Pocket Hole Jig with Automatic Adjustment
20180290217 ยท 2018-10-11
Inventors
Cpc classification
F16H51/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16H19/04
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
B23B47/287
PERFORMING OPERATIONS; TRANSPORTING
International classification
F16H51/02
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
In an embodiment, a pocket hole jig is provided having a base, a lever, a clamp, a drill bit guide and a rack and pinion system. The rack and pinion system is configured to automatically adjust the pocket hole jig according to a position of the lever and the clamp.
Claims
1. A miniature pocket hole jig comprising: a frame; a drill bit guide; and a rack and pinion system configured to automatically adjust the miniature pocket hole jig.
2. A pocket hole jig comprising: a base; a lever; a clamp a drill bit guide; and a rack and pinion system configured to automatically adjust the pocket hole jig according to a position of the lever and the clamp.
3. A miniature pocket hole jig as shown in the figures.
4. A pocket hole jig as shown in the figures.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0007] While the appended claims set forth the features of the present techniques with particularity, these techniques, together with their objects and advantages, may be best understood from the following detailed description taken in conjunction with the accompanying drawings of which:
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DETAILED DESCRIPTION
[0045] The present disclosure illustrates an automatically adjusting pocket hole jig, generally designated. The gig includes a base having a clamp end, a toggle end, opposing sides and, and a platform extending from side to side and positioned intermediate clamp end and toggle end. The base also includes a channel formed at clamp end and extending from clamp end to platform. Portions of the base at each side respectively, extend from the clamp end to the platform to define the channel and act as guide rails. A guide holder extends substantially perpendicularly upwardly from the platform. The guide holder includes an inwardly facing vertical slot, proximate to a side and an inwardly facing vertical slot, proximate to the other side, each extending upwardly from the platform. While the base preferably includes a planar bottom to allow it to be placed and used on a work surface, it will be understood that the base can have substantially any bottom to allow it to be placed on a surface or fixed to a surface such as with brackets, pegs and the like.
[0046] An embodiment of the jig also includes a guide carried by the guide holder and reciprocally movable vertically along a plurality of slots between a raised position and a lowered position. The guide includes a body having a top, a bottom and at least one and preferably two guide channels extending therethrough, from the top to a surface above the bottom. The guide channels are disposed to receive and guide the shank of a drill bit. A clamp assembly is carried within the channel of the base. The clamp assembly includes a carriage reciprocally movable within the channel, away from the guide, toward the end (rearward position) and toward guide, away from the end (forward position) and a clamp arm positioned above and carried by carriage. The clamp arm is directed towards a toggle end and terminates in a foot element. Foot element engages a work piece to hold the work piece on platform abutting surface of the guide.
[0047] The guide is also movable between the lowered position and the raised position by an adjustment mechanism contemporaneous with the movement of guide. The adjustment mechanism includes a bar extending from the toggle end under platform and into the channel. The bar fixedly engages the carriage of the clamp assembly. When the bar is pushed longitudinally toward clamp end, the clamp assembly is moved toward the rearward position. When the bar is pulled longitudinally away from the clamp end, the clamp assembly is moved toward the forward position. To make movement of the guide member contemporaneous with movement of the clamp assembly, the adjustment mechanism includes a rack and pinion system. A double set of pinions (circular gears) are employed. A set of guide pinions are carried by a pin extending transversely through the base from one side to the other side. The guide pinions are spaced apart and each positioned adjacent to one of sides. A set of clamp pinions are carried by pin and are spaced apart and each positioned inside and adjacent to one of guide pinions. Guide pinions and clamp pinions rotate together, so that either the adjacent pinions are fixed together, or they are each fixed to the pin so as to rotate together. Clamp racks and (linear gears) extend forwardly from the carriage within the channel toward the toggle end. The clamp racks are spaced apart and parallel and engage the clamp pinions. The guide racks extend downwardly from the bottom on opposing sides of the body. The racks are received down through the slots, respectively to a position below the platform to engage the guide pinions.
[0048] Therefore, as the bar moves the clamp assembly, the clamp racks rotate the clamp pinions. The rotation of the clamp pinions also results in the rotation of the guide pinions. The rotation of the guide pinions translates into linear motion of the guide racks, moving the guide contemporaneously with movement of the clamp assembly. Guide pinions and clamp pinions can have different diameters to provide a proportional change from linear motion to rotational motion and back to linear motion. In this manner, the distance of the horizontal linear movement of the clamp assembly by the bar is proportionately translated to a vertical linear movement of the guide. This translation can be fixed to a specific ratio of pinions so that as the clamp assembly is moved to a distance from the guide to accommodate a work piece having a specific thickness, the guide self-adjusts, and is raised to a height with the correct proportions relative the thickness of the workpiece for positioning a pocket hole. A 7/10 gear ratio is preferred, but it will be understood that other ratios such as 6/10, or other such ratio, can be employed to achieve the desired movement of the guide in relation to clamp assembly.
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