CN108472790A - Grinding attachment and grinding tool for the grinding attachment - Google Patents

Grinding attachment and grinding tool for the grinding attachment Download PDF

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Publication number
CN108472790A
CN108472790A CN201680075719.9A CN201680075719A CN108472790A CN 108472790 A CN108472790 A CN 108472790A CN 201680075719 A CN201680075719 A CN 201680075719A CN 108472790 A CN108472790 A CN 108472790A
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CN
China
Prior art keywords
grinding
support portion
attached
rotation axis
face gear
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.)
Pending
Application number
CN201680075719.9A
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Chinese (zh)
Inventor
山内宪司
北谷龙雄
泷田大辅
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New Ltd By Share Ltd
New Registon Co Ltd
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New Ltd By Share Ltd
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Filing date
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Publication of CN108472790A publication Critical patent/CN108472790A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A kind of grinding attachment is provided, can prevent the surface of grinding part by uniform wear to prevent the drastically decline and grinding burn of grinding capacity using it.The grinding attachment (1) includes：Support portion is attached to the rotation axis (12) driven by rotation driving portion (11) can be rotated together with the rotation axis；With grinding part (30), it is stacked on the support portion (20) and with the grinding skin (31) of the out-of-flatness formed by multiple abrasive grains.Have when in use with the convex surface part of the rear-face contact of grinding part (30) (21) and from the recessed concave part (22) of convex surface part (21) in the surface of support portion (20), convex surface part (21) and concave part (22) are alternately arranged in circumferential direction.Engaging mechanism (50) is engaged at each predetermined angle position, to be maintained at grinding part (30) or the support portion (20) that week has moved up predetermined angular, and between support portion (20) and grinding part (30), either between rotation axis (12) and grinding part (30) or between rotation axis (12) and support portion (20).

Description

Grinding attachment and grinding tool for the grinding attachment
Technical field
The present invention relates to for being ground object grinding attachment and the grinding tool that is used together with grinding attachment.
Background technology
Grinding attachment, such as the disc grinder with the grinding part made of grinding stone or coated abrasives product, it is extensive Ground is for being ground or polishing the workpiece made of ordinary steel, stainless steel, aluminium, plastics etc. (see, for example, patent document 1).It is such Grinding attachment 100 usually configures as shown in figure 26.More specifically, with the out-of-flatness grinding skin formed by multiple abrasive grains 131 grinding part 130 is fixed on tabular supporting member 120, and supporting member 120 and grinding part 130 are whole by rotation axis branch Support.When rotation axis, which is rotated driving portion 111, to be driven, supporting member 120 and grinding part 130 are rotated by rotation axis so that The recess portion of the grinding skin 131 of grinding part 130 and protrusion grinding or polishing workpiece.
Reference document list
Patent document
Patent document 1:Japanese Unexamined Patent Application discloses 2015-42424.
Invention content
Technical problem
However, in the grinding attachment 100 of aforementioned conventional, grinding or polishing load are customarily applied on the same area, because Abrasive grain 132 in this region is uniformly worn (referring to Figure 27).More specifically, although it is new shown in Figure 27 (a) In the state of being not used, the surface 131 of grinding part 130 due to abrasive grain 132 presence and out-of-flatness, but utilizing grinding part 130 grinding or polishing workpiece W when, as shown in Figure 27 (b), abrasive grain 132 becomes light by uniform wear, the surface 131 of grinding part 130 It is sliding.It is this referred to as " be passivated " in the case of, no matter whether abrasive grain 132 remains, and all can cause the cutting edge rounding of abrasive grain 132 simultaneously And cutting ability drastically declines.Above-mentioned phenomenon leads to the increase of grinding resistance and grinding heat, this usually causes grinding burn.
The present invention is to propose to solve the above-mentioned problems, its purpose is to provide a kind of grinding attachment and is used for the mill The grinding tool of turning device, which prevents the surface of grinding part by uniform wear, to prevent grinding capacity drastically Decline and grinding burn.
The technical solution solved the problems, such as
Include according to the grinding attachment of the invention for solving the above problem：Support portion is attached to and is driven by rotation driving portion Support portion of the dynamic rotation axis can be rotated together with rotation axis；And grinding part, be stacked on support portion and with by The grinding skin for the out-of-flatness that multiple abrasive grains are formed.In the surface of support portion have when in use with the rear-face contact of grinding part Convex surface part and from the recessed concave part of convex surface part, convex surface part and concave part are alternately arranged in circumferential direction.Engaging mechanism is every It is engaged at a predetermined angle position, to be maintained at grinding part or the support portion that week has moved up predetermined angular, engaging mechanism Between support portion and grinding part either between rotation axis and grinding part or between rotation axis and support portion.
In grinding attachment according to the present invention, there is the convex surface part being circumferentially alternately arranged in the surface of support portion And concave part, wherein only convex surface part is contacted with grinding part.Therefore, when grinding part is ground workpiece, pressure of the grinding part to workpiece It is focusing only on the region that convex surface part is contacted with grinding part, therefore grinding part is ground work in the region that convex surface part is contacted with grinding part Part；But in the region opposite with concave part of grinding part, grinding part is contacted with workpiece, but only slided on the surface of workpiece and It is not ground workpiece really.Therefore, in the region that convex surface part is contacted with grinding part, abrasive grain is uniformly worn, initial to make The grinding skin of out-of-flatness smooths.But grinding part can change relative to the relative position of support portion (i.e. convex surface part).Cause This, can make the uneven main plot advantageous to grinding workpiece of grinding skin by changing the position that grinding part is contacted with convex surface part Domain is contacted with convex surface part, so that the grinding capacity of grinding part can restore.In the process, at each predetermined angle position Change the relative position between grinding part and support portion (i.e. convex surface part), it can be ensured that the out-of-flatness region of grinding skin and convex surface Portion contacts.Begun to decline in grinding capacity and change position of the grinding part relative to convex surface part, it is suppressed that grinding capacity drastically under Drop increases to prevent from rubbing caused by due to grinding capacity declining, to prevent grinding burn.
Here, term " grinding " includes not only the scraping surface being generally understood, and further includes having surface polishing meaning " polishing " concept, therefore broadly refer to as-machined workpiece surface so that surface is smooth.
In grinding attachment according to a preferred embodiment, engaging mechanism may include being arranged in support portion and grinding part In one at least one joint protrusion；And it is arranged in another in support portion and grinding part with corresponding Angle Position Multiple engaging holes, so as to engaged with joint protrusion or from joint protrusion be detached from.
In the grinding attachment according to another preferred embodiment, engaging mechanism may include：Ratchet, composition are attached to institute It states the internal gear of the inner peripheral surface of grinding part or the support portion and there is pre- constant pitch in the circumferential；And at least one spine Pawl is attached to the rotation axis to be engaged with the ratchet.
Can also include shift mechanism according to the grinding attachment of another preferred embodiment, in response to the engagement of engaging mechanism Action makes grinding part or the circumferentially moved predetermined angular of support portion.
The setting of above-mentioned shift mechanism allows grinding part that can be automatically moved relative to support portion, without grinding attachment User it is intended that grinding part relative to support portion move.Therefore, user can continue to use grinding attachment for a long time, and Without the decline for worrying grinding capacity.
In the grinding attachment according to a more preferred embodiment, shift mechanism may include being arranged in grinding part and support The guiding elements on one in portion；And displacement member, can in the axial direction be moved along guiding elements but cannot be The mode moved up in week is attached on the periphery of guiding elements.Engaging mechanism may include in a manner of radially outstanding At least one engaging pin and the engaging groove being arranged on the peripheral surface of displacement member, are formed in grinding part and support portion Another entire inner peripheral surface on and include stage portion, each stage portion is formed with predetermined angle position.
In the grinding attachment according to another more preferred embodiment, engaging mechanism may include the first face gear, attachment There is to one in support portion and grinding part and circumferentially pre- constant pitch and the second face gear, be attached to support portion With in grinding part another and circumferentially have and allow the tooth pitch that is engaged with the first face gear of the second face gear.Shift mechanism May include third face gear, third face gear by can be axially moveable but cannot it is circumferentially moved in a manner of be attached to second There is on the periphery of face gear and circumferentially the tooth pitch for allowing third face gear to be engaged with the first face, and third face gear has There is the tooth being staggered in the circumferential with the second face gear.
