CN2868543Y - Linear motor feeding system structure - Google Patents

Linear motor feeding system structure Download PDF

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Publication number
CN2868543Y
CN2868543Y CN 200520145892 CN200520145892U CN2868543Y CN 2868543 Y CN2868543 Y CN 2868543Y CN 200520145892 CN200520145892 CN 200520145892 CN 200520145892 U CN200520145892 U CN 200520145892U CN 2868543 Y CN2868543 Y CN 2868543Y
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China
Prior art keywords
feed system
saddle
electric motors
axis
linear electric
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Expired - Lifetime
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CN 200520145892
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Chinese (zh)
Inventor
赵江浩
蒋朝霞
郗景河
陈良义
肖学东
韩麟
韩爱礼
倪帆
李林
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SHENYANG MACHINE TOOLS PLANT NO 1
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SHENYANG MACHINE TOOLS PLANT NO 1
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Priority to CN 200520145892 priority Critical patent/CN2868543Y/en
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Abstract

The utility model belonging to a new feed system structure of the numerical control lathe is provided, in particular to a beeline motor feed system structure. The utility model feed system structure has a guideway locking block, a beeline displacement sensor, an enclosed guard, an anticollision steel blocking structure and a buffer device. The utility model feed system structure is installed on the work plane of inclined placed lathe body and can do beeline motion along Z-axis beeline guideway pair. The X axis beeline roll guideway pair is fixed on the lathe saddle and drives the sliding plate and the knife rest to do the high speed and high acceleration beeline motion in the X axis. The utility model utilizes the beeline motor to replace the traditional ball screw and servo motor feed system structure and will make the mutation of the mechanical structure of the transmission feed system in the machine tool industry and improve the performance indexes such as the processing precision and the production efficiency and so on, adopt the beeline motor technology for domestic numerical control machine tool and implement proving with technology storage for the high feed speed.

