CN106425296B - A kind of processing method of SiCp/Al composite shaft class part end face thin wall small hole screw thread - Google Patents
A kind of processing method of SiCp/Al composite shaft class part end face thin wall small hole screw thread Download PDFInfo
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- CN106425296B CN106425296B CN201610892531.5A CN201610892531A CN106425296B CN 106425296 B CN106425296 B CN 106425296B CN 201610892531 A CN201610892531 A CN 201610892531A CN 106425296 B CN106425296 B CN 106425296B
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- hole wall
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- hole
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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
Abstract
The processing method that the present invention proposes a kind of SiCp/Al composite shaft class part end face thin wall small hole screw thread, a part of drill thrust and tapping torque are mainly carried by design clamping tooling, the stress for reducing hole wall avoids the problem that at most thin hole wall fragmentation due to stress excessive bearing strength more than hole wall；Reduce drill thrust and tapping torque with CVD coated drill and straight trough hard material TICN coated taps；Optimize the realization SiCp/Al composite shaft class part end face aperture screw thread such as drilling processing technological parameter and hole wall and part edge apart from lesser processing.The beneficial effects of the invention are as follows the axis direction fragmentations solved the problems, such as directly in axial end drilling processing at most thin hole wall along hole, and hole wall is due to excessive by torque the phenomenon that chipping when solving tapping processing.The present invention is suitable for the processing of all axial workpiece end faces aperture and hole wall and axial wall apart from smaller parts.
Description
Technical field
The present invention relates to field of machining, specially a kind of advanced composite material (ACM) SiCp/Al composite material axial workpiece
The processing method of end face thin wall small hole screw thread.
Background technique
Enhancing aluminum-base composite material by silicon carbide particles (SiCp/Al) is a kind of advanced composite material (ACM), has high specific strength, height
Elasticity modulus, the advantages that high temperature resistant, wear-resistant, thermal expansion coefficient is small, diamagnetic shock resistance is good, good stability of the dimension navigate in aviation
The application prospect in its field is very wide.However due to Al alloy substrate and the completely different physics of SiC particulate reinforcement, mechanics
Performance causes SiCp/Al composite material to become typical difficult-to-machine material.Especially for axial workpiece end face aperture screw thread and
When hole wall and part edge distance smaller (be less than 0.5mm), it is larger directly process drill thrust with common boring method, hole wall receiving
Strength reduction is easily collapsed by drill thrust, and processing hole is imperfect.The axial workpiece end face aperture of SiCp/Al composite material is machined
Technology becomes the key factor for influencing it in practical applications.
Summary of the invention
The present invention relates to a kind of SiCp/Al composite shaft class part end face aperture screw thread and hole wall and part edge distances
Lesser processing technology mainly carries a part of drill thrust and tapping torque by design clamping tooling, reduces hole wall
Stress, avoid the problem that at most thin hole wall fragmentation due to stress excessive bearing strength more than hole wall；With CVD coated drill and
Straight trough hard material TICN coated taps reduce drill thrust and tapping torque；Optimize drilling processing technological parameter etc. and realizes SiCp/Al
Composite shaft class part end face aperture screw thread and hole wall and part edge are apart from lesser processing.
The technical solution of the present invention is as follows:
A kind of processing method of the SiCp/Al composite shaft class part end face thin wall small hole screw thread, it is characterised in that:
The following steps are included:
Step 1: designing and process shaft parts clamping tooling, the shaft parts clamping tooling includes two and has semicircle groove
Grip block and the bolt that is connected and fixed two grip blocks；The semicircle groove size and shaft parts dimensional fits of grip block；Zero
Part axis clamping tooling semicircle groove and shaft parts are fitted close；
Step 2: attaching components on numerical control lathe machining center scroll chuck, after centering, vehicle part needs to process screw thread
The boss of hole side, axis, end face to desired size；
Step 3: shaft parts clamping tooling being mounted in the shaft parts for needing thread mill drilling one end, tooling semicircle groove
It is formed and is fitted close by tooling bolt clamping force with axis；
Step 4: point being carried out using CVD coated drill, bores thread Pilot hole to size, wherein once boring withdrawing after depth 0.5mm；
Step 5: part integrally being unloaded from machining center scroll chuck together with tooling, is applied with straight trough hard material TICN
Layer screw tap hand tapping cleans the tapping oil in threaded hole, completes entire processing flow to size.
Beneficial effect
The beneficial effects of the invention are as follows the axis sides solved directly in axial end drilling processing at most thin hole wall along hole
The problem of to fragmentation, hole wall is due to excessive by torque the phenomenon that chipping when solving tapping processing.The present invention is suitable for all axis
The processing of class part end face aperture and hole wall and axial wall apart from smaller parts.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is part shape schematic diagram of the invention；
Fig. 2 is tooling schematic shapes of the invention；
Fig. 3 is part shape of the invention and tooling schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
Enhancing aluminum-base composite material by silicon carbide particles (SiCp/Al) is a kind of advanced composite material (ACM), has high specific strength, height
Elasticity modulus, the advantages that high temperature resistant, wear-resistant, thermal expansion coefficient is small, diamagnetic shock resistance is good, good stability of the dimension navigate in aviation
The application prospect in its field is very wide.However due to Al alloy substrate and the completely different physics of SiC particulate reinforcement, mechanics
Performance causes SiCp/Al composite material to become typical difficult-to-machine material.Especially for axial workpiece end face aperture screw thread and
When hole wall and part edge distance smaller (be less than 0.5mm), it is larger directly process drill thrust with common boring method, hole wall receiving
Strength reduction is easily collapsed by drill thrust, and processing hole is imperfect.
