CN204248487U - Three ladder eccentric orfice drilling machine frocks - Google Patents
Three ladder eccentric orfice drilling machine frocks Download PDFInfo
- Publication number
- CN204248487U CN204248487U CN201420704868.5U CN201420704868U CN204248487U CN 204248487 U CN204248487 U CN 204248487U CN 201420704868 U CN201420704868 U CN 201420704868U CN 204248487 U CN204248487 U CN 204248487U
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- CN
- China
- Prior art keywords
- eccentric
- pressing plate
- drill bushing
- drilling machine
- ladder
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of three ladder eccentric orfice drilling machine frocks, large to solve existing shell of power steering gear positioning shaft hole mismachining tolerance, low-quality problem.The utility model three ladder eccentric orfice drilling machine frock, comprise lower bolster, eccentric drill bushing and pressing plate, lower bolster upper surface is used for place work piece, eccentric drill bushing bottom is arranged on workpiece machining hole inner circle, the cylindrical of eccentric drill bushing is provided with boss, and the lower surface of boss and the upper surface of workpiece offset, and the top cylindrical of eccentric drill bushing is held out against by pressing plate, pressing plate is detachably positioned on boss by pressing plate alignment pin, and both sides and the lower bolster of pressing plate removably connect.
Description
Technical field
The utility model relates to drilling machine process technology, is specifically related to a kind of three ladder eccentric orfice drilling machine frocks.
Background technology
The steering of automobile comprises power steering stgear, and its principle is the power drive power assistance pump for steering relying on engine, increases the strength of pilot control front-wheel steer, to realize turning to flexibly with fluid power.In order to install rocker arm shaft sector gear, need arrange the positioning shaft hole of three ladders on shell of power steering gear, as shown in Figure 3, the positioning shaft hole that wherein bottom diameter is minimum is eccentric orfice.
At present, the mode of processing above-mentioned positioning shaft hole is: first process the positioning shaft hole that mid diameter is maximum, then the positioning shaft hole that upper diameter is less is processed, during the processing minimum positioning shaft hole of lower diameter, need the frock skew certain displacement first making positioning power steering gear housing, then ream and reaming.Problems existing is: the accuracy that cannot ensure frock displacement, and mismachining tolerance is large, and crudy is low.
Utility model content
The utility model provides a kind of three ladder eccentric orfice drilling machine frocks, large to solve existing shell of power steering gear positioning shaft hole mismachining tolerance, low-quality problem.
This programme is as follows: three ladder eccentric orfice drilling machine frocks, comprise lower bolster, eccentric drill bushing and pressing plate, lower bolster upper surface is used for place work piece, eccentric drill bushing bottom is arranged on workpiece machining hole inner circle, the cylindrical of eccentric drill bushing is provided with boss, and the lower surface of boss and the upper surface of workpiece offset, and the top cylindrical of eccentric drill bushing is held out against by pressing plate, pressing plate is detachably positioned on boss by pressing plate alignment pin, and both sides and the lower bolster of pressing plate removably connect.
Illustrate: for shell of power steering gear, three ladder positioning shaft holes on shell of power steering gear, wherein middle part is the positioning shaft hole of largest diameter, top is the positioning shaft hole that diameter is less, bottom is the minimum eccentric positioning shaft hole of diameter, adds man-hour, first processes the positioning shaft hole at middle part, then process the positioning shaft hole on top, finally process the positioning shaft hole of bottom.
This programme operation principle is as follows: after processing the positioning shaft hole on middle part and top, shell of power steering gear is placed in lower bolster upper surface, the positioning shaft hole that processes along vertically to, then eccentric drill bushing bottom is inserted into the inner circle of locating and machining axis hole, cylindrical and the top positioning shaft hole cylindrical of eccentric drill bushing are adjacent to, the lower surface of boss is against the upper surface of shell of power steering gear simultaneously, pressing plate holds out against the top cylindrical of eccentric drill bushing, pressing plate and eccentric drill bushing are fixed together by pressing plate alignment pin and locate, finally make after the both sides of pressing plate and lower bolster link together, under the guide effect of eccentric drill bushing, three step tools can process lower eccentric positioning shaft hole.
The longitudinal center line of the eccentric drill bushing of the utility model and positioning shaft hole longitudinal center line to be processed point-blank, therefore, adopt this frock can improve the machining accuracy of positioning shaft hole, improve the crudy of shell of power steering gear positioning shaft hole.
Further, in order to make the location of eccentric drill bushing more firmly stable, the utility model scheme also comprises the housing screw for compressing eccentric drill bushing that four are distributed on eccentric bushing end face border.
Further, the utility model scheme also comprises two tommyhead bolts, the upper mounting groove that two cross sections are U-shaped is had in the both sides of pressing plate, two lower storage tanks are had in the both sides of lower bolster, the head of two tommyhead bolts is placed in two lower storage tanks respectively, the bar portion of two tommyhead bolts is each passed through side direction cell wall and two upper mounting grooves of two lower storage tanks, and the tail end of two tommyhead bolts has all been threaded nut, nut clamping platen.Pressing plate and lower bolster adopt above-mentioned dismountable connected mode, easy to operate during dismounting, Stability Analysis of Structures after assembling.
Further, add man-hour, in order to prevent workpiece from producing disturbance, the utility model scheme also comprises eccentric latch, and eccentric latch inserts locating hole on pressing plate and workpiece to Workpiece fixing.
Accompanying drawing explanation
Fig. 1 is the top view of the utility model embodiment;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is three ladder positioning shaft hole schematic diagrames on shell of power steering gear.
Detailed description of the invention
Below by detailed description of the invention, the utility model is described in further detail:
The present embodiment is for three ladder positioning shaft holes of shell of power steering gear.
The present embodiment three ladder eccentric orfice drilling machine frock, comprises pressing plate 1, tommyhead bolt 2, pressing plate alignment pin 3, eccentric drill bushing 4, lower bolster 5, eccentric latch 6, housing screw 7, shell of power steering gear 8, lower storage tank 9, upper mounting groove 10.
Lower bolster 5 has vertical centre bore, and the upper surface of lower bolster 5 places shell of power steering gear 8, and the positioning shaft hole of shell of power steering gear 8 is relative with the central hole location of lower bolster 5.
Eccentric drill bushing 4 bottom is arranged on the inner circle that shell of power steering gear 8 has processed middle part and top positioning shaft hole, and the cylindrical of eccentric drill bushing 4 and the inner circle of top positioning shaft hole are adjacent to.Housing screw 7 has four, is distributed on eccentric bushing end face border, for compressing eccentric drill bushing 4.
The cylindrical of eccentric drill bushing 4 is provided with boss, and the lower surface of boss and the upper surface of shell of power steering gear 8 offset.The lower surface of pressing plate 1 is pressed on the upper surface of boss, opens vertical through hole in the middle part of pressing plate 1, and the inner circle of through hole holds out against the top cylindrical of eccentric drill bushing 4, and pressing plate 1 is positioned on boss by pressing plate alignment pin 3.The locating hole that eccentric latch inserts on pressing plate 1 and shell of power steering gear 8 positions shell of power steering gear 8.
Both sides and the lower bolster 5 of pressing plate 1 removably connect, realize particular by two tommyhead bolts 2: the upper mounting groove 10 that two cross sections are U-shaped is set respectively in the both sides of pressing plate 1, two lower storage tanks 9 are set respectively in the both sides of lower bolster 5, the head of two tommyhead bolts 2 is placed in two lower storage tanks 9 respectively, the bar portion of two tommyhead bolts 2 is each passed through side direction cell wall and two upper mounting grooves 10 of two lower storage tanks 9, the tail end of two tommyhead bolts 2 has all been threaded nut, nut clamping platen 1.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (4)
1. three ladder eccentric orfice drilling machine frocks, it is characterized in that, comprise lower bolster, eccentric drill bushing and pressing plate, lower bolster upper surface is used for place work piece, and eccentric drill bushing bottom is arranged on workpiece machining hole inner circle, and the cylindrical of eccentric drill bushing is provided with boss, the lower surface of boss and the upper surface of workpiece offset, the top cylindrical of eccentric drill bushing is held out against by pressing plate, and pressing plate is detachably positioned on boss by pressing plate alignment pin, and both sides and the lower bolster of pressing plate removably connect.
2. three ladder eccentric orfice drilling machine frocks according to claim 1, is characterized in that, also comprise the housing screw for compressing eccentric drill bushing that four are distributed on eccentric bushing end face border.
3. three ladder eccentric orfice drilling machine frocks according to claim 1, it is characterized in that, also comprise two tommyhead bolts, the upper mounting groove that two cross sections are U-shaped is had in the both sides of pressing plate, two lower storage tanks are had in the both sides of lower bolster, the head of two tommyhead bolts is placed in two lower storage tanks respectively, the bar portion of two tommyhead bolts is each passed through side direction cell wall and two upper mounting grooves of two lower storage tanks, the tail end of two tommyhead bolts has all been threaded nut, nut clamping platen.
4. three ladder eccentric orfice drilling machine frocks according to claim 1, is characterized in that, also comprise eccentric latch, and eccentric latch inserts locating hole on pressing plate and workpiece to Workpiece fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420704868.5U CN204248487U (en) | 2014-11-22 | 2014-11-22 | Three ladder eccentric orfice drilling machine frocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420704868.5U CN204248487U (en) | 2014-11-22 | 2014-11-22 | Three ladder eccentric orfice drilling machine frocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204248487U true CN204248487U (en) | 2015-04-08 |
Family
ID=52952838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420704868.5U Expired - Fee Related CN204248487U (en) | 2014-11-22 | 2014-11-22 | Three ladder eccentric orfice drilling machine frocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204248487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708078A (en) * | 2015-03-24 | 2015-06-17 | 吴江市菀坪宝得利缝制设备机械厂 | Eccentric hole drill die device |
-
2014
- 2014-11-22 CN CN201420704868.5U patent/CN204248487U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708078A (en) * | 2015-03-24 | 2015-06-17 | 吴江市菀坪宝得利缝制设备机械厂 | Eccentric hole drill die device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |