JPH07328841A - Cutting edge for chamfer and chamfering device using this cutting edge - Google Patents

Abstract

PURPOSE:To reliably perform chamfer by simple operation, improve a workmanship condition, and prevent generation of a secondary burr. CONSTITUTION:A pair of corresponding left and right support plates 41 are erected in front of a placing stand 3 arranged on a base 2, and guide rods 42 are arranged in parallel in a front edge part of the placing stand 3 between the support plates 41, and an edge holder to be guided by these guide rods 42 is arranged, and positioning rods 43 are arranged in top parts of the support plates 41, and a positioning piece 34 is arranged perpendicularly to the positioning rods 43 in one side part on the placing stand 3. A cutting edge 8 is arranged on an edge holder 5 so as to shave off a ridgeline part of a chamfer object G projecting outside from both an edge part of the placing stand 3 and lower edge parts of the positioning rods 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering cutting blade for scraping off a sharp ridgeline portion of a tangible material made of metal or synthetic resin, and a chamfering device using this cutting blade.

[0002]

2. Description of the Related Art Various blocks made of metal or synthetic resin (hereinafter referred to as work pieces) used for various purposes are used to cut a large lump into a square by an electric discharge machine, an electric saw, an electric cutter or a milling machine. Manufactured by cutting or flat cutting. In the rectangular work piece thus obtained, the ridge portion is sharp, and burrs formed during cutting or plane cutting often remain, which is dangerous in handling. Since the appearance is unsightly, a so-called chamfering operation is usually performed to scrape off the ridge.

Conventionally, the chamfering operation has generally been carried out by sanding, but it is very troublesome to sand a large number of workpieces one by one on an industrial scale, and it takes much labor and time. Had the problem.

Therefore, a rotary file for electrically rotating a cylindrical file or a hand-held chamfer using a rotary cutting blade in place of the file may be used.
If such a tool is used, the chamfering process is easily performed by moving the chamfering machine while pressing the outer peripheral surface of the rotary file and the rotary cutting blade against the ridge line of the work piece,
Work efficiency is significantly improved compared to conventional sanding.

[0005]

By the way, since the above-mentioned conventional chamfering machine is operated by an operator, the chamfering machine always applies a uniform force along the ridgeline of the work piece. Is difficult to move, and the force applied to the ridgeline will eventually vary. Therefore, since the chamfering amount of the ridge portion fluctuates, unevenness is formed in the chamfered portion, and the appearance becomes very unsightly.

On the other hand, in the case of the above chamfering device, since the rotary cutting blade moves while being guided by the guide rail,
The force applied to the work piece fixed on the workbench is constant, and there is no unevenness in the chamfered portion.However, the rotation noise of the electric motor for rotating the cutting blade and the ridge line portion of the rotating cutting blade Noise such as cutting noise that occurs when cutting
There is a problem that the working environment becomes poor.

Further, when the rotary cutting blade as described above is used, the ridge line portion of the work piece is cut and the sharpened state is eliminated, but a new secondary burr is generated during the rotary cutting, and eventually this double cutting is caused. Since the process for removing the next burr has to be performed, there is also a disadvantage that the chamfering operation cannot be completely labor-saving.

Therefore, it is considered that the chamfering method is used for the chamfering. However, in the case of the planer hanging method, there is no problem when the work piece is made of soft synthetic resin, but when the work piece is made of metal, the amount cut by one planer cutting is extremely small, There is a problem that it requires a plurality of operations, and in the end, a great deal of labor is required for proper chamfering, which is not practical.

The present invention has been made in order to solve the above-mentioned problems, and the chamfering is performed easily and surely, contamination of the working environment is avoided as much as possible, and the finished state is good. It is an object of the present invention to provide a cutting blade for chamfering that does not cause secondary burr and a chamfering device using this cutting blade.

[0010]

A chamfering cutting blade according to claim 1 of the present invention comprises an adhered portion to be mounted on a predetermined blade holder, and a cutting edge portion provided on the tip side of the adhered portion. The cutting edge portion is formed by a plurality of cutting edges protruding in series along the entire length in the cutting direction, and the amount of protrusion of each cutting edge gradually increases from the leading edge of the cutting direction toward the rear cutting edge. It is characterized by being dimensioned as follows.

In the chamfering cutting blade according to claim 2 of the present invention, a unit blade is formed by an adhered portion to be mounted on a predetermined blade holder and a blade tip provided on the tip side of the adhered portion. It is characterized in that the protruding amount of the blade tip of each unit blade is adjustable while a plurality of unit blades are mounted in series on the blade holder.

A chamfering device using a cutting edge for chamfering according to a third aspect of the present invention is a chamfering device for removing a sharpened state by scraping off a ridge line portion of a workpiece, and mounting the workpiece. A mounting table, a positioning member for positioning a workpiece mounted on the mounting table, and a blade holder for holding a cutting blade according to claim 1 or 2 for scraping off a ridge line portion of the workpiece.
A guide member for guiding the movement of the blade holder, and by moving the blade holder toward the workpiece in a state where the workpiece placed on the mounting table is positioned, It is characterized in that it is configured so that the ridge line portion of the work piece is scraped off.

