Thin-walled cylindrical part end face positioning chuck fixing device

Abstract

The present application provides a kind of thin-walled cylinder piece end face positioning chuck fixing device, comprising: drive device, drive device telescopic drive mechanism, workpiece inner wall compression assembly, the workpiece compression assembly includes the compression jaw assembly being hinged with the telescopic drive mechanism power output end, the compression jaw assembly includes compression jaw connecting rod, connecting rod support being hinged with the compression jaw connecting rod for supporting compression jaw connecting rod, the compression jaw being arranged at the end of compression jaw connecting rod for clamping workpiece wall;Further comprising, workpiece end face support assembly, the workpiece end face support assembly includes the claw for forming support to workpiece outer wall;The acting force of the compression jaw and the claw is spaced distribution on the end face of thin-walled cylinder piece.Workpiece end face support assembly and workpiece inner wall compression assembly can realize the part of thin-walled part shell length too long and the hole of both ends and the shell outer diameter is not the part of big zero.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tooling technology for machining, and more specifically, to a positioning chuck fixing device for the end face of a thin-walled cylindrical part. Background Technology

[0002] Thin-walled cylindrical parts have advantages such as light weight, compact structure, and small footprint, and are therefore widely used in mechanical design. However, there are considerable challenges in the machining of thin-walled cylindrical parts. These parts are generally machined on a lathe, and after turning, problems such as large coaxiality deviation between the outer diameter and the inner hole, and out-of-tolerance roundness of the inner hole and outer diameter often occur. Moreover, when machining thin-walled parts with shell lengths of 1200mm to 4800mm and shell outer diameters of φ290mm to φ1000mm, and requiring an angular deviation of no more than ±1′, current market-available clamping fixtures and fixtures with added fixing tubes cannot machine these parts. When the shell length of the thin-walled part is too long and the holes at both ends are not the same size as the outer diameter of the shell, machining is also impossible.

[0003] Patent document CN209239095U discloses an internal pressure clamping chuck device for thin-walled parts, including a chuck connecting plate, a positioning hinge plate, pressure claws, a hinge pull plate, a rotating shaft, a pin, a pull plate, a pull joint, and a pull rod. This patent achieves effective clamping of thin-walled workpieces. Through internal pressure clamping, it avoids deformation of the outer diameter of thin-walled workpieces caused by radial clamping. However, as can be seen from the patent specification and drawings, the workpiece is clamped at a thick-walled position. If this technical solution is used to directly press the thin-walled workpiece onto the positioning hinge plate using the pressure claws, in actual clamping of thin-walled workpieces, insufficient pressure from the pressure claws will cause the workpiece to loosen, while excessive pressure from the pressure claws will cause deformation of the clamped part of the workpiece.

[0004] In summary, the technical problem with the existing technology is that the workpiece is deformed due to insecure or excessive clamping. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention proposes a positioning chuck fixing device for the end face of thin-walled cylindrical parts. The specific details of this invention are as follows:

[0006] A thin-walled cylindrical component end face positioning chuck fixing device includes: a workpiece inner wall clamping assembly, the workpiece clamping assembly including a clamping drive device, a clamping jaw assembly hinged to the power output end of the clamping drive device, the clamping jaw assembly including a clamping jaw connecting rod, a connecting rod support hinged to the clamping jaw connecting rod for supporting the clamping jaw connecting rod, and a clamping jaw disposed at the end of the clamping jaw connecting rod for clamping the workpiece wall; it also includes a workpiece end face support assembly, the workpiece end face support assembly including a clamping jaw for supporting the inner circle of the workpiece end face. The forces of the clamping jaw and the clamping jaw are distributed at intervals on the end face of the thin-walled cylindrical component.

[0007] Compared to conventional methods that only use internal pressure clamping chucks to fix thin-walled workpieces, which suffer from problems such as uneven workpiece clamping and deformation due to slight misalignment of the positioning winch and the fact that the winch itself is planar and thus has uneven surface pressure, this invention addresses these issues. The power output end of the telescopic drive mechanism is hinged to the pressure claw connecting rod, allowing the pressure claw to open and close under the action of the drive device. The opening and closing angle of the pressure claw connecting rod is controlled by varying the telescopic height of the telescopic rod, making the downward pressure of the pressure claw controllable. The chuck supports the end face and inner circle of the workpiece. In particular, the force of the pressure claw and the chuck is distributed at intervals on the end face of the thin-walled cylindrical workpiece, ensuring that the workpiece position does not change after the positioning chuck clamps it, and also preventing deformation of the clamped position.

