CN207050697U - Engine cylinder fluid measurement device - Google Patents

Abstract

The utility model discloses a measuring device for an engine cylinder, which comprises a roller table and a measuring mechanism arranged on the roller table, the measuring mechanism includes a frame arranged on the roller table; the measuring mechanism also includes a A first measuring assembly for detecting the diameter of the cylinder bore of the cylinder on the frame, the first measuring assembly includes a detection end, and the frame is provided with a device for driving the detection end to extend into or away from The lifting mechanism in the cylinder bore of the cylinder block. The engine cylinder measuring device of the utility model can measure the dimensions of cylinder bores of cylinders of different sizes, and the first measuring component can automatically measure under the driving of the lifting mechanism, which improves the measuring efficiency.

Description

Engine Block Measuring Device

technical field

The utility model relates to the technical field of machinery, in particular to a measuring device for an engine cylinder body.

Background technique

The automobile engine block is the installation body of various mechanisms and systems of the engine. The processing quality of the cylinder block is particularly important, especially the hole size and shape and position tolerance inside the cylinder block are the basis to ensure the assembly and operating life of the engine. However, due to its complex structure, for a long time in China, the cylinder body has been sampled and inspected mainly through the inter-process inspection equipment installed on the production line. The main inspection equipment is mainly through. , making the measurement efficiency low. In addition, the detection methods of many manufacturers are quite backward. They mainly use mechanical measuring tools, such as bore gauges, go-no-go gauges, dial gauges, three-coordinates, etc., as detection tools. It is also very inefficient. At the same time, the diameter of the cylinder bore and the distance from the top surface to the reference are different, and there are also different size and tolerance requirements for the measuring tool. At present, for different models, it is generally necessary to purchase different inspection tools, which causes great waste and increases the workload of employees.

In view of the above defects, it is necessary to provide a new measuring device for the engine block.

Utility model content

The main purpose of the utility model is to provide a measuring device for an engine cylinder, aiming at solving the problems of low efficiency and low precision of cylinder measurement.

In order to achieve the above object, the engine block measuring device proposed by the utility model includes a roller table for conveying the engine block and a measuring mechanism arranged on the roller table, and the measuring mechanism includes a machine installed on the roller table frame; the measuring mechanism also includes a first measuring assembly connected to the frame for detecting the bore diameter of the cylinder block, the first measuring assembly includes a detection end, and the frame is provided with a useful The lifting mechanism is used to drive the detection end to extend into or away from the cylinder bore of the cylinder body.

Preferably, the first measuring assembly includes a first mounting bracket installed on the frame and a first measuring rod and a second measuring rod mounted on the first mounting bracket; the lifting mechanism includes a first Drive cylinder, the first mounting bracket is connected with the first drive cylinder; the first measuring rod and the second measuring rod are hinged, and form a scissors-like structure, the first measuring rod and the second measuring rod A displacement sensor for measuring the distance between the first measuring rod and the second measuring rod is arranged on the measuring rod.

Preferably, a first slider is provided at the connection between the displacement sensor and the first measuring rod and the second measuring rod, so that the displacement sensor can Change while sliding.

Preferably, the first measurement assembly further includes a second drive cylinder installed on the first mounting bracket, the other end of the first measurement rod away from the detection end or the second measurement rod is far away from the detection end The other end of one end is provided with a driving rod, and the second driving cylinder is connected with the driving rod to drive the driving rod to move so as to change the angle between the first measuring rod and the second measuring rod.

Preferably, an elastic member is provided at the hinge between the first measuring rod and the second measuring rod, so that when the second driving cylinder drives the first measuring rod to move, the second measuring rod moves toward the moving in the opposite direction to the first measuring rod; or when the second driving cylinder drives the second measuring rod to move, the first measuring rod is moved in the opposite direction to the second measuring rod.

Preferably, the detection end is provided with a compressed air hole, and the displacement sensor is a grating displacement sensor.

Preferably, the engine cylinder block measuring device further includes a second measuring component for measuring the distance from the first surface of the cylinder block to the second surface of the cylinder block, the second measuring component faces away from the first measuring component set on the other side of the rack.

Preferably, the second measuring assembly includes a second mounting bracket installed on the frame, and a contact rod and a measuring ruler mounted on the second mounting bracket side by side and at intervals, and the lifting mechanism also includes a second Three driving cylinders, the second mounting bracket is connected with the third driving cylinder, the third driving cylinder drives the measuring ruler to move to the first surface of the cylinder body, and drives the contact rod to move below the The second surface of the first surface of the cylinder.

