FR2619040A1 - Device with magnetic linings for equipping the jaws of a clamping vice or the like - Google Patents

Abstract

The invention relates to a magnetic lining 4 intended to equip the jaws of a clamping vice. The upper bracket 4 is made from a lightweight alloy. It has a notch 12 in which there is housed a pad 17 with permanent magnets. The assembly is coated by overmoulding in the small strip 15 made of synthetic material. Application: improving the magnetic fastening qualities on the jaws of the vice.

Description

The present invention relates to a device for
magnetic packing intended to equip in a removable manner
ble the clamping jaws of a vice or the like.

One knows of magnetic linings likely to be
removably adapted to the jaws of a vice. We know
that such a device has a double advantage, namely
- on the one hand, and choose a material for the linings
malleable enough not to hurt this or that part
this particular that we propose to tighten in the vice
- on the other hand, this protects the original jaws of the e-
tau against any accidental deterioration (blow of file or
(seie) likely to be carried out during the adjustment operations.

Most known magnetic pads and types
are each made up of a strip of one synth material
soft tick or aggl omeree, to which is incorporated a
magnetic metal powder. The disadvantage of these arrangements
horned tifs is this lead to a little magnetic snap
energetic. so that the toppings were childhood to
stain the root hole of the jaws of the vice. I no longer, my
molded thirds used for their manufacture are often
too soft to ensure proper fixation.

The object of the present invention is to avoid these inconveniences
by making a magnetic packing device
capable of ensuring a securely locked installation -
while ensuring precise clamping of the workpiece
hold in the vice.

A device with removable magnetic linings for
steel clamping jaw includes at least one jaw for each jaw
a garnish, and it is characterized in that each garnished
ture is produced in a composite manner in the form of a
seems monobloc constituted by
- an upper non-magnetic metal angle
- at least one solid permanent magnet
- a plastic bar molded onto the ai
mants and on one of the wings of the angle iron.

according to another characteristic of the invention, the
angle iron is made of light metal alloy of aluminum-ium.

 According to another characteristic of the invention, the molded wing of the upper angle has at least one wide notch in which the permanent magnet (s) are arranged.

 According to another characteristic of the invention, several permanent magnets are provided juxtaposed and coated in a molded material so as to constitute a patch on one of the faces of which they are flush.

 The appended drawing, given by way of nonlimiting example, will make it possible to better understand the characteristics of the invention, and the advantages which it is likely to provide.

 Figure 1 is an overall view of a workshop vice, equipped with the magnetic jaw device according to the invention.

 Figure 2 is a perspective view of one of the magnetic jaws according to the invention.

 Figure j illustrates a mold for the manufacture of a salt liner on the invention.

 Figure 4 shows a possible embodiment of 1 permanent magnet, in the form of a pellet where are suroul, uoulés four magnets juxtaposed.

Figure. 5 is a section along VV (Figure 2) of the finished lining. S
Figure 6 shows the internal face of a clamping jaw of a vice of known type.

 Figure 7 shows how a packing according to the invention is presented.

 There is shown in the drawings a vice 1 which comprises, in the known manner, two clamping jaws. These jaws are generally made of steel.

 The invention provides for adapting on the internal face 3 of each of them, a magnetic lining 4 of the kind illustrated in the drawing.

Such a lining is produced by molding in a mold 5 of the kind illustrated in FIG. 3. In the cavity 6 of this mold, place
- A magnetic part 7 preferably held by positioning fingers 8 and an angle 9 of a non-magnetic metal. This metal may for example be an aluminum alloy.

This angle 9 has a horizontal upper wing 10 and a vertical wing 11 in which are cut '
- a main central notch 12
- large openings 13 near the ends
- smaller openings 14 located near the upper part to facilitate inking.

 Once these two inserts 7 and 9 are in place in the cavity 6 of the mold; a plastic material is injected which coats the assembly by overmolding, and constitutes a vertical bar 15.

 On the finished trim 4, we therefore see a vertical bar 15 made of synthetic material, surmounted on one side by the horizontal wing 10 of the light alloy angle.

 The magnetic pad 7 provides a powerful magnetic catch. It is preferably produced in the form illustrated in FIG. 4. that is to say by overmolding of four permanent magnets 16 in a synthetic material 1, which assembles them.

How it works
For the fitting of the lining 4 on in jaw 2, the procedure is carried out in the known manner, as illustrated in FIG. 7.

In other words, the top of the jaw 2 is capped with the two wings 10 and 11 of the angle iron 9, then the inner face of the bar 15 is applied against the vertical face 3 of the jaw 2. The fact that the permanent magnets 16 are high-power blocks, housed in close proximity to the steel face 3, provides the lining 4 with a solid anchoring on the jaw of the vice.

Claims (4)

RER'EXDICATIONS  1. Device with removable magnetic linings (4) for clamping jaws (2), comprising for each jaw (2) at least one lining (4) and characterized in that each lining (4) is produced in a composite manner under the form of a one-piece assembly. consisting of - an upper angle (9) of non-magnetic metal - at least one solid permanent magnet (16) - a bar (15) of synthetic material overmolded on the magnets (16) and on one of the wings (11) of the angle iron (9).  2. Device according to claim 1, characterized in that the angle iron (q) is made of a light metal, aluminum alloy minllm.  Device according to any one of the preceding claims. characterized in that the overmolded wing (11) of the upper angle (9) has at least one wide notch (12) in which the permanent magnet (s) (16) are arranged.  4. Device according to any one of the preceding claims. characterized in that it comprises several permanent magnets (16 juxtaposed and coated in a molded material so as to constitute a pellet (1;) on one of the faces of which they are flush.  5. Device according to any one of the preceding claims, characterized in that the coated wing (11) is cut along several notches (13) and openings (14) for its anchoring.