CN105728772B - The method of high position precision deep hole on processing diesel engine connecting rod - Google Patents
The method of high position precision deep hole on processing diesel engine connecting rod Download PDFInfo
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- CN105728772B CN105728772B CN201610318370.9A CN201610318370A CN105728772B CN 105728772 B CN105728772 B CN 105728772B CN 201610318370 A CN201610318370 A CN 201610318370A CN 105728772 B CN105728772 B CN 105728772B
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- hole
- diesel engine
- engine connecting
- connecting rod
- high position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
A kind of method for high position precision deep hole on processing diesel engine connecting rod is provided, first use drill gun processing bolt hole, it is ensured that the positional precision between Kong Yukong, then bolt hole is worked into technological requirement size with reamer, ensure hole surface roughness, so as to ensure product quality and processing efficiency.Using the present invention without manually polishing again, process and cost of labor are not only saved, operating efficiency is also greatly enhanced, with very high practical value.
Description
Technical field
The invention belongs to machining technology field, and in particular to it is deep that one kind is used for high positional precision on processing diesel engine connecting rod
The method in hole.
Background technology
There are 4 bolts hole on certain diesel engine connecting rod, aperture is φ 20.6mm, and hole depth 192mm, the draw ratio in hole is larger,
Position accuracy demand between surface roughness requirements Ra3.2, each hole is higher, and entrance and exit is existing within ± 0.05mm
There is processing method to be：Equipment choosing horizontal Machining centers, machining center has interior cold function, and pressure will reach 40Kg,
Installs fixture on the workbench of horizontal Machining centers, connecting rod is installed on fixture, is clamped after accurate positioning.Processed with drill gun
Before, four centre bores are first processed on connecting rod with centre drill, then four depth 25mm shallow bore hole is processed with φ 20mm drill bits, then
With boring cutter by four hole borings to φ 20.6mm, as the bullport of drill gun, then with drill gun processing bolt hole.Although this method
The positional precision in hole is can guarantee that, but is due to that connecting rod selected materials toughness is preferable, the iron filings that drill gun is produced are longer, after easily processing
Bolt hole pull, it is impossible to reach the requirement of surface roughness Ra 3.2, the method that polish by hand can only be beaten after drill gun processing
Bolt hole is ground, specific method is：A pole is clamped with electric hand drill, pole slotted head is wrapped with after emery cloth in groove, by pole
It is put into bolt hole, electric hand drill polishing bolt hole.The technology used now is considered to ensure the surface quality of bolt hole, knife
The amount of feeding of tool is very low, only 0.02mm/r, and processing efficiency is low；If the ratio that iron filings pull bolt hole is more serious, beat by hand
Grinding and polishing light quantity is big, even if can not eliminate scar beyond the margin of tolerance by what aperture size was polished, then can cause to produce bad production
Product, quality can not be guaranteed, it is therefore necessary to propose to improve.
The content of the invention
Present invention solves the technical problem that：A kind of side for high position precision deep hole on processing diesel engine connecting rod is provided
Method, first with drill gun processing bolt hole, it is ensured that the positional precision between Kong Yukong, then with reamer by bolt hole is worked into technological requirement
Size, it is ensured that hole surface roughness, so as to ensure product quality and processing efficiency.
The technical solution adopted by the present invention：The method of high position precision deep hole on processing diesel engine connecting rod, including under
State step：
1) horizontal Machining centers of the selection with interior cold function, and require that the pressure of interior cold function reaches more than 40kg；
2) installs fixture on the workbench of horizontal Machining centers, diesel engine connecting bar is installed on the fixture and positions standard
Clamped after really；
3) four centre bores are first processed according to process requirement on diesel engine connecting bar with centre drill, then with drill bit with
Centre bore is that bullport processes four shallow bore holes, finally with boring cutter by the diameter boring of four shallow bore holes to suitable dimension and to rear process
Stay appropriate surplus；
4) bolt hole for meeting technological requirement is processed by bullport of shallow bore hole with drill gun；
5) deep hole for meeting technological requirement is processed with reamer by bullport of bolt hole.
