JP2000005918A - Groove forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a groove in a workpiece with high accuracy while achieving miniaturization and cost reduction. SOLUTION: A groove forming device is provided with a surface plate 10 whose upper surface is made into a reference plane and a groove-forming cutter 20 capable of being drivingly rotated while projecting upward from the reference plane 11 of the surface plate 10 by a predetermined length, and can form a groove (a) in the surface to be machined W1 of a workpiece W by moving the workpiece W while the surface to be machined W1 is in contact with the reference plane 11 of the surface plate 10. The groove forming device is provided also with a pressure means capable of pressing the workpiece W against the reference plane 11 of the surface plate 10 from above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove forming apparatus capable of forming a groove on a work surface of a work.

[0002]

2. Description of the Related Art For example, a groove is sometimes formed on a surface of a metal sheet metal in order to form a hairline or a notch for bending. FIG. 3 shows a conventional configuration of a groove forming apparatus (1P) used for such groove processing.

In FIG. 3, reference numeral 10 denotes a surface plate, and reference numeral 20 denotes a groove forming cutter. A flat reference surface 11 is formed on the upper surface of the surface plate 10. Further, the groove forming cutter 20 is used.
Is formed with a cutting edge on its outer peripheral surface, and is rotated about an axis by a motor (not shown) or the like.

[0004] With the groove forming cutter 20 being driven to rotate, the work W is placed on the reference surface 1
1 while being brought into contact with the workpiece surface W
1, a groove (for example, a V-groove a having a depth d = 0.5 mm) is formed.

[0005]

By the way, in the above-mentioned groove forming apparatus 1P, in order to form a groove (a) having a predetermined depth with high precision on the work surface W1 of the work W, the work surface of the work W is required. The surface (lower surface) on the opposite side to W1 must be cut with high precision in parallel with the surface to be processed W1, which has a disadvantage that the preparation is troublesome.

In addition, cutting proceeds in a state where the chips are not discharged smoothly from the place where the grooves are being cut by the groove forming cutter 20 and the chips are stopped. As a result, the degree of finish and dimensional accuracy are reduced. May occur.

[0007] Chips generated during the cutting process are:
Most of the work W falls onto the work surface W1 and adheres.
For this reason, such chips are likely to be cut again by the groove forming cutter (so-called double cutting), which is a main cause of damaging the cutter. In addition, it takes time and effort to remove the chips attached to the work W, and there is a disadvantage that the working efficiency is poor.

Therefore, the groove forming apparatus 1P described above is hardly used at present.

[0009] Recently, it is common to perform groove processing using a groove forming apparatus 1P 'shown in FIG.

The groove forming apparatus 1P 'includes a cutting tool 20B for forming a groove in a cutting tool, a cutter supporting member 21, a cutter moving guide mechanism (such as a linear guide member 22), and a cutter driving mechanism (not shown, a cutter driving motor). , Etc.), and the tip end (the cutting edge) of the cutter 20B is linearly moved while piercing the work surface W1 of the work W, thereby forming a scratch groove (a) on the work surface W1. .

In such a groove forming apparatus 1P ', the cutting does not proceed in a state where the chips are stopped at the cutting portion, and the double cutting is hardly performed, and the groove can be formed with high precision.

However, as compared with the groove forming apparatus 1P shown in FIG. 3, the number of components is large, and a large cutting resistance acts on the cutter 20B when forming the groove. Have to do
The equipment must be built firmly as a whole,
It has the disadvantage of increasing costs. Further, it is necessary to remove the chips attached to the work surface W1 of the work W, which is troublesome. Further, since the tip (cutting edge) of the cutter 20B is strongly pressed against the work surface W1 of the work W, the back side portion where the groove (a) is formed protrudes, and the product (for example, metal decorative article) In some cases, there may be a problem from the viewpoint of external appearance and the like.

An object of the present invention is to provide a groove forming apparatus capable of forming a groove on a work surface of a work with high precision while reducing the size and cost.

[0014]

According to a first aspect of the present invention, there is provided a base plate having an upper surface serving as a reference plane, and a groove rotatable in a state of protruding a predetermined length above the reference plane of the base plate. A groove forming apparatus is provided which is provided with a forming cutter, and moves a work while bringing a work surface into contact with a reference plane of a surface plate so that a groove can be formed on the work surface by the groove forming cutter.

