YC-750P

!±8± YC-750P

The rolling process of YC-750P in the 1st speed. It's for rolling ACME thread and pitch 10.0mm.

YC-750P

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!±8± Nook 80155 Left Hand Thread Bronze 1 Start Acme Nut, 1-1/2" Rod Diameter, 5 Turns per Inch, 0.2" Lead

Brand : Nook | Rate : | Price : $147.98
Post Date : Dec 10, 2011 05:35:26 | Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your credit card will not be charged until we ship the item.

Nook 80155 Left Hand Thread Bronze 1 Start Acme Nut, 1-1/2" Rod Diameter, 5 Turns per Inch, 0.2" Lead

• 0.2 Inch Lead

More Specification..!!

Nook 80155 Left Hand Thread Bronze 1 Start Acme Nut, 1-1/2" Rod Diameter, 5 Turns per Inch, 0.2" Lead

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Threading Tips - Coarse Pitch Thread Turning

!±8± Threading Tips - Coarse Pitch Thread Turning

There are a number of applications in thread turning for which the standard tooling available will not allow the forming of a thread due to a number of factors. The main factors are

a) the helix angle is so large that there is insufficient clearance for the threading insert to cut the thread form.

b) internal diameters too small for the standard insert and toolholder to enter.

Some Definitions

In order to understand some of the design criteria for tooling for threading coarse pitches, let us begin with some definitions.

The helix angle is defined by the angle formed between the slope of the thread groove and the line perpendicular to the axis of the thread, see figure 1 below.

The lead of the thread (this is the same as the pitch for a single start thread) is the distance between corresponding points on adjacent thread forms measured parallel to the axis of the thread. This can also be defined as tpi or threads per inch, which is the reciprocal of the pitch. For multi start threads, the lead is equal to the pitch multiplied by the number of starts

The thread drawing below is schematically represented as a spring. Thus we can see that for a given diameter, if we stretch the spring to increase the lead or pitch, then the helix angle of the original spring length "b" is now increased to "a". Thus it is important in designing the tooling for coarse pitches to consider the effect of the increased helix angle.

The Influence of the Helix Angle in Threading Coarse Pitches

Since, by definition, a coarse pitch thread has a relatively large lead, and therefore large helix angle in relation to the diameter we must ensure that the design of the toolholder and insert allows sufficient clearance to avoid a rubbing or abrasive action on the cutting edge of the insert.

Typically, inserts for external threading applications are designed with a relief angle of 10º and for internal applications, 15º for the smaller inserts and 10º for the larger inserts. The relief angle is defined as the angle between the relief surface of the cutting insert and the workpiece.

These relief, or sometimes called clearance, angles permit the threading of a range of thread standards such a ISO, UN, BSW, ACME, BUTRESS and others. However, due to the varying angles of the thread profile in these standards, the relief angle on the cutting edge can vary from an acceptable 5º in the case of UN and ISO thread forms down to a critical 1º or 2º in the case of ACME or BUTTRESS forms.

Thus, the accurate calculation of the helix angle is required in order to optimize the design for these coarse pitch applications in order to ensure the design of the insert and toolholder give good cutting conditions with the necessary clearance angles.

In many cases a special anvil has to be used in conjunction with the toolholder to satisfy these cutting conditions. However in some cases, the size of the toolholder together with an anvil is too big to enter the internal diameter of the hole to be threaded. In these cases, a specially designed seating is machined directly in the toolholder so that the insert is then mounted at the correct helix angle directly.

In the case of very small diameter holes it may not be possible to enter the toolholder and insert combination even when the toolholder is designed for use even without an anvil. In these cases a solution is found by using the insert in the "U" form rather than the standard style in order to reduce the tool and insert combination in diameter, thus allowing entry into smaller holes.

This "U" form is also used when a large or deep tooth form must be ground on the inserts. The standard style insert is not always suitable for grinding large tooth forms, the "U" style being more flexible in these applications. However, the "U: form cannot reach to a shoulder and the component design must take this into account.

Threading Tips - Coarse Pitch Thread Turning

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Nook 30063 Right Hand Thread Plastic 3 Starts Acme Nut, 5/8" Rod Diameter, 2-2/3 Turns per Inch, 0.375" Lead

!±8±Nook 30063 Right Hand Thread Plastic 3 Starts Acme Nut, 5/8" Rod Diameter, 2-2/3 Turns per Inch, 0.375" Lead

Brand : Nook
Rate :
Price : $69.75
Post Date : Dec 01, 2011 03:07:32
Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your credit card will not be charged until we ship the item.

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!±8± Nook 11076 Right Hand Thread 4140 Steel 1 Start Acme Screw, 3/4" Screw Diameter, 6 Turns per Inch, 0.166" Lead, 3 Foot Length

Brand : Nook | Rate : | Price : $62.12
Post Date : Nov 28, 2011 01:35:30 | Usually ships in 1-2 business days

Nook 11076 Right Hand Thread 4140 Steel 1 Start Acme Screw, 3/4" Screw Diameter, 6 Turns per Inch, 0.166" Lead, 3 Foot Length

• 0.166 Inch Lead

More Specification..!!

Nook 11076 Right Hand Thread 4140 Steel 1 Start Acme Screw, 3/4" Screw Diameter, 6 Turns per Inch, 0.166" Lead, 3 Foot Length

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Hex Nut Zinc Plated

!±8± Hex Nut Zinc Plated

Good Parts - Professional Fasteners Supplier in Taiwan We sell Screw, Bolt, Nut, Washer, Standoff, Spacer, Insert, Rivet, Pin, SEMS, ACME, Thread Rod, Clamp, E Ring, Handle, Grip, Micro Screw, Studs, Fastener Kit, Custom-made Parts, Lathing Parts, Punching Parts, Stamping Parts (JIS, IFI, DIN...and so on)

Hex Nut Zinc Plated

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Cnc project

!±8± Cnc project

Last of the mechanicals, awaiting acme threaded rod and anti-backlash nuts on order.

Cnc project

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Linear Actuators and Linear Motion

!±8± Linear Actuators and Linear Motion

The mechanical energy is a science that is moving all day. The study, such as actuators to produce mechanical motion by converting various forms of mechanical energy is a source of great exploration. Science finds new ways to use actuators every day, even for medical purposes. Many scientists believe that the more you study these seemingly simple machines, the more you will find a way to help humanity.

The way in which a linear actuatorThe work is that there is an engine, drive a screw with a toothed belt drive wheel. Some linear actuators can also be a screw or direct drive. What ever the choice, the rotation of the screw pushes a drive nut screw, which in turn pushes the rod out and turn the screw in the opposite direction retracts the rod. According to the Association of Science, the spindle ball or acme screw or belt drive is what gives the carits movement. A cover protects the hose nut from environmental influences and use the contaminants as usual for machines, without the possibility of never stuck. Radial thrust bearings permit the screw to rotate freely under load and the linear unit is its strength.

Linear actuators are typically used as part of motion control systems. Nowadays, most of them will be executed by the computer. Control systems, a device that moves in linear actuators, or controlObjects. This is made possible by the actuators.

There are different forms of energy that run actuators. These are forms of energy, hydraulic, pneumatic, mechanical and electrical. The linear actuators are a lot of robotics and factory automation.

Linear motion is when an object moves in a straight line. This is the basic idea that the linear actuators. We need to stop, and the choice of a linear motor, they need to fulfill the purpose of the project type.Some things to keep in mind are the speed, stroke length and load rating of the actuator. Programmability of the actuator is also a factor especially when the application will be one that requires specialized detail. A linear actuator can be used in just about any forum. Ask yourself some questions when attempting to choose the right one for your project such as are there particular safety mechanisms required, environmental concerns to be addressed or space issues?

Rotary Tables

Linear Actuators and Linear Motion

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