CN105729141A - Precise linear two-dimensional double-drive workbench based on control of open numerical-control system - Google Patents
Precise linear two-dimensional double-drive workbench based on control of open numerical-control system Download PDFInfo
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- CN105729141A CN105729141A CN201610217168.7A CN201610217168A CN105729141A CN 105729141 A CN105729141 A CN 105729141A CN 201610217168 A CN201610217168 A CN 201610217168A CN 105729141 A CN105729141 A CN 105729141A
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- guide rail
- linear module
- feed
- ball
- rail seat
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Classifications
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
- B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
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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
- B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
- B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/36—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission in which a servomotor forms an essential element
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Abstract
The invention relates to the technical field of precision machining and ultra-precision machining of small-sized light-load machine tools, in particular to a precise linear two-dimensional double-drive workbench based on the control of an open numerical-control system. The precise linear two-dimensional double-drive workbench comprises a movable sliding table, an X-feeding-direction linear module, a Z-feeding-direction linear module, a base and the open numerical-control system. The movable sliding table is connected to the X-feeding-direction linear module through a flange with double screws and sliding blocks. The X-feeding-direction linear module is connected to the Z-feeding-direction linear module through a flange with double screws and sliding blocks. The X-feeding-direction linear module and the Z-feeding-direction linear module are arranged perpendicularly in an orthorhombic mode. The Z-feeding-direction linear module is arranged on the base. According to the precise linear two-dimensional double-drive workbench, by the adoption of the structure, the precise linear two-dimensional double-drive workbench has the characteristics of being high in accuracy, high in rigidity, free of gaps, and compact and attractive in appearance, and the precise linear two-dimensional double-drive workbench is suitable for precision machining and ultra-precision machining of small-sized and medium-sized light-load machine tools.
Description
Technical field
The present invention relates to underloading junior machine precision, Ultraprecision Machining field, refer in particular to a kind of accurate straight line two dimension pair controlled based on Open CNC and drive workbench.
Background technology
Basis accurate, that Ultraprecision Machining is high-tech technical field, improves precision machined precision very urgent, and along with user is to gradually stepping up that product precision, quality etc. require, Precision Machining equipment is also increasingly subject to people's attention.And workbench as numerical control machining equipment control object and perform structure, the innovative design of its system structure and performance optimization and control method will directly affect the service behaviour of equipment.
By consulting pertinent literature, tradition feeding with high precision drive system adopts the type of drive of single " servomotor+ball-screw ", owing to single motor-driven rigidity of structure is relatively low, make its repetitive positioning accuracy not high, and single screw drives required leading screw thicker, rotary inertia is bigger, therefore its response speed is slower, often adding man-hour it is difficult to ensure that axle driving force accurately acts on the center of gravity of moving component, under actual condition, precision and the life-span of mechanized equipment can all be produced considerable influence by secular disequilibrium load.
In view of the above problems, invent a kind of its and drive workbench in the Beckhoff accurate straight line controlled two dimension pair, namely at X, any direction of feed of Z all adopts the drive form of double, two " servomotor+ball-screw ", so far, double, two technology of driving are mainly used in the heavily loaded lathe of large-sized gantry structure, lathe load-carrying is improved by double lead-screw structure, the speed of service and service life etc., but in middle-size and small-size precision, super-precision machine tools use less, and generally adopt the feeding on one-dimensional single-degree-of-freedom direction, can not meet Precision Machining requirement multi-shaft interlocked in the actual course of processing, there is limitation in processing.
Number of patent application 201110064524.3 discloses a kind of double lead-screw and drives the lead screw guide rails driving device of lathe, it it is a kind of linear modular structure employing double; two guide rail double lead-screw in one-dimensional space direction, it includes fixture and movement parts, being arranged with two guide rails on fixture in parallel, two guide rail inside parallel are provided with two leading screws；Movement parts and threads of lead screw are connected by single nut, are typical one-dimensional pair and drive workbench.Due to the processing that this slide unit structure can be only done in the one-dimensional space in single direction of feed, the range of work and limited in one's ability, the target of precision processing on two degree of freedom directions of two-dimensional space cannot be completed, and due to fixing guide rail arrangement, cannot be optimized for stressing conditions in each direction of feed, reduce the rigidity of structure that workbench is overall.
Number of patent application 201310283739.3 discloses the double; two of a kind of ultrasonic scanning microscope stepping axle and drives structure and double; two method of adjustment driving pulse parameter coupling, this pair drives that structure includes that unit is driven on a left side, unit is driven on the right side, front support beam, rear support beam and X be to crossbeam, front support beam, rear support beam dock left driver element and right driver element in front side and rear side respectively, and X connects left driver element and right driver element to crossbeam.This structure is a kind of double; two slide unit driving technology of use in the one-dimensional space, equally exists processing limitation, and stepping axle, by the impact of motor self performance, can further improve its control accuracy.
Number of patent application 201110377972.9 discloses a kind of based on double, two double-workpiece-table switch and the method driving step-scan of double, two guide rails, this device includes base station, it is positioned at prealignment station and the work stage of exposure station, balance mass block is preset 4 Y-direction linear motion units and 2 X to linear motion unit, this device only utilizes Y-direction linear motion unit and X to constitute to linear motion unit at exposure station, and double, two guide rail is double, two drives structure, do not drive technology at X or Y-direction employing pair, and owing to work stage adopts, with guide rail, the mode that is of coupled connections, can there is of short duration separating with driver element in work stage in exchange process, the positioning precision of work stage is impacted.
Summary of the invention
For problem above, the invention provides that a kind of accurate straight line two dimension controlled based on Open CNC is double; two drives workbench, its have high accuracy, high rigidity, without back clearance, feature that compact appearance is attractive in appearance, it is adaptable to middle-size and small-size precision, Ultra-precision Turning underloading lathe.
To achieve these goals, the technical solution used in the present invention is as follows:
nullA kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench，Including motion slide unit、The linear module of X direction of feed、The linear module of Z direction of feed、Pedestal and Open CNC，Motion slide unit is connected to the linear module of X direction of feed by the flange of double nut and slide block，The linear module of X direction of feed is connected to the linear module of Z direction of feed by the flange of double nut and slide block，The linear module of X direction of feed is arranged with the linear module orthogonal vertical of Z direction of feed，The linear module of Z direction of feed is located on pedestal，The linear module of X direction of feed is identical with Z direction of feed linear module overall structure，All include servomotor、Bearing (ball) cover、Motor support base、Angular contact bearing、Photoelectric sensor、Absolute grating ruler、Precision ball screw pair of nut、Line slideway auxiliary、Deep groove ball bearing、Guide rail seat、Limit switch、Buting iron、Shaft coupling，Servomotor electrically connects with Open CNC.
Furthermore, it is respectively equipped with two servomotors in the described linear module of X direction of feed and the linear module plane of Z direction of feed, servomotor is fixed on one end of guide rail seat by motor support base, it is provided externally with bearing (ball) cover, guide rail seat is provided with two guide rails be arrangeding in parallel, guide rail is provided with precision ball screw, and precision ball screw is connected to servomotor by shaft coupling, and photoelectric sensor, absolute grating ruler, limit switch and buting iron are respectively arranged on guide rail seat side.
Furthermore, described guide rail seat includes bearing block and track base, bearing block is arranged with track base integrative-structure, bearing (ball) cover is coupled by screw axis bearing, guide rail is fixed by screws on track base, precision ball screw is installed on bearing block by angular contact bearing and deep groove ball bearing, and shaft coupling adopts the shaft coupling without circular gap.
Furthermore, described guide rail is provided with three ball sliders, and ball slider upper surface is by screw attachment in motion slide unit, and ball slider lower surface is connected in guide rail by ball.
Furthermore, described guide rail is located at inside precision ball screw, adopts reference side and slave end mode to install, and without lateral retaining mechanism.
Furthermore, described photoelectric sensor is fixed on guide rail seat side near servomotor end by sensor stand, and the position close to end, the guide rail seat side is located at by limit switch, and buting iron is located at the bearing block side of guide rail seat.
Furthermore, described motion slide unit and the guide rail seat of the linear module of X direction of feed are respectively equipped with two pieces of otic placodes, two pieces of otic placodes on motion slide unit are located on motion slide unit auxiliary diagonal, two pieces of otic placodes on the guide rail seat of the linear module of X direction of feed are located at the guide rail seat side side near servomotor, side adopts and is vertically arranged, and opposite side adopts and is horizontally disposed with.
The method have the benefit that
1. drive " servomotor+ball-screw " type of drive by two dimension is double; two, achieve the high accuracy in two directions of feed of X, Z and high rigidity, meet multi-shaft interlocked processing request, the impact of the torsional moment that energy elimination does not produce due to active force on one-dimensional slide unit neutral surface, provides hardware foundation for improving stage accuracy；
2. by by track base and the design of bearing block integrative-structure, composition guide rail seat, track base is as machining benchmark, clamped one time machine-shaping, ensure the depth of parallelism of two leading screws on the linear module of X, Z direction of feed and the axiality of two ends respective shaft bearing hole, to reduce rigging error and vibration error, the rigidity of the whole framework of the system that improves；
3. by adopting the flange of double nut and the shaft coupling without circular gap can effectively eliminate the reverse error in feed system；
4., by adopting absolute grating ruler, the respective displacement of double; two ball-screw and the shift differences between them, the deflection that also measurable power and the difference of power, speed etc. cause simultaneously can be predicted；
5. by adopting Open CNC, it is possible to arrange deviation interpolated point and compensation at any axial location, firmly compensating with the predictive value of the deformation of speed, system accuracy can reach within 7um in addition.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present invention；
Fig. 2 is the linear modular structure figure of Z direction of feed；
Fig. 3 is present system control structure figure；
Fig. 4 is the top view of the linear module of X direction of feed；
Fig. 5 is the structural representation of guide rail seat.
1, servomotor；2, bearing (ball) cover；3, motor support base；4, angular contact bearing；5, photoelectric sensor；6, absolute grating ruler；7, precision ball screw pair of nut；8, line slideway auxiliary；9, deep groove ball bearing；10, guide rail seat；11, limit switch；12, buting iron；13, shaft coupling；20, motion slide unit.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, technical scheme is illustrated.
nullAs shown in Figures 1 to 5，A kind of accurate straight line two dimension pair controlled based on Open CNC of the present invention drives workbench，Including motion slide unit 20、The linear module of X direction of feed、The linear module of Z direction of feed、Pedestal and Open CNC，Motion slide unit 20 is connected to the linear module of X direction of feed by the flange of double nut and slide block，The linear module of X direction of feed is connected to the linear module of Z direction of feed by the flange of double nut and slide block，The linear module of X direction of feed is arranged with the linear module orthogonal vertical of Z direction of feed，The linear module of Z direction of feed is located on pedestal，The linear module of X direction of feed is identical with Z direction of feed linear module overall structure，All include servomotor 1、Bearing (ball) cover 2、Motor support base 3、Angular contact bearing 4、Photoelectric sensor 5、Absolute grating ruler 6、Precision ball screw pair of nut 7、Line slideway auxiliary 8、Deep groove ball bearing 9、Guide rail seat 10、Limit switch 11、Buting iron 12、Shaft coupling 13，Servomotor 1 electrically connects with Open CNC.
The above constitutes basic structure of the present invention.
nullWorkbench of the present invention adopts horizontal type structure，" servomotor+ball-screw " type of drive is driven by two dimension is double; two，Achieve X、High accuracy on Z any direction and high rigidity，Meet multi-shaft interlocked processing request，The impact of the torsional moment that energy elimination does not produce due to active force on one-dimensional slide unit neutral surface，Hardware foundation is provided for improving stage accuracy，Additionally，The flange of double nut and the shaft coupling 13 without circular gap is adopted can effectively to eliminate the reverse error in feed system，Adopt absolute grating ruler，The respective displacement of double; two ball-screw and the shift differences between them can be predicted，The simultaneously difference of also measurable power and power、The deflection that speed etc. cause，Adopt Open CNC，Deviation interpolated point and compensation can be set at any axial location，In addition firmly compensate with the predictive value of the deformation of speed，System accuracy can reach within 7um，There is high accuracy、High rigidity、The features such as compact conformation，Accurate suitable in middle-size and small-size underloading、Ultra-precision Turning field.
More specifically, it is respectively equipped with two servomotors 1 in the described linear module of X direction of feed and the linear module plane of Z direction of feed, servomotor 1 is fixed on one end of guide rail seat 10 by motor support base 3, it is provided externally with bearing (ball) cover 2, guide rail seat 10 is provided with two guide rails be arrangeding in parallel, guide rail is provided with precision ball screw, precision ball screw is connected to servomotor 1 by shaft coupling 13, and photoelectric sensor 5, absolute grating ruler 6, limit switch 11 are respectively arranged on guide rail seat 10 side with buting iron 12.Two guide rails be arrangeding in parallel on the guide rail seat 10 of the linear module of Z direction of feed of the present invention preferably adopt spacing to be 140mm, and two guide rails be arrangeding in parallel on the guide rail seat 10 of the described linear module of X direction of feed preferably adopt spacing to be 160mm.Have an advantage in that cutting force suffered by reasonable distribution workbench so that workbench deflection is little, thus improving workbench rigidity.
More specifically, described guide rail seat 10 includes bearing block and track base, bearing block is arranged with track base integrative-structure, bearing (ball) cover 2 is coupled by screw axis bearing, guide rail is fixed by screws on track base, precision ball screw is installed on bearing block by angular contact bearing 4 and deep groove ball bearing 9, and shaft coupling 13 adopts the shaft coupling without circular gap.By by track base and the design of bearing block integrative-structure, composition guide rail seat, track base is as machining benchmark, clamped one time machine-shaping, ensure the depth of parallelism of two leading screws on the linear module of X, Z direction of feed and the axiality of two ends respective shaft bearing hole, to reduce rigging error and vibration error, the rigidity of the whole framework of the system that improves.The effect of bearing (ball) cover 2 is in that to prevent the axial float of leading screw.
More specifically, described guide rail is provided with three ball sliders, and ball slider upper surface is by screw attachment in motion slide unit 20, and ball slider lower surface is connected in guide rail by ball.Upper layer motion slide unit 20 is supported and leads by the ball slider on every guide rail, and three ball sliders are distributed to reduce frictional force at a certain distance, improves contact stiffness and kinetic stability.
More specifically, described guide rail is located at inside precision ball screw, adopts reference side and slave end mode to install, and without lateral retaining mechanism.It is easy to by reference side stress.
More specifically, described photoelectric sensor 5 is fixed on guide rail seat 10 side near servomotor 1 end by sensor stand, and the position close to end, guide rail seat 10 side is located at by limit switch 11, and buting iron 12 is located at the bearing block side of guide rail seat 10.
More specifically, described motion slide unit 20 and the guide rail seat 10 of the linear module of X direction of feed are respectively equipped with two pieces of otic placodes, two pieces of otic placodes on motion slide unit 20 are located on motion slide unit 20 auxiliary diagonal, two pieces of otic placodes on the guide rail seat 10 of the linear module of X direction of feed are located at guide rail seat 10 side side near servomotor 1, side adopts and is vertically arranged, and opposite side adopts and is horizontally disposed with.
Workflow of the present invention is as follows:
Servomotor 1 is power part, in the X direction, servomotor 1 moves, by driving precision ball screw to rotate without back clearance shaft coupling 13, ball-screw rotary motion is changed into rectilinear motion, drive double nut is for linear motion, double nut is coupled with motion slide unit 20 by flange, band moving slide block does feed motion, three ball sliders are as the support of motion slide unit 20, turning to of servomotor 1 is controlled by Open CNC, can maintain the achievements of one's predecessors forward in the X direction, adverse movement, motion slide unit 20 position can be passed through the absolute grating ruler 6 of slide unit side and record, and Beckhoff motion control card can be fed back to；
In z-direction, each component working principle and X-direction are as good as, and institute is the difference is that the flange drive linear module of X-direction and motion slide unit 20 associated movement that pass through feed screw nut when Z-direction linear module move.
Being more than the present invention preferably embodiment, above-mentioned embodiment can also be modified and revise by those skilled in the art in the invention.Therefore, the invention is not limited in that above-mentioned detailed description of the invention, every those skilled in the art make on the basis of the present invention any conspicuously improved, replace or modification belongs to protection scope of the present invention.
Claims (7)
- null1. the accurate straight line two dimension pair controlled based on Open CNC drives workbench，Including motion slide unit (20)、The linear module of X direction of feed、The linear module of Z direction of feed、Pedestal and Open CNC，It is characterized in that: described motion slide unit (20) is connected to the linear module of X direction of feed by the flange of double nut and slide block，The described linear module of X direction of feed is connected to the linear module of Z direction of feed by the flange of double nut and slide block，The described linear module of X direction of feed is arranged with the linear module orthogonal vertical of Z direction of feed，The described linear module of Z direction of feed is located on pedestal，The described linear module of X direction of feed is identical with Z direction of feed linear module overall structure，All include servomotor (1)、Bearing (ball) cover (2)、Motor support base (3)、Angular contact bearing (4)、Photoelectric sensor (5)、Absolute grating ruler (6)、Precision ball screw pair of nut (7)、Line slideway auxiliary (8)、Deep groove ball bearing (9)、Guide rail seat (10)、Limit switch (11)、Buting iron (12)、Shaft coupling (13)，Described servomotor (1) electrically connects with Open CNC.
- 2. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 1, it is characterized in that: in the described linear module of X direction of feed and the linear module plane of Z direction of feed, be respectively equipped with two servomotors (1), described servomotor (1) is fixed on one end of guide rail seat (10) by motor support base (3), it is provided externally with bearing (ball) cover (2), described guide rail seat (10) is provided with two guide rails be arrangeding in parallel, described guide rail is provided with precision ball screw, described precision ball screw is connected to servomotor (1) by shaft coupling (13), described photoelectric sensor (5), absolute grating ruler (6), limit switch (11) and buting iron (12) are respectively arranged on guide rail seat (10) side.
- 3. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 2, it is characterized in that: described guide rail seat (10) includes bearing block and track base, described bearing block is arranged with track base integrative-structure, described bearing (ball) cover (2) is coupled by screw axis bearing, described guide rail is fixed by screws on track base, described precision ball screw is installed on bearing block by angular contact bearing (4) and deep groove ball bearing (9), and described shaft coupling (13) adopts the shaft coupling without circular gap.
- 4. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 2, it is characterized in that: described guide rail is provided with three ball sliders, described ball slider upper surface is by screw attachment in motion slide unit (20), and described ball slider lower surface is connected in guide rail by ball.
- 5. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 2, it is characterised in that: described guide rail is located at inside precision ball screw, adopts reference side and slave end mode to install, and without lateral retaining mechanism.
- 6. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 2, it is characterized in that: described photoelectric sensor (5) is fixed on guide rail seat (10) side by sensor stand to be held near servomotor (1), the position close to end, guide rail seat (10) side is located at by described limit switch (11), and described buting iron (12) is located at the bearing block side of guide rail seat (10).
- 7. a kind of accurate straight line two dimension pair controlled based on Open CNC drives workbench according to claim 1, it is characterized in that: described motion slide unit (20) and the guide rail seat (10) of the linear module of X direction of feed are respectively equipped with two pieces of otic placodes, two pieces of otic placodes on described motion slide unit (20) are located on motion slide unit (20) auxiliary diagonal, two pieces of otic placodes on the guide rail seat (10) of the described linear module of X direction of feed are located at guide rail seat (10) side side near servomotor (1), side adopts and is vertically arranged, opposite side adopts and is horizontally disposed with.
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| CN201610217168.7A CN105729141A (en) | 2016-04-08 | 2016-04-08 | Precise linear two-dimensional double-drive workbench based on control of open numerical-control system |
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