CN105033703A - Automatic flat tongs for numerical control machining center - Google Patents

Automatic flat tongs for numerical control machining center Download PDF

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Publication number
CN105033703A
CN105033703A CN201510506331.7A CN201510506331A CN105033703A CN 105033703 A CN105033703 A CN 105033703A CN 201510506331 A CN201510506331 A CN 201510506331A CN 105033703 A CN105033703 A CN 105033703A
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CN
China
Prior art keywords
clamping
workpiece
control
servomotor
base
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
Application number
CN201510506331.7A
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Chinese (zh)
Inventor
李晨
方世杰
刘保罗
张换龙
郭恒川
胡波
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.)
Luoyang Institute of Science and Technology
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Luoyang Institute of Science and Technology
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Filing date
Publication date
Application filed by Luoyang Institute of Science and Technology filed Critical Luoyang Institute of Science and Technology
Priority to CN201510506331.7A priority Critical patent/CN105033703A/en
Publication of CN105033703A publication Critical patent/CN105033703A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06Work-clamping means
    • B23Q3/066Bench vices

Abstract

Automatic flat tongs for a numerical control machining center comprise a base, a fixed jaw, a movable jaw, a clamping lead screw, a servo motor and a control system. A sliding groove is formed in the base. The fixed jaw is fixedly arranged at one end of the base. The movable jaw is clamped in the sliding groove of the base through a protrusion at the lower end. The clamping lead screw is connected with the movable jaw through threads and is in transmission connection with the servo motor. The servo motor is electrically connected with the control system. The control system is provided with input equipment, a memorizer and a central processing unit, wherein the input equipment is used for inputting information of a workpiece to be machined and a control command, the memorizer is used for storing the clamping amount relevant to the workpiece to be machined, and the central processing unit is used for controlling the servo motor to run. The central processing unit is electrically connected with the input equipment and the memorizer, and used for reading the corresponding clamping amount from the memorizer according to the input information of the workpiece to be machined, and therefore the servo motor is controlled to run. The technical problems that manual clamping and loosening speed is low, clamping force is controlled inaccurately, and the reject ratio of products is high can be effectively solved.

