CN102990618A

CN102990618A - Portable machine tool

Info

Publication number: CN102990618A
Application number: CN2012103283554A
Authority: CN
Inventors: P·施内尔; H·沙伊布勒
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2011-09-07
Filing date: 2012-09-06
Publication date: 2013-03-27
Anticipated expiration: 2032-09-06
Also published as: CN102990618B; FR2979563A1; DE102011082271B4; DE102011082271A1

Abstract

The portable machine tool (10) has a support unit (12) to support on a work piece, a guide unit (14) with a spring element, and a housing unit (20) which is movably mounted relative to support unit by the guide unit. A damping unit is provided to dampen a movement of the housing unit in a direction as a result of the spring force of the spring element of the guide unit. The direction faces away from the support unit. The damping unit comprises a damping element formed of elastomer. The guide unit has a guide element, on which the damping element is arranged.

Description

Hand tool

Technical field

The present invention relates to a kind of hand tool, mill machine on especially.

Background technology

Hand tool, to mill machine on especially be known, and it comprises: be used for being bearing in the bearing unit on the workpiece; Pilot unit, described pilot unit has spring element; And housing unit, described housing unit is supported with respect to bearing unit movingly by pilot unit.

Summary of the invention

The present invention relates to a kind of hand tool, mill machine on especially, comprising: at least one is used for being bearing in the bearing unit on the workpiece; At least one pilot unit, described pilot unit has at least one spring element; With at least one housing unit, described housing unit is supported with respect to bearing unit movingly by pilot unit.

The present invention's suggestion, hand tool comprises at least one damping unit, described damping unit has at least one damping element, and described damping element is arranged for the motion towards the direction that deviates from bearing unit owing to the spring force of described at least one spring element of pilot unit of the described housing unit of damping." hand tool " should especially be construed as the toolroom machine of processing work at this, and it can the person of being operated be carried without transportation machine ground." setting " should especially be understood to specialized designs and/or special configuration.Hand tool especially has less than 40kg, preferably less than 10kg with particularly preferably less than the quality of 5kg.Particularly preferably, hand tool is constructed to mill machine.But can expect that also the hand tool personnel of possessing skills think significant other design form, it comprises pilot unit, housing unit and bearing unit at least." bearing unit " should especially be interpreted as a unit at this, this unit is bearing on the workpiece in the normal carrying at hand tool during by the portable dam machine workpieces, especially the bearing-surface by bearing unit, and it is arranged for and during the processing work hand tool is being supported on the workpiece.Particularly preferably, bearing unit is constructed to slide and/or base plate.

Statement " pilot unit " should especially be understood to a unit at this, it be arranged for when parts move in a plane by transverse at least one power of enforcement of the direction of motion along these parts of predetermined locus guiding.Particularly preferably, pilot unit is constructed to the straight-line guidance unit, and it is arranged for when moving with respect to bearing unit point-blank guide housing unit." power of enforcement " especially should be understood to a power at this, and this power is arranged for and stops parts in the motion at least one direction and/or when effect is preset in and keeps this parts when track on the parts moves by power at one.Particularly preferably, housing unit is directed to along the lifting axis point-blank by pilot unit.The spring element of pilot unit preferably is constructed to compression spring.But can expect that also the spring element personnel of possessing skills think significant other design form, for example as tension spring.Housing unit is motor shell unit or milling basket in this preferable configuration

The motor shell unit can have version or the shell construction form of tank shape.Preferably, the motor shell unit has tank shape version or a kind of combination that is comprised of tank shape version and shell construction form, and at least two handgrip shells interconnect along a connection plane by the lifting Axis Extension of the vertical axis of hand tool, especially hand tool by Connection Element, for example screw in this combination.

