JP4651782B2 - Spiral blade automatic processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic processing machine for processing a spiral blade of a shaft member equipped with a spiral blade.
[0002]
[Prior art]
For example, in the excavation shaft 1 in the ground excavation apparatus, as shown in FIG. 13 (a), a spiral blade 2 is spirally attached to a single length steel pipe 3, and connecting members 4 and 5 are attached to both ends. It is a shaft member, and a plurality of these excavation shafts are added to the rotation shaft of the ground excavation device and used as an excavation shaft for deep hole excavation. As shown in FIG. 13B, the spiral blade 2 is obtained by welding a blade member 6 whose one end of a disk is cut and the cut end is opened in the vertical direction continuously to the outer peripheral surface of the steel pipe 3.
[0003]
When the spiral blade 2 of the excavation shaft is welded to the entire length of the steel pipe 3, for example, the blade member 6 is continuously formed on the outer peripheral surface over the entire length of the steel pipe 3, and the spiral blade is formed by temporary welding. Prepare the one with the connecting members 4 and 5 attached to it, place it on the support mechanism that supports the steel pipe 3 in a horizontal state, and perform the main welding on the temporary welding part at the base of the spiral blade 2 while rotating it. is doing.
[0004]
The automatic processing machine for main welding the spiral blade 2 includes a support mechanism for rotatably supporting both ends of the steel pipe 3, a drive mechanism for rotating the steel pipe 3 supported by the support mechanism at a predetermined rotational speed, and a root of the spiral blade. A machining mechanism that moves in parallel with the excavation shaft supported by the support mechanism in a state in which the welding torch of the welding machine is in contact with, and a movement mechanism that moves the machining mechanism at a predetermined movement speed, Under the control of the computer, as the excavation shaft rotates, the welding torch of the welding machine equipped in the processing mechanism is always in contact with the root part of the spiral blade and moved from one end of the spiral blade of the steel pipe to the other end. An automatic processing machine is used that performs the main welding of the welding site.
[0005]
For example, the computer of the automatic processing machine calculates the processing position of the spiral blade based on the information regarding the installation pitch of the spiral blade attached to the excavation shaft and the information on the rotational speed of the excavation shaft, which are input in advance. It is to be moved.
[0006]
Further, since the spiral blade 2 of the excavation shaft 1 is a portion that is easily worn during excavation work, when the worn portion is restored, the tip portion of the spiral blade is cut by a predetermined width, and a steel material is newly welded to the cut portion to build up the cladding. To restore. Also in this case, in the above-described automatic processing machine, the welding torch is changed to the cutting torch, and the processing mechanism is moved according to the rotational speed of the excavating shaft while the cutting torch is applied to the tip portion of the spiral blade. Cut the worn part over the entire circumference of the spiral blade, then replace the cutting torch with a welding torch, and move the machining mechanism according to the rotational speed of the drilling shaft with the welding torch applied to the tip of the spiral blade The tip of the spiral blade is piled up.
[0007]
[Problems to be solved by the invention]
In the above-mentioned known automatic processing machine, computer control is necessary with a complicated two-dimensional or three-dimensional program in order to cause the welding or cutting torch to follow the spiral blade. Further, since the excavation shaft is not a precision machine part, the mounting accuracy of the spiral blade is not so precise. For this reason, only by computer control, a processing machine will shift | deviate from the predetermined to-be-processed part of a spiral blade, and an exact process cannot be performed.
[0008]
Then, an object of this invention is to provide the automatic processing machine which can process the predetermined site | part of the spiral blade | wing of a shaft member simply and reliably.
[0009]
[Means for Solving the Problems]
In the spiral blade automatic processing machine according to the present invention, as means for solving the above problems, a support mechanism that rotatably supports a shaft member having a spiral blade mounted on the outer periphery, and a rotation drive mechanism that rotationally drives the shaft member; Three poles are erected, and are disposed on a carriage that is movable in the axial direction of a shaft member supported by the support mechanism, and a central pole of the carriage. A welding or cutting torch that can contact the workpiece and a left and right pole of the carriage are arranged horizontally so as to be in contact with the other side surface of the spiral blade. A guide portion that is possible, and when the right side surface of the spiral blade is processed, a welding or cutting torch is brought into contact with the processed portion of the right side surface of the spiral blade, and the left guide portion By fixing the spiral blade in contact with the left side surface of the spiral blade, as the shaft member rotates, the left guide portion is pushed against the left side surface of the spiral blade, and the carriage moves on the shaft member. When the left side surface of the spiral blade is processed, the torch for welding or cutting is brought into contact with the portion to be processed on the left side surface of the spiral blade and the right guide portion is moved to the spiral side. By fixing the blade in contact with the right side surface of the blade, as the shaft member rotates, the right guide portion is pushed by the right side surface of the spiral blade, and the carriage moves in the axial direction of the shaft member. It is characterized by being driven to the right.
