A flange turning device and a turning process

Abstract

The present invention relates to the field of flange processing technology, specifically to a flange turning device and a turning process, the device includes a lathe frame, a support assembly and mounting rods symmetrically distributed on both sides of the support assembly are movably arranged on the frame, the support assembly is composed of a plurality of support blocks connected in sequence, a plurality of support blocks have interconnected mortises at the bottom, tenons corresponding to the mounting rods are slidably arranged in the mortises, and a traction rod is movably arranged between the mounting rod and the corresponding tenon block. When turning the surface of the flange, the invention first fixes the flange flange outwardly on the lathe turntable, and the clamping rod is clamped on the outer edge of the flange, and then manually pushes the plurality of support blocks together to form a support rod, and the support rod supports the flange flange so that the flange can stably rotate with the turntable.

Description

Technical Field

[0001] The present invention relates to the technical field of flange processing, and specifically relates to a flange turning device and a turning process. Background Art

[0002] A flange is a connecting component that connects two pipelines or a pipeline and a device and can be disassembled, and is usually used to connect two steel pipes or pipelines.

[0003] Chinese Patent Publication No. CN118237617A discloses a wind power flange turning device.

[0004] In the prior art including the above patent, when producing large flanges, especially integrally forged flanges, the blank needs to be repeatedly heat-treated and forged, and then a ring rolling machine is used to shape the blank into a flange. Then, a lathe is used to turn the surface of the flange. Most of the existing lathe fixtures are three-jaw chucks or five-jaw chucks. The jaws of the chuck clamp the flange and are rotated by the main shaft so that the cutting tool can perform turning processing. Moreover, in order to facilitate the cutting tool to process the edges and corners of the flange, the jaws are generally not too long. However, large flanges have a large self-weight, especially large flanges with flanges. The center of gravity of this kind of flange is not in the center. Only relying on the short jaws cannot provide a stable clamping force for the flange, and the flange is prone to shaking during rotation, affecting the turning processing of the flange surface. Summary of the Invention

[0005] The purpose of the present invention is to provide a flange turning device and a turning process to solve the above problems.

[0006] To achieve the above purpose, the present invention provides a flange turning device, including the frame of a lathe. A support assembly is movably arranged on the frame, and mounting rods are symmetrically distributed on both sides of the support assembly. The support assembly is composed of a plurality of support blocks connected in sequence. A communicating mortise is opened at the bottom of the plurality of support blocks. A mortise block corresponding to the mounting rod is slidably arranged in the mortise. A traction rod is movably arranged between the mounting rod and the corresponding mortise block. The support assembly is assembled for the following two states:

[0007] The first state: the tops of the two traction rods rise to push the two mortise blocks closer together, and the plurality of support blocks are inserted and combined to form a support rod that abuts against the bottom of the flange flange.

[0008] The second state: the two traction rods pull the two mortise blocks apart, so that the plurality of support blocks are separated and form a traction chain that supports the bottom of the outer edge of the flange.

[0009] Preferably, it further includes a driving rod for driving the two tenon blocks to move synchronously and reversely, and the driving rod is separated from the tenon blocks to switch the support assembly from the first state to the second state.

[0010] Preferably, a movable block for forming a channel adapted to the driving rod by clamping is hinged on the tenon block.

[0011] Preferably, a right-angled triangular support frame for supporting the traction rod is arranged on the mounting rod, and the end of the support frame supports the bottom end of the traction rod near the middle of the frame.

[0012] Preferably, the bottom end of the support frame is hinged to the mounting rod and the top cross bar is locked to the mounting rod, and the support frame is unlocked to enable the movable block to rotate relative to the tenon block.

[0013] Preferably, the mounting rod is lifted to unlock the support frame and the traction chain is attached to the bottom of the outer edge of the flange.

[0014] Preferably, a sliding plate is slidably arranged on the frame, and the clamping jaws on the frame rotate to record the outer diameter of the flange and drive the mounting rod to move upward when the flange is separated from the support assembly.

[0015] Preferably, a plug rod is slidably arranged on the support block, and the driving rod drives the two tenon blocks to approach each other so that the plug rod penetrates through adjacent two support blocks.

