CN115673645A

CN115673645A - Positioning tool for assembly welding of axle housing rear cover

Info

Publication number: CN115673645A
Application number: CN202211459724.3A
Authority: CN
Inventors: 吴志强; 徐力山; 付正勇; 张伟
Original assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Current assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-02-03

Abstract

The invention discloses an axle housing rear cover assembly welding positioning tool which comprises a machine table, a plurality of supporting seats, a first positioning device, a second positioning device and a plurality of third positioning devices, wherein the machine table is provided with a supporting disc, and a profiling piece is installed on the supporting disc. Through setting up first positioner and second positioner, can the automatic positioning axle housing, through setting up the profile modeling, can accurate location back lid, first positioner, second positioner and profile modeling cooperate, can effectively improve the positioning accuracy between axle housing and the back lid, improve the off-the-shelf yields of axle housing and uniformity, support the back lid through setting up third positioner, can reduce the clearance between axle housing and the back lid, effectively improve the welding quality of axle housing back lid.

Description

Axle housing rear cover assembly welding positioning tool

Technical Field

The invention relates to the technical field of tool fixtures, in particular to an assembling and welding positioning tool for an axle housing rear cover.

Background

The axle housing is an assembly base body for mounting a main speed reducer, a differential mechanism, a half shaft and wheels on a vehicle, and is an important component of a drive axle and one of main components of a running system. Generally speaking, ordinary non-disconnected transaxle axle housing is a rigid hollow beam who supports on left and right driving wheel, the cavity in the middle of the axle housing is used for installing various parts, one side of cavity is equipped with the lute hole that supplies the user to assemble, overhaul the part, the opposite side is equipped with the back lid of closed cavity, because the axle housing needs the multiple part of reasonable installation, the appearance of axle housing is complicated changeable usually, axle housing and back lid are not suitable for the integrated production, when producing the axle housing, usually select the welding method to connect axle housing and back lid, but because axle housing and back lid all are manual positioning installation, positioning accuracy between axle housing and the back lid is poor, back lid terminal surface unevenness still can lead to the too big scheduling problem of back lid axle housing assembly welding time gap, seriously influence welding quality.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the axle housing and rear cover assembly welding positioning tool can accurately position the axle housing and the rear cover, reduce the gap between the axle housing and the rear cover and effectively improve the welding quality of the axle housing and the rear cover.

The axle housing rear cover assembly welding positioning tool comprises a machine table, a plurality of supporting seats, a first positioning device, a second positioning device and a plurality of third positioning devices, wherein the machine table is provided with a supporting disc, and a profiling piece matched with the shape of a rear cover is mounted on the supporting disc; a plurality of supporting seats are arranged at intervals along the circumferential direction of the supporting disc and are positioned below the profiling piece, and a supporting surface for supporting the axle housing is formed on each supporting seat; the first positioning device is arranged below the supporting disc and comprises a plurality of first positioning blocks which are arranged at equal intervals along the circumferential direction of the supporting disc, the first positioning blocks are connected with a first driving assembly, the first driving assembly is arranged on the machine table, and the first driving assembly is used for driving the first positioning blocks to synchronously move along the radial direction of the supporting disc; the second positioning device is arranged on one side of the supporting disc and comprises two second positioning blocks and a second driving assembly which are arranged oppositely, the second driving assembly is arranged on the machine table and is used for driving the two second positioning blocks to move oppositely to clamp the axle housing; the plurality of third positioning devices are arranged along the circumferential interval of the supporting disc and comprise third positioning blocks, the third positioning blocks are located above the supporting surface, the third positioning devices are connected with third driving pieces, the third driving pieces are installed on the machine table, and the third driving pieces are used for driving the third positioning blocks to face or deviate from the supporting surface to move.

