JPH0230205Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is used when turning a workpiece such as an engine piston in the same shape as a copying model. The present invention relates to a copying stand for cutting, in which a mounting portion for supporting the main body of the stand so as to be swingable in the distance direction with respect to the copying model is connected to the lower part of the main body, which is provided with a mounting portion for a cutting tool and a cutting tool.

(Prior art) For example, there is the Utility Model Application No. 59-59252 which has this type of profiling table for cutting, but these profiling tables are made of a single metal material with high rigidity such as steel or cast iron. This method suppresses the deformation of the copying table due to vibration and acceleration changes that occur with high-speed rotation of the copying model, and prevents deterioration of the copying characteristics that greatly affects machining accuracy. Although this can be suppressed, since the weight of the copying table increases, the inertial force of the reciprocating rocking motion of the copying table becomes large, especially when the copying model rotates at high speed, resulting in a problem of poor followability.

(Problems to be Solved by the Invention) The purpose of the present invention is to reduce the weight of the copying table while increasing its rigidity, thereby enabling high-speed and highly accurate copying processing.

(Means for Solving the Problems) The characteristic configuration of the cutting profiling table according to the present invention is that the table main body and the mounting portion are made of a light metal, and the table body and the mounting portion are made of a metal material with higher rigidity than the constituent metal. embedding a core material made of aluminum in the stand main body, and disposing the core material substantially along the swing axis direction of the stand main body and a first core member disposed substantially along the swing direction of the stand main body. The second core part is arranged in series, and its functions and effects are as follows.

(Function) The stand main body and the mounting part are made of light metal such as aluminum alloy, and the stand main body is made of a light metal such as an aluminum alloy.
By embedding a core material made of metal, such as steel, cast iron, or sintered alloy, which is more rigid than the constituent metals of the base body and mounting parts, it is possible to reduce the overall weight while maintaining rigidity. can. Moreover, this core material is composed of a combination of a first core part disposed approximately along the direction of the swing axis of the stand main body and a second core part arranged substantially along the swing axis direction of the stand main body. Because of this, it is possible to provide sufficient strength against vertical bending force, lateral bending force, or both bending forces, and the difference between the cutting resistance of the cutting tool and the sliding resistance of the stylus. It is possible to provide sufficient strength against the resulting torsional force, and it is possible to suppress deformation of the copying table due to vibrations and acceleration changes that occur with high-speed rotation of the copying model.

(Effect of the invention) Therefore, by reducing the weight of the copying table, the inertia of the reciprocating rocking motion of the copying table when the copying model rotates at high speed can be reduced, and the tracking performance of the stylus can be improved. It is also possible to suppress the deterioration of the profiling characteristics due to the deformation of the table, making it possible to perform profiling at higher speed and with higher precision than in the past.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIGS. 3 to 6, copying models 1 are attached to both left and right sides of the machine frame F to configure a copying turning machine for cutting an elliptical piston W of an engine, which is an example of a workpiece. Two sets of tail stocks 3 for removably pressing and fixing the piston W between the boring head 2 and the copying model 1 are arranged at appropriate intervals in the front and rear direction, and
In the center of the machine frame F, there is disposed a copying model 1 held by the boring head 2 and tail stock 3, and a table T which can be driven and reciprocated in the left and right directions below the piston W.

Copying model 1 and piston W of this table T
A cutting copying table 6 is installed on both sides of the copying model 1, which is equipped with a mounting part for a stylus 4 that comes into contact with the copying model 1 to pick up the outer shape of the copying model 1, and a cutting tool 5, which is an example of a cutting tool. A biasing mechanism 7 is installed to swing freely around the horizontal axis P along the direction, and is provided with a biasing mechanism 7 that swings and biases the cutting copying table 6 in a direction approaching the copying model 1 and the piston W. An air cylinder 8 is provided for forcibly swinging the copying table 6 to a non-operating position against the urging force.

Further, a support member 9 is extended from the table T to the upper part of the copying model 1, and is located on the vertical line passing through the rotation axis of the copying model 1 and at a location corresponding to the attachment of the stylus 4. Copying model 1
A dust removal member 10 that comes into sliding contact with the stylus 4 is attached, and an air injection pipe 11 that injects dust removal air toward the sliding contact portion of the stylus 4 is provided extending from the air cylinder 8 side.

A rough cutting tool 5 is attached to one of the pair of front and rear cutting profiling tables 6, 6, and a finishing tool 5 is attached to the other, so that rough cutting and finishing can be performed by one reciprocating movement of the table T. are doing.