[0008] Since the inner wall shape of the workpiece end is not a continuous plane, the pressure claw described in this application further includes a front pressure claw and a rear pressure claw. By implementing the front pressure claw and the rear pressure claw, the pressure is applied to different positions on the inner wall of the workpiece end face.

[0009] To further ensure a more uniform force distribution on the workpiece's gripper jaws and prevent deformation of the workpiece's inner wall, clamping blocks are provided at the ends of the grippers. The clamping block mounted on the front gripper jaw is rectangular with an arc-shaped front end; the clamping block on the rear gripper jaw is an irregular pentagon, with two consecutive inclined planes at different angles on the side closest to the front gripper jaw. The clamping blocks assist the grippers in clamping the parts from the inside. Because the diameter of the inner wall of the thin-walled cylinder decreases from large to small when the holes at both ends shrink, and the dimensions of different parts are different, setting two clamping copper blocks with different shapes makes it easier to ensure a tighter fit between the part and the limiting blocks on the chuck.

[0010] Furthermore, in this invention, the clamping drive device includes a telescopic rod connected to the end of the clamping claw assembly to move the clamping claw connecting rod, and a drive mechanism for driving the telescopic rod to extend and retract. The drive mechanism described in this invention can be a pneumatic cylinder or a hydraulic cylinder, or other devices capable of achieving the driving effect.

[0011] To accommodate workpieces with different inner wall shapes, the pressure claw connecting rod and the connecting rod support are directly equipped with connecting blocks that are hinged to the pressure claw connecting rod and the connecting rod support, respectively. These connecting blocks allow for a wider range of positional variations in the pressure claw.

[0012] Furthermore, to position the jaws and accommodate workpieces of different sizes, the jaws are positioned on the chuck and limited by a positioning ring on the chuck end face to prevent excessive clamping and workpiece deformation. The position of the jaws is adjustable, making them suitable for thin-walled parts with similar inner diameters at their ends, reducing replacement frequency and minimizing wear between parts.

[0013] Furthermore, the jaw includes a base jaw and an inner support claw disposed on the base jaw. The base jaw is used to support the inner support claw, and the inner support claw is used to fix and radially position the inner hole of the workpiece end face.

[0014] To improve the clamping effect of the fixture, the pressure claw assembly is configured in multiple sets, which are evenly distributed at equal angles with the power output end of the clamping drive device as the center. The chuck is configured with multiple sets of jaws, which are distributed on the chuck with the center of the chuck as the center. One set of pressure claw assembly and the nearest adjacent jaws on the left and right sides form a workpiece clamping assembly. For example, the thin-walled cylindrical end face positioning chuck fixing device has a total of three sets of pressure claw assembly and six sets of jaws. After the end face positioning chuck fixing device fixes the workpiece, one set of pressure claw assembly and the nearest adjacent jaws on the left and right sides form a workpiece clamping assembly. The three sets of workpiece clamping assemblies form a clamping force between the inner wall of the workpiece and the end face of the workpiece, clamping the workpiece more firmly.

[0015] To determine whether the end face of the workpiece is properly clamped, a limiting block is provided on the chuck end face positioning ring, and an airtightness detection hole is provided on the limiting block. The function of the limiting block is to contact the end face of the workpiece for axial positioning; the function of the airtightness detection hole is to detect whether the end face of the part is properly clamped. If the airtightness test is qualified, the part is properly clamped; if the test is unqualified, it is re-clamped.

[0016] The application device for the thin-walled cylindrical part end face positioning chuck fixing device also includes a turntable connected to the chuck via a turntable connecting plate; a drive device is installed inside the turntable, and a rotation mechanism is provided on the drive device to achieve rotation using a rotary drive. This application device is used to clamp thin-walled cylindrical parts and is applied to machine tools to realize the rotation of thin-walled cylindrical parts, enabling the machine tool to perform drilling, tapping, reaming, milling, and other machining operations on the thin-walled cylindrical parts. This application device is particularly suitable for machining large thin-walled cylindrical parts (shell length 1200mm~4800mm; shell outer diameter φ290mm~φ1000mm, angular deviation not greater than ±1ˊ), achieving high-precision machining by ensuring firm positioning of the part during rotation, preventing positional displacement, minimizing part disturbance, preventing part deformation, and achieving high-precision machining.

