CN108581583B - Ball-screw pre-stretching amount controllable adjustment device - Google Patents
Ball-screw pre-stretching amount controllable adjustment device Download PDFInfo
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- CN108581583B CN108581583B CN201810849603.7A CN201810849603A CN108581583B CN 108581583 B CN108581583 B CN 108581583B CN 201810849603 A CN201810849603 A CN 201810849603A CN 108581583 B CN108581583 B CN 108581583B
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- wire
- screw
- lead screw
- clamp system
- ball
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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
- 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
- B23Q5/404—Screw bearings therefor
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention belongs to mechanical manufacturing fields, specifically disclose ball-screw pre-stretching amount controllable adjustment device, including drawing mechanism and clamp system, clamp system includes the fixing seat that lead screw two sides are arranged in, it is slid vertically in fixing seat and is connected with support base, several one metal wires are fixed between support base in two fixing seats, it is slid vertically on support base and is connected with several along the equally distributed slider of lead screw length direction, slider is tapered, slider passes through several one metal wires and big stock wire is divided into several shallow bid wires that can be caught in screw rod screw channel, the radical of wire is identical in per share wire.The part of screw rod can be pre-stretched using the present invention.
Description
Technical field
The present invention relates to mechanical manufacturing fields, and in particular to ball-screw pre-stretching amount controllable adjustment device.
Background technique
Ball-screw is the basic mechanical driving device of NC machine tool feed system, and precision will directly affect numerically-controlled machine tool
Machining accuracy.Ball-screw during the work time, due between lead screw and ball frictional force effect, ball-screw work when
It can generate heat, and lead screw fever can expand deformation, to increase lead, influence its transmission and positioning accuracy.
With the continuous development of industry manufacture, enterprise is higher and higher to the requirement on machining accuracy of lathe, therefore to improve machine
The precision of bed, it is necessary to the thermal expansion of lead screw be compensated, in existing numerically-controlled machine tool device structure, ball-screw is usual
Using the mounting means installation that both ends are fixed, i.e., it is mounted on the base by bearings at both ends seat to be installed.
In order to compensate for the thermal expansion length of lead screw, pre-stretching operation generally is carried out to lead screw in advance, in the prior art to lead screw
There are two types of the modes being pre-stretched, and one is the fixed supports to one end to apply pulling force, and lead screw is stretched to required length
Degree, another kind are to apply pulling force to the fixed support of one end, however above two mode is integrally stretched to lead screw,
The screw rod of lead screw and smooth bar part are stretched, the part of lead screw cannot be stretched.
Summary of the invention
The purpose of the present invention is to provide ball-screw pre-stretching amount controllable adjustment devices, can carry out to the part of screw rod pre-
It stretches.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Ball-screw pre-stretching amount controllable adjustment device, including drawing mechanism and clamp system, clamp system include setting
Fixing seat in lead screw two sides slides vertically in fixing seat and is connected with support base, solid between the support base in two fixing seats
Surely there are several one metal wires, slid vertically on support base and be connected with several along the equally distributed isolation of lead screw length direction
Body, slider is tapered, and slider passes through several one metal wires and is divided into several shallow bids that can be caught in screw rod screw channel
Wire, the radical of wire is identical in per share wire.
The principle of this programme is:
For being clamped to the screw rod of lead screw, drawing mechanism presss from both sides clamp system for being pre-stretched to lead screw end
In tight mechanism, support construction of the fixing seat as support base, two support bases are used to fix wire, on support base it is each every
The in vitro wire for being used to for the wire of big stock being isolated into multiple shallow bids drives wire close when support base vertical motion
Screw rod moves, and the spacing between each stock wire is exactly the spacing between screw rod screw channel, therefore each stock wire can block just
Enter in each screw channel of screw rod, the radical of suitable wire is selected according to the width of screw rod screw channel and depth, so that each spiral shell
It is filled completely by wire just in slot, since slider is tapered, wire is pushed against on isolation body sidewall, when slider is vertical
After movement, the spacing between each stock wire changes, to be adapted to the screw pitch width of different screw rods.
Following technical effect can be reached using this programme:
1, it is caught in screw rod screw channel by wire, realization clamps screw rod, is caught in screw rod screw channel using more one metal wires
The interior clamping for realizing screw rod, more common stress of one metal wire can bear biggish load, be not easy to beat between wire and screw rod
Sliding, clamping effect is good, then is stretched through drawing mechanism, therefore is able to achieve the local elongation of screw rod.
