JPH0137842Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a cutting tool movement adjustment device for a boring tool.

[Prior art]

In the case of a boring tool, the diameter of the hole to be bored is determined by moving the cutting tool relative to the boring bar.

By the way, in the past, such movement of the cutting tool has been done by relying on human intuition or by using a dial gauge (bit setting gauge).

However, the former method requires special ability and cannot be performed by any number of people, and the latter method requires time and effort to find the highest part of the bite.

[Purpose of invention]

This invention was made based on such a situation, and its purpose is to provide a movement adjustment device for a boring tool that can be easily adjusted by any person.

[Structure of the idea]

This purpose is to provide a boring tool in which the diameter of a bored hole is adjusted by moving a bite member relative to a boring bar using appropriate means.
The device includes a scale plate, a pointer indicating the scale of the scale plate, and a pinion gear interlocking with the pointer, and a rack is formed on a side surface of the tool member in the direction of movement of the tool member, and the rack and the pinion gear are connected to each other. This was achieved by meshing the two, and by making a scale on the scale plate to indicate the amount of movement of the cutting tool member.

[Explanation of Examples]

Embodiments of the present invention will be described below based on the drawings.

In Fig. 3, 11 is a boring machine table;
13 is a workpiece placed on the table 11.
Further, 15 is a spindle head, 17 is a boring shaft, and 19 is a boring bar. A cutting tool 21 is installed on this boring bar 19 so as to be movable forward and backward.

In FIGS. 1 and 2, reference numeral 23 denotes a through hole, which is bored in the boring bar 19. The through hole 23 is diagonal to the axis of the boring bar 19, and opens at the corner of the tip of the boring bar 19.
Reference numeral 21 denotes the aforementioned cutting tool, which is fitted into the through hole 23 in a movable manner. The side surface of this cutting tool 21 has a male threaded portion A, and an adjusting screw 25
It is screwed together. Therefore, when the adjustment screw 25 is rotated, the cutting tool 21 moves forward or backward. A fixing screw 27 is screwed into the rear end of the cutting tool 21 from the rear end of the through hole 23 via the support plate 29. After adjusting the forward and backward movement of the tool 21, this fixing screw 27
This is to fix the movement of 1.

Next, 31 is a rack, which is formed on the side surface of the cutting tool 21 along the longitudinal direction. This rack 31 advances and retreats as the cutting tool 21 advances and retreats. 33
is a pinion gear, which is installed on the boring rod 19. This pinion gear 33 is connected to the rack 31.
It's in sync with. 35 is a large gear, which rotates through a shaft 37 in the same manner as the pinion gear 33. and,
This large gear 35 meshes with a small gear 39.

On the other hand, 41 is a dial plate, which is fitted and fixed in the surface recess 19a of the boring bar 19. The scale on the dial 41 directly indicates the amount of movement of the cutting tool 21 (the amount of movement in the radial direction of the boring hole).
Further, 43 is a pointer, which is installed at the center of the dial 41. This pointer 43 rotates through a shaft 45 at the same time as the small gear 39.

[Operation of the embodiment]

For this reason, rotate the adjusting screw 25 to
1 moves forward or backward, the pinion gear 33 rotates via the rack 31, and the pointer 43 swings on the dial 41 via the rotation of the large gear 35 and small gear 39. The amount of movement of the cutting tool 21 (the amount of movement in the radial direction of the boring hole) is shown on the dial 41.

[Effect of idea]

The boring tool bit movement adjusting device according to this invention is a boring tool that adjusts the diameter of a bored hole by moving a bit member relative to a boring bar using an appropriate means, and the boring bar includes: The tool includes a scale plate, a pointer pointing to the scale of the scale plate, and a pinion gear interlocking with the pointer, and a rack is formed on the side surface of the tool member in the direction of movement of the tool member, and the rack and the pinion The gears mesh with each other, and the scale on the scale plate indicates the amount of movement of the cutting tool member (the amount of movement in the radial direction of the boring hole).

Therefore, any number of operators can easily adjust the cutting tool with high precision while observing the amount of movement of the cutting tool (the amount of movement in the radial direction of the boring hole) without requiring any special intuition or special gauges. It is something.

[Brief explanation of drawings]

The drawings show an embodiment of the advancement/retraction adjustment device for a boring tool according to this invention, and FIG.
FIG. 2 is a perspective view of the actuating mechanism of the pointer, and FIG. 3 is a side view of the boring tool advance/retreat adjustment device. 17...Boring bar, 21...Bite, 25,A
... Appropriate means (25 ... adjustment screw, A ... male threaded part), 31 ... rack, 33 ... pinion gear,
41... Scale plate, 43... Pointer.

Claims (1)

[Claims for Utility Model Registration] (1) A boring tool that adjusts the diameter of a bored hole by moving a bite member relative to a boring bar using appropriate means, the boring bar having a scale plate; It is equipped with a pointer pointing to the scale of this scale plate and a pinion gear that interlocks with the pointer, and a rack is formed on the side surface of the tool member in the direction of movement of the tool member, and the rack and the pinion gear are connected to each other. and further, the scale of the scale plate indicates the amount of movement of the tool member. (2) A utility model characterized in that the appropriate means comprises a male threaded portion formed on the side surface of the bite member, and an adjustment screw screwed into the male threaded portion and fixed to the boring bar. A bit movement adjusting device for a boring tool as claimed in claim 1.