JPH03196946A - Setting method for work material in copying attachment - Google Patents

Abstract

PURPOSE:To perform the positioning of a work material in an easy manner by using the horizontal indication of a level installed in the work material and the specified indicated value of a dial gauge contacting with a master model at the time of copying a piston for an engine. CONSTITUTION:When a piston material (work material) 3 is held by a copying attachment provided with a holder 11 in a device body 10, first of all, a dial gauge 20 is held in a fitting hole 11a of this holder 11 in the state that its probe 20a comes into contact with a peripheral surface 2a of a master model 2 and operates in the vertical directions, while the master model 2 is rotated around the center axis A. Next, a level is inserted into a pin hole 3b of the piston material 3, and this piston material 3 is held on an end of the master model 2 via a jig 8. At this time, this jig 8 is adjusted so as to make this level show its horizontality, and if the material 3 is rotated around the center axis A, a center axis of the pin hole 3b is set to horizontality and, what is more, the length direction of the master model and the center axis of the pin hole 3b can be orthogonally arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for setting a workpiece material in a copying machine that processes the workpiece material following the shape of a master model.

[Conventional technology]

FIG. 3 conceptually shows this type of profiling device, and exemplifies a piston outer diameter finishing device applied to a two-stroke engine. With this copy processing device,
Master model 2 and piston material (
The stylus 4 is in contact with the outer peripheral surface 2a of the master model 2, and the outer peripheral surface 3a of the piston material 3 is
The cutting tool 5 is in contact with the holder.

These stylus 4 and cutting tool 5 are arranged in directions (
The spindle 1 is held by a movement 6 which is disposed so as to be movable in the direction of arrow B in the figure, and is constantly pressed by a spring 7 via the movement 6 in a direction approaching the central axis A of the spindle 1. Note that the reference numeral 8 in the figure is a jig held at the end of the master model 2, and the piston material 3 is transferred to the master model 2 via this jig 8.
and the center 9.

In this copying processing device, a master model 2 and a piston material 3 held on the spindle 1 are transferred to the spindle 1.
The movement 6 is rotated around the central axis A of the spindle 1, and the relative feed in the direction along the central axis A of the spindle 1 (in the direction of arrow C in the figure) is applied between the movement 6, the master model 2, and the piston material 3. In addition, the stylus 4, which is constantly pressed against the master model 2 by the spring 7,
As the shape of the master model 2 changes, it is moved forward and backward in the direction of arrow B. When the stylus 4 is moved back and forth in the direction of arrow B, the movement is transmitted to the cutting tool 5 via the movement 6, and as the cutting tool 5 moves back and forth in the direction of arrow B, the master is attached to the outer peripheral surface 3a of the piston material 3. The peripheral surface shape of Model 2 will be reproduced.

[Problem to be solved by the invention]

By the way, as shown in FIG. 4, a piston applied to a general engine usually has an elliptical cross section with a major axis a and a minor axis a. Therefore, the cross section of the master model 2 employed in the copying apparatus is also configured to have the same elliptical shape.

On the other hand, as shown in FIG. 3, the piston material 3 to be subjected to outer diameter finishing has already been provided with a pin hole 3b into which a piston pin is fitted in the manufacturing stage before being held by the spindle 1. There are many cases.

The positions of the pin hole 3b in which the piston pin IXfi and the above-mentioned elliptical cross-sectional shape are specified with respect to each other for functional reasons. That is, in a piston applied to an engine, as shown in FIG. 4, the direction of the major axis a of the ellipse in the cross-sectional shape and the central axis P of the pin hole 3b into which the piston pin is fitted are arranged so as to be substantially perpendicular to each other. must be maintained.

Therefore, when adding the outer diameter of the piston using the copying device, the pin hole into which the piston pin is fitted is formed in the direction of the major axis a of the ellipse in the master model 2 held on the spindle 1. The piston key 3 must be held by the master model 2 in a state in which the II center axis P of 3b is perpendicular to the master model 2, that is, the piston key 3 is positioned around the center axis A with respect to the master model 2. The setting work is extremely complicated.

In view of the above-mentioned circumstances, an object of the present invention is to provide a method for setting a workpiece material in a copying machine, which allows easy positioning of the workpiece element 4 around the central axis with respect to the master model.

[Means for resolving issues]

In the present invention, a master model, which has a cross-sectional shape H with a plurality of radii of different lengths relative to the central axis and is held on a spindle of a copying processing device, is positioned around the central axis. A method of setting a work piece in a profiling machine that holds a work material in a state in which a dial gauge that is operated along the circumferential shape of the master model is brought into contact with the circumferential surface of the master model, and A spirit level is installed along the radial direction of the work material, and the work material is held in the master model based on the indicated values of the spirit level and the dial gauge.

[Effect]

According to the present invention, the position of the workpiece material around the central axis is specified by the spirit level installed on the workpiece material indicating horizontality, and the dial gauge in contact with the peripheral surface of the master model is set to a specific indicated value. By indicating this, the position of this master model around the central axis is specified.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail based on drawings showing embodiments.

