Raw material cutting equipment and cutting method for flange plate production

Abstract

The invention relates to the field of numerical control machine tools, in particular to raw material cutting equipment for flange plate production and a cutting method, which are used for machining the surface of a flange plate and comprise a rack and a cutter assembly for machining the surface of the flange plate. A thrust bearing for supporting the flange plate, a plurality of clamping assemblies which move in the radial direction of an inner ring of the thrust bearing and a power assembly which is in surface contact with the outer circumferential surface of the flange plate are mounted on the rack, each clamping assembly comprises a pin roller which is in linear contact with the inner circumferential surface of the flange plate, and the pin rollers can only rotate around the central axis of the pin rollers when being in contact with the inner circumferential surface of the flange plate; the power assembly and the thrust bearing are used for directly driving the flange plate to rotate, so that the flange plate and the clamping component move relatively, the clamping component only plays a role in centering and limiting instead of a role in driving the flange plate to rotate by transmitting force, and damage of the clamping component to the surface of the flange plate is reduced.

Description

Technical Field

[0001] The invention relates to the field of numerically controlled machine tools, and in particular to a raw material cutting device and a cutting method for flange production. Background Art

[0002] Flange, also called flange or flange, is a part that connects pipes to pipes and valves, and is connected to the pipe ends. Large flanges are mainly used in large-diameter pipeline projects and are widely used in the machinery industry, chemical industry, wind power industry, and sewage treatment industry.

[0003] The existing equipment for processing large flanges generally includes DVT500 CNC vertical lathes and CX60 horizontal CNC lathes, both of which use the cylindrical clamping parts on the turntable to clamp the inner or outer peripheral surface of the large flange in line contact, and then drive the turntable to drive the clamping parts, and drive the large flange to rotate through the friction force when the clamping parts are clamped, so as to cooperate with the tool to process the surface of the large flange. Due to the large weight of the large flange, it is usually necessary to apply a large clamping force to the large flange to generate enough friction to drive the large flange to rotate, which is easy to cause local damage to the clamped surface of the large flange;

[0004] The invention of announcement number CN118527944B uses a clamping adjustment mechanism on a turntable to clamp the flange, and then drives the rotary tool assembly to rotate on the flange to perform surface processing. Compared with the above two machine tools, it is only necessary to ensure that the large flange does not move when the tool processes the surface of the large flange, and the clamping force requirement for the large flange is reduced, which reduces the surface damage caused. However, there are problems such as difficulty in tool routing and difficulty in adding cutting fluid at the processing site.

[0005] The present invention provides another different technical solution, which reduces the surface damage caused by clamping and ensures that the tool can process the surface of the large flange without rotating.

[0006] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0007] The purpose of the present invention is to design a device that can process the surface of a large flange without a rotating tool while reducing surface damage caused by clamping, so as to solve the above-mentioned shortcomings in the technology.

[0008] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a raw material cutting device for flange production, used for processing the surface of the flange, comprising a frame and a tool assembly for processing the surface of the flange, the frame is equipped with a thrust bearing supporting the flange, a plurality of clamping assemblies moving radially on the inner ring of the thrust bearing, and a power assembly in surface contact with the outer peripheral surface of the flange, the clamping assembly comprises a roller in line contact with the inner peripheral surface of the flange, and the roller can only rotate around its own central axis when in contact with the inner peripheral surface of the flange;

[0009] The turntable in the prior art is replaced by a thrust bearing, the transmission method of using the turntable and the clamping assembly to drive the flange using the clamping force is abandoned, and the friction force generated when the power assembly contacts the flange surface is used to directly drive the flange to rotate.

[0010] Preferably, the clamping assembly also includes a limit rod rotatably mounted at the bottom of the roller, and a first hydraulic cylinder matching the limit rod, the limit rod passes through the frame and is slidably connected to the frame, the first hydraulic cylinder is fixedly connected to the frame, and the output end of the first hydraulic cylinder is fixedly connected to the end of the limit rod.

