle of a kind of external cylindrical surface grinding Degree and Linearity surveying method, detection device based on above-described embodiment, including:
Described displacement detecting sensor 9 is made to be positioned at detection position;
The position of the external cylindrical surface of described workpiece 11 is joined by described displacement detecting sensor 9 Number detects, and sends described Signal Processing Element to;
The location parameter described displacement detecting sensor 9 detected by described Signal Processing Element Be converted to circularity and the linearity data of described workpiece 11.
Further so that the described displacement detecting sensor 9 outside cylinder to described workpiece 11 The step that the location parameter in face carries out detecting specifically includes:
Described workpiece 11 is revolved one-turn so that described displacement detecting sensor 9 detects currently The radial position parameter of one week in cross section;
Described workpiece 11 is adjusted to some diverse locations along own axes, in position, everywhere Perform previous step.
Further, by described Signal Processing Element, described displacement detecting sensor 9 is detected The step of the location parameter circularity and linearity data that are converted to described workpiece 11 include:
Described workpiece 11 is calculated corresponding at each section by described Signal Processing Element Maximum radial position parameter variations, the circularity corresponding to characterize each cross section;
The circle that each cross section of described workpiece 11 is corresponding is calculated by described Signal Processing Element The maximum of degree, to characterize the circularity of described workpiece 11;
Obtain the center of circle in some cross sections according to least square fitting, by a series of centers of circle, adopt Obtaining a space line with least square fitting, a series of centers of circle are apart from described space line Two times of ultimate range are in order to characterize the linearity of described workpiece 11.
Further, described detection device also includes position regulator 10, described position regulator 10 are slidably arranged on described pivoted lever 8, and described displacement detecting sensor 9 is arranged rotationally On described position regulator 10, this detection method also includes:
Before processing, described displacement detecting sensor 9 is adjusted relative to described pivoted lever 8 length Position on direction;
Adjust the measurement attitude of described displacement detecting sensor 9, so that described displacement detecting sensing Device 9 is in detection position;
The position of the described workpiece 11 before the processing that described displacement detecting sensor 9 is detected Parameter, stores as detection initial position parameters.
Further, the limiting component of detection device includes: limited block 5, the most spacing open Pass 4 and limit switch counterclockwise 3, described limited block 5 is fixed on one end of described pivoted lever 8, Described limit switch clockwise 4 and described limit switch counterclockwise 3 are fixed on described support 2, Described detection method also includes:
Adding man-hour, described pivoted lever 8 is being turned to described limit switch clockwise 4 correspondence Non-detection position;
When measuring, described pivoted lever 8 is turned to described limit switch counterclockwise 3 correspondence Detection position.
Further, after the circularity obtaining described workpiece 11 and linearity data, also wrap Include: by the circularity of described workpiece 11 with linearity data feedback to the machining control system of described grinding machine System, so that described control system for processing adjusts machined parameters according to feedback result.
Based on technique scheme, the circularity of the external cylindrical surface grinding of the embodiment of the present invention and straight line Degree detection device, by displacement detecting sensor in the detection position to excircle of workpiece cylinder, the position Parameter detects, then by Signal Processing Element location parameter is converted to the circularity of workpiece with Linearity data, this detection device can be to the circularity of excircle of workpiece cylinder after grinding and linearity Realize automatic On-machine Test, thus improve detection efficiency;The most also can reduce artificial behaviour as far as possible Make the detection error introduced, and displacement detecting sensor also can reach higher resolution, this A little advantages can improve the accuracy of detection of this detection device, thus improves machining accuracy.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application A part, the schematic description and description of the present invention is used for explaining the present invention, not structure Become inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the detection device of external cylindrical surface grinding in prior art;
Fig. 2 is a circularity enforcement with linearity testing apparatus of external cylindrical surface grinding of the present invention The Facad structure schematic diagram of example;
Fig. 3 is the inverse layer structure schematic diagram of embodiment illustrated in fig. 2.
Description of reference numerals
1a-transmission lever;2a-amesdial;3a-expansion link;4a-the first bolt;5a- Two bolts;6a-prolongs motion block;7a-housing;8a-spring;
1-base;2-support;3-is counterclockwise limit switch;4-limit switch clockwise; 5-gyroaxis;6-limited block;7-motor;8-pivoted lever;9-displacement detecting sensor; 10-position regulator;11-workpiece.
