CN104723170B - A kind of numerical control turret is sought null-setting device and its seeks zero-bit method - Google Patents

A kind of numerical control turret is sought null-setting device and its seeks zero-bit method Download PDF

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Publication number
CN104723170B
CN104723170B CN201510149376.3A CN201510149376A CN104723170B CN 104723170 B CN104723170 B CN 104723170B CN 201510149376 A CN201510149376 A CN 201510149376A CN 104723170 B CN104723170 B CN 104723170B
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China
Prior art keywords
servomotor
knife rest
sensor
null
bit
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CN201510149376.3A
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CN104723170A (en
Inventor
张万谋
臧克宝
吴培坚
申国栋
尹俊海
胡春霞
解美玲
边辉
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YANTAI UNIVERSAL MACHINE TOOL EQUIPMENT Co Ltd
YANTAI HUANQIU MACHINE TOOL FITTINGS GROUP CO Ltd
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YANTAI UNIVERSAL MACHINE TOOL EQUIPMENT Co Ltd
YANTAI HUANQIU MACHINE TOOL FITTINGS GROUP CO Ltd
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Publication of CN104723170A publication Critical patent/CN104723170A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q17/00Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work

Abstract

The invention discloses a kind of numerical control turret is sought null-setting device and its seeks zero-bit method, including:Servomotor, SDPLC drivers, Hydraulic Station and stop tight sensor and release sensor, Hydraulic Station has the solenoid directional control valve being connected with SDPLC drivers, solenoid directional control valve is simultaneously coupled to knife rest, SDPLC internal drives have be provided with monitor, position sensor, the location status memory for being connected to position sensor and the processor for being connected to location status memory, the main shaft of knife rest is provided with and transmits block, knife rest is provided with null pick-up, servomotor drives tool spindle rotation, main shaft drives and transmits block motion triggers null pick-up, null pick-up is connected to position sensor.Null-setting device is sought using numerical control turret in the present invention, and the knife rest with incremental encoder servomotor in the state of fluted disc is stopped tightly is installed motor and directly installation time can be saved, reduce product cost to use.

