Marine diesel engine cylinder block bearing hole processing device and processing method

Abstract

The application discloses a marine diesel engine cylinder body bearing hole processing device and a processing method. The device comprises an operating rod and a sensor. A plurality of track grooves are formed in the operating rod. A moving body is arranged in the track grooves. A rotating support part is arranged on the moving body through an elastic body. A driving part for driving the moving body to slide is arranged in the operating rod. A plurality of limiting parts are arranged at the rear end of the operating rod. The limiting parts comprise elastic expansion parts. A movable rod is rotatably arranged at the outer end of the elastic expansion parts. The movable rod is composed of a first rod body and a second rod body. A roller is arranged on the second rod body. The sensor is arranged on the moving body. The sensor verifies the bearing hole size data by collecting the distance change data between the moving body and the rotating support part. The application provides a size verification scheme used in the bearing hole processing process. The scheme can strictly control the rotation and axial movement operation, accurately verify the bearing hole roundness value and radius value size data, and ensure that the processed bearing hole size is qualified.

Description

TECHNICAL FIELD

[0001] The present application relates to the diesel engine processing equipment technical field, specifically relates to the bearing hole machining device and processing method of marine diesel engine cylinder body. BACKGROUND

[0002] There is a very important link in the processing of the bearing hole of the marine diesel engine, that is, the size inspection of the bearing hole formed by the boring processing, to judge whether the roundness value, radius value and other size data are qualified. At present, the common way to inspect the bearing hole is to insert the handheld detection instrument into the hole to obtain the desired size information, and the detection operation includes taking multiple different depth positions, rotating detection to judge the roundness value of different depth positions, and moving detection along the axial direction of the bearing hole to judge whether the front and rear radius values of the bearing hole are consistent. However, during the process of inserting the handheld detection instrument into the hole, the operation proficiency is required to be high, because it is difficult for human to strictly control the rotation and axial movement of the instrument, thereby reducing the reliability of the detection result. SUMMARY

[0003] The purpose of the present application is to provide a bearing hole machining device and processing method of marine diesel engine cylinder body, which solves the problem of high operation proficiency and low detection result reliability in the size inspection of the bearing hole in the existing bearing hole processing.

[0004] The present application realizes the above-mentioned purpose through the following technical scheme:

[0005] The bearing hole machining device of marine diesel engine cylinder body comprises an operating rod extending between the front end and the rear end, and a sensor for checking the size data of the bearing hole located on the operating rod. A plurality of track grooves extending in the front-rear direction are formed on the operating rod, and a moving body is arranged in each track groove. A rotating support part extending radially outward from the operating rod is arranged on the moving body through an elastic body, which is used to contact the inner wall of the bearing hole and make the operating rod rotatable in the circumferential direction. A driving part is arranged inside the operating rod for synchronously driving all moving bodies to slide along the track grooves. A plurality of limiting parts are arranged at the rear end of the operating rod, which comprises an elastic expansion part extending radially outward from the operating rod, and a movable rod rotatably arranged at the outer end of the elastic expansion part through a spring shaft. The movable rod is composed of a first rod body and a second rod body perpendicular to each other. Under the action of the spring shaft, the first rod body tends to extend radially outward from the operating rod, and the second rod body tends to extend axially forward along the operating rod, and a rolling plane is arranged on the second rod body, and a roller is arranged on the rolling plane, which is coaxial with the operating rod.

[0006] The sensor is arranged on the moving body, and the sensor checks the size data of the bearing hole by collecting the distance change data between the moving body and the rotating support part.

[0007] Further, the rear end of the operating rod is provided with a hand holding part.

[0008] Further, the elastic telescopic part is composed of an outer sleeve rod, an inner sleeve rod and a spring between the outer sleeve rod and the inner sleeve rod.

[0009] Further, the rotating support part comprises an insertion block and a rotating block, the distance between the outer side of the insertion block and the operating rod axis gradually increases from front to back, the distance between the outer side of the rotating block and the operating rod axis is equal to the maximum distance between the outer side of the insertion block and the operating rod axis, and the outer side of the rotating block is provided with a ball.

[0010] Further, the outer side of the insertion block and the rotating block are both arc surfaces, and the centers of the arc surfaces are both located on the operating rod axis.

[0011] Further, the driving part comprises a screw rod located at the inner axis position of the operating rod, a sliding sleeve threadedly connected with the screw rod, and a twisting cover located at the rear end of the screw rod, and the sliding sleeve is fixedly connected with each moving body.

[0012] Further, the distance between the outer end of the elastic telescopic part and the operating rod axis is less than the radius of the bearing hole when the elastic telescopic part is freely extended, the distance between the outer end of the first rod body and the operating rod axis is greater than the radius of the bearing hole when the first rod body extends radially outward along the operating rod and the elastic telescopic part is freely extended, and the distance between the outer end of the second rod body and the operating rod axis is greater than the radius of the bearing hole when the second rod body extends radially outward along the operating rod and the elastic telescopic part is freely extended.

[0013] Further, the first rod body is provided with a ball.

[0014] Further, the rotating support part and the limiting part are both provided with at least three radiation-like distribution parts.

[0015] The application also provides a processing method of a bearing hole of a marine diesel engine cylinder, which is based on the processing device and comprises the following steps:

[0016] The operating rod is inserted into the bearing hole, each rotating support part is in contact with the inner wall of the bearing hole and the operating rod can rotate in the circumferential direction, meanwhile, the first rod body of each limiting part is in contact with the end surface of the bearing hole to limit the axial movement of the operating rod, at this time, all the moving bodies are synchronously driven to slide along the track groove by the driving part to adjust the contact position of the rotating support part and the inner wall of the bearing hole, the operating rod is rotated at different contact positions, and the distance change data between the moving body and the rotating support part is collected by the sensor during the rotation process to check the roundness value of the bearing hole at different positions.

[0017] Continue to insert the operating rod into the bearing hole, so that the first rod body of the movable rod in each limiting part is blocked from rotating by the end face of the bearing hole, thereby driving the second rod body to gradually swing outward, and finally enabling the roller to roll in contact with the inner wall of the bearing hole to limit the rotation of the operating rod in the circumferential direction, at this time, the operating rod is moved in the axial direction of the bearing hole, and the distance change data between the moving body and the rotating support part is collected by the sensor during the movement process to verify the radius value of the bearing hole.

[0018] The application has the beneficial effect that the application provides a size verification scheme used in the bearing hole processing process, which is based on a handheld rod body structure, and the rotating support part plays the roles of automatic centering and rotating support, the limiting part plays the role of axial limiting when rotating in the circumferential direction, and plays the roles of circumferential limiting and axial guiding when moving in the axial direction, so that the rotation and axial movement of the rod body can be strictly controlled during handheld operation, the accurate verification of the roundness value and radius value size data of the bearing hole is completed, and the size of the processed bearing hole is ensured to be qualified. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an axial section view of the bearing hole machining device for the cylinder block of the marine diesel engine.

[0020] Figure 2 It is an enlarged view of the middle part structure. Figure 1

[0021] Figure 3 It is a transverse section view of the bearing hole machining device for the cylinder block of the marine diesel engine.

[0022] Figure 4 It is a state diagram of the bearing hole machining device for the cylinder block of the marine diesel engine when verifying the roundness value of the bearing hole.

[0023] Figure 5 It is a state diagram of the bearing hole machining device for the cylinder block of the marine diesel engine when verifying the radius value of the bearing hole.