[0011] Preferably, the plurality of rollers are distributed in a ring array, wherein one of the rollers, the center axis of the flange and the power assembly are in the same vertical plane.

[0012] Preferably, the inner diameter of the thrust bearing is larger than the inner diameter of the flange, and when the outer peripheral surface of the roller contacts the inner peripheral surface of the flange, it does not contact the inner peripheral surface of the thrust bearing.

[0013] Preferably, the power assembly includes a mounting frame, a driven wheel and a driving wheel rotatably mounted on the mounting frame, a motor fixedly mounted on the mounting frame, and a transmission belt rollingly connected outside the driven wheel and the driving wheel, the transmission belt is in contact with the outer peripheral surface of the flange, and the output end of the motor is fixedly connected to the driving wheel.

[0014] Preferably, the mounting frame includes a first frame rotatably connected to the driven wheel, and a second frame rotatably connected to the driving wheel, the motor is fixedly mounted on the top of the second frame, a second hydraulic cylinder is fixedly mounted on the top of the first frame, and the top of the output end of the second hydraulic cylinder is fixedly connected to the second frame.

[0015] Preferably, the power assembly also includes a transmission rod fixedly connected to the bottom of the first frame, and a third hydraulic cylinder fixedly mounted on the frame, the output shaft of the third hydraulic cylinder passes through the frame and is slidably connected to the frame, and the output end of the third hydraulic cylinder is fixedly connected to the transmission rod.

[0016] Preferably, an XY-axis slide module is fixedly mounted on the frame, an output end of the XY-axis slide module is fixedly connected to the tool assembly, and symmetrically distributed through grooves are provided on the top of the thrust bearing.

[0017] Preferably, the power assembly also includes a first wedge block slidably connected to the top of the transmission rod, an extrusion wheel rotatably installed in the first wedge block, a second wedge block matching one side of the first wedge block, a transmission plate fixedly installed on one side of the second wedge block, a guide plate that passes through and slidably connected to the transmission plate, a spring fixedly installed between the first wedge block and the first frame, and a first rod and a second rod rotatably installed on opposite sides of the guide plate and the driven wheel, the first rod and the second rod ends are rotatably connected, and the guide plate is fixedly connected to the top of the second hydraulic cylinder.

[0018] In a second aspect, the present invention further provides a cutting method for operating the raw material cutting device for flange production to perform cutting, the method comprising the steps of:

[0019] S1: Move the flange to the thrust bearing and place it so that multiple rollers are located in the inner ring of the flange at the same time;

[0020] S2: The output shafts of the multiple first hydraulic cylinders are shortened synchronously, and the rollers are driven away from each other through the limit rods until the multiple rollers are in contact with the inner circumference of the flange at the same time, so that the flange is aligned;

[0021] S3: The output shaft of the third hydraulic cylinder extends to drive the driven wheel to drive the transmission belt to fit the outer peripheral surface of the flange, while the output shaft of the second hydraulic cylinder shortens to ensure that the transmission belt remains taut;

[0022] S4: Start the motor to drive the transmission belt, and use the friction between the transmission belt and the flange to drive the flange to rotate, so that the flange reaches a predetermined speed;

[0023] S5: The XY-axis slide module operates the tool assembly to process the top surface of the flange, using different tools to achieve scraping, cutting, pinning and other processing.

[0024] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0025] 1. The present invention is different from the prior art in that the flange is clamped by a clamping component, the clamping component and the flange move synchronously, and the flange is driven to rotate by driving the clamping component to cooperate with the tool for processing; instead, the power assembly and the thrust bearing are used to directly drive the flange to rotate, so that the flange and the clamping component move relative to each other. The clamping component only plays the role of centering and limiting, rather than transmitting force to drive the flange to rotate, thereby reducing the damage of the clamping component to the flange surface;

[0026] 2. The present invention directly contacts the flange through the transmission belt in the power assembly, and generates friction through surface contact to drive the flange. Compared with the local stress contact in the prior art, the local pressure is reduced, thereby reducing the damage to the flange surface;

[0027] 3. At the same time, when the transmission belt of the present invention drives the flange to rotate, it also drives the extrusion wheel to move, so that the transmission belt in contact with the flange is pressurized by the extrusion wheel, exerting pressure on the flange, thereby increasing the friction of the contact part and making it easier to drive the flange to rotate;

[0028] 4. The present invention can adjust the length of the output shaft of the second hydraulic cylinder according to the outer diameter of the flange, so that the contact length between the transmission belt and the flange changes to adapt to flanges of different outer diameters;

[0029] 5. The present invention can also set the transmission components to be symmetrically distributed in two according to the mass of the flange, so as to drive the flange to rotate more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the connection between the power assembly and the frame of the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of the frame of the present invention;

[0034] Figure 4 It is a cross-sectional view of the frame of the present invention;

[0035] Figure 5 It is a schematic diagram of the disassembly of the frame and the power assembly of the present invention;

[0036] Figure 6 It is a schematic diagram of the connection between the transmission belt and the mounting frame of the present invention;

[0037] Figure 7 It is a three-dimensional diagram of the power assembly of the present invention;

[0038] Figure 8 It is a schematic diagram of the local structure of the power component of the present invention.

[0039] Description of reference numerals:

[0040] 1. Frame; 2. Tool assembly; 3. Thrust bearing; 4. Clamping assembly; 4a. Roller; 4b. Limit rod; 4c. First hydraulic cylinder; 5. Power assembly; 5a. Mounting frame; 5a1. First frame; 5a2. Second frame; 5b. Driven wheel; 5c. Driving wheel; 5d. Motor; 5e. Transmission belt; 5f. Second hydraulic cylinder; 5g. Transmission rod; 5h. Third hydraulic cylinder; 5i. First wedge block; 5j. Extrusion wheel; 5k. Second wedge block; 5l. Transmission plate; 5m. Guide plate; 5n. Spring; 5o. First rod; 5p. Second rod; 6. XY-axis slide module; 7. Through groove. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] The present invention provides Figure 1-8 A raw material cutting device for flange production is shown, such as Figure 1 As shown, it includes a frame 1, on which an XY-axis slide module 6 is fixedly installed, and a tool assembly 2 is fixedly installed at the output end of the XY-axis slide module 6. The tool assembly 2 has different tools, which can perform different processing on the flange surface, such as scraping, cutting, pin pulling, etc.; Figure 2 As shown, a thrust bearing 3 is fixedly mounted on the frame 1, and a through groove 7 is provided on the top surface of the thrust bearing 3. When the fork on the forklift carries the flange, the fork only needs to be placed into the through groove 7 to place the flange on the thrust bearing 3. To remove the processed flange, the reverse operation is only required; Figure 3 , Figure 4 As shown, a plurality of clamping assemblies 4 distributed in a linear array are installed in the frame 1, and the clamping assembly 4 includes a first hydraulic cylinder 4c fixedly installed on the frame 1, a limit rod 4b fixedly installed at the end of the output shaft of the first hydraulic cylinder 4c, and a roller 4a rotatably connected to the top of the limit rod 4b. The plurality of rollers 4a are located together in the inner ring of the flange. When all the rollers 4a are in contact with the inner circumference of the flange, the flange is in a centered state. The technical solution replaces the turntable in the prior art with the thrust bearing 3, and then the clamping assembly 4 only plays a limiting role, instead of applying a radial clamping force to the flange as in the prior art to fix the flange on the thrust bearing 3;

