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CN-122007672-A - Ultra-thin wall pump body machining equipment

CN122007672ACN 122007672 ACN122007672 ACN 122007672ACN-122007672-A

Abstract

The invention discloses ultra-thin wall pump body machining equipment, and belongs to the technical field of laser cutting. The equipment comprises a laser cutting mechanism, a supporting component, a rotating mechanism, an internal support component and a slag discharging and separating component. The inner support assembly comprises an inner support block capable of radially opening and closing and a center shaft which movably penetrates through the inner support block, and the ends of the two groups of center shafts are spliced into a V-shaped sinking groove in a cutting area in a butt joint mode to receive slag. When the driving unit drives the inner support assembly to retreat outwards, the limiting structure of the slag discharging separation assembly forces the central shaft to stagnate, the generated relative displacement difference drives the inner support block to radially shrink and discharge, and slag leakage and pipe orifice cleaning are synchronously executed through the relative stretching action of the central shaft. The invention realizes active uniform support and automatic slag discharging and discharging of the ultrathin-wall pipe through mechanical linkage, and solves the problems of easy deformation and slag retention in the thin-wall pipe processing.

Inventors

  • MAO JUNDONG

Assignees

  • 宁波创芝精密部件有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. Ultra-thin wall pump body machining equipment is applied to ultra-thin wall pressure-bearing barrel laser cutting of pump body, characterized by including A laser cutting mechanism (1); The support assembly (2) is arranged at the bottom of the laser cutting mechanism (1) and is provided with a support lathe bed (21) and two groups of driving units symmetrically arranged on the support lathe bed, and the driving units are used for providing linear driving force for supporting and retreating to two sides; The rotating mechanisms (3) are symmetrically arranged and respectively fixed at two ends of the supporting lathe bed (21) and used for centering, clamping and driving the pressure-bearing barrel to rotate; The two inner support assemblies (4) are symmetrically arranged and respectively arranged between the corresponding rotating mechanism (3) and the pressure-bearing cylinder body, each inner support assembly comprises an inner support block (44) capable of being opened and closed radially and a central shaft (48) capable of penetrating actively, and the end parts of the central shafts (48) of the two inner support assemblies (4) are in butt joint in a cutting area to form a V-shaped sinking groove for receiving slag; The slag discharging and separating assemblies (5) are symmetrically arranged and respectively penetrate through the corresponding rotating mechanisms (3) to be connected with the central shaft (48), and are provided with limiting structures for limiting the axial retraction of the central shaft (48); When the driving units on two sides drive the corresponding inner support assemblies (4) to retreat outwards, the limiting structure forces the central shaft (48) to stagnate, the inner support blocks (44) are driven to radially shrink and discharge by utilizing the generated relative displacement difference, and slag leakage and pipe orifice cleaning actions are synchronously executed through the relative extension of the central shaft (48).
  2. 2. The ultra-thin wall pump body machining device according to claim 1, wherein each inner support assembly (4) further comprises a main fixing table (41), a plurality of sliding guide rails (43) and a plurality of guide blocks (45), one end of the central shaft (48) movably penetrates through the main fixing table (41) and is matched with a key groove of the main fixing table, the sliding guide rails (43) are circumferentially arranged along the end face of the main fixing table (41), one end of each inner support block (44) is correspondingly and slidingly arranged on the sliding guide rails (43), the guide blocks (45) are linearly arranged along the central shaft (48) and define a plurality of guide blocks (45) which are linearly arranged as a group, three groups are circumferentially arranged along the central shaft (48) to respectively correspond to the inner support blocks (44), and two sides of each guide block (45) are provided with opening and closing sliding grooves (451) for enabling the sliding blocks (451) to be relatively displaced along the sliding tracks (44) by the sliding guide blocks (45) generated by the main fixing table (41) and the central shaft (48).
  3. 3. An ultra-thin wall pump body machining apparatus according to claim 2, wherein the opening and closing chute (451) is composed of a horizontal chute and a downward inclined chute, the inner support assembly (4) further comprises a plurality of concave sliding rail blocks (441) distributed along a straight line of the inner bottom surface of the inner support block (44), the concave sliding rail blocks (441) are disposed corresponding to the sliding guide blocks (45), and the inner wall surface of the vertical end of the concave sliding rail blocks (441) is provided with sliding balls which are slidingly disposed in the opening and closing chute (451) and are used for guiding the inner support block (44) to shrink inwards to be separated from the inner wall of the pressure-bearing cylinder body by the action of smoothly transiting the sliding balls from the horizontal chute into the inclined chute in the material returning and separating process.
  4. 4. The ultra-thin wall pump body machining device according to claim 2, wherein one end of the central shaft (48) movably extends into the tapered end (46) through the horizontal shaft, the tapered end (46) is made of red copper, the tapered ends (46) of the two inner support assemblies (4) are initially butted to form a V-shaped sinking groove aligned with a laser cutting area, the inner support assemblies (4) further comprise annular brushes (47) fixedly sleeved on the horizontal shaft, the annular brushes (47) are positioned between the front side of one end of the inner support block (44) and the rear side of the tapered end (46), and in an initial state, an avoidance gap exists between the annular brushes (47) and the tapered end (46) for separating the butted tapered end (46) to drop slag which is lost to wrap and clean the inner wall of the end of the cylinder body with the annular brushes (47) along with the action.
  5. 5. The ultra-thin-wall pump body machining equipment according to claim 2, wherein each slag discharging and separating assembly (5) comprises a movable sleeve rod (51) and a fixed sleeve (52), the limiting structure is an inverted L-shaped rod (54), the inside of the rotating mechanism (3) is provided with a through hole which is communicated with one horizontal line, one end of the movable sleeve rod (51) is connected with one end of the central shaft (48), the other end of the movable sleeve rod horizontally passes through the through hole, the fixed sleeve (52) is horizontally fixed in the through hole, the movable sleeve rod (51) movably passes through the fixed sleeve (52) and is matched with a key groove, and the horizontal end of the inverted L-shaped rod (54) is fixed on the outer side face of the rotating mechanism (3) and is used for touching and blocking the end part of the movable sleeve rod (51) by the vertical end of the movable sleeve rod in the whole retraction stroke so as to realize stagnation limiting of the central shaft (48).
  6. 6. The ultra-thin wall pump body machining equipment according to claim 5, wherein the slag discharging and separating assembly (5) further comprises a reset spring (53) sleeved on the movable sleeve rod (51), one end of the reset spring (53) is connected with one end of the inner wall of the fixed sleeve rod (52), the other end of the reset spring is connected with the side face of the convex edge integrally arranged on the movable sleeve rod (51), electromagnets are embedded into the end face of the rotating mechanism (3) and the corresponding close end face of the main fixed table (41), a control switch (42) for controlling the electromagnets to be powered on is arranged on the main fixed table (41), and the reset spring (53) is used for releasing elastic force to drive the movable sleeve rod (51) and the central shaft (48) to reset and move so as to guide the inner supporting block (44) to perform in-situ radial expansion relative to the pressure-bearing cylinder body by utilizing the track of the opening and closing sliding groove (451).
  7. 7. The ultra-thin-wall pump body machining equipment according to claim 1, wherein two groups of driving units of the supporting assembly (2) are longitudinally and symmetrically arranged along the supporting lathe bed (21), each group of driving units comprises a ball screw (24), a driving motor (25), a sliding block (26), a supporting bottom plate (27) and two guide rods (211), the supporting bottom plate (27) is horizontally fixed at a position close to the center inside the supporting lathe bed (21), the ball screw (24) is horizontally arranged, two ends of the ball screw (24) are respectively rotatably arranged between the inner wall of the end part of the supporting lathe bed (21) and the supporting bottom plate (27) through bearing seats, the driving motor (25) is embedded and fixed at the end part of the supporting lathe bed (21), the output end of the driving motor is coaxially connected with the ball screw (24), the two guide rods (211) are symmetrically distributed at two sides of the ball screw (24) in parallel, two ends of the driving motor are respectively fixed between the inner wall of the supporting lathe bed (21) and the supporting bottom plate (27), the sliding block (26) is sleeved on the center of the supporting lathe bed (21) at a position close to the center, the sliding block (26) is correspondingly arranged on the two sides of the guide rods (211) in a sliding mode, when the driving motor (26) is correspondingly arranged on the sliding guide rods (211) and is in a straight line (212) in a sliding mode, when the driving rod (212) is correspondingly arranged, the end part extending upwards through the trigger bending rod (212) is abutted against and pushes the main fixing table (41) of the inner support assembly (4) so as to execute material returning displacement which is pulled towards two sides synchronously.
  8. 8. The ultra-thin-wall pump body machining device according to claim 7, wherein each group of the driving units is correspondingly provided with at least two bearing units arranged at intervals, the two bearing units are arranged on the side surface corresponding to the sliding block (26) side by side, each bearing unit comprises a bearing underframe (28), a supporting upright post, a V-shaped supporting piece (29) and a plurality of supporting rolling balls (210), the bearing underframe (28) on one side is fixed on the trigger bending rod (212) through a connecting rod, the bearing underframes (28) of the two bearing units arranged side by side are connected with each other through a transverse connecting rod, the V-shaped supporting piece (29) is vertically supported on the bearing underframe (28) through the supporting upright post, the plurality of supporting rolling balls (210) are embedded in the V-shaped upper end surface of the V-shaped supporting piece (29) at equal intervals and are used for placing a bearing cylinder, the friction resistance when the bearing cylinder rotates is reduced through rolling contact, and the synchronous bending of the thin-wall supporting tube is prevented from being lost due to the fact that the supporting cylinder is separated by linear translation of the sliding block (26).
  9. 9. The ultra-thin wall pump body machining apparatus according to claim 7, wherein each of the rotating mechanisms (3) comprises a T-shaped frame (31), a chuck base (32), a three-jaw chuck (33), a driven pulley (34), a motor mounting seat (35), a rotating motor (36) and a belt body (37), the T-shaped frame (31) is fixed at the end position of the supporting lathe bed (21), the chuck base (32) is fixed at the side surface of the T-shaped frame (31), the three-jaw chuck (33) is rotatably arranged at the side surface of the chuck base (32) in a bearing manner, the driven pulley (34) is fixedly sleeved on the protruding end of the three-jaw chuck (33) protruding out of the position of a through hole of the chuck base (32), the rotating motor (36) is fixed on the chuck base (32) through a motor mounting seat (35), the output end of the rotating motor (36) is provided with a driving pulley, the driving pulley is connected with the driven pulley (34) through the belt body (37) so as to drive the three-jaw chuck (32) to rotate, and a group of sliding blocks (26) is fixedly connected with a welding slag falling groove (38) for collecting slag.
  10. 10. The ultra-thin wall pump body machining equipment according to claim 1, wherein linear guide rails (22) are fixed at two sides of the upper end face of the support lathe bed (21), one side of one group of the linear guide rails (22) is provided with a transmission rack (23), the laser cutting mechanism (1) comprises a machine cabinet shell (11), a linear moving module (12) and a laser cutting head (13), the machine cabinet shell (11) is slidably arranged on the two linear guide rails (22), a driving gear meshed with the transmission rack (23) is fixed on a bottom frame through a driving piece, the linear moving module (12) is horizontally fixed inside the machine cabinet shell (11) and a vertical cylinder is arranged at a sliding end of the linear guide rails, and the laser cutting head (13) is arranged at a telescopic end of the cylinder and is used for adjusting the horizontal addressing position and the vertical focusing height of the laser cutting head (13).