[0017] The technical advantages of this invention are as follows:

[0018] 1. To improve the clamping effect of the fixture, multiple sets of pressure claw assemblies are configured, evenly distributed at equal angles with the power output end of the clamping drive device as the center. Multiple sets of jaws are provided on the chuck, all distributed on the chuck with the center as the center. Each set of pressure claw assemblies, together with its nearest adjacent jaws on the left and right, forms a workpiece clamping assembly. For example, a thin-walled cylindrical end-face positioning chuck fixing device has three sets of pressure claw assemblies and six sets of jaws. After the end-face positioning chuck fixing device fixes the workpiece, each set of pressure claw assemblies, together with its nearest adjacent jaws on the left and right, forms a workpiece clamping assembly. The three sets of workpiece clamping assemblies create a clamping force between the inner wall of the workpiece and the end face of the workpiece, clamping the workpiece more firmly.

[0019] 2. By dividing the pressure claw into front pressure claw and rear pressure claw, the pressure claw can be clamped at different positions on the inner wall of the workpiece end face. Pressure claw clamping blocks are set on the end face of the pressure claw to make the force on the workpiece on the pressure claw more uniform.

[0020] 3. The workpiece inner wall clamping assembly clamps the parts from the inside, ensuring they are tightly fitted against the limiting block. The inner support claws on the chuck open and position the inner hole of the workpiece end face, thus reducing workpiece deformation during machining. The cooperation between the workpiece inner wall clamping assembly and the chuck jaws creates a certain clamping force on both the inside and outside of the workpiece, making it more securely clamped. A chuck end face locating ring is installed on the chuck for limiting and preventing excessive clamping that could deform the workpiece.

[0021] 4. The internal support claw is designed to tighten the inner hole of the workpiece end face and position the workpiece end face, thereby reducing workpiece deformation during processing.

[0022] 5. The use of limit blocks ensures axial positioning when the workpiece end face contacts the jaws on the chuck; an airtightness test hole is used to check whether the end face of the part is properly clamped. If the airtightness test is passed, the part is clamped in place; if the test fails, it is re-clamped. This ensures that the machining error of the part is small during processing.

[0023] 6. The combination of the workpiece end face support assembly and the workpiece inner wall clamping assembly can realize the production of thin-walled parts with excessively long shell lengths and holes at both ends that are not the same size as the outer diameter of the shell.

[0024] 7. When the inner hole of a thin-walled part has no clamping plane, only the workpiece end face support assembly is designed, and the workpiece inner wall clamping assembly is not designed.

[0025] 8. The workpiece end face support assembly and clamping claw assembly on the fixture can be replaced with limit rings, chucks and clamping claw assemblies of different specifications and sizes according to the different specifications and sizes of the parts. Attached Figure Description

[0026] Figure 1 This is a left view of the pressure claw assembly of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0027] Figure 2 This is a left view of the driving device of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0028] Figure 3 This is a front view of the pressure claw assembly of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0029] Figure 4 This is an isometric view of the pressure claw assembly of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0030] Figure 5 This is a partial enlarged view of the thin-walled cylindrical end face positioning chuck fixing device at point 4A in this invention;

[0031] Figure 6 This is an isometric view of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0032] Figure 7 This is a front view of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0033] Figure 8 This is an isometric drawing of the thin-walled cylindrical end face positioning chuck fixing device application device in this invention;

[0034] Figure 9 This is a left view of the application device of the thin-walled cylindrical end face positioning chuck fixing device in this invention;

[0035] Figure 10 This is a schematic diagram of the thin-walled cylindrical end face positioning chuck fixing device clamping the workpiece in this invention;

[0036] In the diagram, 100. Drive device, 110. Telescopic drive mechanism, 111. Telescopic rod, 112. Telescopic power mechanism, 120. Rotating mechanism, 220. Claw assembly, 221. Claw connecting rod, 222. Connecting rod support, 223. Claw, 224. Clamping block, 225. Connecting block, 310. Claw, 311. Base claw, 312. Inner support claw, 320. Chuck, 330. Chuck end face positioning ring, 340. Limiting block, 341. Air tightness test hole, 410. Turntable connecting plate, 420. Turntable, 2231. Front claw, 2232. Rear claw. Detailed Implementation

[0037] The following is combined Figures 1 to 10 Specific embodiments of the present invention will be described below.