[0044] like Figure 2-Figure 6 As shown, a power assembly 5 is also installed on the frame 1, and the power assembly 5 includes a third hydraulic cylinder 5h fixedly installed on the frame 1, a transmission rod 5g is fixedly installed on the output end of the third hydraulic cylinder 5h, a mounting frame 5a is fixedly installed on the top of the transmission rod 5g, four driven wheels 5b and a driving wheel 5c, and a motor 5d are fixedly installed on the mounting frame 5a, the output shaft end of the motor 5d is fixedly connected to the driving wheel 5c, and the driving wheel 5c and the driven wheel 5b are connected with a transmission belt 5e for rolling together. When the motor 5d is started, the motor 5d will drive the driving wheel 5c to rotate, and the driving wheel 5c will drive the transmission belt 5e to move on the driving wheel 5c and the driven wheel 5b. At the same time, we divide the mounting frame 5a into the first frame 5a1 and the second frame 5a2, install the four driven wheels 5b on the first frame 5a1, install the driving wheel 5c on the second frame 5a2, and fix the second hydraulic cylinder 5f on the top of the first frame 5a1, so that the top end of the output shaft of the second hydraulic cylinder 5f is fixedly connected to the side wall of the second frame 5a2. When the output shaft of the third hydraulic cylinder 5h is extended, it drives the transmission belt 5e. When approaching the flange, the transmission belt 5e between the two driven wheels 5b at the end will be recessed toward the driving wheel 5c. At this time, the output shaft of the second hydraulic cylinder 5f is gradually shortened, so that the length of the transmission belt 5e between the two middle driven wheels 5b and the driving wheel 5c can be shortened, and the excess margin is moved to fit with the flange, thereby ensuring the tension of the transmission belt 5e, and when the two driven wheels 5b at the end drive the transmission belt 5e to be close to the outer peripheral surface of the flange, surface contact will be generated between the flange and the transmission belt 5e. At this time, when the transmission belt 5e moves, the friction force generated by the surface contact will drive the flange to rotate, and cooperate with the thrust bearing 3 and the roller 4a in the clamping assembly 4, so that the force required for the rotation of the flange is reduced. Compared with the prior art in which the power component 5 transmits the force to the turntable, the turntable transmits the force to the clamping assembly 4, the clamping assembly 4 transmits the force to the flange through clamping, and the flange rotates again, the technical solution of the present invention is that the power component 5 directly transmits the force to the flange, which not only reduces the process of force transmission, but also reduces the demand for clamping force, thereby preventing damage to the surface of the flange.

[0045] Combination Figure 7 and Figure 8As shown, the power assembly 5 also includes a first wedge block 5i slidably connected to the top of the transmission rod 5g, an extrusion wheel 5j rotatably installed in the first wedge block 5i, a second wedge block 5k matched with one side of the first wedge block 5i, a transmission plate 5l fixedly installed on one side of the second wedge block 5k, a guide plate 5m penetrating and slidably connected in the transmission plate 5l, a spring 5n fixedly installed between the first wedge block 5i and the first frame 5a1, and a first rod 5o and a second rod 5p rotatably installed on the opposite side of the guide plate 5m and the driven wheel 5b, the first rod 5o and the second rod 5p are rotatably connected at the ends, the guide plate 5m is fixedly connected to the top of the second hydraulic cylinder 5f, and the spring 5n is fixedly installed between the first wedge block 5i and the first frame 5a1 in the initial state. 5n is in a contracted state, and the second wedge block 5k is supported by the first wedge block 5i. When the driven wheel 5b rotates, the driven wheel 5b drives the second rod 5p to rotate, and the second rod 5p drives the first rod 5o to rotate. The angle between the first rod 5o and the second rod 5p will be reduced due to the rotation. At this time, the transmission plate 5l will be pulled downward, thereby driving the second wedge block 5k to descend. The second wedge block 5k squeezes the first wedge block 5i to move horizontally, so that the squeezing wheel 5j contacts the surface of the transmission belt 5e, exerting local pressure on the transmission belt 5e, thereby enhancing the friction between the transmission belt 5e and the flange. At the same time, the spring 5n will be driven and stretched by the first wedge block 5i;

[0046] In combination with a raw material cutting device for flange production, the present invention also provides a cutting method for operating the raw material cutting device for flange production to perform cutting, and the method comprises the steps of:

[0047] S1: Use the fork on the forklift to move the flange onto the thrust bearing 3, so that all the rollers 4a are located in the inner ring of the flange at the same time, and then lower the fork into the through groove 7. At this time, the bottom surface of the flange will contact the top surface of the thrust bearing 3, and the forklift can be pulled out;

[0048] S2: After that, all the output shafts of the first hydraulic cylinders 4c are shortened synchronously. Because the flange is not necessarily exactly in the middle when it is placed on the thrust bearing 3, the first hydraulic cylinder 4c will drive the limit rod 4b, and the limit rod 4b will drive the roller 4a to fit with the inner circumference of the flange and drive the flange to move. When all the rollers 4a fit with the flange, it means that the flange is aligned. The output shaft of the first hydraulic cylinder 4c will not be shortened any more, ensuring that the roller 4a will not apply radial force to the flange any more.

[0049] S3: Then the output shaft of the third hydraulic cylinder 5h extends to drive the mounting frame 5a, and the mounting frame 5a drives the driving wheel 5c and the driven wheel 5b, so that the transmission belt 5e fits the outer peripheral surface of the flange. As the area of ​​the transmission belt 5e fitting the flange increases, the output shaft of the second hydraulic cylinder 5f gradually shortens to ensure that the tension of the transmission belt 5e is within the required range. When the two driven wheels 5b at the end make the transmission belt 5e fit tightly against the outer peripheral surface of the flange, the third hydraulic cylinder 5h and the second hydraulic cylinder 5f stop moving;

[0050] S4: Start the motor 5d, the output shaft of the motor 5d drives the driving wheel 5c to rotate, the driving wheel 5c drives the transmission belt 5e to move, and the transmission belt 5e drives the flange to rotate through friction until the rotation speed of the flange reaches the rotation speed required for processing;

[0051] S5: Start the XY-axis slide module 6 to operate the tool assembly 2 to process the top surface of the flange, and use different tools to perform scraping, cutting, pinning and other processing.

[0052] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A raw material cutting device for flange production, used for processing the surface of the flange, comprising a frame (1) and a tool assembly (2) for processing the surface of the flange, characterized in that: The frame (1) is provided with a thrust bearing (3) supporting a flange, a plurality of clamping assemblies (4) radially moving on the inner ring of the thrust bearing (3), and a power assembly (5) in surface contact with the outer circumference of the flange, wherein the clamping assembly (4) comprises a roller (4a) in line contact with the inner circumference of the flange, and the roller (4a) can only rotate around its own central axis when in contact with the inner circumference of the flange; The thrust bearing (3) replaces the turntable in the prior art, abandons the transmission method of using the turntable in cooperation with the clamping assembly (4) to drive the flange using the clamping force, and uses the friction force generated when the power assembly (5) contacts the flange surface to directly drive the flange to rotate.

2. The raw material cutting equipment for flange production according to claim 1 is characterized in that: The clamping assembly (4) further comprises a limiting rod (4b) rotatably mounted at the bottom of the roller (4a), and a first hydraulic cylinder (4c) matched with the limiting rod (4b), wherein the limiting rod (4b) passes through the frame (1) and is slidably connected to the frame (1), the first hydraulic cylinder (4c) is fixedly connected to the frame (1), and the output end of the first hydraulic cylinder (4c) is fixedly connected to the end of the limiting rod (4b).

3. The raw material cutting equipment for flange production according to claim 2 is characterized in that: The plurality of rollers (4a) are distributed in a ring array, wherein one of the rollers (4a), the center axis of the flange and the power assembly (5) are located on the same vertical plane.

4. The raw material cutting equipment for flange production according to claim 2 is characterized in that: The inner diameter of the thrust bearing (3) is larger than the inner diameter of the flange, and when the outer peripheral surface of the roller (4a) contacts the inner peripheral surface of the flange, it does not contact the inner peripheral surface of the thrust bearing (3).

