Jaw grip force adjustment system for offset and 90 degree pulling heads
a technology of force adjustment and jaw, which is applied in the direction of metal-working equipment, metal-working equipment, manufacturing tools, etc., can solve the problems of poor jaw gripping force, and difficulty in using tools, and achieve the effect of strengthening weakening the jaw gripping force of the pulling head
Inactive Publication Date: 2014-04-17
SPS TECH LLC
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- Description
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- Application Information
AI Technical Summary
Benefits of technology
The system provides adjustable jaw gripping force, enhancing the ability to install fasteners of various sizes without slippage, simplifying the installation process, and allowing for 360 degree angular adjustment of the pulling head relative to the power tool, reducing tool wear and improving productivity.
Problems solved by technology
In aerospace blind fastening systems, the gripping force provided by the jaws is very important for proper fastener installation—too little force causes slippage leading to installation failures and too much force makes it difficult to use the tool, which also causes productivity and tool wear issues.
Straight pulling heads can easily be adjusted for the amount of grip the jaws provide, however offset or 90 degree pulling heads presently on the market do not provide adjustments for the grip of the jaws.
This tool, however, does not have a jaw grip adjustment so it sometimes has problems installing smaller diameter fasteners.
However, despite the foregoing, the underlying problem coming from lack of proper adjustment still exists.
Method used
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[0020]While the invention may be susceptible to embodiment in different forms, there is shown in the drawings, and herein will be described in detail, a specific embodiment with the understanding that the present disclosure is to be considered an exemplification of the principles of the invention, and is not intended to limit the invention to that as illustrated and described herein.
[0021]The invention provides for a jaw grip force adjustment system 100, which is best illustrated in FIGS. 2 and 4. The jaw grip force adjustment system 100 further acts as an adaptor from a power tool 200, such as a riveter, to a pulling head 300, which is preferably an offset pulling head, as illustrated in FIG. 3, or a 90 degree puling head (not shown).
[0022]FIGS. 1 and 2 illustrate a typical power tool 200, such as a riveter. The power tool 200 is a known device and, therefore, will not be described in any detail, except to describe and illustrate parts of the power tool 200 that interact with the j...
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The invention provides a pulling head, a jaw gripping assembly, and an adjustment assembly. The pulling head has a frame having first and second ends with the first end being configured to receive a stem of a fastener therein. The jaw gripping assembly is generally positioned within the frame. The adjustment assembly is operatively associated with at least one of the frame and the jaw gripping assembly. Manipulation of the adjustment assembly in a first manner moves the jaw gripping assembly closer to the first end of the frame in order to minimize an amount of jaw grip force generated by the jaw gripping assembly, while manipulation of the adjustment assembly in a second manner moves the jaw gripping assembly distal to the first end of the frame in order to maximize an amount of jaw grip force generated by the jaw gripping assembly.
Description
CROSS-REFERENCE AND INCORPORATION BY REFERENCE[0001]This application is a continuation of U.S. patent application Ser. No. 13 / 330,187, filed on Dec. 19, 2011, and entitled “JAW GRIP FORCE ADJUSTMENT SYSTEM FOR OFFSET AND 90 DEGREE PULLING HEADS”. U.S. patent application Ser. No. 13 / 330,187 is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]This invention is generally directed to a jaw grip force adjustment system for offset pulling heads. It is also directed to an improved 360 degree swivel system for offset and right angle pulling heads.BACKGROUND OF THE INVENTION[0003]Aerospace blind fasteners are widely used in aircraft manufacturing. There are many different types and sizes that are used, based on the material or strength characteristics required. These blind fasteners are typically comprised of a sleeve, a stem and some type of locking mechanism. The stem of a fastener is gripped by jaws inside of a pulling head, while the sleeve of the fastener is ...
Claims
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IPC IPC(8): B21J15/28
CPCB21J15/28B21J15/043B21J15/105Y10T29/53735Y10T29/5377Y10T29/5373Y10T29/49716
InventorCOBZARU, CRISTINELWILKER, JOHN
OwnerSPS TECH LLC