CN109676551B - Positioning device and assembly fixture for balance shaft and gear - Google Patents
Positioning device and assembly fixture for balance shaft and gear Download PDFInfo
- Publication number
- CN109676551B CN109676551B CN201910067060.8A CN201910067060A CN109676551B CN 109676551 B CN109676551 B CN 109676551B CN 201910067060 A CN201910067060 A CN 201910067060A CN 109676551 B CN109676551 B CN 109676551B
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- Prior art keywords
- gear
- balance shaft
- groove
- recess
- base
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- 230000007704 transition Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to the technical field of balance shaft and gear assembly, in particular to a positioning device and an assembly fixture for a balance shaft and a gear, which comprises a base, wherein a first groove is formed in the base, at least two positioning keys are fixedly arranged on the first groove in the circumferential direction, the support is fixedly arranged on the base through a connecting block, a concave cylindrical surface is arranged on one side of the support, blades matched with a balance block on the balance shaft are fixedly arranged at the radial two ends of the cylindrical surface respectively, the axis of the cylindrical surface coincides with the axis of the gear after the gear is assembled in the first groove, the axis of the balance shaft is matched with the cylindrical surface of the support after the gear is placed in the first groove and positioned through the pointed parts of the positioning keys, and the balance block is matched with the blades, so that the positioning of the balance shaft and the gear is rapidly performed, the efficiency of the gear and the balance shaft assembly is improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of balance shaft and gear assembly, in particular to a positioning device and an assembly fixture for a balance shaft and a gear.
Background
In the working cycle of the engine, the movement speed of the piston is very high and is very uneven, and because the piston makes repeated high-speed linear movement in the cylinder, a great inertia force is necessarily generated on the piston, the piston pin and the connecting rod, but only one part of movement mass on the connecting rod participates in the linear movement, the other part participates in the rotation, and besides the top dead center position and the bottom dead center position, various inertia forces cannot be completely balanced, so that the engine vibrates. The higher the vibration frequency, the smaller the amplitude.
The common method used on motorcycles is to add a balance shaft to solve the problem. The balance shaft is simply a shaft provided with an eccentric weight and synchronously rotating along with the crankshaft, and the engine is well balanced by utilizing the reverse vibration force generated by the eccentric weight, so that the vibration of the engine is reduced. At present, in the assembly process of the balance shaft and the gear, workers manually align the balance shaft and the gear, because the balance weights on the gear and the balance shaft have relative position relation, the workers position the gear and the balance shaft according to own vision when assembling the gear and the balance shaft, and the assembly of the gear and the balance shaft is realized through the assembly of the gear and the balance shaft by the palm, but the condition that the assembly deviation of the gear and the balance shaft is large usually occurs in the visual positioning, and the assembly deviation of the balance weights and the gear is usually generated by the manual palm, so that the assembled finished product yield is lower, the manual installation efficiency is lower, the labor force is wasted and the cost is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a positioning device and an assembling clamp for a balance shaft and a gear, so that the situation that the positioning is poor when the balance shaft and the gear are assembled manually is reduced, the balance shaft and the gear are positioned quickly, and finally the balance shaft and the gear are assembled quickly.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a positioner of balance shaft and gear, includes the base, be provided with first recess on the base, fixed two at least locating keys that set up in the first recess circumference, locating key one end with first recess is fixed, the locating key other end is the cusp setting and is in the first recess, still include the support, the support passes through the connecting block to be fixed to be set up the base top, be provided with V-arrangement opening on the support, V-arrangement opening point portion is provided with the cylinder groove, the axis of cylinder groove with the axis coincidence of the gear behind the first recess assembly gear still includes the second recess, the second recess sets up first recess middle part.
As a preferable scheme of the invention, the convex ring is arranged on the circumference of the second groove, the height of the convex ring is 1/3-1/2 of the height of the first groove, when the gear is assembled into the first groove, the convex ring is far away from the plane of the second groove to contact with the gear, and the two positioning keys and the convex ring are used for positioning the plane of the gear, so that the subsequent balance shaft can be more conveniently and rapidly installed on the gear.
As a preferable scheme of the invention, the positioning keys are arranged around the circumferential average angle of the first groove, so that the positioning effect of the positioning keys on the gear is improved.
As a preferable scheme of the invention, the included angle of the V-shaped opening is 130-170 degrees, and the V-shaped opening is used for well matching with a balance weight on a balance shaft.
As the preferable scheme of the invention, the first groove is arranged on the base through the transition disc, the transition disc is fixedly connected with the base, and the overall height of the first groove and the bracket is improved in a mode of adding the transition disc on the base, so that the bending angle of a worker when placing the gear and the balance shaft can be reduced to a certain extent.
