CN207309028U - Self-locking fast replacing drill - Google Patents
Self-locking fast replacing drill Download PDFInfo
- Publication number
- CN207309028U CN207309028U CN201721304757.5U CN201721304757U CN207309028U CN 207309028 U CN207309028 U CN 207309028U CN 201721304757 U CN201721304757 U CN 201721304757U CN 207309028 U CN207309028 U CN 207309028U
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- spacing face
- cone
- cutter head
- cutter hub
- positive round
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Abstract
There are positive round cone in self-locking fast replacing drill, including cutter hub and cutter head, the rear end of cutter head, and diameter is gradually reduced positive round cone from back to front, and there is normal cone inner cavity in the front end of cutter hub, and positive round cone is interference fitted with normal cone inner cavity；There are cross spacing face A and longitudinal spacing face A on cutter head；There are cross spacing face B and longitudinal spacing face B on cutter hub；There is chip space B on cutter hub, there is chip space A on cutter head；When cutter head is installed in place in cutter hub, longitudinal spacing face A is abutted with longitudinal spacing face B, and cross spacing face A is abutted with cross spacing face B, and chip space A and chip space B are continuous.The utility model fast changeable cutter head, efficient, cutter hub is used multiple times, cost-effective；Rear blade is screwed in be interference fitted with cutter hub, drill bit can be subject to the power counterclockwise that a work piece is given in drilling, plus the effect in cross spacing face and longitudinal spacing face, cutter head is bonded all the time with cutter hub, reach self-locking clamping, will not fall off or loosen all the time in drilling.
Description
Technical field
A kind of metal cutting process cutter is the utility model is related to, particularly drill bit.
Background technology
Existing drill bit, cutter head and cutter hub are an entirety, it is necessary to which whole drill bit is changed after cutter head is passivated, increase
The cost of enterprise.
In addition, with the fast development of field of machining, efficient, high life, high-precision cutter are required increasingly
Sternly, it is a big development trend that high-speed steel tool is substituted by hard alloy cutter, but due to hard alloy cutter toughness compared with
Difference, limits its application in some manufacture fields (especially tapping processing).
Utility model content
The utility model aims to provide self-locking fast replacing drill, and cutter head is connected with cutter hub using clamping mode, can quickly more
Tool changing head, cutter hub can be used for multiple times.
In order to achieve the above object, the technical solution adopted in the utility model：
There are the positive round cone being coaxially disposed, normal cone in self-locking fast replacing drill, including cutter hub and cutter head, the rear end of the cutter head
Diameter is gradually reduced body from back to front, and there is a normal cone inner cavity being coaxially disposed in the front end of the cutter hub, the positive round cone with just
Circular cone inner cavity is interference fitted；
There is limiting section A on the cutter head, there is the limiting section B being adapted to limiting section A, limiting section A to include laterally limiting on cutter hub
Plane A and longitudinal spacing face A, cross spacing face A are flushed with the front end face of positive round cone, the rear end of longitudinal spacing face A and transverse direction
Confined planes A intersects vertically；The limiting section B includes cross spacing face B and longitudinal spacing face B；There is the helix circular on cutter hub
Chip space B, has the circular chip space A of helix on cutter head；
Limiting section A and limiting section B has two, and two limiting section A are centered on the axis of cutter head between circumferencial direction etc.
Every setting, two limiting section B are set at equal intervals centered on the axis of cutter hub in circumferencial direction；Chip space B has with chip space A
Two；
When cutter head is installed in place in cutter hub, 1 longitudinal spacing face A has and is only abutted with 1 longitudinal spacing face B, 1
Cross spacing face A has and is only abutted with 1 cross spacing face B, and a chip space A has and only continuous with a chip space B.
Further, two chip space A form four seamed edges in positive round cone, respectively along the radial direction of four seamed edges
A grinding part forms four inclined-planes.
Wherein, positive round cone is identical with the taper of normal cone inner cavity.
Further, the cone angle of positive round cone and normal cone inner cavity is 6 °.
It is further preferred that positive round cone and the fit tolerance of normal cone inner cavity are 0.002-0.005.
