Annular workpiece positioning tool

Abstract

The utility model belongs to the technical field of tools, and particularly relates to an annular workpiece positioning tool which comprises a disc base, a three-jaw chuck is arranged at the axis of the disc base, a telescopic rod is arranged on each jaw of the three-jaw chuck, a top block is arranged at the tail end of each telescopic rod, and a circle of supporting columns are arranged on the top face of the disc base around the axis in an array mode. A circle of rotating oil cylinders located on the inner side of the supporting column are arranged on the top face of the disc base around the axis in an array mode, pressing blocks are arranged at the piston ends of the rotating oil cylinders, a circle of vertical clamping jaws located on the outer side of the supporting column are arranged on the top face of the disc base around the axis in an array mode, and all the rotating oil cylinders are connected in series and then connected with an oil pump. Compared with the prior art, the positioning tool can effectively solve the fixing problem in the machining process of the large-size annular workpiece, the machining precision and efficiency are improved, and the product quality is ensured. And meanwhile, the intelligence and automation level of the tool is enhanced, and the adaptability and flexibility to complex machining requirements are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of frock, especially relates to a ring workpiece positioning frock. BACKGROUND

[0002] In the automobile manufacturing and mechanical processing industry, as a key component, the machining precision and stability of the ring workpiece are directly related to the performance and reliability of the final product. However, in the actual production process, the positioning and fixing of the ring workpiece have always been a technical problem, especially for larger ring workpieces, the traditional fixing method faces many challenges.

[0003] The traditional ring workpiece fixing method mainly relies on chuck clamping. The chuck clamps the workpiece radially through the clamping jaw inside the chuck, thereby realizing the stable fixing of the workpiece. However, for larger ring workpieces, since their size exceeds the maximum stroke range of ordinary chucks, the traditional chuck clamping method is not satisfactory. This not only limits the machining range, but also may cause deviation of the workpiece during machining due to unstable fixing, thereby affecting the machining precision and workpiece quality.

[0004] In order to overcome this technical problem, there is an urgent need for a new type of ring workpiece positioning frock in the market. This frock needs to be able to adapt to ring workpieces of different sizes, especially those that exceed the clamping capacity of traditional chucks. At the same time, the frock should also have good stability and precision to ensure the stability of the workpiece during machining and the machining quality. Therefore, a new type of ring workpiece positioning frock is designed to meet the market demand. SUMMARY

[0005] In view of the above-mentioned problems of the prior art, the utility model provides a ring workpiece positioning frock.

[0006] The utility model discloses a ring workpiece positioning frock, including disc base, the disc base's axle core is provided with three jaw chuck, every jaw of three jaw chuck is provided with a telescopic link, the telescopic link's end is provided with the top block, the disc base's top face is arranged around the axle core and is provided with a circle of support column, the disc base's top face is arranged around the axle core and is provided with a circle of rotary oil cylinder in the inside of support column, the piston end of rotary oil cylinder is provided with the pressing block, the disc base's top face is arranged around the axle core and is provided with a circle of vertical jaw outside support column, all rotary oil cylinder is connected after series connection oil pump.

[0007] Further, the top surface of the disc base is rotatably arrayed with a plurality of hydraulic jacks around the shaft center, the telescopic end of the hydraulic jack is provided with a column sensor at the top, and the column sensor is connected with the controller between the oil pump.

[0008] Further, the three-jaw chuck is a hydraulic chuck.

[0009] Further, the disc base is provided with an integrated valve connected to an oil pump, the integrated valve being connected to all rotary oil cylinders, hydraulic jacks and hydraulic chucks.

[0010] Further, the disc base is provided with a through-hole slip ring at the shaft center, the through-hole slip ring being connected to the integrated valve and the oil pump.

[0011] Further, the top surface of the disc base is provided with a plurality of rows of screw holes arranged around the shaft center, and the vertical clamping jaws are connected to the screw holes through screws.

[0012] Further, the number of the vertical clamping jaws is greater than or equal to 6.

[0013] Further, the top surface of the disc base is provided with a guide seat corresponding to each telescopic rod, and the telescopic rod is connected to the guide seat through sliding.

[0014] Compared with the prior art, the positioning tool can effectively solve the fixing problem in the machining of large-size ring-shaped workpieces, improve the machining precision and efficiency, and ensure the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a top view of the utility model in normal state;

[0016] Figure 2 is a top view of the utility model in the state of clamping workpieces.

