CN109128157A - A kind of production method of carbide thin round tube internal screw thread - Google Patents
A kind of production method of carbide thin round tube internal screw thread Download PDFInfo
- Publication number
- CN109128157A CN109128157A CN201811108149.6A CN201811108149A CN109128157A CN 109128157 A CN109128157 A CN 109128157A CN 201811108149 A CN201811108149 A CN 201811108149A CN 109128157 A CN109128157 A CN 109128157A
- Authority
- CN
- China
- Prior art keywords
- die sleeve
- plug
- screw thread
- round tube
- threaded mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/06—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of threaded articles, e.g. nuts
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Powder Metallurgy (AREA)
Abstract
The production method that the present invention discloses a kind of carbide thin round tube internal screw thread, include the following steps: Step 1: die-filling: threaded mandrel being inserted on the second plug first, the second plug and threaded mandrel are inserted into from die sleeve one end again and fixed with die sleeve, then hard alloy powder is added into die sleeve, the first plug is inserted in threaded mandrel from the die sleeve other end finally and is fixed with die sleeve, compacting tool set is formed；Step 2: screw thread is suppressed: the mold for installing hard alloy powder being put into dry bag cold isostatic press and is suppressed, when pressurization makes die sleeve circumference equilibrium be pressurized, and die sleeve both ends do not apply pressure；Step 3: demoulding, the second plug is first taken out from die sleeve and is detached from threaded mandrel, then threaded mandrel, threadingly tooth opposite direction is slowly screwed out, and is removed the first plug, is finally taken out the hard alloy round tube suppressed out of die sleeve；Step 4: sintering: obtaining band internal thread hard alloy round tube after the hard alloy round tube for suppressing internal screw thread is sintered.
Description
Technical field
The invention belongs to solid carbide thread manufacture fields, and in particular to a kind of production of carbide thin round tube internal screw thread
Method.
Background technique
Currently, the processing of hard alloy round tube internal screw thread generallys use machining, working efficiency is low, and process is numerous
It is trivial, and machining accuracy is not high.Chinese invention patent application CN107695618A discloses a kind of molding of carbide alloy screwed hole
Method, this method is using PEG as forming agent, and raw material generates mixture after adding alcohol to grind and being spray-dried, and mixture is again
By compression moulding, pass through CNC milling machine, lathe or machining center, using the dedicated tool of special material, accurate screw thread
Size calculates, and processing has the threaded hole of preset parameter on compacting base, and last sinter molding obtains required threaded hole.It should
Method will be machined out after hard alloy compression moulding, is processed by means such as CNC milling machines and is obtained threaded hole, this method work
Sequence is complicated, requires height to milling machine, processing efficiency is low.
Summary of the invention
The present invention is not high for existing hard alloy round tube internal thread machining precision and processing efficiency is low and sets to processing
It is standby to require the problems such as high, a kind of production method of carbide thin round tube internal screw thread is provided.
The present invention adopts the following technical solutions to achieve above-mentioned purpose:
A kind of production method of carbide thin round tube internal screw thread, which is characterized in that the internal screw thread pressure setting packet of use
The first plug, the second plug, threaded mandrel and die sleeve are included, in a state of use, the first plug, threaded mandrel, the second plug are all
It is concentric with die sleeve；The disc center of first plug and the second plug is equipped with round hole, and internal diameter is matched with threaded mandrel outer diameter,
First plug and the second plug are located at the both ends of die sleeve, and the both ends of fixed thread mandrel respectively, are arranged in threaded mandrel
There is thread；Using the process of internal screw thread pressure setting production internal screw thread: Step 1: die-filling: first inserting threaded mandrel
In the round holes of the second plug, then the second plug and threaded mandrel are inserted into from die sleeve one end and fixed with die sleeve, then to
Hard alloy powder is added in die sleeve, the first plug is inserted in threaded mandrel from the die sleeve other end finally and is fixed with die sleeve,
Form compacting tool set；Step 2: screw thread is suppressed: the mold for installing hard alloy powder being put into dry bag cold isostatic press and is carried out
Compacting, when pressurization, make die sleeve circumference equilibrium be pressurized, and die sleeve both ends do not apply pressure；Step 3: demoulding, first by the second plug from mould
It puts on taking-up and is detached from threaded mandrel, then threadingly tooth opposite direction slowly screws out threaded mandrel, removes the first plug, finally
The hard alloy round tube suppressed is taken out out of die sleeve；Step 4: sintering: will suppress the hard alloy round tube of internal screw thread into
Band internal thread hard alloy round tube is obtained after row sintering.
Preferably, die sleeve can be Rubber membrane cover using elastic die sleeve, elastic die sleeve, to guarantee circumferentially equal when compacting
Weigh stress.
Preferably, different directions can be set in the thread in threaded mandrel, thus, meet hard alloy round tube to non-
Mark the demand of screw thread.
The beneficial effects of the present invention are:
The present invention forms internal screw thread by compacting hard alloy powder, is not required to be machined out, easy to operate, machining accuracy
With it is high in machining efficiency, without the use of equipment such as complicated CNC milling machines, reduce processing cost.
Detailed description of the invention
Fig. 1 is the internal screw thread pressure setting knot used in a kind of production method of carbide thin round tube internal screw thread of the present invention
Composition.
In figure, the 1, first plug；2, hard alloy powder；3, die sleeve；4, threaded mandrel；5, thread；6, the second plug.
Specific embodiment
1 the present invention is described in detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of production method of carbide thin round tube internal screw thread, the internal screw thread pressure setting packet used
The first plug 1, the second plug 6, threaded mandrel 4 and die sleeve 3 are included, in a state of use, the first plug 1, threaded mandrel 4, second
Plug 6 is all concentric with die sleeve 3；The disc center of first plug 1 and the second plug 6 is equipped with round hole, internal diameter and thread core
The matching of 4 outer diameter of axis, the first plug 1 and the second plug 6 are located at the both ends of die sleeve 3, and the two of fixed thread mandrel 4 respectively
It holds, is provided with thread 5 in threaded mandrel 4.Suppress the process of internal screw thread: Step 1: die-filling: being first inserted in threaded mandrel 4
In the round hole of second plug 6, then the second plug 6 and threaded mandrel 4 are inserted into from 3 one end of die sleeve and fixed with die sleeve 3, then
Hard alloy powder 2 is added into die sleeve 3, is finally inserted in first stifled 1 in threaded mandrel 4 and and mould from 3 other end of die sleeve
Set 3 is fixed, forms compacting tool set；Step 2: screw thread is suppressed: it is cold etc. quiet that the mold for installing hard alloy powder 2 being put into dry bag
It is suppressed in press, when pressurization makes 3 circumference equilibrium of die sleeve be pressurized, and 3 both ends of die sleeve do not apply pressure；Step 3: demoulding, first will
Second plug 6 takes out from die sleeve 3 and is detached from threaded mandrel 4, then threadingly 5 opposite direction of tooth slowly screws out threaded mandrel 4,
The first plug 1 is removed, finally takes out the hard alloy round tube suppressed out of die sleeve 3；Step 4: sintering: in suppressing
The hard alloy round tube of screw thread obtains band internal thread hard alloy round tube after being sintered.
In the above-described embodiment, die sleeve 3 can be rubber die sleeve using elastic die sleeve, elastic die sleeve, guarantee hard
Along 3 circumference producing balanced forces of die sleeve when matter alloy tube body is pressurized.
In the above-described embodiment, different directions can be set in the thread 5 in threaded mandrel 4, thus, meet hard
Demand of the alloy round tube to nonstandard screw thread.
Claims (4)
1. a kind of production method of carbide thin round tube internal screw thread, which is characterized in that the internal screw thread pressure setting of use includes
First plug, the second plug, threaded mandrel and die sleeve, in a state of use, the first plug, threaded mandrel, the second plug all with
Die sleeve is concentric；The disc center of first plug and the second plug is equipped with round hole, and internal diameter is matched with threaded mandrel outer diameter, the
One plug and the second plug are located at the both ends of die sleeve, and the both ends of fixed thread mandrel respectively, are provided in threaded mandrel
Thread；Using the process of internal screw thread pressure setting production internal screw thread: Step 1: die-filling: being first inserted in threaded mandrel
In the round hole of second plug, then the second plug and threaded mandrel are inserted into from die sleeve one end and fixed with die sleeve, then to mould
Hard alloy powder is added in set, finally the first plug is inserted in threaded mandrel from the die sleeve other end and is fixed with die sleeve, shape
At compacting tool set；Step 2: screw thread is suppressed: the mold for installing hard alloy powder being put into dry bag cold isostatic press and is pressed
System, when pressurization, make die sleeve circumference equilibrium be pressurized, and die sleeve both ends do not apply pressure；Step 3: demoulding, first by the second plug from die sleeve
It is upper to take out and be detached from threaded mandrel, then threaded mandrel, threadingly tooth opposite direction is slowly screwed out, and removes the first plug, finally will
The hard alloy round tube suppressed takes out out of die sleeve；Step 4: sintering: the hard alloy round tube for suppressing internal screw thread is carried out
Band internal thread hard alloy round tube is obtained after sintering.
