Non-metal insert self-locking nut closing tool
By adopting structures such as the closing mold and centering bushing with semi-circular arc molding holes in the closing tooling of the non-metal insert self-locking nut, the problems of the loss of the self-locking nut of the non-metallic insert self-locking nut caused by traditional tooling are solved, and the efficient and stable closing process and the effect of reducing production costs are achieved.
Patent Information
- Application Number
- CN202411909886.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-18
AI Technical Summary
After the non-metal insert self-locking nut is closed, the metal nut body part is not tightly wrapped around the non-metal insert, resulting in the bolt pushing the non-metal insert out of the nut body during the screwing of the bolt, losing the self-locking function, and the risk of use is high. In addition, the traditional closing tool has no centering sleeve, which makes the closing mold more troublesome and time-consuming when centering, and requires high skill level of the closing personnel.
A non-metal insert self-locking nut closing tooling including a closing mold, a centering bushing, a positioning pin and a positioning plate is adopted. The lower part of the upper closure die is equipped with semi-circular molding holes, and the positioning pins and centering bushings are used for centering and alignment. The material has been tempered and heat-treated to improve hardness and durability.
It improves closing efficiency, reduces production costs and product use risks, simplifies tooling structure and processing and manufacturing, and reduces the requirements for operator skills.
Smart Images
Figure CN119634604A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a non-metallic insert self-locking nut closing tool, belonging to the technical field of closing tool processing parts. Background Art
[0002] Compared with ordinary self-locking nuts, non-metallic insert self-locking nuts have the following advantages: excellent anti-loosening performance, little damage to the coating on the bolt surface, stable assembly torque, good impact resistance and seismic resistance, and good reusability.
[0003] Therefore, non-metallic insert self-locking nuts are widely used in aircraft, electronics, mechanical equipment, etc., with large demand, frequent production and large quantities.
[0004] Since non-metallic insert self-locking nuts, such as Figure 1 and Figure 2 As shown, the metal nut body is closed after the non-metallic insert is installed in the metal nut body, so as to ensure that the nut has a certain self-locking performance without the non-metallic insert falling off.
[0005] The traditional closing tooling has no centering sleeve, and the forming part of the closing upper die has no semicircular arc, but a straight line segment structure. Therefore, after the non-metallic insert self-locking nut is closed, the metal nut body does not wrap the non-metallic insert tightly, resulting in the bolt pushing the non-metallic insert out of the nut body during the process of screwing in the bolt, thus losing the self-locking function and posing a greater risk of use. In addition, the traditional closing mold is troublesome and time-consuming to center, and requires a high level of skill from the closing personnel. Summary of the invention
[0006] The problem to be solved by the present invention is that the upper mold forming part of the traditional closing tooling has no semicircular arc, but a straight segment structure. Therefore, after the non-metallic insert self-locking nut is closed, the metal nut body part does not tightly wrap the non-metallic insert, resulting in the bolt pushing the non-metallic insert out of the nut body during the process of screwing in the bolt, thereby losing the self-locking function and posing a greater risk of use. In addition, the traditional closing tooling has no centering sleeve, which makes the closing mold more troublesome and time-consuming to center, and requires a high level of skill from the closing personnel.
[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: Non-metallic insert self-locking nut closing tooling, including a closing upper die, a centering bushing, a locating pin and a locating plate; The centering bushing is installed in the positioning hole on the upper part of the positioning plate; The positioning pin is installed into the center above the positioning plate; The closing end of the closing upper die is installed into the centering bushing for centering and alignment; The lower part of the closing upper die is provided with a semicircular arc forming hole having the same outer dimensions as the metal insert self-locking nut; The material of the upper die for closing is Cr12MoV. After quenching and tempering heat treatment, the hardness reaches HRC58-62. The final surface treatment of the upper die for closing is cleaning and passivation. The positioning pin material is PA1010 nylon rod; The locating plate and centering bushing are made of 45 steel.
[0008] The beneficial effects of adopting the above technical solution are: The present invention is easy to use and has low requirements on the skill level of the operator; the closing efficiency is high and the production cost is reduced; due to the provision of a centering bushing and a semi-circular arc forming hole, the structure of the non-metallic insert self-locking nut after closing is stable and reliable, reducing the risk of product use; the closing tooling structure of the present invention is simple, easy to process and manufacture, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the structure of the non-metallic insert self-locking nut before closing.
