Cross hinge hole opener

Abstract

This invention relates to a cross-hinged hole saw, which mainly consists of a body and a hole-making plate. The body has a groove-shaped structure for mounting on a wooden workpiece. The body also has a slide, a first set of graduations, and a perforated hole connecting to the groove. The hole-making plate is slidably disposed within the slide and has first and second holes with different extension lengths. Its top surface has multiple indicators corresponding to the first set of graduations. This invention, through the design of the indicators facing the graduations, can accurately define the hole position and displacement, ensuring a safe distance between the hole wall and the workpiece edge. The body also has a second set of graduations or a layered measuring section with multiple depths (upper, middle, and lower), allowing the trimming machine to directly or layerally measure the tool depth according to the actual hole depth. Through the arrangement of clamping and adjusting components, the workpiece can be securely clamped and the hole-making plate accurately fixed, effectively solving the shortcomings of traditional manual marking methods such as inaccurate positioning, low processing efficiency, and difficulty in accurately controlling depth.

Claims

1. A cross-hinged hole opener, comprising: A body (11) includes: a groove structure (15) disposed on the body (11); a slide (20) disposed on the body (11) and directly connected to its top surface (16) and one side; a hollow hole (25) disposed on the body (11) so that the slide (20) communicates with the groove structure (15); a first scale group (26) disposed on the body (11) and adjacent to the slide (20); and an opening plate (50) slidably disposed in the slide (20), the opening plate (50) including: a first hole (52) and a second hole (53) respectively disposed on the opening plate (50) and adjacent to its two ends, the first hole (52) and the second hole (53) having different extension lengths, and one of the two holes (52, 53) being connected to the groove structure (15) through the hollow hole (25); Multiple indicator sections (58) are disposed on the top surface (56) of the perforated plate (50). Each indicator section (58) corresponds to the scale of the first scale group (26) to define the displacement distance of the first hole (52) or the second hole (53) relative to the body (11).

2. The cross-hinged hole opener as claimed in claim 1, wherein, The main body (11) has a plate (12), the bottom surface (17) of which is connected to a sub-plate (13) and a base plate (14) to form the groove structure (15), and the top surface (16) of the plate (12) is regarded as the top surface of the main body (11).

3. The cross-hinged hole opener as described in claim 2, wherein, The plate (12) further includes: an inner end face (21) that is recessed into the top surface (16) of the plate (12) by the slide groove (20) and located inside the slide groove (20); an outer port (22) that connects the slide groove (20) to one side of the plate (12); and two arms (23) that provide the plate (12) and are located on both sides of the slide groove (20), with the first scale group (26) provided on one of the two arms (23).

4. The cross-hinged hole opener as described in claim 3, wherein, The flat plate (12) further includes two grooves (28), which are respectively disposed on the two arms (23) and have openings facing each other; the perforated plate (50) further includes two rails (55), which protrude from both sides of the perforated plate (50), and the rails (55) are inserted into the corresponding grooves (28) to guide the perforated plate (50) in and out of the slide (20).

5. The cross-hinged hole opener as described in claim 3, wherein, The flat plate (12) further includes: a base plate (24) for connecting the inner end face (21) and the two arms (23) and located below the slide groove (20), and a perforated hole (25) is provided on the base plate (24) so ​​that the perforated plate (50) enters the slide groove (20) and the first hole (52) or the second hole (53) is connected to the groove structure (15) through the perforated hole (25).

6. The cross-hinged hole opener as described in claim 2, further comprising: A fixing piece (40) is disposed on the substrate (14), the fixing piece (40) has a forked portion (42) facing the bottom surface (57) of the perforated plate (50); an adjusting member (43) partially enters the forked portion (42) and can reciprocate relative to the fixing piece (40); the perforated plate (50) further includes: a central hole (51) disposed at the geometric center of the perforated plate (50), the central hole (51) being helically connected to the adjusting member (43) so that the perforated plate (50) is fixed in the groove (20) of the body (11).

7. The cross-hinged hole opener as claimed in claim 2, wherein, The substrate (14) further includes a second scale group (45) disposed on one side of the substrate (14) and perpendicular to the top surface (16) of the plate (12).

8. The cross-hinged hole opener as claimed in claim 2, wherein, The plate (12) further includes: a notch (70) located at one corner of the plate (12); the sub-plate (13) further includes: a layered measuring section (74) located at the same corner of the sub-plate (13), the layered measuring section (74) communicating with the notch (70); an upper bottom surface (71) located at the bottom (75) of the layered measuring section (74); a middle bottom surface (72) located at the bottom (75) of the layered measuring section (74) and deeper than the upper bottom surface (71); and a lower bottom surface (73) located at the bottom (75) of the layered measuring section (74) and becoming the deepest plane.

9. The cross-hinged hole opener as claimed in claim 2, further comprising: At least one clamping member (30) is provided with an external threaded rod (31) that is helically connected to the subplate (13). Each end of the external threaded rod (31) is provided with a force-applying part (32) and a contact member (33), and the contact member (33) faces the substrate (14).

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