CN118046078A - Propeller electron beam welding tool and propeller installation method - Google Patents

Abstract

The invention provides a propeller electron beam welding tool and a propeller installation method. The fastening device comprises a fixing part, a connecting part and a fastening part. The fastening part is detachably connected to the connecting part, and a first positioning part is arranged between the connecting part and the fixing part and limits the axial displacement and the radial displacement of the connecting part. A first limiting part is arranged between the fastening part and the connecting part, and the first limiting part limits the axial displacement of the connecting part and the propeller. The power output end of the driving part drives the propeller to rotate through the transmission mechanism, a third limiting part is arranged between the fastening device and the base, the third limiting part limits the displacement of the fastening device and the limiting mechanism, and the fastening device and the limiting mechanism are positioned on the same straight line. The invention is convenient for the installation or the disassembly of the screw propeller, reduces the amount of manual labor and ensures the rotating effect of the screw propeller.

Description

Propeller electron beam welding tool and propeller installation method

Technical Field

The invention relates to the technical field of electron beam welding, in particular to an electron beam welding tool for a propeller. The invention also relates to a propeller installation method for welding the propeller electron beam welding tool.

Background

Electron beam welding is a special high-technology process in machining, is similar to laser welding, and is mainly used in the fields with higher requirements on performances of automobiles, aerospace and machinery. The screw propeller is a major key structural member in the ship industry, has a decisive effect on the working performance of the ship complete machine, is very critical to the welding manufacturing position of the screw propeller, and has high welding precision requirement, so that an electron beam welding method is generally adopted, and positioning and clamping during screw propeller welding are realized by arranging a positioning clamp, so that position deviation is not easy to occur during welding, and the whole part is abandoned.

When the existing screw propeller is welded between the eccentric pin seat and the blade injection molding and molding assembly, a three-jaw structure is mostly adopted to fix the blade injection molding and molding assembly, but because the screw propeller is large in weight and long in appearance, four operators are required to lift, the screw propeller is kept balanced when the screw propeller is lifted manually, and the three-jaw structure is used for clamping parts. Or the screw propeller is lifted by a crane, and then is balanced manually, otherwise, three-jaw clamping is easily carried out under the inclined state of the part, so that the outer surface layer of the part is damaged. The method for clamping the part by the three claws cannot locate in the axial direction of the part, so that the locating precision of the welding position is poor, most of the welding position is determined in a visual inspection mode, and therefore, the welding quality cannot be ensured.

In addition, most of the existing propeller electron beam welding tools are complex in structure, difficult to adjust, long in occupied time for preparation work and disassembly work before welding, low in welding efficiency and unfavorable for the vigorous development of the fields of automobiles, aerospace and the like in China.

Disclosure of Invention

In view of the above, the invention aims to provide a propeller electron beam welding tool which can improve the positioning precision of propeller parts, simplify the installation, reduce the labor investment and improve the welding efficiency of the propeller.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

A propeller electron beam welding tool comprises a base, a fastening device and a limiting mechanism which are arranged on the base, and a driving part arranged on the base;

the fastening device comprises a fixed part connected to the base, a connecting part connected to the fixed part, and a fastening part coated on the propeller in a conformal manner;

The fastening part is detachably connected to the connecting part, a first positioning part is arranged between the connecting part and the fixing part, and the first positioning part is used for limiting the axial displacement and the radial displacement of the connecting part;

A first limiting part is arranged between the fastening part and the connecting part and is used for limiting the axial displacement of the propeller;

The power output end of the driving part drives the propeller to rotate through a transmission mechanism;

the fastening device and the limiting mechanism are provided with a third limiting part between the base, the third limiting part limits the displacement of the fastening device and the limiting mechanism, and the fastening device and the limiting mechanism are positioned on the same straight line.

Further, the transmission mechanism comprises a coupler arranged at the power output end of the driving part, a driving wheel sleeved at one end of the coupler, a driven wheel connected to the propeller, and a belt meshed with the driving wheel for transmission;

the screw propeller is provided with a connecting piece, and the connecting piece is used for fixedly connecting the driven wheel to the screw propeller.

Further, the connecting piece comprises a step, and the driven gear is provided with a step hole for accommodating the connecting piece;

The connecting piece is provided with a plurality of first mounting holes which are arranged in a circumferential array, the driven gear is provided with a first threaded hole which is correspondingly arranged in the first mounting holes, and the connecting piece is fixedly connected with the driven gear through bolts.

