CN104759897B - The circular bosses of high-precision vertical table base hydrostatic seal structure - Google Patents

The circular bosses of high-precision vertical table base hydrostatic seal structure Download PDF

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Publication number
CN104759897B
CN104759897B CN201510172829.4A CN201510172829A CN104759897B CN 104759897 B CN104759897 B CN 104759897B CN 201510172829 A CN201510172829 A CN 201510172829A CN 104759897 B CN104759897 B CN 104759897B
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China
Prior art keywords
driven pulley
static
base
fan
pressure
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CN104759897A (en
Inventor
俞朝杰
裴崇文
王新文
吕亚光
于涛
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Zhejiang tuoman Intelligent Technology Co.,Ltd.
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WUHU TOMAN PRECISION MACHINERY TECHNOLOGY Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25Movable or adjustable work or tool supports
    • B23Q1/26Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/38Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Machine Tool Units (AREA)

Abstract

The invention discloses the circular bosses of high-precision vertical table base hydrostatic seal structure, the end face of base is provided with raising up of annular, and raising up of annular is radially the most coaxial more than the external diameter of fan-shaped hydrostatic support block;The lower surface of driven pulley is provided with the groove that matches with this convex shape;Protruding and groove constitutes sealing structure;Arranging shallow circular recess on the outer round surface of circular bosses, shallow circular recess constitutes circumference static-pressure oil chamber with the bore area of driven pulley;Base is provided with oil duct, is connected with workbench hydraulic system by circumference static-pressure oil chamber.Using technique scheme, workbench defines the closed type static pressure supporting of high rigidity, high anti-heeling moment under upper and lower and radially hydrostatic support power effect;Owing to driven pulley is to move under the supporting axially, being radially in high pressure oil film, it is provided with that rotating accuracy rigidity high, high, high vibration resistance, anti-heeling moment be strong, simple in construction and the little advantage of staring torque.

Description

The circular bosses of high-precision vertical table base hydrostatic seal structure
The application is the divisional application of following application for a patent for invention:
Original bill application number: 201310308718.2
The original bill applying date: on July 22nd, 2013
Technical field
The invention belongs to the technical field of mechanical production devices, relate to the workbench structure of big machinery machining tool Make.It is more particularly related to the circular bosses of high-precision vertical table base hydrostatic seal structure.
Background technology
High-precision vertical workbench of the prior art, mostly uses plane thrust bearing and radial roller bearing Supporting, its rotating accuracy is restricted by rolling bearing, is difficult to there is breakthrough raising, its precision order of magnitude Mostly at a few percent grade, and its absorbing poor performance, the most do not adapt to modern high-precision part Processing, the particularly large-scale high-precision parts to the industry such as Aeronautics and Astronautics, wind-powered electricity generation, more cannot meet it Required precision.
Summary of the invention
The present invention provides the circular bosses of high-precision vertical table base hydrostatic seal structure, its objective is to improve The support accuracy of workbench.
To achieve these goals, the technical scheme that the present invention takes is:
The high-precision vertical workbench that the present invention provides, the workbench including base, being arranged on base, phase The driving wheel of mutual external toothing and driven pulley, described driven pulley is located at the lower section of described workbench, and described driven Wheel is fixedly and coaxially connected with described workbench;
Described base is provided with the circular bosses raised up, described driven pulley by circular hole be set with described in boss On platform, and form matched in clearance;It is provided with circumference quiet between the surface that described circular bosses coordinates with described driven pulley Pumping cavity.
Arranging shallow circular recess on the outer round surface of described circular bosses, described shallow circular recess is interior with driven pulley Hole surface constitutes described circumference static-pressure oil chamber;Described base is provided with oil duct, by described circumference static-pressure oil chamber with Workbench hydraulic system connects.
Dome external diameter and driven pulley endoporus leave certain interval, take gap width by design.
On the shoulder horizontal plane of the base at described circular bosses place, if fan-shaped static pressure props up bracer;Described driven pulley Lower surface prop up bracer with described fan-shaped static pressure and contact;Bracer is propped up with fan-shaped static pressure in the lower surface of described driven pulley Between one side upward, it is provided with static thrust pumping cavity.
Described fan-shaped static pressure props up bracer one side upward and is provided with fan-shaped shallow grooves, described fan-shaped shallow grooves With the static thrust pumping cavity described in the lower surface composition of described driven pulley;Described base and described fan-shaped static pressure Prop up bracer and be provided with oil duct, described circumference static-pressure oil chamber is connected with workbench hydraulic system.
The lower surface of described driven pulley supports block gap with the fan-shaped static pressure on the shoulder face on described base and coordinates, Gap width is taken by design.
The upper surface of described circular bosses is provided with pressure rings, and described pressure rings is fastenedly connected with circular bosses;Described The external diameter of pressure rings is more than described circular bosses;
The upper and lower end face of described driven pulley, props up bracer court with the lower surface of described pressure rings and fan-shaped static pressure On one side, formed matched in clearance;
It is provided with down between described pressure rings and described driven pulley matching surface and presses static-pressure oil chamber.
Driven pulley upper surface forms matched in clearance with the pressure rings lower surface being screwed in base upper surface, Gap width is taken by design,
Described pressure rings one side down, is provided with the shallow grooves of arc-shaped;The shallow grooves of described arc-shaped With the pressure static-pressure oil chamber down described in the upper surface composition of driven pulley;Described base and described pressure rings are provided with oil Road, connects the described static-pressure oil chamber of pressure down with workbench hydraulic system.
The end face of described base is provided with raising up of annular, the footpath that raises up of described annular To the most coaxial more than the external diameter of fan-shaped hydrostatic support block;The lower surface of described driven pulley is provided with and this projection Matching form closes groove;Described projection and groove constitute sealing structure.
The lower surface of described workbench uses seam fit structure with the upper surface of described driven pulley;Described Seam be annular, this seam is coaxial with workbench and diameter is more than the external diameter of described pressure rings.
Described workbench hydraulic system provides the pressure oil of constant flow.
The present invention uses technique scheme, and workbench is shape under upper and lower and radially hydrostatic support power effect Become the closed type static pressure supporting of high rigidity, high anti-heeling moment;Owing to driven pulley is all to locate in axial, radial direction Move under the supporting of high pressure oil film, be provided with rotating accuracy rigidity high, high, high vibration resistance, anti-tilting force Square is strong, simple in construction and the little advantage of staring torque;Fan-shaped hydrostatic support block uses sector structure, at one Multiple secter pat can be installed on anchor ring, form many oil pockets and support, drastically increase the anti-top of hydrostatic support Cover the ability of moment, reduce difficulty of processing simultaneously;Static-pressure oil chamber is opened on annulus by pressure rings, facilitates The installation of closed hydrostatic slideway adjusts with gap;The present invention is especially suitable for high-precision vertical lathe, vertical grinder And the vertical working main shaft of gear hobbing gear grinding machines and rotary table, its precision order of magnitude some thousandths of millimeter it In, the needs of the industry development such as Aeronautics and Astronautics, wind-powered electricity generation can be met.
