RU2190504C2 - Adjustable boring head - Google Patents

Abstract

FIELD: plastic metal working, boring precise holes in coordinate and diamond-and-carbide tool boring machines. SUBSTANCE: head includes housing, elastically deformed cutter holder and fine adjustment mechanism. Head is provided also with mechanism for preliminary adjustment. Fine adjustment mechanism is in the form of fine adjustment screw arranged normally relative to rotation axis of head and spacing rod mounted in cavity of housing in such a way that its one end engages with above mentioned fine adjustment screw and its other end - with mechanism for preliminary adjustment. EFFECT: enhanced accuracy of adjusting cutter, improved quality of holes bored in different type machine tools. 1 dwg

Description

 The invention relates to the processing of metals by cutting and can be used for boring precise holes on coordinate, diamond-boring and other machines.

 Known adjustable boring head for processing holes of small diameter, which contains a housing, a mechanism for adjusting the cutter to a size consisting of an elastically deformable tool holder and a micrometer screw. The disadvantage of this boring head is the low precision settings (see French patent 2674159, CL 23 V 29/03, 25 Q 3/12).

 Known adjustable boring head for diamond boring machines, which contains a housing, an elastically deformable tool holder and a mechanism for fine-tuning the cutter to size. This head is taken as a prototype (see ed. St. 307851, 23 V 29/04).

 The disadvantages of the prototype are the relative complexity of the design and significant dimensions.

 The task of the invention is to improve the quality of machining precise holes on various types of machines.

 The technical result obtained by the implementation of the invention is to increase the controlled accuracy of tuning the cutter to size.

 The specified technical result is achieved in that in an adjustable boring head containing a housing, an elastically deformable tool holder, a presetting mechanism, a fine tuning mechanism, the latter is made in the form of a fine tuning screw located perpendicular to the axis of rotation of the head, and a spacer rod installed in the cavity of the housing and interacting one end with a fine adjustment screw, and the other end with a presetting mechanism.

Compared with the prototype, the proposed technical solution has the following distinctive features:
- the fine-tuning mechanism is made in the form of a fine-tuning screw and a spacer rod;
- the fine adjustment screw is located perpendicular to the axis of rotation of the head;
- the spacer rod is installed in the body cavity and interacts at one end with a fine adjustment screw, and at the other end with a presetting mechanism.

 Based on the foregoing, we can conclude that the proposed technical solution has novelty and inventive step.

 The invention is illustrated in the drawing, which shows an adjustable boring head, section.

 The adjustable boring head comprises a housing 1, an elastically deformable tool holder 2, a presetting mechanism 3, which is a screw, a fine-tuning mechanism. The fine-tuning mechanism is made in the form of a fine-tuning screw 4 and a spacer rod 5. A fine-tuning screw 4 is located perpendicular to the axis of rotation of the head. A cavity 6 is made in the housing 1, in which a spacer rod 5 is installed, which interacts at one end with the fine adjustment screw 4, and the other end with the presetting mechanism 3. The connection of the spacer rod 5 and the fine adjustment screw 4 is a swivel connection 7, allowing backlash-free reverse adjustment.

 Adjustable boring head works as follows. The pre-setting of the cutter to the diametric size is carried out outside the machine and by the presetting mechanism 3. The final setting of the cutter or fine tuning during operation is carried out by the fine adjustment screw 4. When the fine adjustment screw 4 is moved, the projection length of the spacer rod 5 on the axis of rotation of the head increases (wedging) and, as a consequence, the rotation of the elastically deformable tool holder 2. The presence of a small angle between the axis of rotation of the head and the axis of the spacer rod 5 allows you to ensure Vat controlled movement of the tool to 2 microns.

Claims (1)

 An adjustable boring head comprising a housing, an elastic deformable tool holder and a fine-tuning mechanism, characterized in that it is equipped with a presetting mechanism, wherein the fine-tuning mechanism is made in the form of a fine-tuning screw located perpendicular to the axis of rotation of the head, and a spacer rod, which is installed in in the body of the cavity and interacts at one end with the specified fine-tuning screw, and the other with the presetting mechanism.