CN106914636A - Main shaft device and lathe - Google Patents

Main shaft device and lathe Download PDF

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Publication number
CN106914636A
CN106914636A CN201611045120.9A CN201611045120A CN106914636A CN 106914636 A CN106914636 A CN 106914636A CN 201611045120 A CN201611045120 A CN 201611045120A CN 106914636 A CN106914636 A CN 106914636A
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CN
China
Prior art keywords
main shaft
diameter
spring
draw bar
lathe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611045120.9A
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Chinese (zh)
Other versions
CN106914636B (en
Inventor
栗林裕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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Filing date
Publication date
Priority to JP2015254721A priority Critical patent/JP6769030B2/en
Priority to JP2015-254721 priority
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of CN106914636A publication Critical patent/CN106914636A/en
Application granted granted Critical
Publication of CN106914636B publication Critical patent/CN106914636B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/117Retention by friction only, e.g. using springs, resilient sleeves, tapers
    • B23B31/1173Retention by friction only, e.g. using springs, resilient sleeves, tapers using springs
    • 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
    • B23Q1/70Stationary or movable members for carrying working-spindles for attachment of tools or work

Abstract

The present invention provides the main shaft device and the lathe with the main shaft device that can keep cutter.Main shaft device has:Draw bar, it can be axially moveable on the inside of main shaft;And spring, it is located at around draw bar, and draw bar is exerted a force to the other end side of main shaft.Spring has minor diameter part or draw bar has large-diameter portion, the internal diameter of the internal diameter less than the other parts of spring of the minor diameter part, the diameter of the other parts with diameter greater than draw bar of the large-diameter portion.Therefore, it is possible to suppress to produce gap between spring and draw bar in spring contraction.