Preferably, the end of the measuring ruler away from the measuring end is provided with a second slider, and the slider is connected to the contact rod so as to drive the slider when the contact rod moves to the second surface of the cylinder body sliding on the measuring ruler; a return spring is arranged between the measuring end of the measuring ruler and the second mounting bracket, so that the measuring ruler can be reset after the measurement is completed.

Preferably, both the measuring ruler and the measuring end of the contact rod are provided with compressed air holes, and the measuring ruler is a grating displacement sensor.

In the technical solution of the utility model, the engine cylinder measuring device includes a roller table and a measuring mechanism arranged on the roller table, and the measuring mechanism includes a frame arranged on the roller table; the measuring mechanism also includes a connection The first measuring assembly for detecting the diameter of the cylinder bore of the cylinder on the frame, the first measuring assembly includes a detection end, and the frame is provided with a device for driving the detection end to extend into Or away from the lifting mechanism in the cylinder bore of the cylinder block. The engine cylinder measuring device of the utility model can measure the dimensions of the cylinder bores of cylinders of different sizes, and the first measuring component can automatically measure under the driving of the lifting mechanism, which improves the measuring efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is the structural representation of engine block measuring device in the utility model embodiment;

Fig. 2 is the structural representation of the first measuring assembly of Fig. 1;

Fig. 3 is the structural representation of the second measuring assembly in Fig. 1;

Fig. 4 is a state diagram of measuring cylinder size by the second measuring component.

Explanation of reference numbers:

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, in the present application, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integration; It may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as the technical solution. Combination does not exist, nor is it within the scope of protection required by the utility model.

The utility model proposes an engine cylinder block measuring device 100, aiming at solving the problem of low measurement efficiency and precision of the cylinder block 70.

Please refer to Fig. 1 and Fig. 4, in one embodiment of the utility model, the engine block measuring device 100 includes a roller table 30 and a measuring mechanism arranged on the roller table 30, the measuring mechanism includes The frame 60 on the roller table 30; the measuring mechanism also includes a first measuring assembly 10 connected on the frame 60 for detecting the diameter of the cylinder bore of the cylinder block 70, the first measuring The assembly 10 includes a detection end 14 , and the frame 60 is provided with a lifting mechanism for driving the detection end 14 into or away from the cylinder bore of the cylinder body 70 . The engine cylinder block measuring device 100 of the present invention can measure the dimensions of cylinder bores of cylinder blocks 70 of different sizes, and the measuring components can be automatically measured under the driving of the lifting mechanism, which improves the measurement efficiency.

In this embodiment, the engine block measuring device 100 includes a first measuring assembly 10, and the first measuring assembly 10 is arranged on a frame 60, wherein the frame 60 is arranged on the roller table 30 of the testing machine, The frame 60 can be driven to move on the roller table 30 by a driving device. The first measuring assembly 10 extends into the cylinder bore of the cylinder body 70 to be tested through the detection end 14 on it, and the first measuring assembly 10 is connected with the lifting mechanism on the frame 60, through which the lifting mechanism Control the first measuring assembly 10 to move up and down, and then drive the detection end 14 on the first measuring assembly 10 to move down to extend into the cylinder hole, or move upward away from the cylinder hole to give the cylinder The movement of the body 70 on the roller table 30 avoids a certain position. Through the first measuring component 10 in this embodiment, the measurement of the bore diameter of the cylinder bore is realized, so as to detect whether the bore diameter of the cylinder bore is qualified or not.

It should be noted that the lifting mechanism can be a motor control assembly, and the detection end 14 is driven by the motor to extend into or away from the cylinder hole of the cylinder body 70; or the lifting mechanism can be a driving cylinder, which is driven by The cylinder is used to drive the movement of the detection end 14.

In addition, the engine block measuring device 100 is connected with a PLC (Programmable Logic Controller, Programmable Logic Controller), and under the control of the PLC, the detection is started and after the workpiece is detected as qualified, the workpiece is controlled to be transferred to the next station.

