TWI298029B - A measurement apparatus of the friction stir welding - Google Patents

Description

1298029 IX. Description of the invention: • [Technical field to which the invention pertains] The present invention relates to a friction stir welding detection device, in particular to the simultaneous use of three force gauges (f〇rce transducer) in a friction stir welding process The detecting action is performed to extract the friction stir welding detecting device of the three forces generated during the friction stir welding process. [Prior Art] Φ The conventional friction stir splicing method is described in detail in British Patent No. 9U5978.8 and U.S. Patent No. 5,460,317. The principle is to use a welding tool consisting of a probe and a shoulder. The welding tool is first used by the welding tool at high speed. The joint interface is subjected to a high pressing force, at which time the probe is squeezed into the interface to be joined while performing frictional mixing, and the shoulder is moderately pressed against the outer surface of the two workpieces. Next, the bonding tool feeds at a certain speed in the direction of the joint (10). When the splicing tool is fed, the material to be joined in a semi-melted state is rapidly solidified by the material to be joined and its surrounding material, so that it is connected. The use of a motorcycle (four) mixing has been applied to | §, magnesium, zinc, copper, Chin, = iron and other aspects of the gold and its turn (four) to carry out the main operating conditions affecting the joint quality 2, the secret of the hybrid tool money view Degrees, ★ Hai probe joint appearance, the two most discussed the above: this industry and academia in the past C: \ Linda \ PK Pat \ PK10l7l.

0fi/l0/30/0I: 3l PW 1298029 Gradually pay attention to the friction of the Hee tents - the joint quality of the two workpieces: plastic case; an axial force and agitation welding robot operation. Heart and stomach, which contributes to the frictional friction stir welding quantity 0968788A2, which proposes the spindle device of the axial force of the EU patent, which can control the spindle axis during the process of f & Xiangli. Clothing using a strain gauge (strain

03/0S4W; Γ ΓΓ Proposed in the process of friction stir splicing: = spindle structure of force and displacement 'The conventional spindle knot (4) force gauge (10) cet face duder) senses the axial force of a main shaft and another friction welding The amount of riding, : / _ number 'new output can independently control the probe and the shoulder of the "force and the friction of the control system (four) system. (d) the use of displacement meter (d1Splacement se bribe) measurement The displacement of the needle, and the axial force of the probe and the shoulder are respectively measured by the hydraulic blade and the dynamometer. The measuring device of the friction stir welding is used again, such as the US Patent Publication No. 2005/ No. 0_209A1, which proposes a method and a device for controlling the feeding force of the friction lion refining, and the force meter uses a _-feed force signal to control the rotation speed of a motor, so that the friction stir welding station maintains a certain value of the feed force. Furthermore, Soundararajan et al.

Machine Tools and Manufacture", International Journal Nos. 1577 to 1587 C:\Linda\PK Pat\PKI0171.doc ——γ - 1298029 Rubbing and welding machine Axial force. In addition, use *_/, even, ,,. - dynamometer to measure - measurement - feed force. Autumn /, ^ 彳 clamping table connected to another - dynamometer to one of the working bed power to enter the Γ movement system using the above various conventional friction to remove the splicing measurement tool - connection test: test Force meter. The method of measuring the joints with the workpiece clamping table and the joints of the P private lions can be determined by the wood and the pieces on the giant view, but the micromechanics can be Material = interface force, axial force and feed force to predict and control. Therefore, the measurement and control of the friction stir-up is unpretentious and the cows are fed into the cattle (four) two. The invention provides a kind of innovation and the progressive friction stir-up of the three kinds of Xianli, in order to dissolve in the friction Simultaneous measurement in the process _ interface = 2 to the money: axial force. A force is applied to the clamping assembly to measure the vertical force (i.e., the interface force) of the joint interface of the dissolved joint member. Further, a force gauge is placed in a melter feeder assembly for measuring the force (i.e., feed force) generated when the welded workpiece is fed to a welding tool. A dynamometer is placed in a support assembly for measuring the force (i.e., axial force) generated by the squeezing tool when squeezing the joint interface of the fused workpiece. Thereby, the force sensing signals of the three dynamometers hardly interfere with each other', so that the invention can simultaneously accurately measure the friction stir welding process: C:\Linda\PK PatNPKI0I71.doc nn/in/3〇/ni: 3i pm —8 — 1298029 Three forces. [Summary of the Invention] The bribe supply of the device-Qing _ listening to the test = and - the reading of the gift of the central person - dynamometer, to shoot; the success of the month has the ability to predict and control the combined quality of friction and fusion =