Description

A kind of numerical control turret is sought null-setting device and its seeks zero-bit method
Technical field
The present invention relates to Digit Control Machine Tool, more particularly to a kind of numerical control turret seeks null-setting device and its method.
Background technology
When numerical control turret with incremental encoder servomotor in prior art, after each power-off, compile Code device does not record the position before power-off, and after powering up every time, it needs to secure a position, (i.e. zero-bit) as a reference point, The position of cutterhead each station of knife rest is can determine that, just can know that how to turn to get to corresponding station, if zero-bit Arranged is not accurate enough, may result in the process that main axis of the servomotor with movable knife rack are completed after coarse positioning, fluted disc is engaged In, under the influence of fluted disc, cause main shaft to rotate, power reverse is transmitted, and should not be had by the generation of gear driven servomotor Rotation, follow-up transposition action may be affected then, or cause motor to be reported to the police, when therefore fluted disc is engaged, sensor is sent out to zero-bit The position of letter proposes higher requirement.Zero-bit was sought in the past, substantially following process:(1) knife rest is first unclamped;(2) handwheel is used The cutterhead of numerical control turret be can be manually rotated to the position for specifying station;(3) knife rest is locked;(4) the fixed spiral shell for transmitting block is unclamped Silk, transmits block until null pick-up is effective along Y-direction movement;(5) and then in the opposite direction movement transmits block, and in zero-bit The position locking of the transition point of sensor signal transmits block;(6) carry out back to zero test again, confirm the correctness of previous action.
So operate, it appears that simple, in fact it is difficult to accomplish, because zero-bit will be ensured when 5 step is executed Sensor is in just triggering state, that is, will ensure null pick-up in just effective state, and so adjustment is got up Difficulty just very big, especially transmit block turning circle very little when, it is difficult to adjust.It was not just to be less than greatly very much The zero-bit of a product usually can not adjusted half a day in position, workman.
Accordingly, it would be desirable to a kind of new technical scheme is solving the above problems.
Content of the invention
Goal of the invention:There is provided and a kind of transmit block zero-bit numerical control turret and seek null-setting device without manually adjusting.
In order to reach goal of the invention, the present invention is employed the following technical solutions:A kind of numerical control turret seeks null-setting device, bag Include:The SDPLC drivers of servomotor and servomotor connection, Hydraulic Station and for judging that knife rest is in stopping tight state also Be releasing orientation stop tight sensor and unclamp sensor, described stop tight sensor and unclamp sensor be connected to the SDPLC There is the solenoid directional control valve being connected with SDPLC drivers, the solenoid directional control valve to be simultaneously coupled to knife rest for driver, Hydraulic Station, The SDPLC internal drives have be provided with monitor for real-time monitoring servomotor load torque, for recording servo The position sensor of motor current location, the location status memory for being connected to position sensor and it is connected to location status and deposits The processor of reservoir, the main shaft of knife rest are provided with and transmit block, and knife rest is provided with null pick-up, and servomotor drives tool spindle rotation Turn, main shaft drives and transmits block motion triggers null pick-up, and null pick-up is connected to position sensor.
Beneficial effect:Null-setting device is sought using numerical control turret in the present invention, with incremental encoder servomotor Knife rest can be in the state of fluted disc be stopped tightly, and installing motor directly can be with use, it is not necessary to go to manually adjust zero-bit, greatly Save installation time, reduce product cost, improve the competitiveness of product in market.
In order to reach goal of the invention, the present invention is further employed the following technical solutions:A kind of use numerical control turret Zero method of seeking of null-setting device is sought, there is the numerical control turret cutterhead, representative transmission gear train, servomotor there is fluted disc, should Seek zero method to comprise the following steps:
First, in a manual mode, the rough rotating cutter-head of servomotor is controlled to the tight tooth of corresponding cutter spacing rear brake by handwheel Disk;
2nd, following procedure is executed by SDPLC drivers:First, it is determined that whether knife rest is in stopping under tight state, if do not had Have, then the prompting needs that report an error are stopped tightly;If it is tight to have stopped, servomotor is controlled to rotate clockwise, while SDPLC internal drives Monitor real-time monitoring servomotor load torque, when load suddenly increase to nominal load 50% when, stop operating, The current location that servomotor is recorded by position sensor is A;Then servomotor is rotated counterclockwise, when load again suddenly Increase to nominal load 50% when stop, the current location B that servomotor is write down by position sensor, at this moment by process Relative zero-bit of the midpoint of device calculating out position A and position B as knife rest;Servomotor is made to go to the midpoint of A and B;
Three and then SDPLC drivers start to execute the operation of automatic seeking zero-bit, allow servomotor to rotate clockwise, then band Dynamic main shaft is rotated along Y-direction, and main shaft drives the position for transmitting that block rotation is located near null pick-up, then triggering zero-bit sensing Device, transmits null pick-up, when being then that null pick-up is just transmitted under SDPLC drive records, servomotor work as Front position, then calculates the angle value X of current location and relative zero-bit;
Four and then by this angle value write PLC, store;
5th, on knife rest during electricity, according to step 3 in rotation mode rotation, find and transmit block and transmit, then corner angle value X, cutterhead returning to knife rest when arrange for the first time zero-bit and stop tight position, then carries out corresponding tool changing action.
Beneficial effect:Zero-bit method is sought using numerical control turret in the present invention, with incremental encoder servomotor Knife rest can be in the state of fluted disc be stopped tightly, and installing motor directly can be with use, it is not necessary to go to manually adjust zero-bit, greatly Save installation time, reduce product cost, improve the competitiveness of product in market.
Description of the drawings
Fig. 1 is the schematic diagram that this numerical control turret seeks null-setting device;
Fig. 2 is the partial schematic diagram that this numerical control turret seeks null-setting device.
Specific embodiment
It is that a kind of numerical control turret seeks null-setting device shown in Fig. 1, including:Servomotor 1 and servomotor connect SDPLC drivers 2, Hydraulic Station 3 and for judging that knife rest is in stop stop tight sensor 4 and the pine of tight state or releasing orientation Drive sensor 5.There is the numerical control turret cutterhead, representative transmission gear train, servomotor there is fluted disc.
Stop and tight sensor 4 and unclamp sensor 5 and be connected to the SDPLC drivers 2, Hydraulic Station 3 has and SDPLC drives The solenoid directional control valve 6 of the connection of device 2.Solenoid directional control valve 6 is simultaneously coupled to numerical control turret, has inside the SDPLC drivers 2 Have and be provided with monitor for 1 load torque of real-time monitoring servomotor, pass for recording the position of servomotor current location Sensor, the location status memory for being connected to position sensor and the processor for being connected to location status memory, knife rest Main shaft is provided with and transmits block 7, and knife rest is provided with null pick-up 8, and servomotor drives tool spindle rotation, main shaft to drive and transmit block Motion triggers null pick-up, null pick-up 8 are connected to position sensor.Aforementioned processor is used for processing aforementioned tight sensing of stopping The solenoid directional control valve of device, release sensor, null pick-up, location status memory, servomotor and Hydraulic Station is passed over Signal.
Using numerical control turret of the present invention seek null-setting device seek zero method, comprise the following steps that:
First, in a manual mode, the rough rotating cutter-head of servomotor is controlled to the tight tooth of corresponding cutter spacing rear brake by handwheel Disk.
2nd, following procedure is executed by SDPLC drivers:First, it is determined that whether knife rest is in stopping under tight state, if do not had Have, then the prompting needs that report an error are stopped tightly;If it is tight to have stopped, control servomotor (refers to that motor turned over 1 ° in 2 seconds with low speed Speed) rotate clockwise, while the load torque of the monitor real-time monitoring servomotor of SDPLC internal drives, works as load Suddenly increase to nominal load 50% when, stop operating, by position sensor record servomotor current location be A; Then servomotor is rotated counterclockwise, and is stopped when load suddenly increases to the 50% of nominal load again, by position sensing The current location B of servomotor write down by device, at this moment calculates the phase of the midpoint as knife rest of out position A and position B by processor To zero-bit;Servomotor is made to go to the midpoint of A and B.It is of course also possible to motor is installed to knife rest in the state of fluted disc is stopped tightly On.
Three and then SDPLC drivers start to execute the operation of automatic seeking zero-bit, and control servomotor is rotated clockwise, then Main shaft is driven to rotate along Y-direction, main shaft drives the position for transmitting that block 7 rotates the close place of null pick-up 8, then triggers zero-bit Sensor 8, transmits null pick-up 8.Then it is servomotor when null pick-up 8 is just transmitted that position sensor is recorded 1 current location, is then calculated the angle value X of current location and relative zero-bit, is switched on the occasion of the inverse time clockwise by processor Pin switchs to negative value.The position A points of servomotor to the angle value of position B points be by total flank of the representative transmission gear train of whole knife rest Gap is formed.
Four and then by this angle value write PLC, store.
5th, on knife rest during electricity, according to step 3 in rotation mode rotation, find and transmit block and transmit, then corner angle value X, cutterhead returning to knife rest when arrange for the first time zero-bit and stop tight position, then carries out corresponding tool changing action.

