阅读说明：本技术 一种发动机缸盖气门阀座座圈角度测量机构 (Engine cylinder lid valve disk seat insert angle measuring mechanism ) 是由 张磊 李林齐 于 2021-01-29 设计创作，主要内容包括：本发明公开了一种发动机缸盖气门阀座座圈角度测量机构,包括：支撑座、测量块、弹簧、钢球和导向杆；支撑座靠近工件的一端设置为锥面,支撑座上设置有通气孔,通气孔与气管连通；测量块对称设置在支撑座的锥面,测量块与支撑座之间设置有间隙,间隙与通气孔连通；弹簧设置在测量块与支撑座之间,弹簧的一端连接在测量块上,弹簧的另一端连接在支撑座上；钢球设置在测量块靠近工件的一端；导向杆设置在支撑座上。通过上述方式,本发明能够快速检测发动机缸盖气门阀座座圈角度的制造是否在尺寸公差要求范围内,通过气动测量能使检测设备能够检验更高等级的尺寸,有效保证测量精度。(The invention discloses an engine cylinder cover valve seat ring angle measuring mechanism, which comprises: the device comprises a supporting seat, a measuring block, a spring, a steel ball and a guide rod; one end of the supporting seat, which is close to the workpiece, is provided with a conical surface, and the supporting seat is provided with an air vent which is communicated with the air pipe; the measuring blocks are symmetrically arranged on the conical surface of the supporting seat, a gap is arranged between the measuring blocks and the supporting seat, and the gap is communicated with the vent hole; the spring is arranged between the measuring block and the supporting seat, one end of the spring is connected to the measuring block, and the other end of the spring is connected to the supporting seat; the steel ball is arranged at one end of the measuring block close to the workpiece; the guide rod is arranged on the supporting seat. Through the mode, the invention can quickly detect whether the angle of the valve seat ring of the valve of the engine cylinder cover is manufactured within the range of the requirement of the dimensional tolerance, and the detection equipment can detect the dimension with higher grade through pneumatic measurement, thereby effectively ensuring the measurement precision.)

1. The utility model provides an engine cylinder lid valve disk seat insert angle measurement mechanism which characterized in that includes: the device comprises a supporting seat, a measuring block, a spring, a steel ball and a guide rod; one end, close to the workpiece, of the supporting seat is provided with a conical surface, the supporting seat is provided with an air vent, and the air vent is communicated with an air pipe; the measuring blocks are symmetrically arranged on the conical surface of the supporting seat, a gap is arranged between the measuring blocks and the supporting seat, and the gap is communicated with the vent hole; the spring is arranged between the measuring block and the supporting seat, one end of the spring is connected to the measuring block, and the other end of the spring is connected to the supporting seat; the steel ball is arranged at one end of the measuring block close to the workpiece; the guide rod is arranged on the supporting seat.

2. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: the gasket is arranged on the supporting seat and the measuring block, the supporting seat is connected with the measuring block through the gasket, and the screw penetrates through the gasket and is connected to the supporting seat and the measuring block respectively.

3. The engine head valve seat insert angle measuring mechanism of claim 2, wherein: still include the compact heap, the compact heap sets up the gasket is kept away from one side of supporting seat and measuring block, and the screw passes compact heap and gasket in proper order.

4. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: still include the gag lever post, the gag lever post sets up in the guide bar, gag lever post and guide bar threaded connection, the gag lever post contacts with the measuring block.

5. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: the guide rod is fixedly connected with the supporting seat through a screw, a positioning pin is arranged between the guide rod and the supporting seat, and two ends of the positioning pin are respectively inserted into the guide rod and the supporting seat.

6. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: the nozzle is inserted into one end of the vent hole close to the measuring block.

7. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: the handle is sleeved on the supporting seat.

8. The engine head valve seat insert angle measuring mechanism of claim 1, wherein: the trachea cannula is characterized by further comprising a protective sleeve, wherein the protective sleeve is sleeved on the trachea.

Technical Field

The invention relates to the technical field of measuring and checking tools, in particular to an angle measuring mechanism for an engine cylinder cover valve seat ring.

Background

Whether the angle of the valve seat ring of the valve of the cylinder cover of the engine is processed is qualified, and the sealing performance, the dynamic performance and the oil consumption of the engine are directly influenced. At present, the angle of a valve seat ring of a valve of an engine cylinder cover is measured by 3 methods:

1. and (5) measuring by using a three-coordinate measuring instrument. The three-coordinate measuring method can accurately measure the angle of the valve seat ring of the valve of the cylinder cover of the engine, but has complex operation and long consumed time, an operator can operate the three-coordinate measurement only through special training, and the three-coordinate measuring method is not suitable for field large-batch full-inspection production.

2. And matching the angle gauge with Sudan red powder for measurement and comparison. The measuring method can only be used for comparing whether the angle is qualified or not, the angle of a machined part cannot be accurately measured, an error exists in the manufacture of the angle gauge, and qualified products are easily judged to be unqualified by mistake.

3. Inductance special detector. The method has the advantages of high instrument and model changing cost, easy damage and high maintenance cost.

