CN211248379U - Step hole cutter - Google Patents
Step hole cutter Download PDFInfo
- Publication number
- CN211248379U CN211248379U CN201922345143.7U CN201922345143U CN211248379U CN 211248379 U CN211248379 U CN 211248379U CN 201922345143 U CN201922345143 U CN 201922345143U CN 211248379 U CN211248379 U CN 211248379U
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- blade
- cutter
- cutter body
- cooling liquid
- stepped bore
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Abstract
The utility model provides a step hole cutter, which comprises a cutter body, wherein a step is arranged at one side end part of the cutter body, blade grooves are respectively arranged on each step surface of the step, a detachable blade which is radially limited by a positioning shaft and axially compressed by a compression arm is arranged at each blade groove, and the detachable blade at least comprises two cutting edges which can be rotatably and selectively positioned at the same cutting position relative to the positioning shaft; and a cooling liquid channel which can guide cooling liquid to the detachable blade is arranged in the cutter body.
Description
Technical Field
The utility model belongs to the technical field of the machine tooling instrument, concretely relates to but transposition step hole cutter.
Background
In the machining process, when the traditional inner hole multi-step machining is utilized, a plurality of alloy strips are welded on a cutter body, and a cutting edge is ground.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a step hole cutter that can greatly reduced blade use cost is provided.
The technical problem to be solved can be implemented by the following technical scheme.
A step hole cutter comprises a cutter body and is characterized in that a step is arranged at one side end of the cutter body, blade grooves are respectively arranged on each step surface of the step, a detachable blade which is radially limited by a positioning shaft and axially compressed by a compression arm is arranged at each blade groove, and the detachable blade at least comprises two cutting edges which can be rotatably and selectively positioned at the same cutting position relative to the positioning shaft; and a cooling liquid channel which can guide cooling liquid to the detachable blade is arranged in the cutter body.
As a further improvement of the present solution, a positioning screw screwable to the insert pocket forms one of the positioning shafts.
As a further improvement of the technical scheme, the pressing arm is a rotatable part, and a pressing screw is arranged at the rotating shaft of the pressing arm.
As a preferred embodiment of the present invention, the rotatable member is a rotatable platen, and one side end of the rotatable platen acts on the detachable blade.
As a further improvement of the present invention, the detachable insert has a prismatic shape, and a cutting edge is formed at a junction of each adjacent land and the upper or lower bottom surface.
Also as a preferred embodiment of the present invention, the detachable blade is in a triangular prism shape.
The indexable step hole cutter obtained by adopting the technical scheme uses the formed blade which does not need to be polished as a cutting edge, and further adopts the pressing plate and the screw to install the blade in the blade groove on the cutter body, so that the machining cutter for the inner hole step surface is realized. The integral service life of the indexable stepped hole cutter can be fully utilized, and the economic benefit of the indexable stepped hole cutter can be maximally exerted; further reducing the use cost of the blade.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
in the figure, 1-cutter body, 2-internal cooling hole, 3-internal cooling hole sealing bolt, 4-pressing plate screw, 5-pressing plate, 6-screw and 7-blade.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1 and 2, the utility model provides a step hole cutter, concrete structure is as follows:
the indexable stepped hole cutter comprises a cutter body 1 and four blades 7, wherein the 4 blades are detachably arranged in blade grooves at the end part of the cutter body. The 4 blades are the same in structural size and are in a triangular prism structure, 3 blades are arranged on the front side, 3 blades are arranged on the back side, and 6 blades are arranged on the front side and the back side (the upper bottom surface and the lower bottom surface of the triangular prism); the blade is formed at the joint of the adjacent facets of the triangular prism and the upper and lower bottom surfaces. Because the whole triangular prism can rotate along the positioning rotating shaft, one of the cutting edges on the front side and the back side can be selectively positioned at a set position.
When the blade or the blade is replaced, the pressing plate screw 4 is firstly loosened, the pressing plate 5 is removed, the screw 6 is loosened, the cutting edge of the blade 7 is rotated or the blade 7 is taken down to replace the blade.
The blade 7 is limited by the screw 6, and is prevented from moving along the radial direction, and further is prevented from moving along the axial direction by the pressing and positioning of the pressing plate 5. And the pressing plate 5 serving as the pressing arm can rotate along the positioning rotating shaft, when the cutting edge or the blade is replaced, the pressing arm can rotate away from the corresponding position, so that avoidance is realized, and the pressing of the pressing plate by the pressing plate screw 4 is further utilized to realize clamping and pressing of the pressing arm on the blade 7.
When the indexable stepped hole cutter works, the cooling liquid can be used as a cooling liquid transmission channel through the inner cooling hole 2 arranged in the cutter body, the cooling liquid is further directly sprayed on the blade 7, the high-pressure cooling liquid can constantly ensure that the cutting edge is in a lubricating state, a higher lubricating effect is achieved, scrap iron can be timely discharged, the phenomenon that the cutting edge extrudes the scrap iron to break the edge is avoided, and the service life of the cutting edge is prolonged.
The utility model provides an above-mentioned adoption transposition step hole cutter realizes installing a plurality of transposition blades on the cutter, and corresponding cutting edge wearing and tearing back in the course of working only needs pull down clamp plate and screw, and direct rotating blade uses the new cutting edge after changing.
The blade on each step has 6 cutting edges, greatly reduced blade's use cost. After the 6 cutting edges are completely used up, a new blade can be replaced, the whole service life of the indexable stepped hole cutter can be fully utilized, and the economic benefit of the indexable stepped hole cutter can be maximally exerted.
Claims (6)
1. A step hole cutter comprises a cutter body and is characterized in that a step is arranged at one side end of the cutter body, blade grooves are respectively formed in each step surface of the step, a detachable blade which is radially limited by a positioning shaft and axially compressed by a compression arm is arranged at each blade groove, and the detachable blade at least comprises two cutting edges which can be rotatably and selectively positioned at the same cutting position relative to the positioning shaft; and a cooling liquid channel which can guide cooling liquid to the detachable blade is arranged in the cutter body.
2. The stepped bore cutter according to claim 1, wherein one of said locating shafts is formed by a locating screw threadably received in said insert pocket.
3. The stepped bore tool of claim 1 or 2, wherein said hold down arm is a rotatable member having a hold down screw disposed at a rotational axis thereof.
4. The stepped bore cutter of claim 3, wherein said rotatable member is a rotatable platen, one side end of said rotatable platen acting on said removable insert.
5. The stepped bore cutter of claim 1, wherein said removable insert is prismatic in shape, and wherein each adjacent land meets either the upper or lower base surface to form one of said cutting edges.
6. The step bore tool of claim 5, wherein the removable insert is in the shape of a triangular prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345143.7U CN211248379U (en) | 2019-12-24 | 2019-12-24 | Step hole cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345143.7U CN211248379U (en) | 2019-12-24 | 2019-12-24 | Step hole cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211248379U true CN211248379U (en) | 2020-08-14 |
Family
ID=71988985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922345143.7U Active CN211248379U (en) | 2019-12-24 | 2019-12-24 | Step hole cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211248379U (en) |
-
2019
- 2019-12-24 CN CN201922345143.7U patent/CN211248379U/en active Active
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| GR01 | Patent grant |