CN111843534A - Self-centering mechanism for reaming screw rod hole of steering gear screw shaft - Google Patents
Self-centering mechanism for reaming screw rod hole of steering gear screw shaft Download PDFInfo
- Publication number
- CN111843534A CN111843534A CN202010753452.2A CN202010753452A CN111843534A CN 111843534 A CN111843534 A CN 111843534A CN 202010753452 A CN202010753452 A CN 202010753452A CN 111843534 A CN111843534 A CN 111843534A
- Authority
- CN
- China
- Prior art keywords
- steering gear
- screw shaft
- positioning
- torsion bar
- bar hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003825 pressing Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention provides a self-centering mechanism for reaming a torsion bar hole of a screw shaft of a steering gear, which comprises a bottom plate, wherein a vertical fixing support is fixedly connected to the bottom plate, and the core of the self-centering mechanism is as follows: a central hole with high coaxiality is arranged on a screw shaft of the steering gear, the outer round shaft neck at the upper end is positioned, and a pneumatic sliding table is adopted to realize pneumatic clamping; in addition, the positioning counter bore at the upper end and the reamer guide hole are skillfully arranged coaxially, and the reamer is used for processing the torsion bar hole, so that the accumulated positioning error is reduced, the requirements on the coaxiality and the diameter size of the torsion bar hole are ensured, the coaxiality of the torsion bar hole is qualified by more than 90 percent, and the diameter of the torsion bar hole reaches the qualified rate of 99.8 percent; the stroke of cylinder slip table is big, and the steering gear screw shaft of different length can seamless switching, and intensity of labour reduces.
Description
Technical Field
The invention belongs to the field of automobile steering gear manufacturing, and relates to a self-centering mechanism for a reaming hole of a torsion bar hole of a steering gear screw shaft.
Background
In the manufacturing of the automobile power steering gear, the coaxiality requirement of a torsion bar hole of a screw shaft of the steering gear is not more than phi 0.03mm and the diameter is 9.01-9.05 mm, a 3-claw self-centering chuck is adopted as a clamp to clamp the excircle of a threaded roller path at present, the clamp is manually clamped, the working labor intensity is high, the positioning reference is not uniform, the reaming precision is influenced by the excircle precision of the threaded roller path, the coaxiality of the torsion bar hole cannot meet the requirement, only 50% of qualified products and the diameter of the torsion bar hole are not easy to guarantee, only 80% of qualified products exist, and the reaming processing of the torsion bar hole of the screw shaft becomes the bottleneck of the steering gear manufacturing.
The coaxiality of an excircle optical axis neck of a screw shaft of the existing steering gear at the end of a torsion bar hole and a central hole at the other end is high.
Disclosure of Invention
The invention provides a self-centering mechanism for reaming a torsion bar hole of a screw shaft of a steering gear, aiming at solving the problems of poor positioning precision, low part qualification rate and high labor intensity of the existing reaming clamp.
Therefore, the technical scheme of the invention is as follows: steering gear screw shaft torsion bar hole reaming is from centering mechanism, including the bottom plate, fixedly connected with vertical fixed bolster on the bottom plate, its characterized in that: the bottom plate is connected with a lower positioning block through a supporting block, and the center of the lower positioning block is provided with a lower central hole positioning journal;
a pneumatic sliding table is fixed on the vertical fixed support along the vertical direction, a pressing plate is fixed on the pneumatic sliding table, a boss part is transversely and integrally arranged at the upper end of the pressing plate, a positioning counter bore and a reamer guide hole are coaxially arranged on the boss part and a supporting block, a central hole positioning shaft neck of a lower positioning block is used for positioning a central hole at the lower end of a steering gear screw shaft, and the positioning counter bore is used for positioning an excircle optical axis neck at the upper end of the steering gear screw shaft;
one side of the bottom plate is connected with a supporting plate, a manual control air valve is installed on the supporting plate, and an output interface of the manual control air valve is connected with an interface of the pneumatic sliding table.
The invention has the beneficial effects that: the invention adopts the lower end center hole with good coaxiality and the upper end excircle plain shaft neck for positioning, and adopts the pneumatic sliding table to realize pneumatic clamping; in addition, the positioning counter bore at the upper end and the reamer guide hole are skillfully arranged coaxially, and the reamer is used for processing the torsion bar hole, so that the accumulated positioning error is reduced, the requirements on the coaxiality and the diameter size of the torsion bar hole are ensured, the coaxiality of the torsion bar hole is qualified by more than 90 percent, and the diameter of the torsion bar hole reaches the qualified rate of 99.8 percent; in addition, the pneumatic clamping is adopted, the stroke of the cylinder sliding table is large, steering gear screw shafts with different lengths can be switched seamlessly, and the labor intensity is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a self-centering mechanism for reaming a torsion bar hole of a steering gear screw shaft according to the invention.
Fig. 2 is a perspective view showing the lower positioning in the present invention.
Fig. 3 is a perspective view of the pressing plate of the present invention.
