JPS5866650A - Profile polishing machine for watch case and the like - Google Patents

Abstract

PURPOSE:To automatically perform abrasive work of a watch case and the like, by both providing a work rotary feed setter block in a work shaft on a copying slide and providing a rotary speed setter switch of an abrasive material in a cutting slide side where the abrasive material is mounted. CONSTITUTION:Wearing of an abrasive material 1 decreases its diameter, and the wearing is detected by a rotary speed setter microswitch 3, in which a protrusive stripe, for instance, changed with length into three stages, provided in the side of a cutting slide 5, is detected, then a rotary speed of a motor 2 for driving the abrasive material 1 is controlled. A copying slide 9, provided to a work chuck 10, is moved by a cam follower 13, fixed onto a work feed slide 15, and a cam 11, provided on the slide 9, and rotary speed of a work shaft is controlled by a work rotary speed setter block 21, provided to the work shaft, and a switch 23 on the slide 15.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an automatic polishing machine that performs polishing by copying operation using a grinder.

Conventionally, deformed watch cases and the like have been polished by manually touching a workpiece placed on a surface plate against a rotating mochi material. This method requires considerable skill because it is manual work, and is extremely inefficient because one person can only operate one machine.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a copying and polishing machine for watch cases, etc., which is capable of mechanically and efficiently carrying out such work, and which also allows a person to manage and operate several machines.

The present invention makes it possible to rotate the work shaft at a variable speed by placing a chuck on a copying slide that converts changes in the shape of the cam into linear motion, and by attaching a work rotation speed setting block, which is a proximity switch, to the work shaft. A watch case, etc., characterized by installing a rotation speed setting microswitch that operates as the mochi material decreases, and adjusting the circumferential speed of the mochi material by the signal from the microswitch. The drawings show a preferred embodiment of the polishing machine. In the figure, reference numeral 1 denotes a mochi material which is rotationally driven by a motor 2, and care is taken so that the circumferential speed of the mochi material during its rotation is automatically converted from normal I to appropriate. In other words, when the diameter of the mochi material 1 is human, the circumferential speed is fast, so the number of revolutions is reduced, and when the diameter becomes smaller due to the reduction of the number of mochi materials 1, the circumferential speed is slow (so the number of revolutions is increased). There is.

The micro switch 3 for setting the rotation speed of the rice cake material plays this role. This rotation speed setting micro switch 3 has
For example, an actuating body 4 having protrusions with different lengths in three stages and moving together with the mochi material 1 is attached, and one of the protrusions 4a is adjusted according to the weight loss of the mochi material 1. While moving forward, a switch is activated, and the switch sends a predetermined rotation speed setting signal to adjust the rotation speed of the motor 2 in stages. Reference numeral 5 denotes a cutting slide that moves forward according to the weight loss of the rice cake material 1. Reference numeral 6 denotes a dresser, which not only performs the original dressing function but also serves to keep the outer diameter of the rice cake material 1 and the relative position of the workpiece constant.

In this dresser 6, the number of workpieces to be processed is set in advance, and dressing is automatically performed for each set value. 7 is a dresser unit; 8 is a dresser position microsinch for controlling the position of the dresser unit 7; Reference numeral 9 is a copying slide on which a floating chuck 10 is placed and fixed, and a cam 11 that captures a workpiece of a desired shape is shown.
Converts the change in shape into linear motion. 12 is a copying weight connected to the copying slide 9, which constantly pulls the copying slide 9,
The cam 11 integrated with the copying slide 9 is thereby brought into contact with the cam follower 13. The cam follower 13 is fixed to a workpiece feed slide 15 located on a workpiece position adjustment slide 14 . The workpiece position adjustment slide 14 is a slide for adjusting the front and back position of the workpiece by turning the adjustment handle 16, and the workpiece feed slide 15 is a feed slide for bringing the workpiece into contact with the rice cake material 1, and is used to move the step cylinder j7. operates through At this time, it is desirable to adopt a two-step cutting method using the step cylinder 17 in order to prevent biting when the tool comes into contact with the tool. Reference numeral 18 denotes an adjustment dock attached to the side wall of the workpiece feed slide 15, which is used to gradually reduce the forward speed of the workpiece feed slide 15 in order to smoothly bring the workpiece into contact with the abrasive material IK when the workpiece feed slide 15 advances. It is something. That is, a flow control valve 19 having a retractable roller that protrudes inward (toward the workpiece feed slide 15 side) is installed on the workpiece position adjustment slide 14, and the adjustment dock 18 moves forward together with the workpiece feeder slide 15 to move the roller. The workpiece feed slide 15 is restrained from moving forward by pressing the workpiece feed slide 15 and retracting the workpiece feed slide 15 by adjusting the hydraulic pressure. 20 is a speed control motor for rotating the work shaft,
Variable speed. 21 This is a workpiece rotation speed setting block that rotates with the Howark axis. It is an angle block (proximity switch) that has transmitters in several places, and it sends a signal to the sensor B placed inside the sensor mounting part #blade hanging from the copying slide 9. send. Accordingly, the sensor controls the rotation speed of the speed control motor. The reason for adjusting the rotational speed of the workpiece shaft in this way is to enable adjustment of the machining allowance for a portion of the corner of the workpiece (particularly a square type). In other words, when grinding a part of a corner, the speed is increased to prevent that part from being rounded off.The number of revolutions of this work shaft is determined in advance, and the number of revolutions is reached. It is preferable to set the polishing so that it automatically finishes polishing.This will ensure stable quality.U is a tilting handle for tilting the notch slide 5 (upward to the left in Fig. 2); is a tilt lock nut for locking after tilting.

The reason why the cutting slide 5 is inclined as shown in 2 is to change the cutting angle of the rice cake material 1 with respect to the workpiece. 26
1 is a swinging slide for swinging the rice cake material 1 (in the left-right direction in FIG. 1), which is driven by a swing motor n, and its operation enables the use of the entire width of the rice cake material 1. The gun is a vertical slide that adjusts the vertical height of the rice cake material 1, and is operated using a vertical feed handle 29. Additionally, there is a vertical slide clamp lever that locks the vertical slide. 31 is an operation panel, a lever pump that supplies lubricating oil to each slide, 33 is a hydraulic oil tank, and 34 is a hydraulic pump that is a pressure source for the hydraulic oil.

To describe the operation of the polishing machine according to the present invention, first, the rotational speed of the workpiece is set, and after the rotational speed has elapsed, the cutting slide 5 retreats and the polishing is completed. - The number of workpieces to be processed is set in the ten thousand dresser setting counter, and dressing is performed by the dresser 6 every time the number of workpieces is processed. The height of the rice cake material 1 is adjusted by turning the vertical feed handle 4 and moving the vertical slider, and during polishing, the mochi material 1 is reciprocated left and right by the swinging slide base. When the mochi material 1 decreases and the actuating body 4 moves forward together with the mochi material 1, the protrusion 44a activates the rotation speed setting micro switch 3 in several stages, so that as the mochi material 1 decreases and the diameter becomes smaller, the rotation speed increases. Speed is increased. To tilt the cutting slide 5, the tilting handle 24 can be turned. On the other hand, the position of the workpiece is set by turning the adjustment handle 16 to move the workpiece position adjustment slide 14, and by moving the workpiece feed slide 15 via the step cylinder 17. At this time, due to the action of the adjustment dock 18 and the flow control valve 19, when the workpiece comes into contact with the rice cake material 1, the forward speed of the workpiece is gradually reduced, so that the workpiece comes into contact smoothly. Changes in the shape of the cam 11 are converted into linear motion by the copying slide 9, causing the workpiece to move forward and backward. Since the copying weight 12 is attached to the copying slide 9, cam copying is carried out reliably. In order to prevent the corners from becoming rounded in the case of a rectangular watch case, the speed control motor is rotated at a variable speed by the action of the work rotation speed setting block 21 and sensor O, and rotates at high speed when grinding the corners. .

Since the present invention is as described above, polishing of deformed watch cases, etc., which was conventionally done manually, can be done mechanically and efficiently.Furthermore, it is possible to operate the machine even if the machine is turned over by a person. It has the effect of improving the quality and stability of the product.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a side view thereof. Explanation of symbols 1... Mochi material, 3... Micro switch, 5... Cutting slide, 6... Dresser, 9... Copying slide, 10... Floating chuck, 11... Cam , 14... Work position adjustment slide, 15.
...Work feed slide, 17...Step cylinder, Machining...Speed control motor, 26...
Oscillating slide patent applicant Hayashi Sayaki Manufacturing Co., Ltd. Patent attorney Haru Saito Pa i'%...
H.J.

Claims (5)

[Claims] (1) A chuck is placed on the profiling slide that converts changes in the shape of the cam into linear motion, and a workpiece rotation speed setting block, which is a proximity switch, is attached to the workpiece shaft to enable the workpiece shaft to rotate at variable speeds. We installed a rotation speed setting microswitch that operates as the amount of mochi material decreases.
A polishing machine for copying and polishing watch cases, etc., characterized in that the peripheral speed of the mochi material can be adjusted by signals from the microswitch. (2) A copying and polishing machine for watch cases, etc., as set forth in claim 1, characterized in that the machine is equipped with a dresser that operates according to the amount of rice cake material reduced. (3) A copy polishing machine for watch cases, etc., as set forth in claim 1 or 2, wherein the polishing time is set based on the rotational speed of the workpiece. (4) Copy polishing of watch cases, etc., as described in item 1, item 2, or item 3, characterized in that the work feed slide is provided with a step cylinder so that the cut is made in two stages. Machine. (5) Install the adjustment dock on the side wall of the workpiece feed slide, and place it on the workpiece position adjustment slide.
A flow control valve having an inwardly protruding and retractable roller is disposed, and the roller is retracted as the adjustment dock moves, thereby suppressing the forward movement of the workpiece feed slide. A copying and polishing machine for watch cases, etc., as described in item 1, 2, 3, or 4.