JPH07100804A - Rotary blade apparatus - Google Patents

Abstract

PURPOSE:To provide a rotary blade apparatus capable of simply correctly controlling blade ejection and also positively fixing blade objects. CONSTITUTION:The rotary blade apparatus A is such that blade objects 3 each having an ejected blade tip are secured in a recessed groove 2 provided on the peripheral part of a base metal 1, and a backing seat 4 is plated on the side surface of the blade objects 3, wherein a receiver 10 for bearing the blade object 3 is provided on the backing seat 4, and engaging means is mounted on the receiver 10 and blade object 3 for preventing projection of the blade object 3, and a control screw lever 26 to be screwed in a control screw hole 27 of the backing seat 4 and for sifting the backing seat 4 is provided, which is also placed into screwed in a screw hole 5 of the base metal 1 along with a fixed screw body 6 having a spherical press member 24 fastened on the tip end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary blade device used in the wood processing or metal processing industry.

[0002]

2. Description of the Related Art Conventionally, rotary blades used in the wood processing industry and the like are known as shown in FIG.

The rotary blade 40 is a groove formed in the blade barrel 41.
In the 42, the cutting blade 43 and the presser foot 44 are stacked and accommodated,
In FIG. 8 (a), the screw portion 47 of the presser bolt 46, whose head 45 is in contact with one side wall of the concave groove 42, is screwed into the presser bar 44. By operating and tightening the head portion 45, the cutting blade 43 is pressed against the other side wall of the groove 42 by the presser foot 44 and is firmly attached.

Further, in the structure shown in FIG. 8 (b), a press bolt 49 whose inner end portion abuts on the bottom of the groove 42 is screwed into a screw hole 48 extending outside and inside the presser foot 44. Therefore, by tightening the presser bolt 49, the cutting blade 43 is pressed against the other side wall of the concave groove 42 by the wedge action due to the rise of the presser bar 44, and is firmly attached.

However, in any of the above-mentioned configurations, the operation of the presser bolts 46, 49 screwed into the presser foot 44 is to press the cutting blade 43 against one side wall of the concave groove 42 to fix it. The cutting blade 43, which is accommodated with the lower end in contact with the bottom of the concave groove 43, has a constant protrusion of the cutting blade 43 protruding from the tool copper 41, and has a variation in the width dimension of the cutting blade 43 and a concave shape. When variations in the machining accuracy of the groove 42 occur, this variation affects the protrusion of the blade, and it is not possible to make uniform adjustment of the protrusion of the cutting blades 43 attached to the blade copper 41. .

In addition, when adjusting the protrusion of each of these blades, the cutting blade 43 is held in and out by hand, so in the case of a thin and small cutting blade 43, it is difficult to perform fine work,
Accurate adjustment is difficult, and high-precision processing of the product cannot be expected, and quality may deteriorate. There were various problems such as.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, in which a blade object having a blade tip protruding from a concave groove provided in the peripheral surface of a base metal is attached to the blade. In a rotary knife device with a back seat on the side surface of the body, a receiving portion for supporting a blade object is provided on the back seat, and a member for preventing the blade object from protruding from the receiving portion and the blade object. And a fixing screw body in which a spherical pressing member is attached to the tip of the screw hole of the base metal while providing a stop means for screwing the adjusting screw hole of the back seat to move the back seat. An object of the present invention is to provide a rotary blade device capable of easily and accurately adjusting a blade by screwing and securely fixing a blade object.

[0008]

Means for Solving the Problems The means of the present invention for achieving the above-mentioned object is to provide a cylindrical base metal, a concave groove provided on a peripheral surface portion of the base metal, and a side wall of the concave groove. Rotation consisting of a blade object whose back side is brought into contact with the blade tip protruding from the peripheral surface of the base metal, and a backing of the blade object which is accommodated in the concave groove and attached to the side surface of the blade object. In the blade device,
The back seat is a receiving portion that abuts against the front surface side of the blade object to support the blade object, locking means that is provided on the receiving portion and the blade object to prevent the blade object from protruding, and the outside and the inside. An adjusting screw hole penetrating through and an adjusting screw rod that is screwed into the adjusting screw hole and has an inner end portion abutting the bottom portion of the concave groove, and the other side wall of the concave groove in the base metal. A screw hole penetrating the peripheral surface of the base metal, and a fixing screw body screwed into the screw hole and having a spherical pressing member for screwing the screw hole into contact with the back seat surface to fix the blade object. It is in the configuration of the provided rotary blade device.

