EP3414054A1

EP3414054A1 - Universal holder for workpiece to be machined

Info

Publication number: EP3414054A1
Application number: EP17707672.6A
Authority: EP
Inventors: Jacques FRUND
Original assignee: Newtoolconcept Sarl
Current assignee: Newtoolconcept Sarl
Priority date: 2016-02-11
Filing date: 2017-02-10
Publication date: 2018-12-19
Also published as: US20190134784A1; CH712109A2; WO2017137943A1

Abstract

Disclosed is a universal holder (1) for a workpiece to be machined, comprising a ratcheted inclined plane (2) and a likewise ratcheted positioning block (3) that is mounted so as to be movable along the inclined plane (2) in an adjustable position and be secured along the inclined plane (2) in a clamping position for a machining operation.

Description

Universal workpiece support

Technical area

The present invention relates to a universal support for a workpiece.

The present invention relates in particular to an adaptable support according to the workpiece.

State of the art

[0003] Different types of workpiece supports that can be modulated according to the part to be machined are known.

[0004] Document IN 1 170KO2013 has a part support intended to support and guide the cylindrical parts. A clamping assembly allows adaptation to different cylindrical parts according to their lengths.

This solution has the disadvantage of being adapted only to cylindrical parts.

The document WO2006096176 discloses a door piece portable and vertically adjustable depending on the workpiece. The tool has two jaws, one of which can move vertically in order to move away from or closer to the second jaw depending on the size of the workpiece.

EP2862669 discloses a door piece for supporting a workpiece comprising a base body and two jaws each having a clamping portion. The jaw tightening parts, along of a clamping direction, are spaced at a distance from one another and between them by a forming space, in which a workpiece resting on the piece holder can be arranged. In addition, at least one of the clamping jaws is driven by a motor along the clamping direction to adjust the distance between the clamping portions to adjust them. In this way, a door piece is provided, a piece that can be inserted in a variable manner, without exchange of parts of the door part necessary to adapt to different parts.

These solutions have the disadvantage of only providing a device for clamping the workpiece without real possibilities to adjust or adapt the position of the workpiece according to the desired machining conditions.

EP2365894 discloses a door parts with a base and a plurality of room supports distributed on the base, each being intended to receive a shaft of a workpiece, at least a part of the part supports each comprising a sleeve for surrounding the shaft which is changeable between a loading configuration where the shaft can be introduced into or removed from the sleeve and a gripping configuration where the sleeve is compressed so that it locks shaft it surrounds and mechanical fasteners commuables between an active position where they act on the sleeve so as to maintain it in its gripping configuration and an inactive position where they do not act on the sleeve in this way leaving one - ci in its loading configuration. The sleeve is removably disposed in a recess and is made of an elastically deformable material, the mechanical fixing means pressing against the outside of the sleeve in their active position.

The solution has a base providing a plurality of parts supports. The supports are fixed and do not allow to adapt the height of the piece to facilitate machining. The solution is complex to implement and does not guarantee a firm fixation without vibrations. Brief summary of the invention

An object of the present invention is to provide a universal support for a workpiece allowing the use of a single support for machining different types of parts.

Another object of the invention is to provide a single piece of universal holder, avoiding having to design and manufacture a new adapter every time a new part is considered.

To do this, the invention provides a universal workpiece support comprising a notched inclined plane and a positioning block also notched movably mounted along the inclined plane in an adjustment position, and fixedly mounted along the inclined plane in a clamping position for machining.

The support can be operated either in an adjustment position, with a movable positioning block, or in a clamping position, with a said fixed positioning block. This solution has the particular advantage of being adaptable to the workpiece, the same support can be used for machining several types of parts of different sizes and shapes.

In addition, the use of the same support for several different parts allows a significant cost reduction. Advantageously, the adjustment of the block along the notched inclined plane is by a lock for placing said positioning block at a selected position along said inclined plane, the transition from the adjustment position to the clamping position for machining being implemented by clamping a clamping cam provided in a hollow axis substantially parallel to the inclined plane, the positioning block and the clamping cam being interconnected through a longitudinal slot arranged along the notched inclined plane.

This solution has the advantage of providing a holding security of the part during the machining particularly resistant to vibration. According to an advantageous embodiment, the clamping cam comprises a pair of movable clamping planes, controlled by a clamping screw, and cooperating with two fixed inclined planes, so that the tightening of the screw causes a radial offset clamping planes, for clamping the movable lock in the hollow axis, to obtain the clamping position for machining.

According to an advantageous embodiment, in the adjustment position, the corresponding notched portions of the inclined plane and the positioning block are spaced apart sufficiently to allow the block to slide along said inclined plane. According to yet another advantageous embodiment, in the clamping position for machining, the corresponding notched portions of the inclined plane and the positioning block are in contact, thereby creating a plurality of support points of the block against the inclined plane. This embodiment provides a strong and rigid support for vibration-free machining in addition to efficient clamping avoiding unwanted movement of the workpiece.

Advantageously, the positioning block comprises a laying plane against which an adapter can be positioned, and at least one attachment pin for rigidly fixing said adapter. This solution makes it possible to provide an adapter-clip or very simple support for attaching the part to the support according to a multiplicity of arrangements and configurations. Advantageously, the support also comprises a rotary base rotatably mounted in a fixed base), for angularly moving the universal support and the positioning block about an axis substantially perpendicular to the fixed base. This simple and reliable arrangement makes it possible to position the workpiece in the ideal angular position for good machining.

At least one clamping screw advantageously makes it possible to fix the angular position of the rotary base in the fixed base.

