RU216975U1 - DOUBLE SPINDLE MACHINE DRIVE - Google Patents

Abstract

The utility model relates to the processing of materials by cutting and can be used in metal-cutting CNC machines in the construction of two-spindle driven mandrels. The mandrel contains a housing in which a drive shaft is placed and rotary spindles connected to it by means of gears, each located in its seat and configured to be fixed on the housing at different center-to-center distances. The body is made with two slots located on the seats of the rotary spindles. The mandrel contains two fixing screws, made with the possibility of tightening the slots and fixing the rotary spindles through clamping. Provides reliable fixation of the spindles in a predetermined position.1 z.p. f-ly, 4 ill.

Description

Field of technology to which the utility model belongs

This utility model relates to CNC metal cutting machines, and more specifically to two-spindle drive mandrels of the machine, including a housing in which a drive shaft is located and rotary spindles connected to it by means of gears, each located in its seat, made with the possibility of fixation on the body with different center-to-center distances between spindles.

State of the art

Two-spindle drive mandrels of the machine are known from the prior art, including a housing in which a drive shaft is placed and rotary spindles connected to it by means of gears, each located in its seat, configured to be fixed on the housing at different center-to-center distances between the spindles, for example , described in the utility model patent of the Russian Federation No. 33886, published in 2003.

This device is the closest in technical essence to the claimed utility model and is taken as a prototype for the proposed utility model. The disadvantage of this device is the lack of reliability of fixing the spindles with different center-to-center distances between the spindles.

Utility Model Disclosure

Based on this original observation, the present utility model mainly aims to propose a two-spindle drive mandrel of a machine tool, including a housing in which a drive shaft is located and rotary spindles connected to it by means of gears, each located in its seat, made with the possibility fixation on the body at different center-to-center distances between the spindles, which allows at least smoothing out the above drawback, namely, to provide the possibility of increasing the reliability of fixing the spindles in the desired position, which is the technical task of this utility model.

To achieve this, the housing has two slots located near the seats of the rotary spindles, and the mandrel includes two fixing screws, made with the possibility of tightening the slots and fixing the rotary spindles through clamping.

Thanks to these advantageous characteristics, it becomes possible to securely fix each spindle, since when the fixing bolts are tightened, the contact area is much larger.

There is a possible embodiment of the utility model, in which the body has degree scales near each rotary spindle.

Thanks to this advantageous characteristic, it becomes possible to provide a simple visual possibility of setting the required distance between the axes of the spindles.

The set of essential features of the proposed utility model is unknown from the prior art for devices of a similar purpose, which allows us to conclude that the utility model meets the criterion of "novelty".

Brief description of the drawings

Other distinctive features and advantages of the utility model are clear from the description below for illustration and non-limiting, with reference to the accompanying drawings, in which:

fig. 1 shows the appearance of a double-spindle driven mandrel of a machine tool, front view, the position at which the maximum distance between the spindles is achieved, according to the utility model,

fig. 2 shows the side view of a double-spindle driven mandrel of a machine tool, the position at which the maximum distance between the spindles is achieved, according to the utility model,

fig. 3 shows the appearance of a two-spindle driven mandrel of the machine, front view, the position at which the minimum distance between the spindles is achieved, according to the utility model,

fig. 4 shows the external view of the body of a double-spindle driven mandrel of a machine tool, according to the utility model.

The figures indicate:

1 - rotary spindles,

2 - body,

3 - fixing screw,

4 - drive shaft (attachment to the machine),

5 - degree scale,

6 - slot,

7 - spindle seat,

D1 - maximum distance between spindles,

D2 - minimum distance between spindles.

According to figures 1-4, the two-spindle drive mandrel of the machine includes a housing 2, in which a drive shaft 4 is placed and rotary spindles 1 connected to it by means of gears, each located in its seat 7, made with the possibility of fixing on the housing with different center-to-center distance between spindles 1.

The body 1 has two slots 6 located near the seats 7 of the rotary spindles, and the mandrel includes two fixing screws 3, made with the possibility of tightening the slots 6 and fixing the rotary spindles 1 through clamping.

Advantageously, the housing 2 has degree scales 5 near each rotary spindle 1.

Implementation of the utility model

Duplex drive mandrel machine is used as follows. (an example of use that does not limit the application of the utility model is given).

When the fixing screws 3 are loosened, it is possible to set the required distance between the spindles 1, after which it is possible to fix this position and simultaneously machine two holes at once.

Industrial Applicability

The double-spindle driven mandrel of the machine can be implemented by a specialist in practice and, when implemented, ensures the implementation of the stated purpose. The possibility of implementation in practice follows from the fact that for each feature included in the formula of the utility model on the basis of the description, the material equivalent is known, which allows us to conclude that the criterion "industrial applicability" for the utility model and the criterion "completeness of disclosure" for the utility model.

In accordance with the proposed solution, the applicants produced a prototype of a two-spindle driven mandrel of the machine. Comparative tests were carried out with other types of drive shaft fixation.

Prototype tests have shown that the breakaway torque of the movable drive shafts is 30% higher than other types of fixation, in addition, the displacement of the spindles when tightening the fixing bolts is eliminated.

All this, ultimately, ensures the implementation of the achieved technical result - an increase in the reliability of fixing the spindles in the desired position.

Claims (2)

1. A two-spindle drive mandrel of a machine tool, comprising a housing in which a drive shaft is placed and rotary spindles connected to it by means of gears, each located in its seat and configured to be fixed on the housing at different center-to-center distances between the spindles, characterized in that the housing has two slots located on the seats of the rotary spindles, and the mandrel contains two fixing screws made with the possibility of tightening the slots and fixing on the seats of the rotary spindles through clamping. 2. Two-spindle drive mandrel of the machine according to claim 1, characterized in that the body has degree scales on the seats around each rotary spindle.

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