JPS5815090Y2 - Chip-fitting polishing plate - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chip-fitting polishing plate mainly suitable for stone polishing, and has the following features: making it easy to replace and remove grinding wheel tips, reducing running costs for polishing plate users,
The purpose is to simplify transportation and packing.

Conventional stone polishing plates generally have a chip 5 made of a resin or alloy chip base 3 and a diamond chip 4 attached to the back surface 2 of a circular resin or cast substrate 1 with adhesive, as shown in Fig. 1. There is.

However, in this case, when the diamond chips 4 wear out, the substrate 1 must also be discarded, and even if some of the chips are damaged, it is difficult for the user to repair them at hand.

In addition, transportation and packing are time consuming, causing an increase in running costs for users.

As a countermeasure against this problem, conventionally, as shown in FIG.
Leave the hole open and insert the bolt 7 passed through this hole into the chip stand 3'.
It has already been proposed to fasten the chip 5' to the substrate 1' by screwing it into a screw hole 8 provided in the board.

Here, 4' is a diamond chip. However, in that case, a large number of chips 5' are each connected to at least two bolts 7.
This requires a lot of effort, and some tips tend to come loose.

Also, since the chip 5' is simply pressed against the back surface 2' of the substrate,
If the chip 5/ receives a lateral thrust or impact from the surface of the stone during the polishing operation, looseness is likely to occur in various parts.

This invention attempts to avoid the above-mentioned conventional problems.
A plurality of chip insertion holes are provided on the back surface of the substrate having the rotational force introduction part, and the base end of a grinding wheel chip having an outward flange at the base end is fitted into each chip insertion hole, and the base end of the grinding wheel chip is inserted into each chip insertion hole in the rotational direction and radial direction of the substrate. At the same time, a plurality of chip insertion holes with a diameter smaller than the above-mentioned flanges provided on the presser plate are fitted into the grinding wheel chip body at corresponding positions from the tip side with a seven-lung housing, and the presser plate is secured with a plurality of bolts. It is characterized in that the grinding wheel chip is held in the direction of the central axis by being fastened to the substrate, and an embodiment thereof is shown in FIG. 3 and subsequent figures.

Figure 3 is a back view, Figures 4 and 5 are I of Figure 3.
The button shows the V-IV and V-V cross sections, 10 in Figure 3 is an aluminum alloy holding plate, 11 and 12 are large and small chips,
13 is a water hole for spouting cooling water, 14rr1 countersunk, 15
is a spare screw hole.

Reference numeral 16 in FIG. 4 denotes a substrate made of aluminum alloy, and a chip insertion hole 17 into which the base end (upper end) of the large-diameter chip 11 is inserted.
, a tip fitting hole 18 into which the base end of the small diameter tip 12 (FIG. 5) is fitted, and a water hole 19 communicating with the water hole 13 of the holding plate 10, and a plurality of cylindrical joint bosses 20 on the surface. It is attached with bolt 9.

The joint boss 20 has a pair of stepped grooves 21 on its side wall, into which a drive shaft 22 protruding downward from the polishing machine is fitted.
A diametrical (horizontal) pin 23 provided at the lower end of the shaft 2 fits into the groove 21 to connect the drive shaft 22 and the joint boss 20.

The polishing machine can be manually moved above a horizontal stone surface, for example, and applies a predetermined load and rotation to the polishing plate via the joint boss 20.

The illustrated large-diameter chip 11 has a chip stand 24 made of resin or alloy.
and a diamond chip 25 made of resin or alloy as a base material, and a tapered surface 26 whose diameter increases smoothly upwards from the middle height part of the cylindrical body to form a large diameter at the upper end (base end). An outward flange is formed continuously on the diameter portion 27, and the large diameter portion 27 (/'i is inserted into the chip insertion hole 17, and the upper end surface is in contact with the bottom surface of the chip insertion hole 17, leaving the rubber backing 28 aside. There is.

The presser plate 10 (ri) pressurizes the tapered surface 26 at a tapered chip insertion hole 29 that fits the tapered surface 26.

The small diameter tip 12 (FIG. 5) has a similar structure and is clamped to the substrate 16 by a holding plate 10, and corresponding parts are designated by the same reference numerals with a dash "'".

Since the holding plate 10 is fastened to the board 16 side with a plurality of countersunk screws 14, the chip insertion holes 29 and 29' of the board 10 are tightened.
The chips 11 and 12 are clamped to the substrate 16 side via the tapered surfaces 26 and 26' of the chips 11 and 12, and the pressure contact force on the tapered surface 26 is always kept constant by the action of the rubber backings 28 and 28'. Ru.

