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Type: Posts; User: zsinstruments

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  1. Replies
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    Made in USA trade show just opened today at...

    Made in USA trade show just opened today at Indianapolis Convention Center. Good opportunity to see some American made products ranging from tools to textile.
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    I would start with measuring a recently certified...

    I would start with measuring a recently certified block, and see how close your results match with a 3rd party calibration lab, and if the difference is less than uncertainty of measurement.
    As...
  3. A word of caution here. Many things can go wrong...

    A word of caution here. Many things can go wrong with this procedure if the operator is not experienced. Just one of the examples: if stop is not indicated in, each degree of tilt will cause 0.001"...
  4. This is the same as Easson/DROPros. While some of...

    This is the same as Easson/DROPros. While some of those scales come with a differential EIA422 output, we are yet to see a single low cost DRO which would actually use the benefits of EIA422 as all...
  5. Very good point. We will consider adding this...

    Very good point. We will consider adding this feature to the next software release for DR400 series of Digital Readouts.



    It is small, typically less than 1 resolution count, but every sealed...
  6. DRO will measure linear distance with an error of...

    DRO will measure linear distance with an error of +/- 1 resolution count + glass error + temperature error + way straightness + play in the gibs + drilling/reaming accuracy. Doing square pattern will...
  7. LED might be hard to see, those are typically IR,...

    LED might be hard to see, those are typically IR, only a tiny red spot can be seen in a dark room and if looking straight. Replacing LED might not be as straight forward as you think. That scale...
  8. DRO-Pros are made by a Chinese company Easson,...

    DRO-Pros are made by a Chinese company Easson, they use a typical 5V TTL quadrature protocol. The generic scale you have is probably wired differently from Easson and without looking inside of it,...
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    Here is a sample picture of the steel chips...

    Here is a sample picture of the steel chips sticking to the magnetic scale: http://www.zsinstruments.com/downloads/magnetic_chips.jpg
    Actual magnetic tape is a dark brownish strip in a middle, it is...
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    Newall scales are based on inductive scanning...

    Newall scales are based on inductive scanning principle.

    If precision is critical for the application, then optical glass scales are number 1 choice. They provide exceptional accuracy and...
  11. ZS instruments makes similar adapters in the US...

    ZS instruments makes similar adapters in the US and we use the following microchips (installed on a small PCB inside of a DB9 connector shell) to do the convertion:

    AM26C31 differential line...
  12. Skilsaw might not have the rpms necessary to cut...

    Skilsaw might not have the rpms necessary to cut the granite efficiently. If you are really inclined to DIY, I would recommend renting a gas powered concrete saw with a big enough blade, will save...
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    Btw, have you considered wax? We had a great...

    Btw, have you considered wax? We had a great success with it holding delicate glass parts during the machining operations requiring lots of coolant.
    3M adhesive is also good but it tends to get...
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    Call Tom @(219)671.1998 He is a Loctite/Henkel UV...

    Call Tom @(219)671.1998 He is a Loctite/Henkel UV Adhesives Specialist and will tell you all about their products and advice if it is a good fit for your application.
  15. I've seen both case hardened and through hardened...

    I've seen both case hardened and through hardened rails. Considering it did not deform but snapped like cast iron, very likely this particular one was through hardened.

    One more clarification...
  16. Those linear rails are typically made out of...

    Those linear rails are typically made out of hardened steel, think ball bearing race. Hard but brittle. They are also ground to a high level of precision, so making it in house would be close to...
  17. +1 on the opening orientation. The reason you...

    +1 on the opening orientation.
    The reason you typically see encoder mounted to the column, is because most knees are too short to fit an appropriate size scale. If your knee happened to be longer...
  18. Your Z axis encoder could be misaligned,...

    Your Z axis encoder could be misaligned, contaminated or worn out. Skipped encoder counts would cause random position jumps like that. Is there a way to disengage servo and move quill by hand while...
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    ZS instruments proudly manufactures Digital...

    ZS instruments proudly manufactures Digital Readouts, Glass Scales, and Rotary Encoders in the USA. Headquarters and manufacturing plant are in Lafayette, Indiana Home Page - Digital Readouts, DRO...
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    We switched to Luxo KFM LED a few years back and...

    We switched to Luxo KFM LED a few years back and techs love it. It is bright, dimmable, lens is glass and arm stays where you put it, unlike low cost ones which always seem to come down under their...
  21. Have you tried with a different insert, or may be...

    Have you tried with a different insert, or may be even with a good old ground HSS one? It is possible that you have slight deflection in the middle from the cutting forces. It will get much worse if...
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    Our techs seem to love Hako. They are not cheap...

    Our techs seem to love Hako. They are not cheap but heat up fast and maintain tip temperature fairly well as the thermal load changes. I think its because the thermocouple is actually built into the...
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    Hello, Digimatic scales used a unique data...

    Hello,

    Digimatic scales used a unique data transfer protocol developed by Mitutoyo. If I am not mistaking, it is a 52 bit serial protocol which sends an absolute value to the monitor. Majority of...
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    John, I understand that this is not a fully...

    John,

    I understand that this is not a fully rebuilt machine. However I would assume you have taken some measurements and thoroughly inspected it before deciding that only table top and knee top...
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    WTB - Bridgeport Mill

    I am looking for a 9x42 Bridgeport Milling Machine. Step pulley version preferred. VFD is a plus
    Mill needs to be in excellent condition, spindle quiet and runout within specs, and no worn out spots...
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