New Vista STH Thread Units
— For Automated Installations —
— For Robotic Applications —
…In use internationally, for thread verification and thread chasing.
The most popular Thread Units in the World!
- “GO” verification (pitch diameter).
- “NO GO” verification (pitch diameter).
- “NO GO” verification (minor diameter).
- Rate: 90 filters per minute.
CANADIAN PATENT 2,521,347
OTHER PATENTS PENDING
SERIES STH FEATURES
- Quickly and automatically verifies or chases threaded holes (or external threads) by powering a suitable tool into (or onto) and out of (or off of) the part. Versions are capable of “GO” gaging, “NO GO” gaging, combination gaging or thread chasing.
- Sensitive high speed drive allows the tool to stop in case of missing, short, or improperly formed threads. This creates a “reject” signal.
- Spring-biased spindle prevents damage to end of thread at start of engagement.
- Will verify blind holes (or male threads) accurately for thread depth (length). Will mount in any orientation.
- Will not jam or stick in short or obstructed (reject) threads.
- Does not subject the part (or the spindle) to high force or torque levels…even with a reject.
- A single STH Unit will work with a variety of threads. No leadscrew is employed.
- Proven out for your application before shipping.
- Shipped with complete installation instructions. Integration is simple.
Motors; Voltages; Gearing
A typical STH callout looks like this: STH-500-SM2-1X-12.7-R
- STH is the basic model designation.
- 500 = an ‘L’ torque unit.
- SM2 = Mitsubishi servomotor; SK = Kollmorgen servomotor; D = direct current motor.
- 1X = direct drive; 4X = 4:1 gear reduction; 7X = 7:1 gear reduction.
- 12.7 (or 16) is the output shaft diameter in millimeters.
- R or R1 = designed to be wielded by a robot.
Specifications And Capacities For STH Units
- Cycle times shown below are for “typical” thread verification applications, with servo-driven versions, and where the thread lengths are twice the thread diameter. For very short, small diameter threads, cycles down to 0.8 seconds are possible.
- The maximum thread lengths that can be gaged are 6mm (1/4”) less than the maximum stroke figures shown. If more stroke is required, order an –ES version.
|MODEL SERIES||TORQUE UNIT||WILL VERIFY THREAD SIZES||MAX. STROKE||APPROXIMATE CYCLE TIME|
|250-SM2-1X-12.5||S||M2 – M5 (#2 thru #10)||32mm (1.25 in.)||1.5 seconds|
|500-SM2-1X-12.5||L||M5 – M22 (#10 thru 7/8”)||32mm (1.25 in.)||2.0 seconds|
|2000-SM2-4X-16||XL||M12 – M50 (1/2” thru 2”)||32mm (1.25 in.)||4.0 seconds|
|2500-SM2-7X-16||XXL||M19 – M64 (3/4” thru 2-1/2”)||32mm (1.25 in.)||6.0 seconds|
|3000-SM2-7X-16||XXXL||M50 – M100 (2” thru 4”)||38mm (1.50 in.)||7.0 seconds (for M50 size)|
- Additional dash-number designations:
- Add –FL for flange-mount versions.
- Add –ES suffix for extra stroke versions.
- Add –PD suffix to mount the Programmable Thread Depth Option.
- Add –CMB suffix for “GO / NO GO” (combination gaging) versions. Also for verifying high/low thread pitch diameter limits, as with pipe threads.
- Quoted as Options:
- Slide to advance the Unit. For STH foot-mounted versions: a RAM-250 or RAM-350 Slide Unit from New Vista can be employed for this purpose. For –R and ─R1 versions, your Robot provides this function.
- Programmable Thread Depth Option.
- Thread Gage Members, Thread Ring Gages, Chasing Tools and Toolholders: Please order separately.
An Application Form is available from the New Vista website: https://www.newvistacorp.com/contact/. Fill in the blanks and submit or send to [email protected]. Or you can get help by calling this U.S. telephone number: 410-342-3820, then 0, and then ask for Applications Assistance. We speak English and Spanish. A New Vista Applications Engineer will help you select the proper Thread Unit and Thread Gage or Chasing Members — and work with you if you need a special, or a system.