Further, a diameter of 9.455mm of positive round cone front end, the length of positive round cone is 8mm；Normal cone inner cavity
Length is 8mm, a diameter of 9.45mm of normal cone inner cavity front end.
Further, cutter hub material is steel alloy, and the material of cutter head is hard alloy.
Further, there is the cylinder being coaxially disposed in the rear end of the positive round cone, and normal cone intracavity posterior end has and cylinder
The round cavity of body adaptation.Cylinder can play the role of positioning.
Compared with prior art, the utility model has the following advantages：
Cutter head is connected with cutter hub using clamping mode in the utility model, it is only necessary to which the cutter head for using post-passivation is quick
Changing can continue to process, and cutter hub can be used for multiple times, and efficiency is higher；Screw in rear blade positive round cone by with cutter hub just
Circular cone inner cavity surface closely touch, and forms interference fit, and it is counterclockwise to be subject to that a work piece gives in drilling for drill bit
Power, plus the effect in cross spacing face and longitudinal spacing face, makes cutter head be bonded all the time with cutter hub, reaches self-locking clamping, cutter head with
Coordinate between cutter hub closely, will not fall off or loosen all the time in drilling, and clamping mode makes the replacement rapid and convenient of cutter head.
Brief description of the drawings
Fig. 1 is the structure diagram of cutter head in the utility model；
Fig. 2 is the A of Fig. 1 to schematic diagram；
Fig. 3 is the B of Fig. 2 to schematic diagram；
Fig. 4 is the structure diagram of cutter hub in the utility model；
Fig. 5 is the reference chart of cutter head；
Fig. 6 is with reference to figure one；
Fig. 7 is with reference to figure two；
Fig. 8 is with reference to figure three；
Fig. 9 is with reference to figure four；
Figure 10 is with reference to figure five；
Figure 11 is with reference to figure six；
Figure 12 is with reference to figure seven；
Figure 13 is with reference to figure eight；
Figure 14 is with reference to figure nine；
In figure：1- cutter hubs, 2- cutter heads, 3- positive round cones, 4- normal cones inner cavity, 5- cross spacings face A, 6- longitudinal spacings face
A, 7- cross spacing face B, 8- longitudinal spacings face B, 9- chip spaces B, 10- chip space A, 11- seamed edge, 12- inclined-planes, 13- cylinders,
14- round cavities.
Embodiment
In order to which the technical solution of the utility model and advantage is more clearly understood, below in conjunction with attached drawing to the utility model
It is further elaborated.
As shown in Figs 1-4, self-locking fast replacing drill disclosed in the utility model, including cutter hub 1 and cutter head 2,1 material of cutter hub are
Steel alloy, the material of cutter head 2 is hard alloy.There is a positive round cone 3 being coaxially disposed in the rear end of cutter head 2, and positive round cone 3 is from rear past
Preceding diameter is gradually reduced, and there are the normal cone inner cavity 4 being coaxially disposed, positive round cone 3 and 4 interference of normal cone inner cavity in the front end of cutter hub 1
Coordinate.There is the cylinder 13 being coaxially disposed in the rear end of positive round cone 3, and there is the circle being adapted to cylinder 13 in 4 rear end of normal cone inner cavity
Shape inner cavity 14.Cylinder 13 can play the role of positioning.
Wherein, positive round cone 3 is identical with the taper of normal cone inner cavity 4, and the cone angle of positive round cone 3 and normal cone inner cavity 4 is equal
For 6 °.Positive round cone 3 and the fit tolerance of normal cone inner cavity 4 are 0.002-0.005, for example, 3 front end of positive round cone is a diameter of
9.455mm, the length of positive round cone 3 is 8mm；The length of normal cone inner cavity 4 is 8mm, 4 front end of normal cone inner cavity it is a diameter of
9.45mm。
There is limiting section A on cutter head 2, there is the limiting section B being adapted to limiting section A, limiting section A to include cross spacing on cutter hub 1
Face A5 and longitudinal spacing face A6, cross spacing face A5 are flushed with the front end face of positive round cone 3, rear end and the horizontal stroke of longitudinal spacing face A6
Intersect vertically to confined planes A5；Limiting section B includes cross spacing face B7 and longitudinal spacing face B8；There is helix to surround on cutter hub 1
Chip space B9, have the circular chip space A10 of helix on cutter head 2.
