Piston connecting rod detection device

Abstract

The utility model provides a piston connecting rod detection device, and relates to the technical field of piston connecting rod detection. The piston connecting rod detection device comprises a workbench, a clamp, a positioning support block, a hexagonal hole detection assembly, a circular hole diameter detection assembly and an outer diameter detection assembly. The device can automatically detect the shape and depth of a hexagonal hole of a connecting rod, the aperture of a circular hole and the outer diameter of a specified position, is high in automation degree, high in measurement precision, high in efficiency, safe and reliable, simple to operate, compact in structure, complete in function and low in cost, realizes accurate and effective online measurement in a machining operation area range, greatly reduces manual operation, and improves the working efficiency. And the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of piston connecting rod detection, in particular to a piston connecting rod detection device. Background Art

[0002] In the modern automobile parts manufacturing and processing industry, CNC machining centers play an increasingly important role. The rough materials go from handling and clamping to rough machining, and then to fine machining into semi-finished products. In this process, they need to go through one or more process methods such as milling, drilling, reaming, and thread extrusion. The processing equipment needs to have high positioning accuracy and processing accuracy. The dimensional error in the processing process needs to be reduced through the dimensional compensation function.

[0003] In the traditional processing of piston connecting rods, it is necessary to manually use measuring tools to measure the processing dimensions regularly and quantitatively, calculate the compensation value and manually input it into the control system of the processing equipment, or manually use the inspection tool to qualitatively confirm the processing part to inspect the piston connecting rod. This manual measurement method affects the production cycle, has low production efficiency, and is likely to cause human calculation or input errors. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a piston connecting rod detection device, which solves the problems of low efficiency and high error rate in piston connecting rod detection.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A piston connecting rod detection device, the piston connecting rod detection device comprising: a workbench, a fixture, a positioning support block, a hexagonal hole detection component, a circular hole aperture detection component and an outer diameter detection component;

[0007] The clamp is installed on the workbench to clamp the connecting rod;

[0008] The positioning support block is installed on the workbench through the first cylinder, and the first cylinder drives the positioning support block to rise and fall. During the connecting rod clamping process, the positioning support block rises and the tail end of the connecting rod contacts the positioning support block; after the connecting rod clamping is completed, the positioning support block is lowered;

[0009] The hexagonal hole detection assembly is installed on the head side of the workbench, and includes: a second cylinder, a stepper motor and a hexagonal checker;

[0010] The second cylinder drives the stepper motor to move axially, and the hexagonal gauge is installed on the output shaft of the stepper motor;

[0011] The circular hole diameter detection assembly is installed on the rear side of the workbench, and includes: a third cylinder and a conical check fixture;

[0012] The third cylinder drives the conical gauge to move axially;

[0013] The outer diameter detection assembly includes: two contact digital sensors;

[0014] The two contact type digital sensors are respectively installed on the left and right sides of the workbench through the left and right fourth cylinders. The left and right fourth cylinders drive the two contact type digital sensors to move toward or away from each other.

[0015] Preferably, the workbench is tilted, sloping downward from the head side to the tail side.

[0016] Preferably, the clamp comprises: a lower clamp block, an upper clamp block and a clamping cylinder;

[0017] The lower clamping block and the clamping cylinder are mounted on the workbench;

[0018] The output shaft of the clamping cylinder is connected to the upper clamping block and is used to drive the upper clamping block to rise and fall and rotate around the output shaft.

[0019] Preferably, the clamps are provided in two groups, an upper group and a lower group, and the lower clamps are directly mounted on the workbench.

[0020] Preferably, the table top of the workbench is provided with an axially extending guide rail;

[0021] The hexagonal hole detection component and the outer diameter detection component are both slidably connected to the guide rail.

[0022] Preferably, the hexagonal hole detection assembly is matched with a first servo motor, and the first servo motor drives the hexagonal hole detection assembly to slide along the guide rail.

[0023] Preferably, the outer diameter detection component is matched with a second servo motor, and the second servo motor drives the outer diameter detection component to slide along the guide rail.

[0024] Preferably, the upper fixture is slidably connected to the guide rail;

[0025] The upper fixture is connected to the hexagonal hole detection assembly through a connecting rod.

[0026] Preferably, the outer diameter detection components are provided in multiple groups to detect the outer diameters of the connecting rod at multiple locations.

[0027] Preferably, a milling surface detection component is provided on the tail side of the stepping motor;

[0028] The milling surface detection component includes: a tooling block and an air pressure sensor;

[0029] The air pressure sensor is arranged inside the tooling block, and the air outlet of the air pressure sensor passes through the tooling block and contacts the part to be detected of the connecting rod.

