CN209094627U - A kind of interchangeable bit of S type spiral chit drill point - Google Patents
A kind of interchangeable bit of S type spiral chit drill point Download PDFInfo
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- CN209094627U CN209094627U CN201821150269.8U CN201821150269U CN209094627U CN 209094627 U CN209094627 U CN 209094627U CN 201821150269 U CN201821150269 U CN 201821150269U CN 209094627 U CN209094627 U CN 209094627U
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Abstract
The utility model provides a kind of interchangeable bit of S type spiral chit drill point, including matrix, blade, fastener；Described matrix be it is cylindric, outer wall be equipped with two groove for cuttings, the groove for cuttings with the axisymmetrical of matrix, extend spirally be set to matrix outer wall；Described matrix top is equipped with clamping part, and the clamping part is used for the shaft of connecting machine tool；The clamping part includes straight section and annular groove on ring wall；The bottom of described matrix is equipped with the card slot being fixedly mounted for blade, and card slot two sides are equipped with mounting hole；Blade is equipped among card slot, is connected and fixed by fastener；The card slot is V-shaped groove；The blade is sheet, along its middle line central symmetry, and middle part is equipped with installation through-hole, and front center is equipped with the main sword of cutting of S-shaped, and the side of the main sword of cutting is equipped with back, enhances edge strength, and the other side is equipped with bit-withdrawing slot, draws bits slot.A kind of interchangeable bit of S type spiral chit drill point of the utility model, precision height, long service life.
Description
Technical field
The utility model relates to machine tool technical fields, and in particular to a kind of interchangeable bit of S type spiral chit drill point.
Background technique
Currently, being used for the machine tool drill of hole machined, commonly exist poor machining accuracy, tipping, fracture, thermic load height etc. is asked
Topic；Tipping caused by convenient for chip removal, to avoid because of exclusion bits before apex point, reduces the vibration of drill bit work in-process, improves hole
Circularity, cylindricity, roughness are processed, the application provides a kind of interchangeable bit of S type spiral chit drill point, to solve above-mentioned ask
Topic.
Summary of the invention
The purpose of the utility model is to provide a kind of interchangeable bits of S type spiral chit drill point, rotate essence with superelevation
Degree, laterally shake is small, and chip removal is rapid, can effectively prevent broken drill；For the drill bit during rotary cutting, frictional resistance is small, because
This can equally guarantee bit life with lesser thermic load.
The purpose of this utility model is realized by following proposal.
A kind of interchangeable bit of S type spiral chit drill point, including matrix, blade (S type spiral chit drill point), fastener；
Described matrix be it is cylindric, outer wall be equipped with two groove for cuttings, the groove for cuttings with the axisymmetrical of matrix,
What is extended spirally is set to matrix outer wall；Described matrix top is equipped with clamping part, and the clamping part is used for the shaft of connecting machine tool；Institute
Stating clamping part includes straight section and the annular groove on ring wall；The bottom of described matrix is equipped with the card slot being fixedly mounted for blade,
Card slot two sides are equipped with mounting hole；Blade is equipped among card slot, is connected and fixed by fastener；The card slot is V-shaped groove；
Handle part bottom end is extended at the top of the groove for cuttings, bottom extends to matrix bottom end；
The blade is sheet, along its middle line central symmetry, and middle part is equipped with installation through-hole, and front center is equipped with S-shaped
The main sword of cutting, the main sword central part of the cutting be in front end, from middle part to two sides along the tapered drilling area of formation V-arrangement, with
Middle part is endpoint, and cutting angle of the two sides of main sword between is 146 ° ~ 150 °；The side of the main sword of cutting is equipped with ridge
Back, enhances edge strength, and the other side is equipped with bit-withdrawing slot, draws bits slot；The bit-withdrawing slot depth is less than and draws bits groove depth；
The bit-withdrawing slot is a groove, and inside, which is connected smoothly, cuts the one side wall of main sword, the connection of one side edge
Draw bits slot；
The bits slot that draws is arc groove at one on blade side wall, and main sword is cut in the upper end connection, and right end connection is moved back
Consider slot to be worth doing, bottom end connects groove for cuttings, and outer side edges make outer side edges along being directed toward on the inside of arc groove along indent, so as to by chip
It guides to groove for cuttings；Chamfered end is guided to connect support lugn end.
The two sides of the blade are along equipped with guidance chamfering；Part in described matrix between two groove for cuttings is rear table
Face, the edge of the rear surface are equipped with the support lugn extended spirally；In deep hole processing, the side in support lugn fitting processing hole
Wall Linear Rotation ensure that concentricity when drill bit rotation, reduce transverse shakiness, and reduces drill bit side wall and processing hole side
The contact surface and point of wall touch, and ensure that running accuracy and reduction heat meet, improve bit life.
