CN201792009U - Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine - Google Patents
Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine Download PDFInfo
- Publication number
- CN201792009U CN201792009U CN2010205190902U CN201020519090U CN201792009U CN 201792009 U CN201792009 U CN 201792009U CN 2010205190902 U CN2010205190902 U CN 2010205190902U CN 201020519090 U CN201020519090 U CN 201020519090U CN 201792009 U CN201792009 U CN 201792009U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- hole
- bushing plate
- cylinder cover
- seat ring
- 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
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- Drilling And Boring (AREA)
Abstract
The utility model relates to a process device for controlling depth processing of a cylinder cover valve seat ring hole of a diesel engine. The process device comprises a valve seat hole reaming cutter and a bushing plate, wherein the cylinder cover valve seat ring hole of the bushing plate is a big-end-up step hole; a thrush ball bearing is arranged in a big hole on the upper part of the step hole; an annular lug boss is arranged on a cutter bar of the valve seat hole reaming cutter; and the axial lower end face of the annular lug boss on the cutter bar corresponds to the axial end face of an upper check ring of the thrush ball bearing on the bushing plate. In the process device, the thrush ball bearing is used for performing depth limit and guiding the valve seat hole reaming cutter and the bushing plate is used for limiting the position of the cylinder cover valve seat ring hole, so the processing precision of the cylinder cover valve seat ring hole of the diesel engine is improved; and the valve seat hole reaming cutter is used for cutting and has a strict requirement on the size, so the precision requirement of the cylinder cover valve seat ring hole of the diesel engine is guaranteed.
Description
Technical field
The utility model belongs to diesel engine processing technology device, is specifically related to be used for the processing unit (plant) in diesel engine cylinder cover valve retainer hole.
Background technology
Cylinder cap is one of main parts size of diesel engine, and valve is again one of strength member on the cylinder cap.The effect that press-fits of worker's precision counter race in valve retainer hole has direct influence, and this affects the gas leakage situation of valve again, thereby all influential to performance of diesel engine etc.The scale that machine tool chief axis descends is mainly seen in degree of depth control during existing known technology processing valve retainer hole, thereby by the scale controlling depth, there is tangible drawback in this: at first will there be error in everyone when reading scale; Secondly operator is subjected to external factor man-hour easily and disturbs adding, and has little time to read scale and causes deeply, produces waste product.
The utility model content
Adopt common bushing plate that diesel engine cylinder cover valve retainer hole depth is controlled the problem that exists precision not high in order to solve prior art, the purpose of this utility model is to propose a kind ofly can either can guarantee the process unit that is used for diesel engine cylinder cover valve retainer hole depth machining control of the degree of depth and the precision in seat ring hole again in ordinary machine tool such as the tighter valve retainer hole of radial drilling machine processing request.
For achieving the above object, the utility model is taked following technical scheme:
The process unit that is used for diesel engine cylinder cover valve retainer hole depth machining control comprises that valve-seat bore expands cutter and bushing plate, described bushing plate is provided with the head valve seat ring hole corresponding with cylinder cap, the head valve seat ring hole of described bushing plate is up big and down small stepped hole, is provided with thrust ball bearing in the macropore of the top of stepped hole; The knife bar that described valve-seat bore expands cutter is provided with the boss of annular, and the axial end of back-up ring is corresponding on the thrust ball bearing on the described knife bar on the lower axial end face of the boss of annular and the bushing plate.
Between the following back-up ring of described thrust ball bearing and the head valve seat ring hole on the bushing plate is interference fit, is big matched in clearance between the last back-up ring of thrust ball bearing and the head valve seat ring hole on the bushing plate.
