Cutting machining clamp for outer circle face of thin-wall annular workpiece internally provided with rib plates

Abstract

The utility model provides a thin-wall annular workpiece excircle surface cutting processing clamp with a built-in rib plate, which comprises an inner base, an outer base and a bracket, the inner base and the outer base are fixedly connected together through a supporting rib, one side of the bracket and the outer base are fixedly connected together through a first fastening assembly, and the other side of the bracket and the outer base are fixedly connected through a second fastening assembly. The other side of the bracket is fixedly connected with a rib plate arranged in the thin-wall annular workpiece through a second fastening assembly, the rib plate is in a downwards-bent L shape, and the bracket is in a Z shape around the edge of the outer side of the rib plate. By the adoption of the technical scheme, the end of the bolt is arranged to be in the semi-cylinder shape, the workpiece and the outer base are fixedly connected together through the bracket, when the workpiece is clamped, an operator can tighten the bolt in the limited space in the workpiece in the horizontal direction, and therefore the workpiece can be clamped stably and reliably, and the work efficiency is improved. And the workpiece can be correctly positioned.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting and processing fixtures, in particular to a cutting and processing fixture for the outer cylindrical surface of a thin-walled annular workpiece with internal ribs. Background Art

[0002] Thin-walled annular parts are widely used in various mechanical equipment or devices. When cutting the outer contour of such workpieces, in order to prevent the workpieces from deforming during the processing, it is usually necessary to prepare special fixtures to clamp the workpieces.

[0003] For example, the patent document with the publication number "CN203197622U" discloses a cylinder liner auxiliary positioning fixture device for a vertical boring machine, including a lower support plate and an upper clamping mechanism; the cylinder liner auxiliary positioning fixture device also includes an auxiliary positioning fixture; the auxiliary positioning fixture is a cylindrical structure sleeved on the lower part of the outer cylindrical surface of the upper clamping mechanism; the lower end of the auxiliary positioning fixture has an annular boss extending inward, the upper end of the end face of the annular boss is a circular surface, forming a straightening face for straightening the cylinder liner; the lower end of the end face of the annular boss is a guide chamfer. The use of this patented technical solution realizes the simultaneous radial positioning of the upper and lower parts of the cylinder liner, and improves the machining accuracy of the cylinder liner wall thickness.

[0004] For thin-walled annular workpieces, when their outer cylindrical surfaces need to be cut, in order to avoid obstruction of the outer cylindrical surface of the workpiece by the fixture components, the inner cylindrical surface of the workpiece can only be clamped. However, the internal space of thin-walled annular workpieces is often very limited, which makes it inconvenient to clamp the workpiece or to correctly position the workpiece. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a thin-walled annular workpiece outer cylindrical surface cutting and processing fixture with internal ribs.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a thin-walled annular workpiece outer cylindrical surface cutting and processing fixture with an internal rib plate, comprising an inner base, an outer base and a bracket, the inner base and the outer base are fixed together by supporting ribs, one side of the bracket is fixedly connected to the outer base by a first fastening component, and the other side of the bracket is fixedly connected to the rib plate provided in the thin-walled annular workpiece by a second fastening component, the rib plate is L-shaped and bent downward, and the bracket is Z-shaped and bypasses the outer edge of the rib plate.

[0008] The first fastening assembly includes a plurality of positioning pins.

[0009] The first fastening assembly also includes a plurality of screws, and the positioning pin is arranged between any two adjacent screws.

[0010] The positioning pin is in the shape of a circular body.

[0011] The second fastening assembly includes a bolt, a nut and a washer. The washer is clamped between the rib plate and the nut, and the end of the bolt is in the shape of a semi-cylindrical body.

[0012] The inner base is in the shape of a disc, the outer base is in the shape of a ring, the number of the supporting ribs is multiple, and the number of the brackets is multiple. The multiple supporting ribs and the multiple brackets are arranged at equal intervals around the central axis of the inner base or the outer base.

[0013] The inner base, the outer base or the supporting rib is also fixedly connected with a lifting eye screw.

[0014] The inner base, the outer base and the supporting rib are integrally formed.

[0015] The beneficial effects of the present utility model are as follows: By adopting the technical solution of the present utility model, the end of the bolt is set in the shape of a semi-cylindrical body, and the workpiece is fixedly connected with the outer base through the bracket. When clamping the workpiece, the operator can tighten the bolt horizontally within the limited space inside the workpiece, so that the workpiece is clamped firmly and reliably, and the workpiece is correctly positioned. Description of the Drawings

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the top view of the present utility model.