Further, the connecting piece comprises two semicircular pieces which are oppositely arranged and detachably connected, the two semicircular pieces are round, and the two semicircular pieces are covered and pressed on the screw;

the connecting piece with be equipped with the spacing portion of second between the screw, the spacing portion of second is including locating on the screw and along its radial outside convex first arch, be equipped with respectively on the semicircle piece with first protruding adaptation is connected first recess, first arch with first recess butt and two semicircle piece is fixed, so that the axial and the radial movement of connecting piece.

Further, the connecting part comprises a connecting main body and a circular ring protruding outwards from the connecting main body in the radial direction, a plurality of second connecting holes are uniformly distributed on the circumference of the connecting main body, the fastening part is provided with a second threaded hole corresponding to the second connecting holes, and the fastening part is fixedly bolted with the connecting part;

Third connecting holes which are uniformly distributed in the circumference are formed in the circular ring, third threaded holes corresponding to the positions of the third connecting holes are formed in the fixing portion, and the connecting portion is fixedly bolted to the fixing portion.

Further, the fixing part comprises a fixing seat connected to the base and a fixing plate connected to the fixing seat, a step hole for installing the circular ring is formed in the fixing plate, the outer diameter of the circular ring is matched with the large hole part of the step hole, the outer diameter of the connecting main body is smaller than the small hole part of the step hole, and one side face of the circular ring is abutted against the shoulder part of the step hole;

The stepped hole, the outer diameter of the circular ring and part of the connecting body form the first positioning part.

Further, the abutting surface of the fastening part and the screw propeller is matched with the appearance of the screw propeller,

The fastening part comprises a fastening main body and a convex ring protruding outwards from the fastening main body along the radial direction, the connecting main body is lapped on the convex ring, and the convex ring and the lapping surface of the connecting main body form the first limiting part.

Further, the limiting mechanism comprises a limiting seat connected to the base, a push rod screwed on the limiting seat, and a jackscrew connected to one end of the push rod facing the propeller;

a top plate is inserted into one end of the screw propeller, which faces the top wire, and the top wire is driven to be arranged on the top plate in a top mode so as to limit the axial displacement of the screw propeller;

the material of roof is copper.

Further, the screw propeller is sleeved with two heat conducting pieces;

the two heat conducting pieces are respectively arranged at two sides of the welding joint of the propeller;

the heat conducting piece is made of copper.

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

the screw electron beam welding frock of this embodiment is through setting up fastener and stop gear on the base, fixes the screw on fastening portion, and rethread fixed part is connected with connecting portion's dismantlement, and the installation or the dismantlement of screw of being convenient for. The connecting part is kept on the fixed part before being fixed by the limitation of the first positioning part, so that the manual labor amount can be reduced, and the axial displacement of the propeller is limited by the arrangement of the first limiting part. Through setting up third spacing portion, the displacement of restriction fastener and stop gear to guarantee screw and stop gear on same straight line, stop gear fixes on the screw, when the screw is driven the rotation by drive portion, guarantees the rotatory effect of screw.

In addition, the transmission mechanism is driven by a belt provided with a driving wheel, a driven wheel and a belt, so that the power of the driving part is transmitted to the propeller to rotate, and the electron beam welding is facilitated. Through set up first mounting hole and set up first screw hole on driven gear on the connecting piece to install or dismantle through the bolt between connecting piece and the driven gear, not only do benefit to driven gear and screw's installation, still be convenient for driven gear's standardized setting through the setting of connecting piece, need not to make special part, increase processing cost.

In addition, through setting up the connecting piece into two semicircle bodies, make the installation of connecting piece more convenient, be applicable to the installation requirement of the great screw of the appearance of structure complicacy to can not produce the damage to the screw in the installation.

Another object of the present invention is to provide an installation method for a propeller electron beam welding tool, wherein the propeller is installed on the propeller electron beam welding tool

Step one: wiping the screw propeller clean, placing the screw propeller on a working platform, buckling two fastening main bodies of the fastening part at corresponding positions of the screw propeller, and fastening the two fastening main bodies through bolts;

Step two: the connecting part is sleeved on the fastening part, is limited by the first limiting part and is fixed on the fastening part by bolts;

step three: fixing the connecting piece on the propeller, and connecting part of the transmission mechanism with the propeller;

Step four: carrying the screw propeller to the fixed part, enabling part of the screw propeller to pass through the center of the fixed part, enabling a worker to hold the screw propeller at one side far away from the limiting mechanism, and connecting and fastening the connecting part and the fixed part through bolts;

Step five: manually driving the limiting mechanism to approach the propeller until one end of the limiting mechanism is abutted against the propeller and locked;

Step six: and starting the driving part, and opening the electron beam equipment to weld the welding seam of the propeller by rotating the propeller.

