JPH04133504U - Fine adjustment cutting tool - Google Patents

Abstract

(57) [Summary] [Purpose] To enable fine adjustment of the contact angle of the cutting edge of the cutting tool attached to the quill to the workpiece. [Structure] A fulcrum member 13 is attached to the quill 2, which comes into contact with a portion of the inner surface of the cutting tool 10 near the tip. Part-time job 10
The end peripheral surface of an adjusting rod 15 fitted into the quill 2 via the eccentric collar 14 is brought into contact with a portion of the inner surface of the quill 2 near the tail end. By rotating the eccentric collar 14, the adjustment rod 15 is slightly moved in the radial direction of the quill 2, and the cutting tool 10 is moved to the fulcrum member 13.
The contact angle of the cutting blade 10a with respect to the workpiece W is finely adjusted by tilting the cutting blade 10a using the cutting edge 10a as a fulcrum.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention attaches a cutting tool to the quill, which has a cutting edge at the tip that protrudes from the quill. Fine adjustment cutting in which the quill is rotated through the tool holder to cut the workpiece. Regarding tools.

0002

[Conventional technology]

Conventionally, this type of cutting tool was published in Japanese Utility Model Publication No. 59-100506 and Japanese Utility Model Publication No. 63-22004. According to the publication, the base of the quill is inserted into the tool holder through the eccentric sleeve, and the tool It is known that the radius of rotation can be finely adjusted by rotating an eccentric sleeve. ing.

0003

[Problem that the idea aims to solve]

Recently, in order to improve cutting accuracy, the contact angle of the cutting edge of the cutting tool with the workpiece has become more accurate. Although adjustment is required, there is a method that allows fine adjustment of the contact angle with a simple structure. No tools have been proposed yet.

0004 In view of the above points, this invention not only finely adjusts the turning radius of the cutting tool but also improves the cutting edge. We provide tools with a simple structure that allows fine adjustment of the angle of contact with the workpiece. Its purpose is to.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the present invention uses a cutting blade at the tip of the quill that protrudes toward the tip of the quill. Attach the cutting tool with the quill, and fit the base of the quill into the tool holder via the eccentric sleeve. A cutting tool that allows fine adjustment of the turning radius of the cutting tool by rotating the eccentric sleeve. In the tool, attach the quill to the tip of the inner surface of the cutting tool that faces inward in the radial direction of the quill. Attach the fulcrum member that touches the part, and attach it to the part near the tail end of the inside surface of the tool An adjustment rod whose peripheral surface was brought into contact was inserted into the quill via an eccentric collar.

[0006]

[Effect]

By rotating the eccentric collar, the adjustment rod moves slightly in the radial direction of the quill. As a result, the tail end of the tool is pushed and pulled in the radial direction, creating a point of contact with the fulcrum member on the tool. A slight tilt is applied to the fulcrum, and the contact angle of the cutting edge at the tip of the cutting tool with the workpiece is is finely adjusted.

[0007]

【Example】

Referring to FIG. 1, 1 indicates a tool holder, 2 indicates a quill, and the base 2a of the quill 2 is It is inserted into the tool holder 1 through the eccentric sleeve 3, and the holder is inserted into the holder 1. A rotation stopper 5 that engages with a pin 4 implanted in the holder 1 to prevent rotation is provided, and the rotation stopper 5 is provided. is engaged with the groove 2b formed on the end surface of the base 2a, and the bolt 6 is fastened to the base 2a. Then, lock the quill 2 against the tool holder 1, and then insert the quill 2 into the tool holder 1. An annular spring receiver 8 that is locked via a puller 7 is provided, and the spring receiver 8 and the rotation stopper are provided. A spring 9 interposed between the retaining body 5 applies a pulling force to the base 2a toward the tool holder 1. I added it. The eccentric sleeve 3 has an inner circumferential surface that fits the base 2a and an outer circumferential surface that fits the tool holder 1. The sleeve 3 has a rectangular flang that is eccentric to the surface and protrudes from the tip of the tool holder 1. the sleeve 3 by forming a flange 3a and using an appropriate tool that engages the flange 3a. This rotation causes the quill 2 to rotate with respect to the rotation axis of the tool holder 1. The amount of eccentricity, that is, the rotation radius of the cutting tool 10 attached to the quill 2 can be finely adjusted. Ta. The cutting tool 10 has a cutting edge 10a at the tip that projects forward of the quill 2. The cutting tool 10 is biased radially inward to the quill 2 by a pair of spring-loaded bolts 11. and installed it. Although not shown in the cutting tool 10, in the axial direction through which each bolt 11 is inserted. A longitudinal mounting hole is formed, and as shown in Fig. Attach the adjusting screw 12 that comes into contact with the flange 2c near the base 2a of the screw 1. 2 allows the position of the cutting tool 10 to be finely adjusted in the axial direction.

