CN107052424A - Rapid changing knife structure for underloading milling machine - Google Patents
Rapid changing knife structure for underloading milling machine Download PDFInfo
- Publication number
- CN107052424A CN107052424A CN201710273145.2A CN201710273145A CN107052424A CN 107052424 A CN107052424 A CN 107052424A CN 201710273145 A CN201710273145 A CN 201710273145A CN 107052424 A CN107052424 A CN 107052424A
- Authority
- CN
- China
- Prior art keywords
- bearing
- sliding sleeve
- axle
- tool bar
- broaching tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/26—Securing milling cutters to the driving spindle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
Rapid changing knife structure for underloading milling machine, broaching tool bar inserts sliding sleeve axle and fixed in upper end by screw and pad, broaching tool bar lower end end is provided with the inclined-plane of equal angular to cooperate, the built-in variable-diameter inner hole insertion milling cutter matched with milling cutter diameter of broaching tool bar, sliding sleeve axle is connected by the cooperation of bearing with cast casing, two pieces bearing is pressed in cast casing by two pieces bearing (ball) cover, belt pulley one side leans against the shaft shoulder, belt pulley another side is installed in series with axle sleeve and bearing, is finally connected and compressed with sliding sleeve axle by left hand thread with screw pressure cap.The present invention is simple in construction, and quick and easy for installation, cost is low, and the sliding sleeve axle coordinated with handle of a knife effectively reduces diameter, substantially increases operability during processing, and applicability is high；Cutter coupling mechanism force is big, during locking cutter, and lower end uses open-end wrench, and upper end uses between inner hexagon spanner, two hands distance, and relatively far away from, good operation safety effectively prevent operating personnel and squeeze the problem of hindering hand.
Description
Technical field
The present invention relates to underloading machining tool accessory technical field, and in particular to a kind of for the quick of underloading milling machine
Tool-changing mechanism.
Background technology
With the development of science and technology the new material needed in people's life also becomes with rapid changepl. never-ending changes and improvements.In metal-working industry, milling
Cut as most common processing mode, traditional cutter holding locking is generally the form of main shaft taper shank.This form is to insert milling cutter
Taper shank, is then fixed by locking nut screw thread, then taper shank is inserted into spindle taper hole, and taper shank is fixed on into main shaft with blind rivet
On, the fixation of cutter is finally realized, the cutter that this mode is fixed has prominent performance in Large Parts Machining connection metal, such as essence
Degree is high, rigidity is strong etc., but its cost is also very high.In underloading manufacture field, the imitative type milling of such as door and window industry, its range of work
Small, axial-radial stress is small, and small to cutter holding mechanism headspace, above-mentioned tool lock system will have shortcomings.Cause
This is in the urgent need to a kind of small volume, features simple structure, it is easy to tool changing, cheap quick-locking mechanism.
The content of the invention
The invention provides a kind of rapid changing knife structure for underloading milling machine, to solve the body of prior art presence
The problem of product big, complicated and inconvenient tool changing.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of rapid changing knife structure for underloading milling machine, by screw pressure cap, pad, screw, bearing (ball) cover, casting
Shell, axle sleeve, belt pulley, key, sliding sleeve axle, bearing and broaching tool bar composition, broaching tool bar insertion sliding sleeve axle simultaneously pass through screw in upper end
Fixed with pad, broaching tool bar lower end end is provided with the inclined-plane of equal angular to cooperate, with milling cutter diameter phase built in broaching tool bar
The variable-diameter inner hole insertion milling cutter matched somebody with somebody, sliding sleeve axle is connected by the cooperation of bearing with cast casing, and two pieces bearing (ball) cover is by two pieces axle
Hold and be pressed in cast casing, belt pulley one side leans against the shaft shoulder, and belt pulley another side is installed in series with axle sleeve and bearing, finally used
Screw pressure cap is connected and compressed with sliding sleeve axle by left hand thread.
Above-mentioned screw pressure cap is provided for the left hand thread of both cooperations with sliding sleeve axle, and screw pressure cap sets milling flat with convenient
Spanner is locked.
Above-mentioned sliding sleeve axle lower edge increases chamfering, and sliding sleeve axle lower end sets milling flat, for being locked using spanner or unclamping screw
Pressure cap and screw.
Above-mentioned bearing is a pair of angular contact ball bearings, can greatly bear the pulling force produced when belt and feeding without mistake
Heat, while larger axial force can be born, when being contoured, because axial force is minimum, so this bearing can also use zanjon
Ball bearing.