Fig. 4 is a front view of the compacting plate of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-4, the steering gear screw shaft torsion bar hole reaming self-centering mechanism comprises a bottom plate 1, wherein a vertical fixing support 4 is fixedly connected to the bottom plate 1, a lower positioning block 3 is connected to the bottom plate through a supporting block 2, and a lower center hole positioning journal 3-1 is arranged at the center of the lower positioning block 3; a pneumatic sliding table 8 is fixed on a vertical fixed support 4 along the vertical direction, a compacting plate 5 is fixed on the pneumatic sliding table, a boss part 5-1 is transversely and integrally arranged at the upper end of the compacting plate 5, a positioning counter bore 5-2 and a reamer guide 5-3 holes are coaxially arranged on the boss part 5-1 and a supporting block, a central hole positioning journal 3-1 of a lower positioning block is used for positioning a central hole at the lower end of a steering gear screw shaft, and the positioning counter bore 5-2 is used for positioning an excircle optical axis journal at the upper end of the steering gear screw shaft; one side of the bottom plate is connected with a supporting plate 6, a manual control air valve 7 is installed on the supporting plate 6, and an output interface of the manual control air valve is connected with an interface of the pneumatic sliding table.
In the invention, the boss part 5-1 at the upper end of the pressing plate 5 and the pressing plate 5 can be in a split structure, and the boss part is welded on the pressing plate; the arrangement is convenient to implement and saves cost in the implementation process.
Claims (2)
1. Steering gear screw shaft torsion bar hole reaming is from centering mechanism, including the bottom plate, fixedly connected with vertical fixed bolster on the bottom plate, its characterized in that: the bottom plate is connected with a lower positioning block through a supporting block, and the center of the lower positioning block is provided with a lower central hole positioning journal;
a pneumatic sliding table is fixed on the vertical fixed support along the vertical direction, a pressing plate is fixed on the pneumatic sliding table, a boss part is transversely and integrally arranged at the upper end of the pressing plate, a positioning counter bore and a reamer guide hole are coaxially arranged on the boss part and a supporting block, a central hole positioning shaft neck of a lower positioning block is used for positioning a central hole at the lower end of a steering gear screw shaft, and the positioning counter bore is used for positioning an excircle optical axis neck at the upper end of the steering gear screw shaft;
one side of the bottom plate is connected with a supporting plate, a manual control air valve is installed on the supporting plate, and an output interface of the manual control air valve is connected with an interface of the pneumatic sliding table.
2. The steering gear screw shaft torsion bar hole reaming self-centering mechanism of claim 1, wherein: the upper end boss part (5-1) of the pressing plate and the pressing plate (5) are of a split structure, and the boss part is welded on the pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753452.2A CN111843534A (en) | 2020-07-30 | 2020-07-30 | Self-centering mechanism for reaming screw rod hole of steering gear screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753452.2A CN111843534A (en) | 2020-07-30 | 2020-07-30 | Self-centering mechanism for reaming screw rod hole of steering gear screw shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111843534A true CN111843534A (en) | 2020-10-30 |
Family
ID=72945520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010753452.2A Withdrawn CN111843534A (en) | 2020-07-30 | 2020-07-30 | Self-centering mechanism for reaming screw rod hole of steering gear screw shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111843534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843709A (en) * | 2021-11-21 | 2021-12-28 | 东科克诺尔商用车制动技术有限公司 | Flexible vertical drilling machine fixture for chamfering two ends of central oil hole of screw rod of recirculating ball power steering gear and chamfering grinding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008716A (en) * | 2012-12-09 | 2013-04-03 | 青岛张氏机械有限公司 | Semi-automatic butt drilling machine for steel tube drilling |
| CN203527046U (en) * | 2013-10-14 | 2014-04-09 | 青岛德盛机械制造有限公司 | Reamed hole drilling clamp device for crank rod portion |
| CN104070234A (en) * | 2014-03-31 | 2014-10-01 | 宁波狮球通风机电有限公司 | Automatic reaming machine |
| CN205928036U (en) * | 2016-08-15 | 2017-02-08 | 利欧集团浙江泵业有限公司 | Positioner of motor end cap bearings room fraising |
| CN206373626U (en) * | 2017-01-04 | 2017-08-04 | 兰州工业学院 | A kind of fixture for vertical hole drill machine |
-
2020
- 2020-07-30 CN CN202010753452.2A patent/CN111843534A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008716A (en) * | 2012-12-09 | 2013-04-03 | 青岛张氏机械有限公司 | Semi-automatic butt drilling machine for steel tube drilling |
| CN203527046U (en) * | 2013-10-14 | 2014-04-09 | 青岛德盛机械制造有限公司 | Reamed hole drilling clamp device for crank rod portion |
| CN104070234A (en) * | 2014-03-31 | 2014-10-01 | 宁波狮球通风机电有限公司 | Automatic reaming machine |
| CN205928036U (en) * | 2016-08-15 | 2017-02-08 | 利欧集团浙江泵业有限公司 | Positioner of motor end cap bearings room fraising |
| CN206373626U (en) * | 2017-01-04 | 2017-08-04 | 兰州工业学院 | A kind of fixture for vertical hole drill machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843709A (en) * | 2021-11-21 | 2021-12-28 | 东科克诺尔商用车制动技术有限公司 | Flexible vertical drilling machine fixture for chamfering two ends of central oil hole of screw rod of recirculating ball power steering gear and chamfering grinding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Changsheng Inventor after: Li Xiaohong Inventor before: Guo Changsheng |
|
| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201030 |
|
| WW01 | Invention patent application withdrawn after publication |