Claims (5)

1. a kind of numerical control turret seeks null-setting device, including:Servomotor (1) and the SDPLC drivers of servomotor connection (2), Hydraulic Station (3) and for judging that knife rest is tight sensor (4) and to unclamp biography in stopping for stop tight state or releasing orientation Sensor (5), tight sensor and the release sensor stopped are connected to the SDPLC drivers, and Hydraulic Station has and SDPLC drives The solenoid directional control valve (6) of device connection, the solenoid directional control valve are simultaneously coupled to knife rest, it is characterised in that:The SDPLC drivers Inside is provided with the monitor for real-time monitoring servomotor load torque, passes for recording the position of servomotor current location Sensor, the location status memory for being connected to position sensor and the processor for being connected to location status memory, knife rest Main shaft is provided with and transmits block (7), and knife rest is provided with null pick-up (8), and servomotor drives tool spindle rotation, and main shaft drives to be sent out Letter block (7) motion triggers null pick-up (8), null pick-up (8) are connected to position sensor.
2. what the numerical control turret that a kind of usage right requires described in 1 sought null-setting device seeks zero-bit method, the numerical control turret There is knife rest cutterhead, representative transmission gear train, servomotor there is fluted disc, it is characterised in that:This is sought zero-bit method and comprises the following steps:
First, in a manual mode, the rough rotating cutter-head of servomotor is controlled to the tight fluted disc of corresponding cutter spacing rear brake by handwheel;
2nd, following procedure is executed by SDPLC drivers:First, it is determined that whether knife rest is in stop under tight state, if it did not, The prompting needs that then report an error are stopped tightly;If it is tight to have stopped, servomotor is controlled to rotate clockwise, while SDPLC internal drives The load torque of monitor real-time monitoring servomotor, when load suddenly increases to the 50% of nominal load, stops operating, leads to Cross the current location A that position sensor records servomotor;Then servomotor is rotated counterclockwise, when load suddenly increases again To nominal load 50% when stop, the current location B that servomotor is write down by position sensor, at this moment pass through processor meter Calculate the relative zero-bit of the midpoint as knife rest of position A and position B;Servomotor is made to go to the midpoint of position A and position B;
Three and then SDPLC drivers start to execute the operation of automatic seeking zero-bit, allow servomotor to rotate clockwise, and then drive master Axle is rotated along Y-direction, and main shaft is provided with and transmits block, drives block (7) rotation that transmits on main shaft to be located near null pick-up (8) Position, then triggering null pick-up (8), transmit null pick-up (8), then under SDPLC drive records zero-bit pass When sensor (8) is just transmitted, then the current location of servomotor calculates the angle value X of current location and relative zero-bit;
Four and then by this angle value write PLC, store;
5th, on knife rest electricity when, according to step 3 in rotation mode rotation, until transmit block (7) triggering null pick-up (8), Transmit null pick-up (8), then corner angle value X, cutterhead returning to knife rest when arrange for the first time zero-bit and stops tight position, then Carry out corresponding tool changing action.
3. numerical control turret as claimed in claim 2 seek null-setting device seek zero-bit method, it is characterised in that:In fluted disc Servomotor is installed on knife rest in the state of stopping tightly.
4. numerical control turret as claimed in claim 2 or claim 3 seek null-setting device seek zero-bit method, it is characterised in that:Logical Cross SDPLC drivers execute following procedure judge knife rest whether in stop tight state when, if it is tight to have stopped, control servomotor with Low speed is rotated clockwise, and the low speed refers to that motor turned over 1 ° of speed in 2 seconds.
5. numerical control turret as claimed in claim 2 or claim 3 seek null-setting device seek zero-bit method, it is characterised in that:Watch The position A points for taking motor are to be formed by total backlash of the representative transmission gear train of whole knife rest to the angle value of position B points.
CN201510149376.3A 2015-03-31 2015-03-31 A kind of numerical control turret is sought null-setting device and its seeks zero-bit method Active CN104723170B (en)

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CN105397632B (en) * 2015-12-28 2018-09-11 北京中电科电子装备有限公司 A kind of control method and device of air-flotation type rotary table Switch of working position
CN109944838B (en) * 2019-04-09 2020-05-29 鞍钢股份有限公司 Servo valve mechanical zero on-line zero setting method
CN110103015B (en) * 2019-04-28 2020-06-19 西安交通大学 Alignment device for aligning zero position of valve body of multi-path sample injection valve with zero position of grating code disc and use method of alignment device

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JPH1133880A (en) * 1997-07-23 1999-02-09 Okuma Mach Works Ltd Measuring device of nc lathe
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CN101791709B (en) * 2010-02-10 2012-01-11 辽宁西格马数控机床有限公司 Digital servo tool turret controller
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