A chamfering device using a cutting edge for chamfering according to a fourth aspect of the present invention is a chamfering device for removing a sharpened state by scraping off a ridge line portion of a work piece, the work piece being placed on a substrate. Is provided with a pair of left and right support plates corresponding to the front of the table, and a guide rod is provided between the pair of support plates in parallel with the front edge of the table. A blade holder that reciprocates between the pair of support plates while being guided by the guide rod is provided, and one side surface of the workpiece placed on the mounting table rests on the top of the pair of support plates. Positioned so that the ridge line on the lower part of the work piece projects outward from both the edge of the mounting table and the lower edge of the positioning rod when the work piece hits the positioning rod. The rod is positioned and is located on one side of the table above. The positioning rod is provided with a positioning piece at a right angle, and the blade holder scrapes off a ridge line portion of a work piece protruding outward from both the edge portion of the mounting table and the lower edge portion of the positioning rod. It is characterized in that it is provided with the cutting blade described in.

A chamfering device using a cutting blade for chamfering according to a fifth aspect of the present invention is the chamfering device using a cutting blade according to the third or fourth aspect, wherein the blade holder is rotatable about a support shaft. It is characterized in that the protrusion amount of each blade is adjustable by adjusting the amount of rotation around the support shaft.

A chamfering device using a cutting blade for chamfering according to a sixth aspect of the present invention is the chamfering device using a cutting blade according to the fourth or fifth aspect, wherein the blade holder is provided with an operation lever. The blade holder is configured to move while being guided by the guide rod by operating the operation lever.

A chamfering device using a cutting edge for chamfering according to claim 7 of the present invention is the chamfering device using a cutting edge according to claim 4 or 5, wherein a male screw is screwed on the guide rod. In addition, the rod is rotatably provided around the axis between the support members, and the blade holder is provided with a female screw screwed into the male screw of the guide rod. Is.

[0017]

According to the cutting blade of the above-mentioned claim 1, since the protruding amount of the cutting edge is gradually increased from the cutting edge in the advancing direction, the cutting edge positioned on the mounting table is machined. If you move the blade holder toward the object, the edge of the work piece that has the smallest amount of protrusion at the beginning slightly scrapes off the ridge line of the work piece, and the next blade edge further scrapes off the slightly scraped part. After that, the part where the tip of the tip is scraped off is sequentially scraped off by the blade tip at the rear.

As described above, since the ridge line portion of the workpiece is sequentially scraped off in multiple stages, it is possible to reduce the amount of cutting by one cutting edge, and the ridge line portion can be cut by a plurality of cutting edges in a reasonable state. Is progressively cut, and a suitable amount of chamfering can be performed with a single movement of the blade holder.

According to the cutting blade of the second aspect, since the protruding amount of the cutting edge of each unit blade can be adjusted, a plurality of cutting edges of the cutting blade can be adjusted by adjusting the protruding amount of the cutting edge. Can be easily set so that the protruding amount gradually increases from the blade edge in the traveling direction of the blade holder. Further, the amount of protrusion of each cutting edge can be appropriately set according to the material of the workpiece, and it is not necessary to previously prepare a plurality of types of cutting blades having different amounts of protrusion of the cutting edge. Good.

According to the chamfering device using the chamfering cutting blade of the third aspect, when the blade holder is pressed toward the workpiece positioned on the mounting table, the blade holder is cut. The object moves in parallel along the ridge of the object, and the ridge is scraped off by the cutting blade held by the blade holder.
Chamfering of the work piece is performed.

According to the chamfering device using the chamfering cutting blade of the fourth aspect, the work is mounted on the mounting table,
By stopping the one side surface against the positioning piece and by stopping the other side surface following the one side surface against the positioning rod, it is possible to reliably position the workpiece for chamfering on the mounting table. . When the blade holder is pressed in the direction of the work piece in the state where the above-mentioned positioning of the work piece is performed, the blade holder moves parallel to the side surface of the work piece while being guided by the guide rod to The provided cutting blade scrapes off the ridge line portion of the work piece protruding outward from both the edge portion of the mounting table and the lower edge portion of the positioning rod.

In this way, the work piece is held on its two sides by the positioning piece and the positioning rod on the mounting table, and in this state the blade holder guided by the guide rod is moved toward the work piece. Since the cutting blade held by the blade holder is restricted from moving in a direction other than the moving direction, the blade holder is moved with the hand placed on the positioned workpiece. By the chamfering operation, the ridgeline part of the work piece is chamfered linearly and beautifully by the cutting blade without any unevenness.

According to the chamfering device using the chamfering cutting blade of the fifth aspect, since the blade holder is provided so as to be rotatable around the support shaft, the amount of rotation around the support shaft is adjusted. This makes it possible to change the amount of protrusion of each cutting edge. Therefore, it becomes possible to extremely easily set the protrusion amount of each cutting edge appropriately according to the material of the workpiece, and it is possible to easily prepare in advance a plurality of types of cutting blades with different protrusion amounts of the cutting edge. You don't have to.

In the chamfering device using the chamfering cutting blade according to the sixth aspect of the invention, since the blade holder is moved while being guided by the guide rod by operating the operating lever, the operating lever is operated. The blade holder can be easily moved by gripping and pressing it in the direction of the workpiece, and the operability of the blade holder is improved.

According to the chamfering device using the chamfering cutting blade of the seventh aspect, the guide rod is provided with a male screw, and the rod is provided between the support members so as to be rotatable about the axis. Since the blade holder is provided with a female screw that is screwed into the male screw of the guide rod, by rotating the guide rod, the blade holder screwed into the male screw formed on the rod will be Move along the guide rod.
When the guide rod is rotated by the transmission motor, the blade holder can be easily moved only by operating the switch.