As the preferable scheme of the invention, the connection part of the cylindrical groove and the V-shaped opening is in smooth transition, so that the installation of the shaft of the balance shaft and the cylindrical groove is more convenient and quicker.
The utility model provides an equipment anchor clamps of balance shaft and gear, includes main body frame and foretell balance shaft and positioner of gear, main body frame includes stand, upper cover plate, bottom plate and foot rest, fixedly on the upper cover plate be provided with actuating mechanism, actuating mechanism is connected with the moving part, actuating mechanism drives the moving part is along upper cover plate to the round trip movement of bottom plate direction, through this kind of mode, separate positioner and equipment anchor clamps, after balance shaft and gear location are accomplished, place whole positioner on the bottom plate, moving part one end is connected with actuating mechanism, the moving part other end and balance shaft one end contact, make balance shaft push down through actuating mechanism, make balance shaft and gear assembly accomplish, positioner and equipment anchor clamps separate the location that makes balance shaft and gear more convenient and fast.
As a preferable scheme of the invention, the driving mechanism is an oil cylinder or an air cylinder, the moving part is of a cylindrical structure, and the moving part is fixedly connected with a piston rod of the oil cylinder or the air cylinder.
In summary, the technical scheme is adopted, so that the invention has the beneficial effects that:
1. because the position relation between the support and the first groove is fixed in the technical scheme, the gear is provided with the small hole for determining the position, the gear is placed into the first groove according to the position of the small hole, after the pointed part of the positioning key is positioned circumferentially, one end of the shaft neck of the balance shaft is placed into the inner ring of the gear, the shaft of the balance shaft is matched with the cylindrical groove of the support for positioning the balance shaft axially, the balance weight on the balance shaft is matched with the V-shaped opening for guiding the balance shaft, the gear and the balance shaft are positioned rapidly, the assembly efficiency of the balance shaft is improved, and the cost is reduced.
2. After the gear and the balance shaft are positioned, the positioning device is placed on the bottom plate, the driving mechanism drives the moving part to move, the moving part pushes the shaft neck on the balance shaft to axially move along the second groove, and the balance shaft smoothly enters the inner ring of the gear, so that the rapid assembly of the gear and the balance shaft is realized, the efficiency is improved, and the cost is reduced.
Drawings
FIG. 1 is a schematic view of a positioning device in the present application;
FIG. 2 is a perspective view of the direction A of FIG. 1;
FIG. 3 is a perspective view of the direction B of FIG. 1;
FIG. 4 is a schematic view of the structure of the main body frame of the assembly jig of the present application;
FIG. 5 is a schematic structural view of a balance shaft;
the marks in the figure: the device comprises a 1-base, a 2-first groove, a 3-positioning key, a 4-bracket, a 5-connecting block, a 6-V-shaped opening, a 7-second groove, an 8-convex ring, a 9-transition disc, a 10-main body frame, an 11-balance shaft, a 111-balance block, a 112-journal, a 113-balance shaft connecting section, a 101-upright post, a 102-upper cover plate, a 103-bottom plate, a 104-foot rest, an 11-driving mechanism, a 12-moving part and a 61-cylindrical groove.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1 to 3, a positioning device for a balance shaft and a gear comprises a base 1, wherein a first groove 2 is formed in the base 1, at least two positioning keys 3 are fixedly arranged on the circumference of the first groove 2, one end of each positioning key 3 is fixed with the first groove 2, the other end of each positioning key 3 is arranged in the corresponding first groove 2 in a pointed mode, the positioning device further comprises a support 4, the support 4 is fixedly arranged above the base 1 through a connecting block 5, a V-shaped opening 6 is formed in one side of the support 4, a cylindrical groove 61 is formed in the tip of the V-shaped opening 6, the axis of the cylindrical groove 61 coincides with the axis of the gear formed by assembling the gear in the first groove 2, and the positioning device further comprises a second groove 7, and the second groove 7 is formed in the middle of the first groove 2.
As shown in fig. 1 and 2, in this embodiment, a convex ring 8 is further disposed in the middle of the first groove 2, the height of the convex ring 8 is 1/3-1/2 of the height of the first groove 2, when the gear is assembled into the first groove 2, the convex ring 8 is far away from the plane of the second groove 7 and contacts with the gear, and two positioning keys 3 and the convex ring 8 perform plane positioning of the gear, so that the subsequent balance shaft 11 can be mounted on the gear more conveniently and rapidly.
As shown in fig. 1 and 2, in this embodiment, the positioning key 3 is disposed around the circumferential average angle of the first groove 2, so as to increase the positioning effect of the positioning key 3 on the gear.
As shown in fig. 2, the included angle α of the V-shaped opening 6 is 130 ° to 170 °, so as to well match the balance weight 111 on the balance shaft 11.
