Mounting structure of a press drive shaft

Abstract

The utility model discloses a mounting structure of transmission shaft of press, including mandrel, crossbeam, the both ends of mandrel are equipped with crossbeam, is equipped with the spacer bush between crossbeam inner wall and mandrel outer wall, and the outer wall of one end port of spacer bush is equipped with the outer circle bulge, and the inner wall of both ends port of crossbeam is equipped with the corresponding annular groove.

Description

Technical Field

[0001] This utility model relates to an installation structure for a press drive shaft. Background Technology

[0002] In mechanical equipment such as presses, the connection structure between the drive shaft and the crossbeam is a crucial component ensuring the stability and accuracy of the entire machine's operation. Traditional connection methods typically employ direct interference fits or threaded connections to create a fixed bond between the spindle and the crossbeam. However, these traditional methods have several technical limitations.

[0003] First, direct connection can easily lead to severe friction between metal contact surfaces, resulting in wear, loosening, and even structural fatigue and failure under high-frequency reciprocating motion or high-load conditions. Furthermore, the lack of effective axial limiting mechanisms can cause the crossbeam to move axially during operation, affecting working accuracy and increasing the risk of mechanical damage.

[0004] Secondly, traditional structures are more difficult to assemble and disassemble, usually requiring precise alignment and specialized tools, which increases assembly time and maintenance costs. When the structure is damaged or loose, repair and replacement are inconvenient, seriously affecting the operating efficiency and maintainability of the equipment.

[0005] In addition, some systems use all-metal components to improve connection strength, but this not only increases the overall weight and energy consumption, but also exacerbates wear and vibration transmission problems, which has an adverse effect on the lifespan and performance of the whole machine.

[0006] Therefore, there is an urgent need for a new type of installation structure that can reduce axial and radial displacement, reduce wear, and improve assembly efficiency while ensuring connection strength and stability, and also has good buffering, limiting and maintenance convenience, so as to meet the requirements of modern press systems for high precision, high stability and high efficiency. Utility model content:

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an installation structure for the transmission shaft of a press.

[0008] An installation structure for a press drive shaft includes a mandrel and a crossbeam. The crossbeam is fitted at both ends of the mandrel. A spacer is provided between the inner wall of the crossbeam and the outer wall of the mandrel. An outer circular protrusion is provided on the outer wall of one end of the spacer, and corresponding annular grooves are provided on the inner walls of both ends of the crossbeam.

[0009] Furthermore, the raised corners of the outer circle are chamfered.

[0010] Furthermore, the material of the spacer is nylon.

[0011] Furthermore, thrust rings are provided at both ends of the mandrel to restrict axial movement of the mandrel.

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

[0013] Firstly, by installing a spacer between the spindle and the crossbeam, a transitional connection is achieved between the two, effectively avoiding wear problems caused by direct contact and significantly improving the system's durability and reliability. The spacer not only provides axial positioning by engaging with the crossbeam's annular groove through its outer circumference protrusion, preventing axial displacement of the crossbeam, but also provides radial buffering and support, contributing to improved coaxiality and operational stability of the overall structure.

[0014] Secondly, the design of this structure fully considers the convenience and reliability of the assembly process. The chamfered edges on the outer circumference of the spacer not only reduce stress concentration and the risk of interference damage, but also act as guides, improving assembly smoothness and accuracy. This design optimizes the structural matching of the beam ends, reduces the difficulty of manual intervention, significantly improves installation efficiency, and extends the service life of related components.

[0015] Furthermore, the use of nylon for the spacer offers multiple material advantages. Nylon possesses excellent self-lubricating properties, wear resistance, and elasticity, effectively absorbing mechanical shocks and reducing wear. Simultaneously, its lightweight and easy machinability facilitate standardized production and maintenance replacement. Compared to metal materials, nylon also reduces system energy consumption and heat accumulation, thereby improving the service life and operating efficiency of transmission components.

[0016] Finally, thrust rings are installed at both ends of the mandrel to further enhance the stability of axial positioning. The thrust rings effectively prevent axial movement of the mandrel under load, maintaining the overall fit accuracy of the structure and avoiding component loosening or premature failure. This structure also facilitates disassembly and maintenance, making it particularly suitable for high-speed, high-load press operations, significantly improving the system's operational safety and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mounting structure of a press drive shaft;

[0018] In the diagram, 1 is the spindle, 2 is the spacer, and 3 is the crossbeam. Detailed Implementation

[0019] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0020] An installation structure for a press drive shaft includes a mandrel 1 and a crossbeam 3. The crossbeam 3 is sleeved at both ends of the mandrel 1. A spacer 2 is provided between the inner wall of the crossbeam 3 and the outer wall of the mandrel 1. An outer circular protrusion is provided on the outer wall of one end of the spacer 2. Corresponding annular grooves are provided on the inner walls of both ends of the crossbeam 3.

