JPS62259704A - Cylindrical shank cutting tool fitting jig - Google Patents

Abstract

PURPOSE:To make fixing certain and firm and to make attaching and detaching easy by fixing a cylindrical shank cutting tool to a fitting jig at three(3) points, i.e., a groove bottom section, a groove side wall section, and the flush head of a bolt. CONSTITUTION:A square groove section 1' and a tapped hole 1c are formed on a cylindrical shank cutting tool fitting jig 1. A cutting edge section 2a is attached to the shank section 2b of a cylindrical shank cutting tool. Another end section of this shank section 2b is inserted into the square groove section 1' and a flush bolt 3 is screwed into the tapped hole 1c. The shank section 2b is firmly fixed at three(3) points, i.e., the groove side wall section 1b of the square groove section1', a groove bottom section 1a, and the bolt flush head section 3a of the flush bolt 3. The shank section 2b can be attached and detached readily by fastening or loosing the bolt 3.

Description

[Detailed description of the invention] Great industrial use! 1IF) The present invention is aimed at improving a round shank tool mounting jig that securely takes the round shank tools 1 to 1 in the jig.

(&E technology) Traditionally, hole cutting tools cut in a comfortable space, so there were no protrusions on the blade that would prevent the cutting edge from flowing out.
A shank bit with a round cross section with less unevenness is used in the shank part. Throw-away holders such as screw-on type and bottle-lock type are used on land as jigs (for example, holders) for such boring cutting, and cemented carbide or the like is used as the material.

To fix the cutting tool to a jig, such as a holder, move the sleeve through the drawper and place the St? on the tool rest by opening and closing the St? (A collet method for fixing the dimensions, a method in which a bottom six hole for fixing the tool bit is drilled in the holder, and a bolt is pressed into the hole at right angles to fix it, or a bridge-type presser such as a wedge-on method or a clamp-on method) A fixing method is used in which the metal fittings are placed on the metal fittings and then tightened with bolts.

(Problems to be Solved by the Invention) However, with the above-mentioned various fixing methods, it is difficult to securely, firmly, and easily attach the round shank bi-I to the jig.

In addition, with the method of pressing and fixing the cutting tool to the holder using bridge-shaped metal fittings such as wedges and clamps, the pressing and screwing operations of bolts are complicated and can cause problems. e- and cannot be fixed firmly and securely.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned problems, and is a practical round shank tool which allows a round shank tool to be securely and firmly attached, and which can be easily and easily replaced. This provides a jig for taking a cutting tool fI'.

That is, the present invention provides a rectangular arm of a required depth on one side of the jig for inserting a round shank, and a screw hole for screwing in a countersunk bolt for fixing the round shank on one side of the bottom of the jig. By providing a hole and screwing a countersunk bolt into the screw hole,
This round shank tool mounting jig is characterized in that the round shank part is fixed at three points: the groove bottom, the groove side wall, and the bolt bolt.

In the present invention, the shank part of the round shank by I.
N! I wall part, and especially the tightening 1 dimension is adopted for use.
It has a structure in which it is fixed at three points on the counter part of the bolt, and is unique in that the round shank part (5) can be securely and very firmly attached to the holder (11).

The mounting jig is usually a rectangular holder for mounting on a lathe, but it is not limited to this, and the material is high strength and hard, such as iron metal or cemented carbide lined. Hard material with less wear and tear! T+ etc. are used.

In the present invention, the countersunk bolt tightens the round shank part, and the countersunk part presses against the round shank,
Since this is a hinge that comes into contact, it is preferable to use a hard material with crushing mechanical strength, and the angle of inclination of the flat surface will create a wedge effect when tightening the round shank, making it suitable for 3-point fixation. The side wall of the rectangular groove of the removal jig is preferably hard and strong, and the outer periphery of the countersunk bolt head is in contact with the side wall of the rectangular groove of the fixing jig. , f) Tightening is sometimes loose (t) There is a hole to prevent the bolt from bending and escaping.
It is more preferable to drill a large hole for the bolt head head guide slide, thereby making the tightening of the shank part by the bolt counter part very strong.

Round shank bits usually have a circular shank, but a part of the circumferential surface of the shank may be cut into a flat plate shape.In this case, the fixation is better. The flat plate portion of the round shank portion is stably fixed at the bottom of the groove, and the other portions are fixed stably by the groove side wall portion and the bolt bolt.

For the round shank bit, the blade and its shank are soldered with silver solder 1.
It can be applied to any type of bite, such as a cut-off bite, a throw-away bite, 1 soliso and 1 pie, etc.

As described above, in the present invention, the round shank part is fixed at three points: the groove bottom, the bog side wall, and the counter part of the pole I. In particular, since the bolt counter part has an inclined surface, the wedge cannot be fixed. Due to the strong tightening action, the round shank tool can be attached very firmly to the tool, etc.

As a result, it is possible to prevent the occurrence of chatter (vibration phenomenon) during cutting operation fJ due to poor pressure contact between the round shank tool and the tool (f jig), maintain machining accuracy, maintain the life of the cutting tool, and maintain the accuracy of the R machine. , safety etc. can be improved, and it is extremely useful as a part of automation and labor-saving machines such as NC turning.

(Example) An example of the round shank bite mounting jig (in this example, a rectangular parallelepiped holder) of the present invention will be specifically described below based on the drawings.

Fig. 1 is a perspective view of the round shank bit removal jig of the present invention ρ1, Fig. 2 is a plan view of the jig for removing the round shank bite r-, and Fig. 3 (a) is the line A-A'. The cross-sectional view in Figure 3-(b) shows an embodiment in which a round shank tool bit with a part of the circumferential surface of the shank part cut into a flat plate shape can be obtained.
It is a sectional view taken along the A' line.

In FIGS. 1 and 2, a round shank tool mounting jig 1 consists of a rectangular parallelepiped-shaped holder made of alloy steel or the like, and the outside of the round shank portion 2b of a solid tool 2 has a blade portion 2a in the longitudinal direction of the holder. A rectangular groove 1 is provided which is cut to a size that allows the diameter to be inserted. In this groove 1°, the outer circumference of the shank of the round shank bit 2 and the outer circumference of the @ part of the screw (-F bolt 3) do not interfere with each other, and the countersunk portion 3a of the bolt head is inserted into the bit. In order to tighten !8 in contact with the outer circumference of the shank, the groove 1
A screw hole 1c is threaded on the bottom side of the holder.

Furthermore, the heads of the ports I to 3 are ff! of the groove 1'. In order to be able to properly insert and remove the round shank tool by sliding it in contact with the lI wall portion 1b while being guided,
A hole 1d for inserting a bolt head guide slide is provided in the side wall portion, and is concentric with the screw hole.

As shown in FIG. 3(a), by cutting a part of the outer periphery of the shear part of the cutting tool 2 into a flat plate shape, Three man-hours for positioning during replacement and attachment/detachment can be omitted, and the fixed contact area of the shank portion 2b can be increased to ensure stable attachment.

Therefore, by inserting the round shank bit 2 made of cemented carbide into the groove 1'' of the round shank bit installation jig 1, and screwing in the bolt 3 using a hexagon spanner, the round shank bit 1-E can be installed. Can be securely, firmly, and easily fixed to a jig.

Next, a method for manufacturing the main shank bite mounting jig will be explained.

First, fix the rectangular parallelepiped round shank mounting jig material on the milling machine, and then use an end mill to insert the rectangular groove 1" into it.
, and then place it on a drilling machine with a! After drilling a pilot hole using a drill, a tap is placed in the pilot hole to form a screw thread.

Thereafter, using a counterbore cutter, a hole for inserting the nut head guide slide is further cut in the upper part of the pilot hole, thereby completing the production of the round shank bit installation jig 1.

In this way, the production of the round jar/cube mounting jig 1 of the present invention (Y) has the advantage that it can be easily made by simply using a fly-chair, a ball, and a tap, and is suitable for complex, 1-7 special a-bars. No tools required.

As described above, the jig 1 can easily manufacture the round shank cutting tool storage f- of the present invention, and the tool can be easily attached, detached, and replaced by simply screwing the pole I-3, and it is also reliable and strong. It is something that can be done.

(Effects of the Invention) As described in detail in the examples above, the round shank bij and the jig of the present invention are the shank part of the round shank bij and the bottom of the rectangular groove of the accommodation jig, The round shank part can be securely and very firmly secured due to the M construction, which is fixed at three points: the side wall part, and especially the counter part of the bolt, which was used for tightening. It is taken up by a jig.

1. Since the counter part of the bolt is an inclined surface, a strong tightening force is applied to the 9 shank part like a hexagonal bolt.

In addition, if the countersunk bolt for tightening (t) slides against one side wall of the removal jig, the countersunk bolt for tightening (t) will be prevented from bending outward and escaping during tightening. Tightening of the round shank J by Sarabo y) ``j (J always becomes strong.

Furthermore, the production of the round shank bi-1 jig is simple, economical and practical, and the number of component parts is only the screw and the jig body. Jl;
↑; Only a small number is required for t.

In addition, when applying a round shank tool bit with a flat part on the outer circumference of the round shank, positioning when replacing the tool becomes easier, and as a result, the top of the fixed contact surface becomes larger. It is possible to stably attach the mounting r- to the jig.・

[Brief explanation of drawings]

Fig. 1 is a perspective view of a round shank bite tool (f jig) according to an embodiment of the present invention, Fig. 212I is a plan view thereof, and Fig. 3 (A) is a
- A sectional view taken along line A'; FIG. 3-(A) is a sectional view taken along line 1-A' showing an embodiment of the pond.

Claims (4)

[Claims] (1) Provide a rectangular groove of the required depth on one side of the mounting jig for inserting the round shank, and provide a screw hole on one side of the bottom of the groove for screwing in the countersunk bolt for fixing the round shank. A round shank tool mounting jig characterized in that the round shank part is fixed at three points: the groove bottom, the groove side wall, and the bolt countersunk by screwing together a countersunk bolt. (2) One side wall of the rectangular groove for inserting the round shank is a countersunk bolt head guide sliding wall that slides into contact with the outer circumference of the head of the countersunk bolt. Shank bite installation jig. (3) A round shank cutting tool is a cutting tool in which a part of the circumferential surface of the shank part is cut into a flat plate shape, and the round shank part has a flat plate part that is the groove bottom and other parts that are the groove side walls and the groove bottom. 3. A round shank bite mounting jig according to claim 1 or 2, wherein the round shank bite mounting jig is fixed at a counter part of the bolt. (4) At least a portion of the countersunk bolt and the mounting jig are made of cemented carbide, and one side wall of the mounting jig is in sliding contact with a portion of the outer periphery of the bolt head, allowing the bolt to escape. A round shank tool mounting jig according to any one of claims 1 to 3, characterized in that the round shank tool mounting jig is provided with a hole for inserting a countersunk bolt head guide slide to prevent this.