Detailed description of the invention
The present invention described further below.In the following paragraphs, embodiment is defined in more detail Different aspect.The each side so limited can be with any other a aspect or many aspects Combination, not can be combined.Especially it is considered to be preferred or favourable appoints What feature can one or more with other be considered as preferred or favourable feature.
Inventors noted that external cylindrical surface grinding of the prior art detection device accuracy of detection is relatively Low, main reason is that, this detection device relies primarily on amesdial and detects, when workpiece turns Time dynamic, operator is needed to read some data by amesdial in one week, then to these data Compare or calculate, wherein chosen position, read data and compare calculating be all by manually Carry out, thus can introduce a lot of anthropic factors thus affect final accuracy of detection, and And detection efficiency is the lowest.It addition, this metering outfit of amesdial only up to reach The accuracy of detection of 0.001mm, the process equipment of precision this for grinding machine, if required up Higher grinding requirement, then can not be realized higher adding by the restriction of detection equipment precision Work precision.
The shortcoming existed for detection equipment of the prior art, the invention provides a kind of cylindrical The circularity of cylinder grinding and linearity testing apparatus, Facad structure schematic diagram as shown in Figure 2 and Inverse layer structure schematic diagram shown in Fig. 3, including: the base 1 fixing with the fuselage of grinding machine, peace Support 2, pivoted lever 8, displacement detecting sensor 9 and the Signal Processing Element being contained on base 1, One end of pivoted lever 8 is rotationally connected away from one end formation of base 1 with support 2, pivoted lever 8 The other end displacement detecting sensor 9 is installed, displacement detecting sensor 9 can be at detecting position The location parameter putting the external cylindrical surface to workpiece 11 detects;Signal Processing Element is able to receive that The location parameter of displacement detecting sensor 9 detection, and be converted to circularity and the linearity of workpiece 11 Data.Wherein, can be positioned by pin between base 1 and the fuselage of grinding machine, and adopt Being fixedly connected with bolt, support 2 is arranged on base 1, is used for supporting detection main part Point.
The detection device of the present invention is applicable to circularity and the linearity of all non-eccentricity external cylindrical surfaces On-machine Test.Compared with prior art, displacement detecting sensor can be in detection position to work Part carries out location parameter detection, then is converted to by the location parameter detected by Signal Processing Element The circularity of workpiece and linearity data, it is possible to achieve On-machine Test, be also not related to the secondary of workpiece Clamping, thus detection and the data process of automatization can be realized, it is possible to increase the detection effect of workpiece Rate.Additionally the present invention is compared with the scheme using amesdial detection, manual operation the mistake introduced Difference is less, and the minimum resolution of displacement detecting sensor is up to the 0.03% of detection length, The circular runout detecting a length of workpiece of workpiece in the present invention, maximum not over 0.05mm, The resolution understanding displacement detecting sensor is less than 0.000015mm, than the measurement of amesdial Precision is high.By analyzing, the circularity of the external cylindrical surface grinding of the present invention and linearity testing apparatus The accuracy of detection of workpiece can be improved, thus improve machining accuracy further.
Further, this detection device also includes position regulator 10, and position regulator 10 is sliding It is arranged on pivoted lever 8, it is possible to adjust displacement detecting sensor 9 relative to pivoted lever 8 dynamicly Position on length direction, displacement detecting sensor 9 is rotatably arranged at position regulator 10 On, it is possible to adjust the measurement attitude of displacement detecting sensor 9.
Specifically, pivoted lever 8 can be designed as the rod-like structure that cross section is rectangle, position adjustment The rectangular through slot that size is suitable with pivoted lever 8 is offered, by position regulator 10 on device 10 Be set on pivoted lever 8, can by position regulator 10 drive displacement detecting sensor 9 along The length direction of pivoted lever 8 is adjusted.Displacement detecting sensor 9 and position regulator 10 Can fix by the way of hinged, displacement detecting sensor 9 can be realized relative to pivoted lever 8 It is adjusted at angle direction.It addition, displacement detecting sensor 9 can also use other structure Realize position adjustment.
