FR3057037A1 - REFERENCE PIN - Google Patents

Abstract

The invention relates to a reference pin (200) having an axis (10) and comprising: - a base (202) consisting of a handle (204) and a cylindrical barrel (206), the handle (204) being pierced with a first bore (208a), the barrel (206) being pierced with a second bore (208b), the two bores (208a-b) being coaxial with the axis (10), - a calibrated rod (210 ) cylindrical with a first end (210a) which is provided to exit the barrel (206) on the opposite side to the handle (204), and a second end (210b) which fits into the bores (208a-b), - a system locking device (250) which alternately takes a locking position in which it ensures the locking in translation of the calibrated rod (210) along the axis (10), and a free position in which it releases the calibrated rod (210) ) which is permitted to move along the axis (10). In such a reference pin, it is possible to disassemble the calibrated rod to replace it.

Description

Holder (s): AIRBUS OPERATIONS Simplified joint-stock company.

Extension request (s)

Agent (s): CABINET LE GUEN ET MAILLET Professional civil society.

P4) REFERENCE PIN.

FR 3 057 037 - A1 _ The invention relates to a reference spindle (200) having an axis (10) and comprising:

- A base (202) consisting of a handle (204) and a cylindrical barrel (206), the handle (204) being pierced with a first bore (208a), the barrel (206) being pierced with a second bore (208b), the two bores (208a-b) being coaxial with the axis (10),

- a calibrated cylindrical rod (210) with a first end (210a) which is intended to exit from the barrel (206) on the side opposite to the handle (204), and a second end (210b) which accommodates in the bores (208a- b),

- A blocking system (250) which alternately takes a blocking position in which it ensures the translational locking of the calibrated rod (210) along the axis (10), and a free position in which it releases the rod calibrated (210) which is allowed to move along the axis (10).

In such a reference pin, it is possible to disassemble the calibrated rod to replace it.

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200

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210a

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REFERENCE PIN

TECHNICAL AREA

The present invention relates to a reference pin allowing the positioning of a first element relative to a second element.

STATE OF THE PRIOR ART

Fig. 1 shows a reference pin 100 of the prior art which has an axis 10. The reference pin 100 has a handle 102 which allows it to be taken in hand by an operator. Here the handle 102 is cylindrical.

The reference pin 100 also has a barrel 104 integral with the handle 102 and a calibrated rod 106 integral with the barrel 104. The barrel 104 and the calibrated rod 106 are cylindrical and coaxial with Tax 10, and each has a calibrated outer diameter.

Using reference pin 100 is to position two Tune parts relative to each other. The first part has a first hole and the second part has a second hole.

The first piece and the second piece are positioned Tune against each other so that the first and second holes are aligned.

The reference pin 100 is then placed from the side of the second part, so that the calibrated rod 106 accommodates in the first hole and that the barrel 104 accommodates in the second hole. The outside diameters of the barrel 104 and of the calibrated rod 106 are adjusted to the diameter of the corresponding holes.

The installation of a second reference pin 100 makes it possible to position the two Tune parts relative to the other to facilitate subsequent processing.

The reference pin 100 is a one-piece assembly and the operations of positioning the pin can deform or damage the calibrated rod 106. It is then necessary to replace the entire reference pin 100 complete, which generates a significant cost. .

STATEMENT OF THE INVENTION

An object of the present invention is to provide a reference pin whose use and replacement costs are reduced.

To this end, a reference pin is proposed having an axis and comprising:

- a base consisting of a handle and a cylindrical barrel and coaxial with the axis, the handle being pierced with a first bore, the barrel being pierced with a second bore whose diameter is less than the diameter of the first bore , the two bores being coaxial with the axis,

- a cylindrical calibrated rod with a first end which is intended to leave the barrel on the side opposite to the handle, and a second end which accommodates in the bores,

- a blocking system which alternately takes a blocking position in which it ensures the translational locking of the calibrated rod along the axis, and a free position in which it releases the calibrated rod which is authorized to move along of the axis.

Thus, it is possible to disassemble the calibrated rod when it needs to be replaced.

Advantageously, the locking system comprises a nut which screws onto the second end which is threaded for this purpose, and a locking screw which screws into the first threaded bore for this purpose.

Advantageously, the first end is threaded.

Advantageously, the reference pin comprises a calibrated ring which is fitted and sliding on the barrel and a stop system which alternately prevents and authorizes the displacement of the calibrated ring.

BRIEF DESCRIPTION OF THE DRAWINGS

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:

Fig. 1 is a side view of a reference pin of the state of the art, FIG. 2 is a sectional view of a reference pin according to the invention, and FIG. 3 is an exploded view of the reference pin according to the invention.

DETAILED DESCRIPTION OF EMBODIMENTS

Fig. 2 shows a reference pin 200 which has an axis 10. The reference pin 200 comprises a base 202 consisting of a handle 204 and a barrel 206. The barrel 206 is cylindrical, coaxial with the axis 10 and has a calibrated outside diameter. Fig. 3 shows an exploded view of the reference pin 200.