In this invention, since the groove forming cutter rotates and cuts the work surface of the work, the cutting resistance acting on the cutter is small. Therefore, a large power is not required to rotationally drive the cutter, and the entire apparatus does not need to be formed particularly strong, so that downsizing and cost reduction can be achieved. In addition, since the chips generated by the cutting fall under their own weight, they do not stop at the cutting portion and do not perform double cutting, thereby realizing high-precision cutting.

Therefore, grooves can be formed with high precision on the surface to be processed of the work while reducing the size and cost.

According to a second aspect of the present invention, there is provided a groove forming apparatus provided with a pressing means capable of pressing a work surface of the work against a reference surface of the surface plate from above.

According to this invention, even when the work is light in weight, it is possible to completely prevent the work surface from rising from the reference surface of the surface plate by the pressing means when forming the groove. Therefore, the same operation and effect as those of the first aspect of the invention can be obtained, and a groove can be formed on the surface to be processed with higher precision even if the workpiece is a light weight object.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) As shown in FIG. 1, a groove forming apparatus (1) includes a surface plate 10 having an upper surface serving as a reference plane 11, and a predetermined length above the reference surface 11 of the surface plate 10. And a groove forming cutter 20 that can be rotationally driven in a state protruding only
The workpiece W is moved while the processing surface W1 is brought into contact with the reference plane 11 of the surface plate 10 so that the groove forming cutter 2 is formed on the processing surface 11.
A groove (for example, a V-groove a) can be formed at 0.

In this embodiment, a work W such as a metal sheet metal is linearly moved with respect to the groove forming cutter 20 by using a moving means (not shown). Note that the operator may manually move the work W linearly.

Further, the groove forming cutter 20 has a V
A rotary tool having a cutting edge 20a for forming a groove,
A cutting blade 20 is formed through an opening 15 penetrated through the platen 10.
The portion a is mounted on the rotating shaft 16 so as to protrude above the reference plane 11 by a predetermined length. The rotating shaft 16 is
It is rotatably mounted on the surface plate 10 via the mounting frame 17 around an axis.

The groove forming cutter 20 is rotated in a predetermined direction (for example, clockwise in FIG. 1) by the rotation driving means 30.
Is driven to rotate. The rotation driving means 30 includes a pulley 31 attached to the rotating shaft 16, a motor 34 fixed to the attaching frame 17, a pulley 32 attached to the rotating shaft of the motor 34, and both pulleys (31, 32). It is formed from the endless belt 33 stretched. When the motor 34 is driven, the cutter 20 is rotated in a predetermined direction via the pulleys (31, 32) and the endless belt 33.

Here, the motor 34 is provided with the groove forming cutter 2.
A motor with as small a power as possible is used within a range that does not hinder the formation of the V-groove by zero. Similarly, components such as the mounting frame 17 have been reduced in size as long as the formation of the V-groove is not hindered.

The mounting frame 17 is provided with a chip storage box 19 for housing chips generated by cutting by the groove forming cutter 20 so as to be taken out.

Next, the operation of this embodiment will be described. In order to form the V-groove a on the work surface W1 of the workpiece W,
The work W is set so that the work surface W1 contacts a predetermined position of the reference surface 11 of the surface plate 10. Next, the groove forming cutter 20 is driven to rotate, and in this state, the work W is linearly moved (moved to the left in FIG. 1) with respect to the cutter 20 using the moving means. Thereby, the work surface W1 of the work W
Is cut by the cutting edge 20a of the groove forming cutter 20 (for example, a V-shaped groove a having a depth d = 0.5 mm).

At this time, since the groove forming cutter 20 rotates to cut the work surface W1 of the work W, the cutter 20
The cutting force acting on the surface is small. Therefore, even when the cutter 20 is driven by the motor for small power, the V-groove a can be formed smoothly. In addition, since the chips generated during cutting fall under their own weight, they do not stop at the cutting location,
Also, high-precision cutting can be realized without double cutting. Note that the chips are stored in the chip storage box 19 almost without adhering to the processing surface W1 of the work W, so that the chip processing can be further easily performed.