[0017] In the figure: 1, disc base; 2, three-jaw chuck; 3, telescopic rod; 4, top block; 5, support column; 6, rotary oil cylinder; 7, pressing block; 8, vertical clamping jaw; 9, hydraulic jack; 10, column sensor; 11, integrated valve; 12, guide seat; 13, ring-shaped workpiece. DETAILED DESCRIPTION

[0018] In order to better understand the utility model, the embodiments of the utility model will be explained in detail below with reference to the drawings. Figures 1-2 In order to better understand the utility model, the embodiments of the utility model will be explained in detail below with reference to the drawings.

[0019] It should be noted that the "front, rear, left, right, top and bottom" directions in the text are all based on the "front, rear, left, right, top and bottom" directions in the drawings. Figure 1 It should be noted that the "front, rear, left, right, top and bottom" directions in the text are all based on the "front, rear, left, right, top and bottom" directions in the drawings.

[0020] The utility model discloses a kind of annular workpiece positioning tool, including a disc base 1, this disc base 1 as the support structure of entire tooling, with sufficient strength and stability.At the axis of disc base 1, a three-jaw chuck 2 is provided, the three-jaw chuck 2 is used to preliminary positioning and clamping the inner hole of annular workpiece 13.To enhance the stability and adaptability of clamping, a telescopic rod 3 is provided on each jaw of three-jaw chuck 2, and the end of telescopic rod 3 is provided with a top block 4.In this way, when annular workpiece 13 is placed on three-jaw chuck 2, telescopic rod 3 can be adjusted according to the size of workpiece, so that top block 4 is tightly attached to the inner wall of workpiece, so that more closely clamping is realized.

[0021] On the top surface of disc base 1, a circle of support columns 5 is arranged around the axis.These support columns 5 are used to support the lower part of annular workpiece 13, to prevent annular workpiece 13 from deforming or displacing due to gravity during processing.Meanwhile, a circle of rotary oil cylinders 6 is provided inside the support columns 5.A pressing block 7 is provided on the piston end of rotary oil cylinder 6, which applies pressure to the workpiece when rotary oil cylinder 6 is working, thereby further fixing the workpiece.

[0022] In addition, a circle of vertical clamps 8 is also provided outside the support columns 5.These vertical clamps 8 can clamp from the outside of the workpiece, and together with the three-jaw chuck 2 and rotary oil cylinder 6, they form a comprehensive fixation of annular workpiece 13.In order to realize synchronous control of all oil cylinders and clamps, all rotary oil cylinders 6 are connected in series to an oil pump, and they are driven to work by the power provided by the oil pump.

[0023] In order to further improve the intelligence and automation level of the tooling, the positioning tool also arranges several hydraulic jacks 9 on the top surface of disc base 1 in axial rotation array.The telescopic end of these hydraulic jacks 9 is provided with a column sensor 10 at the top, which can monitor the position and state of the workpiece in real time.The controller is connected between the column sensor 10 and the oil pump, and the column sensor 10 is not only used to detect the position of the workpiece to confirm the optimal clamping time point, but also used to monitor the clamping force of the hydraulic structure to ensure that the clamping is stable and will not damage the annular workpiece 13.

[0024] At the same time, the three-jaw chuck 2 is also designed as a hydraulic chuck, which can realize more accurate clamping and release through hydraulic control.On the disc base 1, an integrated valve 11 connected to the oil pump is also provided.The integrated valve 11 can realize unified control and management of all hydraulic elements, including rotary oil cylinders 6, hydraulic jacks 9 and hydraulic chuck.

[0025] Considering the machining of the machine tool, if the tooling can rotate, the public efficiency can be greatly improved. Therefore, a through-hole slip ring is arranged at the axis of the square-disc base 1, which can ensure the connection between the oil pump and the integrated valve 11 is not affected by the size and position of the workpiece, and at the same time, the tooling can be rotated and installed on the turntable for use.

[0026] In addition, in order to enhance the flexibility and adaptability of the vertical clamping jaw 8, the positioning tool also arranges a plurality of rows of screw holes on the top surface of the disc base 1 around the axis. The vertical clamping jaw 8 is connected with the screw hole, and the position and number of the vertical clamping jaw 8 can be adjusted as needed. In the preferred embodiment of the positioning tool, the number of vertical clamping jaws 8 is greater than or equal to 6, so as to ensure sufficient clamping force on the workpiece.