Disclosure of Invention

The invention mainly solves the technical problem of providing the engine cylinder cover valve seat ring angle measuring mechanism which can quickly detect whether the manufacturing of the engine cylinder cover valve seat ring angle is within the requirement range of dimensional tolerance, enables the detection equipment to detect the dimension with higher grade through pneumatic measurement, and effectively ensures the measurement precision.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:

an engine cylinder head valve disk seat insert angle measuring mechanism, includes: the device comprises a supporting seat, a measuring block, a spring, a steel ball and a guide rod; one end, close to the workpiece, of the supporting seat is provided with a conical surface, the supporting seat is provided with an air vent, and the air vent is communicated with an air pipe; the measuring blocks are symmetrically arranged on the conical surface of the supporting seat, a gap is arranged between the measuring blocks and the supporting seat, and the gap is communicated with the vent hole; the spring is arranged between the measuring block and the supporting seat, one end of the spring is connected to the measuring block, and the other end of the spring is connected to the supporting seat; the steel ball is arranged at one end of the measuring block close to the workpiece; the guide rod is arranged on the supporting seat.

Preferably, still include the gasket, the gasket sets up on supporting seat and the measuring block, the supporting seat passes through the gasket with the measuring block and is connected, and the screw passes the gasket is connected respectively on supporting seat and the measuring block.

Preferably, the device further comprises a pressing block, the pressing block is arranged on one side, away from the supporting seat and the measuring block, of the gasket, and the screw penetrates through the pressing block and the gasket in sequence.

Preferably, still include the gag lever post, the gag lever post sets up in the guide bar, gag lever post and guide bar threaded connection, the gag lever post contacts with the measuring block.

Preferably, the guide rod is fixedly connected with the supporting seat through a screw, a positioning pin is arranged between the guide rod and the supporting seat, and two ends of the positioning pin are respectively inserted into the guide rod and the supporting seat.

Preferably, the measuring device further comprises a nozzle, wherein the nozzle is inserted at one end of the vent hole close to the measuring block.

Preferably, the support seat further comprises a handle, and the handle is sleeved on the support seat.

Preferably, the tracheal cannula further comprises a protective sleeve, and the protective sleeve is sleeved on the tracheal cannula.

Due to the application of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

the measuring mechanism for the angle of the valve seat ring of the valve of the engine cylinder cover can quickly detect whether the angle of the valve seat ring of the valve of the engine cylinder cover is manufactured within the range of the requirement of dimensional tolerance, can enable detection equipment to detect the dimension of higher grade through pneumatic measurement, and effectively ensures the measurement precision; the measuring mechanism is simple in structure and convenient and fast to operate, and can improve the working efficiency while ensuring the measuring precision.

Drawings

FIG. 1 is a schematic structural diagram of an engine cylinder head valve seat ring angle measuring mechanism.

FIG. 2 is a cross-sectional view of an engine head valve seat insert angle measurement mechanism of the present invention.

FIG. 3 is a cross-sectional view of the connection of an engine cylinder head valve seat insert angle measuring mechanism of the present invention to a workpiece.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

FIG. 5 is a cross-sectional view of another angle of an engine head valve seat insert angle measuring mechanism of the present invention.

Description of reference numerals:

the device comprises a supporting seat 1, a measuring block 2, a spring 3, a steel ball 4, a guide rod 5, a gasket 6, a pressing block 7, a screw 8, a limiting rod 9, a positioning pin 10, a handle 11, a protective sleeve 12, an air pipe 13, a workpiece 14 and a nozzle 15.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Referring to the drawings, an engine cylinder head valve seat ring angle measuring mechanism comprises: supporting seat 1, measuring block 2, spring 3, steel ball 4 and guide bar 5. One end of the supporting seat 1 close to the workpiece 14 is set to be a conical surface, and the supporting seat 1 is provided with a vent hole which is communicated with the air pipe 13. In order to facilitate the adjustment of the distance from the air outlet of the vent hole to the measuring block 2, the measuring mechanism further comprises a nozzle 15, and the nozzle 15 is inserted at one end of the vent hole close to the measuring block 2.

The measuring block 2 is symmetrically arranged on the conical surface of the supporting seat 1, a gap is arranged between the measuring block 2 and the supporting seat 1, and the gap is communicated with the air vent. In order to better connect the measuring block 2 and the supporting seat 1, the measuring mechanism further comprises a gasket 6, the gasket 6 is arranged on the supporting seat 1 and the measuring block 2, the supporting seat 1 and the measuring block 2 are connected through the gasket 6, and a screw 8 penetrates through the gasket 6 and is respectively connected to the supporting seat 1 and the measuring block 2. The gasket 6 is a whole block and is respectively connected to the supporting seat 1 and the measuring block 2 through two screws 8. The gasket 6 is arranged to be sheet-shaped, and the thickness of the gasket can reach 2mm, so that the gasket 6 has certain elasticity, and can play an auxiliary role when the size of the gap between the measuring block 2 and the supporting seat 1 is changed.

