CN110293244A - The deep hole drill method of tiny thin-wall part - Google Patents
The deep hole drill method of tiny thin-wall part Download PDFInfo
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- CN110293244A CN110293244A CN201910534796.1A CN201910534796A CN110293244A CN 110293244 A CN110293244 A CN 110293244A CN 201910534796 A CN201910534796 A CN 201910534796A CN 110293244 A CN110293244 A CN 110293244A
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- drill bit
- drill
- deep hole
- drilling
- wall part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/02—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for boring deep holes; Trepanning, e.g. of gun or rifle barrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses the deep hole drill methods of tiny thin-wall part, which comprises the steps of: step SS1: being felt relieved using pilot drill to product, sets drilling depth and keep for next drill bit machining allowance；Step SS2: drill bit drills to product in use, controls drilling depth and keeps for next drill bit machining allowance；Step SS3: drilling to product using long drill bit, controls drilling depth and reserves unilateral surplus.There are drill bit line footpaths than too long for the processing of existing pilot drill by the present invention, and after drill bit trembles, hole is very easy to the technical issues of occurring to bore eccentric, broken wall and fracture, the drill bit processing technology of the thin-walled parts of the small long line footpath ratio of proposition；Technique of the invention is by so that solving micro-bit thin wall and deep hole bores easy bias, twining bits, the technical problems such as drill bit easy fracture from cutting tool choice, revolving speed, feeding, the control of cutting output and the pre- allowance of cutting, method that drilling cuttings is fed etc. optimization technique.
Description
Technical field
The present invention relates to a kind of deep hole drill methods of tiny thin-wall part, belong to technical field of mechanical processing.
Background technique
As shown in figure 4, being to process rear material using pilot drill to remove part Cheng Yuan for traditional drilling processing technique
Taper；Then as shown in figure 5, reserving cone after pilot drill processing, cause drill bit processing at aperture and material, stress
Become larger suddenly, since drill bit line footpath is than too long, after drill bit trembles, hole is very easy to occur to bore eccentric, broken wall and fracture
The problem of.As shown in Fig. 6 traditional feed schematic diagram, specific numerical control feed technique is: G0X0Y0Z15T31；G0Z0.2；
G83Z-7.0Q10000F0.01；1, G83 (deep hole pecks brill)；2, Z-7.0 (drilling depths)；3, G0Z0.2 (from workpiece surface away from
From)；4, F (feed of every rotation)；5, Q (depth of each drilling).
This feed mode drill bit has drilling cuttings residual, so as to cause drilling secondary cutting；The above G83 pecks drill jig formula advance and retreat knife
For G0 fast feed.This feed mode, which will lead to drilling cuttings and remain on drill bit, leads to the secondary cutting that drills, this is to influence small brill
The key factor of hole bias and Drill Crack.
Summary of the invention
It is an object of the present invention to overcome defect of the existing technology, above-mentioned technical problem is solved, is proposed a kind of small
The deep hole drill method of thin-walled parts.
The present invention adopts the following technical scheme: the deep hole drill method of tiny thin-wall part, which is characterized in that including as follows
Step:
Step SS1: feeling relieved to product using pilot drill, sets drilling depth and keeps for next drill bit processing
Surplus；
Step SS2: drill bit drills to product in use, controls drilling depth and keeps for more than next drill bit processing
Amount；
Step SS3: drilling to product using long drill bit, controls drilling depth and reserves unilateral surplus.
As a kind of preferred embodiment, described in the step SS1 sets drilling depth and specifically includes: drill bit list
The secondary depth of cut is the 35%~85% of bit diameter.
A kind of machining allowance as preferred embodiment, in the step SS1 are as follows: 0.01~0.07mm.
As a kind of preferred embodiment, the control drilling depth in the step SS2 is specifically included: middle drill bit list
The secondary depth of cut is the 45%~80% of bit diameter.
A kind of machining allowance as preferred embodiment, in the step SS2 are as follows: 0.01~0.07mm；Guarantee
Middle drill bit under the lesser state of stress completely into hole, thus effectively in control drill bit trembling, when stress increases, in
Drill bit adjacent material has formed encirclement, and middle drill bit is made to stablize drilling along fixed-direction.
As a kind of preferred embodiment, the control drilling depth in the step SS3 is specifically included: long drill bit list
The secondary depth of cut is the 40%~70% of long drill bit diameter.
As a kind of preferred embodiment, the unilateral surplus in the step SS3 is 0.01~0.07mm, guarantees length
Drill bit under the lesser state of stress completely into hole, to effectively control the trembling of long drill bit；When stress increases, jumping chisel
Head adjacent material has formed encirclement, and long drill bit is made to stablize drilling along fixed-direction.