[0026]

FIG. 1 is a partially cutaway perspective view showing an example of a chamfering device according to the present invention. 2 is a front view of the chamfering device of FIG. 1, FIG. 3 is a side view of the same portion with a cutout, and FIG. 4 is a plan view of the same portion with a cutout. In this embodiment, the chamfered product (workpiece) G is a rectangular parallelepiped metal block or synthetic resin block. In the case of metal, relatively soft aluminum or its alloy is preferably applied, but not limited thereto, and made of lead,
It is also applicable to copper, brass, etc.

As shown in the above figures, the chamfering device 1 is
A rectangular base 2, a mounting base 3 provided on the rear of the base 2 (obliquely upper left in FIG. 1), and a base 2 in front of the mounting base 3 (diagonally lower right in FIG. 1) The guide mechanism 4 includes a blade holder 5 that is moved by being guided by the guide mechanism 4, and a blade holder moving unit 6 that moves the blade holder 5.

The base 2 is formed of a thick steel plate, and plays a role of a heavy weight so that the chamfering device 1 does not easily move even if a chamfering operation is performed due to its weight. Rubber stoppers 21 made of rubber are attached to the four corners of the back surface of the base 2 so that the base 2 does not slip even when a horizontal force is applied to the base 2.

The mounting table 3 is composed of a pair of left and right side plates 31 provided upright on the base 2, and a top plate 32 screwed to the upper end surfaces of the side plates 31. This top plate 32
The front edge portion of is projected slightly forward from the side plate 31, and an inclined surface 33 is formed from this projected surface toward the lower rear. In the case of this embodiment, the angle of the inclined surface 33 with respect to the horizontal plane is set to 45 °.

At the front right end of the inclined surface 33 of the mounting table 3 shown in FIGS. 1 and 2, a rectangular parallelepiped positioning piece 34 extends rearward along the right side edge of the inclined surface 33. It is screwed on. When the positioning piece 34 is stopped, the rectangular parallelepiped chamfered article (workpiece) G placed on the inclined surface 33 is laterally positioned.

The guide mechanism 4 is provided with a pair of left and right support plates 41 which are erected parallel to each other on the base 2 in front of the mounting table 3.
And a pair of diagonally upper and lower guide rods 42 extending in the horizontal direction, which are provided between the support plates 41, and a positioning rod 43 provided at the top of the pair of support plates 41. In this embodiment, the positioning rod 43 and the positioning piece 34 constitute a positioning member.

The supporting plate 41 has an inclined front surface 41a inclined downward by 45 ° with respect to the horizontal plane at the upper front portion, and the horizontal end surface 41b at the top of the inclined surface 41a is formed on the inclined surface 33 of the top plate 32. On the other hand, the position is set so as to be located forward and diagonally upward. On the horizontal end surface 41b of the support plate 41, a positioning rod 43 for positioning the chamfered article G in the front-rear direction is inserted in parallel with the top plate 32 and fixed by screws.

Therefore, as shown in FIG. 3, between the rear end portion (left side in FIG. 3) of the positioning rod 43 and the front end portion (right side in FIG. 3) of the top plate 32, the top plate 32 is placed. A chamfered space S is formed in which the corner of the lower front portion of the chamfered article G, which has been laterally and longitudinally positioned by the positioning piece 34 and the positioning rod 43, is located.

In the present embodiment, the pair of guide rods 42 are round rods having male threads on both ends. These guide rods 42 correspond to the support plate 41.
The nuts 42a are fastened between the support plates 41 in a state in which both ends are penetrated and a nut 42a is screwed to a portion where a male screw protruding from the support plates 41 to the outside is screwed. The guide rod 42 is not limited to a round bar, and may have a triangular, quadrangular or polygonal cross section.

As shown in FIGS. 1 to 7 (particularly FIGS. 5 to 7), the surface of the blade holder 5 is 45 ° with respect to the horizontal plane.
Of the movable table 51 having a right-angled triangular shape in side view, which is the inclined surface 510, a guide member 52 fixed on the inclined surface 510 of the movable table 51, and guided in the guide member 52 to move in the front-rear direction. The blade holding member 53 and the cutting blade 8 fixed to the tip of the upper portion of the blade holding member 53.

A pair of upper and lower through holes 51a penetrating in the lateral direction are formed in the moving table 51. The pair of through holes 51a are fitted into the guide rod 42 through a slide bearing 51b, and slide. It can be moved laterally smoothly with the help of bearings 51b.

On the upper surface of the guide member 52, there is provided a dovetail-shaped guide groove 52a which opens upward and extends in the front-rear direction, and on the bottom surface of the blade holding member 53 above the guide groove 52a. A fitting portion 53a is formed so that the lower portion fitted into is widened toward the end. Therefore, with the fitting portion 53a fitted in the guide groove 52a, the blade holding member 53 is guided by the fitting portion 53a while being guided.
It is slidable in the front-back direction.