[0010] Figure 2 This is a schematic diagram of the structure of the non-metallic insert self-locking nut after closing.
[0011] Figure 3 It is a schematic diagram of the structure of the non-metallic insert self-locking nut closing tooling of the present invention.
[0012] In the figure: 1-closing upper die, 2-centering bushing, 3-locating pin, 4-locating plate, 5-semicircular arc forming hole.
[0013] Figure 4 It is a structural schematic diagram of the centering and alignment of the closing upper die and the centering bushing of the present invention.
[0014] Figure 5 It is a structural schematic diagram of the non-insert self-locking nut of the present invention installed on the positioning pin.
[0015] Figure 6 It is a schematic diagram of the closing molding structure of the non-metallic insert self-locking nut of the present invention. DETAILED DESCRIPTION
[0016] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0017] Non-metallic insert self-locking nut closing tooling, such as Figure 3 As shown: it includes a closing upper die 1, a centering bushing 2, a positioning pin 3 and a positioning plate 4; The centering bushing 2 is installed in the positioning hole on the upper part of the positioning plate 4; The positioning pin 3 is installed into the upper center of the positioning plate 4; The closing end of the closing upper die 1 is installed in the centering bushing 2 for centering and alignment, which solves the technical problem that the traditional closing tooling has no centering sleeve, which makes the closing die more troublesome and time-consuming to center, and requires a high level of skills of the closing personnel; The lower part of the closing upper die 1 is provided with a semicircular arc forming hole 5 which is consistent with the outer dimensions of the metal insert self-locking nut. The hole effectively solves the technical problem that the closing upper die forming part of the traditional closing tooling has no semicircular arc and is a straight segment structure, resulting in that after the non-metallic insert self-locking nut is closed, the metal nut body part does not wrap the non-metallic insert tightly, resulting in the bolt pushing the non-metallic insert out of the nut body during the process of screwing in the bolt, thus losing the self-locking function and causing a greater risk of use; The material of the closing upper die 1 is Cr12MoV. After quenching and tempering heat treatment, the hardness reaches HRC58-62. The final surface treatment of the closing upper die 1 is cleaning and passivation. The material of the positioning pin 3 is PA1010 nylon rod, which can effectively prevent damage to the internal thread of the self-locking nut; the materials of the other components are 45 steel.
[0018] The closing tool is based on the metal nut body, such as Figure 1 and Figure 2 As shown: The overall dimensions are used as the design basis for the tooling, and based on the actual assembly and use requirements, a compression tooling is designed that can be quickly centered and has a stable structure after closing.
[0019] The method of using the present invention is as follows: 1) First, place the positioning plate 4 on the hydraulic press tooling platform, install the centering bushing 2 into the positioning hole of the positioning plate 4, and then put the closing end of the closing upper die 1 into the centering bushing 2 for centering and alignment. Figure 4 As shown; 2) Then connect the closing upper die 1 to the hydraulic press, install the locating pin 3 into the locating plate 4, and then install the non-insert self-locking nut on the locating pin 3, as shown in the figure. Figure 5 As shown; 3) Finally, adjust the height of the hydraulic press to close the mouth, such as Figure 6 shown.
[0020] Compared with the traditional non-insert self-locking nut closing tooling, the present invention can bring the following beneficial effects: 1. Easy to use, requiring low operator skill level; 2. High closing efficiency, reducing production costs; 3. After closing, the product structure is stable and reliable, reducing the risk of product use; 4. The closing tooling has a simple structure, is easy to process and manufacture, and has low cost.
Claims
1. Non-metallic insert self-locking nut closing tooling, characterized by: It comprises a closing upper die (1), a centering bushing (2), a positioning pin (3) and a positioning plate (4); The centering bushing (2) is installed in the positioning hole on the upper part of the positioning plate (4); The positioning pin (3) is inserted into the upper center of the positioning plate (4); The closing end of the closing upper die (1) is inserted into the centering bushing (2) for centering and alignment; The lower part of the closing upper die (1) is provided with a semi-circular arc forming hole (5) having the same outer dimensions as the metal insert self-locking nut; The material of the closing upper die (1) is Cr12MoV, and after quenching and tempering heat treatment, the hardness reaches HRC58-62. The final surface treatment of the closing upper die (1) is cleaning and passivation; The positioning pin (3) is made of PA1010 nylon rod; The positioning plate (4) and the centering bushing (2) are made of 45 steel.