Summary of Contents for Easson EX-100
- Page 1 EX-100 Manual for Universal Length Instrument with Digital Processing SUZHOU EASSON OPETO-ELECTRONICS CO LTD...
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Page 2: Table Of Contents
Contents Guide for unpacking 2 Application 3 Principal 3 Specification 4 Structure 6 Application and operating method 12 5.1 Key points application 12 5.1.1 Selection and adjustment for the cap-shaped measuring accessories 12 5.1.2 Selection of measuring force 13 5.1.3 Selection of auxiliary worktable 13 5.1.4 How to find a “turn-over point”... - Page 3 . Instruction Please read carefully this guide before unpacking and installing. In order to ensure the instrument accuracy, please unpack in accordance with the sequences specified in the following. ¡ ¢ Unpacking sequences £ ¤ ¤ 1.Remove the 4 screws (12 ),and take out the Abbe-type device (13 ) (see Fig.2).
- Page 4 Fig. 3...
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Page 5: Application
2. Pitch diameter of internal thread, thread, thread ring gauge, thread plug gauge EX-100 instrument is equipped with a data processing system. This system consists of a computer and data processing software, digital display hardware. The measuring results can be output by a printer. -
Page 6: Specification
Fig. 1 Raster measuring system 2.2 raster digital display system It includes a raster measuring system and a digital display system 2.2.1 the raster measuring system consists of a scale and a reading head(Its theory is shown as Fig.1). a) Lighting system The raster reading head adopts an infrared light emitting diode as a light source. - Page 7 External dimensions ¡ Absolute measuring range 0 100 Relative measuring range 0 700 Internal dimensions ¡ Using small-size measuring accessories (maximum penetrating depth 12, maximum wall thickness 50) 10 430 Using large measuring accessories (maximum penetrating depth 50, maximum wall thickness 85) Using electrical measuring accessories Electrical measuring accessories...
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Page 8: Structure
3.5 Instrument accuracy For external dimensions, accuracy better than m 20 £ ¢ ¡ ¡ For internal dimensions, accuracy better than £ ¢ 3.6 Universal worktable Installation area approximately 160 160 mm ¡ ¡ Height adjustment range 0 100 ¡ ¡... - Page 9 4.1.2 Universal worktable(see Fig. 2) There is a hand-wheel (6)in front of the universal worktable with a 0.5 mm of scale (10)to adjust the worktable height. The screws (8) and (9) is used to limit the height adjustment range of the worktable. The screw (8) is to control the upper limit, and the screws (9) for lower limit.
- Page 10 25. Back locking nut for the measuring spindle 26. Locking hand-wheel for Abbe measuring device 27. Locking screw for the gate of balance weight adjustment 28.29 adjusting screw of the fixing shaft for measuring cap-shaped accessories on the tail stock 30.
- Page 11 Fig. 3 Back view for the base 4.2 Abbe measuring device See Fig.2 ¡ The Abbe measuring device (17) includes a measuring spindle (19) and a raster measuring system. This system takes a glass scale as the reference for length measuring and works under transmitted lighting.
- Page 12 direction. If the red mark in the turn-over button (21) points upward, the micro-active hand-wheel may turn. The micro-active hand-wheel has a large transmitting ratio to make the spindle move extremely slowly. The circumferential motion of the handwheel is converted into the axial motion of the spindle through the friction device. This system is used to measure a hole during using the electrical measuring accessories.
- Page 13 effective ball diameter. When the ball contacts with the workpiece, the circuit is on and the infrared light emitting diode will light Fig.4 Electrical measuring accessory Fig.5 Insulating worktable for the and measuring head electrical measuring accessories 4.5 Inner measuring system Shown as Fig.6 and 9: it includes a pair of small-size measuring accessories, a pair of large-size measuring accessories, a special arbor for small-size measuring accessories and two standard ring gauges.
- Page 14 Fig.6 Inner measuring accessories 4.6 Universal measuring accessories The universal measuring accessories (Fig.7 and 10) can be used to measure the external micrometer. It includes a pair of measuring accessories 58, a 4mm diameter ball end rod(59) penetrating depth 5mm , a 12mm ball end rod(60) penetrating ¡...
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Page 15: Application And Operating Method
Fig.7 Universal cap-shaped measuring accessories 5. Application and operating method 5.1 Key points fore application 5.1.1 Selection and adjustment for the cap-shaped measuring accessories For contact-type universal length instrument, it can avoid from the bigger measuring errors to select and adjust the cap-shaped measuring accessories reasonably. - Page 16 Selection principle: minimize the contact area between the cap-shaped measuring accessories and the workpiece as possible. The disadvantages are as follows if the contact area is too big: Bring with error in adjustment. For example: During measuring a cylinder diameter with 8 cap-shaped measuring accessories, if there is a slight non-parallel between the two ¡...
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Page 17: Selection Of Measuring Force
1.5N. 5.1.3 Selection of auxiliary worktable In addition to the basic worktable, the EX-100 instrument has various worktables to suit for different parts. The application range for various worktables is as follows: Worktable type... -
Page 18: How To Find A "Turn-Over Point
dimension for sheet part 5.1.4 How to find a “turn-over point” The workpiece is mounted on the worktable. If the dimension to be measured is not coincident with the measuring axis, it is needed to align the workpiece by finding the “turn-over point”. -
Page 19: Measuring A Typical Workpiece
L according to the above formula and correct the measuring results. the workpiece and instrument temperature can be checked with a attached thermometer. With regard to our EX-100 instrument, the error in measurement will be corrected by the software. 5.2 Measuring a typical workpiece 5.2.1 Measurement of workpiece outer dimensions... -
Page 20: Measuring A Cone
Procedures for relative measurement: a. )First move the standard sample between the two cap-shaped measuring accessories and make them contact to find the “turn-over pint” and record the reading L or reset the display by pressing a key; b). Move the workpiece between the two cap-shaped measuring accessories and make them contact to find the “turn-over pint”... -
Page 21: Inner Dimension Measurement Using Double Measuring Accessories
− ¢ ¡ ¢ ¥ Where large end diameter, small end diameter; £ £ L: axial length between D and d; 2: included angle between conical generatrix and central line ¢ “D and d ” shall keep a distance from the end-face. The measuring method is same with £... -
Page 22: Measuring A Hole Using Electrical Method
d) Workpiece actual dimension L =L : actual dimension for the standard ¡ ring gauge); e) L Repeat operation b) to see if the value L changes. If not, the value L ¢ ¢ will be valid. To find shape error of the workpiece, repeat c) several times, move the worktable and change the workpiece position to be measured and measure out L ¢... - Page 23 £ e)Mount workpiece and lock it. For workpiece less than 20mm, it is needed to put a center ring under it (No.38 in Fig.5); f)Turn on the measuring circuit to check if the LED (No.38 in Fig.38) is work in order.
- Page 24 The above method is called a “2-point method”. The other one is “2-chord method” for electrical measurement and the principle is shown as Fig.14 (see the right scheme): Measure any two chord L near the diameter. The distance (H) between the two ¢...
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Page 25: Measuring Internal Dimension With The Single Measuring Accessories
5.2.5 Measuring internal dimension with the single measuring accessories The single measuring accessories, i.e. “universal measuring accessories” (No.58 in Fig.7), are used for measuring large internal dimension. They can be used together with £ the worktable for electrical measurement and the measuring method is similar to 5.2.4. - Page 26 actual pitch diameter pitch tooth type angle ¢ £ £ £ 3-pin diameter distance between the two outer enveloping planes of £ £ the 3-pin Selection of 3-pin diameter: In order to minimize the error in measurement of the pitch diameter resulting in the semi-angle error of tooth type, the selected 3-pin diameter shall make the contact point between the 3-pin and the tooth approach the pitch diameter as possible.
- Page 27 d mm d mm d mm ¡ ¡ ¡ 1.047 2.595 5.176 1.302* 2.886 6.212 1.553 3.106 8.282 1.732* 3.287 10.353 2.071 4.141 12.423 2.217 4.211 16.565 ¡ Note: the values with * are used for go-gauge. Adjusting the instrument: Select the plain cap-shaped measuring accessories and use a method for finding a “turn-over point”...
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Page 28: Measurement Of An Internal Thread Pitch Diameter
Fig.17 3-pin measuring for thread pitch diameter Fig.11 An example for using single V-shaped rack 5.2.7 Measurement of an internal thread pitch diameter (Fig.18) For measuring an internal pitch diameter, the used method is a relative measurement. The standard sample is combined of a pair of measuring block with standard tooth type and a block gauge. - Page 29 Metric thread Imperial thread Ball diameter ¨ Pitch p mm Pitch p d mm ¡ ¡ ¤ ¤ + P/2 Ctg( /2) - d/Sin( /2)]} ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢...
- Page 30 1.35 Where block gauge dimension 2 2.5 £ £ normal pitch diameter 3 3.35 £ workpiece pitch 4 4.5 £ workpiece tooth radius ¢ £ 3.75 a + b measuring block dimension £ (marked non-working surface) the recommended diameter for rob according to the right table. £...
- Page 31 +0.014 We can find “S” in the manual, and the normal pitch diameter is 51.329 in (M52 ¡ ¡ ). The block gauge dimension is calculated: E=51.329+0.5 1.732+ -6.171=46.026 mm ¡ − × ¡ In practice, select and combine block gauges (40 and 6). According to the certificate of conformity, the correction is -0.5 m for 40mm block gauge, and -0.3 m for 6mm block...
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Page 32: Maintenance
measure the thread at several different positions. e).Reset Remove the workpiece and replace the standard sample. Repeat operation c) and check if L changes. If not, take the average as L f).Data processing: Pitch diameter deviation For example: the reading difference is L =0.060 mm in the previous example. - Page 33 6.2 After application, clean all surfaces of worktable, measuring accessories and other auxiliary devices with gasoline. Then apply some vaseline without any acid. 6.3 During cleaning the optical elements, if required, first wipe off the dust by using a brush with absorbent fine soft hair, then wipe lightly them with (absorbent and clean) fine soft cloth or a piece of absorbent cotton dipping with some mixture containing alcohol 30 and ether 70...