JPH0829451B2 - Gate column type skiving machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a turning device using a broach of a column-column type, that is, a skiving device.

[Prior Art] In the conventional column-type skiving apparatus of the related art, a sliding guide portion of a cutting unit is provided on a cross beam of a gate-shaped column.

[Problems to be Solved by the Invention] When deploying a gate column type skiving apparatus in a processing line, it is necessary to secure a space for conveying a workpiece in the gate column. Therefore, in the conventional gate column type skiving apparatus as described above, not only the lower edge of the cross beam but also the height of the lower end of the sliding guide from the bed surface needs to be a certain amount or more. is there. Therefore, during cutting, the cutting unit that slides on the sliding guide part protrudes from the lower end of the sliding guide part, and the difference in height from the lower end of the sliding guide part to the cutting position of the cutting tool, that is, the broach. That is, the amount of overhang is a size that can be achieved. Therefore, the reaction force due to the cutting resistance largely acts on the cutting unit, and the cutting unit is twisted.

The present invention eliminates such drawbacks of the prior art.

[Means for Solving Problems] The gate-shaped column type skiving apparatus of the present invention is
Adjacent to the front side of the portal column, with sliding guides provided in the vertical direction on the front of the uprights on the left and right sides, and adjacent to the space between both uprights of the portal column. And a pair of headstocks that are provided in a coaxial relationship facing each other and are slidably mounted at both ends on the sliding guides on the left and right sides of the portal column, and are vertically driven, and the cutting direction is The cutting unit with the broach attached downwards, and between the upright parts of the gate-shaped column and between the opposing headstocks, is arranged in the horizontal transport direction perpendicular to the headstock axis, and receives the receiving metal that supports the workpiece. It is composed of a transfer bar and a built-in transfer bar.

[Operation] The cutting unit slides vertically on both slide guide portions of the column, and as a result, the broach is driven in the direction of the slide guide portions.

First, set the broach so that the workpiece is supported at both ends by both headstocks so that it is in the specified cutting position, place the cutting unit above the sliding guide of the gate column, and then set the cutting unit. When driven downward, the work piece is skived by the broach.

When the broach reaches the machining end position and the cutting is completed, the cutting unit is returned upward, the broach reaches the ascending end position, and the machining is completed. Therefore, unloading the work
Carrying in is carried out in the form of passing through a gate-shaped column, but the above-mentioned carrying-out / carrying-in of the work supported by the received money is carried out in combination with the elevating / retracting of the transfer bar and the release of the work of the headstock. Is performed.

[Examples] Examples of the present invention will be described with reference to the drawings.

The skiving processing device may be of a double type as shown in FIG. 2, for example, or may be appropriately installed in the processing line. One skiving machine will be described below.

Headstocks 2, 2 are mounted on the bed 1 so as to face each other in a coaxial relationship, and a portal column 3 is provided adjacent to the headstocks 2. Sliding guides 5, 5 are provided on the upright portions 4, 4 on both left and right sides of the gate-shaped column 3 from above to at least the height of the axis of the spindle, and these sliding guides 5, 5 are provided. Is mounted so that the cutting unit 6 can slide up and down.

The cutting unit 6 is composed of a slide base 7 having both ends slidably mounted on the slide guides 5, 5 and a tool rest 8 mounted on the slide base 7 so that the position thereof can be adjusted. ing. The slide base 7 is vertically moved via a feed mechanism such as a screw mechanism by a cutting feed motor 9 which is provided on a cross beam of the gate-shaped column 3 and whose operation is controlled by a controller (not shown). It is supposed to be done.

On the surface of the tool rest 8 which is parallel to the guide surfaces of the sliding guide portions 5, 5, a broach 10 is attached so that its longitudinal axis coincides with the feed direction of the cutting unit 5 and the cutting direction is downward.

Further, in order to be able to take an in-line type, a transfer bar 12 is provided, and a transfer bar 12 arranged in a transfer direction perpendicular to the headstock axis, and a transfer bar elevating / retracting drive device are installed. ing.

The operation and function of the above skiving device will be described.

Cutting feed motor 9 by a control device (not shown)
When operating the slide table, the slide base 7 moves to the slide guide portion of the gate-shaped column 3.
It slides up and down on 5, 5 so that the broach 10 is driven in the direction of the slide 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 feed motor 9 is operated to move the cutting unit 6 to the sliding guide portion 5, of the gate-shaped column 3.
5 Place the work piece (crank shaft in the illustrated example) on the headstocks 2, 2 facing each other, and rotate it.

Thus, when the cutting feed motor 9 is operated to feed the cutting unit 6 downward, the workpiece is skived by the broach 10.

When the broach 10 reaches the lower end position and the cutting is completed, the cutting feed motor 9 is operated to return the cutting unit 6 to the upper position, the broach 10 reaches the upper end position, and the machining is completed. Therefore, the work is carried in and out by passing through the gate-shaped column 3. In the case of the in-line model, the transfer bar 12 is moved up and down and the work of the headstocks 2, 2 is released. Together with this, the above-mentioned unloading and loading of the work supported by the deposit 11 will be carried out.

[Effects of the Invention] By using the gate-shaped column-type skiving apparatus according to the present invention, the skiving apparatus can be arranged in the processing line, and a space for loading and unloading the workpiece in that case is secured. Therefore, even if the height from the bed surface of the lower end of the sliding guide part at the lower edge of the cross girder of the gate-shaped column is above a certain amount, the cutting unit that slides on the sliding guide part slides. Since the cutting tool does not protrude beyond the lower end of the portion and the cutting tool does not largely overhang from the lower end of the sliding guide portion, the cutting unit is not twisted by the reaction force due to the cutting resistance acting on the cutting unit.

Moreover, since both ends of the cutting unit are supported by the sliding guides provided on the front of the upright portions on both the left and right sides of the gate-shaped column, the rising position of the cutting unit is not restricted by the cross beam and the rigidity is high. Is maintained, and high-precision machining is possible.

[Brief description of drawings]

FIG. 1 is a front view of a skiving apparatus according to the present invention, FIG. 2 is a side view of the skiving apparatus according to the present invention, and FIG. 3 is a partial sectional view taken along the line III-III of FIG. is there. 1: Bed, 2: Headstock 3: Gate column, 4: Upright part 5: Sliding guide part, 6: Cutting unit 7: Sliding base, 8: Tool rest 9: Cutting feed motor, 10: Brooch 11 : Receipt, 12: Transfer bar

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoichi Kamiya 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (56) References 58-132614 (JP, U) 50-82089 (JP, U) JP-B-45-25475 (JP, B1) Patent 144550 (JP, C1)

Claims (1)

[Claims] 1. A gate-shaped column in which sliding guides are provided in the vertical direction on the front surfaces of the upright portions on the left and right sides, and a space adjacent to the front side of the gate-shaped column and between both upright portions of the gate-shaped column. A pair of headstocks are installed coaxially with each other with a space corresponding to each other, and both ends are slidably mounted on the sliding guides on both the left and right sides of the gate-shaped column and driven vertically. In addition, it is arranged in the horizontal transport direction perpendicular to the spindle axis, passing between the upright parts of the portal column and between the opposing spindle stocks and the cutting unit with the broach attached downward. A gate-shaped column-type skiving machine consisting of a transfer bar with a support to support it.