Mentioning in above-described embodiment, one end of pivoted lever 8 and support 2 are away from one end of base 1 Formation is rotationally connected, and the purpose of this design is: when needs carry out grinding, incite somebody to action back Bull stick 8 turns to non-detection position, and non-detection position is that the main body of detection device does not hinder emery wheel And the position of workpiece 11;When needs detect, turn to pivoted lever 8 detect position, The grinding carriage of grinding machine emery wheel to be driven is away from workpiece 11 simultaneously, and detecting position is set to displacement detecting sensing The position that workpiece 11 can be detected by device 9.This structure can realize Roundness of Workpiece with straight The On-machine Test of dimension so that non-interference between manufacturing procedure and detection operation, and adjust Get up the most convenient.
In a kind of specific embodiment, the detection device of the present invention also includes gyroaxis 5, returns One end of bull stick 8 is connected by gyroaxis 5 away from one end of base 1 with support 2, it is possible to make Pivoted lever 8 swings in perpendicular or horizontal plane, so that displacement detecting sensor 9 is adding Man-hour swings to non-detection position, swings to detect position when detection.When gyroaxis 5 level When arranging, pivoted lever 8 swings in perpendicular, sees 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 be with manual operation, it is also possible to realize by the way of driving automatically. Automatically the automaticity that can improve detection further is driven, and for performing batch detection During task, the position control to displacement detecting sensor 9 is more consistent.Specifically, this detection Device also includes that driver part, driver part are connected with gyroaxis 5, it is possible to be driven back to rotating shaft 5 Rotate thus drive pivoted lever 8 to rotate, driver part can choose motor, motor, oil cylinder and The elements such as pulley.
In one more excellent embodiment of the present invention, detection device also includes limiting component, spacing Parts are arranged between pivoted lever 8 and support 2, it is possible to limit pivoted lever 8 in difference rotation side Extreme position upwards, to determine detection position and non-detection position.
The structure example swung in perpendicular with pivoted lever 8, limiting component includes: spacing Block 5, limit switch clockwise 4 and limit switch 3 counterclockwise, limited block 5 is fixed on pivoted lever One end of 8, limit switch 4 clockwise and limit switch counterclockwise 3 be fixed on support 2, Displacement detecting sensor 9 can be made to arrive non-detection position and detection position.
Preferably, the state that pivoted lever 8 is vertical with base 1 is set as that pivoted lever 8 is clockwise Rotate extreme position time (i.e. lifting), state parallel with base 1 for pivoted lever 8 is set Rotate extreme position time (i.e. putting down) for pivoted lever 8 counterclockwise, arrange limit clockwise accordingly Bit switch 4 and the limit switch counterclockwise 3 particular location on support 2.Referred to herein as limit Bit switch can choose contact or contactless switch, as long as pivoted lever 8 can be limited Extreme position in different rotation directions, it is of course also possible to use mechanical limit structure.
In the above-described embodiment, displacement detecting sensor 9 can use connect non-with workpiece 11 The mode touched detects, such as, and laser beam that displacement detecting sensor 9 sends or ultrasonic The centrage of ripple passes axis of workpiece, utilizes surface of the work to reflect, and then obtains outside workpiece The location parameter of certain point on the face of cylinder.Displacement detecting sensor 9 obtains location parameter can be for Signal Processing Element carries out data process, thus obtains the circularity of the external cylindrical surface of workpiece 11 with straight Dimension data.
In one embodiment, Signal Processing Element includes: data acquisition module, data analysis Module and parameter feedback module, data acquisition module is able to receive that displacement detecting sensor 9 detects Location parameter;The location parameter that displacement detecting sensor 9 can be detected by data analysis module It is scaled circularity and the linearity data of workpiece 11;Parameter feedback module can be by workpiece 11 Circularity and linearity data feedback are to the control system for processing of grinding machine, so that control system for processing Machined parameters is adjusted according to feedback result.
Wherein, displacement detecting sensor 9 and Signal Processing Element coordinate the circle obtaining workpiece 11 Spending the method with linearity data is: revolved one-turn by workpiece 11 so that displacement detecting sensor The radial position parameter of one week in 9 detection current cross-section, by data collecting module collected the most also Preserve the sampled data of a week, characterize the circularity in this cross section with maximum radial variation;Again by workpiece 11 are adjusted to some diverse locations along own axes, the like, it is possible to obtain several cross sections The respective circularity of sampled data and several cross sections, characterize the circle of workpiece 11 with maximum circularity Degree.Then obtained the center of circle in some cross sections by least square fitting, by a series of then, The center of circle, uses method of least square to obtain a space line, and the series center of circle is apart from this space line Two times of ultimate range are the linearity of workpiece 11.
