Special tool for assembling aviation electromechanical products
Through the decomposition and precision matching technology of combined tooling, the problem of insufficient precision of long-axis parts in integrated tooling is solved, and efficient processing accuracy and low scrap rate are achieved.
Patent Information
- Application Number
- CN202422630558.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When processing long shaft parts, the integrated tooling is difficult to meet the strict angular positioning requirements, resulting in insufficient machining accuracy and requires special extended tools to avoid interference, which increases the machining difficulty and equipment accuracy requirements.
Design a combined tooling, by decomposing the machining positioning seat and positioning shaft, using interference fit and finishing technology, to ensure the precise fit of the positioning pin hole and the positioning shaft, and reduce the processing difficulty and accuracy requirements.
Improve processing accuracy, reduce waste rate, and improve production efficiency.
Smart Images
Figure CN223289697U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling, and specifically relates to a special tooling for assembling aviation electromechanical products. Background Art
[0002] The increasing variety of aviation products and the resulting complexity of their structural designs are putting a strain on machining capabilities. When machining complex workpieces in different directions, tooling is used to position them and ensure final dimensional accuracy. This is typically achieved with integrated tooling. However, when the workpiece is shaped like a long axis and has strict angular positioning requirements, integrated tooling is affected by deformation and equipment accuracy, making it difficult to achieve precise accuracy. Therefore, a modular tooling design was developed. Utility Model Content
[0003] In order to solve the technical problem that when the workpiece is in the shape of a long axis part and there is a strict angular position relationship, it is difficult to achieve relatively precise accuracy due to the influence of deformation factors and equipment accuracy factors during processing using an integrated tool, and thus a special tool for the assembly of aviation electromechanical products is provided.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special tool for assembling aviation electromechanical products, comprising: a workpiece, a through hole is provided inside the workpiece, a positioning shaft passes through the workpiece, a positioning seat is cooperatively connected to the positioning shaft, positioning pin holes are provided on the opposite surfaces of the positioning seat and the workpiece, two ends of the positioning pins are cooperatively connected in the two positioning pin holes, and the two ends of the positioning shaft are respectively tightened to the workpiece and the outer end of the positioning seat by bolts.
[0005] Preferably, a gasket is provided between the bolt, the workpiece and the outer end of the positioning seat.
[0006] Compared with the prior art, the beneficial effects of the present invention are:
[0007] When designing an integrated fixture, the close distance between the locating pin and the locating axis of the locating seat can create difficulties during processing: a custom, extended tool is required to avoid interference. The tool length can cause vibration during operation, which can lead to substandard locating pin hole size or position accuracy on the locating seat. All precision dimensions are contained within a single component, placing high demands on the machining equipment. This fixture's key components are disassembled and processed before being combined for use. This reduces both machining difficulty and design accuracy requirements.
[0008] By improving processing accuracy, the scrap rate is reduced and production efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1It is a structural diagram of the utility model;
[0010] Figure 2 This is a schematic diagram of the explosion structure of the utility model;
[0011] Figure 3 It is a schematic structural cross-sectional view of the present utility model.
[0012] In the figure: workpiece 1; positioning shaft 2; positioning seat 3; positioning pin hole 4; positioning pin 5; bolt 6; gasket 7. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0014] The present invention will be described in detail below with reference to the accompanying drawings. Example
[0015] The following is combined with Figure 1-3 This embodiment describes a special tool for assembling aviation electromechanical products, comprising: a workpiece 1, with a through hole formed therein, a positioning shaft 2 passing through the workpiece 1, a positioning seat 3 being cooperatively connected to the positioning shaft 2, and positioning pin holes 4 being formed on the surfaces of the positioning seat 3 facing the workpiece 1, with two ends of positioning pins 5 being cooperatively connected in the two positioning pin holes 4, and the two ends of the positioning shaft 2 being respectively tightened to the workpiece 1 and the outer ends of the positioning seat 3 by bolts 6;
[0016] A gasket 7 is provided between the bolt 6 and the workpiece 1 and the outer end of the positioning seat 3;
[0017] When the locating seat 3 is processed, the locating pin hole 4 is processed. The outer diameter of the locating pin 4 is matched according to the size of the locating pin hole 4, and no installation is performed after the matching is completed. Then the locating shaft 2 is processed, and the outer diameter of the locating shaft 2 and the inner hole of the locating seat 3 are in an interference fit of 0.005. After the locating seat 3 and the locating shaft 2 are processed as a single piece, they are assembled and finally ground and finished. Since a margin is left in the early processing of each workpiece, the single-sided processing amount is 0.1mm during the finishing process. The outer diameter of the locating shaft 2 and the right end face of the locating seat 3 are finished to ensure that the two are perpendicular and reach the final size. After processing, the locating pin 4 is inserted into the locating pin hole 4 of the locating seat 3. The tooling is completed.
[0018] During use, after the workpiece and the fixture are assembled, the positioning seat 3 is clamped in the fixture and coordinated with the four-axis machining center to complete the axis-fixing processing.
[0019] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.
[0020] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.
[0021] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A special tool for assembling aviation electromechanical products, characterized by: include: A workpiece (1) is provided with a through hole inside the workpiece (1), a positioning shaft (2) passes through the workpiece (1), a positioning seat (3) is connected to the positioning shaft (2), and positioning pin holes (4) are provided on the opposite surfaces of the positioning seat (3) and the workpiece (1), and two ends of the positioning pins (5) are connected to each other in the two positioning pin holes (4), and the two ends of the positioning shaft (2) are respectively tightened to the workpiece (1) and the outer ends of the positioning seat (3) by bolts (6).
2. The special tooling for assembling aviation electromechanical products according to claim 1, characterized in that: A gasket (7) is provided between the bolt (6), the workpiece (1), and the outer end of the positioning seat (3).