A screw thread detection machine

Abstract

The present invention proposes a screw thread detection machine, including a linear module, a first servo motor, a floating detection mechanism, a second servo motor, a telescopic buffer coupling mechanism, an automatic translation and deflection mechanism and a detection mechanism, wherein the first servo motor is arranged at the top of the linear module, and the floating detection mechanism is movably installed on one side of the linear module, and moves along the vertical direction of the linear module under the drive of the first servo motor, and the floating detection mechanism includes a second servo motor, a telescopic buffer coupling mechanism, an automatic translation and deflection mechanism and a detection mechanism arranged in sequence from top to bottom, and the automatic translation and deflection mechanism is rotatably installed on a bearing seat, and the second servo motor controls the rotation of the automatic translation and deflection mechanism through the telescopic buffer coupling mechanism, and the bottom of the automatic translation and deflection mechanism is installed with a detection mechanism. The detection machine of the device has a correction function, a high degree of automation, a fast detection speed and can save labor costs.

Description

[Technical field]

[0001] The invention relates to the technical field of detection devices, in particular to a screw thread detection machine. [Background technology]

[0002] The existing technology generally detects whether the screw thread is qualified by manual methods, that is, the inspector manually controls the thread gauge to detect the screw thread; among them, the traditional manual detection method of screw thread has many defects, such as: the detection speed is slow, the inspector needs to manually screw in the thread gauge to determine whether the screw thread is qualified, which is time-consuming and laborious; the inspector can only judge the depth of the thread gauge by sense, and cannot ensure the uniformity of the inspection depth. In addition, some automatic detection devices of screw threads use servo motor detection, which has extremely high requirements for the positioning of the workpiece and does not have the function of automatic deviation correction. When the positioning of the workpiece is not accurate enough, it cannot be detected. Therefore, a screw thread detection machine is proposed. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a screw thread detection machine with a deviation correction function, a high degree of automation, a fast detection speed and the ability to save labor costs.

[0004] To achieve the above-mentioned objectives, the present invention proposes a screw thread detection machine, comprising a linear module, a first servo motor, a floating detection mechanism, a second servo motor, a telescopic buffer coupling mechanism, an automatic translation and swing mechanism and a detection mechanism, wherein the first servo motor is arranged at the top of the linear module, and the floating detection mechanism is movably installed on one side of the linear module, and moves along the vertical direction of the linear module under the drive of the first servo motor, the floating detection mechanism comprises a second servo motor, a telescopic buffer coupling mechanism, an automatic translation and swing mechanism and a detection mechanism arranged in sequence from top to bottom, the automatic translation and swing mechanism is rotatably installed on a bearing seat, the second servo motor controls the rotation of the automatic translation and swing mechanism through the telescopic buffer coupling mechanism, and the detection mechanism is installed at the bottom of the automatic translation and swing mechanism.

[0005] Preferably, the telescopic buffer coupling mechanism includes a first coupling, a second coupling and a third coupling, the first coupling and the third coupling are slidingly connected via two second couplings, the third coupling is provided with a through hole matching the second coupling, the second servo motor drives the third coupling to rotate via the first coupling, a second mounting hole is provided at the center of the third coupling, and the first deflection shaft of the automatic translation and deflection mechanism is installed in the second mounting hole.

[0006] Preferably, a first buffer spring is arranged between the first coupling shaft and the third coupling shaft, and a second buffer spring is arranged between the third coupling shaft and the upper end surface of the bearing seat. The first buffer spring and the second buffer spring are both sleeved on the outside of the first deflection shaft. When the first buffer spring and the second buffer spring are in a compressed state, the top of the first deflection shaft does not interfere with the first coupling shaft.

[0007] Preferably, the automatic translation and yaw mechanism includes a first yaw axis, a second yaw axis and a third yaw axis, two first yaw support frames are symmetrically provided at the bottom of the first yaw axis, the second yaw axis is movably installed between the two first yaw support frames through a plurality of first pins, two second yaw support frames are provided at the top of the third yaw axis, the second yaw axis is movably installed between the two second yaw support frames through a plurality of second pins, and the axial directions of the first pins and the second pins are perpendicular to each other.