According to the invention, the friction and recording of the inspection county, which includes the setting::: one of the dynamometer workpiece clamping components is used for the pair of splicers: the dynamometer is used by the dynamometer When the workpiece is clamped, the device assembly is used to drive the 夹具#一 “一 熔 熔 ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” The dynamometer is used to measure the feed force generated when the singularity correction tool is fed. The third dynamometer is used to select the workpiece assembly and the workpiece assembly. The fusion feeder assembly is supported, and the third force gauge is used to measure the axial force generated when the workpiece is squeezed by the welding tool, thereby simultaneously measuring the friction stir welding The three and the other objects, features and advantages of the present invention will become more apparent and understood. The description of the formula is as follows: · Ming Zheng, as shown in Figures 1 and 2, in accordance with a preferred embodiment of the present invention Wipe C:\Linda\PK Pat\PK10I7I.doc nn/I0/30/0|:3| —9 — 1298029 The detection device for mixing and splicing includes – and the feeder _ 12 and — to #一炫接裴 一 一 主 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 Fixture assembly u set two force

For the younger brother, the force meter 112, a first-slide table 113, a fusion joint -= 〇, - the workpiece 3 〇, the main shaft 4Q, the 岐 seat (1), =, : 1 and the flat plate 116. The urging mechanism 111 is sequentially coupled to the first-measured force and the/or platform 113. The sway is between the first sliding table m and the fixing base 114, and is located at a top surface of the 塾6〇. The N-connected workpiece 30 has two fused rectangular plates 3〇ι ' and the two spliced rectangular 301 forms a joint interface 3 〇 2 when the urging mechanism 11 〗 3 () When the force is applied, the interface force Fx perpendicular to the joint interface 302 of the workpiece 3 () by the first dynamometer 112 is set. The welding tool 2 is disposed at the end portion of the main shaft 40 and the welding tool 2 is composed of a probe 2〇1 and a shoulder 2〇2. As shown in the figures 1 and 3A and 3B, the urging mechanism ill of the preferred embodiment of the present invention has a long round rod mi, a ring 1112, a screw 1113, a fixed block 1114, a ring ι 15 and a half. Spherical ring 1116. After the long round rod 1111 passes through a circular hole (not shown) passing through the screw 1113, the ring 1112 is nested at one end of the long round rod mi. The long rod n11 is used to apply a torque to the screw 1113, so that the screw 1113 rotates relative to a threaded hole [not shown] of the fixing block 1114 at 1298029. The threaded hole is used to engage the screw 1113 to guide The screw 1113 is applied to the first load cell 112 to apply the interface force Fx. The screw 1113 is inserted into the circular ring 1115 and the hemispherical ring 1H6, and a thrust is applied to the slide-type slide 113 via one end of the screw m3. The ring 1115 is provided with a hemispherical groove (not shown) and is sleeved on one end of the screw 1113 for abutting the hemispherical ring 1116 so that the screw m3 is opposite to the first load cell 112. The thrust can be aligned with the axis of the first load cell 112. In addition, the force applying mechanism ηι can also be selected as a hydraulic mechanism or a pneumatic mechanism. Referring to Figures 3A and 3B again, the first slide table 113 of the preferred embodiment of the present invention has a V-shaped slider 1131, two v-shaped flat roller guides, and a two-V-shaped base m3. The V-shaped flat roller guide 1132 is placed between the V-shaped slider 1131 and the V-shaped base 1133 so that the V-shaped slider 1131 can be rolled along the v-shaped plate when driven by the screw m3. The column guide 1132 moves linearly. The connecting block 115 is for mounting the first load cell 112 and is coupled to the V-shaped slider 1131. The spliced ® workpiece 30 is placed between the V-shaped slider 1131 and the mount 114, and the stalk is de-stressed by the urging force of the δ海螺杯1113. The interface force Fx of the dissolved workpiece 3q is measured by the first load cell 112. The fixing block ιη4, the