CN114509032A

CN114509032A - Crankshaft detection device

Info

Publication number: CN114509032A
Application number: CN202210045684.1A
Authority: CN
Inventors: 蒙浩; 王瑞能
Original assignee: Reach Precision Measurement Guiyang Co ltd
Current assignee: Reach Precision Measurement Guiyang Co ltd
Priority date: 2022-01-16
Filing date: 2022-01-16
Publication date: 2022-05-17

Abstract

The invention discloses a crankshaft detection device. Comprises a positioning clamping part, a detection part and a balancing part; the positioning and clamping part (1) consists of a pneumatic thimble machine (1-1) and a coupling (1-3) for connecting a motor (1-4) and a thimble shaft (1-8); the detection part (3) consists of two supporting blocks (3-6) which are obliquely fixed on the clamping seat (3-1) and two sensors (3-4) which are fixed on the clamping seat (3-1); the balance part (4) is composed of two X-direction slide rails (4-2) fixed on a support (4-1) through fixing plates (4-10), an L-shaped mounting plate (4-3) installed on the two X-direction slide rails (4-2) through X-direction sliders (4-5), Y-direction slide rails (4-8) fixed on the L-shaped mounting plate, connecting blocks (4-4) installed on the Y-direction slide rails through the Y-direction sliders, and Z-direction slide rails (4-6) installed on the connecting blocks through Z-direction sliders (4-7), and one end of each Z-direction slide rail is fixedly connected with a clamping seat (3-1).

Description

Crankshaft detection device

Technical Field

The invention relates to a crankshaft detection device, and belongs to detection devices for engine parts.

Background

As is known to all, although the detection of the roundness and the runout of the crankshaft belongs to precise testing, because the crankshaft structure is complex and the detection is difficult, currently, the radial roundness and the runout of each journal of the crankshaft are mostly measured by adopting a dial indicator or a dial indicator and adopting a manual operation mode. The positioning is troublesome, the labor intensity is high, the efficiency is low, and the positioning is also influenced by the technical experience of detection personnel, reading errors and other considered factors, so that the requirement of large-scale production is difficult to adapt.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the crankshaft detection device which is high in detection efficiency and accurate and reliable in measured data.

In order to achieve the purpose, the invention adopts the following technical scheme: the device comprises a positioning clamping part, a detection part and a balance part; the positioning and clamping part consists of a pneumatic thimble machine, a motor fixed on the base and a thimble shaft connected with the motor shaft through a coupler; the detection part consists of an omega-shaped clamping seat, two supporting blocks obliquely fixed at the opening position of the clamping seat and two sensors fixed at the top of the clamping seat, and one end of the clamping seat is provided with a square hole; the balance part is composed of two X-direction slide rails fixed on the support through fixing plates, an L-shaped mounting plate installed on the two X-direction slide rails through X-direction sliders, a Y-direction slide rail vertically fixed on the L-shaped mounting plate, a connecting block installed on the Y-direction slide rail through Y-direction sliders, and a Z-direction slide rail horizontally installed on the connecting block through Z-direction sliders, wherein one end of the Z-direction slide rail is inserted into and fixed in a square hole.

The supporting seat is arranged below the thimble shaft, and the bearing is fixed on the thimble shaft and is fixed on the supporting seat through the bearing seat.

Two V-shaped supporting plates are arranged between the supporting seat and the pneumatic thimble machine.

The other end of the clamping seat is fixed with a counterweight handle.

A movable handle is fixed on the L-shaped mounting plate.

Compared with the prior art, the invention adopts the technical scheme, the pneumatic ejector pin and the fixed ejector pin can be used for quickly positioning the workpiece (crankshaft), and the servo motor can be used for driving the crankshaft to rotate around the axis. On the basis, the V-shaped positioning block can be simulated by the clamping seat provided with the sensor to position the shaft neck and measure the shaft neck. The balance part can ensure that the crankshaft keeps the clamping seat horizontal all the time in the rotating process, thereby ensuring the accuracy of the measuring result. The invention can automatically finish the accurate measurement of the roundness and the jump of each shaft neck by one-time clamping, not only can reduce the labor intensity and improve the detection efficiency, but also can thoroughly eliminate the defect that manual measurement is easily influenced by human factors.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective view of the positioning and clamping portion of the present invention;

FIG. 3 is a schematic view of the structure of the detecting part in the present invention;

FIG. 4 is a perspective view of the detecting part of the present invention;

fig. 5 is a schematic perspective view of the balancer portion of the present invention.

