CN208163256U - Circumferentially positioned component and knife sharpener - Google Patents

Abstract

The utility model is suitable for knife sharpener technical field, provide a kind of circumferentially positioned component and knife sharpener, the circumferentially positioned component includes clamp assemblies for clamping cutter and the circumferentially positioned seat that can cooperate with clamp assemblies, circumferentially positioned component provided by the utility model does not use the position of the lower extreme point of cutting edge band to carry out keeping out positioning, but it is used as to keep out using the point at lower extreme point greater than 1mm and a little be positioned, understandably, keeping out a little during cutter use herein, it can't be destroyed, therefore, it is every that the formal parameter of cutter herein is all the same, circumferentially positioned seat can be thus allowed uniformly to position the relative position of each cutter and mounting base to same position and accurate positioning, to improve the grinding precision of cutter.

Description

Circumferentially positioned component and knife sharpener

Technical field

The utility model belongs to knife sharpener technical field more particularly to a kind of circumferentially positioned component and has this circumferentially positioned The knife sharpener of component.

Background technique

In existing, after a longer time of use, the cutting edge of cutter can be worn milling cutter, and the tool sharpening after abrasion goes out The precision of part come can decline to a great extent, and be currently, there are a kind of knife sharpener, referring to Figure 1 and Fig. 2, after grinding loss Cutter 300, cutter 300 can utilize again after being ground, and this knife sharpener 100 includes the clamping group for clamping cutter 300 Part 200, axially position seat 111, circumferentially positioned seat 120 and the processing stations 130 that can cooperate with clamp assemblies 200, clamping Component 200 includes adjustment component 210 for clamping cutter 300 and is flexibly connected with adjustment component 210 and can be with axis The mounting base 240 cooperated to positioning seat 111, circumferentially positioned seat 120 and processing stations 130, wherein axially position seat 111 is used In aligned cutting tool 300 and mounting base 240 in the relative position of 300 axial direction of cutter, circumferentially positioned seat 120 is used for aligned cutting tool 300 with mounting base 240 in the relative position of 300 circumferential direction of cutter, when by the axial direction of mounting base 240 and cutter 300 and Circumferential direction has good positioning and then clamp assemblies 200 is mounted on processing stations 130 and make processing stations 130 and peace Seat 240 is filled to cooperate, at this point, the face to be ground on cutter 300 can be bonded just with the grinding wheel 112 on knife sharpener 100, at this point, Cutter 300 can be ground.

Definition, clamp assemblies 200 and circumferentially positioned seat 120 form circumferentially positioned component, and circumferentially positioned seat 120 includes can The circumferential erecting bed 121 cooperated with mounting base 240 and the circumferential abutment 122 for keeping out the rotation of cutter 300, specifically, Aligned cutting tool 300 and mounting base 240 are when the position of 300 circumferential direction of cutter, firstly, clamping cutter using clamp assemblies 200 300, at this point, clamp cutter 300 in clamp assemblies 200 is adjustment component 210, and adjusting component 210 can be relative to installation Seat 240 rotates, so that cutter 300 can also be rotated relative to mounting base 240, then, mounting base 240 is mounted on circumferential installation On platform 121, adjustment component 210 can be manually rotated, so that cutter 300 is relative to the rotation of mounting base 240 until the cutting edge band of cutter 300 Until keeping out in circumferential abutment 122, this moment, the relative position of cutter 300 and mounting base 240 is circumferentially positioned seat 120 Then the cutter 300 and mounting base 240 for needing to position are locked, in the relative position of 300 circumferential direction of cutter so that cutter 300 It is kept fixed with the relative position of mounting base 240, in this way, just can guarantee, after mounting base 240 is mounted on processing stations 130, The surface to be ground of cutter 300 can be bonded just with grinding wheel 112.

Currently, circumferentially positioned component is to keep out to be determined in circumferential abutment 122 by the lower extreme point 304 of cutter 300 Position, however, cutter 300 is during converted products, abrasion be cutting edge band 302 lower extreme point 304 position, and it is every 304 abrasion condition of lower extreme point 300 upper cutting edge band 302 of cutter is difference, causes it can not be by every cutter to be ground 300 and the relative position of mounting base 240 be all uniformly adjusted to above-mentioned relative position, in this way, cutter 300 is mounted on processing again After on station 130, the surface to be ground of each cutter 300 can not be bonded with grinding wheel 112 just, can seriously affect cutter 300 The precision of grinding.

Utility model content

The purpose of this utility model is to provide a kind of circumferentially positioned components, it is intended to solve in the prior art due to different knives The lower extreme point abrasion condition of the cutting edge band of tool it is different and caused by cutter and the Relatively orientation of mounting base inaccuracy, finally The technical issues of seriously affecting tool lapping precision.

The utility model is realized in this way a kind of circumferentially positioned component, is used for knife sharpener, the circumferentially positioned component packet The circumferentially positioned seat that includes the clamp assemblies for clamping cutter and can cooperate with the clamp assemblies, the clamp assemblies packet It includes the adjustment component for clamping the cutter, be sheathed on the peace on the adjustment component and with the adjustment component rotation connection Dress seat and the circumferential limit assembly rotated for limiting the adjustment component relative to the mounting base, the circumferentially positioned seat packet Include the circumferential erecting bed for cooperating with the mounting base and for keeping out the cutter rotation to position the cutter and institute Mounting base is stated in the circumferential abutment of cutter circumferential direction relative position, the cutter include cutter body and with it is described Cutter body connects and extends spirally the cutting edge band to be formed and for cutting product, institute around the axial direction of the cutter body Circumferential abutment is stated to keep out in the cutting edge band；The circumferential direction abutment keeps out cutting when on the cutting edge band Point contact on land with the circumferential abutment to keep out a little, it is described keep out a little the lower extreme point with the cutting edge band in described The distance of the axial direction of cutter is greater than 1mm.

Further, the clamp assemblies further include that one end is connected to the mounting base and the other end is connected to the adjustment Component simultaneously drives the adjustment component to rotate relative to the mounting base the cutter to be pressed in the bullet of the circumferential abutment Property component.

Further, the elastic parts the first stay column that include one end be fixedly connected with the adjustment component, one end with The second stay column and one end that the mounting base is fixedly connected are connect and the other end and second stay column with first stay column Tension spring of the connection to drive the adjustment component to rotate relative to the mounting base.

Further, the adjustment component is equipped with towards the end face of the mounting base with the rotary shaft of the adjustment component Line is the arc accommodation groove in the center of circle, and first stay column is located in the arc accommodation groove, one end of second stay column and institute State that mounting base is fixedly connected and the other end extends to the arc accommodation groove, the tension spring is located in the arc accommodation groove.

Further, the adjustment component includes the undertaking pipe fitting being rotatablely connected with the mounting base, is located in described hold Elastic collet in jointed tubular workpieces and for clamping the cutter and with the undertakings pipe fitting sleeving and be used to control the elasticity Collet clamps the extruding pipe fitting of the cutter.

Further, bellmouth is equipped in the undertaking pipe fitting, the elastic collet is placed in the bellmouth, the bullet Property collet inside be equipped with the axial direction folder knife through-hole that extends and the cutter is supplied to pass through along the bellmouth, the elasticity Collet has elasticity in its radial direction, is additionally provided with the screw thread that axis is overlapped with the axis of the bellmouth in the undertaking pipe fitting Hole, the lateral wall for squeezing pipe fitting are equipped with the external screw thread cooperated with the threaded hole, and the extruding pipe fitting is threadedly connected to institute Elastic collet described in threaded hole and pushing tow is stated so that the elastic collet clamps the cutter.

Further, the lateral wall of the elastic collet is equipped with the first annular of the axis setting around the elastic collet Groove, the pipe fitting that squeezes are equipped with the protrusive board for being inserted into the first annular groove and being used to drive the elastic collet mobile.

Further, the lateral wall of the adjustment component is equipped with the second annular of the axis setting around the adjustment component Groove, the side wall of the mounting base are equipped with pin hole, and the clamp assemblies further include that one end is fixedly connected in the pin hole and another One end is inserted into the second annular groove and moves in a circle in the axis in the second annular groove around the adjustment component Pin.

Further, the side wall of the mounting base is additionally provided with the tapped through hole that radially direction extends, the circumferential limit Hyte part includes that one end is fixedly connected on the mounting base and the other end extends around the axis of the mounting base and is located at institute It states the arc spring lamination between tapped through hole and the adjustment component and is combined in the tapped through hole and for described in pushing tow Arc spring lamination is to be pressed in the pushing tow screw for adjusting component lateral wall for the arc spring lamination.

The utility model additionally provides a kind of knife sharpener, which includes above-mentioned circumferentially positioned component.

The utility model having the technical effect that compared with the existing technology：Circumferentially positioned component provided by the utility model is not It carries out keeping out positioning using the position of the lower extreme point of cutting edge band, but uses the point being greater than at 1mm apart from lower extreme point to be used as and support Catch point is positioned, it is possible to understand that ground, keeping out a little during cutter use herein can't be destroyed, therefore, often The formal parameter of cutter herein is all the same, it can thus allow circumferentially positioned seat uniformly by each cutter and mounting base Relative position position to same position and accurate positioning, to improve the grinding precision of cutter.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the utility model embodiment, below will to the utility model embodiment or Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings described below is only Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is the perspective view of knife sharpener provided by the embodiment of the utility model；

Fig. 2 is that circumferentially positioned seat provided by the embodiment of the utility model makees circumferentially positioned schematic diagram to cutter；

Fig. 3 is the perspective view of cutter provided by the embodiment of the utility model；

Fig. 4 is the partial enlarged view of Fig. 2；

Fig. 5 is the main view of cutter provided by the embodiment of the utility model；

Fig. 6 is the perspective view of clamp assemblies provided by the embodiment of the utility model；

Fig. 7 is the cross-sectional view of clamp assemblies provided by the embodiment of the utility model；

Fig. 8 is the cross-sectional view of clamp assemblies provided by the embodiment of the utility model；

Fig. 9 is the exploded view of clamp assemblies provided by the embodiment of the utility model；

Figure 10 is the exploded view of clamp assemblies provided by the embodiment of the utility model.

Description of symbols：

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be noted that when to be referred to as " being fixed on " or " being set to " another for element A element, it can be directly on the other element or indirectly on another element.When an element is known as " even It is connected to " another element, it can be directly to another element or be indirectly connected on another element.

It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

Finally, " axial direction of cutter " is the direction y in Fig. 3 in full text, " circumferential direction of cutter " is x in Fig. 3 Direction.

For the ordinary skill in the art, above-mentioned term can be understood in the utility model as the case may be In concrete meaning.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.

Referring to Figure 1 to Fig. 5, circumferentially positioned component provided by the utility model is used for knife sharpener, and described circumferentially positioned group Part includes clamp assemblies 200 for clamping cutter 300 and the circumferentially positioned seat that can cooperate with the clamp assemblies 200 120, the clamp assemblies 200 include for clamping the adjustment component 210 of the cutter 300, being sheathed on the adjustment component 210 Above and with the mounting base 240 of adjustment component 210 rotation connection and for limiting the relatively described peace of the adjustment component 210 The circumferential limit assembly 260 that seat 240 rotates is filled, the circumferentially positioned seat 120 includes the week for cooperating with the mounting base 240 To erecting bed 121 and for keeping out the cutter 300 rotation to position the cutter 300 with the mounting base 240 in described The circumferential abutment 122 of 300 circumferential direction relative position of cutter, the cutter 300 include cutter body 301 and with the knife Tool main body 301 connects and extends spirally the cutting edge to be formed and for cutting product around the axial direction of the cutter body 301 Band 302, the circumferential direction abutment 122 are kept out in the cutting edge band 302；Definition, the circumferential direction abutment 122 are kept out in described When on cutting edge band 302, the point that contact on the cutting edge band 302 with the circumferential abutment 122 is described to keep out a little 303 Keep out a little 303 with the lower extreme point 304 of the cutting edge band 302 be greater than 1mm at a distance from the axial direction of the cutter 300.

Referring to Figure 1 to Fig. 5, circumferentially positioned component provided by the utility model does not use the lower end of cutting edge band 302 The position of point 304 carries out keeping out positioning, but is used as to keep out using the point 303 at lower extreme point greater than 1mm and a little be positioned, That is, the h in Fig. 4 and Fig. 5>1mm.It is to be appreciated that keeping out a little 303 during each cutter use, not herein It can be destroyed, it is therefore, every that the formal parameter of cutter herein is all the same, it can thus allow circumferentially positioned seat 120 to unite One ground positions each cutter 300 and the relative position of mounting base 240 to same position and accurate positioning, to improve cutter 300 grinding precision, it is preferable that it is described keep out a little 303 at a distance from the lower extreme point 304 for 1-3mm.

