CN211680678U - Welding tool for improving welding qualification rate of chain wheels - Google Patents
Welding tool for improving welding qualification rate of chain wheels Download PDFInfo
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- CN211680678U CN211680678U CN201922436152.7U CN201922436152U CN211680678U CN 211680678 U CN211680678 U CN 211680678U CN 201922436152 U CN201922436152 U CN 201922436152U CN 211680678 U CN211680678 U CN 211680678U
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Abstract
The utility model relates to an improve welding frock of sprocket welding qualification rate, including location base, splash guard and locking clamp plate, redesign welding frock utilizes splash guard and locking clamp plate to press tightly 90% of part in chain piece both ends face, only leaves 10% local bare, leaves sufficient welding space, and wheel hub adopts the terminal surface to compress tightly, then automatic girth welding, waits to pull down after cooling, accomplishes the welding, makes welding process stable, and the end that can the effective control chain piece jumps and the variation, improves welding process's qualification rate.
Description
Technical Field
The utility model relates to a production and processing field of sprocket especially relates to an improve welding frock of sprocket welding qualification rate.
Background
The sprocket is a wheel with cogged sprocket teeth for meshing with precisely pitched blocks on a chain link or cable. The chain wheel is widely applied to mechanical transmission and the like in the industries of chemical engineering, textile machinery, escalators, wood processing, three-dimensional parking garages, agricultural machinery, food processing, instruments, petroleum and the like. In daily production, the one-time delivery yield of the chain wheel product cannot meet the production requirement, and the main reasons are unqualified welding procedures and unqualified fine boring procedures through analysis, wherein the unqualified welding procedures are the most important reasons.
Aiming at the reason of low percent of pass of the welding procedure, analysis is carried out according to the variety of the welded chain wheel, and the main disqualification is 47586463 double-row chain wheel. 47586463 double sprocket failure reason: the chain piece end runout is out of tolerance, double-row chain wheels are adopted, the structure is complex, the thicknesses of two types of chain pieces are thin, the chain pieces are easy to deform during welding, deformation is not regular, the deformation quantities of parts with different diameters and thicknesses are inconsistent, and the chain piece end runout is unqualified. For further analysis, there are two main reasons: 1. the tool used during welding has an unreasonable structure, so that the tool cannot control the deformation of the chain sheet, and the welding is unqualified; 2. the chain piece has small reverse deformation taper, namely the chain piece has small reverse deformation size, so that the welded chain piece has large variation. Therefore, a welding tool capable of controlling deformation of the chain sheet is needed, and the welding yield is further improved through improving the process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that among the prior art double sprocket welding deformation qualification rate is low, and the welding frock of an improvement sprocket welding qualification rate that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a welding tool for improving the welding qualification rate of chain wheels is applied to a double-row chain wheel, and the double-row chain wheel comprises a large chain sheet, a hub and a small chain sheet; the welding tool comprises a positioning base, a splash guard and a locking pressing plate; the positioning base comprises a chassis and a positioning rod vertically fixed in the center of the chassis, external threads are arranged on the side face of the chassis, a hub of the double-row chain wheel is sleeved on the positioning rod, the large chain piece is tightly attached to the chassis, the small chain piece is located above the large chain piece, the splash guard is sleeved on the periphery of the hub and tightly attached to the top of the large chain piece, the locking pressing plate comprises a top surface pressing plate and a locking side wall, a welding hole is formed in the top surface pressing plate, the periphery of the top surface pressing plate vertically extends downwards to form the locking side wall, internal threads matched with the external threads are arranged on the inner side of the locking side wall, the locking pressing plate is sleeved on the splash guard, and the locking side wall and the side wall of the positioning base are locked through threads.
Preferably, the welding tool further comprises a locking wrench, the locking wrench comprises a worm and two worm wheels located at the end of the worm, a plurality of locking holes evenly distributed on the periphery of the welding hole are further formed in the top surface pressure plate, the locking holes are identical to the worm wheels in shape, and the two worm wheels are correspondingly clamped in the two locking holes.
Preferably, the locking hole is a dug circular hole, and the locking hole intersects with the welding hole.
Preferably, the splash plate is an annular plate, the diameter of an inner ring of the splash plate is equal to that of the welding hole, and an outer ring of the splash plate is located outside the locking hole.
Preferably, the diameter of the welding hole is larger than that of the hub, the projected areas of the splash guard and the locking pressure plate on the large chain sheet occupy 90% of the area of the end face of the large chain sheet, and the exposed area of the large chain sheet occupies 10% of the area of the end face of the large chain sheet.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses in being directed at welding process at present again, press the chain piece and wheel hub and press and install on the location frock after joining in marriage, direct welding behind the locking wheel hub up end, because of be spin welding, the welding position is not heated simultaneously, the chain up end does not compress tightly, lean on anti-deformation tapering can not effective control in the tolerance range, make the variation of chain piece surpass the shortcoming of scope, redesign welding frock, utilize splash shield and locking clamp plate to press 90% of part of chain piece both ends face whole tightly, only leave 10% local uncovering, leave enough weld space, wheel hub adopts the terminal surface to compress tightly, then automatic girth welding, cool down after waiting, accomplish the welding, make welding process stable, can effective control the end and the variation of chain piece, improve welding process's qualification rate.
