JP2525130B2 - Corner arc processing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to plastic, wood,
The present invention relates to a corner arc processing machine that processes a corner of a thin plate such as metal into an arc.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a surface plate (22), a motor (25), and a blade (26) rotationally driven by the motor (25).
A corner arc machining machine (1) composed of a center pin (31) protruding above the surface plate (22) is used for corner arc machining. The center pin (31) has a center axis coaxial with the center of rotation of the blade (26) and has a cylindrical shape with the same diameter as the diameter of the blade. Further, the protruding height of the center pin (31) from the surface plate (22) is lower than the thickness of the jig plate (71) described later.

Using the corner arc processing machine (1), a thin plate
In order to process the corner of (8) into an arc, as shown in FIG.
A jig plate (71) having the same arc radius as the thin plate (8) to be machined is manufactured by another machine, the thin plate (8) and the jig plate (71) are overlapped, and a clamp device or the like is fixed. Pad with means (51) (5
2) and fix the thin plate (8) to the upper side.
2) Put it on. The height of the tip of the cutter (26) of the corner arc processing machine (1) is adjusted to the thickness of the jig plate (71). Next, the motor (25)
Is energized to drive the blade (26) to rotate. Copy the end surface of the jig plate (71) to the center pin (31) and manually operate the blade.
At (26), the corners of the thin plate (8) are machined into arcs.

[0004]

As described in the prior art, in order to process the corners of the thin plate (8) into an arc, it is necessary to previously provide an arc-shaped jig plate (71) to be processed. Or, the jig plate (71) must be manufactured each time the arc processing is performed. Furthermore,
Due to the change in the pressing strength of the jig plate against the center pin (31), the thin plate (8) may have irregularities on the arc-machined surface. The present invention clarifies a corner arc processing machine for solving the above problems.

[0005]

[Means for Solving the Problems] In order to solve the above problems, a corner arc processing machine (1) is provided with a blade (26) which is driven to rotate by a motor (25) above a surface plate (22). A corner processing jig (4) is rotatably arranged between the board (22) and the blade (26). The center long hole (2
7) is opened, and the center block (3) is provided in the center elongated hole (27) so as to be slidable and positionable. Further, on the jig plate (41) of the corner processing jig (4), there are provided contact plates (51) (52) and a fixture (53) for fixing the workpiece, and the jig plate (41)
On the back surface of the jig plate (2), a jig block (6) which is rotatably engaged with the center block (3) and serves as a jig rotation center is provided.
It is provided so that it can be slid and positioned along the long hole (44) opened straight in 1).

[0006]

[Operations and effects] In the corner arc processing machine (1) having the above-mentioned configuration, the thin plate (8) to be processed is placed on the jig plate (41) of the corner processing jig (4), and the left and right contact plates ( The end face of the thin plate (8) is pressed against the 51 (52), and the thin plate (8) is fixed to the jig plate (4) by the fixture (53).
1) Fix on top. By sliding the jig block (6) along the long hole (44), the distance between the two sides adjacent to the corner of the thin plate (8) to be processed and the rotation center of the jig block (6) is Fix the jig block (6) to match the arc diameter of the corner to be processed. Furthermore, a corner arc processing machine (1)
By sliding the center block (3) of the blade along the center elongated hole (27),
The shortest horizontal distance from the rotation center in (3) is made to match the arc diameter to be machined.

Next, by placing the jig plate (41) on the surface plate (22) and engaging the jig block (6) with the center block (3), the corner processing jig (4) is fixed. Mounted freely on the board (22). At this time, the thin plate on the corner processing jig (4)
When the blade (26) lowers the blade (26), the corner processing jig (4) is set on the surface plate (2) so as to stand by at the position where the blade peripheral surface abuts.
2) Rotate up. Match the height of the tip of the blade (26) with the height of the jig plate (41) of the corner processing jig (4),
Energize (25) to rotate the blade (26). The corner processing jig (4) is rotated and the corners of the thin plate (8) are processed by the blade (26). The processing ends when one corner of the thin plate (8) is processed into an arc.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. As shown in Figure 1, a corner arc processing machine (1)
Is composed of a corner processing machine body (2) and a corner processing jig (4) rotatably mounted on the surface plate of the body (2). In the corner processing machine body (2), the surface plate (22) is attached to the upper part of the pedestal (21), and the column (23) is attached to one end of the surface plate (22).
Is fixed vertically, the column (23) is equipped with an arm (24) that can be moved up and down and positioned, and the motor (25)
The blade (26) on one end of the shaft driven by the motor (25)
Is installed. In addition, a center block (27) parallel to the longitudinal direction of the central portion of the surface plate (22) is opened, and a center block that can be slid and positioned along the center slot (27).
(6) is attached.

As shown in FIG. 2, a center pin moving screw (29) having a spiral groove is provided in the pedestal (21) below the center elongated hole (27) in parallel with the center elongated hole (27). It is provided. A center pin moving handle (28) is directly connected to one end of the center pin moving screw (29), or is connected to the center pin moving screw (29) via a speed reducing means such as a gear. 29) rotates. Further, the center block (6) is screwed onto the center pin moving screw (29), and the center block (6) is guided to the center elongated hole (27) by the rotation of the moving screw (29). While moving, move on the moving screw (29). Further, a center pin (31) is provided at the tip of the center block (6).

Further, as shown in FIG. 1, a stopper (20) is mounted on the side surface in the longitudinal direction of the surface plate (22) so as to be positionable by a screw or the like, and one end of the corner processing jig (4) is Corner processing jig by hitting the stopper (20)
Limit the rotation of (4).

