CN116551066A - Rotary processing device for outer wall of orifice of thin-wall small-diameter elbow - Google Patents

Abstract

The upper end of a pipe bending holder is connected with a guide rail fixed on a workbench in an adaptive manner, a straight pipe section of the pipe bending facing the end of a pipe outer diameter processor is arranged in parallel with the guide rail and coaxially adaptive to a guide hole of the pipe outer diameter processor, a rotary driving device fixed on the workbench is arranged below the guide rail, the output end of the rotary driving device is coaxially fixedly connected with the pipe outer diameter processor, and the rotary driving device drives the pipe outer diameter processor to carry out rotary cutting processing on the outer wall of the pipe opening of the straight pipe section of the pipe bending moving along the length direction of the guide rail. The invention solves the problems of irregular pipe orifice outer diameter, poor pipe diameter roundness, poor cylindricity, insufficient uniformity of pipe wall thickness, poor size consistency and potential safety hazard existing when the straight pipe section of the pipe bending piece is polished in a transmission manual polishing mode, and the design of the pipe outer diameter processor can avoid deformation of the pipe fitting due to unidirectional cutting force, and has high processing efficiency and good size consistency.

Description

Rotary processing device for outer wall of orifice of thin-wall small-diameter elbow

Technical Field

The invention belongs to the technical field of processing of thin-wall small-diameter pipes of diesel engines, and particularly relates to a rotary processing device for the outer wall of a pipe orifice of a thin-wall small-diameter bent pipe.

Background

The small-diameter pipeline in the marine diesel engine pipeline system is a gas and oil transmission channel for providing medium transmission with the functions of diesel engine starting, lubrication, combustion and the like, has complex space shape and is mostly a bent pipe fitting, and belongs to typical bent pipe fitting products with multiple specifications, multiple varieties and multiple forms. In the installation process of the diesel engine pipeline, the large-diameter pipeline is connected by adopting a flange and bolts, and for capillaries with the outer diameters phi 6-phi 12, the method of cutting sleeve connection is adopted in most cases, the pipe fitting is inserted into the cutting sleeve joint with corresponding specification, and then the connection and sealing of the pipe fitting are formed by screwing the nuts in the cutting sleeve joint. Thereby realizing the effective transmission of the medium such as gas, oil and the like. In actual production, the pipe fitting adopts the pipe material of national standard GB/T8163-2018, and the cutting ferrule adopts the cutting ferrule of national standard GB/T3764-2008; in the production process, the condition that the pipe fitting cannot be installed into the cutting sleeve joint often occurs. Through size detection, the pipe fitting external diameter is 0.15 than cutting ferrule joint hole diameter, leads to the installation unable to go on.

The conventional processing method of the straight pipe fitting is to make the pipe fitting rotate around the axis, and the fixed cutter cuts the part to be processed of the pipe fitting to form the processing of the size; the bent pipe fitting has a bent part generated by the axis of the pipe fitting and then rotates along a certain central axis, so that the bent pipe fitting part rotates to interfere with equipment or environment; after the pipe fitting is bent, the straight line section is clamped when the bending is needed to be cut off, so that the coordinate value of the port of the straight line section meets the requirement of a design drawing, and the outer diameter of the port of the bent pipe fitting cannot be machined before the bending; after cutting off the straight line section clamped during bending, the elbow fitting is manually polished on a grinder in a relatively efficient manual polishing mode to ensure production efficiency, and the outside diameter of the pipe orifice is manually polished on site to complete the installation of the corresponding cutting sleeve joint; the defects are that: the machining mode is high in operator experience dependency, the pipe orifice is irregular in outer diameter, the pipe diameter roundness and cylindricity are poor, uniformity of pipe wall thickness is insufficient, size consistency is poor, fatigue is easily caused by manual operation, potential safety hazards are caused, tightness is unstable after the pipe fitting clamping sleeve is connected with a clamping sleeve, under the working state, a pipe fitting clamping sleeve component is subjected to alternating stress due to the actual working condition of a diesel engine, the pipe fitting clamping sleeve component is easily a cracking source of medium leakage, and leakage risks exist, so that improvement is necessary for the problems.

