CN205464485U - High -speed steel straight shank fluted drill of preventing splitting - Google Patents
High -speed steel straight shank fluted drill of preventing splitting Download PDFInfo
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- CN205464485U CN205464485U CN201620225005.9U CN201620225005U CN205464485U CN 205464485 U CN205464485 U CN 205464485U CN 201620225005 U CN201620225005 U CN 201620225005U CN 205464485 U CN205464485 U CN 205464485U
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- swingle
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- straight shank
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Abstract
The utility model discloses a high -speed steel straight shank fluted drill of preventing splitting, including drilling rod, drill bit, pressure sensor, rotary rod, compression head, compressing rod, spring, recess, atmospheric pressure chamber and steel bushing, drilling rod one end is connected the drill bit, the other end is connected the rotary rod, inside is equipped with pressure sensor, the outside is equipped with the atmospheric pressure chamber, rotary rod surface cover has the steel bushing, the outside is equipped with the recess, recessed wall connects the bottom the spring, the spring top is connected compressing rod, the compressing rod top is connected compression head, this fluted drill pass through pressure sensor, when the fluted drill is blocked, detect the torsion that the drill bit received, when surpassing the extreme, through the atmospheric pressure chamber, compress compression head, make the spring compressed, and under the drive of machine, the rotary rod can rotate to avoided the drill bit too big because of the atress, and by the twist -off, through the steel bushing, can avoid the rotary rod to damage because of high -speed friction, the life of extension fluted drill.
Description
Technical field
This utility model relates to a kind of fluted drill, is specifically related to a kind of anti-fracture high-speed steel straight shank twist drill.
Background technology
Fluted drill is to be relatively fixed the rotary cutting instrument with the circular hole of drilling workpiece of axis by it.Being similar to Flos Cannabis because of its chip pocket curl and gain the name, helicla flute has 2 grooves, 3 grooves or more multiple-grooved, but most commonly seen with 2 grooves.Fluted drill can be clamped on Handheld drill instrument manually, electrically or drilling machine, milling machine, lathe or even machining center use.Drill bit material is generally high-speed tool steel or hard alloy.
Standard fluted drill.Fluted drill is made up of shank, cervical region and working portion, and the diameter of fluted drill is limited by aperture, and helicla flute makes drill core thinner, and stiffness of twist drill is low；Only have two rib bands to guide, the easy deflection of axis in hole；Chisel edge makes centering difficulty, and axial drag increases, and drill bit easily swings.Therefore, the Form and position error of drilling bore hole is relatively.The rake face of fluted drill and rear knife face are all curved surfaces, and different along anterior angle, the relief angle of main cutting edge each point, the anterior angle of chisel edge reaches-55 °.Machining condition is very poor；Cutting speed is along the unreasonable distribution of cutting edge, and the point of a knife cutting speed that intensity is minimum is maximum, so serious wear.Therefore, the hole precision of processing is low.The full sword of drill bit main cutting edge participates in cutting, and on sword, the cutting speed of each point is the most unequal, easily forms chip curl, chip removal difficulty.Therefore chip and hole wall extrusion friction, usually scratch hole wall, and the surface roughness after processing is the lowest.
On standard fluted drill main cutting edge, the inside and outside difference of anterior angle numerical value at each point is the biggest.At drill bit outer rim, the anterior angle of main cutting edge is about+30 °；And close to unbearable place, anterior angle is about-30 °, nearly unbearable place anterior angle is too small, causes chip deformation big, and cutting resistance is big；And anterior angle is excessive at nearly outer rim, when processing hard material, edge strength often dislikes not enough.) front clearance of front cutting edge is null value at land, causes the friction between minor flank and hole wall to strengthen, cutting temperature rises, and the abrasion of drill bit outer rim corner is relatively big, and machined surface roughness deteriorates.
Owing to the processing of workpiece be unable to do without drill bit, and Flos Cannabis to do be most commonly seen drill bit, although existing drill bit hardness is high, not easy fracture, if but machine breaks down, drill chuck within the workpiece, owing to the drill bit of high-speed rotation now will not stop, therefore, will be twisted off, drill bit will be destroyed, and the processing of our workpiece also to terminate, affecting work efficiency, this is the problem that we are anxious to be resolved.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, it is provided that a kind of anti-fracture high-speed steel straight shank twist drill, can effectively solve produced problem in background technology.