As a preferred embodiment, the first measuring assembly 10 includes a first mounting bracket 11 installed on the frame 60 and a first measuring rod 12 and a second measuring rod installed on the first mounting bracket 11. Measuring rod 13; the lifting mechanism includes a first driving cylinder 40, and the first mounting bracket 11 is connected to the first driving cylinder 40; the first measuring rod 12 is hinged with the second measuring rod 13, and Forming a scissors-like structure, the first measuring rod 12 and the second measuring rod 13 are provided with a displacement sensor 17 for measuring the distance between the first measuring rod 12 and the second measuring rod 13 .

Referring to FIG. 2 , the first measuring assembly 10 detects the diameter in the cylinder bore by measuring the variation of the distance between the first measuring rod 12 and the second measuring rod 13 . Specifically, the first measuring rod 12 and the second measuring rod 13 are hinged crosswise, such as a scissors-like cross structure as shown in FIG. 13 can rotate around its hinged shaft. And by setting a displacement sensor 17 connected to the first measuring rod 12 and the second measuring rod 13 , the displacement sensor 17 can detect the distance between the first measuring rod 12 and the second measuring rod 13 . When any one of the first measuring rod 12 and the second measuring rod 13 rotates, the distance between the first measuring rod 12 and the second measuring rod 13 will change, and at this moment, the displacement sensor 17 will sense the first measuring rod The distance between the first measuring rod and the second measuring rod is changed, and the changed distance value is obtained, and the value is sent to the PLC, so that the PLC obtains the distance value between the first measuring rod and the second measuring rod. According to the distance value and the change of the distance between the displacement sensor 17 and the hinge shaft, the length of the corresponding aperture can be calculated according to the corresponding proportional formula. The calculation principle is obtained according to the proportion of the corresponding side lengths of similar triangles. Of course, in this embodiment, the aperture measurement program is pre-set in the PLC, and the value of the aperture is obtained by taking the change of the reading of the displacement sensor 17 as a parameter value. Wherein, the displacement sensor 17 is a grating displacement sensor 17, and the grating displacement sensor 17 is used to increase the size detection range, and improve detection accuracy and measurement response speed.

Wherein, the measurement of the aperture, the detection head of the detection end 14 of the first measuring rod 12 and the second measuring rod 13 is close to the inner wall of the cylinder 70 during the detection process, and then the cylinder 70 is measured. the size of the aperture. The detection head is set as a pointed head, which can sense the inner wall of the cylinder body 70 more sensitively and accurately. And in the place scanned by the detection head, if cracks appear on the inner wall of the cylinder bore, the data of the grating displacement sensor 17 will fluctuate. for substandard products. Of course, in order to prevent false detection, the cylinder body 70 can be taken off for detection again.

Moreover, a compressed air hole is provided at the tip of the detection head, so that air is blown out from the compressed air hole during measurement to clean the surface to be measured, thereby improving measurement accuracy.

Further, a first slider 15 is provided at the connection between the displacement sensor 17 and the first measuring rod 12 and the second measuring rod 13, so that the displacement sensor 17 is connected with the first measuring rod 12 and the second measuring rod 13. The change in angle between the rods 13 is measured to slide. In order to make the displacement sensor 17 slide on the first measuring rod 12 and the second measuring rod 13 when the angle of the first measuring rod 12 and the second measuring rod 13 changes, the displacement sensor 17 A first slider 15 is provided at the position where the first measuring rod 12 and the second measuring rod 13 are connected.

In addition, the first measuring assembly 10 also includes a second driving cylinder 16 installed on the first mounting bracket 11, the other end of the first measuring rod 12 away from the detection end 14 or the second measuring The other end of the rod 13 away from the detection end 14 is provided with a driving rod 18, and the second driving cylinder 16 is connected with the driving rod 18 to drive the driving rod 18 to move and thereby change the distance between the first measuring rod 12 and the first measuring rod 12. The angle between the second measuring rods 13 .

The driving rod 18 connected to the second driving cylinder 16 is driven by the second driving cylinder 16 to move, wherein the driving rod 18 can be connected to the first measuring rod 12 or the second measuring rod 13, specifically according to Need to design. Taking connecting the driving rod 18 to the first measuring rod 12 as an example for illustration, the second driving cylinder 16 drives the driving rod 18 to move in the horizontal direction, and the driving rod 18 drives the connected first measuring rod 12 to move. When only one measuring rod moves under the driving of the second driving cylinder 16, if the measuring rod is stretched into the inside of the cylinder body 70 at this time, it is necessary to ensure that one of the measuring rods that cannot move with the second driving cylinder 16 is in the When the measurement starts, it is close to the inner wall of the cylinder body 70, and by turning the motion of another measuring rod, it is close to the inner wall of the cylinder body 70, and then the aperture is measured.