2, the radical that wire in per share wire is selected according to the screw channel width of screw rod and depth enables screw channel golden
It is full to belong to silk filling, therefore can be suitably used for different lead screw screw channel width and depth, it is applied widely.
3, the spacing between each stock wire can be adjusted by adjusting the height of slider, adapted in different screw rod spiral shells
Away from width, the further expansion scope of application.
Further, wire is made of memory alloy material.Memory alloy material matter is soft, when wire is pushed against screw rod
When screw channel inner wall, wire can be fitted closely with screw rod screw channel inner wall, increase the forced area of screw rod screw channel inner wall and wire,
Avoid the problems in stress collection.
Further, wire is connected with strainer.After increasing due to the spacing of adjacent two strands of wires, the tensioning of wire
Power increases, and after spacing reduces, the tensile force of wire reduces, after strainer can be such that the spacing of adjacent two strands of wires changes,
The tensile force of wire remains unchanged, therefore wire remains unchanged the clamping force of screw rod screw channel.
Further, strainer includes the tensioning wheel being rotatably connected on bearing block, and wire, which is fixed and is wrapped in, to be opened
On bearing up pulley.It is rotated forward by tensioning wheel, drives wire to be wrapped on tensioning wheel, realize the tensioning of wire；It is anti-by tensioning wheel
Turn, drives wire gradually to release from tensioning wheel, realize loosening for wire.
Further, lead screw two sides are respectively equipped with the sliding slot extended along lead screw length direction, two fixing seats company of sliding respectively
It connects in two sliding slots, cylinder is further fixed between two sliding slots, two fixing seats are fixedly connected with the output rod of cylinder respectively.
It is elongated or shortened by cylinder output rod, two fixing seats can be driven to slide in two sliding slots respectively, to realize to screw rod
The clamping of each different parts.
Further, the support base number in fixing seat is two, and two support bases in fixing seat are vertically distributed, Gu
Two support bases in reservation are detachably connected.Wire on two support bases can screw channel and following table to the upper surface of screw rod
The screw channel in face carries out clamping, more preferable to the clamping effect of screw rod.
Detailed description of the invention
Fig. 1 is the main view of the removing clamp system of the embodiment of the present invention；
Fig. 2 is the top view of clamp system in the embodiment of the present invention (upper clamping mechanism is not drawn into)；
Fig. 3 is the partial enlarged view of part A in Fig. 2.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description include: lathe 100, screw rod 1, screw channel 101, bearing block 2, high pressure air cavity 20,
Auxiliary push-rod 201, step 200, bearing group 3, pre-stretching cylinder 4, sliding slot 5, fixing seat 6, wire 7, wire spool 8, support base
9, drive rod 10, insulated column 11.
As depicted in figs. 1 and 2, the ball-screw pre-stretching amount controllable adjustment device of the present embodiment, including drawing mechanism and
Clamp system, lead screw both ends are mounted on lathe 100 by bearing group 3 and bearing block 2, specific mounting means are as follows: bearing group 3 is solid
It is scheduled on lead screw end, bearing block 2 is fixedly mounted on lathe 100, and bearing group 3 is mounted in bearing block 2, and drawing mechanism includes point
The pre-stretching cylinder 4 and high pressure air cavity 20 of 2 two sides of Left hand bearing block be not set, output rod and the left side of cylinder 4 are pre-stretched
Bearing block 2 is fixedly connected, and an auxiliary push-rod 201 is slidably connected in the gas outlet of high pressure air cavity 20, auxiliary push-rod 201 is freely
End is fixedly connected with the bearing block 2 in left side, and lathe 100 is equipped with a step 200, the left side of the bearing block 2 on right side and platform
The right side of rank 200 offsets.
