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CN-122001168-A - Generator assembly processing fixture

CN122001168ACN 122001168 ACN122001168 ACN 122001168ACN-122001168-A

Abstract

The invention relates to the field of machining and positioning of generator components, in particular to a machining tool clamp for a generator component. The device comprises a machine table, wherein an electric turntable is rotatably arranged at the upper end of the table top of the machine table, a tray is coaxially and fixedly connected to the upper end of the electric turntable, flexible bags filled with magnetorheological fluid are arranged at the upper end of the tray, hanging ear positioning mechanisms are arranged at the upper end of the tray along a circumferential direction in an equal-angle array mode, each hanging ear positioning mechanism comprises a supporting plate, a top pin fixed in the middle of the supporting plate and a positioning pin coaxially and slidably arranged with the top pin, and conical rubber sleeves for auxiliary positioning and clamping are respectively sleeved outside the positioning pin and the top pin. The invention realizes the nondestructive high-precision positioning of the non-magnetic aluminum alloy end cover by combining the bidirectional lug positioning and the magnetorheological fluid full-wrapping support, has no processing interference and strong adaptability, is suitable for the inner cavity batch processing procedure of the generator end cover, and solves the problems of misaligned reference, easy deformation of workpieces, processing interference and poor positioning stability of the existing generator end cover back-off processing tool.

Inventors

  • SHI HEPING
  • LIANG XIANHUAN
  • WU HONG
  • ZHANG YAN
  • SHI HUAPING
  • WANG TINGTING

Assignees

  • 华和重工有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (10)

  1. 1. The utility model provides a generator module adds clamping apparatus, includes and carries out board (1) of processing to the work piece, its characterized in that still includes: An electric turntable (2) is rotatably arranged at the upper end of a table top of the machine table (1), a tray (3) is fixedly connected with the upper end of the electric turntable (2) in a coaxial line, a flexible bag (5) filled with magnetorheological fluid is arranged at the upper end of the tray (3), and when a workpiece is placed at the upper end of the flexible bag (5), the flexible bag (5) fills a flange rib gap of the workpiece through the magnetorheological fluid; The upper end of the tray (3) is provided with hanging lug positioning mechanisms (10) along a circumferential equal-angle array, each hanging lug positioning mechanism (10) comprises a supporting plate (23) fixedly arranged above the tray (3) and a jacking pin (25) fixedly arranged in the middle of the supporting plate (23), a positioning pin (16) is arranged above the jacking pin (25) in a sliding manner, when a workpiece is placed at the upper end of the flexible bag (5), hanging lug holes of the workpiece are correspondingly sleeved outside each jacking pin (25), and the positioning pins (16) move from top to bottom and extend into corresponding hanging lug holes to be matched with the jacking pins (25) to perform bidirectional positioning on the workpiece; The outer parts of the locating pin (16) and the jacking pin (25) are respectively sleeved with a conical rubber sleeve (17), and when the locating pin (16) and the jacking pin (25) locate a workpiece, the conical rubber sleeves (17) are in interference connection with the inner wall of the hanging lugs.
  2. 2. The tooling fixture for machining the generator assembly according to claim 1, wherein a rubber ring (4) for supporting the lower end of the workpiece is coaxially and fixedly connected to the middle part of the tray (3).
  3. 3. The tooling fixture for machining the generator assembly according to claim 1, wherein the flexible bag (5) is made of a high-tearing-resistance polyurethane composite film, and the outline of the flexible bag (5) is matched with the projection outline of the flange rib of the workpiece so as to completely fill the gap of the flange rib.
  4. 4. A generator assembly machining fixture according to claim 3, wherein the upper end of the tray (3) is provided with an electromagnetic generating module (7) generating magnetic force, the lower end of the flexible bag (5) is provided with a magnetic disk (6), and the magnetic disk (6) is magnetically connected with the magnetic field output end of the electromagnetic generating module (7).
  5. 5. The tooling fixture for machining the generator assembly according to claim 1, wherein two anchor rods (8) are arranged at the upper end of the tray (3), the anchor rods (8) correspond to support leg shaft holes at the end parts of the workpiece, and bullet heads (9) for allowing the shaft holes of the workpiece to pass through are formed at the upper ends of the anchor rods (8).
  6. 6. The power generator assembly machining fixture according to claim 1, wherein each hanging lug positioning mechanism (10) further comprises a bottom frame (11) fixedly connected with the upper end of the tray (3), two guide rails (13) are fixedly connected to the upper end of the bottom frame (11), two electric push rods (12) are arranged on the side, close to the two guide rails (13), of each guide rail, and a supporting plate (23) is fixedly connected with the bottom frame (11); the upper end of the underframe (11) is provided with a support plate (14), the support plate (14) is in sliding connection with two guide rails (13), the output ends of the two electric push rods (12) are fixedly connected with the support plate (14), and the positioning pin (16) is arranged on one side, far away from the electric push rods (12), of the support plate (14) in a sliding manner.
  7. 7. The tooling fixture for machining the generator assembly according to claim 6, wherein each hanging lug positioning mechanism (10) further comprises an air pushing rod (15) arranged at the upper end of the positioning pin (16), the fixed end of the air pushing rod (15) is fixedly connected with the support plate (14), and the output end of the air pushing rod is fixedly connected with the positioning pin (16).
  8. 8. The tooling fixture for machining the generator assembly according to claim 7, wherein the output end of the air pushing rod (15) is fixedly connected with a chuck (18), the chuck (18) is connected with a clamping pin (19) in a sliding manner along the circumferential direction, one side of the chuck (18) close to the positioning pin (16) is provided with a compression ring (21), and the compression ring (21) is fixedly connected with the lower end of the clamping pin (19); The outside of every bayonet lock (19) is overlapped respectively and is equipped with spring (20), and the one end and the clamping ring (21) of spring (20) link firmly, and the other end links firmly with chuck (18), and the one end that bayonet lock (19) kept away from clamping ring (21) has linked firmly nut (22) that prevent bayonet lock (19) excessive downward displacement, when locating pin (16) stretch into in the hangers hole, clamping ring (21) offsets with hangers upper end until spring (20) compress to the limit.
  9. 9. The tooling fixture for machining the generator assembly according to claim 1, wherein one end of the supporting plate (23) close to the center of the tray (3) is arc-shaped.
  10. 10. The tooling fixture for machining the generator assembly according to claim 9, wherein the upper end of the supporting plate (23) is fixedly connected with an anti-slip pad (24).

