CN109981096A - Non-contact switch and grasping system - Google Patents
Non-contact switch and grasping system Download PDFInfo
- Publication number
- CN109981096A CN109981096A CN201811609740.XA CN201811609740A CN109981096A CN 109981096 A CN109981096 A CN 109981096A CN 201811609740 A CN201811609740 A CN 201811609740A CN 109981096 A CN109981096 A CN 109981096A
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- CN
- China
- Prior art keywords
- detection
- circuit
- contact switch
- output
- pull rod
- 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.)
- Pending
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Classifications
-
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9505—Constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9517—Proximity switches using a magnetic detector using galvanomagnetic devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Gripping On Spindles (AREA)
- Electronic Switches (AREA)
Abstract
The present invention can be detected to block locating for body is detected in detection zone.The present invention provides a kind of non-contact switch and grasping system, the non-contact switch have: detection is with coil (101)；Oscillating circuit (104) is vibrated and detection coil (101) is made to generate high frequency magnetic field；Detecting circuit (105) carries out detection to the amplitude of the oscillation of oscillating circuit (104)；The amplitude obtained through detecting circuit (105) detection is compared by comparison circuit (106) respectively with multiple threshold values；And output circuit (107), its comparison result with multiple threshold values obtained according to comparison circuit (106), distinguish output signal, which indicates the amplitude obtained through detecting circuit (105) detection whether in the multiple output areas being made of multiple threshold value.
Description
Technical field
The present invention relates to it is a kind of can to detected in detection zone the non-contact switch that is detected of block locating for body with
And the grasping system using the non-contact switch.
Background technique
All the time, it is known to be able to use 1 threshold value the presence or absence of the detection body in detection zone is detected it is non-
Touch switch.However, since threshold value is 1, detection body can not be located at by existing in previous non-contact switch
Which block in detection zone carries out detecting this problem.
On the other hand, it is known that in the past output with to the displacement sensor for detecting corresponding voltage at a distance from body, can be with
(such as referenced patent document 1) is detected by position of the displacement sensor to detection body.However, the displacement sensor is
Therefore simulation output additionally needs AI (simulation input) card for receiving simulation output or AD (analog to digital) converter etc. and sets
It is standby, there are problems that cost increases this.
[existing technical literature]
[patent document]
[patent document 1] Japanese Patent Laid-Open 2000-354939 bulletin
Summary of the invention
[problems to be solved by the invention]
As described above, previous non-contact switch can not be detected to block locating for body is detected in detection zone,
In addition, previous displacement sensor additionally needs the equipment for simulation output and there are problems that cost and increase this.
The present invention be in order to solve the problems, such as it is as described above form, its purpose is to provide it is a kind of can be with cheap composition pair
The non-contact switch that block locating for detection body is detected in detection zone.
[technical means to solve problem]
Non-contact switch of the invention is characterized in that having: coil is used in detection；Oscillating circuit, vibrated and
Detection coil is set to generate high frequency magnetic field；Detecting circuit carries out detection to the amplitude of the oscillation of oscillating circuit；Comparison circuit,
The amplitude obtained through detecting circuit detection and multiple threshold values are compared by it respectively；And output circuit, according to more electric
The comparison result with multiple threshold values that rood arrives, to distinguish output signal, which indicates the vibration obtained through detecting circuit detection
Width whether the signal in the multiple output areas being made of multiple threshold value.
[The effect of invention]
It according to the present invention, can be with cheap composition to detection body institute in detection zone due to constituting in the above described manner
The block at place is detected.
Detailed description of the invention
Fig. 1 is the circuit diagram for indicating the configuration example of non-contact switch involved in embodiments of the present invention 1.
Fig. 2A is the position for indicating detection body and 2 output possessed by the output circuit in embodiments of the present invention 1
The figure of an example of the corresponding relationship of the output of terminal, Fig. 2 B are to indicate to will test region segmentation into the area in the case where 4 blocks
The figure of an example of the detection method of block.
Fig. 3 is the figure for indicating the configuration example of grasping system involved in embodiments of the present invention 1.
Fig. 4 A is an example of the relationship of tapering and non-contact switch possessed by the pull rod that indicates in embodiments of the present invention 1
Figure, Fig. 4 B is the relationship of amplitude Vo for indicating the position s of pull rod and the detecting circuit detection through non-contact switch and obtaining
The figure of an example.
Specific embodiment
In the following, referring to attached drawing on one side, detailed description of embodiments of the present invention on one side.
Embodiment 1.
Fig. 1 is the circuit diagram for indicating the configuration example of non-contact switch 1 involved in embodiments of the present invention 1.
Non-contact switch 1 is able to use multiple threshold values to examining in the presence or absence of detection body 2 in detection zone and detection zone
Block locating for body 2 is surveyed to be detected.Detection body 2 is made of metal object.In addition, being to show output circuit described later below
The case where 107 2 output area (the 1st output area and the 2nd output areas) of use.As shown in Figure 1, the non-contact switch 1
Have detection coil 101, power supply 102, stabilized power supply circuit 103, oscillating circuit 104, detecting circuit 105, comparison circuit
106, output circuit 107 and the transistor of 2 systems 108 (transistor 108a and transistor 108b).In addition, contactless open
Close the resistance 3 (resistance 3a and resistance 3b) that 2 systems are connected in 1.
Stabilized power supply circuit 103 is acted by the electric power supplied from power supply 102, to oscillating circuit 104, detection
Circuit 105 and comparison circuit 106 supply the electric power of assigned voltage.
Oscillating circuit 104 is vibrated and detection coil 101 is made to generate high frequency magnetic field.In the oscillating circuit 104, when
When detecting 2 non-contact detection of body high frequency magnetic field caused by coil 101, detects and circulate induced current in body 2 and generate heat
Loss, detection are changed with the impedance of coil 101 and oscillation are decayed.Furthermore even if oscillating circuit 104 is configured to
Detect body 2 utmostly close in the case where also maintain vibrate, amplitude of oscillation according to detection with the impedance variations of coil 101 and
Variation.
Detecting circuit 105 carries out detection to the amplitude of the oscillation of oscillating circuit 104.That is, detecting circuit 105 is by oscillating circuit
The amplitude direct current of 104 oscillation and rectified.
The amplitude obtained through 105 detection of detecting circuit is compared by comparison circuit 106 respectively with each threshold value.Furthermore respectively
Threshold value is for example set by external equipment.
What output circuit 107 was obtained according to comparison circuit 106 indicates to export respectively through examining with the comparison result of each threshold value
The amplitude that 105 detection of wave circuit obtains whether the signal in each output area being made of each threshold value.Specifically, passing through
In the case that the amplitude that 105 detection of detecting circuit obtains is in the 1st output area, output circuit 107 is from 2 output terminals
One side exports Continuity signal.In addition, in the case where the amplitude obtained through 105 detection of detecting circuit is in the 2nd output area, it is defeated
Circuit 107 exports Continuity signal from another party in 2 output terminals out.Furthermore each output area mutually partially repeats.Detection
The position of body 2 is illustrated in Fig. 2A with the one of the corresponding relationship of the output of 2 output terminals possessed by the output circuit 107.
Furthermore in Fig. 2, the state for having Continuity signal from a side (the 1st output) output in 2 output terminals is set as ON, it will
The state for not exporting Continuity signal is set as OFF.In addition, by having conducting from another party (the 2nd output) output in 2 output terminals
The state of signal is set as ON, and the state for not exporting Continuity signal is set as OFF.
The gate terminal of transistor 108a is connected to the side in 2 output terminals possessed by output circuit 107, transmitting
Extreme son is connected to the plus end of power supply 102.Transistor 108a 2 output ends according to possessed by from output circuit 107
The Continuity signal of a side in son drives.
The gate terminal of transistor 108b is connected to another party in 2 output terminals possessed by output circuit 107, emitter
Terminal is connected to the plus end of power supply 102.Transistor 108b 2 output terminals according to possessed by from output circuit 107
In the Continuity signal of another party drive.
Furthermore one end of resistance 3a is connected to the collector terminal of transistor 108a, and the other end is connected to the negative of power supply 102
Terminal.Resistance 3a, which is driven by transistor 108a from power supply 102, obtains the supply of electric power.