2. a kind of production method of carbide thin round tube internal screw thread according to claim 1, which is characterized in that the mould
Set is elastic Membrane cover.
3. a kind of production method of carbide thin round tube internal screw thread according to claim 2, which is characterized in that the bullet
Property die sleeve be Rubber membrane cover.
4. a kind of production method of carbide thin round tube internal screw thread according to claim 1, which is characterized in that the spiral shell
Different directions can be set in thread on line mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108149.6A CN109128157A (en) | 2018-09-21 | 2018-09-21 | A kind of production method of carbide thin round tube internal screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108149.6A CN109128157A (en) | 2018-09-21 | 2018-09-21 | A kind of production method of carbide thin round tube internal screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109128157A true CN109128157A (en) | 2019-01-04 |
Family
ID=64823138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108149.6A Pending CN109128157A (en) | 2018-09-21 | 2018-09-21 | A kind of production method of carbide thin round tube internal screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109128157A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692290A (en) * | 2020-12-31 | 2021-04-23 | 横店集团东磁股份有限公司 | Novel machining method for hard alloy threads |
| CN113000841A (en) * | 2021-02-24 | 2021-06-22 | 西北有色金属研究院 | Preparation method of porous nickel element with threaded deep hole |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2312287A1 (en) * | 1973-03-13 | 1974-09-19 | Tullius Theresia | PROCESS AND THE DEVICES REQUIRED FOR ITS EXERCISE FOR THE CHIPLESS PRODUCTION OF FEMALE THREADS IN NUTS, BUSHINGS WITH MALE THREAD, SLEEVES AND THE LIKE |
| GB1374073A (en) * | 1972-07-25 | 1974-11-13 | Krebsoege Gmbh Sintermetall | Manufacture of sintered components having an internal screw thread |
| US5269988A (en) * | 1990-12-04 | 1993-12-14 | Programme 3 Patent Holdings | Electrolyte holder |
| JPH11322447A (en) * | 1998-05-20 | 1999-11-24 | Meidensha Corp | Production of ceramic insert element assembly in insert appliance |
| JP2010047806A (en) * | 2008-08-22 | 2010-03-04 | Hitachi Powdered Metals Co Ltd | Molding die device and method for molding molded body having female screw part-fitted shaft hole using the same |
| CN201677520U (en) * | 2009-12-11 | 2010-12-22 | 上海复合材料科技有限公司 | Forming mould for compacting composite material with internal thread |
-
2018
- 2018-09-21 CN CN201811108149.6A patent/CN109128157A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1374073A (en) * | 1972-07-25 | 1974-11-13 | Krebsoege Gmbh Sintermetall | Manufacture of sintered components having an internal screw thread |
| DE2312287A1 (en) * | 1973-03-13 | 1974-09-19 | Tullius Theresia | PROCESS AND THE DEVICES REQUIRED FOR ITS EXERCISE FOR THE CHIPLESS PRODUCTION OF FEMALE THREADS IN NUTS, BUSHINGS WITH MALE THREAD, SLEEVES AND THE LIKE |
| US5269988A (en) * | 1990-12-04 | 1993-12-14 | Programme 3 Patent Holdings | Electrolyte holder |
| JPH11322447A (en) * | 1998-05-20 | 1999-11-24 | Meidensha Corp | Production of ceramic insert element assembly in insert appliance |
| JP2010047806A (en) * | 2008-08-22 | 2010-03-04 | Hitachi Powdered Metals Co Ltd | Molding die device and method for molding molded body having female screw part-fitted shaft hole using the same |
| CN201677520U (en) * | 2009-12-11 | 2010-12-22 | 上海复合材料科技有限公司 | Forming mould for compacting composite material with internal thread |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692290A (en) * | 2020-12-31 | 2021-04-23 | 横店集团东磁股份有限公司 | Novel machining method for hard alloy threads |
| CN113000841A (en) * | 2021-02-24 | 2021-06-22 | 西北有色金属研究院 | Preparation method of porous nickel element with threaded deep hole |
| CN113000841B (en) * | 2021-02-24 | 2022-06-28 | 西北有色金属研究院 | Preparation method of porous nickel element with threaded deep hole |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |