Manual Feed, Spindle Speed | Southbend SB instruction

	O P E R A T I O N
For Machines Mfg. Since 5/11	O P E R A T I O N	13" Heavy 13® Gearhead Lathe

Manual Feed

The handwheels shown in Figure 64 allow the operator to manually move the cutting tool.

Cross Slide	Compound
Handwheel	Rest
	Handwheel
Carriage
Handwheel

Figure 64. Carriage Controls.

Carriage Handwheel

The carriage handwheel moves the carriage left or right along the bed. It has a graduated dial with 0.01" increments, and one full revolution moves the carriage 0.80". Pull the handwheel out to disengage it during power feed operations— this will prevent entanglement hazards.

Cross Slide Handwheel

The cross slide handwheel moves the tool toward and away from the work. Adjust the position of the graduated scale by holding the handwheel with one hand and turning the dial with the other. The cross slide handwheel has a direct- read graduated dial which means that the distance on the dial reflects the amount removed from the diameter of the workpiece. The dial has 0.001" (0.02mm) increments, and one full revolution moves the slide 0.100" (5.08mm). Rotate the dial collar 180° to read in metric units.

Compound Rest Handwheel

The compound rest handwheel moves the cutting tool linearly along the set angle of the compound rest. The compound rest angle is set by hand- rotating it and securing in place with two hex nuts. The compound rest has an indirect-read graduated dial with 0.001" (0.02mm) increments. One full revolution of the handwheel moves the slide 0.100" (2.54mm). Rotate the dial collar 180° to read in metric units.

Spindle Speed

Using the correct spindle speed is important for safe and satisfactory results, as well as maximizing tool life.

To set the spindle speed for your operation, you will need to: 1) Determine the best spindle speed for the cutting task, and 2) configure the lathe controls to produce the required spindle speed.

Determining Spindle Speed

Many variables affect the optimum spindle speed to use for any given operation, but the two most important are the recommended cutting speed for the workpiece material and the diameter of the workpiece, as noted in the formula shown in

Figure 65.

*Recommended

Cutting Speed (FPM) x 12

= SpindleSpeed (RPM)

Dia. of Cut (in inches) x 3.14

*Double if using carbide cutting tool

Figure 65. Spindle speed formula for lathes.

Cutting speed, typically defined in feet per minute (FPM), is the speed at which the edge of a tool moves across the material surface.

A recommended cutting speed is an ideal speed for cutting a type of material in order to produce the desired finish and optimize tool life.

The books Machinery’s Handbook or Machine Shop Practice, and some internet sites, provide excellent recommendations for which cutting speeds to use when calculating the spindle speed. These sources also provide a wealth of additional information about the variables that affect cutting speed and they are a good educational resource.

Also, there are a large number of easy-to-use spindle speed calculators that can be found on the internet. These sources will help you take into account the applicable variables in order to determine the best spindle speed for the operation.

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SB specifications

The Southbend 1368,SB is a versatile and robust commercial range designed for professional kitchens that demand high performance, reliability, and efficiency. This model is widely recognized for its solid construction and user-friendly features, making it a preferred choice among chefs and restaurant operators.

One of the standout features of the Southbend 1368,SB is its powerful burners. Equipped with six high-output burners, each producing 33,000 BTUs, this range delivers exceptional cooking power, allowing chefs to boil, sauté, and simmer with ease. The burners are designed with heavy-duty cast iron grates that not only provide durability but also ensure optimal heat distribution across the cooking surface, enhancing culinary results.

The range also includes a spacious oven with a capacity of 40,000 BTUs, which is perfect for baking, roasting, and broiling various dishes. The oven features a thermostat that allows for precise temperature control, ensuring that dishes are cooked to perfection every time. Additionally, the oven's interior is made from stainless steel, which offers excellent heat retention and is easy to clean.

Another notable characteristic of the Southbend 1368,SB is its construction. Built with a heavy-duty stainless steel exterior, this range is not only aesthetically pleasing but also resistant to corrosion and wear. The front, sides, and top are all designed for durability, making it suitable for high-traffic kitchen environments.

In terms of technological advancements, the Southbend 1368,SB is equipped with modular components that can be easily customized to meet specific cooking needs. This flexibility allows operators to configure the range for various cooking tasks, accommodating everything from grilling to frying.

Safety is also a significant consideration in the design of the Southbend 1368,SB. The range includes flame failure safety devices that automatically shut off the gas supply in case of a flame-out, providing peace of mind for operators during busy service times.

In summary, the Southbend 1368,SB is a powerful, versatile, and durable commercial range that brings together high-performance cooking capabilities and user-friendly features. With its robust burners, spacious oven, and heavy-duty construction, it is an ideal choice for any professional kitchen looking for reliability and efficiency in their cooking equipment.