The method of producing complex components rotary extractor

 

(57) Abstract:

Usage: when rotating the hood preheated workpieces made of hard metals and alloys. The inventive method includes setting the workpiece on a rotating mandrel, the relative axial displacement of the tool rollers during movement of the tool by tilting it relative to the axis of the mandrel. The deformation is subjected to a pre-heated workpiece, relative axial movement of the tool carried out during movement of the mandrel along the axis, and the angle between the axis of rotation of the tool and the axis of the mandrel is reduced in the deformation process. 2 Il.

The invention relates to metal forming, and more particularly to a method of rotary exhaust pre-heated billet from hard metals and alloys for details of a complex configuration type hemispheres, cones, or both surfaces of the rotation.

Known rotational extrusion conical parts from flat blanks, in which the extrusion is carried out at the movement of the roller in mutually perpendicular directions: one along the axis of the mandrel, the other perpendicu the tee design.

The closest to the technical nature of the claimed method is rotational extrusion of hollow parts with a flange, comprising a rotary extractor shell and forming the flange part of the cyclic movement of the forming tool on a trajectory aimed at an angle to the axis of the handle, while in the process of movement along the trajectory changes the angle of the tool [2]

The disadvantage of the above method are the limited technological capabilities, for example, in parts of the rotary hood thick-walled workpieces made of hard alloys, because the conduct of the deformation with a significant layer of floating metal and the simultaneous implementation of complex movement Raskatov roller requires high rigidity.

The present invention is the task of expanding the technological capabilities of the method in part of the rotary hood thick-walled workpieces made of hard alloys by organizing deformation with less stringent requirements for kinematic and power schemes.

The problem is solved due to the fact that in the method of producing complex components, including the mouth is the movement of the tool by tilting it relative to the axis of the mandrel, according to the invention the deformation is subjected to a pre-heated workpiece, relative axial movement of the tool carried out during movement of the mandrel along the axis toward the tool, and the angle between the axis of rotation of the tool and the axis of the mandrel is reduced relative to its original position.

The possibility of solving the problem due to the fact that the complex motion of one body is replaced by a sum of simple movements from several agencies to organize and control each of which is energetically more profitable and simpler, additionally, the motion are integrated so that the necessary efforts can be achieved at lower energy costs.

In Fig.1 is a diagram of the method for the initial position of the roller; Fig.2 end position.

The method is implemented as follows. The workpiece 1 is mounted on the mandrel 2. Included drive rotation of the mandrel (not shown). Rolled head with raschetnymi rollers 3, which directly produce the processing of the workpiece, are installed in the original position to the beginning of the deformation. In this case the angle between the axis of rotation of the roller and the axis of rotation of the mandrel1,2- min is the value of the mandrel. At the moment of contact with the workpiece rolled rollers starts forming part of the workpiece. During movement of the mandrel along the axis up rollers penetrate into the workpiece to the desired depth.

Then on the drive turn heads rolled, with rolled rollers 3 mounted on rolled the heads can be rotated about its own axis. This rotation is due to the frictional forces arising during the implementation of the rollers to the workpiece. Changing the angle of rolled heads and magnitude of movement of the mandrel with attached to it procurement exercise consistently, depending on the shape of the surface that must be obtained during the deformation, with each position of the mandrel corresponds to a certain angular position of the heads rolled. In the process of deformation of the portion of the metal billet is moved raschetnym roll on the mandrel. Angle rolled heads to the axis of the mandrel only reduced to2(see Fig. 2), providing one-way movement of the mandrel and roller. The relative movement of workpiece and tool simplified power circuit, which in turn increased the stiffness characteristics of the device and thereby the logical possibilities of the method.

At the Institute this method is designed for rotary exhaust hemispherical parts of the disk workpiece dimensions: l=660 mm, H=110 mm, steel HM (GOST 4543-71) to obtain details with dimensions: l=670 mm H=402 mm

The billet is preheated up to 950-1000oC, is mounted on the mandrel. Rescata head is set to the initial position at an angle of 60oC to the longitudinal axis of the spindle. In the deformation process raskatnoe roller is introduced into the workpiece to a depth of 46 mm, the Deformation is carried out while moving the mandrel to a value of 650 mm with a speed of 2.20 mm/min and the corresponding rotation axis of the roller 60 until the 27o.

Stretching and shaping of the profile part is provided by moving the metal roller relative to the mandrel. In the drawing the thickness of the items received was 38 60 mm

After the deformation amount of machining is reduced to a minimum (withdrawal of allowances, performance grooves, grooves, threaded holes, and so on)e

The method of producing complex components rotary extractor, in which the workpiece is mounted on a rotating mandrel, deform tool that is installed with the possibility of changing the angle of inclination referring to plastic state, in the process of deformation of the workpiece is moved on a rotating mandrel along the axis toward the tool, and the angle of inclination of the axis of rotation of the tool to the axis of rotation of the mandrel is reduced relative to its original position.

 

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