CN104439570A - High-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool - Google Patents
High-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool Download PDFInfo
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- CN104439570A CN104439570A CN201410701408.1A CN201410701408A CN104439570A CN 104439570 A CN104439570 A CN 104439570A CN 201410701408 A CN201410701408 A CN 201410701408A CN 104439570 A CN104439570 A CN 104439570A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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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
- B23Q1/015—Frames, beds, pillars
-
- 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
-
- 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
- B23Q1/626—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 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
- 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
-
- 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
- B23Q5/28—Electric drives
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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
- 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
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool. The high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool comprises a base, a back-inclined tool body, two saddles, two stretchable sliding bases, two main shaft heads, a first linear motor, a second linear motor, a third linear motor, two first grating rulers, two second grating rulers, a first linear guide rail pair, two second linear guide rail pairs and a ball screw. According to the high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool, the gravity centers of movement parts such as the saddles and the stretchable sliding bases are moved backwards, it is guaranteed that the gravity centers of the movement parts of the machine tool act on the tool body all the time when the stretchable sliding bases are moved to the limiting positions, the effect of the back-inclined tool body is sufficiently developed by means of the structure, and the capsizing moment generated when the stretchable sliding bases are moved forwards is balanced through powerful attraction force between rotors and stators of the linear motors between the back-inclined tool body and the two sliding bases; meanwhile, independent linear driving of and cooperation control over the two saddles are carried out through the single-stator and double-rotor linear motors, mutual interference of the two saddles in the large-stroke direction can be avoided, and safe running of the saddles is guaranteed.
Description
Technical field
The present invention is the two ox head anticline lathe bed spark-erosion machine tool of a kind of high speed and large stroke, belongs to the innovative technology of the two ox head anticline lathe bed electric spark machine bed structure of high speed and large stroke and control.
Background technology
The two ox head spark-erosion machine tool of traditional Long Distances adopts " C " type horizontal beds body structure, the center of gravity of lathe is moved forward, flexible slide cantilever design produces very large tilting moment, affect the rigidity of spindle head of lathe in Z-direction, the movable major axes orientation that easily causes of flexible slide produces displacement, thus affects the positional precision in spark-erosion machine tool spindle processing direction.
Saddle and flexible slide are the critical moving components of the two ox head spark-erosion machine tool of Long Distances, and the motion of current machine tool motion component mainly adopts ball screw assembly, to drive, and is rectilinear motion by the convert rotational motion of motor.The slip of screw pair is replaced with the rolling of ball, it is little that it has frictional force, transmission efficiency is high, axial gap can be eliminated, positioning precision advantages of higher, but high speed and large stroke lathe is needed to adopt large pitch, overlength ball-screw pair of nut to drive, and this drives structure exists that cost is high, rotary inertia is large, rigidity is low, the features such as leading screw is yielding, are difficult to the requirement meeting high speed, high accuracy, Long Distances processing.
Summary of the invention
The object of this invention is to provide a kind of positioning precision high, fast response time, the two ox head anticline lathe bed spark-erosion machine tool of the high speed and large stroke that rigidity is high.