Description

Generator assembly processing fixture Technical Field The invention relates to the field of machining and positioning of generator components, in particular to a machining tool clamp for a generator component. Background Along with the rapid iteration of the new energy automobile and the high-end equipment generator in the directions of light weight, high power density and low noise, the non-magnetic aluminum alloy has become a main application material of the generator end cover by virtue of the core advantages of no eddy current loss and good formability. The end cover of the generator is a buckling bowl-shaped thin-wall rotary body structure, and the machining precision of the inner cavity bearing chamber, the oil seal groove and the mounting hole position directly determines the transmission coaxiality, the running stability and the service life of the generator. The inner cavity processing is used as a core process of end cover production, the end cover flange plane end is required to be upwards, the arch surface end is required to be downwards reversely buckled and clamped, a non-shielding vertical feeding path is provided for a cutter, and the clamping state provides extremely high requirements for the positioning precision, the clamping rigidity, the deformation preventing capability and the non-interference design of the tool clamp. At present, a tool for processing the inverted buckle of the end cover in the industry takes a rigid contact type structure as an absolute mainstream, and has multiple inherent defects which cannot be avoided. When the existing tooling fixture faces the end cover back-off, the tooling is mainly used for taking the end cover arch face casting blank face as a rigid positioning support, and is completely deviated from the design standard of the end cover flange plane and the spigot, so that an irremovable standard misalignment error is generated, the coaxiality, perpendicularity and other core form and position tolerances of the inner cavity and the spigot cannot be guaranteed, and the batch processing consistency is extremely poor. Secondly, the existing clamping fixture is easy to cause irreversible damage to the workpiece, the non-magnetic aluminum alloy thin-wall piece is weak in rigidity, the workpiece is extremely easy to generate elliptical deformation in a conventional three-jaw chuck radial clamping mode, and after machining is finished, the clamping force is released to generate rebound, so that the dimension and form and position tolerance are out of tolerance. In addition, because the inside of work piece is processed, so the axial clamp plate that current partial anchor clamps adopted compresses tightly the scheme and can directly shelter from the cutter feed path, can't accomplish the processing of inner chamber full procedure, and rigid frock is mostly special custom structure, and single frock only can adapt single model end cover, and the product is remodelled and is needed whole set of frock, and the retooling is with high costs, the cycle is long. In order to alleviate the deformation and adaptability problems of the rigid contact tool, non-rigid contact tools adopting elastic components such as springs, elastic rubber and the like gradually appear in the industry, but the core problem of back-off processing is not solved yet. And although the elastic components can adapt to the dimensional deviation of the arch face blank, stable rigid support cannot be provided, and the cutting force in the machining process easily causes the phenomenon that a workpiece moves, swings and flutters, so that the surface roughness of an inner cavity exceeds the standard and the dimensional accuracy is out of control. Meanwhile, the non-rigid contact tool still does not solve the core problem that the positioning reference is not coincident with the design reference, the stability of form and position tolerance cannot be guaranteed from the root, fatigue failure is easy to occur to elastic components, the positioning precision is continuously attenuated after long-term use, and the processing requirements of high precision, high stability and batch production of the non-magnetic aluminum alloy generator end cover cannot be met. Disclosure of Invention Based on the above, it is necessary to provide a tooling fixture for machining a generator component in order to solve the problems in the prior art. In order to solve the problems in the prior art, the invention adopts the following technical scheme: The utility model provides a generator component adds clamping apparatus, includes the board that processes the work piece, still includes: The upper end of the electric turntable is coaxially and fixedly connected with a tray, the upper end of the tray is provided with a flexible bag filled with magnetorheological fluid, and when a workpiece is placed at the upper end of the flexible bag, the flexible bag fills gaps of flange ribs of the workpiece through the magnetorheological