CN216656082U

CN216656082U - Steel pipe local diameter shrinkage die with qualified mark of size

Info

Publication number: CN216656082U
Application number: CN202122736685.4U
Authority: CN
Inventors: 许连辅
Original assignee: China Ordnance Industry Group Aviation Ammunition Research Institute Co ltd
Current assignee: China Ordnance Industry Group Aviation Ammunition Research Institute Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-06-03
Anticipated expiration: 2031-11-10

Abstract

The utility model provides a steel pipe local diameter shrink mould with qualified mark of size, it relates to a steel pipe local diameter shrink mould, concretely relates to steel pipe local diameter shrink mould with qualified mark of size. The utility model aims to solve the problem that the qualification rate of the local reducing cliff of the prior bottle body is low. The device comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are sequentially arranged from top to bottom, a standard body assembly is arranged between the upper die assembly and the lower die assembly, and the lower end of the standard body assembly is arranged on the lower die assembly. The utility model belongs to the field of machining.

Description

Steel pipe local diameter shrinkage die with qualified mark of size

Technical Field

The utility model relates to a local diameter shrinkage die for a steel pipe, in particular to a local diameter shrinkage die for a steel pipe with a size qualified mark, and belongs to the field of machining.

Background

Stamping is a process method of mechanical processing, and is a method of pressing a metal blank through a die by using a press machine to generate plastic deformation so as to obtain a part with certain shape, size and performance, and is one of important processing methods in mechanical manufacturing. The parts produced by the stamping method have various types, and the forming method is also various, and the parts are summarized into two main types according to the types of forming processes, namely a separation process and a forming process. The molding process is a process in which the material is plastically deformed without damaging the material to obtain an article of a desired shape and size. The forming process comprises bending, deep drawing, bulging, flanging, reaming, shrinking, curling, leveling and the like. The shrinking step is a molding method for reducing a size of one end opening of a cylindrical member.

The bottle body part of a certain product produced by our factory is made by imitating the foreign technology, and the original bottle body is made by welding a larger bottle head and a bottle body with a local diameter reduced. The bottle head is made by casting a large blank, the local diameter reduction of the bottle body is completed on a spinning machine modified by a lathe in a factory, the qualification rate after spinning is only 60-70%, and the material waste is very serious. The bottle body is changed into the bottle body to be integrally formed in a shrinkage mode, the qualified rate is nearly 100%, the manufacturing cost is reduced, the production efficiency is improved, the manufacturing problem is solved for factories, the product quality is improved, and great economic benefits and social benefits are created. The original mould is not provided with a qualified mark, the arc inside the shrinkage female die extends from the lower part to the upper part, after the workpiece is pressed, whether the workpiece is qualified or not can not be directly judged, a measuring tool is needed to measure, labor is wasted, waste products are easy to generate, after the shrinkage female die is provided with the qualified mark, whether the workpiece is qualified or not can be judged without measuring, labor is saved, and waste products are not easy to generate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the qualification rate of the existing bottle body local reducing cliff is low, and further provides a steel pipe local diameter shrinkage die with a dimension qualified mark.

The technical scheme adopted by the utility model for solving the problems is as follows: the device comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are sequentially arranged from top to bottom, a standard body assembly is arranged between the upper die assembly and the lower die assembly, and the lower end of the standard body assembly is arranged on the lower die assembly.

Furthermore, the upper die assembly comprises an upper die base and a shrinkage die, the shrinkage die is fixedly installed on the lower surface of the upper die base, and an upper die inner cavity is formed in the lower surface of the shrinkage die.

Furthermore, the upper die inner cavity is formed by sequentially connecting a first circular arc section, a second circular arc section and a third circular arc section from top to bottom, a first qualified judgment marking line is arranged at the joint of the first circular arc section and the second circular arc section, and a second qualified judgment marking line is arranged at the joint of the second circular arc section and the third circular arc section.

Further, go up the mould subassembly and still include a plurality of mould rings of going up, the upper die base both sides all are equipped with mould rings of going up.

Further, the upper die assembly further comprises a plurality of first bolts, and the upper end of the shrinkage die is connected with the lower surface of the upper die base through the first bolts.

Furthermore, the lower die assembly comprises a positioner and a lower die base, the positioner is fixedly mounted on the upper surface of the lower die base, and the lower end of the standard body assembly is sleeved on the positioner.

Furthermore, the lower die assembly also comprises at least one lower die bolt, and the positioner is connected with the lower die base through the lower die bolt.

Further, the lower die assembly further comprises a plurality of lower die lifting rings, and the two sides of the lower die base are provided with the lower die lifting rings.

