JPH07100250B2 - Groove processing equipment - Google Patents

Description

The present invention relates to a groove processing device and a processing method, and more specifically,
The present invention relates to a groove processing device that reduces the frequency of exchanging cutting tools and improves work efficiency.

[Prior Art] Generally, in the case of welding metal plates to each other, in order to increase the welding strength, both ends or one end of the welded part of the plate is groove-processed. Specific examples of this groove processing are shown in FIGS. 6 and 7.

In the groove processing method shown in FIG. 6, a square milling cutter (2) having a slanted side surface is attached to the tip of a rotating spindle (1), and the plate material (3 )
The edge part of is cut into an inclined surface with an angle α. However, in the above-described groove processing device, the groove angle α cannot be changed, and when changing the groove angle α, a plurality of processing devices are required. On the other hand, FIG. 7 shows a groove processing method capable of handling all groove angles α with one cutting tool. This groove processing is the spindle (4)
The front milling cutter (7) is attached to the tip of the plate to cut the end extension of the plate material (3).
Has a plurality of cutter tips (6) (6) ... Arranged and attached intermittently around the side surface of the tip holder (5).
Therefore, if the main shaft (4) is configured to be tiltable, the groove angle α can be arbitrarily and easily changed.
The front milling cutter is cut in a direction orthogonal to the feeding direction of the plate material (3) as shown in FIGS. 8 and 9.

[Problems to be Solved by the Invention] As described above, cutting with the face mill shown in FIG. 7 is performed in a direction orthogonal to the feed direction (see FIG. 8), and the cutter tip is a tip holder. It is arranged with a constant gap around the side surface of. Therefore, the ninth
As shown in the figure, the cutter tip (6) has to cut the plate material fed in after the cutting by the cutter tips arranged adjacent to each other at a stroke in the direction orthogonal to the feed direction by the fed amount. . Therefore, a large impact is intermittently applied to the cutter tip, and as a result,
The life of the cutter tip is greatly reduced. The shortening of the life of the above-mentioned cutter tip is particularly remarkable when cutting a difficult-to-cut material such as stainless steel, and the cutting tool had to be replaced after cutting about 4 m.

Therefore, in the present invention, the groove angle at the time of groove processing can be arbitrarily and easily changed, and further, the difficult-to-cut plate material,
For example, it is an object of the present invention to provide a groove processing device that extends the life of a cutting tool during groove processing of a stainless steel thick plate or the like.

[Means for Solving the Problems] In order to achieve the above object, the present invention is a groove processing device for processing an edge portion of a plate material into an inclined surface, which is rotatably supported by a housing and has an edge of the plate material. A cutting tool that is installed diagonally to the edge corner and has a cylindrical cutting surface that is attached to the shaft end of the spindle and that presses this cutting surface against the edge corner of the plate for rotary cutting. And a feed mechanism for relatively moving one or both of the spindle and the plate material in the direction orthogonal to the axis of the spindle and in the horizontal direction, a groove angle adjusting mechanism for appropriately changing the inclination angle of the spindle, and an axial direction. It is housed in a housing with a slide mechanism that has a slide body that is driven to slide, with a certain range of movement in the axial direction, rotatably supporting the main spindle, and slidable in the axial direction together with the main spindle. , Ha A groove processing device having an extension part extending from the inside of the housing to the outside of the housing through an opening provided in the housing, and a connecting body formed by connecting the extension part to the slide body. It is a thing.

[Operation] According to the above technical means, since the cutting tool has the cylindrical cutting surface and presses the cutting surface against the edge corner portion to perform cutting, the groove angle adjusting mechanism is driven and the spindle is arbitrarily set. By tilting the groove at any angle, any groove angle can be selected. Also,
As shown in FIG. 3, the cutter tip starts cutting parallel to the feed direction, so that the impact acting on the cutter tip is reduced.

When the slide mechanism is activated, the sliding movement of the slide body causes the connecting body to slide in the axial direction via the extension portion,
Furthermore, since the main spindle slides in the axial direction, the main spindle slides in the axial direction not only while the main spindle is stopped, but also during rotation of the main spindle, that is, during cutting by the cutting tool, and the cutting position of the cutting tool is set in the axial direction. It can be changed sequentially.

