CN104014834B - Thin-wall conduit machining method - Google Patents
Thin-wall conduit machining method Download PDFInfo
- Publication number
- CN104014834B CN104014834B CN201410227040.XA CN201410227040A CN104014834B CN 104014834 B CN104014834 B CN 104014834B CN 201410227040 A CN201410227040 A CN 201410227040A CN 104014834 B CN104014834 B CN 104014834B
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- China
- Prior art keywords
- thin
- wallconduit
- wall conduit
- inner chamber
- blank
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Disclosed is a thin-wall conduit machining method. First, according to the geometrical shape of an inner cavity of a thin-wall conduit, a plurality of different specifications of tapered drill bits with 15-degree taper angles and a tapered drill bit with a 90-degree taper angle are manufactured; then, the tapered drill bits are used for roughly machining the inner cavity of the thin-wall conduit, stepped holes are avoided, finishing stock is made to be even, and thus cuttings can be discharged in time conveniently; meanwhile, when the appearance of the thin-wall conduit is machined, a central spindle which is matched with the inner cavity of the thin-wall conduit in geometrical shape is manufactured in advance, after the inner cavity of the thin-wall conduit is completely machined, the central spindle can be positioned through the geometrical shape of the inner cavity of the thin-wall conduit, and accordingly the appearance of the thin-wall conduit can be machined. According to the thin-wall conduit machining method, the finishing stock for machining the thin-wall conduit is even, a cutter can be evenly stressed, the service life of the cutter can be effectively prolonged, machining time is shortened, the central spindle is designed to be matched with the inner cavity of the thin-wall conduit in geometrical shape, hence, parts can be clamped conveniently, firmly and reliably, the coaxiality of the parts can be guaranteed, and therefore the product percent of pass is improved.
Description
Technical field
The present invention relates to catheter fabrication technical field, more particularly, to a kind of thin-wallconduit machining process.
Background technology
At present, conduit be machined with two ways: one is to adopt explosive forming, and two is using machining molding；Blast
The deficiency that molding mode exists: in blast process, 1, it is easily caused used burn failure even deform, 2, shaped article chi
Very little degree of accuracy is low can not be up to standard, and qualification rate is low, and causes the substantial amounts of waste of raw material；3rd, the range of application of explosive forming mode is deposited
In limitation, restricted by processed part material；Although overcome the deficiency of explosive forming using machining molding, pass
The drawbacks of system mechanical process technique has that process-cycle length, inefficiency, cutter loss be big, qualification rate is high.Especially
It is the processing for thin-wallconduit, its conduit cavity one end carries the taper deep hole of 15 ° of cone angles, and all wall thickness of whole conduit
It is only 2mm；During traditional handicraft processing thin-wallconduit inner chamber, roughing, the stepped hole of formation are carried out using the drill bit of different size
It is unfavorable for the polish of next step, simultaneously when processing conduit profile, processes using to top mode, because wall thickness allowances are uneven
Even, in the course of processing, cutter discontinuity, part is easily beated, cause the inner chamber of conduit with profile axiality it is difficult to ensure that, lead
Cause wall unevenness is even, and part by one-step passing rate of processing is low.
Content of the invention
Technical problem solved by the invention is to provide a kind of thin-wallconduit machining process, to solve above-mentioned background
Shortcoming in technology.