[0008] The quill 2 has a cutting tool 10 on the inner surface of the cutting tool 10 facing inward in the radial direction of the quill 2. A fulcrum member 13 that comes into contact with the tip of the quill is screwed onto the quill. 2, place the cutting tool 1 inside the part near the tail end of the cutting tool 10 as shown in FIG. A recessed hole 2d is formed in a direction substantially perpendicular to the normal direction of the inner surface of the recessed hole 2d, and an eccentric Fit the collar 14 and insert the adjustment rod 15 into the eccentric inner peripheral surface of the collar 14. The inside of the cutting tool 10 is attached to the circumferential surface of the inner end of the adjustment rod 15 protruding from the collar 14. A portion near the tail end of the surface was brought into contact with the portion via a contact member 16 screwed onto the portion. A bolt with a disc spring 17 is inserted into the inner end of the adjustment rod 15 through the bottom wall of the recessed hole 2d. 18 is attached, and the biasing force of the disc spring 17 moves the adjustment rod 15 into the eccentric collar. 14, and a square flange 14a is formed at the outer end of the eccentric collar 14. and the collar 14 can be rotated using a suitable tool that engages the flange 14a. I did it like that. According to the rotation of the eccentric collar 14, the adjustment rod 15 is aligned in the radial direction of the quill 2. The part near the tail end of the cutting tool 10 that comes into contact with the rod is pushed and pulled in the radial direction. The cutting tool 10 is tilted using the part near the tip where it contacts the fulcrum member 13 as a fulcrum. The contact angle of the cutting edge 10a at the tip of the cutting tool 10 with respect to the workpiece W is finely adjusted. Ru. 19 and 20 in the figure are used as a guide for operating the eccentric sleeve 3 and eccentric collar 13. This is a scale attached to the tool holder 1 and quill 2.

[0009]

[Effect of the idea]

As is clear from the above explanation, according to the present invention, fine adjustment of the turning radius of the cutting tool is possible. In addition, the angle of contact of the cutting edge with the workpiece can be easily adjusted by rotating the eccentric collar. It can be adjusted by attaching a fulcrum member to the quill and using an eccentric collar. It is sufficient to simply insert and insert the adjustment rod, making the structure simple and inexpensive. Ru.

[Brief explanation of drawings]

[Figure 1] Partially cutaway side view of an example of the proposed tool

[Figure 2] Sectional view taken along the line II-II in Figure 1

[Figure 3] Sectional view taken along line III-III in Figure 2

[Explanation of symbols]

1 Tool holder 2 Quill 2a Quill base 3 Eccentric sleeve 10 Bit 13 Fulcrum member 14 Eccentric collar 15 Adjustment rod

Claims (1)

[Scope of utility model registration request] Claim 1: A cutting tool having a cutting edge at the tip protruding forward is attached to the quill, the base of the quill is inserted into a tool holder via an eccentric sleeve, and the turning radius of the tool is finely adjusted by rotation of the eccentric sleeve. In a cutting tool that is adjustable, a fulcrum member is attached to the quill that abuts on a portion of the inner surface of the cutting tool that faces radially inward toward the tip, and a peripheral surface is attached to a portion of the inner surface of the cutting tool that is closer to the tail end of the cutting tool. A fine adjustment type cutting tool characterized by an adjustment rod that is in contact with a quill inserted into the quill via an eccentric collar.