CN1775474A

CN1775474A - Guide device

Info

Publication number: CN1775474A
Application number: CN200510127131.7A
Authority: CN
Inventors: 久里·绍博尔奇
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2004-11-17
Filing date: 2005-11-17
Publication date: 2006-05-24
Anticipated expiration: 2025-11-17
Also published as: DE102004055270A1; GB0523364D0; GB2420519B; GB2420519A; CN1775474B

Abstract

The invention relates to a guiding mechanism of a hand-held tool machine (12). A guide groove (14) is arranged on the guiding mechanism; the guide groove is used for matching a matching shaft (16) of the hand-held tool machine (12) in a penetrating way and guiding the matching shaft (16) at least in a first functional mode along a first freedom degree (18), wherein, the matching shaft is can be driven in an eccentric way; in addition, the guide groove is provided a fixing part (20) used for fixing the position of the matching shaft (16) in the guide groove (14) in at least a second functional mode, and the fixing part is driven to operate, wherein, the fixing part (20) is supported in a rotatable way.

Description

Guider

Technical field

The present invention relates to a kind of guider of hand held power machine, has a gathering sill, it be set for the fitted shaft that can be driven prejudicially by hand held power machine penetrate cooperate and to fitted shaft at least in one first duty along first free degree guiding, and have one be used at least one second duty with the fixed-site of fitted shaft in gathering sill, can be caused the fixture that works.

The invention still further relates to a kind of hand held power machine with described guider.

Background technology

A kind of hand held power machine that is integrated in a guider in the grinding plate that has is disclosed by GB2 338 197A.This grinding plate has: the gathering sill of a microscler hole shape-this gathering sill be used to lead fitted shaft that can be driven prejudicially of hand held power machine; And one be used for fitted shaft the fixed-site of gathering sill, can be caused the fixture that works.

This fixture has the first area, and this zone has the corresponding profile of a part with the profile of gathering sill.In second duty, overlapping and this fitted shaft of this zone and gathering sill can freely be moved in gathering sill.If this fitted shaft is driven prejudicially, then it gathering sill vertically on vibration and the lateral edges by gathering sill this grinding plate linearity on the direction that the longitudinal direction perpendicular to gathering sill extends is oscillatorily moved.

In addition, this fixture has a second area, and this zone has the profile that constitutes a pitch circle, and its radius is substantially equal to the radius of fitted shaft.In first duty this zone with gathering sill overlapping and enclose the effect this fitted shaft.This fixture is permanently connected with grinding plate on the direction of the free degree, so that in first duty this fixture on this direction with the fixed-site of fitted shaft with respect to grinding plate, and on the second direction that stretches perpendicular to the free degree position by gathering sill secure fit axle.Grinding plate is followed the eccentric motion of fitted shaft and oscillatory operation on the guide rail of track thus.

In order to change between first and second duties, but this fixture translation is bearing on the grinding plate movably.First duty that it is characterized by circular track for example is particularly suitable for the solution of the present invention is used in combination with the superfine milling machine that is used for flat surface grinding, and second duty that it is characterized by the linear osccilation campaign is particularly suitable for grinding seamed edge zone.

Summary of the invention

According to the present invention, a kind of guider of hand held power machine has been proposed, has a gathering sill, it be set for the fitted shaft that can be driven prejudicially by hand held power machine penetrate cooperate and to fitted shaft at least in one first duty along first free degree guiding, and have one be used at least one second duty with the fixed-site of fitted shaft in gathering sill, can be caused the fixture that works.Wherein, this fixture is supported rotationally.

According to the present invention, a kind of hand held power machine with described guider has been proposed also.

The present invention proposes, and this fixture is supported rotationally.Realize that is not thus at least at utmost had a guider stuck, that can change between mode of operation.The face of fixture and guider overlap joint can advantageously be constructed for a short time, can realize firm and a convertible guider of saving structure space thus.Because the overlapping face is little, can advantageously reduce fixture the blocking on guider that causes owing to described pollution.