Of course, the number of the second driving cylinder 16 can also be two, and the two second driving cylinders 16 are respectively arranged on the first mounting bracket 11, and are respectively arranged on the first measuring cylinder and the second measuring rod. 13 sides. The first measuring rod 12 and the second measuring rod 13 are respectively driven by the second driving cylinder 16 to move.

As another preferred embodiment, an elastic member is provided at the hinge of the first measuring rod 12 and the second measuring rod 13, so that when the second driving cylinder 16 drives the first measuring rod 12 to move, the The second measuring rod 13 moves in the direction opposite to the first measuring rod 12; or when the second driving cylinder 16 drives the second measuring rod 13 to move, the first measuring rod 12 moves toward the The second measuring rod 13 moves in the opposite direction. In this embodiment, in order to make the first measuring rod 12 and the second measuring rod 13 protrude into the cylinder body 70, they can be extended outward at the same time, so as to be close to the inner wall of the cylinder body 70. An elastic member is arranged at the hinge, and when the second driving cylinder 16 drives the first measuring rod 12 to move, the second measuring rod 13 can move in the direction opposite to the first measuring rod 12; Or when the second driving cylinder 16 drives the second measuring rod 13 to move, the first measuring rod 12 is moved in a direction opposite to that of the second measuring rod 13 .

In another preferred embodiment, the cylinder 70 measuring device 100 further includes a second measuring component 20 for measuring the distance from the first surface of the cylinder 70 to the second surface of the cylinder 70, the second measurement The component 20 is disposed on the other side of the frame 60 facing away from the first measuring component 10 . 3 and 4, the second measuring component 20 is used to measure the distance from the first surface of the cylinder 70 to the second surface, and the second measuring component 20 faces away from the first measuring component 10 set up.

In order to independently control the first measuring assembly 10 and the second measuring assembly 20, two racks 60 are arranged on the roller table 30 so that the two racks 60 are arranged side by side on the roller table 30, the first measurement assembly 10 and the second measurement assembly 20 are set on the two racks 60 respectively. Furthermore, the measurement of the first measuring component 10 will not affect the measurement of the second measuring component 20. Even if the positions of the first measuring component 10 and the second measuring component 20 are to be adjusted, the first measuring component 10 and the second measuring component 20 can be adjusted separately. Second, measure the position of the rack 60 where the component 20 is located.

Further, the second measurement assembly 20 includes a second installation bracket 21 installed on the frame 60, and a contact rod 25 and a measuring ruler 23 installed on the second installation bracket 21 side by side and at intervals. The lifting mechanism also includes a third driving cylinder 50, the second mounting bracket 21 is connected to the third driving cylinder 50, and the third driving cylinder 50 drives the measuring ruler 23 to move to the first surface of the cylinder body 70, And drive the contact rod 25 to move to the second surface lower than the first surface of the cylinder body 70 . Referring to FIG. 4 , the measurement process of the second measuring assembly 20 is: the third driving cylinder 50 drives the second mounting bracket 21 connected thereto to move downward toward the cylinder body 70 , and during the movement, the measuring ruler 23 First move to the first surface of the cylinder body 70, and after it moves to the first surface of the cylinder body 70, the measuring ruler 23 will stop moving, but at this time, the third driving cylinder 50 will continue to drive the second installation When the bracket 21 moves downward, the contact rod 25 continues to move downward with the second mounting bracket 21 . When the contact rod 25 moves to the second surface of the cylinder body 70, the second driving cylinder 16 stops moving. It should be noted that the second surface of the cylinder body 70 is lower than the first surface. At this time, the scale values of the start position and the end position corresponding to the second installation bracket 21 can be obtained at the measurement position, and then the height difference between the first surface and the second surface can be obtained.

Wherein, the measuring ruler 23 is also a grating displacement sensor 17 ; the contact rod 25 is a metal part, so as to increase the service life of the contact rod 25 .

