CN102001025B - Processing precision property online measurement device and method for super-heavy lathe - Google Patents

Processing precision property online measurement device and method for super-heavy lathe Download PDF

Info

Publication number
CN102001025B
CN102001025B CN 201010516913 CN201010516913A CN102001025B CN 102001025 B CN102001025 B CN 102001025B CN 201010516913 CN201010516913 CN 201010516913 CN 201010516913 A CN201010516913 A CN 201010516913A CN 102001025 B CN102001025 B CN 102001025B
Authority
CN
China
Prior art keywords
measurement
fixed
lathe
superduty
light
Prior art date
Application number
CN 201010516913
Other languages
Chinese (zh)
Other versions
CN102001025A (en
Inventor
张维光
赵宏
姜涛
Original Assignee
西安交通大学
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 西安交通大学 filed Critical 西安交通大学
Priority to CN 201010516913 priority Critical patent/CN102001025B/en
Publication of CN102001025A publication Critical patent/CN102001025A/en
Application granted granted Critical
Publication of CN102001025B publication Critical patent/CN102001025B/en

Links

Abstract

The invention discloses a processing precision property online measurement device and a processing precision property online measurement method for a super-heavy lathe. Laser spot images are acquired by using a high-speed linear array image sensor, clear spot images are acquired from a group of acquired spot image sequence by using image recovery technology, sub-pixel central points of the spot images are identified by using correlation of pixel gray between the image sequences, and position information on the surface of a rotary workpiece can be effectively acquired by trigonometric imaging path calculation so that the technical defect that the conventional optical measurement method and the conventional optical measurement device cannot effectively acquire the position information on the surface of the rotary workpiece is overcome. Based on the acquired position information on the surface of the rotary workpiece, the developed measurement device is arranged on the heavy lathe; and after finishing a debugging calibration process, the measurement device can realize online on-site measurement of the processing dimension of the rotary workpiece on the heavy lathe, and meanwhile, the measurement system also has the function of positioning the processed workpiece.

Description

A kind of superduty lathe machining accuracy characteristic on-machine measurement device and method

Technical field

The invention belongs to superduty machine tool capability detection technique field, relate to the method that detects online the rotating object surface topography with light as the sensing means, particularly a kind of method and system for the assessment of superduty lathe machining accuracy on-machine measurement.

Background technology

In Aero-Space, large-scale mining machinery, Large Hydropower Station, in the process of the ultra-large workpieces such as nuclear power plant equipment, the superduty lathe is one of its main process equipment.Though domestic superduty lathe is in developing stage at present, the report of existing shaped article outlet.In superduty lathe research and development and use procedure, be a quality control difficult problem to the measurement of ultra-large workpiece processing dimension.This is that if the workpiece take 10 rev/mins of diameters of the speed of mainshaft as 5000mm, the cutting linear velocity of lathe is greater than 100m/min because in the large-scale workpiece process, workpiece is in rotation status.Because the processing work size is large, machining is the process of a long-time continuous processing in addition, and the wearing and tearing of process tool are very important for processing quality control.The online size that detects processing work not only is conducive to the processing quality control of ultra-large workpiece, and is conducive to detect the assembly such as machine tool in the variation of machine tool processing workpiece process performance, provides foundation for improving Machine Tool design.For the dimensional measurement of rotational workpieces, contact measurement method is inapplicable.And in the existing contactless workpiece processing dimension measuring method, measuring method is a kind of effective method.Existing measuring method and equipment owing to can not obtain active data, are not suitable for the on-line measurement of superduty machine tool processing workpiece under machine tool high speed line cutting speed.

Summary of the invention

Defective or deficiency for the online demand that detects of superduty lathe processing work and prior art creation, the object of the present invention is to provide a kind of superduty lathe machining accuracy characteristic on-machine measurement apparatus and method that can be used for, the method is reliable for the rotational workpieces image data, can be used for the front location of workpiece processing, the on-line measurement of process, after the processing at machine testing.

In order to realize above-mentioned task, the present invention takes following technical solution:

A kind of superduty lathe machining accuracy characteristic on-machine measurement device comprises light-source system, light spot image acquisition system and data handling system; Described light-source system includes LASER Light Source, convergent lens, collimation lens and collimation lens are arranged on the light path of LASER Light Source successively, they all are installed in the drum type housing, the drum type housing is fixed on fore-stock and the after-poppet, fore-stock and after-poppet are fixed on the holder housing by front left screw, front right screw, rear left screw and rear right screw, between fore-stock housing and after-poppet and the housing spring supporting is arranged, LASER Light Source sends outgoing beam and enter the light spot image acquisition system by folded light beam behind the large-scale workpiece surface reflection;

The light spot image acquisition system comprises optical filter, imaging len, is fixed into as lens holder, is fixed into rotating shaft mechanism and line array CCD as lens holder, optical filter is installed on the imaging len, imaging len is installed in and is fixed on the picture lens holder, and anchor clamps are fixed on the rotating mechanism 15;

Data handling system comprises data acquisition and treatment circuit and interface, interface and interface, and interface is connection data sampling and processing circuit and LASER Light Source respectively, the collection of interface connection data and control circuit and line array CCD, joint connecting device and computer.

A kind of method of using such as above-mentioned device, the method comprises the steps:

Step 1, with above-mentioned measurement mechanism by fixed support be fixed on one vertically the motion guide rail on;

Step 2, the guide rail of step 1 is fixed on the base of tool of heavy-duty engine lathe, make the direction of motion of guide rail be in vertical direction and with the tool sharpening direction of advance vertical;

Step 3, the pitching of adjustment measurement mechanism on fixed support make the plane of measurement mechanism outgoing beam and folded light beam formation and the linear velocity perpendicular direction of surface of the work motion;

Step 4, to be clamped in the column type workpiece that machines on the heavy machine tool as measuring object, measurement mechanism is moved up and down along guide rail, seek the position of the minimum of a value of the data that measurement mechanism measures, this position is exactly to measure the position that heavy machine tool main shaft rotation centerline is passed through on irradiating light beam and the formed plane of folded light beam.Measurement mechanism is fixed on this position;

Step 5, take the geometric parameter of processing work as measuring object, by machine tool seat feed system, calibrate the measurement mechanism datum mark with respect to the guide rail of lathe, supporting plate and the base of tool, the relative position coordinates of the cylindrical-coordinate system that main shaft consists of is finished the demarcation of measurement mechanism on lathe;

Step 6, when measurement mechanism on lathe during online on-position measure, at first the measured value solution is counted as the value with respect to the measurement mechanism measuring basis, the rear measurement mechanism benchmark of demarcating according to measuring system is with respect to the position coordinates of lathe cylindrical-coordinate system, and the measured value solution is counted as coordinate figure with respect to the lathe cylindrical-coordinate system.

The present invention uses the high speed linear array imageing sensor and gathers representation of laser facula, by one group of light spot image sequence application image recovery technology obtaining is obtained the hot spot picture rich in detail, the correlation of pixel grey scale identifies the sub-pix central point of light spot image between the application image sequence again, resolve by the trigonometry imaging optical path, can effectively obtain the positional information on rotational workpieces surface, thereby overcome existing measuring method and installed the technological deficiency that effectively to obtain the rotating machined workpiece surface position information.

The present invention is take the rotational workpieces surface position information obtained as the basis, the measurement mechanism of developing is installed on the heavy-duty engine lathe, after finishing the debugging calibration process, can realize the online on-position measure of heavy-duty engine lathe rotational workpieces processing dimension, this measuring system also has the positioning function to processing work simultaneously.

Description of drawings

Fig. 1 is the superduty lathe machining accuracy characteristic on-machine measurement device schematic diagram based on optical sensing methods.

Number in the figure: 1, LASER Light Source, 2, convergent lens, 3, collimation lens 1,4, collimation lens 2,5, the drum type housing of light source part is installed, 6, support 1,7, support 2,8, spring screw device 1,9, spring screw device 2,10, spring screw device 3,11, spring screw device 4,12, optical filter, 13, imaging len, 14, the fixing anchor clamps of imaging len, 15, be fixed into the rotating shaft mechanism of picture lens holder, 16, line array CCD, 17, data acquisition and treatment circuit, 18, holder housing, 19, interface 1,20, interface 2,21, interface 3,22, outgoing beam, 23, folded light beam, 24, the large-scale workpiece surface.

Fig. 2 is the method schematic diagram of superduty lathe machining accuracy characteristic on-machine measurement.