Grinding tool according to the present invention is the grinding tool for being attached to basic component when in use, wherein the basis structure Part is attached to the rotation axis driven by rotation driving portion so as to be rotated together with rotation axis, and on the surface of basic component It is upper that there is joint protrusion.Grinding tool includes：Convex concave component, be attached to fundamental mechanism and being configured to be formed convex surface part and The concave part recessed from convex surface part, convex surface part and concave part are alternately arranged in circumferential direction；And grinding part, it is stacked in convex concave On component and with the grinding skin of the out-of-flatness formed by multiple abrasive grains.Convex concave component, which has, to be engaged with joint protrusion Attachment hole is convex concave component to be attached on basic component, and grinding part has multiple engaging holes, each engaging hole difference It is arranged with predetermined angle position can engage with joint protrusion or be detached from from joint protrusion.
Another grinding tool according to the present invention is the grinding tool for being attached to support portion when in use, wherein the support Portion is attached to the rotation axis driven by rotation driving portion so as to be rotated together with rotation axis, and in the surface of support portion With convex surface part and from the recessed concave part of convex surface part, convex surface part and concave part are alternately arranged in circumferential direction.Grinding tool packet It includes：Grinding part is stacked on support portion and with the grinding skin of the out-of-flatness formed by multiple abrasive grains, and guiding structure Part is attached to the back side of grinding part.It will by the way that guiding elements to be inserted into the inner circumferential for the displacement member being arranged on support portion Grinding part is attached to support portion, makes the grinding part with the joint action in response to the shift mechanism for including in the support portion Relative to the circumferentially moved predetermined angular of the support portion.
Beneficial effects of the present invention
Grinding attachment according to the present invention and grinding tool for grinding attachment prevent the surface of grinding part from uniformly being ground Damage, to prevent the drastically decline and grinding burn of grinding capacity.
Description of the drawings
Fig. 1 is the stereogram for the grinding attachment for showing first embodiment according to the present invention.
Fig. 2 is the exploded perspective view of grinding attachment shown in Fig. 1.
Fig. 3 is the plan view of the grinding part of grinding attachment shown in Fig. 1.
Fig. 4 (a) and 4 (b) are the grinding part of grinding attachment shown in FIG. 1 and the front view of support portion, are respectively illustrated convex The first and second position relationships between face and grinding part.
Fig. 5 is the exploded perspective view of the first modification of the grinding attachment for showing first embodiment according to the present invention.
Fig. 6 is a kind of plan view for the modification for showing the support portion of grinding attachment shown in Fig. 1 and Fig. 5.
Fig. 7 is the exploded perspective view of the second modification of the grinding attachment for showing first embodiment according to the present invention.
Fig. 8 is a kind of plan view of the modification for the support portion for showing grinding attachment shown in Fig. 7.
Fig. 9 is the plan view of another modification for the support portion for showing grinding attachment shown in Fig. 7.
Figure 10 is the stereogram of the third modification for the grinding attachment for showing first embodiment according to the present invention.
Figure 11 is the exploded perspective view for showing grinding attachment according to the second embodiment of the present invention.
Figure 12 is the stereogram of the assembled state of grinding attachment shown in Figure 11.
Figure 13 is the cross-section diagram that the line A-A in Figure 12 is intercepted.
Figure 14 is the exploded perspective view for showing grinding attachment according to the third embodiment of the invention.
Figure 15 is from the exploded perspective view for rotating drive side is checked grinding attachment shown in Figure 14.
Figure 16 is the skiagraph of grinding attachment shown in Figure 14.
Figure 17 is the stereogram for the support portion for showing grinding attachment shown in Figure 14.
Figure 18 is the skiagraph of support portion shown in Figure 17, wherein inner cylinder portion is omitted.
Figure 19 is the exploded perspective view for showing grinding attachment according to the fourth embodiment of the invention.
Figure 20 is from the exploded perspective view for rotating drive side is checked grinding attachment shown in Figure 19.
Figure 21 is the skiagraph of grinding attachment shown in Figure 19.
Figure 22 shows showing for operation of the first face gear for grinding attachment shown in explanation figure 19 to third face gear It is intended to.
Figure 23 shows showing for operation of the first face gear for grinding attachment shown in explanation figure 19 to third face gear It is intended to.
Figure 24 is a kind of front view of modification of the convex surface part and concave part that show grinding attachment according to the present invention.
Figure 25 is the front view of another modification of the convex surface part and concave part that show grinding attachment according to the present invention.
Figure 26 is the stereogram of traditional grinding attachment.
Figure 27 (a) and Figure 27 (b) are to show at the grinding part of grinding attachment shown in Figure 26 and the part in the region of surrounding Amplify schematic front view；Figure 27 (a) shows the unused state of grinding part；Figure 27 (b) shows its use state.
Specific implementation mode
The embodiment of the present invention is described below with reference to attached drawing.Grinding attachment 1 according to the embodiment is for being ground by general The device of workpiece W (with reference to Fig. 4) made of logical steel, stainless steel, aluminium, plastics etc..Although the following describe user's manual operations The free grinding disc of disc grinder etc., but it is suitable for can when workpiece W is arranged thereon the automatic grinding work The grinding machine of part.In the following description, on the basis of the rotation axis 12 of grinding attachment 1, axial direction, circumferential direction, radial direction are defined.In addition, mill Turning device 1 is defined as front with the surfaces contacted workpiece W, and a surface is defined as the back side in contrast to this.
First, the grinding attachment 1 of first embodiment according to the present invention is described referring to figs. 1 to Fig. 3.Such as Fig. 1 and Fig. 2 institutes Show, grinding attachment 1 includes support portion 20, is attached to the rotation axis 12 that is driven by rotation driving portion 11 with can be with rotation axis 12 1 Play rotation；It is stacked in the grinding part 30 on support portion 20；And grinding part 30 is fixed to the fixed part 40 of support portion 20.Rotation Driving portion 11 includes built-in source of rotational drive, such as motor, is rotated by the electric power supplied by power cord 15 so that Rotate rotation axis 12 when starting source of rotational drive.Here it is possible to using hydraulic electric motor or use the pneumatic motor of compressed air As source of rotational drive, for example, rotation driving portion 11 can be made of the pneumatic tool for moving motor with built in air.In addition, Known any rotation driving portion 11 can be used, as long as the driving portion can drive rotation axis 12.
Support portion 20 includes two components, that is, convex concave component 23 and convex concave component 23 is fixed on its surface Basic component 24.On the surface of support portion 20 convex surface part 21 is circumferentially alternatively formed since there are convex concave components 23 (its when in use the rear-face contact with grinding part 30) and from the recessed concave part 22 of convex surface part 21.
Basic component 24 is in the form of annular discs, and 30 diameter having the same of grinding part, and is formed for rotation axis 12 in center The through-hole 24a being inserted through.At the position near through-hole 24a, it is flat from the surface of basic component 24 that there are two joint protrusions 51 Row is in the axially projecting of rotation axis 12.Here, term " discoid " includes not only unnotched tablet, is also included in side view The peripheral part of plate is flat and central portion is with the recessed shape of cup-shaped.
Convex concave component 23 include the diameter central portion 25 smaller than the outer diameter of basic component 24 and from central portion 25 radially The multiple peripheral parts 26 extended, and central portion 25 and peripheral part 26 are integrally formed.Peripheral part 26 extends respectively to and basic structure The corresponding position of outer edge of part 24.Central portion 25 has the through-hole 25a being inserted through for rotation axis 12.In addition, in peripheral part In 26, when convex concave component 23 is attached to basic component 24 at 51 location of joint protrusion, form for joint protrusion 51 are inserted through so that convex concave component 23 to be attached to the attachment hole 26a of basic component 24.Attachment hole 26a, which is respectively provided with, to be allowed to connect Close the size that protrusion 51 penetrates through.In convex concave component 23, peripheral part 26 forms convex surface part 21, between adjacent convex surface part 21 Part forms concave part 22, and wherein convex surface part 21 and concave part 22 is integrally formed, and convex surface part 21 and recessed from convex surface part 21 Concave part 22 position circumferentially alternatingly.Since peripheral part 26 radially extends, convex concave component 23 is formed so that Convex surface part 21 and concave part 22 also form radial pattern.
Convex concave component 23 and basic component 24 it is expected that material is formed by such as metal, resin and rubber etc..It is convex with being formed Similarly, the material for being best suited for grinding part 30 and workpiece W can be suitably used in the material of female member 23 and basic component 24 The material of material.Convex concave component 23 and basic component 24 must be not necessarily formed from the same material.For 23 He of convex concave component Basic component 24 allows to use or handle different types of grinding part 30 and workpiece W using different materials, so as to improve grinding The versatility of device 1.In addition, when for convex concave component 23 and basic component 24 using different materials, can individually select The material of the material and basic component 24 of convex concave component 23 is selected, to which support portion there can be flexibility, this depends on convex-concave The combination of shape component 23 and basic component 24.
Grinding part 30 is in the form of annular discs, and with the grinding skin 31 of the out-of-flatness formed by multiple abrasive grains.For example, can be with The flexible grinding such as fabric is ground using the coated abrasives such as known grinding stone, polydisc and sanding disc product or non-woven fabrics Material is as grinding part 30.Here, term " discoid " includes not only unnotched tablet, is also included within the week of plate in side view Edge is flat and central portion is with the recessed shape of cup-shaped.
Grinding part 30, which has, is formed in the through-hole 30a that its center is inserted through for rotation axis 12；And two engaging holes 52, the two engaging holes 52 are formed in that around through-hole 30a, re-spective engagement is prominent when grinding part 30 is stacked on support portion 20 It rises at the location of 51.Each engaging hole 52 is circumferentially so that joint protrusion 51 can wherein with engaging hole 52 Range corresponding to length in move.Correspondingly, grinding part 30 is configured to prominent in engagement circumferentially around rotary shaft 12 Rise 51 engage with engaging hole 52 in the range of shift, with change and support portion 20 relative position.
As shown in figure 3, at least one of engaging hole 52 is formed as the shape of three sections of camber line 52a of periphery connection.In this way Configuration allow joint protrusion 51 be positioned as being assembled on every section of camber line 52a, consequently facilitating adjust grinding part 30 relative to rotation The angle that shaft 12 shifts.The quantity of camber line 52a could be provided as no less than 2 desired value.Camber line 52a can be formed in inner circumferential On side, rather than on peripheral side.Alternatively, camber line 52a can be omitted, such as in joint protrusion 51 relative to engaging hole 52 Both ends positioning in the case of.Joint protrusion 51 and engaging hole 52 constitute engaging mechanism 50, and the engaging mechanism 50 is each predetermined Angular position is engaged, to be maintained at the grinding part 30 that week has moved up predetermined angular.In addition, grinding part 30 and convex concave Component 23 constitutes the grinding tool 2 for being attached to basic component 24 when in use, and basic component 24 is attached to by rotation driving portion 11 The rotation axis 12 of driving is formed with joint protrusion 51 on the surface thereof can be rotated together with rotation axis 12.
Fixed part 40 is integrated including the diameter flange part 41 bigger than the diameter of the through-hole 30a of grinding part 30 and with flange part 41 The leg 42 of formation.In the through-hole 24a of the through-hole 30a of grinding part 30, the through-hole 25a of convex concave component 23 and basic component 24 Interior, leg 42 is releasably coupled with rotation axis 12.By the engagement of leg 42 and rotation axis 12, grinding part 30 and by convex concave The support portion 20 that component 23 and basic component 24 are constituted is attached to rotation axis 12, can rotate therewith.In addition, flange part 41 push grinding part 30 so that grinding part 30 is fixed on support portion 20, i.e., on convex concave component 23.Here, by that will rotate Axis 12 is inserted into through-hole 24a so that rotation axis 12 is closely fit with wherein, and support portion 20 can integrally be attached to rotation axis 12. Alternatively, negative thread can be formed in through-hole 24a, male thread can be formed in rotation axis 12 so that support portion 20 can It is integrally attached to rotation axis 12 to be engaged by the screw thread between negative thread and male thread.
In the present embodiment, as described above, being circumferentially alternatingly arranged with by convex concave component on the surface of support portion 20 23 convex surface parts 21 formed and concave part 22, wherein only convex surface part 21 is contacted with grinding part 30.Therefore, when grinding part 30 is ground When workpiece W, grinding part 30 is focusing only on the pressure of workpiece W the region (arrow in Fig. 4 that convex surface part 21 is contacted with grinding part 30 F is indicated), therefore grinding part 30 is ground workpiece W in the region that convex surface part 21 is contacted with grinding part 30.On the other hand, it is being ground In the region opposite with concave part 22 of portion 30, grinding part 30 is contacted with workpiece W, but is slided without true only on the surface of workpiece W Positive grinding workpiece W.Therefore, in the region that convex surface part 21 is contacted with grinding part 30, abrasive grain is uniformly worn, initial to make The grinding skin 31 of out-of-flatness smooths.
But although grinding skin 31 has the first position relationship as shown in Fig. 4 (a) in convex surface part 21 and grinding part 30 When being smoothed, but grinding part 30 may surround rotation axis 12 circumferentially in the formation range internal shift of engaging hole 52.Therefore, By unclamping or dismantle fixed part 40, change relative position and again of the grinding part 30 relative to convex surface part 21 (i.e. support portion 20) Secondary to fix grinding part 30 by fixed part 40, convex surface part 21 and grinding part 30 can be set as the second position as shown in Fig. 4 (b) Relationship.In the region that convex surface part 21 is contacted with grinding part 30, in the second position relationship for helping to be ground workpiece W, abrasive grain It not yet wears, 31 out-of-flatness of grinding skin, therefore the grinding capacity of grinding part 30 can restore.
In addition, when convex surface part 21 and grinding part 30 are between first position relationship and second position relationship, abrasive grain with Different modes are worn.In addition, attempting the position relationship between convex surface part 21 and grinding part 30 resetting to first position relationship In the case of, can not possibly position relationship accurately be reset to first position relationship, and position in a strict sense in practice Relationship is necessarily deviated.Therefore, in the second position relationship between convex surface part 21 and grinding part 30, grinding capacity is When decline, by by convex surface part 21 and grinding part 20 reset to first position relationship make on grinding skin 31 formed protrusion and Recess portion, and can continue to be ground using the protrusion and recess portion.Just change grinding part 30 whenever grinding capacity is begun to decline Relative to the position of convex surface part 21, which suppress the drastically declines of grinding capacity, to prevent leading since grinding capacity declines The friction of cause increases, to prevent grinding burn.
In addition, in the present embodiment, support portion 20 has joint protrusion 51, and grinding part 30 has circumferentially Engaging hole 52.Such configuration allows grinding part 30 within the scope of the formation of engaging hole 52, will be relative to the opposite of support portion 20 Position change is each predetermined angle position so that grinding part 30,31 out-of-flatness of grinding skin region can be with convex surface part 21 Reliably contact.Further, since convex surface part 21 and concave part 22 are formed as radial pattern on the surface of support portion 20, therefore, Convex surface part 21 and concave part 22 can have increased area so that and prevent convex surface part 21 from the damaged surfaces of support portion 20, from And enhance the safety of grinding attachment 1.
First embodiment can be amended as follows.Fig. 5 shows the first modification of the first embodiment of the present invention.Such as Fig. 5 Shown, each engaging hole 52 of grinding part 30 can be formed as round, have allow joint protrusion 51 engaged with engaging hole 52 or The size that person is detached from, and can respectively at predetermined angle position in the circumferential, engaging hole 52 can be with re-spective engagement protrusion At the radial position of 51 engagements, multiple (being in this variant 6) engaging holes 52 are formed.In addition, convex concave component 23 can wrap The multiple peripheral parts 26 for including the flat part 27 on 25 back side of centrally disposed portion and being radially extended from central portion 25.In the modification In, grinding part 30 and convex concave component 23 constitute the grinding tool 2 for being attached to basic component 24 when in use, and basic component 24 is attached The rotation axis 12 driven by rotation driving portion 11 is connected to can together be moved with rotation axis 12, and has connect on the surface thereof Close protrusion 51.
The form of convex concave component 23 (that is, convex surface part 21 and concave part 22) is not limited to Fig. 2 and convex surface part shown in fig. 5 21 The form being radially linearly formed with concave part 22, but can be as illustrated in fig. 6, peripheral part 26 is from 25 windmill of central portion Ground curve extends, and in this case, the peripheral part 26 of convex concave component 23 can form convex surface part 21, and Adjacent circumferential portion 26 Between part can form concave part 22.
