JPH0531619A - Spring tool and manufacture thereof - Google Patents

Abstract

PURPOSE:To shorten the grinding time and improve the chip removal performance by improving the technology for preliminarily forming a specified concave surface at the front face of the cutting part of a spring tool used for a planing machine, shaping machine, etc., and performing the improvement of the shape. CONSTITUTION:In the cutting part 40 of a tool bit of a tool body 1, the front face of the cutting part is recessed (curved) to obtain a radius of curvature R having at least a specified rake angle by suitable means (wire cut, forging forming, press forming), and the cutting part 40 is stuck to (brazed on) the tool bit-rest 3' of the tool body 1 to form a spring tool.

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a hail bite used in a planing machine, a shaper, etc., and to improving the shape of the bite. [Prior art and problems] Iron work on planing and shaping machines,
The sword bite used for planing aluminum and stainless work can be relatively easily polished and re-polished by anyone. However, since the hail bite changes the sharpness due to the rake angle of the blade portion and polishing, skill is required for polishing. Therefore, it is no exaggeration to say that if the hail bite can be completely polished, it will be a skilled worker who has mastered 50% or more of the planing work. Therefore, if a beginner or a part-time worker can easily grind the hail bite, it can contribute to the lack of manpower and the work efficiency of this work. An example of the structure and use of a conventional hail bite is shown in FIG. The cutting tool body 1 is composed of a shank portion 2 and a cutting tool base 3 and a blade portion (high-speed portion) 4 brazed to the shank portion 2, and a concave curved surface having a radius of curvature R, which is a rake angle, is formed on the front surface of the blade portion (high-speed portion) 4. It is formed by a skilled worker by hand. As for the processing of this concave curved surface, since skilled workers are modeling with a grinder due to experience and perception, there is a difference in the shape of the cutting edge due to the grinder work, the blade edge is blunted and polishing time is also considerably taken. There is. Further, when the planing operation is performed with the above-mentioned hail tool, the radius of curvature R of the blade portion 4 is uniform over the entire width as shown in FIG. There is a problem in the excluding property and the cutting property. [Problems to be Solved by the Invention] An object and an object of the present invention are to provide a conventional method for polishing a hail bite, a novel tool for manufacturing a bite that solves the problems caused by the shape of the hail bite, and a bite. .. [Means for Solving the Problems] The method for manufacturing a cutting tool according to the present invention is as follows. That is, the blade part of the cutting tool is a hail bite in which the front surface of the cutting tool is recessed (in a bay) by a suitable means so as to have a curvature radius of at least a predetermined rake angle, and the blade part is attached to the cutting tool table, and a manufacturing method thereof. It is a thing. Also,
This is a hail bite in which only the bite base or blade part where the blade part is attached to the shank part of the bite body is inclined in either the left or right direction with respect to the planing direction of the bite. Further, it is a hail bite in which the front surface radius of curvature, which is the rake angle of the blade attached to the bite base of the cutting tool body, is increased or decreased as it moves to both edges of the blade. [Operation] Since the blade part of the hail bite involved in the above manufacturing has a front surface radius of curvature with a predetermined rake angle, the operator finishes the polishing work only by polishing the tip of the blade part, It becomes a wall hail bite. Further, since the cutting chips flow laterally with respect to the machining direction and are eliminated by increasing or decreasing the radius of curvature of the front surface of the hail bite by both edges or tilting, the planing process is performed more smoothly. [Examples] The manufacturing technique of the hail bite and the shape of the hail bite of the present invention will be described below with reference to the examples of the drawings.
1 is a perspective view of a hail bite showing two manufacturing techniques, FIG. 2 is a perspective view showing the operation of a conventional hail bite, FIG. 3 is a perspective view showing a third manufacturing technique of the bale bite of the present invention, and FIG. 3 is a flow chart of FIG. 3, FIG. 5 is a perspective view showing a second embodiment of the present invention, FIG.
8 is a perspective view showing a third embodiment of the invention and a working plane section, respectively. In FIG. 1, the blade portion 4 adhered (brazed) to the tool holder 3 of the tool body 1 has a front surface recessed (in a bay) with a radius of curvature R that provides a predetermined rake angle.
Shows two manufacturing methods of the hail bite attached to the bite table 3. The wire cutting method (i) is a method of recessing (growing) a predetermined radius of curvature R on the front surface of the blade portion 4, and the radius of curvature R is set by wire cutting discharge.
Disconnect with. Further, in the forging method (ii), the blade portion 4 and the bite base 3 are formed by forging. In particular, the blade 4
