JPS60191701A - Machine tools with automatic measuring devices - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention is directed to a machine tool equipped with an automatic A1 measuring device μ for removing the paris and paris produced in the pressure welding part due to friction welding of friction bath welding pipes, especially drawn pipes used in oil well drilling.
-1. In general, drill pipes used for Tomaisen 4 drilling are usually cut separately at both ends of the main pipe 1 as shown in Figure 1.
One tool joint 2, 2 with a male and female thread that has been machined by force is friction-welded to each other, and the pressure relief part is cut and finished to complete one → Jl + pipe 4. . In this thick bath welding method, the inner diameter surface of the pressure part between the main pipe 1 and the tool joints 2, 2 has a paris 5.5 approximately symmetrical to the pressure tangent lines P and P as shown in Fig. 2. It occurs in a ring shape. Therefore, it is necessary to remove this paris 5 and finish the front and rear of the pressure tangent line to make it rt9 smooth. In FIG. 3, when performing this processing using the NC lathe 3, first the dug pipe 4 is carried in by the transport vehicle 6, the pipe 4 is scooped and pushed into the shell through hole 8 of the main shaft 7, and the pipe is tied with the chuck 9. do. 1 I with the main axis 7 ++u Sound A 4+ -One stroke Jy
, Wagome 'l' w r h →-116111b1
) It is possible to scrape off the L-L part of one side of the paris 5 in the second position up to the pressure tangent line 1), but after passing this pressure tangent line P, the base of the paris 5 is removed. There is a problem that the remaining portion becomes a ring shape and remains around the tunnel 4. To prevent the above problem, it is necessary to measure the position of the pressure tangent line P and cut from both sides of the paris 50 to the position of the pressure tangent line P. Conventionally, from the pipe end to the pressure tangent line Measure the approximate location of 1 (7) in advance before attaching the bored pipe to the NC lathe, and input the value into the numerical tli control device I% (to calculate the distance) from one side of the 11 pipe to the pressure tangent line. Then, a burr single machine, that is, an NC lathe, is controlled so as to cut the burr from the other side of the pipe to the crimped line.This cutting process allows the burr to be completely scraped off without remaining in a ring shape at the crimped part. However, since the pressure tangent line of the 311 pipe differs slightly for each pipe, the position of the pressure tangent line for each pipe must be measured and the values manually input into the numerical control device. This requires a lot of time and effort.Since inputting numerical values is done manually, input errors may occur due to erroneous operations, which becomes a problem in machining work.The present invention solves the above-mentioned problems. In view of this, it is a good idea to automatically measure the position of the pressure tangent line from the machine origin before cutting the paris using the measuring device of the number control lathe for deburring, and calculate the stiffness measurement value using the numerical control device. The present invention provides an automatic deburring single wall that measures and calculates, makes corrections to a predetermined tool bus program, and mechanically controls a deburring machine so that the deburring machine can accurately cut out the deburring of the pressure welding part. An embodiment of the numerically controlled lathe for automatic deburring processing of the present invention will be explained in detail with reference to the drawings. Fig. 4 is a block diagram of the present invention, and the headstock 11 provided on the base 10 has a main 11qI+12 is rotatably supported on a shaft and is rotationally driven by an NC device k25.A hollow chuck 13 is attached to the tip of this main shaft 12.
Then, the pressure tangent line P is set to the chuck.
'? ¥ etc. are being held. A saddle 17 is mounted on another dowel on the base 10 so as to be movable in the 7+ axis direction parallel to the 111 line of the main shaft 12. has been done. …■
On the saddle 1f, the cross slide 18 is located at 1 of the main shaft 12.
The cross slide 18 is mounted on the cross slide 18 so as to be rotatable. A well-known instrument side device h'a, 20, which emits a signal by conduction of 1b air due to contact with a prong, is installed on the 1st track, and a cutting tool 2) is attached to the other track. Both the saddle 17 and the cross slide 18 are driven by a servo motor 22a.
. 22bKJ1. Via the reball screws 23a and 23bi,
1 drive. In addition, the positional control of the output is performed by the pulse generators 24a and 24b attached to the servo motors 22a and 22b, as shown in 4).
It depends◎ =++ +=,, + =+4 rivers, +": lj+ '
I /'1 /Is 41 +sud,'no effect J=t u
J →1jill 1. + Oi T! , paleocontrol (NC
) is connected to a central control unit (hereinafter referred to as CPU) 26 of the device 25 via a data input circuit 27. This input data is measured and calculated by the CPU 26, part of it is input to the machine control device 29 via the data output circuit 28, and the other part is connected to the CPU 26. 7.1 First memory device &30 is stored in the memory. The pulse generators 24a, 24b are connected to the CPU 26 via an interpolator position control circuit 32. On the other hand, this interpolator position control device 32 is connected to the pulse generator 24a.
, 24b, the basket control signal is transmitted to the speed control circuit 33, and the speed of the servo motors 22a, 22b connected to the speed control circuit 33 is controlled. It is designed to perform position control. Furthermore, an information input device 35 is connected to the CPU 26 via an information input circuit 34, and this input device 35 is connected to the "R anastomosis 1 q σ) weighted production i-so" on which the white side device a20 is placed. N [i, middle 7F odd 5 r γ
Movement determined by do p ■ camphor ii 3ba'f! 4. Burr processing 1
The tool path and machining information (spindle rotation, feed rate, etc.) are input as data. 1Jlj As shown in FIG. 5, the respective symbols are the originals (Xo, Zo
), Z-direction chuck 13 and burr 15 pre-A1, j1 with a slight addition of manual Z from the 1 highest level! Release 1, radial burr at a minute distance from the workpiece 16 diameter 1)

[h] 1 shows the fixed position 11. These values are for chuck 1 of warp 16.
The white side of the skewer is determined by the leaf, shape, and position of the burr from 3. The optimal value when moving 20 is what blocks the block. Further, a key manual oil refinery 37 is connected to the CI:'U 26 via an input circuit 36, and the workpiece 1 is connected here.
According to the persimmon force 1 of 6, the outer diameter and inner diameter of the workpiece 16 are 11.
The materials, etc. of r1 and work 16 are manually operated by an operator. The data inputted from the key input device 37 is stored in the memory device 31KR. Figures 5 and 6 are flowcharts of the first step of measuring the topology of the pressure tangent line and il? device state 2 of device row 20
0a''<sushi, 1, and 50-63 in FIG. 6 indicate each step of the flowchart 1-0 First, step 50.
-Z1, that is, -(Z
o, W+) point and -1)X in the direction of X 1til+1, i.e. -X. 611111 at +(-, i+U+) point
20 devices are moved, and at 52, the measuring device 1. +20'
x Contacting the other end surface of the burr 15 of the workpiece 16 in the Z-axis direction, the external No. 16 of the measuring device IL20 is measured at the contact point of the Z-axis at this time, for example, Zs'l = first memory device Store in 30 memories. Next ij+R
Set the self-measuring device 20 at 55.56 -W3 in the return distance Z-axis direction.
．． Fast forward +U in the X-axis direction to separate from the burr 15. Furthermore, at 57.58, +W2.
Fast forward -U in the X-axis direction. Exit m K11A It is formed symmetrically with respect to P, and the one end surface of 5 is measured 4 times. Return it to the right side in the figure in the 2-axis direction at 59 and contact one side of the burr 15 at 60. Determine whether or not it is the first time. At the time of contact, the trace 1 device i=
: Outer g of 20 (Z pull at this time at 61 due to l signal; 1
ILL's (i,"J'H1lj point 1r11 then Z6
is stored in the first memory or memory 2 of the target 30. Next, in 62, il It is stored in the memory 3, and the final step 63"'C"1jlJ notation d111 f17.20 prepares for the next measurement without returning to the origin. Figure 7 shows the cutting process in which deburring is performed based on the above four sub-results. This is a diagram showing an example of the order, and the numbers in [ ] indicate the X axis and 6
Indicates the coordinates of hatred. First, after indexing the tool 21 with the rotating cutter t319,
is the origin P. CXo * "o) is also moved at the start position. Here, 011 ""I + u, l Wll-'W-"
The workpiece 6 is rotating together with the main shaft 12 at a predetermined speed. Next, move the tool 21 at a slow speed to start cutting, and bring it into light contact with the outside diameter of the workpiece 16. Here, the tool 21 is attached to the burr 15)), +X Place t of P
Take a close look at the alpha side. “Next, remove the remaining burr 15 with the tool 21. Next, move the tool 21 at a slow speed to the start of cutting, and
Touch it lightly. Here, move the goni tool 21 in two directions until it contacts the other force end of the burr 15, and continue to press &hM)
' up to the position, D Z, +Z. That is, the other side 2 2 of the burr 15 is cut to Ps (Xo, ) and the tool 21 returns to the origin P after 1 step f^. (Xo, Zn) is 1 no. If the workpiece 16 is a dug pipe, the edges of the contact portion between the male and female threaded tool joints and the main pipe can be cut in the same manner. 1. The above programming of measuring the position of the knee I--moment tangent and cutting 111 pertains to the cutting of the outer surface of the workpiece, but the cutting of the inner surface of the workpiece can also be carried out in a similar manner. According to the unexploded rib, the numerical value for deburring processing Jl
Attached to the swivel tool post of a control lathe, the open side device automatically measures the Paris operating range IL1 (N1) and measures the d
J1 on the other side of the rotating tool post based on the l18+11 value.
Since it is possible to completely cut off the paris using a single cutting tool with a q attachment, there is no need to measure the paris size before installing the workpiece on a numerically controlled lathe for deburring processing, and the measurement value can be measured manually. The time and effort required to enter data into an input device via the computer is saved. At the same time, the number of operations due to input errors, incomplete machining, etc. can be reduced, and complete and good machining can be performed. Furthermore, it goes without saying that the present invention can be used not only as an automatic deburring machine for removing deburrs caused by friction welding of drilling pipes used in oil well drilling, but also for deburring workpieces that are subjected to friction welding such as friction welding pipes and other workpieces. do not have.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the digging pipe of friction m #f111, Figure 2 is a cross-sectional view of the digging pipe after friction welding, Figure 3 is an overall side view of a conventional burr scatterer, and Figure 4 is the main The schematic structure shown as an example of the invention I% Fig. 5 is a flowchart of the position i of the pressure tangent line, the flow chart of the T-piece where measurement is performed, and the sixth factor explains the movement of the iron rack in total 311.1 times. 7 are diagrams for explaining the movement of the tool in Paris cutting. 10...Base, 12...Main 111h + 15.
··Paris. 16...Work, 17...Tiddle, 18...Cross slide, 19...Turret, 20...Measuring instrument 4
゜2J... Cutting tool, 25... Numerical control device. 26... Central control unit, P... Pressure tangent line.

Claims (1)

[Claims] In a numerically controlled lathe that has a feedback position detector and removes burrs on the outer periphery of the workpiece that occur during friction welding due to relative movement between the workpiece and the tool, the turret 111 +]
A measuring device disposed at the first measuring position (Z, ) and a second measuring position by moving in the raw 'IqII ilJ+ line direction (Z East U) to measure the par width of the workpiece. The first and second sections memorize the positions of positions m and (Za), respectively.
a memory means, an operation 'i'fm for processing the 1''== according to the above-mentioned memory contents and setting the pressure contact line of the joint part, and a control means for shifting the machining origin based on the result of the exercise. siJ Article Sentence 1 From the 2nd 61 positioning position, process IJ-D2 uy by feeding in the Z-axis direction. After 1 minute, move from the opposite side to the 1111 specific tangent line by feeding in the Z-axis direction. Waiting for the removal of Paris, the i-motor control unit 1 is installed on the construction site.