Internal thread processing machinery after hollow steel pipe of stair structure is pour and is moulded
Technical Field
The invention relates to the field of steel processing equipment, in particular to an internal thread processing machine after pouring and forming of a hollow steel pipe with a stepped structure.
Background
Thread machining is a process of machining a workpiece by cutting, turning, milling, grinding and other processes using a tool for making a thread, generally refers to a method of machining a thread on a workpiece using a forming tool or a grinding tool, and mainly includes turning, milling, tapping, threading, grinding, whirling and the like. When turning, milling and grinding threads, the transmission chain of the machine tool ensures that the turning tool, the milling cutter or the grinding wheel accurately and uniformly moves by a lead along the axial direction of the workpiece every time the workpiece rotates by one turn. In tapping or threading, the tool (tap or die) and the workpiece rotate relative to each other, and the tool (or workpiece) is guided by the thread grooves formed in advance to move axially.
The internal thread processing machinery after the existing hollow steel pipe with a stepped structure is cast has the following problems: 1. the existing thread processing machine can only process a steel pipe with a single size, and a plurality of sets of machines and a plurality of steps are needed for processing the hollow steel pipe with the stepped structure, so that the processing time is increased, and the processing cost is increased; 2. current thread processing machinery adopts single fixed mode more, leads to the not tight or too tight condition that leads to the steel pipe deformation of centre gripping to appear in centre gripping by the processing steel pipe, improves the steel pipe spoilage.
Disclosure of Invention
Technical problem to be solved
The invention can solve the problems that the existing thread processing machine can only process a steel pipe with a single size, a plurality of sets of machines and a plurality of steps are needed for processing the hollow steel pipe with the stepped structure, the processing time is increased, the processing cost is improved and the like, and can solve the problems that the processed steel pipe is not clamped tightly or is clamped too tightly to cause the deformation of the steel pipe due to the adoption of a single fixing mode in the existing thread processing machine, and the damage rate of the steel pipe is improved.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme that the internal thread processing machine for the hollow steel pipe with the stepped structure after pouring and forming comprises a supporting device, a clamping device and a cutting device, wherein the clamping device is arranged on the upper end surface in the supporting device, and the cutting device is arranged on the upper side of the supporting device.
The supporting device comprises a bottom plate, a supporting frame, a longitudinal limiting rod, a longitudinal electric slider, a transverse plate, a transverse limiting rod and a transverse electric slider, wherein the supporting plate is symmetrically arranged on the upper end surface of the bottom plate, the supporting frame is arranged on the upper end surface of the supporting plate, square grooves are symmetrically arranged on the left inner side surface and the right inner side surface of the supporting frame, the longitudinal limiting rod is arranged in each square groove, the longitudinal electric slider is arranged on the longitudinal limiting rod, the transverse plate is arranged between the longitudinal electric sliders, a through groove is arranged on the lower end surface of the transverse plate, the transverse limiting rod is arranged in each through groove; the longitudinal electric sliding block and the transverse electric sliding block respectively move along the longitudinal limiting rod and the transverse limiting rod, and are matched with each other to realize slotting and feeding of threads.
The clamping device comprises an electric turntable, a bearing plate, an end clamping mechanism, a vertical plate and an outer end clamping mechanism, wherein the electric turntable is arranged on the upper end surface of the bottom plate; the electric turntable rotates to drive the end clamping mechanism and the outer end clamping mechanism to clamp and fix the trapezoidal steel pipe to rotate.
The cutting device comprises an electric telescopic rod, a fixed block, a cutting screw rod, an upper clamping block, a lower clamping block and a cutting tool, wherein the electric telescopic rod is installed on the lower end face of the transverse electric sliding block; the fixed block is driven by the electric telescopic rod to extend into the trapezoidal steel pipe, the cutting screw is screwed to drive the upper clamping block, so that the cutting tool is fixed on the fixed block, and the cutting tool can realize the function of replacing different models.
