Multi-part clamping eccentric turning tool

Abstract

The utility model discloses a multi-part clamping eccentric turning tool which comprises a base, more than two positioning groove profiles, positioning columns and fastening screws, the positioning groove profiles are circumferentially distributed on the base, the positioning columns are arranged in the positioning groove profiles, the fastening screws are in threaded connection with the positioning columns, and the positioning columns are perpendicular to the base. After the to-be-machined part is installed on the base, the base is fixed to the three-jaw chuck on the lathe, then the to-be-machined part is fixed to the lathe, machining is facilitated, and the problem that at present, eccentric machining needs to be conducted on the part difficultly is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the field of fixtures, and particularly relates to a multi-part clamping eccentric turning tooling. Background Art

[0002] The three-jaw chuck of a horizontal lathe has a self-centering function. Therefore, its main function is to turn the outer circle of a bar stock or the inner hole at the center. It has the advantages of high efficiency and high precision. Compared with milling the outer circle of a bar stock or the inner hole at the center on a machining center, it has the advantages of short machining cycle, low input cost, and simple operation.

[0003] However, in the actual production process, the inner hole or arc of some parts is not at the geometric center of the part, but deviates from the geometric center by a certain distance. If a machining center is used, it will inevitably increase unnecessary machining costs. If the lathe is not equipped with a special fixture, machining cannot be carried out. Therefore, it is necessary to design a special multi-part clamping eccentric turning tooling according to the products to be machined. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a multi-part clamping eccentric turning tooling to solve the problem that it is difficult to perform eccentric machining on parts at present.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] A multi-part clamping eccentric turning tooling includes a base, positioning groove types circumferentially distributed on the base, positioning posts arranged in the positioning groove types, and fastening screws threadedly connected to the positioning posts. The number of the positioning groove types is more than two, and the positioning posts are perpendicular to the base.

[0007] Further, the base is annular.

[0008] Further, the upper end of the positioning groove type and the side facing the center of the base are provided with openings.

[0009] Further, the end cap diameter of the fastening screw is smaller than the diameter of the positioning post.

[0010] Further, an opening pressing plate is arranged on the fastening screw, and the diameter of the opening pressing plate is larger than the diameter of the positioning post.

[0011] Further, positioning bolts corresponding to the positioning groove types are arranged on the outer peripheral surface of the base. The positioning bolts are threadedly connected to the base and one end of each of them extends into the positioning groove type.

[0012] Further, the number of the positioning bolts corresponding to each positioning groove type is two. The two positioning bolts are symmetrically distributed, and one end of each of the two positioning bolts extending into the positioning groove type faces the positioning post.

[0013] The remarkable beneficial effects achieved by this utility model:

[0014] 1. By means of the self - centering clamping base of the three - jaw chuck, the adjustment of the positioning posts and the positioning groove type, this application can achieve the machining of the arc R of different parts. At the same time, this tooling can realize the simultaneous machining of multiple parts, improving the machining efficiency of parts.

[0015] 2. The diameter of the positioning post is smaller than that of the fastening screw, and the setting of the opening pressure plate can facilitate the taking and placing of parts.

[0016] 3. The setting of the positioning bolt can effectively fix different parts under the same positioning groove type. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 is the front - view structural schematic diagram of this utility model;

[0018] Attached Figure 2 is the upward - view sectional structural schematic diagram of this utility model;

[0019] Attached Figure 3 is the structural schematic diagram after the fastening screw and the opening pressure plate of this utility model are removed;

[0020] Attached Figure 4 is the front - view structural schematic diagram of Embodiment 3 of this utility model.

[0021] In the drawings, 1, base; 2, positioning groove type; 3, positioning post; 4, fastening screw; 5, opening pressure plate; 6, positioning bolt; 7, part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits this application and its application or use. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0023] Embodiment 1

[0024] As Figures 1-3 shown, a multi - part clamping eccentric turning tooling includes an annular base 1, positioning groove types 2 circumferentially distributed on the base 1, positioning posts 3 fixedly connected in the positioning groove types 2, and fastening screws 4 thread - connected to the positioning posts 3. The fastening screws 4 and the positioning posts 3 are coaxial. The number of the positioning groove types 2 is more than two, and the positioning posts 3 are perpendicular to the base 1.

[0025] The annular arrangement of the base 1 facilitates the machining of the inner side of the part to be machined.

[0026] In this embodiment, the number of positioning groove types 2 is 12. The 12 positioning groove types 2 are evenly distributed around the center of the base 1. The number of positioning posts 3 and fastening screws 4 is also 12.

[0027] Both the upper end of the positioning groove type 2 and the side facing the center of the base 1 are provided with openings to facilitate the placement and machining of the part to be machined.

