A tool for processing a balance connecting piece

Abstract

The utility model discloses a kind of tooling of processing balance connecting piece, including round steel (3), connecting piece (4) and electrode assembly, the electrode assembly is side by side set on connecting piece (4), the connecting piece (4) is connected with round steel (3), the round steel (3) is connected with spark machine tool, and the processing of balance is realized by electrode assembly.The utility model welding to balance can be realized by tooling, both guarantee the size, roughness, form tolerance of balance;While improving processing efficiency, save cost.

Description

Technical Field

[0001] This utility model relates to the field of high-precision measuring instrument technology, and in particular to a tooling for processing balance connecting pieces. Background Technology

[0002] A balance is a high-precision measuring instrument used to measure the loads on test models in a high-speed wind tunnel. The test model is over ten meters long and weighs several tons, while the wind speed in the high-speed wind tunnel can reach Mach 3-4. The accuracy error of the balance in measuring the load on the test model is required to be within ±1 kg. Because the manufacturing precision of the balance support does not meet the design requirements, the accuracy error of the balance in measuring the load is too large.

[0003] The balance consists of a balance support and strain gauges. The balance support is composed of the balance body and several sets of connecting plates. See the attached structural diagram. Figure 1 After the balance bracket is manufactured, strain gauges are attached to it. The key factor affecting the balance's measurement accuracy is the manufacturing precision of the balance bracket. However, due to the large number of connecting pieces and significant welding deformation, the requirements for dimensions, roughness, and geometric tolerances cannot be met, thus compromising the balance's measurement accuracy. Furthermore, the production efficiency of the balance bracket is very low, resulting in high costs. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for processing balance connecting pieces, so as to solve the technical problem of how to improve the processing efficiency of balance brackets and save costs.

[0005] This utility model is achieved by the following technical solution: a tooling for processing balance connecting pieces, including round steel, connecting parts and electrode assembly, wherein the electrode assembly is arranged side by side on the connecting parts, the connecting parts are connected to the round steel, the round steel is connected to an electrical discharge machine tool, and the balance is processed through the electrode assembly.

[0006] Furthermore, the balance consists of a balance bracket and strain gauges. The balance bracket consists of a balance body and multiple sets of connecting pieces. The balance body is integrally formed, and after the connecting pieces are individually processed, tooling is used to weld the connecting pieces to the balance body.

[0007] Furthermore, the balance body is provided with multiple sets of parallel grooves, which enable the electrode assembly to move up and down to complete the processing of the connecting piece; the grooves are connected by connecting slots, which allow the connecting parts to move up and down, thus solving the processing of the connecting piece in the middle of the balance bracket and ensuring the size, roughness, and form and position tolerances of the balance bracket.

[0008] Furthermore, the connecting component is a steel bar, and the shape of the steel bar is a cylinder or a cuboid to ensure the stability of the processing.

[0009] Furthermore, the electrode assembly includes multiple electrode plates arranged side by side on the connector, and the electrode plates are designed in the shape of a gap between two connector plates to facilitate the processing of the connector.

[0010] The beneficial effects of this utility model are as follows: This utility model designs the balance bracket as a welded part, and uses a tooling to weld the connecting piece to the balance body together. The tooling is equipped with multiple electrode pieces, which not only solves the processing of the middle connecting piece of the balance bracket and ensures the size, roughness and form and position tolerance of the balance bracket, but also allows multiple connecting pieces to be processed at the same time, improving processing efficiency and saving costs. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the balance structure;

[0013] Figure 2 This is a schematic diagram of the balance support structure;

[0014] Figure 3 This is a top view of the balance support;

[0015] Figure 4 for Figure 3 AA cross-section view;

[0016] Figure 5 This is a schematic diagram of the tooling structure;

[0017] Figure 6 This is a schematic diagram of the tooling usage;

[0018] Figure 7 for Figure 6 BB cross-section;

[0019] In the diagram, 1-balance body, 2-connecting piece, 3-round steel, 4-connector, 5-electrode plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] See Figures 1 to 7 A tooling for machining balance connecting pieces includes a round steel bar 3, a connector 4, and an electrode assembly. The electrode assembly is arranged side by side on the connector 4. The connector 4 is connected to the round steel bar 3. The round steel bar 3 is connected to an electrical discharge machine tool. The balance is machined through the electrode assembly.

[0024] The balance consists of a balance bracket and strain gauges. The balance bracket comprises the balance body 1 and four sets of connecting plates 2. After the balance bracket is manufactured, the strain gauges are attached to it. To solve the machining problem of the four sets of connecting plates 2 in the middle of the balance bracket, the balance bracket can be designed as a welded component. After the connecting plates 2 are machined separately, they are welded to the balance body 1. However, due to the structure of the connecting plates 2, the weld seam cannot be ground after all welding is completed. Therefore, only one layer can be welded, and after cooling, grinding, and non-destructive testing can be performed before welding the next layer of connecting plates 2. Using the method of machining and then welding results in large welding deformation due to the large number of connecting plates 2, which cannot meet the requirements of size, roughness, and geometric tolerances, thus failing to guarantee the measurement accuracy of the balance. At the same time, the production efficiency of the balance bracket is very low and the cost is high.

[0025] In this embodiment, to ensure the measurement accuracy of the balance, the balance bracket is machined as a whole. The balance body 1 has four sets of parallel grooves. These grooves allow the electrode assembly to move up and down, completing the machining of the connecting pieces 2. Grooves on the same side are connected by connecting slots, which allow the connecting piece 4 to move up and down. The round steel 3, connecting piece 4, and electrode assembly are welded together. The connecting piece 4 is a steel bar, shaped like a cylinder or cuboid to increase its rigidity and ensure machining stability. The electrode assembly is an electrode plate 5, designed to fit the gap between two adjacent connecting pieces 2. The round steel 3 is fixed to an EDM machine, and the connecting piece 4 connects the electrode plate 5 to the round steel 3. This successfully solves the machining problem of the four sets of connecting pieces in the middle of the balance bracket, ensuring the dimensional, surface roughness, and form and position tolerances of the balance bracket. However, the disadvantage is that due to the large number of connecting pieces 2, this machining method results in low production efficiency and high cost.

[0026] In some embodiments, in order to further improve the processing efficiency of the balance bracket, the electrode assembly is set as multiple electrode pieces 5, which are arranged side by side on the connector 4. This increases the number of electrode pieces 5, which can ensure that multiple connector pieces 2 are processed at the same time, thereby improving processing efficiency and saving costs.

[0027] This utility model designs the balance bracket as a welded component. A tooling is used to weld the connecting piece 2 to the balance body 1. The tooling is equipped with multiple electrode pieces 5, which solves the processing of the four sets of connecting pieces 2 in the middle of the balance bracket and ensures the size, roughness and form and position tolerances of the balance bracket. At the same time, multiple connecting pieces 2 can be processed at the same time, which improves processing efficiency and saves costs.

[0028] It should be noted that the terms "connection" and "setting" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "connection" or "setting" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "connection" and "setting," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein. Moreover, for the foregoing embodiments, for the sake of simplicity, they are all described as a series of actions; however, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Secondly, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to this application.

[0029] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

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