PB Series Pre-Bending Machine
PB Series Pre-Bending Machine
Introduction
Plate crimping press is widely used in LSAW pipe production. As a metal forming machine manufacturer in China, we supply PB series crimping press machines. They are designed to crimp both edges of metal plates to form a curvature radius of plate edges close to curvature radius of finished pipe. Generally, this type of plate crimping press is composed of C-frames, oil cylinder units, lower tool beam, transporting roller on frame, tool changing device, tools, tool moving device, pedestal, front and rear roller tables, electrical system, as well as hydraulic and lubrication systems. During the pre-bending process, plates are fed into upper and lower tools step by step after milling. The pressing force comes between the two tools of the crimping press machines. In order to make crimped edge curvature radius become very close to the curvature radius of finished pipe, tools position should be changed and adjusted several times. Usually two plate crimping press are set oppositely and synchronously pre-bend the plate laterally. It is suitable for the steel pipe with the maximum thickness of 40 mm.
Characteristics
1. PB series crimping press machines features in good stiffness and high accuracy with C-shaped frame structure.
2. Characterized by CNC movable base, this type of plate crimping press can be applied to plates with different widths.
3. Double cylinders are controlled by electro hydraulic servo system independently, which allows uniformity of the bending edges.
4. During the whole pre-bending process, material follow-up supporting can be achieved.
5. The plate crimping press is equipped with lifting appliance, making quick replacement of molds possible.
6. Our crimping press machines adopt DM 51 CNC system with fieldbus control technology applied.
7. CNC feeding and discharging rollers are one key component of the pre-bending machine. Automatic segmentation of feeding ensures the accuracy of plate transportation.
1. PB series crimping press machines features in good stiffness and high accuracy with C-shaped frame structure.
2. Characterized by CNC movable base, this type of plate crimping press can be applied to plates with different widths.
3. Double cylinders are controlled by electro hydraulic servo system independently, which allows uniformity of the bending edges.
4. During the whole pre-bending process, material follow-up supporting can be achieved.
5. The plate crimping press is equipped with lifting appliance, making quick replacement of molds possible.
6. Our crimping press machines adopt DM 51 CNC system with fieldbus control technology applied.
7. CNC feeding and discharging rollers are one key component of the pre-bending machine. Automatic segmentation of feeding ensures the accuracy of plate transportation.
Introduction
Plate crimping press is widely used in LSAW pipe production. As a metal forming machine manufacturer in China, we supply PB series crimping press machines. They are designed to crimp both edges of metal plates to form a curvature radius of plate edges close to curvature radius of finished pipe. Generally, this type of plate crimping press is composed of C-frames, oil cylinder units, lower tool beam, transporting roller on frame, tool changing device, tools, tool moving device, pedestal, front and rear roller tables, electrical system, as well as hydraulic and lubrication systems. During the pre-bending process, plates are fed into upper and lower tools step by step after milling. The pressing force comes between the two tools of the crimping press machines. In order to make crimped edge curvature radius become very close to the curvature radius of finished pipe, tools position should be changed and adjusted several times. Usually two plate crimping press are set oppositely and synchronously pre-bend the plate laterally. It is suitable for the steel pipe with the maximum thickness of 40 mm.
Knee Type Milling Machine: Precision Versatility for Industrial Manufacturing
What is a Knee Type Milling Machine?
A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.
Working Principle
The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.
Key Applications
- Tool & Die Making: Precision molds, jigs, fixtures
- Prototyping: Rapid part development
- Maintenance Shops: Equipment repair & part fabrication
- General Machining: Slotting, drilling, facing, keyway cutting
- Aerospace & Automotive: Component manufacturing
Distinctive Features & Advantages
- Vertical Adjustability: Knee movement enables quick workpiece height changes
- Rigid Construction: Robust cast iron frame ensures stability
- Manual & CNC Options: Traditional control or computer numerical precision
- Turret Design (Common): Swiveling milling head for multi-angle machining
- Wide Workpiece Compatibility: Handles various sizes and shapes
Primary Classifications
- Vertical Knee Mill: Spindle axis perpendicular to table (most common)
- Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
- Universal Knee Mill: Table swivels for complex angular cuts
- Turret Mill: Head rotates on turret for flexible positioning
Main Components
- Base & Column: Primary support structure
- Knee: Vertically moving saddle supporting the table
- Saddle & Table: Hold and position the workpiece (X/Y axes)
- Milling Head: Houses spindle, motor, and quill (Z-axis)
- Arbor/Spindle: Rotating shaft holding cutting tools
- Controls: Manual handwheels or CNC interface
Evolution & Industry Significance
Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.
Fortune Pacific: Your Knee Mill Solution
At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.
Keywords: Knee Type Milling Machine, Vertical Milling Machine, Horizontal Mill, Turret Mill, Knee-and-Column Mill, Milling Machine for Sale, Industrial Milling, Metalworking Equipment, Workshop Machinery, CNC Mill, Toolroom Mill, Precision Machining, Fortune Pacific, Machine Tool Manufacturer.