Although in addition, in the first embodiment, support portion 20 is by the convex concave component 23 and basic component 24 that are individually formed It constitutes, but support portion 20 can be formed as one including convex surface part 21 and concave part 22, this is implemented as shown in Fig. 7 first Second modification of example.More specifically, support portion 20 can be by circumferentially fixing multiple convex concave components 23 at a predetermined interval It is formed in the surface of basic component 24.In this case, the surface of each convex concave component 23 constitutes convex surface part 21, base The surface that convex concave component 23 is not arranged of plinth component 24 constitutes concave part 22.In general, the only grinding skin 31 of grinding part 30 Presumptive area A (see Fig. 3) in peripheral part is for carrying out grinding action, and therefore, in this embodiment, convex concave component 23 is arranged When grinding part 30 is stacked on support portion 20 on position corresponding with region A.Here, as shown in Figure 2 and Figure 6, convex Female member 23 may be arranged to radial pattern, and in this case, support portion 20 is formed so that convex surface part 21 and concave part 22 are formed as radial pattern.Alternatively, branch can be formed by the way that convex concave component 23 and basic component 24 to be integrally formed Support part 20.
Support portion 20 is formed as one including convex surface part 21 and concave part 22, convex surface part 21 and 22 conduct of concave part are allowed A part for support portion 20 obtains flexible.Thus, for example when grinding attachment 1 is used to be ground the part of bending, support portion 20 has There is the shape for being suitable for the bending part, it being capable of faster and more neatly workpieces processing W.
The form of convex surface part 21 and concave part 22 is not limited to convex surface part 21 as shown in Figure 7 and concave part 22 circumferentially with pre- Fixed spaced apart form A.For example, convex concave component 23 shown in Fig. 7 can be with round, ellipse or any other expectation shape Shape (as shown in Fig. 8 or Fig. 9) is formed in region a so that the surface of each convex concave component 23 constitutes convex surface part 21, basic structure The surface that convex concave component 23 is not arranged of part 24 constitutes concave part 22.
Although in the first embodiment, rotation axis 12 is given to be provided with such as fixed part 40, as first embodiment Third modification (shown in Figure 10) can not give rotation axis 12 that fixed part is arranged, and the setting of each joint protrusion 51 can be given solid Determine portion 40.Correspondingly, the joint protrusion 51 engaged with engaging hole 52 can be moved along engaging hole 52 in the circumferential, by grinding part 30 are arranged in place relative to support portion 20, and if grinding part 30 is moved relative to the relative position of bearing unit 20, grinding Portion 30 can be fixed to support portion 20 by means of fixed part 40.Therefore, the structure of grinding attachment 1 can be simplified.
Although in the first embodiment, fixed part 40 includes flange part 41 and leg 42, the configuration of fixed part 40 is not It is limited to above-mentioned configuration.For example, loop fasteners can be attached to the back side (surface opposite with grinding skin 31) of grinding part 30 On, it can also be attached in convex surface part 21, to constitute fixed part 40.Alternatively, may be used can be by grinding part 30 The back side and convex surface part 21 are adhered to the adhesive for allowing to be separated from each other degree as fixed part 40.
Although in addition, in first embodiment and its modification, support portion 20 has joint protrusion 51 and grinding part 30 has There is engaging hole 52, but engaging hole 52 can be arranged in support portion 20, and joint protrusion 51 can be arranged in grinding part 30. Although in first embodiment and its modification, provided with two joint protrusions 51 and be also provided with it is right with re-spective engagement protrusion 51 Two engaging holes 52 answered, but the quantity of joint protrusion 51 is not limited to two, can be one or three or more, only Want grinding part 30 that can be moved relative to support portion 20.In this case, engaging hole 52 is set as opposite with joint protrusion 51 It answers.
Next, 1 arriving the grinding attachment 1 of Figure 13 descriptions according to the second embodiment of the present invention referring to Fig.1.Such as Figure 11 institutes Show, grinding attachment 1 includes：Support portion 20 is attached to the rotation axis 12 that is driven by rotation driving portion 11 with can be with rotation axis 12 rotate together；It is stacked in the grinding part 30 on support portion 20；With the fixed part 40 that grinding part 30 is fixed to support portion 20.Turn Dynamic driving portion 11 has the configuration being identical with the first embodiment, and therefore, identical component is denoted by the same reference numerals, and And detailed description is omitted.
Support portion 20 includes basic component 24 and the convex concave component 23 being integrally formed on basic component 24.Basic component 24 is rounded in the plan view, has diameter identical with the diameter of grinding part 30, and be formed so that in side view, outside Circumference is flat and central portion is recessed with cup-shaped.At the center (the most deep position of cup-like portion) of basic component 24, formed The through-hole 24a that is inserted through for rotation axis 12.
Convex concave component 23 has rectangular shape, is approximately equal to the length to the diameter of the flat peripheral part of basic component 24 To length.Multiple this convex concave components 23 are circumferentially integrally formed in the flat peripheral part of basic component 24 at a predetermined interval On.Since there are convex concave components 23, on the surface of support portion 20, be circumferentially alternatively formed convex surface part 21 (its When use with the rear-face contact of grinding part 30) and from the recessed concave part 22 of convex surface part 21.
Support portion 20 it is expected that material is formed by such as metal, resin and rubber etc..As the material for forming support portion 20, The material for being best suited for grinding part 30 and workpiece W can be properly selected.
Grinding part 30 is rounded in the plan view, and is formed so that in side view, peripheral part be flat and in Centre portion is recessed with cup-shaped.Grinding part 30 includes on peripheral part surface flat in side view, is formed by multiple abrasive grains Out-of-flatness grinding skin 31.It is, for example, possible to use the coated abrasives such as known grinding stone, polydisc and sanding disc product or Person's non-woven fabrics grinds the flexible removing material such as fabric as grinding part 30.
As shown in Figure 11 to Figure 13, the centre in grinding part 30 is formed with through-hole 30a, and ratchet 61 is attached to through-hole The inner circumferential of 30a.Ratchet 61 is formed as the internal gear with pre- constant pitch in the circumferential, and includes two extended radially outward A flange part 61a.Although details is not shown in Figure 11 to Figure 13, one in two flange part 61a and ratchet 61 Integrally formed, another is formed independently of ratchet.By the part around the through-hole 30a by grinding part 30 be maintained at two it is convex It is fastened to one between the 61a of edge and by (not shown) such as screw, clips by the above-mentioned part of flange part 61a and grinding part 30 It rises, ratchet 61 is attached to grinding part 30.In addition, the point relative to ratchet 61 is arranged in 20 side of support portion of ratchet 61 Inwardly projecting bottom 61b.
Fixed part 40 includes：Flange part 41, size have allow flange part 41 be fitted in ratchet 61, size；With And the leg 42 being integrally formed with flange part 41.It is formed with negative thread (not shown) on the inner peripheral surface of leg 42, and passes through Negative thread is threadedly engaged with the male thread (not shown) being formed on the peripheral surface of rotation axis 12, fixed part 40 is fixed to Rotation axis 12.When leg 42 is engaged with rotation axis 12, flange part 41 pushes the bottom 61b of ratchet 61 so that grinding part 30 is solid Surely support portion 20 is arrived.At this moment, grinding part 30, which is fixed to the degree on support portion 20, allows grinding part 30 circumferentially moved.In addition, It is formed with male thread (not shown) on the peripheral surface of leg 42, and by by the male thread and shape on the peripheral surface of leg 42 Be threadedly engaged at the negative thread (not shown) on the inner peripheral surface of the through-hole 24a of basic component 24, by basic component 24 (that is, Support portion 20) fixed part 40 (that is, rotation axis 12) is attached to can rotate therewith.
Concave part 43 there are four being formed in the peripheral surface 41a of the flange part 41 of fixed part 40, and pawl 62 is utilized and is inserted Enter spring 63 therein to be attached in each concave part 43.In other words, pawl 62 is attached to and fixed part 40 by fixed part 40 The rotation axis 12 being threadedly engaged.The point of ratchet pawl 62 is formed to engage with the tooth pitch of ratchet 61.Ratchet 61 and pawl 62 are formed in the engaging mechanism engaged at each predetermined angle position.Since engaging mechanism 60 is ratchet mechanism, pass through It the grinding part 30 that engaging mechanism 60 is engaged with fixed part 40 (that is, rotation axis 12) being capable of (side of arrow B in Figure 12 in one direction To) on rotate.By making grinding part 30 rotate angle corresponding with a pitch of ratchet 61, can be incited somebody to action by engaging mechanism 60 Grinding part 30 is maintained at the state that grinding part 30 has moved predetermined angular in the circumferential.Here, the quantity of pawl 62 is unlimited In four, but can be not less than 1 any amount.
