CN109420933A - Workpiece detecting device and workpiece inspection method - Google Patents
Workpiece detecting device and workpiece inspection method Download PDFInfo
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- CN109420933A CN109420933A CN201810974336.6A CN201810974336A CN109420933A CN 109420933 A CN109420933 A CN 109420933A CN 201810974336 A CN201810974336 A CN 201810974336A CN 109420933 A CN109420933 A CN 109420933A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
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- Engineering & Computer Science (AREA)
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- A Measuring Device Byusing Mechanical Method (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention provides the Workpiece detecting device and workpiece inspection method of a kind of position for being able to detect workpiece.Workpiece detecting device has: probe detects that whether there is or not the contacts with workpiece within the specified scope, and issues the activation signal for indicating detection result；And Interference Detection portion, detect whether there is interference, wherein when the activation signal got indicates to have the contact with workpiece, determining interference portion determines whether to have interference within the stipulated time before this.Coordinate determination section is based on the judgement in determining interference portion as a result, the coordinate to determine the workpiece.
Description
Technical field
The present invention relates to Workpiece detecting devices and workpiece inspection method that the position of a kind of pair of workpiece is detected.
Background technique
In the past, it is well known that make in the technology that the position of the processing object (workpiece) to processing unit (plant) is detected
With mobile probe.
Japanese Patent Publication the 2016-142638th has contact and detection agency.When contact and detection point contact
When, detection agency detection conducts.After contact moves along the first direction towards test point and detects conducting, contact edge
The direction second direction opposite with first direction is mobile.It is maintained contact moves defined threshold or more in a second direction
When conducting, it is determined to have a possibility that liquid of electric conductivity is attached to the test point.It is being interfered in detection agency
When period detects contact of the probe with workpiece, detection result is possible to the influence being interfered.Result of that probe incurs workpiece
Position detection inaccuracy.The detection method that above-mentioned bulletin the 2016-142638th can not solve the problem above-mentioned.
Summary of the invention
The present invention provides a kind of work of position that bring influence can will be interfered accurately to detect workpiece with taking into account
Part detection device and workpiece inspection method.
The Workpiece detecting device of technical solution 1 has: probe is detected within the specified scope whether there is or not the contact with workpiece,
And issue the activation signal for indicating detection result；And coordinate determination section, it is determined based on the activation signal that the probe is issued
The coordinate of the fixed workpiece, the Workpiece detecting device are also equipped with: Interference Detection portion detects whether there is interference；And interference
Determination unit, when the probe has issued expression and exists with the activation signal of the contact of the workpiece, the determining interference portion is sentenced
It is fixed whether within the stipulated time before issuing the activation signal Interference Detection portion detects the presence of interference, wherein it is described
Coordinate determination section is based on the judgement in the determining interference portion as a result, the coordinate to determine the workpiece.
When the activation signal got indicates to have the contact with workpiece, the determining interference portion determines in rule before this
With the presence or absence of interference in fixing time.The coordinate determination section determines the workpiece based on the judgement result in the determining interference portion
Coordinate.Therefore, when determining the coordinate of workpiece, Workpiece detecting device can eliminate interference effect.
The Workpiece detecting device of technical solution 2 has drive motor, which drives the probe, described
Interference includes the load of the drive motor.
The Interference Detection portion carry out include interference in being supported on of drive motor of the probe detection.It is described dry
Determination unit is disturbed to determine whether to be supported on interior interference in the presence of including the drive motor within the stipulated time before this.Therefore,
When determining the coordinate of workpiece, Workpiece detecting device can be eliminated because of the interference caused by the torque of the drive motor of device
It influences.
The Workpiece detecting device of technical solution 3,4 has invalid portion, is determined as described in the sending in the determining interference portion
When the Interference Detection portion detects the presence of interference in stipulated time before activation signal, which makes described get
Activation signal is invalid.
When the determining interference portion is determined to have interference, the invalid portion make the activation signal got without
Effect.Therefore, Workpiece detecting device is capable of the influence of exclusive PCR, to accurately determine the coordinate of workpiece.
The Workpiece detecting device of technical solution 5 has speed changing portion, is judged to connecing described in sending in the determining interference portion
When the Interference Detection portion detects the presence of interference in stipulated time before touching signal, which changes the shifting of the probe
Dynamic speed, when the speed changing portion changes the movement speed of the probe, the probe carries out in the prescribed limit again
The detection.
When the determining interference portion is determined to have interference, change the movement speed of the probe and again execute described in
Detection.When change probe movement speed when, the opportunity interfered changes, thus Workpiece detecting device can eliminate it is dry
Disturb influence.
In the Workpiece detecting device of technical solution 6, when changing the movement speed of the probe, the determining interference
Portion determines whether interfering in the time memory longer than the stipulated time.
When changing the movement speed of the probe, it is also possible to which existing on the detectivity of the probe influences.Cause
This, Workpiece detecting device is changed according to the movement speed of the probe come when changing related with the judgement in the determining interference portion
Between range, therefore can accurately detect the position of workpiece.
The workpiece inspection method of technical solution 7 is the workpiece inspection detected for position of the Workpiece detecting device to workpiece
Survey method, the Workpiece detecting device have: probe, detect within the specified scope whether there is or not with the contact of the workpiece, and issue
Indicate the activation signal of detection result；And coordinate determination section, it is determined based on the activation signal that the probe is issued described
The coordinate of workpiece, in the workpiece inspection method, the Workpiece detecting device is also equipped with, which detects whether exist
Interference, the workpiece inspection method have issued expression in the probe and exist and the work the following steps are included: determining interference step
When the activation signal of the contact of part, the Interference Detection portion inspection within the stipulated time before issuing the activation signal is determined whether
It measures in the presence of interference；And based on the judgement in the determining interference step as a result, the coordinate to determine the workpiece.
When the activation signal got indicates to have the contact with workpiece, the stipulated time memory before this is determined whether
It is interfering, the coordinate of the workpiece is determined based on the result of the judgement.Therefore, it can be eliminated when determining the coordinate of workpiece dry
Disturb influence.
Detailed description of the invention
Fig. 1 is the structure chart for indicating the major part structure of Workpiece detecting device of embodiment 1.
Fig. 2 is the functional block diagram for indicating the major part structure of data processing division of embodiment 1.
Fig. 3 is the explanatory diagram for summarily illustrating the location of workpiece detection processing of embodiment 1.
Fig. 4 is the explanatory diagram for summarily illustrating the location of workpiece detection processing of embodiment 1.
Fig. 5 is the flow chart that the processing of the location of workpiece detection to embodiment 1 is illustrated.
Fig. 6 is the functional block diagram for indicating the major part structure of data processing division of embodiment 2.
Fig. 7 is the structure chart for indicating the major part structure of Workpiece detecting device of embodiment 4.
Specific embodiment
Hereinafter, being illustrated based on Workpiece detecting device and workpiece inspection method of the attached drawing to embodiments of the present invention.
The Workpiece detecting device of embodiment is set to lathe, and detects position of the workpiece to be machined on the platform of lathe, carries out
The measurement of machining benchmark point etc..
(embodiment 1)
As shown in Figure 1, the Workpiece detecting device 100 of present embodiment has probe 10 and main body 20.Workpiece detecting device
100 probe 10 moves within the specified scope, to carry out having contactless contact to detect with workpiece W for detection probe 10.Work
Part detection device 100 determines the coordinate of workpiece W using the result of contact detection.Hereinafter, these processing are also known as workpiece position
Set detection.
Probe 10 has shell 1 and has the contact pilotage 3 of contact ball 2 in front end.Shell 1 is for keeping contact pilotage 3.Contact pilotage 3 hangs down
Directly in the platform.Contact pilotage 3 can be from Direction distortion from the state perpendicular to platform to the upper surface along the platform and energy
It is enough to restore.Probe 10 has communication unit 11 and sensor 12.