[0009]

The present invention configured as described above has the following operations.

The back seat is housed in the recessed groove of the base metal, the blade object is inserted between one side wall of the recessed groove and the pressing surface side of the back seat, and then the back seat and the blade object are engaged by the locking means. Together, screw the fixing screw into the screw hole formed in the base metal, and bring the pressing member at the tip of the screw into contact with the receiving surface of the backing, and temporarily fix the backing, that is, the blade object. Keep it.

The blade object may be attached to the receiving portion of the back seat and then inserted into the concave groove of the blade copper.

In this state, when the adjusting screw of the back seat is operated to move the back seat up and down, the blade object supported by the back seat also moves together. When the fixing screw is screwed in and the backing is pressed against one side wall of the concave groove, it is fixed together with the blade object.

Further, at this time, since the pressing member of the fixing screw body is formed in a spherical shape, the pressing force applied to the receiving surface of the back seat is applied vertically to the receiving surface of the back seat, so that the concave groove is formed. The entire side surface of the blade object uniformly abuts on one side wall surface of the
A uniform frictional force is obtained on the blade object, and it is firmly fixed.

Further, since the receiving portion and the blade object are provided with the locking means, the blade object pops out of the base metal due to the centrifugal force even when the base metal rotates at a high speed, and nearby equipment and workers. Do not harm

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the rotary cutting device according to the present invention will be described below with reference to the drawings.

1, FIG. 3 and FIG. 6, A is a rotary cutter device used for plane cutting of fittings in the wood processing industry, etc., and is a base metal 1, a concave groove 2, a blade object 3,
It is basically configured by the backing plate 4, the screw hole 5, and the fixing screw body 6.

In the first embodiment shown in FIGS. 1 and 3, the base metal 1 is made of steel and is formed into a cylindrical shape having a predetermined thickness. A mounting hole 7 for mounting to (not shown) is formed.

The above-mentioned recessed grooves 2 are provided in a plurality of positions, for example, six positions, on the peripheral surface of the base metal 1 over the entire length of the base metal 1 in the width direction.

The blade body 3 is formed of cemented carbide, high-speed steel or the like so as to substantially match the body width of the base metal 1, and is substantially perpendicular to the side surface of the base metal 1 in the concave groove 2 described above. Each of the concave grooves 2 is brought into contact with the one side wall 8 of the concave groove 2 at the back surface side thereof, and the cutting edge 9 is formed on the peripheral surface portion of the base metal 1, that is,
It is projected from the body and is supported by a backing seat 4 described later.

If the blade object 3 is formed with symmetrical cutting edges 9 and 9 on its upper and lower sides, one of the cutting edges 9 is formed.
If the blade is worn or damaged, it can be reused by replacing the upper and lower positions, which is economical. Also, as shown in Fig. 5 (d), the cutting edges 9 and 9 can be formed in opposite directions. is there.

The backing seat 4 is detachably accommodated in each concave groove 2, the front side of the blade object 3 is brought into contact with a vertical surface of the receiving portion 10 and the entire surface thereof is put together, and the lower surface thereof is received. Locking step
By making it detachably supported on 11, it is possible to receive a cutting resistance that is applied to the base metal 1 toward the inside, and press the blade object 3 against one side wall 8 of the concave groove 2 to firmly support it. The upper surface thereof is formed in an arc shape and a flank 12 for discharging cutting chips is provided.

When the blade object 3 is attached, it is supported by the receiving portion 10 as described above, and the receiving portion 10 of the backing plate 4 is attached.
The locking means 13 provided on the blade body 3 and the blade body 3 prevent the blade body 3 from protruding in the circumferential direction.

As shown in FIGS. 1, 3 and 5 (a) and 5 (d), the structure is such that the receiving groove 14 formed on the front surface side of the blade object 3 is formed in the receiving portion of the back seat 4. Engagement with a protrusion 15 projecting from a vertical surface of 10 prevents the protrusion.

As another example, as shown in FIG. 5 (b), a protrusion 16 protruding from the surface of the blade object 3 is carved on the vertical surface of the receiving portion 10 of the backing plate 4. It engages with the groove 17, and further, as shown in FIG.
The retaining pin 20 is inserted into the receiving holes 18 and 19 bored in the vertical surface of the receiving portion 10 in.