Technical scheme of the present invention is: the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke of the present invention, include base, anticline lathe bed, two saddles, two flexible slides, two main tappings, first linear electric motors, the second linear electric motors, 3rd linear electric motors, two the first grating scales, two the second grating scales, the first line slideway auxiliary, two the second line slideway auxiliaries, ball-screws, wherein floor installation on the ground, anticline lathe bed is fixedly mounted on base, two saddles are connected with anticline lathe bed by the first line slideway auxiliary, two saddles are driven by the first linear electric motors, two saddles are driven to move along the X direction, two flexible slides are connected with two saddles respectively by two the second line slideway auxiliaries, carry out Movement transmit, one of them flexible slide is connected with one of them saddle by one of them second line slideway auxiliary, second linear electric motors drive one of them flexible slide to move along Y2 direction by one of them second line slideway auxiliary, another flexible slide is connected with another saddle by another second line slideway auxiliary, 3rd linear electric motors drive another flexible slide to move along Y1 direction by another second line slideway auxiliary, one of them first grating scale is arranged on one of them flexible slide, one of them saddle is provided with grating ruler reading head on the position of corresponding first grating scale, another first grating scale is arranged on another flexible slide, another saddle installs grating ruler reading head on the position of another the first grating scale corresponding, two the first grating scales and corresponding read head form the online position detecting feedback system of two flexible slides, realize two flexible slides in Y1 direction, the on-line checkingi of movement position and FEEDBACK CONTROL on Y2 direction, two the second grating scales are cemented on anticline lathe bed, the read head of two the second grating scales respectively correspondence is arranged on two saddles, realize the on-line checkingi to two saddles movement position in the X direction simultaneously, one of them main tapping is arranged on one of them flexible slide, another main tapping is arranged on wherein on another flexible slide, the leading screw of ball-screw-transmission pair is connected with servomotor, the nut of ball-screw-transmission pair is fixedly mounted on one of them main tapping, driven by servomotor ball guide screw nat rotates, drive one of them main tapping moving along Z1 direction, the drives structure of another main tapping is identical with the drives structure of one of them main tapping, is moved along Z2 direction by driven by servomotor.
Above-mentioned two the second line slideway auxiliaries are by 2 line slideways and 6 slide block compositions, and every root guide rail and 3 slide blocks form 1 moving sets; 2 line slideways of one of them the second line slideway auxiliary are arranged on one of them flexible slide lower surface, 6 upper surfaces being arranged on one of them saddle, and one of them flexible slide is connected with one of them saddle by one of them second line slideway auxiliary; In like manner, 2 guide rails assemblings of another the second line slideway auxiliary are on the lower surface of another flexible slide, 6 slide blocks are arranged on the upper surface of another saddle, another flexible slide is connected with another saddle by another second line slideway auxiliary, the mover of the second linear electric motors is arranged on one of them flexible slide, the stator correspondence of the second linear electric motors is installed on the saddle, and the second linear electric motors drive this flexible slide to move along Y2 direction; The mover of the 3rd linear electric motors is arranged on another flexible slide, and the stator of the 3rd linear electric motors respectively correspondence is arranged on this another saddle, and in like manner, the 3rd linear electric motors drive this flexible slide to move along Y1 direction.
Above-mentioned first line slideway auxiliary is made up of 2 line slideways and 8 slide blocks, and every root guide rail and 4 slide blocks form 1 moving sets, and 2 guide rails assemblings of the first line slideway auxiliary, on anticline lathe bed, the inclined end face of two saddles are installed respectively 4 slide blocks.
Above-mentioned first linear electric motors are the flat plate type linear motors with the two mover of single stator, two movers of the first linear electric motors are arranged on two saddles respectively, single stator is arranged on anticline lathe bed, two saddle kinematic systems that the single one or two mover linear electric motors of composition drive.Two saddles are driven to carry out drive and coordinate Servo Control along the X direction by the first linear electric motors.During the first linear electric motors work simultaneously between anticline lathe bed and two saddles, its mover and stator can balance pair telescopic stand in the powerful attraction that installed surface vertical direction produces and to move forward the tilting moment produced.
Above-mentioned two the second grating scales are cemented in the side of anticline lathe bed, and the read head of two the second grating scales respectively correspondence is arranged on two saddles, realize the on-line checkingi to two saddles movement position in the X direction simultaneously.
One of them first grating scale in above-mentioned two the first grating scales is arranged on the side of one of them flexible slide, the upper surface correspondence of this saddle installs grating ruler reading head, another first grating scale is arranged on another flexible slide side, and this flexible saddle upper surface correspondence installs grating ruler reading head.
One of them main tapping in above-mentioned two main tappings is arranged on one of them flexible slide by one of them main shaft headstock, this main shaft headstock consolidation is arranged on this flexible slide, servomotor is fixedly mounted on this main shaft headstock, Movement transmit is carried out by shaft coupling and ball-screw-transmission pair, the leading screw of ball-screw-transmission pair is connected with servomotor by shaft coupling, the nut of ball-screw-transmission pair is fixedly mounted on this main tapping, driven by servomotor ball guide screw nat rotates, thus drive this main tapping moving along Z1 direction under line slideway guiding, another main tapping is arranged on another flexible slide by another main shaft headstock, this main shaft headstock consolidation is arranged on another flexible slide, according to same principle, is moved along Z2 direction by this main tapping of corresponding driven by servomotor.
The two ends of above-mentioned anticline lathe bed are separately installed with the first extreme position switch, and 2 the 3rd elastic anti-collision blocks are respectively installed in anticline lathe bed both sides, and the 3rd elastic anti-collision block prevents two saddles from skidding off line slideway, plays cushioning effect simultaneously; 2 the second extreme position switches are installed in the relative inner face of above-mentioned 2 saddles, and the second elastic anti-collision block is arranged on two saddles, coordinate 2 the second extreme position switches to use, avoid 2 saddles movement interference in the X direction, play cushioning effect simultaneously; The both sides, front and back of above-mentioned 2 saddles are also provided with the 3rd extreme position switch preventing 2 flexible slide over-travel.
Above-mentioned 2 flexible slides are also provided with the first elastic anti-collision block; first elastic anti-collision block coordinates the 3rd extreme position switch to use; define 2 flexible slides in Y1, Y2 direction up stroke scope; prevent 2 flexible slides from exceeding stroke; simultaneously when 2 flexible slides stop at extreme position, play shock-absorbing protecting effect.
The inside gusset of above-mentioned 2 flexible slides adopts cellular biomimetic features, and above-mentioned base is installed on the ground by fot screw.
The present invention has following technique effect:
1, the present invention adopts novel anticline lathe bed structure and Long Distances, the direct drive mode of the dull and stereotyped linear electric motors of high thrust, wherein move after adopting novel anticline lathe bed structure to make lathe center, the impact simultaneously utilizing the powerful attraction between the dull and stereotyped linear motor rotor of high thrust and stator balance the slide that stretches to move forward, solve the two ox head spark-erosion machine tool flat lathe bed structure of traditional Long Distances because the tilting moment produced by flexible slide cantilever reach is to Machine Tool Positioning Accuracy, the technical problem of bearing capacity and stiffness effect, the waste gas that processing district produces can be overcome again simultaneously, the pollutants such as dust are on shortcomings such as the impacts of guide rail and electric mover stator performance.
2, the inside of base of the present invention have employed cross bar plate structure, effectively can increase the rigidity of lathe, alleviate lathe gross mass, saves cost.
3, the present invention adopts the structure of linear electric motors drive saddle and the motion of flexible slide, while simplifying transmission mechanism, saving installing space, improves the movement velocity of lathe saddle and flexible slide, acceleration, positioning precision and repetitive positioning accuracy.
4, the separate straight lines that the present invention adopts the two mover linear electric motors of single stator to carry out two saddle drives and cooperation control, can avoid the mutual interference of two saddle on Long Distances direction, ensure the security of operation of saddle, improve drive efficiency, save installing space.
The large-scale pair of ox head anticline lathe bed electric spark machine bed accessory that linear electric motors of the present invention drive has higher rigidity, bearing capacity, good dynamic property and anti-interference performance, the Long Distances gone for, at a high speed, the needs of high-accuracy spark-erosion machine tool.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is side view of the present invention;
Fig. 3 is the assembling schematic diagram of saddle of the present invention and flexible slide.
Fig. 4 is the close-up schematic view of saddle of the present invention and flexible slide slide block guide rail.
Detailed description of the invention
Embodiment:
Structural representation of the present invention is as Fig. 1, 2, shown in 3, the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke of the present invention, include base 1, anticline lathe bed 2, two saddles 121, 122, two flexible slides 61, 62, two main tappings 71, 72, first linear electric motors 4, second linear electric motors 22, 3rd linear electric motors 26, two the first grating scales 81, 82, second grating scale (15), first line slideway auxiliary 5, two the second line slideway auxiliaries 91, 92, ball-screw 20, composition anticline lathe bed and saddle portion, flexible slide part, main shaft headstock part three parts, concrete structure is as follows:
Anticline lathe bed and saddle portion:
Base 1 is installed on the ground by fot screw, and anticline lathe bed 2 is fixedly mounted on base 1; Wherein two saddles 121,122 carry out Movement transmit by the first line slideway auxiliary 5 with anticline lathe bed 2, first line slideway auxiliary 5 is made up of 2 line slideways and 8 slide blocks, every root guide rail and 4 slide blocks form 1 moving sets, 2 guide rails assemblings of the first line slideway auxiliary 5 are on anticline lathe bed 2, two saddle 121,122 inclined end faces install 4 slide blocks respectively, and two saddles 121,122 are connected with anticline lathe bed 2 by the first line slideway auxiliary 5.Two saddles 121, 122 are driven by plate first linear electric motors 4 with the two mover of single stator, wherein two movers of the first linear electric motors 4 are arranged on saddle 121 respectively, on 122, single stator is arranged on anticline lathe bed 2, the single one or two mover linear electric motors of composition drive two saddles 121, the kinematic system of 122, second grating scale 15 is cemented in the side of anticline lathe bed 2, 2 the second grating scale 15 read heads respectively correspondence are arranged on saddle 121, on 122, realize 2 saddles 121 simultaneously, the on-line checkingi of movement position on 122X direction, saddle 121 is driven by the first linear electric motors 4, 122 carry out drive and coordinate Servo Control along the X direction.When the first linear electric motors 4 simultaneously between anticline lathe bed 2 and saddle 121,122 work, its mover and stator can balance pair telescopic stand in the powerful attraction that installed surface vertical direction produces and to move forward the tilting moment produced.
Flexible slide part:
2 flexible slides 61,62 carry out Movement transmit with saddle 121,122 respectively by the second line slideway auxiliary 91,92; Wherein, flexible slide 61 carries out Movement transmit by the second line slideway auxiliary 91 with saddle 121, and flexible slide 62 carries out Movement transmit by the second line slideway auxiliary 92 with saddle 122; Second line slideway auxiliary 91,92 is by 2 line slideways and 6 slide block compositions, and every root guide rail and 3 slide blocks form 1 moving sets; Wherein, 2 line slideways of the second line slideway auxiliary 91 are arranged on the lower surface of flexible slide 61,6 slide blocks are arranged on the upper surface of slide block saddle 121, and flexible slide 61 is connected with saddle 121 by the second line slideway auxiliary 91, driven carry out relative motion by the 3rd linear electric motors 26; 2 guide rails assemblings of the second line slideway auxiliary 92 are on the lower surface of flexible slide 62,6 slide blocks are arranged on the upper surface of saddle 122, flexible slide 62 is connected with saddle 122 by the second line slideway auxiliary 92, and carries out relative motion by the second linear electric motors 22 driving.The mover of the second linear electric motors 22 is arranged on flexible slide 62, and stator correspondence is arranged on saddle 122, the mover of the 3rd linear electric motors 26 is arranged on flexible slide 61, stator respectively correspondence is arranged on saddle 121, flexible slide 62 is driven to move along Y2 direction by the second linear electric motors 22, 3rd linear electric motors 26 drive flexible slide 61 to move along Y1 direction, one of them first grating scale 81 is arranged on flexible slide 61 side simultaneously, the upper surface correspondence of saddle 121 installs 1 grating ruler reading head, another first grating scale 82 is arranged on flexible slide 62 side, the upper surface correspondence of saddle 122 installs 1 grating ruler reading head, by two the first grating scales 81, 82 form flexible slide 61 with corresponding read head, the online position detecting feedback system of 62, realize the on-line checkingi to flexible slide 61 movement position on Y2 direction in Y1 direction and flexible slide 62 and FEEDBACK CONTROL.
