CN204122779U - A kind of oppositely borer - Google Patents
A kind of oppositely borer Download PDFInfo
- Publication number
- CN204122779U CN204122779U CN201420599267.2U CN201420599267U CN204122779U CN 204122779 U CN204122779 U CN 204122779U CN 201420599267 U CN201420599267 U CN 201420599267U CN 204122779 U CN204122779 U CN 204122779U
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- knife bar
- hole
- diameter
- guide head
- borer
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Abstract
The utility model discloses a kind of oppositely borer, it comprises: knife bar, its sidewall offers a rectangular through-hole, and this one of them diameter of rectangular through-hole center line and knife bar overlaps, and the length direction on sidewall parallels with knife bar axis; At least two group guide heads, it is arranged on the sidewall of described knife bar, described guide head adopts nylon material to make, and often organizes guide head by two cylinder compositions along the distribution of one of them diameter symmetry of knife bar, and two cylinders of adjacent sets guide head are along described cutter spindle to stagger and radial direction staggers; Wherein, the guiding diameter often organizing two cylinder formations in guide head is greater than the diameter of described knife bar, and before cutter unprocessed workpiece, be also greater than the diameter of pilot hole on workpiece.Adopt soft nylon guide head to achieve gapless guiding in reverse borer described in the utility model between knife bar and the pilot hole of workpiece to be processed, the guiding steady that improve cutter is qualitative.
Description
Technical field
The utility model belongs to field of machining, especially designs a kind of reverse borer.
Background technology
At present for the reverse boring in hole, most employing be overall high-speed steel or brazed shank tool, the most of draw ratio of cutter of reverse bore hole is comparatively large, needs some to support as guiding, and the support great majority of conventional tool adopt following several: 1, boring bar self is as support; 2, solder alloy gib block is as support; 3, guide copper sleeve is installed.The major defect of Current protocols is:
One, this several support all belongs to has gap to support, can with but guide effect is not best;
Two, boring bar selve support and welding alloy gib block are all unrepairable support guides, unrepairable after damaging; And copper sheathing guiding needs certain thickness copper sheathing, be difficult to realize, affect rigidity and the intensity of bar self simultaneously, moreover copper alloy is worth high for small aperture, use cost is also just high.
Utility model content
The utility model develops a kind of novel reverse borer for the faultiness design existing for existing borer, this cutter have employed soft nylon guide head as guide support, the gapless achieved between boring bar and workpiece to be processed pilot hole supports, and improves the guide effect of whole cutter.
The technical scheme that the utility model provides is:
A kind of oppositely borer, it comprises:
Knife bar, its sidewall offers a rectangular through-hole, and this one of them diameter of rectangular through-hole center line and knife bar overlaps, and the length direction on sidewall parallels with knife bar axis;
Blade, it runs through the rectangular through-hole on described knife bar and cutting edge is stayed knife bar both sides;
At least two group guide heads, it is arranged on the sidewall of described knife bar, described guide head adopts nylon material to make, and often organizes guide head by two cylinder compositions along the distribution of one of them diameter symmetry of knife bar, and two cylinders of adjacent sets guide head are along described cutter spindle to stagger and radial direction staggers;
Wherein, the guiding diameter often organizing two cylinder formations in guide head is greater than the diameter of described knife bar, and before cutter unprocessed workpiece, be also greater than the diameter of pilot hole on workpiece.
Preferably, described knife bar is formed with two and locating surfaces of being parallel to each other symmetrical relative to knife bar axis through cutting on the wall at its place, rectangular through-hole two ends, and described rectangular through-hole vertically runs through described locating surface at least partially and runs through position at it and form a breach.
Preferably, described blade offers rectangle locating slot in cutting edge side, and described rectangle locating slot is stuck on two locating surfaces of described knife bar, matches with two locating surfaces simultaneously.
Preferably, be provided with axial screw in the middle part of described knife bar front, described screw one end extends to the end of knife bar, and the other end extends to described rectangular through-hole and to form rectangular through-hole through.
Preferably, described screw internal thread is provided with one and holds out against screw.
Preferably, be provided with cooling water inlet pipe road in the middle part of described knife bar rear, described inlet channel end is connected to four apopores respectively by four laterals, and described four apopores are symmetrically distributed on the sidewall of described knife bar between two.
Preferably, described guide head is 2-4 group, and is vertical interference fit on the sidewall of described knife bar.