As shown in Figure 6,7, limiting section A and limiting section B have two, two limiting section A centered on the axis of cutter head 2
Circumferencial direction is set at equal intervals, and two limiting section B are set at equal intervals centered on the axis of cutter hub 1 in circumferencial direction；Chip space
B9 and chip space A10 has two.
As shown in Fig. 1,2,3,5,6, two chip space A10 form four seamed edges 11 in positive round cone 3, respectively along four
A radial direction grinding part for seamed edge 11 forms four inclined-planes 12, reduces when being put into cutter head 2 in positive round cone 3 and normal cone
The size of the contact position at 4 edge of chamber.It is as shown in figure 9, using the room of chip space B and 4 junction of normal cone inner cavity that cutter head 2 is first
It is put into cutter hub 1, four inclined-planes 12 cause cutter head 2 to have certain gap when cutter hub 1 is put into, and will not block and fail to lay down.
At the same time when rotary cutter 2, the front end of the inner cavity of normal cone before this 4 of interference fit is formed, with the increase of rotation angle,
Mating surface can be more and more big.
As shown in Fig. 8,10,11, when rotating clockwise cutter head and screwing in, the originally portion of conical cavity and cone contact squeeze
Divide sub-fraction only in circle, cutter head can gently be screwed in using knife rest is unloaded, cutter head and the part of cutter hub extrusion fit
More and more, the face of cooperation is more and more big, to the last coordinates in place, and inclined-plane 12 also plays transitional function, screw-in is more held
Easily.
As shown in Figure 12,13,14, when cutter head 2 is installed in place in cutter hub 1,1 longitudinal spacing face A6 has and only with 1
A longitudinal spacing face B8 is abutted, and 1 cross spacing face A5 has and only abutted with 1 cross spacing face B7, and a chip space A10 has
And it is only continuous with a chip space B9, at this time, each face fits closely, without gap.In longitudinal spacing face A6 and longitudinal spacing
Under the action of the B8 of face, cutter head 2 obtains position-limiting action with cutter hub 1 in circumferencial direction；Cross spacing face A5 and cross spacing face B7's
Under effect, cutter head 2 obtains position-limiting action in the axial direction with cutter hub 1.
As shown in Figure 13,14, cutter head can be constantly subjected to the component of an axial direction, cutter head is fitted closely with cutter hub.Work as knife
After first 2 are screwed into place, due to the extruding of interference fit, cutter head can be acted on be subject to F1 and F2, due to taper, F1 and F2
The component F3, F3 for producing an axial direction cause cutter head 2 to be fitted closely with cutter hub 1, reach locking purpose；When drilling, knife
Head rotates clockwise, and cutting edge will be subject to a work piece to give its power counterclockwise, plus cross spacing face and indulges
Effect to confined planes so that cutter head is firmly fitted on cutter hub, reaches self-locking clamping, drilling when will not fall off all the time or
Loosen, coordinate closely between cutter head and cutter hub, and clamping mode makes the replacement rapid and convenient of cutter head, and efficiency is higher.In use,
Only need quickly to change the cutter head using post-passivation to continue to process, cutter hub can be used for multiple times, cost-effective.
Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those skilled in the art can make various corresponding changes and deformation, but these phases according to the utility model
The change and deformation answered should all belong to the scope of the claims appended by the utility model.