[0028] During use, the eccentric part to be machined with holes is inserted onto the positioning post 3 and located within the positioning groove type 2. The part to be machined is limited by the settings of the positioning groove type 2 and the positioning post 3. Then, the fastening screw 4 is connected to the positioning post 3, and the part to be machined is pressed by the fastening screw 4 to prevent the part to be machined from moving during the machining process.

[0029] After the part to be machined is installed on the base 1, the base 1 is fixed on the three-jaw chuck of the lathe, thereby fixing the part to be machined on the lathe, facilitating machining, and effectively solving the problem of difficult eccentric machining of parts at present.

[0030] It should be noted that the arc to be machined on the part to be machined needs to be an arc concentric with the base 1; the base 1 can also be a disc with a circular depression.

[0031] Embodiment 2

[0032] As Figures 1-3 shown, the structure of this embodiment is substantially the same as that of Embodiment 1. This embodiment is further optimized on the basis of Embodiment 1. In order to facilitate the installation and disassembly of the part to be machined more conveniently, in this embodiment, the diameter of the end cap of the fastening screw 4 is smaller than the diameter of the positioning post 3. That is to say, the fastening screw 4 can still install the part to be machined into the positioning groove type 2 without disassembly;

[0033] At the same time, in order to continue to press the part to be machined, an open pressing plate 5 is detachably connected to the fastening screw 4. The diameter of the open pressing plate 5 is larger than the diameter of the positioning post 3. After the part to be machined is installed on the positioning post 3, the open pressing plate 5 is inserted under the end cap of the fastening screw 4, and then the fastening screw 4 is screwed down until the open pressing plate 5 presses the part to be machined in place.

[0034] After the part to be machined is processed, loosen the fastening screw 4 and remove the open pressing plate 5, then the processed part can be removed without disassembling the fastening screw 4, which is convenient to use and improves efficiency.

[0035] Embodiment 3

[0036] AsFigure 4 As shown, the structure of this embodiment is substantially the same as that of Embodiment 2. This embodiment is further optimized on the basis of Embodiment 2. In order to increase the accommodation of different parts by the positioning groove type 2, in this embodiment, a positioning bolt 6 corresponding to the positioning groove type 2 is threadedly connected to the outer peripheral surface of the base 1, and one end of the positioning bolt 6 away from the end cap extends into the positioning groove type 2;

[0037] In this embodiment, the number of positioning bolts 6 corresponding to each positioning groove type 2 is two, and the two positioning bolts 6 are symmetrically distributed. One ends of the two positioning bolts 6 extending into the positioning groove type 2 all face the positioning column 3.

[0038] At present, the technical solution of this application has been pilot-tested, that is, small-scale experiments before large-scale mass production of the product; after the pilot test, user usage research has been carried out on a small scale, and the research results show that the user satisfaction is relatively high; now preparations have begun for the formal production and industrialization of the product (including research on intellectual property risk early warning).

Claims

1. A multi-part clamping eccentric turning tool, characterized by: The invention comprises a base (1), positioning grooves (2) distributed circumferentially on the base (1), positioning columns (3) arranged in the positioning grooves (2), and fastening screws (4) threadedly connected to the positioning columns (3), wherein the number of the positioning grooves (2) is more than two, and the positioning columns (3) are perpendicular to the base (1).

2. The multi-part clamping eccentric turning tool according to claim 1, characterized in that: The base (1) is ring-shaped.

3. The multi-part clamping eccentric turning tool according to claim 1, characterized in that: The upper end of the positioning groove (2) and one side facing the center of the base (1) are provided with openings.

4. The multi-part clamping eccentric turning tool according to claim 1, characterized in that: The diameter of the end cap of the fastening screw (4) is smaller than the diameter of the positioning column (3).

5. The multi-part clamping eccentric turning tool according to claim 4, characterized in that: An open pressure plate (5) is provided on the fastening screw (4), and the diameter of the open pressure plate (5) is greater than the diameter of the positioning column (3).

6. The multi-part clamping eccentric turning tool according to claim 1, characterized in that: The outer peripheral surface of the base (1) is provided with a positioning bolt (6) corresponding to the positioning groove (2); the positioning bolt (6) is threadedly connected to the base (1) and one end of the positioning bolt extends into the positioning groove (2).

7. The multi-part clamping eccentric turning tool according to claim 6, characterized in that: The number of the positioning bolts (6) corresponding to each positioning groove (2) is two, the two positioning bolts (6) are symmetrically distributed, and one end of the two positioning bolts (6) extending into the positioning groove (2) faces the positioning column (3).

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