Displacement detecting sensor 9 and Signal Processing Element with the use of, it is possible to achieve automatization On-machine Test, reduces the detection error introduced because of manual operation, and can improve detection efficiency. In the case of performing batch detection task, also can preferably ensure the concordance of testing conditions. It addition, testing result can also be fed back to digital control processing control system, numerical control by parameter feedback module Control system for processing adjusts machined parameters by feedback result, thus has only to workpiece is carried out one Secondary clamping just can complete processing, it is not necessary to repeatedly dismantles, and so can realize detection and processing is adopted With identical positioning datum, thus improve accuracy of detection, and then improve machining accuracy.
Detection device based on above-described embodiment, present invention also offers a kind of external cylindrical surface grinding Circularity and Linearity surveying method, including:
Step 101, make displacement detecting sensor 9 be positioned at detection position;
Step 102, the position of the external cylindrical surface of workpiece 11 is joined by displacement detecting sensor 9 Number detects, and sends Signal Processing Element to;
Step 103, position ginseng displacement detecting sensor 9 detected by Signal Processing Element Number conversion is circularity and the linearity data of workpiece 11.
In a upper embodiment, step 102 make displacement detecting sensor 9 to workpiece 11 The location parameter of external cylindrical surface carry out detection and specifically include:
Step 201, workpiece 11 is revolved one-turn so that displacement detecting sensor 9 detects currently The radial position parameter of one week in cross section, is so obtained with a cross section inner circle of workpiece 11 The location parameter of each point on week;
Step 202, workpiece 11 is adjusted to some diverse locations along own axes, in everywhere Position performs step 201.
Owing to workpiece 11 is by after holder, workpiece 11 can only be carried out along own axes direction Move and around own axes revolution the two motion, the adjustment of axial location can be by grinding machine Workbench drives workpiece to realize.The location parameter of different cross section is detected, is to enable Enough obtain the relatively poor cross section of circularity and represent the circularity of workpiece 11, and for obtain The linearity data of workpiece 11.The position ginseng that displacement detecting sensor 9 detected is explained below Number is scaled the concrete grammar of external cylindrical surface circularity and linearity data.
Specifically, displacement detecting sensor 9 is detected by step 103 by Signal Processing Element Location parameter be converted to the circularity of workpiece 11 and specifically include with linearity data:
Step 301, calculated workpiece 11 by Signal Processing Element corresponding at each section Maximum radial position parameter variations, the circularity corresponding to characterize each cross section;
Step 302, calculated the circle that each cross section of workpiece 11 is corresponding by Signal Processing Element The maximum of degree, to characterize the circularity of workpiece 11;
Step 303, according to least square fitting obtain some cross sections the center of circle, by one be The row center of circle, uses least square fitting to obtain a space line, and a series of centers of circle distance is empty Between two times of straight line ultimate range in order to characterize the linearity of workpiece 11.
In the embodiment that Fig. 2 with Fig. 3 is corresponding, detection device also includes position regulator 10, Position regulator 10 is slidably arranged on pivoted lever 8, and displacement detecting sensor 9 sets rotationally Putting on position regulator 10, this detection method also includes:
Step 100a, before processing, adjusts displacement detecting sensor 9 relative to pivoted lever 8 Position on length direction;
Step 100b, the measurement attitude of adjustment displacement detecting sensor 9, so that displacement detecting Sensor 9 is in detection position;
The position of the workpiece 11 before step 100c, the processing that displacement detecting sensor 9 is detected Put parameter, store as detection initial position parameters.
By step 100a in this embodiment~100c, can be before processing by displacement detecting Sensor 9 is adjusted to the position at workpiece 11 place, and using this position as initial position parameters It is saved in Signal Processing Element, in order to need workpiece 11 is carried out after grinding completes During detection, directly workpiece 11 is adjusted according to the initial position parameters preserved in Signal Processing Element Put in place, need not again adjust the displacement detecting sensor 9 position relative to workpiece 11.This Detection preparation is placed on execution before processing part by kind of embodiment, can shorten the detection time from And improve processing and detection efficiency.