At the base end portion (right side in FIGS. 5 and 6) of the blade holding member 53, there is provided a cavity portion 53b having an open lower portion, and the cavity portion 53b has a front-back direction (see FIGS. 5 and 6). A rack 53c is formed on one of the inner walls extending in the left-right direction (6). An insertion hole 53d is formed in the ceiling of the hollow portion 53b, and the guide member 52 is also provided.
An insertion hole 52b is also formed in a portion corresponding to the insertion hole 53d. Further, in the portion of the moving table 51 corresponding to the insertion hole 52b, the support hole 5 having a slightly smaller diameter is provided.
1c is provided, and a screw hole 51d having a smaller diameter is screwed subsequently to the support hole 51c.

On the other hand, on the surface of the blade holding member 53 on the base end side, there is provided a moving amount adjusting lock means 7 for adjusting the moving amount of the blade holding member 53 and for locking the set moving position. The movement amount adjusting lock means 7 has a knob member 71 having a disk-shaped dial portion 71a, a center shaft 72 extending from the bottom surface of the knob member 71, and a small diameter member extending from the tip of the center shaft 72. The front shaft 73, the knob member 71, the center shaft 72, and a fastening screw 74 provided vertically through the front shaft 73, and a pinion 72a formed on the outer periphery of the center shaft 72.

Then, the center shaft 72 is fitted in the insertion hole 53d of the blade holding member 53 and the insertion hole 52b of the guide member 52, and the tip shaft 73 is fitted in the support hole 51c of the moving table 51 and is fastened. The screw 74 is screwed into the screw hole 51d of the moving table 51, and the blade holding member 53 is fixed to the moving table 51 via the guide member 52 with the head 74a of the fastening screw 74 pressing the knob member 71. There is.

Then, with the movement amount adjusting lock means 7 attached to the blade holder 5, the pinion 72a formed on the center shaft 72 of the knob member 71 is attached to the blade holding member 53.
The dimensions are set so as to mesh with a rack 53c formed on the inner wall of the hollow portion 53b. Therefore, the fastening screw 74
The blade holding member 53 is rotated forward and backward by rotating the knob member 71 forward and backward by rotating the knob member 71 so that the knob member 71 is rotatable about the axis, and the blade holding member 53 is moved forward and backward while being guided by the guide member 52 via the pinion 72a and the rack 53c. To do.

In the dial portion 71a of the knob member 71,
Since the scale is attached as shown in FIGS. 1 and 2,
The scale allows the amount of forward and backward movement of the blade holding member 53 to be confirmed. Then, when the amount of movement of the blade holding member 53 is determined, by tightening the fastening screw 74,
The relative position of the blade holding member 53 with respect to the moving table 51 is fixed.

A notch groove 5 for holding the cutting blade 8 is provided at the tip of the blade holding member 53 (left side in FIGS. 5 and 6).
3e is formed. The notch groove 53e is formed so as to surround the cutting blade 8 on three sides and the bottom surface, and has an opening on the upper side and the tip side. Therefore, with the cutting blade 8 mounted in the notch groove 53e, the upper surface portion and the cutting edge of the cutting blade 8 are exposed from the blade holding member 53.

Further, at the tip of the blade holding member 53, there is provided a vertically long flat plate-like metal fitting 54 corresponding to the notch groove 53e for pressing and holding the cutting blade 8. A through hole 54a is formed in the central portion of the holding metal fitting 54, and a screw hole 53f is screwed on the surface of the blade holding member 53 corresponding to the through hole 54a, so that the bolt 55 holds the holding metal fitting. The blade holding member 5 is inserted into the through hole 54a of the blade 54 and is screwed into the screw hole 53f of the blade holding member 53.
The tip of 3 presses the cutting blade 8 mounted in the notch groove 53e from above to fix it in the notch groove 53e.

Further, at the tip of the blade holding member 53, as shown in FIG.
As shown in FIG. 5, a screw hole 53g communicating from the side wall portion to the notch groove 53e is screwed, and a fixing screw 53h for preventing lateral deflection of the cutting blade 8 is screwed into the screw hole 53g. . Therefore, the cutting blade 8 mounted in the cutout groove 53e is securely fixed in the cutout groove 53e by tightening the bolt 55 and the fixing screw 53h.

FIG. 8 is a perspective view showing a state where the ridgeline portion of the chamfered product is scraped off by the cutting edge of the cutting blade,
FIG. 9 is a diagram showing the cutting blade of the first embodiment used in FIG. 9A is a side view and FIG. 9B is a plan view. As shown in these figures, the cutting blade 8 is
It is composed of a rectangular parallelepiped blade body (adhered portion) 81 and a blade tip portion 82 formed on the tip side of the blade body 81.
The cutting edge portion 82 is formed with four cutting edges including a first cutting edge 82a, a second cutting edge 82b, a third cutting edge 82c, and a fourth cutting edge 82d from the cutting direction side (right side in FIG. 9).

Then, with the cutting blade 8 attached to the blade holder 5, the cutting edge portion 82 has a chamfered space S formed in front (right side) of the top plate 32 of the mounting table 3 as shown in FIG.
, And the front lower edge of the chamfered article G positioned by the positioning piece 34 and the positioning rod 43 on the top plate 32 is interfered with. The length of the cutting edge portion 82 of the cutting blade 8 is set so as to gradually increase from the cutting direction side by the distance d, as shown in FIG.

Therefore, when the moving table 51 is moved to the left from the state shown in FIGS. 1 and 2, the first cutting edge 82a first scrapes off the lower end edge of the chamfered article G, as shown in FIG. The second cutting edge 82b further scrapes off the portion scraped by the first cutting edge 82a by a distance d, and the third cutting edge 82c and the fourth cutting edge 82d sequentially scrape deeply by the distance d, and the chamfered part G is edged with a predetermined distance. Chamfered portion G1 is formed.

The value of the distance d is the chamfered product G
It is variously changed according to the material of. That is, when the chamfered product G is made of a soft synthetic resin, there is no support even if the value of the distance d is increased, but when the chamfered product G is a metal product, the distance d is a very small value. Is set to.

The blade holder moving means 6 is shown in FIGS.
As shown in FIG. 2, a bracket 61 provided on the base 2 in front of the support plate 41 and a horizontal shaft 61
The rotating plate 62 is rotatably supported around a, the operating lever 63 is provided on the top of the rotating plate 62, and the handle 64 is provided on the top of the operating lever 63. ing.

A long hole 62a extending vertically is formed in the upper part of the rotating plate 62.
The action shaft 65 is fitted in a. This action axis 65
The front end of is fixed to a mounting projection 56 provided on the front side of the moving table 51. Therefore, the handle 64 is gripped and the operation lever 63 is moved to the horizontal shaft 61a of the bracket 61.
When it is rotated in the normal and reverse directions, the inner wall surface of the long hole 62a of the rotary plate 62 presses the working shaft 65, so that the moving table 51 is guided by the guide rod 42 and horizontally moves in the normal and reverse directions.

Since the chamfering device of the present invention is configured as described above, when chamfering the edge of the chamfered article G, first, as shown in FIGS. 61a is rotated counterclockwise around 61a to move the moving table 51 leftward, and in this state, the chamfered article G is placed on the top plate 32 of the mounting table 3 and the chamfered articles adjacent to each other are placed. The side surface of G is pressed against the positioning piece 34 and the positioning rod 43. Then, as shown by the chain double-dashed line in FIGS. 1 and 2, the chamfered product G on the top plate 32 is in a positioned state.

Then, when the chamfered article G is positioned on the top plate 32, the handle 64 is grasped and the operation lever 63 is rotated clockwise about the horizontal axis 61a. It is pressed to the right through the inner wall surface of the long hole 62a of the moving plate 62, the action shaft 65 and the mounting projection 56, and horizontally moves to the right while being guided by the guide rod 42.

By the horizontal movement of the moving table 51, the cutting blade 8 attached to the tip of the blade holding member 53 fixed to the inclined surface 510 of the moving table 51.
First, the first cutting edge 82a of the first abuts on the sharp edge of the chamfered article G located in the chamfering space S. In this state, the handle 64
As shown in FIG. 8, the tip end portion of the edge of the chamfered article G is first scraped off by increasing the force applied to the second cutting edge 82b, the third cutting edge 82c, and the fourth cutting edge 82d. The chamfered portion G1 is formed on one of the ridges of the chamfered article G when the moving table 51 reaches the right end portion of the guide rod 42, and the chamfered state is obtained. .

Then, the other ridge line portions of the chamfered article G are sequentially positioned in the chamfering space S, and the above operation is repeated to complete the chamfering operation of the twelve ridge line portions of the chamfered article G.

As described in detail above, the chamfering device 1 of the present invention moves the blade holder 5 in parallel along the guide rod 42 by one-touch operation of the blade holder moving means 6, and is attached to the blade holder 5 by this parallel movement. Since the chamfering is performed by cutting the ridgeline portion of the chamfered product G with the cutting blade 8, the rotary blade and the ridgeline portion of the chamfered product G are compared to the conventional rotary blade type chamfering device. No abnormal noise is generated due to contact, the scattering of shavings is also effectively suppressed, the working environment is improved, and secondary burr does not occur at all.Therefore, it is not necessary to further remove secondary burr after the chamfering operation. It is also effective in reducing the work cost.

Further, the cutting edge portion 82 provided at the tip of the cutting blade 8 is provided with a plurality of cutting edges, that is, a first cutting edge 82a, a second cutting edge 82b, a third cutting edge 82c and a fourth cutting edge 82d, which are cut. Since the protruding amount is set to increase gradually from the side, the cutting amount of each cutting edge is not so large, and therefore the chamfering operation of the chamfered product G can be easily performed by applying a light force to the handle 64. It also has the advantage of being able to do so.

Further, in the conventional rotary blade type chamfering device, when the chamfering speed is increased, the chamfered portion has wavy unevenness. Therefore, the chamfering operation must be performed slowly. Since the chamfering device is a planer, it is not necessary to slow down the chamfering speed unlike the one using a rotary blade, and it is possible to perform extremely rapid chamfering operation and improve the chamfering work efficiency. .

FIG. 10 shows a second embodiment of the cutting blade, (a) is a side view and (b) is a plan view. As shown in these figures, in the case of the cutting blade 8'of this example, the cutting blade 8'is provided at the tip of a blade body 81 'composed of a first blade edge 82a', a second blade edge 82b ', a third blade edge 82c' and a fourth blade edge 82d '. The blade edge portion 82 'thus formed has an inclination as shown in FIG. By forming such an inclination, the cutting effect of chamfering is improved.

FIG. 11 shows a third embodiment of the cutting blade, (a) is a side view and (b) is a plan view. As shown in these drawings, in the case of the cutting blade 8 ″ of this example, it is provided at the tip of the blade main body 81 ″ including the first cutting edge 82a ″, the second cutting edge 82b ″, the third cutting edge 82c ″, and the fourth cutting edge 82d ″. An arcuate blade 83, which is recessed in an arcuate shape as shown in (b), is formed in the center of the formed cutting edge portion 82 ″. Therefore, when chamfering is performed using this cutting blade 8 ″, it is chamfered. The cross section of the open part has an arc shape.

