JPS5997831A - Grinding method of double head surface grinder - Google Patents

Abstract

PURPOSE:To improve machining accuracy and efficiency by reciprocating while rotating a workpiece when grinding it on a double head surface grinder. CONSTITUTION:A workpiece W is supported by a fixing jig 4 on an indexingly rotatable carrier plate 3, and is indexed and positioned in the grinding position between grinding wheels 1, 2. The carrier plate 3 is made to reciprocate within a plane perpendicular to a shaft 5 and the fixing jig 4 is rotated by means of a motor 10, through a universal joint 11, and with gears 7, 8. Thereby, the workpiece W is ground while being rotated and reciprocated, improving machining accuracy and efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a grinding method in a double-head surface grinder.

The above-mentioned double-head surface grinder is configured such that one grinding wheel is arranged with its grinding surfaces facing each other, a workpiece is indexed between the grinding surfaces of both grinding wheels, and both surfaces of the workpiece are simultaneously ground by both grinding wheels. This is what I did.

This FJA improves the grinding method used in this type of double-head surface grinder, and by giving the workpiece oscillation motion and rotational motion at the same time, it is possible to finish the workpiece with high precision and efficiency. It is characterized by

The invention and its configuration will be explained below with reference to the drawings.

In the embodiment of this invention shown in the drawings, (1) and
□ and (2) are grindstones arranged one above the other with their grinding surfaces facing each other, and are supported by a device f7 frame (not shown) and rotated by a dog motor.

Then, the upper grindstone (1) is moved up and down along with its rotation axis.
It is possible to freely adjust the distance between the grinding surface and the lower grinding wheel (2) by 18%.

(3) is a disk-shaped carrier plate that indexes the workpiece (G) between both grinding wheels +11121, and the holding jig i41 for chunking the workpiece (G) is placed at two locations that are equally spaced on the circumference. It is installed so that it can rotate freely. (
5) is the rotating shaft of the carrier plate (3), which is connected to the index drive motor (
(not shown), and drives an index drive motor to rotate the carrier plate (3) intermittently. Although not shown in the figure, the rotation 1llllIl (5) is supported by the device frame so as to be slidable in the direction of the arrow in the figure, and is connected to an oscillation drive motor via an oscillation mechanism (not shown) using an eccentric cam or the like. By driving the oscillation drive motor, the carrier plate (3) is oscillated through the rotating shaft (5). (61 is the carrier plate (
3) A small gear (7) is integrally fixed to the lower end of a drive shaft rotatably installed on the top, and the small 1M wheel (7) is fixed to the fixed base A.
It is constantly meshed with a large gear 18) integrally formed on the outer periphery of l41. (9) is a drive unit that rotationally drives the drive shaft 16), and for example, the drive shaft 16) is connected to the drive motor fixed to the device frame via a universal joint (It).
Connect the shaft (6) and drive motor tlQl 't-
[When tilted, the drive shaft (6) is rotated through the unipurple joint (1), and the small gear (7) and large prisoner wheel (
8), the fixing jig (4) rotates to fix the fixing surface Af4.
In the above configuration for rotating the workpiece chucked in the carrier plate (3), the fixing jig (4) is first rotated.
With the workpiece (g) chucked in 1, rotate the rotating shaft (
5) Intermittently rotate the workpiece (g) to the grindstone ill F21
index in between. Next, the oscillation drive motor is driven to reciprocate the carrier plate 13) in the direction of the arrow in the figure to provide oscillation motion to the workpiece (to), and at the same time, the drive motor 5 (9) is driven by IK movement. shaft(
6) is rotated, and the fixed base) 4 (41) is rotated via the small gear (7) and large gear 18) to impart rotational motion to the workpiece (Wl).

As explained above, in this invention, since the workpiece (A) is given rotational motion while being given oscillation motion, it is possible to increase the amount of grinding and grind the workpiece with high precision and efficiency. This is a grinding method that can achieve excellent performance in this type of double-head surface grinder.

[Brief explanation of drawings]

The drawing is a schematic drawing showing an embodiment of a device to which the grinding method for a double-head surface grinder of the present invention is applied. (G) - Workpiece, flH21... Grindstone, (3)... Carrier play), +41, e fixing jig, (61, Φ rotating shaft, (6), II drive shaft, (7)... Small gear ,(8)・
・Large gear, (9)... Drive unit, shout e-draig motor%
(o) @as universal joint. Patent applicant: Nissin Kogyo Co., Ltd. Representative: Shogo Ebara
Hide Ehara (5)

Claims (1)

[Claims] In a double-head surface grinder, two grinding wheels are arranged with their grinding surfaces facing each other, a workpiece is indexed between the grinding surfaces of both grinding wheels, and both sides of the workpiece are simultaneously ground by both grinding wheels. A fixing jig for chucking the workpiece is rotatably installed on the carrier plate, and 1
A small gear is mounted on the carrier plate and is constantly meshed with a large gear integrally formed on the outer peripheral surface of the fixing jig, and the small gear is connected to a drive device that does not interfere with the oscillation movement of the carrier plate. A method for grinding in a double-head surface grinder, characterized in that rotational motion is given to the workpiece while giving oscillation motion to the workpiece.