CN208454812U - A kind of break bar with platform - Google Patents

Abstract

This application discloses a kind of break bars with platform, axis hole including two symmetrical disks and for installing cutter shaft, axis hole is located at break bar center and extends transversely into disk, disk extends along outer rim to break bar longitudinal center section respectively to intersect, two symmetrical conical surfaces are formed, the intersecting lens of the conical surface constitutes circumference cutting edge, is uniformly distributed on circumference cutting edge fluted, the opening of groove is V-type section, and circumferentially cutting edge extends to break bar transverse center section and is crossed to form the first cell wall and the second cell wall；First cell wall and the second cell wall are outwardly convex to form at least two platform, and platform extends transversely into the conical surface, form inner cutter hole.Break bar described herein with platform can slow down the degree of wear of cutting edge in cutting process, improve cutting life by the cutting pressure at dispersion cutting edge position；Platform can assist cutting as the inner cutter hole of face property simultaneously, expand cut coverage, and the inner cutter hole that platform is formed keeps the cutting pressure range of break bar bigger, and use scope is wider.

Description

A kind of break bar with platform

Technical field

This application involves tool sharpening field more particularly to a kind of break bars with platform.

Background technique

The tool of the fragile materials such as glass-cutting is commonly the break bar of plate-like, it is common to use break bar by axis hole, two sides pair The parts such as the disk of title, two conical surfaces of intersection and cutting edge form.The basic structure of break bar is disk center setting installation cutter shaft Axis hole, the outer rim of two sides disk extend outwardly for the two symmetrical conical surfaces, and two conical surfaces are crossed to form the circumference cutting edge of break bar, circumferentially The circumferentially spaced serrate slot that indent is distributed with of cutting edge.Serrate slot is made of two symmetrical groove faces that two conical surface tops are formed , the intersecting lens of two groove faces forms the inner cutter hole of serrate slot, collectively forms linear break bar cutting edge with circumference cutting edge.

In glass-cutting, break bar contacts glass surface, applies certain external pressure to break bar, in the traction of tool apron Under, break bar is cut along glass surface, a continuous cutting line can be generated along cut direction in glass surface after cutting, it The effect of external force is added afterwards, and glass-cutting face can generate vertical crack and horizontal crackle, and vertical crack will be along vertical glass table Face Directional Extension, so that glass separates.But because linear break bar edge contacts area is small, the cutting pressure that glass-cutting is subject to Power is big, with the increase of cutting mileage, will lead to circumference cutting edge position and wears, to reduce the permeance property of break bar, shadow Ring cutting quality.

Utility model content

This application provides a kind of break bars with platform, small with the contact area for solving existing linear break bar cutting edge, cutting The problem of pressure is big, easily wears.

In a first aspect, to achieve the above object, this application provides a kind of break bars with platform, including two symmetrical disks Face and axis hole for installing cutter shaft, the axis hole are located at break bar center and extend transversely into disk, disk edge respectively Outer rim extends to break bar longitudinal center section to intersect, and forms two symmetrical conical surfaces, and the intersecting lens of the conical surface constitutes circumference sword Mouthful；

It is uniformly distributed fluted on the circumference cutting edge, the opening of the groove is V-type section, and circumferentially cutting edge is to break bar Transverse center section extends and is crossed to form the first cell wall and the second cell wall；

First cell wall and the second cell wall are outwardly convex to form at least two platform, and the platform extends transversely into The conical surface, forms inner cutter hole, and the angle theta of adjacent platforms is gradually increased.

With reference to first aspect, in a first possible implementation of that first aspect, first cell wall and the second cell wall Symmetrical about break bar transverse center section, the platform is outer convex platform, and the height of adjacent platforms gradually increases, Surface area is gradually increased.

With reference to first aspect, in a second possible implementation of that first aspect, first cell wall and the second cell wall Symmetrical about break bar transverse center section, the platform is evagination trapezoid platform, and the height of adjacent platforms gradually increases, Surface area is gradually increased.

With reference to first aspect, in first aspect in the third possible implementation, the platform on first cell wall is equal For outer convex platform, the platform on second cell wall is evagination trapezoid platform, and the height of the platform of two opposite sides is identical, two pairs The angle theta angle of the adjacent platforms of side is identical.

With reference to first aspect, in the 4th kind of possible implementation of first aspect, the angle thetas of adjacent platforms is 80 °~ 150 °, preferably 90 °~120 °.

With reference to first aspect, in the 5th kind of possible implementation of first aspect, the height h of the platform is 0.5~ 2um, preferably 1.0~1.5um.