[0016] Preferably, a friction block for driving the plug rod to move is movably arranged on the tenon block, and the movable block approaches the tenon block so that the friction block abuts against the side wall of the plug rod.

[0017] A flange turning process, based on the flange turning device in the above solution, further includes the following steps:

[0018] S1. Fix the flange with the flange facing outwards on the lathe turntable, push a plurality of support blocks together to form a support rod, and install the driving rod between the two tenon blocks;

[0019] S2. Rotate the driving rod to stabilize the support rod and make the support rod abut against the bottom of the flange;

[0020] S3. The lathe turns the side wall of the flange with the flange, and the flange is removed after the turning is completed;

[0021] S4. The driving rod is separated, the support blocks are dispersed to form a traction chain, and then the flange is fixed on the lathe turntable with the flange facing inwards, and the lathe turns the other side wall of the flange.

[0022] In the above technical scheme, a flange turning device and turning process provided by the present invention have the following beneficial effects: when turning the surface of the flange, the flange is first fixed on the lathe turntable outward, and the clamping rod is clamped on the outer edge of the flange, and then the multiple support blocks are manually pushed together to form a support rod, the top ends of the two traction rods are raised and push the two tenons together, the tenons move along the internal tenons of the support blocks and further push the multiple support blocks to be tightly connected, and the plane of the convex part of the support block abuts against the adjacent support blocks, and the rotation of the two adjacent support blocks is limited by the abutment of the planes, thereby ensuring the compressive strength of the support rod composed of the multiple support blocks, and the top end of the traction rod pushes the support rod to move upward as a whole, and the support rod gradually contacts the flange of the flange to provide supporting force for the flange, and the flange contacts a pair of balls on the central support block, which can facilitate the flange to rotate with the turntable. At this time, the tool direction, the position of the slide bar and the position of the movable seat are manually adjusted. The inner wall of the flange, the outer wall of the flange, the side wall of the flange and the side wall of the flange are turned in turn. The shorter clamping rod will not hinder the tool from turning the side of the flange. After the above turning work is completed, the flange is lifted and turned over by the crane. At this time, the two traction rods pull the two tenons away, and the multiple support blocks move away from each other. The tenon rod moves along the waist groove, and the support blocks rotate with each other. Under the action of gravity, the multiple support blocks naturally droop and become traction chains. The support assembly switches from the first state to the second state, and then the flange is fixed on the turntable in the way that the flange fits the turntable. The clamping rod rests on the inner edge of the flange, and the mounting rod moves with the traction rod and the traction chain. The traction chain fits the outer edge of the flange. The ball bearings on the multiple support blocks facilitate the rotation of the flange relative to the traction chain, and the flange rotates with the turntable. At this time, the tool direction, the position of the slide rod and the position of the movable seat are manually adjusted, and the outer wall of the flange and the other side wall are turned in turn. At this point, the turning process of the outer wall of the flange is completed, and the flange can be removed from the lathe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a slide bar provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the internal structure of a rack provided by an embodiment of the present invention;

[0027] Figure 4Schematic structural diagram of the rack provided by the embodiment of the present invention;

[0028] Figure 5 is Figure 4 Enlarged view at position A in

[0029] Figure 6 Schematic internal structure diagram of the support frame provided by the embodiment of the present invention;

[0030] Figure 7 is Figure 6 Enlarged view at position B in

[0031] Figure 8 is Figure 6 Enlarged view at position C in

[0032] Figure 9 is Figure 6 Enlarged view at position D in

[0033] Figure 10 is Figure 9 Enlarged view at position E in

[0034] Figure 11 Schematic internal structure diagram of the connecting block provided by the embodiment of the present invention;

[0035] Figure 12 Schematic structural diagram of the traction chain provided by the embodiment of the present invention;

[0036] Figure 13 Schematic structural diagram of the support block provided by the embodiment of the present invention.

