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UHM32 Horizontal Overhanging Arm Milling Machine
The overarm is used to fastened arbor support. Over Arm / Overhanging Arm of UHM32 Horizontal Overhanging Arm Milling Machine may consist of one or two cylindrical bars which slide through the holes in the column.
- UHM32 UHM32C UHM32CL Horizontal Overhanging Arm Milling MachineDownload
Machine specifications
Equipments
Optionals
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine is a horizontal beam present at the top face of the column. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may be a single casting which slides on the dovetail ways present on the top face of the column.
The overarm is used to fastened arbor support. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may consist of one or two cylindrical bars which slide through the holes in the column.
Horizontal Milling Machine Construction
The main part of Horizontal Milling Machine is base, Column, Knee, Saddle, Table, Overarm, Arbor Support and Elevating Screw.
1. Horizontal Milling Machine Base: It gives support and rigidity to the machine and also acts as a reservoir for the cutting fluids.
2. The Mill Column: The column of Horizontal Knee type Milling Machine is the main supporting frame mounted vertically on the base. The column is box shaped, heavily ribbed inside and houses all the driving mechanisms for the spindle and table feed.
3. The Mill Machine Knee: The knee is a rigid casting mounted on the front face of the column. The knee moves vertically along the guide ways and this movement enables to adjust the distance between the cutter and the job mounted on the table. The adjustment is obtained manually or automatically by operating the elevating screw provided below the knee.
4. The Mill Machine Saddle: The saddle rests on the knee and constitutes the intermediate part between the knee and the table. The saddle moves transversely, i.e., crosswise (in or out) on guide ways provided on the knee.
5. The Mill Machine Table: The table rests on guide ways in the saddle and provides support to the work. The table is made of cast iron, its top surface is accurately machined and carriers T-slots which accommodate the clamping bolt for fixing the work. The worktable and hence the job fitted on it is given motions in three directions:
. Vertical (up and down) movement provided by raising or lowering the knee.
. Cross (in or out) or transverse motion provided by moving the saddle in relation to knee.
. Longitudinal (back and forth) motion provided by hand wheel fitted on the side of feed screw.
In addition to the above motions, the table of a universal milling machine can be swiveled 45° to either side of the centre line and thus fed at an angle to the spindle.
6. The Milli Arbor support: The arbor support is fitted to the Overarm and can be clamped at any location on the Overarm. Its function is to align and support various arbors. The arbor is a machined shaft that holds and drives the cutters.
8. The Milli Elevating screw: The upward and downward movement to the knee and the table is given by the elevating screw that is operated by hand or an automatic feed.
| Items | UHM32 | UHM32C | UHM32CL |
| Working area | |||
| Worktable size (L×W) | 1325x320mm | 1325x320mm | 1600x320mm |
| T slot (Width x No. x pitch) | 18x3x70mm | 18x3x70mm | 18x3x70mm |
| Max. load of table | 500kg | 500kg | 500kg |
| Table rotation | optional: ±45° | optional: ±45° | no |
| Distance from horizontal spindle center to worktable surface | 20-470mm | 20-470mm | 20-470mm |
| Travels | |||
| Worktable travel (X) | 750mm | 1100mm | 1300mm |
| Worktable travel (Y) | 320mm | 320mm | 320mm |
| Worktable travel (Z) | 450mm | 450mm | 450mm |
| Spindle | |||
| Horizontal spindle speed | 12 steps; 60-1800rpm |
12 steps; 60-1800rpm |
12 steps; 60-1800rpm |
| Spindle taper | 7:24, ISO50 | 7:24, ISO50 | 7:24, ISO50 |
| Motor power | 5.5kW | 5.5kW | 5.5kW |
| Feed | |||
| Rapid feed (X/Y/Z) | 1200/800/600mm/min | 1200/800/600mm/min | 1200/800/600mm/min |
| Feed range (X) | 30-750mm/min | 30-830mm/min | 30-830mm/min |
| Feed range (Y) | 20-500mm/min | 20-500mm/min | 20-500mm/min |
| Feed range (Z) | 15-375mm/min | 15-375mm/min | 15-375mm/min |
| Others | |||
| Machine size (L×W×H) | 1800x2100x1870mm | 2245x2100x1870mm | 2520x2100x1870mm |
| Net weight | 2400kg | 2465kg | 2510kg |
Equipments
| Item 01 | Descriptions | |
| 01.01 | Draw bar | |
| 01.02 | Lifting crank | |
| 01.03 | Horizontal arbor assembly; | |
| 01.04 | Working lamp | |
| 01.05 | Coolant system | |
| 01.06 | Central lubrication | |
| 01.07 | Double-ended wrench | |
| 01.08 | Inner hexagon spanner | |
| 01.09 | Vertical milling head(ISO40) | |
| 01.10 | Operator manual |
| Item 02 | Descriptions | |
| 02.01 | 3-aixs Digital Read Out | |
| 02.02 | Work table rotary±45°(not equipped on UHM32CL) | |
| 02.03 | Hang up panel(Aluminum) | |
| 02.04 | Dividing head | |
| 02.05 | Rotary table | |
| 02.06 | Machine vise | |
| 02.07 | Milling chuck (ISO40) | |
| 02.08 | Clamping kits |
Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine is a horizontal beam present at the top face of the column. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may be a single casting which slides on the dovetail ways present on the top face of the column.