[0038] Example 1:

[0039] Thin-walled cylindrical end face positioning chuck fixing device, refer to Figures 1-3 , Figure 6 ,include:

[0040] Drive device 100, the drive device 100 including telescopic drive mechanism 110,

[0041] The workpiece inner wall clamping assembly includes a clamping claw assembly 220 hinged to the power output end of the telescopic drive mechanism 110. The clamping claw assembly 220 includes a clamping claw connecting rod 221, a connecting rod support 222 hinged to the clamping claw connecting rod 221 for supporting the clamping claw connecting rod 221, and a clamping claw 223 disposed at the end of the clamping claw connecting rod 221 for clamping the workpiece wall.

[0042] It also includes a workpiece end face support assembly, which includes a claw 310 for forming support for the outer wall of the workpiece;

[0043] The forces exerted by the pressure claw 223 and the clamping claw 310 are distributed at intervals on the end face of the thin-walled cylindrical component.

[0044] The specific operation process of the thin-walled cylindrical end face positioning chuck fixing device in this embodiment is as follows: In this embodiment, the power output end of the telescopic drive mechanism 110 is hinged to the pressure claw assembly 220, so that the pressure claw 223 can open and close under the action of the drive device 100. The opening and closing angle of the pressure claw connecting rod 221 is controlled by the different telescopic heights of the telescopic rod 111, so that the pressure of the pressure claw 223 pressing down on the inner wall of the workpiece is controllable. The chuck 310 supports the end face of the workpiece and the inner circle of the end face. In particular, the force of the pressure claw 223 and the chuck 310 is distributed at intervals on the end face of the thin-walled cylindrical part, thereby ensuring that the position of the workpiece will not change after the positioning chuck fixing device clamps the workpiece, and also ensuring that the workpiece will not be deformed after clamping.

[0045] Example 2:

[0046] Based on Example 1, referring to Figure 4-5 , Figure 10 The pressure claw 223 includes a front pressure claw 2231 and a rear pressure claw 2232. Under the control of the drive device, the pressure claw 223 performs opening and closing movements. When the front pressure claw 2231 contacts the inner wall, the opening and closing angle of the pressure claw connecting rod 221 is adjusted by the telescopic rod 111 at different heights, so that the rear pressure claw 2232 slowly fits against the inner wall of the workpiece.

[0047] In some embodiments, the inner wall shape of the workpiece end is not a continuous plane. By implementing the front pressure claw 2231 and the rear pressure claw 2232, the inner wall of the workpiece end face can be pressed at different positions.

[0048] Example 3:

[0049] Based on the above embodiments, referring to Figure 4 , Figure 10 A clamping block 224 is provided at the end of the clamping jaw 223. To further ensure a more uniform force distribution on the workpiece and prevent deformation of the workpiece's inner wall, the clamping block 224 mounted on the front clamping jaw 2231 is rectangular with an arc-shaped front end; the clamping block 224 on the rear clamping jaw 2232 is an irregular pentagon, with the side closest to the front clamping jaw 2231 consisting of two consecutive inclined planes at different angles. The clamping block 224 assists the clamping jaw 223 in clamping the part from the inside. Because the diameter of the inner wall of the thin-walled cylinder decreases from large to small when the two end holes shrink, and the dimensions of different parts are different, setting two clamping blocks with different shapes allows for a tighter fit between the part and the limiting block 340 on the chuck.

[0050] Example 4:

[0051] Based on Example 1, referring to Figure 1The telescopic drive mechanism 110 includes a telescopic rod 111 connected to the end of the pressure claw assembly 220 to move the pressure claw connecting rod 221, and a drive mechanism 120 for driving the telescopic rod 111 to extend and retract. Under the control of the drive mechanism, the telescopic rod causes the pressure claw connecting rod 221 to perform a certain opening and closing movement. Different extension and retraction heights of the telescopic rod control the opening and closing angle of the pressure claw connecting rod 221.