[0030] The utility model provides a piston connecting rod detection device. Compared with the prior art, it has the following beneficial effects:

[0031] In the utility model, the piston connecting rod detection device comprises: a workbench, a clamp, a positioning support block, a hexagonal hole detection component, a circular hole diameter detection component and an outer diameter detection component; it can automatically detect the shape and depth of the hexagonal hole of the connecting rod, the circular hole diameter and the outer diameter of the specified position, has a high degree of automation, high measurement accuracy, high efficiency, safety and reliability, simple operation, compact structure, complete functions, low cost, realizes accurate and effective online measurement within the machining operation area, greatly reduces manual operation, and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a front view of the piston connecting rod detection device in the embodiment of the utility model;

[0034] Figure 2 This is an axonometric diagram of the piston connecting rod detection device in the embodiment of the utility model;

[0035] Figure 3 for Figure 1 A in the enlarged view;

[0036] Figure 4 for Figure 2 The enlarged view of point B in the figure;

[0037] Figure 5 for Figure 3 The enlarged view of point C in the figure;

[0038] Figure 6 This is a schematic diagram of the assembly of the piston connecting rod detection device and the connecting rod in the embodiment of the utility model;

[0039] The reference numerals in the figure are set as: workbench 10, guide rail 11, positioning support block 20, first cylinder 21, hexagonal hole detection assembly 30, second cylinder 31, stepper motor 32, hexagonal gauge 33, first servo motor 34, circular hole aperture detection assembly 40, third cylinder 41, conical gauge 42, contact digital sensor 50, fourth cylinder 51, second servo motor 52, lower clamping block 60, upper clamping block 61, clamping cylinder 62, connecting rod 63, tooling block 70, air outlet 71. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] The embodiment of the present application solves the problems of low efficiency and high error rate in piston connecting rod detection by providing a piston connecting rod detection device.

[0042] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0043] In the embodiment of the utility model, the piston connecting rod detection device includes: a workbench, a clamp, a positioning support block, a hexagonal hole detection component, a round hole diameter detection component and an outer diameter detection component; it can automatically detect the shape and depth of the hexagonal hole, the round hole diameter and the outer diameter of the specified position of the connecting rod, with a high degree of automation, high measurement accuracy, high efficiency, safety and reliability, simple operation, compact structure, complete functions, low cost, and realizes accurate and effective online measurement within the machining operation area, and greatly reduces manual operation and reduces labor costs.

[0044] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Example:

[0046] like Figure 1 to Figure 6 As shown, the utility model provides a piston connecting rod detection device, which includes: a workbench 10, a fixture, a positioning support block 20, a hexagonal hole detection component 30, a circular hole aperture detection component 40 and an outer diameter detection component;

[0047] The clamp is installed on the workbench 10 for clamping the connecting rod;

[0048] The positioning support block 20 is installed on the workbench 10 through the first cylinder 21. The first cylinder 21 drives the positioning support block 20 to rise and fall. During the connecting rod clamping process, the positioning support block 20 rises, and the tail end of the connecting rod contacts the positioning support block 20 to achieve the positioning of the connecting rod; after the connecting rod clamping is completed, the positioning support block 20 is lowered to avoid interference with the detection;

[0049] The hexagonal hole detection assembly 30 is installed on the head side of the workbench 10, and includes: a second cylinder 31, a stepper motor 32 and a hexagonal checker 33;

[0050] The second cylinder 31 drives the stepper motor 32 to move axially, and the hexagonal gauge 33 is installed on the output shaft of the stepper motor 32;

[0051] The working principle of the hexagonal hole detection component 30 is as follows: the second cylinder 31 drives the stepper motor 32 to approach the connecting rod head end, and the stepper motor 32 drives the hexagonal checker 33 to rotate. When the hexagonal checker 33 and the hexagonal hole of the connecting rod head end are aligned, the hexagonal checker 33 extends into the hexagonal hole. When the hexagonal checker 33 reaches the depth required, the hexagonal hole detection is qualified. When the hexagonal checker 33 cannot be inserted into the hexagonal hole or the depth is insufficient, the hexagonal hole detection is unqualified.

[0052] The circular hole diameter detection assembly 40 is installed at the rear side of the workbench 10, and includes: a third cylinder 41 and a conical gauge 42;

[0053] The third cylinder 41 drives the conical gauge 42 to move axially;

[0054] The working principle of the circular hole diameter detection component 40 is that the third cylinder 41 drives the conical gauge 42 to approach the tail end of the connecting rod, and the conical gauge 42 extends into the circular hole at the tail end of the connecting rod until the conical surface of the conical gauge 42 contacts the edge of the circular hole. At this time, the stroke distance of the third cylinder 41 and the conical surface angle of the conical gauge 42 can be calculated by the controller to obtain the circular hole diameter at the tail end of the connecting rod.

[0055] The outer diameter detection assembly includes: two contact digital sensors 50;

[0056] Two contact digital sensors 50 are respectively installed on the left and right sides of the workbench 10 through two left and right fourth cylinders 51. The left and right fourth cylinders 51 drive the two contact digital sensors 50 to move toward or away from each other.

[0057] The working principle of the outer diameter detection component is: the left and right fourth cylinders 51 drive the two contact digital sensors 50 to move toward each other along the radial direction of the connecting rod until the two contact digital sensors 50 are in contact with the outer wall of the measured part of the connecting rod. The digital signals obtained by the two contact digital sensors 50 can be calculated by the controller to obtain the outer diameter of the measured part of the connecting rod. The outer diameter detected by the outer diameter detection component can be either the thread outer diameter of the connecting rod or the circumferential outer diameter.

[0058] like Figure 2 As shown, the workbench 10 is tilted and tilted downward from the head side to the tail side, which is convenient for operators to operate, and the connecting rod automatically slides down when placed on the fixture, ensuring that the tail end of the connecting rod is in close contact with the positioning support block 20, thereby improving the positioning accuracy of the connecting rod and providing a good foundation for the subsequent circular hole aperture detection.

[0059] like Figure 3 , Figure 4As shown, the clamp comprises: a lower clamp block 60, an upper clamp block 61 and a clamping cylinder 62;

[0060] The lower clamping block 60 and the clamping cylinder 62 are installed on the workbench 10;

[0061] The output shaft of the clamping cylinder 62 is connected to the upper clamping block 61, and is used to drive the upper clamping block 61 to rise and fall and rotate around the output shaft, so as to achieve the clamping and releasing of the connecting rod by the clamp.

[0062] like Figure 1 to Figure 4 As shown, the clamps are provided in two groups, upper and lower, and the lower clamps are directly mounted on the workbench 10 .

[0063] like Figure 1 to Figure 4 As shown, the table top of the workbench 10 is provided with an axially extending guide rail 11;

[0064] The hexagonal hole detection assembly 30 and the outer diameter detection assembly are both slidably connected to the guide rail 11;

[0065] The hexagonal hole detection assembly 30 is matched with a first servo motor 34, and the first servo motor 34 drives the hexagonal hole detection assembly 30 to slide along the guide rail 11, so as to adjust the axial position of the hexagonal hole detection assembly 30; so that the piston connecting rod detection device can detect connecting rods of various length specifications;

[0066] The outer diameter detection assembly is matched with a second servo motor 52 . The second servo motor 52 drives the outer diameter detection assembly to slide along the guide rail 11 , so as to adjust the axial position of the second servo motor 52 .

[0067] like Figure 3 As shown, the upper fixture is slidably connected to the guide rail 11, that is, the upper fixture is installed on the workbench 10 through the slide rail 11;

[0068] The upper clamp is connected to the hexagonal hole detection assembly 30 via a connecting rod 63 , so that when the hexagonal hole detection assembly 30 slides along the guide rail 11 , the upper clamp slides along with it.

[0069] like Figure 1 to Figure 4 As shown, the outer diameter detection components are provided in multiple groups to detect the outer diameters of the connecting rod at multiple locations.

[0070] like Figure 5 As shown, a milling surface detection component is provided on the tail side of the stepping motor 32;

[0071] The milling surface detection assembly includes: a tooling block 70 and an air pressure sensor;

[0072] The air pressure sensor is arranged inside the tooling block 70 , and the air outlet hole 71 of the air pressure sensor passes through the tooling block 70 and contacts the part of the connecting rod to be detected.

[0073] That is, if the threaded rod at the head end of the connecting rod is processed with a milled surface, the milled surface is placed in contact with the air outlet 71. At this time, the air pressure value obtained by the air pressure sensor 70 is within the judgment range, and a signal is sent to the controller to indicate that the connecting rod is processed with a milled surface; if the threaded rod at the head end of the connecting rod is not processed with a milled surface, the air pressure value obtained by the air pressure sensor 70 is outside the judgment range, and a signal is sent to the controller to indicate that the connecting rod is not processed with a milled surface.