According to this embodiment, the platen 1
The workpiece W is linearly moved while the cutter 20 is being rotationally driven while the work surface W1 is in contact with the reference surface 11 of the surface plate 10 and the cutter W is rotated.
Since the groove a can be formed, the V-groove a can be formed with high precision on the work surface W1 of the workpiece W while reducing the size and cost.

Further, since the chip storage box 19 for storing the chips generated with the groove forming cutter 20 is provided, the chip processing can be further easily performed.

(Second Embodiment) A second embodiment is shown in FIG. The basic configuration of the groove forming apparatus 1A is the first
Is the same as that of the embodiment (FIG. 1), but the pressing means 4
0, the work W is placed on the reference surface 11
The groove (a) can be formed with a higher degree of accuracy by completely preventing the groove (a) from rising from the surface.

The same components as those in the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be simplified or omitted.

The pressing means 40 includes a pressing roller 41 and an urging force applying means 42, and is formed so as to press the work surface W1 of the work W against the reference surface 11 of the surface plate 10 from above. The urging force applying means 42 includes a roller support member 42A, a coil spring 43, a screw shaft 44, a position adjusting nut 45, a handle 46, and an apparatus main body (not shown) to which the surface plate 10 is attached via an attachment member 47. It is fixed to.

The screw shaft 44 is mounted on a mounting member 47 via a position adjusting nut 45 so that the position in the vertical direction can be adjusted, and a handle 46 is mounted on an upper portion thereof.
A roller support member 42A is attached to a lower portion of the screw shaft 44 so as to be vertically movable. Roller support member 42
A pressing roller 41 is rotatably mounted on the lower end of A. A coil spring 43 is interposed between the roller support member 42A and the position adjusting nut 45.

Therefore, when the screw shaft 44 is moved up and down by rotating the handle 46, the roller support member 4
The distance between 2A and the position adjustment nut 45 changes, and the force with which the coil spring 43 biases the roller support member 42A changes. Thereby, the pressing force with which the pressing roller 41 presses the work W can be adjusted.

In the groove forming apparatus 1A, even when the work W is light in weight, the work surface W1 can be completely prevented from rising from the reference surface 11 of the surface plate 10 by the pressing means 40 during groove formation. Therefore, the groove a can be formed on the work surface W1 of the work W with higher precision.

The pressing means 40 is formed so that the pressing force of the pressing roller 41 against the work W can be adjusted. Therefore, the pressing means 40 is optimal depending on the material of the work W and the depth of the groove (a) to be formed. The workpiece W can be pressed toward the surface plate 10 with a strong force, and the workpiece W can be cut by the cutter 20 with high precision while linearly moving the work W more smoothly.

[0036]

According to the first aspect of the present invention, there is provided a surface plate having an upper surface serving as a reference plane, and a groove forming groove rotatable with the surface protruding a predetermined length above the reference plane of the surface plate. A cutter is provided so that the workpiece can be moved while bringing the work surface into contact with the reference plane of the surface plate so that the groove can be formed on the work surface by the groove forming cutter. Grooves can be formed on the work with high precision. Further, according to the second aspect of the present invention, since the pressing means capable of pressing the work surface of the work to the reference plane of the surface plate from above is provided, the same effect as that of the first aspect of the invention can be obtained. Even if the work is light, the grooves can be formed with higher precision.

[Brief description of the drawings]

FIG. 1 is a side sectional view for explaining a first embodiment of the present invention.

FIG. 2 is a side sectional view for explaining a second embodiment of the present invention.

FIG. 3 is a view for explaining an example of a conventional groove forming apparatus.

FIG. 4 is a view for explaining another example of the conventional groove forming apparatus.

[Explanation of symbols]

 1, 1A Groove forming device 10 Surface plate 11 Reference plane 20 Groove forming cutter 40 Pressing means W Work W1 Work surface

Claims (2)

[Claims] A surface plate having an upper surface serving as a reference plane; and a groove forming cutter rotatable in a state of protruding above the reference surface of the surface plate by a predetermined length. A groove forming apparatus characterized in that a groove is formed on a surface to be processed by a groove forming cutter by moving the surface while making contact with a reference plane of a surface plate. 2. The groove forming apparatus according to claim 1, further comprising a pressing means capable of pressing a surface to be processed of the work to a reference plane of the surface plate from above.