False axle for drum processing and method for processing a drum using the same

Abstract

This invention relates to a dummy shaft for cylinder machining and a method for machining cylinders using the same. The dummy shaft includes: a base assembly adapted to fix the dummy shaft to a machine tool's chuck, and the base assembly having a recessed hole at the center of its end face; and an interchangeable sub-plate detachably fixed to the base assembly, the interchangeable sub-plate being used to fix one end of the cylinder. By replacing the interchangeable sub-plate with one that matches cylinders of different specifications, the dummy shaft allows for easy installation and removal of cylinders, thereby shortening tool preparation and adjustment time and improving cutting speed.

Description

Technical Field

[0001] This invention relates to the field of coal mine equipment manufacturing technology, specifically to a dummy shaft for roller processing and a method for processing rollers using the dummy shaft. Background Technology

[0002] Turning the outer diameter is an important process in the machining of drive rollers for belt conveyors in coal mines. Typically, the roller is mounted on a machine tool using a dummy shaft to complete machining processes such as turning the outer diameter and applying rubber coating.

[0003] Currently, in existing technologies, the use of dummy shafts in roller machining requires replacing them with different specifications to accommodate different roller sizes. This means each roller of a different size needs a specific dummy shaft, significantly limiting the dimensional constraints of roller machining. Furthermore, the assembly process is extremely time-consuming, requiring the dummy shaft to be passed through the roller's inner bore and secured with a tensioning sleeve. This complex installation process, coupled with frequent use, causes wear and paint peeling at the mounting points of the dummy shaft, shortening its lifespan and increasing processing costs.

[0004] Therefore, the existing dummy shaft technology suffers from problems such as high replacement costs, easy wear, inflexible rotation, and poor interchangeability during use. Summary of the Invention

[0005] In view of this, the present invention provides a dummy shaft for roller machining and a method for machining rollers using the same, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0006] To achieve the aforementioned objective, a first aspect of the present invention provides a dummy shaft for roller machining, wherein the dummy shaft comprises: A mother assembly, adapted to fix the dummy shaft to a positioning chuck of a machine tool, wherein the end face of the mother assembly has a recessed hole at its center; and Interchangeable sub-plates are detachably fixed to the main body assembly and are used to fix one end of the roller.

[0007] In the aforementioned dummy shaft, optionally, the mother assembly consists of a mother base plate, a mother rear cover plate, and a mother spindle. The mother base plate and the mother rear cover plate are disc-shaped, the mother base plate has a central through hole, and the mother spindle is cylindrical. The mother base plate and the mother rear cover plate are respectively welded to both ends of the mother spindle. The outer circumferential surface of the mother rear cover plate is consistent with the outer circumferential surface of the mother spindle, thereby forming a shaft end suitable for clamping by the positioning chuck.

[0008] In the aforementioned dummy shaft, optionally, the interchangeable sub-plate is disc-shaped, and the mother base plate and the interchangeable sub-plate are detachably attached and fixed together. The mating surfaces between the mother base plate and the interchangeable sub-plate are engaged by a centering protrusion and a centering recess, and the interchangeable sub-plate and the mother base plate have the same outer diameter.

[0009] In the aforementioned dummy shaft, optionally, a plurality of flattened portions are symmetrically arranged on the outer circumferential surface of the shaft end.

[0010] In the aforementioned dummy shaft, optionally, the mother base plate is provided with through grooves that extend radially, and the interchangeable daughter plate is fixed to the mother base plate by bolts passing through the grooves.

[0011] In the aforementioned dummy shaft, optionally, a centering recess is formed on the side of the base plate of the mother body that is fixed to the main shaft of the mother body, and the main shaft of the mother body is engaged in the centering recess.

[0012] In the aforementioned dummy shaft, optionally, mounting holes corresponding to the positions are evenly distributed on the base plate of the main body and the interchangeable sub-body plate, through which bolts can be used to fix the dummy shaft to the end of the roller.

[0013] Optionally, in the aforementioned dummy shaft, the surface of the dummy shaft is subjected to a corrosion-resistant process.

[0014] To achieve the aforementioned objective, a second aspect of the present invention provides a method for machining a roller using a dummy shaft as described in any one of the first aspects, wherein the method comprises the following steps: Select suitable interchangeable sub-plates and assemble them with the parent assembly to form the dummy shaft; The two sets of dummy shafts are respectively fixed to both ends of the roller; and The roller is mounted on the machine tool via the dummy shaft, with one end fixed to the positioning chuck of the machine tool and the other end mounted to the rotary center of the machine tool through the concave hole.

[0015] Optionally, in the method described above, the method further includes the following steps: The dummy shaft is disassembled into the main body assembly and the interchangeable sub-body plate.

[0016] The dummy shaft of the present invention includes a main body assembly and interchangeable sub-body plates. During roller machining, the interchangeable sub-body plates are installed at both ends of the roller and respectively mounted to the positioning chuck and rotary center of the machine tool via the main body assembly.

[0017] For rollers of different specifications, the dummy shaft of this invention can be used to install the roller onto the machine tool by replacing the interchangeable sub-body plates of the appropriate specifications. This dummy shaft structure is lightweight, easy to replace and install, effectively saving replacement steps and time in roller processing. Furthermore, the dummy shaft rotates flexibly, and its surface is treated with a corrosion-resistant process, making it less prone to wear, increasing its service life, reducing processing costs, and providing convenience for roller processing. Attached Figure Description

[0018] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings: Figure 1 This is a perspective view of one embodiment of the dummy shaft for drum processing according to the present invention; Figure 2 for Figure 1 A disassembled three-dimensional schematic diagram of an embodiment of the dummy shaft; Figure 3 for Figure 1 A side perspective view of an embodiment of the dummy axis; and Figure 4 It shows the way Figure 1 The dummy shaft mounts the roller to the machine tool's positioning chuck and rotary ejector.

[0019] Reference numerals: 1-Dummy shaft; 11-Positioning chuck; 12-Roller; 13-Rotating ejector pin; 2-Main body assembly; 21-Main body base plate; 22-Main body rear cover plate; 23-Main body main shaft; 24-Concave hole; 25-Shaft end; 26-Centering recess; 27-Waist groove; 28-Flattened part; 29-Chamfer; 3-Interchangeable daughter body plate; 31-Centering protrusion; 32-Daughter body mounting hole; 33-Main body mounting hole. Detailed Implementation

[0020] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the dummy shaft for roller processing and the method of processing rollers using the same according to the present invention will be described by way of example below. However, all descriptions should not be construed as limiting the present invention in any way.

[0021] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features (or their equivalents) without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of this description.

[0022] It should also be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship of the dummy axis shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0023] Figure 1 This is a perspective view of one embodiment of the dummy shaft for roller processing according to the present invention.

[0024] from Figure 1 As can be seen from the embodiments, the dummy shaft 1 includes a main body assembly 2 and an interchangeable sub-body positioning plate 3, which is detachably fixed to the main body assembly 2. The interchangeable sub-body plate 3 is used to fix one end of the roller. The interchangeable sub-body plate 3 can be adapted and replaced according to different specifications of rollers with different hole diameters and hole spacings, and one end of the roller is installed to the machine tool via the main body assembly 2. Specifically, one end of the roller is installed to the positioning chuck of the machine tool via the dummy shaft, and the other end of the roller is installed to the rotary center of the machine tool via the dummy shaft.

[0025] The mother assembly 2 consists of a mother base plate 21, a mother rear cover plate 22, and a mother main shaft 23. The mother base plate 21 and the mother rear cover plate 22 are respectively fixed to both ends of the mother main shaft 23. In optional embodiments, the fixing method can be, but is not limited to, welding or integral molding.

[0026] according to Figure 1 In one embodiment, the rear cover plate 22 of the mother body is disc-shaped, and the main spindle 23 of the mother body is cylindrical. The main spindle 23 of the mother body is integrally formed with the rear cover plate 22 of the mother body, and the outer peripheral surface of the rear cover plate 22 is consistent with the outer peripheral surface of the main spindle 23 of the mother body, thereby forming a shaft end 25 suitable for clamping by a positioning chuck of a machine tool.

[0027] exist Figure 1 In this embodiment, multiple flattened portions 28 can be symmetrically arranged on the outer circumferential surface of the spindle end of the main body 23, such as two, three, four, etc. During roller machining, the positioning chuck of the machine tool can clamp and fix it at the multiple flattened portions 28, which can increase the clamping force, torque and cutting force of the machine tool on the dummy shaft, improve stability, and increase the depth of cut during roller machining. During the machining process, the roller is fixed in the machining position of the machine tool and will not fall off or shift, thereby speeding up the roller machining time and the depth of cut.