The overarm is used to fastened arbor support. Over Arm / Overhanging Arm of Heavy-duty Horizontal Milling Machine may consist of one or two cylindrical bars which slide through the holes in the column.
Horizontal Milling Machine Construction
The main part of Horizontal Milling Machine is base, Column, Knee, Saddle, Table, Overarm, Arbor Support and Elevating Screw.
1. Horizontal Milling Machine Base: It gives support and rigidity to the machine and also acts as a reservoir for the cutting fluids.
2. The Mill Column: The column of Horizontal Knee type Milling Machine is the main supporting frame mounted vertically on the base. The column is box shaped, heavily ribbed inside and houses all the driving mechanisms for the spindle and table feed.
3. The Mill Machine Knee: The knee is a rigid casting mounted on the front face of the column. The knee moves vertically along the guide ways and this movement enables to adjust the distance between the cutter and the job mounted on the table. The adjustment is obtained manually or automatically by operating the elevating screw provided below the knee.
4. The Mill Machine Saddle: The saddle rests on the knee and constitutes the intermediate part between the knee and the table. The saddle moves transversely, i.e., crosswise (in or out) on guide ways provided on the knee.
5. The Mill Machine Table: The table rests on guide ways in the saddle and provides support to the work. The table is made of cast iron, its top surface is accurately machined and carriers T-slots which accommodate the clamping bolt for fixing the work. The worktable and hence the job fitted on it is given motions in three directions:
. Vertical (up and down) movement provided by raising or lowering the knee.
. Cross (in or out) or transverse motion provided by moving the saddle in relation to knee.
. Longitudinal (back and forth) motion provided by hand wheel fitted on the side of feed screw.
In addition to the above motions, the table of a universal milling machine can be swiveled 45° to either side of the centre line and thus fed at an angle to the spindle.
6. The Milli Arbor support: The arbor support is fitted to the Overarm and can be clamped at any location on the Overarm. Its function is to align and support various arbors. The arbor is a machined shaft that holds and drives the cutters.
8. The Milli Elevating screw: The upward and downward movement to the knee and the table is given by the elevating screw that is operated by hand or an automatic feed.
| Item 01 | Descriptions | |
| 01.01 | Draw bar | |
| 01.02 | Lifting crank | |
| 01.03 | Horizontal arbor assembly; | |
| 01.04 | Working lamp | |
| 01.05 | Coolant system | |
| 01.06 | Central lubrication | |
| 01.07 | Double-ended wrench | |
| 01.08 | Inner hexagon spanner | |
| 01.09 | Vertical milling head(ISO40) | |
| 01.10 | Operator manual |
| Item 02 | Descriptions | |
| 02.01 | 3-aixs Digital Read Out | |
| 02.02 | Work table rotary±45°(not equipped on UHM32CL) | |
| 02.03 | Hang up panel(Aluminum) | |
| 02.04 | Dividing head | |
| 02.05 | Rotary table | |
| 02.06 | Machine vise | |
| 02.07 | Milling chuck (ISO40) | |
| 02.08 | Clamping kits |
- Massive machine frame with very rigid knee slide;
- Powerful gear-driven head for heavy cutting;
- Driven by AC servo motor to achieve automatic table feed and rapid feed on X, Y and Z axes;
- Hardened and ground table for precision clamping and heavy load;
- Worktable swivels ±45° on the horizontal plane is optional;
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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.