Deformation detection device for thin-wall machining parts

Abstract

The utility model discloses a thin-wall type machining part deformation detection device, and belongs to the technical field of thin-wall type part deformation detection.The deformation detection device comprises a workbench and a fixing base arranged on the workbench, a thin-wall pipe part is arranged at the upper end of the fixing base, and a mounting plate is mounted at one end of the workbench; a connecting rod is rotationally connected to the mounting plate, a detection mechanism is arranged at the end, away from the mounting plate, of the connecting rod, and the detection mechanism comprises a sleeve seat detachably mounted on the connecting rod and a plurality of mounting frames distributed on the sleeve seat in an annular array; the first servo motor is started to enable the thin-walled tube part arranged on the fixed seat to approach to the detection mechanism, and deformation detection is performed on the inner wall of the thin-walled tube part through cooperation of each detection wheel and a displacement sensor in the detection mechanism, so that the detection device can detect the inner wall of the thin-walled tube part; and the detection device can be adapted to the inner walls of the circular pipes with different specifications by utilizing the matching of the connecting seat and the mounting frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deformation detection of thin-walled parts, in particular to a deformation detection device for thin-walled machined parts. BACKGROUND

[0002] Thin-walled machined parts are widely used in the fields of aerospace, automobiles, precision instruments, etc. Since these tubular parts usually have a thin wall thickness and high precision requirements, they are easily affected by various factors such as cutting force, temperature change, material properties, etc. during machining, resulting in deformation. These deformations not only affect the machining quality, but also may cause dimensional deviations of the parts, and in severe cases may even cause the parts to be scrapped.

[0003] Traditional deformation detection methods for thin-walled parts mainly include visual inspection, contact measurement and non-contact measurement, etc. However, these methods have certain limitations. When visually inspecting the inner wall of a tubular thin-walled workpiece, the inner wall of the tube cannot be directly observed, making it difficult to achieve high-precision and global-range deformation monitoring. Although contact measurement can provide high precision, it may cause damage to the surface of the part.

[0004] Therefore, the present application provides a deformation detection device for thin-walled machined parts to solve the above problems. CONTENT OF THE INVENTION

[0005] The present application provides a deformation detection device for thin-walled machined parts, which aims to solve the problem of the existing tubular thin-walled part detection device having certain limitations during detection as mentioned in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a deformation detection device for thin-walled machined parts, comprising a workbench and a fixing seat arranged on the workbench, an upper end of the fixing seat being provided with a thin-walled pipe part, one end of the workbench being provided with a mounting plate, the mounting plate being rotatably connected with a connecting rod, a distal end of the connecting rod being provided with a detection mechanism;

[0007] The detection mechanism comprises a sleeve seat detachably mounted on the connecting rod and a plurality of mounting racks arranged in an annular array on the sleeve seat, each mounting rack being provided with a connecting seat, the connecting seat being slidably mounted with a positioning seat, the positioning seat being rotatably connected with a detection wheel, the connecting seat being provided with a displacement sensor and a spring sleeved on the displacement sensor, the surface of the detection wheel being in contact with the inner wall of the thin-walled pipe part, each detection wheel forming a contact-type rotary rolling along the inner wall of the thin-walled pipe part, if the inner wall of the thin-walled pipe part is deformed, the positioning seat is extruded to change the position, and the displacement sensor transmits the changed distance to the computer.

[0008] Preferably, the base of the displacement sensor is detachably connected with the inner wall bottom of the connecting seat, and the upper end of the spring is fixedly connected with the lower end of the positioning seat.

[0009] Preferably, a plurality of limiting convex rods are equidistantly arranged in the interior of the connecting seat, and a plurality of limiting grooves corresponding to the limiting convex rods are formed in the positioning seat. When the positioning seat is subjected to longitudinal displacement due to the change of the deformation of the inner wall of the thin-walled pipe part, the limiting convex rods can prevent the positioning seat from tilting in a single direction by limiting the limiting grooves.

[0010] Preferably, the connecting seat is movably inserted into the mounting frame, and a through hole is formed in the connecting seat, and the through hole of the connecting seat is fixed by a bolt with the mounting frame.

[0011] Preferably, a screw rod is rotatably connected in the interior of the workbench, a positioning rod is fixedly connected to one end of the screw rod in the interior of the workbench, a base is fixedly connected to the lower end of the fixing seat, the base is threadedly sleeved with the screw rod, and the base is movably sleeved with the positioning rod. One end of the workbench away from the mounting plate is provided with a first servo motor, and the output end of the first servo motor is fixedly connected with one end of the screw rod.

[0012] Preferably, a fixing frame is arranged on the fixing seat, a plurality of groups of fixing holes are symmetrically formed in the fixing seat, a threaded rod is threadedly inserted into the fixing frame, and a pin rod for connecting the fixing seat is symmetrically arranged on the fixing frame.

[0013] The deformation detection device is characterized in that one end of the connecting rod is connected with the output end of the second servo motor arranged on the mounting plate. When the inner wall of the thin-walled pipe part needs to be detected, the thin-walled pipe part is first placed on the upper end of the fixing seat, the second servo motor is started to rotate with the detection mechanism, the first servo motor is started to move the thin-walled pipe part on the fixing seat towards the detection mechanism, and the detection mechanism rotates in the inner wall of the thin-walled pipe part. The deformation of the inner wall of the thin-walled pipe part is detected by each detection wheel in the detection mechanism and the displacement sensor. According to the parameter change transmitted by the displacement sensor, the deformation of the inner wall of the part can be more intuitively detected. Compared with the traditional detection method, the detection device can detect the inner wall of the tubular part, and the detection device can be used for adapting to the inner wall of the pipe of different specifications by cooperating the connecting seat with the mounting frame. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of a thin-walled mechanical machining part deformation detection device;

[0015] Figure 2 It is a structural schematic view of a workbench;

[0016] Figure 3 This is a schematic diagram of the socket structure;

[0017] Figure 4 This is a structural schematic diagram of the cross-section of the connector.

[0018] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the picture:

[0020] 1. Worktable; 11. Positioning rod; 12. Lead screw; 13. First servo motor; 2. Mounting plate; 21. Second servo motor; 22. Connecting rod; 3. Fixed seat; 31. Fixing hole; 32. Fixing frame; 33. Threaded rod; 34. Pin; 35. Base; 4. Thin-walled tube part; 5. Detection mechanism; 51. Sleeve; 52. Mounting frame; 53. Connecting seat; 54. Detection wheel; 55. Positioning seat; 56. Limiting protrusion; 57. Spring; 58. Limiting groove; 59. Displacement sensor. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] This embodiment provides a deformation detection device for thin-walled machined parts, such as... Figures 1-4 As shown, the deformation detection device includes a workbench 1 and a fixed seat 3 set on the workbench 1. A thin-walled tube part 4 is set on the upper end of the fixed seat 3. A mounting plate 2 is installed on one end of the workbench 1. A connecting rod 22 is rotatably connected to the mounting plate 2. A detection mechanism 5 is set on the end of the connecting rod 22 away from the mounting plate 2.

[0023] The detection mechanism 5 includes a sleeve 51 detachably mounted on the connecting rod 22 and several mounting brackets 52 arranged in a ring array on the sleeve 51. Each mounting bracket 52 is provided with a connecting seat 53. A positioning seat 55 is slidably mounted on the connecting seat 53. A detection wheel 54 is rotatably connected to the positioning seat 55. A displacement sensor 59 and a spring 57 sleeved on the displacement sensor 59 are provided inside the connecting seat 53. The base of the displacement sensor 59 is detachably connected to the bottom of the inner wall of the connecting seat 53. The upper end of the spring 57 is fixedly connected to the lower end of the positioning seat 55.

[0024] Specifically, the sleeve 51 is a round plate and can be detachably sleeved on the connecting rod 22, and can be detached at any time in the later period to maintain the electronic equipment in the detection mechanism 5. The positioning seat 55 is longitudinally limited and slides with the limiting convex rods 56 in the connecting seat 53 through the limiting grooves 58. The detection wheels 54 on the positioning seat 55 are put into the inner wall of the thin-walled pipe part 4. When the connecting rod 22 rotates, the surface of the detection wheel 54 contacts the inner wall of the thin-walled pipe part 4. Each detection wheel 54 forms a contact type rotary rolling along the inner wall of the thin-walled pipe part 4. If the inner wall of the thin-walled pipe part 4 is deformed, the positioning seat 55 is extruded and the position is changed. The displacement sensor 59 transmits the changed distance to the computer. The displacement sensor 59 and the computer output real-time transmission, and wireless connection transmission is adopted.

[0025] A plurality of limiting convex rods 56 are equidistantly arranged in the connecting seat 53. A plurality of limiting grooves 58 corresponding to the limiting convex rods 56 are arranged on the positioning seat 55. The connecting seat 53 is movably inserted with the mounting frame 52. A through hole is arranged on the connecting seat 53. The through hole of the connecting seat 53 is fixed with the mounting frame 52 by bolts.

[0026] More specifically, the limiting convex rods 56 in the connecting seat 53 are adapted to the limiting grooves 58 on the positioning seat 55. When the positioning seat 55 is longitudinally displaced due to the deformation of the inner wall of the thin-walled pipe part 4, the limiting convex rods 56 can prevent the positioning seat 55 from tilting in a single direction by limiting the limiting grooves 58. The connecting seat 53 and the mounting frame 52 are movably inserted and fixed by bolts and the through hole of the connecting seat 53. The height of the detection wheel 54 can be adjusted to adapt to different specifications of the circular pipe-shaped thin-walled part.

[0027] The workbench 1 is rotatably connected with a lead screw 12. One end of the lead screw 12 is fixedly connected with a positioning rod 11 inside the workbench 1. The lower end of the fixed seat 3 is fixedly connected with a base 35. The base 35 is threadedly sleeved with the lead screw 12. The base 35 is movably sleeved with the positioning rod 11. The end of the workbench 1 away from the mounting plate 2 is provided with a first servo motor 13. The output end of the first servo motor 13 is fixedly connected with one end of the lead screw 12. The fixed seat 3 is provided with a fixed frame 32. A plurality of groups of fixed holes 31 are symmetrically arranged on the fixed seat 3. Threaded rods 33 are threadedly inserted through the fixed frame 32. The fixed frame 32 is symmetrically provided with pin rods 34 connected with the fixed seat 3.

[0028] It should be noted that the fixing frame 32 on the fixing seat 3 mainly plays a positioning role when detecting the thin-walled pipe part 4, avoiding the shaking of the thin-walled pipe part 4 caused by the contact between the detection wheel 54 and the inner wall of the thin-walled pipe part 4 when the detection mechanism 5 rotates, thereby affecting the detection result. The base 35 can move the thin-walled pipe part 4 above the fixing seat 3 to the detection mechanism 5 through the rotation of the lead screw 12, so as to make the inner wall of the thin-walled pipe part 4 pass through the detection of the detection mechanism 5 as a whole.

[0029] In use, by setting the mounting plate 2 on the workbench 1, connecting one end of the connecting rod 22 with the output end of the second servo motor 21 arranged on the mounting plate 2, when the inner wall of the thin-walled part of the circular pipe needs to be detected, first place the thin-walled pipe part 4 on the upper end of the fixing seat 3, start the second servo motor 21 to rotate with the detection mechanism 5, at the same time, start the first servo motor 13 to move the thin-walled pipe part 4 arranged on the fixing seat 3 to the detection mechanism 5, and rotate in the inner wall of the thin-walled pipe part 4 by using the detection mechanism 5, rely on the cooperation between each detection wheel 54 and displacement sensor 59 in the detection mechanism 5 to detect the deformation of the inner wall, compared with the traditional detection method, the detection device can detect the inner wall of the tubular part, and the detection device can adapt to the inner wall of different specifications of circular pipes by using the cooperation of the connecting seat 53 and the mounting frame 52.

[0030] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A thin-walled mechanical part deformation detection device, comprising a workbench (1) and a fixed seat (3) arranged on the workbench (1), the upper end of the fixed seat (3) is provided with a thin-walled pipe part (4), one end of the workbench (1) is provided with a mounting plate (2), the mounting plate (2) is rotatably connected with a connecting rod (22), and the end of the connecting rod (22) away from the mounting plate (2) is provided with a detection mechanism (5). characterized in that The detection mechanism (5) comprises a sleeve seat (51) detachably arranged on the connecting rod (22) and a plurality of mounting racks (52) arranged in an annular array on the sleeve seat (51), the mounting rack (52) is provided with a connecting seat (53), the connecting seat (53) is slidably connected with a positioning seat (55), the positioning seat (55) is rotatably connected with a detection wheel (54), and the inside of the connecting seat (53) is provided with a displacement sensor (59) and a spring (57) sleeved on the displacement sensor (59).

2. The apparatus for detecting deformation of thin-walled mechanical parts according to claim 1, characterized in that: The base of the displacement sensor (59) is detachably connected with the inner wall bottom of the connecting seat (53), and the upper end of the spring (57) is fixedly connected with the lower end of the positioning seat (55).

3. The apparatus for detecting deformation of thin-walled machined parts according to claim 2, characterized in that: A plurality of limiting convex rods (56) are equidistantly arranged in the connecting seat (53), and a plurality of limiting grooves (58) corresponding to the limiting convex rods (56) are formed in the positioning seat (55).

4. The apparatus for detecting deformation of thin-walled machined parts according to claim 3, characterized in that: The connecting seat (53) is movably inserted with the mounting rack (52), a through hole is formed in the connecting seat (53), and the through hole of the connecting seat (53) is fixed by bolts with the mounting rack (52).

5. The apparatus for detecting deformation of thin-walled machined parts according to claim 1, characterized in that: A lead screw (12) is rotatably connected in the workbench (1), a positioning rod (11) is fixedly connected to one end of the workbench (1) opposite to the lead screw (12), a base (35) is fixedly connected to the lower end of the fixed seat (3), the base (35) is threadedly sleeved with the lead screw (12), and the base (35) is movably sleeved with the positioning rod (11), wherein a first servo motor (13) is arranged at the end of the workbench (1) away from the mounting plate (2), and the output end of the first servo motor (13) is fixedly connected with one end of the lead screw (12).

6. The apparatus for detecting deformation of thin-walled machined parts according to claim 5, characterized in that: A fixed frame (32) is arranged on the fixed seat (3), a plurality of fixed holes (31) are symmetrically formed on the fixed seat (3), a threaded rod (33) is threadedly inserted through the fixed frame (32), and the fixed frame (32) is symmetrically provided with a pin rod (34) connected with the fixed seat (3).

Images