Disclosure of Invention

The invention solves the technical problems that: the utility model provides a thin wall minor diameter return bend mouth of pipe outer wall gyration processingequipment, based on rotatory drive arrangement is the rotatory back of power supply drive pipe external diameter processor treat processing return bend spare straightway external diameter along circumferencial direction processing, it is irregular to have the mouth of pipe external diameter when having solved transmission manual mode of polishing to polish processing return bend spare straightway pipe section, pipe diameter circularity, cylindricity is poor, uniformity of pipe wall thickness is not enough, size uniformity is poor and there is some listed as problems of potential safety hazard, the design of pipe external diameter processor can avoid unidirectional cutting force to make the pipe fitting warp, machining efficiency is high, size uniformity is good, mechanical processing course fail safe nature is high.

The invention adopts the technical scheme that: the rotary machining device comprises a bent pipe holder, wherein the lower end of the bent pipe holder is fixedly clamped at the bending part of the bent pipe, the upper end of the bent pipe holder is connected with a guide rail which is fixed on a workbench in an adaptive manner, a pipe outer diameter machining device is arranged on the outer side of the guide rail, a straight pipe section of the bent pipe, which faces to the pipe outer diameter machining device, is arranged in parallel with the guide rail and is coaxially adaptive to a guide hole of the pipe outer diameter machining device, a rotary driving device which is fixed on the workbench is arranged below the guide rail, the output end of the rotary driving device is fixedly connected with the pipe outer diameter machining device in a coaxial manner, and the rotary driving device drives the pipe outer diameter machining device to carry out rotary cutting machining on the outer wall of the pipe opening of the straight pipe section of the bent pipe, which moves along the length direction of the guide rail.

The pipe outer diameter processor comprises a clamp and a blade, the clamp is of a cylindrical structure with a guide hole in the middle, two chip grooves which are symmetrically distributed in a rotating mode by 180 degrees and communicated with the guide hole are formed in the outer circumferential wall of the clamp, the blade is fixed on the chip grooves, the blade is used for carrying out rotary cutting on the outer wall of a pipe orifice of a straight pipe section of the bent pipe piece when the pipe outer diameter processor rotates, a connecting rod is coaxially fixed at one end of the clamp towards the rotary driving device, and the connecting rod is fixedly connected with the rotary output end of the rotary driving device.

Further, the blade is fixed on the chip groove surface through a screw, and the limiting pin which is fixed on the chip groove surface and is positioned on the outer side of the blade is used for positioning and fastening the blade.

Further, the bent pipe holder comprises a holder, a through hole on the holder is matched with the guide rail and can slide along the length direction of the guide rail, a holding groove is formed in the lower end of the holder, rubber pads are fixed on groove surfaces on two sides of the holding groove, a bent part of the bent pipe is located between the two rubber pads, and the bent pipe is clamped and fixed on the holder through a locking bolt arranged on the holder and located above the bent part of the bent pipe and a butterfly nut connected with the locking bolt in a matched mode.

Further, the rotary driving device adopts a pistol drill or an air drill.

Further, the guide rail is fixed on the workbench through clamping cushion blocks positioned at two sides of the pipe bending piece clamp holder.

Further, the clamping cushion block comprises a fixed cushion block and a connecting cushion block, the fixed cushion block is fixed on the workbench, grooves with corresponding positions are formed in the outer end face of the fixed cushion block and the inner end face of the connecting cushion block, and guide rails located in the two grooves are in threaded connection with the fixed cushion block through connecting bolts which are adapted to the two through holes of the connecting cushion block and then clamped and fixed.