[0037] Explanation of reference numerals:

[0038] 1. Frame; 11. Support assembly; 111. Support block; 112. End block; 113. Convex part; 114. Concave part; 115. Tenon rod; 116. Waist-shaped groove; 117. Insert rod; 118. Support rod; 119. Traction chain; 12. Mounting rod; 121. Support frame; 122. Traction rod; 123. Lock rod; 124. Slide block; 125. Tenon block; 126. Connecting block; 127. Movable block; 128. Lock block; 129. Friction block; 131. First magnetic ring; 132. Second magnetic ring; 133. Third magnetic ring; 134. Fourth magnetic ring; 135. First cable; 136. Second cable; 137. Third cable; 138. Fourth cable; 14. Slide plate; 141. Liquid storage cavity; 142. Rack; 143. First gear; 144. Second gear; 145. Stop block; 146. Driving rod; 147. Ball; 2. Movable seat; 21. Slide rod; 22. Turntable; 23. Clamping rod. Detailed implementation manners

[0039] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Embodiment 1

[0040] As Figures 1-13 shown, a flange turning device includes a frame 1 of a lathe. A support assembly 11 is movably arranged on the frame 1, and mounting rods 12 symmetrically distributed on both sides of the support assembly 11. The support assembly 11 is composed of a plurality of support blocks 111 connected in sequence. Mortise grooves communicating with each other are formed at the bottoms of the plurality of support blocks 111. Mortise blocks 125 corresponding to the mounting rods 12 are slidably arranged in the mortise grooves. A traction rod 122 is movably arranged between the mounting rod 12 and the corresponding mortise block 125. The support assembly 11 is assembled for the following two states:

[0041] In the first state, the tops of the two traction rods 122 are raised to push the two mortise blocks 125 closer together, and the plurality of support blocks 111 are inserted and combined to form a support rod 118 that abuts against the bottom of the flange flange.

[0042] In the second state, the two traction rods 122 pull the two mortise blocks 125 apart, so that the plurality of support blocks 111 are separated and form a traction chain 119 that supports the bottom of the outer edge of the flange.

[0043] Specifically, convex portions 113 and concave portions 114 adapted to each other are respectively arranged at both ends of the support block 111. A cylindrical mortise rod 115 is arranged in the concave portion 114. A waist-shaped groove 116 adapted to the mortise rod 115 is formed on the convex portion 113. Ball bearings 147 are movably arranged on the support blocks 111, and a pair of ball bearings 147 are arranged on the support block 111 located in the center. The support assembly 11 further includes end blocks 112 connected to the two outermost support blocks 111 and used to prevent the mortise blocks 125 from separating from the support assembly 11.

[0044] Furthermore, a movable seat 2 is slidably arranged on the frame 1. A slide rod 21 for mounting a tool is slidably arranged on the movable seat 2. A turntable 22 is arranged on the main shaft of the lathe, and a plurality of clamping rods 23 are arranged on the turntable 22.

[0045] In the above technical solution, when turning the surface of the flange, the flange is first fixed on the lathe turntable 22 with the flange facing outward, and the clamping rod 23 is clamped on the outer edge of the flange, and then the multiple support blocks 111 are manually pushed together to form a support rod 118, and the middle of the support rod 118 is located on the central axis of the frame 1, the top ends of the two traction rods 122 are raised and push the two tenons 125 together, the tenons 125 move along the internal tenons of the support blocks 111 and further push the multiple support blocks 111 to be closely connected, and the plane of the convex portion 113 of the support block 111 abuts against On the adjacent support blocks 111, the rotation of the two adjacent support blocks 111 is limited by the abutment of the plane, thereby ensuring the compressive strength of the support rod 118 composed of the multiple support blocks 111, and the top end of the traction rod 122 pushes the support rod 118 to move upward as a whole, and the support rod 118 gradually contacts the flange of the flange to provide support force for the flange, and the flange contacts a pair of balls 147 on the central support block 111, which can facilitate the flange to rotate with the turntable 22. At this time, the tool direction, the position of the slide bar 21 and the position of the movable seat 2 are manually adjusted, and the turning is sequentially performed. The inner wall of the flange, the outer wall of the flange, the side wall of the flange and the side wall of the flange are cut, and the shorter clamping rod 23 will not hinder the tool from turning the side of the flange; after the above turning work is completed, the flange is lifted and turned over by the crane, at this time, the two traction rods 122 pull the two tenons 125 away, and the multiple support blocks 111 are away from each other, the tenon rods 115 move along the waist groove 116, and the support blocks 111 rotate with each other. Under the action of gravity, the multiple support blocks 111 naturally droop and become the traction chain 119, and the support assembly 11 is switched from the first state to the second state, and then the flange is turned. The flange is fixed to the turntable 22 in such a way that it fits the turntable 22, the clamping rod 23 rests on the inner edge of the flange, the mounting rod 12 moves with the traction rod 122 and the traction chain 119, the traction chain 119 fits on the outer edge of the flange, and the ball bearings 147 on the multiple support blocks 111 facilitate the rotation of the flange relative to the traction chain 119. The flange rotates with the turntable 22. At this time, the tool direction, the position of the slide rod 21 and the position of the movable seat 2 are manually adjusted, and the outer wall of the flange and the other side wall are turned in turn. At this point, the turning of the outer wall of the flange is completed, and the flange can be removed from the lathe.

[0046] As a further embodiment provided by the present invention, it also includes a driving rod 146 for driving the two tenons 125 to move synchronously in opposite directions. The driving rod 146 is separated from the tenons 125 to switch the support assembly 11 from the first state to the second state.

[0047] Specifically, when the support assembly 11 is in the first state, the drive rod 146 is coupled to the two tenon blocks 125. The drive rod 146 rotates to drive the two tenon blocks 125 to approach each other. The tenon blocks 125 push the plurality of support blocks 111 to fit more closely. Moreover, the tenon blocks 125 pull the top end of the traction rod 122, and the traction rod 122 pushes the support rod 118 composed of the plurality of support blocks 111 to move upward until the support rod 118 contacts the flange of the flange plate and provides a supporting force to the flange of the flange plate, enabling the flange plate to rotate stably with the turntable 22. When the drive rod 146 is separated from the tenon block 125, the two tenon blocks 125 can move along the tenon grooves on the support blocks 111, gradually move towards both ends of the support assembly 11, and the plurality of support blocks 111 are separated. The support blocks 111 can rotate and fall under the action of gravity, and the support assembly 11 switches from the first state to the second state.

[0048] As another embodiment further provided by the present invention, a movable block 127 for forming a channel adapted to the drive rod 146 by clamping is hinged on the tenon block 125.

[0049] Specifically, threads are provided at both ends of the drive rod 146, and the spiral directions of the two sections of screw rods are opposite. A connecting block 126 is provided at the bottom of the tenon block 125. The movable block 127 is hinged on the connecting block 126. Semi-circular grooves are formed on both the movable block 127 and the connecting block 126. The two semi-circular grooves in cross-section combine to form a channel adapted to the drive rod 146. The channels on the two tenon blocks 125 are respectively adapted to the two threads at both ends of the drive rod 146. A slope for guiding the movement of the drive rod 146 is provided on the movable block 127.

[0050] Further, when the support assembly 11 is in the first state, the movable block 127 is tightly connected to the connecting block 126, and the drive rod 146 passes through the channels on the two tenon blocks 125. By rotating the drive rod 146, the drive rod 146 drives the two tenon blocks 125 to approach each other, and the drive rod 146 can also provide a supporting force to the support rod 118, thereby supporting the flange of the flange plate. When the support assembly 11 switches from the first state to the second state, the movable block 127 rotates relative to the connecting block 126, the channels on the tenon blocks 125 are opened, the drive rod 146 separates from the connecting block 126 and drops under the action of gravity, the two tenon blocks 125 are unlocked, the support assembly 11 falls downward under the action of gravity, and the support blocks 111 are separated and form a traction chain 119.

[0051] As yet another embodiment further provided by the present invention, a right-angled triangle support frame 121 for supporting the traction rod 122 is provided on the mounting rod 12, and the end of the support frame 121 supports the bottom end of the traction rod 122 near the middle of the frame 1.

[0052] Specifically, the top end of the towing rod 122 is rotatably installed on the connecting block 126, and the bottom end is rotatably installed on the support frame 121. Moreover, the top end of the towing rod 122 inclines towards the outside of the frame 1, and a stop block 145 is arranged at the top of the mounting rod 12.

[0053] Furthermore, when the support assembly 11 is in the first state, the driving rod 146 rotates to drive the two tenon blocks 125 to approach each other. The tenon blocks 125 tow the top end of the towing rod 122 to move towards the middle of the frame 1, and the top end of the towing rod 122 rises. Then, it pushes up the support rod 118 so that the support rod 118 can support the flange of the flange plate. Moreover, the right-angled triangular support frame 121 has better stability and can conduct the pressure received by the towing rod 122 to the mounting rod 12. Also, the stop block 145 at the top of the mounting rod 12 will block its downward movement relative to the frame 1 and transfer the pressure to the frame 1. Thus, it is convenient for the towing rod 122 to cooperate with the driving rod 146 and the support rod 118 to support the flange of the flange plate.

[0054] As another embodiment further provided by the present invention, the bottom end of the support frame 121 is hinged to the mounting rod 12, and the top cross bar is locked to the mounting rod 12. The support frame 121 is unlocked to enable the movable block 127 to rotate relative to the tenon block 125.

[0055] Specifically, a locking block 128 for locking the movable block 127 is arranged on the connecting block 126. A torsion spring is arranged between the movable block 127 and the connecting block 126. A slope is arranged on the side wall of the locking block 128 close to the connecting block 126, and a spring is arranged between the locking block 128 and the connecting block 126.

[0056] Furthermore, when the flange is fixed on the turntable 22 and the clamping rod 23 is clamped on the outer edge of the flange, the staff manually abuts the multiple support blocks 111 together to form a support rod 118, and places the driving rod 146 in the groove on the connecting block 126 on the two tenons 125, and then manually pushes the movable block 127, and the bottom end of the movable block 127 moves along the slope of the locking block 128 and pushes the locking block 128 to retract into the connecting block 126 until the movable block 127 is tightly fitted with the connecting block 126, and the groove on the movable block 127 and the groove on the connecting block 126 are combined to form a channel adapted to the driving rod 146, and at this time, the locking block 128 is facing the locking groove on the movable block 127, and the movable block 127 is locked. 27 is inserted into the movable block 127 under the action of the spring, and the movable block 127 is locked on the connecting block 126. The driving rod 146 is coupled with the tenon block 125, and the tenon block 125 can be driven to move; when the support assembly 11 is switched from the first state to the second state, the support frame 121 is unlocked, the support frame 121 can rotate relative to the mounting rod 12, and the locking block 128 is retracted into the connecting block 126, the connecting block 126 is unlocked and relative to the connecting block 126 under the action of the torsion spring. At this time, the groove on the connecting block 126 is in an open state, the driving rod 146 is separated from the connecting block 126 under the action of gravity, and the tenon block 125 is unlocked, which facilitates the support assembly 11 to switch from the first state to the second state.

[0057] As another embodiment further provided by the present invention, the mounting rod 12 is moved upward to unlock the support frame 121 and the traction chain 119 is attached to the bottom of the outer edge of the flange.

[0058] Specifically, a locking rod 123 for locking the support frame 121 is slidably provided on the mounting rod 12, a slope for pushing the locking rod 123 is provided on the frame 1, a locking groove adapted to the locking rod 123 is provided on the support frame 121, a slider 124 facing the locking rod 123 is slidably provided in the locking groove, a first magnetic ring 131 is slidably provided at the connection between the support frame 121 and the traction rod 122, a first cable 135 is provided between the first magnetic ring 131 and the slider 124, springs are provided between the first magnetic ring 131 and the support frame 121, and between the slider 124 and the support frame 121, and the connection between the traction rod 122 and the support frame 121 slides. A second magnetic ring 132 is provided which is attracted to the first magnetic ring 131; a third magnetic ring 133 is slidably provided at the connection between the traction rod 122 and the connecting block 126; a second pull cable 136 is provided between the second magnetic ring 132 and the third magnetic ring 133; springs are provided between the second magnetic ring 132 and the traction rod 122 and between the third magnetic ring 133 and the traction rod 122; a fourth magnetic ring 134 which is attracted to the third magnetic ring 133 is slidably provided at the connection between the connecting block 126 and the traction rod 122; a third pull cable 137 is provided between the fourth magnetic ring 134 and the locking block 128; and a spring is provided between the fourth magnetic ring 134 and the connecting block 126.

[0059] Further, when the mounting rod 12 is inside the frame 1, the locking rod 123 is pushed by the frame 1 and inserted into the support frame 121 to lock the support frame 121 on the mounting rod 12; during the upward movement of the mounting rod 12, the locking rod 123 loses the obstruction, and the slider 124 pushes the locking rod 123 under the action of the spring. The locking rod 123 leaves the support frame 121, and the support frame 121 is unlocked. Moreover, the slider 124 drives the first magnetic ring 131 to slide through the first cable 135. The first magnetic ring 131 drives the second magnetic ring 132 attracted to it to slide relative to the traction rod 122. The second magnetic ring 132 drives the third magnetic ring 133 to slide relative to the traction rod 122 through the second cable 136. The third magnetic ring 133 drives the fourth magnetic ring 134 attracted to it to slide relative to the connecting block 126. Moreover, the fourth magnetic ring 134 drives the locking block 128 to move through the third cable 137. The locking block 128 retracts into the connecting block 126, and the movable block 127 is unlocked. The driving rod 146 can be separated from the connecting block 126. Moreover, the support frame 121 rotates downward under the action of gravity and drives the tenon block 125 to move towards both ends of the support assembly 11 through the traction rod 122. Moreover, multiple support blocks 111 are separated to form a traction chain 119. The mounting rod 12 continues to move upward, so that the traction chain 119 contacts the outer edge of the flange and provides a supporting force to the flange.

[0060] As another embodiment further provided by the present invention, a sliding plate 14 is slidably arranged on the frame 1. The clamping jaws on the frame 1 rotate to record the outer diameter of the flange and drive the mounting rod 12 to move upward when the flange is separated from the support assembly 11.

[0061] Specifically, a first gear 143 for driving the mounting rod 12 to move is rotatably arranged inside the frame 1. Teeth meshing with the first gear 143 are arranged on the mounting rod 12. A second gear 144 is arranged on the first gear 143. The diameter of the second gear 144 is smaller than that of the first gear 143. A rack 142 meshing with the second gear 144 is slidably arranged on the frame 1. A liquid storage cavity 141 for storing hydraulic oil is arranged inside the frame 1. An airbag is arranged in the liquid storage cavity 141. Moreover, two vertical flow channels are arranged on the liquid storage cavity 141. The rack 142 extends into one of the flow channels (equivalent to a piston), and the sliding plate 14 is located in the other flow channel (equivalent to a piston). A ratchet mechanism for preventing the sliding plate 14 from moving upward is arranged on the frame 1 (this is prior art and will not be elaborated). A ratchet mechanism for preventing the mounting rod 12 from moving downward is arranged on the frame 1 (this is prior art and will not be elaborated). Ramps are symmetrically arranged at the top of the sliding plate 14.

[0062] Further, when the flange is fixed on the turntable 22 and the clamping rod 23 clamps the outer edge of the flange, the rotation of the turntable 22 causes the clamping rod 23 to contact the slide plate 14 and push the slide plate 14 downward along the slope of the slide plate 14. The position of the slide plate 14 records the diameter of the flange. The slide plate 14 squeezes the hydraulic oil in the liquid storage cavity 141 and transmits the pressure to the airbag. The airbag contracts. At this time, the mounting rod 12 cannot move upward under the pressure of the support rod 118. After the turning work of the flange in this state is completed, the traveling crane hoists the flange. The mounting rod 12 loses the downward pressure, and the airbag expands again to push the rack 142 upward. The rack 142 drives the first gear 143 to rotate through the second gear 144 engaged therewith. The first gear 143 pushes the mounting rod 12 upward through the teeth on the mounting rod 12, and the support assembly 11 is switched from the first state to the second state. The upward movement of the mounting rod 12 drives the traction chain 119 upward, facilitating the contact between the traction chain 119 and the outer edge of the flange and providing a support force for the flange. Moreover, the pawl on the frame 1 can provide a support force for the mounting rod 12 to facilitate it to receive the pressure transmitted from the traction chain 119; after the work is completed, the two groups of pawls are respectively driven to separate from the mounting rod 12 and the slide plate 14, so that the mounting rod 12 and the slide plate 14 are reset (equivalent to a ratchet wrench, which is prior art and will not be elaborated).

[0063] As another embodiment further provided by the present invention, a plug rod 117 is slidably arranged on the support block 111, and the driving rod 146 drives the two tenon blocks 125 to approach each other so that the plug rod 117 penetrates through two adjacent support blocks 111.

[0064] Specifically, a spring is arranged between the plug rod 117 and the corresponding support block 111.

[0065] Further, after the flange is fixed on the turntable 22 and the clamping rod 23 clamps the outer edge of the flange, manually push a plurality of support blocks 111 to approach each other to form a support rod 118. The middle part of the support rod 118 is located on the central axis of the frame 1 and is close to the bottom of the flange flange. At this time, drive the two tenon blocks 125 to approach each other, drive the plug rod 117 to move, insert the plug rod 117 into the adjacent support block 111, and push the plug rod 117 in the adjacent support block 111 to move further towards the middle support block 111, connecting the support blocks 111 between the two tenon blocks 125 together. Moreover, the two tenon blocks 125 only need to move a short distance to lock the support blocks 111 between them together.

[0066] As another embodiment further provided by the present invention, a friction block 129 for driving the plug rod 117 to move is movably arranged on the tenon block 125, and the movable block 127 approaches the tenon block 125 so that the friction block 129 abuts against the side wall of the plug rod 117.

[0067] Specifically, the friction block 129 is a rubber block. A spring is arranged between the friction block 129 and the tenon block 125, and a fourth cable 138 is arranged between the friction block 129 and the lock block 128.

[0068] Further, when the movable block 127 is in close contact with the connecting block 126 and the lock block 128 is inserted into the movable block 127, the fourth cable 138 between the lock block 128 and the friction block 129 is relaxed. Under the action of the spring, the friction block 129 moves outward to the outside of the tenon block 125 and abuts against the side wall of the insertion rod 117. Then the two tenon blocks 125 move closer together, and the friction block 129 moves with the tenon block 125 and pushes the insertion rod 117 towards the middle support block 111; when the support frame 121 is unlocked, the lock block 128 retracts into the connecting block 126. The lock block 128 drives the friction block 129 to retract into the tenon block 125 through the fourth cable 138. The friction block 129 is separated from the insertion rod 117. The insertion rod 117 retracts into the corresponding support block 111 under the action of the spring, unlocking multiple support blocks 111. The support blocks 111 can be separated and then rotated, and the support assembly 11 is switched from the first state to the second state. Embodiment 2

[0069] A flange turning process, based on the flange turning device in Embodiment 1, further includes the following steps:

[0070] S1. Fix the flange with the flange outward on the lathe turntable 22, and the clamping rod 23 clamps on the outer edge of the flange. Push multiple support blocks 111 closer together to form a support rod 118 and install the driving rod 146 between the two tenon blocks 125;

[0071] S2. The driving rod 146 rotates to drive the two tenon blocks 125 closer together. The top of the traction rod 122 is pulled by the tenon block 125 and moves towards the middle of the frame 1. The top of the traction rod 122 rises, and then pushes the support rod 118 to rise so that the support rod 118 supports the flange flange;

[0072] S3. Manually adjust the orientation of the tool, the position of the slide bar 21, and the position of the movable seat 2, and turn the inner wall of the flange, the outer wall of the flange, the side wall of the flange, and the side wall of the flange in sequence. After turning is completed, remove the flange;

[0073] S4. Separate the driving rod 146. The two traction rods 122 pull the two tenon blocks 125 away from each other. The multiple support blocks 111 move away from each other. The tenon rod 115 moves along the waist-shaped groove 116. The support blocks 111 rotate relative to each other. The multiple support blocks 111 naturally droop under the action of gravity to form a traction chain 119. Then fix the flange with the flange inward on the lathe turntable 22. The installation rod 12 moves upward to drive the traction chain 119 to move upward. The traction chain 119 contacts the outer edge of the flange and provides a supporting force for the flange. The lathe turns the other side wall of the flange.

