Split type lathe tailstock live center convenient to disassemble

Abstract

The utility model provides a split type lathe tailstock live center convenient to disassemble. The split type lathe tailstock live center comprises a tailstock center, a shell, an end cover, a thrust bearing, a radial bearing, a live center base body and a center head. The center head comprises a male center head and a female center head; the tail structures of the male center head and the female center head are the same; the middle parts of the cylinders of the male center head and the female center head are respectively provided with a milled flat structure; a center taper hole is formed in the center of the front end of the live center base body The rear end of the live center base body is rotationally supported and mounted in the shell through a bearing; the tail parts of the male center head and the female center head are respectively provided with a Morse taper shank; the male center head and the female center head are used for being coaxially, detachably and fixedly connected with a center taper hole of a live center base body into a whole through a Morse taper shank. The technical problems that the types of center heads are limited, and the center heads are inconvenient to efficiently and conveniently disassemble and replace are solved; the split type convenient and fast disassembly structure is relatively simple in structure, convenient to machine, ideal in universality, convenient and fast to disassemble and assemble, and beneficial to improving production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of a tailstock live center of an operating and transporting machine tool lathe, and in particular relates to a split type easily disassembled lathe tailstock rotary center. Background Art

[0002] The rotary center we usually use on the tailstock of the lathe is as follows Figure 1 As shown in the figure, it is an integrated structure. When assembled and used, it is combined with the bearing to form Figure 2 The structure shown is installed on the tailstock of the lathe. Figure 1 The rotating center head shown will rotate with the processed parts. And because the hardness of the rotating center head is generally high, collisions and other phenomena often occur during use, resulting in problems such as the top of the rotating center head falling off. At this time, it is necessary to remove it and grind its head. When disassembling and grinding, on the one hand, the bearing loses its accuracy after removal, and the bearing needs to be replaced, which is costly; the bearing and the inner hole of the tailstock center are worn, and after multiple disassembly, the entire tailstock center needs to be replaced; on the other hand, the bearing fits tightly, and disassembly is not convenient, which will affect production efficiency.

[0003] In this regard, under the existing technology, the Chinese patent with publication number CN2125470U proposes a live center design with a replaceable top head, which effectively solves the above problems. However, the patent has the following disadvantages: 1) The structure types of the top head are limited, and only parts with center holes can be processed; 2) When the top head is removed from the cone sleeve, it is inconvenient to clamp and quickly remove it, which also affects the production efficiency. In this regard, the following improved technical solution is proposed. Utility Model Content

[0004] The utility model solves the technical problem of providing a split-type easily disassembled lathe tailstock rotary center, solving the technical problem of limited types of center heads and inconvenient and efficient disassembly and replacement of the center heads.

[0005] The utility model adopts the following technical scheme: a split type easily disassembled lathe tailstock rotary center, comprising a tailstock center, a shell, an end cover, a thrust bearing, a radial bearing, a rotary center base, and a center head; the center head comprises a male center head and a female center head; the tail parts of the male center head and the female center head have the same structure; the middle parts of the columns of the male center head and the female center head are respectively provided with a milling flat structure; the front end center of the rotary center base is provided with a center cone hole; the rear end of the rotary center base is rotatably supported and installed in the shell through a bearing; the tail parts of the male center head and the female center head are respectively provided with Morse taper shanks; the male center head and the female center head are respectively used to be coaxially detachably fixedly connected with the center cone hole of the rotary center base through the Morse taper shanks.

[0006] Among the above technical solutions, as the preferred technical solution of the utility model: an end cover is installed at the front end of the shell; the end cover is formed with an end cover center hole; the rear end of the rotary center base passes through the end cover center hole and is rotatably supported and installed in the shell.

[0007] In the above technical solution, as a further improvement of the utility model: a positioning boss is formed on the forwardly extending outer cylindrical surface of the rotary center base; the positioning boss is positioned and snugly matched with the outer surface of the end cover.

[0008] In the above technical solution, as a further improvement of the utility model: the front end outer cylindrical surface of the rotary center base is provided with a vertebral avoidance structure.

[0009] Among the above technical solutions, as the preferred technical solution of the utility model: the center of the rotary center base is a hollow structure.

[0010] Among the above technical solutions, as the preferred technical solution of the utility model: the Morse taper shank of the top tip is a Morse short taper.

[0011] Among the above technical solutions, as the preferred technical solution of the utility model: the front end of the male tip of the tip is formed with a tip cone tip; the front end of the female tip of the tip is formed with a tip center hole.

[0012] The advantages of this utility model compared with the prior art:

[0013] 1. The utility model includes both male and female tips. The male tip is used for processing parts with center holes, and the female tip is used for processing parts with points at both ends. The processing application scope is effectively increased and the versatility is reasonable.

[0014] 2. The milling flat structure of the top head of the utility model makes it convenient to use tools to quickly clamp the top head, disassemble and replace the top head, which helps to improve production efficiency.

[0015] 3. The utility model adopts a Morse taper shank to disassemble and replace the top head. Compared with the ordinary vertebral structure, it can withstand high thrust and high load, has high matching accuracy, good stability, and is easy to fine-tune.

[0016] 4. The design of the housing and end cover of the utility model is convenient for processing, assembly and disassembly.

[0017] 5. The utility model has a positioning boss formed on the outer cylindrical surface of the rotary center base to prevent the rotary center base from being over-displaced during installation, thus facilitating accurate positioning and assembly of the center base.

[0018] 6. The front end outer cylindrical surface of the rotary center base of the utility model is provided with a cone avoidance structure, which is convenient for freeing up sufficient avoidance space to meet the processing requirements of complex workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the integrated rotary center structure under the prior art;

[0020] Figure 2 It is a schematic diagram of the installation structure of the integrated rotary center on the tailstock of the lathe under the prior art;

[0021] Figure 3 This is a schematic diagram of the structure of the rotary center base of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the anode tip of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the female tip of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the anodic tip of the utility model in the assembly and use state;

[0025] Figure 7 It is a schematic diagram of the structure of the female tip of the utility model in the assembly and use state;

[0026] In the figure: 1-tailstock center, 2-housing, 3-end cover, 4-thrust bearing, 5-radial bearing, 6-rotating center base, 7-center head, 7-1 male center head, 7-2 female center head, 7-3 Morse taper shank, 8-milling flat structure, 601-center taper hole, 602-positioning boss, 603-vertebral avoidance structure. DETAILED DESCRIPTION

[0027] The following will be combined with the attached embodiment of the present utility model Figure 3-7 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] A split type detachable lathe tailstock rotary center, (such as Figure 6 , Figure 7 The tailstock center (as shown) includes a tailstock center 1, a housing 2, an end cover 3, a thrust bearing 4, a radial bearing 5, a rotary center base 6, and a center head 7.

[0029] The structure and function of the prior art described in the background technology are the same: the tailstock center 1 is used for the overall assembly of the utility model on the lathe, and the tailstock center 1 is a Morse cone. The housing 2 box structure supports the rotation installation of the rotary center base 6 through the thrust bearing 4 and the radial bearing 5, and the center head 7 is detachably installed with the rotary center base 6 to achieve efficient and low-cost replacement and processing.

[0030] The improvement of the utility model is that the tip 7 includes a male tip 7-1 and a female tip 7-2. Figure 4 , Figure 5 As shown in the figure, the tail structures of the male tip 7-1 and the female tip 7-2 are the same.

[0031] The utility model comprises a male tip 7-1 and a female tip 7-2. The male tip 7-1 is used for processing parts with a center hole, and the female tip 7-2 is used for processing parts with sharp ends. The processing application scope is effectively increased and the versatility is reasonable.

[0032] The middle part of the column of the male tip 7-1 and the female tip 7-2 is respectively provided with a milling flat structure 8. Compared with the tip 7 without the milling flat structure, the tip 7 of the utility model is convenient to use tools to quickly clamp, disassemble and replace the tip 7, which helps to improve production efficiency.

[0033] The front end of the rotating center base 6 is provided with a central conical hole 601; the rear end of the rotating center base 6 is rotatably supported and installed in the housing 2 through a bearing. Specifically, the bearing includes a thrust bearing 4 and a radial bearing 5, and the assembly and use method is the same as the bearing assembly method in the background technology under the prior art, which will not be repeated.

[0034] The tails of the male and female apex heads 7-1 and 7-2 are respectively provided with Morse taper shanks 7-3. The male and female apex heads 7-1 and 7-2 are respectively used to be coaxially detachably fixedly connected with the center cone hole 601 of the rotary apex base 6 through the Morse taper shanks 7-3. The male and female apex heads 7-1 and 7-2 are used to realize the disassembly, replacement and installation of different types of apex, reduce the repair cost and improve the production efficiency.

[0035] Among them, the design of the Morse taper shank 7-3 allows it to withstand high thrust and high load, which makes it perform well in mechanical processing, especially in occasions where it needs to withstand heavy loads. The clamping accuracy of the Morse taper shank 7-3 is very high, which can reach 0.002mm, which can ensure the processing accuracy and surface quality of the workpiece. Furthermore, since the Morse taper shank 7-3 has a large contact area, its clamping force is evenly distributed, making the workpiece more stable during the processing, and it is not easy to cause accidents such as workpiece sliding and falling off, and has good stability. Not only that, the clamping force of the Morse taper shank 7-3 can be finely adjusted, which is convenient for fine-tuning the workpiece, which makes the processing process more flexible and controllable. Therefore, the utility model adopts the Morse taper shank 7-3 to disassemble and replace the top head 7, which can withstand high thrust and high load compared to the ordinary vertebral structure, has high matching accuracy, good stability, and is easy to fine-tune.

[0036] In the above embodiment, as a preferred embodiment of the utility model: the front end of the housing 2 is installed with an end cover 3; the end cover 3 is formed with an end cover center hole; the rear end of the rotary center base 6 passes through the end cover center hole and is rotatably supported and installed in the housing 2. The design of the housing 2 and the end cover 3 of the utility model facilitates the processing, assembly and disassembly of the box-type structure as a whole. Specifically, the end cover 3 is fixedly connected to the housing 2 by fasteners, which is more convenient for processing, production and assembly than the various parts of the tapered hole end cover structure in the background technology.

