CN109262084B - Hobbing device for balance shaft with bent rod part - Google Patents
Hobbing device for balance shaft with bent rod part Download PDFInfo
- Publication number
- CN109262084B CN109262084B CN201811479521.4A CN201811479521A CN109262084B CN 109262084 B CN109262084 B CN 109262084B CN 201811479521 A CN201811479521 A CN 201811479521A CN 109262084 B CN109262084 B CN 109262084B
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- Prior art keywords
- positioning
- hole
- balance shaft
- chuck
- positioning block
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- 238000010862 gear shaping Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
Abstract
The invention discloses a gear hobbing device for a balance shaft with a bent rod part, which comprises an upper ejector pin and a positioning and clamping device, wherein the positioning and clamping device comprises a positioning assembly and a hydraulic clamping assembly, the positioning assembly comprises a V-shaped positioning block, a first positioning pin and a positioning disc, and the hydraulic clamping assembly comprises a shell, an expansion chuck and one-to-one hydraulic ejector pins. Through placing the balance shaft perpendicularly, the bottom centre bore location, after fan-shaped base face location prevents changeing, the hydraulic pressure rises core chuck and presss from both sides tight balance shaft excircle, and the gear shaping processing balance shaft profile of tooth portion behind the tight back of upper end centre bore location top has accomplished profile of tooth portion processing size on guaranteeing the basis of balance shaft axle center non-deformable, has solved the problem that the processing precision of the axle type part profile of tooth of this kind of special structure is difficult to guarantee to convenient operation, production efficiency has obtained the promotion.
Description
Technical Field
The invention relates to a gear hobbing device for a balance shaft, in particular to a gear hobbing device for a special balance shaft.
Background
The existing method for positioning and processing teeth on the center holes at two ends cannot meet the requirement of processing special balance shaft teeth with bent rod parts.
Advantages of the invention
The invention mainly solves the technical problems existing in the prior art, and provides a gear hobbing device for a balance shaft with a bent rod part.
The technical problems of the invention are mainly solved by the following technical proposal:
The invention discloses a gear hobbing device for a balance shaft with a bent rod part, which is characterized by comprising an upper thimble and a positioning and clamping device, wherein the positioning and clamping device comprises a positioning component and a hydraulic clamping component,
The positioning assembly comprises a V-shaped positioning block, a first positioning pin and a positioning disc, wherein a pair of first positioning block screw holes are formed in the upper surface of the V-shaped positioning block, a second positioning block screw hole is formed in one end of the V-shaped positioning block, a third positioning block screw hole is formed in the other end of the V-shaped positioning block, a spring, a positioning bolt and a first positioning core are arranged in the second positioning block screw hole, a second positioning core and a clamping ring are arranged in the third positioning block screw hole, a plurality of first positioning disc screw holes and a plurality of second positioning disc screw holes are formed in the positioning disc, a pair of second connecting bolts penetrate through the first positioning block screw holes and are fixedly connected with the positioning disc respectively, and the first positioning pin is in interference connection with the second positioning disc,
The hydraulic clamping assembly comprises a shell, an expansion chuck and one-to-one hydraulic ejector pins, wherein a plurality of first shell screw holes are formed in the top of the shell, the first shell screw holes are connected with the first positioning plate screw holes through first connecting bolts respectively, six second shell screw holes are formed in the bottom circumference of the shell, a chuck hole is formed in the side wall of the expansion chuck, the chuck hole is connected with the shell through a chuck screw, a chuck positioning hole is formed in the top of the expansion chuck, an ejector pin is arranged at the top of the hydraulic ejector pin, an ejector pin hole and an ejector pin positioning hole are formed in the hydraulic ejector pin, six third connecting bolts penetrate through the second shell screw holes, a fourth connecting bolt penetrates through the ejector pin hole, and a second positioning pin penetrates through the ejector pin positioning hole.
The invention discloses a V-shaped positioning block for fixing a balance shaft with a bent rod part, wherein one end of the V-shaped positioning block is provided with a second positioning block screw hole, the other end of the V-shaped positioning block is provided with a third positioning block screw hole, a spring, a positioning bolt and a first positioning core are arranged in the second positioning block screw hole, an adjusting notch is formed in the side wall of the first positioning core, a locking screw hole is formed in the side wall of the second positioning block screw hole, the positioning bolt penetrates through the locking screw hole and the adjusting notch, and a second positioning core and a clamping ring are arranged in the third positioning block screw hole.