In addition, one end of resistance 3b is connected to the collector terminal of transistor 108b, the other end is connected to the negative terminal of power supply 102
Son.Resistance 3b, which is driven by transistor 108b from power supply 102, obtains the supply of electric power.
As the resistance 3a, 3b, such as PLC (Programmable Logic Controller (programmable logic control can be enumerated
Device processed)) or the load such as relay.
Then, by the non-contact switch 1, can according to supply to the electric power of resistance 3a and resistance 3b to detection zone
Block locating for detection body 2 is detected in the presence or absence of interior detection body 2 and detection zone.It is connect non-as shown in FIG. 1
In the case that touch switches 1 have 2 outputs, as shown in Figure 2 B, detection body 2 can be located at and be divided into 4 blocks the (the 1st
Block~the 4th block) detection zone in which block detected.
Non-contact switch 1 shown in FIG. 1 illustrates 2 output areas corresponding to output circuit 107 and is exporting electricity
The case where being provided with 2 output terminals on road 107 and being provided with transistor 108 of 2 systems.On the other hand, contactless
In the case that switch 1 uses 3 or more output areas, quantity identical as the output area is set on output circuit 107
Output terminal, in addition, the system of quantity identical as the output area is arranged in transistor 108.
Then, Fig. 3 is referred on one side, is illustrated on one side to the case where non-contact switch 1 is applied to grasping system.Figure
In 3, as grasping system, the case where illustrating the Implement clamping systems for machining center etc..
As shown in figure 3, Implement clamping systems have tool 4, clamping device 5 and non-contact switch 1.
Tool 4 processes workpiece (not shown) using the cutter 401 of setting at one end.The tool 4 is another
One end is formed with the shank 402 of cone cell, is formed with draw bolt 403 in its end.
The clamping of the progress tool 4 of clamping device 5.The clamping device 5 has main shaft part 501, collet 502 and pull rod 503.
In the axle center of main shaft part 501, it is formed with the insertion section 5011 of the cone cell of the insertion of shank 402 for tool 4 at one end.
In addition, the back segment in insertion section 5011 is formed with the receiving portion 5012 of receiving collet 502 in the axle center of main shaft part 501.The receiving
The diameter of the above-mentioned one end in portion 5012 is configured larger, and the diameter of another side is configured smaller.
Collet 502 at one end have gripper jaw 5021, be opened and closed by the gripper jaw 5021 carry out shank 402 by
It is inserted into the fixation of the draw bolt 403 of the tool 4 in insertion section 5011.The collet 502 can be moved along axis direction, clamped
In the case that pawl 5021 is located at the one end of receiving portion 5012, gripper jaw 5021 opens, and is located at receiving portion in gripper jaw 5021
It is by receiving portion 5012 that gripper jaw 5021 is closed in the case where 5012 another side, it is able to carry out consolidating for draw bolt 403
It is fixed.
Pull rod 503 can be moved along axis direction, be connected with the other end of collet 502 at one end.Also, pull rod 503 passes through
Itself moves along axis direction and moves collet 502 along axis direction, carries out the opening and closing of gripper jaw 5021.That is, pull rod 503
Stop position according to clamping device 5 to the clamp position of tool 4 and it is different.The pull rod 503 is equivalent to above-mentioned detection body 2.This
Outside, pull rod 503 the part opposite with non-contact switch 1 have can be changed by the movement of pull rod 503 with it is non-contact
The tapering 5031 of the distance between formula switch 1.
Non-contact switch 1 shown in Fig. 3 on the direction vertical with the axis direction of pull rod 503 with 503 phase of pull rod
To configuration, block locating for detection zone draw-in bar 503 can be detected.As the block, such as can enumerate comprising empty folder
When pull rod 503 position block, comprising clamping when pull rod 503 position block, comprising clamping failure when pull rod
The block of 503 position and the block of position of pull rod 503 this 4 blocks when comprising unclamping.Furthermore so-called empty folder, meaning
Refer to the closed state of gripper jaw 5021 in the state of no tool 4.In addition, so-called clamping, it is intended that clamping device 5 can be by tool
4 states normally clamped.In addition, so-called clamping failure, it is intended that chip etc. enters to clamping device 5 and fails normally to clamp
The state of tool 4.In addition, so-called release, it is intended that the state that gripper jaw 5021 opens.
Herein, work in-process is in the heart when carrying out the processing to 1 workpiece, be. while replacing various tool 4
It is processed.Therefore, if failing reliably to clamp tool 4 using clamping device 5, the size of workpiece is possible to send out
It gives birth to deviation and generates bad.Therefore, in previous machining center, be configured to using previous multiple non-contact switch or
Single displacement sensor detects the position of pull rod 503, has only clamped tool 4 reliable (normal) in clamping device 5
In the case of implement processing.However, using previous multiple non-contact switch, it is necessary to physically adjust on one side
The configuration of each non-contact switch adjustment on one side becomes the block of test object, this needs technical ability, and the number of working processes will increase.
In addition, additionally needing the AI card for receiving simulation output or converter etc. using previous displacement sensor
Equipment, cost will increase.In addition, the block in machining center as test object only has several places, without using simulation output.
It is using can be in a digital manner in detection zone in contrast, in the Implement clamping systems involved in embodiment 1
The non-contact switch 1 that block locating for pull rod 503 is detected is confirmed whether to have utilized the clamping device 5 tool 4 is reliable
Ground clamping.Thereby, it is possible to be easy to set up non-contact switch 1, the adjustment for becoming the block of test object is simplified.This
Outside, it is able to suppress the increase of cost.
In addition, pull rod 503 moves on the direction vertical with the detection faces of non-contact switch 1.Thus, for example in pull rod
In the case that 503 is cylindrical shapes, non-contact switch 1 can only detect the area opposite with non-contact switch 1 of pull rod 503
Variation.In such a case it is possible to which the region for detecting pull rod 503 using non-contact switch 1 is relatively narrow, exist can not detect it is above-mentioned
The case where 4 blocks.Therefore, Implement clamping systems involved in embodiment 1 are configured to as shown in FIG. 4, in pull rod 503
Upper setting tapering 5031 makes non-contact switch 1 detect the variation of the distance between pull rod 503 and non-contact switch 1.By
This, can use non-contact switch 1 and broaden to detect the region of pull rod 503, so as to detect above-mentioned 4 blocks.Fig. 4 B
In, symbol A~D corresponds to the 1st block~the 4th block.Furthermore the cone angle in tapering 5031 is the length of detection zone as needed
Width of detection faces etc. of degree and non-contact switch 1 is set.
Furthermore the case where above illustrating 5 clamping device 4 of clamping device.But it is not limited to this, for clamping device 5
The case where clamping workpiece equally can also obtain as described above with non-contact switch 1 involved in embodiment 1
Effect.
In addition, the case where above illustrating the Implement clamping systems for machining center etc. is as grasping system.But simultaneously
It is without being limited thereto, as long as being ok using the grasping system of pull rod 503, such as the tool clamping for NC lathe etc. can also be used
System is as grasping system.In this case, the block as segmentation detection zone can enumerate (the pull rod 503 when comprising sky folder
Position block), comprising clamping when pull rod 503 position block and the pull rod 503 when comprising unclamping position
This 2 (3) blocks of block.
As described above, being had according to the embodiment 1: detection coil 101；Oscillating circuit 104, vibrated and
Detection coil 101 is set to generate high frequency magnetic field；Detecting circuit 105 carries out detection to the amplitude of the oscillation of oscillating circuit 104；
The amplitude obtained through 105 detection of detecting circuit is compared by comparison circuit 106 respectively with multiple threshold values；And output electricity
Road 107 obtaining to indicate to export respectively through detecting circuit 105 with multiple threshold values comparison results according to comparison circuit 106
The amplitude that detection obtains whether the signal in the multiple output areas being made of multiple threshold value therefore can be to detection zone
Block locating for interior detection body 2 is detected.
Furthermore the present application can carry out within the scope of the invention embodiment the deformation for being formed arbitrarily element or
The omission for being formed arbitrarily element of person's embodiment.
Symbol description
1 non-contact switch
2 detection bodies
3,3a, 3b resistance
4 tools
5 clamping devices
Coil is used in 101 detections
102 power supplys
103 stabilized power supply circuits
104 oscillating circuits
105 detecting circuits
106 comparison circuits
107 output circuits
108,108a, 108b transistor
401 cutters
402 shanks
403 draw bolts
501 main shaft parts
502 collets
503 pull rods
5011 insertion sections
5012 receiving portions
5021 gripper jaws
5031 taperings.