According to the installation method for the propeller electron beam welding tool, the two fastening main bodies are fastened on the propeller in a buckling mode, the two fastening main bodies are fastened and fixed through bolts, the propeller is conveyed to the center of the fixing portion and penetrates through the fixing portion, and the fastening main bodies on the propeller are connected and fixed with the fixing portion through the connecting portion, so that the propeller can be installed quickly, the installation difficulty of the propeller is reduced, and the manual labor amount during installation is reduced. And moreover, through manual drive stop gear, with push rod overhead on the roof to further fixed screw, improve the axiality with the push rod when the screw is rotatory through third spacing portion, guarantee the rotatory effect in the screw rotation process, lay the basis for electron beam welding, guarantee the welding quality of screw.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

Fig. 1 is a schematic perspective view of a first view angle of a propeller electron beam welding tool according to an embodiment of the present invention;

Fig. 2 is a schematic perspective view of a second view angle of a propeller electron beam welding tool according to an embodiment of the present invention;

fig. 3 is a schematic bottom view of a propeller electron beam welding tool according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the structure at A-A in FIG. 3;

Fig. 5 is a schematic perspective view of a connector according to an embodiment of the present invention;

Fig. 6 is a schematic perspective view of a connecting portion according to an embodiment of the present invention;

FIG. 7 is a schematic view of a propeller without blades according to an embodiment of the present invention;

FIG. 8 is a schematic view showing a connection structure of a propeller and a fastening portion according to an embodiment of the present invention;

fig. 9 is a schematic perspective view showing one of the split parts of the fastening part according to the embodiment of the present invention.

Reference numerals illustrate:

1. a base; 2. a fastening device; 3. a limiting mechanism; 4. a driving section; 5. a transmission mechanism; 6. a propeller; 7. a heat conductive member; 8. welding seams;

101. A through groove;

201. a fixing portion; 202. a connection portion; 203. a fastening portion;

301. A limit seat; 302. a push rod; 303. a jackscrew; 304. a top plate;

501. A coupling; 502. a driving wheel; 503. driven wheel; 504. a connecting piece;

601. A first protrusion; 602. a concave groove;

2011. a fixing seat; 2012. a fixing plate; 2013. a step hole;

2021. A connecting body; 2022. a circular ring;

2031. a fastening body; 2032. a convex ring;

5041. A first mounting hole; 5042. a semicircular piece; 5043. a first groove;

20211. A second connection hole; 20221. and a third connection hole.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. In addition, the terms "first," "second," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in combination with specific cases.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

The present embodiment relates to a propeller electron beam welding tool including a base 1, a fastening device 2 and a limiting mechanism 3 provided on the base 1, and a driving portion 4 provided on the base 1. The fastening device 2 comprises a fixed part 201 connected to the base 1, a connecting part 202 connected to the fixed part 201, and a fastening part 203 shape-wise wrapped around the propeller 6.

Wherein the fastening portion 203 is detachably connected to the connecting portion 202, and a first positioning portion is provided between the connecting portion 202 and the fixing portion 201, the first positioning portion being used for limiting the axial displacement and the radial displacement of the connecting portion 202. A first limiting portion is provided between the fastening portion 203 and the connecting portion 202, the first limiting portion being for limiting axial displacement of the connecting portion 202 and the propeller 6. The power output end of the driving part 4 drives the propeller 6 to rotate through the transmission mechanism 5, a third limiting part is arranged between the fastening device 2 and the base 1 and between the limiting mechanism 3 and the base 1, the third limiting part limits the displacement of the fastening device 2 and the limiting mechanism 3, and the fastening device 2 and the limiting mechanism 3 are positioned on the same straight line.

In the screw electron beam welding tool of the embodiment, the screw 6 is fixed on the fastening portion 203 by arranging the fastening device 2 and the limiting mechanism 3 on the base 1, and the screw 6 is conveniently installed or detached by detachably connecting the fixing portion 201 with the connecting portion 202. The connecting portion 202 is held on the fixing portion 201 before being unsecured by the restriction of the first positioning portion, so that the amount of manual labor can be reduced, and the axial displacement of the propeller 6 is also restricted by providing the first restriction portion. Through setting up the third spacing portion, the displacement of restriction fastener 2 and stop gear 3 to guarantee that screw 6 and stop gear 3 are on same straight line, stop gear 3 is fixed in screw 6, when screw 6 is driven rotatory by drive portion 4, guarantee the rotatory effect of screw 6.

Based on the above overall description, as shown in fig. 1 to 4, in an exemplary structure of the propeller electron beam welding tool of this embodiment, the base 1 is formed into a rectangular frame structure, the bottom of the base 1 is provided with a connection hole connected with the ground or the workbench, and the base 1 is fixed on the ground or the workbench by a bolt, so that the propeller electron beam welding tool of this embodiment is convenient to move and convenient and flexible to use.

As also shown in fig. 1 to 4, the fastening device 2 and the stopper 3 are mounted on the top of the base 1, and the fastening device 2 and the stopper 3 are disposed at intervals in the width direction of the base 1 and are restricted on the bottom plate of the base 1 by a third stopper. The extending direction of the propeller 6 is consistent with the width direction of the base 1, when the propeller 6 is mounted on the fixing portion 201, one end of the propeller 6 blade is arranged at one end of the fixing portion 201 away from the limiting mechanism 3, and interference with parts of the welding tool cannot occur in the rotating process.

Specifically, the third limiting portion includes a through groove 101 provided on the top, and the through groove 101 is provided in the center of the top and penetrates in the top width direction. Corresponding grooves corresponding to the through grooves 101 are formed in the fastening device 2 and the limiting mechanism 3, the corresponding grooves and the through grooves 101 form a rectangular groove structure in a surrounding mode, and flat keys are arranged below the fastening device 2 and the limiting mechanism 3 correspondingly to the rectangular grooves so as to limit displacement of the fastening device 2 and the limiting mechanism.

As a specific embodiment, as shown in fig. 1 to 4, the transmission mechanism 5 includes a coupling 501 provided at a power output end of the driving section 4, a driving wheel 502 fitted over one end of the coupling 501, a driven wheel 503 connected to the propeller 6, and a belt for meshing transmission with the driving wheel 502 and the driven wheel 503. The propeller 6 is provided with a connecting member 504, and the connecting member 504 is used for fixedly connecting the driven wheel 503 to the propeller 6.

The transmission mechanism 5 of the present embodiment is driven by a belt provided with a driving wheel 502, a driven wheel 503 and a belt to transmit power of the driving section 4 to the propeller 6 to rotate, so as to facilitate electron beam welding. The device has the advantages of simple structure, easy installation and implementation, reduced cost and convenient standardization.

Further, as shown in fig. 4 and 5, the connecting member 504 includes a stepped arrangement, and the driven gear is provided with a stepped hole 2013 for receiving the connecting member 504. The connecting piece 504 is provided with a plurality of first mounting holes 5041 which are arranged in a circumferential array, the driven gear is provided with first threaded holes which are arranged corresponding to the first mounting holes 5041, and the connecting piece 504 is fixedly connected with the driven gear through bolts.

Through set up first mounting hole 5041 on connecting piece 504 and set up first screw hole on driven gear to install or dismantle through the bolt between connecting piece 504 and the driven gear, not only do benefit to the installation of driven gear and screw 6, still be convenient for driven gear's standardized setting through the setting of connecting piece 504, need not to make the special part, increase processing cost.

Preferably, as also shown in fig. 4 and 5, the connecting member 504 includes two semicircular members 5042 disposed opposite to each other and detachably connected to each other, and the two semicircular members 5042 are rounded and are wrapped around and press-connected to the propeller 6. The two semicircle pieces 5042 fasten and fix the two after being buckled through the bolts, and the connecting piece 504 is arranged into two semicircle bodies, so that the installation of the connecting piece 504 is more convenient, the installation requirement of the propeller 6 with a complex structure and a large appearance is met, and the damage to the propeller 6 can not be generated in the installation process.