With reference to first aspect, in the 6th kind of possible implementation of first aspect, the groove depth H range of the groove is 2 ~4um, preferred scope are 2.5~3.5um.

With reference to first aspect the first~the third any one of possible implementation, in first aspect the 7th kind~the 9th In kind possible implementation, disk is two sides plane disposed in parallel, and the diameter D of break bar is 2.0~4.0mm, axis hole it is straight Diameter d is 0.8~1.2mm, and the thickness T of break bar is 0.65~1.0mm；The circumference cutting edge angle α that the conical surface is crossed to form is 100 ° ~160 °.

With reference to first aspect the first~the third any one of possible implementation, in first aspect the tenth kind~the tenth In two kinds of possible implementations, disk is outer convex globoidal, is round and smooth excessive, the evagination with the intersection of the corresponding conical surface The radius of cambered surface is 0.7~1.2mm；The outer convex globoidal by the first central cross-section cut circular arc central angle be 0.5 °~ 3.5 °, preferably 1 °；The thickness t of axis hole is 0.45~0.8mm.

With reference to first aspect the first~the third any one of possible implementation, in the 13rd kind of first aspect~the In 15 kinds of possible implementations, disk is inner concave arc surface, and the radius of the inner concave arc surface is 0.7~1.2mm, described interior Cancave cambered surface is 0.5 °~3.5 °, preferably 1 ° by the central angle that the first central cross-section cuts circular arc；The thickness t of axis hole be 0.45~ 0.8mm。

From the above technical scheme, the break bar described herein with platform can pass through the cutting at dispersion cutting edge position Pressure slows down the degree of wear of cutting edge in cutting process, improves cutting life；Platform can assist cutting as inner cutter hole simultaneously It cuts, expands cut coverage, the inner cutter hole that platform is formed keeps the cutting pressure range of break bar bigger, and use scope is wider.Mesa-shaped Shape is divided into circular arc type and linear type, and circular arc type platform break bar cutting pressure is relatively small, it is few to generate transversal crack, and side is split less, is cut Secant chipping is small, and dust is few；Linear stage break bar is with tangent line breakage is small, cutting line is smooth, cutting section is smooth, it is deep equal to split The features such as even.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, for those of ordinary skills, do not paying creation Under the premise of property is laborious, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the break bar provided by the embodiments of the present application with platform；

Fig. 2 is the schematic view of the front view of the break bar provided by the embodiments of the present application with platform；

Fig. 3 is the local A enlarged drawing of the break bar provided by the embodiments of the present application with platform；

Fig. 4 is the side structure schematic view of groove provided by the embodiments of the present application；

Fig. 5 is the side structure schematic view of groove provided by the embodiments of the present application；Straight line

Fig. 6 is the structural schematic diagram of the inner concave arc surface of disk provided by the embodiments of the present application；

Fig. 7 is the schematic diagram of the first central cross-section provided by the embodiments of the present application；

Fig. 8 is the structural schematic diagram of the outer convex globoidal of disk provided by the embodiments of the present application.

Specific embodiment

It is described in detail below by the application, will become more with these explanations the characteristics of the application with advantage It is clear, clear.

Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary " Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the attached drawings In terms of kind, but unless otherwise indicated, it is not necessary to attached drawing drawn to scale.

In the description of the present application, it should be noted that term " on ", "lower", "inner", "outside", "front", "rear", " left side " The orientation or positional relationship of instructions such as " right sides " is based on the orientation or positional relationship under the application working condition, merely to just In description the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with Specific orientation construction and operation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ", " Three " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance with " the 4th ".

Applicants have discovered that the serrate slot being distributed on circumference cutting edge is formed by two conical surface tops in existing cutting wheel structure Two symmetrical groove faces constitute, the intersecting lens of two groove faces forms the inner cutter hole of serrate slot, collectively form with circumference cutting edge Linear break bar cutting edge.But because linear break bar edge contacts area is small, the cutting pressure that glass-cutting is subject to is big, with The increase for cutting mileage, will lead to circumference cutting edge position and wears, to reduce the permeance property of break bar, influence cutting product Matter.For the generation for avoiding above-mentioned phenomenon, structure of the inventor based on existing break bar improves the structure of serrate slot.

With reference to the accompanying drawing, the specific embodiment of the application is discussed in detail.

