RU1796356C - Device for machining shaped hole - Google Patents

Abstract

Usage: in the field of metalworking and can be used on multi-spindle turning machines for machining shaped holes from the longitudinal support of the machine without stopping its spindle. SUMMARY OF THE INVENTION: the device comprises a base to which the pivot housing is hingedly coupled. A template is attached to the case. The bearing assembly is covered by a glass. A mandrel carrying a tool is placed inside the bearing assembly. 3 ill.

Description

The invention relates to the field of metalworking and can be used on multi-spindle turning machines for machining shaped holes from a longitudinal support of a machine without stopping its spindle.

The aim of the invention is to increase accuracy and ensure ease of maintenance by accurately positioning the tool in the center of the hole to be machined.

The goal is achieved in that the device with the base of which is mounted pivotally connected to. the housing is rotatable, enclosing a bearing assembly with a mandrel placed inside the latter rotatable around an axis, supporting a shaped tool and provided with an axially mounted axially movable stop, provided with a cup enclosing the bearing assembly that is movably mounted relative to the housing,

fixed on the last removable template and placed at the base of the finger, the axis of which is aligned with the plane of the template intended for contact with the tool, the mandrel provided with a thread located on the side opposite to the tool holder, designed to interact with the corresponding stop thread.

Providing the device with a cup enclosing the bearing assembly makes it possible to process the seat in the housing at the installation site of the device, which eliminates half the manufacturing and installation errors, increasing processing accuracy.

In addition, the possibility of moving the cup along the axis of the housing provides, within certain limits, the unification of the device, i.e. improves serviceability. Indeed, there may be such cases when the machined shaped surface is deep inside the part and this depth

With

WITH

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there may be more distance from the end of the mandrel to the template. This is where the possibility of moving the glass in the body will help us.

Providing the device with a removable template, to the plane of which the working end of the tool is brought when it is installed, guarantees the constancy of the position of the end of the tool and, accordingly, increases the accuracy of the machined holes regardless of the change of tool.

Providing the device with a finger placed at the base, the axis of which is aligned with the plane of the template intended for contact with the tool, makes it possible to free itself from the influence of angular adjustment of the tool on the centricity of the working end of the tool and the hole being machined, which also increases the accuracy of processing.

Providing the mandrel with a thread located on the side opposite to the tool holder, designed to interact with the corresponding stop threads, allows you to adjust the axial position of the tool without removing the latter from the mandrel, which provides ease of maintenance, and in conjunction with the template allows clear visual control of correctness installation of the tool, which entails an increase in the accuracy of processing.

Thus, all of the above listed features taken together make it possible to achieve the object of the invention; increasing accuracy and ensuring ease of maintenance due to the exact installation of the tool in the center of the hole being machined.

In FIG. 1 shows a view of a device; incision; in FIG. 2 - device, operating position; in FIG. 3 is a section AA in FIG. 1.

The device contains a base 1 (Fig. 1.2, 3), a finger 2 (Fig. 2, 3), a housing 3 (Fig. 1, 2, 3) with tightening screws 4 (Fig. 2, 3) and with a strap 5 ( Fig. 1, 2, 3), template 6 (Fig. 1, 3), cup 7 (Fig. 1, 2, 3), bearing assembly 8 (Fig. 1), mandrel 9 (Fig. 1, 2, 3 ) with a screw 10 (Fig. 1, 3), a tool 11 (Fig. 1, 2, 3), an axial stop 12 with a lock nut 13, compression nuts 14 (Fig. 1, 2, 3), adjusting screws 15 (Fig. . 1,2), bolts 16 for securing the housing 3 (Fig. 1.2, 3), screws 17 and 18 (Fig. 1) with a washer 19 for securing the base 1 (Fig. 1, 2. 3) in dovetail guides the longitudinal support of the machine using the liner (in the drawing n e shown).

The initial configuration of the device is as follows, Device without bearing assembly 8 (Fig. 1),

cup 7 (Fig. 1, 2, 3), tool 11 and template 6 (Fig. 1, 3) is mounted on the longitudinal support of the multi-spindle lathe and pre-fixed with the liner and base 1 (Fig. 1, 2, 3) screws 17 and 18 (Fig. 1). Washer 19 is not placed. The bolts 16 (Figs. 1, 2) are loosened and the housing 3 (Figs. 1, 2, 3) with the adjusting screws 15 (Figs. 1, 2)

through the bar 5 (Fig. 1, 2, 3) it rotates on the axis 2 (Fig. 2, 3) to the zero position, which is visually observed on the scale applied to the right end of the sole of the casing 3 (Fig. 1. 2, 3) (not shown in the drawing). Bolts

5 16 (Figs. 1, 2) are tightened, a boring cutter is fixed in the machine spindle and a hole is drilled in the housing 3 (Figs. 1, 2, 3) under the cup 7 of the device. Then, a cup of 7 s is inserted into the opening of the housing 3

With a bearing assembly 8 (Fig. 1), a shaped tool 11 is inserted into the mandrel 9 (Figs. 1, 2, 3), and a removable template 6 (Figs. 1, 3) is fastened to the front of the sole of the casing 3. Having previously set roughly the outset of tool 11 of the tool 11 (Fig. 1, 2, 3) from the mandrel 9 and the cup 7 from the housing 3, the cup 7 is secured with the tightening screws 4 (Fig. 2, 3). Then, turning the stop 12 (Figs. 1, 2, 3), the tool 11 is brought to its stop in the template 6 (Figs. 1, 3).

0 After that, the tool 11 (Figs. 1, 2, 3) in the mandrel 9 is fixed with a screw 10 and the stop 12 is locked with the lock nut 13, and the template 6 (Figs. 1.3) is removed. Loosen the bolts 16 (Fig. 1, 2), rotate the casing 3 with adjustable screws 15 (Fig. 1. 2, 3) to the required angle of installation of the tool 11 to the axis of the Machine spindle on a scale on the base of the casing 3, after which the bolts 16 ( Fig. 1, 2) are tightened. The screw 18 (Fig. 1) is unscrewed, a washer 19 is placed under its head, and the screw is tightened. The device is ready to go. When the machine is turned on, the device is fed to the part together with the longitudinal support of the machine. On contact, rotating parts

5 with the end face of the tool 11 (Figs. 1, 2, 3), the latter starts to rotate synchronously with the mandrel 9 in the bearing assembly 8 (Fig. 1). In this case, the cutting plane of the tool relative to the part makes

0 reciprocating movement for each revolution of the machine spindle, and the contact of the cutting tool 11 (Figs. 1, 3) and the workpiece occurs at one point, which moves along the closed contour of the shaped hole, deepening by the amount of feed for each spindle revolution.

After the end of the treatment cycle, the device with the longitudinal support of the machine moves to its original position.

The use of the device increases the accuracy of processing and provides ease of maintenance.

Claims (1)

SUMMARY OF THE INVENTION A device for processing a shaped hole with a base pivotally mounted for rotation, a housing enclosing a bearing assembly with a mandrel supporting the shaped tool inside and equipped with an axially movable stop, characterized in that to increase accuracy and maintain serviceability through precise installation and 77 7 8 10 fifteen tool in the center of the said hole, the device is equipped with a cup covering the bearing assembly, mounted for movement relative to the housing, mounted on the last removable template and placed at the base of the finger, the axis of which is aligned with the plane of the template intended for contact with the tool, while the mandrel is provided with from the side opposite to the fastening of the tool, a thread designed to interact with the corresponding thread, which is made on the yelling. 12 & 73 75 Figure 1 Fie. 3