Further, the end of the measuring ruler 23 away from the measuring end is provided with a second slider 22, and the second slider 22 is connected with the contact rod 25 so that when the contact rod 25 moves to the cylinder 70, When the two surfaces drive the slider 15 to slide on the measuring ruler 23; a return spring 24 is arranged between the measuring end of the measuring ruler 23 and the second mounting bracket 21, so that the measuring ruler 23 is completed. Reset after measurement. By setting the second slider 22 on the measuring ruler 23, and the second slider 22 can slide up and down on the measuring ruler 23 with the movement of the contact rod 25, thereby the second slider 22 can be recorded on the measuring ruler 23. The height difference between the first surface and the second surface can be obtained by the start position and end position. Of course, in order to make the measuring ruler 23 return to the initial position after one measurement is completed, a return spring 24 is arranged between the measuring end of the measuring ruler 23 and the second installation.

It should be noted that the measuring end of the measuring ruler 23 and the contact rod 25 in this embodiment is also provided with compressed air holes, so that when measuring, air is blown out from the compressed air holes to clean the surface to be measured and improve measurement accuracy.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Under the conception of the present utility model, the equivalent structural transformations made by using the specification of the utility model and the contents of the accompanying drawings, or directly /Indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims (10)

1. An engine block measuring device, characterized in that it comprises a roller table for conveying the engine block and a measuring mechanism arranged on the roller table, and the measuring mechanism includes a frame arranged on the roller table; The measuring mechanism also includes a first measuring assembly connected to the frame for detecting the diameter of the cylinder bore of the cylinder, the first measuring assembly includes a detection end, and the frame is provided with a device for driving The detection end extends into or away from the lifting mechanism in the cylinder hole of the cylinder body. 2. The engine block measuring device according to claim 1, wherein the first measuring assembly comprises a first mounting bracket mounted on the frame and a second mounting bracket mounted on the first mounting bracket. A measuring rod and a second measuring rod; the lifting mechanism includes a first driving cylinder, the first mounting bracket is connected to the first driving cylinder; the first measuring rod is hinged to the second measuring rod, and A scissors-like structure is formed, and displacement sensors for measuring the distance between the first measuring rod and the second measuring rod are arranged on the first measuring rod and the second measuring rod. 3. The engine block measuring device according to claim 2, characterized in that a first slide block is arranged at the connection between the displacement sensor and the first measuring rod and the second measuring rod, so that the displacement sensor sliding along with the change of the angle between the first measuring rod and the second measuring rod. 4. The engine block measuring device according to claim 2, wherein the first measuring assembly further comprises a second driving cylinder mounted on the first mounting bracket, and the first measuring rod is far away from the The other end of the detection end or the other end of the second measuring rod away from the detection end is provided with a drive rod, and the second drive cylinder is connected with the drive rod to drive the drive rod to move and change the first The angle between the measuring rod and the second measuring rod. 5. The engine block measuring device according to claim 4, wherein an elastic member is provided at the hinge of the first measuring rod and the second measuring rod, so that the second driving cylinder drives the When the first measuring rod moves, the second measuring rod moves in the direction opposite to the first measuring rod; or when the second driving cylinder drives the second measuring rod to move, the second measuring rod moves A measuring rod moves in the opposite direction to said second measuring rod. 6. The measuring device for an engine cylinder according to any one of claims 2-5, characterized in that the detection end is provided with a compressed air hole, and the displacement sensor is a grating displacement sensor. 7. The engine block measuring device according to any one of claims 1-5, characterized in that, the engine block measuring device further comprises a measuring device for measuring the first surface of the cylinder block to the second surface of the cylinder block A second distance measuring component is provided on the other side of the frame facing away from the first measuring component. 8. The engine block measuring device according to claim 7, wherein the second measuring assembly comprises a second mounting bracket mounted on the frame and mounted side by side and at intervals on the second mounting bracket The contact rod and measuring ruler on the bracket, the lifting mechanism also includes a third driving cylinder, the second mounting bracket is connected with the third driving cylinder, and the third driving cylinder drives the measuring ruler to move to the cylinder body the first surface, and drive the contact rod to move to the second surface lower than the first surface of the cylinder. 9. The engine block measuring device according to claim 8, characterized in that, the end of the measuring ruler away from the measuring end is provided with a second slide block, and the slide block is connected with the contact rod so as to When the rod moves to the second surface of the cylinder body, it drives the slider to slide on the measuring ruler; a return spring is arranged between the measuring end of the measuring ruler and the second mounting bracket, so that the measuring The ruler resets after the measurement is completed. 10 . The measuring device for engine cylinder according to claim 8 , characterized in that compressed air holes are provided at the measuring ends of the measuring ruler and the contact rod, and the measuring ruler is a grating displacement sensor. 11 .