CN206747988U - A kind of numerical control drilling-milling lathe provided with numerical control weakening frame - Google Patents
A kind of numerical control drilling-milling lathe provided with numerical control weakening frame Download PDFInfo
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- CN206747988U CN206747988U CN201720539410.2U CN201720539410U CN206747988U CN 206747988 U CN206747988 U CN 206747988U CN 201720539410 U CN201720539410 U CN 201720539410U CN 206747988 U CN206747988 U CN 206747988U
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Abstract
The utility model provides a kind of numerical control drilling-milling lathe provided with numerical control weakening frame, including numerical control weakening frame (1) and numerical control drilling milling machine (2).The numerical control weakening that the utility model uses, which is set up, to be had Y framves slide, Z framves slide plate, the orthogonal plate of frame and helps arm, described to help arm to be provided with handrail hole；Numerical control drilling milling machine is provided with lathe bed, column, workbench, spindle motor, X-axis, Y-axis and Z axis；The berth for the numerical control weakening frame that berths is provided with the Z axis of numerical control drilling milling machine；Controlled during deep hole machining, numerical control weakening frame deploys at the berth, helps arm to help drilling rod to carry out deep hole machining, is shaken by absorbing string caused by the drilling rod of rotation at a high speed, prevents resonance vibration from avoiding drilling rod from fractureing；Deep hole machining finishes, and numerical control weakening frame is collapsed at the berth；By setting retractable numerical control weakening frame to help the technical scheme of depth drill, when the numerical control drilling-milling machine tooling is provided with the workpiece of deep hole, the purpose for improving efficiency, improving precision, reducing cost is reached.
Description
Technical field
It the utility model is related to a kind of numerically controlled machine tool, in particular to bore Milling Machining, deep hole drilling for metal cutting
A kind of numerical control drilling-milling lathe provided with numerical control weakening frame of processing.
Background technology
Numerical control drilling-milling lathe is a kind of metal cutting process lathe for possessing milling and drilling function；Deep hole refer to hole depth with
The ratio between aperture is more than more than 20 times of hole；
Mould processing needs milling type face and drills through deep hole, and the following two methods of generally use carry out brill Milling Machining；
1st, extension set is processed, i.e. the Milling Process of die face is first completed on CNC milling machine, and then mould is moved to
On deep hole drilling machine deep hole is drilled through with deep hole drill；
2nd, unit is processed, i.e. completes milling type face and Drilling operation in the lump on numerical control drilling-milling lathe；Due to deep hole drill
It is thin and grow, if numerical control drilling-milling lathe directly drills through deep hole using deep hole drill, the drilling rod of deep hole drill when high speed rotates meeting because
String, which shakes, triggers resonance vibration the drilling rod of deep hole drill is fractureed, and adds therefore, prior art carries out deep hole on numerical control drilling-milling lathe
Man-hour uses subsection hole-drilling, i.e. first drills through shallow bore hole with quarter butt drill bit, then changes middle long rod bit and take over and deepen shallow bore hole, finally makes
Deep hole machining is completed with deep hole drill；
Above-mentioned, extension set processing, because needing secondary clamping centering, therefore efficiency is low, accumulation of error low precision, process equipment and people
Work cost is high；Unit is processed, and because needing segmental machining deep hole, therefore efficiency is low, and cost is high；Therefore, prior art exist efficiency it is low,
The problem of low precision, high cost and deficiency.