Sensor 12 detects vibration or deformation etc. of contact pilotage 3, to detect whether contact ball 2 contacts with workpiece W.In contact ball
When 2 and workpiece W is contacted, sensor 12 issues the detectable signal for indicating the simulation of the meaning.
The detectable signal of the simulation is transformed to digital signal by communication unit 11, and is sent in a wired mode or wireless mode
To main body 20.About the digital signal, it is expressed as " 1 " when contact ball 2 and workpiece W are contacted, contact ball 2 and workpiece W is not connect
" 0 " is expressed as when touching.After, which is known as activation signal.
Main body 20 have communication unit 21, Interference Detection portion 22, driving mechanism 23, data processing division 24, output section 25 and
Storage unit 26.Communication unit 21 receives activation signal from probe 10.Storage unit 26 stores the activation signal that communication unit 21 receives.It is dry
It disturbs test section 22 and detects whether there is interference when contacting detection.The interference includes friction torque, because the influence of gravity is produced
Torque caused by raw torque, the interference because of other axis, torque caused by the influence because of other devices on periphery.It being capable of base
The value of these torques is calculated in speed of the drive motor driven to probe 10 etc..Specifically, 22 base of Interference Detection portion
In subtracting the value that estimation torque obtains from the output torque of drive motor, carry out the value of operation interference.It obtains and drives from driving mechanism 23
The output torque of dynamic motor estimates torque according to the speed of drive motor come operation.Also, the Interference Detection portion of present embodiment
22 will also be detected as interfering because of torque caused by the influence of the drive motor of driving probe 10.Interference Detection portion 22 is detecting
Interference value be defined threshold more than when, be determined to have interference.Interference Detection portion 22 is based on the judgement as a result, issuing table
It is shown with the interference signal for not detecting interference.Storage unit 26 stores the interference signal.The interference signal is that interference will be present
When be expressed as that " 1 ", there will be no be expressed as the digital signal of " 0 " when interference.
Driving mechanism 23 (drive motor) includes for making probe 10 along X-axis (left and right directions), Y-axis (front-rear direction), Z axis
(up and down direction) mobile mobile mechanism.Probe 10 is installed on holder in the same manner as tool, moves together with holder.Cause
This, the mobile mechanism includes the servo amplifier for making the servo motor of holder movement and being controlled servo motor
Deng.
Output section 25 exports defined information to the user of Workpiece detecting device 100.Output section 25 can be loudspeaker,
Lamp, display unit etc..Storage unit 26 is flash memory, EEPROM (registered trademark), HDD, MRAM (magnetoresistive memory), FeRAM
Non-volatile storage medium such as (ferroelectric memory), OUM.Storage unit 26 stores the control program for detecting the location of workpiece.
Storage unit 26 stores the activation signal that communication unit 21 receives and indicates the interference of the result of the Interference Detection in Interference Detection portion 22
Signal.
Data processing division 24 is based on the activation signal and interference that storage unit 26 is stored in the processing that the location of workpiece detects
The rotation position of signal and the servo motor that can be obtained from the servo amplifier, to determine position (X-axis, Y of workpiece W
The coordinate of axis and Z axis).
Probe 10 and Interference Detection portion 22 continuously issue activation signal and interference signal in temporal sequence.Storage unit 26 will
Activation signal and interference signal are all stored in each issue.In the processing of location of workpiece detection, every the set time,
Activation signal and interference signal are obtained from storage unit 26 to carry out location of workpiece detection with the fixed cycle.
The Workpiece detecting device 100 of present embodiment is without being limited thereto, is also possible to probe 10 with the fixed cycle and issues contact
The structure of signal.
As shown in Figure 2, the data processing division 24 of the Workpiece detecting device 100 of embodiment 1 has CPU 241, acquisition unit
242, determining interference portion 243, coordinate determination section 244, invalid portion 245 and notification unit 246.
ROM (illustration omitted) the control program pre-saved is loaded into RAM (illustration omitted) and is executed by CPU 241,
To carry out the control of above-mentioned various hardware.
