CN209394087U

CN209394087U - Hole saw and equipment for aperture

Info

Publication number: CN209394087U
Application number: CN201821427165.7U
Authority: CN
Inventors: 贾宝帅
Original assignee: Bosch Power Tools China Co Ltd
Current assignee: Bosch Power Tools China Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-09-17
Anticipated expiration: 2028-08-31

Abstract

This application provides hole saw and for the equipment of aperture.According to the hole saw (100) of the application, have axis (A), the hole saw (100) includes: cylindrical ontology (120)；And setting is in multiple cutters tooth (110) of the circumferential edges of the ontology (120), the multiple cutter tooth (110) includes: dividing tooth (1121,1125), the outer straight-tooth (1123,1126) for dividing tooth (1122,1124) and not biasing far from the axis (A) biasing in towards the axis (A) biasing, wherein, for 80% or more cutter tooth in the multiple cutter tooth (110), the ratio between the tooth depth (H) of the cutter tooth and the cutter tooth and the tooth pitch (P) of its previous cutter tooth is between 30%-60%.

Description

Hole saw and equipment for aperture

Technical field

This application involves a kind of hole saw and the equipment for being accompanied with this hole saw.

Background technique

Hole saw is also referred to as hole making drill, is a kind of common cutting tool that round hole is processed in modern industry or engineering.Hole saw It is typically installed on portable power tool, is widely used due to it has many advantages, such as easy to operate flexible, easy to carry.

Hole saw is for processing circular hole on the materials such as wood, plastics, metal and glass fibre.Existing hole saw one As include a columnar ontology, and the equally distributed cutter tooth of circumferential edges in ontology one end.Existing hole saw for During the material aperture of such as wood etc, there is a problem of cutter tooth burn it is serious, in the material for such as metal etc There are problems that cutter tooth serious wear when aperture and cause its restricted lifetime, and there is also be difficult to that cutting is discharged for existing hole saw The problems such as.

Therefore, it is necessary to be modified to the hole saw of electric tool, to overcome defect existing in the prior art.

Utility model content

The application is intended to provide a kind of improved hole saw and is accompanied with the tapping equipment of this hole saw.According to the application's Hole saw is easy to be discharged cutting in for material Tapping procedures, and the small and service life of burning is long.

For this purpose, a kind of hole saw (100) is provided, with axis (A), the hole saw according to the one aspect of the application (100) include:

Cylindrical ontology (120)；And

Multiple cutters tooth (110) in the circumferential edges of the ontology (120) are set, and the multiple cutter tooth (110) includes: court To the axis (A) bias in divide tooth (1121,1125), far from the axis (A) bias it is outer divide tooth (1122,1124), The straight-tooth (1123,1126) not biased,

Wherein, for 80% or more cutter tooth in the multiple cutter tooth (110), the tooth depth (H) of the cutter tooth and the cutter tooth Ratio between the tooth pitch (P) of its previous cutter tooth is between 30%-60%.

According to a kind of embodiments possible, each of the multiple cutter tooth (110) cutter tooth all has rake face, preceding knife Face includes planar section (b) and cambered surface part (g), described flat for 80% or more cutter tooth in the multiple cutter tooth (110) The length (S) of face part (b) is less than or equal to the 20% of the tooth depth (H) of the cutter tooth, and the length of the preferably described planar section (b) Spend (S) is less than or equal to the tooth depth (H) of the cutter tooth 15%.

According to a kind of embodiments possible, in the multiple cutter tooth (110):

The adjacent outer cutter tooth of any two divides tooth amount different, divides tooth amount is biggish to divide the tooth high score tooth amount of tooth smaller outside The outer tooth for dividing tooth it is high high；And

The adjacent interior cutter tooth of any two divides tooth amount different, divide tooth amount it is biggish in divide the tooth high score tooth amount of tooth smaller In divide the tooth of tooth high high.