Drawings
FIG. 1 is a schematic structural diagram of a welding tool for improving the welding yield of a sprocket;
FIG. 2 is a schematic structural view of a positioning base;
FIG. 3 is a schematic view of the splash plate;
FIG. 4 is a schematic structural view of the locking pressure plate;
FIG. 5 is a schematic structural view of the locking wrench;
FIG. 6 is a schematic view of a double row sprocket.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 6, the present invention provides a welding tool for improving the welding pass percent of a sprocket, wherein the welding tool is applied to a double-row sprocket 5, as shown in fig. 6, the double-row sprocket 5 comprises a large chain piece 51, a hub 52 and a small chain piece 53; as shown in fig. 1-4, the welding tool comprises a positioning base 1, a splash guard 2 and a locking pressing plate 3; the positioning base 1 comprises a base plate 11 and a positioning rod 12 vertically fixed at the center of the base plate 11, the side surface of the base plate 11 is provided with an external thread 13, a hub 52 of the double-row chain wheel 5 is sleeved on the positioning rod 12, a large chain piece 51 is tightly attached to the base plate 11, a small chain piece 53 is positioned above the large chain piece 51, the splash guard 2 is sleeved on the periphery of the hub 52 and tightly attached to the top of the large chain piece 51, the locking pressing plate 3 comprises a top surface pressing plate 31 and a locking side wall 32, a welding hole 33 is formed in the top surface pressing plate 31, the periphery of the top surface pressing plate 31 vertically extends downwards to form a locking side wall 32, the inner side of the locking side wall 32 is provided with an internal thread 34 matched with the external thread 13, the locking pressing plate 3 is sleeved.
The double-row chain wheel 5, the splash guard 2 and the locking pressure plate 3 are symmetrically arranged on the positioning base 1 around the center of the fixed rod 12, the traditional welding process is that the large chain piece 51 and the hub 52 are arranged on the positioning tool after being pressed and assembled, the upper end face of the hub 52 is directly welded, because of the rotary welding, the welding position is not heated simultaneously, the upper end face of the large chain piece 51 is not compressed, and can not be effectively controlled within the tolerance range by the anti-deformation taper, the welding tool of the utility model is also provided with the splash guard 2 above the large chain piece 51, and is finally sleeved with the locking pressure plate 3, the locking pressure plate 3 is pressed above the splash guard 2, the locking pressure plate 3 and the splash guard 2 together cover the end face of the large chain piece 51 for 90% of area, and 10% of the end face area of the circular chain wheel exposed in the welding hole 33 in the middle of the locking pressure plate 3 is left, and the circular seam welding is carried out by a welding gun, so as to solve that, the upper end surface of the chain sheet is not pressed, and the end jump and the variation of the chain sheet exceed the qualified requirements.
Preferably, as shown in fig. 5, the welding tool further includes a locking wrench 4, the locking wrench 4 includes a worm 41 and two worm wheels 42 located at ends of the worm 41, the top platen 31 is further provided with a plurality of locking holes 35 uniformly distributed on the periphery of the welding hole 33, the locking holes 35 and the worm wheels 42 have the same shape, and the two worm wheels 42 are correspondingly clamped in the two locking holes 35. Because the locking pressing plate 3 is detachably connected with the positioning base 1 through the external thread 13 and the internal thread 34, and because the positioning base 1 is heavy in weight and is not easy to rotate and lock, the worm wheel 42 of the locking wrench 4 is clamped in the locking hole 35, and the worm 41 is rotated to drive the locking pressing plate 2 to rotate and lock.
Preferably, as shown in fig. 4, the locking hole 35 is a circular hole dug out, and the locking hole 35 intersects with the welding hole 33, so that the splash guard 2 is conveniently padded between the locking hole 35 and the large chain piece 51 to prevent sparks generated during welding from splashing onto the large chain piece 51. The central angle of the locking hole 35 is larger than 270 degrees, so that the worm wheel 42 is prevented from sliding out of the locking hole 35 when rotating, and the locking effect is prevented from being influenced.
Preferably, as shown in fig. 3, the splash shield 2 is an annular plate, the diameter of the inner ring of the splash shield 2 is equal to the diameter of the welding hole 33, and the outer ring of the splash shield 2 is located outside the locking hole 35, so that the splash shield 2 completely blocks the end surface of the large chain piece 51 below the locking hole 35 to prevent sparks during welding from splashing onto the large chain piece 51.
Preferably, as shown in fig. 1, the diameter of the welding hole 33 is larger than that of the hub 52, the projected area of the splash shield 2 and the locking pressure plate 3 on the large chain piece 51 occupies 90% of the end surface area of the large chain piece 51, and the exposed area of the large chain piece 51 occupies 10% of the end surface area of the large chain piece 51.