V-shaped base 1133 and the fixing base 114 are mounted on the flat plate 116. The first slide table 113 mainly provides a low friction linear rolling function, and can be replaced by a general linear bearing in the present invention. Referring to Figures 1 and 4A, 4B, the fusion feeder assembly 12 of the preferred embodiment of the present invention has a second slide table 121 and a second load cell 122 C:\linda\PK Pat\PKIOI7l. Doc — 11 — 1298029 , a fusion feed mechanism 123 , a joint block 124 , a feed power unit ία and a flat plate 126 . The second slide table 121 is adapted to mount the workpiece clamp assembly 11. The third slide table 121 is sequentially coupled to the second load cell 122 and the fusion feed mechanism 123. The splicing feed mechanism us applies a feed force to the second dynamometer 122 and the second slide table 121 after the splicing tool 2 of the spindle 4 squeezing the joint interface 302 of the fused workpiece 30 The feed force is formed by the dynamometer 122 measuring the suction workpiece 3 to be fed along the welding tool 20 in the joining direction. Referring to Figures 1 and 4A and 4B, the second slide table 121 of the preferred embodiment of the present invention has a V-shaped slider 1211, a V-shaped flat roller guide 1212, and a V-shaped base 1213. The V-shaped flat roller guide 1212 is placed between the V-shaped slider 1211 and the AV-type base 1213 so that the V-shaped slider 1211 can linearly move along the V-shaped flat roller guide i2i2. . The flat plate 116 is mounted above the v-shaped slider 1211 to join the workpiece clamp assembly 11. The connecting block 124 is for mounting the second dynamometer 122 and is coupled to the v-shaped slider 1211. In addition, the second slide table 121 is mainly provided with a low friction linear rolling function, and can be replaced by a general linear bearing in the present invention. Referring to Figures 1 and 4A and 4B, the preferred embodiment of the present invention = the feed mechanism 123 has two bearing blocks 1231, two ball bearings 1232, a ball screw I233, and a ball nut (2) heart-ball nut. 1 condition, 2 pins 1236, 2 compression springs 1237, half sphere rings 12 2 and 2

1239 ° ^31 1232T to place the two ends of the New Zealand rod I233 via the roll_1232 in C:\Linde\PK Pat\PKIOI7J.doc

00/10/30^01:31 PN —12 — 1298029 This bearing housing is located inside 1231. The ball side 1234 is mounted in the thief ball nut case 1235, and is engaged with the ball screw 1233 p to convert the rotary motion of the ball screw 1233 into a linear motion, thereby providing a feed force Fy required for the friction welding. The pin 1236 and the nut are used to connect the ball nut case 1235 with the coupling block 124. The compression spring 1237 is interposed between the ball nut case 1235 and the connecting block 124 for applying a preload to the second load cell 122. The hemispherical ring 1238 is disposed between the ball nut case 1235 and the second load cell 122, and is guided to guide the feed force Fy to the axis of the second load cell 122. The feed dynamic state 125 has a servo motor 1251, a support frame 1252, and a coupling shaft 1253. The feed power n 125 produces a power source for the fusion feed mechanism 123. The support frame 1252 is for supporting the servo motor 1251. The 0-joint axis is a 1253 system for connecting the main shaft of the servo motor 1251 (not shown) to the ball screw 1233. The support frame 1252, the bearing housing 1231 and the V-shaped base 1213 are commonly mounted on the flat plate 126. Referring to Figures 1 and 5A, 5B, the support base assembly 13 of the preferred embodiment of the present invention has a third slide table 131, a tapered cylinder 132, a second load cell 133, and a base column 134. And a flat plate 135. The fusion feeder assembly 12 is mounted above the end surface of the third slide table 131. The third slide table i3i, the tapered cylinder 132, the third load cell 133, and the base column |34" are sequentially connected. When the welding tool 20 presses the joint interface 302 of the welded workpiece 3, an axial force is applied to the third slide 131, the tapered cylinder 132, the first load cell 133, and the base post 134. By the third force measurement C:\Lin0a\PK Pat\PK1017Ldoc —13 —

Nfi/IQ/30/0I: 31 PM 1298029 The welding tool 20 is pressed to press the joint interface of the welded workpiece 30. 302 An axial force Fz is formed. • Referring again to FIGS. 1 and 5A and 5B, the second slide table 131 of the preferred embodiment of the present invention has a V-shaped slider 1311, a V-shaped flat roller guide 1312, and a V-shaped base 1313. . The V-shaped flat roller guide 1312 is placed between the V-shaped slider 1311 and the V-shaped base 1313 so that the V-shaped slider 1311 can move linearly along the V-shaped flat roller guide 1312. . The flat plate 126 is mounted above the top surface of the V-shaped slider 1311 for joining the fusion feeder assembly 12. The tapered cylinder 132 is disposed between the V-shaped slider 1311 and the third load cell 133 for guiding the axial force Fz to the axis of the third load cell 133. . The base post 134"" is used to support the third load cell 133, the tapered cylinder 132, and the serpentine slider 1311. The V-shaped base 1313 and the base post 134 are mounted on the rectangular flat plate 135. The third slide table 131 mainly provides a low-friction linear rolling function, and can also be replaced by a general linear bearing in the present invention. Referring to Figures 1 to 5, this embodiment provides a typical test result for the friction stir welding operation environment, wherein the material of the fusion tool 20 is selected as a high speed steel, and the welding tool 2 probe 2 The outer diameter of the crucible 1 is 3 mm, the length is 2.82, and one end of the probe 201 has a hemispherical radius of 1. 5 mm; and the shoulder 202 of the welding tool 20 has an outer diameter of 12 mm and a length of 60 mm. The welded workpiece 30 is selected to be 6〇61_T6 aluminum alloy rectangular 7 plate having a length of 6 legs, a width of 20 mm, and a thickness of 3 legs. Welding operation · The welding tool 20 has a rotation speed of 800 rpm and a feed speed of 20 mm/min. , the initial interface of the joint interface 3〇2 of the welded workpiece 30: C:\Linda\PK Pat\PKl〇|7i. doc 〇fi/in/3n/ni; 3i pm —14 — 1298029 Interface force Fx (or clamping Force) is 2kN. • Referring to Figure 1 i 6 , during the friction stir welding process, • the first force gauge 112, the second load cell 122 and the third load cell 133 respectively measure the interface force Fx , the relationship between the feed force Fy and the axial force & and the welding time. Referring to FIG. 6(a) and FIG. 6(1), the interface force Fx is slowly increased to 5 kN when the welding tool 20 presses the joint interface 1〇2 of the welded workpiece 3, and the feed force is increased. After rising to U3kN, the axial force Fz rises rapidly to 4 and then quickly drops to 2kN. Then, the welding tool 2〇 is squeezed and the material is welded and the 3G reading interface is left as friction preheating. _,] 守守' The interface force Fx slightly rises to 5.2kN, and the feed force Fy varies between "〇" and 0.2kN 'the axial force Fz varies between 2 and. Then, in the fusion During the feeding period, the interface force Fx is slowly reduced to 2kN, and the feed force Fy is maintained at 〇1, and the axial force & maintains about 2.5kN. The feed is stopped at the fusion (generally referred to as holding extrusion) During the period π ' 5 hai, the interface force Fx drops to 16 kN, and the feed force changes between = lkN and O.lkN, and the axial force Fz falls to about (4). Finally, the 忒 welding tool 2 〇 exits the quilt After welding the joint interface of the workpiece %, the interface force Fx slowly drops to 〇.2kN, and the feed force Fy and the axial force Fz rapidly drop to Please refer to Fig. 6(c), which shows a photograph of the appearance of the mating surface after the splicing time is about 85 seconds. Thereby, the 测 置 熔 熔 置 置 置 置 置 置 置 置 置 置The 112, the dynamometer I22 and the third dynamometer (7) simultaneously accurately measure the interface force Fx, the feed force Fy and the axial force Fz, respectively, and the step can be predicted with C:\Linda\PK Pat\ PK10I71.doc