Statement " being supported movingly " especially should limit housing unit with respect to the support pattern of base unit at this, wherein, housing unit especially with the strain uncoupling of housing unit ground have along at least one axis along greater than 1mm, be preferably greater than 10mm and particularly preferably greater than the possibility of moving of the distance of 20mm.But can expect that also the housing unit in conversion or additionally personnel of possessing skills is thought significant other motion possibility, for example around at least one axis with greater than 10 °, be preferably greater than 45 ° and particularly preferably greater than the motion possibility of 60 ° angle." damping element " especially should be understood to the element of spring in context, for example the element of the compound of elastomer, helical spring, disk spring, involute spring, spring and/or other spring that the technical staff sees fit." element of spring " especially should be understood to an element in context, its absorbed energy and again releasing energy at least in part under reversible distortion, wherein, distortion be preferably greater than spring element longitudinal extension length 2%.Damping element preferably has less than 500N/mm ², preferably less than 100N/mm ²Particularly preferably less than 50N/mm ²Elastic modelling quantity.But damping element especially elastic compression surpasses 0.1mm, preferably surpasses 1mm and particularly preferably surpass 3mm.By the design form according to hand tool of the present invention, advantageously damping when housing unit because the spring force of the spring element of pilot unit and impact during towards the direction motion that deviates from bearing unit.Therefore, the parts of hand tool can be advantageously protected.This can advantageously realize the long life of the parts of hand tool.In addition, can advantageously obtain high-quality impression for the operator of hand tool because at housing unit because the spring force of the spring element of pilot unit and interference noise when rebounding back to the direction of bearing unit is maintained at very little.Compressibility owing to damping element can be implemented advantageously in the direction of bearing unit above the accurate adjustment of the cutting depth of 0.5mm when arriving end stop in addition.

In addition suggestion, pilot unit has at least one director element, and damping element is arranged on this director element.Director element preferably is constructed to the straight-line guidance post." straight-line guidance post " especially should be understood to the parts with longitudinal extension length at this, longitudinal extension length is greater than the laterally extending length that is substantially perpendicular at least the extension of longitudinal extension length of these parts, wherein, these parts are especially by realizing along the straight-line guidance greater than the distance of 10mm with the mating reaction of at least one other parts.Preferably, the longitudinal extension length of straight-line guidance post in the confined state of straight-line guidance post at least substantially parallel to the lifting Axis Extension.Preferably, the straight-line guidance post consists of cylindrically.Particularly preferably, straight-line guidance post hollow cylinder ground consists of.But can expect that also the straight-line guidance post personnel of possessing skills think significant other design form." substantially parallel " especially should be understood to a direction with respect to the orientation of reference direction at this, especially in a plane, wherein, this direction with respect to reference direction have especially less than 8 °, advantageously less than 5 ° with particularly advantageously less than 2 ° deviation.Statement " perpendicular " should especially limit a direction with respect to the orientation of reference direction at this, wherein, especially in a plane, observe, this direction and reference direction press from both sides into one 90 ° angle and this angle have especially less than 8 °, advantageously less than 5 ° with particularly advantageously less than 2 ° maximum deviation.Director element preferably is permanently connected by force closure connection, for example interference fit connection and bearing unit by an end.But can expect that also director element thinks that by the technical staff significant other connection type and bearing unit are permanently connected, for example by the sealed connection of shape and/or the sealed connection of material.Can expect equally that in addition damping element is arranged on the technical staff to be thought on significant another parts, so that damping is impacted.By the damping that can structurally realize simply according to hand tool of the present invention the motion of housing unit.

Preferably, damping element is arranged on the excircle of director element." excircle " especially should be understood to the side face of parts or the face corresponding with side face of parts at this.But also can expect, observe along the lifting axis, damping element be arranged on director element another seem on the significant position for the technical staff, for example be arranged on director element on the side of bearing unit.Damping element can be advantageously because housing unit moves towards the direction that deviates from bearing unit owing to the spring force of the spring element of pilot unit is supported on the director element when compressing.

In addition suggestion, damping element is supported movingly with respect to director element.Damping element therefore preferably have along at least one greater than 1mm, be preferably greater than 10mm and particularly preferably greater than the distance of 20mm move possibility and/or around at least one axis with greater than 10 °, be preferably greater than 45 ° and particularly preferably greater than the possibility of moving of 60 ° angle, especially with the mode of the strain uncoupling of damping element.But can expect that also damping element and director element are permanently connected, so as damping since the spring force of the spring element of pilot unit by the kinetic impact of housing unit towards the direction that deviates from bearing unit.By can advantageously damping element being integrated in the hand tool that has existed according to design form of the present invention.