Accompanying drawing explanation
The present invention includes the following drawings:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the fan-shaped hydrostatic support block structure schematic diagram in the present invention;
Fig. 3 is the pressure rings structural representation in the present invention;
Fig. 4 is the oil circuit schematic diagram of the circumference static-pressure oil chamber in the present invention and static thrust pumping cavity;
Fig. 5 is the oil circuit schematic diagram pressing down static-pressure oil chamber in the present invention;.
Figure is labeled as:
1, workbench, 2, high-strength screw, 3, driven pulley, 4, driving wheel, 5, base, 6, circumference Static-pressure oil chamber, 7, fan-shaped hydrostatic support block, 8, static thrust pumping cavity, 9, pressure rings, 10, press static pressure down Oil pocket, 11, circular bosses.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, the detailed description of the invention of the present invention is made further Detailed description, to help those skilled in the art to have completeer to inventive concept, the technical scheme of the present invention Whole, accurate and deep understanding.
The structure of the present invention as expressed by Fig. 1, for a kind of high precision constant current enclosed pitot-static pressure standing table, Particularly this workbench bottom surface hydrostatic seal structure.Described standing table includes base 5, is arranged on base Workbench 1, the driving wheel 4 of mutual external toothing and driven pulley 3 on 5, described driven pulley 3 is located at described work The lower section of station 1, and described driven pulley 3 is fixedly and coaxially connected with described workbench 1.
Workbench 1 uses high-strength screw 2 to be fastenedly connected with driven pulley 3, by mutually nibbling at its lower surface The driving wheel 4 closed drives it to rotate, and completes the main motion of workbench 1, on the table clamping workpiece, real The now machining to workpiece.
In order to solve the problem of prior art existence and overcome its defect, it is achieved improve the support accuracy of workbench Goal of the invention, the technical scheme that the present invention takes is:
As shown in Figure 1:
The high-precision vertical workbench of the present invention, its base 5 is provided with the circular bosses 11 raised up, described Driven pulley 3 by circular hole be set with described in circular bosses 11 on, and form matched in clearance;Described circular bosses 11 It is provided with circumference static-pressure oil chamber 6 between the surface coordinated with described driven pulley 3.
As shown in Figure 4, the outer round surface of described circular bosses 11 arranges shallow circular recess, described annular scrobicula Groove constitutes described circumference static-pressure oil chamber 6 with the bore area of driven pulley 3;Described base 5 is provided with oil duct, will Described circumference static-pressure oil chamber 6 connects with workbench hydraulic system.
Driven pulley 3 is sleeved on the circular bosses 11 of base 5, and the external peripheral surface of circular bosses 11 has circle All static-pressure oil chambers 6, the external diameter of dome platform 11 leaves certain interval with the endoporus of driven pulley 3, and takes by design Gap width.
When the pressure oil of the constant flow of workbench hydraulic system offer passes through the fuel feed hole of base 5 bottom surface, enter It is the formation of a floor height force feed film during circumference static-pressure oil chamber 6, by the effect of pressure oil, makes driven pulley 3 exist Radially suspend, define the radial direction hydrostatic support of high intensity.
As shown in Figure 2:
On the shoulder horizontal plane of the base 5 at described circular bosses 11 place, if fan-shaped static pressure props up bracer 7;Described The lower surface of driven pulley 3 is propped up bracer 7 with described fan-shaped static pressure and is contacted;The lower surface of described driven pulley 3 and fan Shape static pressure props up between bracer 7 one side upward, is provided with static thrust pumping cavity 8.
As shown in Figure 4, described fan-shaped static pressure props up bracer 7 one side upward and is provided with fan-shaped shallow grooves, institute The fan-shaped shallow grooves stated and the static thrust pumping cavity 8 described in the lower surface composition of described driven pulley 3;The described end Seat 5 and described fan-shaped static pressure prop up bracer 7 and are provided with oil duct, by described circumference static-pressure oil chamber 6 and workbench liquid Pressure system connectivity.
Bracer 7 gap is propped up with the fan-shaped static pressure on the shoulder face on described base 5 in the lower surface of described driven pulley 3 Coordinate, take gap width by design.
When the pressure oil of the constant flow of workbench hydraulic system offer enters fan-shaped quiet by the fuel feed hole of base 5 When pressure props up the static thrust pumping cavity 8 on bracer 7, under the effect of pressure oil, driven pulley 3 upwards suspends, Form high intensity axial thrust hydrostatic support.
Fan-shaped static pressure props up bracer 7 and uses sector structure, can install multiple secter pat on an anchor ring, Form many oil pockets to support, drastically increase the ability of the anti-disturbing moment of hydrostatic support, simplify simultaneously and facilitate Its processing technology, reduces difficulty of processing.
As shown in Figure 3:
The upper surface of described circular bosses 11 is provided with pressure rings 9, and described pressure rings 9 is with circular bosses 11 fastening even Connect;The external diameter of described pressure rings 9 is more than described circular bosses 11;