Fig. 1 is the structural schematic diagram that the break bar with platform exemplified is preferably implemented according to one, and Fig. 2 is band shown in FIG. 1 The schematic view of the front view of the break bar of platform, Fig. 3 are the local A enlarged drawing of the break bar with platform.As shown in Figure 1 to Figure 3, band is flat The break bar of platform includes two symmetrical disks 1 and disk 2, and for installing the axis hole 5 of cutter shaft, the axis hole 5 is located at break bar center And disk is extended transversely into, the disk 1 and disk 2 extend intersection, shape to break bar longitudinal center section S1 along outer rim respectively At two symmetrical conical surfaces 3 and the conical surface 4, the intersecting lens of the conical surface 3 and the conical surface 4 constitutes circumference cutting edge 6, the circumference cutting edge 6 On be uniformly distributed fluted 7, the opening of the groove 7 is V-type section, and circumferentially cutting edge 6 prolongs to break bar transverse center section S2 The first cell wall 71 and the second cell wall 72 are stretched and are crossed to form, the hemline of groove 7 is vertical with circumference cutting edge 6；

First cell wall 71 and the second cell wall 72 are outwardly convex to form at least two platform 73, platform number be 2n≤ Tooth number Z (n=1,2,3 ... ...)；The platform 73 extends transversely, and two sides platform forms inner cutter hole.

The angle theta of adjacent platforms is gradually increased, and each platform is made to can participate in cutting in this way.Angle theta includes platform and circle The angle of all cutting edge angles and adjacent platforms, when 0 ° 80 ° of < θ <, platform gap is easily blocked, to influence permeability Can, increase technology difficulty when 150 ° 180 ° of < θ <, so the angle theta range of adjacent platforms is 80 °≤θ≤150 °, preferably 90 °≤θ≤120 °, more preferably 100 °.

The groove depth H of the groove 7 is 2~4um, preferably 2.5~3.5um；Single platform 0.5~2um of height, preferably 1.0~1.5um not only can guarantee depth of cut in this way, but also can improve permeability.

Applicants have discovered that the inner cutter hole phase with the serrate slot of the intersecting lens formation of the groove face of conical surface two sides symmetrical grooves Than the inner cutter hole that the platform in the application groove is formed is face property, the depth cutting of break bar can be participated in, with depth of cut Increase, the contact area of inner cutter hole and glass is gradually increased, and makes each Cutting platform can sufficiently and glass contact, to glass Permeability is stronger；And the sharpness that can reduce cutting edge tip, improves the wearability of break bar, and inner cutter hole and glass contact area increase While big, impact pressure suffered by cutting edge tip can be reduced, to improve cutting life；The inner cutter hole that platform is formed makes break bar Cutting pressure range it is bigger, use scope is wider.

In the application, for the structure of platform 73, this application provides multiple technologies schemes.Below by different embodiments It describes in detail to the structure of platform 73.

Embodiment 1:

In the present embodiment, the side view structure of groove 7 is as shown in Figure 4.First cell wall 71 and the second cell wall 72 about Break bar transverse center section S2 is symmetrical, and the platform 73 is outer convex arch platform, from circumference cutting edge 6 to groove 7 For on the extending direction of bottom, the height h between adjacent platforms is gradually increased, and the angle theta between adjacent platforms is gradually increased, with Distance between two conical surfaces be gradually increased, the surface area of platform is also gradually increased.

In the present embodiment, while angle theta is gradually increased with every 10 °, the height h of platform is gradually increased with every 0.5um, Ensure that each platform is involved in cutting in this way.

It should be noted that circular arc type platform in this example can only evagination be unable to indent, otherwise do not have secondary cut Effect.The cutting pressure of evagination circular arc type platform break bar is relatively small, and generation transversal crack is few, and side is split less, and cutting line chipping is small, Dust is few.

Embodiment 2:

In the present embodiment, the side view structure of groove 7 is as shown in Figure 5.First cell wall 71 and the second cell wall 72 about Break bar transverse center section S2 is symmetrical, and the platform 73 is evagination trapezoid platform, from circumference cutting edge 6 to the bottom of groove 7 For on portion's extending direction, the height h of adjacent platforms is gradually increased, and the angle theta of adjacent platforms is gradually increased, between two conical surfaces Distance be gradually increased, the surface area of platform is also gradually increased.Evagination trapezoid platform can be such that break bar has as linear stage Tangent line breakage is small, cutting line is smooth, cutting section is smooth, splits the advantages that deep uniform.In the present embodiment, angle theta with every 5 °~ 10 ° while gradually increase, the height h of platform is gradually increased with every 0.2~0.5um, it is ensured that each platform is involved in cutting.

