Vehicle counting auxiliary tool for machining nitrogen cylinder lower cover workpiece

Abstract

The utility model discloses a numerical control turning auxiliary tool for machining a nitrogen cylinder lower cover workpiece, relates to the technical field of numerical control turning auxiliary tools, and aims to solve the problem that a three-jaw chuck on a numerical control lathe cannot clamp a nitrogen cylinder lower cover. The clamping end of the transition piece is round and used for being clamped with a three-jaw chuck, the end, away from the three-jaw chuck, of the transition piece is coaxially connected with a connecting rod, the connecting rod is coaxially sleeved with a workpiece body, and the end, away from the transition piece, of the connecting rod is connected with a pressing plate.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary tooling for CNC lathes, specifically to an auxiliary tooling for CNC lathes used for machining nitrogen cylinder workpieces. Background Technology

[0002] The nitrogen cylinder bottom cover is an important connecting component in the pressurization assembly of the die-casting machine. Its structure consists of a threaded end for threaded connection with the nitrogen cylinder, and a non-standard flange with mounting holes at the other end. The non-standard flange is usually rectangular.

[0003] Nitrogen cylinder bottom covers are typically machined using CNC lathes. Because one end of the nitrogen cylinder bottom cover is a non-standard flange, this flange serves as the clamping point during thread cutting. A CNC lathe with a self-centering three-jaw chuck cannot clamp the flange; a four-jaw chuck is required. Purchasing a four-jaw chuck not only increases costs but also necessitates calibration for each part during machining, unnecessarily increasing processing time. Utility Model Content

[0004] To address the aforementioned problem—that a three-jaw chuck on a CNC lathe cannot clamp the lower cover of a nitrogen cylinder—this invention proposes a CNC lathe auxiliary tooling for machining the lower cover of a nitrogen cylinder. The tooling includes a transition piece with a circular clamping end for clamping with the three-jaw chuck. A connecting rod is coaxially connected to the end of the transition piece facing away from the three-jaw chuck. The workpiece body is coaxially sleeved on the connecting rod, and a pressure plate is connected to the end of the connecting rod facing away from the transition piece.

[0005] A further feature of this invention is that the transition member has a threaded hole at one end near the connecting rod, and the connecting rod is threadedly connected to the threaded hole.

[0006] A further feature of this invention is that the transition member includes a mandrel, one end of which is circular near the three-jaw chuck for clamping with the three-jaw chuck; a transition plate is coaxially sleeved on the mandrel, and the transition plate is bolted to the mandrel; a threaded hole is provided on the transition plate corresponding to the flange hole of the workpiece body for connecting with the workpiece body.

[0007] A further feature of this invention is that a connecting plate is integrally provided on the mandrel, a threaded hole three is provided on the connecting plate, a countersunk hole is provided on the transition plate corresponding to the threaded hole three, and the transition plate is connected to the connecting plate by bolts engaging with the countersunk hole and the threaded hole three.

[0008] A further feature of this invention is that the pressure plate is coaxially sleeved on the connecting rod, and a nut is threadedly connected to the end of the connecting rod away from the transition piece to press against the pressure plate.

[0009] The beneficial effects of this utility model are as follows:

[0010] By setting a transition piece, it is possible to achieve the purpose of clamping with a three-jaw chuck. Then, by using the cooperation of the connecting rod and the pressure plate, the workpiece body can be clamped. Furthermore, by the cooperation of the threaded hole two with the flange hole on the workpiece body, the workpiece body can be clamped more stably, and the coaxiality of the workpiece can be guaranteed. This avoids the need for repeated dial indicator correction, saves alignment time, and improves processing efficiency. Attached Figure Description

[0011] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0012] Figure 2 The front view of the mandrel is shown.

[0013] Figure 3 The front view of the transition plate is shown.

[0014] Figure 4 An exploded view of this invention is shown.

[0015] Reference numerals: 1. Transition piece; 11. Mandrel; 111. Connecting plate; 1111. Threaded hole three; 112. Threaded hole one; 12. Transition plate; 121. Threaded hole two; 122. Countersunk hole; 2. Three-jaw chuck; 3. Connecting rod; 4. Workpiece body; 41. Flange hole; 5. Pressure plate. Detailed Implementation

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] This utility model proposes a CNC lathe auxiliary tooling for machining nitrogen cylinder lower cover workpieces, including a transition piece 1. The clamping end of the transition piece 1 is set to be circular for clamping with a three-jaw chuck, that is, the clamping end of the transition piece 1 is clamped in the three-jaw chuck 2 of the CNC lathe.

[0018] The end of the transition piece 1 facing away from the three-jaw chuck 2 is coaxially connected to the connecting rod 3. The workpiece body 4 is coaxially sleeved on the connecting rod 3, and one end of the workpiece body 4 abuts against the transition piece 1. A pressure plate 5 is sleeved on the end of the connecting rod 3 facing away from the transition piece 1, and a nut is threaded onto the connecting rod 3. Tightening the nut allows the pressure plate 5 to abut against the workpiece body 4, and thus, under the combined action of the pressure plate 5 and the transition piece 1, the workpiece body 4 can be clamped.

[0019] The transition component 1 includes a mandrel 11, which is a stepped shaft machined from round steel. The end of the mandrel 11 near the connecting rod 3 is provided with a threaded hole 112. The end of the connecting rod 3 near the mandrel 11 is provided with an external thread, and the connecting rod 3 is threadedly connected to the threaded hole 112 through the external thread.

[0020] The end of the mandrel 11 near the three-jaw chuck 2 is round for clamping with the three-jaw chuck 2. A transition plate 12 is coaxially sleeved on the mandrel 11. A connecting plate 111 is integrally provided on the mandrel 11 and is coaxially arranged with the mandrel 11. The connecting rod 3 has three threaded holes 1111, which are evenly arranged around the circumference of the connecting plate 111. The transition plate 12 has a countersunk hole 122 corresponding to the threaded hole 1111. The bolt is passed through the countersunk hole 122 and threadedly connected to the threaded hole 1111, thus achieving the purpose of connecting the transition plate 12 and the connecting plate 111.

[0021] The transition plate 12 has a threaded hole 121 corresponding to the flange hole 41 on the workpiece body 4. By using bolts to pass through the flange hole 41 on the workpiece body 4 and threadedly connect with the threaded hole 121, the workpiece body 4 can be stably and reliably installed on the upper cover of the transition plate 12, and it can also achieve the function of centering the workpiece body 4.

[0022] It should be noted that the mandrel 11 and the transition plate 12 need to be welded together to assemble them into one unit. The specific processing procedure is as follows: the transition plate 12 is fitted onto the mandrel 11 and abuts against the connecting plate 111. Then, bolts are used to thread the transition plate 12 onto the mandrel 11 by passing through the countersunk hole 122 and the threaded hole 1111. The transition plate 12 is then welded onto the mandrel 11. After welding, the outer circles of the mandrel 11 and the transition plate 12 need to be precision machined to ensure their coaxiality.

[0023] In summary, this utility model achieves the purpose of clamping with the three-jaw chuck 2 by setting the transition piece 1. Then, by using the cooperation of the connecting rod 3 and the pressure plate 5, the workpiece body 4 is clamped. Furthermore, by using the cooperation of the threaded hole 121 with the flange hole 41 on the workpiece body 4, the workpiece body 4 can be clamped more stably, and the coaxiality of the workpiece can be guaranteed. This avoids the need for repeated dial indicator correction, saves alignment time, and improves processing efficiency.

[0024] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0025] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0028] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A CNC lathe auxiliary tooling for machining nitrogen cylinder lower cap workpieces, characterized in that: It includes a transition piece (1), the clamping end of which is round for clamping with a three-jaw chuck (2). A connecting rod (3) is coaxially connected to the end of the transition piece (1) away from the three-jaw chuck (2). The workpiece body (4) is coaxially sleeved on the connecting rod (3). A pressure plate (5) is connected to the end of the connecting rod (3) away from the transition piece (1).

2. The CNC lathe auxiliary tooling for machining nitrogen cylinder lower cap workpieces according to claim 1, characterized in that: The transition piece (1) has a threaded hole (112) at one end near the connecting rod (3), and the connecting rod (3) is threadedly connected to the threaded hole (112).

3. The CNC lathe auxiliary tooling for machining nitrogen cylinder lower cap workpieces according to claim 1, characterized in that: The transition piece (1) includes a mandrel (11), the end of which near the three-jaw chuck (2) is round for clamping with the three-jaw chuck (2); a transition plate (12) is coaxially sleeved on the mandrel (11), and the transition plate (12) is bolted to the mandrel (11); a threaded hole (121) is provided on the transition plate (12) corresponding to the flange hole (41) of the workpiece body (4) for connecting with the workpiece body (4).

4. The CNC lathe auxiliary tooling for machining the lower cover of a nitrogen cylinder according to claim 3, characterized in that: The mandrel (11) is integrally provided with a connecting plate (111), the connecting plate (111) is provided with a threaded hole three (1111), the transition plate (12) is provided with a countersunk hole (122) corresponding to the threaded hole three (1111), and the transition plate (12) is connected to the connecting plate (111) by bolts and the cooperation of the countersunk hole (122) and the threaded hole three (1111).

5. The CNC lathe auxiliary tooling for machining nitrogen cylinder lower cap workpieces according to claim 1, characterized in that: The pressure plate (5) is coaxially sleeved on the connecting rod (3), and a nut is threaded to one end of the connecting rod (3) away from the transition piece (1) to press against the pressure plate (5).

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