JPH0593704U - Clamp holder - Google Patents

Abstract

(57) [Summary] [Purpose] To stabilize the clamping action of the presser foot 4 against the cutting edge tip 3. [Structure] A cutting edge tip 3 arranged in a tip seat 2 of a tool body 1 is fixed by a presser foot 4 and a tightening screw 5. The presser foot 4 is located in a notch step portion 7 formed so that the opposite end of the pressing portion 6 is separated from the tip seat 2. The notched step portion 7 has a side wall 7a and a rear wall 7b. The presser foot 4 is pressed by the pushing screw 8 on the side wall 7a side, and the key 9 and the key groove are provided on the rear wall 7b side. The engagement action by 10 is given.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp holder applied to machining such as parting off and threading, and in particular, it is intended to stabilize the attachment of a presser foot.

[0002]

[Prior Art]

 Conventionally, as this type of clamp holder, for example, Japanese Patent Application Laid-Open No. 3-149105, in which a cutting edge tip is fixed by a presser foot and a tightening screw, is disclosed. In the clamp holder of this publication, the rear end of the presser foot is widened so that a tapered pressing surface having an inclination angle β is formed on the lower surface thereof.

[0003]

[Problems to be solved by the device]

 However, in the structure of the clamp holder in which the protrusion of the cutting edge tip becomes long, the width of the presser foot must be further increased, and there is a problem that a stable clamping force by the presser foot cannot be obtained.

Therefore, in the present invention, as the presser foot, a presser foot whose width is not widened is applied and the presser foot is stabilized during clamping.

[0005]

[Means for Solving the Problems]

 The present invention has been made in view of the above points, and a presser foot for fixing a cutting edge tip is arranged such that an end opposite to the cutting edge tip is arranged in a notch step portion apart from the tip seat. . The rear wall side of the notch is engaged with the key and the key groove, and the side wall side is pressed by the push-out screw to stabilize at the time of clamping.

[0006]

[Action]

 In the clamp holder of the present invention, the rear end of the presser foot is in the notch step portion and is positioned by the key, the key groove and the push screw. Therefore, the presser foot can be stabilized during clamping.

[0007]

【Example】

 An embodiment of the clamp holder of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a tool body in which a tip seat 2 is formed at a narrow end, in which a cutting edge tip 3 is arranged and a presser foot 4 is provided. And clamped by the tightening screw 5. In this case, the presser foot 4 extends with substantially the same width as the pressing portion 6 against the cutting edge tip 3, and the opposite end thereof is located in the notch step portion 7 formed in the tool body 1.

The notched step portion 7 has a side wall 7 a and a rear wall 7 b, an extrusion screw 8 is provided on the side wall 7 a side, and a key 9 and a key groove 10 are formed on the rear wall 7 b side. . In the illustrated case, the key 9 is formed on the presser foot 4 side and the key groove 10 is formed on the rear wall 7b side, but the reverse case is also possible.

The cutting blade tip 3 of the present embodiment is one having upper and lower surfaces of V-shaped projections so that the tip seat 2 and the pressing portion 6 of the presser foot 4 can be reliably pressed and supported. It is shown. However, the present invention is not limited to this, and the upper and lower surfaces of the V-shaped recess or the pressing portion of the presser foot 4 may be flat.

Further, the positional relationship of the tightening screw 5, the pushing screw 8 and the like with respect to the presser foot 4 of this embodiment is set as follows when the total length L is taken as a reference.

That is, L ₁ = (0.4 to 0.8) L for the tightening screw 5 and L ₂ = (0.1 to 0.3) for the extrusion screw 8. ) L, key 9 was set to L ₃ = (0.05-0.2) L.

[0013]

[Effect of the device]

 According to the present invention, as described above, the rear end of the presser foot 4 is located in the notch step portion 7 and is positioned by the key 9, the key groove 10 and the pushing screw 8. This stabilizes the cutting edge tip 3 during clamping. Therefore, it is suitable for heavy cutting in which the outer diameter of the pipe is cut off. This is because in pipe cutting, a cutting force is applied in the left-right direction of the cutting edge tip 3 as well, so that a strong clamping force is required.

[Brief description of drawings]

FIG. 1 is a partial plan view showing an embodiment of the clamp holder of the present invention.

FIG. 2 is a partial front view.

[Explanation of symbols]

 1 Tool body 2 Tip seat 3 Cutting edge tip 4 Presser foot 5 Tightening screw 6 Pressing part 7 Notch step 7a Side wall 7b Rear wall 8 Extrusion screw 9 Key 10 Key groove

Claims (1)

[Scope of utility model registration request] 1. A cutting edge tip 3 is disposed in a tip seat 2 provided at one end of a tool body 1, and the cutting edge tip 3 is attached by using a presser foot 4 and a tightening screw 5. In the clamp holder described above, in the presser foot 4, the opposite end of the pressing portion 6 with respect to the cutting edge tip 3 is inside the notch step portion 7 separated from the tip seat 2, and at the rear wall 7b side of the notch step portion 7. The clamp holder is characterized by being engaged by the key 9 and the key groove 10 and being pressed by the pushing screw 8 on the side wall 7a side.