The content of the invention
For the above-mentioned problems of the prior art and deficiency, the utility model is used by numerical control weakening frame and numerical control drilling-milling
Mechanism into device, wherein, numerical control weakening set up have Y framves slide, Z framves slide plate, the orthogonal plate of frame and help arm, it is described help arm be provided with help
Rod aperture；Numerical control drilling milling machine is provided with lathe bed, column, workbench, spindle motor, X-axis, Y-axis and Z axis；Spindle motor is located at the Z of Z axis
The right-hand member of slide plate；Left part before the Z slide plates is provided with the berth for the numerical control weakening frame that berths；Numerical control weakening frame is arranged on numerical control drilling
At the Z axis of milling machine, Y framves slide is fixedly connected on the leading flank of the Z slide plates of the Z axis along Y-direction, and Z framves slide plate is through the orthogonal plate of frame and Y
Frame slide is slidably connected, and is provided between Y framves slide and the orthogonal plate of frame by roller guide rail is secondary, ball-screw is secondary and servomotor is formed
Y-direction digital driving mechanism abbreviation frame Y machines, during work, the orthogonal plate of the frame Y machine bogies is moved based on Y frame slides along Y-direction；
The Z-direction numerical control driving machine being made up of roller guide rail pair, ball-screw pair and servomotor is provided between the orthogonal plate of frame and Z frame slide plates
Structure abbreviation frame Z machines, during work, the frame Z machines driving Z framves slide plate is moved based on the orthogonal plate of frame along Z-direction；Arm protrusion is helped to be located at Z framves
Slide plate trailing flank it is following, handrail hole position is in helping arm rear portion；In face of present apparatus front view, the Y-direction is left and right directions, the X
To being above-below direction for fore-and-aft direction, the Z-direction；Initial state, numerical control weakening frame are located at the berth；
When carrying out Milling Process, above workbench, numerical control weakening frame is located at the berth workpiece fixed clamp, by
Control, the workbench that X-axis, Y-axis dragging carry workpiece make the target-seeking fortune work(of plane coordinates track, are driven spindle motor by Z axis and cut
Cut the target-seeking fortune work(that cutlery is made above and below vertical coordinate and carry out Milling Process；
When carrying out deep hole machining, controlled, numerical control weakening frame deploy at the berth, frame Z machines driving Z framves slide plate to
Under be moved to the lower end for helping arm to be less than spindle motor, afterwards, the orthogonal plate of the frame Y machine bogies and carry Z framves slide plate to
The axis coinciding to the center in the handrail hole and spindle motor is moved right, deep hole drill is connected with spindle motor, handrail hole
The middle part for the drilling rod for being clamped in deep hole drill being slided, preventing the drilling rod from trembleing during for drilling；The Z axis driving Z is slided
Plate and spindle motor move down, and spindle motor drives deep hole drill to carry out deep hole machining, during deep hole machining, with depth
Drill progressively gos deep into workpiece, the controlled movement of Z frame slide plates, make it is described help arm help all the time expose to spindle motor and workpiece it
Between the drilling rod middle part；Deep hole machining finishes, and the frame Y machines and frame Z machines driving numerical control weakening frame collapse to the pool
Resetted at position；The present apparatus is by setting retractable numerical control weakening frame to help the drilling rod of deep hole drill to carry out the technical side of depth drill
Case, there is provided a kind of numerical control drilling-milling lathe provided with numerical control weakening frame, it is intended to make numerical control drilling-milling lathe be directed to provided with deep hole workpiece
Milling Machining is bored, reaches the purpose for improving efficiency, improving precision, reducing cost.
What the purpose of this utility model was realized in：A kind of numerical control drilling-milling lathe provided with numerical control weakening frame, including number
Weakening frame and numerical control drilling milling machine are controlled, wherein：Described numerical control weakening frame by Y framves slide, Z framves slide plate, the orthogonal plate of frame, help arm structure
Into the Y framves slide is the steel components of rectangular plate-like, left and right directions is provided with before Y frame slides, by roller guide rail pair, rolling
The digital driving mechanism abbreviation frame Y machines that dynamic lead screw pair and servomotor are formed；The orthogonal plate of frame is the steel structure of rectangular plate-like
Part, above-below direction is provided with before the orthogonal plate of frame, is driven by the numerical control that roller guide rail is secondary, ball-screw is secondary and servomotor is formed
Mechanism abbreviation frame Z machines；The Z framves slide plate is the steel components of rectangular plate-like, and following be provided with behind Z frame slide plates is protruded backward
Trapezoidal steel plate be referred to as helping arm, it is described to help the back center of arm to be provided with the circular through hole of above-below direction to be referred to as handrail hole, it is described to help
The right side hole wall of rod aperture is provided with is referred to as bealock with the rectangular aperture for helping the right side of arm to communicate；The secondary roller guide rail is to be in by section
What the guide rail of V-type rolling channel and roller stand equipped with roller were formed is used to carry object roller track element for linear motion；Institute
It is that the machine for being used to convert rotational motion into linear motion formed is screwed by ball-screw and ball nut that it is secondary, which to state ball-screw,
Tool actuated element；The servomotor AC synchronous servomotor；
Be connected behind the orthogonal plate of frame through the frame Y machines with Y frame slides, behind Z frame slide plates top through the frame Z machines with
Connected before the orthogonal plate of frame；
Described numerical control drilling milling machine is made up of lathe bed, column, workbench, spindle motor, X-axis, Y-axis, Z axis, Z slide plates, its
In, the Z slide plates is are driven by Z axis, the cast iron matter component of rectangular block shape moving up and down, and spindle motor is located at Z slide plates
Right part center, the left part before Z slide plates are provided with the numerical control weakening rack position that is used to berthing and are referred to as berth；
Numerical control weakening frame is arranged at the Z axis of numerical control drilling milling machine, is fixedly connected on the institute of Z axis behind Y frame slides along Y-direction
The leading flank of Z slide plates, initial state are stated, numerical control weakening frame is located at the berth.