The upper and lower end face of described driven pulley 3, supports with the lower surface of described pressure rings 9 and fan-shaped static pressure Block 7 one side upward, forms matched in clearance;
Pressure static-pressure oil chamber 10 it is provided with down between described pressure rings 9 and described driven pulley 3 matching surface.
As it is shown in figure 5, the one side that described pressure rings 9 is down, it is provided with the shallow grooves of arc-shaped;Described The shallow grooves of arc-shaped and the pressure static-pressure oil chamber 10 down described in the upper surface composition of driven pulley 3;Described base 5 It is provided with oil duct with described pressure rings 9, the described static-pressure oil chamber 10 of pressure down is connected with workbench hydraulic system.
The lower surface shape of the upper surface of driven pulley 3 and the pressure rings 9 being screwed on base 5 upper surface Become matched in clearance, and take gap width by design.
By pressing down static-pressure oil chamber 10 to be arranged in the pressure rings 9 of annular, facilitate the peace of closed hydrostatic slideway Dress adjusts with gap.
When the pressure oil of the constant flow of workbench hydraulic system offer passes through fuel feed hole, enter in pressure rings 9 During lower pressure static-pressure oil chamber 10, due to the effect of pressure oil, driven pulley 3 receives down the static pressure support force pressed, Form the hydrostatic support that high intensity axle is pressed downward against.
In sum, the work spindle of the vertical machine that the above-mentioned constant current enclosed pitot-static pressure that the present invention provides supports With workbench, it is particularly well-suited to high rotating accuracy, high vibration resistance, anti-heeling moment is strong, staring torque is little, And simple in construction high-precision vertical lathe, vertical grinder and gear hobbing, the working-spindle of grinding machine bed and revolution Workbench.Its precision order of magnitude, within some thousandths of millimeter, can meet the industry such as Aeronautics and Astronautics, wind-powered electricity generation The needs of development.
The inner hole sleeve of driven pulley 3, on the oil pocket dome of base 5, forms the matched in clearance of radially hydrostatic bearing; The lower surface of driven pulley 3 forms the gap of axial thrust hydrostatic support with base 5 dome circular bead surface oil pocket fan block Coordinate;The upper surface of driven pulley 3 is formed with the oil pocket pressure rings being fixed in base 5 dome upper surface and axially pushes away The matched in clearance of power hydrostatic support.
Now, the upper and lower end face of driven pulley 3 and endoporus are in hydrostatic support, and it is in upper and lower and radial direction High rigidity is defined, the enclosed pitot-static pressure supporting of high anti-heeling moment under the effect of hydrostatic support power.Due to from Driving wheel 3 is to operate under axial-radial is in the bearing state of high pressure oil film, is provided with high rigidity height antivibration Property and the high advantage of the little rotating accuracy of staring torque, be particularly well-suited to high accuracy, to resistance to shock and anti-inclination Grinding machine that torque requirement is high, lathe, gear-hobbing machine use.
As shown in Figure 1, Figure 4 and Figure 5:
The end face of described base 5 is provided with raising up of annular, raising up of described annular Radially the most coaxial more than the external diameter of fan-shaped hydrostatic support block 7;The lower surface of described driven pulley 3 be provided with This convex shape matches groove;Described projection and groove constitute sealing structure.
Said structure, it is ensured that from fan-shaped hydrostatic support block 7 and the pressure oil of circumference static-pressure oil chamber 6 leakage, no Job site can be leaked into from workbench.
As shown in Figure 1, Figure 4 and Figure 5:
The lower surface of described workbench 1 uses seam fit structure with the upper surface of described driven pulley 3; Described seam is annular, and this seam is coaxial with workbench and diameter is more than the external diameter of described pressure rings 9.
Said structure, it is ensured that press static-pressure oil chamber 10 and the pressure oil of circumference static-pressure oil chamber 6 leakage from down, will not Job site is leaked into from workbench.
Owing to the present invention is only constituted a set of rotary table by five big parts, take full advantage of static pressure technology Advanced feature, enormously simplify structure and assembly technology.Its concrete matching requirements are as follows:
1, on the shoulder face of base 5, load onto fan-shaped static pressure prop up bracer 7, and with after screw fastening, repair and scrape sector Static pressure props up the upper surface of bracer 7, it is ensured that its flatness error is less than 0.01mm;
2, driven pulley 3 is enclosed within the circular bosses 11 of base 5, and makes its lower surface prop up bracer 7 with fan-shaped static pressure Upper surface is fitted, and measures the distance of upper surface and base 5 end face of driven pulley 3 so that it is quiet equal to twice Force feed gap;If undesirable, can be with the end face of scraping base 5, until qualified;
3, workbench 1 is installed in the seam of driven pulley 3, and fasten with driven pulley 3 with high-strength screw 2 Connect, i.e. complete the assembling of static pressure rotary worktable;
4, a whole set of rotary table assembled is put on the lathe bed of lathe so that it is engage with driving wheel 4, And fasten with bolt, load onto static pressure oil circuit, can come into operation.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements not by upper State the restriction of mode, if the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme Improvement, or the most improved design by the present invention and technical scheme directly apply to other occasion, all exists Within protection scope of the present invention.