Claims (8)
1. self-locking fast replacing drill, it is characterised in that：Including cutter hub (1) and cutter head (2), the rear end of the cutter head (2), which has, coaxially to be set
The positive round cone (3) put, diameter is gradually reduced positive round cone (3) from back to front, and the front end of the cutter hub (1) has what is be coaxially disposed
Normal cone inner cavity (4), the positive round cone (3) are interference fitted with normal cone inner cavity (4)；
There is limiting section A on the cutter head (2), there is the limiting section B being adapted to limiting section A, limiting section A to include laterally on cutter hub (1)
Confined planes A (5) and longitudinal spacing face A (6), cross spacing face A (5) are flushed with the front end face of positive round cone (3), longitudinal spacing face
The rear end of A (6) intersects vertically with cross spacing face A (5)；The limiting section B includes cross spacing face B (7) and longitudinal spacing face B
(8)；There is the chip space B (9) that helix is circular on cutter hub (1), there is the circular chip space A (10) of helix on cutter head (2)；
Limiting section A and limiting section B have two, two limiting section A centered on the axis of cutter head (2) in circumferencial direction at equal intervals
Set, two limiting section B are set at equal intervals centered on the axis of cutter hub (1) in circumferencial direction；Chip space B (9) and chip space A
(10) there are two；
When cutter head (2) is installed in place in cutter hub (1), 1 longitudinal spacing face A (6) have and only with 1 longitudinal spacing face B (8)
Abut, 1 cross spacing face A (5) has and only abutted with 1 cross spacing face B (7), and a chip space A (10) has and only with one
Bar chip space B (9) is continuous.
2. self-locking fast replacing drill according to claim 1, it is characterised in that：Two chip space A (10) are in positive round cone (3)
Four seamed edges (11) of upper formation, form four inclined-planes (12) along a radial direction grinding part for four seamed edges (11) respectively.
3. self-locking fast replacing drill according to claim 1, it is characterised in that：Positive round cone (3) and normal cone inner cavity (4)
Taper is identical.
4. self-locking fast replacing drill according to claim 3, it is characterised in that：Positive round cone (3) and normal cone inner cavity (4)
Cone angle is 6 °.
5. according to the self-locking fast replacing drill described in claim 1,3 or 4, it is characterised in that：Positive round cone (3) and normal cone inner cavity
(4) fit tolerance is 0.002-0.005.
6. self-locking fast replacing drill according to claim 1, it is characterised in that：Positive round cone (3) front end it is a diameter of
9.455mm, the length of positive round cone (3) is 8mm；The length of normal cone inner cavity (4) is 8mm, normal cone inner cavity (4) front end it is straight
Footpath is 9.45mm.
7. self-locking fast replacing drill according to claim 1, it is characterised in that：Cutter hub (1) material is steel alloy, cutter head (2)
Material be hard alloy.
8. self-locking fast replacing drill according to claim 1, it is characterised in that：The rear end of the positive round cone (3) has coaxially
There are the round cavity (14) being adapted to cylinder (13) in the cylinder (13) of setting, normal cone inner cavity (4) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304757.5U CN207309028U (en) | 2017-09-30 | 2017-09-30 | Self-locking fast replacing drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304757.5U CN207309028U (en) | 2017-09-30 | 2017-09-30 | Self-locking fast replacing drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207309028U true CN207309028U (en) | 2018-05-04 |
Family
ID=62429756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721304757.5U Active CN207309028U (en) | 2017-09-30 | 2017-09-30 | Self-locking fast replacing drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207309028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590518A (en) * | 2017-09-30 | 2019-04-09 | 成都成量工具集团有限公司 | Self-locking fast replacing drill |
| CN109590518B (en) * | 2017-09-30 | 2024-06-21 | 成都新成量工具有限公司 | Self-locking quick-change drill |
-
2017
- 2017-09-30 CN CN201721304757.5U patent/CN207309028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109590518A (en) * | 2017-09-30 | 2019-04-09 | 成都成量工具集团有限公司 | Self-locking fast replacing drill |
| CN109590518B (en) * | 2017-09-30 | 2024-06-21 | 成都新成量工具有限公司 | Self-locking quick-change drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200106 Address after: No. 199, Section 1, South Ring Road, Sanhe street, Xindu District, Chengdu, Sichuan 610000 Patentee after: Chengdu Xincheng Tools Co., Ltd Address before: 610000, No. 199, south section of Ring Road, Xindu District, Sichuan, Chengdu Patentee before: Chengdu Chengliang Tools Group Co., Ltd. |