GB2172707A - Parts inspection equipment - Google Patents

Parts inspection equipment Download PDF

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Publication number
GB2172707A
GB2172707A GB8606240A GB8606240A GB2172707A GB 2172707 A GB2172707 A GB 2172707A GB 8606240 A GB8606240 A GB 8606240A GB 8606240 A GB8606240 A GB 8606240A GB 2172707 A GB2172707 A GB 2172707A
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GB
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Application
Patent type
Prior art keywords
measured
measuring
parts
dimension
means
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB8606240A
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GB8606240D0 (en )
Inventor
Takeshi Nishimura
Hideaki Oomori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitutoyo Manufacturing Co Ltd
Original Assignee
Mitutoyo Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic means
    • G01B7/004Measuring arrangements characterised by the use of electric or magnetic means for measuring coordinates of points
    • G01B7/008Measuring arrangements characterised by the use of electric or magnetic means for measuring coordinates of points using coordinate measuring machines
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/02Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring length, width, or thickness
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic means
    • G01B7/02Measuring arrangements characterised by the use of electric or magnetic means for measuring length, width or thickness

Abstract

A parts inspection equipment includes a plurality of dimension measuring devices (10, 12, 14, 16, 18) for measuring portions of respective parts. The equipment specifies the portions to be measured of the respective parts, and the measuring device suitable for the said portions. The equipment further stores the results of the measuring steps, reads measured values of the respective dimension measuring devices, processes the data thus read and outputs the same as the measured result information. With the above- described arrangement, a worker can concentrate his attention on the measuring operation without being annoyed by individual and optional works such as selection of the dimension measuring machine, consideration of steps of the measuring operation, reading of the measured values, processing of the measured results and the like. <IMAGE>

Description

SPECIFICATION Parts inspection equipment This invention relates to a parts inspection equipment, and more particularly to a parts inspection equipment, wherein the equipment includes a plurality of dimension measuring means fit for every dimension measured portions of respective parts, suitable for use in performing quality control of the parts by measuring dimensions of parts of a wide variety by use of contact type dimension measuring machines.

In general, parts produced by machining are subjected to samplings of parts of the total number or a predetermined number, whereby dimensions of dimension measured portions are measured, so that pass-fall is tested. Because of this, in order to prove the funciton of highly efficient machining by automatic producing instrument such as machining center, it is desired to attain speed-up of inspection of the parts.

The inspection of parts has heretofore been performed on the basis of a designed dimension table corresponding to the machined parts. However, selection of the dimension measuring machine used for the measurement of the dimensions has been generally left to the skill level and the like of a worker. For example, the worker selects one at his discretion out of dimension measuring machines of a wide variety from samall-sized dimension measuring machines such as slide calipers, micrometer and dial guage to a large-sized coordinate measuring machine provided with a touch signal probe, to thereby use it suitably for every parts and every measured portions in every parts.

in consequence, there has been no guarantee in that the parts are measured by use of the optimal dismension measuring machine for the dimension measured portions, and moreover, the working efficiency has been low.

Furthermore, many of the dimension measuring machines are so-called contact type dismension measuring machines wherein a measuring element is brought into contact with the parts and a displacement value of the measuring element is read for the measurement, whereby securing of measuring force, engagement with the measured surface and the like are diversified and instable, thus presenting problems in accuracy. Further, the measuring steps are different from one dimension measuring machine to another, which is coupled with the period of time required for selection of the dimension measuring machine, whereby the period or time for the preparatory plan is prolonged, thus presenting such disadvantages that the working efficiency as a whole is low, and moreover, erroneous recordings tend to occur when entrances corresponding to the measured results are made to a recording paper.Furthermore, in performing the quality control, data must be inputted from a recording paper to a computer, etc., thus requiring useless duplicate efforts. Moreover, the selected dimension measuring machine has a construction fit for the dimension measured portions, whereby there are many cases where the graduation for reading and the scale intervals in an encoder incorporating type dimension measuring machine are diversified, thus presenting such disadvantages that the conversion works are troublesome to contribute to lowered efficiency and accuracy.

Moreover, in general, the worker is specialized in the measuring works, whereby collection of information in the factory as a whole concerning the production schedule, the inspection schedule and the quality control is performed at an interval of half day or one day, thus presenting the problem of having the down time. While, such a situation is brought about that inspections are performed with the number of cycles and accuracy beyond hecessity.

As described above, in spite of that the conventional inspection as a whole has been a significant process governing the quality of the products, in fact, the inspection has been manually controlled and left to the discretion of the worker, whereby it has been very difficult to accomplish the essential function of the working efficiency and the inspection accuracy.

The present invention has been developed to obviate the above-described disadvantages of the prior art and has as its object the provision of a parts inspection equipment wherein a worker can concentrate his attention on the measuring operation without being annoyed by individual and optional works such as selection of the dimension measuring machine, consideration of steps of the measuring operation, reading of measured values, processing of the measured results and the like, and moreover, the worker can obtain measured values highly reliable through coordinated and uniformalized works quickly and unwastefully.

To this end, the present invention contemplates that, in a parts inspection equipment, as the arrangernent of the gist of the inveniton is shown in Fig. 1, the equipment includes: a plurality of dimension measuring means fit for dimension measured portions of respective parts, for measuring the dimensions of the parts; memory means for storing at least parts information to specify the dimension measured portions of the respective parts and the dimension measuring means fit for the dimension measured portions, and measured result information per parts; measured data processing means for reading measured values of the respective dimension measuring means as measured in fit conditions, processing the data thus read to output the same to the memory means as the mea sured result information; and measurement instructing means for indicat ing at least the subsequent parts, dimensions of which are to be measured, the dimension measured portions of the parts, and the di mension measuring means to be used, based on at least the parts information stored in the memory means.

A specific form of the present invention is of such an arrangement that the plurality of dimension measuring means are made to be contact type dimension measuring machines different in main body's construction from one another so as to fit for the dimension mea sured portions of the respective parts, so that the dimension measuring means fit for the di mension measured portions of the respective parts can be readily obtained.

Another specific form of the present inven tion is of such an arrangement that a plurality of sets of measured data processing means and measurement instructing means are made connectible to the memory means, so that a few number of memory means can meet the requirement.

A further specific form of the present inven tion is of such an arrangement that the mea sured data processing means includes the conversion function of adjusting a difference in scale interval between measured value signals inputted from the respective dimension mea suring means, to thereby eliminate the neces sity of the aforesaid conversion works.

A still. further specific form of the present invention is of such as arrangement that the measurement instructing means is made to in dicate at least the presence of need of the measurement, the subsequent parts, dimen sions of which are to be measured, dimension measured portions thereof, the dimension measuring means to be used and suggestions in accordance with pass-fail test data of the measured values included in the measured data information, the production information from the factory as a whole and demands from the worker, in addition to the parts infor mation, so that adequate measurement in structions can be given.

A yet further specific form of the present invention is of such an arrangement that the measured data processing means and the measurement instructing means are integrally formed in a terminal device, so that the con struction is simplified and the workability is improved.

According to the present invention, in a parts inspection equipment including a plurality of dimension measuring means fit for dimen sion measured portions of respective parts, at least parts information for specifying dimen sion measured portions of respective parts and the dimension measuring means fit for the dimension measured portions and measured result information of the respective parts are stored, measured values of respective dimension measuring means as measured in fit conditions are read, data thus read are processed and outputted as the measured result information, further, at least the subsequent parts, dimensions of which are to be measured, the dimension measured portions thereof and the dimension measuring means to be used are indicated, based on at least the parts information, so that the worker can concentrate his attention on the measuring operation without being annoyed by individual and optional works such as selection of the dimension measuring machine, consideration of steps of the measuring operation, reading of the measured values, processing of the measured results and the like, thus improving the reliability of the measured values. Furthermore, the selection of the dimension measuring machine and the steps of the measuring operation are coordinated, so that the coordinated and uniformalized works can be performed, thus improving the reliability of the inspections. Further, the optimal inspections fit for the general production schedule, inspection schedule and quality control can be performed for a short period of time.

The exact nature of this invention, as well as other objects and advantages thereof, wiil be readily apparent from consideration of the following specification relating to the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof and wherein: Fig. 1 is a block diagram showing the arrangement of the gist of the parts inspection equipment according to the present invention; and Fig. 2 is a block diagram including a partially perspective view, showing the arrangement of one embodiment of the present invnetion.

Detailed description will hereunder be given of one embodiment of the parts inspection equipment according to the present invention with reference to the drawings.

As shown in Fig. 2, in this embodiemnt, as the dimension measuring means, there are provided contact type dimension measuring machines, such as digitally outputting micrometer 10, micrometer head 12, indicator 14, slide calipers 16 or linear gauge 18. Each of them has a movable measuring element in a main body, a touch signal probe or the like, and includes an encoder for converting a displacement value of the measuring element or a slider into a digital signal such as pulse signal or rectangular wave signal and outputting the same, to thereby measure dimensions of a subject to be measured from the displacement value of the measuring element or the slider when the measuring element or the touch signal probe is brought into contact with the subject to be measured.

Furthermore, a host computer 20 is provided as the memory means for storing the parts information such as the number of parts to be inspected (number of samplings), the dimension measured portions, the dimension measuring machines fit for the dimension measured portions, the steps of the measuring operation, the pass-fail test data (the minumum values, the maximum values and the deviations) and the measured result information of the respective parts.

This host computer 20 further has functions of automatically outputting the instructions such for example as instructions to cause the measurement instructing means to make the measurement in accordacne with production information and the like derived from a whole factory such as a machining factory, machines and the like, and further, parts information therefor. Furthermore, the worker can control the measurement instructing means to actively seek the information corresponding to the instructions. The information corresponding to this case can be outputted. In this case, specific information relating to the parts (e.g. the suggestions on the grasping of the parts and the handling of the measuring element) can be demanded. In consequence, it is advantageous in the case where an unskilled worker operates, the parts is different from the conventional one, and the like.Additionally, this specific information can be not outputted when the worker does not demand, for example.

Disposed close to the dimension measuring machinces is a terminal device 22 integrally provided with two functions including: a function of the measured data processing means for reading measured values of the respective dimension measuring machines, which are measured in the fit conditions, processing the data thus read and outputting the same to the host computer 20 as the measured result information; and another function of the measurement instructing means for response to the demand of the worker indicates the parts information including the subsequent parts to be measured, the number of parts, the dimension measuring machines to be used and corresponding measured surfaces and/or the number of repaeated measurings of one and the same portion, and the worker can be informed of the mode of works.In this sense, it is preferable to provide a Cathode Ray Tube and a tabulation device. Further, providing for something wrong occurs, means to confirm countermeasures to the host computer 20 is also provided.

A plurality of combinations between the dimension measuring machine and the terminal devices 22 can be provided at each of measuring sites or factories through each of interface devices 24 for example.

Connecting between each of the dimension measuring machines and the terminal device 22, between the terminal device 22 and the interface device 24 and between the interface device 24 and the host computer 20 are a cable, an acoustic coupler, and optical fiber or and/or a radio, for example.

According to this embodiment, the dimension measuring machine is operated at the measuring site, by the measuring information demanded as necessary, or automatic command indicating information to make measuring. Measured results are automatically taken in or manually taken in as necessary, and the results are stored by the host computer 20, and quality control data are processed as necessary.

In this embodiment, the dimension measuring means are made to be the contact type dimension measuring machines being different in main body's construction from one another, so that the dimension measuring machines can be readily fit for the dimension measured portions of the respective parts. Furthremore, dispersions in the measured value of the measuring force, the engaged state of the measured surfaces and the like due to the personal error can be readily and quickly countered. Additionally, types of the dimension measuring means need not necessarily be limited to these, and the dimension measuring machines of other types may be used.

In this embodiment, a plurality of terminal divices 22 are connectible to the host computer 20, so that the production schedule of the factory as a whole and the like can be readily countered. Additionally, the storing device can be rendered compact in size, and may be provided on each of the terminal device 22.

Further, in this embodiment, the measured data processing function of the terminal device 22 includes the conversion function of adjusting a difference in scale interval between the measured value signals inputted from the respective dimension measuring machines, so that necessity of the conversion works is eliminated and the worker can concentrate his attention on the measuring operation.

Furthermore, in this embodiment, the measurement instructing function of the terminal device 22 is made to indicate at least the presence of need of the measurement, the subsequent parts, dimensions of which are to be measured, dimension measured portions thereof, the dimension measuring means to be used and suggestions, in accordance with the pass-fail test data of the measured values included in the measured data information, the production information from the factory as a whole and demands from the worker, in addition to the parts information, so that the worker can concentrate his attention on the measuring operation, and moreover, a possibility that erroneous measurements are performed can be reduced.

In this embodiment, the function of the measured data processing means and the function of the measurement instructing means are integrally formed in the terminal device 22, so that the construction is simplified and the workability is high. Additionally, the function of the measured data processing means and the function of the measurement instructing means can be embodied in devices separate from each other.