[0074] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flange turning device, characterized in that, Including the frame (1) of a lathe, a support assembly (11) is movably arranged on the frame (1), and mounting rods (12) symmetrically distributed on both sides of the support assembly (11). The support assembly (11) is composed of a plurality of support blocks (111) connected in sequence. Mortise grooves communicating with each other are formed at the bottoms of the plurality of support blocks (111). A mortise block (125) corresponding to the mounting rod (12) is slidably arranged in the mortise groove. A traction rod (122) is movably arranged between the mounting rod (12) and the corresponding mortise block (125). The support assembly (11) is assembled for the following two states: The first state, the tops of the two traction rods (122) rise to push the two mortise blocks (125) closer, and the plurality of support blocks (111) are inserted and combined to form a support rod (118) abutting against the bottom of the flange flange; The second state, the two traction rods (122) pull the two mortise blocks (125) apart, so that the plurality of support blocks (111) are separated and form a traction chain (119) supporting the bottom of the outer edge of the flange.

2. The turning device for a flange according to claim 1, wherein, It also includes a drive rod (146) for driving the two mortise blocks (125) to move synchronously in the opposite direction. The drive rod (146) is separated from the mortise block (125) so that the support assembly (11) is switched from the first state to the second state.

3. A flange turning device according to claim 2, characterized in that, A movable block (127) for clamping and forming a channel adapted to the drive rod (146) is hinged on the mortise block (125).

4. The turning device for a flange according to claim 3, characterized in that, A right-angled triangle support frame (121) for supporting the traction rod (122) is arranged on the mounting rod (12). The end of the support frame (121) supports the bottom end of the traction rod (122) near the middle of the frame (1).

5. A flange turning device according to claim 4, characterized in that, The bottom end of the support frame (121) is hinged on the mounting rod (12), and the top cross bar is locked on the mounting rod (12). The support frame (121) is unlocked to enable the movable block (127) to rotate relative to the mortise block (125).

6. The turning device for a flange according to claim 5, characterized in that, The mounting rod (12) moves upward to unlock the support frame (121) and the traction chain (119) fits against the bottom of the outer edge of the flange.

7. A flange turning device according to claim 1, characterized in that, A sliding plate (14) is slidably arranged on the frame (1). The clamping jaws on the frame (1) rotate to record the outer diameter of the flange, and drive the mounting rod (12) to move upward when the flange is separated from the support assembly (11).

8. The turning device for a flange according to claim 3, characterized in that A plug rod (117) is slidably arranged on the support block (111). The drive rod (146) drives the two mortise blocks (125) closer so that the plug rod (117) penetrates through two adjacent support blocks (111).

9. A flange turning device according to claim 8, characterized in that, A friction block (129) for driving the plug rod (117) to move is movably arranged on the mortise block (125). The movable block (127) and the mortise block (125) move closer so that the friction block (129) abuts against the side wall of the plug rod (117).

10. A flange turning process, based on the flange turning device according to any one of claims 1-9, characterized in that, It also includes the following steps: S1. Fix the flange with the flange facing outwards on the lathe turntable (22), push multiple support blocks (111) together to form a support rod (118), and install the drive rod (146) between two tenon blocks (125); S2. Rotate the drive rod (146) to stabilize the support rod (118) and make the support rod (118) abut against the bottom of the flange; S3. The lathe turns the side wall of the flange on the side with the flange, and the flange is removed after the turning is completed; S4. The drive rod (146) is separated, the support blocks (111) are dispersed to form a traction chain (119), then the flange is fixed on the lathe turntable (22) with the flange facing inwards, and the lathe turns the other side wall of the flange.

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