Welding fixture for dual-mass flywheel part

Abstract

The invention discloses a welding fixture for a dual-mass flywheel part, and relates to the technical field of flywheel fixtures, the welding fixture comprises a mounting unit, a clamping table and a control module arranged on the clamping table; the main clamping unit comprises a lower clamping assembly arranged on the clamping table and an upper clamping assembly arranged on the clamping table and matched with the lower clamping assembly; and the auxiliary clamping unit comprises a rotating table rotationally arranged on the clamping table, an auxiliary clamping assembly arranged on the rotating table and a protection piece arranged on the clamping table. According to the welding fixture for the dual-mass flywheel part, by arranging the main clamping unit and the auxiliary clamping unit, a dual-mass flywheel is horizontally clamped at multiple points, welding points on the surface of the dual-mass flywheel are conveniently welded, high-precision machining of the flywheel by workers is conveniently achieved, meanwhile, the contact area of the dual-mass flywheel and the fixture is reduced through two-way clamping, and the machining precision of the dual-mass flywheel is improved. And thermal deformation of the flywheel in the welding process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of flywheel fixtures, and in particular to a welding fixture for dual-mass flywheel parts. Background Art

[0002] The dual-mass flywheel is an important component in a vehicle transmission system. It is designed to reduce the vibration and impact of the engine torque and improve driving smoothness and comfort. The dual-mass flywheel is mainly manufactured by stamping and forging. However, as the flywheel structure becomes more sophisticated and complex, the design and use of welding fixtures become very critical when manufacturing dual-mass flywheel parts.

[0003] The dual-mass flywheel is a high-precision component. The welding fixture must be able to ensure accurate positioning and stable clamping of the parts during the welding process to prevent welding deformation or errors. At the same time, heat is generated during the welding process, which can easily cause thermal deformation of the dual-mass flywheel parts.

[0004] The existing flywheel fixture mainly clamps the flywheel on a plane, which cannot make the multi-sided weld points of the flywheel at the same time at the welding processing point, making it inconvenient for workers to perform high-precision flywheel processing. In addition, the contact area between the fixture and the flywheel is too large, which easily causes thermal deformation of the flywheel. Summary of the invention

[0005] In view of the problems existing in the welding fixture of the above-mentioned existing dual-mass flywheel parts, the present invention is proposed.

[0006] Therefore, the present invention provides a welding fixture for dual-mass flywheel parts, the purpose of which is to solve the problem that the existing flywheel fixture mainly clamps the flywheel in a plane, cannot make the multi-sided weld points of the flywheel at the same time at the welding processing points, is not convenient for the staff to perform high-precision flywheel processing, and the contact area between the fixture and the flywheel is too large, which easily causes thermal deformation of the flywheel.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a welding fixture for dual-mass flywheel parts, comprising a mounting unit, a main clamping unit, and a secondary clamping unit.

[0008] Among them, the installation unit includes a clamping table and a control module arranged on the clamping table; the main clamping unit includes a lower clamping assembly arranged on the clamping table, and an upper clamping assembly arranged on the clamping table and coordinated with the lower clamping assembly; and the auxiliary clamping unit includes a rotating table rotatably arranged on the clamping table, an auxiliary clamping assembly arranged on the rotating table, and a protective member arranged on the clamping table.

[0009] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the lower clamping assembly includes a cylinder mounting seat arranged on the clamping platform, a lifting part arranged on the cylinder mounting seat, and a lower clamping part arranged on the lifting part.

[0010] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the upper clamping assembly includes an upper clamping assembly mounting seat arranged on the clamping platform, an upper clamping assembly driving part rotatably arranged on the upper clamping assembly mounting seat, and an upper clamp part arranged on the upper clamping assembly driving part.

[0011] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the auxiliary clamping assembly includes a rotating clamping seat arranged on the rotating table, a lower positioning seat arranged on the rotating clamping seat, a positioning drive part arranged on the lower positioning seat, an upper positioning seat arranged on the positioning drive part, and a positioning fixture part arranged on the upper positioning seat.