FIG. 1 conceptually shows a method for setting a work material according to the present invention, and exemplifies the method applied to an apparatus for finishing the outer diameter of a piston for a two-stroke engine.

Note that the same components as those of the copying device shown in FIG. 3 are given the same reference numerals.

The copying device shown in the figure has a holder 1 in the device main body 1o.
1. The holder 11 has a fitting hole 1.1a at its tip, and as shown in FIG. It is removably held in the device main body 1o via bolts 12 while being located in the vertically upper area of the device.

Note that the reference numeral 13 in FIG. 2 is a knock pin that is embedded in the main body 1o of the apparatus and positions the main body 10 of the apparatus and the holder 11.

The piston material (
In order to hold the workpiece material 3, first, as shown in FIG. , and is held in such a manner that it operates vertically up and down, and rotates the master model 2 around the central axis A via the spindle 1.

When the master model 2 rotates around the central axis A, the dial gauge 20 is operated according to the circumferential shape of the ellipse, and if the spindle 1 is stopped at the position where the dial gauge 2o shows the maximum value, the above-mentioned The master model 2 can be set in such a manner that its major axis a (shown in FIG. 4) is directed vertically upward and downward.

Next, as shown in FIG.
Insert and install the above spindle 1 while keeping it stopped.
This piston material 3 is held at the end of the master model 2 via a jig 8. The test par (level) 30 is
Rod-shaped portion 3 that is inserted into the pin hole 3b of the piston material 3
1 and a bubble tube 32 disposed at the end of the rod-shaped portion 31, and the rod-shaped portion 31 is leveled by the position of the bubble 33 of the bubble tube 32.

If the jig 8 is adjusted and the piston material 3 is rotated around the center axis A so that the test par 30 is horizontal, the center of the pin hole 3b in which the piston pin of the piston material 3 is fitted is adjusted. The axis P (shown in FIG. 4) can be set horizontally, and as a result, the direction of the major axis a of the master model 2 and the central axis P of the pin hole 3b can be arranged orthogonal to each other.

Therefore, the master model 2 and the piston material 3 held on the spindle 1 as described above are rotated around the central axis A of the spindle 1, and the movement 6 is further interposed between the master model 2 and the piston material 3. Direction along central axis A of spindle 1 (arrow C in the figure)
direction), the above piston material 3
The outer circumferential surface 3a of the pin hole 3b is cut by the movement of the cutting tool 5 in conjunction with the movement of the stylus 4, and is machined into an elliptical shape in which the major axis a and the central axis A of the pin hole 3b are substantially orthogonal to each other, as shown in FIG. becomes.

In the above embodiment, an elliptical master model 2 whose cross section has a major axis a and a minor axis H is used, and the shape of the outer circumferential surface of this master model 2 is reproduced on the circumferential surface 3a of the workpiece material 3. Although an example is shown in which the present invention is applied to a profiling device that finishes the outer diameter of a piston for a cycle engine, the present invention is not limited thereto. That is, the cross-sectional shape does not necessarily have to be an ellipse as long as it has a plurality of radii of different lengths with respect to the central axis, and it does not necessarily have to be a piston for a two-stroke engine.

〔Effect of the invention〕

As described above, according to the present invention, the level installed on the workpiece material indicates horizontality, so that the position around the central axis of the workpiece material can be specified, and the dial gauge that is in contact with the circumferential surface of the master model By indicating a specific instruction value, the position of this master model around the central axis is specified.

Therefore, by matching the specific position of the work material and the specific position of the master model, the work material can be accurately positioned around the central axis relative to the master model.
And it can be done easily.

[Brief explanation of drawings]

FIG. 1 is a side view of a copying machine conceptually showing a method of setting a workpiece according to the present invention, and FIG. 2 is a top view of the copying machine conceptually showing a method of setting a workpiece according to the present invention. Fig. 3 is a side view conceptually showing the machining state of the workpiece material in the copying processing device, and Fig. 4 is an end view conceptually showing an example of the workpiece material set in the copying processing device. be. 1...Spindle, 2...Master model, 2a...
・Surrounding surface of master model, 3...Work material, 20...
・Dial gauge, 30...Level, A...Central axis, a, b...Multiple radii with different lengths. Figure 1

Claims (1)

[Claims] The workpiece material is held in a master model that has a cross-sectional shape with multiple radii of different lengths relative to the central axis, and is held in the spindle of the copying processing device while being positioned around the central axis. A method for setting a workpiece material in a copying processing device, in which a dial gauge that is operated along the circumferential shape of the master model is brought into contact with the circumferential surface of the master model, and a dial gauge is set on the workpiece material along its radial direction. 1. A method for setting a workpiece material in a copying processing apparatus, characterized in that a spirit level is installed in the master model, and the workpiece material is held in the master model based on the indicated values of the spirit level and the dial gauge.