According to a kind of embodiments possible, in three cutters tooth of arbitrary neighborhood of the multiple cutter tooth (110), any two Adjacent cutter tooth divides the difference of tooth amount between 0.15mm-0.3mm.

According to a kind of embodiments possible, the multiple cutter tooth (110) includes two or more groups cutter tooth (112,114), Each group of cutter tooth (112) in the two or more groups cutter tooth (112,114) includes: first point of tooth on circumgyration incision direction Divide in the first of amount tooth (1121), second point of tooth amount first outside divide tooth (1122), the first straight-tooth (1123), first point of tooth amount Divide outside second tooth (1124), second point of tooth amount second in divide tooth (1125) and the second straight-tooth (1126), and described first point Tooth amount is greater than second point of tooth amount.

According to a kind of embodiments possible, in each group of cutter tooth:

Point for dividing tooth (1121) in first, dividing tooth (1122), any two cutter tooth in the first straight-tooth (1123) outside first Tooth amount difference between 0.15mm-0.3mm, and

Divide tooth (1124) outside second, divide in second between tooth (1125), any two cutter tooth in the second straight-tooth (1126) Divide tooth amount difference between 0.15mm-0.3mm.

According to a kind of embodiments possible, in continuous three cutters tooth of the arbitrary neighborhood in the multiple cutter tooth (110), There is the first tooth pitch (P1) between first cutter tooth and the second cutter tooth, there is the second tooth pitch between the second cutter tooth and third cutter tooth (P2), when first tooth pitch (P1) is greater than the second tooth pitch (P2), first cutter tooth divides tooth amount to be less than described the Two cutters tooth divide tooth amount, also, when first tooth pitch (P1) is less than the second tooth pitch (P2), point of first cutter tooth Tooth amount divides tooth amount greater than second cutter tooth.

According to a kind of embodiments possible, for any one cutter tooth (1124) in the multiple cutter tooth (110), the knife The anterior angle (α) of tooth (1124) is between 3 ° -10 °, and the relief angle (β) of the cutter tooth (1124) is between 30 ° -50 °.

Another aspect provides a kind of equipment for aperture at it by the application comprising:

Rotatable rotary shaft；And

Hole saw as described above, the hole saw and the rotary shaft couple, and under the rotation of rotary shaft driving Carry out aperture.

According to a kind of embodiments possible, the equipment is one of electric tool or bench saw, wherein the electronic work Tool includes electric hand drill and impact drill.

According to the application, hole saw attaches to the equipment for aperture, and there is hole saw itself improved cutter tooth to configure, and is applicable in Range is wider, and the service life is long, and work efficiency is high, and thus work efficiency is high for the tapping equipment of subsidiary this hole saw, and user experience is good.

Detailed description of the invention

Below by according to specific embodiment and in conjunction with attached drawing come be more completely understood and recognize the above-mentioned of the application and Other aspects, in the accompanying drawings:

Fig. 1 is the stereoscopic schematic diagram according to a kind of hole saw of embodiments possible of the application；

Fig. 2 is the side schematic view according to a kind of hole saw of embodiments possible of the application；

Fig. 3 is according to the side schematic view after a kind of expansion of the peripheral wall of the hole saw of embodiments possible of the application；

Fig. 4 is the top view according to a kind of unfolded state of the hole saw of embodiments possible of the application；

Fig. 5 is the floor map according to a kind of two kinds of cutters tooth of embodiments possible of the application；

Fig. 6 is the floor map according to a kind of two neighboring cutter tooth of embodiments possible of the application；And

Fig. 7 is the floor map according to a kind of adjacent three cutters tooth of embodiments possible of the application.

Specific embodiment

Present invention relates generally to the equipment for aperture, and with hole saw coupled with it, the tapping equipment is especially It is portable power tool or bench drill, portable power tool includes electric drill and impact drill etc..

It will now be described with reference to the drawings some embodiments of the application.

Fig. 1-Fig. 3 diagrammatically illustrates a kind of hole saw 100 of specific embodiment according to the application, with axis A. Hole saw 100 includes the cutter tooth 110 of cylindrical ontology 120 and the circumferential edges that 120 one end of ontology is arranged in.

