T-slot plate splicing combination case

T-Slot Plate Splicing Combination Case

T-slot plates,known for their modularity and high precision,are widely used in industrial manufacturing,especially in scenarios requiring large-scale workbench surfaces or customized layouts.By splicing multiple standard T-slot plates,enterprises can flexibly meet the needs of large workpiece processing,multi-station assembly,or complex testing.Below is a practical application case to illustrate the splicing combination scheme,advantages,and key considerations.

Case Background

A heavy machinery manufacturer needs to process a large excavator boom(length 12m,width 2.5m,weight 8 tons).The processing involves welding,drilling,and dimensional inspection,requiring a stable and adjustable workbench with high flatness.Due to the boom’s large size,a single T-slot plate cannot meet the length and width requirements,so a splicing scheme using multiple standard T-slot plates is adopted.

Splicing Combination Scheme

Selection of T-slot Plates

Standard plates:6 pieces of 4m×1.25m T-slot plates(material:HT300 gray cast iron,precision grade 2,surface flatness≤0.02mm/m,T-slot specification:22mm×100mm spacing).

Reason for selection:The 4m length is easy to transport and store;1.25m width ensures sufficient bearing capacity(each plate can bear≥5 tons);grade 2 precision meets the flatness requirement for welding and drilling.

Splicing Layout

Arrange 3 plates in length direction(4m×3=12m)and 2 plates in width direction(1.25m×2=2.5m),forming a 12m×2.5m integrated workbench.

Connection method:Use high-strength bolts(M20)to fix adjacent plates through pre-drilled positioning holes(diameter 22mm)at the edges.The gaps between plates are controlled within 0.05mm by grinding the splicing surfaces.

Auxiliary Fixing

Install alignment pins(diameter 30mm,tolerance H7)at the splicing joints to ensure positional accuracy between plates(coaxiality error≤0.03mm).

Use adjustable support feet under each T-slot plate to fine-tune the overall flatness,making the maximum flatness error of the spliced workbench≤0.1mm/m after adjustment.

Application Process

Welding Stage

The spliced T-slot workbench provides a stable base for the boom welding.Workers fix the boom segments using T-slot bolts and clamps,leveraging the uniform T-slot distribution(100mm spacing)to adjust the position flexibly.The high rigidity of the spliced plates absorbs welding vibration,reducing welding deformation.

Drilling Stage

After welding,the boom is transferred to the same spliced workbench for drilling.The workbench’s high flatness ensures the boom’s positioning accuracy,and the T-slots allow quick installation of drilling fixtures,improving hole position precision(±0.1mm).

Inspection Stage

The spliced workbench serves as a temporary inspection platform.Using a laser level and dial indicator,inspectors measure the boom’s straightness and perpendicularity,with the workbench itself as the reference plane,ensuring inspection data reliability.

Advantages of Splicing Combination

Flexibility:Standard plates can be spliced into different sizes(e.g.,12m×2.5m in this case)to adapt to workpieces of varying dimensions,avoiding the high cost of custom large single plates.

Cost-effectiveness:Splicing reduces transportation and storage difficulties—standard T-slot plates(4m×1.25m)are easier to transport than a 12m single plate,lowering logistics costs.

Maintainability:If a local plate is worn or damaged,only the affected plate needs replacement,instead of the entire workbench,reducing maintenance costs.

Reusability:After the project,the spliced plates can be disassembled and reused in other small-scale projects,improving resource utilization.

Key Considerations for Splicing

Flatness Control:Ensure the splicing surfaces are precision-machined(Ra≤1.6μm)and use adjustable feet to calibrate overall flatness,avoiding stress concentration caused by unevenness.

Connection Reliability:Use high-strength bolts and alignment pins to prevent relative displacement between plates during heavy load or vibration.

Material Consistency:Select T-slot plates of the same material(e.g.,HT300)and heat treatment process to avoid uneven thermal expansion due to material differences,ensuring long-term stability.

In conclusion,T-slot plate splicing is a practical solution for large-scale industrial applications,balancing precision,flexibility,and cost.By rationally designing the splicing scheme and controlling key parameters,enterprises can efficiently meet the needs of large workpiece processing and assembly.