As a preferred technical scheme of the invention: the end clamping mechanism comprises a circular plate, a clamping groove, a locking groove, a triangular frame, a connecting rod, a clamping vertical plate branched chain, a clamping block, an adjusting screw rod and a turntable, the adjustable lifting device is characterized in that a circular plate is mounted on the upper end face of the supporting plate, a clamping groove is formed in the middle of the circular plate, a locking groove is formed below the clamping groove, a triangular frame is arranged in the middle of the locking groove, connecting rods are mounted on two corners of the triangular frame in a sliding fit mode and are connected with the circular plate in a sliding fit mode, nuts are mounted on two ends of each connecting rod, an adjusting screw rod is mounted on the other corner of the triangular frame in a sliding fit mode and is connected with the circular plate in a screw rod fit mode, a rotary table is mounted on the outer end face of the adjusting screw rod, a clamping vertical plate branched chain is mounted on the adjusting screw rod in a screw rod fit mode, a clamping block is mounted on the inner end face of the clamping vertical plate; the turntable is manually rotated, the triangular frame is driven to move leftwards through the adjusting screw rod, the triangular frame pulls the clamping blocks through the connecting rods, meanwhile, the vertical plate branched chains on the adjusting screw rod move inwards, the three clamping blocks move inwards at the same time, and the end heads of the trapezoidal steel pipes are clamped tightly.
As a preferred technical scheme of the invention: the outer end clamping mechanism comprises an electric pressure rod, an outer clamp supporting plate, an outer clamp limiting plate, an outer clamping plate and a compression spring, wherein the electric pressure rod is installed on the inner end face of the vertical plate, the outer clamp supporting plate is installed on the movable end of the electric pressure rod, the outer clamp limiting plate is symmetrically installed on the upper side and the lower side of the outer clamp supporting plate in a sliding fit mode, the outer clamping plate is installed on the outer end face of the outer clamp limiting plate, and the compression spring is evenly installed between the outer clamping plate and the outer clamp supporting plate; the outer clamping plate is driven by the electric pressing rod to tightly press the outer end face of the trapezoidal steel pipe.
As a preferred technical scheme of the invention: the clamping vertical plate branched chain comprises a clamping vertical plate and a vertical plate limiting rod, the clamping vertical plate is arranged on the adjusting screw rod and the connecting rod, the vertical plate limiting rods are symmetrically arranged on the clamping vertical plate in a sliding fit mode, and the vertical plate limiting rods are connected with the circular plate in a fixed mode; the clamping vertical plate reciprocates along the vertical plate limiting rod.
As a preferred technical scheme of the invention: rubber layers are arranged on the upper clamping block, the lower clamping block and the outer clamping plate.
As a preferred technical scheme of the invention: arc-shaped grooves are formed in the upper clamping block, the lower clamping block and the clamping blocks.
(III) advantageous effects
1. According to the internal thread processing machine for the hollow steel pipe with the stepped structure, which is provided by the invention, the transverse electric slide block, the longitudinal electric slide block and the electric telescopic rod are matched with each other, the cutting tool is firstly positioned on the inner side surface of the trapezoidal steel pipe, and then the transverse electric slide block and the longitudinal electric slide block are utilized to realize slotting and feeding, so that the purpose of processing the steel pipe with the stepped structure is realized, multiple sets of mechanical and multi-step processing treatment is not needed, the processing time is shortened, and the processing cost is reduced.
2. According to the internal thread processing machine for the hollow steel pipe with the stepped structure, which is provided by the invention, the end of the trapezoidal steel pipe is clamped and fixed through the end clamping mechanism, and the outer side of the trapezoidal steel pipe is clamped and fixed through the outer end clamping mechanism, so that a double-clamping fixing mode is realized, the condition that the processed steel pipe is deformed due to the fact that the processed steel pipe is not clamped tightly or is clamped tightly too tightly is prevented, and the damage rate of the steel pipe is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of a portion II of FIG. 1 in accordance with the present invention;
FIG. 4 is an enlarged partial view of portion III of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of the construction of the upper clamping block of the present invention;
FIG. 6 is a schematic view of the construction of the head clamping mechanism of the present invention;
FIG. 7 is a schematic perspective view of a machined part (trapezoidal steel pipe) according to the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The internal thread processing machine for the hollow steel pipe with the stepped structure after pouring and forming comprises a supporting device 1, a clamping device 2 and a cutting device 3, wherein the clamping device 2 is installed on the inner upper end face of the supporting device 1, and the cutting device 3 is installed on the upper side of the supporting device 1.
