Inventor Counterbore Slot

Posted : admin On 3/29/2022
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Use the 2D Pocket strategy with a 4 mm flat end tool to machine the counterbore on the single 4.5 mm hole. On the ribbon, click CAM tab 2D Milling panel 2D Pocket. Tool tab For this pocket, a flat tool with a diameter less than 4.5 mm is required to plunge into the pre-drilled hole.


Whitney Tool Company, celebrates in September its 40th anniversary as a premier manufacturer of industrial cutting tools. The public and the company’s customers, suppliers and sales force are invited to tour the plant and view demonstrations of the manufacturing process during an open house at the plant on Sept. On the ribbon Sketch tab Draw panel, click Overall Slot. Click in the graphic window to place the first slot point. Move the cursor, and click to specify slot length. If appropriate, enter the slot length or angle in the edit field. Jul 18, 2019 Today’s CNC software Quick Tip takes a look at the steps you would take to draw a Counterbore Slot from start to finish using 2 different methods. If you are interested in seeing what BobCAD-CAM software can do to maximize your shop’s productivity & bottom line, download a copy and try it out today. Use the 2D Pocket strategy with a 4 mm flat end tool to machine the counterbore on the single 4.5 mm hole. On the ribbon, click CAM tab 2D Milling panel 2D Pocket. Tool tab For this pocket, a flat tool with a diameter less than 4.5 mm is required to plunge into the pre-drilled hole.

1. A counterbore tool comprising:

a shank to be mounted in a machine tool for rotation thereof, said shank having an open slot of uniform depth extending inwardly from the outer extremity of said shank,

a cutting tool having a body portion and an outer cutting portion, said body portion being disposed in said slot in engagement with the bottom of said slot completely across said shank portion, said body portion having a depth substantially equal to the width of the slot so as to prevent any relative lateral movement of said tool with respect to said shank and having a width greater than the depth of said slot so as to project beyond the open end of the slot,

said cutting tool and said shank having interfitting male and female portions to prevent any movement of said tool longitudinally thereof and transversely of said shank,

Inventor Counterbore Slot Game

a pilot member disposed in telescoping engagement with and over the end of said shank in which said cutting tool is disposed and engaging said cutting tool and having a diameter greater than that of the shank but less than the length of said cutting tool, said pilot member having an open slot of substantially the same width as the depth of said cutting tool and into which said cutting tool extends,

and clamping means for holding said pilot member on said shank member and clamping said cutting tool therebetween in the open slots of said shank and said pilot member to prevent any movement of said cutting tool longitudinally of said shank, said cutting portion of said cutting tool extending radially a predetermined distance beyond the outer wall of said pilot member.



2. The counterbore tool of claim 1 in which said clamping means comprises two screw threaded fastening members disposed on opposite sides of the axial center of said pilot member so that said clamping means also resists any tendency of said pilot member to turn about the axis of said shank.

3. The counterbore tool of claim 1 in which said pilot member is in engagement with said cutting tool for the full width of said pilot member.

4. The counterbore tool of claim 1 in which said pilot member extends over the end of said shank in telescopic engagement therewith over only a small portion of the longitudinal depth of the pilot member and has a solid uninterrupted bearing surface extending completely across said pilot member in continuous engagement with the adjacent edge of the cutting tool.
Inventor Counterbore Slot
5. The counterbore tool of claim 1 in which the male portion of said interfitting portions is a central stud projecting from the base of said open slot and the female portion is a transverse slot in the adjacent edge of the cutting tool.

6. The counterbore tool of claim 1 in which the cutting tool has two oppositely disposed cutting portions.

7. The counterbore tool of claim 6 in which the length of the cutting tool is uniform throughout its width so that the cutting edges of the cutting portion may be sharpened without altering the radius of the counterbore produced by operation of the tool.

Inventor Counterbore Slot Parts

A drilling machine is used for this operation, and a typical counterboring tool is shown in Fig. 14.26. The operation involves enlarging existing holes, and the depth of the enlarged hole is controlled by a stop on the drilling machine. The location of the counterbored hole is assisted by a pilot at the tip of the tool which is a clearance fit in the previously drilled hole. A typical use for a counterbored hole is to provide a recess for the head of a screw, as shown in Fig. 14.27 or a flat surface for an exposed nut or bolt, as in Fig. 14.28. The flat surface in Fig. 14.28 could also be obtained by spotfacing.

Inventor Counterbore Slot Machine

Figure 14.29 shows methods of dimensioning counterbores. Note that, in every case, it is necessary to specify the size of counterbore required. It is not sufficient to state 'COUNTERBORE FOR M10 RD HD SCREW', since obviously the head of the screw will fit into any counterbore which is larger than the head.

Inventor Counterbore Slot Lock

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