JPS63169215A - Gate column type skiving machine - Google Patents

Abstract

PURPOSE:To prevent trouble of a cutting unit due to reaction of cutting resistance, by arranging a slide guide section of the cutting unit at the rising sections at the opposite sides of a gate column and fixing the opposite end sections of the cutting unit slidably to said slide guide section. CONSTITUTION:A slide guide section 5 of a cutting unit comprising a sliding table 7 and a cutter table 8 is arranged at the rising sections 4 at the opposite sides of a gate column 3, and the opposite end sections of the cutting unit are fixed slidably is said slide guide section 5. With such arrangement, the cutting unit sliding over the slide guide section 5 does not project further than the lower end of the slide guide section 5 even if the height of the lower edge of a beam of the gate column 3 from the face of a bed 1 at the lower edge of the slide guide section 5 is set higher than a predetermined level in order to ensure a space for carrying in/out a work in front/rear of the gate column 3. Consequently, the broach 10 does not hang over remarkably and trouble of the cutting unit due to reaction caused by the cutting resistance functioning onto the broach 10 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a turning device, ie, a skiving processing device, using a portal column type broach.

[Prior Art] In a conventional gate column type skiving processing device, a sliding guide portion of a cutting unit is provided on a crossbeam of a gate column.

[Problems to be Solved by the Invention] When a gantry column type skiving processing device is installed in a processing line, it is necessary to secure a space in the gantry column for transporting the workpiece. Therefore, in the conventional column type skiving processing equipment as mentioned above,
The height of the lower edge of the crossbeam as well as the lower end of the sliding guide from the bed surface must be a certain amount or more. Therefore, during cutting, the cutting unit that slides on the sliding guide protrudes beyond the lower end of the sliding guide, and the height difference between the lower end of the sliding guide and the cutting position of the cutting tool, that is, the broach. That is, the amount of overhang becomes a considerable amount. Therefore, a reaction force due to the cutting resistance exerts a large force on the cutting unit, and the cutting unit 1- is twisted.

The present invention eliminates such drawbacks of the prior art.

[Means for Solving the Problems] In the present invention, in the portal column type skiving processing device, the sliding guide portions of the cutting unit are provided on the upright portions on both sides of the portal column, and the sliding guide portions are Both ends of the cutting unit are slidably attached to the.

[Operation] The cutting unit slides on a sliding guide, so that the cutting tool on the cutting unit is moved perpendicularly to its axis relative to the workpiece being driven one revolution.

That is, the broach is fed and the skiving process is performed.

[Example] Embodiments of the invention will be described with reference to the drawings.

Incidentally, the skiving processing apparatus may be of a two-unit type, for example, as shown in FIG. 2, and may be appropriately installed in the processing line. One skiving processing device will be described below.

On the bed lh, headstocks 2, 2 are mounted coaxially and facing each other, and a portal column 3 is provided adjacent thereto. On the upright portions 4.4 on both the left and right sides of the portal column 3, sliding guide portions 5, 5 are provided from above up to at least the height of the axis of the main shaft.

A cutting unit 6 is attached to these sliding guide parts 5, 5 so as to be able to slide up and down.

The cutting unit 6 has sliding guide portions 5, 5. It is composed of a sliding table 7 that is slidably placed on the slide table 7, and a tool rest 8 that is mounted on the sliding table 7 so that its position can be adjusted. The sliding table 7 is provided on the crossbeam of the portal column 3, and is moved up and down by a cutting feed motor 9 whose operation is controlled by a control device (not shown) via a feed mechanism such as a screw mechanism. It is supposed to be done.

A broach 1O is mounted on the surface of the tool rest 8, which is parallel to the guide surfaces of the sliding guides 5, 5, with its longitudinal axis aligned with the feeding direction of the cutting unit 5, and with the cutting direction facing downward.

When an in-line type is adopted, a transfer device 6 is equipped with a receiver 11 and a transfer bar 12 disposed in a transfer direction perpendicular to the headstock axis, and a transfer bar lifting/retreat drive device 6. The operation and function of the above skiving processing device will be described.

When the cutting feed motor 9 is operated by a control device (not shown), the sliding base 7 moves to the sliding guide portion 5 of the portal column 3.
, 5-h in the vertical direction, and as a result, the broach 1
0 is driven in the direction of the sliding guide.

First, the tool rest 8 is set so that the broach 10 is at a predetermined cutting position with respect to the workpiece, and the cutting unit 6 is moved to the sliding guide portion 5 of the portal column 3 by operating the cutting feed motor 9.
, 5 Place it above and do that.

A workpiece (crank 4i111 in the illustrated example) is mounted on the headstocks 2, 2 facing each other, and is driven to rotate.

Thus, when the cutting feed motor 9 is operated and the cutting unit 6 is sent downward, the workpiece is skived by the broach IO.

When the broach 10 reaches the lower end position and cutting is completed, the cutting feed motor 9 is operated to return the cutting unit 6 upward, and the broach 10 reaches the upper end position and the machining is completed 6. In the case of the in-line type, the workpieces are carried in and out by passing through the gate-shaped column 3.

The movement of the transfer bar 12 up and down, forward and backward, and the release of the workpiece from the headstocks 2, 2 combine to carry out and carry in the workpiece supported by the receiver 11 as shown in L.

[Effects of the invention] By using the skiving processing device according to the present invention, it is possible to carry in and out workpieces from the front and back of the portal column, especially when the skiving processing device is installed in a processing line. Even if the height of the lower end of the sliding guide at the lower edge of the crossbeam of the gate-shaped column from the bed surface is set above a certain amount in order to secure the space for The cutting unit does not protrude beyond the lower end of the sliding guide,
Since the cutting tool does not greatly overhang from the lower end of the sliding guide, the cutting unit is not distorted by reaction force due to cutting resistance acting on the cutting unit.

[Brief explanation of the drawing]

Fig. 1 is a front view of the skiving processing device according to the present invention, Part 2 is a side view of the skiving processing device according to the present invention, and Fig. 3 is a partial cross-sectional view taken along the line ■-■ in Fig. 1. It is.

Claims (1)

[Claims] A portal column with sliding guides on the upright parts on both sides,
a cutting unit having both ends slidably attached to the sliding guide portion and driven up and down, and having a broach attached thereto;
A portal column type skiving processing device consisting of a portal column and an opposing headstock installed adjacent to it.