Fig. 4 shows the top view of the unfolded state of hole saw 100 shown in Fig. 1.Fig. 6 is can according to one kind of the application The floor map of the two neighboring cutter tooth 1124,1126 of row embodiment.Referring to fig. 4 and Fig. 6, hole saw 100 include multiple knives Tooth 110.Comprising dividing (the knife of " inside " shown in Fig. 4 of tooth 1121,1125 in biasing towards axis A in these cutters tooth 110 Tooth), far from axis A biasing outer divide tooth 1122,1124 (cutter tooth in " outside " shown in Fig. 4) and the straight-tooth not biased 1123,1126.For 80% or more the cutter tooth (such as cutter tooth 1124) in multiple cutters tooth (110), the tooth depth H of the cutter tooth 1124 Ratio between the cutter tooth 1124 and the tooth pitch P of its previous cutter tooth 1125 is between 30%-60%.In some embodiments In, for 80% or more the cutter tooth (such as cutter tooth 1124) in multiple cutters tooth (110), the tooth depth H and the knife of the cutter tooth 1124 Ratio between tooth 1124 and the tooth pitch P of its previous cutter tooth 1125 is preferably between 35%-50%.In some embodiments In, for each of multiple cutters tooth 110 cutter tooth (such as cutter tooth 1124), the tooth depth H of the cutter tooth 1124 and the cutter tooth 1124 Ratio between the tooth pitch P of its previous cutter tooth 1125 between 30%-60%, the preferably tooth depth H of the cutter tooth 1124 and Ratio between the cutter tooth 1124 and the tooth pitch P of its previous cutter tooth 1125 is preferably between 35%-50%.

In this application, the tooth depth of cutter tooth refers to the depth or height of cutter tooth in the vertical direction.That is, cutter tooth What tooth height and tooth depth referred to is same numerical value.The distance between two neighboring cutter tooth is defined as tooth pitch P.Specifically, any knife Distance between the front end of the shoulder of its immediate previous cutter tooth 1125 in the front end of the shoulder c of tooth (such as cutter tooth 1124) It is defined as tooth pitch P.

With continued reference to Fig. 6, in multiple cutters tooth 110, each cutter tooth (such as cutter tooth 1124) has rake face and shoulder c.Preceding knife envelope includes planar section b and cambered surface part g, and plane portion b has length S.In multiple cutters tooth 110, often A cutter tooth (such as cutter tooth 1124) all has anterior angle α and rear angle beta.Anterior angle α is defined as the planar section of the rake face of cutter tooth and erects Angle between straight plane.Angle beta is defined as the angle between the shoulder surface of cutter tooth and horizontal plane afterwards.

It should be noted that previous cutter tooth here refer to relative to the cutter tooth along hole saw circumgyration incision direction preceding One cutter tooth.It should be noted that the length S of planar section b here is the length of planar section itself, that is to say, that length S is Length of the planar section b on its anterior angle angle [alpha] direction, the not vertical length of planar section b in the vertical direction.

In some embodiments, the length of the planar section b of any cutter tooth (such as cutter tooth 1124) in multiple cutters tooth 110 Spend S is less than or equal to its tooth depth H 20%.Also, the length S for being preferably provided to the planar section b of any cutter tooth is less than or equal to The 15% of its tooth depth H.In some embodiments, the length S of the planar section of cutter tooth is less than 1mm.

In this way, the rake face of the cutter tooth 110 of hole saw 100 has less planar section, in contrast, before cutter tooth 110 Knife face has more cambered surface part.Under being configured as cambered surface part in rake face with larger proportion, reduce out Resistance during hole is conducive to chip removal, because cambered surface is than facing the chip removal being conducive in Tapping procedures directly, and resistance is small.