In order to solve above-mentioned technical problem, this utility model provides following technical scheme:
A kind of anti-fracture high-speed steel straight shank twist drill of this utility model, including drilling rod, drill bit, pressure transducer, swingle, compression head, constrictor, spring, groove, atmospheric pressure cavity and steel bushing, described drilling rod one end connects described drill bit, the other end connects described swingle, inside is provided with described pressure transducer, outside is provided with described atmospheric pressure cavity, described swingle surface is cased with described steel bushing, outside is provided with described groove, described spring is connected bottom described groove inner wall, described spring top connects described constrictor, and described constrictor top connects described compression head.
As preferably a kind of technical scheme of this utility model, described swingle tail end is provided with pole cap, and and described swingle welding.
As preferably a kind of technical scheme of this utility model, described steel bushing is the described steel bushing using high speed steel material to make, and and described swingle welding.
As preferably a kind of technical scheme of this utility model, described compression head is arranged on inside described atmospheric pressure cavity, and and described constrictor bolt connection.
As preferably a kind of technical scheme of this utility model, described swingle and described drilling rod connecting contacting surface are set to shiny surface, and described swingle and described drilling rod are flexibly connected.
The beneficial effects of the utility model are: this kind of anti-fracture high-speed steel straight shank twist drill, pass through pressure transducer, it is possible to when fluted drill is stuck, the torsion that detection drill bit is subject to, when over-limit condition, passes through atmospheric pressure cavity, compression head, so that spring is compressed, under the drive of machine, swingle will rotate, thus avoid drill bit because of stress excessive, and twisted off, passed through steel bushing, swingle can be avoided to damage because of high-speed friction, extend the service life of fluted drill.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.In the accompanying drawings:
Fig. 1 is the anti-fracture high-speed steel straight shank twist drill structural representation of the one described in this utility model embodiment；
In figure: 1, drilling rod；2, drill bit；3, pressure transducer；4, swingle；5, pole cap；6, compression head；7, constrictor；8, spring；9, groove；10, atmospheric pressure cavity；11, steel bushing.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
Embodiment:
nullAs shown in Figure 1，A kind of anti-fracture high-speed steel straight shank twist drill of this utility model，Including drilling rod 1、Drill bit 2、Pressure transducer 3、Swingle 4、Compression 6、Constrictor 7、Spring 8、Groove 9、Atmospheric pressure cavity 10 and steel bushing 11，Described drilling rod 1 one end connects described drill bit 2，The other end connects described swingle 4，Inside is provided with described pressure transducer 3，Outside is provided with described atmospheric pressure cavity 10，Described swingle 4 surface is cased with described steel bushing 11，Outside is provided with described groove 9，Described spring 8 is connected bottom described groove 9 inwall，Described spring 8 top connects described constrictor 7，Described constrictor 7 top connects described compression 6，By pressure transducer 3，Can be when drill bit 2 be stuck，The torsion that detection drill bit 2 is subject to，When over-limit condition，By atmospheric pressure cavity 10，Compression 6，So that spring 8 is compressed，Under the drive of machine，Swingle 4 will rotate，Thus avoid drill bit 2 because of stress excessive，And twisted off，By steel bushing 11，Swingle 4 can be avoided to damage because of high-speed friction，Extend the service life of fluted drill.
Described swingle 4 tail end is provided with pole cap 5, and welds with described swingle 4, it is possible to avoids described swingle 4 when rotated, is thrown out of, hurts people.
Described steel bushing 11 is the described steel bushing 11 using high speed steel material to make, and weld with described swingle 4, described swingle 4 and described drilling rod 1 contact surface are set to shiny surface, and described swingle 4 and described drilling rod 1 are flexibly connected, it can be avoided that described swingle 4 is when rotating, damaged because rubbing with described drilling rod 1, thus extend the service life of drill bit.