Reverse borer described in the utility model have employed the guide head that elastomeric nylon material is made on knife bar, make this guide head can play good gapless guide effect to knife bar in boring with tool process, because guide head belongs to soft elastic material, it will be close to pilot hole hole wall after entering the pilot hole of workpiece, the vibration that cutter head transmits can be absorbed, there is good damping effect.Be further, mounting means for blade and knife bar also changes, and adopts the mode of draw-in groove location to make to install and use efficient and convenient, and when blade can be good at being stabilized in knife bar, meanwhile improve the crudy in hole, reduce the use cost of cutter.Finally, knife bar is designed with internal cooling system, there is the multiple functions such as lubrication, cooling and chip removal.
Accompanying drawing explanation
Fig. 1 is the front view of reverse borer described in the utility model;
Fig. 2 is the top view of reverse borer described in the utility model;
Fig. 3 is the left view of reverse borer described in the utility model;
Fig. 4 is the blade structure schematic diagram of reverse borer described in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to description word to make those skilled in the art.
As Figure 1-4, the utility model provides a kind of oppositely borer, and it comprises: knife bar 1, its sidewall offers a rectangular through-hole 2, this one of them diameter of rectangular through-hole center line and knife bar overlaps, and the length direction on sidewall parallels with knife bar axis; Blade 10, it runs through the rectangular through-hole on described knife bar and cutting edge is stayed knife bar both sides; At least two group guide heads 6, it is arranged on the sidewall of described knife bar, described guide head adopts nylon material to make, and often organize guide head by two cylinder (can see from Fig. 1) compositions along the distribution of one of them diameter symmetry of knife bar, two cylinders of adjacent sets guide head are along described cutter spindle to stagger and radial direction staggers; Wherein, the guiding diameter often organizing two cylinder formations in guide head is greater than the diameter of described knife bar, and before cutter unprocessed workpiece, be also greater than the diameter of pilot hole on workpiece." along described cutter spindle to stagger and radial direction staggers " mentioned here represent at knife bar between adjacent sets guide head circumferentially in the angle having 60-90 degree, and maintain the long distance of L in the axial direction, as seen from Figure 2.This design can guarantee knife bar has enough spigot surfaces and guiding length, and then realizes the guide support to cutter.The height that " often in group guide head, the guiding diameter of two cylinder formations is greater than the diameter of described knife bar " mentioned here can be understood as two cylinders in guide head is higher than the wall of knife bar and forms projection on knife bar.
See Fig. 1 and Fig. 2, described knife bar is formed with two and locating surfaces 7 of being parallel to each other symmetrical relative to knife bar axis through cutting on the wall at its place, rectangular through-hole two ends, and described rectangular through-hole vertically runs through described locating surface at least partially and runs through position at it and form a breach.Described blade offers rectangle locating slot 11 in cutting edge side, and described rectangle locating slot is stuck on two locating surfaces of described knife bar, matches with two locating surfaces simultaneously; Its locating surface and the spacing of locating slot limit blade moving radially on knife bar.Further, be provided with axial screw 8 in the middle part of described knife bar front, described screw one end extends to the end of knife bar, and the other end extends to described rectangular through-hole and through with rectangular through-hole (also can see from Fig. 1).Be provided with one in described screw and hold out against screw 9.Namely when blade is inserted into rectangular through-hole, the blade that moves right makes its locating slot snap on two locating surfaces of knife bar, now screws screw 9, makes it be withstood by blade, limits blade moving axially on knife bar.Here screw is through with rectangular through-hole, screw just can be enable to withstand blade in rectangular through-hole, otherwise cannot realize axial restriction.Add man-hour, described knife bar 1 is through workpiece pilot hole, and be installed on by blade on knife bar and compress with screw 9, blade cut sword is towards machine tool chief axis end, and knife bar moves to spindle end, realizes the reverse processing to workpiece hole.And when cutter rotates in pilot hole process, the aperture seamed edge of workpiece pilot hole completes cutting to nylon guide head (also can claim the nylon rod that leads), make final nylon guide head guiding diameter identical with pilot hole diameter on workpiece, with hole wall intimate contact, complete gapless guiding.
Be provided with cooling water inlet pipe road 5 in the middle part of described knife bar rear, described inlet channel end is connected to four apopores 3 respectively by four laterals 4, and described four apopores are symmetrically distributed on the sidewall of described knife bar between two.Can see from Fig. 1-2, these four apopores are mutual vertical distribution on knife bar sidewall.
Further, described guide head is 2-4 group, and is vertical interference fit on described knife bar sidewall.What adopt in the utility model is two groups of guide heads, two cylinders of adjacent sets guide head in knife bar radial direction in 90 degree distributions, and in the axial direction between be separated with the long distance of L, to guarantee there are enough spigot surfaces and the length that leads.