In the figure: the device comprises a positioning clamping part 1, a pneumatic thimble machine 1-1, a movable centre 1-2, a coupler 1-3, a motor 1-4, a machine base 1-5, a supporting seat 1-6, a bearing 1-7, a thimble shaft 1-8 and a V-shaped supporting plate 1-9; a crankshaft 2; the device comprises a detection part 3, a clamping seat 3-1, a counterweight handle 3-2, a square hole 3-3, a sensor 3-4, a nut 3-5, a supporting block 3-6 and a mounting hole 3-7; the device comprises a balance part 4, a support 4-1, an X-direction slide rail 4-2, an L-shaped mounting plate 4-3, a connecting block 4-4, an X-direction slide block 4-5, a Z-direction slide rail 4-6, a Z-direction slide block 4-7, a Y-direction slide rail 4-8, a moving handle 4-9 and a fixing plate 4-10.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

As shown in fig. 1: the present invention is composed of a positioning and clamping part 1, a positioning and detecting part 3 and a balancing part 4. Wherein:

the structure of the positioning and clamping part 1 is shown in fig. 2: the pneumatic thimble machine is composed of a pneumatic thimble machine 1-1, a motor 1-4 fixed on a machine base 1-5 and a thimble shaft 1-8 connected with the motor shaft through a coupler 1-3, wherein a movable centre 1-2 of the pneumatic thimble machine 1-1 is coaxial with the thimble shaft 1-8. The specific structure of the pneumatic thimble machine 1-1 is a mature structure, which is not described in detail in this embodiment.

The structure of the positioning detection part 3 is shown in FIGS. 3-4: the device comprises an omega-shaped clamping seat 3-1, two supporting blocks 3-6 which are respectively and obliquely fixed at the opening position of the clamping seat through a stud and a nut 3-5, three groups of mounting holes 3-7 (each group is provided with two mounting holes 3-7) arranged at the top of the clamping seat 3-1, and two sensors 3-4 fixed in the mounting holes 3-7. The two bearing blocks 3-6 form an inverted V-shaped block positioning structure attached to the crankshaft journal, and one end of the clamping seat 3-1 is provided with a square hole 3-3.

The structure of the balance part 4 is shown in fig. 5: the X-direction sliding rail type X-direction sliding device comprises two X-direction sliding rails 4-2 fixed on a support 4-1 through fixing plates 4-10, X-direction sliding blocks 4-5 respectively installed on the two X-direction sliding rails 4-2, L-shaped installation plates 4-3 fixed on the two X-direction sliding blocks 4-5, Y-direction sliding rails 4-8 vertically fixed on the L-shaped installation plates, Y-direction sliding blocks (not marked in the figure) installed on the Y-direction sliding rails, connecting blocks 4-4 fixed on the Y-direction sliding blocks, Z-direction sliding blocks 4-7 fixed on the connecting blocks, and Z-direction sliding rails 4-6 horizontally installed on the Z-direction sliding blocks. The Y-direction slide rail 4-8 and the Z-direction slide rail 4-6 form a cross-shaped structure, and one end of the Z-direction slide rail 4-6 is inserted into and fixed in the square hole 3-3.

In order to enhance the rigidity of the positioning and clamping part 1 and improve the rotation precision of the crankshaft 2, supporting seats 1-6 are fixed below the thimble shafts 1-8; the thimble shafts 1-8 are fixed with bearings 1-7 which are fixed on the supporting seats 1-6 through bearing blocks (not shown in the figure).

In order to facilitate the clamping and positioning of the crankshaft 2, two V-shaped supporting plates 1-9 for pre-positioning are fixed between the supporting seat 1-6 and the pneumatic thimble machine 1-1.