Description

Ultra-thin wall pump body machining equipment Technical Field The invention relates to the technical field of laser cutting, in particular to ultra-thin wall pump body machining equipment. Background In the large-scale manufacturing process of the vertical multistage pump, the wall thickness of the stainless steel cylinder body serving as the core pressure-bearing member is designed to be extremely thin in order to pursue extremely light weight and reduce manufacturing cost, and the ultra-thin wall design causes extremely poor radial compression rigidity of the cylinder body itself. At present, the existing pipe machining equipment generally depends on the traditional clamping and supporting process when performing high-energy laser fixed-length cutting on the ultra-thin wall pump body. The most common way is to directly use an external chuck of a machine tool to apply radial clamping force to the pipe body for fixing, or to insert a solid rigid mandrel into the pipe body for passive support in order to prevent the outer layer from collapsing, and then drive the pipe body to synchronously rotate to complete the whole-circle laser cutting action, and simultaneously, a laser head nozzle continuously sprays high-pressure auxiliary gas downwards along with a light beam to blow off metal melt in the cutting process. However, the processing mode relying on the traditional solid fixed mandrel has defects in practical application, because the solid mandrel has fixed outer diameter and has assembly gaps with the inner wall of the tube, the solid mandrel can only provide passive rigid limit, active and uniform radial support is difficult to be applied to the extremely thin tube wall, so that the tube body is extremely easy to shrink and deform when being clamped and cut and stressed externally, and the cutting roundness is difficult to be ensured. It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may include information that does not form the prior art. Disclosure of Invention The invention provides ultra-thin wall pump body machining equipment, which aims to solve the technical problems that when the existing solid fixed mandrel is used for laser cutting of an ultra-thin pipe body, the pipe body is easy to shrink and deform due to lack of active radial support, and slag retention and slag return interference are easy to cause due to lack of a clearance slag discharging structure, so that continuous automatic operation is influenced. The invention adopts the following technical scheme that the ultra-thin wall pump body machining equipment is provided. Comprises a laser cutting mechanism; the support assembly is arranged at the bottom of the laser cutting mechanism and is provided with a support lathe bed and two groups of driving units symmetrically arranged on the support lathe bed, and the driving units are used for providing linear driving force for supporting and retreating to two sides; the rotating mechanisms are symmetrically provided with two rotating mechanisms, are respectively fixed at two ends of the supporting lathe bed and are used for centering, clamping and driving the pressure-bearing barrel to rotate; The two inner support assemblies are symmetrically arranged and respectively arranged between the corresponding rotating mechanism and the pressure-bearing cylinder body, and each inner support assembly comprises an inner support block capable of being opened and closed radially and a central shaft capable of penetrating movably, the end parts of the central shafts of the two inner support assemblies are in butt joint in a cutting area, and a V-shaped sinking groove for receiving slag is spliced; The slag discharging and separating assemblies are symmetrically provided with two slag discharging and separating assemblies which respectively penetrate through corresponding rotating mechanisms to be connected with the central shaft, and are provided with limiting structures for limiting the axial retraction of the central shaft; When the driving units on two sides drive the corresponding inner support assemblies to retreat outwards, the limiting structure forces the central shaft to stagnate, the inner support blocks are driven to radially shrink and discharge by utilizing the generated relative displacement difference, and slag leakage and pipe orifice cleaning actions are synchronously executed through the relative extension of the central shaft. Further, every interior support subassembly still includes main fixed station, a plurality of sliding guide and a plurality of guide blocks, the one end activity of center pin runs through main fixed station and cooperates with its keyway, sliding guide follows main fixed station terminal surface circumference is provided with a plurality of, interior support block's one end corresponds the slip setting and is in on the sliding guide, guide block