FIG. 12 is a partially cutaway plan view showing a state where a cutting blade of another example is mounted on the blade holding member. The cutting blade 80 includes a plurality of unit blades 84 having one cutting edge,
The blade edges are formed in alignment with each other so as to project from the notch groove 53e to the outside.

A pressing member 57 having a coil spring for pressing the bottom of each unit blade 84 mounted in the groove 53e toward the outside is provided at the inner portion of the notch groove 53e (downward in FIG. 12). And the blade holding member 5
A cover plate 58 for covering the plurality of unit blades 84 in the cutout groove 53e is screwed to the surface of the screw 3.

A notch groove 53e is formed on the surface of the covering plate 58.
Cover plate 5 for fixing each unit blade 84 mounted inside
A vertical bolt 58a penetrating 8 is screwed, and a lateral side of the blade holding member 53 is provided with a notch groove 53.
A horizontal bolt 58b, whose front end portion for tightening the unit blade 84 in e faces the notch groove 53e, is screwed.

Therefore, in order to fix the cutting blade 80 to the blade holding member 53, first, the vertical bolt 58a and the horizontal bolt 58b.
In the state where the blades are loosened, each unit blade 84 is inserted into the notch groove 53e against the pressing force of the pressing member 57, and the protrusion amount of each blade is set, and then the vertical bolt 58a and the horizontal bolt 58 are set.
It is sufficient to fasten b. By configuring the cutting blade 80 with the plurality of unit blades 84 in this manner, the amount of protrusion of each unit blade 84 can be arbitrarily set according to the type of the chamfered product G, which is very convenient.

FIG. 13 is a plan view showing another example of a blade holding member. As shown in this figure, the blade holding member 53 of this example
No. 0 is provided with a rotation holding portion 531 rotatably supported at the tip end portion so as to be rotatable around the first screw shaft 5x. This rotation holding part 5
31 is provided with a notch groove 53e, and this notch groove 53e
The cutting blade 8 is attached to the. Then, the cutting blade 8 mounted in the cutout groove 53e is fixed in the cutout groove 53e by fastening the bolt 55 so that the upper surface portion of the cutting blade 8 is pressed by the pressing metal fitting 54.

On the other hand, the first portion is provided on the right side of the rotation holding portion 531.
An arc hole 532 along an arc centered on the axis of the screw shaft 5x.
Has been drilled. In addition, the circular arc hole 5 of the blade holding member 530
A screw hole (not shown) is screwed in a portion corresponding to 32, and the second screw shaft 5y penetrates the arc hole 532 and is screwed. Then, the head of the second screw shaft 5y has an arc hole 5
It is dimensioned to rest on the edges of 32. Therefore, in the state where the first screw shaft 5x and the second screw shaft 5y are loosened, the rotation holding portion 531 moves to the first position within the range of the circular arc hole 532.
The screw shaft 5x is rotatable around the first screw shaft 5x.
And the rotation holding part 531 is in the locked state at the phase set by fastening the second screw shaft 5y.

Further, at the right end of the rotation holding portion 531,
A screw hole 533 penetrating inward from the wood mouth surface is screwed, and an adjusting screw 534 is screwed into the screw hole 533. The tip end of the adjusting screw 534 comes into contact with the end surface of the blade holding member 530. Therefore, the phase of the rotation holding portion 531 is set by adjusting the screwing depth of the adjusting screw 534.

Since the rotation holding portion 531 of the present embodiment is constructed as described above, the rotation holding portion 531 is loosened in the first screw shaft 5x and the second screw shaft 5y.
By rotating around the x-axis, it becomes possible to adjust the projecting amount of each blade edge portion 82 in a state in which the protruding amount is gradually increased from the tip end side one after another.

FIG. 14 is a partially cutaway perspective view showing another example of the chamfering device according to the present invention. In the chamfering device 10 of this example, one of the pair of guide rods 42 inserted between the support plates 41 is the screw shaft 91, and the moving table 51 of the blade holder 5 is attached to the screw shaft 91. Are screwed together, the electric motor 9 for rotating the screw shaft 91 around the axis is provided on one of the support plates 41, and the blade holder moving means 6 is not provided. The chamfering device 1 is different from the chamfering device 1 in the above example, but the other configurations are the same as the above.

Therefore, in the case of the chamfering device 10 of this example, the blade holder 5 can be horizontally moved along the guide rod 42 by rotationally driving the electric motor 9. Therefore, the chamfered article G can be chamfered by driving the electric motor 9 without operating the operation lever 63 as in the previous example.

In the example shown in FIG. 7, in order to automatically move the moving table 51, the moving table 51
A screw shaft 91 screwed into the screw shaft 91 is provided, and the screw shaft 91 is rotated around the axis by the electric motor 9. However, instead of providing such a screw shaft 91, a cylinder is provided to reciprocate the cylinder rod. It is also possible to move the moving table 51 with.

The moving table 5 is used instead of the cylinder.
Alternatively, a rack may be provided on the rack 1, a pinion that is rotationally driven by an electric motor may be meshed with the rack, the rack may be reciprocated by the rotation of the pinion, and the movable table 51 may be moved by the reciprocal movement.