In order to keep the balance of the clamping seat 3-1 and move the positioning detection part 3 to the detection position of the next shaft neck along the X direction, a counterweight handle 3-2 is fixed at the other end of the clamping seat 3-1.

In order to move the balance part 4 along the X direction with the positioning detection part 3 to the detection position of the next shaft neck, a moving handle 4-9 is fixed on the L-shaped mounting plate 4-3.

The working principle is as follows:

the method comprises the steps of supporting a crankshaft 2 to be measured on two V-shaped bearing plates 1-9, adjusting the crankshaft 2 to enable a center hole at the right end of the crankshaft to be approximately aligned with a thimble shaft 1-8 and a center hole at the left end of the crankshaft to be approximately aligned with a movable centre 1-2 of a pneumatic thimble machine 1-1, starting the pneumatic thimble machine 1-1 to tightly push the crankshaft (at the moment, the crankshaft 2 is lifted upwards to be separated from the V-shaped bearing plates 1-9, and finishing workpiece positioning.

The detection part 3 is horizontally positioned on the shaft neck of the crankshaft 2 through the two bearing blocks 3-6 which are arranged in a splayed shape, so that the two bearing blocks 3-6 are ensured to be uniformly attached to the shaft neck of the crankshaft 2, the contact of each sensor 3-4 is ensured to be uniformly contacted with the shaft neck of the crankshaft 2, and the positioning of the detection part 3 is completed.

When the motor 1-4 drives the crankshaft 2 to rotate through the thimble shaft 1-8, the sensor 3-4 can send the acquired roundness jump value to a PLC (programmable logic controller) (not shown in the figure), the PLC automatically calculates, compares and the like the data, and then the detection result is displayed through display frequency.

When another shaft neck needs to be detected, the counterweight handle 3-2 is utilized to lift the clamping seat 3-1 upwards to be separated from the crankshaft 2, the movable handle 4-9 is utilized to move the Y-direction sliding rail 4-8, the Z-direction sliding rail 4-6 and the clamping seat 3-1 to the position of the next shaft neck to be detected through the L-shaped mounting plate 4-3, and then the operation is repeated.

Claims

1. A crankshaft detection device comprises a positioning clamping part, a detection part and a balance part; the method is characterized in that:

the positioning and clamping part (1) consists of a pneumatic thimble machine (1-1), a motor (1-4) fixed on the machine base (1-5) and a thimble shaft (1-8) connected with the motor shaft through a coupler (1-3);

the detection part (3) is composed of an omega-shaped clamping seat (3-1), two supporting blocks (3-6) which are obliquely fixed at the opening position of the clamping seat and two sensors (3-4) which are fixed at the top of the clamping seat (3-1), and one end of the clamping seat (3-1) is provided with a square hole (3-3);

the balance part (4) is composed of two X-direction slide rails (4-2) fixed on a support (4-1) through fixing plates (4-10), an L-shaped mounting plate (4-3) installed on the two X-direction slide rails (4-2) through X-direction sliders (4-5), Y-direction slide rails (4-8) vertically fixed on the L-shaped mounting plate (4-3), a connecting block installed on the Y-direction slide rails through the Y-direction sliders, and Z-direction slide rails (4-6) horizontally installed on the connecting block through the Z-direction sliders (4-7), wherein one ends of the Z-direction slide rails are inserted into and fixed in square holes (3-3).

2. The crankshaft detecting device according to claim 1, characterized in that: a supporting seat (1-6) is arranged below the thimble shaft (1-8), a bearing (1-7) is fixed on the thimble shaft (1-8), and the bearing is fixed on the supporting seat (1-6) through a bearing seat.

3. The crankshaft detecting device according to claim 1, characterized in that: two V-shaped supporting plates (1-9) are arranged between the supporting seat (1-6) and the pneumatic thimble machine (1-1).

4. The crankshaft detecting device according to claim 1, characterized in that: the other end of the clamping seat (3-1) is fixed with a counterweight handle (3-2).

5. The crankshaft detecting device according to claim 1, characterized in that: a movable handle (4-9) is fixed on the L-shaped mounting plate (4-3).