CN207930079U - A kind of crankshaft center spot facing cutter - Google Patents
A kind of crankshaft center spot facing cutter Download PDFInfo
- Publication number
- CN207930079U CN207930079U CN201820244391.5U CN201820244391U CN207930079U CN 207930079 U CN207930079 U CN 207930079U CN 201820244391 U CN201820244391 U CN 201820244391U CN 207930079 U CN207930079 U CN 207930079U
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- China
- Prior art keywords
- blade
- boss
- spot facing
- fixedly connected
- crankshaft center
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Abstract
The utility model discloses a kind of crankshaft center spot facing cutter, including knife bar and round boss, the boss is located at the knife bar top, the knife bar is fixedly connected or is integrally formed with the boss, the boss upper end is opened up there are two symmetrical recess portion, two recess sidewalls are detachable to be fixedly connected with blade, two blade center are symmetrical, the blade direction of two blades is opposite and parallel with the outer wall of boss surface, and the blade is raised in the outer wall of boss surface.A kind of crankshaft center spot facing cutter of the utility model.
Description
Technical field
The utility model is related to cutter fields, more particularly to a kind of crankshaft center spot facing cutter.
Background technology
Engine crankshaft centre bore high precision machining, circularity require to be 0.02.Centre bore circularity, which crosses conference, influences follow-up work
The positioning of sequence, and then influence machining accuracy.Crankshaft oil seal is ground by positioning datum of centre bore, is repeatedly gone out in production process
The problem of existing centre bore circularity over tolerance causes oil sealing circularity over tolerance.
Existing engine crankshaft center hole machined is mainly realized by using Single-blade reamer, as shown in Figure 1, single
Knife reamer is by knife bar 01 and the blade being arranged on knife bar 02.But come with some shortcomings during use, single cutting tool processing
When unbalance stress, cause central hole of the crankshaft circularity big or even overproof.
Invention content
The utility model is completed to solve in the prior art insufficient, and the purpose of this utility model is to provide one
Kind crankshaft center spot facing cutter, its advantage is that.
A kind of crankshaft center spot facing cutter of the utility model, including knife bar and round boss, the boss are located at the knife
Bar top, the knife bar are fixedly connected or are integrally formed with the boss, and the boss upper end is opened up there are two symmetrical
Recess portion, two recess sidewalls are detachable to be fixedly connected with blade, and two blade center are symmetrical, two institutes
The blade direction for stating blade is opposite and parallel with the outer wall of boss surface, and the blade is raised in the outer wall of boss table
Face.
A kind of crankshaft center spot facing cutter of the utility model can also be：
Cutter spacing portion is offered on the recess portion, the blade is detachable to be fixedly connected on the cutter spacing portion.
Two blades are bolted to connection in the cutter spacing portion.
The blade top is fixedly connected with the first knife face.
The blade lower part is fixedly connected with the second knife face.
A kind of crankshaft center spot facing cutter of the utility model, including knife bar and round boss, the boss are located at the knife
Bar top, the knife bar are fixedly connected or are integrally formed with the boss, and the boss upper end is opened up there are two symmetrical
Recess portion, two recess sidewalls are detachable to be fixedly connected with blade, and two blade center are symmetrical, two institutes
The blade direction for stating blade is opposite and parallel with the outer wall of boss surface, and the blade is raised in the outer wall of boss table
Face.In this way, recess portion is symmetrical and is in the arc tilted down on boss, recess portion provides installation point for blade installation, recessed
Subordinate end is conducive to clast discharge；Boss top is in plane, can play the role of avoiding interference with；Blade can be fixed on recess portion
The connection with recess sidewalls can also be released on side wall；Two its blade directions of blade are opposite and central symmetry is distributed；When two
When blade works at the same time, cutter stress equalization, centre bore circularity small, after processing of beating are stablized.Blade is flat with outer wall of boss
It exercises to match with central hole of the crankshaft.By the way that two blades and central symmetry distribution is arranged so that cutter stress equalization, stabilization
Property it is good, solve the problems, such as because centre bore circularity caused by cutter unbalance stress fluctuate it is big and lead to the overproof problem of precision, in
Heart hole circularity process capability is obviously improved.By setting, blade is detachable is fixedly connected on recess portion, and not only blade is easy peace
Assembly and disassembly, and also improve cutter overhaul efficiency.A kind of crankshaft center spot facing cutter of the utility model, relative to existing skill
It is this have the advantage that for art：Reduce the overproof problem of precision caused by cutter discontinuity equalization, tool sharpening more stablize with
And the fluctuation of centre bore circularity is small.Even more preferably, multiple recess portions can be opened up on boss, recess portion can correspond to distribution blade, can be with
It is arranged accordingly according to actual needs.
Description of the drawings
The existing crankshaft center aperture knife tool schematic diagrames of Fig. 1.
A kind of stereoscopic schematic diagram of crankshaft center spot facing cutter of Fig. 2 the utility model.
A kind of schematic top plan view of crankshaft center spot facing cutter of Fig. 3 the utility model.
Figure number explanation
1, knife bar；2, boss；21, recess portion；3, blade；31, blade；32, the first knife face；33, the second knife face.
Specific implementation mode
Fig. 2 to Fig. 3 below in conjunction with the accompanying drawings makees further specifically a kind of crankshaft center spot facing cutter of the utility model
It is bright.
