Tool and method suitable for turning thin-walled parts

Abstract

The invention provides a tool and method suitable for turning of thin-wall parts. The tool comprises a cylindrical supporting body, a threaded hole is machined in the center of one end of the cylindrical supporting body, and a first plane groove and a second plane groove are symmetrically machined in the two sides of the cylindrical supporting body; the cylindrical supporting body is fixedly installed at the top end of a T-shaped bolt of the four-jaw chuck in a matched mode through a threaded hole and supports the lower end face of a part to be machined, and the T-shaped bolt is arranged in a T-shaped groove of the four-jaw chuck. The tool can be fixed between the thin-wall part and the end face of the four-jaw chuck by means of the T-shaped bolt in the turning process of the thin-wall part, so that the suspended part at the bottom of the thin-wall part is supported, the supporting rigidity is guaranteed, subsequent turning of the thin-wall part is facilitated, and the machining precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turning processing, in particular to a tooling and method suitable for turning processing of thin-walled parts. BACKGROUND

[0002] Thin-walled parts are prone to deformation and vibration due to clamping force, cutting force, cutting heat and other factors during turning processing, resulting in difficulty in ensuring processing precision (such as roundness, cylindricity, and wall thickness uniformity) and surface quality. When processing thin-walled parts conventionally, the workpiece is clamped on a four-jaw chuck, and the part is suspended near the inner side of the chuck without support points. Since the part itself has poor rigidity, the part shakes severely when the main shaft rotates at high speed, and the end face runout is more than 3 mm, making it difficult to ensure the size during processing and causing serious tool wear. The purpose of the present application is to increase support at the suspended position of the part and enhance the rigidity of the part, thereby effectively reducing shaking during processing, improving processing quality and efficiency, and reducing tool wear.

[0003] In the prior art, the following methods are usually used to solve the above problems: (1) Process optimization method: reduce cutting force by using small cutting depth, high rotation speed, small tool engagement, and increasing the number of passes. This method is inefficient and has limited effect on workpieces with extremely poor rigidity.

[0004] (2) Special rigid mandrel method: design and manufacture a mandrel with interference fit for a specific workpiece. This method is costly, has poor universality, and the interference fit itself may damage the workpiece or cause uneven support due to the inner hole error of the workpiece. SUMMARY

[0005] The purpose of the present application is to overcome the above shortcomings and provide a tooling and method suitable for turning processing of thin-walled parts. The tooling can be fixed between the thin-walled part and the end face of the four-jaw chuck by means of a T-shaped bolt during turning processing of the thin-walled part, thereby supporting the suspended part of the bottom of the thin-walled part and ensuring the support stiffness, so as to facilitate subsequent turning processing and improve processing precision and efficiency.

[0006] To achieve the above technical features, the purpose of the present application is achieved as follows: a tooling suitable for turning processing of thin-walled parts, comprising a cylindrical support body, a threaded hole is processed at the center of one end of the cylindrical support body, and first and second flat grooves are symmetrically processed on both sides of the cylindrical support body. The cylindrical support body is fixed and installed at the top end of the T-shaped bolt of the four-jaw chuck through the threaded hole and is supported at the lower end face of the workpiece to be processed, and the T-shaped bolt is arranged inside the T-shaped groove of the four-jaw chuck.

[0007] Preferably, the cylindrical support body is processed from round steel.

[0008] Preferably, the height of the cylindrical support body is set to be different specifications according to the distance between the clamping groove on the claw and the height of the end face of the four-jaw chuck.

[0009] Preferably, the cylindrical support body is arranged uniformly in the position of the T-shaped groove of the four-jaw chuck.

[0010] Preferably, the cylindrical support body is arranged staggered with the claws of the four-jaw chuck.

[0011] A method suitable for turning thin-walled parts, the method uses any one of the tooling suitable for turning thin-walled parts to achieve, comprising the following steps: Step 1, selection of the size specification of the cylindrical support body: According to the height size of the claws of the four-jaw chuck and the size of the parts to be processed, select the corresponding height size of the cylindrical support body; Step 2, installation of T-shaped bolt: Sliding into the T-shaped groove of the four-jaw chuck, and according to the size of the parts to be processed Step 3, installation of the cylindrical support body: The cylindrical support body is screwed into the T-shaped bolt, one is placed in each T-shaped groove position, and the cylindrical support body is locked with the T-shaped bolt; Step 4, installation of the parts to be processed: The parts to be processed are placed between the claws of the four-jaw chuck, the appropriate height of the clamping groove is selected, and the bottom end face of the parts to be processed is fitted with the top face of the cylindrical support body; Step 4, clamping and fixing of the parts to be processed: After the parts to be processed are placed reliably, the claws of the four-jaw chuck are operated to clamp the parts to be processed by the claws; Step 5, turning of the parts to be processed: Start the lathe and turn the parts to be processed. During the turning process, the cylindrical support body supports the local area of the parts to be processed to enhance its stiffness, suppresses the tool deflection phenomenon and vibration caused by cutting force, and ensures the roundness, cylindricity and size consistency of the parts to be processed.

[0012] The present application has the following advantages: 1. Significantly improve the machining accuracy: by internal support, the local rigidity of thin-walled parts in the machining area is greatly enhanced, the "tool deflection" phenomenon and vibration caused by cutting force are effectively suppressed, the roundness, cylindricity and size consistency of the parts are ensured, and the surface roughness is improved.

[0013] 2. Strong universality and good self-adaptability: a set of tooling can adapt to thin-walled parts of different diameters, thicknesses and different materials.

[0014] 3. Simple operation and high efficiency: The clamping and disassembly process is simple and quick, which significantly improves production efficiency and is suitable for mass production.

[0015] In summary, this fixture can be fixed between the thin-walled part and the end face of the four-jaw chuck during the turning process of thin-walled parts by means of T-bolts, thereby supporting the suspended part at the bottom of the thin-walled part, ensuring support rigidity, so as to facilitate subsequent turning processing, and improving machining accuracy and efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a cross-sectional view of the cylindrical support body of the present invention.

[0018] Figure 2 This is a left view of the cylindrical support body of the present invention.

[0019] Figure 3 This is a front view during the processing of the present invention.

[0020] Figure 4 This is a top view during the processing of the present invention.

[0021] Figure 5 This is a side sectional view during the processing of the present invention.

[0022] Figure 6 This is a first-view 3D image of the processing of this invention.

[0023] Figure 7 This is a second-view 3D diagram of the processing of this invention.

[0024] Figure 8 This is a 3D view of the part to be processed in this invention.

[0025] Figure 9 This is an internal cross-sectional view during the processing of the present invention.

[0026] In the diagram: 1. Cylindrical support; 2. Threaded hole; 3. First plane groove; 4. Second plane groove; 5. Jaw; 6. T-slot; 7. Part to be processed; 8. Four-jaw chuck; 9. T-bolt; 10. Slot. Detailed Implementation

[0027] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0028] Example 1: See Figures 1-9A tooling suitable for turning thin-walled parts includes a cylindrical support 1. A threaded hole 2 is machined at the center of one end of the cylindrical support 1. A first planar groove 3 and a second planar groove 4 are symmetrically machined on both sides of the cylindrical support 1. The cylindrical support 1 is fixedly mounted on the top of a T-bolt 9 of a four-jaw chuck 8 via the threaded hole 2 and supported on the lower end face of the workpiece 7 to be machined. The T-bolt 9 is located inside a T-slot 6 of the four-jaw chuck 8. This tooling allows for the fixing of the thin-walled part between the workpiece and the end face of the four-jaw chuck during the turning process, thereby supporting the suspended bottom portion of the thin-walled part, ensuring support rigidity, facilitating subsequent turning, and improving machining accuracy and efficiency. In practical use, the cylindrical support 1 is fixed on the T-bolt 9, and the end face of the part to be processed 7 is supported on the top of the cylindrical support 1. Then, the part to be processed 7 is clamped by the jaw 5. After the part to be processed 7 is clamped, the lathe is started to process the part to be processed 7.

[0029] Furthermore, the first planar groove 3 and the second planar groove 4 facilitate the subsequent tightening and fixing of the cylindrical support 1 with the help of a wrench, so that it is fixed to the top of the T-bolt 9.

[0030] Furthermore, the cylindrical support 1 is made of round steel. Using round steel simplifies the manufacturing process, improves efficiency, and reduces costs.

[0031] Furthermore, the height of the cylindrical support 1 is configured in various different sizes based on the distance between the slot 10 on the jaw 5 and the end face of the four-jaw chuck 8. These different height dimensions allow for good adaptation to four-jaw chucks 8 of different sizes and specifications.

[0032] Furthermore, the cylindrical support 1 is evenly arranged circumferentially at the location of the T-slot 6 of the four-jaw chuck 8. By adopting a uniformly arranged circumferential installation, the support effect is ensured.

[0033] Furthermore, the cylindrical support 1 and the jaws 5 of the four-jaw chuck 8 are arranged in an alternating manner. By adopting an alternating arrangement, all-round support can be achieved for the end face of the workpiece 7 to be machined, thereby ensuring the reliability of the support and the rigidity during subsequent machining processes to prevent tool deflection.

