Tool clamp for cutting and machining C-shaped forge piece of large wind power bearing
By designing a multi-functional tooling fixture and utilizing radial clamping and axial support structures, the problem of insufficient clamping force and falling off during the cutting of large wind turbine bearing C-shaped forgings was solved, achieving safe and reliable processing and efficient production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 成都天马精密机械有限公司
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the T-shaped square column tooling fixture is prone to bending during the cutting of large wind turbine bearing C-shaped forgings, resulting in insufficient clamping force, and the upper half of the ring is prone to falling off during cutting, posing safety hazards and tool breakage problems.
A tooling fixture was designed, including a tooling base, a tooling adjustment body, a radial clamping component, and an axial support component. By installing multiple clamps around the outer periphery of the forging on a vertical lathe chuck, the upper half of the ring is fixed by the radial clamping component and the axial support component. Combined with the T-shaped part and toothed surface structure, the bending strength and installation flexibility are improved, and it can adapt to forgings of different diameters and heights.
It effectively prevents the upper half of the circle from being thrown out or falling during cutting, eliminating safety hazards, improving processing efficiency, reducing tool wear, expanding the processing range, and adapting to the clamping requirements of different machine tools.
Smart Images
Figure CN224169312U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wind turbine bearing processing technology, and in particular to a tooling fixture for cutting and processing large wind turbine bearing C-shaped forgings. Background Technology
[0002] The large wind turbine bearing C-type forging is a two-in-one forging. After fine machining of the inner and outer diameters, it needs to be cut from the inner diameter to the outer diameter along a direction perpendicular to the axis, dividing it into the upper half circle and the lower half circle.
[0003] During the cutting process, tooling fixtures are needed to fix the upper half of the C-shaped forging. The commonly used tooling fixture is a T-shaped square column, with the column head installed on the vertical chuck and the T-shaped part pressed against the outer circumference of the upper half. Multiple T-shaped square columns work together to fix the upper half in the radial direction.
[0004] However, in actual use, due to factors such as installation and cutting force, the T-shaped square column is prone to bending. After bending, the clamping force on the upper half of the circle is insufficient, and the upper half of the circle often falls off and breaks the blade during cutting. Utility Model Content
[0005] To address the issues of radial fixation of the upper half of the C-shaped forging during the cutting process of large wind turbine bearings and tool breakage during cutting, this application provides a tooling fixture for cutting large wind turbine bearing C-shaped forgings.
[0006] The tooling fixture for cutting and machining large wind turbine bearing C-type forgings provided in this application adopts the following technical solution:
[0007] A fixture for cutting large C-shaped forgings of wind turbine bearings is provided. Multiple fixtures are mounted at intervals on a vertical lathe chuck around the outer circumference of the large wind turbine bearing C-shaped forging. The upper and lower halves of the large wind turbine bearing C-shaped forging are specifically divided by the cutting surface. The fixture is used to radially clamp and axially support the upper half of the large wind turbine bearing C-shaped forging. The fixture includes a fixture base, a fixture adjustment body, radial clamping components, and axial support components; the fixture base is mounted on the vertical lathe chuck. Above; the tooling adjustment body is installed on the side of the tooling base close to the large wind turbine bearing C-shaped forging, and the tooling adjustment body has a radial boss protruding on the side close to the large wind turbine bearing C-shaped forging; the radial clamping member is horizontally connected to the upper end of the tooling adjustment body, and the end of the radial clamping member is pressed against the outer circumference of the upper half of the large wind turbine bearing C-shaped forging; the axial support member is vertically connected to the radial boss of the adjustment body, and the upper end of the axial support member is supported under the boss of the upper half of the large wind turbine bearing C-shaped forging.
[0008] By adopting the above technical solution, during the processing, depending on the diameter of the large wind turbine bearing C-shaped forging to be processed, four, six, or eight tooling fixtures are installed at equal intervals around the outer circumference of the large wind turbine bearing C-shaped forging on the vertical lathe chuck. During installation, it is important to ensure that the end of the radial clamping member abuts against the outer circumference of the upper half of the large wind turbine bearing C-shaped forging, and the upper end of the axial support member supports the boss under the upper half of the large wind turbine bearing C-shaped forging. After installation, the multiple tooling fixtures can achieve radial clamping and axial support of the upper half of the large wind turbine bearing C-shaped forging, ensuring that the upper half can be effectively cut off and avoiding the problem of the tool falling off and breaking during the cutting of the upper half.
[0009] Optionally, the bottom of the tooling base extends into a T-shaped portion in a direction perpendicular to the central axis of the tooling base. The T-shaped portion and the tooling base together form a T-shape, and fixing holes are provided at both ends of the T-shaped portion in a vertical direction.
[0010] By adopting the above technical solution, the T-shaped part can further improve the bending strength of the tooling base, and also adjust the installation position of the tooling base to adapt to large wind turbine bearing C-shaped forgings of different diameters, thus expanding the diameter processing range.
[0011] Optionally, the tooling adjustment body is mounted on the tooling base by fasteners.
[0012] Optionally, the tooling adjustment body has a row of adjustment holes spaced vertically on the side facing the tooling base; the adjustment holes are threaded holes that mate with fasteners.
[0013] By adopting the above technical solution, the installation position of the tooling adjustment body on the tooling base can be adjusted up and down to adapt to the processing of large wind turbine bearing C-shaped forgings of different heights, thus expanding the range of height processing.
[0014] Optionally, the tooling base has a mounting hole at the position where the fastener is installed; the mounting hole is a through countersunk hole, and the mounting hole is a strip hole, with the long axis of the strip hole along the vertical direction of the tooling base.
[0015] The above technical solution offers three advantages. First, when connecting the tooling adjustment body with fasteners, it is no longer necessary to strictly align the adjustment holes on the tooling adjustment body with the mounting holes on the tooling base, making installation more convenient. Second, the installation of the tooling adjustment body and the tooling base is more secure. Third, during the cutting and machining of large wind turbine bearing C-type forgings, iron filings and coolant splashing are generated. The countersunk mounting holes prevent iron filings and coolant from entering the fastener installation position, thus ensuring that the fasteners always maintain good fastening performance.
[0016] Optionally, the radial clamping member is a radial clamping bolt member, and the axial support member is an axial support bolt member; the tooling adjustment body and the radial boss are provided with through bolt holes corresponding to the radial clamping bolt member and the axial support bolt member; the radial clamping bolt member is threaded into the bolt hole and its end abuts against the outer circumference of the upper half of the large wind turbine bearing C-shaped forging, and the axial support bolt member is threaded into the bolt hole and its upper end is supported under the boss of the upper half of the large wind turbine bearing C-shaped forging.
[0017] By adopting the above technical solution, the radial clamping bolts and axial support bolts can be adjusted appropriately according to the installation situation, so as to better maintain the radial clamping effect and axial support effect on the upper half of the C-shaped forging of large wind turbine bearings.
[0018] Optionally, the contact surfaces of the tooling base and the tooling adjustment body are toothed surfaces.
[0019] Optionally, the end faces of the radial clamping member and the axial support member that contact the upper half of the large wind turbine bearing C-shaped forging are both planar.
[0020] In summary, this application includes at least one of the following beneficial technical effects:
[0021] 1. First, based on the shape and size of the large wind turbine bearing C-type forging, this application designs and manufactures an adjustable cutting fixture. The radial position of the upper half ring is fixed by a radial clamping component to prevent it from being thrown out during cutting, thus eliminating safety hazards. The upper half ring is supported by an axial support component below, which applies upward support force to prevent the upper half ring from falling due to its own weight after cutting, thus preventing tool breakage. This ensures the safety of the separation process of the two large wind turbine bearing C-type forgings, prevents tool breakage, saves tool costs, and improves production efficiency.
[0022] 2. Secondly, the radial clamping parts and axial support parts are installed on the tooling adjustment body. The tooling adjustment body is connected to the tooling base through the toothed surface. Adjusting the upper and lower positions of the toothed surface connection can achieve clamping of products of different heights, resulting in a large processing range. Changing the size of the fixture can achieve a wider range of processing. Different machine tools have different clamping heights, so only the upper and lower adjustments are needed to adjust the force point to the optimal position, and the forging blank can also be firmly clamped. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the tooling fixture in conjunction with the vertical lathe chuck and the large wind turbine bearing C-shaped forging in Embodiment 1 of this application;
[0024] Figure 2 This is a schematic diagram of the tooling fixture in Embodiment 1 of this application;
[0025] Figure 3This is a schematic diagram of the tooling fixture in Embodiment 2 of this application;
[0026] Figure 4 This is a schematic diagram of the upper limit position of the tooling fixture in Embodiment 2 of this application;
[0027] Figure 5 This is a schematic diagram of the lower limit position of the tooling fixture in Embodiment 2 of this application.