When the spindle is slid in the axial direction while feeding the spindle or the plate material during cutting, the cutting position of the cutting tool moves on the side surface of the cutting tool as the cutting progresses. Therefore, the cutting surface of the cutting tool can be used evenly,
It is possible to secure a uniform cutting force from the start of machining to the end of machining, without causing local wear of a part of the cutting tool. In addition, the cutting amount of a single cutter tip is reduced compared to the cutting amount of the entire cutting tool, so the life of a single cutter tip is relatively increased compared to the total cutting amount and the frequency of exchanging cutting tools is suppressed. can do.

[Embodiment] Hereinafter, a specific example of the groove processing device according to the present invention will be described with reference to FIGS. 1 to 5.

(10) is a main shaft, and the main shaft (10) is rotatably and slidably inserted into a housing (16) having a pivot (40) described later as a center of tilt. A cutting tool (12) is attached to the tip of the main shaft (10), and the cutting tool (12) has a throw-away side surface of a cylindrical tip holder (35) as shown in FIG. Use a plurality of cutter tips (36) (36) ... Attached in a spiral around the axis. Further, the other end of the main shaft (10) is connected to an output shaft (8) of a cutter drive motor (13) which is rotatable in forward and reverse directions by a rotation transmission means such as a spline joint which is slidably movable in the axial direction. The main shaft (10) is arranged so that its tip is located downward, so that
The cutting tool (12) cuts the lower corner of the edge of the plate (15).

(17) is a slide mechanism for slidingly moving the main shaft (10) in the axial direction. The slide mechanism (17) includes a cutter lifting motor (18), a ball screw (19) arranged in the axial direction of the main shaft (10), and a slide body (ball screw nut) (20) fitted to the ball screw (19). It is composed of. Cutter lifting motor (18) or cutter drive motor (13)
Is fixed to the cover (14) containing it, and its output shaft is connected to the ball screw (19). Hollow housings (16)
The movable body (t) in the axial direction is secured inside, and the connected body (11)
Is stored. The connecting body (11) is configured by a member that rotatably supports the main shaft (10) and that can slide in the axial direction integrally with the main shaft (10). Connected body (1
In (1), an extended portion (11a) extending from the inside of the housing (16) to the outside of the housing (16) through a slit-shaped opening (37) provided in the housing (16) is integrally formed. The tip of the extended portion (11a) is connected to the ball screw nut (20). Therefore, by driving the cutter lifting motor (18), the ball screw nut (20)
Slides in the axial direction, and the main shaft (10) locked by the ball screw nut (20) slides in the axial direction.

Reference numeral (21) is a groove angle adjusting motor fixed to the housing (16), and the pinion (22) is attached to its output shaft via a speed reducer (not shown). (23) is the pinion (2
2) A fan-shaped gear that meshes with the above fan-shaped gear (23)
Is fixed to the cross slide (24) arranged below. The center of the sector gear (23) is located on the axis of the pivot (40) between the bracket (38) fixed to the cross slide (24) and the support portion (39) fixed to the lower surface of the housing (16). is there.
Therefore, by appropriately driving the groove angle adjusting motor (21), the housing (16) and the main shaft (10) are integrally tilted about the pivot shaft (40), and as a result, the groove angle is arbitrarily adjusted. And it can be changed easily.

(26) is a cross slide front-rear drive motor that moves the cross slide (24) toward and away from the plate material (15).
(28) is a feed mechanism, and the feed mechanism (28) moves the cross slide (24) on the traveling frame (33) onto the main shaft (1).
It is a feeding mechanism that moves reciprocally in the horizontal direction in the direction orthogonal to the axis (0). The feed mechanism (28) is not limited to the motor (29), the ball screw (30) and the ball screw nut (not shown) as shown in FIG. It can be used.
In the present embodiment, the case where the main shaft (10) is fed is illustrated, but the plate member (15) may be fed. Reference numeral (31) is a plate retainer for pressing the plate member (15) placed on the table (32), and a plurality of plate retainers are arranged in parallel with the feeding direction. The plate retainer (31) presses the plate material (15) during cutting by the hydraulic cylinder (41).

A specific example of the groove processing method using the above-described groove processing device will be described below with reference to FIGS. 3 to 5.

