CN203343496U - Twist bit - Google Patents
Twist bit Download PDFInfo
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- CN203343496U CN203343496U CN 201320311805 CN201320311805U CN203343496U CN 203343496 U CN203343496 U CN 203343496U CN 201320311805 CN201320311805 CN 201320311805 CN 201320311805 U CN201320311805 U CN 201320311805U CN 203343496 U CN203343496 U CN 203343496U
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- stop collar
- twist bit
- bit body
- mentioned
- spiral
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Abstract
The utility model provides a twist bit and belongs to the technical field of a cutter. The twist bit solves problems of poor universality and inconvenient usage of a twist bit in the prior art. The twist bit comprises a cylindrical twist bit body. One end part of the twist bit body is provided with a drill point corner; an external cylindrical surface of the twist bit body is provided with a spiral edge part extending to the drill point corner; the twist bit further comprises a stop collar with a closed end; the external lateral surface of the other end of the twist bit body is hexagonal; the other end of the twist bit body is inserted in the stop collar and the hexagonal external lateral surface of the twist bit body is circumferentially stopped and fastened with the internal lateral surface of the stop collar; between the other end surface of the twist bit body and the stop collar is arranged a spring enabling the twist bit body to axially stretch in the stop collar; and between the stop collar and the twist bit body is arranged a pin roll limiting the twist bit body to axially stretch in the stop collar. The twist bit is advantaged by long service life, convenient usage and strong universality and practicality.
Description
Technical field
The utility model belongs to cutter manufacturing technology field, relates to a kind of spiral bit.
Background technology
Drill bit is to go out through hole or blind hole in order to drilling on solid material, and can be to the cutter of existing hole reaming, and it uses very extensive in machining.Drill bit commonly used mainly contains fluted drill, chit drill, centre drill, depth drill and cylindrical drill etc.Wherein fluted drill is to use the most a kind of drill bit.Fluted drill is rotary cutting by its relative fixed axis instrument with the circular hole of drilling workpiece, because its chip pocket curl is similar to fried dough twist, gains the name, and the material of fluted drill is generally high-speed steel or hard alloy steel.
As Chinese document discloses a kind of drill bit [CN202155576U; Application number: 201120271419.2], this drill bit comprises shank and blade, and described shank adopts the high speed material to make, and described blade adopts carbide alloy to make, and described blade is fixedly connected with shank.The drill bit of the type has following deficiency: be at first drill bit when work, blade shake comparatively violent on shank, and blade employing Hardmetal materials is made, although hardness is higher, but toughness is poor, therefore easily cause the blade fracture, make drilling life of bit greatly reduce; In addition, this drill bit is because its length is fixed, and it only has fixing maximum drilling depth, so versatility is not strong, uses also inconvenient.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of more fluted drill of long life that has.
The purpose of this utility model can realize by following technical proposal: a kind of spiral bit, comprise a cylindrical body, an end end at body has drill point angle, offer spiral helicine blade on the external cylindrical surface of described body and this blade extends to the drill point angle place, it is characterized in that, this spiral bit also comprises the stop collar that an end is blind end, the other end lateral surface of described body is a hexagon lateral surface, the other end of this body is plugged in above-mentioned stop collar and the hexagon lateral surface of this body and circumferential spacing the fixing of medial surface of stop collar, be provided with between the other end end face of described body and stop collar and can make body axial flexible spring in stop collar, be provided with the bearing pin that limits body axial stretching in stop collar between described stop collar and body.
The other end of body circumferentially is arranged in stop collar regularly, and this physical efficiency and stop collar are synchronously rotated.Owing between stop collar and body, being provided with bearing pin, when not plugging bearing pin, the other end of body can go deep in stop collar, now the drilling depth of spiral bit is more shallow, spring in stop collar can play cushioning effect, reduces the blade risk of breakage, extends drilling life of bit.When the drilling depth of fluted drill is dark not, bearing pin can be installed, now the other end of body only has sub-fraction length can stretch in stop collar, and the fluted drill entire length increases, and therefore can adapt to darker boring requirement.