[0028] Explanation of reference numerals in the attached drawings: 1. Vertical lathe chuck; 2. Large wind turbine bearing C-type forging; 21. Cut surface; 3. Tooling fixture; 31. Tooling base; 311. T-shaped part; 3111. Fixing hole; 312. Mounting hole; 313. Fastener; 32. Tooling adjustment body; 321. Radial boss; 322. Toothed surface; 323. Adjustment hole; 33. Radial clamping part; 34. Axial support part. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.
[0030] Example 1:
[0031] A tooling fixture for cutting and machining large wind turbine bearing C-type forgings, as described in the reference. Figure 1 There are multiple tooling fixtures 3, which are installed at intervals on the vertical chuck 1 around the outer periphery of the large wind turbine bearing C-type forging 2, and are used to radially clamp and axially support the upper half ring of the large wind turbine bearing C-type forging 2; the upper half ring and the lower half ring of the large wind turbine bearing C-type forging 2 are specifically divided by the cut surface 21.
[0032] Specifically, in combination Figure 2 The tooling fixture 3 includes a tooling base 31, a tooling adjustment body 32, a radial clamping member 33, and an axial support member 34.
[0033] The tooling base 31 is T-shaped and has good bending strength. A T-shaped section 311 extends from the bottom of the tooling base 31 in a direction perpendicular to its central axis, forming a T-shape with the tooling base 31. When installing the tooling base 31, the length direction of the T-shaped section 311 is perpendicular to the central axis of the large wind turbine bearing C-shaped forging 2. Fixing holes 3111 are vertically drilled at both ends of the T-shaped section 311. Bolts or other connecting parts passing through the fixing holes 3111 allow the tooling base 31 to be installed on the vertical lathe chuck 1. The T-shaped section 311 further improves the bending strength of the tooling base 31 and allows for adjustment of its installation position to accommodate large wind turbine bearing C-shaped forgings 2 of different diameters, thus expanding the diameter processing range.
[0034] The tooling adjustment body 32 is cylindrical and is installed on the side of the tooling base 31 near the large wind turbine bearing C-shaped forging 2. The tooling adjustment body 32 is installed on the tooling base 31 by fasteners 313. The fasteners 313 are preferably threaded fasteners 313. The large end of the threaded fastener 313 is located outside the tooling base 31 and the rod part passes through the tooling base 31 and is threaded into the tooling adjustment body 32. The tooling adjustment body 32 has a radial boss 321 protruding on the side near the large wind turbine bearing C-shaped forging 2.
[0035] The radial clamping member 33 is horizontally connected to the upper end of the tooling adjustment body 32, and the end of the radial clamping member 33 is pressed against the outer circumference of the upper half ring of the large wind turbine bearing C-type forging 2; the axial support member 34 is vertically connected to the radial boss 321 of the adjustment body, and the upper end of the axial support member 34 is supported under the boss of the upper half ring of the large wind turbine bearing C-type forging 2.
[0036] With the above setup, during the processing, depending on the diameter of the large wind turbine bearing C-type forging 2 to be processed, four, six, or eight tooling fixtures 3 are installed at equal intervals around the outer periphery of the large wind turbine bearing C-type forging 2 on the vertical lathe chuck 1. During installation, it is important to ensure that the end of the radial clamping member 33 abuts against the outer periphery of the upper half of the large wind turbine bearing C-type forging 2, and the upper end of the axial support member 34 is supported under the boss of the upper half of the large wind turbine bearing C-type forging 2. After installation, the multiple tooling fixtures 3 can achieve radial clamping and axial support of the upper half of the large wind turbine bearing C-type forging 2, ensuring that the upper half can be effectively cut off and avoiding the problem of the tool falling off and breaking during the cutting of the upper half.
[0037] In actual use, due to factors such as the installation of the tooling fixture 3, the flatness of the large wind turbine bearing C-type forging 2, and the flatness of the vertical chuck 1, sometimes the ends of some radial clamping parts 33 and axial support parts 34 cannot effectively contact the upper half of the large wind turbine bearing C-type forging 2, which in turn affects the radial clamping and axial support effect on the upper half of the large wind turbine bearing C-type forging 2.