As shown in FIGS. 1 to 4, the corner processing jig (4) can be detachably mounted on the surface plate (22) of the corner arc processing machine (1). Jig plate for corner processing jig (4)
(41) Grooves (42) (43) are formed on the surface so as to form a right angle, and right and left contact plates (51) (52) for fixing the workpiece are fitted so that they can be moved and fixed. There is. Left and right contact plate (51) (5
A fixture (53) having a clamp structure for fixing the thin plate (8) is attached to either or both of (2). A lock lever elongated hole (44) is formed in the direction of the bisector between the left and right contact plate fixing grooves (42) (43).

In the center of the back surface of the jig plate (41) of the corner processing jig (4), a bottomed plate moving long hole (45) is formed in the same direction as the lock lever long hole (44). ing. A jig block (6) having a bottomed jig hole (61) is fitted in the plate moving elongated hole (45) so as to be movable in the longitudinal direction.
As shown in FIG. 5, a lock lever (55) is attached to the surface of the jig block (6) opposite to the opening of the jig hole (61). It projects from the hole (44) onto the surface of the jig plate (41). Lock lever (5
By moving 5) in the longitudinal direction of the lock lever elongated hole (44), the jig block (6) linked to the lock lever (55) moves in the longitudinal direction of the plate moving elongated hole (45). To do. The lock lever (55) is composed of a locking means such as a screw, and can fix or move the jig block (6). By fitting the center pin (31) into the jig hole (61), the corner machining jig (4) can be attached to the corner arc machining machine (1).

As shown in FIG. 6, the end face of the thin plate (8) is pressed against the left and right contact plates (51) (52) of the corner processing jig (4), and the thin plate (8) is fixed by the fixture (53). Fix it. Further, the lock lever (55) is loosened so that the horizontal minimum distances A, A from the center of the jig hole (61) to both side surfaces of the thin plate are matched with the arc radius to be processed.

As shown in FIG. 2, a corner arc processing machine (1)
The center pin moving handle (28) is rotated so that the horizontal minimum distance B from the center of the center pin (31) to the blade peripheral surface matches the arc radius to be machined.

However, as shown in FIG. 7, the center pin (31) of the corner arc machining machine body (2) is fitted into the jig hole (61) of the corner machining jig (4) to mount the jig (4). Center pin (31)
It pivots freely in the horizontal plane. Turn the jig plate (41) clockwise to move the left contact plate (5
At the position where 1) is perpendicular to the center pin moving elongated hole (27), one end of the jig plate (41) hits the stopper (20) mounted on the surface plate (22), Move the position of (20) and fix it.

The right contact plate (52) of the corner processing jig (4) is
Adjust the orientation of the corner processing jig (4) on the surface plate (22) so that it is perpendicular to the center pin moving elongated hole (27). The height of the tip of the blade (26) mounted on the rotary shaft of the motor (25) of the corner arc processing machine (1) is lowered to the height of the jig plate (41) surface of the corner processing jig (4). And fix it.
Next, rotate the motor (25) to turn the corner processing jig (4).
Rotate to the right and rotate until a part of the jig plate (41) hits the stopper (20) fixed to the surface plate (22), and the thin plate (8)
Arc the corner of. When a part of the jig plate (41) hits the stopper (20), the rotation of the motor (25) is stopped.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope. The configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

For example, in the center block (3) and the jig block (6), in the embodiment, the center block (3) side is the center pin and the jig block (6) side is the jig hole (61). However, a hole may be opened on the side of the center block (3) and a pin may be projected on the side of the jig block (6).

The fixing means of the thin plate (8) fixed on the jig plate (41) of the corner processing jig (4) is not limited to the one having the clamp structure.

By attaching a resin plate or the like having a thickness of about 2 mm to the jig plate (41) with double-sided tape, even if the height of the lower end of the blade is set lower than the thickness of the jig plate due to an error. The tip of the jig plate (41) and the blade (26) can be protected.

Further, by turning the center pin moving handle (28) of the main body of the corner processing machine (2) and moving the position of the center block (3), the radius of curvature to be processed can be changed, and the corner processing can be performed. The depth of cut can be changed by moving the lock lever (55) of the jig (4) and changing the position of the jig block (6).

[Brief description of drawings]

FIG. 1 is a perspective view of a corner arc processing machine.

FIG. 2 is a longitudinal sectional view of a corner arc processing machine.

FIG. 3 is a plan view of a corner processing jig.

FIG. 4 is a cross-sectional view of FIG. 3 taken along the line ZZ and viewed in the direction of the arrow.

FIG. 5 is a side view of a jig block.

FIG. 6 is a perspective view when a thin plate is fixed to a corner processing jig.

FIG. 7 is a perspective view when a thin plate is mounted on the corner arc processing machine.

FIG. 8 is a front view of a conventional example.

9 is an enlarged sectional view taken along line XX of FIG. 8 and viewed in the direction of the arrow.

[Explanation of symbols]

 (1) Corner arc processing machine (2) Corner arc processing machine body (22) Surface plate (26) Tool (3) Center block (31) Center pin (4) Corner processing jig (6) Jig block (61) Jig hole (8) Thin plate

Claims (1)

(57) [Claims] 1. A blade (2) which is rotationally driven by a motor (25).
6) is arranged above the surface plate (22), and a corner processing jig (4) is rotatably arranged between the surface plate (22) and the cutting tool (26). A center long hole (27) is opened in the center,
A center block (3) is provided so as to be slidable and positionable in the center long hole (27), and a contact plate (51) for fixing a workpiece is provided on a jig plate (41) of a corner processing jig (4). ) (52)
It also has a fixture (53), and on the back side of the jig plate (41),
The jig block (6), which is rotatably engaged with the center block (3) and serves as the center of rotation of the jig, slides and positions along the long hole (44) opened straight in the jig plate (41). A corner arc processing machine that can be installed.