Clamping device for turning hard alloy pressed blank

Abstract

The utility model discloses a clamping device for turning a hard alloy compact, which comprises a chuck arranged on a numerical control vertical lathe, the center of the chuck is communicated with an air pipe, the air pipe is connected with an external vacuum generator, an aluminum sucker is coaxially arranged on the chuck, the aluminum sucker is T-shaped, and the air pipe is connected with an external vacuum generator. A second suction cup vacuumizing opening and a third suction cup vacuumizing opening are formed in the lower portion of the T-shaped aluminum suction cup, an annular inner hollow cavity is formed in the upper portion of the T-shaped aluminum suction cup, a first suction cup vacuumizing opening is formed below the inner hollow cavity, and a plurality of circles of annular grooves are evenly distributed in the upper surface of the aluminum suction cup. Threaded holes used for opening and closing the air channels are pre-formed in the annular grooves, screws are detachably arranged in the threaded holes, and the annular grooves are provided with annular selectable silica gel sealing rings in a matched mode. Through the optimized and improved design of the product disclosed by the utility model, the clamping times are effectively reduced, the processing is more convenient, and the beneficial effects of saving the production time and improving the production efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to turning clamp technical field, concretely related to a kind of clamping device for hard alloy compact turning. BACKGROUND

[0002] Hard alloy compact density is unevenly distributed, and powder particles are also in mechanical engagement state, and the strength is very low. When processing, it is easy to produce angle, crack, and compact is scrapped during operation in the processing process. For the existing processing of the outer diameter greater than 300 millimeters, the thickness of the outer diameter large thickness thin ring product is less than 30 millimeters, the product is placed on the milling machine workbench, because the tool is prevented from being hurt to the machine tool workbench during processing, so a blank of the same brand and similar specification is needed between the product and the table, so that complete processing can be realized in one process, and the product is usually pressed by combined pressing block to prevent loosening during processing. The above processing method of prior art makes the processing become cumbersome, increases the clamping times, wastes time and reduces the efficiency. Moreover, by using this method, the trajectory of the milling machine is concentric circle length, distance is long, and efficiency is low. With the change of customer product specification, multiple brand and multiple specification pads need to be prepared on site, which causes material waste and increases the difficulty of on-site management.

[0003] In addition, the existing patent number: CN202123105427.2 adopts a circular vacuum chuck, which is adsorbed on the glass product. The chuck ring increases the contact area with the glass product, increases the stress area of the glass product, and makes the glass product not easy to break during processing.

[0004] However, the structure in patent number: CN202123105427.2 is to increase the contact surface between the chuck and the product. From the structure, it can only be used for solid flat products, and hollow products cannot be adsorbed. The product outer diameter is greater than the chuck outer diameter. For the circular ring product with hole in the middle, this structure cannot realize negative pressure vacuum adsorption. In general, the less the contact surface between the product and the chuck, the more suitable it is. At present, a large part of the product structure is non-standard customization, and the outer diameter and inner hole specification vary. The current clamping device cannot meet the small contact area of the chuck, and the same clamp cannot be applied to various product specifications. UTILITY MODEL CONTENTS

[0005] In view of the above technical problems in the related art, the utility model provides a clamping device for hard alloy compact turning, which can overcome the above shortcomings of the prior art.

[0006] To achieve the above technical purpose, the technical scheme of the utility model is as follows:

[0007] A clamping device for hard alloy compact blank turning machining;

[0008] The clamping device for hard alloy compact blank turning machining includes a chuck provided on a numerical control vertical lathe, a gas pipe is provided in the center position of the chuck and connected with an external vacuum generator, an aluminum suction disc is coaxially provided on the chuck, the aluminum suction disc is T-shaped, a second suction disc vacuum port and a third suction disc vacuum port are respectively provided on the lower side and bottom of the T-shaped aluminum suction disc, a circular ring-shaped inner hollow chamber is provided in the upper part of the T-shaped aluminum suction disc, a first suction disc vacuum port is provided below the inner hollow chamber, a plurality of annular grooves are uniformly distributed on the upper surface of the aluminum suction disc (10), a threaded hole for opening and closing the air passage is provided on the annular groove, a screw is detachably provided in the threaded hole, and the annular groove is adaptively provided with a ring-shaped optional silica gel sealing ring.

[0009] Further, the silica gel sealing ring includes a first silica gel sealing ring and a second silica gel sealing ring, and the first silica gel sealing ring and the second silica gel sealing ring are both higher than the annular groove by 2-3 mm.

[0010] Further, the diameter of the first silica gel sealing ring is smaller than the diameter of the outer circle of the finished product ring, and the diameter of the second silica gel sealing ring is larger than the diameter of the inner hole of the finished product ring.

[0011] Further, the lower part of the T-shaped aluminum suction disc is a suction disc clamping position, the diameters of the annular grooves increase from inside to outside, and the annular grooves are concentrically arranged on the upper surface of the aluminum suction disc.

[0012] Further, the first silica gel sealing ring and the second silica gel sealing ring are provided with a workpiece to be machined on the upper surface.

[0013] Further, the first silica gel sealing ring, the second silica gel sealing ring, the chuck, the aluminum suction disc and the workpiece to be machined are longitudinally coaxially arranged.

[0014] Further, the numerical control vertical lathe includes an electric tool holder, a vertical lathe guide rail, a vertical lathe base and a tool, and the tool is fixedly arranged on the electric tool holder.

[0015] Further, the tool includes an inner hole tool for machining an inner hole and an outer circle tool for turning an outer circle.

[0016] The utility model discloses the beneficial effect has: through the optimization improvement design of the utility model product to make the clamping frequency effectively reduces, makes the processing more convenient, and further reaches the beneficial effect of saving production time, improve production efficiency, in addition, the utility model product is more suitable, and the same fixture is suitable for various product specifications, satisfies the production demand of the non - standard customization annular product of the various diameter and hole specification, improves the versatility of the clamping device, saves production cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0018] Fig. 1 It is the processing state schematic drawing of the clamping device for hard alloy compacting blank lathing processing according to the utility model embodiment;

[0019] Fig. 2 It is the aluminum suction disc overall structure section view of the clamping device for hard alloy compacting blank lathing processing according to the utility model embodiment;

[0020] In the drawing: 1, first silica gel sealing ring;2, suction disc body;3, second silica gel sealing ring;4, first suction disc vacuum port;5, second suction disc vacuum port;6, suction disc clamping position;7, third suction disc vacuum port;8, chuck;9, air pipe;10, aluminum suction disc;11, electric tool rest;12, to be processed compact;13, vertical lathe guide;14, vertical lathe base;15, lathe tool. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiment of the utility model will be clearly and completely described in the following with the drawings in the embodiment of the utility model, obviously, the described embodiment only is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art belong to the range of the utility model protection.

[0022] It should be understood that, in the description of the embodiments of the present application, the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "several" is two or more, unless otherwise explicitly specified.

[0023] As shown in Figs. 1-2 A clamping device for hard alloy compact turning processing according to an embodiment of the present application, comprising a chuck 8 arranged on a numerical control vertical lathe, a gas pipe 9 is arranged in the center of the chuck 8, the gas pipe 9 is connected with an external vacuum generator, an aluminum suction cup 10 is coaxially arranged on the chuck 8, the aluminum suction cup 10 is T-shaped, a second suction cup vacuum port 5 and a third suction cup vacuum port 7 are arranged on the lower side and bottom surface of the T-shaped aluminum suction cup 10 respectively, a circular annular inner cavity is arranged in the upper part of the T-shaped aluminum suction cup 10, a first suction cup vacuum port 4 is arranged below the inner cavity, a plurality of annular grooves are uniformly arranged on the upper surface of the aluminum suction cup 10, a threaded hole for opening and closing the air passage is arranged in each annular groove, a screw is detachably arranged in the threaded hole, and a ring-shaped optional silica gel sealing ring is adaptively arranged in each annular groove.