At this, " setting " should also be interpreted as " design " and " equipment ".When the solution of the present invention is used in combination with a hand held power machine that is configured to superfine milling machine, obtain special advantage when promptly especially using in hand held power machine with a rectangular grinding plate.Can realize that the oscillating movement of grinding plate is parallel to the incline border district of this rectangle grinding plate and carries out.Favourable application in the zone of the seamed edge of workpiece can be implemented thus.But the present invention also can consider such configuration in theory, and hand held power machine comprises the shape of the Δ in other words or circular vibration instrument of a triangle in this configuration.Also can consider to be used in combination with eccentric grinder.

In a configuration of the present invention, advise that the pivot center of this fixture is consistent with the center of gathering sill.Rotate thus and can avoid a wobble area (Schwenkbereich), fixture is inswept this wobble area when rotational motion.

Suggestion in addition, this gathering sill is configured to elongated hole.Can realize the reliable guiding of fitted shaft in gathering sill thus.At this, the length of elongated hole advantageously with the diameter of the guideway of the diameter that is added fitted shaft itself by the diameter of the circus movement of the fitted shaft of eccentric drive or this fitted shaft and equate so that fitted shaft has the movement clearance space of the dual eccentricity order of magnitude that fitted shaft moves on the direction of the free degree of being determined by the longitudinal axis of elongated hole.In order to realize gapless at least as far as possible guiding, vertically the width in hole is substantially equal to the diameter of the guideway of fitted shaft or fitted shaft at least.

Advise that in another configuration of the present invention this fixture has at least one spigot surface, this spigot surface is overlapping with a spigot surface of gathering sill at least one position of rotation of fixture.In corresponding position of rotation, the restricted passage fixture in the movement clearance space of fitted shaft is advantageously avoided thus, and in corresponding position of rotation, this fixture can advantageously be supported the guide function of gathering sill.

Suggestion in addition, gathering sill has the side stop surface of the freedom of motion that is used to limit fitted shaft.Can avoid fitted shaft from gathering sill, laterally to slip away thus.

If fixture has a slotted eye, this slotted eye is at least basically similar in appearance to gathering sill, and this can reach this slotted eye and gathering sill is overlapping completely.In addition, by the similitude of this slotted eye, can advantageously realize production process at low cost.At this, " similar " notion should be understood on the meaning of geometry.

If this fixture has the slotted eye that a convex surface is constructed (Konvex), then can advantageously realize, during the rotational motion of fixture, avoid the formation in the recessed zone of the overlapping and definite mating groove by this slotted eye and gathering sill.The existence in recessed (Konkav) zone like this implies a kind of danger, that is, and and the stuck danger in mating groove of fitted shaft fitted shaft.

If guider has at least one sleeve member that is used for fitted shaft is engaged in gathering sill, then can advantageously realize fitted shaft good fit in gathering sill.In addition, by the material and/or the frame mode of chosen axis external member suitably, the sliding friction that forms when fitted shaft is moved in gathering sill advantageously keeps little.

At this, if this sleeve member comprises at least one rolling bearing, then this sliding friction can almost completely be avoided.Especially can use ball bearing or needle bearing as rolling bearing.

If this guider has at least one keeper that is used for fixture is fixed at least one position of rotation, then can avoid fixture is by mistake shifted out from position of rotation, this position of rotation is advantageously corresponding with a mode of operation.

If this guider has a locking system that comprises keeper, then can especially cosily realize the exercisable locking of guide.

If this guider has one and is used for the handgrip spare of rotational fixture manually, then can realize further comfortable.At this, this handgrip spare can be connected rigidly with fixture or for example form mechanical effect by cable traction device and fixture indirectly and be connected in firm mode.

Receive recessed zone fixture, circular if this guider has to be designed for, then can realize fixture on this guider especially cheaply and supporting reliably.

In addition, the present invention also can consider such configuration, and hand held power machine comprises a profiling unit (F ü hlereinheit) in this configuration, can fixture be worked by this profiling unit.Profiling unit that the hand held power machine that is configured to superfine milling machine or eccentric grinder can advantageously have a side direction for example is by being operated near this profiling unit of seamed edge and automatically fixed cell being worked and inoperative.