Preferably, it can be designed as cutting pair sword on the inside of the support lugn, the inside of the support lugn, which is equipped with, cuts
Cut secondary sword.
Preferably, the fastener includes soket head cap screw and spacer pin, and the soket head cap screw passes through the peace on matrix
Fill hole, the installation through-hole on blade, the threaded connection fixation of the mounting hole on matrix；Soket head cap screw is limited again by spacer pin
Fixed, the bottom end of matrix is equipped with pin hole, and pin hole is connected to mounting hole, and pin passes through pin hole and supports patch soket head cap screw.
Preferably, consider that stress and installation are stablized, the tail end of the blade is V-arrangement trailing edge, and the middle part of V-arrangement trailing edge is equipped with interior
Recessed arc groove ending.If (being finished up with tip, stress concentration is easily burst apart；If fillet smoothly finishes up, what when assembly was bonded with it
Card slot inconvenience processing).The angle that the V-shaped groove is is 100 ° -120 °.
The utility model has the following beneficial effects:
It is with superelevation running accuracy, and laterally shake is small, and chip removal is rapid, can effectively prevent broken drill；The drill bit is being revolved
During turning cutting, frictional resistance is small, therefore has lesser thermic load, can equally guarantee bit life.
Detailed description of the invention
Fig. 1 is the structural decomposition diagram of the interchangeable bit of the S type spiral chit drill point of the utility model.
Fig. 2 is the partial enlargement sign picture of the bottom end Fig. 1.
Fig. 3 is the bottom view of blade.
Fig. 4 is the structural schematic diagram of the interchangeable bit of the S type spiral chit drill point of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Figures 1 to 4, a kind of interchangeable bit of S type spiral chit drill point, including matrix 1, blade 2(S type spiral
Chit drill point), fastener 3；
Described matrix 1 be it is cylindric, outer wall be equipped with two groove for cuttings 11, the groove for cuttings 11 is with the axis of matrix 1
Line is symmetrical, extend spirally be set to 1 outer wall of matrix；1 top of described matrix is equipped with clamping part 12, and the clamping part 12 is for connecting
The shaft of lathe；The clamping part 12 includes straight section and annular groove on ring wall；The bottom of described matrix 1, which is equipped with, is used for blade
2 card slots 13 being fixedly mounted, 13 two sides of card slot are equipped with mounting hole；Blade 2 is equipped among card slot 13, is connected by fastener 3 solid
It is fixed；The card slot 13 is V-shaped groove；
Handle part bottom end is extended at the top of the groove for cuttings 11, bottom extends to 1 bottom end of matrix；
The blade 2 is sheet, along its middle line central symmetry, and middle part is equipped with installation through-hole, and front center is equipped with S-shaped
The main sword 21 of cutting, main 21 central part of sword of the cutting be in front end, from middle part to two sides along the tapered brill of formation V-arrangement
Face, using middle part as endpoint, cutting angle of the two sides of main sword 21 between is 146 ° ~ 150 °；The one of the main sword 21 of cutting
Side is equipped with back 22, enhances edge strength, and the other side is equipped with bit-withdrawing slot 23, draws bits slot 24；23 depth of bit-withdrawing slot is less than
Draw bits 24 depth of slot；
The bit-withdrawing slot 23 is a groove, and inside, which is connected smoothly, cuts the one side wall of main sword 21, one side edge
Bits slot 24 is drawn in connection；
For the bits slot 24 that draws for arc groove 26 at one on 2 side wall of blade, main sword 21, right end are cut in the upper end connection
Bit-withdrawing slot 23 is connected, bottom end connects groove for cuttings 11, and outer side edges make outer side edges along direction arc groove 26 along indent
Side, to guide chip to groove for cuttings 11；25 end of chamfering is guided to connect 14 end of support lugn.
The two sides of the blade 2 are along equipped with guidance chamfering 25；Part in described matrix between two groove for cuttings 11
For rear surface 13, the edge of the rear surface 13 is equipped with the support lugn 14 extended spirally；In deep hole processing, support lugn 14
The side wall Linear Rotation in fitting processing hole ensure that concentricity when drill bit rotation, reduce transverse shakiness, and reduces drill bit
Side wall is touched with the contact surface of processing hole side wall and point, be ensure that running accuracy and reduction heat meet, is improved bit life.
Preferably, the fastener 3 includes soket head cap screw 31 and spacer pin, and the soket head cap screw 31 passes through matrix 1
On mounting hole, the installation through-hole on blade 2, mounting hole on matrix 1 be threadedly coupled and fix；Pass through spacer pin internal hexagonal again
The limit of screw 31 is fixed, and the bottom end of matrix 1 is equipped with pin hole 15, and pin hole 15 is connected to mounting hole, and pin passes through pin hole 15 and supports
Paste soket head cap screw 31.
