CN217344623U - Double-cutter automatic cutter changing mechanism - Google Patents

Abstract

The utility model provides an automatic tool changing mechanism of double knives, includes the arm of a knife, and the arm of a knife is close to the appearance sword portion that both ends have the flute profile, holds sword portion and has and carry out tight spring catch to the cutter, the middle fixedly connected with integral key shaft of arm of a knife, on the rotatory hydro-cylinder fixed mounting frame, the rotator of rotatory hydro-cylinder be the hollow shaft, has an internal spline in the hollow shaft, the integral key shaft slides and wears to establish in the internal spline direct or indirect rotation after the hollow shaft is connected on the jar pole of tool changing cylinder, the jar pole direction of motion of tool changing cylinder unanimous with the axial of integral key shaft. The tool changing mechanism can realize automatic tool changing under the situation of two tools, does not need a tool magazine, and has simple structure and small volume.

Description

Double-cutter automatic cutter changing mechanism

Technical Field

The utility model relates to a tool changing mechanism on the lathe, in particular to double knives tool changing mechanism belongs to digit control machine tool technical field.

Background

In a numerical control machining center, under the condition that a plurality of cutters are needed to machine a machined workpiece, a machine tool is generally provided with an automatic cutter changing system, the automatic cutter changing system consists of a cutter storage and a cutter changing mechanical arm, when cutters need to be changed, a rotating piece of the cutter storage is carried by the cutter storage to rotate, so that the cutter needed by the next machining is located at a set position, the cutter changing mechanical arm takes out the cutter from the cutter storage, then the cutter to be changed is taken out of the machine tool, the required cutter is changed for the next machining, then the cutter changing mechanical arm puts the changed cutter back into the cutter storage, the capacity of the cutter storage in the cutter changing system is generally dozens of cutters, in the production of machine tools customized by customers, the designed machine tool can sometimes use one cutter in the whole machining process, but the precision and the quality of two large machining are higher, so that an optimized scheme is to configure two cutters, the tool changing mechanism needs to be provided, but the tool changing mechanisms in the current market are all provided with tool magazines, only a large upper space needs to be occupied, the cost is high, compared with a machine tool which only needs two machining tools, the tool changing mechanism has no obvious advantage of manual tool changing, but the manual tool changing obviously cannot realize the full-automatic one-time machining of workpieces.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that the tool changing exists under the condition that needs two processing cutters in the present digit control machine tool, provide an automatic tool changing mechanism of double knives.

In order to realize the purpose of the utility model, the following technical proposal is adopted: the utility model provides an automatic tool changing mechanism of double knives, includes the arm of a knife, and the arm of a knife is close to the appearance sword portion that both ends have the flute profile, holds sword portion and has and carry out tight spring catch to the cutter, the middle fixedly connected with integral key shaft of arm of a knife, on the rotatory hydro-cylinder fixed mounting frame, the rotator of rotatory hydro-cylinder be the hollow shaft, has an internal spline in the hollow shaft, the integral key shaft slides and wears to establish in the internal spline direct or indirect rotation after the hollow shaft is connected on the jar pole of tool changing cylinder, the jar pole direction of motion of tool changing cylinder unanimous with the axial of integral key shaft.

Further, the method comprises the following steps of; the spline shaft is rotationally connected to the sliding block, the sliding block is arranged on the sliding rail in a sliding mode, and the sliding block is fixedly connected with a cylinder rod of the tool changing cylinder.

Further, the method comprises the following steps of; the positioning cylinder is arranged near the rotating body, the periphery of the rotating body is provided with a positioning groove, a cylinder rod of the positioning cylinder faces the rotating body, a positioning rod is fixedly connected to the cylinder rod of the positioning cylinder, and after the positioning groove corresponds to the cylinder rod, the cylinder rod of the positioning cylinder extends out of the positioning rod and extends into the positioning groove.

Further, the method comprises the following steps of; the end part of the positioning rod is conical.

The utility model discloses an actively beneficial technological effect lies in: the tool changing mechanism can realize automatic tool changing under the situation of two cutters, does not need a tool magazine, has simple structure and small volume, and can realize automatic processing when being applied to a machine tool.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic side view of the present invention directed toward the spindle.

Fig. 3 is a schematic top view of the present invention.

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a cutter arm; 101: a knife accommodating part; 102: a spring pin; 2: a spline shaft; 3: rotating the oil cylinder; 4: a rotating body; 5: a tool changing cylinder; 6: a slider; 7: a slide rail; 8: positioning the air cylinder; 9: positioning a rod; 10: a machine tool spindle.

The positioning oil cylinder is removed in fig. 2 and 3. Only the rotating body of the rotating cylinder is shown in fig. 1.

As shown in the accompanying drawings, a double-cutter automatic cutter changing mechanism is used for a numerical control machine tool, and 10 in the drawing is a machine tool spindle, and comprises a cutter arm 1, wherein the cutter arm is provided with groove-shaped cutter accommodating parts 101 near two ends, the cutter accommodating parts are provided with spring pins 102 for clamping cutters, and the cutter arm is of an existing structure.

The middle fixedly connected with integral key shaft 2 of tool arm, 3 fixed mounting frames of rotatory hydro-cylinder, rotatory hydro-cylinder driven rotator 4 be the hollow shaft, have the internal spline in the hollow shaft, integral key shaft 2 slides and wears to establish in the internal spline direct or indirect rotation connection after passing the hollow shaft on the jar pole of tool changing cylinder, the jar pole direction of motion of tool changing cylinder unanimous with the axial of integral key shaft. In this embodiment, the spline shaft is rotatably connected to the sliding block 6, the sliding block is slidably disposed on the sliding rail 7, and the sliding block is fixedly connected to the cylinder rod of the tool changing cylinder 5.

As this the utility model discloses an optimization installs location cylinder 8 near the rotator, 4 peripheries of rotator have the constant head tank, the jar pole of location cylinder is facing to the rotator, fixedly connected with location 9 poles on the jar pole of location cylinder, the tip of locating lever be conical, the constant head tank corresponds the back with jar pole position, the jar pole of location cylinder stretches out the locating lever and extends in the constant head tank. When the tool changing mechanism is used, in an initial state, the cutter arm is positioned in a vertical state, a cutter is arranged in the cutter accommodating parts at two ends of the cutter arm, a cutter for processing a workpiece is directly arranged in the taper hole of the main shaft, in the embodiment, the taper hole of the main shaft adopts BT50, when a tool needs to be changed, the main shaft is controlled to move to a cutter changing position, the rotary oil cylinder drives the rotary body to rotate, the cylinder rod of the positioning air cylinder moves the positioning rod to enter the positioning groove after the rotary body rotates to the position, the rotary body is ensured to be relatively fixed in the following action, the rotary body rotates to drive the spline shaft to rotate, the cutter accommodating part without the cutter on the cutter arm rotates to a cutter unloading position, the cutter on the main shaft enters the cutter accommodating part, the cutter changing air cylinder drives the cutter arm to move in the direction away from the main shaft, the existing cutter on the main shaft is unloaded, the positioning oil cylinder acts to enable the positioning rod to be separated from the positioning groove, and the rotary oil cylinder acts to drive the rotary body to rotate by 180 degrees, after the positioning cylinder is rotated in place, the cylinder rod of the positioning cylinder moves the positioning rod to enter the positioning groove, the tool changing cylinder drives the spindle of the spline shaft to move in the direction to place a tool into a taper hole of the spindle, the positioning oil cylinder acts to enable the positioning rod to be separated from the positioning groove, and the rotating oil cylinder drives the rotating body to rotate to enable the tool arm to be vertical.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples illustrated in the specification.

Claims (4)

1. The utility model provides an automatic tool changing mechanism of double knives, includes the tool arm, and the tool arm is close to both ends and has the groove-shaped appearance sword portion, holds sword portion and has the spring catch that presss from both sides tightly to the cutter, its characterized in that: the middle fixedly connected with integral key shaft of tool arm, on the rotatory hydro-cylinder fixed mounting frame, rotatory hydro-cylinder driven rotator be the hollow shaft, have an internal spline in the hollow shaft, the integral key shaft slides and wears to establish in the internal spline direct or indirect rotation after passing the hollow shaft and connects on the jar pole of tool changing cylinder, the jar pole direction of motion of tool changing cylinder unanimous with the axial of integral key shaft.

2. The double-blade automatic tool changing mechanism according to claim 1, wherein: the spline shaft is rotationally connected to the sliding block, the sliding block is arranged on the sliding rail in a sliding mode, and the sliding block is fixedly connected with a cylinder rod of the tool changing cylinder.

3. The double-blade automatic tool changing mechanism according to claim 1, wherein: the positioning cylinder is installed near the rotating body, the positioning cylinder is installed on the periphery of the rotating body, the cylinder rod of the positioning cylinder faces the rotating body, the positioning rod is fixedly connected to the cylinder rod of the positioning cylinder, and after the positioning groove corresponds to the cylinder rod in position, the cylinder rod of the positioning cylinder extends out of the positioning rod and extends into the positioning groove.

4. The double-blade automatic tool changing mechanism according to claim 3, characterized in that: the end part of the positioning rod is conical.

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