[0038] To improve the above problems, the radial clamping member 33 is set as a radial clamping bolt member, and the axial support member 34 is set as an axial support bolt member; through bolt holes are opened on the tooling adjustment body 32 and the radial boss 321 corresponding to the radial clamping bolt member and the axial support bolt member; the radial clamping bolt member is threaded into the bolt hole and its end abuts against the outer circumference of the upper half ring of the large wind turbine bearing C-type forging 2, and the axial support bolt member is threaded into the bolt hole and its upper end is supported under the boss of the upper half ring of the large wind turbine bearing C-type forging 2.
[0039] With the above settings, the radial clamping bolts and axial support bolts can be adjusted appropriately according to the installation situation to better maintain the radial clamping effect and axial support effect on the upper half of the large wind turbine bearing C-shaped forging 2.
[0040] The contact surfaces of the tooling base 31 and the tooling adjustment body 32 can be flat or corrugated; preferably, they are toothed surfaces 322. Either the tooling base 31 or the tooling adjustment body 32 can be machined into a toothed surface 322, or both contact surfaces can be machined into a toothed surface 322; the tooth marks of the toothed surface 322 are horizontal. In this way, the tooling adjustment body 32 can be installed more stably on the tooling base 31, and better resist the gravity of the large wind turbine bearing C-shaped forging 2 and the cutting force transmitted by the tool.
[0041] Example 2:
[0042] A tooling fixture for cutting and machining large wind turbine bearing C-type forgings, as described in the reference. Figure 3 The main difference between this embodiment and the first embodiment is that the installation position of the tooling adjustment body 32 on the tooling base 31 can be adjusted up and down to adapt to the processing of large wind turbine bearing C-shaped forgings 2 of different heights, thus expanding the range of height processing.
[0043] Specifically, a row of adjustment holes 323 are vertically spaced on the tooling adjustment body 32 facing the tooling base 31; the adjustment holes 323 are threaded holes that mate with the fasteners 313.
[0044] With the above settings, the height of the tooling adjustment body 32 can be adjusted by connecting the fastener 313 to the adjustment holes 323 of different heights, which is quite convenient.
[0045] Furthermore, a mounting hole 312 is provided at the position where the fastener 313 is installed on the tooling base 31; firstly, the mounting hole 312 is a through countersunk hole, the head of the fastener 313 can enter the countersunk hole and fit against the step of the countersunk hole, and the shank of the fastener 313 can pass through the countersunk hole and be threaded into the adjustment hole 323 of the tooling adjustment body 32; secondly, the mounting hole 312 is a strip hole, and the long axis of the strip hole is along the vertical direction of the tooling base 31.
[0046] Through the above settings, combined with Figure 4 , Figure 5 It has three advantages:
[0047] Firstly, when connecting the tooling adjustment body 32 with the fastener 313, it is no longer necessary to strictly align the adjustment hole 323 on the tooling adjustment body 32 with the mounting hole 312 on the tooling base 31. Since the mounting hole 312 is strip-shaped, as long as the adjustment hole 323 is within the range of the mounting hole 312, the fastener 313 can be inserted to fix the tooling adjustment body 32.
[0048] Secondly, the installation of the tooling adjuster 32 and the tooling base 31 is more secure, such as... Figure 4 and Figure 5 The tooling adjustment body 32 is mounted on the tooling base 31 using two fasteners 313. The tooling adjustment body 32 is located at the upper limit position and the lower limit position, i.e., at the extreme positions of upward and downward adjustment. In common working conditions, it is recommended to secure the tooling adjustment body 32 with two fasteners 313. When the tooling adjustment body 32 is at the upper limit position, the two fasteners 313 are connected to two adjacent adjustment holes 323; when the tooling adjustment body 32 is at the lower limit position, the two fasteners 313 are connected to the two adjustment holes 323 furthest apart. To further improve the installation reliability of the tooling adjustment body 32 and the tooling base 31, the number of fasteners 313 can be increased.
[0049] Thirdly, during the cutting process of the large wind turbine bearing C-type forging 2, iron chips will be generated, and there will also be splashing of cutting coolant. The mounting hole 312 is a countersunk hole, which can prevent iron chips and cutting coolant from entering the mounting position of the fastener 313, thus ensuring that the fastener 313 always has good fastening performance.