Description

A kind of linear electric motors feed system structure
Technical field
The utility model belongs to a kind of novel feed system structure of numerically controlled lathe, be specially a kind of linear electric motors feed system structure, the applicable line motor technology, replace traditional ball-screw and servomotor feed system structure, for domestic Digit Control Machine Tool adopts techniques of linear motor, realize that high speed feed provides technological reserve.
Background technology
The feed system structure of general numerically controlled lathe all is to be connected with pair of nut with ball-screw by shaft joint by servomotor, changes rotatablely moving of servomotor into rectilinear motion by leading screw and pair of nut, and this structure generally adopts on Digit Control Machine Tool.Its weak point is: there are shortcomings such as backlass, inertia, frictional force and rigidity deficiency in lead screw transmission.
The utility model content
The purpose of this utility model is to provide a kind of linear electric motors feed system structure, adopt the linear electric motors transmission, is the contraction in length of feeding driving-chain zero, avoid shortcomings such as the backlass in the lead screw transmission, inertia, frictional force and rigidity deficiency, embodied exclusive high speed, high acceleration, low noise, the high-precision characteristic of linear electric motors.The technical problem that the utility model solves is:
1, linear electric motors every magnetic, anti-bits problem;
2, lightization of feeding moving-member and anticollision structure;
3, on tilting bed piece, X-axis adopts the problem that cuts off self-lock of linear electric motors.
The technical solution of the utility model is:
A kind of linear electric motors feed system structure, comprise slide plate, linear electric motors, straight-line rolling guide set, guide rail latch segment, the primary section structure core of linear electric motors is fixed on the slide plate, secondary section structure core is fixed on the saddle, saddle with its on slide plate between match by the X-axis straight-line rolling guide set, saddle, slide plate respectively with the X-axis guide rail of X-axis straight-line rolling guide set with can be connected the primary section structure core drive slide plate by linear electric motors and be installed on knife rest moving linearly on the slide plate along the X-axis slide block that the X-axis guide rail slides.
Described feed system structure is installed on the lathe saddle of tilting structure, match by Z axle straight-line rolling guide set between lathe saddle and the bed piece, lathe bed, saddle respectively with the Z axis rail of Z axle straight-line rolling guide set with can be connected along the Z axle slide block that the Z axis rail slides, the lathe saddle is along Z axle straight-line rolling guide set moving linearly.
Fluid pressure type line slideway latch segment is installed on the described X-axis straight-line rolling guide set, and the guide rail latch segment is fixed on the slide plate lower plane, under the state of not locking, can move along the guide rail direction.
The high accuracy linear displacement transducer that links to each other with digital control system is equipped with in described saddle, slide plate side.
Totally-enclosed forward and backward protection every magnetic, anti-bits is housed respectively on described saddle, the forward and backward both ends of the surface of slide plate draws cover.
The dead buting iron structure of anticollision is housed respectively on the described saddle front and back, and buffer unit is equipped with in the side of slide plate.
Described linear electric motors are by the digital control system control of lathe.
The beneficial effects of the utility model:
1. the utility model comprises: saddle, slide plate, linear electric motors, straight-line rolling guide set, guide rail latch segment, linear displacement transducer, totally-enclosed cover, the dead buting iron structure of anticollision and the buffer unit of drawing.Drive slide plate along the rolling guide-rail pairs moving linearly by linear electric motors.Because transmission link in the middle of not having has reduced the friction of lead screw transmission, reduce the noise of lathe, its movement velocity is improved a lot.The movement velocity of general lathe is 20m/min, and acceleration 0.5G adopts the movement velocity of linear electric motors lathe can reach 60m/min, and acceleration can reach 1~1.5G, reduces the non-cutting time of processing, has improved production efficiency.
2. the utility model has been cancelled driving members such as leading screw, has reduced the tracking error that lead screw transmission lags behind and brought, and carries out the position probing FEEDBACK CONTROL by the high accuracy linear displacement transducer, has improved the positioning accuracy of lathe, has improved the machining accuracy of lathe simultaneously.The positioning accuracy of lathe is 0.006mm, and repetitive positioning accuracy is 0.003mm.
3. the utility model replaces traditional ball-screw and servomotor feed system structure with linear electric motors, the frame for movement that will cause the transmission feeding system of machine industry is undergone mutation, and the performance indications such as machining accuracy, production efficiency of lathe are greatly improved.
Description of drawings
Fig. 1 is a general illustration of the present utility model.