In above-mentioned spiral bit, radially offer a spacing hole on described body, offer the connecting hole corresponding with above-mentioned spacing hole on described stop collar, above-mentioned bearing pin is located in above-mentioned spacing hole and connecting hole.Be located in spacing hole and connecting hole by bearing pin, realize that body is with respect to the stop collar axial restraint.
In above-mentioned spiral bit, the inner bottom surface of described stop collar is provided with a spring base, and the other end of described body is provided with a spring clamping position, and above-mentioned spring one end is resisted against on spring base, and the other end is connected on above-mentioned spring clamping position.Such design makes the spring fixing-stable, can play better the damping, buffering effect, farthest reduces the fluted drill risk of breakage.
In above-mentioned spiral bit, be provided with the graduation mark that indicates drilling depth on the blade of described body.Arranging of graduation mark can the handled easily personnel be observed drilling depth, makes to hole convenient and efficient.
In above-mentioned spiral bit, described bulk material is carbide alloy, and the material of described stop collar is high-speed steel.
In above-mentioned spiral bit, the angle of described drill point angle is 115 °.
Compared with prior art, this drill bit has the following advantages:
1, this fluted drill is provided with spring between body and stop collar, and the strenuous vibration that the fluted drill of decaying produces in boring procedure reduce the Drill Crack probability, so this spiral bit has advantages of long service life.
2, body and the stop collar split due to this spiral bit arranges, and between is provided with the bearing pin that can limit body axial stretching in stop collar, therefore make this spiral bit can adapt to the boring requirement of the different depths, there is easy to use, versatility and practical.
The accompanying drawing explanation
Fig. 1 is the perspective view of this drill bit.
Fig. 2 is the sectional structure schematic diagram of A-A in Fig. 1.
In figure, 1, body; 1a, drill point angle; 1b, blade; 1c, spring clamping position; 2, stop collar; 3, spring; 4, bearing pin; 5, spacing hole; 6, connecting hole; 7, spring base; 8, graduation mark.
The specific embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in Figure 1, this spiral bit comprises a cylindrical body 1 and stop collar 2, and body 1 material is carbide alloy, the material of stop collar 2 is high-speed steel, an end end at body 1 has drill point angle 1a, and this drill point angle 1a is the α angle shown in Fig. 1, and its angle is 115 °.Offer spiral helicine blade 1b on the external cylindrical surface of body 1 and this blade 1b extends to drill point angle 1a place, be provided with graduation mark 8 on blade 1b, arranging of graduation mark can the handled easily personnel be observed drilling depth, makes to hole convenient.
As shown in Figure 2, the other end lateral surface of body 1 is a hexagon lateral surface, one end of stop collar 2 is blind end, the other end of this body 1 is plugged in stop collar 2 and the hexagon lateral surface of this body 1 and circumferential spacing the fixing of medial surface of stop collar 2, also be provided with between the other end end face of body 1 and stop collar 2 and can make body 1 axial flexible spring 3 in stop collar 2, particularly, offer a spring base 7 on the inner bottom surface of stop collar 2, the other end of body 1 is provided with a spring clamping position 1c, spring one end is resisted against on spring base 7, the other end is connected on above-mentioned spring clamping position 1c.
