JP3103960B2 - Equipment for surface grinding operations - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface grinding apparatus for grinding the surface of a workpiece, for example, a punch or a die of a punching tool. It is a method that can complete the work.

[0002]

2. Description of the Related Art When grinding the surface of a workpiece, the grinding wheel is gently applied to the surface of the workpiece to visually confirm that it has reached 0, and the cutting amount is set by a handle, or the grinding is performed. Inserts a spacer, decides the position, and performs with constant cam feed, but requires some skill and long working time

[0003]

In order to enable even unskilled persons to easily grind, it is necessary to automatically grasp the dimension where the grinding wheel surface is in contact with the surface of the workpiece, and to further rapidly approach and minute grinding feed. The purpose is to allow the amount to be freely selected, and to quickly return to the original position after the completion of grinding to increase work efficiency.

[0004]

Means for Solving the Problems In order to solve this problem, according to the present invention, a positioning plate adjusted to a specified size from a grindstone surface is always present on an attached workpiece, and the positioning plate is manually operated by a guide bar and a guide. The specified dimensions are grasped in a state where the plate is pulled down until it comes into contact with the surface of the workpiece. Further, a mechanism for quickly approaching the positioning plate with a lifting mechanism to reach a position at which the grinding wheel grinds the workpiece, and a differential gear mechanism for realizing stepless minute feed of grinding are adopted.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a whetstone 1 directly connected to a motor 12 is provided on a whetstone base 11 supported by two guide bars 13 and guides 15 attached to a base 19, As a device for determining the distance between the object 3 and the grindstone 1 to a specified distance, a cylinder 8 held by a guide bar 5 and a guide block 6 and capable of operating vertically and a holder 9 for supporting the cylinder 8 are provided. A return spring 10 for securing the position regulated by the adjustable screw 7 so that the plate 2 always has the specified size and returning to the original specified size at the end of the work.
It is equipped with. Further, the grinding wheel 1 held on the grinding wheel base 11
The cylinder 2 is operated by hydraulic pressure to tighten the draw bar 16 to the grinding wheel base 11 to perform the approach feed and the grinding feed accurately and accurately, and is returned by an internal spring.
1 and a cylinder 2 having an adjusting screw 26 for accurately performing the approach feed to the draw bar 16.
5 and the slide guide 2 is provided by the cylinder 25.
2. The feed device 18 held on the slide block 23 moving on the upper side is lowered for the specified amount of approach feed,
The grinding feed is performed by the inverter motor 24 at the same time when the grinding wheel 1 comes into contact with the workpiece 3. The motor is rotated by a worm 30, a worm wheel 31, and a gear 32 incorporated in a shaft 38, and a gear 33 incorporated in a screw 37. The nut 36 is rotated by a gear 35 incorporated in the nut 36 meshed with the screw 37. At this time, the combination of the gears 32 and 33,
The combination of the gears 34 and 35 is a combination in which one or several teeth are changed, and the nut 36 and the gear 3
The micro-feed required for grinding is performed on the draw bar 16 fixed by the thrust bearing 29 at 5. Further, the feed amount is determined by the rotation detector 27 provided on the shaft 38. For example, it is possible to confirm a minute feed such as 0.1 mm per rotation of the shaft 38. Rotation detector 2
When the numerical value designated by 7 is completed, the inverter motor 24 rapidly returns to the original state at the reverse rotation of 1000 Hz to 2000 Hz, the approach cylinder 25 is turned off by the hydraulic pressure, rises by the strong spring inside, and returns to the original state to finish the work.

[0006]

[Effect of the Invention] In the grinding operation, the grinding wheel rotates at a high speed, and the material of the grinding wheel is hard and brittle.
The conventional method such as wrong selection of dimensions may destroy the grindstone and cause danger. However, according to the present invention, there is no such a thing, and even an unskilled person can work safely and efficiently. .

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of the apparatus.

FIG. 2 is a side view, partially broken away, of the above device.

FIG. 3 is an enlarged side view of the feeding device 18.

FIG. 4 is a sectional view of the above device.

FIG. 5 is a hydraulic piping diagram of the present apparatus.

[Explanation of symbols]

1──── Whetstone 2──── Positioning plate 3──── Workpiece 4──── Turntable 5──── Guide bar 6──── Guide block 7──── Adjustment screw 8─引 き 上 げ Lifting cylinder 9 ──── Holder 10 ──── Return spring 11 ──── Wheel head 12 台 Wheel motor 13 ──── Guide bar 14 タ イ ト Tight bar 15 ──── Guide 16──── Drawbar 17──── Air spring 18──── Feeder 19──── Base 20──── Frame 21──── Cylinder 22──── Slide guide 23─── ─ Slide block 24──── Inverter motor 25──── Cylinder 26──── Adjustment screw 27──── Rotation detector 28──── Stay 29──── Stearing 30──── Worm 31──── Worm wheel 32──── Gear 33──── Gear 34──── Gear 35──── Special gear 36──── Nut 37─── ─ Precision screw 38──── Shaft 39──── Fixing block

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B24B 47/20-47/22 B24B 7/04 B24B 47/12 B24B 47/16

Claims (2)

(57) [Claims] 1. A surface grinding device for grinding an upper surface of a workpiece 3 fixed to a turntable 4 rotatable by a motor, wherein the motor 12 rotates a grinding wheel 1.
In a device in which the grindstone table 11 for holding the workpiece is neutrally held by the air spring 17 and the guide 15 can be manually moved up and down on the guide bar 13, a positioning plate for determining the distance between the grindstone 1 and the workpiece 3. 2 is held by a guide block 6 and a guide bar 5 so as to be movable up and down, and the lower surface of the grindstone 1 and the lower surface of the positioning plate 2 have a screw 7 which can be adjusted to a specified length. The approach dimension can be automatically set by lowering the table 11, and the positioning plate 2 can be set before the grinding wheel 1 starts grinding.
8 for lifting the wheel above the lower surface of the whetstone 1
And the grinding bar 11 is given a grinding feed by means of a device 18 which simultaneously secures the draw bar 16 by the cylinder 21 and provides a reliable feed of a specified length and enables a fine feed. Surface grinding equipment 2. A surface grinding apparatus for providing a minute grinding feed in a surface grinding operation.
When the positioning plate (2) comes in contact with the workpiece (3), the pressure of the fluid acts on the positioning plate (2) to raise the positioning plate (2) when the positioning plate (2) comes into contact with the workpiece (3).
1) Cylinder (2) to tighten drawbar (16)
1) and a slide block (2) on a slide guide (22) fixed to a frame (20) and a stay (28).
An approach cylinder (25) adjusted by a screw (26) to a length before movement of the grindstone (1) and the positioning plate (2) for pulling down a feeder (18) fastened to 3), and a drawbar ( 16) Use a grinding wheel head (1
1) After the grindstone (1) rotating by the upper motor (12) approaches the workpiece (3) and the rotating grindstone (1) stops on the surface of the workpiece (3), feed is performed. The worm (30) and the worm wheel (31) are driven by the motor (24) and two gears (32) having the same number of teeth
By rotating the precision screw (37) by (33), two gears (34) and (35) having different numbers of teeth provided on the upper part coaxially with the gears (32) and (33), and the gear pair Nut (36) meshing with precision screw (37)
, And the thrust bearing (29) is moved by the axial movement of the nut (36) to drawbar (1).
6) Means for enabling fine grinding feed to the grindstone (1) of the grindstone stand (11) fixed to 6), and a rotation detector attached to a shaft (38) for continuously determining the grinding amount. Surface grinding equipment.