Compared with the prior art, the invention has the advantages that:

1. according to the technical scheme, the outer diameter of the straight-line section of the bent pipe piece to be processed is processed along the circumferential direction after the rotary driving device drives the pipe outer diameter processor to rotate, so that the problems of irregular pipe orifice outer diameter, pipe diameter roundness, poor cylindricity, insufficient uniformity of pipe wall thickness, poor dimensional consistency and potential safety hazards existing in the polishing process of the straight-line section of the bent pipe piece in a transmission manual polishing mode are solved;

2. the technical scheme is convenient for operation on a workbench, and provides a power source for high-speed rotation of the cutter by means of a common rotary electric or pneumatic tool, so that the cutter can be quickly installed and detached;

3. the bent pipe fitting quality of the technical scheme is greatly improved: the outer diameter of the port of the bent pipe fitting is machined, so that the bent pipe fitting has the characteristic of good dimensional consistency of parts, realizes smooth connection with a clamping sleeve joint, has good wall thickness consistency after machining, and eliminates hidden danger of stress concentration caused by uneven wall thickness in the use process; the hidden danger of leakage is eliminated;

4. after the bent pipe fitting is clamped, the bent pipe fitting enters and exits once along the axial direction, so that the outer diameter of the pipe is machined, the checking procedure of repeated comparison of manual grinding is eliminated, the part transferring time is shortened, the part transferring time can be finished on the piping site, the machining efficiency is improved, and the cost is reduced;

5. the technical scheme has the advantages of simple structure, novel design, convenient and quick disassembly and assembly, capability of avoiding deformation of the pipe fitting due to unidirectional cutting force due to the design of the pipe outer diameter processor, convenience in chip removal and high safety and reliability in the mechanical processing process, and the open chip removal groove not only provides an installation environment for the cutter.

Drawings

FIG. 1 is a front elevational view of the structure of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a left side view of the structure of the present invention;

fig. 4 is a cross-sectional view A-A of fig. 1.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The rotary processing device for the outer wall of the thin-wall small-diameter elbow pipe orifice comprises an elbow pipe clamp holder 1, wherein the lower end of the elbow pipe clamp holder is fixedly clamped at the bending part of an elbow pipe fitting 3, the upper end of the elbow pipe fitting clamp holder 1 is in adaptive connection with a guide rail 2 fixed on a workbench, a pipe outer diameter processor 5 is arranged below the guide rail 2, a straight pipe section of the elbow pipe fitting 3 facing the pipe outer diameter processor 5 end is arranged in parallel with the guide rail 2 and is coaxially adaptive to a guide hole of the pipe outer diameter processor 5, a rotary driving device 4 fixed on the workbench is arranged below the guide rail 2, the output end of the rotary driving device 4 is fixedly connected with the pipe outer diameter processor 5 in a coaxial manner, and the rotary driving device 4 drives the pipe outer diameter processor 5 to carry out rotary cutting processing on the outer wall of the pipe orifice of the straight pipe section of the elbow pipe fitting 3 moving along the length direction of the guide rail 2; in the structure, the outer diameter of the straight line section of the bent pipe fitting 3 to be processed is processed along the circumferential direction after the rotary driving device 4 is used as a power source to drive the pipe outer diameter processor to rotate, so that the problems of irregular pipe orifice outer diameter, pipe diameter roundness, poor cylindricity, insufficient uniformity of pipe wall thickness, poor dimensional consistency and potential safety hazards existing in the polishing process of the straight line section of the bent pipe fitting 3 in a manual transmission polishing mode are solved;

the pipe outer diameter processor 5 has the following specific structure: the pipe outer diameter processor 5 comprises a clamp holder 5-1 and a blade 5-2, wherein the clamp holder 5-1 is of a cylindrical structure with a guide hole in the middle, two chip removal grooves 5-3 which are symmetrically distributed in a rotation mode by 180 degrees (namely, are symmetrically distributed in the center) and are communicated with the guide hole are formed in the outer circumferential wall of the clamp holder 5-1, the blade 5-2 is fixed on the chip removal grooves 5-3, the blade 5-2 carries out rotary cutting on the outer wall of a pipe orifice of a straight pipe section of the bent pipe piece 3 when the pipe outer diameter processor 5 rotates, a connecting rod 5-6 is coaxially fixed at one end of the clamp holder 5-1 facing the rotary driving device 4, and the connecting rod 5-6 is fixedly connected with the rotary output end of the rotary driving device 4; in the structure, the outer diameter of the straight pipe section of the bent pipe fitting 3 is processed along the circumferential direction, and the maximum value of the processing allowance is 0.20mm (single side 0.2, usually the allowance in the diameter direction, and the range of +/-0.3 in national standard is satisfied); the cutting tool (namely the blade 5-2) is designed to be in a central symmetry mode, so that the straight pipe section of the bent pipe fitting 3 is prevented from being deformed by unidirectional cutting force.

The fixing structure of the blade 5-2 on the holder 5-1 is specifically as follows: the blade 5-2 is fixed on the groove surface of the chip groove 5-3 through the screw 5-4, and the limiting pin 5-5 which is fixed on the groove surface of the chip groove 5-3 and is positioned outside the blade 5-2 is used for positioning and fastening the blade 5-2.

The specific structure of the elbow fitting holder 1 is as follows: the bent pipe fitting clamp holder 1 comprises a clamp holder 1-1, a through hole on the clamp holder 1-1 is matched with a guide rail 2 and can slide along the length direction of the guide rail 2, a clamp groove 1-2 is formed in the lower end of the clamp holder 1-1, rubber pads 1-3 are fixed on groove surfaces on two sides of the clamp groove 1-2, a bending part of the bent pipe fitting 3 is positioned between the two rubber pads 1-3, and the bent pipe fitting 3 is clamped and fixed on the clamp holder 1-1 through a locking bolt 1-4 arranged on the clamp holder 1-1 and positioned above the bending part of the bent pipe fitting 3 and a butterfly nut 1-5 connected with the locking bolt 1-4 in an matched mode; in the structure, the rubber pad 1-3 can prevent the surface of the bent pipe fitting 3 from being damaged in the clamping process, and plays a role in protecting the bent pipe fitting 3.

Specifically, the rotary driving device 4 adopts a pistol drill or an air drill; the operation on a workbench is facilitated, and a power source for high-speed rotation of the cutter is provided by means of a common rotary electric or pneumatic tool, so that the cutter can be quickly installed and detached; when the rotary driving device 4 drives the pipe outer diameter processor 5 to rotate and then carries out rotary cutting on the straight pipe section of the bent pipe fitting 3, the position of the bent pipe fitting 3 is fixed, and the working mode can eliminate interference with equipment or environment in the rotary working mode of the bent pipe fitting 3, so that the safety of the bent pipe fitting 3 during cutting is improved;

the fixing structure of the guide rail 2 on the workbench is specifically as follows: the guide rail 2 is fixed on the workbench through clamping cushion blocks 6 positioned at two sides of the pipe bending piece clamp holder 1; specifically, the clamping cushion block 6 comprises a fixed cushion block 6-1 and a connecting cushion block 6-2, the fixed cushion block 6-1 is fixed on the workbench, grooves with corresponding positions are formed in the outer end face of the fixed cushion block 6-1 and the inner end face of the connecting cushion block 6-2, and the guide rail 2 positioned in the two grooves is clamped and fixed after being in threaded connection with the fixed cushion block 6-1 through connecting bolts 6-3 which are adapted to two through holes of the connecting cushion block 6-2.

The quality of the bent pipe fitting 3 is greatly improved: the outer diameter of the port of the elbow fitting 3 is machined, so that the elbow fitting has the characteristic of good dimensional consistency of parts, smooth connection with a cutting sleeve joint is realized, the consistency of the wall thickness of the machined fitting is good, and the hidden danger of stress concentration caused by uneven wall thickness is eliminated in the use process; the hidden danger of leakage is eliminated; after the bent pipe fitting 3 is clamped, the bent pipe fitting enters and exits once along the axial direction, so that the outer diameter of the pipe is machined, the checking procedure of repeated comparison of manual grinding is eliminated, the part transferring time is shortened, the part transferring time can be finished on the piping site, the machining efficiency is improved, and the cost is reduced; the pipe outer diameter processor has the advantages that the structure is simple, the design is novel, the dismounting is convenient and quick, the pipe outer diameter processor is designed to avoid deformation of a pipe fitting due to unidirectional cutting force, the open chip removal groove 5-3 not only provides an installation environment for a cutter, but also facilitates chip removal, and the safety and reliability of the mechanical processing process are high.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The rotary processing device for the outer wall of the orifice of the thin-wall small-diameter bent pipe is characterized in that: including lower extreme and curved pipe fitting (3) bending part centre gripping fixed return bend spare holder (1), return bend spare holder (1) upper end and guide rail (2) adaptation connection on being fixed in the workstation, guide rail (2) outside is equipped with pipe external diameter processor (5) that the middle part system had the guiding hole, and straight tube section and guide rail (2) parallel arrangement and coaxial adaptation of return bend spare (3) towards pipe external diameter processor (5) end are in the guiding hole of pipe external diameter processor (5), guide rail (2) below is equipped with rotary driving device (4) that are fixed in on the workstation, and rotary driving device (4) output and pipe external diameter processor (5) coaxial link firmly to carry out rotary cutting processing by rotary driving device (4) drive pipe external diameter processor (5) to return bend spare (3) straight tube section outer wall along guide rail (2) length direction removal, be equipped with on pipe external diameter processor (5) with the guiding hole intercommunication and be used for the open chip removal chamber mouth of pipe that the metal chip was discharged.

