JPH08323525A - Recessing device for interior of cylindrical work - Google Patents

Abstract

PURPOSE: To simply and accurately adjust a feed of cutting tools by providing the main body of a micrometer, which is capable of making fine adjustments of projection quantity of a tappet by rotation of an outer casing, on the hanging- down part of a movable table. CONSTITUTION: When grooves of different depth and diameter are to be machined on the interior of a workpiece of different or the same internal diameter, the projection quantity of a tappet 22 is adjusted by turning the outer casing 21 of the micrometer 20 and grasping the quantity numerically as watching the graduation. As a concrete adjusting work, adjusting is made only by numerical value using, for exapmle, an adjusting means 11, in such a way as moving the position of a rack 10 with respect to the movable table 6 from the initial position by the same magnitude as the preferable feed of the cutting tool 3 and putting back the tappet 22 by one half of the feed. Thus accuracy in an adjustment process can be improved and adjusting work can be carried out simply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for accurately processing a groove on the inner surface of a cylindrical work.

[0002]

2. Description of the Related Art As a conventional device of this type, for example, FIG.
~ There is something like that shown in FIG. This device is used when grooving on the inner surface of the body of a valve adjuster of an automobile. A cylindrical body, that is, a cylindrical work (1) is gripped by a chuck (2) and its central axis ( L) while rotating the cutting tool (3) such as a milling cutter inserted in the work (1) while rotating it around the axis line
By moving the cutting tool (3) in the direction orthogonal to (L) and also in the direction of the axis (L) as necessary, a groove (shown by an imaginary line) on the inner surface (1a) of the work (1). ) (4) is processed.

In order to move the cutting tool (3) in a direction orthogonal to the axis (L), a spindle holder (5) equipped with the cutting tool (3) is mounted on a movable table (6).

The movable table (6) is movable in a direction orthogonal to the axis (L), is mounted on an appropriate support base (7), and has a drive shaft (7) disposed in the support base (7). The sector pinion (9) fixedly fitted in 8) and the rack (10) provided on the movable table (6) side are brought into engagement with each other to move in the above-mentioned direction.

(11) is a sector pinion (9) and a rack (1
It is an adjusting means for adjusting the phase of meshing with (0), but since it is not directly related to the present invention, detailed description thereof will be omitted. A hanging portion (6a) is provided at one side end of the movable table (6), and the tip of the hanging portion (6a) abuts the side surface of the support table (7), so that the movable table (6a) is 6)
Of the adjustment bolt (12a) and lock nut (12b), which was designed to stop the feed of the tool and determine the depth of the groove (4) to be processed.
A stopper (12) consisting of and is provided.

[0006]

In the conventional device as described above, the feeding amount of the cutting tool (3) is adjusted by the adjusting means (11).
The rack (10) is moved by the
Insert a dial gauge (not shown) into the through hole (13) formed in the drooping part (6a) of (6) to keep the space between the drooping part (6a) and the side end surface of the support base (7). Adjusting bolt (12a) while measuring accurately
It was decided by adjusting the amount of protrusion.

However, such work is complicated, and the rack (10) can be operated by operating the adjusting means (11).
There is a possibility that the phase between the pinion (9) and the pinion (9) may be misaligned, the slow feed stroke may change, and the cutting tool (3) may be easily broken during the work.

In view of the above-mentioned problems of the prior art, the present invention provides an inner surface groove processing apparatus for a cylindrical work, which enables easy and accurate adjustment of the feed amount of the cutting tool. The purpose is to do.

[0009]

According to the present invention, there is provided the above-mentioned object of providing a cutting tool inserted in a rotating cylindrical work,
In the inner surface grooving device for a cylindrical work, which is designed to perform grooving on the inner surface of the work by moving in a direction orthogonal to the rotation center axis of the work, while holding the cutting tool, a direction orthogonal to the axis. A movable table mounted on a support so that the movable table is movable to one end is provided with a hanging part, and the outer cylinder is rotated on the hanging part so that the protrusion amount of the protrusion can be finely adjusted. The main body is mounted, and the tip of the protrusion comes into contact with one side surface of the support base to stop the feeding of the movable table.
It is solved by determining the depth of the groove to be processed.