Also, as shown in fig. 4 and fig. 4, a second limiting portion is disposed between the connecting member 504 and the propeller 6, the second limiting portion includes a first protrusion 601 disposed on the propeller 6 and protruding radially outward, the semicircular members 5042 are respectively provided with a first groove 5043 adapted to be connected with the first protrusion 601, and the first protrusion 601 and the first groove 5043 abut against each other and the two semicircular members 5042 are fixed, so that the connecting member 504 moves axially and radially. The connecting piece 504 is provided with the first groove 5043 so that the connecting piece is clamped and positioned with the first bulge 601 of the propeller 6, and the two semicircular bodies are fixed, so that the connecting piece 504 is fixed on the propeller 6, and the driven gear is mounted and positioned.

As a preferred embodiment, as shown in fig. 4 and 6, the connection portion 202 includes a connection body 2021, and a ring 2022 protruding radially outward from the connection body 2021, a plurality of second connection holes 20211 are uniformly circumferentially arranged on the connection body 2021, the fastening portion 203 is provided with second threaded holes corresponding to the second connection holes 20211, and the fastening portion 203 is bolted to the connection portion 202. Third connecting holes 20221 are uniformly distributed on the circumference of the circular ring 2022, third threaded holes corresponding to the positions of the third connecting holes 20221 are formed in the fixing portion 201, and the connecting portion 202 is fixedly bolted to the fixing portion 201.

In a specific structure, as shown in fig. 4 and 6, the connection portion 202 is a circular ring 2022 type rotator, and the circular ring 2022 and the connection body 2021 make the connection portion 202 be stepped rotators with different diameters. The second connection hole 20211 is a circular through hole, and penetrates the connection body 2021 in the thickness direction, and the connection body 2021 and the fastening portion 203 are connected and fixed by a bolt. And, the third connection holes 20221 are circular through holes formed in the circular ring 2022, and the connection portion 202 is fixed to the fixing portion 201 by bolts. So set up, through the butt of fastening portion 203 to screw 6, make no clearance between fastening portion 203 and the screw 6, in screw 6 spin welding process, the faying surface friction rotation of screw 6 and fastening portion 203, the atress equals to stability when increasing screw 6 rotation.

And, the fastening portion 203 and the fixing portion 201 are fixedly connected through the connecting portion 202, so that the propeller 6 is balanced through the fastening portion 203, and the propeller 6 is easy to mount and dismount, so that the problem of difficult mounting caused by the need of supporting the propeller 6 by a plurality of people in the prior art can be effectively avoided.

Preferably, as shown in fig. 1 to 4, the fixing portion 201 includes a fixing base 2011 connected to the base 1, and a fixing plate 2012 connected to the fixing base 2011, the fixing plate 2012 is provided with a step hole 2013 for installing a ring 2022, the outer diameter of the ring 2022 is adapted to the large hole portion of the step hole 2013, the outer diameter of the connecting body 2021 is adapted to the small hole portion of the step hole 2013, a side surface of the ring 2022 abuts against a shoulder portion of the step hole 2013, and the step hole 2013, the outer diameter of the ring 2022 and a part of the connecting body 2021 form a first positioning portion.

The corresponding groove on the fastening device 2 is formed at the bottom of the fixing seat 2011 and corresponds to the through groove 101. The connection portion 202 is inserted into the stepped hole 2013 by the restriction of the first positioning portion, the position of the connection portion 202 to which the propeller 6 is connected is determined with the fixing portion 201, and then the third connection hole 20221 is fixed by the bolt by rotating the adjustment connection portion 202 so as to correspond to the third screw hole.

As shown in fig. 4, as described above, the abutment surface of the fastening portion 203 with the propeller 6 is adapted to the outer shape of the propeller 6, the fastening portion 203 includes the fastening body 2031, and the collar 2032 protruding radially outward from the fastening body 2031, the connection body 2021 overlaps the collar 2032, and the overlapping surfaces of the collar 2032 and the connection body 2021 form the first stopper.

The connection portion 202 is fixed in position by the first stopper, and rotation and displacement of the connection portion 202 are restricted by positioning of the second connection hole 20211 and the second screw hole. The raised ring 2032 is used not only for providing the joint surface of the connection body 2021 but also for providing the second screw hole, so that the connection positioning effect of the connection portion 202 and the fastening portion 203 is good, and the assembly can be performed without performing position adjustment.