[0012] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the lifting part includes a lifting cylinder arranged on the clamping platform, a guide plate arranged on the cylinder mounting seat, and a lifting seat arranged on the lifting cylinder and slidably arranged on the guide plate.

[0013] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the lower clamping part includes an adjustable mounting rod arranged on the lifting seat, a lower clamp mounting plate arranged on the adjustable mounting rod, and a lower clamp arranged on the lower clamp mounting plate.

[0014] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the upper fixture part includes an upper fixture mounting plate rotatably arranged on the upper clamping assembly mounting seat, a lateral clamp arranged on the upper fixture mounting plate, and a main clamp arranged on the upper fixture mounting plate and docked with the lower clamping part.

[0015] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the positioning fixture part includes an adjusting motor arranged on the upper positioning seat, a positioning rotating seat arranged at the driving end of the adjusting motor and rotatably connected to the upper positioning seat, and a positioning block arranged on the positioning rotating seat.

[0016] As a preferred solution of the welding fixture of the dual-mass flywheel parts described in the present invention, the upper clamping assembly also includes a displacement locator 1 arranged on the upper clamping assembly mounting seat.

[0017] As a preferred solution of the welding fixture of the dual-mass flywheel parts of the present invention, the auxiliary clamping assembly also includes a displacement locator 2 arranged on the rotating clamping seat.

[0018] The beneficial effects of the present invention are as follows: by setting up a main clamping unit and an auxiliary clamping unit, the dual-mass flywheel can be horizontally clamped at multiple points, which facilitates welding of welding points on the surface of the dual-mass flywheel and facilitates workers to achieve high-precision processing of the flywheel. At the same time, the two-way clamping reduces the contact area between the dual-mass flywheel and the fixture, avoiding thermal deformation of the flywheel during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the dual-mass flywheel component of the present invention in a clamped state by a welding fixture.

[0021] Figure 2 It is a schematic diagram of the overall structure of the welding fixture of the dual-mass flywheel parts of the present invention in a non-clamping state.

[0022] Figure 3 It is a structural schematic diagram of the main clamping unit in the welding fixture of the dual-mass flywheel parts of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the auxiliary clamping unit in the welding fixture of the dual-mass flywheel parts of the present invention.

[0024] Figure 5 The main view of the main clamping unit in the welding fixture of the dual-mass flywheel part of the present invention is Figure 1 .

[0025] Figure 6 It is a front view of the auxiliary clamping unit in the welding fixture of the dual-mass flywheel part of the present invention.

[0026] Figure 7 The main view of the main clamping unit in the welding fixture of the dual-mass flywheel part of the present invention is Figure 2 .

[0027] Figure 8 A top view of the welding fixture for the dual mass flywheel parts of the present invention Figure 1 .

[0028] Fig. 9 A top view of the welding fixture for the dual mass flywheel parts of the present invention Figure 2.

[0029] Description of the drawings: 100, mounting unit; 101, clamping table; 102, control module; 103, pulley; 200, main clamping unit; 201, lower clamping assembly; 201a, cylinder mounting seat; 201b, lifting part; 201b-1, lifting cylinder; 201b-2, guide plate; 201b-3, lifting seat; 201c, lower clamping part; 201c-1, adjustable mounting rod; 201c-2, lower fixture mounting plate; 201c-3, lower fixture; 202, upper clamping assembly; 202a, upper clamping assembly mounting seat; 202b, displacement positioner 1; 202c, upper Clamp part; 202c-1, upper clamp mounting plate; 202c-2, lateral clamp; 202c-3, main clamp; 202d, upper clamping assembly drive part; 300, auxiliary clamping unit; 301, rotating table; 302, auxiliary clamping assembly; 302a, rotating clamping seat; 302b, displacement positioner 2; 302c, lower positioning seat; 302d, positioning drive part; 302e, upper positioning seat; 302f, positioning clamp part; 302f-1, adjusting motor; 302f-2, positioning rotating seat; 302f-3, positioning block; 303, protective part; 400, dual-mass flywheel. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1, reference Figure 1-Figure 4, which is the first embodiment of the present invention, provides a welding fixture for dual-mass flywheel parts, including a mounting unit 100, a main clamping unit 200, and a secondary clamping unit 300.