According to the invention, the assembly welding and positioning tool for the axle housing rear cover at least has the following beneficial effects: before a user welds a rear cover and the axle housing, the axle housing can be placed on a supporting surface of a supporting seat, at the moment, a profiling piece penetrates through lute holes of the axle housing, a first positioning block is positioned in the lute holes, then, a first driving assembly is started, the first driving assembly drives a plurality of first positioning blocks to synchronously move outwards along the radial direction of the supporting disk, the first positioning blocks can push hole walls of the lute holes to adjust the position of the axle housing, the first positioning blocks are arranged at equal intervals and synchronously move and abut against the hole walls of the lute holes, so that the center lines of the lute holes and the center lines of the supporting disk are positioned, then, a second driving assembly is started, the second driving assembly drives two second positioning blocks to move towards each other and clamp beam arms of the axle housing, the end parts of the axle housing are generally cylindrical, and the two symmetrically arranged second positioning blocks can be divided into a middle to position the axle housing, therefore, the angle of the axle housing on the supporting seat is positioned, after the first positioning device and the second positioning device determine the center and the angle of the axle housing, a user can place the rear cover on the profiling piece, the profiling piece is a positioning part which is manufactured by simulating the groove shape of the rear cover and can be tightly attached to the groove wall of the rear cover to position the rear cover, as the relative positions of the profiling piece, the supporting surface, the centers of the first positioning blocks and the symmetrical surfaces of the two second positioning blocks are not changed, and the position of the axle housing after being positioned is also determined, therefore, after the rear cover is arranged on the profiling piece, the relative position and the angle between the rear cover and the axle housing are also determined, at the moment, the third driving piece is started to drive the third positioning block to move towards the machine table, as the third positioning block is positioned above the supporting surface, the third positioning block can press the rear cover from top to bottom in the process of moving towards the supporting surface, the circumference of a plurality of third locating pieces along the supporting disk, axle housing or rear cover's circumference supports presses the rear cover promptly, make rear cover and axle housing closely laminate, reduce the clearance between rear cover and the axle housing by a wide margin, follow-up welding rear cover of convenience of customers and axle housing, through setting up first positioner and second positioner, can the automatic positioning axle housing, through setting up the profiling, can accurate location rear cover, first positioner, second positioner and profiling cooperate, can effectively improve the positioning accuracy between axle housing and the rear cover, improve the off-the-shelf yields of axle housing and uniformity, support and press the rear cover through setting up third positioner, can reduce the clearance between axle housing and the rear cover, effectively improve the welding quality of axle housing rear cover.

According to some embodiments of the present invention, two ends of the third positioning block are respectively provided with a pressing portion and a connecting portion, the pressing portion is disposed toward the supporting disc, the connecting portion is hinged to an output end of the third driving member, the third positioning device includes a supporting member and a connecting plate, the supporting member is connected to the machine table, one end of the connecting plate is hinged to the supporting member, the other end of the connecting plate is hinged to a middle section of the third positioning block, and the third driving member is matched with the connecting plate to drive the pressing portion to rotate toward the machine table so as to press the rear cover.

According to some embodiments of the invention, the third positioning device comprises a telescopic sleeve, and the telescopic sleeve is sleeved on the pressing part.

According to some embodiments of the invention, the telescopic sleeve is provided with a mounting hole, the pressing part is provided with an elongated hole arranged along the radial direction of the support disc, and the pressing part is connected with a screw which penetrates through the mounting hole and abuts against the bottom wall of the elongated hole.

According to some embodiments of the invention, the first positioning device is provided with a first sliding seat, the first driving assembly includes a first driving member, a first push-pull rod and a first swing arm, the first push-pull rod and the first sliding seat are slidably connected and located in the center of the first sliding seat, the first push-pull rod slides along a vertical direction, the first swing arm and the first positioning block are provided with a plurality of first swing arms in a one-to-one correspondence manner, the plurality of first swing arms are arranged at intervals along the circumferential direction of the first push-pull rod, the first positioning block and the first sliding seat are slidably matched and slide along the radial direction of the supporting disk, the middle section of the first swing arm is hinged to the first sliding seat, two ends of the first swing arm are respectively hinged to the first push-pull rod and the first positioning block, and the output end of the first driving member is connected to the first push-pull rod to drive the first swing arm to rotate and drive the first positioning block to slide along the radial direction of the supporting disk.

According to some embodiments of the present invention, two ends of the first swing arm are each provided with a protrusion, the bottom end of the first positioning block is provided with a first receiving groove, the top end of the first push-pull rod is provided with a second receiving groove, the protrusion at one end of the first swing arm is received in the first receiving groove, and the protrusion at the other end of the first swing arm is received in the second receiving groove.

According to some embodiments of the invention, the first positioning device comprises a roller, the roller is rotatably connected with the first positioning block and is located on a side of the first positioning block, which is away from the first swing arm, and a rotating shaft of the roller is parallel to the first push-pull rod.

According to some embodiments of the invention, the supporting disc is symmetrically provided with a plurality of positioning portions, the plurality of positioning portions are arranged at intervals along the circumferential direction of the supporting disc, a mounting plate is arranged between the profile-shaped piece and the supporting disc, the profile-shaped piece is connected with the mounting plate, the mounting plate is provided with a plurality of positioning holes, and the positioning portions and the positioning holes are in one-to-one correspondence and penetrate through the positioning holes.

According to some embodiments of the invention, the assembly welding and positioning tool for the axle housing rear cover further comprises a positioning pin, a bolt seat is arranged on one side, away from the supporting seat, of the mounting plate, and the positioning pin penetrates through the rear cover and is in inserted connection and matching with the bolt seat.

According to some embodiments of the invention, the supporting seat comprises an equal-height cushion block and an equal-height cushion plate, the equal-height cushion plate is connected with the machine table, the equal-height cushion block is detachably fixed on one side, away from the machine table, of the equal-height cushion plate, and the supporting surface is arranged at the top end of the equal-height cushion block.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a top view of an axle housing rear cover assembly welding positioning tool according to an embodiment of the invention;

FIG. 2 is a side view of an axle housing rear cover assembly welding positioning tool according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a third positioning apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a pressing portion according to an embodiment of the invention;

FIG. 5 is a schematic diagram of a first positioning device according to an embodiment of the invention;

FIG. 6 is a schematic structural diagram of a second positioning device according to an embodiment of the present invention;

FIG. 7 is a side view of a cam according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a spacing bolt according to an embodiment of the invention;

fig. 9 is an elevation view of a cam according to an embodiment of the invention.

Reference numerals: a machine 100; a slot 101; a support plate 110; a positioning portion 111; a sleeve 112; a limit bolt 113; a support base 120; equal-height cushion blocks 121; contoured pad 122; a support surface 123;

a cam 200; positioning holes 201; a limiting groove 202; a mounting plate 210; a guide sleeve 211; a latch base 212; an elastic member 220; a guide post 230; positioning pins 240;

a first positioning device 300; a first accommodating groove 301; a second receiving groove 302; a third accommodating groove 303; a first positioning block 310; a mounting block 311; an adjustment block 312; a card holder 313; a drive block 314; a first driver 320; a first slider 330; a first push-pull rod 340; a first swing arm 350; the convex portion 351; a roller 360; a first dust cover 370;

a second positioning device 400; a fourth accommodation groove 401; a second locating block 410; a partial medium pressure head 411; a second driver 420; a second slider 430; a second push-pull rod 440; a second swing arm 450; a second dust cover 460;

a third positioning device 500; an elongated hole 501; mounting holes 502; a third positioning block 510; a pressing portion 511; a connecting portion 512; a third driver 520; a support 530; an installation table 531; a connecting plate 540; a telescoping sleeve 550; and a screw 560.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

The embodiments of the present application will be further explained with reference to the drawings.

Referring to fig. 1 to 9 (for convenience of observation, fig. 1 omits a profiling member 200 and a related structure thereof), the axle housing rear cover assembly welding positioning tool according to the embodiment of the invention comprises a machine table 100, a plurality of supporting seats 120, a first positioning device 300, a second positioning device 400 and a plurality of third positioning devices 500, wherein the machine table 100 is provided with a supporting disc 110, the supporting disc 110 is of a disc-shaped structure with an outer diameter smaller than the diameter of an axle housing lute hole, and the profiling member 200 is detachably mounted on the supporting disc 110; a plurality of supporting seats 120 are arranged at intervals along the circumferential direction of the supporting plate 110 and are positioned below the cam 200, a supporting surface 123 for supporting the axle housing is formed on each supporting seat 120, and the supporting surfaces 123 of the plurality of supporting seats 120 are coplanar; the first positioning device 300 is installed below the supporting plate 110, the first positioning device 300 is provided with a plurality of first positioning blocks 310 (considering reasonability and beauty of the overall structure of the first positioning device 300, the number of the first positioning blocks 310 is usually four, hereinafter, the description will be given on the basis of the four first positioning blocks 310, the structure of the plurality of first positioning blocks 310 can be analogized in the same way, and will not be described any more), the four first positioning blocks 310 are equidistantly arranged along the circumferential direction of the supporting plate 110, the first positioning blocks 310 are connected with a first driving assembly, the first driving assembly is installed on the machine table 100, and the first driving assembly is used for driving the four first positioning blocks 310 to synchronously move along the radial direction of the supporting plate 110; the second positioning device 400 is mounted on one side of the supporting plate 110, the second positioning device 400 is relatively provided with two second positioning blocks 410, one side of the two second positioning blocks 410, which is opposite to each other, is provided with a sub-middle press head 411, specifically, the circle centers of the second positioning device 400 and the supporting plate 110, that is, the distance between the centers of the plurality of first positioning blocks 310 is exactly equal to the length of a beam arm on one side of the axle housing (if the beam arms on the two sides of the axle housing are unequal, the distance between the circle centers of the second positioning device 400 and the supporting plate 110 is equal to the length of a shorter beam arm), the second positioning blocks 410 are connected with a second driving assembly, the second driving assembly is mounted on the machine table 100, and the second driving assembly is used for driving the two second positioning blocks 410 to move in opposite directions so that the two sub-middle press heads 411 clamp the axle housing; the third positioning devices 500 are disposed at intervals along the circumferential direction of the supporting plate 110, the third positioning devices 500 are provided with third positioning blocks 510, the third positioning blocks 510 are located above the supporting surface 123 (it should be specifically noted that, when the number of the third positioning devices 500 is the same as that of the supporting seats 120, that is, the number of the third positioning devices 500 is four in this embodiment, the third positioning blocks 510 are disposed above the supporting surfaces 123 of the supporting seats 120 in a one-to-one correspondence manner, when the number of the third positioning devices 500 is different from that of the supporting seats 120, the third positioning devices 500 surround the supporting plates 110, that is, the third positioning devices 500 and the supporting seats 120 are sequentially disposed along the radial direction of the supporting plates 110, and the third positioning blocks 510 are located above the supporting surfaces 123), the third positioning devices 500 are connected with third drivers 520, the third drivers 520 are mounted on the machine table 100, the third drivers 520 are used for driving the third positioning blocks 510 to move towards or away from the supporting surfaces 123, and when the rear cover is mounted on the profile 200, the outer edge of the rear cover is located just on the moving path of the third positioning blocks 510.