In addition, be provided with between stop collar 2 and body 1 and limit the bearing pin 4 of body 1 at stop collar 2 interior axial stretchings.Particularly, as depicted in figs. 1 and 2, radially offer a spacing hole 5 on body 1, offer the connecting hole corresponding with spacing hole 56 on stop collar 2, bearing pin 4 is located in above-mentioned spacing hole 5 and connecting hole 6, realizes that body 1 is with respect to stop collar 2 axial restraints.Spring 3 in stop collar 2 can play cushioning effect, reduces blade 1b risk of breakage, extends drilling life of bit.When boring is comparatively shallow, can take off bearing pin 4, when the drilling depth of fluted drill is dark not, bearing pin 4 can be installed, make fluted drill can bore darker hole.Simultaneously, in the process of boring, can understand drilling depth by the graduation mark 8 on observation blade 1b, use very convenient.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more been used the terms such as body 1, drill point angle 1a, blade 1b, spring clamping position 1c, stop collar 2, spring 3, bearing pin 4, spacing hole 5, connecting hole 6, spring base 7, graduation mark 8, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (5)
1. a spiral bit, comprise a cylindrical body (1), an end end at body (1) has drill point angle (1a), offering spiral helicine blade (1b) and this blade (1b) on the external cylindrical surface of described body (1) extends to drill point angle (1a) and locates, it is characterized in that, this spiral bit also comprises the stop collar (2) that an end is blind end, the other end lateral surface of described body (1) is a hexagon lateral surface, the other end of this body (1) be plugged in above-mentioned stop collar (2) and the medial surface of the hexagon lateral surface of this body (1) and stop collar (2) circumferentially spacing fixing, be provided with between the other end end face of described body (1) and stop collar (2) and can make body (1) axial flexible spring (3) in stop collar (2), be provided with the bearing pin (4) that limits body (1) axial stretching in stop collar (2) between described stop collar (2) and body (1).
2. spiral bit according to claim 1, it is characterized in that, radially offer a spacing hole (5) on described body (1), offer the connecting hole (6) corresponding with above-mentioned spacing hole (5) on described stop collar (2), above-mentioned bearing pin (4) is located in above-mentioned spacing hole (5) and connecting hole (6).
3. spiral bit according to claim 1, it is characterized in that, the inner bottom surface of described stop collar (2) is provided with a spring base (7), the other end of described body (1) is provided with a spring clamping position (1c), it is upper that above-mentioned spring (3) one ends are resisted against spring base (7), and the other end is connected on above-mentioned spring clamping position (1c).
4. according to claim 1 or 2 or 3 described spiral bits, it is characterized in that, be provided with on the blade (1b) of described body (1) and indicate drilling depth graduation mark (8).
5. according to claim 1 or 2 or 3 described spiral bits, it is characterized in that, described body (1) material is carbide alloy, and the material of described stop collar (2) is high-speed steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320311805 CN203343496U (en) | 2013-05-16 | 2013-05-16 | Twist bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320311805 CN203343496U (en) | 2013-05-16 | 2013-05-16 | Twist bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203343496U true CN203343496U (en) | 2013-12-18 |
Family
ID=49743430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320311805 Expired - Fee Related CN203343496U (en) | 2013-05-16 | 2013-05-16 | Twist bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203343496U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127488A (en) * | 2015-09-06 | 2015-12-09 | 邓永辉 | Twist drill for improving using effect |
| CN106626091A (en) * | 2016-12-30 | 2017-05-10 | 苏州赛易特环保科技有限公司 | High speed tool |
| CN106738371A (en) * | 2016-12-30 | 2017-05-31 | 苏州赛易特环保科技有限公司 | It is a kind of to facilitate dismounting type cutter |
| CN107052873A (en) * | 2017-02-13 | 2017-08-18 | 张斌 | A kind of pair of pawl cutter holder |
| CN112404527A (en) * | 2020-12-18 | 2021-02-26 | 江苏博安工具有限公司 | Can dismantle and add and connect handle twist drill |
-
2013
- 2013-05-16 CN CN 201320311805 patent/CN203343496U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127488A (en) * | 2015-09-06 | 2015-12-09 | 邓永辉 | Twist drill for improving using effect |
| CN106626091A (en) * | 2016-12-30 | 2017-05-10 | 苏州赛易特环保科技有限公司 | High speed tool |
| CN106738371A (en) * | 2016-12-30 | 2017-05-31 | 苏州赛易特环保科技有限公司 | It is a kind of to facilitate dismounting type cutter |
| CN107052873A (en) * | 2017-02-13 | 2017-08-18 | 张斌 | A kind of pair of pawl cutter holder |
| CN112404527A (en) * | 2020-12-18 | 2021-02-26 | 江苏博安工具有限公司 | Can dismantle and add and connect handle twist drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20140516 |