[0052] The driving mechanism described in this invention can be a pneumatic cylinder or a hydraulic cylinder, or other devices capable of achieving a driving effect.

[0053] Example 5:

[0054] Based on the above embodiments, referring to Figure 4 , Figure 10 To accommodate workpieces with different inner wall shapes, the pressure claw connecting rod 221 and the connecting rod support 222 are directly provided with connecting blocks 225 that are respectively hinged to the pressure claw connecting rod 221 and the connecting rod support 222. Through the connecting blocks 225, the position variation range of the pressure claw 223 is wider.

[0055] Example 6:

[0056] Based on Example 1, referring to Figure 6-7 The claw 310 is positioned on the chuck 320 and is limited by the chuck end face positioning ring 330. The position of the claw 310 is adjustable.

[0057] The chuck 310 includes a base chuck 311 and an inner support fan chuck 312 disposed on the base chuck 311.

[0058] like Figure 10 Adjust the position of the base claw 311 to change the size of the inner hole of the workpiece end face supported by the inner support claw 312, and fix and radially position the inner hole of the workpiece end face for workpieces of different specifications.

[0059] When the workpiece's axis and the chuck's axis are aligned, slowly move the workpiece to the chuck jaw 310. Once the workpiece's end face contacts the limit block 340, the workpiece stops moving. The chuck then begins controlling the movement of the base jaws. When the outer circle of the inner support jaw contacts the inner hole of the workpiece's end face and reaches the position limited by the chuck's end face positioning ring, the base jaws stop moving. The fixing of the end face inner hole and radial positioning are then complete.

[0060] Based on the diameter of the inner hole on the end face of the thin-walled part, adjust or select the appropriate chuck 310 for the workpiece size. The chuck end face positioning ring limits the position of the chuck 310 to prevent sudden changes in the position of the chuck 310 from deforming the inner hole on the end face of the workpiece.

[0061] Example 7:

[0062] Based on Example 1, referring to Figure 6-7 A limit block 340 is provided on the end face positioning ring 330 of the chuck, and an airtightness detection hole 341 is provided on the limit block 340.

[0063] First, position and clamp the left end face of the workpiece against the left limit block 340, and the end face of the workpiece will block the airtightness detection hole on the left limit block 340. Secondly, repeat the above operation for the right end face. At this time, the end faces at both ends of the workpiece block the airtightness detection holes. Open the switch controlling the airtightness detection holes to check whether the end faces of the workpiece are properly clamped. If properly clamped, the airtightness detection is qualified; if not properly clamped, the airtightness detection is unqualified and re-clamping is required.

[0064] Embodiment 8:

[0065] On the basis of Embodiment 1, refer to Figure 7 A plurality of sets of jaw assemblies 220 are provided, and the plurality of sets of jaw assemblies 220 are evenly distributed at equal angles with the power output end of the telescopic drive mechanism 110 as the center.

[0066] The chuck 320 is provided with a plurality of sets of jaws 310, and the plurality of sets of jaws 310 are evenly distributed on the chuck with the center of the chuck as the center.

[0067] To improve the clamping effect of the fixture, a plurality of sets of jaw assemblies 220 are provided, and the plurality of sets of jaw assemblies 220 are evenly distributed at equal angles with the power output end of the pressing drive device as the center. The chuck is provided with a plurality of sets of jaws 310, and the plurality of sets of jaws 310 are evenly distributed on the chuck with the center of the chuck as the center. One set of the jaw assemblies 220 and the jaws 310 adjacent to the left and right form a set of workpiece fixture assemblies. For example, the thin-walled cylinder end face positioning chuck fixing device is provided with a total of three sets of jaw assemblies 220 and six sets of jaws 310. After the end face positioning chuck fixing device fixes the workpiece, on the workpiece, one set of the jaw assemblies 220 and the jaws 310 adjacent to the left and right form a set of workpiece fixture assemblies. The clamping force between the inner wall of the workpiece and the end face of the workpiece is formed between the three sets of workpiece fixture assemblies, clamping the workpiece more firmly.