—15~ Ofi/I0/30/01:31 PW 1298029 Controls the bonding quality of friction stir welding. W The above 4 '帛 2 ® invention is used in the friction stir welding of the 2 in the workpiece fixture assembly ut placed the first - dynamometer (1) '忒 first dynamometer 112 is used to measure The interface force Fx perpendicular to the interface of the welded workpiece 3 is perpendicular. In addition, the second load cell 122 is disposed in the flashing feeder group=the second load cell 122 is configured to measure the welded workpiece 30 and feed the welding tool 2 in the joining direction. Time = generated feed force Fy. Furthermore, the third dynamometer 133 is disposed in the support base assembly 13, and the third dynamometer n3 is used to measure the bonding boundary of the welded workpiece 3G. The axial force Fz of the fegj produced by the shaft. Thereby, the force sensing signals of the first, second and third dynamometers ι 2, ι 22 = 133 hardly interfere with each other, so that the invention can simultaneously accurately measure the three forces in the friction stir welding process, and further Predict and control the combination of friction stir welding. Although the present invention has been disclosed in the above-described preferred embodiments, it is not intended to limit the invention, and it is to be understood by those skilled in the art that the present invention may be modified and changed without departing from the spirit and scope of the invention. The range of # is listed in the scope of the patent application described later.

C:\Linda\PK pftt\pKi〇ni,d〇c —16

0Γι/Ι0/3()/01:3Ι PH 1298029

V [Simplified description of the drawings] Detection of friction stir welding of the example Detecting the friction stir welding of the application example Fig. 1 : Combination of the three-dimensional and partial perspective view of the preferred device of the present invention An exploded perspective view of the device. The workpiece holder assembly of the embodiment 3A, 3B is a preferred exploded perspective view and a combined perspective view of the present invention.

4A, 4B are exploded perspective and assembled perspective views of a splice feeder assembly in accordance with a preferred embodiment of the present invention. 5A, 5B. A perspective view of a preferred embodiment of the present invention. Fig. 6 is a diagram showing the relationship between the feed force Fy and the welding time in the preferred embodiment of the present invention. [b] A diagram showing the relationship between the interface force Fx and the axial force fz and the welding time in the preferred embodiment of the present invention. [c] A preferred embodiment of the preferred embodiment of the present invention, the appearance of the welded surface of the workpiece to be welded after the fusion feeding for about 85 seconds. [Main component symbol description] 111 Force mechanism 1112 ring 1114 fixed block 1116 hemispherical ring 11 Work clamp assembly mi long round rod 1113 screw 1115 ring

C:\Lindfl\PK Pat\PK10I71.doc ~ 17 1 06/10/30/01:31 PM 1298029 112 The first dynamometer. 1131 V-type slider 1133 V-type base 115 connection block 12 k access Assembly 1211 V-type slider 1213 V-type base 123 Dissolving feed mechanism # I232 Ball bearing 1234 Ball nut 1236 Pin 1238 Hemispherical ring 124 Connection block 1251 Servo motor 1253 Coupling 13 Support base assembly • 1311 V-type Slider 1313 V-shaped base 133 third dynamometer 135 plate 201 probe 30 welded workpiece 302 joint interface 50 working bed table 113 first slide table 1132 ν-type flat roller guide 114 fixed seat 116 plate 121 second Slide table 1212 ^^ type flat roller guide 122 second dynamometer 1231 car by seat 1233 ball screw 1235 ball nut box 1237 compression spring 1239 nut 125 feed power unit 1252 support frame 126 plate 131 third slide Table 1312 V-type flat roller guide 132 Conical cylinder 134 Base post 20 Solvent tool 202 Shaft shoulder 301 Dissolved rectangular plate 40 Spindle 60 Pad OR/m/30/Ol —18 —

Claims (1)

1298029 X. Applying for the patent garden: '1, = type of rubber _ mix material inspection (four) set, which includes: - Workpiece clamp assembly, with "fixed seat, - the first - slide table, a force application mechanism, the fixed Between the seat and the first slide - the miscellaneous workpiece - the dynamometer is placed in the j mechanism (3) H dynamometer is used to measure the amount of /, Μ & force mechanism applied to the welded workpiece One interface force. • = feeder assembly with - second slide, 1 dynamometer melt feed mechanism and a feed power, the second slide, ^ the workpiece clamp assembly, the second The dynamometer is set to _first: slide A _ is connected to the mechanism. 'The second dynamometer is used to measure the feed force of the ί workpiece to the feed aid, the feed power system Providing a power source to the transfer mechanism; and a support base assembly having a first:;; A; knowing that a brother - πσ, a younger two dynamometer and a base column 'the third slide The third dynamometer is placed on the third sliding table above the end face: the third dynamometer is used between the basic columns Measure one of the axial forces when the spliced workpiece is squeezed in the splicing work; /, = the bad, the second and third dynamometers in the friction stir the refining day # The interface force and axial force of the workpiece are welded.逍, 口2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Solution roll C:\Linda\PK Pat\PK10171.doc —19 〇fi/in/3〇/ni:3i ph :=The column guide is placed on the v-shaped slider and the “National Roller Guide, :申:工:1] The friction stir welding test package described in item 2; the first slide, the second slide table and the third slide table are selected from the following: - Shen It: Range 1 The friction stir welding detection device/middle force mechanism is provided with a screw, a hemisphere, the screw mine should be placed in the spheroid ring and the ring, and the second is used to drive the _V-shaped slider to ride the bribe. The workpiece is applied with a force - the hemispherical groove is provided in the ring, and the side is 'on the side of the ring and the guiding force of the screw is aligned with the first measuring force. According to the application of the full-time fourth item, the mixing fork, "the mechanism is also equipped with a long round rod, which is equipped with a circular hole for applying a torque to the screw. According to the application of the patent (4) 4, the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The 所述 转 ! : :!: The urging mechanism is selected from a liquid house mechanism and a pneumatic mechanism: according to the scope of patent application! The detection of the friction fresh turn mentioned in the item ^/10/30/01:31 pm —20 — 1298029 5 two-roll IS-ball screw and two bearing housing. ~Bead screw provides the feed force required for friction stir-fitting. The detection of the friction-mixing device described in item 8 is additionally provided with a ball nut and a roll; the two screws are mounted on the ball Inside the nut box, and converted to display _ m (four) === in the ball nut box with the second test /, set 12 :? and _ block, ':=:::-bead-one, The county is tangent _ service, ^ 联 = C: \ Linda \ PK Pet \ PKI0I7J.doc 06/10/30/01: 31 PW -21 ~ 1298029 The system is connected to one of the servo motor spindle and the fusion into The ball screw for the mechanism. 13. The friction stir welding detecting device according to claim 1, wherein the support base assembly is further provided with a conical cylinder, and the V-shaped slider disposed on the third sliding table and the third measuring force Between the gauges, the axial force can be directed to the axis of the third dynamometer. C:\Linda\PK Pat\PKI0171.doc —22 — 00/10/30/01:31 PM