2. The thin-walled small-diameter elbow nozzle outer wall rotary machining device according to claim 1, wherein: the pipe outer diameter processor (5) comprises a clamp holder (5-1) and a blade (5-2), the clamp holder (5-1) is of a cylindrical structure with a guide hole in the middle, two chip removal grooves (5-3) which are symmetrically distributed in a 180-degree rotation mode and communicated with the guide hole to form an open chip removal cavity channel are formed in the outer circumferential wall of the clamp holder (5-1), the blade (5-2) is fixed on the chip removal grooves (5-3), the blade (5-2) rotates to cut the outer wall of a pipe orifice of a straight pipe section of the bent pipe piece (3) in a rotary mode when the pipe outer diameter processor (5) rotates, a connecting rod (5-6) is coaxially fixed at one end of the clamp holder (5-1) towards a rotary driving device (4), and the connecting rod (5-6) is fixedly connected with the rotary output end of the rotary driving device (4).

3. The thin-walled small-diameter elbow nozzle outer wall rotary machining device according to claim 2, wherein: the blade (5-2) is fixed on the groove surface of the chip groove (5-3) through the screw (5-4), and is fixed on the groove surface of the chip groove (5-3) and is positioned on the limiting pin (5-5) on the outer side of the blade (5-2) to fix and fasten the blade (5-2).

4. The thin-walled small-diameter elbow nozzle outer wall rotary machining device according to claim 1, wherein: the pipe bending piece clamp holder (1) comprises a clamping seat (1-1), a through hole in the clamping seat (1-1) is matched with the guide rail (2) and can slide along the length direction of the guide rail (2), a clamping groove (1-2) is formed in the lower end of the clamping seat (1-1), rubber pads (1-3) are fixed on groove surfaces on two sides of the clamping groove (1-2), a bending part of the pipe bending piece (3) is located between the two rubber pads (1-3), and the pipe bending piece (3) is clamped and fixed on the clamping seat (1-1) through a locking bolt (1-4) which is arranged on the clamping seat (1-1) and is located above the bending part of the pipe bending piece (3) and a butterfly nut (1-5) which is connected with the locking bolt (1-4) in an adaptive mode.

5. The thin-walled small-diameter elbow nozzle outer wall rotary processing device according to claim 1 or 2 or 3 or 4, wherein: the rotary driving device (4) adopts a pistol drill or an air drill.

6. The thin-walled small-diameter elbow nozzle outer wall rotary machining device according to claim 5, wherein: the guide rail (2) is fixed on the workbench through clamping cushion blocks (6) positioned at two sides of the bent pipe fitting clamp holder (1).

7. The thin-walled small-diameter elbow nozzle outer wall rotary machining device according to claim 6, wherein: the clamping cushion block (6) comprises a fixed cushion block (6-1) and a connecting cushion block (6-2), the fixed cushion block (6-1) is fixed on the workbench, grooves with corresponding positions are formed in the outer end face of the fixed cushion block (6-1) and the inner end face of the connecting cushion block (6-2), and the guide rail (2) located in the two grooves is clamped and fixed after being connected with the fixed cushion block (6-1) through connecting bolts (6-3) in two through holes of the connecting cushion block (6-2) in a threaded mode.