[0010]

According to the present invention, since the stopper for contacting the side surface of the support table and stopping the feeding of the movable table is formed by the main body of the micrometer, the feeding amount of the cutting tool can be accurately and quickly numerically determined. It can be adjusted.

[0011]

FIG. 1 shows an embodiment of the present invention. It should be noted that the same members as those of the conventional one shown in FIGS. 2 to 4 are shown with the same reference numerals and detailed description thereof will be omitted.

In this embodiment, by rotating the outer cylinder (21) on the hanging portion (6a) of the movable table (6), the protrusion
A body part (20) of a known micrometer capable of finely adjusting the protrusion amount of (22) as a specific numerical value is attached, and
When the tip of (22) abuts one side surface of the support base (7), the feeding of the movable table (6) is stopped and the depth of the groove to be machined is determined.

That is, the conventional stopper (12) is characterized by being formed by the main body of the micrometer.

Reference numeral (23) is a set screw for fixing the main body (20) to the hanging portion. Although not shown in the figure, the main body (20) is a well-known body in which the protrusion (22) is adjusted by the outer cylinder (21) and then the protrusion (22) is fixed so as not to inadvertently move. It should be equipped with a clamp.

With the structure of this embodiment, when the grooves having different depths or diameters are to be machined on the inner surface of the work having different inner diameters or the same inner diameters, the outer cylinder (21) is rotated to project. Since the protrusion amount of the child (22) can be numerically grasped and adjusted while looking at the scale, the accuracy at the time of adjustment can be improved and the adjustment work can be easily performed.

As a concrete adjusting work, for example, by adjusting means (11), the position of the rack (10) with respect to the movable table (6) is moved from the initial position by the same amount as the desired feed amount of the cutting tool (3). It is also possible to move and to return the stem (22) by half of the above-mentioned feed amount, and to adjust only by the numerical value.

[0017]

According to the present invention, since the stopper for contacting the side surface of the support table and stopping the feed amount of the movable table is formed by the main body portion of the micrometer, the feed amount of the cutting tool can be accurately numerically determined. And it can be adjusted quickly.

Therefore, the precision in adjusting the groove depth can be improved, and the adjusting work can be performed easily.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an embodiment of the present invention.

FIG. 2 is a partial transverse plan view of a conventional device.

FIG. 3 is likewise a vertical sectional front view.

FIG. 4 is a view taken along the line AA of FIG.

[Explanation of symbols]

 (1) Workpiece (1a) Inner surface (2) Chuck (3) Cutting tool (4) Groove (5) Spindle holder (6) Movable table (6a) Hanging part (7) Support base (8) Drive shaft (9) Sector Pinion (10) Rack (11) Adjusting means (12) Stopper (12a) Adjustment bolt (12b) Lock nut (13) Through hole (20) Micrometer body (21) Outer cylinder (22) Projector (23) Set screw (L) axis

Claims (1)

[Claims] 1. An inner surface groove of a cylindrical work, wherein a cutting tool inserted into a rotating cylindrical work is moved in a direction orthogonal to a rotation center axis line of the work to form a groove on the inner surface of the work. In the processing device, while holding the cutting tool, a hanging part is provided at one end of a movable table mounted on a support so as to be movable in a direction orthogonal to the axis, and an outer cylinder is rotated on the hanging part. Thus, by mounting the main body of the micrometer capable of finely adjusting the amount of protrusion of the protrusion, the tip of the protrusion abuts one side surface of the support base, thereby stopping the feeding of the movable table, An inner surface groove processing device for a cylindrical work, which determines the depth of a groove to be processed.