A kind of crankshaft center spot facing cutter of the utility model please refers to Fig.2 each figure related to Fig. 3, including knife bar 1 and circle
Boss 2, the boss 2 are located at 1 top of the knife bar, and the knife bar 1 is fixedly connected or is integrally formed with the boss 2, described
2 upper end of boss is opened up there are two symmetrical recess portion 21, and two 21 side walls of the recess portion are detachable to be fixedly connected with knife
31 direction of blade of piece 3, the distribution of two 3 central symmetries of the blade, two blades 3 it is opposite and with outside the boss 2
Wall surface is parallel, and the blade 31 is raised in 2 outer wall surface of the boss.In this way, recess portion 21 is symmetrical and is on boss 2
The arc tilted down, recess portion 21 provide installation point for the installation of blade 3, and 21 lower end of recess portion is conducive to clast discharge；On boss 2
Portion is in plane, can play the role of avoiding interference with；Blade 3 can be fixed on 21 side wall of recess portion and can also release and recess portion 21
The connection of side wall；Two its 31 directions of blade of blade 3 are opposite and central symmetry is distributed；When two blades 3 work at the same time, cutter
Stress equalization, centre bore circularity small, after processing of beating are stablized.Blade 31 makes with 2 outside wall parallel of boss and crankshaft center
Hole matches.By the way that two blades 3 and central symmetry distribution is arranged so that cutter stress equalization, stability are good, solve because of knife
Centre bore circularity fluctuates big problem and leads to the overproof problem of precision, centre bore circularity process capability caused by tool unbalance stress
It is obviously improved.By setting, blade 3 is detachable is fixedly connected on recess portion 21, and not only blade 3 is easy to installation and removal, but also
Also improve cutter overhaul efficiency.A kind of crankshaft center spot facing cutter of the utility model, has in terms of existing technologies
Advantage is：The overproof problem of precision caused by cutter discontinuity equalization is reduced, tool sharpening more stablizes and centre bore circularity
It fluctuates small.Even more preferably, multiple recess portions 21 can be opened up on boss 2, recess portion 21 can correspond to distribution blade 3, can be according to reality
Border needs to be arranged accordingly.
A kind of crankshaft center spot facing cutter of the utility model please refers to Fig.2 each figure related to Fig. 3, in front technical solution
On the basis of can also be:Cutter spacing portion is offered on the recess portion 21, the blade 3 is detachable to be fixedly connected on the cutter spacing
Portion.In this way, opening up cutter spacing portion on recess portion 21, blade 3 is directly placed into cutter spacing portion, and blade 3 is then fixedly connected on cutter spacing
In portion.Only blade 3 provides installation point in cutter spacing portion, but also blade 3 is more stably placed on boss 2, while
Play the role of more fast facilitating when assembly limit, installation and removal blade 3.Further preferred technical solution is：Two
A blade 3 is bolted to connection in the cutter spacing portion.In this way, blade 3 is mounted on cutter spacing portion by bolt, no
Installation and removal efficiency is improved only, and also reduces replacement cost.
A kind of crankshaft center spot facing cutter of the utility model please refers to Fig.2 each figure related to Fig. 3, in front technical solution
On the basis of can also be:31 top of the blade is fixedly connected with the first knife face 32.In this way, the first knife face 32 is on blade 31
The fillet surface in portion, the first knife face 32 are distributed in obtuse angle with 31 face of blade.Guiding role is not only acted as by the way that the first knife face 32 is arranged,
And reduce the stress surface of tool sharpening.
A kind of crankshaft center spot facing cutter of the utility model please refers to Fig.2 each figure related to Fig. 3, in front technical solution
On the basis of can also be:31 lower part of the blade is fixedly connected with the second knife face 33.In this way, the first knife face 32 is under blade 31
The fillet surface in portion, the second knife face 33 are distributed in obtuse angle with 31 face of blade.By be arranged the second knife face 33 reduce tool sharpening by
Power face.
It is above-mentioned that only several specific embodiments in the utility model are illustrated, but can not be as the utility model
Protection domain, the equivalent change or modification or equal proportion amplification made by every design spirit according in the utility model or contracting
It is small etc., it is deemed to fall the scope of protection of the utility model.
Claims (5)
1. a kind of crankshaft center spot facing cutter, it is characterised in that：Including knife bar (1) and round boss (2), the boss (2) is located at
Knife bar (1) top, the knife bar (1) are fixedly connected or are integrally formed with the boss (2), and boss (2) upper end is opened
If there are two symmetrical recess portion (21), two recess portion (21) side walls are detachable to be fixedly connected with blade (3), two
Blade (31) direction of the distribution of a blade (3) central symmetry, two blades (3) it is opposite and with the boss (2)
Outer wall surface is parallel, and the blade (31) is raised in the boss (2) outer wall surface.
2. a kind of crankshaft center spot facing cutter according to claim 1, it is characterised in that：Knife is offered on the recess portion (21)
Position portion, the blade (3) is detachable to be fixedly connected on the cutter spacing portion.
3. a kind of crankshaft center spot facing cutter according to claim 2, it is characterised in that：Two blades (3) pass through
Bolt is fixedly connected in the cutter spacing portion.
4. according to a kind of crankshaft center spot facing cutter described in claim 1-3 any one claims, it is characterised in that：It is described
Blade (31) top is fixedly connected with the first knife face (32).
5. according to a kind of crankshaft center spot facing cutter described in claim 1-3 any one claims, it is characterised in that：It is described
Blade (31) lower part is fixedly connected with the second knife face (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244391.5U CN207930079U (en) | 2018-02-11 | 2018-02-11 | A kind of crankshaft center spot facing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820244391.5U CN207930079U (en) | 2018-02-11 | 2018-02-11 | A kind of crankshaft center spot facing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207930079U true CN207930079U (en) | 2018-10-02 |
Family
ID=63652463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820244391.5U Active CN207930079U (en) | 2018-02-11 | 2018-02-11 | A kind of crankshaft center spot facing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207930079U (en) |
-
2018
- 2018-02-11 CN CN201820244391.5U patent/CN207930079U/en active Active
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