It should be noted that, as shown in fig. 7 to 9, the outer surface of the propeller 6 is provided with a baffle ring protruding radially outwards, the two baffle rings and the propeller 6 form a concave groove 602, and the fastening main body 2031 is clamped in the concave groove 602, so that the fastening portion 203 is fixed at the fixed position of the propeller 6, thereby further ensuring that when the propeller 6 is fixed on the fixed portion 201, the position of the propeller 6 required by the predetermined requirements can be obtained through the positions of the parts, ensuring that the welding seam 8 is located under the electron beam welding equipment, improving the accuracy of the welding position, avoiding the adjustment procedure and adjustment time caused by adjusting the position of the welding seam 8 on the welding fixture, greatly reducing manual work, avoiding preparation time, and improving efficiency.

As described in fig. 7 to 9, in order to facilitate the installation, the present embodiment provides the fastening portion 203 as two separate bodies, and the fastening portion 203 is formed by fastening the two separate bodies, which are fastened to the outside of the propeller 6 by bolts. Also, the abutment surface of the fastening portion 203 with the propeller 6 may be coated with a wear-resistant material or pressed into a layer of powder metallurgy bearing.

As a specific embodiment, as shown in fig. 1 to 4, the limiting mechanism 3 includes a limiting seat 301 connected to the base 1, a push rod 302 screwed to the limiting seat 301, and a top screw 303 connected to an end of the push rod 302 facing the propeller 6, wherein a top plate 304 is inserted into an end of the propeller 6 facing the top screw 303, and the top screw 303 is driven to be placed on the top plate 304 in a top manner so as to limit axial displacement of the propeller 6. The other end of the push rod 302 in this embodiment is provided with a handle, and when the handle is rocked, the push rod 302 moves axially relative to the limit seat 301, so that the jackscrew 303 approaches or moves away from the top plate 304.

Also, as shown in fig. 2, the top plate 304 is provided with a tapered hole for receiving the insertion of the jack screw 303, so that the jack screw 303 is positioned without coming out of the rotating propeller 6. The top plate 304 of this embodiment is inserted into a circular hole at the front end of the propeller 6, and its specific structure can be adaptively adjusted according to the matching shape of the propeller 6, which is not described herein.

As described above, the fixing base 2011 is fixed at the predetermined position of the base 1 by the flat key, the limit seat 301 is fixed at the predetermined position of the base 1 by the flat key, and the center of the jackscrew 303 and the center of the fixing portion 201 are located on the same straight line, that is, by the arrangement of the through groove 101, the center of the propeller 6 mounted on the fastening device 2 is coaxial with the center of the jackscrew 303, and the coaxiality is less than 0.5mm, so that the propeller 6 is guaranteed not to jump when rotating, the welding quality of the electron beam is guaranteed, and the welding precision is improved. Preferably, the top plate 304 of the present embodiment is made of copper. The limiting mechanism 3 of the present embodiment may refer to a structure of a jackscrew 303 on a tailstock in a numerically controlled lathe in the prior art, and will not be described herein.

In addition, as shown in fig. 2 and 4, two heat conducting members 7 are sleeved on the propeller 6, the two heat conducting members 7 are respectively arranged on two sides of the welding seam of the propeller 6, and the heat conducting members 7 are made of copper. The heat conducting members 7 of the present embodiment are circular rings 2022 enclosed on the outer diameter of the propeller 6, each heat conducting member 7 is divided into two semicircular rings 2022, and the two semicircular rings 2022 are fastened to the propeller 6 by bolting.

And, along screw 6 axial, two heat conduction spare 7 locate the both sides of the weld joint 8 that wait to weld of screw 6 respectively, when electron beam welding, carry out the heat conduction through the heat conduction spare 7 of weld joint 8 both sides to and foretell roof 304 derives the welding heat in screw 6 front portion, prevents to appear crackle or the problem emergence such as weld joint 8 deformation worsening because of local overheat causes screw 6, avoids causing whole screw 6 to become invalid.