The special balance shaft tooth processing tool has the following advantages: through placing the balance shaft perpendicularly, the bottom centre bore location, after fan-shaped base face location prevents changeing, the hydraulic pressure rises core chuck and presss from both sides tight balance shaft excircle, and the gear shaping processing balance shaft profile of tooth portion behind the tight back of upper end centre bore location top has accomplished profile of tooth portion processing size on guaranteeing the basis of balance shaft axle center non-deformable, has solved the problem that the processing precision of the axle type part profile of tooth of this kind of special structure is difficult to guarantee to convenient operation, production efficiency has obtained the promotion.
Drawings
FIG. 1 is a schematic perspective view of a special balance shaft hobbing tooling of the present invention;
FIG. 2 is an exploded view of the special balance shaft hobbing tooling of FIG. 1 in a three-dimensional configuration;
FIG. 3 is an exploded view of the positioning and clamping device of FIG. 2;
FIG. 4 is an exploded view of the positioning assembly of FIG. 3;
FIG. 5 is an exploded view of the V-shaped positioning block of FIG. 4;
FIG. 6 is a schematic perspective view of the balance shaft of FIG. 2;
FIG. 7 is an exploded schematic view of the perspective structure of the hydraulic clamping device of FIG. 3;
FIG. 8 is an enlarged schematic view of the detail of region P in FIG. 7;
Fig. 9 is a schematic view of the V-shaped positioning block according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
As shown in fig. 1 to 8, the hobbing device 1 for balance shafts with curved bars comprises an upper thimble 2 and a positioning and clamping device 4, the positioning and clamping device 4 comprising a positioning assembly 5 and a hydraulic clamping assembly 6.
The positioning assembly 5 comprises a V-shaped positioning block 7, a first positioning pin 8 and a positioning disc 10, wherein a pair of first positioning block screw holes c are formed in the upper surface of the V-shaped positioning block 7, a second positioning block screw hole e is formed in one end of the V-shaped positioning block 7, a third positioning block screw hole d is formed in the other end of the V-shaped positioning block 7, a spring 16, a positioning bolt 15 and a first positioning core 17 are arranged in the second positioning block screw hole e, a second positioning core 14 and a clamping ring 13 are arranged in the third positioning block screw hole d, a plurality of first positioning disc screw holes a and a second positioning disc screw hole b are formed in the positioning disc 10, a pair of second connecting bolts 11 penetrate through the first positioning block screw holes c respectively and are fixedly connected with the positioning disc 10, and the first positioning pin 8 is in interference connection with the second positioning disc screw hole b.
It should be noted that an adjusting slot 171 is provided on the side wall of the first positioning core 17, a locking screw hole 151 is provided on the side wall of the second positioning core screw hole e, and the positioning bolt 15 passes through the locking screw hole 151 and penetrates the adjusting slot 171.
The hydraulic clamping assembly 6 comprises a housing 18, an expansion chuck 19 and a hydraulic thimble 22, wherein a plurality of first housing screw holes f are formed in the top of the housing 18, the first housing screw holes f and the first positioning disk screw holes a are respectively connected through a first connecting bolt 9, six second housing screw holes g are formed in the bottom circumference of the housing 18, a chuck hole h is formed in the side wall of the expansion chuck 19, the chuck hole h is connected with the housing 18 through a chuck screw 24, a chuck positioning hole 33 is formed in the top of the expansion chuck 19, and a mandrel 20 is arranged in the top of the hydraulic thimble 22.
The hydraulic thimble 22 is provided with a thimble hole i and a thimble positioning hole j, six third connecting bolts 25 penetrate through the second casing screw hole g, a fourth connecting bolt 23 penetrates through the thimble hole i, and a second positioning pin 21 penetrates through the thimble positioning hole j.
The specific use method of the special balance shaft hobbing tool is introduced as follows:
S1, one end of a tooth to be machined of the balance shaft 3 is downward, a lower center hole 28 is aligned with an ejector rod 20, an outer circle 27 is placed into a chuck positioning hole 33 of a swelling chuck 19 of a positioning and clamping device 4, and the balance shaft 3 is rotated, so that a second positioning core 14 and a first positioning core 17 on a V-shaped positioning block 7 can prop against a first blank surface 26 and a second blank surface 31 of the balance shaft 3, and a shaft positioning hole 30 on the balance shaft 3 is aligned with a first positioning pin 8, so that positioning is met;
s2, starting a hydraulic button, wherein the ejector rod 20 is propped against the lower central hole 28, the chuck positioning hole 33 of the expansion chuck 19 is tightened to clamp the outer circle 27 of the balance shaft 3, the first positioning pin 8 is inserted into the shaft positioning hole 30 on the balance shaft 3, and the upper ejector pin 2 falls down to prop against the upper central hole 29 at the top of the balance shaft 3;
S3, starting gear hobbing;
And S4, after the gear hobbing is stopped, the starting button is pressed again, the upper thimble 2 moves upwards, the chuck positioning hole 33 of the expansion chuck 19 is loosened, and the balance shaft 3 with the gear hobbing completed is taken out.