Further, in detection device uses the embodiment of limiting component, limiting component includes: Limited block 5, limit switch clockwise 4 and limit switch 3 counterclockwise, limited block 5 is fixed on back One end of bull stick 8, limit switch 4 clockwise and limit switch counterclockwise 3 are fixed on support 2 On, the detection method of the present invention also includes:
Adding man-hour, pivoted lever 8 is being turned to the non-detecting position of limit switch 4 correspondence clockwise Put;
When measuring, pivoted lever 8 is turned to the detection position of limit switch 3 correspondence counterclockwise.
For the set-up procedure before processing, provide the illustration of several different situations here.Its One, detection device is provided with limit assembly, before processing, makes pivoted lever 8 swing to inverse time stylus After extreme position, it is not necessary to by position regulator 10 adjust displacement detecting sensor 9 position and Measure attitude, the most just arrive detection position, the most just can obtain detection initial position parameters. Its two, detection device is provided with limit assembly, but it is inverse before processing, pivoted lever 8 to be swung to After hour hands extreme position, still need to be adjusted the position of displacement detecting sensor 9 by position regulator 10 Put and measure attitude.Its three, detection device in be not provided with limit assembly, need by servo electricity Machines etc. control pivoted lever 8 with the driver part that position is fed back and swing to correct position, then pass through Position regulator 10 adjusts the position of displacement detecting sensor 9 and measures attitude.
In yet another embodiment of the present invention, obtaining circularity and the straight line number of degrees of workpiece 11 According to afterwards, this detection method also includes: give mill by the circularity of workpiece 11 with linearity data feedback The control system for processing of bed, so that control system for processing adjusts machined parameters according to feedback result. In this embodiment, testing result directly can provide for the course of processing and instruct, by once filling Folder can complete processing, greatly increases processing and detection efficiency, and the carrying of accuracy of detection The high qualification rate that also can improve part processing.
Each step introduced in the above embodiment of the present invention can be according to actually detected need Ask and select, it is also possible to the order between each step is adjusted, these embodiments Combination is all at the row of protection scope of the present invention.
Apparent understanding is had, below with certain in order to the present invention being detected device and detection method As a example by the grinding of hydraulic cylinder piston rod, to using detection device pair corresponding for Fig. 2 with Fig. 3 The method that piston rod carries out detecting is described in detail.
Before processing, the pivoted lever 8 of detection device is lowered into limit switch 3 counterclockwise corresponding Position, and according to the size of hydraulic cylinder piston rod (i.e. workpiece 11), adjust displacement detecting and pass Sensor 9 is along the position of pivoted lever 8 length direction and measures attitude, thus arrives suitably detection Position, and this detection position is saved in Signal Processing Element as initial position parameters.
When grinding, pivoted lever 8 is raised up to the position of limit switch 4 correspondence clockwise, Detection device does not interferes with normal grinding.
After grinding terminates, when needing to detect, emery wheel is driven to return (i.e. the grinding carriage of grinding machine Away from workpiece), motor 7 is driven back to rotating shaft 5 makes pivoted lever 8 right from limit switch 4 clockwise The position answered turns to the position of limit switch 3 correspondence counterclockwise, when limited block 6 arrives the inverse time During the position of pin limit switch 3 correspondence, motor 7 stops operating.Then, by the work of grinding machine Hydraulic cylinder piston rod is adjusted and is adjusted in place according to initial position parameters by station, at this moment displacement detecting Sensor 9 the most just reaches measurement position.The position adjustment the two step of pivoted lever 8 and workpiece Suddenly can mutual reversed order.
Then, hydraulic cylinder piston rod is revolved one-turn so that displacement detecting sensor 9 detection is worked as The radial position parameter of one week in starting section, simultaneously by data collecting module collected and preserve one week Sampled data, with maximum radial variation characterize this cross section circularity;Again by workbench by liquid Pressure cylinder piston bar is adjusted to some diverse locations along own axes, the like, it is possible to obtain if The respective circularity of sampled data and several cross sections in dry cross section, characterizes hydraulic pressure with maximum circularity The circularity of cylinder piston rod.Then, then obtained the center of circle in some cross sections by least square fitting, By a series of centers of circle, method of least square is used to obtain a space line, series center of circle distance Two times of this space line ultimate range are the linearity of hydraulic cylinder piston rod.Above-mentioned basis The detection parameter of displacement detecting sensor 9 calculates the operation of circularity and linearity by data analysis Module performs.
