SU984692A1 - Apparatus for machining non-rigid parts - Google Patents

Description

54) DEVICE FOR MECHANICAL PROCESSING

FIELD: machine tool industry.

A device for machining parts is known that contains an abutment with rollers, through a vibration damper a pneumochome ij is connected to the piston rod.

However, the known technical solution has a relatively low accuracy, since it reduces the deflections from the component cutting forces acting in the horizontal plane without reducing the influence of the tangential component of the cutting force causing torsional vibrations.

The purpose of the invention is to increase the machining accuracy by reducing the deflection from the tangential component of the cutting force.

To achieve this goal, in the device for machining non-rigid parts containing an emphasis with rollers through a vibration damper connected to the piston rod of the pneumatic cylinder, the emphasis is made Y-shaped, the device is equipped with a rotating pneumatic chamber with a blade that supports the vibration, for RELIABLE ITEMS

vertical axis, and the blade of the rotary pneumatic chamber mounted on the piston rod with the possibility of rotation and axial movement.

Figure 1 presents the scheme of the device; figure 2 is a view of And in figure 1, when turning the emphasis in the direction of the moment m; on fig.Z - section bb in figure 1.

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Item 1 is installed in the head stock cartridge 2 and is pressed by the center 3. The device consists of a cutter 4, a left 5 and a right 6 V-shaped supports with rotating rollers, an emphasis 7,

15 sleeves 8 with a rotary pneumatic chamber blade 9. The latter is rigidly connected to the vibration damper 10, which is fixedly rotatable in the horizontal plane relative to the hinge 11, the vibration damper housing is connected through the hinge 12 to the piston rod 13 of the cylinder 14, which in turn is mounted on the axis 15 In addition, in Fig. 2, denote: P, - tangential, and P, - radial component cutting forces P 7}, - offset of the section of the part under the right support 6 at the moment M.

The device works as follows.

Claims (1)

30 (About. Part 1 is clamped in the chuck of the machine 2 and clamped by the rear center 3 In the initial position, set the stop 7 with the supports 5 and 6 of the vibration damper 10 in the middle of the part 1 on the special bracket of the machine bed. Part 1 is machined with a cutter 4, the blade in the power processing P, Py, bend the part in the direction of the resultant cutting force P (Fig. 1) .When processing starts according to a program block signal (conventionally not shown), the working medium enters the right-hand cavity of the pneumatic chamber 9, the blade with sleeve 8 turns, simultaneously turning A stop 7, which is mounted in the sleeve with the possibility of translational movement. When the right support 7 is rotated, the T-shaped bearing with rollers creates a moment m which, acting on part 1, the view changes the elastic line of the component’s deflection by a value, for example, Z .2). With further movement of the cutter 4, the working medium is fed into the left cavity of the rotary pneumatic chamber 9, while the blade with the sleeve 8 and the stop are rotated in the opposite direction to reduce the time M, acting on detail 1 (figure 3). The use of the proposed apparatus for the machining of non-rigid parts makes it possible to increase the processing accuracy. Claims An apparatus for machining non-rigid parts containing an axle with rollers through a vibration damper connected to a pneumatic cylinder production rod, characterized in that, in order to improve the machining accuracy by reducing the deflection of the tangential component of the cutting force, the abutment is made Y-shaped, the device is fitted with a stop rotary pneumatic chamber with a blade, the pneumatic chamber being associated with a vibration damper that is rotatably mounted relative to the vertical; It is a new axle, and the rotary pneumatic chamber blade is mounted on the piston rod with the possibility of rotation and axial stirring. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 683855, cl. B 23 B 25/02, 1977.