Claims (11)

1. A parts inspection equipment comprising: a plurality of dimension measuring means fit for dimension measured portions of respective parts, for measuring the dimensions of the parts; memory means for storing at least parts information to specify said dimension measured portions of the respective parts and the dimension measuring means fit for said dimension measured portions, and measured result information per parts; measured data processing means for reading measured values of the respective dimension measuring means- as measured in fit conditions, processing the data thus read to output same to the memory means as the measured result information; and measurement instructing means for indicating at least the subsequent parts, dimensions of which are to be measured, said dimension measured portions of the parts, and the dimension measuring means to be used, in accordance with at least the parts information stored in said memory means.
2. A parts inspection equipment as set forth in claim 1, wherein said plurality of dimension measuring means are made to be contact type dimension measuring machines different in main body's construction from one another so as to be fit for said dimension measured portions of the respective parts.
3. A parts inspection equipment as set forth in claim 2, wherein said contact type dimension measuring machines include digitally outputting mocrometer (10), micrometer head (12), indicator (14), slide calipers (16) and linear gauge (18).
4. A parts inspection equipment as set forth in claim 1, wherein said memory means additionally stores the number of parts to be inspected, the steps of the measuring operation and pass-fail test data.
5. A parts inspection equipment as set forth in claim 1, wherein said memory means is provided in a host computer (20), which has functions of automatically outputting instructions to cause the measurement instructing means to make the measurement in accordance with production information derived from a factory as a whole, and further, parts information therefor.
6. A parts inspection equipment as set forth in claim 1, wherein a plurality of sets of measured data processing means and measurement instructing means are connectible to said memory means.
7. A parts inspection equipment as set forth in claim 1, wherein said measured data processing means include a conversion function of adjusting a difference between measured value signals inputted from the respective dimension measuring means.
8. A parts inspection equipment as set forth in claim 1, wherein said measured data processing means is provided with a switch for reading the measured values measured in the optimal conditions form said dimension measuring means.
9. A parts inspection equipment as set forth in claim 1, wherein said measurement instructing means indicates at least the presence of need of the measurement, the subsequent parts, dimensions of which are to be measured, the dimension measrued portions thereof, the dimension measuring means to be used and suggestions, in accordance wiht pass-fail test data of the measured values included in the measured result information, production information from the factory as a whole and demands from a worker, in addition to the parts information.
10. A parts inspection equipment as set forth in claim 1, wherein said measured data processing means and said measurement instructing means are integrally formed in a terminal device (22).
11. A parts inspection equipment substantially as hereinbefore described with reference to Figures 1 to 2 of the accompanying drawings.
GB8606240A 1985-03-14 1986-03-13 Parts inspection equipment Withdrawn GB8606240D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5145585A JPS61209309A (en) 1985-03-14 1985-03-14 Apparatus for inspecting parts

Publications (2)

Publication Number Publication Date
GB8606240D0 GB8606240D0 (en) 1986-04-16
GB2172707A true true GB2172707A (en) 1986-09-24

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Family Applications (1)

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GB8606240A Withdrawn GB8606240D0 (en) 1985-03-14 1986-03-13 Parts inspection equipment

Country Status (4)

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JP (1) JPS61209309A (en)
CN (1) CN86102460A (en)
DE (1) DE3608070A1 (en)
GB (1) GB8606240D0 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240151A2 (en) * 1986-03-04 1987-10-07 Rank Taylor Hobson Limited Metrological apparatus
EP0342770A2 (en) * 1986-03-04 1989-11-23 Rank Taylor Hobson Limited Metrological apparatus
EP0375622A1 (en) * 1988-12-21 1990-06-27 Hans Rudolf Weber Measuring array comprising at least one linear electronic length-measuring probe
EP0392699A2 (en) * 1989-04-14 1990-10-17 Renishaw plc Probe head
US5088337A (en) * 1989-04-14 1992-02-18 Renishaw Plc Probe head
US5095638A (en) * 1990-10-05 1992-03-17 Northrop Corporation Method for assigning standard fasteners in accordance with a series of measurements
FR2680238A1 (en) * 1991-08-05 1993-02-12 Airgiss Sa Numerical (digital) micrometer
EP0643280A1 (en) * 1993-09-13 1995-03-15 Carl Zeiss Coordinate measuring machine having a probe-head and electronic circuit for processing the touch signals
EP0678726A2 (en) * 1994-04-19 1995-10-25 Comtorgage Corporation Actuator aond programmable amplifier for an expanding plug gage head
WO1998021549A1 (en) * 1996-11-11 1998-05-22 Amada Company, Limited Method and apparatus for measuring the dimensions of a sheet metal parts, and a sheet metal processing system which utilizes such measuring method and apparatus

