CN1077671A - High-speed carbide drill for trepanning - Google Patents
High-speed carbide drill for trepanning Download PDFInfo
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- CN1077671A CN1077671A CN 92102576 CN92102576A CN1077671A CN 1077671 A CN1077671 A CN 1077671A CN 92102576 CN92102576 CN 92102576 CN 92102576 A CN92102576 A CN 92102576A CN 1077671 A CN1077671 A CN 1077671A
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Abstract
A kind of high-speed carbide drill for trepanning is characterized in that under the feather key rubber cushion being arranged, and is one group of installation by two cuttves, and second cutter is than the highly low 0.5～0.7mm of first cutter tool setting, and second group of tool setting with first group is highly identical.Its cutter head angle is to have with 10 ° of relief angles in the middle of the main cutting edge of cutter head of first cutter to locate 2.5 millimeters of perpendicular circular arc R, the anterior angle of two cuttves is+and 3 °～4 °, primary clearance is 9 °～10 °, there are 2 * 45 ° of chamferings and 2 * 30 ° in cutter head place, main cutting edge both sides, the angle, rear flank is 6 °～8 °, be applicable to high-speed cutting processing more than Φ 70 to Φ 300 deep holes to 15 meter, can improve more than 6～10 times than general cutter efficient.
Description
High-speed carbide drill for trepanning belongs to the cutting tool field in the metal material processing, is used for metal material deep hole jacking, is particularly suitable for the big deep hole jacking processing of high-alloy steel and precious metal material.
The present disclosed patent No. is that the name of CN87209720U is called high-speed loop hole cylindrical drill, its architectural feature is a kind of annular distance cylindrical drill of being made up of knife bar, cutter head, centring means, be that the protruding key of cutter head links to each other with the knife bar flange, or cutter head leads and is threaded with double-screw bolt, centering is conical surface location screw plug, and cutter tooth increases end face cutting edge inclination λ
t, cutter head smear metal part helical angle is not more than 15 °, cutter tool cutting edge angle K
rBe no more than 90 °, working approach angle
Below 12 °.This kind tool specification scope is from φ 20～φ 150mm.Knife-tooth structure adopts high-speed steel clamped cutting bit sheet, welding carbide alloy cutter tooth, indexable carbide chip, ion beam weldering bimetallic cutter tooth and carbide alloy " sand sword ".Its operation principle is similar to annular groove cutting knife and shallow bore hole cylindrical drill.Its major advantage is that cutting is brisk, accurate positioning.
The disclosed in addition patent No. is that the name of CN87203994U is called 4 guiding of four swords trepanning tool, its architectural feature is made up of blade, guide pad, cutter hub and knife bar, the installation site feature of its blade be the geometry of four blades, highly, unique characteristics such as the width of preceding cutting edge and position, adopting it can once finish diameter is φ 20mm, and the degree of depth is in the small deep hole jacking processing in 50～100 times of apertures.Particularly be suitable for the small deep hole jacking processing of fragility rare metallic material.The feature of the arrangement of blade is that four blades and four guide pads are divided into four groups and arrange by branches such as circumference and to be brazed on the cutter hub, and the preceding cutting edge of four blades is H with respect to the height relationships of the rear end face of vertical cutter hub axis
1＞H
2＞H
3＞H
4, the width relation of four preceding cutting edges of blade is K
1＜K
2＜K
3＜K
4
More than two patents all each have its advantage, main is separately can both the deep hole jacking, and processing scope on diameter from φ 20 to φ 150, chip removal is normal, and from 2 meters to 5 meters, its common ground is that two kinds of patents all improve to some extent on the angle of blade on the degree of depth, the arrangement of blade is all created to some extent, on the work piece precision, in the centering accurately, each blade is bearing the needs that can both adapt to the deep hole jacking on the cutting force.Weak point is:
1. the range of work is little;
2. working (machining) efficiency is low;
3. concentricity is low during the deep hole of processing.
The invention provides a kind of range of work big, that working (machining) efficiency is higher, concentricity and the higher high-speed carbide drill for trepanning of precision in the time of can processing deep hole.Its range of work expands φ to more than 300 by φ 70, its cutting speed is brought up to 60～80 meters/minute by 8 meters/minute, the depth of cut is brought up to 80～100mm/ branch by the 20mm/ branch, rising to 0.4～0.5mm/ by tool feeding amount 0.2～0.25mm/ commentaries on classics changes, the rotor number of times is brought up to the cutting at one time success for 8 times by boring to expand, and chip removal is smooth and easy without hindrance, can improve work efficiency more than 6～10 times.