The supporting device 1 comprises a bottom plate 11, a supporting plate 12, a supporting frame 13, a longitudinal limiting rod 14, a longitudinal electric slider 15, a transverse plate 16, a transverse limiting rod 17 and a transverse electric slider 18, wherein the supporting plate 12 is symmetrically arranged on the upper end surface of the bottom plate 11, the supporting frame 13 is arranged on the upper end surface of the supporting plate 12, square grooves are symmetrically arranged on the left inner side surface and the right inner side surface of the supporting frame 13, the longitudinal limiting rod 14 is arranged in each square groove, the longitudinal electric slider 15 is arranged on the longitudinal limiting rod 14, the transverse plate 16 is arranged between the longitudinal electric sliders 15, a through groove is arranged on the lower end surface of the transverse plate 16, the transverse limiting rod 17 is arranged in each through groove, and; the longitudinal electric sliding block 15 and the transverse electric sliding block 18 respectively move along the longitudinal limiting rod 14 and the transverse limiting rod 17, and are matched with each other to realize slotting and feeding of threads.
The clamping device 2 comprises an electric turntable 21, a bearing plate 22, an end clamping mechanism 23, a vertical plate 24 and an outer end clamping mechanism 25, wherein the electric turntable 21 is installed on the upper end surface of the bottom plate 11, the bearing plate 22 is installed on the upper end surface of the electric turntable 21, the end clamping mechanism 23 is installed in the middle of the upper end surface of the bearing plate 22, the vertical plates 24 are symmetrically installed on the left side and the right side of the upper end surface of the bearing plate 22, and the outer end clamping mechanism 25 is installed on the inner side surface of the vertical plate 24; the electric turntable 21 rotates to drive the end clamping mechanism 23 and the outer end clamping mechanism 25 to clamp and fix the trapezoidal steel pipe to rotate.
The cutting device 3 comprises an electric telescopic rod 31, a fixed block 32, a cutting screw rod 33, an upper clamping block 34, a lower clamping block 35 and a cutting tool 36, the electric telescopic rod 31 is installed on the lower end face of the transverse electric sliding block 18, the fixed block 32 is installed on the movable end of the electric telescopic rod 31, a square hole is formed in the right side face of the fixed block 32, the cutting screw rod 33 is installed on the upper end face of the right side of the fixed block 32 in a screw rod matching mode, the upper clamping block 34 is installed at the lower end of the cutting screw rod 33, the lower clamping block 35 is installed on the lower inner end face of the right side of the fixed block 32, the cutting tool 36 is installed between the upper clamping block 34 and the lower clamping block 35, rubber layers are arranged on the upper clamping block 34 and the lower clamping block 35; the fixing block 32 is driven by the electric telescopic rod 31 to extend into the trapezoidal steel pipe, the cutting screw 33 is screwed to drive the upper clamping block 34, so that the cutting tool 36 is fixed on the fixing block 32, and the cutting tool 36 can realize the function of replacing different models.