Advantageous effects of the invention: the present invention causes to bore for cone is reserved after the processing of existing pilot drill
At aperture and material, there are stress to become larger suddenly for head processing, since drill bit line footpath is than too long, after drill bit trembles,
Hole is very easy to the technical issues of occurring to bore eccentric, broken wall and fracture, proposes the drill bit of the thin-walled parts of small long line footpath ratio
Processing technology belongs to technical field of mechanical processing；Technique of the invention is by the way that from cutting tool choice, revolving speed is fed, cutting output and cutting
The control of pre- allowance, method of drilling cuttings feeding etc. optimization technique are easy bias to solve micro-bit thin wall and deep hole and bore,
It twines bits, the technical problems such as drill bit easy fracture, and the present invention and is capable of processing out most thin-walled thickness up to unilateral 0.03mm, depth 9mm's
Thin wall and deep hole product further passes through in control more than the processing of drill bit under the premise of pilot bit completes centering drilling function
Amount are as follows: 0.01~0.07mm；In guarantee drill bit under the lesser state of stress completely into hole, thus drill bit effectively in control
Trembling, when stress increase when, middle drill bit adjacent material has formed encirclements, make middle drill bit along fixed-direction stabilization drilling；It is logical
The unilateral surplus for crossing control long drill bit is 0.01~0.07mm, guarantees long drill bit under the lesser state of stress completely into hole
It is interior, to effectively control the trembling of long drill bit；When stress increases, long drill bit adjacent material has formed encirclement, makes long drill bit edge
Fixed-direction stablize drilling.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the main view of the preferred embodiment of tiny thin-wall part of the invention.
Fig. 2 is the structural schematic diagram of the F-F direction view of Fig. 1.
Fig. 3 is the structural schematic diagram of the perspective view of the preferred embodiment of tiny thin-wall part of the invention.
Fig. 4 is the structural schematic diagram of the process one of traditional drilling processing technique.
Fig. 5 is the structural schematic diagram of the process two of traditional drilling processing technique.
Fig. 6 is the structural schematic diagram of the process three of traditional drilling processing technique.
Fig. 7 is structural schematic diagram of the present invention using pilot bit processing.
Fig. 8 is the structural schematic diagram of drill bit processing during the present invention uses.
Fig. 9 is structural schematic diagram of the present invention using long drill bit processing.
Figure 10 is the numerical control processing structural schematic diagram of gun drilling of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, the product line footpath for the tiny thin-wall part that the present invention is directed to is than long, and wall is thin, and structure is multiple
It is miscellaneous.
The present invention adopts the following technical scheme: the deep hole drill method of tiny thin-wall part, which is characterized in that including as follows
3 steps.
As shown in fig. 7, step SS1: being felt relieved using pilot drill to product, set drilling depth and keep for next
Branch drill bit machining allowance；As a kind of preferred embodiment, described in the step SS1 sets drilling depth and specifically wraps
Include: the drill bit single depth of cut is the 35%~85% of bit diameter；As a kind of preferred embodiment, in the step SS1
The machining allowance are as follows: 0.01~0.07mm.
As shown in figure 8, step SS2: drill bit drills to product in use, controls drilling depth and keeps for next
Drill bit machining allowance；As a kind of preferred embodiment, the control drilling depth in the step SS2 is specifically included: in
The drill bit single depth of cut is the 45%~80% of bit diameter.
A kind of machining allowance as preferred embodiment, in the step SS2 are as follows: 0.01~0.07mm；Guarantee
Middle drill bit under the lesser state of stress completely into hole, thus effectively in control drill bit trembling, when stress increases, in
Drill bit adjacent material has formed encirclement, and middle drill bit is made to stablize drilling along fixed-direction.
As shown in figure 9, step SS3: being drilled using long drill bit to product, control drilling depth and reserve unilateral remaining
Amount；As a kind of preferred embodiment, the control drilling depth in the step SS3 is specifically included: long drill bit single into
Knife amount is the 40%~70% of long drill bit diameter；A kind of unilateral surplus as preferred embodiment, in the step SS3
For 0.01~0.07mm, guarantee long drill bit under the lesser state of stress completely into hole, to effectively control long drill bit
Trembling；When stress increases, long drill bit adjacent material has formed encirclement, and long drill bit is made to stablize drilling along fixed-direction.
As shown in Figure 10, NC technology of the invention be with G1 mode drill, can be effectively controlled drill bit advance and retreat knife speed and
Withdrawing Z coordinate.So that drilling bits is easier to be cut liquid and is rinsed well, avoids secondary cutting.
Specific numerical control program is as follows: G0Y0T32D0；G0X0.0；G0Z0.5；G95G01Z0.2F0.1；G1Z0F0.003-G1
Cutting feed；G1Z2.0F0.15, G1 rapid return；G1Z0.1F0.06, G1 middling speed feed；G1Z-1.0F0.003；
G1Z2.0F0.15；G1Z-0.9F0.06；G1Z-2.0F0.003.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the deep hole drill method of tiny thin-wall part, which comprises the steps of:
Step SS1: feeling relieved to product using pilot drill, sets drilling depth and keeps for more than next drill bit processing
Amount；
Step SS2: drill bit drills to product in use, controls drilling depth and keeps for next drill bit machining allowance；
Step SS3: drilling to product using long drill bit, controls drilling depth and reserves unilateral surplus.
2. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS1
Described set drilling depth and specifically include: the drill bit single depth of cut is the 35%~85% of bit diameter.
3. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS1
The machining allowance are as follows: 0.01~0.07mm.
4. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS2
The control drilling depth specifically include: the middle drill bit single depth of cut be bit diameter 45%~80%.
5. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS2
The machining allowance are as follows: 0.01~0.07mm；In guarantee drill bit under the lesser state of stress completely into hole, to have
The trembling of drill bit in effect control, when stress increases, middle drill bit adjacent material has formed encirclement, makes middle drill bit along fixed-direction
Stablize drilling.
6. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS3
The control drilling depth specifically include: the long drill bit single depth of cut be long drill bit diameter 40%~70%.
7. the deep hole drill method of tiny thin-wall part according to claim 1, which is characterized in that in the step SS3
The unilateral surplus be 0.01~0.07mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534796.1A CN110293244B (en) | 2019-06-20 | 2019-06-20 | Deep hole drilling method for tiny thin-wall part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534796.1A CN110293244B (en) | 2019-06-20 | 2019-06-20 | Deep hole drilling method for tiny thin-wall part |
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| CN110293244A true CN110293244A (en) | 2019-10-01 |
| CN110293244B CN110293244B (en) | 2020-12-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774605A (en) * | 2020-06-30 | 2020-10-16 | 中船动力有限公司 | Deep hole drilling method on diesel engine frame |
| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN112372024A (en) * | 2020-08-27 | 2021-02-19 | 沈阳富创精密设备股份有限公司 | Method for machining deep hole with diameter more than 30 times by using inner-cooling drill bit |
| CN112975290A (en) * | 2021-02-28 | 2021-06-18 | 沈阳富创精密设备股份有限公司 | Machining process for machining spherical crossed hole with roughness Ra0.4 |
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| SU904895A2 (en) * | 1980-05-22 | 1982-02-15 | Севастопольский Приборостроительный Институт | Apparatus for working thin-walled cylindrical parts |
| CN1876295A (en) * | 2006-07-04 | 2006-12-13 | 中国南车集团戚墅堰机车车辆厂 | Thin wall processing technology and its special-purpose knife tool |
| CN101049641A (en) * | 2005-12-06 | 2007-10-10 | 玛格那吉·爱尔那提卡股份公司 | Method and device for processing deep hole and/or drilling bottle shaped hole |
| CN104723045A (en) * | 2015-03-24 | 2015-06-24 | 西安交通大学 | Machining process and tool for shaft with inner step hole with large depth-diameter ratio |
| CN205362791U (en) * | 2016-02-22 | 2016-07-06 | 成都优拓优联科技有限公司 | A composite drill bit for thin wall hole machining |
| CN107243719A (en) * | 2017-04-21 | 2017-10-13 | 长治清华机械厂 | A kind of thin-walled half-blindness and total blindness's small deep hole cylinder inboard wall processing method |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU904895A2 (en) * | 1980-05-22 | 1982-02-15 | Севастопольский Приборостроительный Институт | Apparatus for working thin-walled cylindrical parts |
| CN101049641A (en) * | 2005-12-06 | 2007-10-10 | 玛格那吉·爱尔那提卡股份公司 | Method and device for processing deep hole and/or drilling bottle shaped hole |
| CN1876295A (en) * | 2006-07-04 | 2006-12-13 | 中国南车集团戚墅堰机车车辆厂 | Thin wall processing technology and its special-purpose knife tool |
| CN104723045A (en) * | 2015-03-24 | 2015-06-24 | 西安交通大学 | Machining process and tool for shaft with inner step hole with large depth-diameter ratio |
| CN205362791U (en) * | 2016-02-22 | 2016-07-06 | 成都优拓优联科技有限公司 | A composite drill bit for thin wall hole machining |
| CN107243719A (en) * | 2017-04-21 | 2017-10-13 | 长治清华机械厂 | A kind of thin-walled half-blindness and total blindness's small deep hole cylinder inboard wall processing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774605A (en) * | 2020-06-30 | 2020-10-16 | 中船动力有限公司 | Deep hole drilling method on diesel engine frame |
| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN112372024A (en) * | 2020-08-27 | 2021-02-19 | 沈阳富创精密设备股份有限公司 | Method for machining deep hole with diameter more than 30 times by using inner-cooling drill bit |
| CN112975290A (en) * | 2021-02-28 | 2021-06-18 | 沈阳富创精密设备股份有限公司 | Machining process for machining spherical crossed hole with roughness Ra0.4 |
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| CN110293244B (en) | 2020-12-01 |
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Address after: No.70 Emeishan Road, science and Technology City, Suzhou high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Zhenyi Medical Co.,Ltd. Address before: No.70 Emeishan Road, science and Technology City, Suzhou high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU JENITEK PRECISION DEVICE Co.,Ltd. |
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