CN102284533B

CN102284533B - Multi-position cold extrusion forming method of ratchet handle

Info

Publication number: CN102284533B
Application number: CN 201110179668
Authority: CN
Inventors: 陈杨忠
Original assignee: JINHUA ZHONGXIN HARDWARE TOOLS Co Ltd
Current assignee: JINHUA ZHONGXIN HARDWARE TOOLS Co Ltd
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2013-09-04
Anticipated expiration: 2031-06-28
Also published as: CN102284533A

Abstract

The invention relates to a multi-position cold extrusion forming method of a ratchet handle, which belongs to the technical field of ratchet handles, and is characterized by comprising the multi-position cold extrusion processing steps that: one end of a blank is cold extruded into a spherical head through a mould; through cold extrusion, the spherical head is pressed to be flat and a positioninghole is pressed; through cold extrusion, lead holes of an upper end surface and a lower end surface are extruded; through cold extrusion, the outer diameter of the pressed spherical head is enlarged,and the lead holes of the upper end surface and the lower end surface are deepened and enlarged; waste materials in the middle of the lead holes are further pressed to be thinner through cold extrusion, the lead holes are further deepened and enlarged, and the outer diameter of the pressed spherical head is further enlarged; the waste materials in the middle of the lead holes are punched out through cold extrusion, so that the lead holes become counterbores; through cold extrusion, installation positioning holes are extruded, so that the counter bores are enlarged and formed into inner gear holes for processing inner gears; and through cold extrusion, the inner gears which are meshed with ratchets are extruded. The multi-position cold extrusion forming method of the ratchet handle is adopted for processing the ratchet handle, and the blank does not need to be heated, so that energy, power and water are saved, few materials are consumed, and the environment is not polluted.

Description

A kind of multistation cold-extrusion molding method of ratchet handle

Technical field

The invention belongs to the ratchet handle technical field, be specifically related to a kind of multistation cold-extrusion molding method of ratchet handle.

Background technology

Existing ratchet handle as being used for the ratchet handle on the box spanner, all adopts multistation high-frequency heating hot press forming technology, and its concrete operation is: the one, and directly materials and parts one end high-frequency heating secondary hot pressing becomes bulb; The 2nd, materials and parts bulb high-frequency heating secondary hot pressing flattens bulb, and extrudes locating hole; The 3rd, the hot pressing of materials and parts bulb high-frequency heating goes out to draw the hole; The 4th, materials and parts bulb high-frequency heating, heat is dashed, and washes out biend and draws the middle waste material in hole; The 5th, materials and parts bulb high-frequency heating, towards tooth, biend is respectively cut burr one time behind the tooth; The 6th, the grinding of materials and parts biend; The 7th, materials and parts turning location counterbore; The 8th, materials and parts fine finishining polishing.The most of station of above-mentioned processing method all needs high-frequency heating, the high-frequency heating power consumption of extremely consuming energy, consumption cooling water, namely consume running water, and contaminated environment, the workman needs to work under the environment of high-frequency heating, they not only will be subjected to heat radiation, and will be subjected to high frequency radiation; In addition, between the upper and lower station, materials and parts need have cool time, so the processing effect is low; Also have materials and parts after high-frequency heating, the superficial layer oxidation, again because washing out the waste material that biend draws in the middle of the hole is hot pressing processing, and the surplus that hot-working requires processing to stay is big, so it is thick to wash out the waste material that biend draws in the middle of the hole, because two above-mentioned reason consumptive materials are big.

Summary of the invention

The objective of the invention is to provide a kind of multistation cold-extrusion molding method of ratchet handle, with this method processing ratchet handle, materials and parts need not heating, so energy-conservation economize on electricity, water saving, consumptive material is few, free from environmental pollution, the workman need not to work under the adverse circumstances of high-frequency heating; Processing effect height; The intensity height of ratchet handle.

Above-mentioned goal of the invention is achieved through the following technical solutions, a kind of multistation cold-extrusion molding method of ratchet handle, and its main points are that it comprises following multistation cold extrusion processing:

A, on straight material fracture, take off the blank materials and parts of ratchet handle, blank materials and parts one end is squeezed into bulb through mold cold;

B, materials and parts push through mold cold at the bulb position, flatten bulb, and extrude locating hole;

The upper and lower biend of C, the bulb that flattens at materials and parts with the locating hole location, through mould together or two road cold extrusions, squeezes out the hole of drawing of upper and lower biend;

D, draw the Kong Shangjing mould together or two road cold extrusions at the upper and lower biend of materials and parts, the external diameter of the bulb of flattening enlarges, and upper and lower biend draws the hole to be deepened to strengthen;

E, with the upper and lower biend of materials and parts draw in the middle of the hole waste material through mould together or two road cold extrusions, further ironed, and make upper and lower biend draw the hole further to deepen to strengthen, the external diameter of the bulb of flattening enlarges again;

F, the upper and lower biend of materials and parts is drawn waste material in the middle of the hole, wash out with the mold cold extruding, two draw the hole break-through becomes counterbore;

G, the counterbore of materials and parts is pushed through mold cold, squeeze out the installation locating hole, make counterbore hole enlargement typing become the interior perforation of processing internal tooth;

H, with materials and parts internal tooth aperture mold cold extruding, squeeze out the internal tooth with the ratchet engagement.

The present invention is because adopted multistation cold-extrusion molding method processing ratchet handle, and materials and parts need not the multistation high-frequency heating, so save the electricity consumption of multistation high-frequency heating, saves cooling water, and is free from environmental pollution; The workman need not to work under the adverse circumstances of high-frequency heating; Between the upper and lower station, materials and parts need not to expend cool time, so processing effect height; In addition, this method is cold extrusion, so the intensity height of ratchet handle; Also have materials and parts without heating, so the waste of surperficial non-oxidation layer; Because cold extrusion can be stayed to such an extent that lack than the allowance of high frequency hot pressing, the upper and lower biend of materials and parts draws the waste material in the middle of the hole, further ironed through one on mould or two road cold extrusions, and the external diameter of the bulb of flattening is enlarged again, so waste material can be fully used, its waste part that is punched down is very few.

Description of drawings

Fig. 1: the schematic isometric that blank materials and parts one end is squeezed into bulb through mold cold

Fig. 2: materials and parts push through mold cold at the bulb position, flatten bulb, and extrude the schematic sectional view of locating hole

Fig. 3: the upward view of the used cold extrusion die of corresponding diagram 2 processing stations

Fig. 4: at the upper and lower biend of materials and parts flattening bulb, with the locating hole location, through upper and lower each one cold extrusion of mould, squeeze out the schematic sectional view that draws the hole of upper and lower biend

Fig. 5: the upward view of the used cold extrusion die of corresponding diagram 4 processing stations

Fig. 6: draw each the two road cold extrusion of Kong Shangjing mould at the upper and lower biend of materials and parts, the external diameter secondary of the bulb of flattening enlarges, and upper and lower biend draws the schematic sectional view that the hole secondary is deepened increasing

Fig. 7: the upward view of the used cold extrusion die of corresponding diagram 6 two road processing stations

Fig. 8: the upper and lower biend of materials and parts is drawn the middle waste material in hole, wash out with the mold cold extruding, two draw the schematic sectional view that the hole break-through becomes counterbore

Fig. 9: the upward view of the used cold extrusion die of corresponding diagram 8 processing stations

Figure 10: the stereogram of the used cold extrusion die formpiston of corresponding Figure 11 processing stations

Figure 11: materials and parts are pushed through mold cold, make its counterbore hole enlargement and typing, become the interior perforation of processing internal tooth through the counterbore of hole enlargement typing, and squeeze out the schematic sectional view that fixed hole is installed

Figure 12: the upward view of the used cold extrusion die former of corresponding Figure 11 processing stations

Figure 13: the stereogram of the used cold extrusion die formpiston of corresponding Figure 14 processing stations

Figure 14: with the extruding of materials and parts internal tooth aperture mold cold, squeeze out the schematic sectional view of the internal tooth that meshes with ratchet

Figure 15: the upward view of the used cold extrusion die former of corresponding Figure 14 processing stations

Among Fig. 1-15,1-materials and parts, 2-bulb, 3-flattens positioning module, and 4-processes locating hole, and 5, the upper and lower end face of 6-, casement is drawn in the 7-extruding, and 8-draws the hole, 9-waste material extrusion die, the 10-perforating die, the 11-counterbore, rod is dashed in the extruding of 12-locating hole gear hole, 13-locating hole gear hole extrusion die, 14-installs locating hole, perforation in the 15-, 16-squeezes tooth and dashes rod, 17-internal tooth shaping mould, 18-internal tooth

The specific embodiment

By Fig. 1-15 represented be one embodiment of the invention, it comprises following multistation cold extrusion processing:

