| Established in 1952 | |
Page: 1600 |
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IT'S FAST - Just squeeze the Quick-Grip handle with your right hand, and you can zip the two ball kinematic coupling up or down the rugged two-inch diameter hard surfaced column. At the same time, your left hand can propel the base around the table through a conveniently located handle. Nothing to tighten, nothing to loosen, no screws, no tools, just squeeze the grip; and in three seconds, the Ball Bar (Dumbbell) is in a new position and ready to measure again. |
 Quick Grip Stand |
By combining the three ball kinematic platform ( Part Number 3B-KM, see Bal-tec Technical Data Sheet CMM-4) on the CMM table with a two ball kinematic coupling (Part Number 2B-KM, see Bal-tec Technical Data Sheet CMM-3) on the Quick-Grip Stand and the Ultra-Precise Ball Bar (Dumbbell) with its precision lapped cylinders (see Bal-tec Technical Data Sheet CMM-5), a days work can now be done in 20 minutes.
The Two Ball Kinematic Coupling gives remarkable two axis self-alignment. Its ability to track the cylinder as the coupling moves up and down the post is quite obvious. What is less obvious is that this coupling can be rotated 30 or more degrees in either direction and still render the same microinch accuracy.
The 0.750 inch (19.05mm) diameter precision balls used in both of the kinematic devices are ultra fine-grained stainless steel which is hardened to 58 Rc for wear resistance. These balls may be rotated to many different positions, thus giving years of quality use.
In addition to the ultra-fast positioning capability of the Quick Grip Stand, it all but eliminates the main error associated with Ball Bar (Dumbbell) evaluation. This error is a deflection of the target ball caused by a bending and deflection of the Ball Bar (Dumbbell) and the vertical support post by the contact force of the measuring probe. It eliminates the problem by supporting both ends of the Ball Bar (Dumbbell) by very rigid structures which eliminate the bending and twisting movements.
Ball Bar (Dumbbell)s have very long dimensions and are extremely sensitive to temperature. The main source of temperature change occurs through hand-contact by the machine operator. Once the Ball Bar (Dumbbell) is located in the kinematic coupling, there is almost no reason for the operator to handle it again.
The 25 lb. (11.34 Kg) solid cast iron base of the stand is fitted with three hardened steel feet that are precision lapped flat and coplanar to provide a microinch stable reference surface. A heavy-interference fit permanently fixes the robust 2 inch ( 50.8mm ) diameter hard clad post in the solid cast iron base. The Quick-Grip Stand is supplied with a hold-down device that consists of a long, threaded shaft which extends all the way down through the length of the vertical column and screws into the CMM table, thus removing even the smallest tendency of the stand to tip when making extremely critical evaluations. When ordering, please specify the size and thread count to match the threads in the table of your Coordinate Measuring Machine. A tether, consisting of a plastic-covered steel cable, is provided with the two ball kinematic coupling. It goes around the upper end of the Ball Bar (Dumbbell) to prevent an accidental fall of the bar in case of a crash.
The Quick Grip stand is available in three standard heights:
Special height stands can be custom-manufactured. Fast delivery from pre-machined components is not expensive.
| Part # | Imperial Size | Metric Size | Description | Price | Purchase |
| QG-1 | COLLAR ONLY | $275.07 |  |
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| QG-24 | 24" | 609.6 mm | QUICK GRIP, 609.6 MM, 24 INCHES, STAND, COLLAR, 2B-KM AND 3B-KM | $682.22 | |
| QG-36 | 36" | 914.4 mm | QUICK GRIP, 914.4 MM, 36 INCHES, STAND, COLLAR, 2B-KM AND 3B-KM | $699.13 | |
| QG-14-0 | 14" | 355.6 mm | 14 INCH QUICK GRIP STAND AND COLLAR ONLY | $411.88 | |
| QG-24-0 | 24" | 609.6 mm | 24 INCH QUICK GRIP STAND AND COLLAR ONLY | $424.70 | |
| < CMM-5 Page 2, Ultra Precise Ball Bar | |
http://www.precisionballs.com |
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