[0028] As can also be seen from the figure, the end face of the rear cover plate 22 of the mother body has a recessed hole 24 at its center. During the machining of the roller, the recessed hole 24 can be installed in the rotary center of the machine tool to axially fix the other end of the roller. During the machining process, the positioning chuck of the machine tool fixes one end of the roller through the shaft end 25 of a set of dummy shafts 1, and the rotary center of the machine tool fixes the other end of the roller through the recessed hole 24 of another set of dummy shafts 1. The positioning chuck of the machine tool can drive the roller to rotate through a set of dummy shafts 1, and the other end of the roller abuts against the rotary center to rotate through another set of dummy shafts 1.

[0029] Figure 2 for Figure 1 A disassembled three-dimensional schematic diagram of an embodiment of the dummy shaft.

[0030] from Figure 2 As can be clearly seen in the embodiments, the end of the main spindle 23 is circular, and this circular shape is engaged with the base plate 21. The base plate 21 is disc-shaped, and has centering recesses 26 on both sides. These centering recesses 26 are used to fix the main spindle 23 and the interchangeable sub-positioning plate 3, respectively. Specifically, the circular end of the main spindle 23 is engaged in the centering recess 26 on one side of the base plate 21. This engagement method can be, but is not limited to, welding. In optional embodiments, the base plate 21 can be as follows: Figure 1 The embodiment has a central through hole, which is used for machining correction during its manufacture and can save materials and reduce the weight of the base plate 21.

[0031] The base plate 21 has a through groove 27 and evenly distributed mounting holes 33. The groove 27 extends radially and is evenly distributed around the center of the base plate 21. The groove 27 can be used to install and fix interchangeable daughter plates 3 of different specifications. The groove 27 can be adapted to fix interchangeable daughter plates 3 of different specifications, and the fixing method can be, but is not limited to, bolt fixing. This fixing method also facilitates the installation and removal of interchangeable daughter plates 3, making it convenient to adapt to different specifications of interchangeable daughter plates 3 according to different roller specifications.

[0032] It should be noted that the base plate 21 has a mounting hole 33 corresponding to the mounting hole 32 of the interchangeable sub-plate 3, allowing the dummy shaft 1 to be mounted to the end of the roller using bolts. Specifically, the end of the roller has threaded holes, the position and number of which correspond one-to-one with the position and number of mounting holes on the base plate 21 and the interchangeable sub-plate 3. Bolts can pass through the base plate 21 and the interchangeable sub-plate 3 and be fixed to the threaded holes at one end of the roller. This fixing method not only securely mounts the roller but also facilitates its installation and removal, thereby saving time during roller processing for installation and replacement.

[0033] In an optional embodiment, the waist groove 27 can also be used to fix rollers of different specifications. In this case, bolts with different circumferential diameters of the threaded holes on the rollers can move within the waist groove. The radial waist grooves can adjust the center distance of the fastening bolts according to the diameter of the roller. The mounting holes of the mother body can be used to fix it to the interchangeable daughter body plates.

[0034] In optional embodiments, the waist groove 27 may be, but is not limited to, as follows: Figure 1 The six mounting holes in the embodiment can be adjusted according to actual needs. The mounting holes are also evenly distributed around the center of the base plate 21. In optional embodiments, the mounting holes can be, but are not limited to, as shown below. Figure 2 The three examples are shown, and the specific number can be determined according to actual needs.

[0035] according to Figure 2 In one embodiment, the interchangeable sub-plate 3 is disc-shaped. Centering protrusions 31 are provided at the center of both sides of the interchangeable sub-plate 3. The centering protrusion 31 on one side of the interchangeable sub-plate 3 engages with the centering recess 26 on the other side of the base plate 21 for positioning, facilitating the installation of the interchangeable sub-plate 3 and ensuring its fixed position during rotation, preventing displacement. Figure 2 In one embodiment, the interchangeable sub-plate 3 and the base plate 21 can have the same outer diameter, which facilitates the installation of one end of the roller.

[0036] In an optional embodiment, the centering protrusion 31 of the interchangeable sub-plate 3 can also be a centering recess, and the centering recess 26 of the mother base plate 21 can also be a centering protrusion, as long as the interchangeable sub-plate 3 and the mother base plate 21 can be mutually positioned and adapted for installation.

[0037] The centering protrusion 31 on the other side of the interchangeable sub-plate 3 can be fitted into the shaft hole of the roller, and fixed in the threaded holes at both ends of the roller by bolts passing through the mother mounting hole 33 of the mother base plate 21 and the sub-plate mounting hole 32 of the interchangeable sub-plate 3. This fixes the dummy shaft 1 to the roller, thereby driving the roller to rotate around its axis during processing. Specifically, multiple interchangeable sub-plates 3 can be provided, with different diameter centering protrusions 31 to adapt to rollers with different shaft hole diameters. Different interchangeable sub-plates 3 can also be configured with different thicknesses to adapt to rollers of different lengths. In actual operation, centering protrusions 31 of different diameters can be equipped with interchangeable sub-plates 3 of various thicknesses to ensure that the dummy shaft adapts to rollers with various shaft hole diameters and lengths.

[0038] The interchangeable sub-plate 3 can be as follows: Figure 1The embodiment is provided with a central through hole, which is used for machining correction during its manufacturing and can save materials and reduce the weight of the interchangeable sub-plate 3, thereby making it easier to replace.

[0039] In an optional embodiment, the overall surface of the dummy shaft 1 may be made of lightweight materials such as aluminum alloy, and the surface of the dummy shaft 1 is treated with a corrosion-resistant process to reduce wear and paint peeling, thereby increasing the service life of the dummy shaft and saving the cost of roller processing.

[0040] Figure 3 for Figure 1 A side perspective view of an embodiment of the dummy axis.

[0041] This illustration shows a schematic diagram of the matching and installation of the various components of the dummy shaft 1 of the present invention. From Figure 3 It can be seen that there are chamfers 29 at the connection between the rear cover plate 22 and the spindle 23, and at the connection between the spindle 23 and the base plate 21. The chamfers 29 are suitable for welding the rear cover plate 22, the spindle 23 and the base plate 21 into a single body assembly 2, so that the body assembly 2 has a stable structure. Thus, the dummy shaft 1 can also be stably installed between the positioning chuck and the rotary ejector of the machine tool.

[0042] from Figure 3 As can be seen, the interchangeable sub-plate 3 is installed on the main body assembly 2 by bolts. Therefore, the dummy shaft 1 of the present invention only needs to replace the interchangeable sub-plate 3 of different specifications to adapt to rollers of various specifications, thereby reducing the processing and assembly time and the difficulty of dummy shaft installation.

[0043] Figure 4 It shows the way Figure 1 The dummy shaft mounts the roller to the machine tool's positioning chuck and rotary ejector.

[0044] In actual machining, two sets of dummy shafts 1 are fixedly installed at the center of the shafts at both ends of the roller 12, which is then mounted on the machine tool via the dummy shafts 1 at both ends. Specifically, one end of the roller 12 is mounted to the positioning chuck 11 of the machine tool, and the other end is mounted to the rotary center of the machine tool. Figure 4 As can be seen from the embodiment, the positioning chuck 11 is clamped at the flattened portion 28 of the main spindle 23 of the dummy shaft 1. This flattened portion 28 increases the stability of the positioning chuck 11 for the dummy shaft 1, ensuring that the roller 12 does not shift in the machining position on the machine tool, thereby increasing the depth of cut during roller 12 machining and accelerating the machining time. At the other end of the machine tool, the rotary ejector pin 13 is installed in the recessed hole 24 of the rear cover plate 22 of the other dummy shaft 1 to fix the other end of the roller 12. In this way, the roller 12 is securely and accurately mounted in the machining area of ​​the machine tool.

[0045] The present invention also provides a method for machining the roller 12 using the above-mentioned dummy shaft, which is described below. Figure 4 The following examples will be used to illustrate: First, select two suitable interchangeable sub-plates 3 according to the specifications of roller 12, and assemble these two interchangeable sub-plates 3 with the two parent components 2 to form two sets of dummy shafts 1 respectively.

[0046] Next, fix the two assembled dummy shafts 1 to both ends of the roller 12 respectively.

[0047] Next, one end of the dummy shaft 1 is fixed to the positioning chuck 11 of the machine tool. The positioning chuck 11 clamps the dummy shaft 1 to fix the position of the roller 12 and drive the rotation of the roller 12. The other end of the dummy shaft 1 is installed into the rotary center of the machine tool through the concave hole 24. In this way, the roller 12 is precisely fixed to the machining part of the machine tool by the dummy shaft 1, ensuring that the roller 12 does not fall off or shift during machining.

