Sliding Face Wear Prevention in Casting Breaking Tool Posts
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Solution Overview
Problem
Existing casting breaking apparatuses face issues with wear on sliding faces due to particle invasion, leading to accelerated wear and maintenance challenges, particularly in metal structures with axially fixed portions.
Innovation Solution
The apparatus features cut recess portions on sliding faces of the tool support base and post, subjected to overlay welding, with the welds polished to be flush with the surface, reducing wear and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the other side tool support base and/or other side tool post are made to be movable by sliding contact with the side plate, then the casting waste can be broken effectively, but wear is generated on the sliding face and maintenance becomes difficult
Solution Approach 1:
The sliding face is subjected to overlay welding only in the local area where wear occurs, creating a hardened layer specifically at the contact surface. This localized treatment provides wear resistance without requiring reinforcement of the entire component, thus maintaining mobility while preventing wear on the sliding face.
Solution Approach 2:
The sliding face is constructed as a composite structure combining the base material with an overlay welding layer. This composite structure combines the advantages of the base material (mobility, structural integrity) with the overlay material (wear resistance, hardness), creating a multi-functional surface that addresses both breaking effectiveness and wear resistance.
2Reliability
If overlay welding is performed on the sliding face to prevent wear, then wear resistance is improved, but the sliding face may become rough and mobility is reduced
Solution Approach 1:
The sliding face is subjected to grinding treatment after overlay welding to remove surface irregularities and restore smoothness. This preliminary action (grinding) is performed to ensure that the sliding face maintains its mobility characteristics while retaining the wear resistance provided by the overlay welding.
Solution Approach 2:
The surface finish parameter of the sliding face is controlled and optimized through grinding treatment. By adjusting grinding parameters (pressure, speed, abrasive type), the surface is finished to achieve the right balance between wear resistance from the overlay and smoothness for mobility, transforming the physical state of the surface.
3Strength
If the axially fixed portion is made robust to withstand large loads, then structural strength is improved, but the complexity of the metal structure increases and maintenance standardization becomes difficult
Solution Approach 1:
The axially fixed portion is designed as a separate, modular component that can be independently manufactured and maintained. This segmentation allows the load-bearing structure to be optimized for strength while maintaining simplicity in its design, as each segment can be produced using standardized processes and replaced independently if needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively prevents wear on sliding faces, even when particles invade the gap, and improves maintenance by reducing wear on impact-prone areas, enhancing the apparatus's longevity and operational efficiency.
Implementation Method 1
the cut recess portion is subjected to overlay welding
Implementation Method 2
an overlay weld substantially flush with the sliding face is formed by polishing means for making the overlayer of the overlay welding substantially flush with the sliding face
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
In a background art, one side and other side tool apparatus (casting breaking apparatus) upper and lower faces of which are opened are constituted by one side and other side tool support bases, one side and other side tool posts provided at the one side and the other side tool support bases, a number of pieces of one side and other side tools in a ridge shape projected from the one side and the other side tool posts respectively in a zigzag shape and brought into a fitting relationship, and movable means (cylinder) for making the other side tool post movable, and characterized in that sliding faces provided at both sides of the other side tool support base and/or the other side tool post are advanced and retreated along an inner face of a side plate. Further, explaining an operation (method) of crushing and breaking of the casting breaking apparatus, in retreating the other side tool post, a casting waste is thrown from a throwing opening (throwing port) formed between the other side tool post and the one side tool post, and the casting waste is broken by utilizing a fitting relationship between the other side tool of the other side tool post advanced by the cylinder and the one side tool of the one side tool post. The sliding face of the other side tool post is advanced or retreated to be brought into sliding contact with the side plate of the breaking apparatus. By the advance, the casting waste thrown to the casting breaking apparatus is broken, and by the retreat, a broken piece of the broken casting waste is discharged from a discharge port formed between the other side tool post and the one side tool post by natural dropping. Further, according to the kind of apparatus, the other side tool post is brought into sliding contact with the side plate when the other side tool post is made to be movable, and there is a probability of generating wear at the face to be slid (sliding face). Further, when a particle, or a small piece of the casting waste invades a gap between the other side tool post and the side plate, a problem of accelerating a degree of the wear is conceivable. In view of the above-described, according to the invention, by constituting other side tool support base and/or other side tool post mounted to a casting breaking apparatus constructed by a constitution in which both sides of other side tool support base and/or other side tool post are formed with sliding faces brought into sliding contact with both side plates, the sliding face is formed with a cut recess streak reaching upper and lower sides of the sliding face, the cut recess streak is subjected to overlay welding, and an overlay weld streak piece substantially in flush with the sliding face is formed by polishing means for making an overlayer of Lhe overlay welding substantially in flush with the sliding face, it is intended to make wear of the sliding face as less as possible, or, when a particle or a small piece of the casting waste invades a gap between the other side tool support base and/or the other side tool post and the side plate, a degree of wear is accelerated, and therefore, it is intended to avoid the wear. Further, according to the invention, an axially fixed portion provided at the side plate of supporting the other side tool support base is constituted by a bearing provided at the side plate, a thin-walled ring-like metal provided at an inner peripheral face of the bearing, and dust seals provided at both ends of the inner peripheral face of the bearing, and it is intended to protect the axially fixed portion of the other side tool support base on a movable side applied with a load, or swiftly execute repair in failure.