Purpose of the present invention can reach by following measure: a kind of high-speed carbide drill for trepanning is made of cutter hub, handling hole, edge bearing, body of tool bit, alloy cutter head, feather key, screw, it is characterized in that body of tool bit is is one group of dress tool bore that is installed in cutter hub by two cuttves, can organize installation more; Under the feather key rubber cushion is arranged, the tool setting installation site is the cutter tool setting setting height(from bottom) difference in every group, and second cutter is than the highly low 0.5～0.7mm of the installation tool setting of first cutter, and second group of installation tool setting with first group is highly identical; Have with 10 ° of relief angles in the middle of the alloy cutter head main cutting edge of first cutter and locate 2.5 millimeters of perpendicular circular arc R; The alloy cutter head angle positive rake angle of second cutter is 3 °～4 °, primary clearance is 9 °～10 °, the angle, rear flank is 6 °～8 °, chamfering 2*45 ° at the point of a knife place, both sides of blade vertical view, there is 2*30 ° of chamfering the two sides of blade left side view, the body of tool bit afterbody has 3 ° of breach, and body of tool bit is connected with carbide quartz welding, and feather key and rubber cushion are fixed on the cutter hub by screw.
Purpose of the present invention can also reach by following measure: rubber cushion adopts oil resistant rubber or directly replaces rubber cushion with spring.3 ° of gap positions on the body of tool bit are the afterbodys at body of tool bit, are the umbrella shape plane.
The drawing of accompanying drawing is described as follows:
Fig. 1 is interior chip removal cutter hub assembly drawing,, piece number 1 is a cutter hub; Piece number 2 is a handling hole, the usefulness of loading and unloading cutter hub; Piece number 3,6 is an edge bearing, adjusts the usefulness of cutter height; Piece number 4,5 is an alloy cutter head, and middle ring cutting is cut and the usefulness of inside and outside middle part cutting; Piece number 7 is a body of tool bit, the usefulness of soldering carbide bit and fixed cutting tool, and piece number 8 is the dress tool bore, is the fixing usefulness of body of tool bit; Piece number 9 is a feather key, the usefulness of guiding and elimination cutting vibrations; Piece number 10 is a rubber cushion, eliminates the usefulness of vibrations; Piece number 11 is a screw, fixed guide key and the rubber cushion usefulness on cutter hub; Piece number 12 is the hard alloy blocks on the feather key, the usefulness of guiding.
Fig. 2 is the main angle schematic diagram of first cutter, 3 °～4 ° of the positive rake angles of main performance cutter head front in the front view, 3 ° of the breach on 8 °～10 ° of primary clearances and the body of tool bit; Mainly show chamfering 2*45 ° at R2.5 millimeter and point of a knife place, major cutting edge both sides in the vertical view, main performance angle, rear flank is 4 °～6 ° in the left side view, and cutaway view mainly is that performance body of tool bit afterbody is circle and the umbrella shape plane is arranged.
Fig. 3 is the main angle schematic diagram of second cutter, 3 °～4 ° of the positive rake angles of main performance cutter head front in the front view, 3 ° of the breach on 8 °～10 ° of primary clearances and the body of tool bit; Main performance is the major cutting edge both sides chamfering 2*45 of point of a knife place ° in the vertical view, 1 ° of auxiliary angle, 2*30 ° of chamfering of the cutting edge side of main 6 °～8 ° at angle, rear flank of performance and cutter head in the left side view; Cutaway view mainly shows the body of tool bit afterbody for circular and the umbrella shape plane arranged.
The present invention will now be further detailed embodiment: in force, if two groups of each two cuttves are installed, improve 1 times than the efficient that one group of smatterer is installed, test on same equipment, its smear metal is a rule watt shape shape fragment, and chip removal is unblocked.Its principle is that the R2.5 circular arc can be eaten two smear metals on the first cutter, is two cutting edges because of circular arc breaks main cutting edge, therefore has only two smear metals; Second cutter is owing to being lower than first cutter 0.5～0.7mm, so the penetration of a cutting tool afterwards when cutting of second cutter machines away remaining three smear metals, altogether five smear metals when tool setting is installed.Owing to be two or more sets,, cutting force is shared on multi-tool edge on five cutting edges on two cuttves or more so can take powerful high-speed cutting.Like this, very convenient when the reconditioning cutter head, tool setting is also very convenient.
In order to eliminate the vibrations that powerful high-speed cutting brings, under feather key, increased rubber cushion, absorbed by rubber cushion and adjust its guiding automatically in the caused vibrations of when cutting, the endoporus straight line Deviation Control that makes processing is within 0.2 millimeter every meter, and the deep hole outlet Deviation Control that makes 15 meters is within 3 millimeters.For example process the endoporus of 71.44 millimeters of φ, alloy cutter head width (being the penetration of a cutting tool width) is 20 millimeters, and its jacking core material diameter is 31.44 millimeters of φ.
Computational methods are as follows: (is example by two groups of cuttves)
Jacking core material diameter=processed aperture-2* cutter head width=71.44-2*20=31.44 millimeter
The number of chip width=penetration of a cutting tool width/penetration of a cutting tool sword=20/(2+3)=4 millimeter
The present invention has following advantage compared to existing technology:
1. improved working (machining) efficiency, made deep hole machining realize high-speed cutting, reason is that bite has been shared by more penetration of a cutting tool sword.