[0035] The mounting unit 100 includes a clamping table 101 and a control module 102 disposed on the clamping table 101. The control module 102 performs linkage control on the main clamping unit 200 and the electric control drive module inside the auxiliary clamping unit 300, introduces intelligent technology and automation equipment inside the control module 102, and utilizes the numerical control solution in the prior art to realize the automatic control of the welding fixture of the dual mass flywheel 400 parts, thereby improving the production and manufacturing automation effect of the dual mass flywheel 400.

[0036] Preferably, a machine vision system and an automatic control system are introduced into the control module 102 to improve the production efficiency of dual-mass flywheel parts, ensure the consistency of the production level of dual-mass flywheel parts, and reduce the generation of defective products.

[0037] The main clamping unit 200 includes a lower clamping assembly 201 disposed on the clamping platform 101, and an upper clamping assembly 202 disposed on the clamping platform 101 and coordinated with the lower clamping assembly 201. The lower clamping assembly 201 and the upper clamping assembly 202 cooperate with each other to achieve the main clamping effect on the dual mass flywheel 400.

[0038] The auxiliary clamping unit 300 includes a rotating table 301 rotatably arranged on the clamping table 101, an auxiliary clamping assembly 302 arranged on the rotating table 301, and a protective member 303 arranged on the clamping table 101. The auxiliary clamping assembly 302 cooperates with the main clamping unit 200 to clamp the dual mass flywheel 400, and when the dual mass flywheel 400 needs to adjust the welding point, the position of the auxiliary clamping assembly 302 is adjusted by using the rotating table 301; by setting the rotating table 301, the auxiliary clamping assembly 302 is driven to rotate relative to the clamping table 101, so that when the dual mass flywheel 400 is clamped and positioned, the position of the dual mass flywheel 400 relative to the clamping table 101 is adjusted, or the position of the dual mass flywheel 400 is adjusted during the welding process, thereby improving the working flexibility of the welding fixture and meeting the high-precision welding point positioning requirements of the staff.

[0039] Preferably, by respectively arranging a main clamping unit 200 and an auxiliary clamping unit 300 at both ends of the clamping platform 101, multi-point horizontal clamping of the dual mass flywheel 400 is achieved, which facilitates welding of welding points on the surface of the dual mass flywheel 400 and facilitates the staff to achieve high-precision processing of the flywheel. At the same time, the two-way clamping reduces the contact area between the dual mass flywheel and the fixture, avoiding thermal deformation of the flywheel during welding.

[0040] Preferably, a pulley 103 is provided on the clamping table 101 to facilitate shifting of the clamping table 101 and conversion of the processing point of the dual mass flywheel 400. At the same time, the pulley 103 is configured as a lockable structure to ensure the stability of the clamping table 101 during the processing.

[0041] Furthermore, the lower clamping assembly 201 includes a cylinder mounting seat 201a disposed on the clamping platform 101, a lifting portion 201b disposed on the cylinder mounting seat 201a, and a lower clamping portion 201c disposed on the lifting portion 201b. The lifting portion 201b drives the lower clamping portion 201c to change its position height relative to the clamping platform 101, thereby improving the flexibility of the welding fixture, facilitating the clamping and fixing of the lower portion of the dual mass flywheel 400 of different sizes, and facilitating the adjustment of the welding point height of the dual mass flywheel 400.

[0042] Furthermore, the upper clamping assembly 202 includes an upper clamping assembly mounting seat 202a arranged on the clamping platform 101, an upper clamping assembly driving portion 202d rotatably arranged on the upper clamping assembly mounting seat 202a, and an upper clamping portion 202c arranged on the upper clamping assembly driving portion 202d. The upper clamping assembly driving portion 202d is arranged to drive the upper clamping portion 202c to rotate relative to the upper clamping assembly mounting seat 202a, thereby facilitating the clamping of the dual mass flywheel 400. When the upper clamping portion 202c is close to the upper clamping assembly mounting seat 202a, it means that the upper clamping portion 202c cooperates with the lower clamping portion 201c to achieve the clamping and fixation of the dual mass flywheel 400.

