# US 2013/0239397 A1 · Apparatus and Method for Inserting a Component Through the Surface of a Workpiece

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- Number: US 2013/0239397 A1
- Document ID: US20130239397A1
- Status: Published application
- Kind: A1
- Application number: 13/988,806
- Filed: 2010-11-23
- Published: 2013-09-19
- Earliest claimed: 2010-11-23
- Assignees: Centre de Recherche Industrielle du Quebec
- Inventors: Denis Hotte
- Web page: https://patentgrep.com/patent/US20130239397A1

## CPC

- B23P 19/00: Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation {(connecting metal parts or objects by metal-working procedures B21J, B23K)}; Tools or devices therefor so far as not provided for in other classes (hand tools in general B25)
- B21J 5/063: {Friction heat forging (friction heat riveting B21J15/027)}
- B21J 15/027: {Setting rivets by friction heating}
- B21K 25/005: {by friction heat forging (B21J15/027 takes precedence; friction heat forging per se B21J5/063)}
- B23B 51/101: {Deburring tools (B23B51/103 takes precedence)}
- B23K 20/127: {Friction stir welding involving a mechanical connection}
- B23P 23/00: Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass (if the particular kinds of operation are not essential B23Q37/00 - B23Q41/00; {working by laser beam combined with other working of metal B23K26/0093})
- B23K 20/125: {Rotary tool drive mechanism}
- B23K 20/1255: {Tools therefor, e.g. characterised by the shape of the probe}
- Y10T 29/49945: by driven force fit
- Y10T 29/53978: including means to relatively position plural work parts
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B21J: FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P9/04; compacting surfaces by blasting with particulate material B24C1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27)
- B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K)
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A rotary tool (11) for use with a rotary driving unit (12) for inserting a component (14,14′,14″) through a surface of a workpiece made of a material showing friction-induced plasticity such as aluminum, includes a tool body (22) having a working end (24) defining a shoulder portion (26) and a securing device (28,28′) for selectively engaging the component to impart rotation thereof in a first direction while applying an axial force of a sufficient magnitude onto the component to produce insertion thereof by plasticizing the material through friction. The shoulder portion is provided with a deburring device (34) capable of being displaced from an inoperative position upon rotation of the tool body (22) in the first rotation direction (30), to an operative position whenever the tool body is caused to rotate in an opposite direction (30′), to provide deburring of the workpiece surface.

## Claims

### Claim 1

A rotary tool for use with a rotary driving unit for inserting a component through a surface of a workpiece made of a first material showing friction-induced plasticity to attach said component to the workpiece, said component having an insert portion extending along an insertion axis of said component, at least an outer surface of said insert portion being made of a second material harder than said first material, said tool comprising:
a tool body adapted to be operationally coupled to the rotary driving unit and having a working end defining a shoulder portion; and
a securing device provided on the tool body for selectively engaging the component to impart rotation thereof upon operation of the rotary driving unit in a first direction while applying an axial force of a sufficient magnitude onto the component to produce insertion of the insert portion along said axis by plasticizing the first material through friction at least until said shoulder portion is contacting said workpiece surface while maintaining said axial force during a sufficient setting time without rotation to produce said attachment;
wherein said shoulder portion is provided with a deburring device capable of being displaced from an inoperative position upon rotation of the tool body in said first rotation direction, to an operative position whenever the tool body caused to rotate in an opposite direction by the rotary driving unit following disengagement of the securing device with said component, to provide deburring of said workpiece surface in contact with said shoulder portion following said attachment.

### Claim 2 (depends on 1)

A rotary tool according to claim 1, wherein said first material is a metallic material.

### Claim 3 (depends on 1)

A rotary tool according to claim 1, wherein said deburring device includes at least one cutting element having a cutting edge and an opposite base portion received in a radially extending recess provided on said shoulder portion, the base portion being capable of being brought in full engagement with the recess upon rotation of said tool body in said first direction so that the cutting edge is maintained substantially retracted within the recess in said inoperative position, and the base portion being further capable of being brought in partial engagement with the recess upon rotation of said tool body in said opposite direction so that the cutting edge is maintained substantially projected from said recess in said operative position.

### Claim 4 (depends on 1)

A rotary tool according to claim 1, wherein said working end forms a chuck provided with an aperture extending along said axis for receiving a head portion of said component, said securing device including a jaw mechanism located within said chuck at the periphery of said aperture and being selectively displaceable between a securing position and a release position.