The end head clamping mechanism 23 comprises a circular plate 231, a clamping groove 232, a locking groove 233, a triangular frame 234, a connecting rod 235, a clamping vertical plate branched chain 236, a clamping block 237, an adjusting screw rod 238 and a rotary table 239, the circular plate 231 is installed on the upper end surface of the supporting plate 22, the clamping groove 232 is arranged in the middle of the circular plate 231, the locking groove 233 is arranged below the clamping groove 232, the triangular frame 234 is arranged in the middle of the locking groove 233, the connecting rod 235 is installed on two corners of the triangular frame 234 in a sliding fit manner, the connecting rod 235 is connected with the circular plate 231 in a sliding fit manner, nuts are installed on two end heads of the connecting rod 235, the adjusting screw rod 238 is installed on the other corner of the triangular frame 234 in a sliding fit manner, the adjusting screw rod 238 is connected with the circular plate 231 in a screw rod fit manner, the rotary table 239 is installed on the outer end surface of the adjusting screw rod 238, the, a clamping vertical plate branched chain 236 is fixedly arranged on the connecting rod 235, a clamping block 237 is arranged on the inner end surface of the clamping vertical plate branched chain 236, and an arc-shaped groove is formed in the clamping block 237; the rotating disc 239 is manually rotated, the triangular frame 234 is driven to move leftwards through the adjusting screw rod 238, the clamping blocks 237 are pulled by the triangular frame 234 through the connecting rods 235, meanwhile, the vertical plate branched chains 236 on the adjusting screw rod 238 move inwards, the three clamping blocks 237 move inwards at the same time, and the end of the trapezoidal steel pipe is clamped.
The outer end clamping mechanism 25 comprises an electric pressure rod 251, an outer clamp supporting plate 252, an outer clamp limiting plate 253, an outer clamping plate 254 and a compression spring 255, the electric pressure rod 251 is installed on the inner end face of the vertical plate 24, the outer clamp supporting plate 252 is installed on the movable end of the electric pressure rod 251, the outer clamp limiting plates 253 are symmetrically installed on the upper side and the lower side of the outer clamp supporting plate 252 in a sliding fit mode, the outer clamping plate 254 is installed on the outer end face of the outer clamp limiting plate 253, a rubber layer is arranged on the outer clamping plate 254, and the compression spring 255 is evenly installed between the outer clamping plate 254 and the outer clamp supporting; the outer clamping plate 254 is driven by the electric pressure rod 251 to tightly press the outer end face of the trapezoid steel pipe.
The clamping vertical plate branched chain 236 comprises a clamping vertical plate 2361 and a vertical plate limiting rod 2362, the adjusting screw 238 and the connecting rod 235 are provided with the clamping vertical plate 2361, the clamping vertical plate 2361 is symmetrically provided with the vertical plate limiting rods 2362 in a sliding fit manner, and the vertical plate limiting rods 2362 are connected with the circular plate 231 in a fixed manner; the gripping riser 2361 reciprocates along the riser restraint bar 2362.
In addition, the invention also provides a specific use method of an internal thread processing machine after pouring and forming the hollow steel pipe with the stepped structure, which comprises the following steps:
s1: manually placing the trapezoidal steel pipe with a wide upper part and a narrow lower part on the end clamping mechanism 23, manually rotating the turntable 239, driving the triangular frame 234 to move leftwards through the adjusting screw rod 238, pulling the clamping blocks 237 by the triangular frame 234 through the connecting rods 235, and simultaneously adjusting the vertical plate branched chains 236 on the screw rod 238 to move inwards, so that the three clamping blocks 237 simultaneously move inwards to clamp the end of the trapezoidal steel pipe;
s2: the outer clamping plate 254 is driven by the electric pressing rod 251 to tightly press the outer end face of the trapezoidal steel pipe;
s3: the cutting screw 33 is screwed to drive the upper clamping block 34, so that the cutting tool 36 is fixed on the fixed block 32, and the fixed block 32 is driven by the electric telescopic rod 31 to extend into the trapezoidal steel pipe;
s4, the end clamping mechanism 23 and the outer end clamping mechanism 25 are driven to clamp and fix the trapezoidal steel pipe to rotate through the rotation of the electric turntable 21, and meanwhile, the longitudinal electric slide block 15 and the transverse electric slide block 18 respectively move along the longitudinal limiting rod 14 and the transverse limiting rod 17 to realize the slotting and feeding of threads through mutual matching;
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.