In the base metal 1, the above-mentioned screw holes 5 are made to penetrate through the other side wall 21 of the concave groove 2 and the peripheral surface portion of the base metal 1 at two positions, and the fixing screw bodies 6 and 6 are respectively screwed into the screw holes 5. It is matched.

This fixing screw body 6 is a receiving surface of the backing plate 4.
The blade object 3 is fixed by abutting against the blade 22, and a male screw 23 that can be screwed into the screw hole 5 of the base metal 1 is provided, and a steel spherical pressing member 24 is attached to the inner tip of the male screw 23. The outer end is provided with a locking portion 25 on which a tightening tool is hooked.

The screw hole 5 is formed so as to be inclined toward the centripetal direction in the tangential direction of the base metal 1.

The back seat 4 is provided with adjusting screw holes 26 penetrating the outside and the inside thereof at a plurality of positions in the radial direction, for example, at two positions. The adjusting screw 27 is screwed.

The adjusting screw rod 27 has a concave groove 2 at its inner end.
The bottom portion of the back seat 4 is brought into contact with the bottom of the back seat 4 and the outer end of the back seat 4 is provided with a locking portion 28 to which a tightening tool is applied. The blade object 3 supported by the receiving portion 10 appears and disappears with respect to the outer surface of the blade copper 1, and the protrusion of the blade is arbitrarily adjusted.

When the adjusting screw 27 is loosened, the back seat 4
The back seat 4 is lowered by its own weight.

Therefore, in the rotary blade device A constructed as described above, in the state where the fixing screw body 6 is loosened,
The back seat 4 is housed in the recessed groove 2 of the base metal 1, and the blade object 3 is inserted between one side wall of the recessed groove 2 and the vertical surface of the receiving portion 10 of the back seat 4.

When the locking means 13 as shown in FIGS. 1, 3 and 5 (a) is used, the receiving groove 1 of the blade object 3 is engaged with the protrusion 15 of the back seat 4 and Fixing screw bodies 6 and 6 are respectively screwed into the two screw holes 5 and 5 formed in the gold 1, and the pressing member 24 at the tip end thereof is brought into contact with the receiving surface 22 of the backing seat 4, and By pressing 4 toward the side wall of the concave groove 2, the blade object 3 is temporarily fixed to the base metal 1 at a predetermined height.

Next, two adjusting screw holes 2 provided in the back seat 4
When the adjusting levers 27, 27 screwed to 2, 2 are operated to raise or lower the back seat 4, the blade object 3 supported by the back seat 4 is also moved. Adjustment rod 2
By operating 7, 27 as appropriate, the desired blade extension can be adjusted.

Then, the two fixing screws 6, 6 are further screwed in, and the backing plate 4 is further pressed against one side wall of the concave groove 2 via the pressing members 24, 24. It is sandwiched between 1 and the backing plate 4 and securely fixed.

Further, at this time, since the pressing member 24 is in point contact with the receiving surface 22 of the backing plate 4 or in slight surface contact,
The rotational force of the fixing screw body 6 is not transmitted to the back seat 4, so that the back seat 4 does not move in the width direction of the base metal 1.

The pressing force applied to the receiving surface 22 of the back seat 4 is because the pressing member 24 of the fixing screw body 6 is formed in a spherical shape.
Since it hangs in the direction perpendicular to the receiving surface 22 of the backing plate 4, the entire side surface of the blade object 3 uniformly abuts the one side wall 8 surface of the concave groove 2 via the pressing surface 11 thereof, and the blade object 3 On the other hand, a uniform frictional force is obtained by the surface of the side wall 8 of the concave groove 2 and the pressing surface 11 of the backing plate 4, and a firm fixing is achieved.

At this time, the pressing force applied to the receiving surface 22 of the back seat 4 is against the receiving surface 22 of the back seat 4 because the pressing members 24, 24 of the fixing screw bodies 6, 6 are formed in a spherical shape. Vertical direction, that is, parallel to the one side wall of the concave groove 2, the entire rear surface of the blade object 3 uniformly abuts the one side wall surface of the concave groove 2, and the blade object 3 receives uniform friction. A force is obtained and a firm bond is made.