In the present embodiment, grinding part 30 and the composition of fixed part 40 with engaging mechanism 60 are attached to support when in use The grinding tool 3 in portion 20, the support portion 20 are attached to the rotation axis 12 that is driven by rotation driving portion 11 with can be with rotation axis 12 rotate together, and have the convex surface part 21 that is circumferentially alternately arranged in its surface and from the recessed concave surface of convex surface part 21 Portion 22.
Equally, in the present embodiment, as described above, being circumferentially alternatingly arranged with by convex concave on the surface of support portion 20 The convex surface part 21 and concave part 22 that component 23 is formed, wherein only convex surface part 21 is contacted with grinding part 30.By making 30 edge of grinding part The direction of arrow B in Figure 12 rotates, and grinding part 30 can change relative to the relative position of support portion 20 with engaging mechanism 60, Allow to change the region that convex surface part 21 is contacted with grinding part 30.Correspondingly, similar with first embodiment, whenever grinding capacity It begins to decline and just changes position of the grinding part 30 relative to convex surface part 21, which suppress the drastically declines of grinding capacity, to anti- It rubs and increases caused by only declining due to grinding capacity, to prevent grinding burn.
In addition, in this embodiment, grinding part 30 can be changed into each predetermined relative to the relative position of support portion 20 Angle Position so that grinding part 30,31 out-of-flatness of grinding skin region can reliably be contacted with convex surface part 21, such as first In embodiment like that.
Second embodiment can be amended as follows.Although in a second embodiment, ratchet 61 be attached to grinding part 30 and Pawl 62 is attached to rotation axis 12 by fixed part 40, still, for example, ratchet 61 can be attached to support portion 20, and pawl 62 can be directly attached to rotation axis 12.In this case, engaging mechanism 60 is arranged between support portion 20 and rotation axis 12, And support portion 20 can be moved relative to grinding part 30.
Next, 4 arriving the grinding attachment 1 of Figure 18 descriptions according to the third embodiment of the invention referring to Fig.1.Such as Figure 14 and figure Shown in 15, grinding attachment 1 includes：Support portion is attached to the rotation axis 12 that is driven by rotation driving portion 11 with can be with rotation Axis 12 rotates together；It is stacked in the grinding part 30 on support portion 20；And grinding part 30 is fixed to the fixed part of support portion 20 40.Rotation driving portion 11 has the configuration being identical with the first embodiment, and therefore, identical component is with identical reference numeral come table Show, and omits detailed description.
Grinding part 30 is rounded in the plan view, and is formed so that in side view, peripheral part be flat and in Centre portion is slightly concave.Grinding part 30 have be located at it is on flat peripheral part surface in side view, formed by multiple abrasive grains The grinding skin 31 of out-of-flatness.It is, for example, possible to use the coated abrasives such as known grinding stone, polydisc and sanding disc product or Non-woven fabrics grinds the flexible removing material such as fabric as grinding part 30.
Centre in grinding part 30 is formed with the through-hole 30a being inserted through for rotation axis 12.Position around through-hole 30a Place is set, guiding elements 76 is attached to the back side of grinding part 30.Guiding elements 76 is cylinder, on the peripheral surface of guiding elements 76 Circumferentially alternating arrangement is formed with the convex surface part 76a axially extended and concave part 76b.Guiding elements 76 passes through adhesive, folder Son, screw etc. are attached to grinding part 30.Grinding part 30 and guiding elements 76 constitute the grinding for being attached to support portion 20 when in use Tool 4, the support portion 20 are attached to the rotation axis 12 driven by rotation driving portion 11, can together turn with rotation axis 12 It is dynamic, and there is the convex surface part 21 being circumferentially alternately arranged in its surface and from the recessed concave part 22 of convex surface part 21.
As shown in Figure 14 to Figure 16, displacement member 77 still cannot be circumferentially can be moved axially along guiding elements 76 Mobile mode is attached to the periphery of guiding elements 76.More specifically, displacement member 77 has convex surface part 77a in inner circumferential surface With with concave part 77b, respectively be formed in concave part 76b and convex surface part 76a in the peripheral surface of guiding elements 76 and engage, and it is convex Facial 77a and with the circumferentially alternating formation of concave part 77b.The concave part of the convex surface part 77a and guiding elements 76 of displacement member 77 76b engage and the concave part 77b of displacement member 77 engaged with the convex surface part 76a of guiding elements 76 so that displacement member 77 with Can be axially moveable but cannot circumferentially moved mode be attached to guiding elements 76.77 structure of guiding elements 76 and displacement member At shift mechanism 75.
Displacement member 77 includes from its peripheral surface radially engaging pin 71 outstanding.It needs that at least one engagement is arranged Pin 71, and in this embodiment, it has been provided at predetermined intervals four engaging pins 71 in the circumferential.
Support portion 20 includes basic component 24 and the convex concave component 23 being integrally formed on basic component 24.Base component 24 is rounded in the plan view, has diameter identical with the diameter of grinding part 30, and include：It is formed in flat in peripheral part Plate-like portion 24b；Bottom outer cylindrical portion 24c is arranged in the middle section of plate-like portion 24b with axially extending towards rear side；With Inner cylinder portion 24d is arranged inside outer cylindrical portion 24c to extend from the bottom of outer cylindrical portion 24c towards front.Outer cylindrical portion 24c has The hole for being formed in its bottom and being connected to the inner peripheral surface of inner cylinder portion 24d, and the hole that is limited by the inner peripheral surface in the hole, and The inner peripheral surface of inner cylinder portion 24d constitutes the through-hole 24a that rotation axis 12 can be inserted.Negative thread is formed in through-hole 24a (not show Go out) so that support portion 20 can be connect by the screw thread between negative thread and the male thread being formed in rotation axis 12 (not shown) It closes and is attached to rotation axis 12.
Convex concave component 23 has rectangular shape, is approximately equal to the length to the plate-like portion 24b's of basic component 24 Radical length.Multiple this convex concave components 23 are circumferentially integrally formed in the plate-like portion of basic component 24 at a predetermined interval On 24b.Due to there are convex concave component 23, on the surface of support portion 20, convex surface part 21 (its when in use with grinding The rear-face contact in portion 30) and be circumferentially alternatively formed from the recessed concave part 22 of convex surface part 21.
As shown in Figure 17 and Figure 18, basic component 24 has the inner peripheral surface for being formed in outer cylindrical portion 24c in its entire inner circumferential On engaging groove 72, engaging groove 72 has and allows the width that is plugged into engaging pin 71.Engaging groove 72 has corresponding At predetermined angle position axially extending multiple first slot 72a and be connected to the first slot 72a adjacent to each other top and bottom it Between multiple second slot 72b.More specifically, the second slot 72b be shaped as with the rotation direction of support portion 20 (Figure 17 and Figure 18 In arrow C direction) tilt down on opposite direction.Here, it is defined on the basis of the upper and lower directions in Figure 17 and Figure 18 Direction up and down, grinding part 30 side are defined as upside, and the bottom side of outer cylindrical portion 24c is defined as downside.First The lower end of slot 72a and the first slot 72a and the second slot 72b be connected to each other place side wall constitute stage portion 72c, work as grinding attachment 1 in use, stage portion 72c is engaged with engaging pin 71.Due to foring the first slot 72a at each predetermined angle position, connecing It closes corresponding angular position in slot 72 and is also provided with multiple stage portion 72c.Provided with multiple engaging pins 71, Suo Youjie Dowel pin 71 is all disposed in displacement member 77, so as to be engaged with stage portion 72c at each predetermined angle position.Engaging pin 71 Engaging mechanism 70 is constituted with engaging groove 72, which is engaged at each predetermined angle position, to be maintained at circumferential On move the grinding part 30 of predetermined angular.
Support portion 20 it is expected that material is formed by such as metal, resin and rubber etc..It is similar with the material of support portion 20 is formed, The material for being best suited for grinding part 30 and workpiece W can be properly selected.