To solve the above problems, the present invention proposes a kind of SiCp/Al composite shaft class part end face thin wall small hole screw thread
Processing method, a part of drill thrust and tapping torque are mainly carried by design clamping tooling, reduces the stress of hole wall, keeps away
Exempt from most thin hole wall due to the stress excessive bearing strength more than hole wall the problem of fragmentation；With CVD coated drill and the hard material of straight trough
Expect that TICN coated taps reduce drill thrust and tapping torque；Optimize drilling processing technological parameter etc. and realizes SiCp/Al composite material
Axial workpiece end face aperture screw thread and hole wall and part edge are apart from lesser processing.
Specific steps are as follows:
Step 1: shaft parts clamping tooling is designed and process, as shown in Fig. 2, the shaft parts clamping tooling includes two bands
The bolt for having the grip block of semicircle groove and being connected and fixed two grip blocks；The semicircle groove size and shaft parts ruler of grip block
Very little cooperation；Shaft parts clamping tooling semicircle groove can be fitted close with shaft parts；
Step 2: attaching components on numerical control lathe machining center scroll chuck, after centering, vehicle part needs to process screw thread
The boss of hole side, axis, end face to desired size；
Step 3: shaft parts clamping tooling being mounted in the shaft parts for needing thread mill drilling one end, tooling semicircle groove
It is formed and is fitted close by tooling bolt clamping force with axis；The cooperation of tooling and shaft parts is as shown in Figure 3；It is held since hole wall is relatively thin
Carrying intensity decline, fragmentation, tooling and axis are fitted close vulnerable to drill thrust, and drill thrust is transmitted in tooling by hole wall, can be subtracted
Small hole wall stress；
Step 4: point bores thread Pilot hole to size, since SiCp/Al composite material belongs to hard brittle material, using common hard
Matter alloy bit drilling, drilling axial force is excessive easily to cause broken drill and hole wall large area scaling-off and damage the quality in hole, because
This, the present invention bores after depth 0.5mm withdrawing using CVD coated drill and once to avoid the above problem；
Step 5: part being unloaded from machining center scroll chuck together with tooling whole (the two does not separate), uses straight trough
Hard material TICN coated taps hand tapping cleans the tapping oil in threaded hole, completes entire processing flow to size.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (1)
1. a kind of processing method of SiCp/Al composite shaft class part end face thin wall small hole screw thread, it is characterised in that: described thin
Wall aperture hole wall and axial workpiece Edge Distance are less than 0.5mm；Processing method the following steps are included:
Step 1: designing and process shaft parts clamping tooling, the shaft parts clamping tooling includes two folders for having semicircle groove
The bolt held block and be connected and fixed two grip blocks；The semicircle groove size and shaft parts dimensional fits of grip block；Shaft parts
Clamping tooling semicircle groove and shaft parts are fitted close；
Step 2: attaching components on numerical control lathe machining center scroll chuck, after centering, vehicle part needs thread mill drilling side
Boss, axis, end face to desired size；
Step 3: shaft parts clamping tooling being mounted in the shaft parts for needing thread mill drilling one end, tooling semicircle groove and axis
It is formed and is fitted close by tooling bolt clamping force；
Step 4: point being carried out using CVD coated drill, bores thread Pilot hole to size, wherein once boring withdrawing after depth 0.5mm；
Step 5: part integrally being unloaded from machining center scroll chuck together with tooling, with straight trough hard material TICN coating silk
Hand tapping is bored to size, the tapping oil in threaded hole is cleaned, completes entire processing flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892531.5A CN106425296B (en) | 2016-10-13 | 2016-10-13 | A kind of processing method of SiCp/Al composite shaft class part end face thin wall small hole screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892531.5A CN106425296B (en) | 2016-10-13 | 2016-10-13 | A kind of processing method of SiCp/Al composite shaft class part end face thin wall small hole screw thread |
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| Publication Number | Publication Date |
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| CN106425296A CN106425296A (en) | 2017-02-22 |
| CN106425296B true CN106425296B (en) | 2019-01-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107671495A (en) * | 2017-10-31 | 2018-02-09 | 上海航天设备制造总厂 | High-volume fractional SiCp/Al composite material structural member high-efficiency and precision processing methods |
| CN111037212B (en) * | 2019-11-26 | 2021-06-11 | 北京卫星制造厂有限公司 | Preparation method of high-volume-fraction aluminum-based silicon carbide composite material small-hole thread |
| CN111805172A (en) * | 2020-06-11 | 2020-10-23 | 北京航天控制仪器研究所 | Processing method for small threads of high-volume-fraction silicon carbide particle reinforced aluminum matrix composite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3939795A1 (en) * | 1989-12-01 | 1991-06-06 | Schmitt M Norbert Dipl Kaufm D | METHOD FOR PRODUCING A THREADED HOLE |
| JP2005131760A (en) * | 2003-10-31 | 2005-05-26 | Koyo Seiko Co Ltd | Ball screw groove machining tool and ball screw groove machining method |
| CN102941382B (en) * | 2012-11-26 | 2015-10-28 | 大连理工大学 | A kind of grinding hard brittle material aperture thread forming emery wheel |
| CN103537728B (en) * | 2013-10-10 | 2015-12-02 | 陕西航天导航设备有限公司 | A kind of method of machining small on aluminum matrix composite |
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