CN109968142A - A kind of air valve grinding device - Google Patents
A kind of air valve grinding device Download PDFInfo
- Publication number
- CN109968142A CN109968142A CN201910350129.8A CN201910350129A CN109968142A CN 109968142 A CN109968142 A CN 109968142A CN 201910350129 A CN201910350129 A CN 201910350129A CN 109968142 A CN109968142 A CN 109968142A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- cam
- valve
- fixing sleeve
- mandril
- 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.)
- Pending
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 8
- 239000004576 sand Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/08—Machines or devices designed for grinding seat surfaces; Accessories therefor for grinding co-operating seat surfaces by moving one over the other
Abstract
A kind of air valve grinding device, including pedestal, fixed mandril seat above pedestal, mandril is spun on tip-lever support, jacking block is fixed on mandril, the middle of the base fixes cam chair, and camshaft peace turns on cam chair, and cam is fixed on camshaft side, power set is located above cam, cylinder head is upside down on jacking block, and valve rod is pierced by by the valve seat of cylinder head, and stem bottom is protruded into valve rod fixing sleeve and locked by locking nut I, small axis is connect with fixing sleeve bottom, bearing is mounted on small axis two sides and is limited by axis card, meanwhile, bearing is embedded in the raised gap of power set；Before work, the height for adjusting mandril contacts the horizontal cam simultaneously of cylinder head with valve rod fixing sleeve, camshaft band moving cam rotates, and is converted into the up and down motion of valve rod, the intermittent rotary of power set, small axis is set to rotate, valve rod accordingly rotates, and rotates the grinding for being superimposed to form valve rod with up and down motion, and apparatus structure is compact, the effect of grinding is good, improves the leakproofness and power conversion of internal combustion engine.
Description
Technical field
The present invention relates to grinding device more particularly to a kind of air valve grinding devices.
Background technique
In internal combustion engine, the sealing function of cylinder head is extremely important, and sealing performance is bad, directly result in power damage,
The waste of fuel oil, or even certain safety accident is caused, the inspection in the routine inspection repair process of cylinder head, to air valve combination
Looking into reparation is an essential job, repairs and completes mainly by grinding, i.e., is added and grinds in the contact position of valve rod and valve seat
Sand adds valve rod relative to the rotation of valve seat so that contact position formation valve line, portable by the relative motion of valve rod and valve seat
The grinding method of pneumatic lapper is relatively backward, and relatively advanced is to complete to grind using the relative motion of valve body and valve seat
(application No. is 201510154322.6 documents), this device lack this link of the relative rotation of valve rod, air valve group
The leakproofness of conjunction is to be improved.
A kind of air valve grinding device that the present invention refers to solves the above problem.
Summary of the invention
Aiming at the shortcomings existing in the above problems, the present invention provides a kind of air valve grinding device.
To achieve the above object, the present invention provides a kind of air valve grinding device, comprising:
Pedestal, the pedestal install tip-lever support, the method connection top that the tip-lever support is connected by internal screw thread by bolt
Bar, the fixed jacking block in the top of the mandril；
Cam chair is fixedly mounted in the middle position of the pedestal, camshaft is installed in the inside of the cam chair, described convex
The side of wheel shaft is fixedly connected with cam, and the cam is divided into uplink section, high-order jacking section, downlink section in the counterclockwise direction, described
The radius of curvature of high position jacking section is minimum and remains unchanged；
Power set, the power set evenly distributed protrusion on the top of the cam, the inner round wall of the power set,
Raised gap is formed between the two neighboring protrusion, convex head is a wedge angle, and the power set does interval by power drive
Rotation, the angle of rotation it is constant and be less than it is two neighboring it is described protrusion corresponding to angle of circumference；
Cylinder head, the cylinder head are upside down in above the jacking block, are machined with valve seat at the top of the cylinder head；
Valve rod, the valve rod are mounted in the valve seat, and the lower end of the valve rod processes recessed portion and protrudes into valve rod and fixes
In set；
The inwall processing lug boss of the valve rod fixing sleeve, the lug boss are matched with the recessed portion, and retraction slot is along institute
The periphery for stating valve rod fixing sleeve is uniformly processed, and small axis and fixing sleeve bottom integrally connected, the both ends of the small axis are cased with bearing
And limited by axis card, the size of the bearing is matched with the raised gap；
Also process fixing sleeve external screw thread above the valve rod fixing sleeve, locking nut I by the valve rod fixing sleeve with it is described
Valve rod locking.
As a further improvement of that present invention, the tip-lever support totally four four corners for being uniformly fixed on the pedestal.
As a further improvement of that present invention, the lower end processing of the center machining internal thread of the tip-lever support, mandril is outer
Screw thread, the external screw thread and internal screw thread are fine thread.
As a further improvement of that present invention, the tip-lever support is positioned with the mandril by locking nut.
As a further improvement of that present invention, the compound one layer of elastic material in the top of the jacking block.
As a further improvement of that present invention, the uplink section of the cam is involute, and downlink section was the straight line in the center of circle, on
Row section and downlink section pass through fillet and high-order jacking section transition.
As a further improvement of that present invention, pressing spring is also cased between the cylinder head and the locking nut I.
As a further improvement of that present invention, the stroke of the pressing spring is less than the vertical height of downlink section.
The invention has the benefit that
1. the movement of valve rod is composed by moving up and down with rotary motion, cooperate the effect of abrasive sand, the effect of grinding
Good, good seal performance between valve rod valve seat effectively increases the power-conversion efficiencies of internal combustion engine, reduces the consumption of fuel oil, high-precision
The grinding of degree is that existing equipment is unable to reach.
2. the height of tip-lever support is adjustable, so that the versatility of device enhances.
Detailed description of the invention
Fig. 1 is a kind of air valve grinding device main view of the present invention；
Fig. 2 is the top view of cylinder head；
Fig. 3 is the top view of pedestal；
Fig. 4 is the enlarged drawing of location A in Fig. 1；
Fig. 5 is the part drawing of power set；
Fig. 6 is the inner wall expanded view of power set；
Fig. 7 is the part drawing of valve rod fixing sleeve；
Fig. 8 is the part drawing of valve rod；
Fig. 9 is the part drawing of cam.
In figure: 1, pedestal；2, tip-lever support；3, locking nut；4, mandril；5, jacking block；6, cylinder head；61, valve seat；7, valve
Bar；71, valve line；72, recessed portion；8, cam chair；9, cam；91, uplink section；92, high-order jacking section；93, downlink section；10, convex
Wheel shaft；11, power set；111, raised；112, convex head；113, raised gap；12, valve rod fixing sleeve；121, outside fixing sleeve
Screw thread；122, fixing sleeve bottom；123, small axis；124, bearing；125, axis card；126, retraction slot；127, lug boss；13, it locks
Nut I；14, pressing spring.
Specific embodiment
As shown, a kind of air valve grinding device described in the embodiment of the present invention, comprising: as shown in Figure 1, Figure 3, pedestal 1
Tip-lever support 2 is installed by bolt, totally four uniform four corners for being fixed on pedestal 1, tip-lever support 2 pass through internal screw thread to tip-lever support 2
The method of connection connects mandril 4, the center machining internal thread of tip-lever support 2, the lower end threading of mandril 4, external screw thread
It is fine thread with internal screw thread, tip-lever support 2 is positioned with mandril 4 by locking nut 3, the fixed jacking block 5 in the top of mandril 4, jacking block 5
The compound one layer of elastic material in top；Cam chair 8 is fixedly mounted in the middle position of pedestal 1, cam is installed in the inside of cam chair 8
Axis 10, the side of camshaft 10 are fixedly connected with cam 9, as shown in figure 9, cam 9 is divided into uplink section 91, a high position in the counterclockwise direction
Section 92, downlink section 93 are jacked, the radius of curvature of high position jacking section 92 is minimum and remains unchanged, and uplink section 91 is involute, downlink
Section 93 was that the straight line in the center of circle, uplink section 91 and downlink section 93 pass through fillet and high-order jacking 92 transition of section；As shown in Figure 1, dynamic
Power set 11 is located at the top of cam 9, as shown in Figure 5, Figure 6, evenly distributed raised 111 on the inner round wall of power set 11, adjacent two
Raised gap 113 is formed between a raised 111, convex head 112 is a wedge angle, and power set 11 does turning for interval by power drive
Dynamic, the angle of rotation is constant and angle of circumference corresponding to being less than two neighboring raised 111；As shown in Figure 1 and Figure 2, cylinder head 6 is fallen
It sets above jacking block 5, the top of cylinder head 6 is machined with valve seat 61；Valve rod 7 is mounted in valve seat 61, as shown in Fig. 4, Fig. 8, valve
The lower end processing recessed portion 72 of bar 7 simultaneously protrudes into valve rod fixing sleeve 12；As shown in fig. 7, the inwall processing of valve rod fixing sleeve 12 is convex
Portion 127 is played, lug boss 127 is matched with recessed portion 72, and retraction slot 126 is uniformly processed along the periphery of valve rod fixing sleeve 12, small axis
123 are cased with bearing 124 and are limited by axis card 125 with 122 integrally connected of fixing sleeve bottom, the both ends of small axis 123, bearing 124
Size is matched with raised gap 113；As shown in Fig. 4, Fig. 7,12 top of valve rod fixing sleeve also processes fixing sleeve external screw thread 121, lock
Tight nut I13 locks valve rod fixing sleeve 12 and valve rod 7, and pressing spring 14 is also cased between cylinder head 6 and locking nut I13, presses
The stroke of spring 14 is less than the vertical height of downlink section 93.
