CN100482415C

CN100482415C - Device for reducing vibration of superfine milling machine

Info

Publication number: CN100482415C
Application number: CNB2004100752349A
Authority: CN
Inventors: 于尔根·黑塞; 艾克·U·冯·施佩希特
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2003-09-12
Filing date: 2004-09-13
Publication date: 2009-04-29
Anticipated expiration: 2024-09-13
Also published as: DE10342152A1; GB2405821B; CN1593848A; GB0602750D0; GB0420040D0; GB2420732A; GB2405821A; GB2420732B

Abstract

The invention relates to a kind of device which is used for shock absorption when the super fine grinding machine is running. The device has at least one vibration arm, one end of which is fixed to the first seat of the machine rind, and the other is to the second seat of one grinding tray of the machine. At least one ends of the vibration arm and the correspondent seat form a coupling hinge, in order that the machine runs quietly with little vibration. If the vibration arm is a coiled spring, the machine can attain the same effect.

Description

Be used to reduce the device of the vibration of superfine milling machine

Technical field

The present invention relates to a kind of device that is used to reduce the vibration of superfine milling machine.

Background technology

By German utility model DE 298 01 109 U1 known a kind of superfine milling machine, wherein,, be provided with the swing element that is bearing in movingly between these two parts for replacement is injection-moulded in vibration leg between housing and the grinding dish.Each swing element is provided with spherical rolling ball body on both ends, they are supported in the spherical shell of housing or grinding dish.End at each swing element constitutes a keeper, and this keeper stretches in the spherical shell by a hole.Though reduced the vibration of superfine milling machine thus, this form of implementation takes a lot of trouble during fabrication.

By German laid-open document DE 100 60 855 A1 known a kind of superfine milling machine, it has the vibration leg, these vibration legs can reduce the vibration transmission of grinding dish to the housing.These vibration legs are non-resilient column legs made of aluminum, they are respectively surrounded by an O RunddichtringO of being done by rubber, these O RunddichtringOs be positioned on the housing or on the oscillating plate the seat in, also can realize of the good uncoupling of grinding disc radial active force thus with respect to housing.

Summary of the invention

According to the present invention, a kind of device that is used to reduce the vibration of superfine milling machine is proposed, has at least one vibration leg, the first end of this vibration leg is placed among on the housing of this superfine milling machine one first, its the second end is placed among on the grinding dish of this superfine milling machine one second, wherein, at least one in two ends of vibration leg constitutes a hinge that goes couple of force to close together with the seat of corresponding configuration.

According to the present invention, a kind of device that is used to reduce the vibration of superfine milling machine is also proposed, has at least one vibration leg, the first end of this vibration leg is placed among on the housing of this superfine milling machine one first, its the second end is placed among on the grinding dish of this superfine milling machine one second, wherein, this vibration leg is a helical spring.

By contrast, the advantage of device that the present invention is used to reduce the vibration of superfine milling machine is: by making vibration leg and corresponding hinge that goes couple of force to close (kraftentkoppeltes) of formation, obtaining a kind of being easy to makes and low-cost device, wherein, can realize of the uncoupling of grinding disc radial active force with respect to housing.By the vibration leg is constituted as helical spring, obtain above-mentioned advantage equally.

Basically the seat that constitutes a ball and configuration corresponding with them by in two ends that make the vibration leg at least one constitutes a ball-and-socket basically, can obtain one of hinge that couple of force closes especially simply configuration.This structure with the ball in the embedding ball-and-socket can be made especially at low cost.Particularly advantageous is that the vibration leg all constitutes ball and is embedded into respectively in the seat of a ball-and-socket type on two ends.

By making ball-and-socket surround making more than 50% and with elastoplast of ball, ball can be pressed in the ball-and-socket, make that ball is remained in the ball-and-socket well.

By making the vibration leg made of plastic, whole device very gently and in addition vibrates leg and can make with being dirt cheap.By the vibration leg is made with metal, can guarantee that the heat that is produced by the vibration leg that is in the persistent movement is discharged well in superfine milling machine work.

By the vibration leg integrally being constituted and/or constituting symmetrically around its central longitudinal axis rotation, the enforcement that can reach the vibration leg is very simple, and this makes and can make at low cost.

By helical spring being pre-compacted and becoming block, make axial force, promptly compressing with operating physical force in grinding area can no problem ground be transmitted and can be avoided helical spring buckling largely in addition.

Be provided with at least one other damping element, this damping element is injection-moulded between housing and the grinding dish, can guarantee by this: reset force always makes oscillating plate be moved back in its home position.

Description of drawings

Explain embodiments of the invention in detail by accompanying drawing in the following description.

Accompanying drawing is represented:

Fig. 1 has the section that the present invention who is in the ball-shaped end in the ball-and-socket shape seat vibrates first embodiment of leg,

A schematic diagram of the combination of the vibration leg in Fig. 2 vibration leg shown in Figure 1 and the traditional injection moulding, and

The section of one second embodiment of Fig. 3, wherein, the vibration leg constitutes helical spring according to the present invention.

The specific embodiment

Fig. 1 represents one first embodiment of the device of a vibration that is used to reduce superfine milling machine.This superfine milling machine has a housing 2 and a grinding dish 3, and they are in known manner as the part of superfine milling machine.Wherein, grinding dish 3 is connected with the driving shaft of superfine milling machine by known drive unit.Because these devices are known and are not themes of the present invention, therefore they are no longer described and also do not express in the drawings.

This device that is used to reduce to vibrate is positioned between the back side of the downside of housing 2 and grinding dish 3.It is made up of the vibration leg 1 of a rigidity, the first end 10 of this vibration leg be embedded among on housing 2 downsides one first 20 and simultaneously its second end 11 be embedded among on the back side of grinding dish 3 one second 30.

Vibration leg 1 constitutes symmetrically around its central longitudinal axis 13 rotations.It is made of plastic and integrally constitute.The advantage that plastics have is that it is very light.But this vibration leg 1 can be made with metal equally.The advantage that the metal embodiment has is that the hot radical that produces because the motion of grinding dish 3 reaches the friction in the

end

10,11 present 20,30 that takes place thus can be conducted well in good thermal conductivity.

Therefore two

ends

10,11 of vibration leg 1 equally constitute, and two

seats

20,30 that support these two

ends

10,11 constitute too, only describe by first end 10 that vibrates leg 1 and first 20 combination of forming of housing 2 below.These descriptions correspondingly also are suitable for by the second end 11 and second the 30 affiliated combination of forming.

First end 10 with one first ball 10 ' form constitute.For can hold well first ball 10 ', first 20 be constituted as one first ball-and-socket 20 '.Form thus one can with people's shoulder joint or the comparable hinge of hip joint.Wherein, first ball 10 ' hemisphere above by first ball-and-socket 20 ' encirclement.Thus, this vibration leg 1 can not be connected with housing 2 when superfine milling machine normally moves with losing.This also is suitable for relating to the opposite side of grinding dish 3.First ball 10 ' before work, be clamped into, first ball-and-socket 20 of vibration leg 1 ' in.For this reason, first ball-and-socket 20 ' constitute with a kind of flexible plastics.First ball-and-socket 20 ' constitute integratedly with housing 2 is because such configuration can be made with the manufacturing of housing 2 in an operation very simply.But also can be, first ball-and-socket 20 ' or generally say first 20 be connected with the downside of housing afterwards as independent part.

By by first ball 10 ' be connected with the diagram of first ball-and-socket 20 ' form, obtain a hinge, this hinge can not be delivered on the housing 2 radial load and the moment that are parallel to 3 effects of grinding dish from grinding dish 3.Traditional system when grinding dish 3 carries out oscillating movement, between vibration leg 1 and housing 2, cause radial loop around force component, opposite with traditional system, in the form of implementation that constitutes hinge according to the present invention, do not have to vibrate and be delivered in the housing 2.On the contrary, the power of axial action is promptly perpendicular to the power of grinding dish 3 effect, because little skew (degree of eccentricity) and fixing grinding dish (coiling the supporting in the plane) can be transmitted.Can reach thus: compressing in the grinding work is passed on the grinding dish 3 with operating physical force and reaches good grinding result thus.

First end 10 except constitute first ball 10 ' also can be other any morphology with continuous bend surface.For example first end 10 also can have the surface that cross section is parabola shaped or hyperbola.First 20 surface only must be coordinated mutually with this shape, obtains a hinge that activity is as well as possible.

Fig. 2 schematically shows a bigger part of the intermediate space between housing 2 and the grinding dish 3.On the left side schematically shows a vibration leg 1, and the vibration leg 1 of it and Fig. 1 constitutes similarly.This vibration leg also respectively have at its both ends a ball 10 ', 11 ', each ball embed respectively be ball-and-socket 20 ', 30 ' form the

seat

20,30 in.Difference is, ball-and-socket 20 ', 30 ' be no more than ball 10 ', 11 ' hemisphere and do not surround thus ball 10 ', 11 '.Thus, though will ball 10 ', 11 ' sandwich ball-and-socket 20 ', 30 ' in, therefore vibration leg 1 can not kept being present in 20,30 with losing.Here also obtain a hinge, this hinge makes the power of radial effect and moment not to be delivered on the housing 2 from grinding dish 3.

Except that vibration leg 1, also additionally constitute an other damping element 5 on the right.Here relate to a vibration leg as from traditional form of implementation commonly known in the art.This other damping element 5 constitutes symmetrically with respect to its central longitudinal axis rotation and makes with flexible plastics.It is injection-moulded on housing 2 and the grinding dish 3.Obtain a reset force by this other damping element 5, this reset force makes grinding dish 3 automatically return to again in its radially home position with respect to housing 2.

By of the present invention have new-type vibration leg 1 be used to reduce the device of vibration of superfine milling machine and the combination of the other damping element 5 in the known injection moulding, under the situation that grinding dish 3 well resets, reach favorable damping simultaneously.Wherein, the present invention vibrates layout between leg 1 and the known damping element 5 and quantity is distributed and can freely be selected by the producer according to each applicable cases.

Fig. 3 expresses the part that the present invention is used to another embodiment of the device that reduces to vibrate.Between housing 2 and grinding dish 3, settled a helical spring 42 here.The first end 40 of this helical spring 42 is clamped among first 20 of constituting on housing 2 downsides, and its second end 41 is clamped among on the back side that is arranged in grinding dish 3 second 30.This helical spring 42 constitutes symmetrically around its central longitudinal axis 43 rotations.Two

seats

20,30 constitute like this, make helical spring 42 can be pressed into like this in these seats, so that shape are maintained in these

seats

20,30 sealedly diametrically.

Helical spring 42 is pre-compacted, so that it becomes bulk.Each circle of helical spring 42 does not have spring travel closely against each other thus.By this, operator's axial pressing force can be delivered on the grinding dish 3 and can prevent helical spring 42 bucklings largely in addition.Simultaneously, axial force, i.e. thrust/operating physical force when grinding is worked is transmitted because little skew (degree of eccentricity) and grinding dish 3 are fixed in the bearing that coils the plane.Simultaneously, the power of radial effect is decayed very doughtily, and these power cause the vibration of housing 2 in traditional superfine milling machine.

Helical spring 42 is not forcibly to become block, is preferred mode but become bulk, because axial force also can be resisted the spring force of helical spring 42 and is delivered on the grinding dish 3 from housing 2 when grinding is worked.Equally, also can there be other fixed form the

end

40,41 of helical spring 42 in two

seats

20,30.

A superfine milling machine can or be equipped the vibration leg 4 of 42 forms of spring in the shape of a spiral of predetermined quantity, perhaps equip the combination of the vibration leg 1 that is rigidity vibration leg 1 form shown in this vibration leg 4 and Fig. 1 and 2, a this rigidity vibration leg 1 and a hinge that 20,30 mating reactions conduct goes couple of force to close.In addition also can be combined with the traditional damping element 5 shown in Fig. 2 right side.In principle can also combination mutually in a superfine milling machine with all three illustrated

vibration legs

1,4 and damping element 5.In all combinatory possibilities,

single vibration leg

1,4 and damping element 5 are so that the layout and the quantity relations of distribution are contained on the superfine milling machine arbitrarily.

Claims

1. be used to reduce the device of the vibration of superfine milling machine, has at least one vibration leg (4), the first end of this vibration leg (40) is placed in first (20) on the housing (2) of this superfine milling machine, its the second end (41) is placed in second (30) on the grinding dish (3) of this superfine milling machine, and it is characterized in that: this vibration leg (4) is a helical spring (42).

2. according to the device of claim 1, it is characterized in that: helical spring (42) is pre-compacted and becomes block.

3. according to the device of claim 1 or 2, it is characterized in that: have at least one other damping element (5), this damping element is injection-moulded between housing (2) and the grinding dish (3).

4. according to the device of claim 1 or 2, it is characterized in that: have at least one other vibration leg (1).

5. according to the device of claim 4, it is characterized in that: at least one in two ends (10,11) of described other vibration leg (1) constitutes a hinge that goes couple of force to close (12) together with the seat (20,30) of corresponding configuration.

6. according to the device of claim 4, it is characterized in that: at least one in two ends (10,11) of described other vibration leg (1) constitutes a ball (10 ', 11 ') basically, the seat of configuration corresponding with it constitutes a ball-and-socket (20 ', 30 ') basically.

7. according to the device of claim 6, it is characterized in that: two ends (10,11) of described other vibration leg (1) constitute a ball (10 ', 11 ') respectively basically, the seat of configuration corresponding with them (20 ', 30 ') constitutes a ball-and-socket respectively basically.

8. according to the device of claim 6, it is characterized in that: these ball-and-sockets (20 ', 30 ') surround making more than 50% and with flexible plastics of ball (10 ', 11 ').

9. according to the device of claim 4, it is characterized in that: described other vibration leg (1) is made with the plastics or the metal of rigidity.

10. according to the device of claim 4, it is characterized in that: described other vibration leg (1) integrally and/or around its central longitudinal axis rotation constitutes symmetrically.