In addition, the embodiment also relates to an installation method for the propeller electron beam welding tool, wherein the propeller 6 is installed on the propeller electron beam welding tool, and the specific steps are as follows:

Step one: the propeller 6 is wiped clean and placed on a working platform, the two fastening main bodies 2031 of the fastening part 203 are buckled at corresponding positions of the propeller 6, and the two fastening main bodies 2031 are fastened through bolts;

Step two: the connecting part 202 is sleeved on the fastening part 203, is limited by a first limiting part, and then the connecting part 202 is fixed on the fastening part 203 by a bolt;

Step three: the connecting piece 504 is fixed on the propeller 6, and a part of the transmission mechanism 5 is connected with the propeller 6. Specifically, the two semicircular pieces 5042 are buckled on the propeller 6 and limited by the second limiting part, the two semicircular pieces 5042 are fixedly fastened by bolts, and the driven gear is fixedly connected to the connecting piece 504 by bolts;

step four: carrying the propeller 6 to the fixed part 201, enabling part of the propeller 6 to pass through the center of the fixed part 201, enabling a worker to hold the propeller 6 at one side far away from the limiting mechanism 3, and connecting and fastening the connecting part 202 and the fixed part 201 through bolts;

Step five: the manual driving limiting mechanism 3 approaches the propeller 6, specifically, in the embodiment, the handle is manually rocked to enable the push rod 302 to axially move relative to the limiting seat 301, and the push rod 302 approaches the propeller 6 until the jackscrew 303 abuts against the top plate 304 and is locked;

Step six: the driving part 4 is started, the propeller 6 rotates, and the electron beam device is turned on to weld the weld joint 8 of the propeller 6.

According to the installation method for the propeller electron beam welding tool, the two fastening main bodies 2031 are fastened on the propeller 6 in a buckling manner, the two fastening main bodies 2031 are fastened and fixed through bolts, the propeller 6 is conveyed to the center of the fixing portion 201 and partially penetrates through the fixing portion, the fastening main bodies 2031 on the propeller 6 are connected and fixed with the fixing portion 201 through the connecting portion 202, rapid installation of the propeller 6 is achieved, installation difficulty of the propeller 6 is reduced, and manual labor during installation is reduced. And, through manual drive stop gear 3, with push rod 302 overhead on roof 304 to further fixed screw 6, improve the axiality with push rod 302 when screw 6 is rotatory through third spacing portion, guarantee the rotatory effect in the screw 6 rotation process, lay the basis for electron beam welding, guarantee the welding quality of screw 6.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. The utility model provides a screw electron beam welding frock which characterized in that:

comprises a base (1), a fastening device (2) and a limiting mechanism (3) which are arranged on the base (1), and a driving part (4) which is arranged on the base (1);

The fastening device (2) comprises a fixed part (201) connected to the base (1), a connecting part (202) connected to the fixed part (201), and a fastening part (203) coated on the propeller (6) in a conformal manner;

The fastening part (203) is detachably connected to the connecting part (202), and a first positioning part is arranged between the connecting part (202) and the fixing part (201) and is used for limiting the axial displacement and the radial displacement of the connecting part (202);

a first limiting part is arranged between the fastening part (203) and the connecting part (202), and is used for limiting the axial displacement of the propeller (6);

The power output end of the driving part (4) drives the propeller (6) to rotate through a transmission mechanism (5);

the fixing device is characterized in that a third limiting part is arranged between the fixing device (2) and the limiting mechanism (3) and the base (1), the third limiting part limits the displacement of the fixing device (2) and the limiting mechanism (3), and the fixing device (2) and the limiting mechanism (3) are located on the same straight line.

2. The propeller electron beam welding tooling of claim 1, wherein:

The transmission mechanism (5) comprises a coupler (501) arranged at the power output end of the driving part (4), a driving wheel (502) sleeved at one end of the coupler (501), a driven wheel (503) connected to the propeller (6), and a belt meshed with the driving wheel (502) and driven by the driven wheel (503);

The propeller (6) is provided with a connecting piece (504), and the connecting piece (504) is used for fixedly connecting the driven wheel (503) to the propeller (6).

3. The propeller electron beam welding tooling of claim 2, wherein:

the connecting piece (504) comprises a step arrangement, and the driven gear is provided with a step hole (2013) for accommodating the connecting piece (504);

The connecting piece (504) is provided with a plurality of first mounting holes (5041) which are arranged in a circumferential array, the driven gear is provided with first threaded holes which are arranged corresponding to the first mounting holes (5041), and the connecting piece (504) is fixedly connected with the driven gear through bolts.

