CN202825290U - Crankshaft angular leveling positioning device - Google Patents
Crankshaft angular leveling positioning device Download PDFInfo
- Publication number
- CN202825290U CN202825290U CN 201220438680 CN201220438680U CN202825290U CN 202825290 U CN202825290 U CN 202825290U CN 201220438680 CN201220438680 CN 201220438680 CN 201220438680 U CN201220438680 U CN 201220438680U CN 202825290 U CN202825290 U CN 202825290U
- Authority
- CN
- China
- Prior art keywords
- guide post
- locking
- levelling
- guide rod
- connecting plate
- 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.)
- Expired - Fee Related
Links
- 238000003754 machining Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 210000003491 Skin Anatomy 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Abstract
The utility model provides a crankshaft angular leveling positioning device for solving the problems that positioning and machining precision of an existing crankshaft angular leveling device are not easy to guarantee. The device comprises a connecting plate, a leveling oil cylinder, a guide rod locking mechanism and an equipment table frame. The leveling oil cylinder is vertically fixed on the equipment table frame and supports the connecting plate, two crankshaft connecting rod ejector rods are arranged on the upper portion of the connecting plate, a guide rod and a locking guide rod are fixedly connected to the lower portion of the connecting plate, and a wedge groove is arranged on the lower portion of the locking guide rod. The guide rod locking mechanism is arranged on the equipment table frame, and a drill key of the guide rod locking mechanism is contacted and connected with the lower portion of the locking guide rod. Through the additional arrangement of the guide rod locking mechanism, not only is precision of crankshaft angular positioning guaranteed, influence to the positioning precision caused by changes of a connecting rod neck diameter is avoided, but also the positioning stability in the crankshaft machining process is ensured, and the device is not influenced by trace contraction of the oil cylinder when machining is carried out is avoided, and thus caused machining errors are avoided, and machining precision is effectively improved.
Description
Technical field
The utility model relates to a kind of workpiece positioning device for mechanical machining, particularly crank shaft angle to the levelling positioner.
Background technology
Bent axle is rotary gadget in the engine, and it becomes pumping of connecting rod into the circulation rotating motion, is important parts on the engine.The significant points of bent axle is trunnion, and connecting rod neck, trunnion are installed on the cylinder body, and connecting rod neck is connected with crank pin end pore, and connecting rod small end hole is connected with steam-cylinder piston, forms slider-crank mechanism.The rotation of bent axle is the power source of engine, also is the driving source of whole mechanical system.Based on the important function of bent axle in engine, bent axle corresponding levelling location when carrying out machined is most important, and it directly has influence on the machining accuracy of bent axle, and then affects the kinematic accuracy of bent axle.In process, the technique table top of bent axle is related to the angle location at some position of bent axle, as: the machining angle of the flange stomidium of bent axle, straight oilhole, inclined oil hole of air etc.At present, crank shaft angle adopts following apparatus to levelling: a connecting rod of bent axle directly uses stationary positioned piece location, and another connecting rod neck adopts levelling oil cylinder location.The problem that this kind positioner exists is: the stationary positioned piece can not overcome the surperficial black skin in connecting rod footpath to the impact of positioning accuracy, has simultaneously that the levelling oil cylinder micro-shrinkage phenomenon can occur in the process under the cutting force effect, and causes thus mismachining tolerance.
The utility model content
The utility model is used for overcoming the defective of above-mentioned prior art and provides a kind of crank shaft angle of position stability and machining accuracy that can improve to the levelling positioner.
The alleged problem of the utility model solves by the following technical programs:
A kind of crank shaft angle is to the levelling positioner, special feature is: it comprises connecting plate, levelling oil cylinder, guide post retaining mechanism and equipment stand, described levelling oil cylinder is vertically fixed on the equipment stand place, levelling cylinder rod support and connection plate, connecting plate top is provided with two crank-shaft link neck push rods, the affixed guide post in connecting plate bottom and locking guide post, locking guide post bottom is provided with wedge-shaped slot; Described guide post retaining mechanism is arranged on the equipment stand place, and the drift of guide post retaining mechanism touches with the wedge-shaped slot of locking guide post bottom.
Above-mentioned crank shaft angle is to the levelling positioner, described guide post retaining mechanism comprises locking cylinder, and spring and drift, described locking cylinder are horizontally disposed with and fix with equipment stand, the end of locking cylinder bar is connected with drift through screw, and described spring housing is contained on the locking cylinder bar.
Above-mentioned crank shaft angle is to the levelling positioner, and the inclined-plane of described drift equates that with the bevel angle of wedge-shaped slot this angle value is 10-12 °.
Above-mentioned crank shaft angle is to the levelling positioner, and described equipment stand is provided with guide pin bushing, and described locking guide post is arranged in guide pin bushing, and locking guide post and guide pin bushing are slidingly matched.
The utility model improves to the problem that leveling unit is located and machining accuracy is difficult for guaranteeing for existing crank shaft angle, has designed a kind of angle levelling positioner for machining crankshafts technique table top.Described device is provided with the guide post retaining mechanism, and this retaining mechanism utilizes self-lock mechanism that the guide post that is arranged on processed connecting rod neck bottom is locked.Above-mentioned improvement has not only guaranteed the precision of crank shaft angle to the location, avoid because of the impact of connecting rod neck vary in diameter on positioning accuracy, and the guide post retaining mechanism by setting up, guarantee the stability of process location, add the impact that not shunk by the oil cylinder trace, avoid causing thus mismachining tolerance, the Effective Raise machining accuracy.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of drift;
Fig. 3 is the structural representation of locking guide post.