It can be understood that, before the user welds the rear cover and the axle housing, the axle housing may be placed on the supporting surface 123 of the supporting seat 120, at this time, the dummy 200 penetrates the lute hole of the axle housing, the first positioning block 310 is located in the lute hole, then, the first driving assembly is activated, the first driving assembly drives the four first positioning blocks 310 to move outward in the radial direction of the supporting seat 110 synchronously, the first positioning block 310 may push the hole wall of the lute hole to adjust the position of the axle housing, because the four first positioning blocks 310 are equidistantly arranged, the four first positioning blocks 310 move synchronously and abut against the hole wall of the lute hole, so that the center line of the lute hole and the center line of the supporting seat 110 are collinear, thereby positioning the center of the axle housing, then, the second driving assembly is activated, the second driving assembly drives the two second positioning blocks 410 to move oppositely and clamp the beam arms of the axle housing, because the end portions of the axle housing are generally cylindrical, the two symmetrically arranged second positioning blocks 410 may be centered and positioned to position the angle of the axle housing 120, when the first positioning device 300 and the second positioning device determine that the rear cover 200 and the second positioning block 400 are located above the supporting seat, the supporting surface of the axle housing, the dummy 200, the rear cover is located on the supporting surface, the supporting seat, the supporting surface, the rear cover 200, the supporting seat 200 is also because the third positioning device 300 and the dummy 200, the rear cover supporting surface is located tightly pressed by the third positioning device, the dummy 200, third locating piece 510 moves the in-process and can top-down support and press the back lid towards holding surface 123, a plurality of third locating pieces 510 are along the circumference of supporting disk 110, axle housing or the circumference of back lid support and press the back lid, make back lid and axle housing closely laminate, reduce the clearance between back lid and the axle housing by a wide margin, subsequent welding back lid and axle housing of convenience of customers, through setting up first positioner 300 and second positioner 400, can the automatic positioning axle housing, through setting up imitative piece 200, can accurate location back lid, first positioner 300, second positioner 400 and imitative piece 200 cooperate, can effectively improve the positioning accuracy between axle housing and the back lid, improve the off-the-shelf yields and the uniformity of axle housing, through setting up third positioner 500 and supporting and pressing the back lid, can reduce the clearance between axle housing and the back lid, effectively improve the welding quality of axle housing back lid.

Further, the supporting seat 120 (the number of the supporting seats 120 is generally equal to that of the first positioning blocks 310, and the supporting seats 120 and the first positioning blocks 310 are alternately arranged to facilitate assembly layout of the positioning tool and improve the aesthetic measure of the positioning tool) includes an equal-height cushion block 121 and an equal-height cushion plate 122, the equal-height cushion plate 122 is connected to the machine table 100, the equal-height cushion block 121 is detachably fixed to one side of the equal-height cushion plate 122, which is away from the machine table 100, a supporting surface 123 is disposed at the top end of the equal-height cushion block 121, and in addition, the equal-height cushion plate 122 has various height dimensions. When the user places the axle housing on high cushion 121 such as height, axle housing terminal surface and the holding surface 123 butt on the axle housing lute empty outer edge, thereby can carry out horizontal location to the axle housing, ensure that the axle housing does not take place the slope, axle housing beam arm's axis is parallel with the horizontal plane promptly, equal high cushion plate 122 through setting up multiple height dimension, the user changes equal high cushion plate 122 of co-altitude not, can adjust the mounting height of axle housing, and then change third positioner 500's support and press the height, make the axle housing rear cover that the location frock can the not co-altitude size of centre gripping, enlarge the application scope of location frock, improve the product competitiveness of location frock.

Referring to fig. 1 to 3, it can be understood that two ends of the third positioning block 510 are respectively provided with a pressing portion 511 and a connecting portion 512, the pressing portion 511 is disposed toward the supporting disc 110, the connecting portion 512 is hinged to an output end of the third driving member 520, the third positioning device 500 includes a supporting member 530 and a connecting plate 540, the supporting member 530 is connected to the machine table 100, one side of the supporting member 530 away from the supporting plate is provided with an installation platform 531, the third driving member 520 is bolted to the installation platform 531, one end of the connecting plate 540 is hinged to a top end of the supporting member 530, the other end is hinged to a middle section of the third positioning block 510, and the third driving member 520 and the connecting plate 540 cooperate to drive the pressing portion 511 to rotate toward the machine table 100 to press the rear cover. By providing the third driving member 520, the third driving member 520 may be a hydraulic cylinder having a simple structure, convenient operation and a large driving force, and further, the third driving member 520 may be a cylinder, an oil cylinder or other commonly used hydraulic cylinders, electric cylinders, etc. (the use of the cylinder, the oil cylinder, etc. are common choices in the field of tooling, and since these cylinder bodies have mature technology, various models and are not the key points of this application, the structure of the third driving member 520 is not specifically described here, as long as the third positioning block 510 can be stably and efficiently driven to move, the driving members such as the first driving member 320, the second driving member 420, etc. described later are also provided as hydraulic cylinders or other commonly used driving cylinders, the functions and effects thereof are similar to those of the third driving member 520, and will not be described later on) to drive the pressing portion 511 to rotate, the upward thrust of the hydraulic cylinders may be completely converted into the downward pressure, so that the pressing portion 511 may vertically press the outer edge of the rear cover from top, the plurality of pressing portions 511 press the rear cover from multiple points of the rear cover, the gap between the axle housing 511 may be further reduced, thereby further improving the quality of the welding axle housing 531, and the rear housing cover may be further connected to the welding process of the rear axle housing 531, and the rear housing, which may be a welding condition that the rear housing.

Further, the third positioning device 500 includes a telescopic sleeve 550, and the pressing portion 511 is sleeved with the telescopic sleeve 550. The telescopic sleeve 550 refers to an elastic protective sleeve with a telescopic function, and by arranging the telescopic sleeve 550, the pressing part 511 rotates towards the rear cover, the telescopic sleeve 550 can be in contact with the surface of the rear cover and gradually shrinks, when the pressing part 511 rotates to a horizontal position, namely, the pressing part 511 vertically presses the outer edge of the rear cover from top to bottom, the telescopic sleeve 550 can exert thrust on the rear cover along the radial direction of the rear cover due to the elasticity of the telescopic sleeve 550, the thrust of the telescopic sleeves 550 jointly acts, on the basis of positioning of the profiling piece 200, the rear cover is centrally positioned, the positioning precision of the rear cover is further improved, and the yield and the consistency of axle housing finished products are further improved.

Referring to fig. 4, it can be understood that the telescopic sleeve 550 is provided with a mounting hole 502, the pressing portion 511 is provided with an elongated hole 501 arranged along the radial direction of the support disc 110, the pressing portion 511 is connected with a screw 560, and the screw 560 is inserted through the mounting hole 502 and abuts against the bottom wall of the elongated hole 501. Because the telescopic sleeve 550 is sleeved on the pressing portion 511, the telescopic sleeve 550 is tightly matched with the pressing portion 511, if a hole groove structure is not arranged on the side surface of the pressing portion 511, the screw 560 penetrating through the mounting hole 502 can be directly abutted against the outer surface of the pressing portion 511, so that the telescopic sleeve 550 cannot be fixed, the pressing portion 511 is easily crushed, and by arranging the elongated hole 501, a user can change the mounting length of the telescopic sleeve 550 on the pressing portion 511 by adjusting the position of the screw 560 in the elongated hole 501, so that the pressing radius of a third positioning part is changed, the positioning tool can position rear covers with different outer diameters, and the application range of the positioning tool is further expanded.

It should be noted that, when the pressing portion 511 presses the rear cover, the telescopic sleeve 550 is usually completely compressed, since the minimum length of the telescopic sleeve 550 is fixed, if the installation length of the telescopic sleeve 550 is also fixed, the pressing radius of the third positioning element is also determined, therefore, the elongated hole 501 is arranged to change the installation length of the telescopic sleeve 550, and further change the pressing radius of the third positioning element, and the telescopic sleeve 550 is arranged to be centered and positioned on the rear cover without conflict, and the two positioning elements cannot be leveled, which is specifically described herein to avoid misunderstanding.

Referring to fig. 5, it can be understood that the first positioning device 300 includes a first sliding base 330, the first driving assembly includes a first driving member 320, a first push-pull rod 340 and a first swing arm 350, the first sliding base 330 is provided with four third receiving slots 303 which are communicated with each other, the first push-pull rod 340 is slidably connected with the first sliding base 330 and is located at the center of the first sliding base 330 (i.e. the communication position of the four third receiving slots 303, at this time, the first push-pull rod 340 is coaxial with the supporting plate 110), the first push-pull rod 340 slides in the vertical direction, the first positioning blocks 310 of the first swing arm 350 are provided with four corresponding first positioning blocks 310, the four first swing arms 350 are respectively received in the four third receiving slots 303, the four first swing arms 350 are arranged along the circumference of the first push-pull rod 340, the first sliding base 330 is further connected with a dust cover 370, the dust cover 370 covers the third receiving groove 303 to prevent foreign matters or processing residues from entering the third receiving groove 303 to damage the first push-pull rod 340, the first swing arm 350 or the first driving member 320, thereby prolonging the service life of the first positioning device 300, the four first positioning blocks 310 and the first sliding base 330 are in sliding fit and slide along the radial direction of the supporting plate 110, the middle section of the first swing arm 350 is hinged to the first sliding base 330, two ends of the first swing arm are respectively hinged to the first push-pull rod 340 and the first positioning block 310, the output end of the first driving member 320 is connected to the first push-pull rod 340 to drive the first push-pull rod 340 along the vertical direction, so as to drive the first swing arm 350 to rotate and drive the first positioning block 310 to slide along the radial direction of the supporting plate 110 (similar to a four-claw-disc structure, except that the claw-disc structure positions an axle housing from the outer side of an pipa hole, the first positioning device 300 positions the axle housing from the inner side of the pipa hole). The first push-pull rod 340 and the first swing arm 350 are arranged to drive the four first positioning blocks 310 to synchronously move, so that the axle housing is accurately positioned, and the linkage of the whole structure of the first positioning device 300 is effectively improved.

Further, the first positioning device 300 includes a roller 360, the roller 360 is rotatably connected to the first positioning block 310 and is located on a side of the first positioning block 310 away from the first swing arm 350, and a rotation axis of the roller 360 is parallel to the first push-pull rod 340. First locating piece 310 is along the radial outside slip of supporting disk 110, first locating piece 310 moves towards the pore wall in lute hole promptly, first locating piece 310 and axle housing butt, the pore wall butt in gyro wheel 360 and lute hole promptly, through setting up gyro wheel 360, make the central rear of first positioner 300 location axle housing, the axle housing still can rotate, thereby make things convenient for the angle of second positioner 400 location axle housing, effectively improve the continuity and the smoothness degree of location frock operation, improve the location efficiency of location frock.

Referring to fig. 5 and 6, it can be understood that the two ends of the first swing arm 350 are both provided with a protrusion 351, the first positioning block 310 is composed of a mounting block 311, an adjusting block 312, a clamping seat 313 and a driving block 314, specifically, the mounting block 311 and the adjusting block 312 are bolted and form a clamping gap (not shown in the figure), the clamping seat 313 is provided with a clamping protrusion (not shown in the figure), the clamping protrusion and the clamping gap are in clamping fit, the bottom end of the mounting block 311 and the top end of the clamping seat 313 are respectively provided with a saw tooth structure which is engaged with each other, so that a user can conveniently adjust the mounting length of the mounting block 311, the clamping seat 313 and the first sliding seat 330 are in sliding fit and slide along the radial direction of the support plate 110, the driving block 314 and the clamping seat 313 are connected, the bottom end of the driving block 314 is provided with a first accommodating groove 301, the roller 360 is rotatably mounted on one side of the mounting block 311 which is far away from the driving block 314, the top end of the first push-pull rod 340 is provided with four second accommodating grooves 302 at equal intervals along the circumference of the first push-pull rod 340, the protrusion 351 at one end of the first swing arm 350 is accommodated in the first accommodating groove 301, and the protrusion 351 at the other end of the second accommodating groove 302 is accommodated in the second accommodating groove. Realize the articulated of swing arm through setting up bulge 351, first holding tank 301 and second holding tank 302, can effectively simplify the structure of location frock, convenience of customers assembles, overhauls first positioner 300, effectively improves user's use experience degree.

It should be noted that the structure of the second positioning device 400 is similar to that of the first positioning device 300, the second positioning device 400 is provided with the second sliding seat 430, the second driving assembly includes the second driving member 420, the second push-pull rod 440, the two second swing arms 450 and the second dust cover 460, the detailed connection relationship between the second driving member 420, the second sliding seat 430, the second push-pull rod 440, the two second swing arms 450, the second dust cover 460 and the two second positioning blocks 410 can refer to the description about the first positioning device 300, and is not repeated herein, it should be specifically noted that, because the second positioning device 400 is provided with only two second positioning blocks 410, the second sliding seat 430 is provided with only two communicated fourth receiving grooves 401, the two second positioning blocks 410 are respectively received in the two fourth receiving grooves 401, and the top end of the second lever 440 is also symmetrically provided with only two structures similar to the second receiving groove 302, therefore, although the structure of the second positioning device 400 is similar to that of the first positioning device 300, the specific structure is slightly different, and it is specifically stated herein that misunderstanding that the push-pull and misunderstanding can be avoided.

Referring to fig. 7 and 8, it can be understood that the supporting plate 110 is symmetrically provided with a plurality of positioning portions 111 (the positioning portions 111 are generally set as pins such as chamfered positioning pins or cylindrical positioning pins fixed on the supporting plate 110), the plurality of positioning portions 111 are arranged at intervals along the circumferential direction of the supporting plate 110, the mounting plate 210 is arranged between the profile 200 and the supporting plate 110, the mounting plate 210 is a plate with a shape matching the projection shape of the horizontal plane of the rear cover to be welded, the profile 200 is connected with the mounting plate 210, specifically, the mounting plate 210 is provided with a guide sleeve 211 and a guide post 230, the guide post 230 is inserted through the guide sleeve 211, the profile 200 is slidably fitted with the guide post 230 and slides in the vertical direction, an elastic member 220 is arranged between the profile 200 and the guide sleeve 211, two ends of the elastic member 220 are respectively abutted against the bottom surface of the profile 200 and the end surface of the guide sleeve 211, the mounting plate 210 is provided with a plurality of positioning holes 201, and the positioning portions 111 and the positioning holes 201 are one-to one. Through setting up location portion 111 and locating hole 201, the user can be as required welded axle housing kind different, the different profiling piece 200 of quick replacement, the high backing plate 122 and the flexible cover 550 of adjustable installation length such as the multiple height dimension of cooperation, make location frock can adapt to various specification and dimension's axle housing and back cover, when further enlarging the application scope of location frock again, convenience of customers fast loading and unloading profiling piece 200, further improve the location efficiency of location frock, through setting up elastic component 220 and guide pillar 230, can make profiling piece 200 reset fast, convenience of customers installs next back cover, further improve the smoothness nature of the operation of location frock.

It needs to be supplemented that, supporting disk 110 is equipped with a plurality of slots 101, a plurality of slots 101 are arranged along supporting disk 110's circumference interval, supporting disk 110 is equipped with sleeve 112, sleeve 112 and slot 101 cooperation of pegging graft, sleeve 112 is connected with stop bolt 113, mounting panel 210 is equipped with a plurality of and slot 101 one-to-one's spacing groove 202, stop bolt 113 and the cooperation of spacing groove 202 joint, through setting up spacing groove 202 and stop bolt 113, after the user inserts location portion 111 into locating hole 201 fixed mounting panel 210, can insert stop bolt 113 from mounting panel 210's side, and then follow vertical direction stop mounting panel 210, effectively improve the installation stability of profile 200, and then improve the job stabilization nature of location frock.

Referring to fig. 7 and 9, it can be understood that the positioning tool further includes a positioning pin 240, one side of the mounting plate 210, which is away from the supporting plate 110, that is, the top end of the mounting plate 210 is provided with a pin seat 212, and the positioning pin 240 penetrates through the rear cover and is in insertion fit with the pin seat 212. Generally speaking, axle housing rear cover is equipped with the fabrication hole usually (not shown in the figure), the user can carry out operations such as oiling oil extraction through the fabrication hole, through setting up locating pin 240 and bolt seat 212, can utilize the fabrication hole to further fix a position the rear cover, it is specific, the user places the profile modeling piece 200 back with the rear cover, can wear to locate the fabrication hole and peg graft the cooperation with bolt seat 212 with locating pin 240, thereby before the rear cover is fixed a position at third positioner 500, it is spacing to carry out circumference to the rear cover, avoid the rear cover to rotate, further improve the positioning accuracy of rear cover and the positioning efficiency of location frock.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. The utility model provides an axle housing rear cover assembly welding positioning tool which characterized in that includes:

the machine table is provided with a supporting disc, and the supporting disc is provided with a profiling piece matched with the shape of the rear cover;

the supporting seats are arranged at intervals along the circumferential direction of the supporting disk and are positioned below the profiling piece, and a supporting surface for supporting the axle housing is formed on each supporting seat;

