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CN-121972747-A - Variable speed wire cutting machine tool for metal support machining

CN121972747ACN 121972747 ACN121972747 ACN 121972747ACN-121972747-A

Abstract

The invention relates to the technical field of metal cutting, and provides a variable speed wire cutting machine tool for metal support processing, which comprises a workbench and a rack arranged at the top of the workbench, wherein a displacement mechanism is arranged at one side of the rack, a limiting structure is arranged at the top of the displacement mechanism, a support is arranged at the other side of the rack, a variable speed structure is arranged at one end of the support, and a wire unwinding cylinder is arranged at the top of the support. According to the invention, the speed change structure is arranged, when the effective length of the electrode wire is subjected to transient fluctuation due to the change of the wire feeding speed, the floating wheel generates displacement under the action of the spring, and resistance is generated on one of the wire feeding cylinder or the wire collecting cylinder through the transmission of the driving rack, the transmission gear set and the conical fluted disc, so that the planetary wheel power is automatically biased to the side with smaller resistance, the instantaneous mechanical compensation of the wire feeding speed or the wire collecting speed is realized, the electrode wire is effectively prevented from loosening or overstretched, the precision of the processing surface is obviously improved, the roughness is reduced, and the wire breakage risk is greatly reduced.

Inventors

  • SUI CONG
  • LI JIAZHE

Assignees

  • 青岛唐恩精密冲压有限公司

Dates

Publication Date
20260505
Application Date
20260320

Claims (10)

  1. 1. A variable speed wire cutting machine tool for machining a metal bracket comprises a workbench (1) and a rack (4) arranged at the top of the workbench; The method is characterized in that: one side of the frame (4) is provided with a displacement mechanism (2), the top of the displacement mechanism (2) is provided with a limiting structure (5), the other side of the frame (4) is provided with a bracket (3), and one end of the bracket (3) is provided with a speed change structure (6); A wire releasing cylinder (31) is arranged at the top of the bracket (3), and a wire collecting cylinder (32) is arranged at the bottom of the bracket (3); The speed change structure (6) comprises a planet carrier (61) arranged on one side of the support (3), one end of the planet carrier (61) is provided with a connecting gear set (62), one side of the planet carrier (61) is provided with a transmission rack (65), the top of the transmission rack (65) is provided with a connecting plate (66), one side of the transmission rack (65) is provided with a conical fluted disc (64), and one side of the conical fluted disc (64) is provided with a floating wheel (63).
  2. 2. The variable speed wire cutting machine tool for machining metal brackets according to claim 1, wherein the displacement mechanism (2) comprises a transverse electric sliding rail (21) arranged at the top of the workbench (1), a longitudinal electric sliding rail (22) is arranged at the top of the transverse electric sliding rail (21), and a support (23) is arranged in the middle of the longitudinal electric sliding rail (22).
  3. 3. The variable speed wire cutting machine tool for machining metal brackets according to claim 1, wherein an upper guide wheel groove (41) is formed in one side of the top of the frame (4), a lower guide wheel groove (42) is correspondingly formed in the bottom of the upper guide wheel groove (41), and a fixed guide wheel (43) is mounted on the other side of the top of the frame (4).
  4. 4. The variable speed wire cutting machine tool for machining metal brackets according to claim 2, wherein the limiting structure (5) comprises clamping seats (51) arranged at the tops of the longitudinal electric sliding rails (22), abutting blocks (53) are arranged in the opposite inner portions of the clamping seats (51) in a sliding mode, guide plates (54) are arranged in the abutting blocks (53), and movable plates (52) are arranged in the guide plates (54).
  5. 5. The variable speed wire cutting machine tool for machining metal brackets according to claim 4, wherein the movable plates (52) are provided with connecting plates (521) at the tops thereof, pressing plates (522) are arranged at the bottoms of the connecting plates (521), guide blocks (523) are fixed at both ends of the movable plates (52), and a sliding structure is formed between the guide blocks (523) and the guide plates (54).
  6. 6. The variable speed wire cutting machine for machining metal brackets according to claim 1, wherein planetary gears (613) are mounted on two sides of one end of the planetary carrier (61), a left half shaft (614) is arranged in the middle of the planetary carrier (61), the left half shaft (614) is connected with one end of a connecting gear set (62) through a rotating shaft, and one end of the connecting gear set (62) is connected with a wire collecting cylinder (32) through the rotating shaft.
  7. 7. The variable speed wire cutting machine tool for machining a metal support according to claim 6, wherein a right half shaft (611) is arranged at one end of the left half shaft (614), the right half shaft (611) is connected with one end of the wire feeding barrel (31) through a rotating shaft, the planet wheel (613) is in meshed connection with the left half shaft (614) and the right half shaft (611), a limiting gear (612) is arranged at one end of the right half shaft (611) and one end of the left half shaft (614), and a bevel gear (615) is connected to one side of the planet carrier (61) in a meshed manner.
  8. 8. The variable speed wire cutting machine tool for machining metal brackets according to claim 1, wherein a sliding seat (634) outside the floating wheel (63) is arranged on one side of the frame (4), a sliding structure is formed between the floating wheel (63) and the sliding seat (634), springs (633) are arranged on one side of the floating wheel (63), one end of the floating wheel (63) is fixedly provided with a driving rack (631), a transmission gear set (632) is arranged at the bottom of the driving rack (631), the driving rack (631) is connected with the transmission gear set (632) in a meshed mode, and the transmission gear set (632) is connected with a bevel gear disc (64) in a meshed mode.
  9. 9. The variable speed wire cutting machine for metal support machining according to claim 1, wherein a first gear (651) is mounted on one side of the transmission rack (65), the first gear (651) is in meshed connection with the transmission rack (65), a third gear (655) is arranged on one side of the first gear (651), a second gear (654) is arranged on the other side of the first gear (651), a left gear set (653) is mounted on one end of the second gear (654), and a right gear set (652) is mounted on one end of the third gear (655).
  10. 10. The variable speed wire cutting machine tool for machining metal brackets according to claim 9, wherein a left clamping block (661) and a right clamping block (662) are respectively installed at the bottom of the connecting plate (66), sliding structures are formed between the left clamping block (661) and the right clamping block (662) and the connecting plate (66), movable teeth (663) are arranged at the bottoms of the left clamping block (661) and the right clamping block (662), the left clamping block (661) and the left gear set (653) are in meshed connection, and the right clamping block (662) and the right gear set (652) are in meshed connection.

