CN204208998U - A kind of reducing die of modified node method - Google Patents
A kind of reducing die of modified node method Download PDFInfo
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- CN204208998U CN204208998U CN201420693199.6U CN201420693199U CN204208998U CN 204208998 U CN204208998 U CN 204208998U CN 201420693199 U CN201420693199 U CN 201420693199U CN 204208998 U CN204208998 U CN 204208998U
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- core rod
- calibrating strap
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- mould bases
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Abstract
The utility model proposes a kind of reducing die of modified node method, be made up of core rod, mould bases, core rod is enclosed within mould bases, the upstream end pilot hole of core rod to be coning angle the be horn mouth of 20 °, and bell-mouthed end face adopts round-corner transition; The width of calibrating strap is 2.5-3 millimeter; Calibrating strap rear end employing length is the anti-horn mouth shape of 7-10 millimeter; The rear end of mould bases directly has hole, the diameter 1.6-2.5 millimeter larger than the diameter of calibrating strap in hole.Because transition before and after calibrating strap is mild, be scraped off before and after calibrating strap when workpiece can be avoided to pass in and out; After calibrating strap reduced width, reduce undergauge and resistance when exiting, when avoiding occurring undergauge movable end block and workpiece exits time the phenomenon of core rod being taken out of, coming off; Because afterbody cancels lining, aperture is greater than calibrating strap, and workpiece can be avoided contact with mould bases afterbody, and resistance when reduction workpiece passes in and out, prevents from workpiece from scraping injuring core rod being taken out of by workpiece.
Description
Technical field
The utility model belongs to reducing die.
Background technology
Existing reducing die, as shown in Figure 1, comprise core rod 2, mould bases 1, core rod 2 is enclosed within mould bases 1, and after core rod, tail has a high hardness alloy steel sleeve 3, and the upstream end of core rod is 201 straight holes, end chamfer, easy scratch surface of the work; Calibrating strap 202 width wide (width L is 4-6 millimeter), when causing undergauge, resistance is comparatively large, the situation that when workpiece higher to hardness exists undergauge, movable end is stuck, and when workpiece exits, easily takes mould bases out of by counter for core rod, cause core rod to come off; Fall 45° angle at calibrating strap 202 rear portion, easy scratch workpiece when workpiece exits; The diameter of bore 0.3mm larger than the diameter of calibrating strap 20 of high hardness alloy steel sleeve 3, but the effect not having aligning workpiece, on the contrary easy scratch workpiece.
Summary of the invention
In order to improve workpiece surface quality, reducing undergauge resistance, the utility model proposes a kind of reducing die of modified node method.
The technical solution of the utility model is: a kind of reducing die of modified node method, is made up of core rod, mould bases, and core rod is enclosed within mould bases, it is characterized in that: the upstream end pilot hole of core rod to be coning angle the be horn mouth of 20 °, and bell-mouthed end face adopts round-corner transition; The width of calibrating strap is 2.5-3 millimeter; Calibrating strap rear end employing length is the anti-horn mouth shape of 7-10 millimeter; The rear end of mould bases directly has hole, the diameter 1.6-2.5 millimeter larger than the diameter of calibrating strap in hole.
Beneficial effect: in the utility model, because transition before and after calibrating strap is mild, is scraped off when workpiece can be avoided to pass in and out before and after calibrating strap; After calibrating strap reduced width, reduce undergauge and resistance when exiting, when avoiding occurring undergauge movable end block and workpiece exits time the phenomenon of core rod being taken out of, coming off; Because afterbody cancels lining, aperture is greater than calibrating strap, and workpiece can be avoided contact with mould bases afterbody, and resistance when reduction workpiece passes in and out, prevents from workpiece from scraping injuring core rod being taken out of by workpiece.
Accompanying drawing explanation
Fig. 1 is the structure chart of existing reducing die.
Fig. 2 is structure chart of the present utility model.
Detailed description of the invention
The reducing die of a kind of modified node method as shown in Figure 2, is made up of core rod 5, mould bases 4, and core rod 5 is enclosed within mould bases 4, the upstream end pilot hole 501 of core rod for coning angle A be the horn mouth of 20 °, bell-mouthed end face adopts round-corner transition; The width L1 of calibrating strap 502 is 2.5-3 millimeter; Calibrating strap rear end 503 adopts length to be the anti-horn mouth shape (coning angle is 10-15 °) of 7-10 millimeter; The rear end of mould bases 4 directly has hole 401, the diameter 1.6-2.5 millimeter larger than the diameter of calibrating strap 502 in hole 401.
Claims (2)
1. a reducing die for modified node method, is made up of core rod, mould bases, and core rod is enclosed within mould bases, it is characterized in that: the upstream end pilot hole of core rod to be coning angle the be horn mouth of 20 °, and bell-mouthed end face adopts round-corner transition; The width of calibrating strap is 2.5-3 millimeter; Calibrating strap rear end employing length is the anti-horn mouth shape of 7-10 millimeter; The rear end of mould bases directly has hole, the diameter 1.6-2.5 millimeter larger than the diameter of calibrating strap in hole.
2. the reducing die of a kind of modified node method according to claim 1, is characterized in that: the coning angle of anti-horn mouth shape is 10-15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693199.6U CN204208998U (en) | 2014-11-19 | 2014-11-19 | A kind of reducing die of modified node method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693199.6U CN204208998U (en) | 2014-11-19 | 2014-11-19 | A kind of reducing die of modified node method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204208998U true CN204208998U (en) | 2015-03-18 |
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ID=52977709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420693199.6U Active CN204208998U (en) | 2014-11-19 | 2014-11-19 | A kind of reducing die of modified node method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204208998U (en) |
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2014
- 2014-11-19 CN CN201420693199.6U patent/CN204208998U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |