CN203426752U - Four-axis fixture special for worm and gear shell of automobile electric steering gear - Google Patents
Four-axis fixture special for worm and gear shell of automobile electric steering gear Download PDFInfo
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- CN203426752U CN203426752U CN201320537084.3U CN201320537084U CN203426752U CN 203426752 U CN203426752 U CN 203426752U CN 201320537084 U CN201320537084 U CN 201320537084U CN 203426752 U CN203426752 U CN 203426752U
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- oil cylinder
- depression bar
- fixture
- tie
- plate
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Abstract
The utility model relates to a four-axis fixture special for a worm and gear shell of an automobile electric steering gear and belongs to the technical field of machining fixtures of automobile electric steering gears. According to the four-axis fixture, four sets of fixture units of the same structure are arranged on a fixture bottom plate and are connected with the fixture bottom plate through welded straight taper threaded pipes into a whole. Each set of fixture is composed of a pressing plate, an oil cylinder shaft, a pressing rod, a pressing rod guide sleeve, an oil cylinder, a pulling plate, and the like. Each oil cylinder is fixed on one side of the fixture bottom plate through an oil cylinder locating plate and an oil cylinder locating column. The triangular pulling plates are arranged between thee fixture bottom plate and the oil cylinder locating plates, and three pressing rods are connected with three top points of the pulling plates respectively. The oil cylinders, the pulling plates, the pressing rods, the pressing rod guide sleeves and the pressing plates form an automatic clamping mechanism. Each oil cylinder can control mounting and clamping points of three workpieces to be automatically fastened, manual operation is reduced, and machining efficiency is improved. A plurality of processes can be carried out after one-time mounting and clamping, cutter changing frequency is reduced, operation time is saved, and machining efficiency and machining accuracy are greatly improved.
Description
Technical field
The utility model relates to the special-purpose four axle clamp tools of a kind of electric direction converter of vehicle worm and gear housing, belongs to electric direction converter of vehicle machining fixture technical field.
Background technology
The worm-and-wheel gear of installing in electric direction converter of vehicle worm and gear housing, the required precision of the centre-to-centre spacing of its worm gear and worm screw and the worm gear central shaft relative position size on housing is very high, in electric direction converter of vehicle, the pilot hole of turbine and worm need to meet following concrete technical indicator: 1, pilot hole is apart from darker, and general L/D > is more than 5; 2, aperture fit tolerance IT7/8 level; 3, assembling aperture and installation seat surface have high perpendicularity requirement, perpendicularity≤0.05; 4, seat surface and inside groove being installed there is very strict required distance, and dimensional tolerance is ± 0.013; 5, there are very high axiality requirement, axiality≤0.02 in the aperture at installing hole and two ends; 6, worm gear and worm screw central shaft are very high apart from requiring, and dimensional tolerance is ± 0.02.Therefore how fastening clamping housing is the important step that guarantees machining accuracy.In prior art, common fixture can only housing of clamping, and a hydraulic jack of fixture can only be controlled the automatic fastening of a clamping workpiece point, and it is many to add man-hour number of changing knife, and working (machining) efficiency is very low.
Summary of the invention
The purpose of this utility model is, a kind of four axle clamp tools that are designed with four oil cylinder axles and four workpiece locating shafts are provided, energy is the worm and gear housing of four electric direction converter of vehicles of clamping simultaneously, clamping and unloading process automation, after completing, clamped one time can carry out multi-step process, and under the prerequisite that guarantees machining accuracy, greatly improve working (machining) efficiency, the special-purpose four axle clamp tools of electric direction converter of vehicle worm and gear housing that cut down finished cost.
The utility model is to realize by the following technical solutions above-mentioned purpose:
The special-purpose four axle clamp tools of this electric direction converter of vehicle worm and gear housing are arranged on clamp bottom board by the fixture of four groups of same structures, by the straight-through taper thread pipe joint of welded type end, be connected to become an integral body, it is characterized in that: every group of fixture is by pressing plate, adjust locating piece, oil cylinder locating dowel, oil cylinder axle, depression bar, workpiece locating shaft, welded type end leads directly to taper thread pipe joint, depression bar guide pin bushing, oil cylinder, oil cylinder location-plate and arm-tie form, oil cylinder location-plate is fixed on a side of clamp bottom board by oil cylinder locating dowel, on oil cylinder location-plate, oil cylinder is installed, between clamp bottom board and oil cylinder location-plate, arm-tie is housed, the oil cylinder axle of oil cylinder is connected by cheese head screw with arm-tie, described arm-tie is triangular shaped, on each angle, be manufactured with the draw-in groove connecting with depression bar, after being connected with three summits of arm-tie respectively, three depression bars are sleeved in depression bar guide pin bushing, the surface of depression bar is manufactured with the helicla flute matching with pin on depression bar guide pin bushing, oil cylinder axle drives arm-tie and three depression bars to be synchronized with the movement, and pressing plate is equipped with in the outer end of three depression bars, between oil cylinder, by the straight-through taper thread pipe joint of welded type end, connect, adjustment locating piece is housed on the clamp bottom board of depression bar end, a side of depression bar guide pin bushing is equipped with workpiece locating shaft.
The utility model beneficial effect is compared with prior art:
The special-purpose four axle clamp prodigiosins of this electric direction converter of vehicle worm and gear housing are the worm and gear shell workpiece of four electric direction converter of vehicles of clamping enough simultaneously, and after completing, clamped one time can carry out multiple working procedure processing, reduce number of changing knife, saved the operating time, greatly improved working (machining) efficiency.In addition, the parts such as oil cylinder of the present utility model, arm-tie, depression bar, depression bar guide pin bushing, pressing plate form automated exchanged cutter mechanism, each oil cylinder can be controlled the automatic fastening of three clamping workpiece points, clamping electric direction converter of vehicle worm and gear shell workpiece that can be easily and effectively, reduce manual operation, improve machined efficiency, reduce oil cylinder quantity, save production cost.And utilize the straight-through taper thread pipe joint of welded type end that four groups of fixtures are connected into monoblock type fixture system, can effectively reduce the mismachining tolerance that the vibration of fixture and workpiece causes, greatly improved machining accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the special-purpose four axle clamp tools of electric direction converter of vehicle worm and gear housing;
Fig. 2 is the structural representation of one group of fixture in the special-purpose four axle clamp tools of electric direction converter of vehicle worm and gear housing;
Fig. 3 is the structural representation of depression bar;
Fig. 4 is the structural representation of arm-tie.
In figure: 1, clamp bottom board, 2, pressing plate, 3, adjust locating piece, 4, oil cylinder locating dowel, 5, oil cylinder axle, 6, depression bar, 7, workpiece locating shaft, 8, the straight-through taper thread pipe joint of welded type end, 9, depression bar guide pin bushing, 10, oil cylinder, 11, oil cylinder location-plate, 12, arm-tie, 13, worm and gear housing, 14, helicla flute.
The specific embodiment
The special-purpose four axle clamp tools of this electric direction converter of vehicle worm and gear housing are arranged on clamp bottom board by the fixture of four groups of same structures, by the straight-through taper thread pipe joint 8 of welded type end, be connected to become an integral body, every group of fixture is by pressing plate 2, adjust locating piece 3, oil cylinder locating dowel 4, oil cylinder axle 5, depression bar 6, workpiece locating shaft 7, welded type end leads directly to taper thread pipe joint 8, depression bar guide pin bushing 9, oil cylinder 10, oil cylinder location-plate 11 and arm-tie 12 form, oil cylinder location-plate 11 is fixed on a side of clamp bottom board 1 by oil cylinder locating dowel 4, oil cylinder 10 is installed on oil cylinder location-plate 11, between clamp bottom board 1 and oil cylinder location-plate 11, arm-tie 12 is housed, the oil cylinder axle 5 of oil cylinder 10 is connected by cheese head screw with arm-tie 12.Described arm-tie 12 is triangular shaped, on each angle, be manufactured with the draw-in groove connecting with depression bar 6, after three depression bars 6 are connected with three summits of arm-tie 12 respectively, be sleeved in depression bar guide pin bushing 9, the surface of depression bar 6 is manufactured with the helicla flute 14 matching with pin on depression bar guide pin bushing 9; Oil cylinder axle 5 drives arm-tie 12 to be synchronized with the movement together with three depression bars 6, and pressing plate 2 is equipped with respectively in the outer end of three depression bars 6.Between oil cylinder 10, by the straight-through taper thread pipe joint 8 of welded type end, connect into an integral body to reduce the vibration of workpiece and fixture, on the clamp bottom board 1 of depression bar 6 ends, be equipped with and adjust locating piece 3, in order to adjust the location dimension of worm and gear housing, a side of depression bar guide pin bushing 9 is equipped with workpiece locating shaft 7.Three workpiece locating shafts 7, three pressing plates 2 and the common positioning and clamping electric direction converter of vehicle worm and gear housings of adjustment locating piece 3 (referring to accompanying drawing 1～4).
The course of work of the special-purpose four axle clamp tools of this electric direction converter of vehicle worm and gear housing is as follows, clamp bottom board 1 horizontal positioned when this fixture is used, and oil cylinder 10 is placed in the below of clamp bottom board 1.Electric direction converter of vehicle worm and gear housing is placed on clamp bottom board 1, by adjusting locating piece 3, adjust behind the position of location worm and gear housing, the oil cylinder axle 5 of oil cylinder 10 moves downward, drive arm-tie 12 and depression bar 6 synchronously to move downward, depression bar 6 helicla flute 14 from the teeth outwards turns clockwise with can synchronize under pin acting in conjunction on depression bar guide pin bushing 9, 6 of depression bars drive the pressing plate 2 on it to turn clockwise and clamp worm and gear shell workpiece downwards, when pin during in helicla flute 14 lower end pressing plate 2 stop descending and location, now complete worm and gear housing clamping process.After worm and gear housing completion of processing, the oil cylinder axle 5 of oil cylinder 10 drives arm-tie 12 and depression bar 6 synchronously to move upward, at the lip-deep helicla flute 14 of depression bar 6, can synchronize and be rotated counterclockwise with the pin acting in conjunction down-pressed pole 6 on depression bar guide pin bushing 9,6 of depression bars drive the pressing plate 2 on it to be rotated counterclockwise upwards to unclamp worm and gear shell workpiece, complete the release process of worm and gear housing.
Every cover oil cylinder of every group of above-mentioned fixture can be realized the automatic fastening of three clamping points on worm and gear housing simultaneously and be unclamped by arm-tie 12, three depression bars 6, three depression bar guide pin bushings 9, three pressing plates 2.Clamping electric direction converter of vehicle worm and gear housing that can be easily and effectively, reduces manual operation, improves machined efficiency, reduces oil cylinder quantity, cost-saving.
The above is preferred embodiment of the present utility model, above-mentioned not illustrating done any pro forma restriction to flesh and blood of the present utility model, any simple modification or distortion that person of an ordinary skill in the technical field has done the above specific embodiment according to technical spirit of the present utility model after having read this description, and the technology contents that may utilize above-mentioned announcement is changed or is modified to the equivalent embodiment of equivalent variations, all still belong in the scope of technical solutions of the utility model, and do not deviate from essence of the present utility model and scope.
Claims (1)
1. special-purpose four axle clamp tools of an electric direction converter of vehicle worm and gear housing, it is arranged on clamp bottom board (1) by the fixture of four groups of same structures, by the straight-through taper thread pipe joint (8) of welded type end, be connected to become an integral body, it is characterized in that: every group of fixture is by pressing plate (2), adjust locating piece (3), oil cylinder locating dowel (4), oil cylinder axle (5), depression bar (6), workpiece locating shaft (7), welded type end leads directly to taper thread pipe joint (8), depression bar guide pin bushing (9), oil cylinder (10), oil cylinder location-plate (11) and arm-tie (12) form, oil cylinder location-plate (11) is fixed on a side of clamp bottom board (1) by oil cylinder locating dowel (4), oil cylinder (10) is installed on oil cylinder location-plate (11), between clamp bottom board (1) and oil cylinder location-plate (11), arm-tie (12) is housed, the oil cylinder axle (5) of oil cylinder (10) is connected by cheese head screw with arm-tie (12), described arm-tie (12) is triangular shaped, on each angle, be manufactured with the draw-in groove connecting with depression bar (6), three depression bars (6) are sleeved in depression bar guide pin bushing (9) after being connected with three summits of arm-tie (12) respectively, the surface of depression bar (6) is manufactured with the helicla flute (14) matching with pin on depression bar guide pin bushing (9), oil cylinder axle (5) drives arm-tie (12) and three depression bars (6) to be synchronized with the movement, and pressing plate (2) is equipped with in the outer end of three depression bars (6), between oil cylinder (10), by the straight-through taper thread pipe joint (8) of welded type end, connect, be equipped with and adjust locating piece (3) on the clamp bottom board (1) of depression bar (6) end, a side of depression bar guide pin bushing (9) is equipped with workpiece locating shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537084.3U CN203426752U (en) | 2013-08-31 | 2013-08-31 | Four-axis fixture special for worm and gear shell of automobile electric steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320537084.3U CN203426752U (en) | 2013-08-31 | 2013-08-31 | Four-axis fixture special for worm and gear shell of automobile electric steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203426752U true CN203426752U (en) | 2014-02-12 |
Family
ID=50055814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320537084.3U Withdrawn - After Issue CN203426752U (en) | 2013-08-31 | 2013-08-31 | Four-axis fixture special for worm and gear shell of automobile electric steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203426752U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433782A (en) * | 2013-08-31 | 2013-12-11 | 荆州市祥达机械制造有限公司 | Four-axis clamp for automobile electric steering gear worm and gear shell |
| CN104999311A (en) * | 2015-08-04 | 2015-10-28 | 重庆山青机械制造有限公司 | Quick clamping system for reverse gear shifting cantilevers |
-
2013
- 2013-08-31 CN CN201320537084.3U patent/CN203426752U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433782A (en) * | 2013-08-31 | 2013-12-11 | 荆州市祥达机械制造有限公司 | Four-axis clamp for automobile electric steering gear worm and gear shell |
| CN103433782B (en) * | 2013-08-31 | 2015-08-26 | 荆州市祥达机械制造有限公司 | The special four axle clamp tools of electric direction converter of vehicle worm and gear housing |
| CN104999311A (en) * | 2015-08-04 | 2015-10-28 | 重庆山青机械制造有限公司 | Quick clamping system for reverse gear shifting cantilevers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140212 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |