CN2399129Y

CN2399129Y - Cold pounching mould rack

Info

Publication number: CN2399129Y
Application number: CN 99242762
Authority: CN
Inventors: 韩国良
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-14
Filing date: 1999-10-14
Publication date: 2000-10-04
Anticipated expiration: 2009-10-14

Abstract

The utility model relates to a cold punching mould rack used for punch presses or presses, which is provided with an upper mould plate, a lower mould plate, a guide sleeve fixed on the upper mould plate, a guide post fixed on the lower mould plate and an oil slot arranged between the guide sleeve and the guide post. The utility model is characterized in that a centre hole and a radical through hole which is communicated with the centre hole are arranged in the guide post. The utility model solves the problems of rapid wearing, heat generation, rapid precision descending, short service life and other problems of the guide sleeves and the guide posts of the cold punching mould racks which takes the matching between the guide sleeve and the guide post as a lubrication oil path and has small gap, so the lubrication oil is hard to flow to the rubbed surface at the lower part of the guide post.

Description

Cold stamping die set

The utility model relates to a kind of cold stamping die set that is used for punch press or forcing press.

Existing cold stamping die set can be seen from Fig. 7, it contains the cope match-plate pattern 1 and the lower bolster 5 that can fuse with the workbench of punch press or forcing press that can connect one with the slide block of punch press or forcing press, and be fixed in the guide pin bushing 3 on the cope match-plate pattern and be fixed in guide pillar 4 on the lower bolster, and the guide pin bushing inwall has two circles along the oil groove 2 that circumferentially distributes.The shortcoming of this cold stamping die set is: its needed lubricating oil is to be passage with the fit clearance between guide pin bushing and the guide pillar, and this passage reduces with the raising of mould bases precision, so lubricating oil is difficult for arriving the rubbing surface of guide pillar bottom, cause the wearing and tearing between guide pillar and the guide pin bushing big, the precise decreasing of mould bases is fast and service life short.It especially should not be used for the modern high speed punch press.

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, and a kind of cold stamping die set of long service life is provided, and it is had can keep its high precision and characteristics such as simple in structure, easily manufactured for a long time.

The utility model cold stamping die set, contain cope match-plate pattern, lower bolster and be fixed in guide pin bushing on the cope match-plate pattern, be fixed in the guide pillar on the lower bolster, and be arranged on oil groove between guide pin bushing and guide pillar, be characterized in: the radial direction through hole that centre bore is set in guide pillar and is communicated with centre bore.

The utility model cold stamping die set, its oil groove be arranged on the guide pillar outer wall be communicated with radial direction through hole and along its circular oil groove that circumferentially distributes; Or be arranged on the helical oil groove that is communicated with radial direction through hole on the guide pillar outer wall; Or be arranged on spiral groove on the guide pin bushing inwall.

The utility model cold stamping die set also can in the centre bore of guide pillar filter core be installed, and oil nozzle is equipped with at the top of guide pillar centre bore.

The advantage of the utility model cold stamping die set is: 1) in guide pillar, be provided with centre bore and with radial direction through hole that centre bore is communicated with after, the lubricating oil that adds from the centre bore top can direct reach oil groove, arrive the rubbing surface of guide pillar bottom again by the reciprocating motion of guide pin bushing, so its high lubricating effect, guide pillar, guide pin bushing are difficult for heating, not easy to wear, thereby can guarantee for a long time that the precision of mould bases and service life prolong; 2) lubricating oil is the centre bore, radial direction through hole engaging friction face in the guide pillar and need not be oil inlet passage with the mating surface between guide pillar, the guide pin bushing, so the fit clearance of guide pillar and guide pin bushing can further be dwindled, the precision of cold stamping die set further improves.

