JPS6056801A - Index tool rest for composite machining - Google Patents

Abstract

PURPOSE:To enable positioning in a short time on replacing a cutting tool and improve machining efficiency by symmetrically installing an outside tool and an inside tool on the rear ends of both right and left sides of, and also rotary tools on the right and left of the front side of, a rotatable square index tool rest. CONSTITUTION:As for the order of machining, e.g., the side 9b of a tool rest 9 is indexed in the Z-axis direction, carrying out the cutting of the outer periphery and the end face of a workpiece W by means of a tool T3 and, then, the side 9a of the tool rest 9 is indexed parallel to the Z-axis and a main spindle is indexed for C-axis to cut the outer periphery for providing an even part or a key groove by means of a tool T1. Next, the side 9a of the tool rest 9 is indexed parallel to an X-axis to drill the end face of the workpiece W with a tool, or the side 9a of the tool rest 9 is indexed parallel to the X-axis to cut and bore the inside diameter of the workpiece W with a tool. Thus, the workpiece can be positioned at a machining position in a very short time by merely rotating the tool rest and slightly shifting the X and Z axes even for changes in cutting parts or hinds of cutting, enabling reduction in idle time and efficient machining.

Description

[Detailed description of the invention] Technical field TECHNICAL FIELD The present invention relates to an improvement of a tool rest for a multi-tasking lathe.

PRIOR ART The turrets of conventional N and C lathes often have separate turret turrets for turning tools and rotary tools, which are placed in positions to avoid interference with the chuck, psychological mount, or each turret. I'm waiting. For this reason, when a command for outer diameter, inner diameter, or drilling is issued, the stroke for selecting a tool and positioning it at a processing position becomes long, resulting in an unexpectedly large amount of idle time. In addition, when a large number of tools are mounted on one tool post, there is a lot of interference between the chuck, the psychological table, and the tool post, making it difficult to arrange and control them.

Purpose Therefore, the present invention was made in view of the above, and there is little interference with each part, and it is possible to improve the cutting direction (X-axis) in the main axis direction (Z-axis) of the tool post.
The objective is to provide an indexing tool rest that requires less stroke of the shaft.

Solution: One side of the N4 surfaces in a square indexing tool rest that is mounted so as to be movable in parallel and perpendicular directions to the main spindle axis of a compound machining lathe and rotated about an axis perpendicular to the two directions. Rotary tool attachment parts with taber shanks having axes perpendicular to the turret rotation axis and parallel to each other are provided at two positions sandwiching the center of the turret rotation axis. A rotary tool driving means is provided on the opposite side of the center from the rotary tool, at right angles to the pivot axis.

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

In a known compound machining lathe, a main spindle 2 is rotatably and indexably supported on a headstock 1 on a bed (not shown), and a workpiece W is gripped by a chuck B fitted on the end of the main spindle.

Further, a psychological stand 6 having a tailstock spindle 5 on which a center 4 is fitted is placed opposite the headstock 1 on the bed. Furthermore, the positioning of the carriage 7 placed on the X-axis direction guide surface on the bed is controlled by a feed screw from an NC-controlled servo motor (not shown). A transverse feed table 8 is mounted on the reciprocating table 7 so as to be slidable in the X-axis direction, and its position is controlled by a feed screw from an NC-controlled servo motor (not shown). M
On top of feed table 8! A square tool rest 9 that extends from the same side is provided, and is rotated around a pivot shaft 10 having an axis perpendicular to each of the X-axis and the Z-axis.
9b*9a+9d is indexed parallel to the Z axis. The side surface 9a of this square indexing tool post 9 has rotating tool mounting portions A with tapered shanks with axes perpendicular to the rotation axis and parallel to each other at two positions symmetrical with respect to the rotation axis 1o.

B is provided, and tools from the magazine are conveyed to the receiving hole of the Taber shank by an exchange arm (not shown).

Rotation is transmitted to the rotary tool mounting portions A and B from a separate motor (or on the tool rest) via gears (not shown) built into the tool rest 9, respectively. Normally, the rotating tool mounting part A is mounted with a tool T1 for processing the outer periphery of the workpiece, such as an end mill, and the rotary tool mounting part B is mounted with a tool T2 for processing the end surface of the workpiece, such as a drill. In addition, the left side (M1 diagram) 9b and right side 9c adjacent to the side 9a are located at positions opposite to the rotary tool mounting parts A and B with respect to the rotation axis, and axes that are perpendicular to the rotation axis and on the same axis or parallel to the rotation axis. Two turning tool mounting portions C and D with taper shanks are provided, each serving as a taper shank receiving hole. Normally, an outer diameter turning tool T6 and an inner diameter cutting tool T4 are attached to the mounting portion C, respectively. Note that a tool attachment portion is not necessarily provided on the side surface 9c.

Each of the tool rests configured in this manner has a tool changer attached to the tool attachment portion, and an end mill T1 for key machining is attached to the attachment portion A. To make a hole in the mounting part B, use a drill T2. A boring hole or a cutting tool T4 for inner diameter cutting is attached to the mounting portion C, and is controlled by the NC.

In the machining order, for example, as shown in FIG. 2, the side surface 9b of the tool post 9 is indexed in the X-axis direction, and the outer periphery of the workpiece W is cut with the tool T3. Also, cutting of the end face is performed. Next, as shown in FIG. 3, the side surface 9a of the tool rest 9 is indexed parallel to the Z-axis, the main shaft is brought out to the C-axis side, and a flat portion or key groove is cut on the outer periphery using the tool T1. Next, as shown in FIG. 4, the tool rest 9 is indexed parallel to the side surface 9aiX axis, and a hole is drilled in the end surface of the workpiece W using the tool T2. Next, as shown in FIG. 5, the side surface 9a of the tool rest 9 is indexed parallel to the X-axis, and the inner diameter of the workpiece W is cut and bored using the tool T4. The processing order is not limited to this.

Effects As detailed above, the present invention has a four-cornered indexing tool rest with an outer diameter tool and an inner diameter tool symmetrically mounted on both sides of the rotation center.
In addition, since the rotary tool is mounted on the other side in two positions symmetrical to a line that passes through the center of the rotation axis of the tool post and is parallel to sides 9c and 9d, it is easy to change the cutting area and cutting content. By simply rotating the tool rest and slightly moving the x and Z axes, the tool can be positioned at the machining position in an extremely short time, reducing idle time and allowing efficient machining. In addition, since the tools are arranged on one tool post with consideration to the machining direction, there is less interference with the chuck, the psychological stand, the lower tool post, etc., making operations and programming easier.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the tool arrangement, and FIGS. 2, 6, 4, and 5 are diagrams showing the machining status of each tool. 1... Headstock 6... Shinshindai 9... Turret 10... Turret pivot shaft 9a+ 9b
+ 9c + 9d "'Turret side AB...Rotary tool mounting section C, D...Turning tool mounting section

Claims (1)

[Claims] (1) In a four-sided indexing tool rest that is mounted so as to be movable in parallel and perpendicular directions to the spindle axis of a multitasking lathe, and that is rotated and indexed by an axis perpendicular to the two directions, Rotary tool mounting parts with taber shanks having axes perpendicular to the rotation axis and parallel to each other are provided at two positions sandwiching the center of the tool post rotation axis on one side of the inner side, and on two adjacent sides of the side. A turning tool mounting portion with a taber shank is provided on the opposite side of the rotating tool with respect to the center of the turning axis, the turning tool mounting portion is perpendicular to the turning axis and has an axis that is on the same axis or parallel to the turning axis, and further includes the tool rest. An indexing tool post for complex machining is characterized by two features: a rotary tool drive means is provided.