[0050] Based on the shape and dimensions of the large wind turbine bearing C-type forging 2, this application designs and manufactures an adjustable cutting fixture 3. A radial clamping member 33 fixes the radial position of the upper half-circle, preventing it from being thrown out during cutting and eliminating safety hazards. An axial support member 34 supports the upper half-circle from below, applying upward support force to prevent it from falling due to its own weight after cutting and causing tool breakage. This ensures safety during the separation process of the two large wind turbine bearing C-type forgings 2, prevents tool breakage, saves tooling costs, and improves production efficiency.
[0051] Radial clamping member 33 and axial support member 34 are mounted on tooling adjustment body 32. Tooling adjustment body 32 is connected to tooling base 31 through toothed surface 322. Adjusting the upper and lower positions of the toothed surface connection can achieve clamping of products of different heights, with a large processing range. Changing the size of the fixture can achieve a larger range of processing.
[0052] Different machine tools have different clamping heights, so the force point can be adjusted to the optimal position simply by adjusting the height, and the forging blank can be firmly clamped. After quenching and tempering, this fixture has high strength and large clamping force. With the increase in clamping strength, the cutting parameters are high and the efficiency is high, which is 3 times that of the original.
[0053] These are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A tooling fixture for cutting large wind turbine bearing C-type forgings, comprising multiple tooling fixtures (3) spaced around the outer periphery of the large wind turbine bearing C-type forging (2) on a vertical lathe chuck (1), wherein the upper and lower halves of the large wind turbine bearing C-type forging (2) are specifically divided by the cutting surface (21), characterized in that: The tooling fixture (3) is used to radially clamp and axially support the upper half ring of the large wind turbine bearing C-type forging (2). The tooling fixture (3) includes a tooling base (31), a tooling adjustment body (32), a radial clamping part (33), and an axial support part (34). The tooling base (31) is mounted on the vertical lathe chuck (1); The tooling adjustment body (32) is installed on the side of the tooling base (31) close to the large wind turbine bearing C-type forging (2), and the tooling adjustment body (32) has a radial boss (321) protruding on the side close to the large wind turbine bearing C-type forging (2). The radial clamping member (33) is horizontally connected to the upper end of the tooling adjustment body (32), and the end of the radial clamping member (33) is pressed against the outer periphery of the upper half of the large wind turbine bearing C-type forging (2); the axial support member (34) is vertically connected to the radial boss (321) of the adjustment body, and the upper end of the axial support member (34) is supported under the boss of the upper half of the large wind turbine bearing C-type forging (2).
2. The tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 1, characterized in that: The bottom of the tooling base (31) extends into a T-shaped part (311) in a direction perpendicular to the central axis of the tooling base (31). The T-shaped part (311) and the tooling base (31) together form a T-shape. Fixing holes (3111) are provided at both ends of the T-shaped part (311) in a vertical direction.
3. The tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 2, characterized in that: The tooling adjustment body (32) is mounted on the tooling base (31) by fasteners (313).
4. The tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 3, characterized in that: The tooling adjustment body (32) has a row of adjustment holes (323) spaced vertically on the side facing the tooling base (31); the adjustment holes (323) are threaded holes that mate with fasteners (313).
5. A tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 4, characterized in that: The tooling base (31) has a mounting hole (312) at the position where the fastener (313) is installed; the mounting hole (312) is a through countersunk hole, and the mounting hole (312) is a strip hole, with the long axis of the strip hole along the vertical direction of the tooling base (31).
6. A tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 1 or 2, characterized in that: The radial clamping member (33) is a radial clamping bolt member, and the axial support member (34) is an axial support bolt member; the tooling adjustment body (32) and the radial boss (321) are provided with through bolt holes corresponding to the radial clamping bolt member and the axial support bolt member; the radial clamping bolt member is threaded in the bolt hole and its end abuts against the outer circumference of the upper half of the large wind turbine bearing C-type forging (2), and the axial support bolt member is threaded in the bolt hole and its upper end is supported under the boss of the upper half of the large wind turbine bearing C-type forging (2).
7. The tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 3, characterized in that: The contact surface between the tooling base (31) and the tooling adjuster (32) is a toothed surface (322).
8. A tooling fixture for cutting and machining large wind turbine bearing C-type forgings according to claim 3, characterized in that: The end faces of the radial clamping member (33) and the axial support member (34) that contact the upper half of the large wind turbine bearing C-type forging (2) are both flat.