[0027] In order to ensure the stability of the telescopic rod 3, the top surface of the disc base 1 is provided with a guide seat 12 corresponding to the telescopic rod 3, and the telescopic rod 3 is in sliding connection with the guide seat 12.

[0028] The use mode and principle of the utility model:

[0029] Firstly, according to the size and shape of the annular workpiece 13, the position and number of the telescopic rod 3 and the vertical clamping jaw 8 on the three-jaw chuck 2 are adjusted. Then, the workpiece is placed on the three-jaw chuck 2 and preliminarily clamped by the hydraulic chuck. At this time, the column sensor 10 starts to detect the position and state of the workpiece and feeds back the information to the controller. The controller judges the best clamping time point according to the sensor data and controls the oil pump to start, so that the rotary oil cylinder 6 works and the workpiece is further fixed by the pressing block 7. At the same time, the hydraulic jack 9 also adjusts its telescopic length according to the instruction of the controller, so as to ensure that the Z-axis direction of the workpiece is stably clamped. Finally, the vertical clamping jaw 8 is tightened manually, and the outer ring of the annular workpiece 13 is tightly pressed, so as to realize further fixation. During the machining process, the annular workpiece positioning tool provided by the positioning tool can ensure that the workpiece always maintains a stable position and state, thereby improving the machining precision and product quality.

[0030] In the description of the utility model, need understanding is, the orientation or position relation that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate is based on the orientation or position relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element referred to must have a particular orientation, is constructed and operated with a particular orientation, therefore can not be understood as the restriction of the utility model. In the description of the utility model, unless otherwise specified and limited, need to be explained, the terms "mount", "connect", "connect" should be understood broadly, for example, can be mechanical connection or electrical connection, can also be the communication of two elements inside, can be directly connected, also can be indirectly connected through intermediate medium, for the ordinary skill of the person of the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An annular workpiece positioning tool, characterized by: The utility model provides a disc base (1) is provided with three jaw chucks (2) at the axle center of disc base (1), and each jaw of three jaw chucks (2) is provided with a telescopic rod (3), and the end of telescopic rod (3) is provided with a top block (4), and the top surface of disc base (1) is provided with a circle of support column (5) around the axle center, and the top surface of disc base (1) is provided with a circle of rotary oil cylinder (6) inside support column (5) around the axle center, and the piston end of rotary oil cylinder (6) is provided with a pressure block (7), and the top surface of disc base (1) is provided with a circle of vertical jaw (8) outside support column (5) around the axle center, and all rotary oil cylinder (6) is connected in series and connected with oil pump.

2. An annular workpiece positioning tool as defined in claim 1, wherein: The top surface of disc base (1) is provided with a plurality of hydraulic jacks (9) around the axle center, and the telescopic end top of hydraulic jack (9) is provided with a column sensor (10), and the column sensor (10) is connected with controller between oil pump.

3. An annular workpiece positioning tool as defined in claim 2, wherein: The three jaw chucks (2) are hydraulic chucks.

4. An annular workpiece positioning tool as defined in claim 3, wherein: The disc base (1) is provided with integrated valve (11) connected with oil pump, and integrated valve (11) is connected with all rotary oil cylinder (6), hydraulic jack (9) and hydraulic chuck.

5. An annular workpiece positioning tool as defined in claim 4, wherein: The axle center of disc base (1) is provided with through-hole slip ring, and through-hole slip ring is connected with integrated valve (11) and oil pump.

6. An annular workpiece positioning tool as defined in claim 1, wherein: The top surface of disc base (1) is provided with a plurality of rows of screw holes around the axle center, and the vertical jaw (8) is connected with screw hole.

7. An annular workpiece positioning tool as defined in claim 6 wherein: The number of vertical jaw (8) is greater than or equal to 6.

8. An annular workpiece positioning tool as defined in claim 1, wherein: The top surface of disc base (1) is provided with guide seat (12) corresponding to telescopic rod (3), and telescopic rod (3) is connected with guide seat (12) slidingly. The top surface of disc base (1) is provided with guide seat (12) corresponding to telescopic rod (3), and telescopic rod (3) is connected with guide seat (12) slidingly.

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