Fig. 2 is that the utility model linear electric motors are installed schematic cross-section.
Fig. 3 is the utility model guide rail latch segment scheme of installation.
Fig. 4 is the side view of Fig. 3.
Among the figure, 1, lathe bed; 2, saddle; 3, cover is drawn in the back protection; 4, buffer unit; 5, knife rest; 6, slide plate; 7, cover is drawn in preceding protection; 8, Z axle slide block; 9, X-axis slide block; 10, secondary section structure core; 11, primary section structure core; 12, displacement transducer; 13, guide rail latch segment; 14, Z axis rail; 15, X-axis guide rail; 16 dead buting iron; 17 collision blocks; 18 dead buting iron.
The specific embodiment
Below in conjunction with the specific embodiment the utility model is described in further detail.
Shown in Fig. 1-4, the utility model feed system structure is installed on the working face of tilting lathe bed 1, can be along Z axle straight-line rolling guide set at the Z-direction moving linearly, the X-axis straight-line rolling guide set is fixed on the saddle 2 that is installed on tilting lathe bed 1, and the primary section structure core 11 by linear electric motors drives slide plates 6 and is installed on the rectilinear motion that knife rest 5 on the slide plate 6 is made X-direction.Z axle straight-line rolling guide set is made of Z axis rail 14 and the Z axle slide block 8 that is installed on the Z axis rail 14, and the X-axis straight-line rolling guide set is made of X-axis guide rail 15 and the X-axis slide block 9 that is installed on the X-axis guide rail 15.X-axis is parallel to the saddle direction for paper among Fig. 1, and the Z axle is perpendicular to the paper direction among Fig. 1.
As shown in Figure 1, lathe saddle 2 is installed on the bed piece 1, the utility model feed system structure is installed on the lathe saddle 2 of tilting structure, the working face of saddle 2 and horizontal plane angle are 45 °, match by Z axle straight-line rolling guide set between lathe saddle 2 and the bed piece 1, lathe bed 1, saddle 2 respectively with the Z axis rail 14 of Z axle straight-line rolling guide set with can be connected along the Z axle slide block 8 that Z axis rail 14 slides, lathe saddle 2 is along Z axle straight-line rolling guide set moving linearly.The dead buting iron 16 of anticollision is installed on the centre position, front of saddle 2, and the 17th, be fixed on the collision block on the slide plate 6.4 buffer units when being slide plate 6 motion among the figure, buffer unit 4 is used by hydraulic oil and spring and realizes buffering, and buffer unit 4 is installed in the side of slide plate 6, and the 18th, be fixed on the dead buting iron of saddle 2.Before protection draw cover 7 and back protection to draw cover 3 to be connected with saddle 2 with slide plate 6 respectively, the space that formation is sealed.Because the special material (stainless steel) that cover adopts and the structure of this sealing are drawn in protection, can stop smear metal in the machine tooling process and cutting fluid, effective isolation linear electric motors the magnetic field effect, realize the motion of high speed, high acceleration.
As shown in Figure 2, linear electric motors are made up of primary section structure core 11 and secondary section structure core 10, secondary section structure core is a permanent magnetic plate, the primary section structure core 11 of linear electric motors is fixed on the slide plate 6, secondary section structure core 10 is fixed on the saddle 2, saddle 2 with its on slide plate 6 between match by the X-axis straight-line rolling guide set, saddle 2, slide plate 6 respectively with the X-axis guide rail 15 of X-axis straight-line rolling guide set with can be connected along the X-axis slide block 9 that X-axis guide rail 15 slides.When to after the linear electric motors energisings,, make slide plate 6 along X-axis straight-line rolling guide set moving linearly owing to the effect in magnetic field produces electromagnetic push.High accuracy linear displacement transducer 12 (precision is for about ± 3 μ m/1000mm) is equipped with in saddle 2, slide plate 6 sides, it is made up of scale and scanning element, scale is installed on the slide plate 6, and scanning element is installed on the saddle 2, controls the kinematic accuracy that detects slide plate and knife rest by it and digital control system.Guide rail latch segment 13 is fixed on slide plate 6 lower planes, places the centre of X-axis slide block 9.
Shown in Fig. 3,4, disk spring and hydraulic jack are housed in the guide rail latch segment 13.In the time of in working order, hydraulic jack by piston action on disk spring, make between the X-axis guide rail 15 of guide rail latch segment 13 and X-axis straight-line rolling guide set and produce certain clearance, do not influence the motion of linear electric motors, when linear electric motors are not worked or are cut off the power supply, control makes the hydraulic valve delay cut-off on digital control system, commutation makes hydraulic oil unload oil sump tank rapidly, disk spring is pressed on guide rail latch segment 13 on the X-axis guide rail 15 of X-axis straight-line rolling guide set, self-locking when realizing the outage of X-axis straight-line rolling guide set prevents that moving-member from gliding.This structure oil cylinder stroke is short, reliable in action, and reaction speed is fast, both can realize self-locking at<0.1S, and simple in structure, and size is little, light weight.Solved on tilting bed piece, X-axis adopts the problem that cuts off self-lock of linear electric motors.