Description

Main shaft device and lathe
Technical field
Main shaft device and lathe with the main shaft device the present invention relates to cutter can be kept.
Background technology
Japanese Patent Publication the 2008-137110th discloses a kind of lathe with main shaft device.Main shaft device With main shaft, clamping device, draw bar and spring.Clamping device is located at the one end of main shaft, for holding cutter.Draw bar with Clamping device is connected.Spring exerts a force to draw bar around draw bar to the other end side of main shaft.
When draw bar is located at the other end side of main shaft, clamping device can hold cutter.Overcome spring in draw bar Force when moving to the one end side of main shaft, clamping device can release the holding to cutter.
When draw bar moves to the one end side of main shaft, spring contraction, the axis direction central portion of spring is outside towards footpath Expand side.Thus, gap is produced between draw bar and spring.The other end side of main shaft is moved in draw bar, makes clamping Mechanism is un-extended to free state although spring stretches when hold cutter.Therefore, exist between draw bar and spring Gap.In main shaft when being rotated at a high speed in the state of holding cutter, due to there are gap, therefore spring can vibrate.Spring Vibration can pass to main shaft, and causing the machining accuracy of workpiece reduces.
The content of the invention
It is an object of the present invention to provide the main shaft device and tool of spring vibration being arranged on around draw bar can be suppressed There is the lathe of the main shaft device.
The main shaft device of technical scheme 1 has:Main shaft, it is cylindrical in shape, and can rotate about the axis, can be the one of the main shaft Assemble cutter in end;Draw bar, it can be axially moveable on the inside of the main shaft;And spring, it is located at the draw bar Around, the draw bar is exerted a force to the other end side of the main shaft, wherein, the spring has minor diameter part or the traction Bar has large-diameter portion, and the internal diameter of the internal diameter less than the other parts of the spring of the minor diameter part, the diameter of the large-diameter portion is big In the diameter of the other parts of the draw bar.
There is spring minor diameter part or draw bar to have large-diameter portion, therefore, it is possible to suppress in spring contraction spring with lead Draw and produce gap between bar.
At least a portion of the minor diameter part of the main shaft device of technical scheme 2 or at least a portion of large-diameter portion are located at spring Axis direction centre.Minor diameter part or large-diameter portion are located at the axis direction centre for being easiest to produce gap of spring, accordingly, it is capable to Enough it is reliably suppressed gap generation.
Boundary of the main shaft device of technical scheme 3,4 between minor diameter part and the other parts of spring has stage portion. Compared with the method for the manufacture spring for making internal diameter gradually change for the purpose of avoiding the occurrence of stage portion, manufacture has stage portion The method of spring be relatively easy to.
The other parts of the spring of the main shaft device of technical scheme 5,6 have truncated cone portion, and the truncated cone portion is leaned on External diameter by with the minor diameter part residing for that side opposite side of the external diameter of the minor diameter part side less than the truncated cone portion. When draw bar is inserted into spring, truncated cone portion can guide draw bar, therefore, easily carry out assembling operation.
The spring of the main shaft device of technical scheme 7 includes helical spring.Compared with using the situation of disc spring etc., spiral shell is being used In the case of rotation spring, manufacturing expense can be cut down.
The lathe of technical scheme 8 has the main shaft device described in any of the above-described technical scheme.The lathe is obtained in that and skill The same effect of art scheme 1~7.
Brief description of the drawings
Fig. 1 is the stereogram of the lathe for representing implementation method 1.
Fig. 2 is the sectional view for representing main shaft device.
Fig. 3 is the sectional view for representing draw bar and helical spring.
Fig. 4 be represent the lathe of variation 1 obtained after the part change by the structure of helical spring draw bar and The sectional view of helical spring.
Fig. 5 be represent the lathe of variation 2 obtained after the part change by the structure of helical spring draw bar and The sectional view of helical spring.
Fig. 6 is the draw bar of the lathe for representing implementation method 2 and the sectional view of helical spring.
Specific embodiment
Implementation method 1
Below, the lathe based on brief description of the drawings implementation method 1.It is indicated by arrows in Fig. using attached in the following description Top to bottom, left and right, front and rear.As shown in figure 1, lathe 100 has the pedestal 1 of the rectangle for extending along the longitudinal direction.For keeping workpiece Work holding portion thereof 3 located at pedestal 1 the forward side in top position.Work holding portion thereof 3 can rotate around A axles and C axles, A axles with Left and right directions is for axially, C axles are with above-below direction as axially.
For supporting the position of the supporting station 2 of column described later 4 located at the top of pedestal 1 side rearward.Y direction moving machine Structure 10 can be such that movable plate 16 moves along the longitudinal direction located at the top of supporting station 2.Y direction travel mechanism 10 has Y-axis spiral shell The guide rail 11 that bar 12, Y-axis motor 13, bearing 14 and two extend along the longitudinal direction.
Position and position on the right side of the guide rail 11 located at the side that keeps left on the top of supporting station 2.Y-axis screw rod 12 is along front and back To extension, between two guide rails 11.Bearing 14 is located at the leading section of Y-axis screw rod 12 and center section part (omitting diagram).Y-axis horse It is connected with the rearward end of Y-axis screw rod 12 up to 13.
Nut (omitting diagram) is threadedly engaged across rolling element (omitting diagram) with Y-axis screw rod 12.Rolling element is, for example, rolling Pearl.Multiple sliding parts 15 are located at each guide rail 11 in the way of it can slide.Movable plate 16 is horizontally extending, with nut and cunning The top of moving part 15 is connected.When Y-axis motor 13 rotates, Y-axis screw rod 12 is driven to rotate, so that, nut is moved along the longitudinal direction Dynamic, movable plate 16 is moved along the longitudinal direction.
X-direction travel mechanism 20 is located at the upper surface of movable plate 16.X-direction travel mechanism 20 can make the edge of column 4 Left and right directions is moved.X-direction travel mechanism 20 has X-axis screw rod 22, X-axis motor (omitting diagram), bearing 23 and two edges The guide rail 21 that left and right directions extends.
Position and the rearward position of side of the guide rail 21 located at the forward side of the upper surface of movable plate 16.X-axis screw rod 22 is along a left side Right direction extends, between two guide rails 21.Bearing 23 is located at the left part of X-axis screw rod 22 and center section part (omitting diagram).X Axle motor is connected with the right part of X-axis screw rod 22.
Nut (omitting diagram) is threadedly engaged across rolling element (omitting diagram) with X-axis screw rod 22.Multiple sliding parts 26 with The mode that can be slided is located at each guide rail 21.Column 4 is connected with the top of nut and sliding part 26.When X-axis motor rotates, X-axis screw rod 22 is driven to rotate, so that, nut is moved in left-right direction, and column 4 is moved in left-right direction.
Z-direction travel mechanism 30 is located at the preceding surface of column 4.Z-direction travel mechanism 30 can make main tapping 5 along upper Lower direction movement.Z-direction travel mechanism 30 prolongs along the vertical direction with Z axis screw rod 32, Z axis motor 33, bearing 34 and two The guide rail 31 stretched.
Position and position on the right side of the guide rail 31 located at the side that keeps left on the preceding surface of column 4.Z axis screw rod 32 is vertically square To extension, between two guide rails 31.Bearing 34 is located at the bottom of Z axis screw rod 32 and center section part (omitting diagram).Z axis horse It is connected with the upper end of Z axis screw rod 32 up to 33.
Nut (omitting diagram) is threadedly engaged across rolling element (omitting diagram) with Z axis screw rod 32.Multiple sliding parts 35 with The mode that can be slided is located at each guide rail 31.Main tapping 5 is connected with the front portion of nut and sliding part 35.Revolved in Z axis motor 33 When turning, Z axis screw rod 32 is driven to rotate, so that, nut is moved along the vertical direction, and main tapping 5 is moved along the vertical direction.
Main shaft device 50 is located at main tapping 5.Main shaft device 50 has vertically extending main shaft 51.Main shaft 51 can Rotate about the axis.Spindle motor 6 is located at the upper end of main tapping 5.Cutter can be assembled in the bottom of main shaft 51.In main shaft horse When 6 rotation, main shaft 51 is driven to rotate, so that, cutter rotation.The cutter of rotation can be to being maintained at the work of work holding portion thereof 3 Part is processed.
Lathe 100 has for changing the tool changing device of cutter (omitting diagram).Tool changing device can make to be accommodated in tool magazine Cutter in (omitting diagram) is exchanged with the cutter being currently assemblied on main shaft 51.
As shown in Fig. 2 main shaft device 50 has draw bar 53, the main shaft 51 of helical spring 54, tubular and for keeping knife The clamping device 52 of tool.Partition wall 51c is located at the inner side of main shaft 51.First Room 51a is located at the upside of partition wall 51c, second Room 51b is located at the downside of partition wall 51c.
Draw bar 53 is axially inserted into along main shaft 51.Draw bar 53 can be along the axial movement.Draw bar 53 has company Knot axle portion 53b, flange part 53c, threaded shank 53d and bar-shaped main part 53a.Link the one end of axle portion 53b main bodies 53a Axially protrude, be connected with clamping device 52.The diameter and link axle portion 53b with diameter greater than main part 53a of flange part 53c Diameter.Flange part 53c is located at the linking portion linked between axle portion 53b and main part 53a.Threaded shank 53d is located at main part The other end of 53a.Main part 53a and flange part 53c is located at the first Room 51a.Link axle portion 53b and run through partition wall 51c, be located at First Room 51a and second Room 51b.Clamping device 52 is located at the end of second Room 51b.Spring base 59 is around flange part 53c. Spring base 59 is located in the first Room 51a.Spring base 59 has cylinder portion 59a and annulus 59b, and cylinder portion 59a and annulus 59b are formed It is integrated.Annulus 59b is in the mode coaxial with cylinder portion 59a located at the end of this tin portion 59a.The opening of annulus 59b it is straight Diameter of the footpath less than flange part 53c.Main part 53a inserts the opening of annulus 59b from cylinder portion 59a sides.Member for prolonging 57 is located at The upper end of the first Room 51a.Screw rod 53d is threadedly engaged with member for prolonging 57.In the first Room 51a, helical spring 54 is located at master Around body portion 53a.Helical spring 54 is located between member for prolonging 57 and spring base 59, upper end and the extension structure of helical spring 54 Part 57 is in contact, and the bottom of helical spring 54 is in contact with spring base 59.Helical spring 54 is to member for prolonging 57 and draw bar 53 exert a force upward.
Multiple bearings 55 are embedded in the outside of the bottom of main shaft 51, and multiple bearings 55 are in the way of main shaft 51 can be pivoted Support the main shaft 51.Non- assembling cylinder 56 is embedded in the outside on the top of main shaft 51, can be slided relative to main shaft 51.Flange 56a Located at the non-assembling bottom of cylinder 56.Non- assembling is located at the position of member for prolonging 57 with cylinder 56.Two vertically The slotted hole (omitting diagram) of extension is located at the top of main shaft 51.Two slotted holes are in the diametrically opposite of main shaft 51.Along main shaft The pin-and-hole 57a of 51 radial direction insertion is located at member for prolonging 57.Pin-and-hole 57a is located at the position corresponding with slotted hole.Pin 58 is inserted Slotted hole and pin-and-hole 57a, the both ends of pin 58 are connected with non-assembling cylinder 56.Main shaft device 50 has can be pressed downwards The non-assembling arm (omitting diagram) of cylinder 56.When arm presses downwards flange 56a, draw bar 53 overcomes helical spring 54 Force move downwards.
Clamping device 52 is located at the bottom of main shaft 51.To change it is current be assemblied in the cutter on clamping device 52 when, Main tapping 5 rises to tool change position, and the arm presses downwards flange 56a, and draw bar 53 declines, and helical spring 54 shrinks, Clamping device 52 releases the holding to cutter.Tool changing device makes the cutter for relieving holding be exchanged with new cutter, and it is right that arm is released Flange 56a's pushes, and draw bar 53 is moved upward in the presence of the screen resilience of helical spring 54, so that clamping device 52 Keep new cutter.When clamping device 52 keeps cutter, helical spring 54 is un-extended to free state, the state for remaining retracted (having stretched the state of some compared with when the holding to cutter is released).
As shown in figure 3, helical spring 54 has upper end 54a, bottom 54b and minor diameter part 54c.Minor diameter part 54c is located at Between upper end 54a and bottom 54b, at least a portion of minor diameter part 54c is located at the axis direction centre of helical spring 54. The internal diameter of upper end 54a and the internal diameter constant of bottom 54b.The internal diameter of minor diameter part 54c less than upper end 54a internal diameter and The internal diameter of bottom 54b, and minor diameter part 54c internal diameter constant.Stage portion 54s located at upper end 54a and minor diameter part 54c it Between boundary and the boundary between bottom 54b and minor diameter part 54c.As long as the internal diameter of upper end 54a, bottom 54b is big In the internal diameter of minor diameter part 54c, the internal diameter of upper end 54a and bottom 54b can also be different.For example upper end 54a's is interior The internal diameter that footpath both can be more than bottom 54b might be less that the internal diameter of bottom 54b.
When clamping device 52 keeps cutter, helical spring 54 is un-extended to free state, the state for remaining retracted.Spiral Spring 54 has minor diameter part 54c, therefore, main shaft device 50 and lathe 100 can suppress when helical spring 54 shrinks in spiral The situation in gap is produced to occur between spring 54 and draw bar 53 such that it is able to suppress the helical spring 54 when main shaft 51 rotates and shake It is dynamic.
The upper end 54a of helical spring 54 is in contact with member for prolonging 57, the bottom 54b and spring base of helical spring 54 59 are in contact, therefore, when main shaft 51 rotates, the upper end 54a of helical spring 54, bottom 54b are difficult to radially expand.Cause This, compared with the upper end 54a, bottom 54b with helical spring 54, the axis direction central portion of helical spring 54 is easier to along footpath To expansion, so as to be easiest to produce gap between the axis direction central portion and draw bar 53 of helical spring 54.Minor diameter part 54c Positioned at the axis direction centre of helical spring 54, produced therefore, it is possible to be reliably suppressed gap.
Main shaft device 50 and lathe 100 have used helical spring 54, therefore, compared with using the situation of disc spring etc., can Cut down manufacturing expense.Helical spring 54 is manufactured into stepped, therefore, in manufacture internal diameter different minor diameter part 54c, upper end During 54a and bottom 54b, compared with the method for making internal diameter gradually change for the purpose of avoiding the occurrence of stage portion, more hold Easily.
Can also be, the internal diameter of the internal diameter more than minor diameter part 54c of one of upper end 54a or bottom 54b, another one Internal diameter it is identical with the internal diameter of minor diameter part 54c.
Variation 1 to being obtained after the part change by the structure of helical spring 54 is illustrated.As shown in figure 4, spiral shell The upper end 54d of spring 54 is revolved in the truncated cone of the internal diameter more than the internal diameter of downside of upside.The bottom 54e of helical spring 54 In the truncated cone of the internal diameter more than the internal diameter of upside of downside.Upper end 54d and bottom 54e are configured to truncated cone portion.By In upper end 54d and bottom 54e in frustum-like shape, therefore, when draw bar 53 is inserted to helical spring 54, upper end 54d Draw bar 53 can be guided with bottom 54e.Can also be that one of upper end 54d or bottom 54e are in frustum-like shape, separately The constant inner diameter of one.
Variation 2 to being obtained after the part change by the structure of helical spring 54 is illustrated.As shown in figure 5, two Individual radially projecting protuberance 54f is located at the stage casing part of minor diameter part 54c.The internal diameter of protuberance 54f is more than minor diameter part 54c's Internal diameter.At least a portion of minor diameter part 54c is located at the axis direction centre of helical spring 54.More than three can also be set Protuberance 54f.
Implementation method 2
Lathe 100 based on brief description of the drawings implementation method 2.As shown in fig. 6, the internal diameter of helical spring 54 is from upper end to lower end Constant.It is by by the diameter of the middle body of the draw bar 53 that draw bar 53 has large-diameter portion 53e, large-diameter portion 53e The diameter more than the other parts of the draw bar 53 is made to make.Draw bar 53 inserts helical spring 54, large-diameter portion 53e's At least a portion is located at the axis direction centre of helical spring 54.
Draw bar 53 in the main shaft device 50 and lathe 100 of implementation method 2 has large-diameter portion 53e, therefore, it is possible to suppress The situation in gap is produced to occur between helical spring 54 and draw bar 53 when helical spring 54 shrinks.
Large-diameter portion 53e is located at the position for being easiest to produce the axis direction center in gap corresponding with helical spring 54, Produced therefore, it is possible to be reliably suppressed gap.
Helical spring 54 is one of spring, is not limited to this.Can also be, such as it is vertically square around draw bar 53 To spread configuration multiple disc spring.Column 4 in lathe 100 can in X direction, Y-direction movement is but it is also possible to be column 4 is fixed In supporting station 2, for keep workpiece workbench can in X direction, Y-direction moves.Lathe 100 is vertical machine, main tapping 5 Move along the vertical direction.Lathe can also be horizontal machine tool.The main tapping 5 of horizontal machine tool is moved along the longitudinal direction.
The structure mark identical accompanying drawing mark same with implementation method 1 in the structure of the lathe 100 of implementation method 2 Note, and omit detail explanation.