[0024] In a specific embodiment, the silica gel sealing ring comprises a first silica gel sealing ring 1 and a second silica gel sealing ring 3, and the first silica gel sealing ring 1 and the second silica gel sealing ring 3 are both higher than the annular groove 2 by 3mm.

[0025] In a specific embodiment, the diameter of the first silica gel sealing ring 1 is smaller than the diameter of the finished product circular ring outer circle, and the diameter of the second silica gel sealing ring 3 is larger than the diameter of the finished product circular ring inner hole.

[0026] The clamping device for hard alloy compact blank turning machining according to the embodiment of the utility model, in a specific embodiment, the lower part of the T-shaped aluminum suction cup 10 is a suction cup clamping position 6, the diameters of the annular grooves increase from inside to outside in turn, and the annular grooves are concentrically arranged with the upper surface of the aluminum suction cup (10).

[0027] The clamping device for hard alloy compact blank turning machining according to the embodiment of the utility model, in a specific embodiment, the first silica gel sealing ring 1 and the second silica gel sealing ring 3 are attached above the to-be-processed compact 12.

[0028] The clamping device for hard alloy compact blank turning machining according to the embodiment of the utility model, in a specific embodiment, the first silica gel sealing ring 1, the second silica gel sealing ring 3, the chuck 8, the aluminum suction cup 10 and the to-be-processed compact 12 are longitudinally coaxially arranged.

[0029] The clamping device for hard alloy compact blank turning machining according to the embodiment of the utility model, in a specific embodiment, the numerical control vertical lathe comprises an electric tool rest 11, a vertical lathe guide rail 13, a vertical lathe base body 14 and a turning tool 15, and the turning tool 15 is fixedly arranged on the electric tool rest 11.

[0030] The clamping device for hard alloy compact blank turning machining according to the embodiment of the utility model, in a specific embodiment, the turning tool 15 comprises an inner hole turning tool for machining an inner hole and an outer circle turning tool for turning an outer circle.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the above technical scheme of the utility model is described in detail below through a specific use mode.

[0032] In specific use, according to the clamping device for hard alloy compact blank turning processing, the gas pipe 9 controlled by the external vacuum generator is connected to the center position of the chuck 8, the second suction disc vacuum port 5 and the third suction disc vacuum port 7 on the lower bottom plate side and the bottom surface of the aluminum suction disc 10 are vacuumized, the upper surface is provided with a plurality of annular grooves, the plurality of annular grooves can be suitable for multi-specification change adjustment, the first silica gel sealing ring 1 and the second silica gel sealing ring 3 suitable for the annular grooves are customized, the gasket is 2-3mm higher than the annular groove, the gasket can realize sealing and product through processing without damaging the aluminum suction disc 10, the inner circle sealing ring is greater than the inner hole of the finished product ring (the processing inner hole does not interfere), the outer circle sealing ring is smaller than the outer circle of the finished product ring (the processing outer circle does not interfere), the ring product with the corresponding size range is concentrically placed on the top of the first silica gel sealing ring 1 and the second silica gel sealing ring 3, the annular groove is provided with a preformed threaded hole (realizing the opening and closing of the air duct of products of different specifications), the screws in the coverage range of the finished product are removed, the air duct is kept smooth, and the locking screws outside the non-product coverage range are removed. The vacuum generator is controlled by a manual switch, a vacuum negative pressure environment is formed at the bottom of the product, and the product is fixed by adsorption. The product is seated on the annular first silica gel sealing ring 1 and the second silica gel sealing ring 3, and the numerical control vertical lathe chuck 8 rotates. The turning tool 15 is fixed on the tool holder 11, and the motion trajectory is output through numerical control code, and the external turning is performed. When the inner hole is processed, the tool holder 11 rotates to replace the inner hole turning tool, and the inner hole is processed. Because the annular first silica gel sealing ring 1 and the second silica gel sealing ring 3 are 2-3mm higher than the annular groove 2, the product can realize complete through processing, and the aluminum suction disc 10 need not be worried about being damaged.