[0034] Example 2: A method for turning thin-walled parts, wherein the method is implemented using any one of the tooling methods described above, and includes the following steps: Step 1, Selection of the size specifications of cylindrical support 1: Based on the height of the jaws 5 of the four-jaw chuck 8 and the dimensions of the workpiece 7 to be processed, select a cylindrical support body 1 with the corresponding height. Step 2, Installation of T-bolt 9: Slide the T-bolt 9 into the T-slot 6 of the four-jaw chuck 8, and adjust it according to the dimensions of the part 7 to be processed. Step 3, Installation of cylindrical support 1: Screw the cylindrical support 1 into the T-bolt 9, placing one in each T-slot 6 position, and lock the cylindrical support 1 and T-bolt 9 together. Step 4, Installation of part 7 to be processed: Place the workpiece 7 to be processed between the jaws 5 of the four-jaw chuck 8, and select a slot 10 of appropriate height so that the bottom surface of the workpiece 7 is in contact with the top surface of the cylindrical support 1. Step 4, clamping and fixing the part 7 to be processed: After the workpiece 7 is placed securely, operate the jaws 5 of the four-jaw chuck 8 to clamp the workpiece 7. Step 5, turning of part 7: Start the lathe and perform turning on the workpiece 7. During the turning process, the cylindrical support 1 supports a local area of ​​the workpiece 7 to enhance its rigidity, suppress the tool deflection and vibration caused by the cutting force, and ensure the roundness, cylindricity and dimensional consistency of the workpiece 7.

[0035] The specific working process and principle of this invention are as follows: When the workpiece 7 needs to be processed, first, place the T-bolt 9 into the T-slot 6 of the four-jaw chuck 8; then, screw the cylindrical support 1 into the T-bolt 9, placing one in each T-slot 6 position, for a total of 4, and lock the cylindrical support 1 to the T-bolt 9; place the workpiece 7 into the four-jaw chuck 8, with the height of the cylindrical support 1 matching the height of the slot 10 on the jaw 5, and the bottom surface of the workpiece 7 flush with the top surface of the cylindrical support 1; finally, lock the jaw 5, clamp the workpiece 7 with the jaw 5, and then start the lathe to process the workpiece 7.

Claims

1. A tooling suitable for turning thin-walled parts, characterized in that, It includes a cylindrical support (1), with a threaded hole (2) machined at the center of one end of the cylindrical support (1), and a first planar groove (3) and a second planar groove (4) machined symmetrically on both sides of the cylindrical support (1). The cylindrical support (1) is fixedly installed on the top of the T-bolt (9) of the four-jaw chuck (8) through the threaded hole (2) and supported on the lower end face of the workpiece (7) to be processed. The T-bolt (9) is set inside the T-slot (6) of the four-jaw chuck (8).

2. The tooling for turning thin-walled parts according to claim 1, characterized in that: The cylindrical support (1) is made of round steel.

3. The tooling for turning thin-walled parts according to claim 2, characterized in that: The height of the cylindrical support (1) is set in various different specifications according to the distance between the groove (10) on the jaw (5) and the end face of the four-jaw chuck (8).

4. The tooling for turning thin-walled parts according to claim 2, characterized in that: The cylindrical support (1) is evenly arranged in a circle at the location of the T-slot (6) of the four-jaw chuck (8).

5. The tooling for turning thin-walled parts according to claim 2, characterized in that: The cylindrical support (1) and the jaws (5) of the four-jaw chuck (8) are arranged in an alternating manner.

6. A method for turning thin-walled parts, characterized in that, The method is implemented using a tooling suitable for turning thin-walled parts as described in any one of claims 1-5, and includes the following steps: Step 1, Selection of the size and specifications of the cylindrical support (1): Based on the height of the jaws (5) of the four-jaw chuck (8) and the size of the workpiece (7) to be processed, select a cylindrical support (1) with the corresponding height. Step 2, Installation of T-bolt (9): Slide the T-bolt (9) into the T-slot (6) of the four-jaw chuck (8), and adjust the size according to the dimensions of the part to be processed (7). Step 3, Installation of the cylindrical support (1): Screw the cylindrical support (1) into the T-bolt (9), placing one in each T-slot (6) position, and lock the cylindrical support (1) and T-bolt (9) together; Step 4, Installation of the part to be processed (7): Place the part to be processed (7) between the jaws (5) of the four-jaw chuck (8), and select a suitable height for the slot (10), so that the bottom surface of the part to be processed (7) is in contact with the top surface of the cylindrical support (1). Step 4, clamping and fixing the part to be processed (7): After the workpiece (7) is placed securely, operate the jaws (5) of the four-jaw chuck (8) to clamp the workpiece (7). Step 5, turning of the part to be machined (7): Start the lathe and perform turning on the workpiece (7). During the turning process, the cylindrical support (1) supports the local area of ​​the workpiece (7) to enhance its rigidity, suppress the tool deflection and vibration caused by the cutting force, and ensure the roundness, cylindricity and dimensional consistency of the workpiece (7).

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