Label wherein represents respectively: 25, processed large-scale workpiece, 26, heavy-duty engine lathe guide rail platform, 27, the tool feeding case, 28, toolframe, 29, cutter, 30, guide rail, 31, fixed support, 32, measurement mechanism of the present invention, 33, optical path

The specific embodiment

Referring to Fig. 1, the laser beam that semiconductor laser is sent based on the superduty lathe machining accuracy characteristic on-machine measurement device of optical sensing methods that the present invention relates to is behind convergent lens, obtain in the poly-lens front surface 100~500mm scope of namely defection of measurement category through collimation lens set again, each length is in laser beam waist 25mm scope, and lasing beam diameter is less than 40um.Laser beam is removed by optical filter through the surface of the work reflection and is disturbed the light wave composition, by the imaging len imaging.Optical filter transmitted light wave frequency range is consistent with the frequency of light wave scope of the semiconductor laser that adopts.Laser facula is used the high speed linear array imageing sensor and is received.Can obtain one group of light spot image sequence by the high speed linear array imageing sensor, the application image recovery technology obtains the hot spot picture rich in detail, and the correlation of pixel grey scale identifies the sub-pix central point of light spot image between the application image sequence again.By demarcating and calculate the geometrical relationship between irradiating light beam and the folded light beam, can obtain the corresponding relation of surface of the work locus and line scan image sensor location of pixels.In measuring process, put line scan image sensor is upper according to laser facula, can calculate surface of the work for the change in location of reference-calibrating.

To use above-mentioned superduty lathe machining accuracy characteristic on-machine measurement device is fixed on the machine tool seat, obtain device with respect to guide rail by demarcating to adjust, the base of tool, the reference coordinate of main shaft cylindrical-coordinate system, again the positional information of the surface of the work of measurement device is resolved in the cylindrical-coordinate system, realized workpiece processing prelocalization, the online detection in the process, the tool wear at machine testing and in to process of workpiece after the processing, the detection of the factors such as vibration.

The present invention can by adjusting collimation lens 3 and collimation lens 4 adjustment laser beam waist positions, can adjust pitching and the height of drum type housing 5 by adjusting front left screw 8, front right screw 9, rear left screw 10 and rear right screw 11.Stationary fixture 14 by rotation installation imaging len 13 is adjusted to as the angle between lens axis and the line scan image sensor simultaneously, make imaging system satisfy the Scheimpflug condition, change simultaneously the measuring basis position of optical sensing methods, to adapt to the requirement without measurement category.

Referring to Fig. 2, the installing component of superduty lathe machining accuracy characteristic on-machine measurement device 32 on heavy machine tool of the present invention's research and development comprises guide rail 30 and fixed support 31.Measurement mechanism 32 is fixed on the fixed support 31, and fixed support 31 is fixed on the slide block of guide rail 30, can drive measurement mechanism 32 and move in the vertical direction.When measurement mechanism 32 is installed, make the plane of measurement mechanism 32 outgoing beams and folded light beam formation and the linear velocity perpendicular direction of surface of the work motion by adjustment.

At measurement mechanism 32 after installation on the heavy-duty engine lathe, by moving up and down along guide rail 30, seek the position of the minimum of a value of the data that measurement mechanism 32 measures, this position is exactly to measure the position that irradiating light beam and plane that folded light beam forms overlap with heavy machine tool main shaft rotation centerline.

By above-mentioned installation and adjustment process, measurement mechanism is in conjunction with machine tool guideway, supporting plate and the base of tool, and the cylindrical-coordinate system that main shaft consists of forms a system of in the machine tooling scope surface of the work position being measured.This measuring system by with data solver that measurement mechanism is surveyed under the cylindrical-coordinate system of lathe itself, realize the location of workpiece and the online on-position measure of processing geometric parameter.

Claims (2)

1. a superduty lathe machining accuracy characteristic on-machine measurement device comprises light-source system, light spot image acquisition system and data handling system; It is characterized in that, described light-source system includes LASER Light Source (1), convergent lens (2) is arranged on the light path of LASER Light Source (1) successively, collimation lens (3) and the second collimation lens (4), they all are installed in the drum type housing (5), drum type housing (5) is fixed on fore-stock (6) and the after-poppet (7), fore-stock (6) and after-poppet (7) are fixed on the holder housing (18), fore-stock (6) has spring supporting between holder housing (18) and after-poppet (7) and holder housing (18), LASER Light Source (1) sends outgoing beam (22) and enter the light spot image acquisition system by folded light beam (23) after the reflection of large-scale workpiece surface (24);
The light spot image acquisition system comprises optical filter (12), imaging len (13), is fixed into picture lens holder (14), is fixed into rotating shaft mechanism (15) and line array CCD (16) as lens holder, optical filter (12) is installed on the imaging len (13), imaging len (13) is installed in and is fixed on the picture lens holder (14), and the described picture lens holder (14) that is fixed into is fixed on the described rotating shaft mechanism (15);
Data handling system comprises data acquisition and treatment circuit (17) and first interface (19), the second interface (20) and the 3rd interface (21), the second interface (20) is connection data sampling and processing circuit (17) and LASER Light Source (1) respectively, the 3rd interface (21) connection data sampling and processing circuit and line array CCD, first interface (19) jockey and computer.
2. a method of using device as claimed in claim 1 is characterized in that, the method comprises the steps:
Step 1, with above-mentioned measurement mechanism by fixed support be fixed on one vertically the motion guide rail on;
Step 2, the guide rail of step 1 is fixed on the base of tool of superduty lathe, makes the direction of motion of guide rail be in vertical direction and vertical with the tool sharpening direction of advance;
Step 3, the pitching of adjustment measurement mechanism on fixed support make the plane of measurement mechanism outgoing beam and folded light beam formation and the linear velocity perpendicular direction of surface of the work motion;
Step 4, to be clamped in the column type workpiece that machines on the superduty lathe as measuring object, measurement mechanism is moved up and down along guide rail, the position of the minimum of a value of the data that the searching measurement mechanism is measured, this position is exactly to measure irradiating light beam and the formed plane of folded light beam by the position of superduty lathe spindle rotation centerline, and measurement mechanism is fixed on this position;
Step 5, take the geometric parameter of processing work as measuring object, by superduty lathe tools seat feed system, calibrate the measurement mechanism datum mark with respect to the guide rail of superduty lathe, supporting plate and the base of tool, the relative position coordinates of the cylindrical-coordinate system that main shaft consists of is finished the demarcation of measurement mechanism on the superduty lathe;
Step 6, when measurement mechanism on the superduty lathe during online on-position measure, at first the measured value solution is counted as the value with respect to the measurement mechanism measuring basis, the rear measurement mechanism benchmark of demarcating according to measuring system is with respect to the position coordinates of superduty lathe cylindrical-coordinate system, and the measured value solution is counted as coordinate figure with respect to superduty lathe cylindrical-coordinate system.
CN 201010516913 2010-10-22 2010-10-22 Processing precision property online measurement device and method for super-heavy lathe CN102001025B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010516913 CN102001025B (en) 2010-10-22 2010-10-22 Processing precision property online measurement device and method for super-heavy lathe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010516913 CN102001025B (en) 2010-10-22 2010-10-22 Processing precision property online measurement device and method for super-heavy lathe

Publications (2)

Publication Number Publication Date
CN102001025A CN102001025A (en) 2011-04-06
CN102001025B true CN102001025B (en) 2013-02-06

Family

ID=43808865

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010516913 CN102001025B (en) 2010-10-22 2010-10-22 Processing precision property online measurement device and method for super-heavy lathe

Country Status (1)

Country Link
CN (1) CN102001025B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102814512B (en) * 2012-08-24 2014-07-16 沈阳黎明航空发动机(集团)有限责任公司 On-line measuring method for radials profile of compressor disc-like part of engine
TWI490077B (en) * 2012-11-30 2015-07-01 Ind Tech Res Inst Calibration apparatus and a compensation controlling method for multi-axes machines using the same
CN104772656B (en) * 2015-04-02 2017-04-26 西安交通大学 Online measuring system and method for rotary part of lathe
CN105033751B (en) * 2015-06-24 2017-07-11 中国科学院光电技术研究所 The on-line checking processing unit (plant) and method of a kind of convex cone mirror
CN105139005A (en) * 2015-09-23 2015-12-09 无锡市中捷减震器有限公司 Detection device with workpiece identification and marking functions
TWI640388B (en) * 2017-11-10 2018-11-11 財團法人工業技術研究院 Servo tuning device and servo tuning method
CN108036724A (en) * 2017-12-01 2018-05-15 武汉万集信息技术有限公司 A kind of dimension of object measuring method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5644141A (en) * 1995-10-12 1997-07-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus and method for high-speed characterization of surfaces
CN2378150Y (en) * 1999-05-13 2000-05-17 武汉市青山机电厂 Laser measuring, digital control precision automatic cutting device
CN1743800A (en) * 2005-10-12 2006-03-08 浙江大学 Micro angular displacement measuring device based on linear array charge-coupled device
CN2786554Y (en) * 2003-12-05 2006-06-07 邹定海 Three-dimensional laser vision measuring sensor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05231832A (en) * 1992-02-24 1993-09-07 I N R Kenkyusho:Kk Method and device for measuring three-dimensional shape
KR100421729B1 (en) * 2000-08-25 2004-03-10 재단법인 포항산업과학연구원 A laser triangulation sensor with multiple position detection rules

