Device for deformation of the end face of the rod blanks

 

(57) Abstract:

The inventive device for deformation of the end face of the rod blank, contains lower fixed and the upper movable plate, an intermediate spring-loaded in the axial direction of the plate, the matrix and the centering sleeve mounted coaxially to each other in the intermediate plate, and a punch mounted on the top plate. Intermediate plate connected with the upper movable plate. On the stationary plate has a hard stop and a C-shape puller. The extractor is configured to accommodate the centering sleeve. 3 Il.

The invention relates to a pressure treatment and can be used for hot deformation of the end face of the rod blank with a previously received by the flange, for example, to obtain spherical recesses on the end face of the pusher diesel engine.

A device for strain containing matrix that is installed on the fixed plate, and a punch mounted on a movable plate [1]

In this device, the deformation of the end face of the rod blank with a previously received by the flange as the flange makes installation of the workpiece in the matrix. This limits the technological ing plate, intermediate plate, matrix and centering bushing mounted in the intermediate plate coaxially to each other, a punch mounted on the top plate [2]

In such a device it is possible deformation of the end face of the rod blank with a previously received by the flange. The presence of an intermediate plate allows you to divide a forming tool in the initial position, for example, for a more comfortable lubrication and cooling.

However, this device has the following disadvantages. Deformation of the end face of the rod blanks (for example, the receiving recesses on the end and giving end within the gap between the blank and die) occurs in the movement of the workpiece relative to the matrix. When this frictional force arising between the blank and die, contribute to high stress deformation and axial force on a cold area of the workpiece. These efforts are especially increase with the increase of the cross-section obtained at the end of the recess, and when the temperature of deformation of the end face of the rod necessitated by, for example, the requirements of clarity and accuracy of the resulting depressions. This leads to plastic deformation of the cold section of the rod blank to phase the spine. Thereby precipitate the cold section of the rod blank in areas of reduced cross-section that does not allow deformation of the rod blanks having, for example, a pre-made groove cross-section, a lower section of the workpiece. It also reduces technological capabilities. You need a puller to remove the deformed workpiece from the matrix. This complicates the design. Requires 2 types of interdependent force springs, which complicates the design. There is no guaranteed separation of a deformable workpiece from the punch. This requires additional devices for power removal of the workpiece from the punch, which also complicates the design. Device is required for enforcement in the matrix preparation is heated prior to deformation of the end in terms of when to increase the accuracy of the workpiece diameter close to the diameter of the cavity of the matrix. It also complicates the design.

The technical result of the invention consists in eliminating the need for subsequent grinding of the obtained workpiece, the possibility of using equipment of simple design low press force and deformation of a billet rod thetsa fact, in the device for deformation of the end face containing lower fixed and the upper movable plate, an intermediate spring-loaded in the axial direction of the plate, the matrix and the centering sleeve mounted coaxially to each other in the intermediate plate, and a plug secured in the upper plate, an intermediate plate connected with the upper movable plate and the fixed plate has a fixed stop and a C-shape puller, the puller is configured to accommodate the centering sleeve.

In Fig. 1 shows the device in the upper position of the movable plate; Fig. 2 is in its lower position; Fig. 3 section a-a in Fig. 2.

On the fixed plate 1 set the focus 2 of the workpiece 3. On the fixed plate 1 also has a hard " C " shaped puller 4, covering the stop 2. In the stripper 4 is made a groove for the introduction of the workpiece and its installation on a support 2. On the movable plate 5 with columns 6 and springs 7 mounted intermediate plate 8 and the punch 9. In the intermediate plate telescopically relative to the punch 9 are the matrix 10 and coaxially she centering sleeve 11. The centering sleeve is made with possibility of accommodation in the stripper 4.

The device operates as follows.

In the device, the deformation of the end face is at a stationary position of the matrix and the movement of the punch relative to the workpiece and the matrix. When this frictional force arising between the blank and die, contribute to reduced stress deformation and axial force on a cold area of the workpiece. This allows the deformation of workpieces with local understatement section on a cold area that is expanding technological capabilities.

In the appliance Department of a deformable workpiece from the die and punch is due to the hard puller. This eliminates the use of ejector and the need for the device to force removal of the workpiece from the punch, which simplifies the design. The absence of interdependent force of the springs also simplifies the design of the proposed device. Power input blanks in the matrix is from the efforts of the movable plate, usually associated with the press slide. This eliminates the need for devices for power input blanks in the matrix, which also simplifies the design.

DEVICE FOR deformation of the END face of the ROD BLANKS containing lower fixed and the upper movable plate, an intermediate spring-loaded in the axial direction of the plate, the matrix and the centering sleeve mounted coaxially with one another in the intermediate plate, and a punch mounted on the top plate, wherein the intermediate plate is connected with the upper movable plate, and is asemenea it centering sleeve.

 

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SUBSTANCE: hard alloy matrix has casing, bushing pressed in the case and hard alloy insertion. Bushing has multifaced hole. Hard alloy insertion is composed by several sections made in form of trapezoidal-section prisms which have cut angles at their non-working edges. Number of sections corresponds to number of faces of item to be headed. Cuts of angles are made symmetrically to faces of working edge. Slits are made in several places of multifaced hole bushing at the ponts where faces cross each other.

EFFECT: improved resistance of matrix; simplified assembly.

3 cl, 1 dwg

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