The present invention is simple in construction, and quick and easy for installation, cost is low, and the sliding sleeve axle coordinated with handle of a knife effectively reduces diameter,
Operability during processing is substantially increased, applicability is high；Cutter coupling mechanism force is big, can reach 2000 times of spanner spinning force
More than, operation is light, reduces labor intensity；When locking cutter, lower end uses open-end wrench, and upper end uses inner hexagon spanner,
Relatively far away from, good operation safety, nut and the milling that effectively prevent traditional handle of a knife is flat all in lower end, operation for distance between two hands
When two hands apart from close, operating personnel are easily caused when overexerting and squeeze the problem of hindering hand.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of apparatus of the present invention；
Fig. 2 is the schematic diagram of Section A-A in Fig. 1；
Fig. 3 is the schematic diagram of section B-B in Fig. 1；
Fig. 4 is force analysis figure when the present invention clamps milling cutter；
Fig. 5 is the schematic diagram in broaching tool bar tapered end section of the present invention；
Fig. 6 is that cutter of the present invention changes the outfit schematic diagram.
1 screw pressure cap, 2 pads, 3 screws, 4 bearing (ball) covers, 5 cast casings, 6 axle sleeves, 7 belt pulleys, 8 keys, 9 sliding sleeves in figure
Axle, 10 bearings, 11 broaching tool bars.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, a kind of rapid changing knife structure for underloading milling machine, by screw pressure cap 1, pad
Piece 2, screw 3, bearing (ball) cover 4, cast casing 5, axle sleeve 6, belt pulley 7, key 8, sliding sleeve axle 9, bearing 10 and broaching tool bar 11 are constituted,
The insertion sliding sleeve of broaching tool bar 11 axle 9 is simultaneously fixed in upper end by screw 3 and pad 2, and the lower end end of broaching tool bar 11 is provided with equal angular
Inclined-plane cooperate, the built-in variable-diameter inner hole insertion milling cutter matched with milling cutter diameter of broaching tool bar 11, sliding sleeve axle 9 passes through bearing
10 cooperation is connected with cast casing 5, and two pieces bearing 10 is pressed in cast casing by two pieces bearing (ball) cover 4, the one side of belt pulley 7
The shaft shoulder is leaned against, the another side of belt pulley 7 is installed in series with axle sleeve 6 and bearing 10, is finally connected simultaneously with sliding sleeve axle 9 with screw pressure cap 1
Compress.Screw pressure cap 1 is provided for the left hand thread of both cooperations with sliding sleeve axle 9, and screw pressure cap 1 is also machined with shown in Fig. 3
Milling it is flat, locked with convenient wrench.The lower edge of sliding sleeve axle 9 increases chamfering, as shown in Fig. 2 the lower end of sliding sleeve axle 9 sets milling flat, is used for
Locked using spanner or unclamp screw pressure cap and screw.Bearing is a pair of angular contact ball bearings, can greatly bear belt and enter
To when the pulling force that produces without overheating, while larger axial force can be born, when being contoured, because axial force is minimum, institute
Deep groove ball bearing can also be used with this bearing.
Operation principle of the present invention：
Operating principle
When needing to clamp milling cutter, turned clockwise screw 3 using allen wrench, pretightning force F is produced by screw 3, power F's
Calculation formula is：
Wherein T is spanner rotation torque, and T=F1*L, F1 is rotation pulling force（Assuming that 20N）；L is that spanner is long（Six side in M10
Spanner is about 180mm）；Then T=20*0.18=3.6Nm；η：Leading screw delivery efficiency (screw is about 0.7)；L is screw pitch；A：Subtract
Speed ratio（This value is 1）, so that screw 3 is standard M10 screws as an example, pitch is 1.5mm, so F=3.6*2*3.14*0.7/
0.0015=10550.4N, almost inputs 527 times of strength.
Now, broaching tool bar 11 is produced in the presence of power F and moved up, stress at the inclined-plane that broaching tool bar 11 coordinates with sliding sleeve axle 9
Balance, analyzes its stress as shown in figure 4, the pulling force F produced by screw 3, pressure N and sliding sleeve that sliding sleeve axle 9 is produced to circular conical surface
The frictional force f that wall is produced with the wall of broaching tool bar 11, because the tapered end section of broaching tool bar 11 is as shown in figure 5, so pressure N can force drawing
The conical section of knife bar 11 is inwardly tightened, and is clamped cutter.
According to the equilibrium equation of taper axle sleeve：F=Nsin θ+μ Ncos θ, the calculation formula for calculating pressure N is：
N=F/（sinθ+μcosθ）
Wherein, for example preceding calculated values of F are：10550.4N
Morse's taper angle is generally 2-3 °, and 2.9 ° are fixed tentatively herein
Morse's taper friction fit force coefficient is generally 0.12 ~ 0.2, is calculated herein by 0.2.
Then pressure N=10550.4/（sin2.9+0.2*cos2.9）≈ 42235N, are initially enter strength 2111 times.
Thus, it is possible to draw, using the present invention, operation inner hexagon spanner can enter under the strength of very little to handle of a knife
Row locking, greatly reduces labor intensity.