Above-mentioned calculated circularity and linearity data can be supplied to mill by parameter feedback module The digital control processing control system of bed, thus adjust machined parameters according to testing result, need processing Time, then be driven back to rotating shaft 5 by motor 7 pivoted lever is lifted, circulate with this.So logical Cross clamped one time and can complete processing, greatly increase processing and detection efficiency, and detect The raising of precision also can improve the precision of part processing.
Circularity and Linearity surveying to a kind of external cylindrical surface grinding provided by the present invention above Device and detection method are described in detail.Specific embodiment used herein is to this Bright principle and embodiment are set forth, and the explanation of above example is only intended to help reason Solve method and the core concept thereof of the present invention.It should be pointed out that, the common skill for the art For art personnel, under the premise without departing from the principles of the invention, it is also possible to if the present invention is carried out Dry improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.

Claims (13)

1. the circularity of an external cylindrical surface grinding and linearity testing apparatus, it is characterised in that Including: the base (1) fixing with the fuselage of grinding machine, be arranged on described base (1) Frame (2), pivoted lever (8), displacement detecting sensor (9) and Signal Processing Element,
One end of described pivoted lever (8) and described support (2) are away from described base (1) One end is formed and is rotationally connected, and the other end of described pivoted lever (8) is provided with described displacement detecting and passes Sensor (9), described displacement detecting sensor (9) can be in detection position to workpiece (11) The location parameter of external cylindrical surface detect;
Described Signal Processing Element is able to receive that the position that described displacement detecting sensor (9) detects Put parameter, and be converted to circularity and the linearity data of described workpiece (11).
The circularity of external cylindrical surface grinding the most according to claim 1 fills with Linearity surveying Put, it is characterised in that also include position regulator (10), described position regulator (10) It is slidably arranged on described pivoted lever (8), it is possible to adjust described displacement detecting sensor (9) Relative to the position on described pivoted lever (8) length direction, described displacement detecting sensor (9) It is rotatably arranged on described position regulator (10), it is possible to adjust described displacement detecting sensing The measurement attitude of device (9).
The circularity of external cylindrical surface grinding the most according to claim 2 fills with Linearity surveying Put, it is characterised in that also include gyroaxis (5), one end of described pivoted lever (8) and institute State support (2) one end away from described base (1) by described gyroaxis (5) connection, energy Described pivoted lever (8) is enough made to swing in perpendicular or horizontal plane, so that described displacement inspection Survey sensor (9) and swing to non-detection position man-hour adding, swing to detect position when detection.
The circularity of external cylindrical surface grinding the most according to claim 3 fills with Linearity surveying Put, it is characterised in that also include driver part, described driver part and described gyroaxis (5) Connect, it is possible to drive described gyroaxis (5) to rotate thus drive described pivoted lever (8) to rotate.
The circularity of external cylindrical surface grinding the most according to claim 1 fills with Linearity surveying Put, it is characterised in that also include that limiting component, described limiting component are arranged on described pivoted lever (8) and between described support (2), it is possible to limit described pivoted lever (8) in difference rotation side Extreme position upwards, to determine detection position and non-detection position.
The circularity of external cylindrical surface grinding the most according to claim 5 fills with Linearity surveying Put, it is characterised in that described limiting component includes: limited block (5), limit switch clockwise (4) and limit switch counterclockwise (3), described limited block (5) is fixed on described pivoted lever (8) One end, described limit switch clockwise (4) and described limit switch counterclockwise (3) are fixed On described support (2), it is possible to make described displacement detecting sensor (9) arrive non-detecting position Put and detect position.
