RU33886U1 - DOUBLE SPIN HEAD - Google Patents

Description

DOUBLE SPIN HEAD

The proposed device relates to metalworking, in particular to the processing of metals by cutting and can be used as technological equipment of aggregate machines used in the repair industry.

A multi-spindle head is known, in the housing of which there is a drive shaft with a pinion gear designed to interact with the teeth of the driven gears mounted on spindles located in the rails mounted with the possibility of radial movement in the guides of the spindle plate, placed in the housing with rotation this head is equipped with additional plates and carriers placed in the housing, some ends of which are mounted for rotation around the drive shaft, while others tightly connected to the spindle plates, the number of spindle plates corresponds to the number of spindles, (and.with. No. 1756028 of the USSR, IPC V23V 39/16, publ. 08/23/92, Bull. G231)

A disadvantage of the known head is the complexity and large dimensions of the structure, low rigidity of the installation of the spindles due to the large number of slide devices, which contributes to vibration during operation and to reduce the quality of the processed surface.

Closest to the technical nature of the claimed device is a multi-spindle head consisting of a housing in

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which contains a gearbox of cylindrical gears with a central pinion gear gearing through intermediate gears with working gears mounted on spindle shafts mounted in individual housings that can rotate around an axis eccentric to the spindle axis, but coinciding with the axis of the intermediate wheels (a S. p. No. 984708 of the USSR IPC V 23 В 39/16, publ. 30. 12. 82 g. Bull. No. 48).

A disadvantage of the known head is the design complexity, low rigidity of the installation of the spindles due to the large number of hinge devices, contributing to vibration during operation and reducing the quality of the processed surface, as well as the inability to control the distance between the centers.

The aim of the proposed device is to increase the accuracy and productivity of processing two holes, simplify and increase the rigidity of the structure, due to the quick and convenient installation of spindles at a given center distance and control of the latter according to the values of the dash scale.

This goal is achieved by the fact that in the housing of the proposed double-spindle head there is a gearbox made of cylindrical gears with a central pinion gear engaged with the working gears located on the spindle shafts that are mounted in bearing units fixedly mounted, one in the housing and the other on a stove having

the possibility of coaxial with the drive shaft rotation and centering in the housing with fixation of the set position. The plate also has a cut-out sector for the passage of the bearing assembly located in the housing. Due to the movement of the plate, it is possible to change the center-to-center distance of the spindles, the value of which can be controlled with a certain accuracy by the readings of the dashed scale plotted on the radial boundaries of the casing and the movable plate.

In FIG. 1 shows a double-spindle head, general view; front view, in FIG. 2 is a view in the direction A of FIG. 1 in the position of the maximum center distance, in FIG. 3 is a view in direction A of FIG. 1 at the minimum center-to-center distance.

The device consists of a housing 1, a drive shaft 2 with a coupling 3, a central drive; it has gears 4, driven gears 5.6, spindles 7.8, bearing assemblies 9.10, a movable plate 11, pressure plates 12 with screw fasteners 13.

A drive shaft 2 is mounted in the housing 1 through radial rolling bearings, on which the coupling half 3 is fixedly mounted for receiving the torque; its torque from the machine drive and the central drive shaft; gear 4 for transmitting torque to the gears of 5.6 spindles 7.8. The spindle 8 is mounted in a bearing assembly 10 fixedly attached to the lower part of the housing 1. The spindle

7 is placed in a bearing assembly 9 mounted on a plate 11, which is centered in the concentric groove of the housing 1 and has the ability to rotate around an axis coinciding in the axis of the drive gear. The plate 11 also has a cut-out sector for the passage of the bearing assembly 10. The position of the plate is fixed by clamping strips 12 with screw fastening 13. Due to the centering of the plate in the housing when it is rotated through any angle, the specified gear kinematics in the spindle drive is maintained. At the same time, turning the plate with the spindle unit mounted on it contributes to a change in the distance between the centers of both spindles. A reference risk is plotted on the radial surface of the slab, and a dashed scale with nonlinear breakdown is plotted on the adjacent surface of the cabinet, making it possible to control the set value of the center-to-center distance with a certain accuracy.

The proposed device operates as follows. The double-spindle head is mounted on an aggregate machine, while the drive coupling half of the 3 heads will mesh with the coupling half of the machine to absorb torque. When the machine drive is turned on, the torque will be transmitted from the coupling through the central drive gear 4 to the gears of 5.6 spindles 7.8, in the output ends of which a metalworking tool can be installed. To change the distance between

With the centers of rotation of the spindles, it is necessary to loosen the screw fastenings 13 of the pressure strips 12 and rotate the plate 11 by a certain angle, while the linear value of the center-to-center distance will be controlled by the position of the reference risk relative to the scale figures. After setting the required amount of center-to-center distance, the position of the plate is fixed by tightening the screw fastenings of the clamping strips.

The proposed spindle head with a simpler design allows simultaneous processing of two holes with a given center-to-center distance, which can vary due to the presence of a spindle unit mounted on a movable plate, and it also seems possible to control the set value of the center-to-center distance with a certain accuracy due to the position of the reference risk relative to dash line.

The proposed device was tested at the Ussuri combine repair plant when processing parts cheek left / right track chain sleeve-finger type.

Posted by: С. V. Inshakov (

Claims (3)

1. Duplex head containing a drive shaft located in the housing and spindles connected to the latter by means of gears, characterized in that, in order to increase productivity, accuracy and quality of processing of two holes, as well as simplify the design, the head is equipped with a bearing assembly rigidly connected to the housing one spindle and the bearing unit of the second spindle mounted on the plate, with the possibility of coaxial with the drive shaft rotation and centering in the housing with fixing the installed position . 2. The device according to claim 1, characterized in that, in order to increase the accuracy of control of the center-to-center distance, a reference reading of the risk is applied on the radial surface of the movable plate, and a dashed scale with non-linear breakdown is applied on the adjacent surface of the housing. 3. The device according to claim 2, characterized in that the movable plate has a cut sector for the passage of the bearing assembly, which is located on the housing.