Technical problem solved by the invention employs the following technical solutions to realize:
Thin-wallconduit machining process, combines the geometry of thin-wallconduit inner chamber first, prepares multiple different sizes
The taper bit with 15 ° of cone angles and one carry 90 ° of cone angles taper bit, then using taper bit to thin-wallconduit
Inner chamber carries out roughing, it is to avoid stepped hole, makes allowance for finish uniformly, is easy to chip and discharges in time；Concurrently adding
During work thin-wallconduit profile, prepare the mandrel matching with thin-wallconduit inner chamber geometry in advance, treat that thin-wallconduit inner chamber adds
After work finishes, using thin-wallconduit inner chamber geometry positioning core axle so that process thin-wallconduit profile, it specifically comprises the following steps that
1) taper bit with 15 ° of cone angles of multiple different sizes and a taper bit carrying 90 ° of cone angles are prepared
And the mandrel matching with thin-wallconduit inner chamber geometry；
2) blind hole for φ 15 in thin-wallconduit blank one end processing aperture；
3) process the hole of aperture φ 15 until drilling through in the thin-wallconduit blank other end；
4) started using the taper bit with 15 ° of cone angles of preparation in step 1) and the taper bit with 90 ° of cone angles
Roughing is carried out to thin-wallconduit blank inner chamber；
5) after in step 4), thin-wallconduit blank embedded SMA actuators finish, the mandrel prepared in step 1) insertion thin-walled is led
Pipe blank inner chamber, is applied the mandrel positioning processing thin-wallconduit profile being matched with thin-wallconduit inner chamber geometry, obtains final product thin
Wall conduit.
In the present invention, described mandrel insertion thin-wallconduit blank inner chamber its one end is passed through and cap fastening, and the other end passes through
Nut fastens.
In the present invention, it is provided with taper locating surface in the middle part of described mandrel, and described taper locating surface one end is provided with card
Bar, the other end is provided with square groove, and in positioning processing thin-wallconduit profile, mandrel inserts thin-wallconduit blank inner chamber by card article,
Taper locating surface is nested in thin-wallconduit blank inner chamber, prevents thin-wallconduit blank from beating, and is conducive to improving passing rate of processing.
A kind of thin-wallconduit, its two ends is tubular structure, and centre is respectively arranged with 90 ° of taper cambered surfaces and 15 ° of taper cambered surfaces,
And 90 ° of taper cambered surface apertures are gradually decrease to be connected with 15 ° of taper cambered surfaces at flex point, 15 ° of taper cambered surface apertures at flex point by
Cumulative big until being connected with tubular structure.
Beneficial effect: present invention processing thin-wallconduit allowance for finish is uniform, cutter uniform force, not only effectively extends knife
The service life of tool, and shortens process time, and mandrel design matches so that zero with thin-wallconduit inner chamber geometry
Part convenient mounting and clamping, solid and reliable, part axiality is guaranteed, and then improves conforming product rate.
Brief description
Fig. 1 is the taper bit structural representation in the embodiment of the present invention with 15 ° of cone angles.
Fig. 2 is core shaft structure schematic diagram in the embodiment of the present invention.
Fig. 3 is thin-wallconduit structural representation in the embodiment of the present invention.
Marginal data: 1. taper locating surface；2. card article；3. square groove.
Specific embodiment
Describe the present invention below by specific examples below.
Referring to the thin-wallconduit machining process of Fig. 1, Fig. 2, Fig. 3, it specifically comprises the following steps that
1) prepare the taper bit with 15 ° of cone angles of 3 different sizes and a taper bit carrying 90 ° of cone angles and
The mandrel matching with thin-wallconduit inner chamber geometry；
2) it is about the blind hole of 90mm in thin-wallconduit blank one end processing aperture for φ 15 depth；
3) process the hole of aperture φ 15 until drilling through in the thin-wallconduit blank other end；
4) started using the taper bit with 15 ° of cone angles of preparation in step 1) and the taper bit with 90 ° of cone angles
Roughing is carried out to thin-wallconduit blank inner chamber；
5) after in step 4), thin-wallconduit blank embedded SMA actuators finish, the mandrel prepared in step 1) insertion thin-walled is led
Pipe blank inner chamber, is applied the mandrel positioning processing thin-wallconduit profile being matched with thin-wallconduit inner chamber geometry, obtains final product thin
Wall conduit；
6) it is to ensure the axiality of conduit and all wall thickness, profile is processed at one time using whole inner cavity positioning.