The circularity of external cylindrical surface grinding the most according to claim 1 fills with Linearity surveying Put, it is characterised in that described Signal Processing Element includes: data acquisition module, data analysis Module and parameter feedback module,
Described data acquisition module is able to receive that the position that described displacement detecting sensor (9) detects Put parameter;
The position that described displacement detecting sensor (9) can be detected by described data analysis module Parameter conversion is circularity and the linearity data of described workpiece (11);
Described parameter feedback module can be by anti-with linearity data for the circularity of described workpiece (11) Feed the control system for processing of described grinding machine, so that described control system for processing is according to feedback knot Fruit adjusts machined parameters.
8. the circularity of external cylindrical surface grinding and a Linearity surveying method, based on claim 1~7 arbitrary described detection devices, it is characterised in that including:
Described displacement detecting sensor (9) is made to be positioned at detection position;
Make described displacement detecting sensor (9) to the external cylindrical surface of described workpiece (11) Location parameter detects, and sends described Signal Processing Element to;
The position described displacement detecting sensor (9) detected by described Signal Processing Element Parameters Transformation is circularity and the linearity data of described workpiece (11).
The circularity of external cylindrical surface grinding the most according to claim 8 and Linearity surveying side Method, it is characterised in that make described displacement detecting sensor (9) to described workpiece (11) The step that the location parameter of external cylindrical surface carries out detecting specifically includes:
Described workpiece (11) is revolved one-turn so that described displacement detecting sensor (9) is examined The radial position parameter of one week in survey current cross-section;
Described workpiece (11) is adjusted to some diverse locations along own axes, in position, everywhere Put execution previous step.
The circularity of external cylindrical surface grinding the most according to claim 9 and Linearity surveying side Method, it is characterised in that by described Signal Processing Element by described displacement detecting sensor (9) The location parameter of detection is converted to the circularity of described workpiece (11) and the step bag of linearity data Include:
Described workpiece (11) is calculated corresponding at each section by described Signal Processing Element Maximum radial position parameter variations, the circularity corresponding to characterize each cross section;
The each cross section being calculated described workpiece (11) by described Signal Processing Element is corresponding The maximum of circularity, to characterize the circularity of described workpiece (11);
Obtain the center of circle in some cross sections according to least square fitting, by a series of centers of circle, adopt Obtaining a space line with least square fitting, a series of centers of circle are apart from described space line Two times of ultimate range are in order to characterize the linearity of described workpiece (11).
The circularity of 11. external cylindrical surface grindings according to claim 8 and Linearity surveying side Method, it is characterised in that described detection device also includes position regulator (10), described position Adjustor (10) is slidably arranged on described pivoted lever (8), described displacement detecting sensor (9) being rotatably arranged on described position regulator (10), this detection method also includes:
Before processing, described displacement detecting sensor (9) is adjusted relative to described pivoted lever (8) Position on length direction;
Adjust the measurement attitude of described displacement detecting sensor (9), so that described displacement detecting Sensor (9) is in detection position;
Described workpiece (11) before the processing that described displacement detecting sensor (9) is detected Location parameter, as detection initial position parameters store.
The circularity of 12. external cylindrical surface grindings according to claim 8 and Linearity surveying side Method, it is characterised in that the limiting component of detection device includes: limited block (5), limit clockwise Bit switch (4) and limit switch counterclockwise (3), described limited block (5) is fixed on described returning One end of bull stick (8), described limit switch clockwise (4) and described limit switch counterclockwise (3) being fixed on described support (2), described detection method also includes:
Adding man-hour, described pivoted lever (8) is being turned to described limit switch clockwise (4) Corresponding non-detection position;
When measuring, described pivoted lever (8) is turned to described limit switch counterclockwise (3) Corresponding detection position.
The circularity of 13. external cylindrical surface grindings according to claim 10 and Linearity surveying Method, it is characterised in that after the circularity obtaining described workpiece (11) and linearity data, Also include: by the circularity of described workpiece (11) and linearity data feedback adding to described grinding machine Work control system, so that described control system for processing adjusts machined parameters according to feedback result.
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CN108332688A (en) * 2018-01-31 2018-07-27 闽台龙玛直线科技股份有限公司 A kind of ball line slideway auxiliary raceway straightness On-line Measuring Method
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CN114986271A (en) * 2022-06-29 2022-09-02 中国航发动力股份有限公司 Eccentric structure body grinding positioning tool and process thereof
CN114986271B (en) * 2022-06-29 2023-09-26 中国航发动力股份有限公司 Eccentric structure grinding positioning tool and process thereof

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