JPH04240023A - Electrolytic buff composite polishing device - Google Patents

Abstract

PURPOSE:To execute an electrolytic buff polishing uniformly on the angular part, corner part of a long sized material to be polished over the whole length in the longitudinal direction of the material thereof. CONSTITUTION:A polishing body 3 pressed to the curved face 2 of the material 1 to be polished is equipped, a pressing device 29 adjusting the pressing force of this polishing body 3 is equipped. A feeder device 15 making the polishing body 3 as a cathode and the material 1 to be polished as an anode is equipped, and the polishing body 3 is rotated with an electrolyte being filled up in the polishing face gap from a hole 7 with turning on electricity thereto.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic buffing composite polishing apparatus.

0002

2. Description of the Related Art An electrolytic buff composite polishing apparatus which polishes by rotating a polishing body while sending an electrolyte to a polishing surface has been proposed as a precision polishing apparatus in Japanese Patent Laid-Open No. 127827/1983.

0003

However, in the conventional technique described above, since the material to be polished is rotated, it is difficult to polish the material if it has a curved surface in the longitudinal direction of the material. Furthermore, since the material to be polished is rotated, if the material is long, center runout may occur due to rotation, which poses a problem in terms of finishing accuracy.

The present invention aims to solve these problems.

[0005]

[Means for Solving the Problems] The present invention takes the following technical means to achieve the above object in an apparatus for electrolytically buffing a material to be polished having a curved surface in a cross section perpendicular to the longitudinal direction. That is, the present invention includes a polishing body having a curved surface similar to the above-mentioned curved surface, a pressing device for pressing the polishing body against the material to be polished, and furthermore, the polishing body has holes for feeding an electrolyte to both of the curved surfaces. , comprising a power supply device that uses the material to be polished as an anode and the polishing body as a cathode, and a drive device that rotates the polishing body around an axis in a direction perpendicular to the longitudinal direction. be.

[0006]

[Operation] In the present invention having the above-described configuration, the pressing device 29 having the spring pressure adjusting device 20 and the counterbalance weight device 28 adjusts the pressing force of the polishing body 3, and the curved surface 5 to be polished is It is pressed against the curved surface 2 of the body 1, and an electrolytic solution is supplied from the hole 7.

When the polishing body 3 is rotated by a drive device to relatively move the material 1 to be polished in its longitudinal direction and the power supply device 15 is energized, the elution action of the anode due to electrolysis and the buffing action are combined. The curved surface 2 of the object 1 to be polished is compounded.
is finished to a mirror finish.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a material to be polished, which in this example is a square pipe, and is a quadrilateral having a curved surface 2 in a cross section perpendicular to the longitudinal direction. 3 is a polishing body, and one end of a drive shaft 4 is equipped with a circular roller. A curved surface 5 similar to the curved surface 2 is formed in the circumferential direction on the outer peripheral surface of this circular roller, and an abrasive material 6 made of non-woven fabric is adhered to the outer peripheral surface including this curved surface 5.

Further, in the circular roller, radially arranged holes 8 communicating with the through hole 7 formed at the axis of the drive shaft 4 are formed penetrating toward the curved surface 5, and the electrolytic solution is discharged from the holes 8. It is considered possible. The liquid supply device 9 includes an annular body 11 having an annular groove 10 that is fitted around the drive shaft 4. The contact surface between the annular body 11 and the drive shaft 4 is sealed with a seal ring 12, and the annular groove 8 The through hole 7 and the liquid supply pipe 13 are communicated with each other.

The drive shaft 4 is supported on the polishing head 14 by a bearing (not shown) and is connected to a motor so as to rotate around this axis.
is driven around an axis perpendicular to the longitudinal direction of the Furthermore,
The drive shaft 4 is equipped with a power supply device 15, and is brought into contact with a DC power source so that the material to be polished 1 serves as an anode and the polishing body 3 serves as a cathode.

The polishing head 14 is supported by a horizontal guide rod 17 provided on the movable head 16.
is movable up and down along the vertical guide rod 19 of the main body 18, and is connected to the main body 18 and the movable head 16 by a spring pressure adjustment device 20. The spring pressure adjustment device 20 includes a screw shaft 22 supported by a bracket 21 of the main body 18, a coil-shaped spring 23 fitted onto the screw shaft 22, and a nut 24 screwed onto the screw shaft 22. nut 2
The movable head 16 is adjusted by adjusting the elastic force of the spring 23 by turning 4.
It is possible to apply a pressing force to the polishing body 3 via, etc.