In conjunction with shown in Fig. 2 and Fig. 3, clamp system includes the sliding slot 5 for being mounted on 1 two sides of screw rod, and two sliding slots 5 are and screw rod
1 is parallel, and fixing seat 6 is slidably connected in sliding slot 5, adjusting cylinder is further fixed between two sliding slots 5, two fixing seats 6 are divided
It is not fixedly connected with the output rod for adjusting cylinder.Upper clamping mechanism and lower clamp system, upper clamping are equipped between two fixing seats 6
Mechanism is located at 1 top of screw rod, and lower clamp system is located at 1 lower section of screw rod, and upper clamping mechanism is identical with the structure of lower clamp system, this
The structure for sentencing lower clamp system is illustrated, and lower clamp system includes two support bases 9, and two support bases 9 are vertical sliding respectively
It is dynamic to be connected in two fixing seats 6, and be separately installed with a hydraulic cylinder in two fixing seats 6 and be respectively used to two supports of driving
The vertical motion of seat 9 is connected with the big stock wire 7 that more one metal wires 7 form between two support bases 9, and wire 7 is using memory
Alloy material is made, and a wire spool 8 is rotatably connected on two support bases 9, and the both ends of wire 7 wind respectively and fix
On two wire spools 8, the tensioning of wire 7 is able to achieve by the positive and negative rotation of wire spool 8 and is loosened.It is also perpendicular on support base 9
To the drive rod 10 for slidably connecting a transverse direction, multiple vertical insulated columns 11 are fixed on drive rod 10, insulated column 11 is equal
Between support base 9 and screw rod 1, insulated column 11 is in up big and down small round table-like, and multiple insulated columns 11 are along 1 length direction of screw rod
It is uniformly distributed, multiple insulated columns 11 both pass through more one metal wires 7, the wire 7 of big stock are separated into the wire 7 of shallow bid, often
Stock wire 77 radical of wire it is all the same, wire 7 is pushed against on the side wall of insulated column 11, thus each stock wire 7 it
Between spacing it is identical.
Upper clamping mechanism is identical as lower clamp system, and 9 bottom of support base in upper clamping mechanism offers a rectangular column,
The rectangular opening that can cooperate with rectangular column, upper clamping mechanism and lower clamping machine are equipped at the top of support base 9 in lower clamp system
Assembly method between structure are as follows: the rectangular column of 9 bottom of support base in upper clamping mechanism is inserted into the support base 9 in lower clamp system
Connection in the rectangular opening at top, i.e., between realization upper clamping mechanism and lower clamp system.
When being pre-stretched to ball screw 1, first screw rod 1 is clamped using clamp system, the concrete mode of clamping
It is as follows: open the switch for adjusting cylinder, adjust cylinder and two fixing seats 6 is driven to slide in two sliding slots 5 respectively, make two it is solid
Reservation 6 moves to the position that screw rod 1 needs to clamp, and is selected in per share wire 7 according to the width of 1 screw channel 101 of screw rod and depth
The radical of wire 7 so that per share wire 7 just can fill the screw channel 101 of screw rod 1 completely, and adjusts the perpendicular of drive rod 10
Straight height, so that the spacing between each stock wire 7 is equal with the screw pitch of screw rod 1, is then turned on the switch of hydraulic cylinder, hydraulic cylinder band
Support base 9 in dynamic upper clamping mechanism moves upwards, so that each stock wire 7 moves closer to screw rod 1, final each stock wire 7
Just it is caught in each screw channel 101 of screw rod 1, similarly, each stock wire 7 in lower clamp system moves downward also to be caught in just
In each screw channel 101 of screw rod 1, the upper and lower surfaces of screw rod 1 are clamped, and clamping effect is good.At this point, opening prestretching
The switch of cylinder 4 is stretched, pre-stretching 4 output rod of cylinder shortens, and drives the bearing block 2 in left side to move downward, due to 1 middle part quilt of screw rod
Clamp system clamps, while the bearing block 2 on right side is fixed by step 200, to realize the left end to clamp system portion to screw rod 1
The pre-stretching divided, then gas is filled with into high pressure air cavity 20, air pressure increases in high pressure air cavity 20, and auxiliary push-rod 201 is driven to push
The bearing block 2 in left side continues to move downward, according to the pre-stretching amount for the adjustable lead screw of amount for being filled with gas in high pressure air cavity 20.
This programme can stretch the part of screw rod 1 compared with traditional screw rod 1 is pre-stretched, due to using more gold
Belong to silk 7 and be caught in the clamping for realizing screw rod 1 in the screw channel 101 of screw rod 1, the common stress of more one metal wires 7 can bear biggish lotus
It carries, and since wire 7 is stuck in the screw channel 101 of screw rod 1, is not easy to skid between wire 7 and screw rod 1, clamping effect
It is good.This programme can also select the radical of wire 7 in per share wire 7 according to 101 width of screw channel and depth of screw rod 1, so that
Screw channel 101 can be filled completely by wire 7, therefore can be suitably used for different 101 width of lead screw screw channel and depth, by adjusting isolation
The height of column 11 can adjust the spacing between each stock wire 7, adapt in different 1 screw pitch width of screw rod, applied widely.