To and contrast accompanying drawing by embodiment below is further described below the utility model.Have in the accompanying drawing:

Fig. 1～Fig. 3 is the structure chart of the utility model cold stamping die set the 1st embodiment, and wherein Fig. 1 is with the front view that partly cuts open, and Fig. 2 is the A-A cutaway view among Fig. 1, and Fig. 3 is the node I enlarged drawing among Fig. 1;

Fig. 4～Fig. 6 is the guide pin bushing 3 of cold stamping die set among Fig. 1 and the assembly enlarged front view of guide pillar 4, and Fig. 4, Fig. 5, Fig. 6 are respectively the structure charts of the 2nd, 3,4 three embodiment of the utility model cold stamping die set;

Fig. 7 is the front view that existing cold stamping die set band partly cuts open.

Below narrate the structure of the utility model cold stamping die set by four embodiment.

Embodiment 1: can see that from Fig. 1～Fig. 3 the utility model cold stamping die set contains a cope match-plate pattern 1, lower bolster 5, two guide pin bushings 3 that are fixed in the annulus cylindricality on the cope match-plate pattern and two one end kinks in guide pin bushing and the other end is fixed in the columniform guide pillar 4 on the lower bolster, is provided with axial centre bore 41 and three groups and every group of three radial direction through hole 42 up and down vertical with centre bore and that be communicated with in the guide pillar 4; Centre bore top is equipped with that columniform filter core 6, the top made from sponge are chimeric to have connected an oil nozzle 7 that contains spheroid and spring.Cold stamping die set in use, earlier in cold stamping die set, put into mould, and cope match-plate pattern is fixed on the slider of punch, lower bolster is fixed on the workbench of punch press, and add lubricating oil by oil nozzle 7, at this moment lubricating oil by after filter core 6 filterings along centre bore 41, radial direction through hole 42 arrives circular oil groove 21, after starting punch press, guide pin bushing is reciprocating on guide pillar, at this moment make lubricating oil uniform up and down by circular oil groove at movable rubbing surface, therefore cold stamping die set reaches intrinsic lubricant effect, thereby can guarantee the precision of mould bases in a long time, its reliable operation, prolong service life, and because of oil from the inner directly engaging friction face of guide pillar, so guide pin bushing, the design load of fit clearance also can reduce between the guide pillar, so that mould bases is widely used in high velocity ram machine because of design accuracy improves.

Embodiment 2: its structure can see from Fig. 4, and it is that oil groove is arranged on the outer wall of guide pillar and the helical oil groove 22 that is communicated with radial direction through hole 42 with the difference of embodiment 1.

Embodiment 3: its structure can see from Fig. 5, and the difference of it and embodiment 1 is that oil groove is arranged on the guide pin bushing inwall and along three circular grooves 23 that circumferentially distribute.When guide pin bushing moved, this circular groove receivability made oil circumferentially uniform from the oil of radial direction through hole, and in the guide pin bushing motion oil is distributed on the rubbing surface up and down of guide pillar.

Embodiment 4: its structure can see from Fig. 6, and the difference of it and embodiment 5: oil groove is arranged on the spiral groove 24 on the guide pin bushing inwall.

More than the structure of each embodiment all can make cold stamping die set reach the lubricant effect of expection, thereby the high accuracy of mould bases is continued.

Claims

1, a kind of cold stamping die set, it contains cope match-plate pattern (1), lower bolster (5) and is fixed in guide pin bushing (3) on the cope match-plate pattern, is fixed in the guide pillar (4) on the lower bolster, and be arranged on oil groove between guide pin bushing and guide pillar, it is characterized in that: the radial direction through hole (42) that centre bore (41) is set in guide pillar (4) and is communicated with centre bore.

2, cold stamping die set as claimed in claim 1 is characterized in that: said oil groove be arranged on the guide pillar outer wall be communicated with radial direction through hole (42) and along its circular oil groove (21) that circumferentially distributes.

3, cold stamping die set as claimed in claim 1 is characterized in that: said oil groove is arranged on the helical oil groove (22) that is communicated with radial direction through hole (42) on the guide pillar outer wall.

4, cold stamping die set as claimed in claim 1 is characterized in that: said oil groove is arranged on the spiral groove (24) on the guide pin bushing inwall.

5, as cold stamping die set as described in claim 1 or 2 or 3 or 4, it is characterized in that: filter core (6) is housed in the centre bore of said guide pillar (4), and oil nozzle (7) is equipped with at the top of guide pillar centre bore.