Furthermore, the wire 2 connected to the movable head 16
5, a guide sheave 26 of the wire 25, and a counterbalance weight device 28 consisting of a weight 27 provided at the other end of the wire 25, and this weight device 28 and the spring pressure adjustment device 20 are used to adjust the polishing object to the object to be polished 1. This is the pressing device 29 in which the pressing force of No. 3 is adjusted. Note that 30 indicates a cover.

Next, the operation of the apparatus will be described. The apparatus is set with the curved surface 5 of the polishing body 3 facing the curved surface 2 of the material 1 to be polished. In this case, in order to optimize the abrasion removal effect on the curved surface 2 of the abrasive material 6 in the abrasive body 3, the nut 2
to adjust the pressing force by the pressing device 29. Furthermore, the processed electrolyte is supplied to the annular groove 10 from the liquid supply device 9.
, is supplied to the hole 8 through the through hole 7 to fill the gap between the curved surfaces 2 and 5 with an electrolytic solution, and a DC current is applied via the power supply device 15 so that the polishing body 3 serves as a cathode and the polished body 1 serves as an anode. The polishing body 3 is rotated by supplying power and driving the drive shaft 4.

[0014] Thereby, the curved surface 2 can be finished into a mirror surface by combining the elution action of the anode by electrolysis and the buffing action. Therefore, by relatively moving the material to be polished 1 and the polishing body 3 in the longitudinal direction of the material, the curved surface 2 can be finished into a mirror surface without rotating the material to be polished 1 about its center. Note that by setting the material 1 to be polished in combination with this device for finishing the curved surface 2 and the polishing device proposed in JP-A-63-127827, for example, the flat surface 2A as well as the curved surface 2 can be polished to a mirror finish. Can be finished.

Furthermore, by setting this apparatus as shown in FIG. 4, it is possible to finish the curved surface 2 of the material to be polished 1 at the same time. Note that the workpiece 1 to be polished is not only a square pipe material, but also a solid material as long as it has a polygonal shape such as a triangle or a pentagon.

[0016]

Effects of the Invention The present invention provides an apparatus for electrolytically buffing a material to be polished having a curved surface in a cross section perpendicular to the longitudinal direction, which comprises a polishing body having a curved surface similar to the curved surface, and the polishing body is applied to the material to be polished. The polishing body is further provided with a pressing device for pressing the polishing body, the polishing body is provided with a hole for feeding an electrolytic solution to both the curved surfaces, the polishing body is further provided with a power supply device that uses the material to be polished as an anode and the polishing body as a cathode, and the polishing body is moved in the longitudinal direction. Since it is equipped with a drive device that rotates around the axis in a direction perpendicular to the machine, it is possible to reliably perform electrolytic compound polishing on the corners and corners of the material to be polished, without rotating the material to be polished. Since the polishing body is rotated, there is little center runout due to rotation, and high-speed rotation is possible, allowing uniform electrolytic composite polishing to be performed over the entire length of the material in the longitudinal direction.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the device of the present invention.

FIG. 2 is a sectional view showing essential parts of the device of the present invention.

FIG. 3 is a side view of the device of the present invention.

FIG. 4 is a front view showing another example of the device of the present invention.

[Explanation of symbols]

1 Material to be polished 2 Curved surface 3. Polishing body 5 Curved surface 7 holes 9 Liquid supply device 15 Power supply device 29 Pressing device

Claims (1)

[Claims] 1. An apparatus for electrolytically buffing a material to be polished having a curved surface in a cross section perpendicular to the longitudinal direction, comprising a polishing body having a curved surface similar to the curved surface, and a pressing device for pressing the polishing body against the material to be polished. The polishing body is further provided with holes for feeding an electrolytic solution to both curved surfaces, and further includes a power supply device that uses the material to be polished as an anode and the polishing body as a cathode, and the polishing body is provided with a power supply device in a direction perpendicular to the longitudinal direction. An electrolytic buffing composite polishing device characterized by being equipped with a drive device that rotates around an axis.