[0073]

The cutting blade according to claim 1 of the present invention comprises an adhered portion for mounting on the blade holder, and a blade tip portion provided on the tip side of the adhered portion, and the blade tip portion advances the cutting. It is formed by a plurality of cutting edges protruding in series along the entire length in the direction, and the projection amount of each cutting edge is dimensioned so as to gradually increase from the most cutting edge in the traveling direction to the rear cutting edge. is there.

Therefore, if the blade holder is moved toward the work piece positioned on the mounting table, the ridge line portion of the work piece is slightly scraped off by the blade tip having the smallest protrusion amount at the beginning. Next, the slightly scraped part is further scraped by the cutting edge, and thereafter, the part scraped by the preceding cutting edge is scraped off successively by the rear cutting edge.

As described above, since the ridge line portion of the work is sequentially scraped off in multiple stages, it is possible to reduce the amount of cutting by one cutting edge, and the ridge line portion can be smoothly cut by a plurality of cutting edges. Is progressively cut, and a suitable amount of chamfering can be performed with a single movement of the blade holder.

According to the cutting blade of claim 2 of the present invention,
Since the protruding amount of the tip of each unit blade can be adjusted with a plurality of unit blades mounted in series on the blade holder,
By adjusting the amount of protrusion of the cutting edge, it is possible to easily set the plurality of cutting edges of the cutting blade so that the amount of protrusion gradually increases from the blade edge in the traveling direction of the blade holder. Further, the amount of protrusion of each cutting edge can be appropriately set according to the material of the workpiece, and it is not necessary to previously prepare a plurality of types of cutting blades having different amounts of protrusion of the cutting edge. Well convenient.

A chamfering device according to a third aspect of the present invention is a mounting table on which a workpiece is mounted, a positioning member for positioning the workpiece mounted on the mounting table, and a ridge line of the workpiece. A blade holder for holding the cutting blade according to claim 1 or 2 for scraping off a part, and a guide member for guiding the movement of the blade holder, and the workpiece placed on the mounting table is positioned. By moving the blade holder toward the work piece in this state, the ridge line portion of the work piece is scraped off by the cutting blade.

Therefore, if the blade holder is pressed toward the work piece positioned on the mounting table, the blade holder moves in parallel along the ridge line of the work piece and the cutting held by the blade holder is performed. The ridgeline portion is scraped off by the blade, and the workpiece is chamfered.

As described above, according to the chamfering device of the third aspect of the present invention, it is extremely easy for anyone to move the blade holder toward the work piece positioned on the mounting table. The chamfering operation of the work piece can be performed, and when the conventional chamfering jig with the rotary cutting blade of the motor is used, the chamfering jig is moved in parallel to the work piece by applying a uniform force. It is very difficult to chamfer,
As a result, the chamfered parts become uneven and the problems such as the appearance of the finished state are definitely solved, and the noise and vibration due to the rotational drive of the motor are eliminated, and the working environment is improved. It is also convenient from the aspect of doing.

According to the chamfering device of the fourth aspect of the present invention, the work piece is placed on the mounting table, one side surface thereof is stopped by the positioning piece, and the other side surface following the one side surface is positioned. By stopping the rod against the rod, it is possible to reliably position the workpiece for chamfering on the mounting table. Then, in the state where the above-mentioned positioning of the work piece is performed,
When the blade holder is pressed in the direction of the work piece, the blade holder moves parallel to the side surface of the work piece while being guided by the guide rod, and the cutting blade provided on the blade holder causes the edge of the mounting table and the positioning rod to move. The ridge line part of the work piece protruding outward from both the lower edge part and the lower edge part is scraped off.

As described above, the work piece is held on its two sides by the positioning piece and the positioning rod on the mounting table, and in this state, the blade holder guided by the guide rod is moved toward the work piece. Since the cutting blade held by the blade holder is restricted from moving in a direction other than the moving direction, the blade holder is moved with the hand placed on the positioned workpiece. By the chamfering operation, the ridgeline part of the work piece is chamfered linearly and beautifully by the cutting blade without any unevenness.

According to the chamfering device of the fifth aspect of the present invention, since the blade holder is provided so as to be rotatable around the support shaft, the protrusion of each blade tip is adjusted by adjusting the amount of rotation around the support shaft. It is possible to change the amount. Therefore, it becomes possible to extremely easily set the protrusion amount of each cutting edge appropriately according to the material of the workpiece, and it is possible to easily prepare in advance a plurality of types of cutting blades with different protrusion amounts of the cutting edge. You don't have to.

According to the chamfering device of the sixth aspect of the present invention, since the blade holder is moved while being guided by the guide rod by operating the operating lever, the operating lever is grasped and moved. By pressing the blade holder in the direction of the work, the blade holder can be easily moved, and the operability of the blade holder is improved.

According to the chamfering device of the seventh aspect of the present invention, the guide rod is provided with a male screw, the rod is provided between the supporting members so as to be rotatable about the axis, and the blade holder is guided. Since a female screw that is screwed into the male screw of the rod is screwed, by rotating the guide rod,
The blade holder screwed into the male screw formed on the rod moves along the guide rod. When the guide rod is rotated by the transmission motor, the blade holder can be easily moved only by operating the switch.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a chamfering device according to the present invention.

