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Table of Contents
Summary of Contents for Electronics TSP-M
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Page 2: Table Of Contents
Quick Switch From MM to Inch ............................ 4 Factory Default Settings ............................... 4 Measuring the Pre-Bow of a New (Unpeened) Almen Strip ..................5 Measuring the Arc Height of a Peened Almen Strip ..................... 6 Changing the Batteries ..............................7 Calibration ..................................8 Inspection of the Gage Head ............................8 Digital Indicator Instruction Manual Information ......................9 Computer Interface Device Accessory .......................... 9 Trouble Shooting the Model TSP-M ........................... 10 Checking or Setting the Spindle Starting Position ...................... 11 Contacting Electronics Inc............................11 Limited Warranty ................................ 12 Appendix ..................................13 Introduction to Correlation .......................... 1 3 The Almen Strips and Correlation Holder ...................... 1 3 Examples of Correlation ............................ 1 4 Graph 1 - 3.26 A to 1.15 Mini A ........................15 Graph 2 - 3.25 A to 1.25 Mini A ........................16 Graph 3 – 3.5 A to 1.25 Mini A, 3.26 A to 1.15 Mini A . -
Page 3: Description
Description The model TSP-M Almen Gage is manufactured to the specifications of SAE J442 Test Strip, Holder and Gage for Shot Peening. It is a precision device used for measuring the curvature of a metal test coupon called an Almen mini-strip. It has a calibrated electronic digital indicator with a low-force spindle spring to provide highly accurate and repeatable measurements. This gage will provide many years of trouble-free service if properly maintained. The gage should be calibrated, the indicator performance should be tested, and the support platform checked for wear annually or more frequently if conditions warrant. -
Page 4: Control Features
Control Features Three red control buttons on the display perform these user functions: • ZERO/ON: Turns the unit “ON”. It can also be used to set the Spindle Starting Position. See the “Trouble Shooting the Model TSP-M” section for more information on this feature. • M/OFF: This button, when pushed and held for three (3) seconds, turns the unit “OFF”. • inch/mm: Allows the selection of the display in inches or millimeters. Red control buttons Quick Switch From MM to Inch SAE J442 requires Almen gage indicators to have a resolution of 0.001 mm; therefore, the TSP-M Almen Gage is factory set to display 0.000 mm, with a 0.001 mm resolution. Pressing the inch/mm button, changing measurement units from millimeters to inches, results in a five (5) digit display (0.00000 inch) with a resolution of 0.00005 inch. -
Page 5: Measuring The Pre-Bow Of A New (Unpeened) Almen Strip
Place a new (unpeened) Almen strip onto the measurement position. Be sure the strip touches the back posts and is centered between the end posts. Read and record the pre-bow (also called flatness). Turn the strip over and measure the opposite side. If the reading from either side exceeds the specification value, discard the strip. (See Table 1 for common examples of acceptable pre-bow). An unpeened mini-strip placed on the mini-strip gage. An unpeened Standard Almen strip placed on the #2 Almen gage. The small side of the Zero Block is placed on the gage. The reading is 0.000 mm. Table 1. Examples of common industry Almen strip requirements for maximum pre-bow of unpeened strip Specification Grade Inch AMS2432, Shot Peening, Computer Monitored A1-S™, N1-S™ ±0.013 ±0.0005 AMS2430, Shot Peening A-1™, N-1™ ±0.025 ±0.0010 J442, Test Strip, Holder and Gage for Shot Peening A-1™, N-1™ ±0.025 ±0.0010 MIL-S-13165 Shot Peening of Metals (Canceled) A-2™, N-2™ ±0.038 ±0.0015 Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 6: Measuring The Arc Height Of A Peened Almen Strip
Peened standard Almen strip placed 1. Place the peened Almen strip onto the measurement position with on the #2 Almen gage. the indicator tip touching the non-peened side (concave side) of the strip. Record the value of the arc height shown in the display or, if using pre-bow compensation, the arc height shown in the display with the pre-bow compensation applied. 2. Remove the strip and place it once again on the gage. Do this three (3) times to assure an accurate reading. 3. When finished, push and hold the M/OFF button for three (3) seconds to turn the gage “OFF”. (The gage automatically turns “OFF” if it is not active for 15 minutes.) Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 7: Changing The Batteries
Changing the Batteries The Almen gage has a battery tray that holds two (2) CR2450 lithium batteries. A warning message appears in the gage’s display when the batteries need to be replaced. Battery Low message To change the batteries: Do NOT remove the digital Step 1. Using a small flat-blade screwdriver, carefully indicator from the gage slide the blade into the opening and release the battery holder. Do NOT remove digital indicator from the gage. Step 2. Once the battery holder is unlocked, grasp it with your fingers and pull the battery holder out. The batteries are on the underside of the tray. Step 3. Remove the expired batteries and place the new batteries positive side up in the tray. (The current Almen gage set-up and calibration information are retained when the batteries are replaced.) Place the battery holder in the battery compartment and push it in until it locks into position. Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 8: Calibration
Periodic calibration of the Almen gage is important to assure process repeatability and accuracy. The gage’s digital indicator should be removed and calibrated annually or sooner if it appears to be damaged or inaccurate. Use of a standard calibration stand as shown is recommended or you may return the gage to Electronics Incorporated for service. The digital indicator should be re-installed with the Zero Block in place and the physical position of the indicator adjusted on the frame so that it is near True Spindle Zero ±0.025 mm. This assures that the indicator is in the preferred accuracy range. -
Page 9: Digital Indicator Instruction Manual Information
Entering multiple measurements is quick and easy with the Computer Interface Device. The device plugs into a computer’s USB port and pulls the value displayed on the Electronics Incorporated Almen Gage directly into a computer program (Excel, Word, or similar software). The Computer Interface Device eliminates data entry errors and accelerates the measurement process. A push-button or foot switch controls the... -
Page 10: Trouble Shooting The Model Tsp-M
Trouble Shooting the Model TSP-M If the TSP-M Almen Gage indicator display is flashing, or if the gage will not zero, or the resolution needs to be changed, the following instructions will return the gage back to its factory default settings and remedy these conditions. Perform every step—one through six—in sequence until the problem is resolved. If more assistance is... -
Page 11: Checking Or Setting The Spindle Starting Position
Mode by pressing and holding the ZERO/ON button for three (3) seconds (the “X1” will disappear when in True Spindle Mode). The value of the Spindle Starting Position should be set to 0.000 mm + 0.025 mm (0.0000 inch + 0.0010 inch). If the Spindle Starting Position is out of tolerance, reposition the indicator on the frame using the instructions below or call Electronics Incorporated or an Authorized Distributor for assistance. Instructions: Be sure the zero indicator block is in place and then loosen the 8 mm gland nut holding the indicator. Adjust the indicator placement on the frame until the Spindle Starting Position is within tolerance. Carefully tighten the gland... -
Page 12: Limited Warranty
Limited Warranty The warranty obligations of Electronics Inc. for the TSP-M are limited to the terms set forth below. Length of Warranty Period This limited warranty lasts one (1) year from the shipping date of this product from Electronics Inc. or its authorized distributor. What is Covered This limited warranty covers defects in materials and workmanship in this product. What is Not Covered This limited warranty does not cover any damage or deterioration of this product resulting from any alteration or modification, improper or unreasonable use or maintenance, or improper handling or storage. How to Obtain a Remedy Under This Limited Warranty To obtain a remedy under this limited warranty, contact Electronics Inc. or distributor from whom this product was purchased. If it is determined that this product must be returned under this limited warranty, a Returned Goods number (RG), obtained from Electronics Inc., will be required. This product should be properly packed, preferably in the original carton, for shipping. Cartons not bearing a RG number will require additional processing time. -