4. A propeller electron beam welding tooling as claimed in claim 3, wherein:

The connecting piece (504) comprises two semicircular pieces (5042) which are oppositely arranged and detachably connected, and the two semicircular pieces (5042) are enclosed to form a circle and are covered and pressed on the propeller (6);

The utility model discloses a motor vehicle connection device, including connecting piece (504) with be equipped with second spacing portion between screw (6), second spacing portion is including locating on screw (6) and along its radial outside convex first arch (601), be equipped with on semicircle piece (5042) respectively with first recess (5043) that first arch (601) adaptation is connected, first arch (601) with first recess (5043) butt and two semicircle piece (5042) are fixed, so that the axial and the radial removal of connecting piece (504).

5. The propeller electron beam welding tool of claim 4, wherein:

The connecting part (202) comprises a connecting main body (2021) and a circular ring (2022) protruding outwards from the connecting main body (2021) in a radial direction, a plurality of second connecting holes (20211) which are uniformly distributed in the circumference are formed in the connecting main body (2021), the fastening part (203) is provided with second threaded holes corresponding to the second connecting holes (20211), and the fastening part (203) is fixedly bolted with the connecting part (202);

third connecting holes (20221) which are uniformly distributed and arranged in the circumference are formed in the circular ring (2022), third threaded holes corresponding to the positions of the third connecting holes (20221) are formed in the fixing portion (201), and the connecting portion (202) is fixedly bolted with the fixing portion (201).

6. The propeller electron beam welding tool of claim 5, wherein:

The fixing part (201) comprises a fixing seat (2011) connected to the base (1), and a fixing plate (2012) connected to the fixing seat (2011), a step hole (2013) for installing the circular ring (2022) is formed in the fixing plate (2012), the outer diameter of the circular ring (2022) is matched with the large hole part of the step hole (2013), the outer diameter of the connecting main body (2021) is smaller than the small hole part of the step hole (2013), and one side surface of the circular ring (2022) is abutted against the shoulder part of the step hole (2013);

The stepped hole (2013), the outer diameter of the ring (2022), and a part of the connecting body (2021) form the first positioning portion.

7. The propeller electron beam welding tooling of claim 6, wherein:

the abutting surface of the fastening part (203) and the screw propeller (6) is matched with the appearance of the screw propeller (6),

The fastening portion (203) includes a fastening body (2031) and a collar (2032) protruding radially outward from the fastening body (2031), the connection body (2021) overlaps the collar (2032), and the overlapping surfaces of the collar (2032) and the connection body (2021) form the first limit portion.

8. The propeller electron beam welding tooling of claim 1, wherein:

The limiting mechanism (3) comprises a limiting seat (301) connected to the base (1), a push rod (302) connected to the limiting seat (301) in a threaded manner, and a jackscrew (303) connected to one end of the push rod (302) facing the propeller (6);

A top plate (304) is inserted into one end of the screw propeller (6) towards the top wire (303), and the top wire (303) is driven to be propped against the top plate (304) so as to limit the axial displacement of the screw propeller (6);

the top plate (304) is made of copper.

9. The propeller electron beam welding tooling of claim 1, wherein:

two heat conducting pieces (7) are sleeved on the propeller (6);

the two heat conducting pieces (7) are respectively arranged at two sides of a welding joint of the propeller (6);

the heat conducting piece (7) is made of copper.

10. A mounting method for a propeller electron beam welding fixture, mounting the propeller (6) on a propeller electron beam welding fixture as claimed in claim 2, characterized in that:

step one: wiping the propeller (6) clean and placing the propeller on a working platform, and mounting and fastening the fastening part (203) at the corresponding position of the propeller (6) through bolts;

Step two: the connecting part (202) is sleeved on the fastening part (203), the first limiting part is used for limiting, and then the connecting part (202) is fixed on the fastening part (203) through bolts;

Step three: fixing the connecting piece (504) on the propeller (6), and connecting part of the transmission mechanism (5) with the propeller (6);

Step four: carrying the propeller (6) to the fixed part (201), enabling part of the propeller (6) to pass through the center of the fixed part (201), enabling a worker to hold the propeller (6) at one side far away from the limiting mechanism (3), and connecting and fastening the connecting part (202) and the fixed part (201) through bolts;

Step five: manually driving the limiting mechanism (3) to approach the propeller (6) until one end of the limiting mechanism (3) is abutted against the propeller (6) and locked;

Step six: and starting the driving part (4), and opening the electron beam equipment to weld the welding seam (8) of the propeller (6) by rotating the propeller (6).