Main shaft headstock part:
Main shaft headstock 251 consolidation is arranged on flexible slide 61, and main shaft headstock 252 consolidation is arranged on flexible slide 62, and main tapping 71 is arranged on flexible slide 61 by main shaft headstock 251, and main tapping 72 is arranged on flexible slide 62 by main shaft headstock 252; Servomotor 19 is fixedly mounted on main shaft headstock 251, Movement transmit is carried out by shaft coupling and ball-screw 20, the leading screw of ball-screw-transmission pair 20 is connected with servomotor 19 by shaft coupling, the nut of ball-screw-transmission pair 20 is fixedly mounted on main tapping 71, servomotor 19 drives ball guide screw nat to rotate, thus drive shaft 71 moving along Z1 direction under line slideway guiding; According to same principle, moved along Z2 direction by corresponding driven by servomotor main tapping 72.
In the present embodiment, above-mentioned 2 main shaft headstocks 251,252 by bolt respectively correspondence be cemented on flexible slide 61,62.
In the present embodiment, above-mentioned first linear electric motors 4, second linear electric motors 22 and the 3rd linear electric motors 26 are dull and stereotyped linear electric motors.The rectilinear motion of two saddles, 121,122 and two flexible slides 61,62 all adopts dull and stereotyped linear motor direct drive, eliminates the redundancy gap of generation when commutation is moved.
In the present embodiment, above-mentioned second grating scale 15 is cemented in the side of anticline lathe bed 2 by bolt, and the first grating scale 81 is cemented in the side of flexible slide 61 by bolt, and the first grating scale 82 is cemented in the side of flexible slide 62 by bolt.
In the present embodiment, the two ends of above-mentioned anticline lathe bed 2 are arranged on the first extreme position switch 3, prevent saddle motion over-travel, play position limitation protection effect.Meanwhile, 2 the 3rd elastic anti-collision blocks 13 are respectively installed in anticline lathe bed 2 both sides, when two saddles 121,122 are in extreme position stop motion, play the effect of damping.2 the second extreme position switches 14 are installed in the opposite flank of above-mentioned two saddles 121,122, carry out duplicate protection, prevent two saddles from colliding; Above-mentioned 3rd extreme position switch 17 is installed on both sides before and after saddle, prevents flexible slide 61,62 over-travel, plays position limitation protection effect.
In the present embodiment, the inside gusset of above-mentioned flexible slide 61,62 adopts cellular biomimetic features 16, and this structure of above-mentioned flexible slide 61,62 has very high specific stiffness.
In the present embodiment, what above-mentioned base 1 inside adopted is cross bar plate structure 23, effectively can increase the rigidity of lathe.
Operation principle of the present invention is as follows:
1, a kind of novel efficient, the two ox head anticline lathe bed electric spark machine tool of high-accuracy Long Distances, the structural design of " C " type of employing and anticline lathe bed uniqueness, move after making lathe center of gravity, reduce the impact of the tilting moment of main tapping and flexible slide reach generation, the flexible slide of minimizing and main tapping add the distortion in man-hour;
2,2 saddles 121,122 are arranged on anticline lathe bed 2, each saddle angled end-face installs 4 slide blocks, 2 line slideways 5 installed by anticline lathe bed, 4 slide blocks and 1 guide rail form 1 moving sets, 2 saddles adopt the first linear electric motors 4 Direct driver, and the first linear motor stator electric is arranged on anticline lathe bed, and mover is respectively installed on 2 saddles, form two Structure of mover, adopt the second grating scale 15 can realize saddle simultaneously and control to detect with feedback in the high-precision motion of X-direction.Extreme position switch 3,14 sets saddle stroke range in the X direction, and reset elastic anti-collision fast 11,13, retrocession guarantees that two saddles do not produce collision;