The utility model discloses a welding frock is to in welding process at present again, press the back with chain piece and wheel hub and install on the location frock, direct welding behind the locking wheel hub up end, because of be spin welding, the welding position is not heated simultaneously, the chain up end does not compress tightly, lean on anti-deformation tapering can not effective control in the tolerance range, make the variation of chain piece surpass the shortcoming of scope, redesign welding frock, utilize splash shield and locking clamp plate to press 90% part of chain piece both ends face whole tightly, only leave 10% local uncovering, leave enough welding space, wheel hub adopts the terminal surface to compress tightly, then automatic girth welding, wait to cool down the back and pull down, accomplish the welding, make welding process stable, the end jump and the variation that can effective control chain piece, improve welding process's qualification rate.
Redesigning and manufacturing a pressing plate type welding tool, tracking the verification effect of the trial-manufacturing process on the sample (see table 1), finding that the end jump of the chain sheet meets the requirement, the variation is 0.14-0.28mm, and the welding result is qualified.
TABLE 1 chain sheet finish turning back taper post weld test results
From top to the utility model discloses redesign welding frock utilizes splash shield and locking clamp plate to compress tightly 90% part of chain piece both ends face, only leaves 10% local naked, leaves sufficient welding space, and wheel hub adopts the terminal surface to compress tightly, then automatic girth welding, waits to pull down after cooling, accomplishes the welding, makes welding process stable, and the end that can the effective control chain piece jumps and becomes poor, improves welding process's qualification rate.
The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.
Claims (5)
1. A welding tool for improving the welding qualification rate of chain wheels is applied to a double-row chain wheel, and the double-row chain wheel comprises a large chain sheet, a hub and a small chain sheet; the method is characterized in that: comprises a positioning base, a splash guard and a locking pressing plate; the positioning base comprises a chassis and a positioning rod vertically fixed in the center of the chassis, external threads are arranged on the side face of the chassis, a hub of the double-row chain wheel is sleeved on the positioning rod, the large chain piece is tightly attached to the chassis, the small chain piece is located above the large chain piece, the splash guard is sleeved on the periphery of the hub and tightly attached to the top of the large chain piece, the locking pressing plate comprises a top surface pressing plate and a locking side wall, a welding hole is formed in the top surface pressing plate, the periphery of the top surface pressing plate vertically extends downwards to form the locking side wall, internal threads matched with the external threads are arranged on the inner side of the locking side wall, the locking pressing plate is sleeved on the splash guard, and the locking side wall and the side wall of the positioning base are locked through threads.
2. The welding tool for improving the welding qualification rate of the chain wheel according to claim 1, is characterized in that: the welding tool further comprises a locking wrench, the locking wrench comprises a worm and two worm wheels located at the end portions of the worm, a plurality of locking holes which are evenly distributed on the periphery of the welding holes are further formed in the top surface pressure plate, the locking holes are identical to the worm wheels in shape, and the two worm wheels are correspondingly clamped in the two locking holes.
3. The welding tool for improving the welding qualification rate of the chain wheel according to claim 2, is characterized in that: the locking hole is a dug circular hole, and the locking hole is intersected with the welding hole.
4. The welding tool for improving the welding qualification rate of the chain wheel according to claim 3, is characterized in that: the splash guard is an annular plate, the diameter of an inner ring of the splash guard is equal to that of the welding hole, and an outer ring of the splash guard is located on the outer side of the locking hole.
5. The welding tool for improving the welding qualification rate of the chain wheel according to claim 4, is characterized in that: the diameter of the welding hole is larger than that of the hub, the projected areas of the splash guard and the locking pressure plate on the large chain sheet occupy 90% of the area of the end face of the large chain sheet, and the exposed area of the large chain sheet occupies 10% of the area of the end face of the large chain sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436152.7U CN211680678U (en) | 2019-12-30 | 2019-12-30 | Welding tool for improving welding qualification rate of chain wheels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922436152.7U CN211680678U (en) | 2019-12-30 | 2019-12-30 | Welding tool for improving welding qualification rate of chain wheels |
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| CN211680678U true CN211680678U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069832A (en) * | 2019-12-30 | 2020-04-28 | 兴化东华齿轮有限公司 | Welding tool for improving welding qualification rate of chain wheel and welding process using welding tool |
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2019
- 2019-12-30 CN CN201922436152.7U patent/CN211680678U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069832A (en) * | 2019-12-30 | 2020-04-28 | 兴化东华齿轮有限公司 | Welding tool for improving welding qualification rate of chain wheel and welding process using welding tool |
| CN111069832B (en) * | 2019-12-30 | 2024-09-17 | 东华链条兴化有限公司 | Welding process for improving welding qualification rate of chain wheel |
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Effective date of registration: 20201229 Address after: No. 10, Chengnan West Road, Xinghua City, Taizhou, Jiangsu Patentee after: DONGHUA CHAIN XINGHUA Co.,Ltd. Address before: No.26 Wuli West Road, Xinghua City, Taizhou City, Jiangsu Province Patentee before: XINGHUA DONGHUA GEAR Co.,Ltd. |