[0010]
A swing member installed on a central pole on the carriage so as to swing in a direction perpendicular to the shaft member, and having the welding or cutting torch disposed at one end thereof, and provided on the swing member A contact portion that contacts the outer peripheral surface of the shaft member to determine a height position of the welding or cutting torch, and a balancer disposed at the other end of the swing member. And
[0011]
The support mechanism includes an adjusting mechanism for adjusting a rotation speed of the excavation shaft.
[0012]
The present invention can be generally applied to a shaft member equipped with a spiral blade, but is particularly suitable for a drilling shaft in a ground excavation apparatus.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an automatic processing machine for spiral blades according to an embodiment of the present invention will be described with reference to the drawings.
[0014]
First, the case where the base of the spiral blade 2 formed by temporarily welding the blade member to the steel pipe 3 is subjected to main welding using the automatic processing machine of the present invention will be described.
[0015]
As shown in FIG. 1, the automatic processing machine slides along a processing table 11 that rotatably supports the excavation shaft 1 laid horizontally, and the excavation shaft 1 supported by the processing table 11. A machining unit 10 for machining the root portion of the spiral blade 2 of the excavation shaft 1 is provided.
[0016]
The excavation shaft 1 is obtained by temporarily welding a spiral blade 2 formed by continuously forming blade members 6 on a steel pipe 3, and connecting portions (4) for connecting the excavation shafts 1 to each other in excavation work. , 5) is attached.
[0017]
The processing table 11 is disposed so as to be movable on the first rail 21 laid on the base 13, a rotation drive mechanism 23 disposed on one end of the first rail 21, and the first rail 21. A rotation support mechanism 25 is provided.
[0018]
The rotation drive mechanism 23 holds the connecting portion 4 at one end of the excavation shaft 1 by a chuck portion 27 and rotates the excavation shaft 1 by a motor 28. The motor 28 includes a transmission 29 and can freely change the rotation speed.
[0019]
As shown in FIG. 2, the rotation support mechanism 25 includes a moving table 31 that moves along the first rail 21, and a connecting portion 5 of the excavation shaft 1 that is attached to the moving table 31 in a state in which the height can be adjusted. And two rollers (32, 33) for rotatably supporting the motor. The moving table 31 is moved by the lock mechanism 34 on the first rail 21 according to the length of the excavation shaft 1 so that the rollers (32, 33) can support the connecting portion 5 of the excavation shaft 1. To fix. The height of the rollers (32, 33) adjusts the amount of expansion / contraction of the support member 35 according to the diameter of the excavation shaft 1 so that the excavation shaft 1 rotates in a horizontal state.
[0020]
As shown in FIG. 3, the processing unit 10 includes a carriage 43 that moves on a second rail 41 arranged parallel to the excavation shaft 1 and spaced apart from the first rail 21. A welding torch 47 disposed on the first pole 45 erected at the center, a contact portion 48, a second pole 49 and a third pole 49 ′ erected on both sides of the first pole 45. And a guide mechanism (51, 51 ′) as a provided guide portion. As shown in FIG. 4, the carriage 43 includes a roller 44 and can move on the second rail 41 with a light force.
[0021]
As shown in FIG. 4, the welding torch 47 swings in a direction perpendicular to the excavation shaft 1 in a state in which the height of the mounting position can be adjusted to a pole 45 erected in the center of the carriage 43. The swinging member 53 installed in this way is attached to the tip of the excavation shaft 1 side. The excavating shaft 1 side of the rocking member 53 is provided with a telescopic structure 54, and an extensible mechanism 55 for finely adjusting the position of the welding torch 47 in the direction perpendicular to the rocking member 53 at the tip thereof, An expansion / contraction mechanism 57 that finely adjusts the position of the welding torch 47 in the length direction of the moving member 53 and a rotation mechanism 59 that adjusts the processing direction of the welding torch 47 are sequentially provided. The welding torch 47 is attached to a rotating mechanism 59, and the tip 46 of the welding torch 47 can be directed to a predetermined portion of the spiral blade 2 of the excavation shaft 1. As shown in FIG. 4, for example, the welding wire 47 a is automatically supplied to the welding torch 47 from the automatic supply device 69 of the welding wire 47 a attached to the upper end of the pole 45. ing.
[0022]
The contact portion 48 is a member for determining the height position of the tip 46 of the welding torch 47, and the position of the contact portion 48 in the direction orthogonal to the swing member 53 on the excavation shaft 1 side of the swing member 53. Is attached via an expansion / contraction mechanism 61 that adjusts the position of the abutting portion 48 in the length direction of the swing member 53, and is attached along the outer peripheral surface of the steel pipe 3 of the excavation shaft 1. The roller member 48a that rolls is provided at the tip. This abutting portion 48 abuts the tip 46 of the welding torch 47 on the spiral blade 2 while adjusting the angle of the swinging member 53 by bringing the roller member 48a into contact with the outer peripheral surface of the steel pipe 3 of the excavating shaft 1. For adjusting to a predetermined height.
[0023]
Further, a balancer 63 for maintaining a balance with the excavation shaft 1 side is attached to the side opposite to the excavation shaft 1 of the swing member 53, and the roller member 48 a of the abutting portion 48 is attached to the excavation shaft 1 with a light force. The balance with the excavation shaft 1 side is maintained so as to hit the outer peripheral surface of the steel pipe 3. In addition, on the attachment portion 65 where the swing member 53 is attached to the pole 45, a restriction piece (66, 67) for restricting the vertical movement of the swing member 53 is attached. The lower restricting piece 67 includes a pin 68 that can adjust the amount of restriction so that the swinging member 53 does not interfere with the spiral blade 2.
[0024]
For example, as shown in FIG. 5, the welding torch 47 of the processing unit 10 is attached to a predetermined part to be processed of the spiral blade 2 of the excavation shaft 1 via the expansion / contraction mechanism (55, 57) and the rotation mechanism 59. The tip 46 can be directed at a predetermined angle. Further, by extending the expansion / contraction mechanism 61 in the direction perpendicular to the swing member 53 in the contact portion 48, the tip 46 of the welding torch 47 can be adjusted to a predetermined height of the spiral blade 2 as shown in FIG. it can. When performing a cutting operation, a cutting torch is attached instead of the welding torch 47.
[0025]
As shown in FIG. 1, the guide mechanism 51 includes a horizontal arm 71, a roller member 72, a locking member 73, and a mounting bar 75 in FIG. This is a mechanism for moving the machining unit 10 as the excavation shaft 1 rotates. A guide mechanism 51 ′ having the same structure as the guide mechanism 51 is disposed on the right side of the pole 45 of the carriage 43.
[0026]
As shown in FIG. 7, the horizontal arm 71 includes a cylindrical mounting portion 70 that can be attached to the pole 49, and is attached to the pole 49 so as to rotate at an arbitrary height and horizontally. is there. At the tip of the horizontal arm 71, there is an attachment portion 74 for attaching the roller member 72. The horizontal arm 71 is formed with a plurality of engagement holes 76 for attaching the attachment bar 75 along the length direction.
[0027]
Roller member 72 is a roller bearing that is inserted into Utatedojiku 90, the mounting portion 74 of the tip of the horizontal arm 71 insert the rolling axis 90, the roller member 72 may contact with the side surface of the spiral blade 2 Thus, the mounting position is adjusted up and down and fixed with screws 77.
[0028]
The locking member 73 is a member mounted on the horizontal arm 71 in the pole 49, and includes a locking pin 78 for mounting a mounting bar 75 described later.
[0029]
As shown in FIG. 8, the mounting bar 75 is a rod-shaped member whose length can be adjusted by a screw mechanism 79, and has a hook 81 that hooks into the engagement hole 76 of the horizontal arm 71 at one end and the other end. A locking hole 83 to be inserted into the locking pin 78 of the locking member 73 is provided. For example, as shown in FIG. 1, the mounting bar 75 is adjusted in length by a screw mechanism 79, and then hooks the hook 81 to the engaging hole 76 of the horizontal arm 71, thereby locking the pawl 49 ′ on the opposite side. The locked hole 83 is inserted into the locking pin 78 ′ of 73 ′ and attached. Thereby, the position of the roller member 72 of the left guide mechanism 51 can be reliably fixed. Further, the right guide mechanism 51 ′ can be fixed in the same manner.
[0030]
Hereinafter, the usage method of the automatic processing machine of this spiral blade | wing part is demonstrated.
[0031]
As shown in FIG. 1, one end of the excavation shaft 1 in a state where the blade member is temporarily welded is sandwiched by the chuck portion 27 of the rotation drive mechanism 23, and the other end is supported by the rollers (32, 33) of the rotation support mechanism 25. . A welding torch 47 is attached to the processing unit 10.
[0032]
When the right side surface of the spiral blade 2 is welded, as shown in FIG. 9, the processing unit 10 is moved to the right end of the excavation shaft 1, and the tip 46 of the welding torch 47 is moved to the right end portion of the spiral blade 2. The roller member 48a of the abutting portion 48 is installed so as to roll on the outer peripheral surface of the steel pipe 3 of the excavation shaft 1 while contacting the base of the right side surface.
[0033]
Then, the roller member 72 of the left guide mechanism 51 is brought into contact with the left side surface 2a where the spiral blade 2 rises as the excavation shaft 1 rotates. Then, the length of the mounting bar 75 is adjusted by the screw mechanism 79, and the locked hole 83 of the mounting bar 75 is inserted into the locking pin 78 ′ of the locking member 73 ′ mounted on the right pole 49 ′. The hook 81 of the mounting bar 75 is hooked on the engagement hole 76 of the left horizontal arm 71 so that the position of the left guide mechanism 51 is fixedly installed on the welding torch 47. The right guide mechanism 51 ′ is installed in a direction parallel to the excavation shaft 1 so that the spiral blade 2 of the excavation shaft 1 does not interfere.
[0034]
As a result, as shown in FIG. 10, the roller member 72 of the guide mechanism 51 is pushed to the left side by the left side surface 2a of the spiral blade 2 rising as the excavation shaft 1 rotates in a predetermined direction. 10 and the welding torch 47 move to the left. By this movement, the root portion of the right side surface of the spiral blade 2 is sequentially processed. At this time, the machining unit 10 is moved by the guide mechanism 51 according to the rotation of the spiral blade 2, so that the machining speed of the welding torch 47 is adjusted by adjusting the rotation speed of the excavating shaft 1 in the rotation drive mechanism 23. Can do. Further, when the welding torch 47 has advanced to the left end of the excavation shaft 1, the computer automatically stops the welding torch 47 based on a proximity sensor (not shown) attached to the chuck 27.
[0035]
Next, when machining the left side surface of the spiral blade 2, as shown in FIG. 11, the machining unit 10 is moved to the left end of the excavation shaft 1, and welding is performed at the base of the left side of the left end portion of the spiral blade 2. The tip 46 of the torch 47 is applied, and the roller member 48a of the contact portion 48 is installed so as to roll on the outer peripheral surface of the steel pipe 3 of the excavation shaft 1.
[0036]
Then, the roller member 72 ′ of the right guide mechanism 51 ′ is brought into contact with the right side surface 2 a ′ where the spiral blade 2 rises as the excavation shaft 1 rotates. Then, the length of the mounting bar 75 is adjusted by the screw mechanism 79, the locked hole 83 of the mounting bar 75 is inserted into the locking pin 78 of the locking member 73 mounted on the left pole 49, and the mounting bar 75 is inserted. The hook 81 is hooked on the engagement hole 76 ′ of the right horizontal arm 71 ′ so that the position of the right guide mechanism 51 ′ is fixedly installed on the welding torch 47. The left guide mechanism 51 is installed in a direction parallel to the excavation shaft 1 so that the spiral blade 2 of the excavation shaft 1 does not interfere.
[0037]
As a result, as shown in FIG. 12, the roller member 72 ′ of the guide mechanism 51 ′ is pushed to the right by the right side surface 2a ′ of the rising of the spiral blade 2 as the excavation shaft 1 rotates in a predetermined direction. The entire processing unit 10 and the welding torch 47 move to the right side, and the base portion of the left side surface of the spiral blade 2 is sequentially processed. At this time, the machining unit 10 is moved by the guide mechanism 51 ′ according to the rotation of the spiral blade 2, so that the machining speed of the welding torch 47 is adjusted by adjusting the rotation speed of the excavating shaft 1 in the rotation drive mechanism 23. be able to. When the welding torch 47 advances to the right end of the excavation shaft 1, the welding torch 47 is automatically stopped by a computer via a proximity sensor (not shown) attached to the rotation support mechanism 25. ing.
[0038]
Next, when repairing the tip portion of the spiral blade 2, as a repair work, when repairing the tip portion of the spiral blade 2 having a high degree of wear by excavation work, after burning the tip of the spiral blade 2, The steel material is welded to the part and is piled up. When processing the tip of the spiral blade 2 as described above, the expansion / contraction adjustment mechanism 61 in the direction perpendicular to the swing member 53 of the contact portion 48 attached to the swing member 53 is extended, as shown in FIG. The tip 46 of the welding torch 47 is adjusted so as to hit a desired height of the spiral blade 2 as a processed portion of the spiral blade 2.
[0039]
In this case, in the burn-out operation with the burner, the spiral blade 2 is cut by replacing the welding torch 47 with the cutting torch. Further, in the build-up operation, the cutting torch is changed to the welding torch 47 and the steel material is welded.
[0040]
In the above case, the rotational speed of the excavation shaft 1 is adjusted by the rotational drive mechanism 23 so that the processing by the welding or cutting torch 47 does not cause a problem, thereby adjusting the processing speed.
[0041]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.
[0042]
For example, the present invention can be applied not only to a drilling shaft but also to a shaft member generally equipped with a spiral blade. Further, the shaft member may be a tapered shaft equipped with a spiral blade.
[0043]
The automatic processing machine for spiral blades according to the present invention comprises a support mechanism that rotatably supports a shaft member having a spiral blade mounted on the outer periphery, a rotation drive mechanism that rotationally drives the shaft member, and three poles. And a carriage that is movable in the axial direction of the shaft member supported by the support mechanism and a central pole of the carriage, and is capable of contacting a predetermined workpiece on the left and right sides of the spiral blade. A welding or cutting torch, and a guide portion that is disposed so as to be horizontally rotated on the left and right poles of the carriage and can be fixed in contact with the other side surface of the spiral blade. In the processing of the right side surface of the spiral blade, a welding or cutting torch is brought into contact with the processed portion of the right side surface of the spiral blade, and the left guide portion is connected to the left side surface of the spiral blade. By fixing in a contact state, as the shaft member rotates, the left guide portion is pushed by the left side surface of the spiral blade, and the carriage is moved to the left in the axial direction of the shaft member. When processing the left side surface of the spiral blade, a torch for welding or cutting is brought into contact with the processed portion on the left side surface of the spiral blade, and the right guide portion is brought into contact with the right side surface of the spiral blade. As the shaft member rotates, the right guide portion is pushed by the right side surface of the spiral blade, and the carriage is moved to the right in the axial direction of the shaft member. The blade can be easily and reliably processed.
[0044]
Further, in the spiral blade automatic processing machine according to the present invention, the swing member is installed on the carriage so as to swing in a direction orthogonal to the shaft member, and the welding or cutting torch is disposed at one end thereof. A contact portion that is provided on the swinging member and that contacts the outer peripheral surface of the shaft member to determine the height position of the welding or cutting torch; and a balancer disposed at the other end of the swinging member. Therefore, the welding or cutting torch moves at a predetermined height along the outer peripheral surface of the shaft member with which the abutting portion abuts, thereby further processing a predetermined workpiece portion of the spiral blade. It can be simply and reliably followed.
[0045]
In the spiral blade automatic processing machine of the present invention, the support mechanism is provided with an adjusting mechanism for adjusting the rotational speed of the shaft member, so that the traveling speed of the carriage can be adjusted, and the processing speed of the welding or cutting torch is optimized. Can be.
[0046]
Since the spiral blade automatic processing machine of the present invention can automate the welding of the spiral blade, it is suitable for processing the spiral blade of the excavation shaft of a large-sized ground excavator that is long in the axial direction.
[Brief description of the drawings]
FIG. 1 is a front view of a spiral blade automatic processing machine according to an embodiment of the present invention.
FIG. 2 is a right side view of a rotation support mechanism of an automatic processing machine for spiral blades according to an embodiment of the present invention.
FIG. 3 is a front view of a processing unit of an automatic processing machine for spiral blades according to an embodiment of the present invention.
FIG. 4 is a side sectional view of a processing unit of a spiral blade automatic processing machine according to an embodiment of the present invention.
FIG. 5 is a front view showing a state of processing of the root portion of the spiral blade by the spiral blade automatic processing machine according to the embodiment of the present invention.
FIG. 6 is a front view showing a state of processing of the tip portion of the spiral blade by the spiral blade automatic processing machine according to the embodiment of the present invention.
FIG. 7 is a side view of a guide mechanism of a spiral blade automatic processing machine according to an embodiment of the present invention.
FIG. 8 is a plan view of an installation bar of a spiral blade automatic processing machine according to an embodiment of the present invention.
FIG. 9 is a plan view showing a state in which a welding operation of the right side root portion of the spiral blade is started by the spiral blade automatic processing machine according to the embodiment of the present invention.
FIG. 10 is a plan view showing a state of welding work on the right side base portion of the spiral blade by the spiral blade automatic processing machine according to the embodiment of the present invention.
FIG. 11 is a plan view showing a state in which a welding operation of the base portion on the left side surface of the spiral blade is started by the spiral blade automatic processing machine according to the embodiment of the present invention.
FIG. 12 is a plan view showing a state of welding work on the root portion of the left side surface of the spiral blade by the spiral blade automatic processing machine according to the embodiment of the present invention.
13A is a front view showing an excavation shaft, and FIG. 13B is a plan view showing a blade member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Excavation axis 2 Spiral blade 3 Steel pipe 10 Processing unit 11 Processing stand 21 First rail 23 Rotation drive mechanism 25 Rotation support mechanism 27 Chuck part 28 Motor 29 Transmission 41 Second rail 43 Bogie 47 Welding torch 48 Contact part 51 Guide Mechanism 53 Oscillating Member 72 Roller Member 75 Mounting Bar

Claims (4)

A support mechanism for rotatably supporting a shaft member having a spiral blade mounted on the outer periphery;
A rotational drive mechanism for rotationally driving the shaft member;
A carriage with three poles erected and movable in the axial direction of the shaft member supported by the support mechanism;
A welding or cutting torch that is disposed on a central pole of the carriage and is capable of contacting a predetermined workpiece on one of the left and right sides of the spiral blade;
A guide portion that is disposed so as to horizontally rotate on the left and right poles of the carriage, and can be fixed in a state of being in contact with the other side surface of the spiral blade;
At the time of processing the right side surface of the spiral blade, a welding or cutting torch was brought into contact with the processed portion on the right side surface of the spiral blade, and the left guide portion was brought into contact with the left side surface of the spiral blade. By fixing the shaft member in the state, the left guide portion is pushed by the left side surface of the spiral blade as the shaft member rotates, and the carriage is moved to the left side in the axial direction of the shaft member. When processing the left side, the welding or cutting torch is brought into contact with the part to be processed on the left side of the spiral blade, and the right guide is fixed in contact with the right side of the spiral blade. Thus, with the rotation of the shaft member, the right guide portion is pushed by the right side surface of the spiral blade, and the carriage is moved to the right in the axial direction of the shaft member. Automatic machine Le wings. A swinging member installed on a central pole on the carriage so as to swing in a direction perpendicular to the shaft member, and having the welding or cutting torch disposed at one end thereof;
An abutting portion provided on the swinging member, abutting on an outer peripheral surface of the shaft member, and determining a height position of the welding or cutting torch;
The spiral blade automatic processing machine according to claim 1, further comprising a balancer disposed at the other end of the swing member.   The automatic processing machine for a spiral blade according to claim 1 or 2, further comprising an adjustment mechanism for adjusting a rotation speed of the shaft member in the support mechanism.   The spiral blade automatic processing machine according to any one of claims 1 to 3, wherein the shaft member is an excavation shaft.

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