Claims (3)
1. a kind of non-contact switch, which is characterized in that have:
Coil is used in detection；
Oscillating circuit is vibrated and the detection coil is made to generate high frequency magnetic field；
Detecting circuit carries out detection to the amplitude of the oscillation of the oscillating circuit；
The amplitude obtained through the detecting circuit detection is compared by comparison circuit respectively with multiple threshold values；And
Output circuit, the comparison result with multiple threshold values obtained according to the comparison circuit, to distinguish output signal, the letter
Number indicate the amplitude that obtains through the detecting circuit detection whether in the multiple output areas being made of multiple threshold value.
2. a kind of grasping system, which is characterized in that have:
Pull rod can be moved along axis direction；And
It is described in claim 1 contactless on the direction vertical with the axis direction, with pull rod relative configuration
Switch.
3. grasping system according to claim 2, which is characterized in that
The pull rod the part opposite with the non-contact switch have can be changed by the movement of the pull rod with
The tapering of the distance between the non-contact switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-253667 | 2017-12-28 | ||
| JP2017253667A JP2019121843A (en) | 2017-12-28 | 2017-12-28 | Proximity switch and clamp system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109981096A true CN109981096A (en) | 2019-07-05 |
Family
ID=67076405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811609740.XA Pending CN109981096A (en) | 2017-12-28 | 2018-12-27 | Non-contact switch and grasping system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019121843A (en) |
| CN (1) | CN109981096A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286057A2 (en) * | 1987-04-03 | 1988-10-12 | Omron Tateisi Electronics Co. | Proximity switch having an oscillation circuit |
| JPH06232723A (en) * | 1993-01-29 | 1994-08-19 | Yamatake Honeywell Co Ltd | Proximity switch |
| JPH09238063A (en) * | 1996-02-29 | 1997-09-09 | Omron Corp | Detection switch |
| JP2000354939A (en) * | 1999-06-11 | 2000-12-26 | Mori Seiki Co Ltd | Clamping/unclamping detecting mechanism for main spindle deivce |
| JP2002251945A (en) * | 2001-12-25 | 2002-09-06 | Omron Corp | High frequency oscillation type proximity switch and its production method |
| CN101106039A (en) * | 2006-07-12 | 2008-01-16 | 株式会社东海理化电机制作所 | Non-contact switch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804678B2 (en) * | 1992-05-28 | 1998-09-30 | 三洋電機株式会社 | Photodetector |
| JPH0936729A (en) * | 1995-07-13 | 1997-02-07 | Casio Comput Co Ltd | Semiconductor device |
| JP2006317237A (en) * | 2005-05-11 | 2006-11-24 | Keyence Corp | Multi-optical axis photoelectric safety device |
| JP2016057170A (en) * | 2014-09-10 | 2016-04-21 | 株式会社ハシマ | Operation confirmation method of detection sensor, inspection meter, and test piece |
-
2017
- 2017-12-28 JP JP2017253667A patent/JP2019121843A/en active Pending
-
2018
- 2018-12-27 CN CN201811609740.XA patent/CN109981096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286057A2 (en) * | 1987-04-03 | 1988-10-12 | Omron Tateisi Electronics Co. | Proximity switch having an oscillation circuit |
| JPH06232723A (en) * | 1993-01-29 | 1994-08-19 | Yamatake Honeywell Co Ltd | Proximity switch |
| JPH09238063A (en) * | 1996-02-29 | 1997-09-09 | Omron Corp | Detection switch |
| JP2000354939A (en) * | 1999-06-11 | 2000-12-26 | Mori Seiki Co Ltd | Clamping/unclamping detecting mechanism for main spindle deivce |
| JP2002251945A (en) * | 2001-12-25 | 2002-09-06 | Omron Corp | High frequency oscillation type proximity switch and its production method |
| CN101106039A (en) * | 2006-07-12 | 2008-01-16 | 株式会社东海理化电机制作所 | Non-contact switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019121843A (en) | 2019-07-22 |
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