Claims (8)

1. a kind of main shaft device, the main shaft device (50) has:
Main shaft (51), it is cylindrical in shape, and can rotate about the axis, and can assemble cutter in the one end of the main shaft (51);
Draw bar (53), it can be axially moveable on the inside of the main shaft;And
Spring (54), it is located at around the draw bar, and the draw bar is exerted a force to the other end side of the main shaft,
The main shaft device is characterised by,
There is the spring minor diameter part (54c) or the draw bar to have large-diameter portion (53e), the internal diameter of the minor diameter part (54c) Less than the internal diameter of the other parts of the spring, the other parts with diameter greater than the draw bar of the large-diameter portion (53e) Diameter.
2. main shaft device according to claim 1, it is characterised in that
At least a portion of at least a portion of the minor diameter part or the large-diameter portion is located at the axis direction center of the spring Place.
3. main shaft device according to claim 1, it is characterised in that
Boundary between the minor diameter part and the other parts of the spring has stage portion (54s).
4. main shaft device according to claim 2, it is characterised in that
Boundary between the minor diameter part and the other parts of the spring has stage portion (54s).
5. main shaft device according to claim 1, it is characterised in that
The other parts of the spring have a truncated cone portion (54d, 54e), the truncated cone portion by the minor diameter part External diameter by with the minor diameter part residing for that side opposite side of the external diameter of side less than the truncated cone portion.
6. main shaft device according to claim 2, it is characterised in that
The other parts of the spring have a truncated cone portion (54d, 54e), the truncated cone portion by the minor diameter part External diameter by with the minor diameter part residing for that side opposite side of the external diameter of side less than the truncated cone portion.
7. the main shaft device according to any one of claim 1~6, it is characterised in that
The spring includes helical spring.
8. a kind of lathe, it is characterised in that
The lathe (100) is with the main shaft device any one of claim 1~7.
CN201611045120.9A 2015-12-25 2016-11-24 Main shaft device and lathe Active CN106914636B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015254721A JP6769030B2 (en) 2015-12-25 2015-12-25 Spindle equipment and machine tools
JP2015-254721 2015-12-25