A, on straight material fracture, take off the blank materials and parts 1 of ratchet handle, blank materials and parts 1 one ends are squeezed into bulb 2 through mold cold;

B, materials and parts 1 at bulb 2 positions through mould---flatten positioning module 3 cold extrusions, flatten bulb 2, and extrude processing locating hole 4;

C, flatten the upper and

lower biend

5,6 of bulb 2 at materials and parts 1, with processing locating hole 4 location, through mould---casement 7 upper and

lower biends

5,6 each one cold extrusion are drawn in extruding, squeeze out upper and

lower biend

5,6 draw hole 8;

D, draw on the hole 8, through mould at materials and parts 1 upper and

lower biend

5,6---waste material extrusion die 9 upper and

lower biends

5,6 each one cold extrusion, the external diameter of the bulb 2 of flattening enlarges, and upper and

lower biend

5,6 draws hole 8 to be deepened to strengthen;

E, will draw the waste material in the middle of the hole 8 through the materials and parts 1 upper and

lower biend

5,6 of D station processing, through mould---waste material extrusion die 9 upper and

lower biends

5,6 each one cold extrusion again, further ironed, and making upper and

lower biend

5,6 draw further intensification increasing of hole 8, the external diameter of the bulb 2 of flattening enlarges again;

F, materials and parts 1 upper and

lower biend

5,6 is drawn waste material in the middle of the hole 8, uses mould---perforating die 10 cold extrusions are washed out, and two draw hole 8 break-through becomes counterbore 11;

G,---rod 12, cold extrusion die former are dashed in the extruding of locating hole gear hole---locating hole gear hole extrusion die 13 one cold extrusion through the cold extrusion die formpiston with the counterbore 11 of materials and parts 1, squeeze out locating hole 14 is installed, make counterbore 11 hole enlargements typing become the interior perforation 15 of processing internal tooth

H, perforation 15 in the materials and parts 1---squeezed tooth and dashes rod 16, cold extrusion die former---17 one cold extrusion of internal tooth shaping mould squeeze out the internal tooth 18 with the ratchet engagement through the cold extrusion die formpiston.

Claims

1. the multistation cold-extrusion molding method of a ratchet handle is characterized in that it comprises following multistation cold extrusion processing:

A, on straight material fracture, take off the blank materials and parts (1) of ratchet handle, blank materials and parts (1) one end is squeezed into bulb (2) through mold cold;

B, materials and parts (1) at bulb (2) position through mould---flatten positioning module (3) cold extrusion, flatten bulb (2), and extrude processing locating hole (4);

C, upper and lower biend (5), (6) of flattening bulbs (2) at materials and parts (1), with processing locating hole (4) location, through mould---extruding draw casement (7) upper and lower biend (5), (6) each together or two road cold extrusions, what squeeze out upper and lower biend (5), (6) draws hole (8);

D, draw on the hole (8) in upper and lower biend (5), (6) of materials and parts (1), through mould---waste material extrusion die (9) is in upper and lower biend (5), (6) each one or two road cold extrusions, the external diameter of the bulb (2) that flattens enlarges, and upper and lower biend (5), (6) are drawn hole (8) and deepened to strengthen;

E, with the waste material in the middle of drawing hole (8) through upper and lower biend (5), (6) of the materials and parts (1) of D station processing, through mould---waste material extrusion die (9) is in upper and lower biend (5), (6) each one or two road cold extrusion again, further ironed, and making upper and lower biend (5), (6) draw further intensification increasing of hole (8), the external diameter of the bulb of flattening (2) enlarges again;

F, waste material in the middle of the hole (8) is drawn in upper and lower biend (5), (6) of materials and parts (1), uses mould---perforating die (10) cold extrusion is washed out, and two draw hole (8) break-through becomes counterbore (11);

G,---rod (12), cold extrusion die former are dashed in the extruding of locating hole gear hole---locating hole gear hole extrusion die (13) cold extrusion through the cold extrusion die formpiston with the counterbore (11) of materials and parts (1), squeeze out locating hole (14) is installed, make counterbore (11) hole enlargement typing become the interior perforation (15) of processing internal tooth;

H,---squeeze tooth dash rod (16), cold extrusion die former---internal tooth shaping mould (17) cold extrusion through the cold extrusion die formpiston with the interior perforations of materials and parts (1) (15) squeeze out the internal tooth (18) with the ratchet engagement.