Acquisition unit 242 periodically reads the activation signal from storage unit 26 to be obtained.A cycle is 125 μ
s。
When the acquisition activation signal that acquisition unit 242 is got indicates to exist with the contact of workpiece W, determining interference portion 243
Determine whether there is interference within the stipulated time before acquisition unit 242 obtains the activation signal.In detail, contact is being obtained
When signal is " 1 ", determine whether that within the stipulated time before acquisition unit 242 obtains the activation signal, (such as a cycle) is deposited
It is interfering.Determining interference portion 243 carries out the judgement based on the interference signal that storage unit 26 is stored.
The Workpiece detecting device 100 of present embodiment is without being limited thereto, and the stipulated time may be two periods, may be used also
Think three periods.
Coordinate determination section 244 is based on the judgement result for obtaining activation signal, determining interference portion 243 and from servo amplifier
The rotation position of the servo motor got, to determine the coordinate of workpiece W.
That is, coordinate determination section 244 is " 1 " and within the stipulated time before the acquisition activation signal obtaining activation signal
There is no when interference, the coordinate of workpiece W is determined based on the rotation position of servo motor.
Invalid portion 245 is according to the judgement in determining interference portion 243 as a result, keeping acquisition activation signal invalid.In determining interference portion
243 be determined as in the stipulated time before obtaining activation signal exist interference when, invalid portion 245 make obtain activation signal without
Effect.At this point, coordinate determination section 244 is determined without the coordinate of workpiece W.
Notification unit 246 is notified based on the judgement result in determining interference portion 243 to user.In determining interference portion 243
When being judged to having interference in the stipulated time before obtaining activation signal, notification unit 246 is logical to user via output section 25
Know the meaning.Notification unit 246 makes alarm equipment alarm, lights lamp, or mistake occurs for display.
Summarily illustrate the processing of location of workpiece detection based on Fig. 3 and Fig. 4.Fig. 3 shows the state that interference is not present, Fig. 4
State in the presence of interference is shown.The dotted line of Fig. 3 and Fig. 4 shows the period for obtaining activation signal.
Probe 10 carries out contact detection during the fixed constant speed movement of speed, issues the detection letter for indicating detection result
Number.The activation signal obtained based on detectable signal is sent main body 20 by probe 10, and storage unit 26 is stored in temporal sequence.
When workpiece W and probe 10 are contacted, the activation signal of " 1 " is sent main body 20 by probe 10.It is not contacted in workpiece W with probe 10
When, the activation signal of " 0 " is sent main body 20 by probe 10.Storage unit 26 stores indicate whether to detect interference in temporal sequence
Interference signal.
The Workpiece detecting device 100 of embodiment 1 periodically obtains activation signal from storage unit 26, and determines contact letter
It number whether is " 1 ".When activation signal is " 1 ", determine whether to exist within the stipulated time before obtaining the activation signal dry
It disturbs.That is, the value for confirming the interference signal in the stipulated time before obtaining the activation signal is " 0 " or " 1 ".
When the value of interference signal is " 0 " (referring to the hachure part of Fig. 3), the rule before obtaining the activation signal are indicated
There is no interference in fixing time.When probe 10 detects the contact of workpiece W, since there is no interference, therefore result of that probe
It is accurate.Therefore, the rotation position of servo motor when coordinate determination section 244 is based on acquisition activation signal, to determine workpiece W
Coordinate.
When the value of interference signal is " 1 " (referring to the hachure part of Fig. 4), the rule before obtaining the activation signal are indicated
It fixes time interior in the presence of interference.When probe 10 detects the contact of workpiece W, interfered due to existing, result of that probe has can
It can inaccuracy.Therefore, invalid portion 245 keeps the activation signal got invalid.
It is illustrated based on processing of the Fig. 5 to the location of workpiece detection of embodiment 1.