Description of drawings

Additional advantage is obtained by the following drawings.Embodiments of the invention shown in the drawings.Accompanying drawing, explanation and other application documents comprise big measure feature in combination.The professional can conform with the destination and investigate single feature and be combined into significant other combination.

Accompanying drawing is represented:

Superfine milling machine of Fig. 1 with vibration instrument,

Fig. 2 comprises the exploded view of the vibration instrument of a gathering sill, a fixture and a fitted shaft,

The vibration instrument with fixture in Fig. 2 of Fig. 3 in second duty,

The vibration instrument with fixture in Fig. 2 and Fig. 3 of Fig. 4 in first duty, and

The schematic diagram of a vibration instrument alternative, that have a switching mechanism of Fig. 5.

The specific embodiment

Fig. 1 illustrates a hand held power machine 12 that is configured to superfine milling machine, and it has a vibration instrument 10 that is configured to grinding plate, and the bottom surface of this vibration instrument has a velvet thread gluing layer, and sand paper can be connected with vibration instrument 10 by this velvet thread gluing layer.A guider is integrated in the vibration instrument 10.This hand held power machine 12 comprises a handle 42 and a dust collection bag 46, and this handle has a switch 44 integrated, that be used to connect and turn-off hand held power machine 12.The body of hand held power machine 12 holds by a plastic casing, and this plastic casing holds one at this unshowned motor, and this motor is by service cable 48 power supplies.This vibration instrument 10 is connected with the body of hand held power machine 12 by some elastic leg, these elastic leg produce an elastic force, and vibration instrument 10 can be resisted body in by the plane at vibration instrument 10 places the offset numbers millimeter of this elastic force ground with respect to hand held power machine 12.

Between vibration instrument 10 and described body, form, in the zone by the gap 52 of elastic leg cross-over connection, be provided with a handgrip spare 38, the operator changes between one first mode of operation and one second mode of operation by this handgrip spare, and vibration instrument 10 is done straight line, one dimension and is parallel to the oscillatory operation of the lateral edges 50 of vibration instrument 10 in first mode of operation.Should move on the track of circle or orbit-shaped by vibration instrument 10 in second mode of operation, the central point of vibration instrument 10 is with circus movement in this track, and the position of rotation of vibration instrument 10 keeps constant with respect to the body of hand held power machine 12.

Motor has unshowned, as can a to drive motor shaft here with being rotated, but on gland on this motor shaft a fitted shaft 16 (Fig. 2).This fitted shaft 16 has a dislocation, so that of fitted shaft 16 deviates from motor shaft and moves with the axis of an eccentricity with respect to motor shaft with its axis of symmetry towards the columniform part of vibration instrument 10, so that the rotational motion of motor shaft makes this columniform part of fitted shaft 16 produce an eccentric motion, have the axis that centers on motor shaft on the circle of the radius given abreast at the axis of symmetry described in this motion and rotating by eccentricity.

Sleeve member 32 sleeves are coupled to fitted shaft 16 in the gathering sill 14 by this sleeve member on the described columniform part of fitted shaft 16, and this gathering sill has the shape of the elongated hole that extends perpendicular to lateral edges 50.

In mating area, sleeve member 32 comprises a rolling bearing with interior ring and outer shroud, and ring is connected with fitted shaft 16 nothings with relatively rotating in this, and outer shroud contacts with gathering sill 14 formation.

The central point of gathering sill 14 constitutes recessed regional 40 a central point annular, circle, should be set for dish type fixture 20 of reception in recessed zone, this fixture has a slotted eye 30, this slotted eye be constructed to microscler hole shape and convex surface and on geometry similar in appearance to gathering sill 14.This fixture 20 is rotatably supported in the recessed zone 40, and wherein, the pivot center 22 of fixture 20 is consistent with the central point of gathering sill 14.

In first position of rotation of fixture 20 (Fig. 4), this position of rotation is corresponding with first mode of operation, and the slotted eye 30 of fixture 20 is aimed at gathering sill 14.This slotted eye 30 and gathering sill 14 have semicircular end face, and these end faces constitute side stop surface 28,28 ', and these side stop surface restriction fitted shaft are at the freedom of motion of gathering sill 14 inside and slotted eye 30 inside.Not only the cover plate of fixture 20 but also vibration instrument 10 is configured to bending ram sheet material spare.This gathering sill 14 and slotted eye 30 respectively have one around, the flange (Kragen) that is shaped.The flange inner face constitutes spigot surface 26,26 ' in the zone of the long side surface of the slotted eye 30 of fixture 20, these spigot surfaces are overlapping in the axial direction with other spigot surfaces 24,24 ' in first position of rotation, described other spigot surfaces are made of the flange inner face in the zone of the long side surface of gathering sill 14, like this, above-mentioned

spigot surface

24,24 ', 26,26 ' coplane in couples respectively.

In first position of rotation, this fitted shaft 16 can be along the vertically moving of gathering sill 14 in by side stop surface 28, the 28 ' boundary of determining, and

spigot surface

24,24 ', 26,26 ' stops moving longitudinally perpendicular to gathering sill 14.This gathering sill 14 has been determined one degree of freedom 18,, has determined the freedom of motion of fitted shaft 16 with respect to vibration instrument 10 that is.

If this fitted shaft 16 is moved on its track, and fixture 20 is arranged in first position of rotation, then cause that with the component motion of the parallel longitudinal of gathering sill 14 fitted shaft 16 moves along the free degree 18, and cause that perpendicular to the component motion of the free degree 18 trends vibration instrument 10 resists the elastic force ground skew of described elastic leg with respect to the body of hand held power machine 12.

Handgrip spare 38 is connected with fixture 20 and passes gap 52 and radially outward stretch out, and operating personnel can catch it and fixture 20 manually can be rotated in 90 ° angular range in recessed zone 40 by this handgrip spare 38 there.This angular range passes through in this unshowned stop limits.In second position of rotation with respect to 90 ° of first position of rotation rotations, the longitudinal axis of slotted eye 30 is stretched line ground perpendicular to the longitudinal axis of gathering sill 14 and is extended (Fig. 3).

In the position corresponding of handgrip spare 38 with first and second position of rotation, on vibration instrument 10, form hump shape keeper 34,34 ', when the operator with handgrip spare when corresponding position is produced, this handgrip spare 38 sliding described more keepers, at this, this handgrip spare 38 flexibly is out of shape, so these operating personnel must apply a power.This handgrip spare 38 and these keepers 34,34 ' therefore constitute a locking system 36, and this fixture 20 is fixed in first position of rotation and second position of rotation by this locking system.

In second position of rotation, the spigot surface 24,24 ' of this gathering sill 14 prevents that fitted shaft 16 is on perpendicular to the direction of the longitudinal axis of gathering sill 14 or be parallel on the direction of slotted eye 30 of fixture 20 and move.The spigot surface 26,26 ' of this fixture 20 prevents that fitted shaft 16 from moving along the free degree 18, and thus at second position of rotation, fixture 20 is with the fixed-site of fitted shaft 16 in gathering sill 14.By the rotation of fixture 20, therefore this fixture can be worked by causing and its fixing effect of performance in this second position of rotation.

If this fitted shaft 16 is moved on its track, and fixture 20 is positioned at second position of rotation, and then fitted shaft 16 motion of the axis of fitted shaft 16 in other words is converted to the orbital motion or the circular motion with respect to the body of hand held power machine 12 of vibration instrument 10.

Fig. 5 illustrates a vibration instrument 10 with guider of alternative with schematic representation.Use identical reference number for similar feature.In explanation, set forth basically and not the existing together of the embodiment shown in Fig. 1-4.Can be referring at the embodiment shown in Fig. 1-4 for the feature that remains unchanged.

Vibration instrument 10 shown in Figure 5 comprise a switching mechanism 54 and two be used for visiting the seamed edge that touches ambient parameter-be workpiece to be processed-spy touch part 56,56 '.

In first duty, fixture 20 can around turning cylinder 22 free swaying ground supportings on vibration instrument 10 and at work by one in this unshowned fitted shaft alternation ground swing, and fitted shaft in gathering sill 14 along one degree of freedom 18 move and produce vibration instrument 10 moving perpendicular to the alternation on the direction of the longitudinal direction extension of gathering sill 14.

If hand held power machine 12 is near the seamed edge of a workpiece, then this switching mechanism 54 automatically is transformed into guider in first duty.If this seamed edge touches these spies and touches part 56,56 ' one, then this spy is touched part around the inwardly swing and retainer 60 is moved by a backstop 64 towards the direction that deviates from fixture 20 of separately axle 58,58 ', this retainer is bearing on the vibration instrument 10 movably, and cooperating of the pin of the fork-shaped end regions of retainer 60 and fixture 20 automatically throws off and this fixture 20 can be followed the motion of fitted shaft thus.

Do not touch part 56,56 ' if there is pressure to act on spy, then elastic component 62 makes retainer 60 automatically move towards the direction of fixture 20, the fork-shaped end regions that reaches this retainer 60 slides on the pin of fixture 20, so that the fixed-site of the position of fixture 20 and fitted shaft 16 is in gathering sill.Guider is switched to second mode of operation then, should move circularly by vibration instrument 10 in this mode of operation.

Claims

1. the guider of hand held power machine (12), has a gathering sill (14), it is set for the fitted shaft (16) that can be driven prejudicially by hand held power machine (12) and penetrates and cooperate and fitted shaft (16) is led along first free degree (18) in one first duty at least, and have one be used at least one second duty with the fixed-site of fitted shaft (16) in gathering sill (14), can be caused the fixture (20) that works, it is characterized in that this fixture (20) is supported rotationally.

2. guider according to claim 1 is characterized in that, the pivot center (22) of this fixture (20) is consistent with the central point of gathering sill (14).

3. according to the described guider of one of above claim, it is characterized in that this gathering sill (14) is configured to elongated hole.

4. according to one of aforesaid right requirement described guider, it is characterized in that this fixture (20) has at least one spigot surface (26,26 '), described spigot surface is overlapping with the spigot surface (24,24 ') of gathering sill (14) at least one position of rotation of this fixture (20).

5. one of require described guider according to aforesaid right, it is characterized in that, gathering sill (14) has some side stop surfaces (28,28 ') that are used to limit the freedom of motion of fitted shaft (16).

6. according to one of aforesaid right requirement described guider, it is characterized in that this fixture (20) has a slotted eye (30), this slotted eye is similar at least basically to gathering sill (14).

7. according to one of aforesaid right requirement described guider, it is characterized in that this fixture (20) has a slotted eye (30), this slotted eye constitutes convexly.

8. according to one of aforesaid right requirement described guider, it is characterized in that, be provided with at least one sleeve member (32), fitted shaft (16) is engaged in the gathering sill (14) by it.

9. guider according to claim 8 is characterized in that, this sleeve member (32) comprises at least one rolling bearing.

10. according to one of aforesaid right requirement described guider, it is characterized in that, be provided with at least one keeper (34,34 '), be used for fixture (20) is fixed at least one position of rotation.

11. guider according to claim 10 is characterized in that, is provided with the locking system (36) that comprises this keeper (34).

12. according to one of aforesaid right requirement described guider, it is characterized in that, be provided with one and be used for the handgrip spare (38) of rotational fixture (20) manually.

13., it is characterized in that according to one of aforesaid right requirement described guider, be provided with the recessed zone (40) of a circle, this recessed zone is set for and receives fixture (20).

14. according to one of aforesaid right requirement described guider, it is characterized in that, be provided with one and be used to make fixture (20) works, switching mechanism (54) automatically.

15. one of require described guider according to aforesaid right, it is characterized in that, be provided with and be used to visit the spy of touching environment parameter and touch part (56).

16., it is characterized in that this switching mechanism (54) can be touched part (56) by spy and be triggered according to claim 14 and 15 described guiders.

17. have a guider hand held power machine (12), this guider comprises a gathering sill (14), it is set for to be penetrated by the fitted shaft (16) that can be driven prejudicially and cooperates and fitted shaft (16) is led along first free degree (18) in one first duty at least, and have one be used at least one second duty with the fixed-site of fitted shaft (16) in gathering sill (14), can be caused the fixture (20) that works, it is characterized in that this fixture (20) is supported rotationally.