3, flexible slide 61 is arranged on saddle 121, flexible slide 62 is arranged on saddle 122, each flexible slide installs 2 guide rails, 6 slide blocks are installed in each saddle upper surface, 3 slide blocks and 1 guide rail form 1 moving sets, flexible slide 62 adopts the second linear electric motors 22 to drive, flexible slide 61 adopts the 3rd linear electric motors 26 to drive, 2 motor stators are installed on saddle, mover is installed on flexible slide, adopt the first grating scale 81 can realize flexible slide 61 to detect at Y1 direction precise flange and feedback simultaneously, adopt the first grating scale 82 can realize the precise flange of flexible slide 62 in Y2 direction to detect with feedback.Extreme position switch 17 and elastic anti-collision block 10 set the stroke range of flexible slide on Y1, Y2 direction, avoid the collision of two flexible slides and lathe simultaneously;
4, main shaft headstock 251 is cemented on flexible slide 61, main shaft headstock 252 is cemented on flexible slide 62, main tapping 71 is arranged on flexible slide 61 by main shaft headstock 251, main tapping 72 is arranged on flexible slide 62 by main shaft headstock 252, adopt ball-screw 20 transmission, leading screw is directly connected with servomotor 19, nut is arranged in main tapping, by controlling corresponding servomotor, and coordinate guide rail guide effect, the motion of Direct driver main tapping 71 on Z1 direction, the motion of main tapping 72 on Z2 direction;
5, the first grating scale 81,82 and second grating scale 15 forms this lathe accurate measurement reponse system, carries out on-line checkingi in real time to machine tool motion state, greatly improves the machining accuracy of lathe.Second grating scale 15 is fixed on the side of anticline lathe bed 2, and read head is arranged on corresponding saddle respectively, realizes simultaneously to the on-line checkingi of saddle 121,122 movement position in the X direction; First grating scale 81 is fixed on the side of flexible slide 61, read head correspondence is arranged on saddle 121, first grating scale 82 is fixed on the side of flexible slide 62, read head correspondence is arranged on saddle 122, to realize flexible slide 61 in Y1 direction, the on-line checkingi of flexible slide 62 movement position on Y2 direction.
Lathe bed of the present invention adopts anticline lathe bed structure, the architectural feature of anticline lathe bed 2 of the present invention is embodied in lathe bed inclined-plane away from processing district, the inclined-plane of two saddles 121,122 is relative with anticline lathe bed 2, this structure is moved after making the center of gravity of saddle, flexible slide and the first-class parts of main shaft, when ensureing that flexible slide moves to extreme position, the center of gravity of lathe acts on lathe bed all the time, offsets the tilting moment that cantilever design produces.
In addition, between the stator of linear electric motors and mover, there is very large suction, counteract the moment that lathe produces due to cantilever design, thus improve the rigidity of machine tool chief axis Z-direction.In addition, because linear electric motors have that response is fast, precision is high and the advantage such as good stability, what the motion of saddle and flexible slide all adopted is that linear electric motors carry out Direct driver.
Meanwhile, anticline lathe bed structure of the present invention can also make driving linear electric motors between saddle and lathe bed and line slideway from the impact of the waste gas, dust etc. of processing district, effectively can improve rigidity and the bearing capacity of lathe.In the transmission side control face of the two saddle 121,122 of lathe, the separate straight lines that the present invention adopts the two mover linear electric motors of single stator to carry out two saddle drives and cooperation control, can avoid the mutual interference of two saddle on Long Distances direction, ensure the security of operation of saddle; Adopt two linear electric motors to carry out drive to two flexible slide 61,62 respectively simultaneously, further simplify the drive mechanism of lathe, improve the movement velocity of lathe saddle and flexible slide, acceleration, positioning precision and repetitive positioning accuracy, and save installing space.The large-scale pair of ox head anticline lathe bed electric spark machine bed accessory that linear electric motors of the present invention drive has Long Distances, higher rigidity and bearing capacity and good dynamic characteristic, go for Long Distances, at a high speed, the needs of high accuracy spark-erosion machine tool.
The present invention is a kind of function admirable, the two ox head anticline lathe bed spark-erosion machine tool of convenient and practical high speed and large stroke.
