Finish turning tool for fixed bracket

Abstract

The utility model discloses a finish turning tool for a fixing support, relates to the technical field of lathe tools, and aims to solve the problem that an existing tool cannot meet the requirement for efficient and thorough turning of a small-size workpiece, the finish turning tool for the fixing support comprises a fixing seat, a tensioning head is installed at one end of the fixing seat, and the tensioning head is installed at the other end of the fixing seat. The tensioning head is arranged in a conical shape, the end, away from the fixing base, of the tensioning head is provided with a cylindrical tensioning part used for installing a workpiece, a pull rod is arranged in the fixing base and the tensioning head in a penetrating mode, and a push block matched with the tensioning part is arranged at one end of the pull rod and used for pushing the tensioning part to be unfolded outwards.

Description

Technical Field

[0001] This utility model relates to the technical field of lathe tooling, specifically to a fixed bracket precision machining tooling. Background Technology

[0002] Precision turning fixtures refer to the specialized process equipment used in the precision turning process of machining. Their core function is to ensure that the workpiece can achieve the high dimensional accuracy, tolerance, and excellent surface roughness required by the drawings.

[0003] Currently, most precision turning fixtures use clamping or clamping methods for positioning, such as precision chucks and mandrels. However, for small cylindrical or open precision parts, both clamping and clamping methods have certain processing limitations. For example, when clamping a small workpiece, the fixture will cover part of the workpiece's surface area, preventing the clamped part from being turned. The clamping position needs to be changed to complete the turning process, and the two clamping processes will seriously reduce turning efficiency. When clamping a small workpiece, the distance between the two clamping fixtures will be greatly reduced, which will reduce the machining space of the cutting tool. During the machining process, interference between the fixture and the cutting tool is likely to occur, resulting in the workpiece surface not being fully machined. Utility Model Content

[0004] To address the aforementioned problem—that existing tooling cannot meet the requirements for efficient and thorough turning of small workpieces—this invention proposes a fixed-support precision turning tooling, comprising a fixed base, a tensioning head mounted at one end of the fixed base, the tensioning head being conical in shape, and a cylindrical tensioning portion at the end of the tensioning head facing away from the fixed base for mounting the workpiece. A pull rod is shared by the fixed base and the tensioning head, and a push block adapted to the tensioning portion is provided at one end of the pull rod for pushing the tensioning portion outward.

[0005] A further feature of this invention is that the tensioning head includes a plurality of tensioning blocks, which together form a conical shape. One end of each tensioning block opposite to the fixed base is also integrally provided with an mounting head, and the plurality of mounting heads together form the tensioning part.

[0006] A further feature of this invention is that the inner cavity of the tensioning part is funnel-shaped, and the push block is also funnel-shaped.

[0007] A further feature of this invention is that: an adjusting block is installed inside the fixed base; one end of the pull rod is fixedly connected to the adjusting block inside the fixed base; a snap-fit ​​groove is provided on the side wall of the adjusting block; a clearance groove is provided on the fixed base corresponding to the snap-fit ​​groove; a U-shaped frame is inserted into the snap-fit ​​groove; the top end of the U-shaped frame extends out of the fixed base from the clearance groove; an adjusting ring is threadedly connected to the fixed base; the adjusting ring is located on the side of the U-shaped frame near the tensioning head; and the adjusting ring abuts against the U-shaped frame.

[0008] The beneficial effects of this utility model are as follows:

[0009] By setting up a tensioning part, it is possible to tension small cylindrical or open workpieces, thereby ensuring that the workpiece is not pressed against the workpiece surface during positioning. This allows the turning process to be completed in one go without the need for secondary clamping. At the same time, after tensioning and positioning, no other tooling is needed on the side of the workpiece away from the tooling, further ensuring the movement space of the cutting tool and avoiding interference between the cutting tool and the tooling, which would affect the turning process. Attached Figure Description

[0010] Figure 1 A reference diagram showing the present invention in use is provided.

[0011] Figure 2 It shows Figure 1 A cross-sectional view along the AA direction.

[0012] Figure 3 A schematic diagram of the structure of this utility model is shown.

[0013] Figure 4 It shows Figure 3 Cross-sectional view along the BB direction.

[0014] Figure 5 A partial sectional view of the mounting base is shown.

[0015] Reference numerals in the attached drawings: 1. Fixed base; 11. Clearance groove; 2. Tensioning head; 21. Tensioning block; 22. Mounting head; 3. Pull rod; 31. Push block; 4. Adjusting block; 41. Snap-fit ​​groove; 5. U-shaped frame; 6. Adjusting ring; 7. Workpiece. 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] refer to Figures 1-5This utility model proposes a fixed bracket precision machining fixture, including a fixed seat 1, which is fixedly connected to a lathe. One end of the fixed seat 1 is fixedly connected to a tension head 2, which is tapered. The end of the tension head 2 facing away from the fixed seat 1 is set as a cylindrical tensioning part for mounting workpiece 7.

[0018] It should be noted that the tooling disclosed in this application is suitable for clamping small-volume cylindrical or open-ended workpieces 7. When in use, the open end of the workpiece 7 is fitted onto the tensioning part, and the workpiece 7 is positioned by the tensioning action of the tensioning head 2.