[0021] This mounting structure achieves a transitional connection between the mandrel 1 and the crossbeam 3 by setting a spacer 2 between them, avoiding the wear problems caused by direct contact. One end of the spacer 2 has an outer circumferential protrusion that mates with the annular groove at the end of the crossbeam 3. When the crossbeam 3 is assembled on the mandrel 1, the outer circumferential protrusion is embedded in the annular groove, which acts as an axial limit, effectively preventing axial displacement of the crossbeam 3 on the mandrel 1. At the same time, the spacer 2 also acts as a buffer and support in the radial direction, improving the coaxiality and stability of the entire mounting structure.

[0022] The aforementioned mounting structure effectively improves the stability and reliability of the connection between the mandrel 1 and the crossbeam 3, reducing the risk of mechanical failure caused by axial displacement. The spacer 2 reduces friction and wear, extends service life, and facilitates disassembly and maintenance, improving assembly efficiency. Furthermore, the structure is simple in design, has high component versatility, and possesses good processing adaptability and mass production feasibility.

[0023] In one possible implementation, the protruding corners of the outer circle are provided with a chamfered structure.

[0024] The outer circular protrusion serves as a structural part that mates with the annular groove at the end of the spacer 2 and the crossbeam 3. Its corners are chamfered to effectively alleviate stress concentration caused by sharp edges during assembly, thereby improving assembly smoothness and reducing the risk of damage due to interference. The chamfer also acts as a guide during the insertion of the spacer 2 into the crossbeam 3, helping the protrusion smoothly enter the annular groove and ensuring the accuracy of the assembly position and the stability of the overall structure.

[0025] The chamfered structure improves the convenience and reliability of the installation process, reduces the difficulty of manual intervention, decreases the probability of assembly damage, and extends the service life of the spacer 2 and the crossbeam 3. At the same time, this structure optimizes the structural matching of the ends of the crossbeam 3, improves installation efficiency, ensures high-precision coaxiality between the spindle 1 and the crossbeam 3, and enhances the overall operational stability of the machine.

[0026] In one possible implementation, the material of the spacer 2 is nylon.

[0027] Using nylon as the material for spacer 2 provides excellent self-lubrication and wear resistance, effectively mitigating relative wear between the mandrel 1 and the crossbeam 3 during press vibration and high-frequency reciprocating motion. Nylon also possesses elasticity and impact resistance, absorbing some mechanical impact energy and reducing the transmission of structural impact loads. Furthermore, nylon is lightweight, easy to process, and suitable for various assembly methods, facilitating standardized replacement.

[0028] Using nylon material as the spacer 2 effectively improves the durability and maintenance efficiency of the connecting components between the mandrel 1 and the crossbeam 3. Compared to metal materials, nylon can reduce the coefficient of friction, reduce energy consumption and heat accumulation, and extend the service life of related components. The ease of processing and replacement of nylon also significantly reduces maintenance costs and system downtime.

[0029] In one possible implementation, thrust rings are provided at both ends of the mandrel 1 to restrict the axial movement of the mandrel 1.

[0030] Thrust rings are located at both ends of the mandrel 1, serving as axial limiting elements and playing a stabilizing role in the mating structure between the crossbeam 3 and the mandrel 1. When the press generates axial loads during operation, the thrust rings prevent the mandrel 1 from axially shifting within the structure, ensuring that the mandrel 1, spacer 2, and crossbeam 3 maintain a relatively fixed position, thereby maintaining the transmission accuracy and stability of the entire machine. Thrust rings are typically installed in conjunction with shaft end slots or positioning shoulders to achieve a reliable limiting function.

[0031] The thrust ring improves the axial positioning reliability of the entire transmission system, effectively preventing component loosening or wear failure caused by the movement of the mandrel 1. This structure also simplifies maintenance and installation processes, enhances the safety and stability of the press operation, and is particularly suitable for press systems operating at high speeds or high loads.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mounting structure for a press drive shaft, characterized in that, It includes a mandrel and a crossbeam. The crossbeam is fitted at both ends of the mandrel. A spacer is provided between the inner wall of the crossbeam and the outer wall of the mandrel. The outer wall of one end of the spacer is provided with an outer circular protrusion. The inner walls of both ends of the crossbeam are provided with corresponding annular grooves.

2. The installation structure according to claim 1, characterized in that, The raised edges and corners of the outer circle are chamfered.

3. The installation structure according to claim 1, characterized in that, The spacer is made of nylon.

4. The installation structure according to claim 1, characterized in that, Thrust rings are provided at both ends of the mandrel to restrict axial movement of the mandrel.

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