Fig. 6 to Figure 10 is referred to, further, the clamp assemblies 200 further include that one end is connected to the mounting base 240 And the other end is connected to the adjustment component 210 and the adjustment component 210 is driven to rotate relative to the mounting base 240 with by institute State the elastic parts that cutter 300 is pressed in the circumferential abutment 122.The utility model is additionally arranged bullet in clamp assemblies 200 Property component, specifically, one end of elastic parts is connected to mounting base 240 and the other end is connected to the adjustment component 210 and drives Dynamic adjustment component 210 is rotated relative to mounting base 240 cutter 300 is pressed in circumferential abutment 122, is pacified by mounting base 240 After being filled on circumferential erecting bed 121, in the presence of elastic parts, so that cutter 300 contacts always with circumferential abutment 122, Then the relative position of cutter 300 and mounting base 240 is locked by circumferential limit assembly 260 again, at this point, the knife determined Tool 300 and the relative position of mounting base 240 ensure that precision, so that circumferentially positioned seat 120 orients the cutter 300 come and peace Dress seat 240 relative position enable to by mounting base 240 installation to knife sharpener 100 processing stations 130 when, cutter 300 Surface to be ground can be contacted just with grinding wheel 112, ensure that 300 grinding precision of cutter.

Fig. 6 to Figure 10 is referred to, further, the elastic parts includes one end and the fixed company of the adjustment component 210 The second stay column 252 and one end and described first that the first stay column 251 for connecing, one end are fixedly connected with the mounting base 240 are drawn Column 251 connects and the other end is connect to drive the relatively described mounting base 240 of the adjustment component 210 with second stay column 252 The tension spring 253 of rotation.Specifically, after mounting base 240 is mounted on circumferential erecting bed 121, tension spring 253 will pull first Stay column 251 is mobile, and then adjustment component 210 and cutter 300 is driven to rotate relative to mounting base 240, until cutter 300 supports In circumferential abutment 122, tension spring 253 is still within tensional state at this time, so that cutter 300 is pressed in circumferential abutment 122.By In tension spring 253 during long-time service, in the case where same deformation quantity, the variation of pulling force is smaller, in this way, in bullet Property component when being pressed on different cutters 300 in circumferential abutment 122, the deformation quantity of miniature deformation occurs for circumferential abutment 122 It is all the same, thus each cutter 300 and the relative position of mounting base 240 accurately and uniformly can be adjusted to phase With relative position, this relative position can be realized by mounting base 240 installation to knife sharpener 100 processing stations 130 when, knife The surface to be ground of tool 300 can contact just with grinding wheel 112.

Fig. 8 and Figure 10 are referred to, further, the adjustment component 210 is equipped with towards the end face of the mounting base 240 Using the rotation axis of the adjustment component 210 as the arc accommodation groove 254 in the center of circle, first stay column 251 is located at the arc In accommodation groove 254, one end of second stay column 252 is fixedly connected with the mounting base 240 and the other end holds to the arc The extension of slot 254 is set, the tension spring 253 is located in the arc accommodation groove 254.By by the first stay column 251, the second stay column 252 And tension spring 253 is arranged in arc accommodation groove 254, so that clamp assemblies 200 are more compact.

Fig. 7 to Figure 10 is referred to, further, the adjustment component 210 includes being rotatablely connected with the mounting base 240 Accept pipe fitting 211, be located in it is described undertaking pipe fitting 211 in and for clamp the cutter 300 elastic collet 220 and with institute It states and accepts the socket of pipe fitting 211 and for controlling the extruding pipe fitting 230 that the elastic collet 220 clamps the cutter 300.Further Ground, the undertaking pipe fitting 211 is interior to be equipped with bellmouth 213, and the elastic collet 220 is placed in the bellmouth 213, the elasticity The inside of collet 220 is equipped with the folder knife through-hole for extending along the axial direction of the bellmouth 213 and the cutter 300 being supplied to pass through 221, the elastic collet 220 has elasticity in its radial direction, is additionally provided with axis and the taper in the undertaking pipe fitting 211 The threaded hole 214 that the axis in hole 213 is overlapped, the lateral wall for squeezing pipe fitting 230 are outer equipped with cooperating with the threaded hole 214 Screw thread 231, the extruding pipe fitting 230 are threadedly connected to elastic collet 220 described in the threaded hole 214 and pushing tow so that the bullet Property collet 220 clamps the cutter 300.When needing by adjusting 210 clamp-on tool 300 of component, first cutter 300 is inserted into In folder knife through-hole 221 in elastic collet 220, then rotary squeezing pipe fitting 230, so that squeezing pipe fitting 230 pushes elastic collet 220 move in bellmouth 213, and moving direction is towards the lesser side movement of 213 diameter of bellmouth, at this point, bellmouth 213 Elastic collet 220 will be squeezed, since elastic collet 220 has elasticity in radial direction, elastic collet 220 will be by knife Tool 300 clamps, so that cutter 300 can not be subjected to displacement relative to mounting base 240 in the axial direction again.And at this point, due to adjustment Component 210 and mounting base 240 are rotatablely connected, therefore, cutter 300 relative to mounting base 240 cutter 300 circumferential direction still It can rotate, that is, cutter 300 can be with rotation, for subsequent circumferentially positioned 120 knife edge of seat relative to mounting base 240 at this time Tool 300 and mounting base 240 are in the relative position of the circumferential direction of cutter 300.