[0008] Preferably, the second deflection shaft can be horizontally moved within a range of 1.5 mm along the axial direction of the first pin shaft or the second pin shaft, and the angular deflection range is 1.5°.

[0009] Preferably, the second deflection shaft is a cylindrical elongated strip with a square cross-section, the side length of the square being smaller than the distance between two first deflection support frames or two second deflection support frames, and the second deflection shaft is provided with a plurality of first pin holes matched with the first pin shaft, and a plurality of second pin holes matched with the second pin shaft, and the axial directions of the first pin holes and the second pin holes are perpendicular to each other.

[0010] Preferably, an automatic deflection correction spring is installed between the detection mechanism and the bearing seat, and the automatic deflection correction spring sleeve is arranged on the automatic translation deflection mechanism. The detection mechanism includes a fixed sleeve installed at the bottom of the automatic translation deflection mechanism, and an installation cavity is provided at the bottom of the fixed sleeve, and a threaded go / no-go gauge is installed in the installation cavity.

[0011] Preferably, two rolling bearings and one linear bearing are provided in the bearing seat, the rolling bearing is sleeved on the outside of the linear bearing, the first deflection axis of the automatic translation and deflection mechanism is installed in the linear bearing, and the axes of the first deflection axis, rolling bearing and linear bearing coincide with each other.

[0012] Preferably, a lifting seat is movably installed on the linear module. Under the drive of the first servo motor, the lifting seat moves along the vertical direction of the linear module. The side walls of the lifting seat are provided with a motor support seat and a bearing seat from top to bottom. The second servo motor is installed on the motor support seat.

[0013] Beneficial effects of the present invention: The present invention cooperates with a linear module, a first servo motor, a floating detection mechanism, a second servo motor, a telescopic buffer coupling mechanism, an automatic translation and deflection mechanism and a detection mechanism, wherein the floating detection mechanism is a flexible mechanism, and the automatic translation and deflection mechanism can automatically correct deviations. When the positioning of the workpiece is not precise enough, the automatic translation and deflection mechanism can automatically adjust the position of the detection mechanism to ensure that the thread gauge is coaxial with the workpiece below, thereby improving the detection accuracy.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of a screw thread detection machine of the present invention;

[0016] Figure 2 It is a schematic diagram of the internal structure of a screw thread detection machine of the present invention;

[0017] Figure 3 The invention discloses an exploded diagram of a telescopic buffer coupling mechanism, an automatic translation and deflection mechanism and a detection mechanism of a screw thread detection machine. [Specific implementation method]

[0018] See also Figures 1 to 3The present invention discloses a screw thread detection machine, comprising a linear module 1, a first servo motor 2, a floating detection mechanism 3, a second servo motor 4, a retractable buffer coupling mechanism 5, an automatic translation and deflection mechanism 6 and a detection mechanism 7, wherein the first servo motor 2 is arranged at the top of the linear module 1, and the floating detection mechanism 3 is movably installed on one side of the linear module 1, and moves in the vertical direction of the linear module 1 under the drive of the first servo motor 2, the floating detection mechanism 3 comprises a second servo motor 4, a retractable buffer coupling mechanism 5, an automatic translation and deflection mechanism 6 and a detection mechanism 7 which are arranged in sequence from top to bottom, and the automatic translation and deflection mechanism 6 is arranged at the top of the linear module 1, and the floating detection mechanism 3 is movably installed on one side of the linear module 1, and moves in the vertical direction of the linear module 1 under the drive of the first servo motor 2, and ... floating detection mechanism 3 is movably installed on one side of the linear module 1, and the floating detection mechanism 3 is movably installed on the one side of the linear module 1, and the floating detection mechanism 3 is movably installed on the one side of the linear module 1, and the floating detection mechanism 3 The dynamic translation and deflection mechanism 6 is rotatably installed on the bearing seat 12, and the second servo motor 4 controls the rotation of the automatic translation and deflection mechanism 6 through the telescopic buffer coupling mechanism 5. A detection mechanism 7 is installed at the bottom of the automatic translation and deflection mechanism 6, and a deflection automatic correction spring 600 is installed between the detection mechanism 7 and the bearing seat 12. The deflection automatic correction spring 600 is sleeved on the automatic translation and deflection mechanism 6. The detection mechanism 7 includes a fixed sleeve 71 installed at the bottom of the automatic translation and deflection mechanism 6, and the bottom of the fixed sleeve 71 is provided with an installation cavity, and a threaded stop gauge 72 is installed in the installation cavity. The telescopic buffer coupling mechanism 5 includes a first coupling 51, a second coupling 52 and a third coupling 53. The first coupling 51 and the third coupling 53 are slidably connected through two second couplings 52. The third coupling 53 is provided with a through hole matched with the second coupling 52. The second servo motor 4 drives the third coupling 53 to rotate through the first coupling 51. The center of the third coupling 53 is provided with a second mounting hole. The first deflection shaft 61 of the automatic translation deflection mechanism 6 is installed in the second mounting hole. A first buffer spring 501 is provided between the first coupling 51 and the third coupling 53. A second buffer spring 502 is provided between the third coupling 53 and the upper end surface of the bearing seat 12. The first buffer spring 501 and the second buffer spring 502 are both sleeved on the outside of the first deflection shaft 61. When the first buffer spring 501 and the second buffer spring 502 are in a compressed state, the top of the first deflection shaft 61 does not interfere with the first coupling 51. The automatic translation and yaw mechanism 6 includes a first yaw axis 61, a second yaw axis 62 and a third yaw axis 63. Two first yaw support frames 611 are symmetrically provided at the bottom of the first yaw axis 61. The second yaw axis 62 is movably installed between the two first yaw support frames 612 through a plurality of first pins 601. Two second yaw support frames 631 are provided at the top of the third yaw axis 63. The second yaw axis 62 is movably installed between the two second yaw support frames 631 through a plurality of second pins 602. The axial directions of the first pins 601 and the second pins 602 are perpendicular to each other.