Description

A kind of numerical control machining center automatic port flattening clamps
Technical field
The present invention relates to numerical control machine tool clamp field, be specifically related to a kind of numerical control machining center automatic port flattening and clamp.
Background technology
Flat-nose pliers is a kind of universal fixturing, for clamping miniature workpiece on numerical control machining center.It is the random annex of numerical control machining center.The using method of flat-nose pliers is, is fixed on platen, uses spanner rotational lead screw, drives movable vise body to move by feed screw nut, thus presss from both sides with pine workpiece enforcement clamping.The flat-nose pliers of current numerical control machining center generally adopts frame for movement, operating personnel's manual operations.Between the high-speed automated and low speed craftization of the artificial clamping of flat-nose pliers of this numerical control machining center processing, efficiency is not seriously mated, and greatly hinders the raising of production efficiency.
At present, the part blank of numerical control machining center needs by the artificial clamping of operating personnel.Part blank, once clamping, is namely realized automatically controlling, without the need to human intervention according to worked out program by numerical control machining center.But owing to adopting artificial installation way, not only clamping, loose folder speed are slow, an important problem is also had to be exactly that clamping force cannot realize accurate control.Especially for thin-walled parts, clamping force directly affects the quality of product, and the clamping force of part by virtue of experience controls by operating personnel completely at present.Part blank is in clamping process, and when clamping force is less, adds man-hour part and there will be loosening phenomenon, Product Precision off-gage phenomenon is serious, even occurs large quantities of waste product; But once clamping force is excessive, often cause blank deflection excessive.Due to the die cavity part of product thin-walled often, so flat-nose pliers is when pine is pressed from both sides, and the part processed can produce rebound phenomenon, cause part deformation, serious dimensional accuracy overproof, even scrap.Because the part of numerical control machining center processing is all the part that precision is higher, therefore the improper meeting of the control of clamping force causes a large amount of waste products.Therefore the flat-nose pliers in the urgent need to a kind of automation replaces existing mechanical type flat-nose pliers.
Summary of the invention
The object of the present invention is to provide a kind of numerical control machining center automatic port flattening to clamp, this automatic port flattening pincers can effectively be enhanced productivity and product percent of pass.
For solving the problems of the technologies described above, the basic conception of the technical solution adopted in the present invention is: a kind of numerical control machining center automatic port flattening clamps, comprise base, regular jaw, moving jaw, clamping leading screw, servomotor and control system, base is provided with chute, regular jaw is fixedly installed on one end of base, moving jaw is fastened in the chute of base by the projection of lower end, clamping leading screw and moving jaw are threaded connection, one end of clamping leading screw is connected with the rotating shaft transmission of servomotor by shaft coupling, servomotor is electrically connected with control system, described control system is provided with the input equipment for inputting workpiece to be processed information and control command, for store the clamping amount be associated with workpiece to be processed memory and for controlling the central processing unit that servomotor operates, described central processing unit is electrically connected with input equipment and memory, and from memory, read clamping amount corresponding with it according to the workpiece to be processed information of input, thus control servomotor running.
Further improvement, described workpiece to be processed information is the code that workpiece title or workpiece are corresponding.
Further improvement, the displacement when clamping amount stored in described memory is moving jaw clamping or the clamping force preset value after clamping.
Further improvement, central processing unit control servomotor operate the process of carrying out clamping comprise quick mobile phase from initial position to workpiece movable that drive moving jaw from and to Workpiece clamping until reach the clamping phase setting clamping amount, servomotor is greater than clamping phase in quick mobile phase running speed.
Beneficial effect:
The present invention adopts control system to control clamping distance, more convenient than Artificial Control, time saving and energy saving.Effectively can solve artificial clamping, loose folder speed is slow, clamping force control inaccuracy, product disqualification rate high-technology problem.After adopting the present invention, production efficiency raises the efficiency about 8 times than hand flat-nose pliers; Percent defective is reduced to 1.2 ‰ from original 5.3%.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cross-sectional schematic in A-A direction in Fig. 1;
Mark in figure: 1, workpiece to be processed, 2, regular jaw, 3, moving jaw, 301, protruding, 4, clamping leading screw, 5, base, 501, chute, 6, shaft coupling, 7, servomotor, 8, control system.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As figure, a kind of numerical control machining center automatic port flattening clamps, comprise base 5, regular jaw 2, moving jaw 3, clamping leading screw 4, servomotor 7 and control system 8, base 5 is provided with chute 501, regular jaw 2 is fixedly installed on one end of base 5, moving jaw 3 is fastened in the chute 501 of base 5 by the projection 301 of lower end, clamping leading screw 4 is threaded connection with moving jaw 3, one end of clamping leading screw 4 is connected with the rotating shaft transmission of servomotor 7 by shaft coupling 6, servomotor 7 is electrically connected with control system 8, described control system 8 is provided with the input equipment of workpiece information for inputting workpiece to be processed (workpiece title or code corresponding to workpiece) and control command (comprising clamping order and the order of pine folder), for store the clamping amount (displacement when moving jaw 3 clamps or the clamping force preset value after clamping) be associated with workpiece to be processed memory and for controlling the central processing unit that servomotor 7 operates, described central processing unit is electrically connected with input equipment and memory.The database be made up of the workpiece information of various conventional workpiece to be processed and the clamping amount of correspondence thereof is stored in memory, when clamping or pine folder, in workpiece information or the order of pine folder of input equipment input workpiece to be processed 1, from the database of memory, clamping amount corresponding is with it read according to the workpiece information of the workpiece to be processed 1 of input by central processing unit, and read clamping amount is converted into electric impulse signal, then described electric impulse signal is outputted to servomotor 7 thus control servomotor 7 and operate, servomotor 7 drives clamping leading screw 4 to rotate by shaft coupling, clamping leading screw 4 rotates and moving jaw 3 is moved along chute 501, complete clamping or loose clip process.Central processing unit control servomotor 7 operate the process of carrying out clamping comprise quick mobile phase from initial position to workpiece movable that drive moving jaw 3 from and to Workpiece clamping until reach the clamping phase setting clamping amount, servomotor 7 is greater than clamping phase in quick mobile phase running speed.Move to fast close to workpiece to increase work efficiency from initial position at quick mobile phase moving jaw 3, simultaneously in order to prevent inertia motion from causing workpiece to be processed 1 to be out of shape and obtain best clamping accuracy, one section is arranged for the clamping phase slowed down or cushion after quick mobile phase, slow down rapidly in clamping phase moving jaw 3 movement velocity, then to move at a slow speed clamping workpiece to be processed 1.When clamping amount is moving jaw 3 displacement, the distance of described quick mobile phase and clamping phase and described clamping amount or can arrange preset value to control by design calculation formula in central processing unit, also can control by arranging distance-sensor (attached not shown) on regular jaw 2 or moving jaw 3, the distance of described quick mobile phase and clamping phase can also control by arranging speed probe (attached not shown); When clamping amount is clamping force, the distance of described quick mobile phase and clamping phase and described clamping amount can by arranging preset value to control in central processing unit, clamping amount can also control by arranging force cell (attached not shown) on regular jaw 2 or moving jaw 3, and distance-sensor or speed probe or force cell are electrically connected with central processing unit.Central processing unit control servomotor 7 running carry out pine folder process comprise the stage of backhaul at a slow speed and quick return stage, backhaul stage action jaw 3 slowly leaves the workpiece having completed processing at a slow speed, afterwards quick return to clamping before initial position.
The database of the clamping amount be associated with workpiece information that is workpiece to be processed that is that store in memory described in embodiment obtains by following steps:
Step one, by veteran workman, repeatedly duplicate measurements is done to various conventional workpiece and tests, accurately measure various Workpiece clamping degree best time clamping force (omitting step 2 when clamping amount is clamping force);
Step 2, by the functional relation between elastic deformation amount and clamping force, obtain the numerical value of elastic deformation amount, calculate the displacement (comprising the distance of the Distance geometry clamping phase of quick mobile phase) when moving jaw 3 clamps further.
Step 3, building database, the wherein workpiece information of workpiece to be processed 1 and the clamping amount one_to_one corresponding of this workpiece.
Above content is the further description done the present invention in conjunction with concrete preferred embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, under the prerequisite not departing from central scope of the present invention, just make simple replacement or deduction, all should be considered as the determined scope of patent protection of claim that the present invention submits to.

