CN101987377B - Cutting and fixing device and cutting method of sheet part - Google Patents
Cutting and fixing device and cutting method of sheet part Download PDFInfo
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- CN101987377B CN101987377B CN200910055651XA CN200910055651A CN101987377B CN 101987377 B CN101987377 B CN 101987377B CN 200910055651X A CN200910055651X A CN 200910055651XA CN 200910055651 A CN200910055651 A CN 200910055651A CN 101987377 B CN101987377 B CN 101987377B
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Abstract
The invention relates to a cutting and fixing device of sheet parts, comprising a supporting base used for supporting and fixing a part to be cut. The cutting and fixing device also comprises a first backing part and a second backing part, wherein the first backing part and the second backing part can be rotatablely installed on the supporting base and are used for compacting the part to be cut; the inner side edge of the first backing part has the same shape with an expected exterior outline of the part; the outer side edge of the second backing part has the shape complementary with the expected exterior outline of the part; a gap between the first backing part and the second backing part forms a cutting passageway; and the cutting passageway is used for guiding a cutting tool to cut the part in the direction vertical to the part in the cutting passageway. The invention also relates to a cutting method of the sheet parts by using the cutting and fixing device. The invention is characterized by adopting a double backing structure to cause the cutting tool to vertically cut the part between two backings so as to effectively avoid the phenomenon of jump.
Description
Technical field
The present invention relates to a kind of cutting fixture of sheet part.In addition, the invention still further relates to a kind of cutting method, wherein use said cutting fixture that sheet part is cut.Said sheet part for example is the skin part on the aircraft, mainly is aluminium alloy sheet.
Background technology
Usually, being used for skin part is that the cutting of aluminium alloy sheet mainly is to be made up of two parts.A part is that part is installed on the cutting clamper, and cutting clamper is mainly used in and in cutting process, makes part keep stable, makes cutter cut out correct part profile according to the copying milling of milling clamp; Another part is to utilize pneumatic cutting tool that part is cut, and guarantees that in this course cutting angle is very important for the cutting effect of part.
At present; It is that cutting tool has only backer on one side that the cutting method of part adopts the form of monolateral pattern mostly; That is to say, on part, press solidly backer's parts, these backer's parts have the corresponding to profile of part outline with expectation; Utilize cutting tool part to be cut along the outer side edges of these backer's parts, thus the part outline that acquisition needs.In cutting, the angle between cutting tool and the part should keep 90 °, otherwise the piece surface that processes can be unsmooth, even tilts, thereby can not mate with other part.In actual production, guarantee that with the mode of estimating the angle between cutting tool and the anchor clamps is 90 degree by the operator, the security of this operating process is very poor, especially in cutting process, is prone to take place the lifts phenomenon.
The lifts phenomenon is meant that mainly cutter has produced the phenomenon of once jumping for a certain reason when carrying out milling according to original milling track in the process of milling operation.The reason that produces mainly contains following several kinds: 1, cutter is stained with on the blade during advancing to impurity cutter jump when causing milling; 2, the cutter that causes milling jumps the cutting angle during milling because workman's misoperation changes; 3, the Pneumatic pressure instability causes the cutter of milling to jump in cutting operation process; 4, because the plasticity of aluminum alloy materials produces the cutter jump that built-up edge causes milling in cutting process; Can cause the cutter jump of milling etc. when 5, in cutting process, the breaking situation taking place.The profile that the phenomenon of lifts can cause the cutter mistake to cut part makes part scrap owing to profile is damaged.
Can know by above-mentioned analysis, the material of part, the quality of cutter and the control of cutting angle are all very important for the cutting effect of part.But, how to guarantee more stably that the cutting angle in the cutting process is a great problem that presses for solution most.
Summary of the invention
In order to address the above problem, the present invention adopts bilateral pattern on cutting clamper, fix cutting track, thereby guarantees cutting angle.
The objective of the invention is to realize through following technical scheme: the present invention provides a kind of cutting fixture of sheet part; It comprises support plinth; Said support plinth is used to support and fixing part to be cut; It is characterized in that said cutting fixture also comprises first backer's parts and the second backer's parts that rotatably are installed on the support plinth, is used to compress part to be cut; The inner side edge of said first backer's parts has the corresponding to shape of part outline with expectation; The outer side edges of said second backer's parts has the shape complementary mutually with the part outline of expectation, and the gap between said first backer's parts and the said second backer's parts forms cutting channel, and said cutting channel is used to guide cutting tool perpendicular to part part to be cut within it.
This cutting fixture is provided with fixture, is used for fixing said first backer's parts or said second backer's parts.For example, the part under first backer's parts partly is a useful part, then on the support plinth outer, anchor clamps etc. is set, with fixing first backer's parts; And the part under second backer's parts partly is under the situation of nonuseable part, can on this part part and second backer's parts, fixing hole be set correspondingly, and utilize latch to fix, and second backer's parts are pressed against on the part thus.