[0037] In the above embodiment, as a further improved embodiment of the utility model: the outer cylindrical surface of the rotating center base 6 extending out of the housing end cover is formed with a positioning boss 602; the positioning boss 602 is positioned and fits with the outer surface of the end cover 3, but the fitting surface is smooth and the friction resistance is small, which does not affect the rotation of the center. The positioning boss 602 formed on the outer cylindrical surface of the rotating center base 6 of the utility model prevents the rotating center base 6 from being installed excessively, and facilitates the precise positioning of the rotating center base 6.

[0038] In the above embodiment, as a further improved embodiment of the utility model: the front end outer cylindrical surface of the rotary center base 6 is formed with a cone avoidance structure 603. The cone avoidance structure 603 is convenient for freeing up sufficient avoidance space to meet the avoidance processing requirements of complex workpieces, and at the same time, it is convenient to reduce the counterweight of the top head.

[0039] In the above-mentioned embodiment, as a preferred embodiment of the utility model, the center of the rotary center base 6 is a hollow structure, and similarly, it is convenient to reduce the center counterweight.

[0040] In the above embodiment, as a preferred embodiment of the utility model: the Morse taper shank 7-3 of the top head 7 is a Morse short taper. Due to the design of the short taper, the torque transmitted by the Morse short taper is relatively small, and it is suitable for occasions that do not require a large torque. There are six models of Morse short tapers: B10, B12, B16, B18, B22, and B24, and the appropriate model can be selected according to different needs. The disassembly of the Morse short taper is relatively simple, and repeated disassembly will not affect its accuracy, which can improve work efficiency and convenience in practical applications. As a global standard, the Morse taper is also widely used worldwide, and has good compatibility and interchangeability.

[0041] In the above embodiment, as a preferred embodiment of the utility model: the front end of the male tip 7-1 of the tip 7 is formed with a tip cone tip; the front end of the female tip 7-2 of the tip 7 is formed with a tip center hole. The male tip 7-1 is used to process parts with a center hole, and the female tip 7-2 is used to process parts with tips at both ends. It can be freely selected according to the processing scene, the processing application range is effectively increased, and the versatility is reasonable.

[0042] From the above description, it can be found that the utility model solves the technical problem that the types of top heads are limited and it is inconvenient to disassemble and replace the top heads efficiently and conveniently. The split convenient disassembly structure has a relatively simple structure, convenient processing, ideal versatility, convenient disassembly and assembly, and helps to improve production efficiency.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification and equivalent replacement made within the spirit and principle of the present invention are included in the protection scope of the present invention.

[0044] It should be understood that although the present specification is described according to one implementation mode, the implementation mode does not include only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in this embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A split type detachable lathe tailstock rotary center, comprising a tailstock center (1), a housing (2), an end cover (3), a thrust bearing (4), a radial bearing (5), a rotary center base (6), and a center head (7); characterized in that: The top tip (7) comprises a male top tip (7-1) and a female top tip (7-2); the tail structures of the male top tip (7-1) and the female top tip (7-2) are the same; the middle of the column of the male top tip (7-1) and the female top tip (7-2) are respectively provided with a milling flat structure (8); the center of the front end of the rotary top tip base (6) is provided with a central conical hole (601); the rear end of the rotary top tip base (6) is rotatably supported and installed in the housing (2) through a bearing; the tails of the male top tip (7-1) and the female top tip (7-2) are respectively provided with a Morse taper shank (7-3); the male top tip (7-1) and the female top tip (7-2) are respectively used to be coaxially detachably fixed to the central conical hole (601) of the rotary top tip base (6) through the Morse taper shank (7-3).

2. The split type detachable lathe tailstock rotary center according to claim 1, characterized in that: An end cover (3) is installed at the front end of the shell (2); the end cover (3) is provided with an end cover center hole; the rear end of the rotary center base (6) passes through the end cover center hole and is rotatably supported and installed in the shell (2).

3. The split type detachable lathe tailstock rotary center according to claim 1 or 2, characterized in that: The forwardly extending outer cylindrical surface of the rotary center base (6) is provided with a positioning boss (602); the positioning boss (602) is positioned and snugly matched with the outer surface of the end cover (3).

4. The split type detachable lathe tailstock rotary center according to claim 3, characterized in that: The front end outer cylindrical surface of the rotary top base (6) is provided with a cone avoidance structure (603).

5. The split type detachable lathe tailstock rotary center according to claim 4, characterized in that: The center of the rotary top base (6) is a hollow structure.

6. The split type detachable lathe tailstock rotary center according to claim 1, characterized in that: The Morse taper shank (7-3) of the top tip (7) is a Morse short taper.

7. The split type detachable lathe tailstock rotary center according to claim 1 or 6, characterized in that: The front end of the male tip (7-1) of the tip head (7) is provided with a tip cone tip; the front end of the female tip (7-2) of the tip head (7) is provided with a tip center hole.

Images