The base 202 includes a bore 208 which has a first bore 208a coaxial with the axis 10 in the handle 204 and a second bore 208b coaxial with the axis 10 in the barrel 206. The first bore 208a and the second bore 208b are communicating at the junction between the handle 204 and the barrel 206.

The diameter of the second bore 208b is less than the diameter of the first bore 208a so as to form a shoulder 209.

The reference pin 200 also includes a calibrated cylindrical rod 210 with a first end 210a which is provided to exit from the barrel 206 on the side opposite to the handle 204, and a second end 210b which accommodates in the bores 208a-b.

The reference pin 200 also includes a nut 252 which screws onto the second end 210b which is threaded for this purpose, and a locking screw 254 which screws into the first bore 208a tapped for this purpose.

From the locking position shown in FIG. 2, the replacement of the calibrated rod 210 consists of unscrewing the locking screw 254 which is then removed from the first bore 208a. The calibrated rod 210 and the nut 252 can then be removed from the barrel 206 by translation of the calibrated rod 210 and the nut 252 along the axis 10 in order to bring them out through the first bore 208.

The nut 252 can then be removed from the calibrated rod 210 which can be replaced by another calibrated rod 210.

The reassembly of the reference spindle 200 consists in screwing the nut 252 on the second end 210b of the calibrated rod 210, in introducing the first end 210a of the calibrated rod 210 in the first bore 208a then in the second bore 208b, to bring the nut 252 against the shoulder 209, then tighten the locking screw 254 in the first bore 208a so as to lock the nut 252 between the shoulder 209 and the locking screw 254.

Thus, if necessary, it is easy to disassemble the calibrated rod 210 and to replace it without having to replace the entire reference spindle 200. In addition, the calibrated rods 210 are very simple to produce since it involves bars with adequate diameters which are cut to the desired length.

The nut 252 and the locking screw 254 constitute a locking system 250 which alternately takes a locking position in which it ensures the locking in translation of the calibrated rod 210 along the axis 10 in the bores 208a-b, and a free position in which it releases the calibrated rod 210 which is authorized to move along the axis 10 in the bores 208a-b.

According to a particular embodiment, the reference pin 200 comprises at least one calibrated ring 256 which is fitted onto the barrel 206. The calibrated ring 256 is sliding on the barrel 206 which makes it possible to modify the length of the barrel 206 as a function of its application. The calibrated ring 256 can thus move from a position against the handle 204 to a position in the vicinity of the free end of the barrel 206. The calibrated ring 256 also has a stop system which alternately prevents and authorizes displacement of the ring calibrated 256 during the use of the reference pin 200.

The installation of a mobile 256 calibrated ring also makes it possible to reduce the number of references of the barrel + handle assembly because the same assembly can be used for different barrel lengths.

The stop system can be a screw, of the needle screw type mounted radially, and the tightening or loosening of the screw will allow the locking or the release of the calibrated ring 256. The stop system can be a tight mounting of the calibrated ring

256 on the barrel 206 where the application of sufficient force will allow the calibrated ring 256 to be moved.

The calibrated ring 256 can for example be made of aluminum or Teflon.

Of course, it is possible to provide a different blocking system. For example, the blocking system may consist of a head secured to the second end

210b and the locking screw 254 which presses the head against the shoulder.

In the embodiment of the invention presented in FIG. 2, the locking screw 254 takes the form of a hexagon socket headless screw, but it can take another form.

The use of the reference pin 200 according to the invention is identical to that of the reference pin 100 of the state of the art.

The first end 210a can also be threaded in the case where a tightening of the first end is necessary in use.

Claims (4)

1) Reference pin (200) having an axis (10) and comprising: - a base (202) consisting of a handle (204) and a barrel (206) cylindrical and coaxial with the axis (10), the handle (204) being pierced with a first bore (208a), 5 the barrel (206) being pierced with a second bore (208b) whose diameter is less than the diameter of the first bore (208a), the two bores (208a-b) being coaxial with the axis (10), - a calibrated cylindrical rod (210) with a first end (210a) which is intended to exit from the barrel (206) on the side opposite to the handle (204), and a second 10 end (210b) which accommodates in the bores (208a-b), and - A blocking system (250) which alternately takes a blocking position in which it ensures the translational locking of the calibrated rod (210) along the axis (10), and a free position in which it releases the rod calibrated (210) which is allowed to move along the axis (10). 15 2) Reference pin (200) according to claim 1, characterized in that the locking system (250) comprises a nut (252) which screws onto the second end (210b) which is threaded for this purpose, and a screw blocking device (254) which screws into the first bore (208a) tapped for this purpose. 3) Reference pin (200) according to one of claims 1 or 2, characterized 20 in that the first end (210a) is threaded. 4) Reference pin (200) according to one of claims 1 to 3, characterized in that it comprises a calibrated ring (256) which is fitted and sliding on the barrel (206) and a stop system which alternately prevents and authorizes the displacement of the calibrated ring (256).