Publications (2)

Publication Number Publication Date
CN106914636A true CN106914636A (en) 2017-07-04
CN106914636B CN106914636B (en) 2019-09-20

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CN201611045120.9A Active CN106914636B (en) 2015-12-25 2016-11-24 Main shaft device and lathe

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CN (1) CN106914636B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395845A (en) * 2020-04-16 2020-07-10 张峻华 Spring fixing device for shock-proof safety bin and mounting method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031867A1 (en) * 2004-02-03 2005-08-18 Andreas Stihl Ag & Co. Kg Anti-vibration element for use with hand tools including motor-driven chainsaw consists of coil spring with tapered ends engaging cylindrical stops with spiral grooves
US20060105603A1 (en) * 2004-11-18 2006-05-18 Atsushi Nishio Floating connector
JP2008137110A (en) * 2006-12-01 2008-06-19 Brother Ind Ltd Main spindle device of machine tool
WO2010003896A1 (en) * 2008-07-09 2010-01-14 Acc Austria Gmbh Refrigerant compressor
CN103233701A (en) * 2013-04-17 2013-08-07 罗绍东 Reduction spiral spring for tubing paraffin removal of pumping well
CN203717288U (en) * 2014-01-24 2014-07-16 上海华林工业气体有限公司 CO compressor air valve for HYCO (Hydrogen CO) device
DE202014102542U1 (en) * 2014-05-30 2014-08-11 Dreisbach & Jungmann Gmbh & Co. Kg Federzugeinrichtung
CN104033519A (en) * 2014-07-02 2014-09-10 安庆谢德尔汽车零部件有限公司 Horn-shaped compression spring

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031867A1 (en) * 2004-02-03 2005-08-18 Andreas Stihl Ag & Co. Kg Anti-vibration element for use with hand tools including motor-driven chainsaw consists of coil spring with tapered ends engaging cylindrical stops with spiral grooves
US20060105603A1 (en) * 2004-11-18 2006-05-18 Atsushi Nishio Floating connector
JP2008137110A (en) * 2006-12-01 2008-06-19 Brother Ind Ltd Main spindle device of machine tool
WO2010003896A1 (en) * 2008-07-09 2010-01-14 Acc Austria Gmbh Refrigerant compressor
CN103233701A (en) * 2013-04-17 2013-08-07 罗绍东 Reduction spiral spring for tubing paraffin removal of pumping well
CN203717288U (en) * 2014-01-24 2014-07-16 上海华林工业气体有限公司 CO compressor air valve for HYCO (Hydrogen CO) device
DE202014102542U1 (en) * 2014-05-30 2014-08-11 Dreisbach & Jungmann Gmbh & Co. Kg Federzugeinrichtung
CN104033519A (en) * 2014-07-02 2014-09-10 安庆谢德尔汽车零部件有限公司 Horn-shaped compression spring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395845A (en) * 2020-04-16 2020-07-10 张峻华 Spring fixing device for shock-proof safety bin and mounting method thereof

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Publication number Publication date
JP2017113862A (en) 2017-06-29
JP6769030B2 (en) 2020-10-14
CN106914636B (en) 2019-09-20

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