In some embodiments, for any cutter tooth (such as cutter tooth 1124) in multiple cutters tooth 110, the anterior angle α of cutter tooth Between 3 ° -10 °, and the rear angle beta of the cutter tooth is between 30 ° -50 °.Such knife-tooth structure is not variable in Tapping procedures Shape.

In this application, the interior radial distance for dividing tooth or dividing tooth to deviate its vertical position outside is known as a point tooth amount.Here, divide The absolute value of the numerical value of tooth amount deviation distance indicates.Fig. 5 is illustrated two kinds of cutters tooth (that is, straight-tooth 1123 and interior dividing tooth 1125,1121) divide tooth amount.As shown in figure 5, straight-tooth 1123 divides tooth amount to be 0, that inside divides tooth 1125 divides tooth amount for t1, interior point Tooth 1121 divides tooth amount to be t2.According to an embodiment of the present application, divide tooth amount biggish cutter tooth, its own tooth in the vertical direction High (tooth depth) is also larger.For example, the interior t1 for dividing tooth amount for dividing tooth amount t2 to divide tooth 1125 greater than in for dividing tooth 1121, then interior to divide tooth The high H2 of 1121 tooth divides the tooth of tooth 1125 high H1 in being greater than.It should understand, although dividing for tooth within Fig. 5, divide tooth outside Divide tooth amount and tooth height is also same situation.

In some embodiments, in multiple cutters tooth 110, the adjacent outer cutter tooth of any two divides tooth amount different, and Point tooth amount is biggish outer to divide the lesser outer tooth for dividing tooth of the tooth high score tooth amount of tooth high.Point of the adjacent interior cutter tooth of any two Tooth amount is different, and divide tooth amount it is biggish in divide the tooth high score tooth amount of tooth it is lesser in divide the tooth of tooth high.

In this way, being cut into circle on material during hole saw 100 is rotated on material so as to for material aperture Slot, the periphery for dividing tooth to be responsible for incising circular slot outside, the inner circumferential for inside dividing tooth to be responsible for incising circular slot, straight-tooth are responsible for incising circular slot It is one week intermediate.In this way, being conducive to chip removal in Tapping procedures.

Further, divide the cutter tooth of tooth amount since the tooth of than small point tooth amount cutter tooth of its tooth height is tall and big greatly, when hole saw 100 is rotating During aperture, for cut periphery, dividing the tooth height of tooth outside is being alternatively arranged for small one and large one, for cut inner circumferential, interior point The tooth height of tooth is also being alternatively arranged for small one and large one, and the tall and big cutter tooth of tooth is first worn, when the cutter tooth of canine tooth high (that is, dividing tooth amount greatly) Tooth height when may wear to as the tooth height of the cutter tooth of small tooth high (that is, small point of tooth amount), all cutters tooth carry out aperture work together Make.In this way, cutter tooth meeting serious wear is first worn in the high biggish cutter tooth of tooth especially when for material aperture as metal, Then in the case that all cutters tooth work together, hole saw is had a longer life expectancy.

Fig. 7 is shown according to a kind of plane of adjacent three cutters tooth 1121,1122,1123 of embodiments possible of the application It is intended to.According to an embodiment of the present application, in three cutters tooth of arbitrary neighborhood in multiple cutters tooth 110, the connected knife of any two Tooth divides the difference of tooth amount between 0.15mm-0.3mm.

With continued reference to Fig. 7, in continuous three cutters tooth of the arbitrary neighborhood in multiple cutters tooth 110, the first cutter tooth 1121 with There is the first tooth pitch P1 between second cutter tooth 1122, there is the second tooth pitch P2 between the second cutter tooth 1122 and third cutter tooth 1123. When the first tooth pitch P1 is greater than the second tooth pitch P2, the first cutter tooth 1121 divides tooth amount to divide tooth amount less than the second cutter tooth 1122.When When first tooth pitch P1 is less than the second tooth pitch P2, the first cutter tooth 1121 divides tooth amount to divide tooth amount greater than the second cutter tooth 1122.In this way Cutter tooth arrangement, in Tapping procedures, cutter tooth is unlikely to deform.