Blade of the present utility model is high speed steel material, and the locating surface on its locating slot and knife bar has fit tolerance requirement, and positioning precision is high, easy for installation.The rear knife bar of blade is equipped with nylon guide head 6, and nylon guide head interference fit is contained on bar, and the diameter of bar only need than the pilot hole diameter on workpiece to be processed little 1-2 millimeter.Before use because the guiding diameter of nylon guide head is greater than the diameter of knife bar, therefore be also the diameter that is greater than pilot hole, knife bar is rotating and enters workpiece pilot hole in use, the convex portion going out knife bar wall to head height at aperture nylon guide will be cut away by sharp aperture, the guide head guiding diameter entering pilot hole is like this just identical with the diameter of pilot hole, forms gapless guidance system.Knife bar is designed with cooling water inlet pipe road, namely forms internal cooling system, there is the multiple functions such as lubrication, cooling and chip removal.
The implementation process of reverse borer described in the utility model is as follows:
The nylon guide head made in advance is knocked in hole corresponding on knife bar.Knife bar dress is with on lathe, temporarily do not fill blade, make the center in the processed hole of its centering, rotating spindle, and move forward main shaft, make knife bar by pilot hole, spill the flat through hole installing blade, blade is loaded in this hole, note direction, after loading, blade locating slot is snapped on the locating surface of knife bar, rotatably compress screw, by blade pressing.Opening cooling fluid just can bore hole.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in description and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. a reverse borer, is characterized in that, comprising:
Knife bar, its sidewall offers a rectangular through-hole, and this one of them diameter of rectangular through-hole center line and knife bar overlaps, and the length direction on sidewall parallels with knife bar axis;
Blade, it runs through the rectangular through-hole on described knife bar and cutting edge is stayed knife bar both sides;
At least two group guide heads, it is arranged on the sidewall of described knife bar, described guide head adopts nylon material to make, and often organizes guide head by two cylinder compositions along the distribution of one of them diameter symmetry of knife bar, and two cylinders of adjacent sets guide head are along described cutter spindle to stagger and radial direction staggers;
Wherein, the guiding diameter often organizing two cylinder formations in guide head is greater than the diameter of described knife bar, and before cutter unprocessed workpiece, be also greater than the diameter of pilot hole on workpiece.
2. oppositely borer as claimed in claim 1, it is characterized in that, described knife bar is formed with two and locating surfaces of being parallel to each other symmetrical relative to knife bar axis through cutting on the wall at its place, rectangular through-hole two ends, and described rectangular through-hole vertically runs through described locating surface at least partially and runs through position at it and form a breach.
3. oppositely borer as claimed in claim 2, it is characterized in that, described blade offers rectangle locating slot in cutting edge side, and described rectangle locating slot is stuck on two locating surfaces of described knife bar, matches with two locating surfaces simultaneously.
4. oppositely borer as claimed in claim 3, it is characterized in that, be provided with axial screw in the middle part of described knife bar front, described screw one end extends to the end of knife bar, and the other end extends to described rectangular through-hole and to form rectangular through-hole through.
5. oppositely borer as claimed in claim 4, it is characterized in that, described screw internal thread is provided with one and holds out against screw.
6. oppositely borer as claimed in claim 5, it is characterized in that, be provided with cooling water inlet pipe road in the middle part of described knife bar rear, described inlet channel end is connected to four apopores respectively by four laterals, and described four apopores are symmetrically distributed on the sidewall of described knife bar between two.
7. oppositely borer as claimed in claim 6, it is characterized in that, described guide head is 2-4 group, and is vertical interference fit on the sidewall of described knife bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599267.2U CN204122779U (en) | 2014-10-16 | 2014-10-16 | A kind of oppositely borer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420599267.2U CN204122779U (en) | 2014-10-16 | 2014-10-16 | A kind of oppositely borer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204122779U true CN204122779U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420599267.2U Active CN204122779U (en) | 2014-10-16 | 2014-10-16 | A kind of oppositely borer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204122779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673128A (en) * | 2020-06-11 | 2020-09-18 | 江苏迈信林航空科技股份有限公司 | Hole reverse processing device and processing method |
| CN113305352A (en) * | 2021-06-24 | 2021-08-27 | 成都爱乐达航空制造股份有限公司 | Method for reversely drawing and processing blind hole in horizontal processing center |
-
2014
- 2014-10-16 CN CN201420599267.2U patent/CN204122779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673128A (en) * | 2020-06-11 | 2020-09-18 | 江苏迈信林航空科技股份有限公司 | Hole reverse processing device and processing method |
| CN113305352A (en) * | 2021-06-24 | 2021-08-27 | 成都爱乐达航空制造股份有限公司 | Method for reversely drawing and processing blind hole in horizontal processing center |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |