Off-center sleeve assembly lathe tool structure

Abstract

This utility model provides a lathe fixture structure for an eccentric sleeve assembly, including: an eccentric sleeve assembly and a rotating fixed shaft. The rotating fixed shaft extends transversely through the eccentric sleeve assembly. The rotating fixed shaft is locked to the small end of the eccentric sleeve by a clamping nut. A tapered expansion sleeve inner ring is provided on the inner side of the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The tapered expansion sleeve inner ring is fixed to the rotating fixed shaft by a locking nut. A tapered expansion sleeve outer ring is correspondingly provided on the outer side of the tapered expansion sleeve inner ring. The tapered expansion sleeve outer ring is fixed to the rotating fixed shaft by a fixing nut. A spacer is installed at the left end of the tapered expansion sleeve inner ring at the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The rotating fixed shaft and the large end of the eccentric sleeve are connected by a pin. This eccentric sleeve assembly lathe fixture structure has strong stability and is easy to assemble, ensuring rapid workpiece installation and angular positioning of the eccentric sleeve assembly, and improving the clamping stability of the eccentric sleeve assembly.

Description

Technical Field

[0001] This utility model relates to the field of eccentric sleeve processing technology, specifically to a lathe tooling structure for an eccentric sleeve assembly. Background Technology

[0002] In actual machining, the eccentric sleeve assembly needs to be assembled and fixed on a lathe. The lathe tooling fixture is mainly used to fix the eccentric sleeve assembly on the lathe. Since the eccentric sleeve assembly is a core component in the finishing mill roll box, the machining accuracy requirements for the eccentric sleeve assembly are high, especially the concentricity and parallelism requirements during the machining of the large and small ends of the eccentric sleeve assembly. Multiple adjustments and corrections are required during machining and installation. Therefore, how to achieve rapid workpiece installation and angle positioning of the eccentric sleeve assembly, and improve the stability of the eccentric sleeve assembly clamping, is a technical problem that needs to be solved in this field. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model proposes an eccentric sleeve assembly lathe tooling structure that enables rapid workpiece installation and angular positioning, while also providing strong clamping stability and convenient operation.

[0004] To achieve the above technical solution, this utility model provides an eccentric sleeve assembly lathe tooling structure, including: an eccentric sleeve assembly and a rotating fixed shaft. The rotating fixed shaft passes through the eccentric sleeve assembly laterally. The eccentric sleeve assembly includes a small end of the eccentric sleeve, an intermediate sleeve, and a large end of the eccentric sleeve. The intermediate sleeve connects the small end and the large end of the eccentric sleeve together. The rotating fixed shaft is locked to the small end of the eccentric sleeve by a clamping nut. A tapered expansion sleeve inner ring is provided on the inner side of the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The tapered expansion sleeve inner ring is fixed to the rotating fixed shaft by a locking nut. A tapered expansion sleeve outer ring is correspondingly provided on the outer periphery of the tapered expansion sleeve inner ring. The tapered expansion sleeve outer ring is fixed to the rotating fixed shaft by a fixing nut. A spacer is installed at the left end of the tapered expansion sleeve inner ring at the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The rotating fixed shaft and the large end of the eccentric sleeve are connected by a pin.

[0005] In the above technical solution, during actual operation, it is only necessary to vertically erect and fix the rotating fixed shaft, and then use a crane to lift the eccentric sleeve assembly to be machined. The eccentric sleeve is slowly inserted into the rotating fixed shaft through the shaft hole at the large end. After reaching the fixed position, a locating pin is inserted at the mating point of the large end of the eccentric sleeve. Initial positioning is achieved through the locating pin and the spacer located at the small end of the eccentric sleeve. Next, the fixing nut is tightened using a handle. Under the action of the inner and outer rings of the tapered expansion sleeve, the small end of the eccentric sleeve is clamped, ensuring the concentricity of the shaft holes at both ends of the eccentric sleeve. Then, the clamping nut is tightened, thus completely fixing the eccentric sleeve assembly onto the rotating fixed shaft. Next, the rotating fixed shaft is lifted by a crane, and the eccentric sleeve assembly is moved to the lathe's worktable. The center locating hole on the rotating fixed shaft is then used to fix it to the lathe's rotating shaft for finish machining. After processing, the rotating fixed shaft is lifted by a crane and placed on the spare parts platform. The clamping nut is loosened and the fixing nut is loosened to remove the rotating fixed shaft. Finally, the above actions are repeated to install another eccentric sleeve assembly to be processed.

[0006] Preferably, the right end of the rotating fixed shaft is provided with a pin positioning hole, and the large end of the eccentric sleeve is provided with a pin hole. After the right end of the rotating fixed shaft is inserted into the large end of the eccentric sleeve, the pin positioning hole on the rotating fixed shaft is aligned with the pin hole on the large end of the eccentric sleeve, and then connected by a positioning pin. This facilitates quick positioning and connection between the rotating fixed shaft and the large end of the eccentric sleeve, and is also convenient to operate.

[0007] Preferably, the left and right ends of the rotating fixed shaft are provided with a center positioning hole for connection with the lathe, so that the clamped eccentric sleeve assembly can be quickly connected to the lathe.

[0008] Preferably, a keyway is provided on the right end of the rotating fixed shaft.

[0009] The beneficial effects of the eccentric sleeve assembly lathe tooling structure provided by this utility model are as follows: This eccentric sleeve assembly lathe tooling structure is easy to assemble and has strong clamping stability. In actual operation, it is only necessary to vertically fix the rotating fixed shaft, and then lift the eccentric sleeve assembly to be processed by the crane. The eccentric sleeve is slowly inserted into the rotating fixed shaft through the shaft hole at the large end of the eccentric sleeve. After reaching the fixed position, the positioning pin that mates with the large end of the eccentric sleeve is inserted. The positioning pin and the spacer located at the small end of the eccentric sleeve achieve preliminary positioning. Then, the fixing nut is tightened with the handle. Under the action of the inner and outer rings of the tapered expansion sleeve, the small end of the eccentric sleeve is clamped, while ensuring the concentricity of the shaft holes at the large and small ends of the eccentric sleeve. Then, the clamping nut is tightened, so that the eccentric sleeve assembly is completely fixed on the rotating fixed shaft. The operation is very convenient, and it can ensure the rapid workpiece installation and angle positioning of the eccentric sleeve assembly, and improve the clamping stability of the eccentric sleeve assembly. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the three-dimensional structure assembly of this utility model.

[0011] Figure 2 This is a cross-sectional view of the present invention.

[0012] In the diagram: 1. Rotary fixed shaft; 2. Compression nut; 3. Spacer; 4. Locking nut; 5. Inner ring of tapered expansion sleeve; 6. Outer ring of expansion sleeve; 7. Fixed nut; 8. Keyway; 9. Center positioning hole; 100. Eccentric sleeve; 101. Small end of eccentric sleeve; 102. Intermediate sleeve; 103. Large end of eccentric sleeve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] Example: A lathe tooling structure for an eccentric sleeve assembly.

[0015] Reference Figures 1 to 2 As shown, an eccentric sleeve assembly lathe tooling structure includes: an eccentric sleeve assembly 100 and a rotating fixed shaft 1. The rotating fixed shaft 1 extends transversely through the eccentric sleeve assembly 100. The eccentric sleeve assembly 100 includes a small eccentric sleeve end 101, an intermediate sleeve 102, and a large eccentric sleeve end 103. The intermediate sleeve 102 connects the small eccentric sleeve end 101 and the large eccentric sleeve end 103 together. The left and right ends of the rotating fixed shaft 1 are provided with center positioning holes 9 for connection with the lathe. The right end of the rotating fixed shaft 1 is provided with a keyway 8 to facilitate the quick docking of the clamped eccentric sleeve assembly 100 with the lathe.

[0016] The rotating fixed shaft 1 and the small end 101 of the eccentric sleeve are locked together by a clamping nut 2. The clamping nut 2 is used to clamp the eccentric sleeve assembly 100 after it is positioned with the rotating fixed shaft 1, so that the eccentric sleeve assembly 100 will not move left or right relative to the rotating fixed shaft 1. A tapered expansion sleeve inner ring 5 is provided on the inner side of the joint between the rotating fixed shaft 1 and the small end 101 of the eccentric sleeve. The tapered expansion sleeve inner ring 5 is fixed on the rotating fixed shaft 1 by a locking nut 4. A tapered expansion sleeve outer ring 6 is provided on the outer periphery of the tapered expansion sleeve inner ring 5. The tapered expansion sleeve outer ring 6 is fixed on the rotating fixed shaft 1 by a fixing nut 7. In actual installation, the tapered expansion sleeve inner ring 5 and the tapered expansion sleeve outer ring 6 are used to make the expansion sleeve outer ring 6 expand smoothly around the center of the rotating fixed shaft 1, thereby achieving the effect of clamping the small end 101 of the eccentric sleeve. This can improve the concentricity and parallelism of the large and small ends of the eccentric sleeve assembly 100 during the processing.

[0017] The rotating fixed shaft 1 and the small end 101 of the eccentric sleeve are connected at the left end of the inner ring 5 of the conical expansion sleeve. The spacer 3 is used for positioning and adjusting the distance when installing the eccentric sleeve assembly 100. The right end of the rotating fixed shaft 1 is provided with a pin positioning hole, and the large end 103 of the eccentric sleeve is provided with a pin hole. After the right end of the rotating fixed shaft 1 is inserted into the large end 103 of the eccentric sleeve, the pin positioning hole on the rotating fixed shaft 1 is aligned with the pin hole on the large end 103 of the eccentric sleeve and then connected by a positioning pin. This facilitates quick positioning and connection between the rotating fixed shaft 1 and the large end 103 of the eccentric sleeve, and is also easy to operate.

[0018] This eccentric sleeve assembly lathe tooling structure is easy to assemble and has strong clamping stability. By rotating the fixed shaft 1 and the inner ring 5 and outer ring 6 of the tapered expansion sleeve, precision machining can be performed while ensuring 100% concentricity of the eccentric sleeve assembly. In actual operation, simply erect and fix the rotating fixed shaft 1 vertically, then lift the eccentric sleeve assembly 100 to be processed using a crane, and slowly insert it into the rotating fixed shaft 1 through the shaft hole of the large end 103 of the eccentric sleeve. After reaching the fixed position, insert the positioning pin that mates with the large end 103 of the eccentric sleeve. Initial positioning is achieved through the positioning pin and the spacer 3 located at the small end 101 of the eccentric sleeve. Then, tighten the fixing nut 7 with the handle. Under the action of the inner ring 5 and the outer ring 6 of the tapered expansion sleeve, the small end 101 of the eccentric sleeve is clamped, while ensuring the concentricity of the shaft holes of the large and small ends of the eccentric sleeve. Then, tighten the clamping nut 2, so that the eccentric sleeve assembly 100 is completely fixed on the rotating fixed shaft 1. The operation is very convenient, and it can ensure the rapid workpiece installation and angle positioning of the eccentric sleeve assembly 100, improving the stability of the clamping of the eccentric sleeve assembly 100. Next, use a crane to lift the rotating fixed shaft 1 and move the eccentric sleeve assembly 100 onto the lathe's worktable. Connect the rotating fixed shaft 1 to the lathe's rotating shaft fixing 1 using the center positioning hole 9 on the rotating fixed shaft 1 for precision machining. After machining, use a crane to lift the rotating fixed shaft 1 and place it on the spare parts platform. Loosen the clamping nut 2 and loosen the fixing nut 7 to remove the rotating fixed shaft 1. Finally, repeat the above steps to install the other eccentric sleeve assembly 100 to be machined.

[0019] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiment and the accompanying drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A lathe tooling structure for an eccentric sleeve assembly, characterized in that... include: An eccentric sleeve assembly and a rotating fixed shaft are provided. The rotating fixed shaft extends laterally through the eccentric sleeve assembly. The eccentric sleeve assembly includes a small end, an intermediate sleeve, and a large end. The intermediate sleeve connects the small end and the large end of the eccentric sleeve. The rotating fixed shaft is locked to the small end of the eccentric sleeve by a clamping nut. A tapered expansion sleeve inner ring is provided on the inner side of the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The tapered expansion sleeve inner ring is fixed to the rotating fixed shaft by a locking nut. A tapered expansion sleeve outer ring is provided on the outer periphery of the tapered expansion sleeve inner ring. The tapered expansion sleeve outer ring is fixed to the rotating fixed shaft by a fixing nut. A spacer is installed at the left end of the tapered expansion sleeve inner ring at the joint between the rotating fixed shaft and the small end of the eccentric sleeve. The rotating fixed shaft and the large end of the eccentric sleeve are connected by a pin.

2. The lathe tooling structure for the eccentric sleeve assembly as described in claim 1, characterized in that: The right end of the rotating fixed shaft is provided with a pin positioning hole, and the large end of the eccentric sleeve is provided with a pin hole. After the right end of the rotating fixed shaft is inserted into the large end of the eccentric sleeve, the pin positioning hole on the rotating fixed shaft is aligned with the pin hole on the large end of the eccentric sleeve and then connected by a positioning pin.

3. The lathe tooling structure for the eccentric sleeve assembly as described in claim 1, characterized in that: The rotating fixed shaft has a center positioning hole on both the left and right ends of the shaft head for connection with the lathe.

4. The lathe tooling structure for the eccentric sleeve assembly as described in claim 1, characterized in that: A keyway is provided on the right end of the rotating fixed shaft.

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