Referring to fig. 4, in some embodiments, multiple cutters tooth 110 include two or more groups cutter tooth.For example, multiple groups cutter tooth It is configured as repeating to arrange along 100 circumgyration incision direction of hole saw, wherein every group of cutter tooth all includes multiple cutters tooth.It should manage Solution, although illustrating only two groups of cutters tooth in Fig. 4, hole saw 100 can have the cutter tooth of any group of number more than two groups.When So, according to the diameter of the ontology 100 of hole saw 100, multiple cutters tooth 110 will appear last group of cutter tooth and it is imperfect or last A cutter tooth and incomplete situation.

In some embodiments, each group of cutter tooth (for example, cutter tooth group 112) in multiple groups cutter tooth all includes: towards axis A Divide in tooth 1121, second in the first of biasing and divides tooth 1125；First far from axis A biasing divides tooth 1122, second to divide tooth outside outside 1124；And the first straight-tooth 1123, the second straight-tooth 1126 not biased.Wherein, divide in tooth 1121 and second in first and divide tooth 1125 divide tooth amount different, and divide that divides tooth 1124 outside tooth 1122 and second to divide tooth amount also different outside first.For example, in first Divide first point of tooth amount for dividing tooth 1124 that there is larger point of tooth amount outside tooth 1121 and second, and divides outside tooth 1125 and first in second and divide Tooth 1122 has second point of tooth amount of smaller point of tooth amount.In some embodiments, tooth is divided in all and that divides tooth outside divides tooth amount all Less than 1mm, it is preferably all in divide tooth and that divides tooth outside divides tooth amount between 0.4mm-0.7mm.

In some embodiments, each group of cutter tooth 112 includes: and divides in the first of first point of tooth amount on circumgyration incision direction Divide outside the first of 1121, second points of tooth amounts of tooth tooth 1122, first 1123, first points of tooth amounts of straight-tooth second outside divide tooth 1124, the Divide tooth 1125 and the second straight-tooth 1126 in the second of two points of tooth amounts, and first point of tooth amount is greater than second point of tooth amount.

In some embodiments, divide outside tooth 1121, first that divide tooth 1122, the first straight-tooth 1123 these three are adjacent in first In cutter tooth, divide the difference of tooth amount between 0.15mm-0.3mm between any two cutter tooth.Divide in tooth 1124, second outside second In point tooth 1125, the second straight-tooth 1126 these three adjacent cutters tooth, divide the difference of tooth amount in 0.15mm- between any two cutter tooth Between 0.3mm.

It should be appreciated that inside dividing tooth in each group of cutter tooth, dividing tooth and straight-tooth that can otherwise arrange outside.Interior point Tooth divides tooth amount to divide tooth amount that can also otherwise be arranged with divide tooth outside.

According to the application, hole saw provides more excellent aperture performance for the tapping equipment of its attachment.According to the hole of the application Saw has the configuration of improved cutter tooth, hence improves the performance of hole saw itself, improves aperture efficiency.Moreover, according to the application Hole saw be suitable for be multiple material aperture.Use the hole saw of the application for material aperture during, be easy to chip removal, resistance It is small, burn it is small, thus according to the application hole saw have the advantages that the service life grow.

Although describing the application herein with reference to specific embodiment, scope of the present application is not limited to shown Details.Without departing from the basic principle of the application, various modifications can be made for these details.

Claims

1. a kind of hole saw (100), with axis (A), the hole saw (100) be characterized in that include:

Cylindrical ontology (120)；And

Multiple cutters tooth (110) in the circumferential edges of the ontology (120) are set, and the multiple cutter tooth (110) includes: towards institute State axis (A) biasing in divide tooth (1121,1125), the outer tooth (1122,1124) and not of dividing far from the axis (A) biasing The straight-tooth (1123,1126) of biasing,

Wherein, for 80% or more cutter tooth in the multiple cutter tooth (110), the tooth depth (H) of the cutter tooth and the cutter tooth and its Ratio between the tooth pitch (P) of previous cutter tooth is between 30%-60%.

2. hole saw (100) according to claim 1, which is characterized in that each of the multiple cutter tooth (110) cutter tooth All there is rake face, rake face includes planar section (b) and cambered surface part (g), for 80% in the multiple cutter tooth (110) Above cutter tooth, the length (S) of the planar section (b) are less than or equal to the 20% of the tooth depth (H) of the cutter tooth.

3. hole saw (100) according to claim 1, which is characterized in that each of the multiple cutter tooth (110) cutter tooth All there is rake face, rake face includes planar section (b) and cambered surface part (g), for 80% in the multiple cutter tooth (110) Above cutter tooth, the length (S) of the planar section (b) are less than or equal to the 15% of the tooth depth (H) of the cutter tooth.

4. hole saw (100) according to any one of claim 1-3, which is characterized in that in the multiple cutter tooth (110) In:

The adjacent outer cutter tooth of any two divides tooth amount different, divides tooth amount is biggish to divide the tooth high score tooth amount of tooth lesser outer outside Divide the tooth of tooth high；

The adjacent interior cutter tooth of any two divides tooth amount different, divide tooth amount it is biggish in divide the tooth high score tooth amount of tooth it is lesser in Divide the tooth of tooth high.

5. hole saw (100) according to any one of claim 1-3, which is characterized in that in the multiple cutter tooth (110) In three cutters tooth of arbitrary neighborhood, the adjacent cutter tooth of any two divides the difference of tooth amount between 0.15mm-0.3mm.

6. hole saw described in any one of -3 (100) according to claim 1, which is characterized in that the multiple cutter tooth (110) packet Cutter tooth containing two or more groups (112,114), each group of cutter tooth (112) in the two or more groups cutter tooth (112,114) On circumgyration incision direction include: first point of tooth amount first in divide tooth (1121), second point of tooth amount first outside divide tooth (1122), the first straight-tooth (1123), first point of tooth amount second outside divide tooth (1124), second point of tooth amount second in divide tooth (1125) and the second straight-tooth (1126), and first point of tooth amount is greater than second point of tooth amount.

7. hole saw (100) according to claim 6, which is characterized in that in each group of cutter tooth:

Divide tooth (1121) in first, tooth (1122), any two cutter tooth in the first straight-tooth (1123) is divided outside first to divide tooth amount Difference between 0.15mm-0.3mm, and

Divide tooth (1124) outside second, divide point between tooth (1125), any two cutter tooth in the second straight-tooth (1126) in second The difference of tooth amount is between 0.15mm-0.3mm.

8. hole saw (100) according to any one of claim 1-3, which is characterized in that in the multiple cutter tooth (110) Arbitrary neighborhood continuous three cutters tooth in, between the first cutter tooth and the second cutter tooth have the first tooth pitch (P1), the second cutter tooth with There is the second tooth pitch (P2) between third cutter tooth, when first tooth pitch (P1) is greater than the second tooth pitch (P2), described the One cutter tooth divides tooth amount to divide tooth amount less than second cutter tooth, also, when first tooth pitch (P1) is less than second tooth When away from (P2), first cutter tooth divides tooth amount to divide tooth amount greater than second cutter tooth.

9. hole saw (100) according to any one of claim 1-3, which is characterized in that for the multiple cutter tooth (110) In any one cutter tooth (1124), the anterior angle (α) of the cutter tooth (1124) is between 3 ° -10 °, the relief angle of the cutter tooth (1124) (β) is between 30 ° -50 °.

10. a kind of equipment for aperture, which is characterized in that the equipment includes:

Rotatable rotary shaft；And

Hole saw as claimed in any one of claims 1-9 wherein, the hole saw and the rotary shaft couple, and in the rotary shaft Rotation driving lower carry out aperture.

11. equipment according to claim 10, which is characterized in that the equipment is one of electric tool or bench saw, institute Stating electric tool includes electric hand drill and impact drill.