Brief description of the figures

Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which:

FIG. 1 shows a perspective view of an example of a workpiece carrier according to the invention;

FIG. 2 shows a sectional view of the piece carrier of FIG.

1;

FIG. 3 shows a perspective view of an exemplary positioning block and movable lock according to the invention;

- Figure 4 shows a sectional view of the movable lock and the positioning block of Figure 3.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows an embodiment of a universal support 1 for a workpiece. It comprises two main parts, firstly a substantially rectangular body 9 oriented substantially vertically, one of whose sides is provided with a notched inclined plane 2. A positioning block 3, also notched, is mounted movably along the plane inclined 2. The positioning block 3 comprises a laying plane 12 against which an adapter or clamp can be positioned, for example using at least one attachment pin 13, or by other means of fastening by screwing or tightening. It is then easy to fix any type of room, regardless of its form, with a minimum of adaptation work.

The multiple corresponding notched portions of the inclined plane 2 and the positioning block 3 create a plurality of support points of the block against the inclined plane. The user can thus easily select a suitable position according to the part to be supported by the support.

As can be seen in Figure 2, the adjustment of the block 3 along the notched inclined plane 2 is by a latch 4 for placing said positioning block 3 at a selected position along the inclined plane 2. The body 9 furthermore provides a hollow axis 6 substantially parallel to the inclined plane 2. This hollow shaft makes it possible to house a cam 5 for clamping the latch 4. A longitudinal slit 7 arranged along the inclined inclined plane 2 makes it possible to connect the block 3 of positioning and the cam 5 clamping.

With the latch 4, it is possible to configure the positioning block 3 in an adjustment position, in which the block is movable along the inclined plane, or a clamping position, in which the block 3 is firmly kept in place. In adjustment position, the corresponding notched portions of the inclined plane 2 and the positioning block 3 are sufficiently spaced to allow the sliding of the block 3 along said inclined plane.

As shown in Figure 3, in the clamping position for machining, the corresponding notched portions of the inclined plane 2 and the positioning block 3 are in contact, thereby creating a plurality of support points of the block against the plane inclined. The support obtained is firm, stable, and provides a maintenance without vibration, even under machining conditions involving significant effort. As shown in Figures 2, 3 and 4, a clamping screw 14 allows the implementation of one or the other of the positions. To do this, the clamping cam 5 comprises a pair of movable clamping planes 16, controlled by the clamping screw 14, and cooperating with two fixed inclined planes, so that the tightening of the screw 14 causes a radial offset of the 16 clamping planes, to tighten the lock 4.

As can be seen in Figures 1 and 2, in order to be able to place the body 9 and the inclined plane 2 according to a plurality of angular configurations, the universal support provides a rotary base 1 1 rotatably mounted in a fixed base 10 This arrangement makes it possible to angularly move the universal support and the positioning block 3 about an axis substantially perpendicular to the fixed base 10. To ensure the securing according to the desired angular position, at least one clamping screw 17 (or any other angular locking means) makes it possible to fix the angular position of the rotary base 1 1 in the fixed base 10.

Reference numbers used in the figures

1 Universal support

2 Notched inclined plane

3 Positioning block

4 Mobile lock

5 Cam clamp

6 hollow shaft

7 Longitudinal slot

9 Universal support body

10 Fixed base

1 1 Rotary base

12 Laying plan

13 Fastener

14 Clamping screws

15 Clamping plan

16 Spread plan

17 Clamping screws

Claims

claims

A universal workpiece support (1) comprising a notched inclined plane (2) and an equally serrated positioning block (3) movably mounted along the inclined plane (2) in an adjustment position, and fixedly mounted on the along the inclined plane (2) in a clamping position for machining.

2. support (1) universal for workpiece according to claim 1, wherein the adjustment of the block along the inclined plane (2) is made by a lock (4) for placing said block (3) positioning at a selected position along said inclined plane (2), the passage from the adjustment position to the machining clamping position being implemented by clamping a clamping cam (5) provided in a hollow axis (6). ) substantially parallel to the inclined plane (2), the positioning block (3) and the cam (5) clamping being interconnected through a longitudinal slot (7) arranged along the sloping plane (2).

3. support (1) universal for workpiece according to one of claims 1 or 2, wherein the cam (5) clamping comprises a pair of planes (16) movable clamping, controlled by a screw (14) of clamping, and cooperating with two planes (15) inclined fixed, so that the tightening of the screw (14) causes a radial offset of the planes (16) clamping, to tighten the latch (4) movable in the hollow axis (6), for obtaining the clamping position for machining.

4. support (1) universal for workpiece according to one of claims 1 to 3, wherein in the adjustment position, the corresponding notched portions of the inclined plane (2) and the block (3) positioning are sufficiently spaced to allow sliding of the block (3) along said inclined plane.

5. Support (1) universal for workpiece according to one of claims 1 to 4, wherein in the clamping position for machining, the Corresponding toothed portions of the inclined plane (2) and the positioning block (3) are in contact, thereby creating a plurality of bearing points of the block against the inclined plane.

6. Support (1) universal for workpiece according to one of the preceding claims, wherein the block (3) for positioning comprises a laying plane (12) against which an adapter can be positioned, and at least one stud ( 13) to rigidly fix said adapter.

7. Support (1) universal for workpiece according to one of the preceding claims, also comprising a rotary base (1 1) rotatably mounted in a fixed base (10), for angularly moving the universal support and the block ( 3) positioned about an axis substantially perpendicular to the fixed base (10).

8. Support (1) universal for workpiece according to claim 7, wherein at least one clamping screw (17) for fixing the angular position of the rotary base (1 1) in the fixed base (10).