A concave surface having a radius of curvature R is formed by a forging method on the front surface of (1). The blade portion 4 after forging is attached (brazed) to the bite base 3. 3 and 4 show a technique for manufacturing the hail bite of the present invention by a press forming method, in which the blade part 40 and the bite base 3'of the bite body 1 are "press-formed" so that the radius of curvature R and the receiving surface R'are rake angles. (A) and (b). Then, after "welding (brazing)" (c) between the press-molded blade portion (high-speed portion) 40 and the bite base 3 ', "polishing" (d) of the blade portion (high-speed portion) 40 is performed. , "Finished product" (e). FIG. 5 shows a practical example of the shape of the hail bite of the present invention, in which the bite base 3 to which the blade part (high speed part) 4 is attached to the shank part 2 of the bite main body is subjected to planing (grooving) of the bite. It is configured to be tilted about 5 ° in either the left or right direction with respect to the direction F. Since the blade 4 is also tilted at the same angle due to the tilting of the bite table 3, the planing (grooving) of the work W is performed in the machining direction F.
When it is executed, the cutting chips C are discharged to the side of the blade portion 4 which is inclined while receiving the removing action as shown by the arrow. Therefore, the action of removing the chips C in the planing operation and the cutting performance are increased. 7 and 8 show another embodiment relating to the shape of the hail bite of the present invention, in which the front surface radius of curvature of the blade part 3 attached to the bite base 3 of the cutting tool body 1 is changed to R1 as it moves to both edges of the blade part. To increase or decrease to R2. Since the above-mentioned radii of curvature R1 and R2 have a relation of R1> R2, when the planing is performed in the arrow direction F on the work W, the chips C are subjected to the removing action from the R1 side to the R2 side as shown by the arrow. Discharge. Therefore, the action of removing the chips C in the planing operation and the cutting performance are improved. Needless to say, the present invention is not limited to the above-described embodiments, and design changes can be made within the scope of the invention. For example, the manufacturing method of the blade portion of the hail bite is not limited to the above embodiment. Furthermore, the inclined relationship between the blade portion and the shank portion, and the relationship between the blade portions having a radius of curvature are not limited to those in the above embodiment. [Effect] According to the present invention, the front surface of the blade part of the cutting tool is recessed by an appropriate means to a radius of curvature that provides a predetermined rake angle, and this blade part is a hail bite attached to the cutting tool table. The polishing work is completed by performing only the polishing due to the wear of the tip of the blade, and a complete hail bite is obtained. Therefore, even an unskilled worker can carry out planing work using a hail bite with high efficiency. Furthermore, since the blade portion is inclined in either the left or right direction with respect to the planing direction of the cutting tool, or the front surface radius of curvature that is the rake angle of the blade portion is increased or decreased as it moves to both edges of the blade portion, In the planing work and the shaping work, the chip is smoothly removed laterally with respect to the cutting direction of the cutting tool, and the planing and shaping can be performed with high accuracy and high efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1] A perspective view of a hail bite showing two manufacturing methods. FIG. 2 is a perspective view showing the operation of a conventional hail bite. FIG. 3 is a perspective view showing a third manufacturing method of the hail bite of the present invention. FIG. 4 is a flow chart of FIG. FIG. 5 is a perspective view showing a second invention of the present invention. FIG. 6 is a plan sectional view showing the operation of FIG. [FIG. 7] A perspective view and an action plane sectional view showing a third invention of the present invention. FIG. 8 is a perspective view and a plan sectional view showing a modified example of the third invention of the present invention. [Explanation of Codes] 1 ... Tool body 2 ... Shank portion 3, 3 '... Tool base 4, 40 ... Blade portion (high speed portion) R, R1, R2 ... Front curvature radius C of blade portion ... Chip W ... Workpiece K , F… Machining direction θ… Tilt angle

Claims (1)

Claims [Claim 1] The cutting edge of the cutting tool is formed such that the front surface of the cutting section is appropriately recessed (gulfed) with a radius of curvature that provides at least a predetermined rake angle, and the cutting section is attached to the cutting tool table. Hale bite manufacturing method. [Claim 2] A hail bite in which the blade portion of the cutting tool body has a front surface recessed (in a bay) with a radius of curvature having a predetermined rake angle, and the blade portion is attached to a cutting tool table. [Claim 3] Only the bide table or the blade portion to which the blade portion (high speed portion) is attached to the shank portion of the cutting tool body,
A hail bite characterized by being tilted either left or right with respect to the planing direction of the bite. [Claim 4] A hail bite characterized in that the radius of curvature of the front surface, which is the rake angle of the blade attached to the bite base of the cutting tool body, is increased or decreased as it moves to both edges of the blade.