Claims (7)

1. linear electric motors feed system structure, it is characterized in that: comprise slide plate, linear electric motors, straight-line rolling guide set, the guide rail latch segment, the primary section structure core (11) of linear electric motors is fixed on the slide plate (6), secondary section structure core (10) is fixed on the saddle (2), saddle (2) with its on slide plate (6) between match by the X-axis straight-line rolling guide set, saddle (2), slide plate (6) respectively with the X-axis guide rail (15) of X-axis straight-line rolling guide set with can be connected primary section structure core (11) the drive slide plate (6) by linear electric motors and be installed on knife rest (5) moving linearly on the slide plate (6) along the X-axis slide block (9) that X-axis guide rail (15) slides.
2. according to the described linear electric motors feed system of claim 1 structure, it is characterized in that: described feed system structure is installed on the lathe saddle (2) of tilting structure, match by Z axle straight-line rolling guide set between lathe saddle (2) and the bed piece (1), lathe bed (1), saddle (2) respectively with the Z axis rail (14) of Z axle straight-line rolling guide set with can be connected along the Z axle slide block (8) that Z axis rail (14) slides, lathe saddle (2) is along Z axle straight-line rolling guide set moving linearly.
3. by the described linear electric motors feed system of claim 1 structure, it is characterized in that: fluid pressure type line slideway latch segment (13) is installed on the described X-axis straight-line rolling guide set, and guide rail latch segment (13) is fixed on slide plate (6) lower plane.
4. by the described linear electric motors feed system of claim 1 structure, it is characterized in that: the linear displacement transducer (12) that links to each other with digital control system is equipped with in described saddle (2), slide plate (6) side.
5. by the described linear electric motors feed system of claim 1 structure, it is characterized in that: totally-enclosed forward and backward protection every magnetic, anti-bits is housed respectively on described saddle (2), the forward and backward both ends of the surface of slide plate (6) draws cover (7,3).
6. by the described linear electric motors feed system of claim 1 structure, it is characterized in that: the dead buting iron of anticollision (16,18) is housed respectively on described saddle (2) front and back, and buffer unit (4) is equipped with in the side of slide plate (6).
7. by the described linear electric motors feed system of claim 1 structure, it is characterized in that: described linear electric motors are by the digital control system control of lathe.
CN 200520145892 2005-12-21 2005-12-21 Linear motor feeding system structure Expired - Lifetime CN2868543Y (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101977014A (en) * 2010-11-28 2011-02-16 沈阳工业大学 Energy consumption-time optimal control method for linear motor servo system and established system
CN102259280A (en) * 2010-05-27 2011-11-30 刘玉民 Grinding wheel stroke transmission device on linear motor driven numerical-control relieved tooth grinding machine y axis
CN102364557A (en) * 2011-11-08 2012-02-29 大连机床(数控)股份有限公司 Production-practicability type assembly, adjustment and repair lathe for teaching purpose
CN106181770A (en) * 2016-08-31 2016-12-07 湖南大学 A kind of feed arrangement and lathe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102259280A (en) * 2010-05-27 2011-11-30 刘玉民 Grinding wheel stroke transmission device on linear motor driven numerical-control relieved tooth grinding machine y axis
CN101977014A (en) * 2010-11-28 2011-02-16 沈阳工业大学 Energy consumption-time optimal control method for linear motor servo system and established system
CN101977014B (en) * 2010-11-28 2012-08-15 沈阳工业大学 Energy consumption-time optimal control method for linear motor servo system and established system
CN102364557A (en) * 2011-11-08 2012-02-29 大连机床(数控)股份有限公司 Production-practicability type assembly, adjustment and repair lathe for teaching purpose
CN106181770A (en) * 2016-08-31 2016-12-07 湖南大学 A kind of feed arrangement and lathe

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Zhongjie Machine Tool Co., Ltd.

Assignor: Shenyang Machine Tools Plant No. 1

Contract fulfillment period: 2008.8.1 to 2017.12.14

Contract record no.: 2009210000100

Denomination of utility model: Linear motor feeding system structure

Granted publication date: 20070214

License type: Exclusive license

Record date: 20090408

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.1 TO 2017.12.14; CHANGE OF CONTRACT

Name of requester: ZHONGJIE MACHINE TOOL CO., LTD.

Effective date: 20090408

CX01 Expiry of patent term

Granted publication date: 20070214

EXPY Termination of patent right or utility model