how to measure axial straightness of bore tube or barrel

"Mostly" scientific way of checking thread - AR15.Com

Feb 19, 2016 · But since the barrel may be bent (bore line not running true with the OD of the barrel, better to use a gauge rod in the muzzle bore, indicator off the muzzle bore to center the muzzle end of the barrel bore in the chuck using a spider as well, then cross side locked to the drive gear with the indicator mounted to in and indicator tip in the BEMIS-SC Small Caliber (5.56mm .45 Cal) Bore Erosion 11431 Willows Road NE Suite 100 Redmond, WA 98052 Phone (425) 885-0607 Fax (425) 885-0802 laser-ndt BEMIS-SC Small Caliber (5.56mm .45 Cal) Bore Erosion Measurement and Inspection System --BEMIS-SC Features-- _ - High Resolution laser-based inspection system for assessment of gun barrel condition Automated inspection process removes operator

Bore Alignment Laser Systems by Hamar Laser Brain

Bore angle (pitch and yaw) can be measured by taking 2-axis target measurements at two points along a bore, typically at the very front and rear. By pulling the target through bores, the system is capable of recording a detailed pipe ID straightness measurement and tube ID straightness measurement. DOWNLOAD L-706 BROCHURE Bore Straightness Gauge - Pacific Tool and GaugeBore Straightness Gauge at Pacific Tool and Gauge. Gunsmithing Tools / Jigs & Fixtures > Precision Bore & Chamber Check Gauges > Bore Straightness Gauge Defense Technical Information Center Compilation Part Barrel straightness is defined by specifying the path of the barrel's symmetry axis. This can be determined, for example, by measuring the location of a bore-centered target as it moves down the tube. It is common practice to reference the bore centerline to either a line drawn

In-Bore Projectile Velocity Measurement With Laser

The measurement of axial motion of the projectile along the gun barrel against time is one of the important methods to study the work-doing ability of propellant powders. The interaction between gun bore and projectile is interesting to many ballistician and designers. The velocity of the projectile changes from zero to several thousand meters per second, so it is difficult to observe the L-706 Bore Laser System Bafco ReliabilityHamar Lasers L-706 Bore Laser Alignment System is highly accurate and unparalleled for ease of use.It can handle a wide range of bore alignment and straightness applications. Even extremely difficult bore alignment jobs, such as spherical bearings, can be done easily. Projectile balloting attributable to gun tube curvatureA smooth gun barrel that has a total length of 3840 mm was adopted and modeled. The measured vertical and lateral centerline variations along the down-bore distance from the rear face of the tube are shown in Fig. 2(a) and (b), respectively. It appears that the barrel had a slightly upward displacement between the 700 mm and 1300 mm

Rifle and Gun Barrel Bore Analysis Report generator

Feb 14, 2014 · Rifle anlaysis, rifle straightness, gun barrel inspection, tube inspection, automatic land and groove measurement Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Total Runout GD&T BasicsAnother method for measuring total runout is to take one gauge held perpendicular to the surface of the part, and slowly move it across the surface of the part axially as the part is rotated. If the gauge varies at any point by more than the total runout tolerance, the part would be out of spec. Relation to Other GD&T Symbols: secrets of straightening a barrel Long Range Hunting ForumMay 31, 2011 · My preferred barrel maker has a tract record of nothing but straight barrels(.0000 to .0015) and a rare one that might be .0025) end to end. The issue on how much straightness is nessary (Some barrel makers say that .007 to .010 is OK), but as allways straight is allways better.

Straightness GD&T Basics

To gauge axis straightness effectively, MMC is commonly called out. To ensure that a part or feature is axially straight, a cylinder gauge is used to determine if the part fits in its total envelope at MMC. This is both a control of the diameter and of the axial straightness.