Because the gasket 6 is very thin, in order to avoid damaging the gasket 6 in the screwing process of the screw 8, the measuring mechanism further comprises a pressing block 7, the pressing block 7 is arranged on one side, away from the supporting seat 1 and the measuring block 2, of the gasket 6, and the screw 8 sequentially penetrates through the pressing block 7 and the gasket 6.

Spring 3 sets up between measuring block 2 and supporting seat 1, and the one end of spring 3 is connected on measuring block 2, and the other end of spring 3 is connected on supporting seat 1. Under normal conditions, the spring 3 is in a compression state, the spring 3 has an outward pushing force, so that the steel ball 4 welded on the measuring block 2 is firmly pushed against the angle surface of the valve seat ring of the valve of the cylinder cover of the engine cylinder, the contact is point contact, other uncertain factors in measurement are avoided, and the accuracy and the repeatability of the measuring result are ensured. The measuring mechanism can be pre-positioned to a good state through the guide rod 5, so that the following measuring action is convenient, and great adjustment is not needed.

The steel ball 4 is arranged at one end of the measuring block 2 close to the workpiece 14, and the steel ball 4 is contacted with the workpiece 14 for measurement. The steel ball 4 can be made of hard alloy steel balls 4, the hard alloy has excellent wear resistance, and the service life of the steel ball is prolonged.

The guide rod 5 is arranged on the supporting seat 1, the guide rod 5 is fixedly connected with the supporting seat 1 through a screw, a positioning pin 10 is arranged between the guide rod 5 and the supporting seat 1, and two ends of the positioning pin 10 are respectively inserted into the guide rod 5 and the supporting seat 1. The lower end of the guide rod 5 is accurately positioned with the guide pipe hole of the workpiece 14, the upper end of the guide rod 5 is positioned on the angle surface of the valve seat ring of the engine cylinder cover valve, the contact is line contact, the contact area is small, and the repeatability of measurement is effectively ensured.

This measuring mechanism still includes gag lever post 9, and gag lever post 9 sets up in guide bar 5, and gag lever post 9 and 5 threaded connection of guide bar, gag lever post 9 contact with measuring block 2. The up-and-down adjustment of the limit rod 9 can well control the protrusion of the steel ball 4 on the measuring block 2.

In order to facilitate holding in the using process, the measuring mechanism further comprises a handle 11, and the handle 11 is sleeved on the supporting seat 1. In order to prolong the service life of the air pipe 13, the measuring mechanism further comprises a protective sleeve 12, and the protective sleeve 12 is sleeved on the air pipe 13. The protective sleeve 12 is connected to the handle 11 by a threaded adapter.

In the actual use process, before the measured workpiece 14 is measured, the measuring mechanism is placed in a measured angle lower limit value calibrating piece for zero calibration, because the calibrating piece is designed and processed by simulating the area of the measured workpiece 14, the size of a positioning part is the same as that of the measured workpiece 14, when the pneumatic measuring mechanism is placed in the measured angle lower limit value calibrating piece, the distance between the measuring block 2 and the nozzle 15 in the supporting seat 1 is extremely small, only a very small part of gas leaks from the gap in the stable gas flow of the pneumatic measuring mechanism, most of the gas can be discharged from a gas-electricity converter communicated with the gas pipe 13, the gas-electricity converter converts gas signals discharged from the inside into electric signals, and the electric signals are transmitted to a computer display through a cable, and the position is set as a zero position at this time.

Secondly, the measuring mechanism is placed in the upper limit value calibrating piece of the measured angle to compare the linearity, the upper limit value calibrating piece of the measured angle is designed and manufactured according to the upper limit value of the angle, and the angle is known. Verifying whether the linearity of the measuring mechanism is 1: 1.

the measured parameter is the angle of the valve seat ring of the valve of the cylinder cover of the engine, the measured parameter is converted into the air output from the nozzle 15 in the vent hole to the measuring block 2 in the supporting seat 1 through the measuring mechanism, and the principle is similar to the pneumatic plug gauge measurement of the diameter of the inner hole. The measuring mechanism of the invention needs to be matched with an electro-pneumatic converter and a display for use.

The lower end of a guide rod 5 of the measuring mechanism is firstly inserted into a guide pipe below a valve seat of an engine cylinder cover to be measured, the measuring mechanism is continuously inserted along the direction of the guide pipe until the circumferential surface of the upper end of the guide rod 5 is positioned and contacted with the angular surface of the valve seat ring of the valve of the engine cylinder cover, and the positioning of the pneumatic measuring mechanism is completed at this moment. Meanwhile, the steel ball 4 welded on the measuring block 2 contacts the angle surface of the valve seat ring of the valve of the cylinder cover of the engine, so that the measuring block 2 contracts inwards. The amount of inward contraction of the gauge block 2 changes the distance from the inner slope of the gauge block 2 to the nozzle 15, thereby affecting how much leakage of the stabilized gas pressure supplied from the gas pipe 13 occurs at the nozzle 15 and how much gas is discharged from the gas-to-electric converter. The gas-electric converter converts the gas signal exhausted from the interior into an electric signal and transmits the electric signal to a computer display. And judging whether the angle processed by the angle surface of the valve seat ring of the valve of the cylinder cover of the engine is qualified or not by an operator according to the numerical value displayed by the computer display.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.