When being pre-stretched to lead screw, since wire 7 is made of memory alloy material, memory alloy material matter is soft, works as metal
When silk 7 is pushed against 1 101 inner wall of screw channel of screw rod, wire 7 can be fitted closely with 1 screw channel of screw rod, 101 inner wall, increase 1 screw channel of screw rod
The forced area of 101 inner walls and wire 7 avoids the problems in stress collection.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (3)
1. ball-screw pre-stretching amount controllable adjustment method, it is characterised in that: can control using a kind of ball-screw pre-stretching amount
Regulating device, the device include drawing mechanism and clamp system, and clamp system includes the sliding slot for being mounted on lead screw two sides, two sliding slots
It is parallel with lead screw, fixing seat is slidably connected in sliding slot, and adjusting cylinder, two fixing seats are further fixed between two sliding slots
It is fixedly connected respectively with the output rod for adjusting cylinder；The identical upper clamping mechanism of structure and lower clamping are equipped between two fixing seats
Mechanism, upper clamping mechanism are located above lead screw, and lower clamp system is located at below lead screw, and lower clamp system includes two support bases,
Two support bases slide vertically respectively to be connected in two fixing seats, and is separately installed with hydraulic cylinder in two fixing seats and is used respectively
The big stock wire of more one metal wire compositions, metal are connected between the vertical motion for driving two support bases, two support bases
Silk is made of memory alloy material；The drive rod for being connected with a transverse direction is also slid vertically on support base, is fixed on drive rod
There are multiple vertical insulated columns, insulated column is respectively positioned between support base and lead screw, and insulated column is multiple in up big and down small round table-like
Insulated column is uniformly distributed along lead screw length direction, and multiple insulated columns both pass through more one metal wires, and the wire of big stock is separated into
The wire radical of the wire of shallow bid, per share wire is all the same；
The method for carrying out controllable adjustment to ball-screw pre-stretching amount using the device is as follows:
A. first lead screw is clamped using clamp system, the concrete mode of clamping is as follows: opens the switch for adjusting cylinder, adjusted
Cylinder drives two fixing seats to slide in two sliding slots respectively, and two fixing seats is made to move to the position that lead screw needs to clamp,
The radical of wire in per share wire is selected according to the width of lead screw screw channel and depth, so that per share wire just can be by silk
The screw channel filling of thick stick is full, and adjusts the vertical height of drive rod, so that spacing and the screw pitch phase of lead screw between each stock wire
Deng, be then turned on the switch of hydraulic cylinder, hydraulic cylinder drives the support base in upper clamping mechanism to move upwards so that each stock wire by
Gradually close to lead screw, final each stock wire is caught in just in each screw channel of lead screw, similarly, each money paid for shares category in lower clamp system
Silk, which moves downward, to be also caught in just in each screw channel of lead screw, and the upper and lower surfaces of lead screw are clamped；
B. lead screw is pre-stretched using drawing mechanism again, to realize office of the lead screw from drawing mechanism at clamp system
Portion's pre-stretching.
2. ball-screw pre-stretching amount controllable adjustment method according to claim 1, it is characterised in that: the wire connects
There is strainer.