Moreover, since the receiving portion 10 of the concave groove 2 and the blade object 3 are provided with the engaging means 13 which engage with each other,
Even if the base metal 1 rotates at a high speed for cutting, the centrifugal force prevents the blade object 3 from protruding from the base metal 1.

Further, since the screw hole 5 formed in the base metal 1 is formed in an inclined shape toward the centripetal direction of the base metal 1, the backing seat 4 is likely to pop out by the centrifugal force generated by the rotation of the base metal 1. The pressing force of the fixing screw 6 is suppressed by the pressing member 22 causing a wedge action.

A rotary blade device A shown in FIG. 6 shows a second embodiment, and the basic constitution is the same as the above-mentioned embodiment, but the blade object 3 is inserted into the concave groove 2 on the side surface of the base metal 1. In contrast to the above example, in which the cutting resistance is applied to the material all at once at the same time, the cutting object is provided with a rake angle. Since the cutting edge cuts into the material at a point, the cutting resistance is greatly reduced.

However, when mounting the blade object 3 provided with a rake angle, the blade object 3 is formed so as to be inclined downward as it extends toward the rear side so that the entire surface of the blade edge is uniformly cut into the material. It is necessary, and for that purpose, the concave groove 2 provided in the base metal 1 is processed as shown in FIG.

However, it is very difficult to cut the concave groove 2 and the backing plate 4, and it is difficult to finish with high precision.
By adopting the configuration of the embodiment of the present invention in this rotary blade device A, the blade edge can be easily adjusted and the above-mentioned precise finishing is not required.

Since the blade body 3 is attached with a rake angle, the blade body 3 may be thrust from the blade body 9 in a direction substantially orthogonal to the cutting edge 9 of the blade body 3 and come out of the base metal 1. It is preferable that the pressing plate 30 is fixed to the side of 1 and the fixing means 31 is provided on the base metal 1 and the back seat 4. For example, a configuration such as engagement between the receiving groove and the projection is adopted.

[0044]

According to the present invention constructed as described above, since the back seat can be moved up and down by the operation of the adjusting screw, the blade of the blade object supported by the back seat can be surely ejected. It can be adjusted appropriately.

Since the blade object is firmly attached to the concave groove, the blade object does not move during cutting, and a stable and highly accurate work can be performed on the object to be cut, and the table rotates at high speed. The blade body does not pop out from the gold due to its centrifugal force, and damages nearby articles or hits a worker without causing a serious accident.

Further, since the rotation of the fixing screw is transmitted to the backing and the blade object via the spherical pressing member, the blade object does not shift in the width direction of the base metal. It has unique effects such as.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a rotary blade device according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged front view of a part of FIG.

FIG. 4 is a perspective view showing a back seat in FIG.

5A and 5B are explanatory views showing respective examples of the blade object locking means in FIG.

6 is a plan view showing another rotary blade device in FIG. 1. FIG.

FIG. 7 is a front view of a main portion showing a concave groove in FIG.

FIG. 8 is a front view of a main part showing each example of a mounting state of a conventional blade.

[Explanation of symbols]

 A rotary knife device 1 base metal 2 concave groove 3 blade object 4 backing seat 5 screw hole 6 fixing screw body 9 cutting edge 10 receiving part 13 locking means 24 holding member 26 adjusting screw hole 27 adjusting screw rod

Claims (1)

[Claims] 1. A cylindrical base metal, a concave groove provided in a peripheral surface portion of the base metal, and a back side surface of the concave groove abutted against one side wall of the concave groove so that a cutting edge projects from the peripheral surface portion of the base metal. With the blade object
In a rotary knife device consisting of a backing of a blade object accommodated in the concave groove and fitted to the side surface of the blade object, the backing is in contact with the front surface side of the blade object to remove the blade object. A receiving part to be supported, a locking means provided on the receiving part and the blade object to prevent the blade object from popping out, an adjusting screw hole penetrating the outside and the inside, and a screw on the adjusting screw hole. And a screw hole having an inner end portion abutting against the bottom of the concave groove, the screw hole penetrating the other side wall of the concave groove of the base metal and the peripheral surface portion of the base metal, and this screw hole. A rotary blade device, comprising a fixing screw body, which is screwed and has a spherical pressing member that is fixed to a blade object by abutting against the back seat surface.