Page 13: Appendix
It is convenient to peen the standard-size Almen strip and the mini-strip at the same time using a correlation holder. There are two methods of affixing the mini-strip to the correlation holder. In the first method, two screws secure the ends of the mini-strip. For the second method, double-sided adhesive tape or a temporary glue adhesive, such as rubber cement, secures the mini-strip to the holder. The second method is used only when it is not possible to attach the mini-strip to the holder with two screws. For both methods, the standard Almen strip must be affixed to the holder with four screws. The first image below shows the method using two hold-down screws to secure the mini-strip to the EI Correlation Holder for mini-strips (Electronics Inc. part number 970070). The strip is positioned next to two protruding back- stops to help keep it aligned. In the second image, the mini-strip is attached to the holder with double-sided tape. Two screws holding a mini-strip in place A mini-strip held in place with double-sided tape. This method should be used only when the mini-strip cannot be attached to the holder with screws. It is very important to use only one method. The two hold-down screws will keep the strip firmly secured to the holder during the blast cycle while the tape or glue may allow some lift-off or curvature. This curvature may... -
Page 14: Examples Of Correlation
6A to A Mini 6.09 2.40 Mini A Graph 7 12A to A Mini and N Mini 12.08 A 5.68 Mini A 18.40 Mini N Graph 8 12A to A Mini 12.32 A 4.93 Mini A Graph 9 12A to A Mini 12.08 A 5.68 Mini A Note: These examples are for illustration only. Differences in machine design, nozzle type and placement, type and size of media, and media condition can affect results. Document what you do and do what you document. When in doubt, repeat a test. Keep accurate records of every test. Use a curve solver certified to SAE J2597. Place the mini- strip on the gage multiple times to assure the reading is consistent. Do not rely upon these examples. We do not warrant that these examples will be appropriate for your applications. Create your own correlation studies. Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 15: Graph 1 - 3.26 A To 1.15 Mini A
Graph 1 - 3.26 A to 1.15 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 16: Graph 2 - 3.25 A To 1.25 Mini A
Graph 2 - 3.25 A to 1.25 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 17: Graph 3 - 3.5 A To 1.25 Mini A, 3.26 A To 1.15 Mini A
Graph 3 – 3.5 A to 1.25 Mini A, 3.26 A to 1.15 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 18: Graph 4 - 5.79 A To 2.40 Mini A, 5.95 A To 2.46 Mini A
Graph 4 - 5.79 A to 2.40 Mini A, 5.95 A to 2.46 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 19: Graph 5 - 5.95 A To 2.46 Mini A
Graph 5 - 5.95 A to 2.46 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 20: Graph 6 - 6.09 A To 2.40 Mini A
Graph 6 - 6.09 A to 2.40 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 21: Graph 7 - 12.08 A To 5.68 Mini A, 18.40 Mini N
Graph 7 - 12.08 A to 5.68 Mini A, 18.40 Mini N Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 22: Graph 8 - 12.32 A To 4.93 Mini A
Graph 8 - 12.32 A to 4.93 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 23: Graph 9 - 12.08 A To 5.68 Mini A
Graph 9 - 12.08 A to 5.68 Mini A Electronics Inc. • (574) 256-5001 • www.electronics-inc.com... -
Page 24: Compilation Of Correlation Data
The following graph compares the performance of the standard “A” strip to the “A” mini-strip based on the previous graphs. The examples shown in this document are included for educational purposes only. Do not rely upon this data. We do not warrant that these examples will be appropriate for your applications. Create your own correlation studies. Correlation A to Mini-A Arc Height x .001inch 14.00 12.00 10.00 8.00 6.00 4.00 2.00 0.00 0.00 5.00 10.00 15.00 20.00 25.00 Standard A Strip Electronics Inc. • (574) 256-5001 • www.electronics-inc.com...