An integral processing method for an expansion and contraction head diameter increasing sleeve

Abstract

The present invention belongs to the technical field of diameter increasing sleeve processing, and specifically relates to an integral processing method of an expanding and shrinking head diameter increasing sleeve, which is characterized by comprising the following steps: 1) casting a cylindrical expanding and shrinking head diameter increasing sleeve, which is an integrally formed structure, and has a fan-shaped lining plate portion and a connecting portion, and the connecting portion connects a plurality of fan-shaped lining plate portions into a whole; 2) using a lathe to remove the oxide scale on the inner and outer surfaces of all the fan-shaped lining plate portions of the cylindrical expanding and shrinking head diameter increasing sleeve at one time; 3) using a CNC machining center CNC to drill holes on all the fan-shaped lining plate portions of the cylindrical expanding and shrinking head diameter increasing sleeve at one time; 4) using a CNC machining center CNC to divide the cylindrical expanding and shrinking head diameter increasing sleeve into a plurality of fan-shaped lining plates, and the plurality of fan-shaped lining plates are installed on the core shaft of the unwinding machine to form a cylindrical expanding and shrinking head diameter increasing sleeve structure. It has the effects of simplifying processing steps, improving product precision, improving work efficiency, and reducing processing costs and labor intensity.

Description

Technical Field

[0001] The invention relates to a method for processing an expanding and shrinking head diameter increasing sleeve, in particular to an integral processing method for an expanding and shrinking head diameter increasing sleeve, which is suitable for integral processing of an expanding and shrinking head diameter increasing sleeve and belongs to the technical field of diameter increasing sleeve processing. Background Art

[0002] In production practice, the expandable and shrinkable diameter increasing sleeve is used to be installed on the mandrel of the uncoiler or coiler, and includes a number of sector-shaped diameter increasing plates spliced ​​together to form a hollow cylindrical shape, and a number of expansion and contraction parts arranged inside the sector-shaped diameter increasing plates and connecting two adjacent sector-shaped diameter increasing plates. That is, the expansion and contraction head diameter increasing sleeve is composed of a number of sector-shaped lining plates, which are fixed on the mandrel with screws around the mandrel.

[0003] In the prior art, the expansion and shrinkage head diameter increasing sleeve is generally divided into several steel castings for separate processing, and the specific processing method is: ① Cast several (for example: four) fan-shaped lining plates, each with the same structure, as a part of the expansion and shrinkage head diameter increasing sleeve; ② The fan-shaped lining plates are clamped and fixed in position by CNC machining center, and the oxide scale on the inner surface is removed; ③ The inner hole of the fan-shaped lining plate is processed by CNC machining center; ④ Several (for example: four) fan-shaped lining plates are fixed on the core shaft by screws to form a circle; ⑤ The outer surface is processed by CNC machining center to remove the oxide scale, and the processing process of the expansion and shrinkage head diameter increasing sleeve is completed.

[0004] Since each sector liner needs to be positioned individually during the processing in order to carry out the inner and outer surface oxide scale and drilling processing, the existing split processing method has the following problems: the processing process is complicated, the labor intensity is high, the processing efficiency is low, the processing cost is high and the product precision is low. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of complicated processing process, high labor intensity, low processing efficiency, high processing cost and low product precision in the existing expansion and contraction head diameter increasing sleeve processing method, and to provide an integral processing method of the expansion and contraction head diameter increasing sleeve, which has the effects of simplifying the processing steps, improving product precision, improving work efficiency and reducing processing costs and labor intensity.

[0006] In order to achieve the purpose of the present invention, the following technical solutions can be adopted:

[0007] An integral processing method for an expansion and contraction head diameter increasing sleeve is characterized by comprising the following steps:

[0008] 1) Casting a cylindrical expansion and contraction head diameter increasing sleeve, which is an integrally formed structure, and has a fan-shaped lining plate portion and a connecting portion, and a plurality of fan-shaped lining plates of the fan-shaped lining plate portion are connected into a whole through the connecting portion;

[0009] 2) Use a lathe to remove the oxide scale on the inner and outer surfaces of all the fan-shaped lining parts of the cylindrical expansion and contraction head diameter increasing sleeve at one time;

[0010] 3) Use the CNC machining center to drill holes on all the fan-shaped lining plates of the cylindrical expansion and contraction head diameter increasing sleeve at one time to form screw holes for connecting the mandrel;

[0011] 4) Use a CNC machining center to divide the cylindrical expansion and shrink head diameter increasing sleeve into a plurality of fan-shaped liner plates, and install the plurality of fan-shaped liner plates on the mandrel of the uncoiler or the coiler to form a cylindrical expansion and shrink head diameter increasing sleeve structure.

[0012] In order to achieve the purpose of the present invention, the following technical solutions can also be adopted:

[0013] Furthermore, the removal of the oxide scale on the inner and outer surfaces in step 2) is to fix the cylindrical expansion and shrinkage head diameter increasing sleeve as a whole on a lathe, and remove the oxide scale on the inner and outer surfaces of the cylindrical expansion and shrinkage head diameter increasing sleeve at one time with a turning tool.

[0014] Furthermore, the step 3) of drilling holes on all the fan-shaped lining plates of the cylindrical expanding and shrinking head increasing sleeve at one time is to fix the cylindrical expanding and shrinking head increasing sleeve as a whole on a CNC machine tool of a CNC machining center, and use the drill bit on the CNC machine tool of the CNC machining center to drill screw holes on the fan-shaped lining plate part.

[0015] Furthermore, the segmentation into a plurality of sector-shaped lining plates in step 4) is to fix the cylindrical expanding and shrinking head diameter increasing sleeve as a whole on a CNC machine tool of a CNC machining center, and use a milling cutter on the CNC machine tool of the CNC machining center to segment the cylindrical expanding and shrinking head diameter increasing sleeve, and after removing the connecting part, form a plurality of sector-shaped lining plates; the plurality of sector-shaped lining plates are installed on the core shaft of an uncoiler or a coiler by screws to form a cylindrical expanding and shrinking head diameter increasing sleeve structure.

[0016] Furthermore, the connection part has a plurality of evenly distributed long strip holes. By reserving the long strip holes during casting, when the CNC machining center CNC splits the workpiece, the milling cutter passes over the long strip holes without using a knife there, thereby reducing the workload of cutting the connection part and ensuring the overall strength of the casting.

[0017] Furthermore, the size and position of the screw holes on the fan-shaped lining plate portion correspond to the screw holes on the core shaft to form an easily assembled and disassembled connection structure.

[0018] The invention has the following beneficial effects:

[0019] 1. The present invention changes the casting method from four-part casting to integral casting, and after casting, the casting is similar to a cylinder, and each sector is connected by a connecting part; the inner and outer surface processing is also changed from four-part processing to integral processing, and the inner and outer processing is changed from CNC processing by a CNC machining center to lathe processing of the inner and outer surfaces, and the clamping of the cylindrical workpiece is simpler and more stable; therefore, the existing expansion and contraction head diameter increasing sleeve processing method can solve the problems of complex processing process, high labor intensity, low processing efficiency, high processing cost and low product precision, and has the effects of simplifying the processing steps, improving product precision, improving work efficiency and reducing processing costs and labor intensity.

[0020] 2. Since the present invention changes the casting method from casting in four parts separately to casting in one piece, it has the advantages of simple casting mold structure, simple casting process and high efficiency.

[0021] 3. The present invention changes the subsequent skinning process from separate four-part processing to integral processing, and changes the CNC processing to lathe processing of the inner and outer surfaces, so it has the effects of simple casting mold structure, simple casting process, high efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an expansion and contraction head diameter increasing sleeve installed on a core shaft according to a specific embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of an expansion and contraction head diameter increasing sleeve involved in a specific embodiment of the present invention, which is integrally processed by casting.

[0024] Figure 3 It is a structural schematic diagram of the expansion and contraction head diameter increasing sleeve involved in a specific embodiment of the present invention, after the connecting portion is cut off and the fan-shaped liner is separated. DETAILED DESCRIPTION

[0025] Reference Figure 1 When the expansion and shrinking head diameter increasing sleeve produced by the integral processing method involved in the specific embodiment 1 of the present invention is installed on the core shaft, the four sector-shaped lining plates of the sector-shaped lining plate part 1 can be connected to the core shaft 3 by screws, and a gap 4 is left between adjacent sector-shaped lining plates.

[0026] Reference Figure 2 The expansion and shrinking head diameter increasing sleeve produced by the integral processing method involved in this embodiment is in the shape of a cylinder formed by integral casting, and has a fan-shaped lining plate portion 1 and a connecting portion 2. The four fan-shaped lining plates of the fan-shaped lining plate portion 1 are connected into a whole through the connecting portion 2.

[0027] Reference Figure 3 The fan-shaped liner of the expansion and contraction head diameter increasing sleeve produced by the integral processing method of this embodiment is processed by a CNC machining center CNC Figure 2The cylindrical expansion and contraction head diameter increasing sleeve is divided into one of a plurality of sector-shaped lining plates.

[0028] The present embodiment relates to an integral processing method for an expansion and contraction head diameter increasing sleeve, which is characterized by comprising the following steps:

[0029] 1) Casting a cylindrical expansion and contraction head diameter increasing sleeve, which is an integrally formed structure, and has a sector-shaped lining plate portion 1 and a connecting portion 2, and a plurality of sector-shaped lining plate portions 1 are connected into a whole through the connecting portion 2;

[0030] 2) Use a lathe to remove the oxide scale on the inner and outer surfaces of all the fan-shaped lining parts of the cylindrical expansion and contraction head diameter increasing sleeve at one time;

[0031] 3) Use a CNC machining center to drill holes on all the fan-shaped lining parts of the cylindrical expansion and contraction head diameter increasing sleeve at one time to form screw holes 1-1 for connecting the core shaft 3;

[0032] 4) Use a CNC machining center to divide the cylindrical expansion and shrink head diameter increasing sleeve into a plurality of fan-shaped liner plates 1, and install the plurality of fan-shaped liner plates on the mandrel 3 of the uncoiler or coiler to form a cylindrical expansion and shrink head diameter increasing sleeve structure.

[0033] Furthermore, the removal of the oxide scale on the inner and outer surfaces in step 2) is to fix the cylindrical expansion and shrinkage head diameter increasing sleeve as a whole on a lathe, and remove the oxide scale on the inner and outer surfaces of the cylindrical expansion and shrinkage head diameter increasing sleeve at one time with a turning tool.

[0034] Furthermore, the step 3) of drilling holes on all the sector-shaped lining plates of the cylindrical expanding and shrinking head increasing sleeve at one time is to fix the cylindrical expanding and shrinking head increasing sleeve as a whole on a CNC machine tool of a CNC machining center, and use a drill bit on the CNC machine tool of the CNC machining center to drill screw holes 1-1 on the sector-shaped lining plate part 1.

[0035] Furthermore, the segmentation into a plurality of sector-shaped lining plates in step 4) is to fix the cylindrical expanding and shrinking head diameter increasing sleeve as a whole on a CNC machine tool of a CNC machining center, and use a milling cutter on the CNC machine tool of the CNC machining center to segment the cylindrical expanding and shrinking head diameter increasing sleeve, and after removing the connecting part, form a plurality of sector-shaped lining plates; the plurality of sector-shaped lining plates are installed on the core shaft 3 of the uncoiler or the coiler by screws to form a cylindrical expanding and shrinking head diameter increasing sleeve structure.

[0036] Furthermore, the connecting portion 2 has a plurality of evenly distributed long strip holes 2-1. By reserving the long strip holes 2-1 during casting, when the CNC machining center CNC splits the workpiece, the milling cutter passes over the long strip holes 2-1 without using a knife there, thereby reducing the workload of cutting the connecting portion 2 and ensuring the overall strength of the casting.

[0037] Furthermore, the size and position of the screw hole 1 - 1 on the fan-shaped lining plate portion 1 correspond to the screw hole on the core shaft 3 to form an easily assembled and disassembled connection structure.

[0038] The present invention has the following characteristics: ① integrally cast the expansion and contraction head diameter increasing sleeve. ② use a lathe to process the inner and outer surfaces to remove the oxide scale. ③ use a CNC machining center to drill all the holes. ④ then use a CNC machining center to remove the part that connects the fan-shaped liner during casting. ⑤ use screws to fix the four fan-shaped liner plates on the core shaft to form a circle.

[0039] In this embodiment, the CNC machining center CNC is a CNC machine tool of conventional technology. The lathe is a general-purpose lathe of conventional technology.

[0040] In existing production practices, since each workpiece is a sector-shaped liner of a steel casting, and since steel castings have surface oxide scale, it is necessary to process the inner and outer surfaces of the workpiece to remove the oxide scale on the inner and outer surfaces of the workpiece; and during the drilling process, only a single sector-shaped steel casting can be processed separately. Since the sector-shaped liner of the expansion and shrinking head and diameter increasing sleeve is difficult to accurately position during the processing, the position of the inner and outer surfaces and the hole is difficult to process. Therefore, the existing expansion and shrinking head and diameter increasing sleeve processing methods have problems such as complex processing process, high processing cost, low product precision, high labor intensity and low processing efficiency. The use of the integral processing method of the expansion and shrinking head and diameter increasing sleeve described in the present invention can improve product precision and work efficiency, and meet the quality and progress requirements of production delivery.

[0041] The integral processing method described in this embodiment changes the casting method from casting in four parts to integral casting. After casting, it is similar to a cylinder, and each sector is partially connected. The inner and outer surface processing is also changed from processing in four parts to processing in an integral manner. The inner surface is processed by a CNC machining center and then processed by a lathe. The clamping of the cylindrical workpiece is simpler and more stable, and the drilling accuracy is also improved. In general, the processing efficiency and processing accuracy of the integral processing are greatly improved compared with the split processing.

Claims

1. An integral processing method for an expansion and contraction head diameter increasing sleeve, characterized in that The steps include: 1) Casting a cylindrical expansion and shrinkage head diameter increasing sleeve, the cylindrical expansion and shrinkage head diameter increasing sleeve is an integrally formed structure, comprising a fan-shaped lining plate portion (1) and a connecting portion (2), wherein a plurality of fan-shaped lining plates of the fan-shaped lining plate portion (1) are connected into a whole through the connecting portion (2); the connecting portion (2) has a plurality of evenly distributed long strip holes (2-1), and by reserving the long strip holes (2-1) during casting, when a CNC machining center (CNC) splits a workpiece, a milling cutter passes over the long strip holes (2-1) without using a cutter there, thereby reducing the workload of cutting the connecting portion (2) and ensuring the overall strength of the casting; 2) Use a lathe to remove the oxide scale on the inner and outer surfaces of all the fan-shaped lining parts of the cylindrical expansion and contraction head diameter increasing sleeve at one time; 3) Using a CNC machining center, drilling holes on all the sector-shaped lining plates of the cylindrical expansion and contraction head diameter increasing sleeve at one time to form screw holes (1-1) for connecting the core shaft (3); 4) using a numerical control machining center (CNC) to divide the cylindrical expansion and shrinking head diameter increasing sleeve into a plurality of fan-shaped lining plates, and mounting the plurality of fan-shaped lining plates on the mandrel (3) of the uncoiler or the coiler to form a cylindrical expansion and shrinking head diameter increasing sleeve structure; said dividing into a plurality of fan-shaped lining plates comprises fixing the cylindrical expansion and shrinking head diameter increasing sleeve as a whole on a numerical control machining center (CNC) machine tool, using a milling cutter on the numerical control machining center (CNC) machine tool to divide the cylindrical expansion and shrinking head diameter increasing sleeve, and removing the connecting portion to form a plurality of fan-shaped lining plates; said plurality of fan-shaped lining plates are mounted on the mandrel (3) of the uncoiler or the coiler by screws to form a cylindrical expansion and shrinking head diameter increasing sleeve structure.

2. The integral processing method of the expansion and contraction head diameter increasing sleeve according to claim 1, characterized in that: The removal of the oxide scale on the inner and outer surfaces in step 2) is to fix the cylindrical expansion and shrinkage head diameter increasing sleeve as a whole on a lathe, and remove the oxide scale on the inner and outer surfaces of the cylindrical expansion and shrinkage head diameter increasing sleeve with a lathe tool.

3. The integral processing method of the expansion and contraction head diameter increasing sleeve according to claim 1, characterized in that: The step 3) of drilling holes in all the fan-shaped lining plates of the cylindrical expansion and contraction head diameter increasing sleeve at one time is to fix the cylindrical expansion and contraction head diameter increasing sleeve as a whole on a CNC machine tool of a CNC machining center, and use a drill bit on the CNC machine tool of the CNC machining center to drill screw holes (1-1) on the fan-shaped lining plate part (1).

4. The integral processing method of the expansion and contraction head diameter increasing sleeve according to claim 1, characterized in that: The size and position of the screw hole (1-1) on the fan-shaped lining plate portion (1) correspond to the screw hole on the core shaft (3) to form an easily assembled and disassembled connection structure.

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