Preferably, housing unit has at least one and takes element, and this is taken element and is arranged at housing unit and makes damping element towards the direction motion of bearing unit against the spring force of spring element during towards the direction motion of bearing unit.Preferably, take element and be constructed to protuberance or shoulder, housing unit against the spring force of spring element during towards the direction motion of bearing unit damping element abut on the protuberance or on shoulder.This can advantageously guarantee the damping function of damping element.

In addition suggestion, damping unit have at least one backstop energy and introduce element, and it is set up to use the backstop energy is incorporated in the damping element in large area.The backstop energy is introduced element and preferably is made of parts that separate to consist of with damping element.But can expect that also the backstop energy is introduced element and damping element consists of integratedly." integratedly " should be understood to that especially material connects in locking manner at least, for example think significant other technique by welding procedure, technique for sticking, Shooting Technique and/or technical staff, and/or advantageously in a piece material, be shaped, for example pass through by the manufacturing of a foundry goods and/or by the manufacturing in one pack system or multicomponent injection technique and preferred by a single blank manufacturing.Statement " in large area introduce " especially should be defined as at this, and the backstop energy is introduced element abuts in this side of damping element at least in a side of damping element the surpassing 60%, preferably surpass 70% and particularly preferably surpass on 80% of area.Preferably, the backstop energy is introduced element and is constructed to dish, and it is arranged on the director element movingly with respect to director element.But can expect that also the backstop energy is introduced the element personnel of possessing skills and thought significant other design form.

Advantageously, damping element is made of elastomer.But can expect that also damping element thinks that by the technical staff significant other material consists of, for example thermoplastic polyurethane etc.This can produce damping element inexpensively, it can be simply aspect moulding by Shooting Technique and predetermined form fit.

Should not be limited to above-mentioned purposes and embodiment according to hand tool of the present invention at this.In particular, according to hand tool of the present invention for satisfy working method described here can have one from each element, parts and element number are different as mentioned herein quantity.

Description of drawings

Other advantage is drawn by the following drawings.Embodiments of the invention shown in the drawings.Accompanying drawing, specification and claim combine and contain large measure feature.The technical staff also considers individually aptly these features and they is formed significant other combination.It illustrates:

Fig. 1 illustrates according to hand tool of the present invention with schematic diagram;

Fig. 2 illustrates cutaway view according to hand tool of the present invention with schematic diagram; With

Fig. 3 illustrates the detailed view according to the regional A of Fig. 2 according to the damping element of the damping unit of hand tool of the present invention with schematic diagram.

The specific embodiment

Fig. 1 illustrates a hand tool 10 that is configured to mill machine, and it comprises that one is used for being bearing in the bearing unit 12 on the workpiece (not being shown specifically at this), pilot unit 14(Fig. 2 that has at least one spring element 16) and a housing unit 14 that is supported movingly with respect to bearing unit 12 by pilot unit 14.But housing unit 20 by pilot unit 14 along the lifting axis 34 of hand tool 10 with respect to bearing unit 12 translational motions be supported.Pilot unit 14 comprises two

spring elements

16,18 altogether at this.But can expect that also pilot unit 14 has the

spring element

16,18 of the quantity that is different from two.

Spring element

16,18 is arranged on the direction that deviates from bearing unit 12 housing unit 20 loading spring power.Housing unit 20 is constructed to the motor shell unit, and the driver element 36 of hand tool 10 is set in the motor shell unit.Driver element 36 is constructed to motor, and this motor is arranged for the tool fitting 38 that drives rotatably hand tool 10.But what also can expect is, driver element 36 personnel of possessing skills think significant another kind of design form, for example as air motor or as the design form of internal combustion engine etc.Tool fitting 38 is constructed to clamp, and it is arranged for and receives the plug-in type cutter (not being shown specifically at this) that is used for processing work (not being shown specifically at this).