Above-mentioned steps 3) in, four centers are first processed on diesel engine connecting bar according to process requirement with centre drill
Hole, then four depth 25mm shallow bore hole is processed with φ 20mm drill bits by bullport of centre bore, finally with boring cutter by four shallow bore holes
Diameter boring to φ 20.3mm；
Above-mentioned steps 4) in, φ 20.3mm bolts hole are processed by bullport of φ 20.3mm shallow bore holes with drill gun；
Above-mentioned steps 5) in, φ 20.6mm deep holes are processed with reamer by bullport of bolt hole.
Above-mentioned steps 4) in, the amount of feeding of the drill gun is 0.08-0.1mm/r；
Above-mentioned steps 4) in, the drill gun is standard drill gun structure, a diameter of φ 20.3mm of drill gun, to follow-up fraising technique
Stay 0.3mm or so surpluses；
Above-mentioned steps 5) in, the reamer use six sword structures, and reamer centre provided be easy to come from lathe master
The coolant of axle flows to the interior cold hole of cutter head.
Above-mentioned steps 5) in, the rear portion of the reamer, which is provided with, to be used to support reamer and ensures the guiding of processing hole linearity
Bar.
Above-mentioned steps 4) in, it is 191 ± 0.05mm to ensure the positional precision between four φ 20.3mm bolts hole with drill gun.
Above-mentioned steps 5) in, the surface roughness of the deep hole is Ra3.2 microns.
The advantage of the present invention compared with prior art：
1st, this method principle is simple, can promote solution Similar Problems.
2nd, original drill gun processing hole is that the amount of feeding is transferred into 0.02mm/r just preferable surface effect, and efficiency is very
It is low；Need not reduce the amount of feeding to ensure surface roughness using drill gun after this programme, by the normal amount of feeding 0.08~
0.1mm/r is processed；
3rd, reamer is six sword reamers, and efficiency high, the combination of two kinds of cutters only uses drill gun efficiency high than original；
4th, drill gun and reamer with the use of the position degree and the surface roughness of screw thread that ensure that deep hole, and by two kinds of knives
The advantage of tool combines to form optimal working ability.
Embodiment
A kind of embodiment of the present invention is described below.
The method of high position precision deep hole, comprises the steps on processing diesel engine connecting rod：
1) horizontal Machining centers of the selection with interior cold function, and require that the pressure of interior cold function reaches more than 40kg；
2) installs fixture on the workbench of horizontal Machining centers, diesel engine connecting bar is installed on the fixture and positions standard
Clamped after really；
3) four centre bores are first processed on diesel engine connecting bar according to process requirement with centre drill, then uses φ 20mm
Drill bit processes four depth 25mm shallow bore hole by bullport of centre bore, finally with boring cutter by the diameter boring of four shallow bore holes to φ
20.3mm；
4) φ 20.3mm bolts hole are processed by bullport of φ 20.3mm shallow bore holes with drill gun；Specifically, the drill gun is
Standard drill gun structure, a diameter of φ 20.3mm of drill gun stay 0.3mm or so surpluses to follow-up fraising technique, four are ensured with drill gun
Positional precision between φ 20.3mm bolts hole is 191 ± 0.05mm, and the amount of feeding of drill gun is 0.08-0.1mm/r；
5) φ 20.6mm deep holes are processed with reamer by bullport of bolt hole, the reamer uses six sword structures, and
Reamer centre, which is provided with, is easy to the coolant from machine tool chief axis to flow to cold hole in cutter head；The rear portion of reamer, which is provided with, is used for branch
Hold reamer and ensure the gib block of processing hole linearity, the surface roughness of final deep hole can reach Ra3.2 microns.Without people
Work is polished again, is not only saved process and cost of labor, is also drastically increased operating efficiency.
Above-described embodiment, simply presently preferred embodiments of the present invention, not for limiting the scope of the present invention, thus it is all with this
The equivalence changes that content described in invention claim is done, all should be included within scope of the invention as claimed.
Claims (10)
1. the method for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that comprise the steps：
1) horizontal Machining centers of the selection with interior cold function, and require that the pressure of interior cold function reaches more than 40kg；
2) installs fixture on the workbench of horizontal Machining centers, diesel engine connecting bar is installed on the fixture after accurate positioning
Clamp；
3) four centre bores are first processed on diesel engine connecting bar according to process requirement with centre drill, then with drill bit with center
Hole is that bullport processes four shallow bore holes, finally by the diameter boring of four shallow bore holes to suitable dimension and stays suitable to rear process with boring cutter
Work as surplus；
4) bolt hole for meeting technological requirement is processed by bullport of shallow bore hole with drill gun；
5) deep hole for meeting technological requirement is processed with reamer by bullport of bolt hole.
2. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 3) in, four centre bores are first processed on diesel engine connecting bar according to process requirement with centre drill, then use φ
20mm drill bits process four depth 25mm shallow bore hole by bullport of centre bore, are finally arrived the diameter boring of four shallow bore holes with boring cutter
φ20.3mm。
3. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 4) in, φ 20.3mm bolts hole are processed by bullport of φ 20.3mm shallow bore holes with drill gun.
4. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 5) in, φ 20.6mm deep holes are processed with reamer by bullport of bolt hole.
5. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 4) in, the amount of feeding of the drill gun is 0.08-0.1mm/r.
6. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 4) in, the drill gun is standard drill gun structure, and a diameter of φ 20.3mm of drill gun stay 0.3mm to follow-up fraising technique
Left and right surplus.
7. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 5) in, the reamer uses six sword structures, and in reamer centre provided with being easy to the cooling from machine tool chief axis
Liquid flows to the interior cold hole of cutter head.
8. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 5) in, the rear portion of the reamer, which is provided with, to be used to support reamer and ensures the gib block of processing hole linearity.
9. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, it is characterised in that：
Above-mentioned steps 4) in, it is 191 ± 0.05mm to ensure the positional precision between four φ 20.3mm bolts hole with drill gun.
10. the method according to claim 1 for high position precision deep hole on processing diesel engine connecting rod, its feature exists
In：Above-mentioned steps 5) in, the surface roughness of the deep hole is Ra3.2 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318370.9A CN105728772B (en) | 2016-05-13 | 2016-05-13 | The method of high position precision deep hole on processing diesel engine connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318370.9A CN105728772B (en) | 2016-05-13 | 2016-05-13 | The method of high position precision deep hole on processing diesel engine connecting rod |
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| Publication Number | Publication Date |
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| CN105728772A CN105728772A (en) | 2016-07-06 |
| CN105728772B true CN105728772B (en) | 2017-10-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414117B (en) * | 2017-07-28 | 2019-12-27 | 宁波市北仑辉旺铸模实业有限公司 | Drilling process for deep hole machining of hard material |
| CN107953110B (en) * | 2017-10-13 | 2019-03-01 | 上海中船三井造船柴油机有限公司 | Tool and method for the processing of diesel engine base base bearing screw hole |
| CN109550990A (en) * | 2018-09-10 | 2019-04-02 | 河源龙记金属制品有限公司 | The processing method in mould bases template fortune water hole |
| CN109550991A (en) * | 2018-09-27 | 2019-04-02 | 河源龙记金属制品有限公司 | Processing fortune water hole method and mould bases in a kind of template |
| CN111215853A (en) * | 2020-02-10 | 2020-06-02 | 重庆机床(集团)有限责任公司 | Machining device and machining method for machining high-precision deep and long holes |
| CN111347090B (en) * | 2020-04-07 | 2021-08-06 | 四川源维机械科技有限公司 | Method for machining deep holes in a control surface assembly |
| CN112276141A (en) * | 2020-09-04 | 2021-01-29 | 广州锻造一厂股份有限公司 | Deep hole machining method for large-sized forged part |
| CN113927469B (en) * | 2021-10-20 | 2024-05-24 | 陕西柴油机重工有限公司 | Method for controlling strengthening shot peening deformation of large end inner hole of marine diesel engine connecting rod |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07223107A (en) * | 1994-02-14 | 1995-08-22 | Taisei Kogyosho:Kk | Holing position determining device |
| CN101462178B (en) * | 2008-12-30 | 2010-10-20 | 武汉重工铸锻有限责任公司 | Tool and method for processing half-speed machine crankshaft |
| CN101733441B (en) * | 2010-02-06 | 2011-06-22 | 乐清市华东仪表厂 | Numerical control high-effective deep hole gun drill |
| CN202964203U (en) * | 2012-12-03 | 2013-06-05 | 上海宁远精密机械有限公司 | Fixture used for processing engine connecting rod oil hole |
| CN104907766B (en) * | 2014-03-15 | 2017-08-01 | 陕西柴油机重工有限公司 | A kind of GT processing method of connecting rod |
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