Fixed part 40 includes the diameter flange part 41 bigger than the through-hole 30a of grinding part 30 and is integrally formed with flange part 41 Leg 42.Male thread (not shown) is formd on the peripheral surface of leg 42.
As shown in figure 16, the outer cylindrical portion 24c and inner cylinder for the support portion 20 that displacement member 77 is attached at and rotation axis 12 is attached Between portion 24d.More specifically, and displacement member 77 periphery attachment engaging pin 71 can pass through screw disassembling.Accordingly Ground, by the way that displacement member 77 to be located between outer cylindrical portion 24c and inner cylinder portion 24d and by engaging pin 71 by being arranged in outer barrel Threaded hole (not shown) in portion 24c is attached to displacement member 77, displacement member 77 is attached to support portion 20, engaging pin 71 is pacified It is attached in the engaging groove 72 formed in outer cylindrical portion 24c.In this state, the bottom of outer cylindrical portion 24c and displacement member 77 it Between be provided with the spring 78 that biases displacement member 77 towards grinding part 30.The bias force of spring 78, which is less than, works as following grinding parts 30 The torque generated when contact workpiece W.
By the way that guiding elements 76 to be inserted into the inner circumferential of displacement member 77, grinding part 30 is attached to support portion 20.Pass through Male thread on the leg 42 of fixed part 40 is engaged with the negative thread (not shown) screw thread of support portion 20, the flange of fixed part 40 It catches the part that portion 41 is ground around the through-hole 30a in portion 30 so that grinding part 30 is fixed on support portion 20.At this moment, it is ground Portion 30 fixed to the degree of support portion 20 to allow grinding part 30 circumferentially moved.
Next, referring to Figure 17 and Figure 18, describing under the action of engaging mechanism 70 and shift mechanism 75, making grinding part 30 It is circumferentially moved relative to support portion 20.Since rotation axis 12 is engaged with 20 screw thread of support portion, it is rotated in rotation axis 12 When driving portion 11 drives, support portion 20 is made to rotate in the direction of arrow C.When using grinding attachment 1, grinding part 30 pushes workpiece W, and grinding part 30 by due to workpiece W rubbed generate and be applied to the rotation direction of support portion 20 (arrow C's Direction) torque on opposite direction.By being integrally attached to the guiding elements 76 of grinding part 30, transmit the torque to not The circumferentially moved mode of energy is attached to the displacement member 77 of guiding elements 76.The torque generated at this time is more than displacement member 77 78 bias force of spring biased towards grinding part 30, and the engaging pin 71 for being therefore attached to displacement member 77 fights spring 78 Bias force is moved towards the bottom of outer cylindrical portion 24c.Therefore, engaging pin 71 the inside of engaging groove 72 along generate torque direction (that is, The direction of arrow D1 in Figure 18) it is migrated towards the bottom side of outer cylindrical portion 24c, and engaged with stage portion 72c.
Due to when grinding part 30 pushes workpiece W, generating opposite with rotation direction (direction of arrow C) of support portion 20 Torque on direction, therefore the engaging pin 71 engaged with stage portion 72c is maintained by the torque.Therefore, support portion 20 Rotation is transmitted to displacement member 77 by stage portion 72c and engaging pin 71.Due to the convex surface part 77a and concave part of shifting part 77 77b is engaged with the concave part 76b of guiding elements 76 and convex surface part 76a respectively, therefore the rotation of shifting part 77 is delivered to and draws It leads component 76 and passes to the grinding part 30 for being integrally attached to guiding elements 76 by guiding elements 76.Therefore, grinding part 30 grinding workpiece W.
When leaving workpiece W to the grinding action completion of workpiece W and grinding part 30, grinding part 30 is no longer influenced by torque, And shift component 77 is biased by the bias force of spring 78 towards grinding part 30.Therefore, engaging pin 71 exists along the direction of arrow E1 72 internal migration of engaging groove.At this point, due to the bias force of spring 78, the top wall surface 72d of engaging pin 71 and the first slot 72a are kept Contact.When grinding part 30 is pressed against on the workpiecew again, grinding part 30 is by above-mentioned torque, and engaging pin 71 is engaging It is migrated along the direction of arrow D2 inside slot 72.Due to being attached with the displacement member 77 of engaging pin 71 and being attached on grinding part 30 Guiding elements 76 cannot be circumferentially moved, therefore, migration of the grinding part 30 due to engaging pin 71 inside engaging groove 72 circumferentially (i.e. the joint action of engaging mechanism 70) and relative to 20 circumferentially moved predetermined angular of support portion.
Equally, in the present embodiment, as described above, being circumferentially alternately arranged by convex concave structure on the surface of support portion 20 The convex surface part 21 and concave part 22 that part 23 is formed, wherein only convex surface part 21 is contacted with grinding part 30.Grinding part 30 is relative to support The relative position in portion 20 can change with engaging mechanism 70 and shift mechanism 75 so that the area that convex surface part 21 is contacted with grinding part 30 Domain can change.Therefore, similar with first embodiment, position of the periodically-varied grinding part 30 relative to convex surface part 21 inhibits The drastically decline of grinding capacity increases to prevent from rubbing caused by due to grinding capacity declining, to prevent grinding from burning Wound.
In addition, in this embodiment, still similar with first embodiment, relative position of the grinding part 30 relative to support portion 20 Each predetermined angle position can be changed into so that grinding part 30,31 out-of-flatness of grinding skin region can be with convex surface part 21 Reliably contact.In addition, in this embodiment, since grinding attachment 1 includes shift mechanism 75, grinding part 30 can be opposite It is automatically moved in support portion 20, the user without grinding attachment 1 is it is intended that grinding part 30 is moved relative to support portion 20. Therefore, user can continue to use grinding attachment 1 for a long time, and without worrying the decline of grinding capacity.
3rd embodiment can be amended as follows.In the third embodiment, guiding elements 76 is attached to grinding part 30, displacement Component 77 is attached by guiding elements 76, and engaging pin 71 is attached by displacement member 77, and engaging groove 72 is formed in support portion In 20.But engaging groove 72 can be formed in grinding part 30, guiding elements 76, displacement member 77 and engaging pin 71 can be attached It is connected to support portion 20.
Next, 9 arriving the grinding attachment 1 of Figure 21 descriptions according to the fourth embodiment of the invention referring to Fig.1.Such as Figure 19 and figure Shown in 20, grinding attachment 1 includes：Support portion 20, be attached to the rotation axis 12 that is driven by rotation driving portion 11 with can with turn The grinding part 30 and grinding part 30 is fixed on the fixed part on support portion 20 that moving axis 12 rotates together, is stacked on support portion 20 40.Rotation driving portion 11 has the configuration being identical with the first embodiment, and therefore, identical component is with identical reference numeral come table Show, omits detailed description.
Support portion 20 includes basic component 24 and the convex concave component 23 being integrally formed on basic component 24.Basic component 24 is rounded in the plan view, has diameter identical with the diameter of grinding part 30, and be formed so that in side view, outside Circumference is flat and central portion is recessed with cup-shaped.At the center (the most deep position of cup-shaped portion) of basic component 24, is formed and supplied The through-hole 24a that rotation axis 12 is inserted through, and through-hole 24a peripheral part is formed flat bottom 24e.
Convex concave component 23 has rectangular shape, is approximately equal to the length to the diameter of the flat peripheral part of basic component 24 To length.Multiple this convex concave components 23 are circumferentially integrally formed in the flat peripheral part of basic component 24 at a predetermined interval On.Since there are convex concave components 23, on the surface of support portion 20, be circumferentially alternatively formed convex surface part 21 (its When use with the rear-face contact of grinding part 30) and from the recessed concave part 22 of convex surface part 21.
Support portion 20 it is expected that material is formed by such as metal, resin and rubber etc..It is similar with the material of support portion 20 is formed, The material for being best suited for grinding part 30 and workpiece W can be properly selected.
Grinding part 30 is rounded in the plan view, and is formed so that in side view, peripheral part be flat and in Centre portion is recessed with cup-shaped.Grinding part 30, which has, is located at being formed by multiple abrasive grains on flat peripheral part surface in side view The grinding skin 31 of out-of-flatness.It is, for example, possible to use the coated abrasives such as known grinding stone, polydisc and sanding disc product or Non-woven fabrics grinds the flexible removing material such as fabric as grinding part 30.
As shown in Figure 19 to Figure 21, the centre in grinding part 30 forms through-hole 30a, and the first face gear 81 is attached to Through-hole 30a.In the circumferential, the first face gear 81 has pre- constant pitch.Two flange part 81a are formed as from the first face gear 81 The surface opposite with the surface of tooth of the first face gear 81 is formed extends radially outward.Although not showing in Figure 19 to Figure 21 Go out details, but one in two flange part 81a is integrally formed with the first face gear 81, another is independently of the first face gear 81 and formed.By the way that part of the grinding part 30 around through-hole 30a is maintained between two flange part 81a and passes through spiral shell Flange part 81a and the above-mentioned part of grinding part 30 are secured together to by nail, clip etc., and the first face gear 81 is attached to grinding Portion 30.Grinding part 30 and the first face gear 81 constitute the grinding tool 5 for being attached to support portion 20 when in use, the support portion 20 The rotation axis driven by rotation driving portion 11 is attached to can be rotated together with rotation axis 12, and there is edge in its surface The convex surface part 21 being circumferentially alternately arranged and from the recessed concave part 22 of convex surface part 21.
On the bottom 24e of the basic component 24 of support portion 20, the second face gear 82 is set around through-hole 24a.It is logical It crosses and is integrally formed with basic component 24 or is attached to basic component 24 using adhesive, screw, clip etc., by the second face gear 82 are arranged on support portion 20.In the circumferential, the second face gear 82, which has, allows the second face gear 82 to be nibbled with the first face gear 81 The tooth pitch of conjunction.The radial dimension of second face gear 82 is about the radial dimension of half of the first face gear 81, and the second face tooth Wheel 82 is configured to engage with the inside of the first face gear 81.First face gear 81 and the second face gear 82 constitute engaging mechanism 80, The engaging mechanism 80 is engaged at each predetermined angle position, to be maintained at the grinding part that week has moved up predetermined angular 30。
Third face gear 86 by can be axially moveable but cannot it is circumferentially moved in a manner of be attached to the second face gear 82 periphery.In the circumferential, third face gear 86 has the tooth pitch for allowing third face gear 86 to be engaged with the first face gear 81.This Outside, third face gear 86, which has, allows the second face gear 82 internal diameter installed therein and basic with the outer diameter of the first face gear 81 Equal outer diameter.Therefore, third face gear 86 is configured to engage with the outer portion of the first face gear 81.
It is arranged on the surface opposite with the surface of tooth for forming third face gear 86 of third face gear 86 and prolongs in an axial direction The leg 87 stretched.The size of leg 87 allows in the hole 24f that leg 87 is installed in the bottom 24e for being formed in basic component 24.Pass through Second face gear 82 is installed to the inner peripheral surface of third face gear 86 and leg 87 is inserted into the bottom 24e of basic component 24 Third face gear 86 is attached to the basic component 24 of support portion 20 by corresponding aperture 24f.In this state, in third face gear 86 The spring 88 that third face gear 86 is biased towards grinding part 30 is set between the 24e of bottom.Spring 88 have prevent third face Bias force of the leg 87 of gear 86 from the 24f of hole out.Since leg 87 is prevented from detaching from the 24f of hole, third face Gear 86 cannot be circumferentially moved relative to the second face gear 82.
In addition, third face gear 86 is configured so that：When leg 87 is installed in the 24f of hole, i.e., when third face gear 86 When reaching highest distance position towards the bottom 24e of support portion 20, the tip of tooth than the second face gear 82 tooth tip portion the bottom of closer to The portion sides 24e；When third face gear 86 reaches highest distance position due to the bias force of spring 88 towards grinding part 30, the tip of tooth Than the second face gear 82 tooth tip portion closer to 30 side of grinding part.In addition, third face gear 86 is attached so that the position of tooth and the Two face gears 82 are staggered in the circumferential.Third face gear 86 constitutes shift mechanism 75.
Fixed part 40 includes the diameter flange part 41 bigger than the internal diameter of the first face gear 81 and is integrally formed with flange part 41 Leg 42.It is formed with negative thread (not shown) on the inner peripheral surface of leg 42, and by by negative thread and being formed in rotation Male thread (not shown) on the peripheral surface of axis 12 is threadedly engaged, and fixed part 40 is attached to rotation axis 12.When leg 42 with When rotation axis 12 engages, flange part 41 can be contacted with the first face gear 81 so that and grinding part 30 is maintained on support portion 20, To be restricted from from its disengaging.At this point, grinding part 30 both direction can move along the axial and circumferential directions.In addition, in leg Be formed with male thread (not shown) on 42 peripheral surface, and by by the peripheral surface of leg 42 male thread and be formed in base Negative thread (not shown) screw thread engagement on the inner peripheral surface of the through-hole 24a of plinth component 24, by basic component 24 (that is, support portion 20) fixed part 40 (that is, rotation axis 12) is attached to can rotate therewith.
Next, with reference to Figure 22 and Figure 23, it will describe under the action of engaging mechanism 80 and shift mechanism 85, make grinding part 30 circumferentially relatively move relative to support portion 20.Figure 22 and Figure 23 is for explaining the grinding attachment 1 according to the present embodiment Schematic diagram of the first face gear 81 to the operation of third face gear 86.First face gear 81, the second face gear 82 and third face tooth Wheel 86 is operated by the sequence of Figure 22 (a), Figure 22 (b), Figure 22 (c), Figure 23 (a), Figure 23 (b) and Figure 23 (c) so that the first face tooth It moves in the circumferential the position of engagement between wheel 81 and the second face gear 82.Details is as follows.
Since support portion 20 is attached to rotation axis 12 by fixed part 40, so as to rotated together with rotation axis 12, because This is when rotation axis 12 is rotated driving portion 11 and drives so that support portion 20 rotates.When using grinding attachment 1, grinding part 30 Workpiece W is pushed, the bias force that third face gear 86 fights spring 88 is mobile (towards 11 side of rotation driving portion) towards bottom 24e. At this point, as shown in Figure 22 (a), the first face gear 81 and the second face gear 82 are engaged with each other, and pass through to the rotation of support portion 20 Second face gear 82 and the first face gear 81 are transmitted to grinding part 30.Therefore, grinding part 30 is ground workpiece W.
When leaving workpiece W to the grinding action completion of workpiece W and grinding part 30, grinding part 30 is no longer influenced by towards branch The pushing force that the bottom 24e of support part 20 applies, and therefore third face gear 86 by the bias force of spring 88 towards grinding part 30 Biasing.Therefore, as shown in Figure 22 (b), third face gear 86 makes the first face gear 81 increase.When third face gear 86 makes the first face When gear 81 increases, the first face gear 81 is detached from from the second face gear 82.At this point, the tooth due to the second face gear 82 and third face The tooth of gear 86 is staggered in the circumferential, and therefore, the first face gear 81 moves in the circumferential along third face gear 86, so as to third Face gear 8 engages, as shown in Figure 22 (c).
When grinding part 30 pushes workpiece W again, the bottom 24e of grinding part 30 towards support portion 20 is pushed, and the The bias force that three face gears 86 fight spring 88 is mobile (towards 11 side of rotation driving portion) towards bottom 24e.Therefore, such as Figure 23 (a) shown in, the first face gear 81 and the intermeshing of the second face gear 82.When further grinding part 30 is pushed to bearing unit 20 When, the first face gear 81 is detached from from third face gear 86, is then engaged with the second face gear 82, and along the second face gear 82 Tooth moves in the circumferential, as shown in Figure 23 (b).Therefore, it as shown in Figure 23 (c), is staggered in the circumferential in the state of a tooth pitch, First face gear 81 is engaged with the second face gear 82.Therefore, because shift mechanism 85 (third face gear 86) and engaging mechanism 80 The joint action of (the first face gear 81 and the second face gear 82), grinding part 30 are mobile predetermined in the circumferential relative to support portion 20 Angle.
Equally, in the present embodiment, as described above, being circumferentially alternately arranged by convex concave structure on the surface of support portion 20 The convex surface part 21 and concave part 22 that part 23 is formed, wherein only convex surface part 21 is contacted with grinding part 30.Grinding part 30 is relative to support The relative position in portion 20 can change with engaging mechanism 80 and shift mechanism 85 so that the area that convex surface part 21 is contacted with grinding part 30 Domain can change.Correspondingly, periodically-varied grinding part 30 position relative to convex surface part 21 similar with first embodiment, suppression The drastically decline for having made grinding capacity increases to prevent from rubbing caused by due to grinding capacity declining, to prevent being ground Burn.
In addition, in this embodiment, still similar with first embodiment, relative position of the grinding part 30 relative to support portion 20 Each predetermined angle position can be changed into so that grinding part 30,31 out-of-flatness of grinding skin region can be with convex surface part 21 Reliably contact.In addition, similar with 3rd embodiment, since grinding attachment 1 includes shift mechanism 85, grinding part 30 can Automatically moved relative to support portion 20, without grinding attachment 1 user it is intended that grinding part 30 relative to support portion 20 It is mobile.Therefore, user can continue to use grinding attachment 1 for a long time, and without worrying the decline of grinding capacity.
Fourth embodiment can be amended as follows.Although in the fourth embodiment, the first face gear 81 is attached to grinding part 30, the second face gear 82 attached 1 is connected to support portion 20, but the second face gear 82 can be attached to grinding part 30, and the first face Gear 81 can be attached to support portion 20.In this case, third face gear 86 can be attached to the outer of the second face gear 82 Week, i.e. grinding part 30.
Although some embodiments of the present invention are described above, the present invention is not limited to these Examples, and can To be carry out various modifications in the case where not departing from main idea of the present invention.
For example, support portion 20 and grinding part 30 are not limited to those of in each example, and it is configurable to other Any one of embodiment and modification.For example, according to second embodiment, 20 and of support portion of 3rd embodiment or fourth embodiment Grinding part 30 is used as support portion 20 and the grinding part 30 of first embodiment.
Although in first to fourth embodiment, grinding part 30 is in the form of annular discs, grinding part 30 can be formed as example The desired shapes such as rectangular plate shape, polygonal panel shape and oval plate shape.In this case, plate includes not only not recessed Tablet, further include the recessed shape of center portion.
In addition, in first to fourth embodiment, convex surface part 21 is basically parallel to the axial direction of rotation axis 12 from concave part 22 It is prominent, as shown in Figure 4.But for example, convex surface part 21 can be with the axially inclined predetermined angular relative to rotation axis 12 from recessed Face 22 protrudes, trapezoidal to be showed in front view, as shown in figure 24.Furthermore, it is not necessary that by convex surface part 21 and concave part 22 are formed as flat surfaces, and convex surface part 21 and concave part 22 can be formed by continuous curve surface, to be presented in front view Waveform, as shown in figure 25.
Reference numeral describes
1 grinding attachment
2 grinding tools
3 grinding tools
4 grinding tools
5 grinding tools
11 rotation driving portions
12 rotation axis
20 support portions
21 convex surface parts
22 concave parts
23 convex concave components
24 basic components
26a attachment holes
30 grinding parts
31 grinding skins
40 fixed parts
50 engaging mechanisms
51 joint protrusions
52 engaging holes
60 engaging mechanisms
61 ratchets
62 pawls
70 engaging mechanisms
71 engaging pins
72 engaging grooves
72c stage portions
75 shift mechanisms
76 guiding elements
77 displacement members
80 engaging mechanisms
81 first face gears
82 second face gears
85 shift mechanisms
86 third face gears

Claims (8)

1. a kind of grinding attachment, including：
Support portion is attached to the rotation axis driven by rotation driving portion can be rotated together with the rotation axis；With
Grinding part is stacked on the support portion and with the grinding skin of the out-of-flatness formed by multiple abrasive grains, wherein
Have in the surface of the support portion when in use with the convex surface part of the rear-face contact of the grinding part and from described convex The recessed concave part of face, the convex surface part and the concave part are alternately arranged in circumferential direction, and
The grinding attachment further includes engaging mechanism, and the engaging mechanism is engaged at each predetermined angle position, to keep The grinding part of predetermined angular or the support portion are moved in the circumferential, and the engaging mechanism is located at the support portion and institute It states between grinding part either between the rotation axis and the grinding part or between the rotation axis and the support portion.
2. grinding attachment according to claim 1, wherein the engaging mechanism includes：It is arranged in the support portion and institute State at least one joint protrusion on one in grinding part；And with the setting of corresponding predetermined angle position in the support portion and Multiple engaging holes in another in the grinding part, so as to engage with the joint protrusion or dash forward from the engagement It rises and is detached from.
3. grinding attachment according to claim 1, wherein the engaging mechanism includes：Ratchet, composition are attached to described The internal gear of the inner peripheral surface of grinding part or the support portion, and there is pre- constant pitch in the circumferential；And at least one pawl, It is attached to the rotation axis to be engaged with the ratchet.
4. grinding attachment according to claim 1 further includes shift mechanism, the engagement in response to the engaging mechanism is dynamic Work makes the grinding part or the circumferentially moved predetermined angular of the support portion.
5. grinding attachment according to claim 4, wherein
The shift mechanism includes：Guiding elements on one in the grinding part and the support portion is set；And it moves Position component is attached to institute can in the axial direction be moved along the guiding elements but in a manner of cannot moving in the circumferential It states on the periphery of guiding elements, and
The engaging mechanism includes：It is arranged on the peripheral surface of the displacement member at least in a manner of radially outstanding One engaging pin；And engaging groove, it is formed on the entire inner peripheral surface of another in the grinding part and the support portion And including stage portion, each stage portion is formed with predetermined angle position.
6. grinding attachment according to claim 4, wherein
The engaging mechanism includes：First face gear, one be attached in the support portion and the grinding part and edge It is circumferential that there is pre- constant pitch；And the second face gear, be attached to another in the support portion and the grinding part and Circumferentially there is the tooth pitch for allowing second face gear to be engaged with first face gear,
The shift mechanism includes：Third face gear, third face gear is can be axially moveable but cannot circumferentially move Dynamic mode is attached on the periphery of second face gear, and is circumferentially had and allowed third face gear and described the The tooth pitch engaged on one side, and
Third face gear has the tooth being staggered in the circumferential with second face gear.
7. a kind of grinding tool, it is attached to basic component when in use, and the basic component is attached to be driven by rotation driving portion Dynamic rotation axis with the rotation axis so as to rotate together, and have engagement prominent on the surface of the basic component It rises, the grinding tool includes：
Convex concave component is attached to the fundamental mechanism and being configured to form convex surface part and from recessed recessed of the convex surface part Face, the convex surface part and the concave part are alternately arranged in circumferential direction；With
Grinding part is stacked on the convex concave component and has the grinding skin of the out-of-flatness formed by multiple abrasive grains, Wherein
The convex concave component has the attachment hole engaged with the joint protrusion described the convex concave component to be attached at On basic component, and
There are multiple engaging holes, each engaging hole to be arranged respectively can dash forward with described engage with predetermined angle position for the grinding part It plays engagement or is detached from from the joint protrusion.
8. a kind of grinding tool, it is attached to support portion when in use, and the support portion is attached to be driven by rotation driving portion Rotation axis has in the surface of the support portion convex surface part and from described so as to rotated together with the rotation axis The recessed concave part of convex surface part, the convex surface part and the concave part are alternately arranged in circumferential direction, and the grinding tool includes：
Grinding part is stacked on the support portion and with the grinding skin of the out-of-flatness formed by multiple abrasive grains；And
Guiding elements is attached to the back side of the grinding part, wherein
By the way that the guiding elements is inserted into the grinding part in the inner circumferential that the displacement member on the support portion is arranged It is attached to the support portion, the grinding part phase is made with the joint action in response to the shift mechanism for including in the support portion For the circumferentially moved predetermined angular of the support portion.
CN201680075719.9A 2015-12-25 2016-09-02 Grinding attachment and grinding tool for the grinding attachment Pending CN108472790A (en)

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JP2015253715 2015-12-25
JP2015-253715 2015-12-25
PCT/JP2016/075869 WO2017110156A1 (en) 2015-12-25 2016-09-02 Grinding device and grinding implement for said grinding device

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JP (1) JPWO2017110156A1 (en)
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TWI626114B (en) 2018-06-11
EP3385032A1 (en) 2018-10-10
TW201722619A (en) 2017-07-01
KR20180098559A (en) 2018-09-04
US20180369982A1 (en) 2018-12-27
WO2017110156A1 (en) 2017-06-29
EP3385032A4 (en) 2019-01-02

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Application publication date: 20180831