Useful technique effect of the present utility model embodies in the following areas:
1, to adopt thrust ball bearing to carry out the degree of depth on bushing plate spacing and valve seating is expanded cutter lead for the utility model, and bushing plate limits the position in head valve seat ring hole, has improved the machining accuracy in diesel engine cylinder cover valve retainer hole;
2, the utility model adopts valve seating expansion cutter to carry out machining, and its size has strict demand, by guaranteeing the required precision in diesel engine cylinder cover valve retainer hole.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, the process unit that is used for diesel engine cylinder cover valve retainer hole depth machining control comprises that valve-seat bore expands cutter 1 and bushing plate 3.Bushing plate 3 is provided with the head valve seat ring hole corresponding with cylinder cap, and the head valve seat ring hole of bushing plate 3 is up big and down small stepped hole, in the macropore of the top of stepped hole thrust ball bearing 2 is installed; The knife bar that valve-seat bore expands cutter 1 is provided with the positive stop lug boss of annular, and the back-up ring axial end is corresponding on the thrust ball bearing 2 on the knife bar on the lower axial end face of the positive stop lug boss of annular and the bushing plate 3.Between the following back-up ring of thrust ball bearing 2 and the head valve seat ring hole on the bushing plate is interference fit, is big matched in clearance between the last back-up ring of thrust ball bearing and the head valve seat ring hole on the bushing plate.
During process operation, bushing plate 3 is installed on the cylinder head 4, and the targeting part of main shaft decline drive valve-seat bore expansion cutter 1 enters the endoporus of thrust ball bearing 2, and employing cooperation at intermittence between them during owing to design is so brearing bore play the guiding role at this moment.Main shaft continues to descend, and begins cutting.When reaching the requirement degree of depth, then the positive stop lug boss part that expands cutter 1 according to the valve-seat bore of design this moment can arrive to the last back-up ring of bearing 2 immediately, because the gap between last back-up ring and the bushing plate is bigger, so upward back-up ring can be followed valve-seat bore expansion cutter 1 and rotated together.Cutting is finished, and main shaft rises, because the following back-up ring of thrust ball bearing 2 and bushing plate adopt the interference tight fit, valve-seat bore expands when cutter 1 lifts can't take up down back-up ring; The internal orifice dimension of same upward back-up ring is very big, also can't take up back-up ring; Valve-seat bore expands cutter 1 to be withdrawed from fully, then process finishing.
Guarantee that when changing the thickness that to adjust cushion block 5 when cutter maybe needs to adjust the reaming degree of depth degree of depth of processing meets the drawing requirement.
Claims (2)
1. the process unit that is used for diesel engine cylinder cover valve retainer hole depth machining control, comprise that valve-seat bore expands cutter and bushing plate, described bushing plate is provided with the head valve seat ring hole corresponding with cylinder cap, it is characterized in that: the head valve seat ring hole of described bushing plate is up big and down small stepped hole, is provided with thrust ball bearing in the macropore of the top of stepped hole; The knife bar that described valve-seat bore expands cutter is provided with the boss of annular, and the axial end of back-up ring is corresponding on the thrust ball bearing on the described knife bar on the lower axial end face of the boss of annular and the bushing plate.
2. the process unit that is used for diesel engine cylinder cover valve retainer hole depth machining control according to claim 1, it is characterized in that: being interference fit between the following back-up ring of described thrust ball bearing and the head valve seat ring hole on the bushing plate, is big matched in clearance between the last back-up ring of thrust ball bearing and the head valve seat ring hole on the bushing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205190902U CN201792009U (en) | 2010-09-02 | 2010-09-02 | Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205190902U CN201792009U (en) | 2010-09-02 | 2010-09-02 | Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201792009U true CN201792009U (en) | 2011-04-13 |
Family
ID=43846931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205190902U Expired - Fee Related CN201792009U (en) | 2010-09-02 | 2010-09-02 | Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201792009U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994348A (en) * | 2018-07-28 | 2018-12-14 | 武汉船用机械有限责任公司 | A kind of limiting tool of machined bottom |
-
2010
- 2010-09-02 CN CN2010205190902U patent/CN201792009U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994348A (en) * | 2018-07-28 | 2018-12-14 | 武汉船用机械有限责任公司 | A kind of limiting tool of machined bottom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20110902 |