CN220362329U

CN220362329U - Vertical small grinding wheel drilling tool

Info

Publication number: CN220362329U
Application number: CN202321995871.2U
Authority: CN
Inventors: 杨崇; 董德胜; 胡慧勇; 王学涛
Original assignee: White Dove Abrasives Co ltd
Current assignee: White Dove Abrasives Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-19
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a vertical small grinding wheel drilling tool which is used for grinding an inner hole of a small grinding wheel. The drilling tool consists of a fixing bolt, a cylinder and a frustum-shaped drill bit part which are integrally formed and sequentially connected from top to bottom, wherein a thin sheet flange is arranged on the outer circumference of the top of the cylinder, 3-7 semi-cylindrical inclined slots which are vertically communicated are arranged on the surface of the cylinder, the inclined slots extend downwards to the frustum-shaped drill bit part, and the depth of each position of the communicated inclined slots is consistent. The drilling tool is fixed on rotating equipment through a fixing bolt, when the inner hole of the small grinding wheel is ground, cast iron sand is poured from the flange of the sheet, the cast iron sand falls from the chute, and the inner hole of the small grinding wheel is ground along with rotation. The tool effectively improves the machining efficiency of the inner hole of the small grinding wheel, and cast iron sand is poured in through the flange of the sheet, so that waste is effectively reduced, and the working efficiency is improved.

Description

Vertical small grinding wheel drilling tool

Technical Field

The utility model belongs to the field of grinding wheel machining and manufacturing, and particularly relates to a vertical small grinding wheel drilling tool.

Background

The small grinding wheel is made of alumina abrasive and binding agent and is prepared through the procedures of mixing, forming, pressing, firing and the like, and the main application field is machining, in particular to precise forming grinding. The grinding workpiece is usually high-hardness alloy steel, and is used for rough grinding and fine grinding processes, and a small grinding wheel with a part of fine granularity can also be used for super-fine polishing.

Because the small grinding wheel has more size specifications, a part of grinding wheels with smaller inner hole diameters (such as the aperture of 1.5-5 mm) need smaller-specification cutters and grinding tools for machining, the small-specification cutters have higher preparation cost, and the cutters are difficult to enter the inner hole for cutting during machining, so that the working procedure is more complicated. Therefore, after the firing of most small grinding wheels is finished, the grinding wheels are directly installed on equipment for use and are not processed any more.

However, small grinding wheels, which have not been ground to the bore, are prone to the following problems: 1. the dimensional accuracy cannot be ensured, and the situation that the size of an inner hole is out of tolerance and cannot be installed often occurs; 2. because of poor precision, precision grinding is also difficult to meet customer requirements; 3. because the aperture is out of tolerance, the grinding wheel does not stably run when rotating, and the grinding wheel is easy to break when feeding and grinding. The inner hole of the small grinding wheel is not processed, so that the use of customers and personal safety are seriously affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the vertical small grinding wheel drilling tool, which can solve the problems of difficult processing of the inner hole of the small grinding wheel and high grinding processing cost.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a vertical small grinding wheel drilling tool consists of a fixing bolt, a cylinder and a frustum-shaped drill bit part which are integrally formed and sequentially connected from top to bottom, wherein a thin sheet flange is arranged on the outer circumference of the top of the cylinder, a chute which penetrates up and down is arranged on the surface of the cylinder, and the chute extends downwards to the frustum-shaped drill bit part.

Preferably, the fixing bolt is hexagonal, and the thin flange is a round iron sheet with the thickness of 1 mm.

Preferably, the number of the inclined grooves is 3-7 and the inclined grooves are uniformly arranged on the cylinder.

Preferably, the chute is semi-cylindrical and has a uniform depth.

Preferably, the cylinder is made of chromium-containing cast iron, and the diameter of the cylinder is equal to that of a small processing grinding wheel.

By adopting the technical scheme, the drilling tool is arranged on the rotary machine through the fixing bolt, the cast iron sand is poured into the sheet flange, the cast iron sand slowly falls down through the chute on the cylinder, the small grinding wheel penetrates upwards from the bottom, and the cast iron sand is driven to grind through the rotation of the drilling tool, so that the precision machining of the inner hole of the small grinding wheel is realized.

Compared with the prior art, the utility model has the beneficial effects that: 1. the operation is simple and convenient, and the overflow in the grinding process of the cast iron sand is prevented and recycled due to the existence of the sheet flange; 2. the grinding precision is high, the diameter of the drilling tool is fixed, and the diameter of an inner hole of a small grinding wheel can be controlled; 3. the machining efficiency is high, and the drilling tool drives the cast iron sand to rotate, so that efficient machining is realized.

Drawings

FIG. 1 is a schematic diagram of a vertical small grinding wheel drilling tool according to the present utility model;

FIG. 2 is a top view of a vertical small grinding wheel drilling tool according to the present utility model;

FIG. 3 is a bottom view of a vertical small grinding wheel drilling tool according to the present utility model;

fig. 4 is a use state diagram of a vertical small grinding wheel drilling tool provided by the utility model.

In the figure: 1. a fixing bolt; 2. a sheet flange; 3. a cylinder; 4. a chute; 5. a frustum-shaped drill part; 6. small grinding wheels.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in figures 1-3, the vertical small grinding wheel drilling tool consists of a hexagonal fixing bolt 1, a cylinder 3 and a frustum-shaped drill part 5 which are integrally formed, wherein a thin sheet flange 2 is arranged on the outer circumference of the top of the cylinder 3, the thin sheet flange 2 is a round iron sheet with the thickness of 1mm, 7 chute 4 which is vertically penetrated are uniformly arranged on the surface of the cylinder 3, the chute 4 extends downwards to the frustum-shaped drill part 5, the chute 4 is semi-cylindrical and has the same depth, the cylinder 3 is made of chromium-containing cast iron, and the diameter is equal to the diameter of a small processing grinding wheel 6.

When the rotary machine is used, the hexagonal fixing bolt 1 is arranged on the rotary machine through the locking tool, the rotary machine switch is turned on, the drilling tool is driven to rotate at a constant speed, then cast iron sand with uniform granularity for grinding is poured into the round sheet flange 2, and the cast iron sand falls along with the chute 4 on the cylinder 3 due to gravity and turning force. As shown in fig. 4, when the drilling tool rotates, a small grinding wheel 6 with the inner hole diameter slightly smaller than that of the drilling tool slowly penetrates upwards from a frustum-shaped drill bit part 5 at the bottom, and in the penetrating process, cast iron sand in a chute 4 of the drilling tool can effectively grind the inside of the small grinding wheel 6; after the drilling tool is completely penetrated, the small grinding wheel 6 is taken out downwards and rotated up and down by 180 degrees, a drilling tool is penetrated from the other surface of the small grinding wheel 6, the operation is repeated, the inner hole of the small grinding wheel 6 is sufficiently ground, and the consistency of inner hole grinding is realized.

The inner hole grinding mode is simple and convenient to operate, prevents overflow in the grinding process of the cast iron sand, realizes higher utilization rate of the cast iron sand, and achieves efficient grinding; and the grinding precision is high, the machining efficiency is high, the inner hole diameter of the small grinding wheel is effectively controlled to be machined, and the small grinding wheel with different inner holes can be machined through drilling tools with different diameters, so that the machining is stable and efficient.

Claims

1. The utility model provides a vertical little emery wheel drilling instrument comprises integrated into one piece and the fixing bolt, cylinder and the frustum shape drill bit portion that top-down connects gradually, its characterized in that is provided with the thin slice flange on the outer circumference at cylinder top, is provided with the chute that link up from top to bottom on the cylinder surface, and chute downwardly extending reaches the frustum shape drill bit portion.

2. The vertical small grinding wheel drilling tool of claim 1, wherein the fixing bolt is hexagonal, and the thin flange is a circular iron sheet with a thickness of 1 mm.

3. The vertical small grinding wheel drilling tool according to claim 1, wherein the number of the inclined grooves is 3-7 and the inclined grooves are uniformly arranged on the cylinder.

4. A vertical small grinding wheel drilling tool according to claim 3, wherein the chute is semi-cylindrical and of uniform depth.

5. The vertical small grinding wheel drilling tool of claim 1, wherein: the cylinder is made of chromium-containing cast iron, and the diameter of the cylinder is equal to that of a small processing grinding wheel.