As shown in FIGS. 1 and 2, the cutting profiling table 6 has a main body 6A attached to both lower ends of the main body 6A, which has recesses 6a and 6b for mounting the stylus 4 and cutting tool 5. A pair of mounting portions 6B, 6B are arranged in series and are supported swingably around the horizontal axis P.
The stand main body 6A and the mounting parts 6B, 6B are made of aluminum alloy, which is an example of light metal, and the stand main body 6A is made of steel, which is an example of a metal material with higher rigidity than aluminum alloy (for example, carbon A core material 12 of steel (S55C) is embedded by casting means.

This core material 12 has a surface along the swinging direction of the cutting copying table 6, and serves as a pair of first core material portions that face each other at a predetermined interval in the swing axis direction.
1 and 2 between the plates 12a, 12a.
A second plate body 12b serving as a second core member having a surface along the vertical direction in the figure is welded, and the second plate body 12b and both first plate bodies 12a, 12a, and are constructed by welding a third plate body 12c as a second core portion having a surface extending in the lateral direction.

Both first plates 12a, 12a are arranged at positions corresponding to the attachment portions 6B, 6B of the cutting copying table 6, respectively.

The core material 12 is formed by cutting out portions corresponding to the recesses 6a and 6b so that a portion thereof is exposed from the recesses 6a and 6b.

In this way, the stand main body 6A and the mounting parts 6B, 6B
Although the copying table 6 is made of aluminum alloy to reduce its weight, the table main body 6A has a core material 12 made of steel that is more rigid than the constituent metals of the table main body 6A and the mounting parts 6B, 6B. Since the core material 12 is composed of a combination of three types of plates 12a, 12b, and 12c having surfaces oriented in different directions, not only vertical and lateral bending forces but also bite It is possible to provide sufficient strength against the torsional force caused by the difference between the cutting resistance of the stylus 5 and the sliding resistance of the stylus 4. Deformation of the copying table 6 due to changes in acceleration can be suppressed.

Therefore, by reducing the weight of the copying table 6, the inertia of the reciprocating swing motion of the copying table 6 when the copying model 1 rotates at high speed can be reduced, and the followability of the stylus 4 can be improved. It is also possible to suppress the deterioration of the copying characteristics caused by the deformation of No. 6, so that copying can be performed at high speed and with high precision.

Further, in FIG. 3, 13 is a piping panel, 14 is a handle for operating the tail stock 3, 15 is a manual oil supply lever, and 16 is a starting lever.

The vertical direction of the second plate 12b and the lateral direction of the third plate 12c constituting the core material 12 are based on FIG. 1 and FIG. The stand 6 can be freely mounted not only in an upward position as in the above-mentioned embodiments, but also in a horizontal position or a downward position.

Next, another example will be described.

(a) The core material 12 may be configured so that both ends thereof are inserted into the mounting portions 6B, 6B of the copying table 6.

(b) In the above embodiment, the three types of plates constituting the core material 12 were assembled by welding, but they may be integrally manufactured by casting.

(c) In the above embodiment, the core material 12 is made of steel, but it is not limited to this material, and may be made of, for example, sintered alloy or cast iron. The base body 6A and the mounting parts 6B, 6B may also be made of a light metal other than aluminum alloy, such as aluminum or zinc alloy.

(d) In the above-described embodiment, the mounting portion 6B of the copying table 6 is constructed from a pair of left and right mounting portions, but instead of this, it may be constructed from a single mounting portion that is wide in the direction of the swing axis. , or may be implemented by configuring three or more.

(e) The shape, size, and way of attaching the plates to each other can be changed as appropriate, and plates other than those described in the above embodiments may be added. May be implemented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of a copying table, FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIG. 3 is a front view of the entire copying lathe, and FIG. FIG. 5 is a plan view of the main part, and FIG. 6 is a front view of the main part. 1... Copying model, 4... Stylus, 5... Cutting tool, A... Base body, 6b... Mounting part, 1
2... Core material, 12a... First core material part, 12b, 1
2c...Second core material part.

Claims (1)

[Claims for Utility Model Registration] At the bottom of the base body, which is provided with an attachment part for a stylus and a cutting tool that come into contact with the copying model, a mounting part that supports the base body so as to be able to swing in the direction of distance relative to the copying model. In a cutting profiling stand in which the stand main body and the mounting part are made of a light metal, a core material made of a metal material having higher rigidity than the constituent metal of the stand main body and the mounting part is embedded in the stand main body. At the same time, the core material is connected to a first core portion disposed substantially along the swinging direction of the base body and a second core material portion disposed substantially along the swing axis direction of the base body. A copying stand for cutting configured by The copying table for cutting according to claim 1, wherein a pair of the mounting portions are arranged at positions corresponding to the lower part of the second core portion of the core material.