In addition, hand tool 10 has a milling depth adjuster 40 that is used for the characteristic parameter of accurate adjustment hand tool 10.Characteristic parameter is made of lifting distance at this.The accurate adjustment of characteristic parameter is undertaken by milling depth adjuster 40, this by one for the technical staff known mechanical mechanism (referring to for example DE 3824200C1) carry out.In addition, hand tool 10 comprises milling depth coarse adjustment unit 42 by known way, and it can be conditioned step by step.Milling depth coarse adjustment unit 42 comprises a gauge bar 46 that arranges movably at least substantially parallel to the rotation 44 of tool fitting 38, this gauge bar can comprise a show tags 50 by pinching screw 48 lockings of milling depth coarse adjustment unit 42 and in the upper end, reads the scale 52 that is installed on the housing unit 20 that is configured to the motor shell unit by this show tags.Milling depth coarse adjustment unit 42 comprises the capstan head backstop 54 on the side of the housing unit 20 that is configured to the motor shell unit that can be rotatably set in bearing unit 12 in addition, capstan head backstop has stop element 56 with known manner, and this stop element is provided as the backstop of gauge bar 46 during towards the motion of the direction of bearing unit 12 at the housing unit 20 that is configured to the motor shell unit.Be configured to mill the hand tool 10 of machine so at least basically have known design form of a kind of technical staff.

In addition, hand tool 10 comprises damping unit 22(Fig. 2), it has at least one damping element 24, and damping element is arranged for damping housing unit 20 because the spring element 16 of

pilot unit

14,18 spring force and towards the motion of the direction that deviates from bearing unit 12.Damping element 24 is made of elastomer at this.The damping element 24 annular ground that are made of elastomer consist of.But can expect that also damping element 24 personnel of possessing skills think significant other design form, for example as having polygonal of circular dead slot etc.Pilot unit 14 has at least one director element 26 at this, and damping element 24 is arranged on the director element.Pilot unit 14 has two

director elements

26,28 altogether, and wherein, damping element 24 is arranged on these two director elements 26, one of 28 upper (Fig. 2).But can expect that also pilot unit 14 has a

director element

26,28 that is different from two

quantity.Director element

26,28 is configured to the straight-line guidance post.Can expect that in addition damping unit 22 has two damping elements 24, wherein, each damping element 24 is arranged on two director elements 26, one of 28.

Director element

26,28 extends in confined state at least basically in parallel to each other.In addition,

director element

26,28 is substantially perpendicular to bearing unit 12 at least in confined state bearing-surface 58 extends, and bearing unit 12 is bearing on the workpiece when the processing work by this bearing-

surface.Director element

26,28 by interference fit connect with the technical staff known mode be connected with method and be connected with bearing unit 12.At this,

director element

26,28 is constructed to hollow cylinder.Known mode and method are arranged in the

director element

26,28

spring element

16,18 with the technical staff.A plurality of

guide posts

60,62 of pilot unit 14 are arranged in the

director element

26,28 in

addition.Guide post

60,62 is surrounded by

spring element

16,18 at this.

Spring element

16,18 respectively by an end portion supports

corresponding director element

26,28 and/or bearing unit 12 on and

spring element

16,18 be supported on respectively taking on the protuberance 64,66 of corresponding guide post 60 by another

end.Guide post

60,62 is connected with housing unit 20 regularly in the side back to bearing unit 12 respectively.

By hand tool 10 processing work the time, in order to excise the workpiece particulate, housing unit 20 overcomes

spring element

16,18 spring force towards the direction motion of bearing unit 12, until reach cutting depth desirable and that adjust by milling depth coarse adjustment unit 42 before.After reaching the cutting depth of hope, housing unit 20 is attached troops to a unit by one, and known mode and method are fixed in the position with respect to bearing unit 12 with the technical staff in director element 26, one of 28 clamping element.Next can regulate again cutting depth by milling depth accurate adjustment unit 40 when needed.When housing unit 20 moved towards the direction of bearing unit 12, housing unit 20 was directed to by pilot unit 14.At this,

spring element

16,18 compressed and

guide posts

60,62 in straight-

line guidance post

26,28 with respect to

director element

26,28 motions.Housing rounding 20

surrounds director element

26,28 by the guiding area 68,70 of housing unit 20.Therefore,

director element

26,28 the excircle guiding area 68,70 at housing unit 20 in the motion of housing unit 20 slides.Damping element 24 is arranged on two director elements 26, one of 28 the excircle at this.Therefore, damping element 24 is arranged in the guiding area 68, one of 70 zone of housing unit 20.In addition, damping element 24 is supported movingly with respect to director element 26,28.At this, damping element 24 is bearing on the director element 26 movingly, and damping element 24 is arranged on the excircle of director element.