The groove angle α is adjusted by driving the groove angle adjusting motor (21) to set the inclination angle of the main shaft (10) to a desired groove angle. Further, the cutting is performed by driving the cutter elevating motor (18) to slide the main shaft (10) downward and feeding the cross slide (24) rightward in FIG. Therefore, the cutting surface of the cutting tool (12) is initially near the tip of the cutting tool, but as the cutting progresses, that is, the cross slide (24) moves rightward on the traveling frame (33). As it moves, it moves to the vicinity of the root of the cutting tool (12). The speed of the slide movement of the spindle (10) is, for example, that the cutting portion of the cutting tool (12) moves while the cross slide (24) moves from one end to the other end of the plate material (15) in the longitudinal direction. It should be set so that it moves from the tip part of 12) to the root part. As a result, the cutting force of the cutting tool (12) can be maintained uniform from the start of processing to the end of processing, and only some of the many cutter tips (36) attached to the cutting tool (12) are violent. It is possible to prevent the situation of wear.

In the drawing, only the case where the main shaft (10) is driven clockwise is shown, but it is also possible to drive the main shaft (10) counterclockwise by reversing the direction of the cutting edge of the cutter tip (36). . Although the cross slide (24) feed direction is shown only from left to right in the drawing in FIG. 5, it is also possible to feed from right to left. In this case, the main shaft (10) rotation direction is also right. Both turning and counterclockwise rotation are possible.

[Effects of the Invention] In the present invention, since the cylindrical cutting surface is pressed against the edge corner of the plate material to perform the rotary cutting, it is possible to drive the groove angle adjusting mechanism to tilt the main shaft appropriately. The groove angle of is easily obtained. Moreover, since the cutter tip starts cutting parallel to the feed direction, the impact applied to the cutter tip is reduced. Therefore, the life of the tip is extended, and it is possible to stably cut even difficult-to-cut materials such as stainless steel.

At the time of cutting, since the spindle is slid in the axial direction while feeding the spindle or the plate material, the cutting position of the cutting tool moves along the axial direction on the side surface of the cutting tool as the cutting progresses. Therefore, even when processing an extremely long plate material or difficult-to-cut material, a part of the cutting tool is not locally worn, and a uniform cutting force can be obtained from the start of processing to the end of processing. The machining accuracy of the pre-machined surface is homogenized. Further, since the cutting amount of the single cutter tip is reduced as compared with the cutting amount of the entire cutting tool, the life of the single cutter tip is relatively increased as compared with the entire cutting amount. Therefore, the frequency of exchanging the cutting tool can be suppressed, and the work efficiency can be improved. Specifically, when stainless steel is cut, it is possible to cut about 100 m, and the tool life is 25 times longer than the conventional one.

The device of the present invention has a structure in which the slide body of the slide mechanism is slid along the axial direction, the sliding motion is transmitted to the main shaft through the connecting body, and the main shaft is slid in the axial direction. Like the device described in the publication
Since the main shaft is not slid by rotating one of the two members screw-fitted to each other, it is necessary to separately secure a rotation space corresponding to the rotation radius of the one member in the radial direction of the device. Absent. Therefore,
The size of the device can be reduced as compared with the conventional device.

[Brief description of drawings]

FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is a plan view of a cutting tool, FIG. 3 is an explanatory view showing a mode of upward cutting, and FIGS. 4 and 5 are bevel processing devices according to the present invention. 6 and 7 are perspective views showing a conventional groove processing method, and FIGS. 8 and 9 are cutting situations when cutting is performed by a face milling machine. FIG. (10) …… spindle (12) …… cutting tool (15) …… plate material (17) …… slide mechanism (21) …… groove angle adjusting motor (28) …… feed mechanism

Claims (1)

[Claims] 1. A groove processing device for processing an edge of a plate into an inclined surface, the main shaft being rotatably supported by a housing and obliquely arranged aiming at an edge corner of the plate. Is attached to the end of the shaft and has a cylindrical cutting surface, and the cutting tool that presses this cutting surface against the edge corners of the plate material for rotary cutting, and either one or both of the spindle or plate material In the housing, the feed mechanism that makes relative movement in the horizontal direction in the direction orthogonal to the axis of, the groove angle adjustment mechanism that appropriately changes the inclination angle of the spindle, the slide mechanism that has the slide body that is slid in the axial direction, and the housing It is housed with a range of movement in the axial direction secured, supports the main shaft rotatably, and is slidable in the axial direction together with the main shaft, from within the housing through an opening provided in the housing. Has extending portions extending outside Ujingu, beveling apparatus, characterized in that the extension portion comprises a formed by connecting the coupling body to the slide body.