### Claim 5 (depends on 4)

A rotary tool according to claim 4, wherein said jaw mechanism is provided with threads adapted to mate with corresponding threads provided on said component head portion in said securing position.

### Claim 6

A method for inserting a component through a surface of a workpiece made of a first material showing friction-induced plasticity to attach said component to the workpiece, said component including an insert portion extending along an insertion axis of said component, at least an outer surface of said insert portion being made of a second material harder than said first material, said method comprising the steps of:
i) providing a rotary tool having a body defining a shoulder portion provided with a deburring device capable of being displaced from an inoperative position upon rotation of the tool body in a first rotation direction, to an operative position whenever the tool body is caused to rotate in an opposite direction;
ii) securing the component to the tool body;
iii) rotating the rotary tool in the first direction while applying an axial force of a sufficient magnitude onto the component to produce insertion of the insert portion along said axis by plasticizing the first material through friction at least until said shoulder portion is contacting said workpiece surface;
iv) maintaining said axial force during a sufficient setting time without rotation to produce said attachment;
v) releasing the component from the tool body; and
vi) rotating the rotary tool in the opposite direction to provide deburring of said workpiece surface in contact with said shoulder portion following said attachment.

### Claim 7 (depends on 6)

The method according to claim 6, wherein said first material is a metallic material.

### Claim 8 (depends on 6)

The method of claim 6, further comprising the step of:
vii) displacing the rotary tool away from said workpiece surface along said axis to withdraw said tool from the component.

### Claim 9 (depends on 6)

The method of claim 6, wherein said component insert portion has a penetrating end and is provided with a threaded bore closed at said penetrating end and extending along said axis, said component further including a head portion having a base being secured to the tool body at said step ii) and a working end being threaded at its outer surface and engaged with said threaded bore, said method further comprising the steps of:
vii) displacing the rotary tool away from said workpiece surface along said axis to withdraw said tool from the head portion base.

### Claim 10 (depends on 6)

The method of claim 6, wherein said component insert portion has a penetrating end and is provided with a threaded bore closed at said penetrating end and extending along said axis, said component further including a head portion having a base being secured to the tool body at said step ii) and a working end being threaded at its outer surface and initially engaged with said threaded bore, said method further comprising the steps of:
viii) repeating step ii); and
viii) displacing the rotary tool away from said workpiece surface along said axis while rotating the rotary tool in the opposite direction to withdraw said tool while removing the head working end from the threaded bore.

### Claim 11

An apparatus for inserting a component through a surface of a workpiece made of a first material showing friction-induced plasticity to attach said component to the workpiece, said component having an insert portion extending along an insertion axis of said component, at least an outer surface of said insert portion being made of a second material harder than said first material, said apparatus comprising:
a rotary driving unit;
a rotary tool having a body being operationally coupled to the rotary driving unit and having a working end defining a shoulder portion; and
a securing device provided on the tool body for selectively engaging the component to impart rotation thereof upon operation of the rotary driving unit in a first direction while applying an axial force of a sufficient magnitude onto the component to produce insertion of the insert portion along said axis by plasticizing the first material through friction at least until said shoulder portion is contacting said workpiece surface while maintaining said axial force during a sufficient setting time without rotation to produce said attachment;
wherein said shoulder portion is provided with a deburring device capable of being displaced from an inoperative position upon rotation of the tool body in said first rotation direction, to an operative position whenever the tool body is caused to rotate in an opposite direction by the rotary driving unit following disengagement of the securing device with said component, to provide deburring of said workpiece surface in contact with said shoulder portion following said attachment.

### Claim 12 (depends on 11)

An apparatus according to claim 11, wherein said first material is a metallic material.

### Claim 13 (depends on 11)

An apparatus according to claim 11, wherein said deburring device includes at least one cutting element having a cutting edge and an opposite base portion received in a radially extending recess provided on said shoulder portion, the base portion being capable of being brought in full engagement with the recess upon rotation of said tool body in said first direction so that the cutting edge is maintained substantially retracted within the recess in said inoperative position, and the base portion being further capable of being brought in partial engagement with the recess upon rotation of said tool body in said opposite direction so that the cutting edge is maintained substantially projected from said recess in said operative position.

### Claim at position 14

14-33. (canceled)