When housing unit 20 moved towards the direction of bearing unit 12, damping element 24 moved towards the directions of bearing unit 12 equally.At this, housing unit 20 has at least one and takes element 30(Fig. 3), this is taken element and is arranged at housing unit 20 and makes damping element 24 towards the direction motion of bearing unit 12 against

spring element

16,18 spring force during towards bearing unit 12 motion.Take element 30 and consisted of by the annular shoulder 72 of housing unit 20, it be arranged on housing unit 20 on the inboard of damping element 24.But also can expect, take element 30 personnel of possessing skills and think significant other design form.

In addition, damping unit 22 has at least one backstop energy and introduces element 32, and it is arranged for the backstop energy is incorporated into (Fig. 3) in the damping element 24 in large area.Damping unit 22 altogether has two backstop energy and introduces element 32,74.These backstop energy are introduced element 32,74 and are constructed to the dish of annular at this.Damping element 24 is arranged between the backstop energy introducing element 32,74 along a direction of extending at least substantially parallel to lifting axis 34.Therefore, the backstop energy introduce element 32, one of 74 in confined state, be arranged on damping element 24 on a side of bearing unit 12 and the backstop energy introduce element 32, one of 72 and be arranged on the side of bearing unit 12.The backstop energy is introduced element 32,72 and is driven in the motion of damping element 24.The element 30 of taking of housing unit 20 acts on the backstop energy introducing element 74 when the direction of bearing unit 12 is moved at housing unit 20 at this, and this backstop energy is introduced element and is arranged on a side of bearing unit 12.In addition, damping element 22 has a stopping element 76, and it is arranged for restriction damping element 24 and is deviating from motion on the direction of bearing unit 12 in when motion.Stopping element 76 is constructed to locating snap ring at this, and it is arranged in the groove 78 of director element 26, and damping element 24 supports thereon movingly.

When housing unit 20 after pinching screw 48 gets loose because the spring element 16 of

pilot unit

14,18 spring force and when deviating from the direction motion of bearing unit 12, damping element 24 and backstop energy introduce element 32,74 by guiding area 68, one of 70 equally towards the direction motion that deviates from bearing unit 12, until the backstop energy that is arranged on the side that deviates from bearing unit 12 is introduced element 74 backstops on stopping element 76.Because the impact energy of the kinergety of housing unit 20 and because

spring element

16,18 the spring force in the direction effect that deviates from bearing unit 12, damping element 24 compressed and this housing unit 20 of damping when housing unit 20 rebounds.

Claims

Hand tool, mill machine on especially, comprising: at least one is used for being bearing in the bearing unit (12) on the workpiece; At least one pilot unit (14), described pilot unit have at least one spring element (16,18); With at least one housing unit (20), described housing unit is supported with respect to bearing unit (12) movingly by pilot unit (14),

It is characterized in that, be provided with at least one damping unit (22), described damping unit has at least one damping element (24), described damping element is arranged for the described housing unit of damping (20) motion towards the direction that deviates from bearing unit (12) owing to the spring force of described at least one spring element (16,18) of described pilot unit (14).
2. according to claim 1 hand tool is characterized in that described pilot unit (14) has at least one director element (26,28), and described damping element (24) is arranged on the described director element.
3. according to claim 2 hand tool is characterized in that described damping element (24) is arranged on the excircle of described director element (26,28).
4. at least according to claim 2 hand tool is characterized in that described damping element (24) is supported movingly with respect to described director element (26,28).
5. according to claim 4 hand tool, it is characterized in that, described housing unit (20) has at least one and takes element (30), described taking when element is arranged at housing unit (20) against the spring force of spring element (16,18) towards the direction motion of bearing unit (12) makes described damping element (24) towards the direction motion of bearing unit (12).
6. according to the hand tool of one of above claim, it is characterized in that, described damping unit (22) has at least one backstop energy and introduces element (32,74), described backstop energy introducing element is arranged for the backstop energy is incorporated in the described damping element (24) in large area.
7. according to the hand tool of one of above claim, it is characterized in that described damping element (24) is made of elastomer.