The illustrated polishing plate attached to the drive shaft 22 of the polishing machine is placed on the stone surface, and the polishing plate is rotated while discharging cooling water from the water hole 13 through the cooling water passage in the drive shaft 22. Perform polishing work by applying a load of

At that time, the rotational force of the drive shaft 22 is applied to the pin 23, the joint boss 20,
The rotational force is transmitted to the substrate 16 through the bolt 9, and is transmitted to the chips 11 and 12 from the cylindrical inner surface of the chip insertion hole 17, 18 of the substrate 16, so that the chips 11 and 12 rotate integrally with the substrate 16.

Therefore, the holding plate 10 does not participate in the transmission of rotational force, but simply tightens the tip 11.12 into the tip insertion hole 17.18.
It functions to prevent falling off.

As explained above, according to the present invention, the rotational force introduction part 20
A plurality of chip insertion holes 17.
18 are provided, and the base ends of the grindstone chips 11 and 12 having outward flanges at the base ends are fitted into each chip insertion hole 17° 18 to hold the substrate 16 in the rotational direction and radial direction, and the base plate 10 is A plurality of chip insertion holes 29, 29' having a smaller diameter than the flange 27 provided are fitted into the grinding wheel chip 11, 12 body at corresponding positions from the distal end side of the flange 27, and the presser plate 10 is fitted with a plurality of bolts. 14
The grinding wheel chip 11 is tightened to the substrate 16 in the direction of the central axis.
．． Since we held 12, we can expect the following effects.

(a) Since the grindstone chips 11 and 12 are held in the rotational direction and radial direction by the substrate 16, and held in the central axis direction by the presser plate 10, the chips 11 and 12 are moved laterally from the surface of the stone during polishing work. Even if thrust or impact is received in any direction, the impact is received by the solid base plate 16. Therefore, the weight of the presser plate 10 can be reduced, and the number of bolts for tightening the presser plate 10 can be reduced. This simplifies the work of attaching and detaching.

(b) Since the grindstone chips 11 and 12 fitted into the holes 17 and 18 of the substrate 16 are held together and fixed by the presser plate 10, when replacing the chips 11 and 12,
It can be replaced extremely easily by simply removing the presser plate 10.

(.

) Since the lateral thrust and impact of the grinding wheel chips 11 and 12 are received by the solid base plate 16, the chips 11 and 12 are unlikely to rattle, but even if they do rattle or become loose, the presser plate 10 will Chips 11 and 12 will not pop out unless they come off, so safety is high.

(d) Once you buy the set of the board 16 and the holding plate 10, you only need to buy the chips 11 and 12, which reduces the lining cost.

(e) Even if the chips 11 and 12 wear out on one side, they can be easily replaced.

Rearrangement is also possible. (f) Even if some chips are damaged, they can be easily replaced and repaired.

(g) The chips 11 and 12 can be molded simultaneously, and the structure of the substrate 16 and presser plate 10//'i is simple, so manufacturing is easy and costs are low.

(h) Only the chips need to be transported to the user;
Transportation and packing become easier.

Furthermore, when embodying the present invention, the rubber backings 28 and 28' in the chip insertion holes 17 and 18 may be omitted, and a rubber backing may be interposed between the substrate 16 and the holding plate 10.

Further, although the illustrated chips 11 and 12 are circular as shown in FIG. 3, they can also be elongated oval shapes arranged radially.

Each chip may be provided with an outwardly facing flange of rectangular cross section without tapered surface 26.

[Brief explanation of drawings]

Figures 1 and 2 are longitudinal sectional views showing the conventional structure, Figure 3 is a back view of the polishing plate according to the present invention, and Figures 4 and 5 are 1v-rv and v-v of Figure 3, respectively. FIG. 10... Pressing plate, 14... Countersunk screw (bolt), 16... Board, 17, 18...
・Chip insertion hole, 20...Joint boss (rotational force introduction part), 27...Large diameter part (outward flange).

Claims (1)

[Scope of utility model registration request] A plurality of chip insertion holes 17 and 18 are provided on the back surface of the substrate 16 having the rotational force introduction part 20, and each chip insertion hole 17.1
8, a grindstone tip 11 having an outward flange at its base end;
The base end portion of 12 is fitted to hold the substrate 16 in the rotational direction and radial direction, and the flange 2 provided on the holding plate 10
A plurality of chip insertion holes 29 and 29' having a diameter smaller than 7 are fitted into the grinding wheel chip 11. A chip-fitting type polishing plate characterized in that grinding wheel chips 11 and 12 are fastened and held in the direction of the central axis.