Machining and positioning tool for inner ring and outer ring of annular workpiece

Abstract

The utility model relates to an annular workpiece inner and outer ring machining positioning tool which comprises a chuck, an annular top ring used for being connected to an inner ring of an annular workpiece in an abutting mode is coaxially arranged on one side of the chuck in a protruding mode, and a plurality of inner screw holes are evenly distributed in the chuck in the top ring in an annular mode. A plurality of outer screw holes are evenly distributed in the chuck outside the top ring, outer bolts penetrate through the outer clamping plates to enable the inner ends of the outer clamping plates to abut against the outer side of the annular workpiece in the radial direction and clamp the annular workpiece in the axial direction, and a machining receding hole is formed in the center of the chuck in a penetrating mode. The annular workpiece inner and outer ring machining positioning tool is simple in structure, the risk of clamping deformation is effectively avoided, and clamping is stable and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of annular workpiece inner and outer ring machining positioning tool. BACKGROUND

[0002] In the field of casting processing, it is often necessary to rework the thin annular workpiece, machining threads, grooves and holes, etc. However, the thin product is easily deformed by direct clamping with clamps, resulting in low yield and insufficient clamping stability, which needs to be improved. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model solves the technical problem to provide an annular workpiece inner and outer ring machining positioning tool, which is not only reasonable in structure, but also convenient and fast.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: an annular workpiece inner and outer ring machining positioning tool, comprising a chuck, a top ring in the form of a ring is coaxially protruding from one side of the chuck for abutting against the inner ring of the annular workpiece, a plurality of internal screw holes are uniformly distributed on the chuck inside the top ring, and the internal clamping plate is pressed into the internal screw holes by internal bolts, so that the internal clamping plate is pressed against the axial end surface of the annular workpiece, a plurality of external screw holes are uniformly distributed on the chuck outside the top ring, and the external clamping plate is clamped axially by external bolts, a machining clearance hole is formed through the center of the chuck.

[0005] Further, an adjusting screw hole is formed through the internal clamping plate, and an adjusting screw is screwed into the adjusting screw hole, the end of the adjusting screw abuts against the axial end surface of the annular workpiece.

[0006] Further, a pad is fixed to one end of the adjusting screw for abutting against the axial end surface of the annular workpiece.

[0007] Further, a strip-shaped hole is formed in the external clamping plate for radial adjustment, or the strip-shaped hole can be omitted, i.e. different types of external clamping plates are used for different annular workpieces, so that the clamping is more stable.

[0008] Further, the inner end of the external clamping plate is arc-shaped for abutting against the outer circumferential side of the annular workpiece, and a limiting protrusion is protruding from the inner end of the external clamping plate for radially abutting against the groove of the annular workpiece.

[0009] Compared with the prior art, the utility model has the following advantages: by step clamping of the internal clamping plate and the external clamping plate, the thin annular workpiece can be effectively prevented from being damaged and deformed while being clamped stably, and the clamping is more convenient and stable.

[0010] The utility model will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 for Figure 1 Cross-sectional view of CC;

[0013] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0014] Figure 4 for Figure 1 Cross-sectional view of the middle DD;

[0015] Figure 5 for Figure 4 A magnified schematic diagram of B.

[0016] In the figure: 1-chuck, 2-annular workpiece, 3-top ring, 4-inner screw hole, 5-inner bolt, 6-inner clamping plate, 7-outer screw hole, 8-outer bolt, 9-processed clearance hole, 10-adjusting screw hole, 11-adjusting screw, 12-shim, 13-strip hole, 14-limiting protrusion, 15-outer thread, 16-ring groove, 17-outer clamping plate. DETAILED DESCRIPTION

[0017] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0018] like Figures 1-5 As shown, the tooling for processing and positioning the inner and outer rings of the annular workpiece includes a chuck 1, and a top ring 3 in the shape of an annular ring is coaxially protruded on one side of the chuck for being connected to the inner ring of the annular workpiece 2. Six groups of inner screw holes 4 are evenly distributed in an annular manner on the chuck inside the top ring (only three groups are drawn in the figure), and the inner bolts 5 pass through the inner clamping plate 6 and are screwed into the inner screw holes to press the inner clamping plate onto the axial end face of the annular workpiece. Three groups of outer screw holes 7 are evenly distributed on the chuck outside the top ring, and the outer bolts 8 pass through the outer clamping plate 17 to radially connect the inner end of the outer clamping plate to the outer side of the annular workpiece and clamp it axially. A processing clearance hole 9 is opened through the center of the chuck, and the outer clamping plate and the inner clamping plate generally do not work at the same time, that is, the inner clamping plate is removed when the outer clamping plate is clamped, and the outer clamping plate is removed when the inner clamping plate is clamped, so as to ensure that the processing of different positions of the annular workpiece is not interfered with.