Each label is expressed as follows in the accompanying drawing: 1. equipment stand, 2. locking cylinder, 3. spring, 4. crank-shaft link neck push rod, 5. the 4th connecting rod neck, 6. bent axle, 7. connecting plate, 8. second connecting rod neck, 9. main shaft, 10. guide post, 11. levelling oil cylinders, 12. locking guide posts, 12-1. wedge-shaped slot, 13. guide pin bushing, 14. drifts, 15. screws.
The specific embodiment
Referring to Fig. 1, the utility model comprises connecting plate 7, levelling oil cylinder 11 and equipment stand 1.Levelling oil cylinder 11 is vertically fixed on the equipment stand place, levelling cylinder rod support and connection plate 7, connecting plate top is provided with two crank-shaft link neck push rods 4, these two crank-shaft link neck push rods 4 support respectively second connecting rod neck 8 and the 4th connecting rod neck 5 of bent axle 6, and the center line of the center line of crank spindle 9 and second connecting rod neck 8, the 4th connecting rod neck 5 is coplanar.The affixed guide post 10 in the bottom of connecting plate 7 and locking guide post 12, wherein, locking guide post 12 is positioned at the bottom of Crankshaft Machining position.
Referring to Fig. 1-3, for preventing in process, causing mismachining tolerance, the utility model to be provided with the guide post retaining mechanism because levelling cylinder rod trace shrinks.Described guide post retaining mechanism comprises locking cylinder 2, and spring 3 and drift 14, locking cylinder are horizontally disposed with, fix with equipment stand 1, and the end of locking cylinder bar is connected with drift through screw 15, and spring 3 is sleeved on the locking cylinder bar.Locking guide post 12 bottoms are provided with wedge-shaped slot 12-1, and the inclined-plane of drift 14 equates with the bevel angle of wedge-shaped slot.For realizing the two inclined-plane self-lockings that touch, the angle on drift inclined-plane is 10-12 °.Equipment stand is provided with guide pin bushing 13, and the middle part of described locking guide post 12 is arranged in guide pin bushing, and locking guide post and guide pin bushing are slidingly matched.
Still referring to Fig. 1, the utility model course of work is as follows: the two ends of bent axle 6 are by top axial location, after axial location is finished, the cylinder rod of levelling oil cylinder 11 stretches out, crank-shaft link neck push rod 4 is under the effect of connecting plate 7, with second connecting rod neck and the 4th connecting rod neck apical grafting of bent axle, realize that crank shaft angle is to levelling respectively; Locking cylinder 2 cuts off gas circuit, drift 14 stretches out under the effect of spring 3, enters among the wedge-shaped slot 12-1 of locking guide post 12, and the contact of two inclined-planes cooperates, to lock guide post 12 and axially lock, guarantee to add that crank shaft angle does not change to positioning accuracy in the Crankshaft Machining process.After Crankshaft Machining was finished, locking cylinder 2 was connected the gas circuit cylinder rod and is shunk, and Compress Spring 3 withdraws from drift 14 from the wedge-shaped slot of locking guide post 12 simultaneously; Levelling cylinder rod 11 shrinks.
Claims (4)
1. a crank shaft angle is to the levelling positioner, it is characterized in that: it comprises connecting plate (7), levelling oil cylinder (11), guide post retaining mechanism and equipment stand (1), described levelling oil cylinder (11) is vertically fixed on the equipment stand place, levelling cylinder rod support and connection plates (7), connecting plate top is provided with two crank-shaft link neck push rods (4), the affixed guide post in connecting plate bottom (10) and locking guide post (12), locking guide post bottom is provided with wedge-shaped slot (12-1); Described guide post retaining mechanism is arranged on the equipment stand place, and the drift of guide post retaining mechanism (14) touches with the wedge-shaped slot of locking guide post bottom.
2. crank shaft angle according to claim 1 is to the levelling positioner, it is characterized in that: described guide post retaining mechanism comprises locking cylinder (2), spring (3) and drift (14), described locking cylinder is horizontally disposed with and fixes with equipment stand, the end of locking cylinder bar is connected with drift through screw (15), and described spring (3) is sleeved on the locking cylinder bar.
3. crank shaft angle according to claim 2 is characterized in that to the levelling positioner: the inclined-plane of described drift (14) equates that with the bevel angle of wedge-shaped slot (12-1) this angle value is 10-12 °.
4. crank shaft angle according to claim 3 is characterized in that to the levelling positioner: described equipment stand is provided with guide pin bushing (13), and described locking guide post (12) is arranged in guide pin bushing, and locking guide post and guide pin bushing are slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438680 CN202825290U (en) | 2012-08-31 | 2012-08-31 | Crankshaft angular leveling positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438680 CN202825290U (en) | 2012-08-31 | 2012-08-31 | Crankshaft angular leveling positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202825290U true CN202825290U (en) | 2013-03-27 |
Family
ID=47937082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220438680 Expired - Fee Related CN202825290U (en) | 2012-08-31 | 2012-08-31 | Crankshaft angular leveling positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202825290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425631A (en) * | 2016-05-01 | 2017-02-22 | 保定标正机床有限责任公司 | Fixture positioning support mechanism |
| CN110542377A (en) * | 2019-09-17 | 2019-12-06 | 冯强 | a detect and measure quick aligning device for production of heavy truck accessories |
-
2012
- 2012-08-31 CN CN 201220438680 patent/CN202825290U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425631A (en) * | 2016-05-01 | 2017-02-22 | 保定标正机床有限责任公司 | Fixture positioning support mechanism |
| CN110542377A (en) * | 2019-09-17 | 2019-12-06 | 冯强 | a detect and measure quick aligning device for production of heavy truck accessories |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20200831 |