The movement of valve rod is composed by moving up and down with rotary motion, cooperates the effect of abrasive sand, and the effect of grinding is good,
Good seal performance between valve rod valve seat effectively increases the power-conversion efficiencies of internal combustion engine, reduces the consumption of fuel oil, high-precision
Grinding is that existing equipment is unable to reach, and the height of tip-lever support is adjustable, so that the versatility of device enhances.
When specifically used, for convenience of the present invention is understood, it is described in conjunction with attached drawing；
Adjust: turn mandril makes the jacking block of four mandrils in same level, i.e. cylinder head is horizontal, at the same cam with
The contact of valve rod fixing sleeve, adjusts and completes, and is locked mandril and tip-lever support by locking nut.
Grinding: for convenience of grinding is understood, grinding is divided into two parts of up and down motion and rotary motion of valve rod.Camshaft
Band moving cam uniform rotation, in uplink section, radius of curvature is gradually become smaller, and radius becomes larger, and cam passes through valve rod fixing sleeve for valve rod
It jacks up, pressing spring accumulation of energy, at this point, bearing is accordingly moved to the top of the protrusion of power set；Section, radius of curvature are jacked in a high position
Minimum and no longer change, at this point, valve rod and bearing reach highest order, power covers the rotation for doing an interval under power drive
(power drive is not marked in figure), rotational angle are less than angle of circumference corresponding to adjacent protrusion gap；In downlink section, due to cam
Working trajectory change dramatically, valve rod self weight and pressing spring release energy under, valve rod relative to valve seat complete a beat, this
When, since power set has rotated an angle, bearing can walk about while moving down along the wedge angle of convex head, lead to valve rod
Having occurred the rotation of low-angle while tapping down, the shrinkage of pressing spring is limited to effectively protect cam, meanwhile,
Under the action of abrasive sand, valve rod forms valve line after the relative motion of certain number in valve seat and completes grinding.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of air valve grinding device characterized by comprising
Pedestal (1), the pedestal (1) install tip-lever support (2) by bolt, the side that the tip-lever support (2) is connected by internal screw thread
Method connects mandril (4), and the top of the mandril (4) is fixed jacking block (5)；
Cam chair (8) are fixedly mounted in the middle position of the pedestal (1), camshaft is installed in the inside of the cam chair (8)
(10), the side of the camshaft (10) is fixedly connected cam (9), and the cam (9) is divided into uplink section in the counterclockwise direction
(91), the radius of curvature of high-order jacking section (92), downlink section (93), high-order jacking section (92) is minimum and remains unchanged；
Power set (11), the power set (11) are located at the top of the cam (9), on the inner round wall of the power set (11)
Even arrangement is raised (111), and raised gap (113) is formed between two neighboring raised (111), and convex head (112) is one
Wedge angle, the power set (11) are done the rotation of interval by power drive, and the angle of rotation is constant and is less than two neighboring described convex
Play angle of circumference corresponding to (111)；
Cylinder head (6), the cylinder head (6) are upside down in above the jacking block (5), are machined with valve at the top of the cylinder head (6)
Seat (61)；
Valve rod (7), the valve rod (7) are mounted in the valve seat (61), and lower end processing recessed portion (72) of the valve rod (7) is simultaneously
It protrudes into valve rod fixing sleeve (12)；
The inwall processing lug boss (127) of the valve rod fixing sleeve (12), the lug boss (127) and the recessed portion (72)
Match, retraction slot (126) is uniformly processed along the periphery of the valve rod fixing sleeve (12), small axis (123) and fixing sleeve bottom (122)
Integrally connected, the both ends of the small axis (123) are cased with bearing (124) and are limited by axis card (125), the ruler of the bearing (124)
It is very little to be matched with the raised gap (113)；
Fixing sleeve external screw thread (121) also are processed above the valve rod fixing sleeve (12), locking nut I (13) fixes the valve rod
(12) and the valve rod (7) are covered to lock.