As shown in fig. 1 to 3, in this embodiment, the first groove 2 is disposed on the base 1 through the transition disc 9, the transition disc 9 is fixedly connected with the base 1, and by adding the transition disc 9 on the base 1, the manufacture of the first groove 2 is facilitated, and the overall height of the first groove 2 and the support 4 is improved to a certain extent, so that the bending angle of a worker when placing the gear and the balance shaft 11 can be reduced to a certain extent.
As shown in fig. 4, the application also discloses an assembly fixture for a balance shaft and a gear, which comprises a main body frame 10 and the positioning device for the balance shaft 11 and the gear, wherein the main body frame comprises a stand 101, an upper cover plate 102, a bottom plate 103 and a foot rest 104, a driving mechanism 11 is fixedly arranged on the upper cover plate 102, the driving mechanism 11 is connected with a moving member 12, and the driving mechanism 11 drives the moving member 12 to move back and forth along the direction from the upper cover plate 102 to the bottom plate 103.
As shown in fig. 4, the driving mechanism 11 is an oil cylinder or an air cylinder, the moving member 12 is in a cylindrical structure, and the moving member 12 is fixedly connected with a piston rod of the oil cylinder or the air cylinder.
As shown in fig. 5, the journal 112 of the balance shaft 11 is placed in the inner ring of the gear, the second groove 7 guides the journal 112, the balance weight 111 is matched with the V-shaped opening 6, and the balance shaft connecting section 113 is used for interference fit connection with the inner ring of the gear.
The specific working process of the invention comprises the following steps: firstly, a gear is placed in a first groove 2, after axial positioning is carried out through a pointed part of a positioning key 3, one end of a shaft neck 112 of a balance shaft 11 is placed in an inner ring of the gear, the balance shaft 11 is matched with a cylindrical groove 61 of a bracket 4 to carry out axial positioning of the balance shaft 11, a balance block 111 on the balance shaft 11 is matched with a V-shaped opening 6 to guide the balance shaft 11, positioning work of a front-stage gear and the balance shaft 11 is finished, the positioned gear, the balance shaft 11 and a positioning device are placed on a bottom plate 103 of an assembly fixture, a moving part 12 is driven by a driving mechanism 11 on an upper cover plate 102, the moving part is contacted with the shaft neck 112 of the balance shaft 11, the shaft neck 112 of the balance shaft 11 at the gear assembly end axially moves along a second groove 7 to provide a stroke for downward movement of the balance shaft 11, and the balance shaft 11 applies pressure to enable a balance shaft connecting section 113 to enter an inner hole of the gear to complete assembly.
Claims (5)
1. The utility model provides a balance shaft and positioner of gear, its characterized in that includes base (1), be provided with first recess (2) on base (1), first recess (2) circumference is upwards fixed to be set up two at least locating keys (3), locating key (3) one end with first recess (2) are fixed, locating key (3) other end is sharp setting in first recess (2), still include support (4), support (4) are fixed to be set up through connecting block (5) base (1) top, be provided with V-arrangement opening (6) on support (4) one side, V-arrangement opening (6) tip is provided with cylinder groove (61), the axis of cylinder groove (61) with the axis coincidence of gear after first recess (2) assembly gear, still include second recess (7), second recess (7) set up in the middle part of first recess (2); a convex ring (8) is arranged on the circumference of the second groove (7), and the height of the convex ring (8) is 1/3-1/2 of the height of the first groove (2); the positioning keys (3) are arranged around the circumferential average angle of the first groove (2).
2. The balance shaft and gear positioning device according to claim 1, characterized in that the angle of the V-shaped opening (6) is 130 ° to 170 °.
3. The balance shaft and gear positioning device according to claim 1, wherein the first groove (2) is arranged on the base (1) through a transition disc (9), and the transition disc (9) is fixedly connected with the base (1).
4. The utility model provides an equipment anchor clamps of balance shaft and gear, its characterized in that includes main body frame and any one of claims 1 ~ 3 balance shaft and positioner of gear, main body frame (10) include stand (101), upper cover plate (102), bottom plate (103) and foot rest (104), fixedly on upper cover plate (102) be provided with actuating mechanism (11), actuating mechanism (11) are connected with moving member (12), actuating mechanism (11) drive moving member (12) are along upper cover plate (102) to bottom plate (103) direction round trip movement.
5. The assembly fixture for the balance shaft and the gear according to claim 4, wherein the driving mechanism (11) is an oil cylinder or an air cylinder, the moving member (12) is of a cylindrical structure, and the moving member (12) is fixedly connected with a piston rod of the oil cylinder or the air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067060.8A CN109676551B (en) | 2019-01-24 | 2019-01-24 | Positioning device and assembly fixture for balance shaft and gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067060.8A CN109676551B (en) | 2019-01-24 | 2019-01-24 | Positioning device and assembly fixture for balance shaft and gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109676551A CN109676551A (en) | 2019-04-26 |
| CN109676551B true CN109676551B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067060.8A Active CN109676551B (en) | 2019-01-24 | 2019-01-24 | Positioning device and assembly fixture for balance shaft and gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109676551B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037491A (en) * | 2020-01-10 | 2020-04-21 | 重庆望江工业有限公司 | Positioning device for interference assembly of shell and inner barrel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04249640A (en) * | 1990-12-28 | 1992-09-04 | Toyota Motor Corp | Installation structure for balance shaft |
| CN101777689A (en) * | 2009-01-08 | 2010-07-14 | 世达普(苏州)通信设备有限公司 | Assembling device of microwave isolator |
| CN202264057U (en) * | 2011-10-12 | 2012-06-06 | 大连创新齿轮箱制造有限公司 | Assembling fixture for balance shaft and gear |
| CN203189607U (en) * | 2013-03-22 | 2013-09-11 | 远勤山 | Trunnion shaft gear assembly of engine |
| CN103659390A (en) * | 2013-11-29 | 2014-03-26 | 无锡市航鹄科技有限公司 | Lathe positioning fixture |
| CN103658518A (en) * | 2013-10-09 | 2014-03-26 | 贵州安吉航空精密铸造有限责任公司 | Method for assembling loose piece groups of annular mold |
| CN203956425U (en) * | 2014-06-27 | 2014-11-26 | 上海交运汽车动力系统有限公司 | A kind of trunnion shaft hot pressing assembling device |
| CN104308507A (en) * | 2014-08-30 | 2015-01-28 | 长城汽车股份有限公司 | Press fitting device for timing gear of engine balance shaft |
| CN104802113A (en) * | 2015-04-10 | 2015-07-29 | 力帆实业(集团)股份有限公司 | Fixture for fastening balance shaft |
| CN204772244U (en) * | 2015-07-10 | 2015-11-18 | 盛瑞传动股份有限公司 | Hot cogged is with fixed frock |
| CN106553292A (en) * | 2015-09-30 | 2017-04-05 | 刘细艳 | Mould integration assembling design |
| CN207104701U (en) * | 2017-06-13 | 2018-03-16 | 柳州上汽汽车变速器有限公司 | Shift fork axle assembly positioning tool |
| CN208231647U (en) * | 2018-05-31 | 2018-12-14 | 重庆小康工业集团股份有限公司 | A kind of balance sheath shaft installation tool |
-
2019
- 2019-01-24 CN CN201910067060.8A patent/CN109676551B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04249640A (en) * | 1990-12-28 | 1992-09-04 | Toyota Motor Corp | Installation structure for balance shaft |
| CN101777689A (en) * | 2009-01-08 | 2010-07-14 | 世达普(苏州)通信设备有限公司 | Assembling device of microwave isolator |
| CN202264057U (en) * | 2011-10-12 | 2012-06-06 | 大连创新齿轮箱制造有限公司 | Assembling fixture for balance shaft and gear |
| CN203189607U (en) * | 2013-03-22 | 2013-09-11 | 远勤山 | Trunnion shaft gear assembly of engine |
| CN103658518A (en) * | 2013-10-09 | 2014-03-26 | 贵州安吉航空精密铸造有限责任公司 | Method for assembling loose piece groups of annular mold |
| CN103659390A (en) * | 2013-11-29 | 2014-03-26 | 无锡市航鹄科技有限公司 | Lathe positioning fixture |
| CN203956425U (en) * | 2014-06-27 | 2014-11-26 | 上海交运汽车动力系统有限公司 | A kind of trunnion shaft hot pressing assembling device |
| CN104308507A (en) * | 2014-08-30 | 2015-01-28 | 长城汽车股份有限公司 | Press fitting device for timing gear of engine balance shaft |
| CN104802113A (en) * | 2015-04-10 | 2015-07-29 | 力帆实业(集团)股份有限公司 | Fixture for fastening balance shaft |
| CN204772244U (en) * | 2015-07-10 | 2015-11-18 | 盛瑞传动股份有限公司 | Hot cogged is with fixed frock |
| CN106553292A (en) * | 2015-09-30 | 2017-04-05 | 刘细艳 | Mould integration assembling design |
| CN207104701U (en) * | 2017-06-13 | 2018-03-16 | 柳州上汽汽车变速器有限公司 | Shift fork axle assembly positioning tool |
| CN208231647U (en) * | 2018-05-31 | 2018-12-14 | 重庆小康工业集团股份有限公司 | A kind of balance sheath shaft installation tool |
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| Publication number | Publication date |
|---|---|
| CN109676551A (en) | 2019-04-26 |
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