Grinding wheel with high machining precision
By using the external working grinding wheel and internal core grinding wheel combined with the metal matrix design, the problems of large assembly gaps, serious vibrations and waste of materials in high-precision processing are solved, and high-precision assembly and low-cost grinding wheel use are achieved.
Patent Information
- Application Number
- CN202422740525.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In high-precision precision machining, existing grinding wheels have problems such as large assembly clearance, insufficient processing accuracy, serious tremor and waste of materials.
The structural design includes an external working grinding wheel, an internal core grinding wheel and a metal substrate. The metal substrate is equipped with mounting holes, the internal core grinding wheel is bonded to the metal substrate, and the external working grinding wheel is bonded to the outside of the internal core grinding wheel. The metal substrate is preferably an aluminum alloy material.
Improve assembly accuracy, reduce tremor, reduce costs, and effectively utilize grinding wheel materials, reducing waste.
Smart Images
Figure CN223130424U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a grinding tool, in particular to a grinding wheel with high machining precision. Background Art
[0002] The grinding wheel is the most important type of grinding tool in grinding machining. The grinding wheel is made by adding a binder to abrasives and then undergoing processes such as compacting, drying, and roasting. Due to the influence of the abrasive particle size, there is a relatively large gap during the assembly of the grinding wheel and the machine tool spindle, which has a great impact on grinding results such as machining precision in high-precision machining.
[0003] Our company previously designed a metal matrix positioning grinding wheel to solve the assembly gap problem. As Figure 1 shown, there is an obvious improvement in machining precision during actual grinding. When using a large depth of cut or a more precise machining method, for a steel metal matrix, its strength is sufficient but its weight is too large and it is inconvenient to load and unload; for an aluminum alloy matrix, the cost is relatively low and it is lightweight, but its own rigidity is insufficient, resulting in slight tremors during the machining process.
[0004] In addition, when the grinding wheel is in use, only the outer part participates in the grinding work. When the grinding wheel wears to a certain extent, the remaining inner part will no longer be able to participate in the grinding, causing a certain waste. Content of the Utility Model
[0005] The technical task of the utility model is to provide a grinding wheel with high machining precision in view of the above deficiencies of the prior art.
[0006] The technical solution for the utility model to solve its technical problems is: it includes an external working grinding wheel, an internal core grinding wheel, and a metal matrix. The metal matrix is provided with mounting holes matching the machine tool, and the internal core grinding wheel is bonded to the metal matrix. The external working grinding wheel is bonded to the outside of the internal core grinding wheel.
[0007] The above-mentioned metal matrix material is aluminum alloy.
[0008] Compared with the prior art, the utility model has the following prominent beneficial effects:
[0009] 1. High assembly precision with the machine tool;
[0010] 2. Small tremors during grinding;
[0011] 3. Reduced cost. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the structure of a grinding wheel in the prior art.
[0013] Figure 2 It is a schematic diagram of the structure of the grinding wheel of the utility model. Detailed Embodiment
[0014] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific embodiments.
[0015] As Figure 2 shown, the present utility model includes an external working grinding wheel, an internal core grinding wheel, and a metal matrix. An installation hole matching the machine tool is provided on the metal matrix, and the internal core grinding wheel is bonded to the metal matrix, where the metal matrix is preferably made of aluminum alloy material. The external working grinding wheel is located outside the internal core grinding wheel and is bonded to it.
[0016] The metal matrix can achieve high machining accuracy, so that a high assembly accuracy can be achieved between the metal matrix and the machine tool, and the assembly accuracy can reach a few tenths of a millimeter, while the positioning accuracy is between ten and twenty-something tenths of a millimeter when the grinding wheel is directly installed on the machine tool. The internal core grinding wheel plays a role in buffering and shock absorption. The internal grinding wheel can use materials with better vibration absorption effect, so as to achieve a better buffering and shock absorption effect.
[0017] As shown in the drawings, the working surface of the grinding wheel is mainly the outer cylindrical surface. As the work progresses, the outer cylindrical surface will gradually wear and the diameter of the grinding wheel will decrease. When the diameter of the grinding wheel approaches the diameter of the metal matrix, the grinding wheel will no longer be usable, and the remaining part will be discarded, resulting in a certain amount of waste. In order to reduce waste and save manufacturing costs, the inner diameter of the grinding wheel is usually slightly smaller than the outer diameter of the metal matrix, that is to say, the bonding surface between the grinding wheel and the metal matrix is small, which is also one of the reasons for the vibration of the grinding wheel. In the present utility model, since the internal core grinding wheel does not participate in the grinding work, relatively inexpensive materials can be used. The abrasive used for the external working grinding wheel can cost more than a hundred thousand yuan per ton, while the internal core grinding wheel can use inexpensive materials costing several thousand yuan per ton. When in use, since the external working grinding wheel does not contact the metal matrix, it can be almost completely used up, and the remaining part is the internal core grinding wheel and the metal matrix. The metal matrix can be recycled and reused, and the internal core grinding wheel is cheap, so there will not be too much waste, saving costs.
[0018] It should be noted that the specific embodiments of the present utility model have been described in detail for the present utility model. For those skilled in the art, various obvious changes made without departing from the spirit and scope of the present utility model are within the protection scope of the present utility model.
Claims
1. A grinding wheel with high machining precision, characterized in that: It includes an external working grinding wheel, an internal core grinding wheel and a metal matrix; an installation hole matching the machine tool is provided on the metal matrix, and the internal core grinding wheel is bonded to the metal matrix; the external working grinding wheel is bonded to the outside of the internal core grinding wheel.
2. The high-precision grinding wheel according to claim 1, wherein: The material of the metal matrix is aluminum alloy.