5. The raw material cutting equipment for flange production according to claim 1 is characterized in that: The power assembly (5) comprises a mounting frame (5a), a driven wheel (5b) and a driving wheel (5c) rotatably mounted on the mounting frame (5a), a motor (5d) fixedly mounted on the mounting frame (5a), and a transmission belt (5e) rollingly connected outside the driven wheel (5b) and the driving wheel (5c), wherein the transmission belt (5e) is in contact with the outer peripheral surface of the flange, and the output end of the motor (5d) is fixedly connected to the driving wheel (5c).

6. The raw material cutting equipment for flange production according to claim 5, characterized in that: The mounting frame (5a) comprises a first frame (5a1) rotatably connected to the driven wheel (5b), and a second frame (5a2) rotatably connected to the driving wheel (5c), a motor (5d) is fixedly mounted on the top of the second frame (5a2), a second hydraulic cylinder (5f) is fixedly mounted on the top of the first frame (5a1), and the top of the output end of the second hydraulic cylinder (5f) is fixedly connected to the second frame (5a2).

7. The raw material cutting equipment for flange production according to claim 6, characterized in that: The power assembly (5) also includes a transmission rod (5g) fixedly connected to the bottom of the first frame (5a1), and a third hydraulic cylinder (5h) fixedly mounted on the frame (1), wherein the output shaft of the third hydraulic cylinder (5h) passes through the frame (1) and is slidably connected to the frame (1), and the output end of the third hydraulic cylinder (5h) is fixedly connected to the transmission rod (5g).

8. The raw material cutting equipment for flange production according to claim 1 is characterized by: An XY-axis slide module (6) is fixedly mounted on the frame (1); an output end of the XY-axis slide module (6) is fixedly connected to the tool assembly (2); and a symmetrically distributed through groove (7) is provided on the top of the thrust bearing (3).

9. The raw material cutting equipment for flange production according to claim 7, characterized in that: The power assembly (5) also includes a first wedge block (5i) slidably connected to the top of the transmission rod (5g), an extrusion wheel (5j) rotatably installed in the first wedge block (5i), a second wedge block (5k) matched with one side of the first wedge block (5i), a transmission plate (5l) fixedly installed on one side of the second wedge block (5k), a guide plate (5m) passing through and slidably connected to the transmission plate (5l), a spring (5n) fixedly installed between the first wedge block (5i) and the first frame (5a1), and a first rod (5o) and a second rod (5p) rotatably installed on the opposite side of the guide plate (5m) and the driven wheel (5b), the first rod (5o) and the second rod (5p) being rotatably connected at their ends, and the guide plate (5m) being fixedly connected to the top of the second hydraulic cylinder (5f).

10. A cutting method for operating the raw material cutting device for flange production according to any one of claims 1 to 9 for cutting, characterized in that: The following steps are involved: S1: Move the flange to the thrust bearing (3) and place it so that the plurality of rollers (4a) are simultaneously located in the inner ring of the flange; S2: the output shafts of the plurality of first hydraulic cylinders (4c) are shortened synchronously, and the rollers (4a) are driven to move away from each other through the limit rod (4b), until the plurality of rollers (4a) are in contact with the inner peripheral surface of the flange at the same time, thereby achieving centering of the flange; S3: The output shaft of the third hydraulic cylinder (5h) is extended to drive the driven wheel (5b) to drive the transmission belt (5e) to fit the outer peripheral surface of the flange, and at the same time, the output shaft of the second hydraulic cylinder (5f) is shortened to ensure that the transmission belt (5e) remains taut; S4: starting the motor (5d) to drive the transmission belt (5e), ​​and using the friction between the transmission belt (5e) and the flange to drive the flange to rotate, so that the flange reaches a predetermined speed; S5: The XY-axis slide module (6) operates the tool assembly (2) to process the top surface of the flange, and uses different tools to perform scraping, cutting, pinning and other processing.

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