2. a kind of mill air-valve device according to claim 1, it is characterised in that: the tip-lever support (2) is uniformly consolidated for four totally
It is scheduled on four corners of the pedestal (1).
3. a kind of mill air-valve device according to claim 2, it is characterised in that: the center of the tip-lever support (2) adds
Work internal screw thread, the lower end threading of mandril (4), the external screw thread and internal screw thread are fine thread.
4. a kind of mill air-valve device according to claim 3, it is characterised in that: the tip-lever support (2) and the mandril (4)
Pass through locking nut (3) Lai Dingwei.
5. a kind of mill air-valve device according to claim 1, it is characterised in that: compound one layer of the top of the jacking block (5)
Elastic material.
6. a kind of mill air-valve device according to claim 1, it is characterised in that: the uplink section (91) of the cam (9) is
Involute, downlink section (93) were the straight line in the center of circle, and uplink section (91) and downlink section (93) pass through fillet and high-order jacking section
(92) transition.
7. a kind of mill air-valve device according to claim 1, it is characterised in that: the cylinder head (6) and the locking screw
Pressing spring (14) are also cased between female I (13).
8. a kind of mill air-valve device according to claim 7, it is characterised in that: the stroke of the pressing spring (14) is less than
The vertical height of downlink section (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910350129.8A CN109968142A (en) | 2019-04-28 | 2019-04-28 | A kind of air valve grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910350129.8A CN109968142A (en) | 2019-04-28 | 2019-04-28 | A kind of air valve grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109968142A true CN109968142A (en) | 2019-07-05 |
Family
ID=67086875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910350129.8A Pending CN109968142A (en) | 2019-04-28 | 2019-04-28 | A kind of air valve grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109968142A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1467991A (en) * | 1920-09-25 | 1923-09-18 | Continental Engineering Corp | Self-grinding poppet valve |
| CN203343841U (en) * | 2013-06-24 | 2013-12-18 | 上海华润大东船务工程有限公司 | Main engine air valve grinding device |
| CN103659571A (en) * | 2013-12-27 | 2014-03-26 | 山海关船舶重工有限责任公司 | Grinding device for matching surface between air valve and valve seat of large-sized diesel engine |
| CN203680015U (en) * | 2013-10-24 | 2014-07-02 | 长沙星欣机械设备有限公司 | Grinding device for valve port of replenishing valve |
| CN104708515A (en) * | 2015-04-02 | 2015-06-17 | 浙江海洋学院 | Device for grinding air valve |
| CN107398797A (en) * | 2017-08-30 | 2017-11-28 | 重庆市永川区泰兴机械厂 | Marine diesel engine air valve and valve seat mating surface lapping device |
| CN208744426U (en) * | 2018-08-28 | 2019-04-16 | 中核苏阀科技实业股份有限公司 | Small-bore upper-mounting type ball valve valve body grinding tool |
| CN210010791U (en) * | 2019-04-28 | 2020-02-04 | 浙江海洋大学 | Air valve grinding device |
-
2019
- 2019-04-28 CN CN201910350129.8A patent/CN109968142A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1467991A (en) * | 1920-09-25 | 1923-09-18 | Continental Engineering Corp | Self-grinding poppet valve |
| CN203343841U (en) * | 2013-06-24 | 2013-12-18 | 上海华润大东船务工程有限公司 | Main engine air valve grinding device |
| CN203680015U (en) * | 2013-10-24 | 2014-07-02 | 长沙星欣机械设备有限公司 | Grinding device for valve port of replenishing valve |
| CN103659571A (en) * | 2013-12-27 | 2014-03-26 | 山海关船舶重工有限责任公司 | Grinding device for matching surface between air valve and valve seat of large-sized diesel engine |
| CN104708515A (en) * | 2015-04-02 | 2015-06-17 | 浙江海洋学院 | Device for grinding air valve |
| CN107398797A (en) * | 2017-08-30 | 2017-11-28 | 重庆市永川区泰兴机械厂 | Marine diesel engine air valve and valve seat mating surface lapping device |
| CN208744426U (en) * | 2018-08-28 | 2019-04-16 | 中核苏阀科技实业股份有限公司 | Small-bore upper-mounting type ball valve valve body grinding tool |
| CN210010791U (en) * | 2019-04-28 | 2020-02-04 | 浙江海洋大学 | Air valve grinding device |
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