[0018] In the figure: 1-inner base, 2-outer base, 3-bracket, 4-supporting rib, 5-first fastening assembly, 7-thin-walled annular workpiece, 6-second fastening assembly, 8-rib plate, 9-positioning pin, 10-screw, 11-bolt, 12-nut, 13-washer. Detailed Embodiment

[0019] The technical solution of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0020] As Figure 1 , Figure 2 shown, the present utility model provides a cutting fixture for the outer circular surface of a thin-walled annular workpiece with an internal rib plate, which includes an inner base 1, an outer base 2 and a bracket 3. The inner base 1 and the outer base 2 are fixedly connected together through a supporting rib 4. One side of the bracket 3 is fixedly connected with the outer base 2 by using a first fastening assembly 5, and the other side of the bracket 3 is fixedly connected with a rib plate 8 arranged inside the thin-walled annular workpiece 7 by using a second fastening assembly 6. The rib plate 8 is an L-shaped bent downward, and the bracket 3 is a Z-shaped bypassing the outer edge of the rib plate 8.

[0021] Adopting the technical solution of the present utility model, the end of the bolt is set in the shape of a semi-cylinder, and the workpiece and the outer base are fixedly connected together through the support base. When clamping the workpiece, the operator can tighten the bolt horizontally within the limited space inside the workpiece, so that the workpiece is firmly and reliably clamped and the workpiece is correctly positioned.

[0022] Specifically, the first fastening component 5 includes a plurality of positioning pins 9. The first fastening component 5 further includes a plurality of screws 10, and the positioning pins 9 are arranged between any two adjacent screws 10. Preferably, the positioning pins 9 are in the shape of circular bodies. This is beneficial to reducing the assembly error between the support base and the outer base and laying a foundation for improving the cutting accuracy of the workpiece.

[0023] In addition, the second fastening component 6 includes a bolt 11, a nut 12 and a washer 13. The washer 13 is clamped between the rib plate 8 and the nut 12, and the end of the bolt 11 is in the shape of a semi-cylinder. Thus, on the basis of ensuring reliable clamping of the workpiece, the limited operation space is fully utilized.

[0024] In addition, the inner base 1 is in the shape of a disc, the outer base 2 is in the shape of a ring, the number of the supporting ribs 4 is multiple, and the number of the support bases 3 is multiple. The multiple supporting ribs 4 and the multiple support bases 3 are arranged at equal intervals around the central axis of the inner base 1 or the outer base 2. The inner base 1, the outer base 2 or the supporting ribs 4 are also fixedly connected with the lifting screw 10. The inner base 1, the outer base 2 and the supporting ribs 4 are integrally formed. Preferably, the number of the supporting ribs 4 is 8, and the number of the support bases 3 is 16.

Claims

1. A fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs, characterized in that: The invention comprises an inner base (1), an outer base (2) and a bracket (3), wherein the inner base (1) and the outer base (2) are fixedly connected together via supporting ribs (4), one side of the bracket (3) and the outer base (2) are fixedly connected together using a first fastening assembly (5), and the other side of the bracket (3) and a rib plate (8) provided inside a thin-walled annular workpiece (7) are fixedly connected together using a second fastening assembly (6), wherein the rib plate (8) is in an L-shape bent downward, and the bracket (3) is in a Z-shape bypassing the outer edge of the rib plate (8).

2. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 1, characterized in that: The first fastening assembly (5) comprises a plurality of positioning pins (9).

3. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 2, characterized in that: The first fastening assembly (5) further comprises a plurality of screws (10), and the positioning pin (9) is arranged between any two adjacent screws (10).

4. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs according to any one of claims 2 to 3, characterized in that: The positioning pin (9) is in the shape of a circular body.

5. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 1, characterized in that: The second fastening assembly (6) comprises a bolt (11), a nut (12) and a washer (13); the washer (13) is clamped between the rib plate (8) and the nut (12); and the end of the bolt (11) is in a semi-cylindrical shape.

6. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 1, characterized in that: The inner base (1) is in the shape of a disk, the outer base (2) is in the shape of a ring, the number of the supporting ribs (4) is multiple, the number of the brackets (3) is multiple, and the multiple supporting ribs (4) and the multiple brackets (3) are arranged at equal intervals around the central axis of the inner base (1) or the outer base (2).

7. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 6, characterized in that: The inner base (1), the outer base (2) or the supporting ribs (4) are also fixedly connected with the eye screws (10).

8. The fixture for cutting the outer cylindrical surface of a thin-walled annular workpiece with internal ribs as claimed in claim 1, 6 or 7, characterized in that: The inner base (1), the outer base (2) and the supporting ribs (4) are integrally manufactured.

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