Description

Variable speed wire cutting machine tool for metal support machining Technical Field The invention relates to the technical field of metal cutting, in particular to a variable speed wire cutting machine tool for machining a metal bracket. Background Wire cutting is an important process in the field of metal precision machining, is particularly suitable for machining metal parts with complex shapes, and is used for performing pulse discharge etching on a workpiece through a continuously moving electrode wire (such as molybdenum wire) by a wire electric discharge machine tool so as to realize metal cutting and forming; The patent with the publication number of CN223629621U discloses a gantry type linear cutting machine tool, which comprises a machine body and a portal frame, wherein a workbench is arranged on the machine body, the portal frame is provided with an upper cross beam and a lower cross beam which are arranged along the vertical direction, an inner bin is respectively arranged on the upper cross beam and the lower cross beam, an upper wire cylinder is arranged in the inner bin of the upper cross beam, a lower wire cylinder is arranged in the inner bin of the lower cross beam, the upper wire cylinder and the lower wire cylinder are used for dragging one molybdenum wire, bin openings of the two inner bins face the same direction, the workbench is provided with a clamping assembly, the linear cutting machine tool adopts gantry type layout, bin openings of the two inner bins face the same direction, the working operation is greatly facilitated, no matter whether the molybdenum wire is replaced, the wire is penetrated or the fault is removed, the upper wire cylinder and the lower wire cylinder are in an up-down relationship, a plurality of winding is omitted, the operation is easier, and the working efficiency is improved; The gantry wire cutting machine tool is convenient for operators to carry out operations such as wire threading, wire changing and the like by adopting gantry layout and respectively installing the upper wire cylinder and the lower wire cylinder in the inner bins of the upper beam and the lower beam, but the wire feeding speed is required to be adjusted in real time according to the change of a processing path and the thickness of a workpiece in the processing process, the metal bracket generally has the characteristics of thin wall, special shape and low rigidity, the requirement on dynamic stability in the cutting process is extremely high, when the wire feeding speed is frequently changed, the effective length of the electrode wire participating in working in the wire feeding path can be changed in a transient manner due to the dynamic change of the winding radius of the wire storage cylinder and the influence of the movement inertia of the electrode wire, the change directly leads to the severe fluctuation of the tension of the electrode wire, the traditional machine tool is compensated by means of simple electrical control, the high-frequency transient tension change is difficult to be accurately eliminated in real time due to the hysteresis in signal acquisition, the processing and execution, the electrode wire is easy to loose or overstretch in the speed moment, the precision and the roughness of the processing surface are influenced, and even the wire breakage is caused in serious condition. Disclosure of Invention The invention aims to provide a variable speed wire cutting machine tool for machining a metal bracket, which is used for solving the defect that the tension fluctuation is caused by the speed change of the conventional variable speed wire cutting machine tool for machining the metal bracket. The variable speed wire cutting machine tool for machining the metal support comprises a workbench and a rack arranged on the top of the workbench, wherein a displacement mechanism is arranged on one side of the rack, a limiting structure is arranged on the top of the displacement mechanism, a support is arranged on the other side of the rack, one end of the support is provided with a variable speed structure, a wire feeding cylinder is arranged on the top of the support, a wire collecting cylinder is arranged on the bottom of the support, the variable speed structure comprises a planet carrier arranged on one side of the support, one end of the planet carrier is provided with a connecting gear set, one side of the planet carrier is provided with a transmission rack, the top of the transmission rack is provided with a connecting plate, one side of the transmission rack is provided with a conical fluted disc, and one side of the conical fluted disc is provided with a floating wheel. Preferably, the displacement mechanism comprises a transverse electric sliding rail arranged at the top of the workbench, the top of the transverse electric sliding rail is provided with a longitudinal electric sliding rail, and a support is arranged in the middle of the longitudinal electric sliding