[0043] Furthermore, the auxiliary clamping assembly 302 includes a rotating clamping seat 302a arranged on the rotating table 301, a lower positioning seat 302c arranged on the rotating clamping seat 302a, a positioning driving part 302d arranged on the lower positioning seat 302c, an upper positioning seat 302e arranged on the positioning driving part 302d, and a positioning fixture part 302f arranged on the upper positioning seat 302e.

[0044] During use, before welding the dual mass flywheel 400, the main clamping unit 200 first realizes the main clamping and positioning of the dual mass flywheel 400. After the lower clamping assembly 201 and the upper clamping assembly 202 realize the main positioning of the dual mass flywheel 400, the auxiliary clamping assembly 302 is used to further clamp and fix the dual mass flywheel 400 from another direction. If the posture of the dual mass flywheel 400 needs to be adjusted, the main clamping unit 200 is controlled to be loosened, and the rotating table 301 at the lower part of the auxiliary clamping assembly 302 is used to adjust the position of the dual mass flywheel 400, and then The main clamping unit 200 is then used to clamp and fix the dual mass flywheel 400 at two points. By setting the main clamping unit 200 and the auxiliary clamping unit 300, the dual mass flywheel 400 can be horizontally clamped at multiple points, which facilitates welding of the welding points on the surface of the dual mass flywheel 400 and facilitates the staff to achieve high-precision processing of the flywheel. At the same time, the two-way clamping reduces the contact area between the dual mass flywheel and the fixture, avoiding thermal deformation of the flywheel during welding, which can effectively improve the production quality and production efficiency of the dual mass flywheel 400, and reduce the cost and risk in the manufacturing process.

[0045] Example 2, reference Figure 1-Figure 7 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the lifting part 201b includes a lifting cylinder 201b-1 disposed on the clamping platform 101, a guide plate 201b-2 disposed on the cylinder mounting seat 201a, and a lifting seat 201b-3 disposed on the lifting cylinder 201b-1 and slidably disposed on the guide plate 201b-2. The lifting cylinder 201b-1 can drive the lifting seat 201b-3 to slide relative to the guide plate 201b-2, thereby driving the position height of the lower clamping part 201c relative to the clamping platform 101 to change, thereby improving the flexibility of the welding fixture, facilitating the clamping and fixing of the lower part of the dual-mass flywheel 400 of different sizes, and facilitating the adjustment of the welding point height of the dual-mass flywheel 400.

[0046] Compared with the embodiment 1, the lower clamping part 201c further comprises an adjustable mounting rod 201c-1 disposed on the lifting seat 201b-3, a lower fixture mounting plate 201c-2 disposed on the adjustable mounting rod 201c-1, and a lower fixture 201c-3 disposed on the lower fixture mounting plate 201c-2. The adjustable mounting rod 201c-1 is provided to facilitate adjusting the installation position of the lower fixture 201c-3 relative to the lifting seat 201b-3, so as to facilitate clamping and limiting the dual mass flywheel 400 of different sizes.

[0047] Furthermore, the upper clamp portion 202c includes an upper clamp mounting plate 202c-1 rotatably mounted on the upper clamp assembly mounting seat 202a, a lateral clamp 202c-2 mounted on the upper clamp mounting plate 202c-1, and a main clamp 202c-3 mounted on the upper clamp mounting plate 202c-1 and docked with the lower clamp portion 201c. The multiple arrangements of the main clamp 202c-3 and the lateral clamp 202c-2 achieve a clamping effect on the complex structure of the dual mass flywheel 400 and improve the clamping accuracy of the dual mass flywheel 400.

[0048] Furthermore, the positioning fixture part 302f includes an adjustment motor 302f-1 disposed on the upper positioning seat 302e, a positioning rotating seat 302f-2 disposed at the driving end of the adjustment motor 302f-1 and rotatably connected to the upper positioning seat 302e, and a positioning block 302f-3 disposed on the positioning rotating seat 302f-2. The adjustment motor 302f-1 can drive the positioning rotating seat 302f-2 to rotate relative to the upper positioning seat 302e, thereby changing the positional relationship of the positioning block 302f-3 relative to the upper positioning seat 302e, further improving the clamping stability of the complex structure of the dual mass flywheel 400, and at the same time, the adjustment motor 302f-1 is connected to the control module 102 to realize the automatic numerical control of the overall adjustment process.

[0049] During use, before welding the dual mass flywheel 400, the main clamping unit 200 first realizes the main clamping and positioning of the dual mass flywheel 400. After the lower clamping assembly 201 and the upper clamping assembly 202 realize the main positioning of the dual mass flywheel 400, the auxiliary clamping assembly 302 is used to further clamp and fix the dual mass flywheel 400 from another direction. If the posture of the dual mass flywheel 400 needs to be adjusted, the main clamping unit 200 is controlled to be loosened, and the rotating table 301 at the lower part of the auxiliary clamping assembly 302 is used to adjust the position of the dual mass flywheel 400, and then The main clamping unit 200 is then used to clamp and fix the dual mass flywheel 400 at two points. By setting the main clamping unit 200 and the auxiliary clamping unit 300, the dual mass flywheel 400 can be horizontally clamped at multiple points, which facilitates welding of the welding points on the surface of the dual mass flywheel 400 and facilitates the staff to achieve high-precision processing of the flywheel. At the same time, the two-way clamping reduces the contact area between the dual mass flywheel and the fixture, avoiding thermal deformation of the flywheel during welding, which can effectively improve the production quality and production efficiency of the dual mass flywheel 400, and reduce the cost and risk in the manufacturing process.

[0050] The remaining structures are the same as those of Example 1.

[0051] Example 3, reference Figure 1-Figure 9, which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the upper clamping assembly 202 further includes a displacement locator 202b disposed on the upper clamping assembly mounting seat 202a. The displacement locator 202b is internally provided with a machine vision monitoring system, which can monitor the clamping posture of the dual-mass flywheel 400 on the upper clamping assembly 202, thereby improving the remote worker's processing monitoring of the welding clamping site and improving the automation efficiency of the welding process.

[0052] Compared with Example 2, the secondary clamping assembly 302 further includes a displacement positioner 2 302b disposed on the rotating clamping seat 302a. Similarly, a machine vision monitoring system is disposed inside the displacement positioner 2 302b, which can monitor the clamping posture of the dual-mass flywheel 400 on the secondary clamping assembly 302, thereby improving the remote worker's processing monitoring of the welding clamping site, improving the automation efficiency of the welding process, facilitating high-precision processing of the dual-mass flywheel 400, and improving the numerical control effect of the welding fixture.

[0053] During use, before welding the dual mass flywheel 400, the main clamping unit 200 first realizes the main clamping and positioning of the dual mass flywheel 400. After the lower clamping assembly 201 and the upper clamping assembly 202 realize the main positioning of the dual mass flywheel 400, the auxiliary clamping assembly 302 is used to further clamp and fix the dual mass flywheel 400 from another direction. If the posture of the dual mass flywheel 400 needs to be adjusted, the main clamping unit 200 is controlled to be loosened, and the rotating table 301 at the lower part of the auxiliary clamping assembly 302 is used to adjust the position of the dual mass flywheel 400, and then The main clamping unit 200 is then used to clamp and fix the dual mass flywheel 400 at two points. By setting the main clamping unit 200 and the auxiliary clamping unit 300, the dual mass flywheel 400 can be horizontally clamped at multiple points, which facilitates welding of the welding points on the surface of the dual mass flywheel 400 and facilitates the staff to achieve high-precision processing of the flywheel. At the same time, the two-way clamping reduces the contact area between the dual mass flywheel and the fixture, avoiding thermal deformation of the flywheel during welding, which can effectively improve the production quality and production efficiency of the dual mass flywheel 400, and reduce the cost and risk in the manufacturing process.