the first positioning device is arranged below the supporting disc and comprises a plurality of first positioning blocks which are arranged at equal intervals along the circumferential direction of the supporting disc, the first positioning blocks are connected with a first driving assembly, the first driving assembly is arranged on the machine table, and the first driving assembly is used for driving the first positioning blocks to synchronously move along the radial direction of the supporting disc;

the second positioning device is arranged on one side of the supporting disc and comprises two second positioning blocks and a second driving assembly which are arranged oppositely, the second driving assembly is arranged on the machine table and is used for driving the two second positioning blocks to move oppositely so as to clamp the axle housing;

a plurality of third positioner, follow the circumference interval of supporting disk sets up, third positioner includes the third locating piece, the third locating piece is located the holding surface top, third positioner is connected with the third driving piece, the third driving piece install in the board, the third driving piece is used for driving the orientation of third locating piece or deviate from the holding surface removes.

2. The assembly welding and positioning tool for the axle housing rear cover according to claim 1, wherein two ends of the third positioning block are respectively provided with a pressing portion and a connecting portion, the pressing portions are arranged towards the supporting disc, the connecting portion is hinged to an output end of the third driving piece, the third positioning device comprises a supporting piece and a connecting plate, the supporting piece is connected with the machine table, one end of the connecting plate is hinged to the supporting piece, the other end of the connecting plate is hinged to a middle section of the third positioning block, and the third driving piece is matched with the connecting plate to drive the pressing portions to rotate towards the machine table to press the rear cover.

3. The assembly welding and positioning tool for the axle housing rear cover as claimed in claim 2, wherein the third positioning device comprises a telescopic sleeve, and the telescopic sleeve is sleeved on the pressing portion.

4. The assembly welding and positioning tool for the axle housing rear cover as claimed in claim 3, wherein the telescopic sleeve is provided with a mounting hole, the pressing portion is provided with an elongated hole arranged along the radial direction of the support disc, the pressing portion is connected with a screw, and the screw penetrates through the mounting hole and abuts against the bottom wall of the elongated hole.

5. The assembly welding and positioning tool for the rear axle housing cover according to claim 1, wherein the first positioning device comprises a first sliding seat, the first driving assembly comprises a first driving member, a first push-pull rod and a first swing arm, the first push-pull rod and the first sliding seat are slidably connected and located in the center of the first sliding seat, the first push-pull rod slides in the vertical direction, the first swing arm and the first positioning block are provided in a one-to-one correspondence manner, the first swing arms are arranged at intervals along the circumferential direction of the first push-pull rod, the first positioning block and the first sliding seat are slidably matched and slide in the radial direction of the supporting plate, the middle section of the first swing arm is hinged to the first sliding seat, two ends of the first swing arm are hinged to the first push-pull rod and the first positioning block respectively, and the output end of the first driving member is connected to the first push-pull rod to drive the first push-pull rod to slide in the vertical direction, so as to drive the first positioning block to slide in the radial direction of the supporting plate.

6. The assembly welding and positioning tool for the axle housing rear cover as claimed in claim 5, wherein two ends of the first swing arm are respectively provided with a protruding portion, the bottom end of the first positioning block is provided with a first accommodating groove, the top end of the first push-pull rod is provided with a second accommodating groove, the protruding portion at one end of the first swing arm is accommodated in the first accommodating groove, and the protruding portion at the other end of the first swing arm is accommodated in the second accommodating groove.

7. The assembly welding and positioning tool for the axle housing rear cover as claimed in claim 6, wherein the first positioning device comprises a roller, the roller is rotatably connected with the first positioning block and is located on one side of the first positioning block, which is far away from the first swing arm, and a rotating shaft of the roller is parallel to the first push-pull rod.

8. The assembly welding and positioning tool for the axle housing rear cover according to claim 1, wherein a plurality of positioning portions are symmetrically arranged on the supporting disc and are circumferentially arranged at intervals along the supporting disc, an installation plate is arranged between the profiling piece and the supporting disc, the profiling piece is connected with the installation plate, the installation plate is provided with a plurality of positioning holes, and the positioning portions and the positioning holes correspond to one another and penetrate through the positioning holes.

9. The assembly welding and positioning tool for the axle housing rear cover according to claim 8, further comprising a positioning pin, wherein a pin seat is arranged on one side of the mounting plate, which is away from the support seat, and the positioning pin penetrates through the rear cover and is in insertion fit with the pin seat.

10. The assembling, welding and positioning tool for the axle housing rear cover according to claim 1, is characterized in that the supporting seat comprises an equal-height cushion block and an equal-height cushion plate, the equal-height cushion plate is connected with the machine table, the equal-height cushion block is detachably fixed to one side, away from the machine table, of the equal-height cushion plate, and the supporting surface is arranged at the top end of the equal-height cushion block.