Claims (2)

1. the circular bosses of high-precision vertical table base hydrostatic seal structure, described standing table includes base (5), peace It is contained in the workbench (1) on base (5), the driving wheel (4) of mutual external toothing and driven pulley (3), described driven pulley (3) It is located at the lower section of described workbench (1), and described driven pulley (3) is fixedly and coaxially connected with described workbench (1);
It is characterized in that:
Described circular bosses is located on described base (5), and described circular bosses (11) raises up, described driven pulley (3) By circular hole be set with described in circular bosses (11) on, and form matched in clearance;
It is provided with circumference static-pressure oil chamber (6) between the surface that described circular bosses (11) coordinates with described driven pulley (3);
On the shoulder horizontal plane of the base (5) at described circular bosses (11) place, if fan-shaped static pressure props up bracer (7);
The lower surface of described driven pulley (3) is propped up bracer (7) with described fan-shaped static pressure and is contacted;
Lower surface and the fan-shaped static pressure of described driven pulley (3) prop up between bracer (7) one side upward, are provided with static thrust pumping cavity (8);
Described fan-shaped static pressure props up bracer (7) one side upward and is provided with fan-shaped shallow grooves, and described fan-shaped shallow grooves is with described The static thrust pumping cavity (8) described in the composition of lower surface of driven pulley (3);
Described base (5) and described fan-shaped static pressure prop up bracer (7) and are provided with oil duct, by described circumference static-pressure oil chamber (6) and work Station hydraulic system connects;
The end face of described base (5) is provided with raising up of annular, raising up radially more than fan of described annular The external diameter that shape static pressure props up bracer (7) is the most coaxial;
The lower surface of described driven pulley (3) is provided with the groove that matches with this convex shape;Described projection constitutes close with groove Seal structure;
The endoporus of shallow circular recess, described shallow circular recess and driven pulley (3) is set on the outer round surface of described circular bosses (11) Surface constitutes described circumference static-pressure oil chamber (6);
Described base (5) is provided with oil duct, described circumference static-pressure oil chamber (6) is connected with workbench hydraulic system.
2. according to the circular bosses of the high-precision vertical table base hydrostatic seal structure described in claim 1, it is characterised in that: Described workbench hydraulic system provides the pressure oil of constant flow.
CN201510172829.4A 2013-07-22 2013-07-22 The circular bosses of high-precision vertical table base hydrostatic seal structure Active CN104759897B (en)

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CN201510172829.4A CN104759897B (en) 2013-07-22 2013-07-22 The circular bosses of high-precision vertical table base hydrostatic seal structure
CN201310308718.2A CN103406768B (en) 2013-07-22 2013-07-22 Static-pressure sealing structure of base of vertical high-precision working table

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CN104759897B true CN104759897B (en) 2016-08-24

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CN201510172827.5A Active CN104786070B (en) 2013-07-22 2013-07-22 Pressure ring of high-precision vertical working table base static-pressure seal structure
CN201310308718.2A Active CN103406768B (en) 2013-07-22 2013-07-22 Static-pressure sealing structure of base of vertical high-precision working table
CN201510191332.7A Pending CN104741938A (en) 2013-07-22 2013-07-22 High-accuracy vertical work table base static seal structure pressing static oil cavity
CN201510172829.4A Active CN104759897B (en) 2013-07-22 2013-07-22 The circular bosses of high-precision vertical table base hydrostatic seal structure

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CN201510172827.5A Active CN104786070B (en) 2013-07-22 2013-07-22 Pressure ring of high-precision vertical working table base static-pressure seal structure
CN201310308718.2A Active CN103406768B (en) 2013-07-22 2013-07-22 Static-pressure sealing structure of base of vertical high-precision working table
CN201510191332.7A Pending CN104741938A (en) 2013-07-22 2013-07-22 High-accuracy vertical work table base static seal structure pressing static oil cavity

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CN105690111A (en) * 2016-04-08 2016-06-22 宜昌长机科技有限责任公司 Self-adaptive static-pressure adjustment supporting device for large rotary workbench and oil film thickness control system and method
CN106475797B (en) * 2016-12-07 2018-11-20 北京工业大学 A kind of high revolving speed heavy type static pressure turntable of high-precision
CN108213993A (en) * 2018-03-30 2018-06-29 科德数控股份有限公司 A kind of horizontal Five-axis NC Machining Center milling vehicle working bench
CN111136348A (en) * 2020-01-20 2020-05-12 嘉兴荣硕机械有限公司 Gear milling machine

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CN103406768B (en) 2015-06-10
CN104741938A (en) 2015-07-01
CN104786070B (en) 2017-01-25
CN104759897A (en) 2015-07-08
CN103406768A (en) 2013-11-27
CN104786070A (en) 2015-07-22

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Effective date of registration: 20190128

Address after: 312580 No. 29 Xinshi Road, Xinchang Industrial Park, Xinchang County, Shaoxing City, Zhejiang Province

Patentee after: Zhejiang Toman Precision Machinery Co., Ltd.

Address before: No. 566 Yanghuang Road, Xinwu Economic Development Zone, Wuhu County, Anhui Province

Patentee before: Wuhu TOMAN Precision Machinery Technology Co., Ltd.

CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: No.29, Xinshi Road, Xinchang Industrial Park, Shaoxing City, Zhejiang Province 312500

Patentee after: Zhejiang tuoman Intelligent Technology Co.,Ltd.

Address before: 312580 No. 29 Xinshi Road, Xinchang Industrial Park, Xinchang County, Shaoxing City, Zhejiang Province

Patentee before: ZHEJIANG TOMAN PRECISION MACHINERY Co.,Ltd.