2. improved machining accuracy, reason is the precautions against earthquakes that increased feather key, has increased rubber cushion, and machining deviation is controlled within 0.2 millimeter/meter.
3. can process darker deep hole, can be worked into more than 15 meters.
4. can process larger-diameter deep hole, can be worked into φ more than 300 millimeters by 70 millimeters of φ.
Two of the present invention is one group cylindrical drill, can install two groups, more than three groups, can adjust according to the diameter of work size, the smear metal of being discharged can be 5,7,9,11 and more than.The present invention can be interior chip removal, also can be outer chip removal, and its body of tool bit can exchange, and on the chip removal cutter hub, also can be installed on the outer chip removal cutter hub in can being installed in.Go for according to cutter head angle of the present invention on the cutter hub of any high-speed cutting endoporus jacking processing.If adopt many groups, efficient also can significantly improve.
Claims (3)
1, a kind of high-speed carbide drill for trepanning is made of cutter hub, handling hole, edge bearing, body of tool bit, alloy cutter head, feather key, screw, it is characterized in that body of tool bit is is one group of dress tool bore that is installed in cutter hub by two cuttves, can organize installation more; Under the feather key rubber cushion is arranged, the tool setting installation site is the cutter tool setting setting height(from bottom) difference in every group, and second cutter is than the highly low 0.5～0.7mm of the installation tool setting of first cutter, and second group of installation tool setting with first group is highly identical.The alloy cutter head angle positive rake angle of first cutter is 3 °～4 °, have with 10 ° of relief angles in the middle of the main cutting edge of cutter head and locate 2.5 millimeters of perpendicular circular arc R, front clearance is 4 °～6 °, and primary clearance is 8 °～10 °, chamfering 2*45 ° at main cutting edge point of a knife place, the body of tool bit afterbody has 3 ° of breach; The alloy cutter head angle positive rake angle of second cutter is 3 °～4 °, and primary clearance is 9 °～10 °, and the angle, rear flank is 6 °～8 °, chamfering 2*45 ° at point of a knife place, major cutting edge both sides, and the cutting edge side has chamfering 2*30 °, and feather key and rubber cushion are fixed on the cutter hub by screw.
2, high-speed carbide drill for trepanning according to claim 1 is characterized in that rubber cushion adopts oil resistant rafter glue, or directly replaces rubber cushion with spring.
3, high-speed carbide drill for trepanning according to claim 1 is characterized in that 3 ° of gap positions on the body of tool bit are the afterbodys at body of tool bit, are the umbrella shape plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102576 CN1077671A (en) | 1992-04-15 | 1992-04-15 | High-speed carbide drill for trepanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102576 CN1077671A (en) | 1992-04-15 | 1992-04-15 | High-speed carbide drill for trepanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1077671A true CN1077671A (en) | 1993-10-27 |
Family
ID=4939733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92102576 Pending CN1077671A (en) | 1992-04-15 | 1992-04-15 | High-speed carbide drill for trepanning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1077671A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071610C (en) * | 1995-06-23 | 2001-09-26 | 奥古斯特·贝克有限公司 | Drilling tool |
| CN100513028C (en) * | 2005-09-28 | 2009-07-15 | 大见工业株式会社 | Hole cutter |
| CN102248204A (en) * | 2011-06-21 | 2011-11-23 | 潍柴动力股份有限公司 | Cutter and method for machining special deep hole |
| CN102310309A (en) * | 2010-06-29 | 2012-01-11 | 上海重型机器厂有限公司 | Trepanning sampling method of blind hole at rotator center and tool thereof |
| CN103071833A (en) * | 2013-02-06 | 2013-05-01 | 哈尔滨理工大学 | Diamond bit with brazing structure specially used for carbon fiber reinforced composite material |
| CN103737074A (en) * | 2013-12-05 | 2014-04-23 | 常州大学 | Novel trepanning tool |
-
1992
- 1992-04-15 CN CN 92102576 patent/CN1077671A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071610C (en) * | 1995-06-23 | 2001-09-26 | 奥古斯特·贝克有限公司 | Drilling tool |
| CN100513028C (en) * | 2005-09-28 | 2009-07-15 | 大见工业株式会社 | Hole cutter |
| CN102310309A (en) * | 2010-06-29 | 2012-01-11 | 上海重型机器厂有限公司 | Trepanning sampling method of blind hole at rotator center and tool thereof |
| CN102310309B (en) * | 2010-06-29 | 2013-10-30 | 上海重型机器厂有限公司 | Trepanning sampling method of blind hole at rotator center and tool thereof |
| CN102248204A (en) * | 2011-06-21 | 2011-11-23 | 潍柴动力股份有限公司 | Cutter and method for machining special deep hole |
| CN103071833A (en) * | 2013-02-06 | 2013-05-01 | 哈尔滨理工大学 | Diamond bit with brazing structure specially used for carbon fiber reinforced composite material |
| CN103737074A (en) * | 2013-12-05 | 2014-04-23 | 常州大学 | Novel trepanning tool |
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