In face of present apparatus front view, the Y-direction is left and right directions, and the X is to being upper and lower for fore-and-aft direction, the Z-direction
To.
Said structure statement direction face be divided into up, down, left, right, front, rear side, wherein, before be in face of present apparatus main view
The face of figure, behind be and the above relative face.
Working principle and beneficial effect
When carrying out Milling Process, above workbench, numerical control weakening frame is located at the berth workpiece fixed clamp, by
Control, the workbench that X-axis, Y-axis dragging carry workpiece make the target-seeking fortune work(of plane coordinates track, are driven spindle motor by Z axis and cut
Cut the target-seeking fortune work(that cutlery is made above and below vertical coordinate and carry out Milling Process；
When carrying out deep hole machining, deep hole drill is connected with spindle motor, controlled, numerical control weakening frame is from exhibition at the berth
Open, the frame Z machines driving Z frame slide plates are moved downward to the lower end for helping arm to be less than spindle motor, and afterwards, the frame Y machines drive
The orthogonal plate of moving frame simultaneously carries Z frame slide plates and moved right and enter the handrail hole to the drilling rod of deep hole drill along the bealock, now
The middle part for the drilling rod for being clamped in deep hole drill, institute are slided in the center in the handrail hole and the axis coinciding of spindle motor, handrail hole
State Z axis driving Z slide plates and spindle motor moves down, spindle motor drives deep hole drill to carry out deep hole machining；Slide in handrail hole
Drilling rod is helped, is shaken by absorbing string caused by the drilling rod of rotation at a high speed, the generation of resonance vibration is prevented, so as to avoid drilling rod
Fracture；During deep hole machining, as deep hole drill progressively gos deep into workpiece, the controlled Z-direction movement of Z frame slide plates, make described to help arm
All the time help and exposing to the middle part of the drilling rod between spindle motor and workpiece；Deep hole machining finishes, frame Y machines and described
Frame Z machines driving numerical control weakening frame, which is collapsed at the berth, to be resetted.
The present apparatus makes numerical control drilling by setting retractable numerical control weakening frame to help the drilling rod of deep hole drill to carry out depth drill
Milling machine avoids the drawbacks of subsection hole-drilling, numerical control drilling-milling lathe is directed to the brill Milling Machining provided with deep hole workpiece, improves efficiency,
Precision is improved, reduces cost.
It is above-mentioned, the utility model use by numerical control weakening frame and numerical control drill milling mechanism into device, wherein, numerical control weakening frame
Provided with Y framves slide, Z framves slide plate, the orthogonal plate of frame and arm is helped, it is described to help arm to be provided with handrail hole；Numerical control drilling milling machine is provided with lathe bed, stood
Post, workbench, spindle motor, X-axis, Y-axis and Z axis；Spindle motor is located at the right-hand member of the Z slide plates of Z axis；Before the Z slide plates
Left part is provided with the berth for the numerical control weakening frame that berths；Numerical control weakening frame is arranged at the Z axis of numerical control drilling milling machine, and Y frame slides are consolidated along Y-direction
Surely the leading flank of the Z slide plates of the Z axis is connected to, Z framves slide plate is slidably connected through the orthogonal plate of frame and Y frame slides, Y framves slide and frame
The Y-direction digital driving mechanism abbreviation frame Y being made up of roller guide rail pair, ball-screw pair and servomotor is provided between orthogonal plate
Machine, during work, the orthogonal plate of the frame Y machine bogies is moved based on Y frame slides along Y-direction；It is provided between the orthogonal plate of frame and Z frame slide plates
By the Z-direction digital driving mechanism abbreviation frame Z machines that roller guide rail is secondary, ball-screw is secondary and servomotor is formed, during work, the frame
Z machines driving Z framves slide plate is moved based on the orthogonal plate of frame along Z-direction；Arm protrusion is helped to be located at following, the handrail hole position of Z frame slide plates trailing flank
In helping arm rear portion；In face of present apparatus front view, the Y-direction is left and right directions, and the X is to being upper and lower for fore-and-aft direction, the Z-direction
Direction；Initial state, numerical control weakening frame are located at the berth；
When carrying out Milling Process, above workbench, numerical control weakening frame is located at the berth workpiece fixed clamp, by
Control, the workbench that X-axis, Y-axis dragging carry workpiece make the target-seeking fortune work(of plane coordinates track, are driven spindle motor by Z axis and cut
Cut the target-seeking fortune work(that cutlery is made above and below vertical coordinate and carry out Milling Process；
When carrying out deep hole machining, controlled, numerical control weakening frame deploy at the berth, frame Z machines driving Z framves slide plate to
Under be moved to the lower end for helping arm to be less than spindle motor, afterwards, the orthogonal plate of the frame Y machine bogies and carry Z framves slide plate to
The axis coinciding to the center in the handrail hole and spindle motor is moved right, deep hole drill is connected with spindle motor, handrail hole
The middle part for the drilling rod for being clamped in deep hole drill being slided, preventing the drilling rod from trembleing during for drilling；The Z axis driving Z is slided
Plate and spindle motor move down, and spindle motor drives deep hole drill to carry out deep hole machining, during deep hole machining, with depth
Drill progressively gos deep into workpiece, the controlled movement of Z frame slide plates, make it is described help arm help all the time expose to spindle motor and workpiece it
Between the drilling rod middle part；Deep hole machining finishes, and the frame Y machines and frame Z machines driving numerical control weakening frame collapse to the pool
Resetted at position；The present apparatus is by setting retractable numerical control weakening frame to help the drilling rod of deep hole drill to carry out the technical side of depth drill
Case, overcome prior art and the problem of low efficiency, low precision, high cost and deficiency be present, the one kind provided disappears provided with numerical control
Shake the numerical control drilling-milling lathe of frame, when making numerical control drilling-milling lathe bore Milling Machining to be provided with deep hole workpiece, reached raising efficiency, improve it is smart
Spend, reduce the purpose of cost.
Brief description of the drawings
Fig. 1 is a kind of numerical control drilling-milling lathe provided with numerical control weakening frame of the present utility model, is deployed in numerical control weakening frame 1
The main structure diagram of tense；
Fig. 2 is the axonometric schematic diagram of Fig. 1 states；
Fig. 3 is a kind of numerical control drilling-milling lathe provided with numerical control weakening frame of the present utility model, is collapsed in numerical control weakening frame 1
Reset the schematic front view of tense；
Fig. 4 is the axonometric schematic diagram of Fig. 3 states.
Embodiment in below in conjunction with the accompanying drawings is described in further detail to the utility model, but should not be construed as to this reality
With new any restrictions.