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JPS6379188A (en) * 1986-09-23 1988-04-09 Yamatake Honeywell Co Ltd Environment measuring data processing system
JPS63117217A (en) * 1986-11-05 1988-05-21 Kamemasa Fujito Electronic measuring control system
US5136285A (en) * 1988-05-20 1992-08-04 Man Design Co., Ltd. Portable data transmitting/receiving apparatus
JPH032524A (en) * 1989-05-30 1991-01-08 Toyo Umpanki Co Ltd Data collection device for diagnosis of electric mechanical system device
DE4034702A1 (en) * 1990-10-31 1992-05-07 Siemens Ag Testing active tools of bending machines, e.g. bending rams - holding tool in measurement position with magnetic field and using two sensors simultaneously in automated process
JPH05157590A (en) * 1991-12-03 1993-06-22 Tokai Carbon Co Ltd Multiple signal measuring device
CN103575174B (en) * 2012-07-18 2017-04-12 上海潜龙电子科技有限公司 Measured data correcting method
CN104075650B (en) * 2013-03-29 2017-10-27 浙江天煌科技实业有限公司 A work position detecting means
CN104949606B (en) * 2015-05-19 2018-01-05 苏州市职业大学 A data twisted length measuring device and method of use

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US4181958A (en) * 1978-04-21 1980-01-01 The Valeron Corporation Multiple probe gage system
EP0132947A1 (en) * 1983-07-27 1985-02-13 Ex-Cell-O Corporation Computer programme-controlled contour inspection method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4181958A (en) * 1978-04-21 1980-01-01 The Valeron Corporation Multiple probe gage system
EP0132947A1 (en) * 1983-07-27 1985-02-13 Ex-Cell-O Corporation Computer programme-controlled contour inspection method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240151A2 (en) * 1986-03-04 1987-10-07 Rank Taylor Hobson Limited Metrological apparatus
EP0240151A3 (en) * 1986-03-04 1988-03-02 Rank Taylor Hobson Limited Metrological apparatus
US4807152A (en) * 1986-03-04 1989-02-21 Rank Taylor Hobson Limited Metrological apparatus
EP0342770A2 (en) * 1986-03-04 1989-11-23 Rank Taylor Hobson Limited Metrological apparatus
EP0342770A3 (en) * 1986-03-04 1990-03-14 Rank Taylor Hobson Limited Metrological apparatus
EP0375622A1 (en) * 1988-12-21 1990-06-27 Hans Rudolf Weber Measuring array comprising at least one linear electronic length-measuring probe
EP0392699A2 (en) * 1989-04-14 1990-10-17 Renishaw plc Probe head
EP0392699A3 (en) * 1989-04-14 1991-03-13 Renishaw plc Probe head
US5084981A (en) * 1989-04-14 1992-02-04 Renishaw Plc Probe head
US5088337A (en) * 1989-04-14 1992-02-18 Renishaw Plc Probe head
US5095638A (en) * 1990-10-05 1992-03-17 Northrop Corporation Method for assigning standard fasteners in accordance with a series of measurements
FR2680238A1 (en) * 1991-08-05 1993-02-12 Airgiss Sa Numerical (digital) micrometer
WO1993003323A1 (en) * 1991-08-05 1993-02-18 Airgiss S.A. Micrometer
EP0643280A1 (en) * 1993-09-13 1995-03-15 Carl Zeiss Coordinate measuring machine having a probe-head and electronic circuit for processing the touch signals
US5526576A (en) * 1993-09-13 1996-06-18 Carl-Zeiss-Stiftung, Heidenheim (Brenz) Coordinate measurement machine having a probe head and an electronic system for processing probe signals
EP0678726A2 (en) * 1994-04-19 1995-10-25 Comtorgage Corporation Actuator aond programmable amplifier for an expanding plug gage head
EP0678726A3 (en) * 1994-04-19 1996-06-12 Comtorgage Corp Actuator aond programmable amplifier for an expanding plug gage head.
WO1998021549A1 (en) * 1996-11-11 1998-05-22 Amada Company, Limited Method and apparatus for measuring the dimensions of a sheet metal parts, and a sheet metal processing system which utilizes such measuring method and apparatus

Also Published As

Publication number Publication date Type
JPS61209309A (en) 1986-09-17 application
CN86102460A (en) 1986-09-10 application
GB8606240D0 (en) 1986-04-16 grant
DE3608070A1 (en) 1986-09-18 application

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