In addition, the invention still further relates to a kind of cutting method of using above-mentioned cutting fixture that part is cut, it comprises step:
A. part to be cut is fixed on the support plinth;
B. on said part, fix one first backer's parts, the inner side edge of said first backer's parts has the corresponding to shape of outline with the part of expecting;
C. on said part, fix one second backer's parts, the outer side edges of said second backer's parts has the shape complementary mutually with the outline of the part of expecting, the gap between said first backer's parts and the said second backer's parts forms cutting channel;
D. perpendicular to part part is cut along said cutting channel by cutting tool.
Preferably, before cutting, choose the lining that adapts with the cutting channel size, said cutting tool is fixed in the said lining by cutting tool.
Distance delta between the outline of said first backer's accessories and parts equals difference half the of diameter of phi of gap width m and the said cutting tool of said cutting channel, i.e. 1/2 (m-Φ)=σ.
Preferably, use pneumatic cutting tool that part is cut.The blade diameter of said cutting tool is 8mm, and the size of said cutting channel is 17
0 + 0.2Mm.
Beneficial effect of the present invention is: owing on the cutting fixture, adopt two backer's structures that cutting tool is cut between two backers, and do not have movably space.Thereby, compare and can avoid the lifts phenomenon effectively with traditional mountain cutting method of depending merely on.Simultaneously, the cutting angle when two backers' structure has also been fixed cutting with the lining that matches has guaranteed that angle remains normal orientation between cutting tool and the part.Compare with monolateral backer's cutting method, such structure reduces the probability of scrapping of part, and makes the security of operation obtain improving effectively.
Description of drawings
Come to explain in more detail the present invention below with reference to accompanying drawings, wherein:
Fig. 1 is the side view of cutting fixture according to a preferred embodiment of the invention;
Fig. 2 is the vertical view of cutting fixture according to a preferred embodiment of the invention;
Fig. 3 is the local amplification view of cutting fixture according to a preferred embodiment of the invention, and part wherein to be cut is fixed on the cutting fixture.
Description of reference numerals
100 cutting fixtures
10 support plinths
20 first backer's parts, 21 inner side edges
30 second backer's parts, 31 outer side edges
40 pressing plates
50 cutting channels
60 cutting tools
70 linings
200 parts to be cut
The specific embodiment
Fig. 1 shows the side view of cutting fixture 100 according to a preferred embodiment of the invention, and Fig. 2 shows the vertical view of cutting fixture 100.Wherein, this cutting fixture 100 comprises support plinth 10, and it is used to support and fixing part 200 (see figure 3)s to be cut, can use anchor clamps or other any fixture.This cutting fixture 100 also comprises first backer's parts 20 and second backer's parts 30, is used to press part to be cut.Wherein, the inner side edge 21 of first backer's parts 20 has the corresponding to shape of part outline with expectation, and the outer side edges 31 of second backer's parts 30 has the shape complementary mutually with the part outline of expectation.First backer's parts 20 and second backer's parts 30 are rotatably installed on the support plinth 10, and can use pressing plate 40 or other device to be fixed on the support plinth 10.When first backer's parts 20 and second backer's parts 30 compress part to be processed 200, and be fixed on 10 last times of support plinth, have a gap between first backer's parts 20 and the second backer's parts 30.This gap forms the cutting channel 50 of cutting tool 60, is used to guide cutting tool 60 perpendicular to part part to be cut within it.。
As shown in Figure 3, the distance delta between the outline of first backer's parts 20 and part equals difference half the of diameter of phi of gap width m and the said cutting tool 60 of said cutting channel 50, i.e. 1/2 (m-Φ)=σ.For example, when the blade diameter of said cutting tool is 8mm, the size of said cutting channel is 17mm, and this moment, σ was 4.5mm.
Below, be example with the aircraft skin part shown in Fig. 2, the cutting method that 100 pairs of parts 200 of the above-mentioned cutting fixture of use according to the present invention cut at length is described, this method may further comprise the steps:
A. part to be processed 200 is fixed on the support plinth 10, for example uses anchor clamps etc.;
B. first backer's parts 20 are fixed on the part 200, for example use anchor clamps etc., the inner side edge 21 of these first backer parts 20 has the corresponding to shape of part outline with expectation;
C. second backer's parts 30 are fixed on the part 200, the outer side edges 31 of these second backer parts 30 has the shape complementary mutually with the part outline of expectation.Because the position and the shape of second backer's parts 30; Be not suitable for using anchor clamps to fix; Consider that the part under second backer's parts 30 partly is nonuseable part; So can on second backer's parts 30 and useless part part, correspondingly be provided with fixing hole, and fixing through latch etc., and the gap between first backer's parts 20 and the second backer's parts 30 forms cutting channel 50;
D. cut along 50 pairs of parts of cutting channel by cutting tool 60, cutting tool 60 can adopt pneumatic cutting tool, also can select other any suitable cutting tool for use.
