JPH0724167Y2 - Broaching machine - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to an improvement of an inner surface broaching machine for processing metal or the like, and more particularly to a phase adjusting device for a broach and a work at the time of broaching in double or triple pulling. A broaching device including the same.

(Prior Art) In the conventional inner surface broaching device, the phase alignment of the brooch and the work at the time of the second or third time of the double-drawing or the triple-drawing is performed as shown in FIG. Immediately before the guide portion (4) of the broach (3 ') for inserting the broach (3') into the groove (2 ', formed by the first or second machining) of the work (2),
The brooch (3 ') is temporarily stopped, and the groove (2') of the work (2) is visually inspected to guide the broach (3 ').
It was matched with the convex part of.

(Problems to be solved by the invention) In such a conventional device, the operation procedure of the double-drawing or the triple-drawing in the inner broaching is troublesome and time-consuming, or the operator makes an erroneous operation to damage the work. There is a risk that the broach may be damaged.

The object of the present invention is to solve the problems of the conventional device.
It is not necessary to stop the broach once to align the groove of the work with the convex part of the broach guide part in the multi-drawing or triple-drawing process, and it is possible to reduce the cycle time and prevent operator's erroneous operation. Another object of the present invention is to provide a broaching device that does not damage the work or damage the broach.

(Means for Solving Problems) Therefore, the present invention solves the above-mentioned problems of the conventional device by providing the broaching device described in the utility model registration claim.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a front sectional view (a) of a main part of a broaching device according to the present invention and a plan sectional view (b) taken along line bb thereof. In the broaching device of the present invention, the pool head (6) is provided with a direction determining pin (7) which is a rotation stop for the broach (3), and the broach (3) also has a flat surface (8) which complements it. . The guide (1) extends upward from at least three places above the pool head (6), and the tip of the guide (1) is inserted into the brooch (3) shown in FIGS. 1 (a) and 2 (a). At the time position, the tip end engagement which is mounted on the mounting jig (5) and which can be engaged with the groove (2 ') of the work (2) which is pulled once or twice and has the groove (2') It has a convex part (9) which is a part. As shown in FIGS. 1 (a) and 1 (b), in the embodiment, three guides (1) extend from the upper part of the pool head (6), and the broach (3) has a triangular notch (10). Is provided so as not to interfere with the guide (1) when inserting the brooch (3) into the pool head (6). The state of FIG. 1 (a) (b) is
The brooch (3) is shown in the position when it is inserted into the pool head (6), but the position of the clamp pin (11) is shown on the right side when the brooch (3) is inserted and the sleeve (12) descends and clamp pin (11) is inserted in the recess (13).
Is inserted so that the tip of the brooch (14) can pass through. On the contrary, the sleeve (12 ') is pushed up on the left side, and the clamp pin (11') continues to the tip (14) of the brooch (3). The left and right are shown in different states with the pool head (6) holding the brooch (3) by pressing the small diameter portion (15).

Next, the operation will be described with reference to FIG. In the position of FIG. 2 (a), the pool head (6) is in the starting position at the upper end, and the broach (3) is gripped by the retrieving head (not shown) and inserted into the pool head (6), so that the pool head (6) descends. Has been done. At the position of the pool head (6), that is, at the position when the brooch is inserted, the tip convex portion (9) of the guide (1) engages with the groove (2 ') of the work (2) in the embodiment of about 10 mm. Is set. Fig. 2 (a)
In this state, the work (2) is attached to the attachment jig (5), and the groove (2 ') of the work (2) is aligned with the convex portion (9) of the guide (1). The broach (3) and the work (2) are phase-matched by mounting the broach (3) on the mounting jig (5) so as to be inserted into the convex portion (9). Thereafter, as shown in FIG. 2 (b), the broach (3) is supported by a retrieving head (not shown) at a circumferential angular position where rotation is restricted by the directional positioning pin (7) in the pool head (6). , And is inserted into the pool head (6) at a proper position, and the pool head (6) descends and enters the broach cutting process.
In FIG. 2 (c), the pool head (6) is at the broach cutting completed position, after which the work (2) is removed, the pool head (6) is returned to the position in FIG. (3) is gripped by a retrieving head (not shown), and the sleeve (12 ') is lifted up at the position on the right side of FIG. 1 (a) and returned to the position of FIG. 2 (a) for broach lowering. Complete one cycle.

(Effect of the Invention) As described above, according to the present invention, in the double-drawing or triple-drawing processing of the inner surface broaching device, the broach is temporarily stopped to align the groove of the work with the convex portion of the broach guide. It is not necessary to visually align with each other, and the phase of the broach and the groove of the work can be accurately aligned simply by inserting the groove of the work into the guide tip engaging part on the mounting jig when mounting the work, so the cycle time Can be reduced,
It has become possible to provide a broaching device in which an erroneous operation by an operator is prevented and a work is not damaged or a broach is damaged.

[Brief description of drawings]

FIG. 1 (a) is a front sectional view of an essential part of a broaching apparatus according to an embodiment of the present invention, FIG. 1 (b) is a plan sectional view taken along line bb of FIG. 1 (a), and FIG. (A), (b) and (c) are front cross-sectional views of a main part similar to the reduced size of Fig. 1 (a) showing different operating states of the device of Fig. 1 (a), and Fig. 3 is a conventional broaching process. It is a principal part perspective view of an apparatus. 1 ... Guide, 2 ... Workpiece 2 '... Groove, 3 ... Brooch 5 ... Mounting jig, 6 ... Pool head 7 ... Orientation pin (rotation stop) 9 ... Convex part (tip engagement) Part) 10 …… Notch

Claims (1)

[Scope of utility model registration request] 1. A front end engagement that extends from at least three locations on an upper portion of a pool head having a detent for a broach and is capable of engaging with a groove of a work to be mounted on a mounting jig at a position when the broach is inserted. A broaching device including a guide having a portion, wherein the broach is provided with a notch so as not to interfere with the guide when being inserted into the pool head.