In figure：Numerical control weakening frame 1, Y framves slide 12, Z framves slide plate 13, the orthogonal plate 14 of frame, help arm 15, handrail hole 151, numerical control
Drilling milling machine 2, lathe bed 21, column 22, workbench 23, spindle motor 24, X-axis 25, Y-axis 26, Z axis 27, Z slide plates 271, berth
2711。
Embodiment
Refering to Fig. 1~Fig. 4, a kind of numerical control drilling-milling lathe provided with numerical control weakening frame of the present utility model, including numerical control disappear
Shake frame 1 and numerical control drilling milling machine 2, wherein：Described numerical control weakening frame 1 by Y framves slide 12, Z framves slide plate 13, the orthogonal plate 14 of frame, help
Arm 15 is formed, and the Y framves slide 12 is the steel components of rectangular plate-like, left and right directions is provided with before Y framves slide 12, by roller
The digital driving mechanism abbreviation frame Y machines that guideway, ball-screw pair and servomotor are formed；The orthogonal plate 14 of frame is rectangular slab
The steel components of shape, above-below direction is provided with before the orthogonal plate 14 of frame, by roller guide rail is secondary, ball-screw is secondary and servomotor structure
Into digital driving mechanism abbreviation frame Z machines；The Z framves slide plate 13 is the steel components of rectangular plate-like, behind Z framves slide plate 13
The following trapezoidal steel plate protruded backward that is provided with is referred to as helping arm 15, and the back center for helping arm 15 is provided with the logical of above-below direction circle
Hole is referred to as handrail hole 151, and the right side hole wall in the handrail hole 151 is provided with is referred to as a strip of land between hills with the rectangular aperture for helping the right side of arm 15 to communicate
Mouthful；It is to carry object by being used for of forming of the guide rail of the V-shaped raceway in section and the roller stand equipped with roller that the roller guide rail is secondary
Roller track element for linear motion；The ball-screw is secondary will to screw being used for of forming by ball-screw and ball nut
Rotary motion is converted to the mechanical transmission component of linear motion；The servomotor AC synchronous servomotor；
It is connected behind the orthogonal plate 14 of frame through the frame Y machines with Y framves slide 12, behind Z framves slide plate 13 described in the warp of top
Connected before frame Z machines plate 14 orthogonal with frame；
Described numerical control drilling milling machine 2 is by lathe bed 21, column 22, workbench 23, spindle motor 24, X-axis 25, Y-axis 26, Z axis
27th, Z slide plates 271 are formed, wherein, the Z slide plates 271 is are driven by Z axis 27, the cast iron texture of rectangular block shape moving up and down
Part, spindle motor 24 are located at the right part center of Z slide plates 271, and the left part before Z slide plates 271, which is provided with, is used for the numerical control weakening frame 1 that berths
Position is referred to as berth 2711；
Numerical control weakening frame 1 is arranged at the Z axis 27 of numerical control drilling milling machine 2, and Z is fixedly connected on along Y-direction behind Y framves slide 12
The leading flank of the Z slide plates 271 of axle 27, initial state, numerical control weakening frame 1 are located at the berth 2711.
In face of present apparatus front view, the Y-direction is left and right directions, and the X is to being upper and lower for fore-and-aft direction, the Z-direction
To.
Said structure statement direction face be divided into up, down, left, right, front, rear side, wherein, before be in face of present apparatus main view
The face of figure, behind be and the above relative face.
Working principle and beneficial effect
When carrying out Milling Process, for workpiece fixed clamp above workbench 23, numerical control weakening frame 1 is located at the berth
Controlled at 2711, X-axis 25, Y-axis 26, which drag, to be carried the workbench 23 of workpiece and makees the target-seeking fortune work(of plane coordinates track, by Z axis 27
Drive spindle motor 24 and cut the target-seeking fortune work(that cutlery is made above and below vertical coordinate and carry out Milling Process；
When carrying out deep hole machining, deep hole drill is connected with spindle motor 24, controlled, numerical control weakening frame 1 is from the berth
Deploying at 2711, the frame Z machines driving Z framves slide plate 13 is moved downward to the lower end for helping arm 15 to be less than spindle motor 24, it
Afterwards, the orthogonal plate 14 of the frame Y machine bogies and carry Z framves slide plate 13 and move right to enter to the drilling rod of deep hole drill along the bealock
Enter the handrail hole 151, now the center in the handrail hole 151 and the axis coinciding of spindle motor 24, the slip clamp of handrail hole 151
Hold and drive Z slide plates 271 and spindle motor 24 to move down in the middle part of the drilling rod of deep hole drill, the Z axis 27, spindle motor 24
Deep hole drill is driven to carry out deep hole machining；Handrail hole 151 is slided and helps drilling rod, produced by the drilling rod by absorbing high speed rotation
String shake, prevent resonance vibration generation, so as to avoid drilling rod from fractureing；During deep hole machining, with deep hole drill progressively
Go deep into workpiece, the movement of 13 controlled Z-direction of Z framves slide plate, make it is described help arm 15 help all the time expose to spindle motor 24 and workpiece it
Between the drilling rod middle part；Deep hole machining finishes, and the frame Y machines and frame Z machines driving numerical control weakening frame 1 collapse to the pool
Resetted at position 2711.
