Ovation Engineering Inc.

1
Ovation Engineering Inc.
System
The
Please click tab below to view as full screen.
2
Welcome to the EZ-Comp System.

• The EZ-Comp System automatically corrects for
  tool wear and other process deviations by
  transmitting measured values directly into the
  CNC offset tables!
• This makes The EZ-Comp System an invaluable tool
  in CNC productivity.

3
What Is the EZ-Comp System?

• The Ovation Engineering EZ-Comp Programmable Tool
  Compensation Interface helps to eliminate machine
  down time and part size errors due to manually
  entered tool offset data by automatically
  transferring tool offset data into the CNC
  controls offset tables. Data can be collected
  and processed from a variety of gaging devices
  and SPC software packages.

4
How The EZ-Comp Works.

• The EZ-Comp collects data in real time from a
  gaging device or SPC software. It then calculates
  a statistical or fixed running average for each
  controlled feature and compares the average to
  user programmed tool compensation limits. If the
  average exceeds the limit, the required tool
  receives a compensation.

5
System Capabilities

• The system is capable of providing offset data
  for up to 20 measured features. Each feature will
  correspond to a channel in the EZ-Comp. The size
  control for each of these features is
  accomplished by automatically changing tool
  offset values in the CNC control. The EZ-Comp
  interfaces to the machine's controller through
  either an RS-232 serial port or parallel I/O.

6
Why Compensate for Tool Wear Automatically?

• Automatic tool compensation allows the operator
  to focus on tasks other than entering offset data
  into the control. It also eliminates the
  possibility of entering erroneous data, or
  transposing data values (i.e., .0051 instead of
  .0015) In addition, the EZ-Comp makes
  compensation decisions based upon a running
  average, as opposed to single part measurements.
  This provides for a much more stable response to
  variation by providing a filtering effect on
  the data. The result is that small, normal ,
  erratic, and unpredictable variations in the
  process are ignored, while large and consistent
  variations (such as tool wear) are compensated.

7
Principles of Operation and Parameter Definitions.

• Upper and Lower Tool Compensation Limits
• Comp Target
• Max Comp
• Skip
• Trend
• Direction
• Upper and Lower Reject Limits
• Tool Compensation Algorithm

8
Upper Lower Tool Compensation Limits

• The Upper Lower Tool Compensation limits are
  values that are programmed on a per tool basis.
  The Upper Lower Tool Compensation limits
  determine the process level (running average)
  that must be reached before an offset will be
  sent to the CNC. This parameter is usually
  expressed as deviation from mean. If the process
  running average is within these limits, no
  compensation will be sent on the current cycle.

9
Comp Target

• This is the process target value. This parameter
  is used to anticipate process trends by
  compensating to a value other than the mean. Set
  this parameter to the desired process level to be
  reached on each comp. This parameter is usually
  expressed as deviation from mean. To target the
  mean, set this parameter to zero. The EZ-Comp
  uses a default value of 0.0000

10
Max Comp

• This is the maximum amount of compensation that
  can be sent on any given cycle. If the calculated
  comp amount exceeds this value, the compensation
  that sent will be equal to the Max comp value. If
  the Max Comp value hasnt been programmed, the
  EZ-Comp uses a default value, which is based on
  the setting of the resolution parameter. (The Max
  Comp cannot exceed the comp range of the system.)

11
Skip

• This value represents the number of parts that
  exist in the queue between the operation creating
  the compensated feature and the gage that is
  measuring the compensated feature. This value
  specifies how many parts will be gaged after a
  compensation, before the first part affected by
  the comp will reach the gage. Set this parameter
  to a value greater than zero if non-compensated
  parts will reach the gage after a compensation is
  sent. The default value for this parameter is
  zero.

12
Trend

• This value indicates the number of gage readings
  used to calculate the running average. The
  EZ-Comp uses a default value of 1.

13
Comp Direction

• This parameter determines whether the sign of the
  calculated compensation value will be reversed
  before being transmitted to the CNC offset
  tables. Normally the comp sign will be the
  opposite of the calculated trend in order to
  correct the process back toward the mean. The
  default value is POS (Positive). If the unit is
  compensating in the wrong direction change this
  parameter to NEG (Negative). Negative Comp
  direction is often necessary when a cut-off tool
  is compensated to control part length.

14
Upper and Lower Reject Limits

• Data received from the gage that is outside of
  these limits will not be used in the compensation
  algorithm.

15
EZ- Comp Tool Comp Algorithm.

• The EZ-Comp software uses exclusive algorithms
  for calculating the current process level after
  every gaging cycle. This process level is
  compared to the programmed tool comp limits for
  making comp decisions. If the calculated process
  level exceeds one of the comp limits, an offset
  is sent to the CNC control such that the process
  will be brought back to the mean or the
  programmed target level.
•  

16
Machine Tool Interface

• The interface between the EZ-Comp, the machine
  tool, and the gage may be achieved by a variety
  of different methods. The installation technician
  will determine the optimum method for the type
  of CNC and gage system being used.

17
Ease of Use

• Once installed, the EZ-Comp System begins to
  generate automatic offsets. This starts the
  cycle of creating and maintaining a useable
  product based on specific work piece tolerances.
  All of this is done so efficiently that the
  benefits of the EZ-Comp System will be recognized
  immediately.

18
Can you afford not to have the EZ-Comp n System?

• The EZ-Comp System saves you time, labor, and
  materials. Stop throwing money away
• CALL US TODAY!

Return to ovationengineering.com