[0019] A pull rod 3 is installed in both the fixed base 1 and the tensioning head 2. The pull rod 3 is coaxially arranged with both the fixed base 1 and the tensioning head 2. One end of the pull rod 3 located inside the tensioning part is set as a push block 31 that is adapted to the tensioning part, so as to push the tensioning part to unfold outward, thereby achieving the tensioning effect on the workpiece 7. The push block 31 and the pull rod 3 are integrated.

[0020] The tensioning head 2 includes several tensioning blocks 21, which are arranged circumferentially and together form a conical shape. The end of the tensioning block 21 facing away from the fixed base 1 is also integrally provided with an installation head 22, and the several installation heads 22 together form a cylindrical tensioning part.

[0021] The inner cavity of the tensioning part is flared, meaning that the inner surface of each mounting head 22 is an inclined surface, and several inclined surfaces together form a flared shape. The push block 31 is also flared and is adapted to the inner cavity of the tensioning part. When the pull rod 3 is pulled away from the tensioning head 2, the flared push block 31 can push several mounting heads 22 outward. The outwardly unfolded mounting heads 22 will then abut against the inner cavity of the workpiece 7, thereby achieving the purpose of tensioning.

[0022] It should also be noted that an adjusting block 4 is installed inside the fixed base 1. The adjusting block 4 is coaxially arranged with the pull rod 3, and the end of the pull rod 3 away from the push block 31 is threadedly connected to the adjusting block 4. Pushing the adjusting block 4 can achieve the purpose of moving the pull rod 3 accordingly. An annular locking groove 41 is provided on the side wall of the adjusting block 4, and a relief groove 11 is provided on the fixed base 1 corresponding to the locking groove 41. There are two relief grooves 11, and the two relief grooves 11 are symmetrically arranged about the adjusting block 4.

[0023] A U-shaped frame 5 is inserted into the snap-fit ​​groove 41. The U-shaped frame 5 extends into the fixed base 1 through one of the clearance grooves 11 and is inserted into the snap-fit ​​groove 41. It also extends out through the other clearance groove 11. By pushing the U-shaped frame 5, the adjusting block 4 can be moved accordingly. Since the two ends of the U-shaped frame 5 pass through the two clearance grooves 11 respectively, the clearance grooves 11 can also limit the movement of the U-shaped frame 5.

[0024] An adjusting ring 6 is threaded onto the outer wall of the fixed base 1. The adjusting ring 6 is coaxially sleeved on the fixed base 1 and is located on the side of the U-shaped frame 5 near the tensioning head 2. The adjusting ring 6 and the U-shaped frame 5 are abutted against each other. When the adjusting ring 6 is rotated, it can be driven to move along the axial direction of the fixed base 1. When the adjusting ring 6 is driven to move away from the tensioning head 2, the adjusting ring 6 can push the U-shaped frame 5 to move accordingly, thereby driving the pull rod 3 and the push block 31 to move accordingly. The movement of the push block 31 can drive the mounting head 22 to unfold outward, thereby achieving the purpose of tensioning and positioning the workpiece 7. The adjusting ring 6 can achieve the purpose of changing the tension force and relaxing the workpiece 7.

[0025] It should also be noted that the tensioning head 2 is made of a metal material with a certain degree of elasticity, that is, when the pull rod 3 is released, the tensioning block 21 can automatically reset under the action of elasticity.

[0026] In summary, by setting up a tensioning part, this utility model can achieve the purpose of tensioning small cylindrical or open workpieces 7, thereby ensuring that the positioning of workpiece 7 will not cause the surface part of workpiece 7 to be covered, so that the turning process can be completed in one go without secondary clamping. At the same time, after tensioning and positioning, no other tooling is needed on the side of workpiece 7 away from the tooling, further ensuring the movement space of the cutting tool and avoiding interference between the cutting tool and the tooling, which would affect the turning process.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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 fixture for precision machining a fixed bracket, characterized in that: It includes a fixed base (1), one end of which is equipped with a tensioning head (2). The tensioning head (2) is conical, and the end of the tensioning head (2) away from the fixed base (1) is set as a cylindrical tensioning part for installing the workpiece (7). A pull rod (3) is provided in both the fixed base (1) and the tensioning head (2). One end of the pull rod (3) is provided with a push block (31) that is adapted to the tensioning part for pushing the tensioning part to unfold outward.

2. The precision machining fixture for the fixed bracket according to claim 1, characterized in that: The tensioning head (2) includes a plurality of tensioning blocks (21), which together form a conical arrangement. The end of the tensioning block (21) facing away from the fixed base (1) is also integrally provided with an installation head (22), and the plurality of installation heads (22) together form the tensioning part.

3. The precision machining fixture for the fixed bracket according to claim 2, characterized in that: The inner cavity of the tensioning part is flared, and the push block (31) is also flared.

4. The precision machining fixture for the fixed bracket according to claim 1, characterized in that: An adjusting block (4) is also installed inside the fixed base (1). One end of the pull rod (3) is fixedly connected to the adjusting block (4) inside the fixed base (1). A snap-fit ​​groove (41) is provided on the side wall of the adjusting block (4). A clearance groove (11) is provided on the fixed base (1) corresponding to the snap-fit ​​groove (41). A U-shaped frame (5) is inserted into the snap-fit ​​groove (41). The top of the U-shaped frame (5) extends out of the fixed base (1) from the clearance groove (11). An adjusting ring (6) is also threadedly connected to the fixed base (1). The adjusting ring (6) is located on the side of the U-shaped frame (5) near the tension head (2). The adjusting ring (6) abuts against the U-shaped frame (5).

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