Claims (10)
1. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke, it is characterized in that including base (1), anticline lathe bed (2), two saddles (121,122), two flexible slides (61,62), two main tappings (71,72), first linear electric motors (4), the second linear electric motors (22), 3rd linear electric motors (26), two the first grating scales (81,82), two the second grating scales (15), the first line slideway auxiliary (5), two the second line slideway auxiliaries (91,92), ball-screw (20), wherein base (1) is installed on the ground, anticline lathe bed (2) is fixedly mounted on base (1), two saddles (121, 122) be connected with anticline lathe bed (2) by the first line slideway auxiliary (5), two saddles (121, 122) driven by the first linear electric motors (4), drive two saddles (121, 122) move along the X direction, 2 flexible slides (61, 62) respectively by two the second line slideway auxiliaries (91, 92) with two saddles (121, 122) connect, carry out Movement transmit, one of them flexible slide (62) is connected with one of them saddle (122) by one of them second line slideway auxiliary (92), second linear electric motors (22) drive one of them flexible slide (62) to move along Y2 direction by one of them second line slideway auxiliary (92), another flexible slide (61) is connected with another saddle (121) by another second line slideway auxiliary (91), 3rd linear electric motors (26) drive another flexible slide (61) to move along Y1 direction by another second line slideway auxiliary (91), one of them first grating scale (81) is arranged on one of them flexible slide (61), one of them saddle (121) is provided with grating ruler reading head on the position of corresponding first grating scale (81), another first grating scale (82) is arranged on another flexible slide (62), another saddle (122) installs grating ruler reading head on the position of another the first grating scale (82) corresponding, two the first grating scales (81, 82) two flexible slides (61 are formed with corresponding read head, 62) online position detecting feedback system, realize two flexible slides (61) in Y1 direction, the on-line checkingi of movement position and FEEDBACK CONTROL on Y2 direction, two the second grating scales (15) are cemented on anticline lathe bed (2), the read head of two the second grating scales (15) respectively correspondence is arranged on two saddles (121, 122) on, realize 2 saddles (121 simultaneously, 122) on-line checkingi of movement position in the X direction, main tapping (71) is arranged on flexible slide (61), main tapping (72) is arranged on one of them flexible slide (62), the leading screw of ball-screw-transmission pair (20) is connected with servomotor (19), the nut of ball-screw-transmission pair (20) is fixedly mounted on one of them main tapping (71), servomotor (19) drives ball guide screw nat to rotate, drive one of them main tapping (71) moving along Z1 direction, the drives structure of another main tapping (72) is identical with the drives structure of one of them main tapping (71), is moved along Z2 direction by driven by servomotor.
2. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that above-mentioned two the second line slideway auxiliaries (91,92) are by 2 line slideways and 6 slide block compositions, every root guide rail and 3 slide blocks form 1 moving sets, 2 line slideways of one of them the second line slideway auxiliary (91) are arranged on one of them flexible slide (61) lower surface, 6 upper surfaces being arranged on one of them saddle (121), one of them flexible slide (61) is connected with one of them saddle (121) by one of them second line slideway auxiliary (91), in like manner, 2 guide rails assemblings of another the second line slideway auxiliary (92) are on the lower surface of another flexible slide (62), 6 slide blocks are arranged on the upper surface of another saddle (122), another flexible slide (62) is connected with another saddle (122) by another second line slideway auxiliary (92), the mover of the second linear electric motors (22) is arranged on one of them flexible slide (62), the stator correspondence of the second linear electric motors (22) is arranged on this saddle (122), second linear electric motors (22) drive this flexible slide (62) to move along Y2 direction, the mover of the 3rd linear electric motors (26) is arranged on another flexible slide (61), the stator of the 3rd linear electric motors (26) respectively correspondence is arranged on this another saddle (121), in like manner, the 3rd linear electric motors (26) drive this flexible slide (61) to move along Y1 direction.
3. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that above-mentioned first line slideway auxiliary (5) is made up of 2 line slideways and 8 slide blocks, every root guide rail and 4 slide blocks form 1 moving sets, 2 guide rails assemblings of the first line slideway auxiliary (5), on anticline lathe bed (2), the inclined end face of two saddles (121,122) install 4 slide blocks respectively.
4. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that above-mentioned first linear electric motors (4) are the flat plate type linear motors with the two mover of single stator, two movers of the first linear electric motors (4) are arranged on saddle (121 respectively, 122) on, single stator is arranged on anticline lathe bed (2), two saddles (121 that the single one or two mover linear electric motors of composition drive, 122) kinematic system, two saddles (121 are driven by the first linear electric motors (4), 122) drive and coordinate Servo Control is carried out along the X direction.
5. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that above-mentioned two the second grating scales (15) are cemented in the side of anticline lathe bed (2), the read head of two the second grating scales (15) respectively correspondence is arranged on two saddles (121,122), realizes the on-line checkingi to two saddles (121,122) movement position in the X direction.
6. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that one of them first grating scale (81) in above-mentioned two the first grating scales (81,82) is arranged on the side of one of them flexible slide (61), the upper surface correspondence of this saddle (121) installs grating ruler reading head, another first grating scale (82) is arranged on the side of another flexible slide (62), and the upper surface correspondence of this flexible saddle (122) installs grating ruler reading head.
7. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 1, it is characterized in that above-mentioned two main tappings (71, 72) one of them main tapping (71) in is arranged on one of them flexible slide (61) by one of them main shaft headstock (251), this main shaft headstock (251) consolidation is arranged on this flexible slide (61), servomotor (19) is fixedly mounted on this main shaft headstock (251), Movement transmit is carried out by shaft coupling and ball-screw-transmission pair (20), the leading screw of ball-screw-transmission pair (20) is connected with servomotor (19) by shaft coupling, the nut of ball-screw-transmission pair (20) is fixedly mounted on this main tapping (71), servomotor (19) drives ball guide screw nat to rotate, thus drive this main tapping (71) moving along Z1 direction under line slideway guiding, another main tapping (72) is arranged on another flexible slide (62) by another main shaft headstock (252), this main shaft headstock (252) consolidation is arranged on another flexible slide (62), according to same principle, is moved along Z2 direction by this main tapping of corresponding driven by servomotor (72).
8. the two ox head anticline lathe bed spark-erosion machine tool of the high speed and large stroke according to any one of claim 1 to 7, it is characterized in that the two ends of above-mentioned anticline lathe bed (2) are separately installed with the first extreme position switch (3), 2 the 3rd elastic anti-collision blocks (13) are respectively installed in anticline lathe bed (2) both sides, 3rd elastic anti-collision block (13) prevents two saddles (121,122) from skidding off line slideway (5), plays cushioning effect simultaneously; 2 the second extreme position switches (14) are installed in the relative inner face of above-mentioned 2 saddles (121,122), second elastic anti-collision block (11) is arranged on two saddles (121,122), 2 the second extreme position switches (14) are coordinated to use, avoid 2 saddles (121,122) movement interference in the X direction, play cushioning effect simultaneously; The both sides, front and back of above-mentioned 2 saddles are also provided with the 3rd extreme position switch (17) preventing 2 flexible slides (61,62) over-travel.
9. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 8, it is characterized in that above-mentioned 2 flexible slides (61,62) are also provided with the first elastic anti-collision block (10), first elastic anti-collision block (10) coordinates the 3rd extreme position switch (17) to use, and determines that 2 flexible slides (61,62) are in Y1, Y2 direction up stroke scope.
10. the two ox head anticline lathe bed spark-erosion machine tool of high speed and large stroke according to claim 9, it is characterized in that the inside gusset of above-mentioned 2 flexible slides (61,62) adopts cellular biomimetic features (16), above-mentioned base (1) is installed on the ground by fot screw.
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| CN201410701408.1A CN104439570B (en) | 2014-11-28 | 2014-11-28 | A kind of double ox head anticline lathe bed spark-erosion machine tools of high speed and large stroke |
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| CN105215789A (en) * | 2015-10-29 | 2016-01-06 | 谢进义 | Two main spindle numerical control machining tool and automatic production line |
| CN110625443A (en) * | 2019-09-29 | 2019-12-31 | 北京市机电研究院有限责任公司 | Five-axis linkage numerical control machine tool |
| CN110773826A (en) * | 2019-09-02 | 2020-02-11 | 广东米尔迪克智能机械实业有限公司 | Large-scale double ox head spark machine |
| CN113733063A (en) * | 2021-09-17 | 2021-12-03 | 广东工业大学 | Direct-drive high-speed large-stroke truss robot based on inclined plane support |
| WO2022123711A1 (en) * | 2020-12-10 | 2022-06-16 | Dmg森精機株式会社 | Feeding device |
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