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5644141A (en) * 1995-10-12 1997-07-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Apparatus and method for high-speed characterization of surfaces
CN2378150Y (en) * 1999-05-13 2000-05-17 武汉市青山机电厂 Laser measuring, digital control precision automatic cutting device
CN2786554Y (en) * 2003-12-05 2006-06-07 邹定海 Three-dimensional laser vision measuring sensor
CN1743800A (en) * 2005-10-12 2006-03-08 浙江大学 Micro angular displacement measuring device based on linear array charge-coupled device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JP特开平5-231832A 1993.09.07
方平等.基于线阵CCD的新型微位移传感器的研究.《传感技术学报》.2006,第19卷(第1期),第74-77页. *
王晓嘉等.激光三角法综述.《仪器仪表学报》.2004,第25卷(第4期),第601-608页. *

Also Published As

Publication number Publication date
CN102001025A (en) 2011-04-06

Similar Documents

Publication Publication Date Title
CN105823435B (en) A kind of gear measurement device and gear measuring method based on laser displacement sensor
EP2929287B1 (en) High speed metrology with numerically controlled machines
CN107402044B (en) A kind of online nondestructive detection system of metal increasing material manufacturing component quality and method
CN102607457B (en) Measuring device and measuring method for large three-dimensional morphology based on inertial navigation technology
CN105404238B (en) A kind of linearisation scaling method of the gauge head pose in machine laser measurement
CN102322796B (en) Laser detection device and method for gear parameters
US7278222B2 (en) Method for measuring a program-controlled machine tool
US6973738B2 (en) Measuring method and device, machine tool having such device, and work processing method
CN101842188B (en) Rotating part position and change finding method and apparatus
TWI474891B (en) Calibration method of gear measuring device
CA2718224C (en) Apparatus, system, and method for measuring thread features on pipe or tube end
CN104084669B (en) A kind of circumferential weld visible detection method detected based on decoupling zero
CN203849177U (en) Non-contact detection equipment
CN100335860C (en) Workpiece inspection method
CN102095384B (en) Multiparameter internal-diameter measurement system and method based on high-precision coaxial positioning
EP3115742B1 (en) 3d measuring machine
CN103234481B (en) High-efficiency and high-precision detection device for circular arc roundness of cutter point of diamond cutter
CN101718536B (en) Triangle diamond cutter angle high-precision automatic measuring system and measuring method
CN107063119B (en) Inner wall of the pipe pattern and central axis linearity measurer and method
CN105547344B (en) A kind of test equipment calibrating installation and its calibration method
CN102042811B (en) High-precision multi-parameter automatic inner diameter measurement mechanism and method
CN105758343B (en) The device and method of C axis centre of gyration calibration based on double standard balls
CN103920990B (en) A kind of laser Machining head of automatic controlled working focal length and processing method
CN103148784B (en) The full-scale detection method of a kind of large-scale blade
CN103180094B (en) The assay method of tool sizes and determinator

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: SUZHOU DIKA TESTING TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: XI AN JIAOTONG UNIV.

Effective date: 20150602

TR01 Transfer of patent right

Effective date of registration: 20150602

Address after: 215505 Jiangsu province Suzhou Changshou City Lianfeng Road No. 58

Patentee after: Suzhou cartesan Testing Technology Co. Ltd

Address before: 710049 Xianning West Road, Shaanxi, China, No. 28, No.

Patentee before: Xi'an Jiaotong University

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 710049 XI AN, SHAANXI PROVINCE TO: 215505 SUZHOU, JIANGSU PROVINCE

EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20110406

Assignee: Xi'an like Photoelectric Technology Co., Ltd.

Assignor: Suzhou cartesan Testing Technology Co. Ltd

Contract record no.: 2015610000089

Denomination of invention: Processing precision property online measurement device and method for super-heavy lathe

Granted publication date: 20130206

License type: Exclusive License

Record date: 20150902

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model