What is design calculation?
Table of Contents
- 1 What is design calculation?
- 2 What is fixture in design?
- 3 How do you create a fixture?
- 4 How do you calculate design current?
- 5 How do you calculate electrical correction factor?
- 6 What are the design considerations in fixtures?
- 7 What is the function of the fixture?
- 8 How do I reduce the build time for a fixture?
What is design calculation?
A Process Design Calculation is a deliverable document of the Detailed Design and Engineering developed by a Process discipline. Related Definitions in the Project: The Detailed Design and Engineering Deliverable.
What is fixture in design?
Fixtures are workholding devices designed to hold, locate and support workpieces during manufacturing operations. Fixtures provide a means to reference and align the cutting tool to the workpiece but they do not guide the tool.
How do you calculate clamping force in fixture design?
Excess force can cause fixture and machine-table distortion or even damage….Complex Clamping Force Calculations.
| FR = | Total force from all clamps on right side |
|---|---|
| R2 = | Vertical reaction force from fixed stop |
| R3 = | Vertical reaction force on right side |
| N = | Normal force = FL + FR + 1500 |
| µ = | = Coefficient of friction = .19 |
How do you create a fixture?
Fixtures are created through combining fixture bodies, supports, locators, and clamps. Fixture components come in a variety of options that designers choose between depending on the workpiece and operation. Fixture use often leads to finished parts with stricter tolerances and improved surface finishes.
How do you calculate design current?
VD = mV/A/m × Ib(I “base” design current) × L(metres) . 6….
- Determine the design current (Ib)
- Select the nominal rating and type of the protective device (In)
- Divide the protective device rated current(In) by the correction factors (Cg),(Ci),(Ca),(Cr) etc;
- Select cable from the tables (Iz)
What are the 2 main purposes of a fixture?
Fixtures are used to securely locate (position in a specific location or orientation) and support the work, ensuring that all parts produced using the fixture will maintain conformity and interchangeability.
How do you calculate electrical correction factor?
Calculate the cross-sectional area of the required cable. The ambient temperature correction factor is found from {Table 4.3} to be 0.71….chapter 9.
| Iz | is the current carrying capacity of the cable in the situation where it is installed |
|---|---|
| Ca | is the correction factor for ambient temperature |
What are the design considerations in fixtures?
4.2.1 Design Consideration in Fixtures (a) The main frame of fixture must be strong enough so that deflection of the fixture is as minimum as possible. This deflection of fixture is caused because of forces of cutting, clamping of the workpiece or clamping to the machine table.
What is the first step in fixture design?
The first step in fixture design is to decide whether you even need a fixture at all! It’s been said more than once that great fixtures are the secret to profitability for machine shops. But that’s not always true.
What is the function of the fixture?
Fixture is a workpiece-locating and holding device used with machine tools. It is also used in inspection welding and assembly. Fixture does not guide the cutting tool, but is always fixed to machine or bench. By using fixture, responsibility for accuracy shifts from the operator to the construction of machine tool.
How do I reduce the build time for a fixture?
Compare two scenarios on the left and right. Click to set Build Time to zero. On repeat runs, the fixture already exists. Click to reduce Setup Time to 1 minute. With a fixture plate, we’re dropping onto pins. Click to reduce Unload/Load time on Fixture B to 30 seconds.