The utility model has the beneficial effects that: after the workpiece is pressed and formed, whether the workpiece is qualified or not can be judged without measurement; the utility model has simple structure, convenient manufacture and low cost, and can reduce the manufacturing cost of products; a turning edge is arranged at the position of the inner surface of the cavity of the female die, which has a qualified contracted diameter size, and whether the workpiece is qualified or not can be judged after the contraction; the standard body is arranged, so that the female die and the positioner can be ensured to be coaxial, and the upper opening and the lower opening of the shrinkage workpiece are ensured to be coaxial; the outer shape of the positioner is in a round table shape, so that workpieces can be conveniently placed on and taken down, and the working efficiency is improved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top plan view of the present invention with the upper die assembly and standard body assembly removed;

FIG. 3 is a front view of the upper die assembly;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a front view of the standard body assembly;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a front view of the lower die assembly;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a front view of the shrink mold;

fig. 10 is a top view of fig. 9.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 10, and the steel pipe local diameter shrinkage die with dimensional qualification marks according to the present embodiment includes an upper die assembly 1 and a lower die assembly 3, the upper die assembly 1 and the lower die assembly 3 are sequentially disposed from top to bottom, a standard body assembly 2 is disposed between the upper die assembly 1 and the lower die assembly 3, and the lower end of the standard body assembly 2 is mounted on the lower die assembly 3.

The upper die assembly 1 is installed on an upper sliding block of the equipment, the lower die assembly 3 is installed on a lower workbench of the equipment, a workpiece is sleeved outside a positioner of the lower die assembly 3 after being heated locally at unequal temperatures, the lower end of the workpiece is contacted with a lower die seat 3-3, the equipment is started, the sliding block of the equipment descends to a certain position, the sliding block of the equipment ascends after the workpiece is pressed to a required size, and the workpiece is separated from a female die, so that a working cycle is completed.

In the embodiment, the standard body component 2 consists of a 2-1 standard body and a 2-2 standard body hoisting ring, wherein the 2-1 standard body is formed by shrinking a steel pipe, and mainly has the function of enabling a 1-4 shrinking die and a 3-1 positioner to be coaxial when a die is installed; the 2-1 standard body and the 2-2 standard body lifting ring are connected by threads.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 10, and an upper die assembly 1 of a steel pipe local diameter shrinkage die with a dimension qualification mark according to the embodiment includes an upper die base 1-1 and a shrinkage die 1-4, wherein the shrinkage die 1-4 is fixedly installed on a lower surface of the upper die base 1-1, and an upper die inner cavity 1-5 is formed on a lower surface of the shrinkage die 1-4.

The external shape of the upper die assembly 1-4 shrinkage die is cylindrical, the internal part of the shrinkage die is a conical hole with an arc, the diameter of the lower end of the shrinkage die is large, the diameter of the upper end of the shrinkage die is small, an annular metal flowing turning edge is arranged at the qualified part of the shrinkage diameter of the upper end, an annular trace is generated on the workpiece after shrinkage, the workpiece after shrinkage is qualified when the annular trace exists, and the workpiece is unqualified otherwise. The 1-4 shrinkage die is assembled with the 1-1 upper die base through a 1-3 bolt; the 1-1 upper die base is a square thick steel plate, a round hole is formed in the middle of the square thick steel plate and used for exhausting gas during shrinkage, the left side and the right side of the 1-1 upper die base are respectively provided with two 1-2 upper die hanging rings used for hoisting dies, and the 1-1 upper die base is in threaded connection with the 1-2 upper die hanging rings. Other components and connections are the same as those in the first embodiment.

The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 10, and an inner cavity 1-5 of an upper die of a steel pipe local diameter shrinkage die provided with a dimension passing mark in the embodiment is formed by sequentially connecting a first arc section 1-5-1, a second arc section 1-5-2 and a third arc section 1-5-3 from top to bottom, and a first pass judgment mark line 4 is arranged at the joint of the first arc section 1-5-1 and the second arc section 1-5-2. The third section is a conical bus, the joint of the third section and the second section is not a workpiece qualification judgment line, and the third section is used for introducing the workpiece into the second section of the circular arc for necking before necking the workpiece. Other components and connection relationships are the same as those in the second embodiment.

The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 10, and the upper die assembly 1 of the steel pipe local diameter shrinkage die with the dimension qualification mark in the embodiment further includes a plurality of upper die rings 1-2, and the upper die rings 1-2 are disposed on both sides of the upper die base 1-1. Other components and connection relationships are the same as those in the second embodiment.

The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to 10, and the upper die assembly 1 of the steel pipe partial diameter shrinkage die provided with the dimensional qualification marks further comprises a plurality of first bolts 1-3, and the upper end of the shrinkage die 1-4 is connected with the lower surface of the upper die holder 1-1 through the plurality of first bolts 1-3. Other components and connection relationships are the same as those in the second embodiment.