The working principle of the V-shaped positioning block 7 is further described below.
As shown in fig. 9, since the positioning bolt 15 has a certain moving space in the adjusting slot 171, the first positioning core 17 can be extended and retracted back and forth, and the head of the first positioning core 17 can always press against one of the sector blank surfaces of the balance shaft under the action of the spring 16. In addition, the fore-and-aft expansion degree of the second positioning core 14 can be finely adjusted so as to adapt to different sector blank surface angles of the balance shaft.
The special balance shaft hobbing tool guarantees the dimensional accuracy of the gear part after hobbing through the high-accuracy clamp, is positioned and clamped in the vertical direction, avoids gravity deformation caused by transverse positioning, and the positioning core on the V-shaped positioning block adopts the spring arrangement, so that the positioning of different sector blank surface angles can be met, the dimensional accuracy of the gear is improved through the cooperation of a machine and a hydraulic system, and the product quality is guaranteed.
Claims (1)
1. The gear hobbing processing device for the balance shaft with the bent rod part is characterized in that the gear hobbing processing device (1) for the balance shaft with the bent rod part comprises an upper thimble (2) and a positioning clamping device (4), the positioning clamping device (4) comprises a positioning component (5) and a hydraulic clamping component (6), the positioning component (5) comprises a V-shaped positioning block (7), a first positioning pin (8) and a positioning disc (10), a pair of first positioning block screw holes (c) are formed in the upper surface of the V-shaped positioning block (7), a second positioning block screw hole (e) is formed in one end of the V-shaped positioning block (7), a third positioning block screw hole (d) is formed in the other end of the V-shaped positioning block (7), a spring (16), a positioning bolt (15) and a first positioning core (17) are arranged in the second positioning block (d), a second positioning core (14) and a plurality of positioning block screw holes (13) are formed in the first positioning block (d), and a plurality of first positioning block screw holes (13) are formed in the second positioning block (e) and connected with a plurality of first positioning disc (10) and a plurality of positioning disc (11) respectively, the hydraulic clamping assembly (6) comprises a shell (18), an expansion chuck (19) and a hydraulic ejector pin (22), wherein a plurality of first shell screw holes (f) are formed in the top of the shell (18), the first shell screw holes (f) and the first positioning disk screw holes (a) are respectively connected through a first connecting bolt (9), six second shell screw holes (g) are formed in the periphery of the bottom of the shell (18), a chuck hole (h) is formed in the side wall of the expansion chuck (19), the chuck hole (h) is connected with the shell (18) through a chuck screw (24), an ejector pin (20) is arranged at the top of the hydraulic chuck (22), an ejector pin hole (i) and a positioning hole (j) are formed in the hydraulic chuck screw holes (f) and are respectively connected through a first connecting bolt (9), a chuck hole (h) is formed in the side wall of the expansion chuck (19), the chuck hole (h) is connected with the shell (18) through a second ejector pin (23), and a fourth ejector pin (23) penetrates through the positioning bolt (j);
An adjusting notch (171) is arranged on the side wall of the first positioning core (17), a locking screw hole (151) is arranged on the side wall of the second positioning block screw hole (e), the positioning bolt (15) penetrates through the locking screw hole (151) and the adjusting notch (171), and a second positioning core (14) and a clamping ring (13) are arranged in the third positioning block screw hole (d); because the positioning bolt (15) has a certain movable space in the adjusting notch (171), the first positioning core (17) can stretch back and forth, and under the action of the spring (16), the head of the first positioning core (17) can always press against one of the fan-shaped blank surfaces of the balance shaft; in addition, the front-back expansion degree of the second positioning core (14) can be finely adjusted, so that the angle of the sector blank surface with different balance shafts is adapted;