Preferably, consider that stress and installation are stablized, the tail end of the blade 2 is V-arrangement trailing edge 27, the middle part of V-arrangement trailing edge 27
Arc groove 26 equipped with indent finishes up.If (being finished up with tip, stress concentration is easily burst apart；If fillet smoothly finishes up, when assembly with
Its inconvenient processing of card slot 13 being bonded).The angle that the V-shaped groove is is 100 ° -120 °.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (8)
1. a kind of interchangeable bit of S type spiral chit drill point, including matrix, blade, fastener；
Described matrix be it is cylindric, outer wall be equipped with two groove for cuttings, the groove for cuttings is with the axisymmetrical of matrix, spiral
What is extended is set to matrix outer wall；Described matrix top is equipped with clamping part, and the clamping part is used for the shaft of connecting machine tool；The folder
The portion of holding includes straight section and annular groove on ring wall；The bottom of described matrix is equipped with the card slot being fixedly mounted for blade, card slot
Two sides are equipped with mounting hole；Blade is equipped among card slot, is connected and fixed by fastener；It is characterized by:
The card slot is V-shaped groove；
Handle part bottom end is extended at the top of the groove for cuttings, bottom extends to matrix bottom end；
The blade is sheet, along its middle line central symmetry, and middle part is equipped with installation through-hole, and front center is equipped with cutting for S-shaped
Main sword is cut, the main sword central part of cutting is in front end, from middle part to two sides along the tapered drilling area for forming V-arrangement；It is described to cut
The side for cutting main sword is equipped with back, enhances edge strength, and the other side is equipped with bit-withdrawing slot, draws bits slot；The bit-withdrawing slot depth is small
In drawing bits groove depth；
The bit-withdrawing slot is a groove, and inside, which is connected smoothly, cuts the one side wall of main sword, and bits are drawn in edge connection in one side
Slot；
The bits slot that draws is arc groove at one on blade side wall, and main sword is cut in the upper end connection, and right end connects bit-withdrawing slot,
Its bottom end connects groove for cuttings.
2. the interchangeable bit of S type spiral chit drill point as described in claim 1, it is characterised in that: the two sides of the blade
Chamfering is guided along being equipped with；Part in described matrix between two groove for cuttings is rear surface, and the edge of the rear surface is equipped with
The support lugn extended spirally；Chamfered end is guided to connect support lugn end.
3. the interchangeable bit of S type spiral chit drill point as claimed in claim 2, it is characterised in that: the outside for drawing bits slot
Edge indent makes outer side edges on the inside of direction arc groove.
4. the interchangeable bit of S type spiral chit drill point as claimed in claim 3, it is characterised in that: the fastener includes interior
Hex screw and spacer pin, the soket head cap screw pass through mounting hole, the installation through-hole on blade, the peace on matrix on matrix
It fills hole and is threadedly coupled fixation；Soket head cap screw is limited again by spacer pin and is fixed, the bottom end of matrix is equipped with pin hole, pin hole
It is connected to mounting hole, pin passes through pin hole and supports patch soket head cap screw.
5. the interchangeable bit of the S type spiral chit drill point as described in any in claim 1-4, it is characterised in that: to cut master
It is divided into two in the middle part of sword for endpoint, it is 146 ° ~ 150 ° that the angle between main sword is cut in two sides.
6. the interchangeable bit of S type spiral chit drill point as claimed in claim 5, it is characterised in that: the tail end of the blade is V
Shape trailing edge, the arc groove that the middle part of V-arrangement trailing edge is equipped with indent finish up.
7. the interchangeable bit of S type spiral chit drill point as claimed in claim 6, it is characterised in that: the angle of the V-arrangement trailing edge
It is 100 ° -120 °.
8. the interchangeable bit of the S type spiral chit drill point as described in any in claim 2-4, it is characterised in that: the support
The inside of flange is equipped with cutting pair sword.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821150269.8U CN209094627U (en) | 2018-07-20 | 2018-07-20 | A kind of interchangeable bit of S type spiral chit drill point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821150269.8U CN209094627U (en) | 2018-07-20 | 2018-07-20 | A kind of interchangeable bit of S type spiral chit drill point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209094627U true CN209094627U (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821150269.8U Active CN209094627U (en) | 2018-07-20 | 2018-07-20 | A kind of interchangeable bit of S type spiral chit drill point |
Country Status (1)
| Country | Link |
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| CN (1) | CN209094627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637325A (en) * | 2018-07-20 | 2018-10-12 | 台州华达工量具制造有限公司 | A kind of interchangeable bit of S types spiral chit drill point |
-
2018
- 2018-07-20 CN CN201821150269.8U patent/CN209094627U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108637325A (en) * | 2018-07-20 | 2018-10-12 | 台州华达工量具制造有限公司 | A kind of interchangeable bit of S types spiral chit drill point |
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