In other embodiments, the platform 73 on first cell wall 71 is outer convex platform, second cell wall Platform 73 on 72 is evagination trapezoid platform, and the height of the platform 73 of two opposite sides is identical, the angle theta angle of the adjacent platforms of two opposite sides It spends identical；Or the groove of adjacent spaces, one is circular arc type platform, and one is linear stage, at the same have it is arc-shaped and The advantage of linear stage expands application range.

In the above embodiments, disk 1 and disk 2 are two sides plane 11 disposed in parallel and plane 21, break bar it is straight Diameter D is 2.0~4.0mm, and the diameter d of axis hole 5 is 0.8~1.2mm, and the thickness T of break bar is 0.65~1.0mm；3 He of the conical surface The circumference cutting edge angle α that the conical surface 4 is crossed to form is 100 °~160 °, and the thickness t of axis hole 5 is equal to or slightly less than break bar thickness；Disk Diameter D1 range be break bar diameter D-0.3mm~D-0.1mm.

It should be noted that the structure of platform is only exemplary in above-described embodiment, all can be realized in groove is put down The structure of platform forming face inner cutter hole each falls within protection scope of the present invention.

Furthermore applicant have also found that, the thickness of existing break bar axis hole is equal to or slightly less than disk thickness, cause axis hole with Cutter shaft contact surface is big, and break bar is made to be easy to happen card bits during cutting and cut the problems such as having some setbacks.In addition, being arranged in parallel Break bar disk and knife rest inner wall between voidage it is smaller, the exclusion of larger clast has some setbacks.

As the more preferred embodiment in above-described embodiment 1, embodiment 2 or other embodiments, disk can be in the application Using globoidal structure, to reduce the thickness of axis hole, axis hole and cutter shaft contact area are small when cutting, are not easily accessible chips of glass, no Easily there is the risk of sliding knife and card bits.

Applicants have discovered that when the diameter D1 of disk is too small, break bar swings bigger than normal, makes to cut unstable, and disk The angle that the excessive then break bar of diameter D1 is swung is small, before causing break bar to involve in break bar disk and cutter saddle trough inner wall in rotary course Chips of glass be not easy to be discharged；As 0 < t < 0.45mm of axis hole thickness, break bar and cutter shaft contact surface are too small, in cutting process easily There is beat, axis hole thickness t is excessive and the risks such as sporadic sliding knife and card bits easily occurs, appropriate when reducing axis hole cutting and cutter shaft Contact area is small, chips of glass can be made to be not easily accessible, and is less prone to the risk of sliding knife and card bits.

As shown in fig. 6, in a specific embodiment, the disk 1, disk 2 are inner concave arc surface 12 and inner concave arc surface 22, The radius of the inner concave arc surface 12 and inner concave arc surface 22 is 0.7~1.2mm, and the inner concave arc surface cuts circle by the first central cross-section The central angle of arc is 0.5 °~3.5 °, preferably 1 °；The thickness T of break bar is 0.65~1.0mm, the thickness t of axis hole is 0.45~ 0.8mm。

Disk thickness T is gradually increased from axis hole between disk highest point, can reduce the thickness of axis hole, avoids the occurrence of sliding knife And the risk of card bits, and can guarantee that break bar swing angle is suitable, stablize break bar cutting, and inner concave arc surface makes break bar and knife rest Gap increases, and cuts smooth.

It should be noted that the first central cross-section described herein is simultaneously to cut disk and the conical surface And it is shown in which that the schematic diagram of first central cross-section, S3 are the first center by the plane at the break bar center, such as Fig. 7 Section.

As shown in figure 8, in a specific embodiment, the disk 1, disk 2 are outer convex globoidal 13 and outer convex globoidal 23, With the intersection of the conical surface 3 and the conical surface 4 be it is round and smooth excessively, the radius of the outer convex globoidal 13 and outer convex globoidal 23 is 0.7~ 1.2mm, the inner concave arc surface are 0.5 °~3.5 °, preferably 1 ° by the central angle that the first central cross-section cuts circular arc；Break bar Thickness T is 0.65~1.0mm, and the thickness t of axis hole is 0.45~0.8mm.

The intersection for the conical surface break bar disk for being used to cut is designed for rounding off in the application, the knife of such structure Wheel, two sides disk and two conical surfaces for forming circumference cutting edge do not form wedge angle, to improve the impact resistance of break bar, simultaneously Reduce the friction area between break bar two sides disk and knife rest inner wall, reduce the resistance in break bar rotary course, reduce break bar because Rotate it is unsmooth caused by cutting quality fraction defective.

Break bar described herein can buffer the cutting pressure of circumference cutting edge receiving, improve impact resistance, make circumference cutting edge It is not easy to collapse scarce, reduces the degree of wear of break bar, improve cutting quality, extend break bar cutting life.Platform is by increasing cutting edge Contact area and reduce the sharpness at cutting edge tip and improve the wearability of break bar.

Conical tooth break bar with platform can realize the requirement to break bar parameter by Ultra-precision Turning, to meet cutting need It asks.On the basis of maintaining the performance of conventional tool, realize glass product to the high positioning requirements of cutting.

It is described the invention in detail above in conjunction with detailed description and exemplary example, but these explanations are simultaneously It is not considered as limiting the invention.It will be appreciated by those skilled in the art that without departing from the spirit and scope of the invention, Can be with various equivalent substitutions, modifications or improvements are made to the technical scheme of the invention and its embodiments, these each fall within the present invention In the range of.Scope of protection of the present invention is subject to the appended claims.

Claims (10)

1. a kind of break bar with platform, the axis hole (5) including two symmetrical disks (1,2) and for installing cutter shaft, the axis Hole (5) is located at break bar center and extends transversely into disk, and the disk (1,2) is respectively along outer rim to break bar longitudinal center section Extend intersection, form two symmetrical conical surfaces (3,4), the intersecting lens of the conical surface (3,4) constitutes circumference cutting edge (6), feature It is,

It is uniformly distributed fluted (7) on the circumference cutting edge (6), the opening of the groove (7) is V-type section, circumferentially cutting edge (6) extend to break bar transverse center section and be crossed to form the first cell wall (71) and the second cell wall (72)；

First cell wall (71) and the second cell wall (72) are outwardly convex to be formed at least two platform (73), the platform (73) The conical surface is extended transversely into, inner cutter hole is formed, the angle theta of adjacent platforms is gradually increased.

2. the break bar according to claim 1 with platform, which is characterized in that first cell wall (71) and the second cell wall (72) symmetrical about break bar transverse center section, the platform (73) is outer convex platform, the height of adjacent platforms It gradually increases, surface area is gradually increased.

3. the break bar according to claim 1 with platform, which is characterized in that first cell wall (71) and the second cell wall (72) symmetrical about break bar transverse center section, the platform (73) is evagination trapezoid platform, the height of adjacent platforms It gradually increases, surface area is gradually increased.

4. the break bar according to claim 1 with platform, which is characterized in that the platform (73) on first cell wall (71) It is outer convex platform, the platform (73) on second cell wall (72) is evagination trapezoid platform, the platform (73) of two opposite sides Height it is identical, the angle theta angle of the adjacent platforms of two opposite sides is identical.

5. the break bar according to claim 1 with platform, which is characterized in that the angle theta of adjacent platforms is 80 °~150 °.

6. the break bar according to claim 1 with platform, which is characterized in that the height h of the platform (73) be 0.5~ 2um。

7. the break bar according to claim 1 with platform, which is characterized in that the groove depth H range of the groove (7) be 2~ 4um。

8. according to the described in any item break bars with platform of claim 2~4, which is characterized in that disk (1,2) is that two sides are parallel The plane (11,21) of setting, the diameter D of break bar are 2.0~4.0mm, and the diameter d of axis hole (5) is 0.8~1.2mm, the thickness of break bar Degree T is 0.65~1.0mm；The circumference cutting edge angle α that the conical surface (3,4) is crossed to form is 100 °~160 °.

9. according to the described in any item break bars with platform of claim 2~4, which is characterized in that disk (1,2) is outer convex arc Face (12,22), with the intersection of the corresponding conical surface (3,4) to be round and smooth excessive, the radius of the outer convex globoidal (12,22) is 0.7 ~1.2mm；The outer convex globoidal (12,22) is 0.5 °~3.5 ° by the central angle that the first central cross-section cuts circular arc；Axis hole (5) Thickness t be 0.45~0.8mm.

10. according to the described in any item break bars with platform of claim 2~4, which is characterized in that disk (1,2) is indent Cambered surface (13,23), the radius of the inner concave arc surface (13,23) are 0.7~1.2mm, and the inner concave arc surface (13,23) is by first The central angle of the cut circular arc in heart section is 0.5 °~3.5 °；The thickness t of axis hole (5) is 0.45~0.8mm.