[0068] Embodiment 9:

[0069] On the basis of Embodiment 1, refer to Figures 8-10 The application device further includes a turntable 420 connected to the chuck 320 through a turntable connecting disk 410 on the basis of the thin-walled cylinder end face positioning chuck fixing device. The turntable connecting disk 410 is fixedly connected to the drive device 100, and a rotating mechanism 120 driven by a rotating drive device is provided on the drive device 100.

[0070] The rotary drive unit of the drive device drives the rotary mechanism 120 to rotate, and the turntable connecting plate mounted on the rotary mechanism and the chuck connected to the turntable connecting plate 410 also rotate rapidly to perform workpiece processing. This application device is used to clamp thin-walled cylindrical parts and is applied to machine tools to realize the rotation of thin-walled cylindrical parts, enabling the machine tool to perform drilling, tapping, reaming, milling and other machining operations on thin-walled cylindrical parts. This application device is particularly suitable for machining large thin-walled cylindrical parts (such as shells with a length of 1200mm to 4800mm; shell outer diameter φ290mm to φ1000mm, angular deviation not greater than ±1ˊ), achieving high-precision machining by ensuring firm positioning of the part during rotation, preventing positional displacement, minimizing part disturbance, preventing part deformation.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thin-walled cylindrical component end face positioning chuck fixing device, comprising: A drive device (100) includes a telescopic drive mechanism (110). The workpiece inner wall clamping assembly includes a clamping claw assembly (220) hinged to the power output end of the telescopic drive mechanism (110). The clamping claw assembly (220) includes a clamping claw connecting rod (221), a connecting rod support (222) hinged to the clamping claw connecting rod (221) for supporting the clamping claw connecting rod (221), and a clamping claw (223) provided at the end of the clamping claw connecting rod (221) for clamping the workpiece wall. The feature is that it further includes a workpiece end face support assembly, the workpiece end face support assembly including a jaw (310) for supporting the workpiece end face; the forces of the pressure jaw (223) and the jaw (310) are distributed at intervals on the thin-walled cylindrical end face; the pressure jaw (223) includes a front pressure jaw (2231) and a rear pressure jaw (2232); a clamping block (224) is provided at the end of the pressure jaw (223); The telescopic drive mechanism (110) includes: a telescopic rod (111) connected to the end of the pressure claw assembly (220) to move the pressure claw connecting rod (221), and a telescopic power mechanism (112) for driving the telescopic rod (111) to telescopically move. A connecting block (225) is provided between the pressure claw connecting rod (221) and the connecting rod support (222), which are respectively hinged to the pressure claw connecting rod (221) and the connecting rod support (222).

2. The thin-walled cylindrical end face positioning chuck fixing device as described in claim 1, characterized in that, The claw (310) is positioned on the chuck (320) and limited by the chuck end face positioning ring (330). The position of the claw (310) is adjustable.

3. The thin-walled cylindrical end face positioning chuck fixing device as described in claim 1, characterized in that, The claw (310) includes a base claw (311) and an inner support claw (312) disposed on the base claw (311) for supporting the end face port of the thin-walled cylindrical component.

4. The thin-walled cylindrical end face positioning chuck fixing device as described in claim 2, characterized in that, A limiting block (340) is provided on the chuck end face positioning ring (330), and an airtightness detection hole (341) is provided on the limiting block (340).

5. The thin-walled cylindrical end face positioning chuck fixing device as described in claim 2, characterized in that, The pressure claw assembly (220) is configured in multiple groups, and the multiple groups of pressure claw assemblies (220) are evenly distributed with the power output end of the telescopic drive mechanism (110) as the center and the included angles are equal. The chuck (320) is provided with multiple sets of jaws (310), and the multiple sets of jaws (310) are evenly distributed on the chuck with the center of the chuck as the center; A set of clamping jaw assemblies (220) forms a set of clamping forces with the nearest adjacent jaws (310) on the left and right.

6. An application device for a thin-walled cylindrical component end face positioning chuck fixing device, characterized in that, Based on the thin-walled cylindrical end face positioning chuck fixing device according to any one of claims 1 to 5, the application device further includes a turntable (420) connected to the chuck (320) via a turntable connecting plate (410); a drive device (100) is installed in the turntable (420), and a rotating mechanism (120) is provided on the drive device (100) to achieve rotation by a rotary drive device.

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