Vertical all the time between the cutting tool and part in order to guarantee in cutting process, the lining 70 of in cutting channel 50, packing into, the size of lining is chosen according to the size of cutting channel 50, makes the size of lining and the size of passage adapt.Usually, the diameter of lining is than the little 0.2-0.3mm of spacing of passage.Then, cutting tool is fixed on the center of lining 70, for example through being threaded etc.Can be provided with projection on the circumference of lining 70, be used for against first backer's parts and second backer's parts.During cutting, cutting tool 60 cuts along cutting channel 50 under the guiding function of lining 70.Because the restriction of first backer's parts and second backer's parts, cutting tool 60 can not produce in cutting channel 50 beats, and keeps cutting perpendicular to part, thereby has guaranteed cutting angle.
On the cutting edge of cutting tool, adopt bilateral pattern promptly all to have backing on the line of cut both sides, the purpose of design is the smooth cutting that guarantees cutting tool like this.The lining that matches with two backers' spacing is installed on the head of cutting tool on the other hand; The purpose of design is to make cutting tool can guarantee that cutting angle is the normal orientation of part curved surface all the time like this, avoids because the inclination of cutting tool causes accessory size inaccurate.The cutting surface of the part of cutting can be mated with other parts well according to the method for the invention, satisfies instructions for use.
Though the present invention discloses preferred embodiment as above; Right its is not in order to limiting the present invention, anyly has the knack of this art, do not breaking away from the spirit and scope of the present invention; When can doing various changes and retouching, so protection scope of the present invention should be as the criterion with the claim scope of applying for a patent.
Claims (6)
1. the cutting fixture of a sheet part; It comprises support plinth; Said support plinth is used to support and fixing part to be cut; It is characterized in that said cutting fixture also comprises first backer's parts and the second backer's parts that rotatably are installed on the support plinth, is used to compress part to be cut; The inner side edge of said first backer's parts has the corresponding to shape of part outline with expectation; The outer side edges of said second backer's parts has the shape complementary mutually with the part outline of expectation, and the gap between said first backer's parts and the said second backer's parts forms cutting channel, and said cutting channel is used to guide cutting tool perpendicular to part part to be cut within it; This cutting fixture is provided with fixture, is used for said first backer's parts or said second backer's parts are fixed on part.
2. the cutting method of a sheet part, it comprises step:
A. part to be cut is fixed on the support plinth;
B. on said part, fix one first backer's parts, the inner side edge of said first backer's parts has the corresponding to shape of outline with the part of expecting;
C. on said part, fix one second backer's parts, the outer side edges of said second backer's parts has the shape complementary mutually with the outline of the part of expecting, the gap between said first backer's parts and the said second backer's parts forms cutting channel;
D. perpendicular to part part is cut along said cutting channel by cutting tool.
3. cutting method according to claim 2 is characterized in that, before cutting by cutting tool, chooses the lining that adapts with the cutting channel size, and said cutting tool is fixed in the said lining.
4. cutting method according to claim 2 is characterized in that, the distance delta between the outline of said first backer's accessories and parts equals difference half the of diameter of phi of gap width m and the said cutting tool of said cutting channel, i.e. 1/2 (m-Φ)=σ.
5. cutting method according to claim 2 is characterized in that, uses pneumatic cutting tool that part is cut.
6. cutting method according to claim 2; It is characterized in that; The blade diameter of said cutting tool is 8mm, and the size of said cutting channel is
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910055651XA CN101987377B (en) | 2009-07-30 | 2009-07-30 | Cutting and fixing device and cutting method of sheet part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910055651XA CN101987377B (en) | 2009-07-30 | 2009-07-30 | Cutting and fixing device and cutting method of sheet part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101987377A CN101987377A (en) | 2011-03-23 |
| CN101987377B true CN101987377B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910055651XA Active CN101987377B (en) | 2009-07-30 | 2009-07-30 | Cutting and fixing device and cutting method of sheet part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101987377B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574667A (en) * | 1983-05-23 | 1986-03-11 | Harris Robert E | Method for cutting sheet metal |
| DE4137808A1 (en) * | 1991-11-16 | 1993-05-19 | Erhard Weisshaar | DEVICE FOR CUTTING PIPES |
| CN201227699Y (en) * | 2008-06-13 | 2009-04-29 | 季约德 | Profiled purlin cutting device of cold bended mold press |
-
2009
- 2009-07-30 CN CN200910055651XA patent/CN101987377B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574667A (en) * | 1983-05-23 | 1986-03-11 | Harris Robert E | Method for cutting sheet metal |
| DE4137808A1 (en) * | 1991-11-16 | 1993-05-19 | Erhard Weisshaar | DEVICE FOR CUTTING PIPES |
| CN201227699Y (en) * | 2008-06-13 | 2009-04-29 | 季约德 | Profiled purlin cutting device of cold bended mold press |
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| Publication number | Publication date |
|---|---|
| CN101987377A (en) | 2011-03-23 |
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