[0048] Then, the machine tool is started. The positioning chuck 11 of the machine tool drives the roller 12 to rotate through the dummy shaft 1 at one end. The other end of the roller 12 abuts against the rotary center 13 of the machine tool through the concave hole 24 of the dummy shaft 1 at the other end of the machine tool and rotates around the rotary center 13. The machine tool begins to process the roller 12.

[0049] Finally, the machining is completed. Remove the roller 12 from the machine tool's positioning chuck and rotary center, remove the dummy shaft 1, and disassemble the dummy shaft 1 into the main body assembly 2 and the interchangeable sub-body plate 3 for future machining.

[0050] The dummy shaft for roller machining of the present invention includes a main body assembly and an interchangeable secondary body plate, which are detachably and fixedly installed as a single unit. The dummy shaft can be mounted on the roller to be machined via the interchangeable secondary body plate and on the machine tool via the main body assembly. The dummy shaft of the present invention can be adapted to rollers of different specifications by replacing the interchangeable secondary body plate, thereby shortening the tool preparation time and adjustment time, and increasing the cutting speed. The positioning chuck of the machine tool clamps the dummy shaft through the flattened portion at the shaft end of the main body assembly, preventing the dummy shaft from falling off or shifting during machining, thereby increasing the depth of cut and improving the cutting speed.

[0051] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A false shaft for drum processing, characterized in that, The dummy shaft (1) includes: A mother assembly (2), which is adapted to fix the dummy shaft (1) to the positioning chuck (11) of a machine tool, and the end face of the mother assembly (2) has a recess (24) at its center; and Interchangeable sub-plate (3), which is detachably fixed to the main body assembly (2), and is used to fix one end of the roller (12); The mother assembly (2) consists of a mother base plate (21), a mother rear cover plate (22), and a mother spindle (23). The mother base plate (21) and the mother rear cover plate (22) are disc-shaped. The mother base plate (21) has a central through hole. The mother spindle (23) is cylindrical. The mother base plate (21) and the mother rear cover plate (22) are respectively welded to both ends of the mother spindle (23). The outer circumferential surface of the mother rear cover plate (22) is consistent with the outer circumferential surface of the mother spindle (23), thus forming a shaft end (25) suitable for clamping by the positioning chuck (11). The mother base plate (21) has through grooves (27) evenly distributed on it. The grooves (27) extend radially. The interchangeable daughter plate (3) is fixed to the mother base plate (21) by bolts passing through the grooves (27). The waist groove (27) is used to adjust the center distance of the bolt according to the diameter of the roller, and to install and fix the interchangeable sub-plates (3) of different specifications.

2. The false shaft of claim 1, wherein, The interchangeable sub-plate (3) is disc-shaped, and the mother base plate (21) is attached and fixed to the interchangeable sub-plate (3) in a detachable manner. The mating surfaces between the mother base plate (21) and the interchangeable sub-plate (3) are engaged by a centering protrusion (31) and a centering recess (26). The interchangeable sub-plate (3) and the mother base plate (21) have the same outer diameter.

3. The shaft as claimed in claim 1, wherein Multiple flattened portions (28) are symmetrically arranged on the outer circumferential surface of the shaft end (25).

4. The false shaft of claim 1 wherein, A centering recess (26) is formed on the side of the base plate (21) that is fixed to the main shaft (23), and the main shaft (23) is engaged in the centering recess (26).

5. The false shaft of claim 1 wherein, Mounting holes with corresponding positions are evenly distributed on the mother base plate (21) and the interchangeable daughter plate (3). Through the mounting holes, the dummy shaft (1) can be fixed to the end of the roller (12) using bolts.

6. The false shaft of claim 1 wherein, The surface of the dummy shaft (1) is treated with a corrosion-resistant process.

7. A method for machining a roller (12) using a dummy shaft (1) as described in any one of claims 1 to 6, characterized in that, The method includes the following steps: Select a suitable interchangeable sub-plate (3) and assemble it with the mother component (2) to form the dummy shaft (1); The two sets of dummy shafts (1) are respectively fixed to both ends of the roller (12); and The roller (12) is mounted on the machine tool through the dummy shaft (1), with one end fixed to the positioning chuck (11) of the machine tool and the other end mounted to the rotary ejector pin (13) of the machine tool through the concave hole (24).

8. The method of claim 7, wherein, The method further includes the following steps: The dummy shaft (1) is disassembled into the mother assembly (2) and the interchangeable daughter plate (3).

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