FIG. 2 is a front view of the chamfering device of FIG.

FIG. 3 is a partially cutaway side view of the chamfering device of FIG. 1.

4 is a partially cutaway plan view of the chamfering device of FIG. 1. FIG.

FIG. 5 is a cross-sectional view showing a main part of a blade holder.

6 is a view taken along the line AA of FIG.

FIG. 7 is a B line view of FIG. 6.

FIG. 8 is a perspective view showing a state in which a ridgeline portion of a workpiece is scraped off by a cutting edge.

9A and 9B are diagrams showing a first embodiment of a cutting blade, in which FIG. 9A is a side view and FIG. 9B is a plan view.

FIG. 10 is a view showing a second embodiment of the cutting blade, (a)
Is a side view and (b) is a plan view.

FIG. 11 is a view showing a third embodiment of the cutting blade, (a)
Is a side view and (b) is a plan view.

FIG. 12 is a partially cutaway plan view showing a state in which a cutting blade of another example is attached to a blade holding member.

FIG. 13 is a plan view showing a blade holding member of another example.

FIG. 14 is a partially cutaway perspective view showing another example of a chamfering device according to the present invention.

[Explanation of symbols]

 1, 10 Chamfering device 2 Base plate 21 Non-slip 3 Placement table 31 Side plate 32 Top plate 33 Sloping surface 34 Positioning piece 4 Guide mechanism 41 Support plate 41a Sloping surface 41b Horizontal end surface 42 Guide rod 42a Nut 43 Positioning rod 5 Blade holder 51 Moving table 510 Inclined surface 51a Through hole 51b Slide bearing 51c Support hole 51d Screw hole 52 Guide member 52a Guide groove 53 Blade holding member 53a Fitting part 53b Cavity part 53c Rack 53d Insert hole 53e Notch groove 53f Screw hole 54 Holding metal fitting 54a Through hole 55 Bolt 56 Mounting Protrusion 6 Blade Holder Moving Means 61 Bracket 61a Horizontal Axis 62 Rotating Plate 62a Long Hole 63 Operating Lever 64 Grip 65 Working Axis 7 Moving Amount Adjusting Lock Means 71 Knob Member 72 Middle Axis 73 Tip Axis 74 Fastening Screw 8 Cutting blade 81 Blade body (adhered portion) 82 Blade edge 82a First blade edge 82b Second blade edge 82c Third blade edge 82d Fourth blade edge 9 Electric motor 91 Screw shaft G Chamfered product (workpiece)

Claims (7)

[Claims] 1. A blade holder for mounting on a predetermined blade holder, and a blade tip portion provided on a tip side of the blade holder, the blade tip portion protruding in series along the entire length in the cutting direction. A cutting blade for chamfering, which is formed by a plurality of cutting edges, and is dimensioned such that the amount of protrusion of each cutting edge is gradually increased from the most cutting edge in the traveling direction toward the rear cutting edge. 2. A unit blade is formed by an adherend to be attached to a predetermined blade holder and a blade tip provided on the tip side of the adherend, and a plurality of unit blades are attached to the blade holder in series. A cutting blade for chamfering, characterized in that the amount of protrusion of the tip of each unit blade is adjustable in this state. 3. A chamfering device for scraping off a ridgeline part of a work piece to eliminate a sharpened state, wherein a mounting table for mounting the work piece and positioning of the work piece mounted on the mounting table. It comprises a positioning member for carrying out, a blade holder for holding the cutting blade according to claim 1 or 2 for scraping off a ridge line portion of a work piece, and a guide member for guiding the movement of the blade holder, which is mounted on the mounting table. It is configured such that the ridge line portion of the work piece is scraped off by the cutting blade by moving the blade holder toward the work piece while the placed work piece is positioned. Chamfering device that uses a cutting edge for chamfering. 4. A chamfering device for removing a sharpened state by scraping off a ridge line part of a work, which is provided with a mounting table for mounting the work on a base, and which corresponds to the front of the mounting table. A pair of left and right support plates are provided upright, and a guide rod is provided between the pair of support plates in parallel with the front edge of the mounting table, and reciprocates between the pair of support plates while being guided by the guide rod. A blade holder is provided, and a positioning rod is provided on the top of the pair of support plates to stop one side surface of the work piece mounted on the mounting table. The positioning rod is positioned so that the ridgeline of the lower part of the work piece projects to the outside from both the edge of the mounting table and the lower edge of the positioning rod, and the positioning rod is located on one side of the mounting table. A positioning piece is provided at a right angle to the blade holder The cutting blade according to claim 1 or 2, wherein the cutting edge is cut off from the ridge line portion of the work piece protruding outward from both the edge portion of the mounting table and the lower edge portion of the positioning rod. Chamfering device that uses a cutting edge for chamfering. 5. The blade holder is rotatably provided around a support shaft, and the protrusion amount of each blade is adjustable by adjusting the amount of rotation around the support shaft. A chamfering device using the cutting edge for chamfering according to claim 3. 6. The blade holder is provided with an operating lever, and the blade holder is configured to move while being guided by a guide rod by operating the operating lever. A chamfering device using the cutting edge for chamfering described. 7. A male screw is screwed on the guide rod, the rod is rotatably provided between supporting members around an axis, and the blade holder is screwed on the male screw of the guide rod. A chamfering device using a cutting blade for chamfering according to claim 4 or 5, wherein a matching female screw is screwed.