Claims (4)

1. a numerical control machining center automatic port flattening clamps, it is characterized in that: comprise base (5), regular jaw (2), moving jaw (3), clamping leading screw (4), servomotor (7) and control system (8), base (5) is provided with chute (501), regular jaw (2) is fixedly installed on one end of base (5), moving jaw (3) is fastened in the chute (501) of base (5) by the projection (301) of lower end, clamping leading screw (4) and moving jaw (3) are threaded connection, one end of clamping leading screw (4) is connected with the rotating shaft transmission of servomotor (7) by shaft coupling (6), servomotor (7) is electrically connected with control system (8), described control system (8) is provided with the input equipment for inputting workpiece to be processed information and control command, for store the clamping amount be associated with workpiece to be processed memory and for controlling the central processing unit that servomotor (7) operates, described central processing unit is electrically connected with input equipment and memory, and from memory, read clamping amount corresponding with it according to the workpiece to be processed information of input, thus control servomotor (7) running.
2. a kind of numerical control machining center automatic port flattening according to claim 1 clamps, and it is characterized in that: described workpiece to be processed information is the code that workpiece title or workpiece are corresponding.
3. a kind of numerical control machining center automatic port flattening according to claim 1 clamps, and it is characterized in that: the displacement when clamping amount stored in described memory is moving jaw (3) clamping or the clamping force preset value after clamping.
4. a kind of numerical control machining center automatic port flattening according to claim 1 clamps, it is characterized in that: central processing unit control servomotor (7) operate the process of carrying out clamping comprise quick mobile phase from initial position to workpiece movable that drive moving jaw (3) from and to Workpiece clamping until reach the clamping phase setting clamping amount, servomotor (7) is greater than clamping phase in quick mobile phase running speed.
CN201510506331.7A 2015-08-18 2015-08-18 Automatic flat tongs for numerical control machining center Pending CN105033703A (en)