3. ball-screw pre-stretching amount controllable adjustment method according to claim 2, it is characterised in that: the strainer
Including the tensioning wheel being rotatably connected on bearing block, the wire is fixed and is wrapped on tensioning wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849603.7A CN108581583B (en) | 2018-07-28 | 2018-07-28 | Ball-screw pre-stretching amount controllable adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810849603.7A CN108581583B (en) | 2018-07-28 | 2018-07-28 | Ball-screw pre-stretching amount controllable adjustment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108581583A CN108581583A (en) | 2018-09-28 |
| CN108581583B true CN108581583B (en) | 2019-08-20 |
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|---|---|---|---|
| CN201810849603.7A Active CN108581583B (en) | 2018-07-28 | 2018-07-28 | Ball-screw pre-stretching amount controllable adjustment device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110653625A (en) * | 2019-05-27 | 2020-01-07 | 上海帮楚自动化科技有限公司 | Lead screw is to drawing slip table module |
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| JPS59133864A (en) * | 1983-01-18 | 1984-08-01 | Hitachi Ltd | Lead screw device for drive of reciprocative table |
| JPH08233060A (en) * | 1995-02-24 | 1996-09-10 | Kyushu Toshiba Kikai Kk | Ball screw device equipped with mechanism of fine displacement between double nuts |
| JP2005066716A (en) * | 2003-08-28 | 2005-03-17 | Toyo Seiki Kogyo Co Ltd | Screw-feeding mechanism, working device provided with the same, and manufacturing method for screw-feeding mechanism |
| CN1785780A (en) * | 2005-07-01 | 2006-06-14 | 上海振华港口机械（集团）股份有限公司 | Steel cable winding system for container crane lifting and trolley compound motion |
| CN202208926U (en) * | 2011-08-26 | 2012-05-02 | 柳州十一冶机械制造有限责任公司 | Tandem traction system for retaining wall pipe of ramming enlarged pile driver |
| CN202388300U (en) * | 2011-12-16 | 2012-08-22 | 江苏新瑞重工科技有限公司 | Ball screw prestretching structure |
| CN202655856U (en) * | 2012-04-25 | 2013-01-09 | 湖南华控科技有限公司 | Constant temperature difference pre-stretching device for screw |
| CN203309006U (en) * | 2013-06-17 | 2013-11-27 | 佛山市海盈食品有限公司 | Wire rope joint |
| JP2014040896A (en) * | 2012-08-23 | 2014-03-06 | Thk Co Ltd | Ball screw device, and automatic transmission using the same |
| CN103861881A (en) * | 2014-02-27 | 2014-06-18 | 烟台金德精密铜管有限公司 | Copper pipe section drawing device |
| CN103899835A (en) * | 2012-12-25 | 2014-07-02 | 西安航天远征流体控制股份有限公司 | Metal bellows for pulse valve |
| CN106312595A (en) * | 2016-11-02 | 2017-01-11 | 四川理工学院 | Lead screw supporting structure and precise pre-stretching method thereof |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59133864A (en) * | 1983-01-18 | 1984-08-01 | Hitachi Ltd | Lead screw device for drive of reciprocative table |
| JPH08233060A (en) * | 1995-02-24 | 1996-09-10 | Kyushu Toshiba Kikai Kk | Ball screw device equipped with mechanism of fine displacement between double nuts |
| JP2005066716A (en) * | 2003-08-28 | 2005-03-17 | Toyo Seiki Kogyo Co Ltd | Screw-feeding mechanism, working device provided with the same, and manufacturing method for screw-feeding mechanism |
| CN1785780A (en) * | 2005-07-01 | 2006-06-14 | 上海振华港口机械（集团）股份有限公司 | Steel cable winding system for container crane lifting and trolley compound motion |
| CN202208926U (en) * | 2011-08-26 | 2012-05-02 | 柳州十一冶机械制造有限责任公司 | Tandem traction system for retaining wall pipe of ramming enlarged pile driver |
| CN202388300U (en) * | 2011-12-16 | 2012-08-22 | 江苏新瑞重工科技有限公司 | Ball screw prestretching structure |
| CN202655856U (en) * | 2012-04-25 | 2013-01-09 | 湖南华控科技有限公司 | Constant temperature difference pre-stretching device for screw |
| JP2014040896A (en) * | 2012-08-23 | 2014-03-06 | Thk Co Ltd | Ball screw device, and automatic transmission using the same |
| CN103899835A (en) * | 2012-12-25 | 2014-07-02 | 西安航天远征流体控制股份有限公司 | Metal bellows for pulse valve |
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| CN103861881A (en) * | 2014-02-27 | 2014-06-18 | 烟台金德精密铜管有限公司 | Copper pipe section drawing device |
| CN106312595A (en) * | 2016-11-02 | 2017-01-11 | 四川理工学院 | Lead screw supporting structure and precise pre-stretching method thereof |
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| Publication number | Publication date |
|---|---|
| CN108581583A (en) | 2018-09-28 |
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Denomination of invention: Controllable adjustment device for pre stretching amount of ball screw Effective date of registration: 20230912 Granted publication date: 20190820 Pledgee: Liangjiang branch of Chongqing Rural Commercial Bank Co.,Ltd. Pledgor: CHONGQING HONGGANG CNC MACHINE Co.,Ltd. Registration number: Y2023500000068 |