The sixth specific implementation mode: the embodiment is described with reference to fig. 1 to 10, and the lower die assembly 3 of the steel pipe local diameter shrinkage die with the dimensional qualification marks comprises a positioner 3-1 and a lower die base 3-3, wherein the positioner 3-1 is fixedly installed on the upper surface of the lower die base 3-3, and the lower end of the standard body assembly 2 is sleeved on the positioner 3-1. The lower die base of the lower die component 3-3 is a square thick plate, a threaded hole is formed in the middle of the lower die base, and the 3-1 positioner is installed on the 3-3 lower die base through a 3-2 bolt; the 3-1 positioner is externally shaped like a round table, is short and small on the upper part, is large at the lower end, is convenient for a workpiece to be sleeved outside, is internally provided with a cylindrical counter bore, and is provided with a through hole for mounting a 3-2 bolt in the middle; the left side and the right side of the 3-3 lower die base are respectively provided with two 3-4 lower die lifting rings for hoisting the die. Other components and connections are the same as those in the first embodiment.

The seventh embodiment: the embodiment is described with reference to fig. 1 to 10, the lower die assembly 3 of the steel pipe partial diameter shrinkage die with the dimensional qualification marks further comprises at least one lower die bolt 3-2, and the positioner 3-1 is connected with the lower die base 3-3 through the lower die bolt 3-2. Other components and connection relations are the same as those of the sixth embodiment.

The specific implementation mode is eight: the embodiment is described with reference to fig. 1 to 10, and the lower die assembly 3 of the steel pipe local diameter shrinkage die with the dimension passing mark further includes a plurality of lower die lifting rings 3-4, and both sides of the lower die base 3-3 are provided with the lower die lifting rings 3-4. Other components and connection relations are the same as those of the sixth embodiment.

Principle of operation

The utility model can directly judge whether the workpiece is qualified or unqualified after shrinkage. In the die cavity of the shrinkage die, an annular metal flow turning edge is arranged at the position where the shrinkage diameter is qualified, an annular trace is generated on the workpiece after shrinkage, and the workpiece after shrinkage is qualified when the annular trace is formed on the workpiece, otherwise, the workpiece is unqualified. The working procedure of the shrinkage die is that the shrinkage die is firstly fixed on a high-stroke hydraulic press, a workpiece is placed on a positioner of a lower die assembly after being heated locally at unequal temperatures, equipment is started, an equipment sliding block descends to a certain position, and then the equipment sliding block ascends until the workpiece is separated from a female die, so that a working cycle is completed.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims

1. The utility model provides a steel pipe local diameter shrink mould with qualified mark of size which characterized in that: the steel pipe local diameter shrinkage die with the qualified mark of size comprises an upper die assembly (1) and a lower die assembly (3), wherein the upper die assembly (1) and the lower die assembly (3) are sequentially arranged from top to bottom, a standard body assembly (2) is arranged between the upper die assembly (1) and the lower die assembly (3), and the lower end of the standard body assembly (2) is installed on the lower die assembly (3).

2. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as recited in claim 1, wherein: the upper die assembly (1) comprises an upper die base (1-1) and a contraction die (1-4), the contraction die (1-4) is fixedly arranged on the lower surface of the upper die base (1-1), and an upper die inner cavity (1-5) is formed in the lower surface of the contraction die (1-4).

3. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as claimed in claim 2, wherein: the upper die inner cavity (1-5) is formed by sequentially connecting a first arc section (1-5-1), a second arc section (1-5-2) and a third arc section (1-5-3) from top to bottom, a first qualification judgment marking line (4) is arranged at the joint of the first arc section (1-5-1) and the second arc section (1-5-2), and a second qualification judgment marking line (5) is arranged at the joint of the second arc section (1-5-2) and the third arc section (1-5-3).

4. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as recited in claim 2, wherein: the upper die component (1) also comprises a plurality of upper die hanging rings (1-2), and the upper die hanging rings (1-2) are arranged on both sides of the upper die base (1-1).

5. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as recited in claim 2, wherein: the upper die assembly (1) further comprises a plurality of first bolts (1-3), and the upper end of the contraction die (1-4) is connected with the lower surface of the upper die base (1-1) through the plurality of first bolts (1-3).

6. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as recited in claim 1, wherein: the lower die assembly (3) comprises a positioner (3-1) and a lower die base (3-3), the positioner (3-1) is fixedly arranged on the upper surface of the lower die base (3-3), and the lower end of the standard body assembly (2) is sleeved on the positioner (3-1).

7. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as claimed in claim 6, wherein: the lower die assembly (3) further comprises at least one lower die bolt (3-2), and the positioner (3-1) is connected with the lower die base (3-3) through the lower die bolt (3-2).

8. The local diameter shrinkage die for the steel pipe provided with the dimension qualified mark as recited in claim 6, wherein: the lower die component (3) also comprises a plurality of lower die lifting rings (3-4), and the two sides of the lower die base (3-3) are provided with the lower die lifting rings (3-4).