[0033] In a specific embodiment, a hard alloy to be processed compact 12 has an outer diameter of φ403mm, an inner hole of φ233.12mm, and a thickness of 22.5mm, and is batch produced by the vacuum suction disc clamp, one inner hole turning tool and one external turning tool are clamped on the numerical control vertical lathe, the turning tool 15 adopts a polycrystalline diamond compact, the processing speed is 250r / min, the axial feeding speed is 60mm / min, and the radial cutting depth is 2.5mm, the to-be-processed compact 12 is clamped and turned by the clamp and the turning tool, the obtained product has no cracks on the surface, the surface roughness is less than 1.6μm, and the coaxiality error is controlled to be less than 0.05mm, which indicates that the processing method can obtain a high-precision hard alloy blank ring meeting the design requirements. The vacuum suction disc is used for producing hard alloy blank ring products on the vertical lathe.

[0034] In summary, by means of the above technical scheme of the utility model, through the optimization and improvement design of the utility model product, the clamping frequency is effectively reduced, the processing is more convenient, and the beneficial effects of saving production time and improving production efficiency are achieved; in addition, the utility model product has stronger applicability, a same clamp is suitable for various product specifications, the production needs of various non-standard customized ring products in outer diameter and inner hole specifications are met, and the versatility of the clamping device is improved, and the production cost is saved.

[0035] The above merely describes preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clamping device for turning of cemented carbide compacts, c h a r a c t e r i s e d in that The utility model relates to a chuck (8) is arranged on numerical control vertical lathe, the central position of chuck (8) is connected with air pipe (9) and is equipped with, air pipe (9) is connected with outside vacuum generator, chuck (8) is equipped with aluminium sucking disc (10) coaxially, aluminium sucking disc (10) is T-shaped, and the lower side and bottom of T-shaped aluminium sucking disc (10) are equipped with second sucking disc vacuum port (5) and third sucking disc vacuum port (7) respectively, and the upper portion of T-shaped aluminium sucking disc (10) is equipped with annular inner hollow chamber, and the lower portion of annular inner hollow chamber is equipped with first sucking disc vacuum port (4), and the upper surface of aluminium sucking disc (10) is evenly equipped with a plurality of annular grooves, and the annular groove is equipped with screw thread hole for airway opening and closing, and the screw thread hole is detachably equipped with screw, and the annular groove is adaptively equipped with annular optional silica gel sealing ring.

2. A clamping device for turning of cemented carbide compacts according to claim 1, characterized in that The silica gel sealing ring comprises a first silica gel sealing ring (1) and a second silica gel sealing ring (3), and the first silica gel sealing ring (1) and the second silica gel sealing ring (3) are higher than the annular groove by 2-3 mm.

3. A clamping device for turning of cemented carbide compacts according to claim 2, characterized in that The diameter of the first silica gel sealing ring (1) is smaller than the diameter of the finished product annular outer circle, and the diameter of the second silica gel sealing ring (3) is larger than the diameter of the finished product annular inner hole.

4. A clamping device for turning of cemented carbide compacts according to claim 1, characterized in that The lower part of the T-shaped aluminium sucking disc (10) is a sucking disc clamping position (6), the diameters of the annular grooves increase from inside to outside, and the annular grooves are concentrically arranged on the upper surface of the aluminium sucking disc (10).

5. A clamping device for turning of cemented carbide compacts according to claim 2, characterized in that The upper surfaces of the first silica gel sealing ring (1) and the second silica gel sealing ring (3) are attached to a workpiece (12).

6. A clamping device for turning of cemented carbide compacts according to claim 5, characterized in that The first silica gel sealing ring (1), the second silica gel sealing ring (3), the chuck (8), the aluminium sucking disc (10) and the workpiece (12) are longitudinally coaxially arranged.

7. A clamping device for turning of cemented carbide compacts according to claim 1, characterized in that The numerical control vertical lathe comprises an electric tool rest (11), a vertical lathe guide rail (13), a vertical lathe base (14) and a tool (15), and the tool (15) is fixedly arranged on the electric tool rest (11).

8. A clamping device for turning of cemented carbide compacts according to claim 7, characterized in that The tool (15) comprises an inner hole tool for machining an inner hole and an outer circle tool for turning an outer circle.

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