As shown in fig. 6, change the outfit cutter when, by unscrewing screw 3, move up screw 3, when being contacted with screw pressure cap 1, produce anti-
To thrust, broaching tool bar 11 is moved down, from the interior abjection of sliding sleeve axle 9, coordinate the radial pressure on inclined-plane to disappear, milling cutter can be very easily
Extract out.
Claims (4)
1. a kind of rapid changing knife structure for underloading milling machine, it is characterized in that by screw pressure cap, pad, screw, bearing end
Lid, cast casing, axle sleeve, belt pulley, key, sliding sleeve axle, bearing and broaching tool bar composition, broaching tool bar insertion sliding sleeve axle are simultaneously logical in upper end
Cross screw and pad is fixed, broaching tool bar lower end end is provided with the inclined-plane of equal angular to cooperate, broaching tool bar is built-in and milling cutter
The variable-diameter inner hole insertion milling cutter that diameter matches, sliding sleeve axle is connected by the cooperation of bearing with cast casing, and two pieces bearing (ball) cover will
Two pieces bearing is pressed in cast casing, and belt pulley one side leans against the shaft shoulder, and belt pulley another side is installed in series with axle sleeve and bearing,
Finally it is connected and is compressed with sliding sleeve axle by left hand thread with screw pressure cap.
2. the rapid changing knife structure according to claim 1 for underloading milling machine, it is characterized in that screw pressure cap and cunning
Set axle is provided for the left hand thread of both cooperations, and screw pressure cap sets milling flat.
3. the rapid changing knife structure according to claim 1 for underloading milling machine, it is characterized in that sliding sleeve axle lower edge increases
Plus chamfering, sliding sleeve axle lower end sets milling flat.
4. the rapid changing knife structure according to claim 1 for underloading milling machine, it is characterized in that bearing is pair of horns
Contact ball bearing or deep groove ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273145.2A CN107052424A (en) | 2017-04-25 | 2017-04-25 | Rapid changing knife structure for underloading milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273145.2A CN107052424A (en) | 2017-04-25 | 2017-04-25 | Rapid changing knife structure for underloading milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107052424A true CN107052424A (en) | 2017-08-18 |
Family
ID=59605331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710273145.2A Pending CN107052424A (en) | 2017-04-25 | 2017-04-25 | Rapid changing knife structure for underloading milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107052424A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10328921A (en) * | 1997-05-30 | 1998-12-15 | Fuji Heavy Ind Ltd | Cutting tool |
| CN101327566A (en) * | 2007-06-21 | 2008-12-24 | 费希尔股份公司 | Centrifugal force assisted tool clamping system |
| CN201586872U (en) * | 2009-09-30 | 2010-09-22 | 重庆齿轮箱有限责任公司 | Quick-change tool shank |
| CN202527766U (en) * | 2012-03-05 | 2012-11-14 | 宁波远达船机配件有限公司 | Facer locating and clamping mechanism for machining cylinder cover |
| CN103846710A (en) * | 2014-03-07 | 2014-06-11 | 山东派克诺尔机器有限公司 | Quick-changing structure for face milling cutter |
| CN203791712U (en) * | 2014-02-21 | 2014-08-27 | 山东方达机械有限公司 | Taper shank hybrid insertion type milling cutter arbor |
| CN105108549A (en) * | 2015-09-21 | 2015-12-02 | 江苏港星方能超声洗净科技有限公司 | Tool changing device for machine tool |
| CN206869206U (en) * | 2017-04-25 | 2018-01-12 | 山东派克诺尔机器有限公司 | Rapid changing knife structure for underloading milling machine |
-
2017
- 2017-04-25 CN CN201710273145.2A patent/CN107052424A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10328921A (en) * | 1997-05-30 | 1998-12-15 | Fuji Heavy Ind Ltd | Cutting tool |
| CN101327566A (en) * | 2007-06-21 | 2008-12-24 | 费希尔股份公司 | Centrifugal force assisted tool clamping system |
| CN201586872U (en) * | 2009-09-30 | 2010-09-22 | 重庆齿轮箱有限责任公司 | Quick-change tool shank |
| CN202527766U (en) * | 2012-03-05 | 2012-11-14 | 宁波远达船机配件有限公司 | Facer locating and clamping mechanism for machining cylinder cover |
| CN203791712U (en) * | 2014-02-21 | 2014-08-27 | 山东方达机械有限公司 | Taper shank hybrid insertion type milling cutter arbor |
| CN103846710A (en) * | 2014-03-07 | 2014-06-11 | 山东派克诺尔机器有限公司 | Quick-changing structure for face milling cutter |
| CN105108549A (en) * | 2015-09-21 | 2015-12-02 | 江苏港星方能超声洗净科技有限公司 | Tool changing device for machine tool |
| CN206869206U (en) * | 2017-04-25 | 2018-01-12 | 山东派克诺尔机器有限公司 | Rapid changing knife structure for underloading milling machine |
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