[0024] In the figure: 1, operating rod; 2, sensor; 3, track groove; 4, moving body; 5, elastic body; 6, elastic expansion piece; 7, first rod body; 8, second rod body; 9, roller; 10, handheld part; 11, insertion block; 12, rotating block; 13, ball; 14, screw rod; 15, sliding sleeve; 16, twist cover. DETAILED DESCRIPTION

[0025] It is necessary to point out here that the following detailed description is only used to further illustrate the application, and cannot be understood as limiting the protection scope of the application, and the skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0026] ​Combining Figures 1-3 As shown in the figure, the marine diesel engine cylinder block bearing hole processing device comprises an operating rod 1 extending between the front end and the rear end, and a sensor 2 for checking the bearing hole size data on the operating rod 1. The operating rod 1 can adopt a cylindrical structure. The rear end of the operating rod 1 is provided with a hand-held part 10. A plurality of track grooves 3 extending in the front-rear direction are formed on the column body of the operating rod 1. A moving body 4 is arranged in each track groove 3. The moving body 4 is provided with a rotating support part extending radially outward from the operating rod 1 through an elastic body 5 (for example, a plurality of springs with guide rods) for contacting the inner wall of the bearing hole and enabling the operating rod 1 to rotate in the circumferential direction. The interior of the operating rod 1 is provided with a driving part for synchronously driving all the moving bodies 4 to slide along the track grooves 3. The movement of the moving body 4 will drive the rotating support part to move synchronously. The rear end of the operating rod 1 is provided with a plurality of limiting parts. The limiting parts comprise an elastic expansion part 6 extending radially outward from the operating rod 1, and a movable rod rotatably arranged on the outer end of the elastic expansion part 6 through a spring shaft. The movable rod is composed of a first rod body 7 and a second rod body 8 which are perpendicular to each other. Under the action of the spring shaft, the first rod body 7 tends to extend radially outward from the operating rod 1, and the second rod body 8 tends to extend axially forward along the operating rod 1. A rolling plane is arranged on the second rod body 8, and a roller 9 whose rolling plane coincides with the axis of the operating rod 1 is arranged on the second rod body 8.

[0027] The sensor 2 can adopt an ultrasonic or infrared distance measuring sensor. The sensor 2 is arranged on the moving body 4, and the sensor 2 checks the bearing hole size data by collecting the distance change data between the moving body 4 and the rotating support part. Because the outer side of the rotating support part contacts the inner wall of the bearing hole, when the fluctuation of the inner wall of the bearing hole causes the rotating support part to move radially, the distance between the moving body 4 and the rotating support part will change correspondingly.

[0028] Preferably, the elastic expansion part 6 in the present application is composed of an outer sleeve rod, an inner sleeve rod and a spring arranged between the outer sleeve rod and the inner sleeve rod, which can freely elongate under the elastic action of the spring.

[0029] Preferably, the rotating support part in the present application comprises an insertion block 11 and a rotating block 12. The distance between the outer side of the insertion block 11 and the axis of the operating rod 1 gradually increases from front to back, which facilitates the insertion into the bearing hole. The distance between the outer side of the rotating block 12 and the axis of the operating rod 1 is equal to the maximum distance between the outer side of the insertion block 11 and the axis of the operating rod 1. A plurality of balls 13 are arranged on the outer side of the rotating block 12. The balls 13 can reduce the friction by rolling contact, so that the rotation of the operating rod 1 is more stable and smooth. In addition, the outer sides of the insertion block 11 and the rotating block 12 in the present application are both arc surfaces, and the centers of the arc surfaces are both located on the axis of the operating rod 1.

[0030] Preferably, the driving component in this invention includes a lead screw 14 located on the inner axis of the operating lever 1, a sliding sleeve 15 threadedly engaged with the lead screw 14, and a torsion cover 16 located at the rear end of the lead screw 14. The sliding sleeve 15 is fixedly connected to each moving body 4. By manually rotating the torsion cover 16, the lead screw 14 is rotated, thereby causing the sliding sleeve 15 and each moving body 4 to move back and forth. Of course, the driving component can also adopt other types of structures, such as an electric telescopic rod.

[0031] Preferably, in this invention, when the elastic telescopic member 6 is freely extended, the distance between its outer end and the axis of the operating rod 1 is less than the radius of the bearing hole. When the first rod 7 extends radially outward along the operating rod 1 and the elastic telescopic member 6 is freely extended, the distance between the outer end of the first rod 7 and the axis of the operating rod 1 is greater than the radius of the bearing hole. In this way, when the operating rod 1 is inserted, the first rod 7 can fit against the end face of the bearing hole, and further insertion will cause the end face to form a stop effect on the first rod 7, causing the first rod 7 to rotate. When the second rod 8 extends radially outward along the operating rod 1 and the elastic telescopic member 6 is freely extended, the distance between the outer end of the second rod 8 and the axis of the operating rod 1 is greater than the radius of the bearing hole. In this way, when the first rod 7 drives the second rod 8 to rotate, the roller 9 of the second rod 8 can contact the inner wall of the bearing hole and squeeze the elastic telescopic member 6, causing the roller 9 to squeeze into contact with the inner wall of the bearing hole. The roller 9 itself is made of friction material, and its sliding friction in the non-rolling direction is large under the state of squeezing contact, thereby playing a role in circumferential limiting and axial guidance.

[0032] Preferably, in this invention, the surface of the first rod 7 is provided with ball bearings 13, which can reduce the rotational resistance of the operating rod 1 when it is in contact with the bearing hole end face of the first rod 7.

[0033] Preferably, in this invention, both the rotating support portion and the limiting portion have at least three, such as four or six, arranged radially.

[0034] The present invention also provides a method for machining bearing holes in marine diesel engine cylinder blocks, which is based on the above-mentioned machining apparatus and includes the following steps:

[0035] Combination Figure 4As shown, the operating rod 1 is inserted into the bearing hole, so that each rotating support part contacts the inner wall of the bearing hole. That is, under the guidance of the insertion block 11, the elastic body 5 gradually contracts to match the size of the bearing hole until the rotating block 12 contacts the inner wall of the bearing hole. Since the outer wall of the rotating block 12 is a ball 13, the operating rod 1 can rotate in the circumferential direction. At the same time, the first rod 7 of the movable rod in each limiting part is made to fit against the end face of the bearing hole. The first rod 7 acts as a limiting stop, which can restrict the axial movement of the operating rod 1 and facilitate the control of the operating rod 1 to strictly rotate at the same depth position. At this time, all moving bodies 4 are synchronously driven to slide along the track groove 3 through the driving component to adjust the contact position between the rotating support part and the inner wall of the bearing hole. The operating rod 1 is rotated at different contact positions. During the rotation, the sensor 2 collects the distance change data between the moving body 4 and the rotating support part to verify the roundness value of the bearing hole at different positions.

[0036] Combination Figure 5 As shown, the operating rod 1 is further extended into the bearing hole (overcoming the resistance of the spring shaft and the elastic telescopic component 6), so that the first rod 7 of the movable rod in each limiting part is blocked from rotating by the end face of the bearing hole, thereby driving the second rod 8 to gradually swing outward, and finally making the roller 9 roll into contact with the inner wall of the bearing hole to limit the rotation of the operating rod 1 in the circumferential direction, while also playing an axial guiding role, making the axial movement smoother. At this time, the operating rod 1 is moved axially along the bearing hole. During the movement, the sensor 2 collects the distance change data between the moving body 4 and the rotating support part to verify the radius value of the bearing hole.

[0037] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A machining apparatus for bearing bores in marine diesel engine cylinder blocks, comprising an operating lever (1) extending between a front end and a rear end, and a sensor (2) located on the operating lever (1) for verifying bearing bore size data, characterized in that, The operating lever (1) has several track grooves (3) extending in the front-rear direction. Each track groove (3) contains a moving body (4). Each moving body (4) has a rotating support part extending radially outward along the operating lever (1) via an elastic body (5). This support part contacts the inner wall of the bearing hole and allows the operating lever (1) to rotate in the circumferential direction. The operating lever (1) has a driving component inside for synchronously driving all moving bodies (4) to slide along the track grooves (3). The rear end of the operating lever (1) has several limiting parts. The limiting part includes an elastic telescopic member (6) extending radially outward along the operating rod (1), and a movable rod rotatably disposed at the outer end of the elastic telescopic member (6) via a spring shaft. The movable rod consists of a first rod body (7) and a second rod body (8) that are perpendicular to each other. Under the action of the spring shaft, the first rod body (7) tends to extend radially outward along the operating rod (1), and the second rod body (8) tends to extend axially forward along the operating rod (1). A roller (9) with a rolling plane that coincides with the axis of the operating rod (1) is provided on the second rod body (8). The sensor (2) is mounted on the moving body (4), and the sensor (2) verifies the bearing hole size data by collecting the distance change data between the moving body (4) and the rotating support. The rotating support includes an insertion block (11) and a rotating block (12). The distance between the outer side of the insertion block (11) and the axis of the operating rod (1) gradually increases from front to back. The distance between the outer side of the rotating block (12) and the axis of the operating rod (1) is equal to the maximum distance between the outer side of the insertion block (11) and the axis of the operating rod (1). Ball bearings (13) are arranged on the outer side of the rotating block (12). When the elastic telescopic member (6) extends freely, the distance between the outer end of the elastic telescopic member (6) and the axis of the operating rod (1) is less than the radius of the bearing hole. When the first rod (7) extends radially outward along the operating rod (1) and the elastic telescopic member (6) extends freely, the distance between the outer end of the first rod (7) and the axis of the operating rod (1) is greater than the radius of the bearing hole. When the first rod (7) is in contact with the end face of the bearing hole, it plays a limiting and stopping role, restricting the axial movement of the operating rod (1). When the second rod (8) extends radially outward along the operating rod (1) and the elastic telescopic member (6) extends freely, the distance between the outer end of the second rod (8) and the axis of the operating rod (1) is greater than the radius of the bearing hole. When the first rod (7) drives the second rod (8) to rotate, the roller (9) of the second rod (8) contacts the inner wall of the bearing hole, playing a circumferential limiting and axial guiding role.

2. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, The operating lever (1) has a hand-held part (10) at its rear end.

3. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, The elastic telescopic component (6) consists of an outer sleeve rod, an inner sleeve rod, and a spring located between the outer sleeve rod and the inner sleeve rod, which are movably connected to each other.

4. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, The outer surfaces of the insertion block (11) and the rotating block (12) are both arc surfaces, and the centers of the arc surfaces are located on the axis of the operating rod (1).

5. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, The driving component includes a lead screw (14) located on the inner axis of the operating lever (1), a sliding sleeve (15) threadedly engaged with the lead screw (14), and a torsion cover (16) located at the rear end of the lead screw (14). The sliding sleeve (15) is fixedly connected to each moving body (4).

6. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, The first rod (7) has balls (13) arranged on its surface.

7. The marine diesel engine cylinder block bearing hole machining device according to claim 1, characterized in that, Both the rotating support and the limiting part have at least three parts arranged radially.

8. A method for machining bearing holes in marine diesel engine cylinder blocks, based on the machining apparatus described in any one of claims 1-7, characterized in that the steps include... include: Insert the operating rod (1) into the bearing hole, so that each rotating support part contacts the inner wall of the bearing hole and the operating rod (1) can rotate in the circumferential direction. At the same time, make the first rod body (7) of the movable rod in each limiting part fit with the end face of the bearing hole to restrict the axial movement of the operating rod (1). At this time, drive all moving bodies (4) to slide along the track groove (3) synchronously through the driving component to adjust the contact position between the rotating support part and the inner wall of the bearing hole. Rotate the operating rod (1) at different contact positions. During the rotation, the sensor (2) collects the distance change data between the moving body (4) and the rotating support part to verify the roundness value of the bearing hole at different positions. The operating rod (1) is extended further into the bearing hole, so that the first rod (7) of the movable rod in each limiting part is blocked from rotating by the end face of the bearing hole, thereby driving the second rod (8) to swing outward gradually, and finally the roller (9) rolls into contact with the inner wall of the bearing hole to limit the operation rod (1) from rotating in the circumferential direction. At this time, the operating rod (1) is moved along the bearing hole axis. During the movement, the sensor (2) collects the distance change data between the moving body (4) and the rotating support part to verify the radius value of the bearing hole.

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