the processing steps of the gear hobbing device are as follows:
S1, enabling one end of a tooth to be machined of a balance shaft (3) to face downwards, enabling a lower center hole (28) to be aligned with an ejector rod (20), placing an outer circle (27) into a chuck positioning hole (33) of an expansion chuck (19) of a positioning and clamping device (4), rotating the balance shaft (3) to enable a second positioning core (14) and a first positioning core (17) on a V-shaped positioning block (7) to abut against a first blank surface (26) and a second blank surface (31) of the balance shaft (3), and guaranteeing that a shaft positioning hole (30) on the balance shaft (3) is aligned with a first positioning pin (8) so as to meet positioning;
S2, starting a hydraulic button, enabling an ejector rod (20) to push against a lower central hole (28), enabling a chuck positioning hole (33) of an expansion chuck (19) to tighten and clamp an outer circle (27) of a balance shaft (3), enabling a first positioning pin (8) to be inserted into a shaft positioning hole (30) on the balance shaft (3), and enabling an upper ejector pin (2) to fall down to push against an upper central hole (29) at the top of the balance shaft (3);
S3, starting gear hobbing;
S4, after the gear hobbing is stopped, the starting button is pressed again, the upper ejector pin (2) moves upwards, the chuck positioning hole (33) of the expansion chuck (19) is loosened, and the balance shaft (3) with the gear hobbing completed is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479521.4A CN109262084B (en) | 2018-12-05 | 2018-12-05 | Hobbing device for balance shaft with bent rod part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479521.4A CN109262084B (en) | 2018-12-05 | 2018-12-05 | Hobbing device for balance shaft with bent rod part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109262084A CN109262084A (en) | 2019-01-25 |
| CN109262084B true CN109262084B (en) | 2024-05-10 |
Family
ID=65186962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811479521.4A Active CN109262084B (en) | 2018-12-05 | 2018-12-05 | Hobbing device for balance shaft with bent rod part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109262084B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005070104A (en) * | 2003-08-25 | 2005-03-17 | Fujinon Corp | Clamp device of ferrule and microinterferometer device equipped with the same |
| CN1869395A (en) * | 2006-07-11 | 2006-11-29 | 陈月辉 | Automatic hole drilling apparatus for hand water drill |
| CN201124306Y (en) * | 2007-12-10 | 2008-10-01 | 上海飞华汽车部件有限公司 | Positioning and clamping apparatus |
| CN202701827U (en) * | 2012-06-29 | 2013-01-30 | 重庆歇马机械曲轴有限公司 | Crankshaft key slot milling clamp |
| CN103639799A (en) * | 2013-12-14 | 2014-03-19 | 浙江德宏汽车电子电器股份有限公司 | Positioning fixture tool |
| CN105689811A (en) * | 2016-04-21 | 2016-06-22 | 都江堰宁江宗汇精密小型蜗杆有限责任公司 | Automatic charging and discharging system during milling of precise small worms |
| CN207127356U (en) * | 2017-08-18 | 2018-03-23 | 重庆凯驰汽车部件制造有限公司 | A kind of balance shaft gear hobbing tooling |
| CN209239223U (en) * | 2018-12-05 | 2019-08-13 | 江苏罡阳股份有限公司 | A kind of hobbing device for the balance shaft with bending bar portion |
-
2018
- 2018-12-05 CN CN201811479521.4A patent/CN109262084B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005070104A (en) * | 2003-08-25 | 2005-03-17 | Fujinon Corp | Clamp device of ferrule and microinterferometer device equipped with the same |
| CN1869395A (en) * | 2006-07-11 | 2006-11-29 | 陈月辉 | Automatic hole drilling apparatus for hand water drill |
| CN201124306Y (en) * | 2007-12-10 | 2008-10-01 | 上海飞华汽车部件有限公司 | Positioning and clamping apparatus |
| CN202701827U (en) * | 2012-06-29 | 2013-01-30 | 重庆歇马机械曲轴有限公司 | Crankshaft key slot milling clamp |
| CN103639799A (en) * | 2013-12-14 | 2014-03-19 | 浙江德宏汽车电子电器股份有限公司 | Positioning fixture tool |
| CN105689811A (en) * | 2016-04-21 | 2016-06-22 | 都江堰宁江宗汇精密小型蜗杆有限责任公司 | Automatic charging and discharging system during milling of precise small worms |
| CN207127356U (en) * | 2017-08-18 | 2018-03-23 | 重庆凯驰汽车部件制造有限公司 | A kind of balance shaft gear hobbing tooling |
| CN209239223U (en) * | 2018-12-05 | 2019-08-13 | 江苏罡阳股份有限公司 | A kind of hobbing device for the balance shaft with bending bar portion |
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| Publication number | Publication date |
|---|---|
| CN109262084A (en) | 2019-01-25 |
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