It is internal that described compression 6 is arranged on described atmospheric pressure cavity 10, and connects with described constrictor 7 bolt, it is achieved described compression 6 is by compression, thus compresses described spring 8, so that described swingle 4 can smooth rotation.
Concrete, during use, fluted drill is arranged on processing machine, under the drive of machine, described drill bit 2 meeting high-speed rotation, sometimes due to it is unexpected, described drill bit 2 can block, in this case, described drill bit 2 is easy to be twisted off, we pass through described pressure transducer 3, detect described drill bit 2 when blocking, the torque magnitude being subject to, when torsion over-limit condition, described atmospheric pressure cavity 10 compresses described constrictor 7, and then compress described spring 8, the most described swingle 4 will be isolated, and rotate alone, so, described drill bit 2 is off all the time, would not be twisted off because of torsion.
This kind of anti-fracture high-speed steel straight shank twist drill, by pressure transducer 3, it is possible to when drill bit 2 is stuck, the torsion that detection drill bit 2 is subject to, when over-limit condition, by atmospheric pressure cavity 10, compression 6, so that spring 8 is compressed, under the drive of machine, swingle 4 will rotate, thus avoid drill bit 2 because of stress excessive, and twisted off, by steel bushing 11, swingle 4 can be avoided to damage because of high-speed friction, extend the service life of fluted drill.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (5)
1. an anti-fracture high-speed steel straight shank twist drill, including drilling rod (1), drill bit (2), pressure transducer (3), swingle (4), compression head (6), constrictor (7), spring (8), groove (9), atmospheric pressure cavity (10) and steel bushing (11), it is characterized in that, described drilling rod (1) one end connects described drill bit (2), the other end connects described swingle (4), inside is provided with described pressure transducer (3), outside is provided with described atmospheric pressure cavity (10), described swingle (4) surface is cased with described steel bushing (11), outside is provided with described groove (9), described spring (8) is connected bottom described groove (9) inwall, described spring (8) top connects described constrictor (7), described constrictor (7) top connects described compression head (6).
One the most according to claim 1 anti-fracture high-speed steel straight shank twist drill, it is characterised in that described swingle (4) tail end is provided with pole cap (5), and and described swingle (4) welding.
One the most according to claim 1 anti-fracture high-speed steel straight shank twist drill, it is characterised in that described steel bushing (11) is the described steel bushing (11) using high speed steel material to make, and and described swingle (4) welding.
One the most according to claim 1 anti-fracture high-speed steel straight shank twist drill, it is characterised in that it is internal that described compression head (6) is arranged on described atmospheric pressure cavity (10), and and described constrictor (7) bolt connection.
One the most according to claim 1 anti-fracture high-speed steel straight shank twist drill, it is characterised in that described swingle (4) and described drilling rod (1) contact surface are set to shiny surface, and described swingle (4) and described drilling rod (1) are flexibly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225005.9U CN205464485U (en) | 2016-03-23 | 2016-03-23 | High -speed steel straight shank fluted drill of preventing splitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225005.9U CN205464485U (en) | 2016-03-23 | 2016-03-23 | High -speed steel straight shank fluted drill of preventing splitting |
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| Publication Number | Publication Date |
|---|---|
| CN205464485U true CN205464485U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620225005.9U Active CN205464485U (en) | 2016-03-23 | 2016-03-23 | High -speed steel straight shank fluted drill of preventing splitting |
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| CN (1) | CN205464485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225273A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of anti-fracture high-speed steel straight shank twist drill |
-
2016
- 2016-03-23 CN CN201620225005.9U patent/CN205464485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225273A (en) * | 2016-03-23 | 2017-10-03 | 江苏天工工具有限公司 | A kind of anti-fracture high-speed steel straight shank twist drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181112 Address after: 212300 Zhenjiang City, Jiangsu Province, Danyang City, Danbei Town, Back Lane Revitalization Street North Patentee after: Jiangsu Tiangong Precision Tools Co., Ltd. Address before: 212300 Houxiang Town, Danyang City, Zhenjiang City, Jiangsu Province Patentee before: Jiangsu Tiangong Tool Co., Ltd. |
|
| TR01 | Transfer of patent right |