[0074] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0075] In the embodiment of the utility model, the piston connecting rod detection device includes: a workbench, a clamp, a positioning support block, a hexagonal hole detection component, a round hole diameter detection component and an outer diameter detection component; it can automatically detect the shape and depth of the hexagonal hole, the round hole diameter and the outer diameter of the specified position of the connecting rod, with a high degree of automation, high measurement accuracy, high efficiency, safety and reliability, simple operation, compact structure, complete functions, low cost, and realizes accurate and effective online measurement within the machining operation area, and greatly reduces manual operation and reduces labor costs.

[0076] In addition, the operation process of the piston connecting rod detection device is continuous and smooth. The entire cycle time is about 26 seconds, which meets the 46-second beat requirement of the process design, and the speed efficiency is improved by about 43%. At the same time, the automatic detection results are accurate, with an accuracy of up to 0.003 mm, which fully meets the product design dimension accuracy requirement of 0.01 mm, avoids errors that may be caused by manual inspection fixture measurements, and improves the measurement accuracy by about 4%.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A piston connecting rod detection device, characterized in that: The piston connecting rod detection device comprises: a workbench (10), a fixture, a positioning support block (20), a hexagonal hole detection component (30), a circular hole diameter detection component (40) and an outer diameter detection component; The clamp is installed on a workbench (10) and is used to clamp the connecting rod; The positioning support block (20) is installed on the workbench (10) through a first cylinder (21). The first cylinder (21) drives the positioning support block (20) to rise and fall. During the connecting rod clamping process, the positioning support block (20) rises and the rear end of the connecting rod contacts the positioning support block (20). After the connecting rod clamping is completed, the positioning support block (20) is lowered. The hexagonal hole detection assembly (30) is installed on the head side of the workbench (10), and comprises: a second cylinder (31), a stepping motor (32) and a hexagonal inspection tool (33); The second cylinder (31) drives the stepping motor (32) to move axially, and the hexagonal gauge (33) is installed on the output shaft of the stepping motor (32); The circular hole diameter detection assembly (40) is installed on the rear side of the workbench (10), and comprises: a third cylinder (41) and a conical inspection tool (42); The third cylinder (41) drives the conical gauge (42) to move axially; The outer diameter detection component comprises: two contact-type digital sensors (50); The two contact digital sensors (50) are respectively installed on the left and right sides of the workbench (10) through the left and right fourth cylinders (51), and the left and right fourth cylinders (51) drive the two contact digital sensors (50) to move towards or away from each other.

2. The piston connecting rod detection device according to claim 1, characterized in that: The workbench (10) is arranged to be inclined, and is inclined downward from the head side to the tail side.

3. The piston connecting rod detection device according to claim 1, characterized in that: The clamp comprises: a lower clamp block (60), an upper clamp block (61) and a clamping cylinder (62); The lower clamping block (60) and the clamping cylinder (62) are installed on the workbench (10); The output shaft of the clamping cylinder (62) is connected to the upper clamping block (61) and is used to drive the upper clamping block (61) to rise and fall and rotate around the output shaft.

4. The piston connecting rod detection device according to claim 1, characterized in that: The clamps are provided in two groups, an upper group and a lower group, and the lower clamp is directly mounted on the workbench (10).

5. The piston connecting rod detection device according to claim 4, characterized in that: The table top of the workbench (10) is provided with an axially extending guide rail (11); The hexagonal hole detection component (30) and the outer diameter detection component are both slidably connected to the guide rail (11).

6. The piston connecting rod detection device according to claim 5, characterized in that: The hexagonal hole detection component (30) is matched with a first servo motor (34), and the first servo motor (34) drives the hexagonal hole detection component (30) to slide along the guide rail (11).

7. The piston connecting rod detection device according to claim 5, characterized in that: The outer diameter detection component is matched with a second servo motor (52), and the second servo motor (52) drives the outer diameter detection component to slide along the guide rail (11).

8. The piston connecting rod detection device according to claim 5, characterized in that: The guide rail (11) is slidably connected to the upper clamp; The upper clamp is connected to the hexagonal hole detection assembly (30) via a connecting rod (63).

9. The piston connecting rod detection device according to claim 1, characterized in that: The outer diameter detection components are provided in multiple groups to detect the outer diameters of the connecting rod at multiple locations.

10. The piston connecting rod detection device according to any one of claims 1 to 9, characterized in that: A milling surface detection component is arranged on the tail side of the stepping motor (32); The milling surface detection component comprises: a tooling block (70) and an air pressure sensor; The air pressure sensor is arranged inside the tooling block (70), and the air outlet hole (71) of the air pressure sensor passes through the tooling block (70) and contacts the part of the connecting rod to be detected.

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