SU1722662A1 - Die with paired guides and lubricant receiver for the guides - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to dies with guide columns and bushings. In the stamp there are means for lubricating the guide pairs. The purpose of the invention is to reduce the labor and material costs for the manufacture and operation of the stamp. The stamp contains the bottom plate (P) 1 with reservoirs 8 with lubricant, upper P, additional lower P 3 and additional upper P 4. P 4 installed guide columns 5, and P 3 - guide sleeves 6. Guide pairs provided with separators 7. During the working stroke, columns 5 enter the tanks 8 and lubricate the rubbing surfaces. 1 hp f-ly, 2 ill.

Description

The invention relates to the processing of metals by pressure, in particular to stamps for sheet metal stamping, and is associated with a lubrication system of guide assemblies in replaceable bags.

Punches are known with fastening of guide columns to the bottom plate and lubrication chambers located under the sleeves of the top plate. The columns are provided with transverse annular grooves, and the chambers with liners with elastic elements that press the liners to the surfaces of the grooves. When the upper plate moves, the liners, moving along the surface of the columns, periodically open the channels for lubrication, which falls on the columns and is transferred to the surface of the sleeves. At hit in flutes inserts lock channels.

Stamps do not provide the required accuracy of the direction of the basic elements.

This disadvantage is eliminated in the stamp, the design of which allows the ball separators to be placed in the bushings of the guide pairs. In this stamp, the lubricant is supplied from devices mounted on the press housing and partially located in the space of the upper plate and guide bushings. When pressing down the columns on the check valves that close these tanks, the lubricant through the channels in the columns falls on the side surfaces of the guide pairs during the working stroke of the column.

The bulkiness and structural complexity of the lubrication devices hinders their use in interchangeable punch packages and make it difficult to remove the punch from the press, and the rapid wear and increased punch dimensions make this design ineffective. A more efficient and economically viable stamp is speakers. In this stamp, the lubrication tanks are directly bushes, fixed in the bottom plate and closed with spring-loaded visors. The design is designed for contactless interaction of the columns with the sleeves by maintaining the gaps between them at the expense of. braking effect of lubrication.

Despite the great simplicity and compactness of this stamp, it does not provide the necessary precision in the manufacture of parts, operation is associated with a number of difficulties, in particular, with filling and removal of lubricant during its replacement, as well as during installation and removal of the stamp. In addition, in this stamp, a large closed height is maintained, which narrows the field of application and makes it difficult for installers to install in a press.

The purpose of the invention is to reduce labor

and material costs for the manufacture and operation of the stamp.

A stamp with a guide pair and a reservoir for lubricating it, including the bottom plate in which the reservoir is located,

0 the top plate, the guide column, the free end of which is facing the tank and disposed in it, has a guide sleeve, a compression spring, a protective washer, an enclosing column 5 and is located between the end of the guide sleeve and a spring, is provided with additional upper and lower plates fixed respectively on the main plates, while

0, the guide column is fixed at the additional top, and the sleeve is at the additional bottom plate. The guide pairs are equipped with cage separators.

5 Figure 1 shows a batch stamp with

the lubrication system of the columns of the replaceable package (including on the left side with the package fixed in the block and in the closed position, and on the right side - with

0 packet released); figure 2 - bottom of the stamp, the view in the plan,

On the bottom plate 1 of the unit there is a replaceable package fixed with clamping devices 2 and consisting of the bottom 3 and

5 top 4 plates, guide columns 5 ,. which are fixed in the plate 4, and sleeves 6. which are installed in the plate 3. Ball separators are placed between the columns and bushings 7. The length of the columns exceeds

0 closed package height with a working tool. The working ends of the columns are placed in a cavity 8 made in the plate 1 and serving as reservoirs for the lubricating fluid. For its supply to tanks in the stove

5 1, piping 9 is made. The sleeves 6 are closed with washers 10, on which compression springs 11 are placed.

Lubrication of the guide assemblies of the package is performed after its installation and securing in the block. At the extreme lower position of the press ram (not shown), a lubricant fluid is fed into the chambers formed by the cavities 8 and the sleeves 6, through the pipes 9, which fills the chambers

5 to level B and lubricates the surfaces of the sliding parts. After the pipelines are closed in the die, work steps are performed, during which the lubricating fluid is transferred to the rubbing surfaces located above level B. Moreover, the washers 10 prevent the liquid from splashing out. Depending on the technology adopted, in the interval between work operations, it is possible to replace the lubricating fluid, which is produced in the lowest position of the slide by draining it through pipelines 10 and feeding it into the chambers of a new portion.

To remove a packet from a block, the following operations are performed. In the lowest position of the press slide, the lubricant fluid is discharged and the bag is released from the clamping devices 2. During the return stroke of the spring slide 11, the upper plate 4 of the bag is depressed from the bottom 3, the column 5 is withdrawn from the cavities 8. After that the bag is removed from the block.

Compared with the prototype, the proposed stamp is simpler and more technological to manufacture, its design can be used in batch dies. At the same time, it is easier for him to remove and install replacement packages.

Claims (2)

1. A stamp with a guide pair and a reservoir with lubricant for longer, containing the bottom plate in which the tank is located, the top plate, the guide column, the free end of which is facing the tank and the spring sleeve can be placed in it. the compression washer covering the column and located between the end of the guide sleeve and the spring, characterized in that, in order to reduce the labor and material costs of its manufacture and operation, it  It is equipped with an additional top and bottom plates, fixed respectively on the main plates, a guide column is fixed in the additional top plate, and a guide sleeve in an additional bottom one. 2. A stamp according to claim 1, characterized in that the guide pair is provided with a separator with rolling elements.