[0054] The remaining structure is the same as that of Example 2.

[0055] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A welding fixture for dual-mass flywheel parts, characterized in that: include, The mounting unit (100) comprises a clamping table (101) and a control module (102) arranged on the clamping table (101); A main clamping unit (200) comprises a lower clamping assembly (201) arranged on the clamping platform (101), and an upper clamping assembly (202) arranged on the clamping platform (101) and arranged in cooperation with the lower clamping assembly (201); and, The auxiliary clamping unit (300) comprises a rotating table (301) rotatably arranged on the clamping table (101), an auxiliary clamping assembly (302) arranged on the rotating table (301), and a protective member (303) arranged on the clamping table (101).

2. The welding fixture for dual mass flywheel parts according to claim 1 is characterized in that: The lower clamping assembly (201) comprises a cylinder mounting seat (201a) arranged on the clamping platform (101), a lifting portion (201b) arranged on the cylinder mounting seat (201a), and a lower clamping portion (201c) arranged on the lifting portion (201b).

3. The welding fixture for dual mass flywheel parts according to claim 2, characterized in that: The upper clamping assembly (202) comprises an upper clamping assembly mounting seat (202a) arranged on the clamping platform (101), an upper clamping assembly driving portion (202d) rotatably arranged on the upper clamping assembly mounting seat (202a), and an upper clamp portion (202c) arranged on the upper clamping assembly driving portion (202d).

4. The welding fixture for dual mass flywheel parts according to claim 3 is characterized in that: The auxiliary clamping assembly (302) comprises a rotating clamping seat (302a) arranged on the rotating table (301), a lower positioning seat (302c) arranged on the rotating clamping seat (302a), a positioning drive part (302d) arranged on the lower positioning seat (302c), an upper positioning seat (302e) arranged on the positioning drive part (302d), and a positioning fixture part (302f) arranged on the upper positioning seat (302e).

5. The welding fixture for dual mass flywheel parts according to any one of claims 2 to 4, characterized in that: The lifting part (201b) comprises a lifting cylinder (201b-1) arranged on the clamping platform (101), a guide plate (201b-2) arranged on the cylinder mounting seat (201a), and a lifting seat (201b-3) arranged on the lifting cylinder (201b-1) and slidably arranged on the guide plate (201b-2).

6. The welding fixture for dual mass flywheel parts according to claim 5, characterized in that: The lower clamping portion (201c) comprises an adjustable mounting rod (201c-1) arranged on the lifting seat (201b-3), a lower clamp mounting plate (201c-2) arranged on the adjustable mounting rod (201c-1), and a lower clamp (201c-3) arranged on the lower clamp mounting plate (201c-2).

7. The welding fixture for dual mass flywheel parts according to claim 3 or 4, characterized in that: The upper clamp portion (202c) comprises an upper clamp mounting plate (202c-1) rotatably disposed on the upper clamping assembly mounting seat (202a), a lateral clamp (202c-2) disposed on the upper clamp mounting plate (202c-1), and a main clamp (202c-3) disposed on the upper clamp mounting plate (202c-1) and docked with the lower clamp portion (201c).

8. The welding fixture for dual mass flywheel parts according to claim 4, characterized in that: The positioning fixture part (302f) comprises an adjusting motor (302f-1) arranged on the upper positioning seat (302e), a positioning rotating seat (302f-2) arranged at the driving end of the adjusting motor (302f-1) and rotatably connected to the upper positioning seat (302e), and a positioning block (302f-3) arranged on the positioning rotating seat (302f-2).

9. The welding fixture for dual mass flywheel parts according to claim 3, characterized in that: The upper clamping assembly (202) further comprises a displacement positioner 1 (202b) arranged on the upper clamping assembly mounting seat (202a).

10. The welding fixture for dual mass flywheel parts according to claim 4, characterized in that: The auxiliary clamping assembly (302) further comprises a second displacement positioner (302b) arranged on the rotating clamping seat (302a).

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