In the present embodiment, it is provided with taper locating surface 1 in the middle part of described mandrel, and the setting of described taper locating surface 1 one end
There is card article 2, the other end is provided with square groove 3, in positioning processing thin-wallconduit profile, mandrel inserts thin-wallconduit hair by card article 2
Base inner chamber, taper locating surface 1 is nested in thin-wallconduit blank inner chamber, prevents thin-wallconduit blank from beating, and is conducive to improving processing
Mandrel can be taken out, simple operation after completion of processing by qualification rate by square groove.
In the present embodiment, thin-wallconduit two ends are tubular structure, and centre is respectively arranged with 90 ° of taper cambered surfaces and 15 ° of cones
Shape cambered surface, and 90 ° of taper cambered surface apertures are gradually decrease to be connected with 15 ° of taper cambered surfaces at flex point, 15 ° of taper cambered surface apertures are from turning
It is gradually increased until being connected with tubular structure at point.
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (2)
1. thin-wallconduit machining process is it is characterised in that specifically comprise the following steps that
1) prepare the taper bit with 15 ° of cone angles of multiple different sizes and a taper bit carrying 90 ° of cone angles and with
The mandrel that thin-wallconduit inner chamber geometry matches；
2) blind hole for φ 15 in thin-wallconduit blank one end processing aperture；
3) process the hole of aperture φ 15 until drilling through in the thin-wallconduit blank other end；
4) started to thin using the taper bit with 15 ° of cone angles of preparation in step 1) and the taper bit with 90 ° of cone angles
Wall catheter blank inner chamber carries out roughing；
5) after thin-wallconduit blank embedded SMA actuators finish in step 4), the mandrel prepared in step 1) is inserted thin-wallconduit hair
Base inner chamber, is applied the mandrel positioning processing thin-wallconduit profile being matched with thin-wallconduit inner chamber geometry, obtains final product thin-walled and lead
Pipe.
2. thin-wallconduit machining process according to claim 1 is it is characterised in that described mandrel inserts thin-wallconduit
Blank inner chamber its one end is passed through and cap fastening, and the other end is fastened by nut.
3. thin-wallconduit machining process according to claim 1 is it is characterised in that be provided with the middle part of described mandrel
Taper locating surface, and described taper locating surface one end is provided with card article, the other end is provided with square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410227040.XA CN104014834B (en) | 2014-05-27 | 2014-05-27 | Thin-wall conduit machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410227040.XA CN104014834B (en) | 2014-05-27 | 2014-05-27 | Thin-wall conduit machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104014834A CN104014834A (en) | 2014-09-03 |
| CN104014834B true CN104014834B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410227040.XA Active CN104014834B (en) | 2014-05-27 | 2014-05-27 | Thin-wall conduit machining method |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1158114A (en) * | 1997-08-25 | 1999-03-02 | Bando Chem Ind Ltd | Center drill and working method for pin point gate using it |
| CN1194827C (en) * | 2002-09-02 | 2005-03-30 | 戚玉坤 | Method for processing thin wall pipefittings with changed diameter |
| CN101596695B (en) * | 2009-07-10 | 2011-05-18 | 张志强 | Fixture for grinding processing ultra-thin wall parts |
| CN201863007U (en) * | 2010-10-25 | 2011-06-15 | 上海海事大学 | Internal processing mandrel for annular thin-wall parts |
| CN201862802U (en) * | 2010-11-09 | 2011-06-15 | 强胜精密机械(苏州)有限公司 | Inner expansion type positioning clamp |
| CN102248204A (en) * | 2011-06-21 | 2011-11-23 | 潍柴动力股份有限公司 | Cutter and method for machining special deep hole |
| CN102814519A (en) * | 2012-05-03 | 2012-12-12 | 沈阳富创精密设备有限公司 | Internal expansion tool for mechanical processing |
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2014
- 2014-05-27 CN CN201410227040.XA patent/CN104014834B/en active Active
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| CN104014834A (en) | 2014-09-03 |
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