[0019] In the embodiment of the present invention, due to the thin nature of the annular workpiece, that is, after the inner bolt is rotated to the bottom, the inner clamping plate can only be connected to the axial end of the top ring, and is restricted by the top ring and cannot further connect to the thinner annular workpiece. At this time, it is necessary to rotate the screw and adjust the position of the screw to further adapt to the thinner annular workpiece, that is, an adjusting screw hole 10 is opened through the inner clamping plate and an adjusting screw 11 is screwed into the adjusting screw hole, and the end of the adjusting screw is connected to the axial end face of the annular workpiece.

[0020] In the embodiment of the utility model, the adjusting screw one end is equipped with the gasket 12 for top connection annular work piece axial end face.

[0021] In the embodiment of the utility model, the outer clamping plate is equipped with the strip hole 13 of being favorable to radial adjustment, also can not set up strip hole, namely corresponding different annular work piece adapts different model outer clamping plate, make clamping more stable.

[0022] In the embodiment of the utility model, the outer clamping plate inner end is arc-shaped to top in annular work piece outer circumferential side, the outer clamping plate inner end projects and is limited to the radial top in annular work piece's ring groove in convex part 14.

[0023] The working principle of the embodiment of the utility model: when working, first, the annular work piece is sleeved on the outer periphery of the top ring, the position of the adjusting screw is adjusted, then the inner bolt is screwed to press the gasket of the inner clamping plate on the annular work piece, after three groups of inner clamping plates complete clamping of the annular work piece, the chuck is fixed to the machining station, the machining of the outer end face of the annular work piece can be carried out, such as machining external thread 15 and ring groove 16, after the machining of the outer periphery is completed, the outer screw rod can be rotated to bring the outer clamping plate, the outer clamping plate is first inserted into the machined ring groove in the radial direction, and axial fastening is completed, after fixing, the inner bolt and the inner clamping plate can be removed, at this time, further machining of the axial end face and the central shaft hole of the annular work piece can be carried out, the clamping mode will not cause damage and deformation to the thin annular work piece, and is more convenient and stable.

[0024] The utility model is not limited to the above-mentioned best implementation, and anyone can derive other various forms of annular work piece inner and outer ring machining positioning tool under the inspiration of the utility model. Any equal change and modification made in the patent application range of the utility model should belong to the coverage range of the utility model.

Claims

1. The tooling for machining and positioning the inner and outer rings of annular workpieces is characterized by: The chuck comprises a chuck plate, one side of which projects coaxially with a ring-shaped top ring for abutting against the inner ring of a ring-shaped workpiece, a plurality of inner screw holes are uniformly distributed on the chuck plate inside the top ring, and an inner clamping plate is pressed against the axial end surface of the ring-shaped workpiece by screwing an inner screw bolt into the inner screw holes.

2. The positioning tool for machining inner and outer rings of ring-shaped workpieces according to claim 1, characterized in that: An adjusting screw hole is formed through the inner clamping plate, and an adjusting screw is screwed into the adjusting screw hole, with the end of the adjusting screw abutting against the axial end surface of the ring-shaped workpiece.

3. The positioning tool for machining inner and outer rings of ring-shaped workpieces according to claim 2, characterized in that: One end of the adjusting screw is fixedly provided with a pad for abutting against the axial end surface of the ring-shaped workpiece.

4. The ring-shaped workpiece inner and outer ring machining positioning tooling fixture according to claim 1, characterized in that: A strip-shaped hole is formed in the outer clamping plate to facilitate radial adjustment.

5. The ring-shaped workpiece inner and outer ring machining positioning tooling fixture according to claim 1, characterized in that: The inner end of the outer clamping plate is arc-shaped to abut against the outer circumferential side of the ring-shaped workpiece, and a limiting protrusion is formed on the inner end of the outer clamping plate to radially abut against the ring groove of the ring-shaped workpiece.

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