[0019] Furthermore, the second deflection shaft 62 can be horizontally moved within a range of 1.5 mm along the axis direction of the first pin 601 or the second pin 602, and the angular deflection range is 1.5°. The second deflection shaft 62 is a cylindrical long strip with a square cross-section. The side length of the square is less than the distance between the two first deflection support frames 612 or the two second deflection support frames 631. The second deflection shaft 62 is provided with a plurality of first pin holes adapted to the first pin 601, and a plurality of second pin holes adapted to the second pin 602. The axis directions of the first pin holes and the second pin holes are perpendicular to each other.

[0020] Furthermore, a lifting seat 11 is movably installed on the linear module 1. Driven by the first servo motor 2, the lifting seat 11 moves in the vertical direction of the linear module 1. The side walls of the lifting seat 11 are provided with a motor support seat 13 and a bearing seat 12 from top to bottom. The second servo motor 4 is installed on the motor support seat 13. Two rolling bearings 121 and a linear bearing 122 are provided in the bearing seat 12. The rolling bearing 121 is sleeved on the outside of the linear bearing 122. The first deflection shaft 61 of the automatic translation and deflection mechanism 6 is installed in the linear bearing 122. The axes of the first deflection shaft 61, the rolling bearing 121 and the linear bearing 122 coincide with each other.

[0021] Working process of the present invention:

[0022] The present invention provides a screw thread detection machine. During use, a first servo motor 2 can drive a floating detection mechanism 3 to move vertically downward along a linear module 1, and a second servo motor 4 can drive a detection mechanism 7 to screw into a threaded portion of a workpiece to detect the screw thread. The floating detection mechanism is a flexible mechanism. When the positioning of the workpiece is not accurate enough, the automatic translation and deflection mechanism 6 can automatically adjust the position of the detection mechanism to ensure that the thread gauge is coaxial with the workpiece below, thereby improving the detection accuracy and avoiding damage to the workpiece.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A screw thread detection machine, characterized in that: The invention comprises a linear module (1), a first servo motor (2), a floating detection mechanism (3), a second servo motor (4), a telescopic buffer coupling mechanism (5), an automatic translation and deflection mechanism (6) and a detection mechanism (7), wherein the first servo motor (2) is arranged at the top of the linear module (1), the floating detection mechanism (3) is movably mounted on one side of the linear module (1), and moves in the vertical direction of the linear module (1) under the drive of the first servo motor (2), the floating detection mechanism (3) comprises a second servo motor (4), a telescopic buffer coupling mechanism (5), an automatic translation and deflection mechanism (6) and a detection mechanism (7) which are arranged in sequence from top to bottom, and the automatic translation and deflection mechanism (6) is rotatably mounted on a bearing seat (12). The second servo motor (4) controls the rotation of the automatic translation and deflection mechanism (6) through the telescopic buffer coupling mechanism (5); a detection mechanism (7) is installed at the bottom of the automatic translation and deflection mechanism (6); the telescopic buffer coupling mechanism (5) comprises a first coupling shaft (51), a second coupling shaft (52) and a third coupling shaft (53); the first coupling shaft (51) and the third coupling shaft (53) are slidably connected via two second coupling shafts (52); a through hole matching the second coupling shaft (52) is provided on the third coupling shaft (53); the second servo motor (4) drives the third coupling shaft (53) to rotate through the first coupling shaft (51); a second mounting hole is provided at the center of the third coupling shaft (53); the automatic translation and deflection mechanism (6) The first deflection shaft (61) is installed in the second installation hole; a first buffer spring (501) is arranged between the first coupling shaft (51) and the third coupling shaft (53); a second buffer spring (502) is arranged between the third coupling shaft (53) and the upper end surface of the bearing seat (12); the first buffer spring (501) and the second buffer spring (502) are both sleeved on the outside of the first deflection shaft (61); when the first buffer spring (501) and the second buffer spring (502) are in a compressed state, the top of the first deflection shaft (61) does not interfere with the first coupling shaft (51); the automatic translation deflection mechanism (6) comprises a first deflection shaft (61), a second deflection shaft (62) and a third deflection shaft (63); the first deflection shaft (61) Two first deflection support frames (611) are symmetrically arranged at the bottom of the shaft (61), the second deflection shaft (62) is movably mounted between the two first deflection support frames (612) via a plurality of first pins (601), and two second deflection support frames (631) are arranged at the top of the third deflection shaft (63), the second deflection shaft (62) is movably mounted between the two second deflection support frames (631) via a plurality of second pins (602), and the axial directions of the first pins (601) and the second pins (602) are perpendicular to each other; an automatic deflection correction spring (600) is installed between the detection mechanism (7) and the bearing seat (12), and the automatic deflection correction spring (600) is sleeved on the automatic translation deflection mechanism (6).

2. A screw thread detection machine as claimed in claim 1, characterized in that: The second deflection shaft (62) can be horizontally moved within a range of 1.5 mm along the axial direction of the first pin shaft (601) or the second pin shaft (602), and the angular deflection range is 1.5°.

3. A screw thread detection machine as claimed in claim 1, characterized in that: The second deflection shaft (62) is a cylindrical long strip having a square cross-section, wherein the side length of the square is smaller than the distance between the two first deflection support frames (612) or the two second deflection support frames (631). The second deflection shaft (62) is provided with a plurality of first pin holes matched with the first pin shaft (601), and a plurality of second pin holes matched with the second pin shaft (602), wherein the axial directions of the first pin holes and the second pin holes are perpendicular to each other.

4. A screw thread detection machine as claimed in claim 1, characterized in that: The detection mechanism (7) comprises a fixing sleeve (71) mounted on the bottom of the automatic translation and deflection mechanism (6); a mounting cavity is provided at the bottom of the fixing sleeve (71), and a threaded go / no-go gauge (72) is installed in the mounting cavity.

5. A screw thread detection machine as claimed in claim 1, characterized in that: Two rolling bearings (121) and a linear bearing (122) are arranged in the bearing seat (12); the rolling bearing (121) is sleeved on the outside of the linear bearing (122); the first deflection shaft (61) of the automatic translation deflection mechanism (6) is installed in the linear bearing (122); and the axes of the first deflection shaft (61), the rolling bearing (121) and the linear bearing (122) coincide with each other.

6. A screw thread detection machine as claimed in claim 1, characterized in that: A lifting seat (11) is movably mounted on the linear module (1). Driven by the first servo motor (2), the lifting seat (11) moves in the vertical direction of the linear module (1). The side walls of the lifting seat (11) are provided with a motor support seat (13) and a bearing seat (12) in sequence from top to bottom. The second servo motor (4) is mounted on the motor support seat (13).

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