The present apparatus makes numerical control by setting retractable numerical control weakening frame 1 to help the drilling rod of deep hole drill to carry out depth drill
The drawbacks of drilling milling machine 2 avoids subsection hole-drilling, numerical control drilling-milling lathe is directed to the brill Milling Machining provided with deep hole workpiece, improve effect
Rate, precision is improved, reduce cost.
Claims (1)
1. a kind of numerical control drilling-milling lathe provided with numerical control weakening frame, including numerical control weakening frame (1) and numerical control drilling milling machine (2), it is special
Sign is：Described numerical control weakening frame (1) by Y framves slide (12), Z framves slide plate (13), the orthogonal plate of frame (14), help arm (15) structure
Into the Y framves slide (12) is the steel components of rectangular plate-like, is provided with left and right directions before Y framves slide (12), is led by roller
The digital driving mechanism abbreviation frame Y machines that rail is secondary, ball-screw is secondary and servomotor is formed；The orthogonal plate of frame (14) is rectangular slab
The steel components of shape, above-below direction is provided with before the orthogonal plate of frame (14), by roller guide rail is secondary, ball-screw is secondary and servomotor
The digital driving mechanism abbreviation frame Z machines of composition；The Z framves slide plate (13) is the steel components of rectangular plate-like, Z framves slide plate (13)
The following trapezoidal steel plate protruded backward that is provided with below is referred to as helping arm (15), and the back center for helping arm (15) is provided with upper and lower
It is referred to as handrail hole (151) to the through hole of circle, the right side hole wall of the handrail hole (151) is provided with helping the right side of arm (15) to communicate
Rectangular aperture be referred to as bealock；The secondary roller guide rail is by the guide rail of the V-shaped raceway in section and the roller framework equipped with roller
Into be used for carry object roller track element for linear motion；The secondary ball-screw is by ball-screw and ball nut
Screw the mechanical transmission component for being used to convert rotational motion into linear motion of composition；The servomotor AC synchronous servo
Motor；
It is connected behind the orthogonal plate of frame (14) through the frame Y machines with Y framves slide (12), top is through institute behind Z framves slide plate (13)
State and connected before frame Z machines plate (14) orthogonal with frame；
Described numerical control drilling milling machine (2) is by lathe bed (21), column (22), workbench (23), spindle motor (24), X-axis (25), Y
Axle (26), Z axis (27), Z slide plates (271) are formed, wherein, the Z slide plates (271) are to be driven by Z axis (27), be moving up and down
The cast iron matter component of rectangular block shape, spindle motor (24) are located at the right part center of Z slide plates (271), the left side before Z slide plates (271)
Portion is provided with is referred to as berth (2711) for numerical control weakening frame (1) position of berthing；
Numerical control weakening frame (1) is arranged on Z axis (27) place of numerical control drilling milling machine (2), fixes and connects along Y-direction behind Y framves slide (12)
The leading flank of the Z slide plates (271) of Z axis (27), initial state are connected on, numerical control weakening frame (1) is located at the berth (2711)
Place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539410.2U CN206747988U (en) | 2017-05-02 | 2017-05-02 | A kind of numerical control drilling-milling lathe provided with numerical control weakening frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539410.2U CN206747988U (en) | 2017-05-02 | 2017-05-02 | A kind of numerical control drilling-milling lathe provided with numerical control weakening frame |
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| Publication Number | Publication Date |
|---|---|
| CN206747988U true CN206747988U (en) | 2017-12-15 |
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ID=60618446
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| CN201720539410.2U Expired - Fee Related CN206747988U (en) | 2017-05-02 | 2017-05-02 | A kind of numerical control drilling-milling lathe provided with numerical control weakening frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578436A (en) * | 2019-01-25 | 2019-04-05 | 哈尔滨工业大学 | A kind of high-precision is without friction vertical motion guide rail |
-
2017
- 2017-05-02 CN CN201720539410.2U patent/CN206747988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578436A (en) * | 2019-01-25 | 2019-04-05 | 哈尔滨工业大学 | A kind of high-precision is without friction vertical motion guide rail |
| CN109578436B (en) * | 2019-01-25 | 2020-03-13 | 哈尔滨工业大学 | High-precision friction-free vertical motion guide rail |
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Granted publication date: 20171215 Termination date: 20190502 |