A grinding head for grinding holes

Abstract

The present invention provides a grinding head for grinding holes, including a frame and an abrasive belt; the frame is cylindrical, and a plurality of mounting grooves are processed on the side wall of the frame; the plurality of mounting grooves are arranged obliquely along the rotation direction of the frame, and are evenly distributed around the axis of the frame; an annular groove is processed on the middle side wall of the frame; the root of the abrasive belt is inserted into the mounting groove, and is fixed to the frame through a throat clamp matched with the annular groove; a connecting hole for detachable connection with a drilling machine shaft is arranged in the center of the frame. The present invention extends the grinding head into the hole, aligns it appropriately, and adjusts the appropriate speed for grinding. During grinding, the abrasive belt expands outward due to the action of centrifugal force to achieve the effect of grinding. After several measurements during the grinding process, a hole that meets the standard can be processed, and the processing efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of repairing and processing hole parts, in particular to a grinding head for grinding holes. Background Art

[0002] In the process of repairing and processing special-shaped (non-rotating) hole parts, only 0.05mm-0.3mm of the inner hole of some parts is removed, especially for holes with a diameter of 70mm-120mm. According to the existing processing methods in the market, only reaming, grinding, boring, and broaching can be used. These processing methods require special equipment and tools, which are difficult to meet the requirements in the emergency treatment of mining equipment spare parts. In addition, from the perspective of tool alignment and equipment, processing has certain difficulties. First, some parts are special-shaped, which makes it difficult to clamp and align them on the machine tool. Second, the manual alignment error of the equipment is greater than the processing allowance, so it is difficult to process them. If the purchase of special tools and equipment cannot meet the emergency requirements in a timely manner, it will cause cost waste. Summary of the invention

[0003] In view of the above technical problems, a grinding head for grinding holes is provided.

[0004] The technical means adopted by the present invention are as follows:

[0005] A grinding head for grinding holes, comprising a frame and an abrasive belt;

[0006] The frame is cylindrical, and a plurality of mounting grooves are processed on the side wall of the frame; the plurality of mounting grooves are arranged obliquely along the rotation direction of the frame and are evenly distributed around the axis of the frame;

[0007] The middle side wall of the frame is processed with an annular groove;

[0008] The root of the abrasive belt is inserted into the mounting groove and fixed to the frame through a throat hoop matched with the annular groove;

[0009] A connection hole for detachably connecting with a drilling machine shaft is arranged at the center of the skeleton.

[0010] Preferably, a throat hoop passing hole is arranged on the abrasive belt, and the throat hoop is locked in the annular groove after passing through the throat hoop passing hole.

[0011] Preferably, the frame is made of nylon 1010 material.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The present invention adopts the method of arranging abrasive belts on the skeleton for processing. The abrasive belts are flexible. The grinding head is extended into the hole to properly align and adjust the appropriate rotation speed for grinding. During grinding, the abrasive belts expand outwards due to the centrifugal force to achieve the grinding effect. After several measurements during the grinding process, a hole that meets the standard can be processed. If there is no device, the traditional solution is to use a method of re-surfacing and then processing, which is firstly a long construction period and secondly a waste of labor and materials, especially for cast iron parts, cast iron welding rods are very expensive. The device is used for fast processing, and the grinding time for each hole is 5-10 minutes, which saves manpower and material resources, especially removing the 0.05mm-0.30mm surplus is very fast and effective. Because the grinding head of each specification achieves the purpose of grinding by the expansion of the abrasive belt outwards, it can grind a grinding range larger than the grinding head diameter of 5mm-20mm, and the processing efficiency is improved by more than 10 times, creating an additional output value of 50,000 yuan, and saving 80,000 yuan of cast iron welding rods each year. In addition, the grinding head can also be used to polish the hole, and different surface roughness can be achieved by replacing abrasive belts of different specifications.

[0014] Based on the above reasons, the present invention can be widely promoted in the fields of hole processing and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The figure is a schematic diagram of the structure of a grinding head for grinding holes according to the present invention.

[0017] Figure 2 It is a top view of the skeleton of the present invention.

[0018] Figure 3 It is a side view of the skeleton of the present invention. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, a grinding head for grinding holes includes a frame 1 and an abrasive belt 2;

[0027] The skeleton 1 is cylindrical and made of nylon 1010 material. The outer diameter of the skeleton 1 is 100 mm and the thickness is 75 mm. A plurality of mounting grooves 11 are processed on the side wall of the skeleton 1. The plurality of mounting grooves 11 are arranged obliquely along the rotation direction of the skeleton 1 and are evenly distributed around the axis of the skeleton 1. In this specific embodiment, 12 mounting grooves 11 are processed, and the groove width is 1.5 mm. The inner edge of the mounting groove 11 is 30 mm away from the center of the circle, and the angle between the inner edge of the mounting groove 11 and the tangent of the circle in which it is located is 12°. The overall length of the mounting groove 11 is 34.25 mm.

[0028] The middle side wall of the frame 1 is processed with an annular groove 12, the width and depth of the annular groove are both 15mm;

[0029] The root of the sanding belt 2 is inserted into the mounting groove 11 and is fixed to the frame 1 through a throat hoop (not shown) that matches the annular groove 12; a throat hoop through hole is arranged on the sanding belt 2, and the throat hoop is locked in the annular groove 12 after passing through the throat hoop through hole.

[0030] A connection hole 13 for detachably connecting to a drilling machine shaft is arranged at the center of the skeleton 1, and the hole diameter of the connection block 13 is 30.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding head for grinding holes, characterized in that: Including skeleton and sanding belt; The frame is cylindrical, and a plurality of mounting grooves are processed on the side wall of the frame; the plurality of mounting grooves are arranged obliquely along the rotation direction of the frame and are evenly distributed around the axis of the frame; The middle side wall of the frame is processed with an annular groove; The root of the abrasive belt is inserted into the mounting groove and fixed to the frame through a throat hoop matched with the annular groove; A connection hole for detachably connecting with a drilling machine shaft is arranged at the center of the skeleton.

2. A hole-grinding grinding head according to claim 1, characterized in that: A throat hoop passing hole is arranged on the abrasive belt, and the throat hoop is locked in the annular groove after passing through the throat hoop passing hole.

3. A grinding head for grinding holes according to claim 1 or 2, characterized in that: The frame is made of nylon 1010 material.

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