Die cast magnetic pad

Abstract

Present invention teaches a magnetic pad to work with clamping tools where the magnet and protrusions on the top surface provide for easy aligning and connection from the clamping tool to the pad, relying primarily on the use of a ring-shaped magnet embedded in the top surface. The bottom surface provides flexible holding surface upon work pieces with two grooves of different sizes. The pad materials can be made from soft metals to eliminate marring the surface of work pieces.

Claims

1. A die cast magnetic pad, comprising: a round disc having a top surface and a bottom surface; a ring-shaped permanent magnet embedded in a central portion of said top surface and is flush with a lower level plane within the top surface; a plurality of protrusions formed evenly spaced and next to an edge of the top surface, each of said protrusions contains an upper level tier flush with the edge of the top surface and a lower level tier flush with the lower level plane within the top surface and the embedded permanent magnet; and a first v-groove and a second v-groove set at a 90-degree relationship, with two grooves intersecting each other at a center point of the bottom surface of said round disc, wherein the first v-groove is wider than the second v-groove.

2. The pad of claim 1, wherein 4 protrusions of the plurality of protrusions are placed at 90 degrees apart around the edge of the top surface.

3. The pad of claim 1, wherein 2 protrusions of the plurality of protrusions is 2 are placed at 180 degrees apart around the edge of the top surface.

4. The pad of claim 1, wherein a material for the round disc is made of die cast material.

5. The pad of claim 1, wherein the lower level plane is ring-shaped and concentrically enclosing the ring-shaped permanent magnet.

Description

DESCRIPTION OF THE DRAWINGS

(1) The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate and exemplify the preferred embodiments of the invention. Together with the description, serve to explain the principles of the invention.

(2) A brief description of the drawings is as follows:

(3) FIG. 1 is the perspective view of the top surface of the present invention.

(4) FIG. 2 is the perspective view of the bottom surface of the present invention.

(5) FIG. 3 is the perspective view of the present invention when a steel clamp pad clipped in; such clipped in is done efficiently due to the guiding function of the protrusions and the magnetic attraction.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(6) The Die cast magnetic pad 100 of present invention consists of a round disc 10 having a top surface and a bottom surface.

(7) As shown in FIG. 1, a ring-shaped permanent magnet 1 is embedded in the central portion of said top surface and is flush with a lower level plane bb within the top surface.

(8) A plurality of protrusions 6 is formed evenly spaced and next to the edge of the top surface. Each of said protrusions 6 is shaped like a step of a simple staircase: each contains an upper level tier 6a and a lower level tier 6b. Each protrusion's upper level tier 6a is flush with the edge of the top surface; each protrusion's lower level tier 6b is flush with the lower level plane bb within the top surface and the embedded permanent magnet 1.

(9) As shown in FIG. 2, a small v-groove 2 and a large v-groove 3 are set at a 90-degree relationship, with the two grooves intersecting each other at the center point of the bottom surface of said round disc 10. The two grooves of different sizes provide needed flexibility to work on objects of different sizes, such as tubes of varying diameters.

(10) The material for the round disc 10 can be made from soft die cast material such as aluminum. Since the material is relatively soft, the surface of a work object is not likely to be marred.

(11) In one preferred embodiment, four protrusions 6 are formed and are placed at 90 degrees apart around the edge of the top surface.

(12) In another preferred embodiment, three protrusions 6 are formed and are placed at 120 degrees apart around the edge of the top surface.

(13) In yet another preferred embodiment, two protrusions 6 are formed and are placed at 180 degrees apart around the edge of the top surface.

(14) The lower level plane bb can be made to be ring-shaped and concentrically enclosing the ring-shaped permanent magnet 1.

(15) The permanent magnet 1 in the top surface provides an easy and convenient way to attach to a clamp pad 4 of a clamping tool 5, provided that the clamp pad 4 has positive susceptibility to magnetic power. Just click the clamp pad 4 to the ring-shaped permanent magnet 1 of the present invention, then regular operation can proceed, saving the step of using a tightening screw to keep the clamping tool attached properly to a pad without the structure of present invention.

(16) As shown in FIG. 3, there is no tightening screw; removing the clamp tool (containing the pad 4) is just as easy by simply pulling away the clamp tool from the magnetic pad 100 of present invention.

(17) The permanent magnet 1 and the protrusions 6 help to quickly align the clamp pad 4 to the magnetic pad 100 of present invention, so that the turning, or other operation, of the clamp tool is aligned to the center of the clamp pad 4 quickly and easily.

(18) It should be noted that the description and disclosure made herein illustrated the preferred embodiments of the invention and are not meant to limit the scope of the applicant's rights. Variations and alterations may be employed for yet additional embodiments without departing from the scope of the invention herein.