CN2405678Y

CN2405678Y - Forging-extruding one-time forming mould for drill bit and drill handle

Info

Publication number: CN2405678Y
Application number: CN 99212464
Authority: CN
Inventors: 陈桓宁
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-29
Filing date: 1999-05-29
Publication date: 2000-11-15
Anticipated expiration: 2009-05-29

Abstract

The utility model relates to a forging-extruding one-time forming die for a drill bit and a drill handle, which is provided with a bed die, a core die and a cover die. A blank of a drill bit and a drill handle is arranged in a die cavity of the bed die, the cover die is driven by a press machine to press, and the core die in the bed die is moved towards the die cavity to press the blank of the drill bit and the drill handle in shape. The utility model changes the existing art of milling processes, and the drill bit and the drill handle are shaped in one time. The utility model has the advantages of high work efficiency and drill production cost reduction. The utility model ensures the stabilization of improvement of the quality of products.

Description

Drill bit shank is forged extruding disposal molding mould

The utility model relates to a kind of drill bit shank mould.

About the existing reported in literature of the mould of drill bit, as " cold pressing forming mould of diamond bit " (ZL85205554, stop), " make diamond bit mould " (ZL87208194, stop), " brazed diamond drill bit mould " (ZL87213614, stop), " structure of drill bit screwdriver portion mould " (ZL89215743, expire) etc., but do not see the report of relevant drill bit shank mould.

Locating slot is arranged on the drill bit shank, and great majority are round end four grooves or square toes four grooves at present.Groove on the drillstock, prior art are to adopt milling process, need with professional milling machine, specialized high-speed steel milling cutter, milling cutter forms by flute profile and size correct grinding, is installed on the professional milling machine drillstock blank is carried out milling machine operation, divides several procedures, and must be by skilled miller operation, milling cutter must often be changed.This technology exists many defectives, and main is: 1, the human factor influence is big, and the quality assurance difficulty is big; 2, efficient is low, belongs to labour-intensive production pattern; 3, cut off metal " fiber ", drillstock torsional property reduction etc.

The purpose of this utility model is to provide a kind of drill bit shank to forge extruding disposal molding mould, changes the technology of present production drill bit shank, does not have the intrinsic defective of prior art, and production efficiency can improve exponentially.

For achieving the above object, the solution that the utility model is taked is: a kind of drill bit shank is forged extruding disposal molding mould, deposit die holder on the lower support plate and constitute bed die, embed core on the slide block and constitute core, put upper bearing plate and die shank on the Upper Die-sleeve and constitute cover die, core is laterally movable in die shoe, and restore with spring, the Upper Die-sleeve inwall embeds and inserts, passing the lower support plate mesopore through the drill bit shank blank of high temperature heating places in the die shoe die cavity, the forcing press band the cover die stamping, and inserting in the Upper Die-sleeve forces core rapid movement in the die shoe die cavity, and the drill bit shank blank of the extruded high temperature heating of the core on the core is swaged into locating slot.

Adopt the utility model, drillstock blank after the high temperature heating is placed in the die shoe die cavity, under forcing press moment provides powerful pressure effect, core force the blank metal that is in high temperature red heat state to around the distortion of non-resistance direction, thereby obtain required shape and size.Its main effect is: 1, the drillstock blank is when high warm forging extrudability is out of shape, metal grain produces slippage, and material " fiber " is not cut off, and expands around core, make the drillstock surface all more closely knit, improved antitorque and impact resistance significantly with inside.2, the drillstock surface smoothness is the influence that is subjected to core to a great extent, because the surface that core can be worn into dead smooth easily, therefore when forging extruding, the drillstock surface has reliable fineness, can reach , compare whole five grades that improved with milling process.3, under the effect of forcing press, core is forged and is squeezed into locating slot, and the uniformity of the shape of locating slot, size, precision is guaranteed, and has eliminated artificial factor.4, improved production efficiency widely, the prior art multiple working procedure is produced drillstock, changes the reconditioning milling cutter every now and then, adorns workpiece etc. continually, and invalid man-hour is many; With time moulding of the utility model one property, its burr are easy to obtain very soon arrangement on lathe, can improve about 10 times with respect to the prior art work efficiency, and individual event process operations personnel reduce 80% person-time on original basis; Because work efficiency improves, reduced the production cost of drill bit widely, guaranteed product quality again, have remarkable economic efficiency and social benefit.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is further described.

Accompanying drawing is the cross-sectional view of facing of present embodiment.

Present embodiment is for making four locating slot drillstock moulds.As shown in the figure, present embodiment has bed die, core and cover die, deposit die holder (10) on the lower support plate (7), fix it with screw (9), constitute bed die, slide block (6) is gone up and is embedded core (11) formation core, put upper bearing plate (2) and die shank (1) on the Upper Die-sleeve (4), fix it with screw (3) and nut (15), constitute cover die, core is laterally movable in die shoe (10), and restores with spring (12), and Upper Die-sleeve (4) inwall embeds insert (5), passing lower support plate (7) mesopore through the drill bit shank blank (8) of high temperature heating places in die shoe (10) die cavity, the forcing press band the cover die stamping, and insert (5) in the Upper Die-sleeve (4) force core rapid movement in die shoe (10) die cavity, and the drill bit shank blank (8) of the extruded high temperature heating of the core on the core (11) is swaged into locating slot.Insert (5) and interior corresponding one by one the working of slide block (6) of moving of die shoe (10) in the Upper Die-sleeve (4).In punching course, four slide blocks (6) move in die cavity, and the core (11) on the slide block (6) is with blank (8) extruding grooving.After punching course is finished, move on the cover die, slide block (6) resets under the effect of spring (12).Be unlikely to from die shoe (10), to drop for slide block (6) is moved in certain distance, stopper slot is arranged on the slide block (6), with dog screw (13) from die shoe (10) qualification.Place in die shoe (10) die cavity and be unlikely to dark in order to make drill bit shank blank (8) through high temperature heating pass lower support plate (7) mesopore, on die shoe (10), be equipped with set screw (16) and positioning screw cap (17), in order to strengthen the firmness of set screw (16) and positioning screw cap (17) and dog screw (13), on die shoe (10), put a block pressur plate (14).

Claims

1, a kind of drill bit shank is forged extruding disposal molding mould, it is characterized in that: deposit die holder (10) on the lower support plate (7) and constitute bed die, slide block (6) is gone up and is embedded core (11) formation core, put upper bearing plate (2) and die shank (1) on the Upper Die-sleeve (4) and constitute cover die, core is laterally movable in die shoe (10) also to restore with spring (12), Upper Die-sleeve (4) inwall embeds insert (5), passing lower support plate (7) mesopore through the drill bit shank blank (8) of high temperature heating places in die shoe (10) die cavity, the forcing press band the cover die stamping, insert (5) in the Upper Die-sleeve (4) force core rapid movement in die shoe (10) die cavity, and the drill bit shank blank (8) of the extruded high temperature heating of the core on the core (11) is swaged into locating slot.

2, a kind of drill bit shank according to claim 1 is forged extruding disposal molding mould, it is characterized in that: insert (5) and interior corresponding one by one the working of slide block (6) of moving of die shoe (10) in the Upper Die-sleeve (4).

3, a kind of drill bit shank according to claim 1 is forged extruding disposal molding mould, and it is characterized in that: slide block has stopper slot on (6), with dog screw (13) from die shoe (10) qualification.

4, a kind of drill bit shank according to claim 1 is forged extruding disposal molding mould, it is characterized in that: be equipped with set screw (16) and positioning screw cap (17) on the die shoe (10), also be equipped with a block pressur plate (14).