Fig. 8 to Figure 10 is referred to, further, the lateral wall of the elastic collet 220 is equipped with around the elastic collet The first annular groove 222 of 220 axis setting, the extruding pipe fitting 230, which is equipped with, is inserted into the first annular groove 222 simultaneously Protrusive board 232 for driving the elastic collet 220 mobile.After cutter 300 is ground, need cutter 300 from folder It holds component 200 to disassemble, is based on this structure, when needing to dismantle cutter 300, can reversely rotate and squeeze pipe fitting 230, at this point, Protrusive board 232 will drive the direction that elastic collet 220 is relatively large in diameter to bellmouth 213 and pull, during pulling, elastic collet 220 can gradually flick outward, and no longer clamp-on tool 300, at this point, can easily tear cutter 300 from clamp assemblies 200 open It unloads down.

Fig. 7 to Figure 10 is referred to, further, the lateral wall of the adjustment component 210 is equipped with around the adjustment component The second annular groove 212 of 210 axis setting, the side wall of the mounting base 240 are equipped with pin hole 241, the clamp assemblies 200 Further include that one end is fixedly connected in the pin hole 241 and the other end is inserted into the second annular groove 212 and in described second The pin 242 to move in a circle in annular groove 212 around the axis of the adjustment component 210.Component 210 is adjusted with respect to mounting base During 240 rotations, axis of the pin 242 in the second annular groove around adjustment component 210 moves in a circle, to adjust component 210 rotation provides guiding role.

Fig. 7 to Figure 10 is referred to, further, the side wall of the mounting base 240 is additionally provided with what radially direction extended Tapped through hole 243, the circumferential direction limit assembly 260 include one end be fixedly connected on the mounting base 240 and the other end around described The axis of mounting base 240 extends and is located at the arc spring lamination 261 between the tapped through hole 243 and the adjustment component 210 And it is combined in the tapped through hole 243 and for arc spring lamination 261 described in pushing tow so that the arc spring lamination 261 to be pressed in The pushing tow screw 262 of adjustment 210 lateral wall of component.Specifically, in circumferentially positioned seat 120 by cutter 300 and mounting base 240 Relatively orientation it is good after, that is, after cutter 300 is pressed on circumferential abutment 122 by elastic parts, rotary lifting Screw 262, so that pushing tow screw 262 is mobile to adjustment component 210 by arc spring lamination 261, until arc spring lamination 261 and adjustment group Part 210 is close to, and due to the effect of frictional force, adjusting component 210 at this time just can not continue to rotate relative to mounting base 240, thus real Now the relative position of cutter 300 and mounting base 240 is locked.The utility model embodiment passes through 262 pushing tow arc of pushing tow screw Elasticity, to limit the rotation of adjustment component 210, relative to pushing tow screw 262 directly for the contact of adjustment component 210, arc Shape elastic slice 261 and the contact area of adjustment component 210 are bigger, during prolonged use, exchange the damage of whole group part 210 It is relatively light, the service life of clamp assemblies 200 is improved, if in addition, pushing tow screw 262 is directly contacted with component 210 is adjusted, In long-term use process, the lateral wall of adjustment component 210 will receive the scribing of pushing tow screw 262, so that adjustment component 210 and peace The installation for filling seat 240 generates loosening, can seriously affect the machining accuracy of cutter 300.Preferably, the arc spring lamination 261 and institute State the integrated molding of mounting base 240.

Referring to Figure 1, the utility model additionally provides a kind of knife sharpener, which includes above-mentioned circumferentially positioned component. Circumferentially positioned modular construction structure feature having the same in the circumferentially positioned modular construction and the various embodiments described above, and rise It acts on identical, does not repeat herein.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of circumferentially positioned component is used for knife sharpener, the circumferentially positioned component includes the clamp assemblies for clamping cutter And the circumferentially positioned seat that can cooperate with the clamp assemblies, the clamp assemblies include the adjustment for clamping the cutter Component is sheathed on the adjustment component and with the mounting base of the adjustment component rotation connection and for limiting the adjustment The circumferential limit assembly that component is rotated relative to the mounting base, the circumferentially positioned seat include for cooperating with the mounting base Circumferential erecting bed and for keeping out cutter rotation to position the cutter and the mounting base in the cutter circumferential direction side To the circumferential abutment of relative position, which is characterized in that the cutter includes cutter body and connect with the cutter body And the cutting edge band to be formed and for cutting product is extended spirally around the axial direction of the cutter body, the circumferential direction abutment It keeps out in the cutting edge band；It is described circumferential direction abutment keep out when on the cutting edge band, on the cutting edge band with it is described The point of circumferential abutment contact is to keep out a little, it is described keep out a little the lower extreme point with the cutting edge band in the axial direction side of the cutter To distance be greater than 1mm.

2. circumferentially positioned component as described in claim 1, which is characterized in that the clamp assemblies further include that one end is connected to institute State mounting base and the other end is connected to the adjustment component and the adjustment component is driven to rotate relative to the mounting base with by institute State the elastic parts that cutter is pressed in the circumferential abutment.

3. circumferentially positioned component as claimed in claim 2, which is characterized in that the elastic parts includes one end and the adjustment The second stay column and one end and described first that the first stay column that component is fixedly connected, one end are fixedly connected with the mounting base are drawn Column connects and the other end is connected with second stay column to drive the tension spring for adjusting component and rotating relative to the mounting base.

4. circumferentially positioned component as claimed in claim 3, which is characterized in that the adjustment end of the component towards the mounting base Face is equipped with using the rotation axis of the adjustment component as the arc accommodation groove in the center of circle, and first stay column is located at arc appearance It sets in slot, one end of second stay column is fixedly connected with the mounting base and the other end extends to the arc accommodation groove, institute Tension spring is stated to be located in the arc accommodation groove.

5. circumferentially positioned component as described in claim 1, which is characterized in that the adjustment component includes turning with the mounting base The undertaking pipe fitting of dynamic connection is located in the undertaking pipe fitting and is used to clamp the elastic collet of the cutter and holds with described Jointed tubular workpieces are socketed and for controlling the extruding pipe fitting that the elastic collet clamps the cutter.

6. circumferentially positioned component as claimed in claim 5, which is characterized in that bellmouth is equipped in the undertaking pipe fitting, it is described Elastic collet is placed in the bellmouth, and the inside of the elastic collet extends and supplies equipped with the axial direction along the bellmouth The folder knife through-hole that the cutter passes through, the elastic collet have elasticity in its radial direction, are additionally provided in the undertaking pipe fitting The threaded hole that axis is overlapped with the axis of the bellmouth, the lateral wall for squeezing pipe fitting, which is equipped with, to be cooperated with the threaded hole External screw thread, the extruding pipe fitting is threadedly connected to elastic collet described in the threaded hole and pushing tow so that the elastic collet clamps The cutter.

7. circumferentially positioned component as claimed in claim 6, which is characterized in that the lateral wall of the elastic collet is equipped with around institute The first annular groove of the axis setting of elastic collet is stated, the extruding pipe fitting is equipped with the insertion first annular groove and is used in combination In the protrusive board for driving the elastic collet mobile.

8. the circumferentially positioned component as described in claim 1-7 any one, which is characterized in that the lateral wall of the adjustment component Second annular groove equipped with the axis setting around the adjustment component, the side wall of the mounting base are equipped with pin hole, the folder Hold that component further includes that one end is fixedly connected in the pin hole and the other end is inserted into the second annular groove and in described second The pin to move in a circle in annular groove around the axis of the adjustment component.

9. the circumferentially positioned component as described in claim 1-7 any one, which is characterized in that the side wall of the mounting base is also set The tapped through hole for having radially direction to extend, the circumferential direction limit assembly include that one end is fixedly connected on the mounting base and another One end extends and is located at the arc spring lamination between the tapped through hole and the adjustment component around the axis of the mounting base And it is combined in the tapped through hole and for arc spring lamination described in pushing tow the arc spring lamination is pressed in the adjustment The pushing tow screw of component lateral wall.

10. a kind of knife sharpener, which is characterized in that including circumferentially positioned component as described in any one of claims 1-9.