Priority Applications (1)

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CN201510506331.7A CN105033703A (en) 2015-08-18 2015-08-18 Automatic flat tongs for numerical control machining center

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106312634A (en) * 2016-11-27 2017-01-11 洛阳丰泰铝业有限公司 Aluminum-wood composite door and window cutting clamping device
CN107160197A (en) * 2017-05-31 2017-09-15 珠海市隆润企业有限公司 A kind of Digit Control Machine Tool programmed control electric flat bit tongs device
CN110695734A (en) * 2019-11-06 2020-01-17 佛山市普拉迪数控科技有限公司 Frock clamp and processing equipment
CN112453961A (en) * 2020-11-26 2021-03-09 佛山市高明区高级技工学校 Automatic flat tongs and control method thereof

Citations (9)

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Publication number Priority date Publication date Assignee Title
CN2241042Y (en) * 1994-11-21 1996-11-27 张士金 Electric plain vice
CN101693298A (en) * 2009-10-13 2010-04-14 潘吕建 Automatic edge turning chamfering machine
CN101972937A (en) * 2010-10-25 2011-02-16 谢振杨 Clamping device for processing cross axle
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CN202825252U (en) * 2012-06-07 2013-03-27 肇庆市高讯数控设备有限公司 Numerical control processing machine automatic clamping system
CN202964439U (en) * 2012-12-21 2013-06-05 燕金华 Rapid electrodynamic type bench clamp
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EP2871026A1 (en) * 2013-11-06 2015-05-13 Vertex Machinery Works Co., Ltd. Vise capable of linear and rotational movement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2241042Y (en) * 1994-11-21 1996-11-27 张士金 Electric plain vice
CN101987374A (en) * 2009-07-30 2011-03-23 盐城市超越组合机床有限公司 Special milling NC (numerical control) fixture machine tool of ledge
CN101693298A (en) * 2009-10-13 2010-04-14 潘吕建 Automatic edge turning chamfering machine
CN101972937A (en) * 2010-10-25 2011-02-16 谢振杨 Clamping device for processing cross axle
CN202825252U (en) * 2012-06-07 2013-03-27 肇庆市高讯数控设备有限公司 Numerical control processing machine automatic clamping system
CN102941543A (en) * 2012-11-15 2013-02-27 无锡中亚工具厂 Intelligent control precise flat tongs
CN202964439U (en) * 2012-12-21 2013-06-05 燕金华 Rapid electrodynamic type bench clamp
CN104440211A (en) * 2013-09-24 2015-03-25 西安众智惠泽光电科技有限公司 Automatic clamping device for columnar workpieces
EP2871026A1 (en) * 2013-11-06 2015-05-13 Vertex Machinery Works Co., Ltd. Vise capable of linear and rotational movement

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106312634A (en) * 2016-11-27 2017-01-11 洛阳丰泰铝业有限公司 Aluminum-wood composite door and window cutting clamping device
CN107160197A (en) * 2017-05-31 2017-09-15 珠海市隆润企业有限公司 A kind of Digit Control Machine Tool programmed control electric flat bit tongs device
CN110695734A (en) * 2019-11-06 2020-01-17 佛山市普拉迪数控科技有限公司 Frock clamp and processing equipment
CN112453961A (en) * 2020-11-26 2021-03-09 佛山市高明区高级技工学校 Automatic flat tongs and control method thereof

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