CPU 241 indicates that Interference Detection portion 22 carries out Interference Detection, so that Interference Detection portion 22 starts Interference Detection (step
S101).Then, CPU 241 starts contact detection (step S102).The instruction of CPU 241 probe 10 starts to carry out contact detection, visits
First 10 1 edge X-axis, Y-axis or Z-direction be mobile detect on one side whether there is or not with the contact of workpiece W.CPU 241 indicates that timing unit (saves
Sketch map shows) timing is carried out, determine whether have passed through a cycle (125 μ s) (step based on the timing result of timing unit
S103).CPU 241 repeats the judgement until passing through one when being determined as not by a cycle (step S103: no (NO))
Until a period.
When CPU 241 is judged to have passed through a cycle (step S103: being (YES)), CPU 241 indicates acquisition unit
242 read activation signal (step S104) from storage unit 26.CPU 241 determines whether to exist to be connect with the contact of workpiece W, i.e. acquisition
Whether the value for touching signal is " 1 " (step S105).(the step when the value for being judged to obtaining activation signal is not " 1 " of CPU 241
S105: no), make that processing returns to step S103.(the step when the value for being judged to obtaining activation signal is " 1 " of CPU 241
S105: yes), so that contact detection is temporarily stopped (step S106), probe 10 stops.
Then, CPU 241 indicates that determining interference portion 243 is determined that determining interference portion 243 determines whether to connect to acquisition
A cycle before touching signal is obtained is interior in the presence of interference (step S107).It is determined as in determining interference portion 243 to obtaining
There is no (step S107: no) when interference, CPU 241 to indicate that coordinate is determined in a cycle before taking activation signal to be obtained
Determine the coordinate that portion 244 determines workpiece W, coordinate determination section 244 determines workpiece W in X-axis, Y based on the rotation position of servo motor
Coordinate (step S108) on axis or Z axis.
It is determined as there is interference in a cycle obtained before activation signal obtains in determining interference portion 243
When (step S107: yes), CPU 241 indicate invalid portion 245 make obtain activation signal it is invalid, invalid portion 245 make obtain contact letter
Number, i.e., the activation signal got in step S104 is invalid (step S109).CPU 241 indicate notification unit 246 to user into
Row notice, notification unit 246 inform the user the meaning (step S110) in the presence of interference via output section 25.
The Workpiece detecting device 100 of present embodiment is not limited to above record.It is invalid to be also possible in step S109
Portion 245 make to obtain activation signal it is invalid when, CPU 241 makes that processing returns to step S102.That is, being also possible in invalid portion 245
When keeping the activation signal got invalid, contact detection is carried out again.
As described above, in the Workpiece detecting device of present embodiment 100, even if being detected and workpiece W in probe 10
When contact, if there is interference within the stipulated time before this, detection result is also considered as the detection result of inaccuracy and is set
It is invalid.Therefore, it can be improved the precision of location of workpiece detection.
(embodiment 2)
As shown in Figure 6, the data processing division 24 of the Workpiece detecting device 100 of embodiment 2 has in the same manner as embodiment 1
There are CPU 241, acquisition unit 242, determining interference portion 243, coordinate determination section 244, invalid portion 245 and notification unit 246.At data
Reason portion 24 also has speed changing portion 247.CPU 241, acquisition unit 242, determining interference portion 243, coordinate determination section 244, invalid portion 245
And notification unit 246 is identical as embodiment 1, and the description is omitted.
When determining interference portion 243 is judged to there is interference within the stipulated time before when activation signal obtains, speed change
The movement speed of probe 10 in the change contact detection of portion 247.That is, the movement speed of the change of speed changing portion 247 probe 10, change are driven
The torque of the drive motor of dynamic probe 10.The reason is that there are Interference Detection portions 22 when the reduction of the torque of drive motor about whether there is or not dry
The case where judgement result disturbed changes.Speed changing portion 247 controls the servo amplifier of driving mechanism 23, visits to change
First 10 movement speed.
It is detected in the prescribed limit and changes probe with speed changing portion 247 after the contact of workpiece W (contact detects)
When 10 movement speed, probe 10 executes contact detection again in the prescribed limit.That is, in the example of fig. 5, in step
After S109, the movement speed of the change of speed changing portion 247 probe 10, and make that processing returns to step S102.
As described above, in the Workpiece detecting device of present embodiment 100, even if being detected and workpiece W in probe 10
In the case where contact, change the movement speed of probe 10 when also there is interference within the stipulated time before this to be contacted again
Detection.Therefore, Workpiece detecting device 100 can be improved the precision of location of workpiece detection.
(embodiment 3)
The data processing division 24 of the Workpiece detecting device 100 of embodiment 3 the same as that of the second embodiment have CPU 241,
Acquisition unit 242, determining interference portion 243, coordinate determination section 244, invalid portion 245, notification unit 246 and speed changing portion 247.CPU
241, acquisition unit 242, determining interference portion 243, coordinate determination section 244, invalid portion 245, notification unit 246 and speed changing portion 247 with
Embodiment 1,2 is identical, and and the description is omitted.
In the Workpiece detecting device 100 of embodiment 3, the movement speed of the probe 10 when changing contact detection
When, determining interference portion 243 determines whether to have interference from before the stipulated time.
For example, within the stipulated time before when determining interference portion 243 is determined as in activation signal acquisition (such as a week
In phase) there are when interference, speed changing portion 247 changes the movement speed of probe 10.After, when carrying out contact detection again, interference
Determination unit 243 determines from the stipulated time, i.e., risen before a cycle have it is noiseless.That is, the movement speed in probe 10 becomes
When fast (such as 500mm/sec), the 10 vibration/deformation of contact pilotage 3 of popping one's head in becomes larger.Therefore, determining interference portion 243 determines whether
Three cycle memories before obtaining activation signal are interfering.At this point, only, the value of interference signal is all in a period of three periods
When for " 1 ", determining interference portion 243 is determined to have interference.
Pop one's head in 10 movement speed it is slack-off when (such as 50mm/sec), the 10 vibration/deformation of contact pilotage 3 of popping one's head in becomes smaller.
Therefore, determining interference portion 243 is also possible to determine whether to obtain in activation signal in the same manner as before the variation of the movement speed of probe 10
There is the structure of interference in a cycle before when taking.
As described above, it in the Workpiece detecting device of present embodiment 100, is connect even if probe 10 is detected with workpiece W
Touching changes the movement speed of probe 10 when also there is interference within the stipulated time before this to carry out contact detection again.Interference
Determination unit 243 determines whether to have interference from before the stipulated time.Therefore, Workpiece detecting device 100 has and can mention
The effect of the precision of high workpiece position detection.
Above-mentioned acquisition unit 242, determining interference portion 243, coordinate determination section 244, invalid portion 245, notification unit 246 and change
Fast portion 247 can be constituted based on hardware logic, can also be by executing regulated procedure by CPU 241 come with software mode structure
At.
(embodiment 4)
It as shown in Figure 7, also can be via I/F 27 from portable recording mediums A such as USB (universal serial bus) memories
The computer program for being acted is provided to the Workpiece detecting device 100 of embodiment 4.Also, the work of present embodiment
Part detection device 100 also can download the computer program from external device (ED) (illustration omitted) via communication unit 21.Hereinafter, right
Its content is illustrated.To similarly partially added with embodiment 1 it is identical label and omit the description.
Workpiece detecting device 100 can also have the recording medium reading device (illustration omitted) of external (or built-in).Note
Recording medium reading device obtains the activation signal, when the activation signal got indicates to have the contact with workpiece, determines
Whether interference there is within the stipulated time before this.The portable note that insertion has program recorded thereon etc. in recording medium reading device
Recording medium A, so that the program is installed in ROM (illustration omitted) by CPU 241, the program be for the result based on judgement come
Determine the program of the coordinate of the workpiece.The program is loaded into RAM (illustration omitted) and is executed by CPU 241.
The recording medium can be program medium, be also possible to the band such as tape and cassette tape class, floppy disk and hard disk etc.
Cards classes such as the disk classes of the CDs such as disk and CD-ROM/MO/MD/DVD, IC card (including storage card)/light-card or including by covering
The medium for fixedly carrying program code of the semiconductor memory of the compositions such as mould ROM, EPROM, EEPROM, flash ROM.
Claims (7)
1. a kind of Workpiece detecting device (100), has: probe (10) detects that whether there is or not connect with workpiece (W) within the specified scope
Touching, and issue the activation signal for indicating detection result；And coordinate determination section (244), the contact issued based on the probe
Signal determines the coordinate of the workpiece,
The Workpiece detecting device is also equipped with:
Interference Detection portion (22) detects whether there is interference；And
Determining interference portion (243), it is described when the probe has issued expression and exists with the activation signal of the contact of the workpiece
Determining interference portion (243) determines whether that the Interference Detection portion detects within the stipulated time before issuing the activation signal and deposits
It is interfering,
Wherein, the coordinate determination section determines the coordinate of the workpiece based on the judgement result in the determining interference portion.
2. Workpiece detecting device according to claim 1, which is characterized in that
Drive motor (23) are also equipped with, which drives the probe,
The interference includes the load of the drive motor.
3. Workpiece detecting device according to claim 1, which is characterized in that
Invalid portion (245) are also equipped with, are determined as the stipulated time before issuing the activation signal in the determining interference portion
When the interior Interference Detection portion detects the presence of interference, which keeps the activation signal got invalid.
4. Workpiece detecting device according to claim 2, which is characterized in that
Invalid portion (245) are also equipped with, are determined as the stipulated time before issuing the activation signal in the determining interference portion
When the interior Interference Detection portion detects the presence of interference, which keeps the activation signal got invalid.
5. Workpiece detecting device described according to claim 1~any one of 4, which is characterized in that
Speed changing portion (247) are also equipped with, are determined as the stipulated time before issuing the activation signal in the determining interference portion
When the interior Interference Detection portion detects the presence of interference, which changes the movement speed of the probe,
When the speed changing portion changes the movement speed of the probe, the probe carries out the institute in the prescribed limit again
State detection.
6. Workpiece detecting device according to claim 5, which is characterized in that
When the speed changing portion changes the movement speed of the probe, the determining interference portion determines whether than the regulation
The time time memory of length is interfering.
7. a kind of workpiece inspection method detects the position of workpiece (W) for Workpiece detecting device, the Workpiece detecting device
Have: probe (10), detect within the specified scope whether there is or not with the contact of the workpiece, and issue indicate detection result contact
Signal；And coordinate determination section (244), the coordinate of the workpiece is determined based on the activation signal that the probe is issued,
In the workpiece inspection method,
The Workpiece detecting device is also equipped with Interference Detection portion (22), which detects whether there is interference,
The workpiece inspection method the following steps are included:
Determining interference step, when the probe has issued expression and exists with the activation signal of the contact of the workpiece, judgement is
The Interference Detection portion detects the presence of interference in the no stipulated time before issuing the activation signal；And
Based on the judgement in the determining interference step as a result, the coordinate to determine the workpiece.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-167816 | 2017-08-31 | ||
| JP2017167816A JP6834854B2 (en) | 2017-08-31 | 2017-08-31 | Work detection device, work detection method and computer program |
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| Publication Number | Publication Date |
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| CN109420933A true CN109420933A (en) | 2019-03-05 |
| CN109420933B CN109420933B (en) | 2021-03-26 |
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| CN201810974336.6A Active CN109420933B (en) | 2017-08-31 | 2018-08-24 | Workpiece detection device and workpiece detection method |
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| CN112050765A (en) * | 2019-06-07 | 2020-12-08 | 株式会社三丰 | Measuring probe failure determination unit and failure determination method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050765A (en) * | 2019-06-07 | 2020-12-08 | 株式会社三丰 | Measuring probe failure determination unit and failure determination method thereof |
| CN112050765B (en) * | 2019-06-07 | 2022-05-27 | 株式会社三丰 | Measuring probe failure determination unit and failure determination method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6834854B2 (en) | 2021-02-24 |
| CN109420933B (en) | 2021-03-26 |
| JP2019045269A (en) | 2019-03-22 |
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