A pressure foot normal calibration device

Abstract

The present invention discloses a pressure foot normal calibration device, which relates to the field of automated calibration technology. The device comprises a base plate, wherein the upper ends of the four corner points of the base plate are fixedly mounted with guide rail columns, the upper ends of the guide rail columns are fixedly mounted with a top plate, a pressure foot calibrator is provided in the middle portion between the base plate and the top plate, the pressure foot calibrator is connected to the guide rail columns via springs, a calibration platform is provided at the directly lower end of the pressure calibrator, the calibration platform is fixedly mounted on the upper end surface of the base plate, and a calibration rod is connected to the upper end of the pressure calibrator. The present invention designs two main calibration components, the pressure foot calibrator and the calibration platform, which are quickly calibrated through the cooperation of the calibration rod. The pressure foot calibrator is connected to the guide rail columns on all sides via springs and is in a suspended state. The calibration process is very simple, and the pressure foot normal can be calibrated with high precision and efficiency, making the pressure foot work more reliably. The overall structure is very compact, the cost is low, and the stability is very high.

Description

Technical Field

[0001] The present invention relates to the technical field of automated calibration, in particular to a pressure foot normal calibration device. Background Art

[0002] With the advancement of technology and the need for mobility, aircraft have become an indispensable means of transportation in our daily lives. As a key factor influencing aircraft safety and performance, automated assembly technology also faces high standards and requirements. Mechanical connections are predominant in the aircraft assembly process, which can lead to numerous hole-making challenges. Therefore, robotic precision hole-making technology has become an important research area. The normal orientation of the pressure foot at the robot's end directly determines the normal accuracy of the hole, making it essential to conduct calibration research on this pressure foot's normal orientation.

[0003] The present invention develops a pressure foot normal calibration device. Summary of the Invention

[0004] The object of the present invention is to provide a pressure foot normal calibration device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pressure foot normal calibration device, comprising a base plate, guide rail columns are fixedly installed on the upper ends of the four corner points of the base plate, a top plate is fixedly installed on the upper ends of the guide rail columns, a pressure foot calibrator is provided in the middle part of the base plate and the top plate, the pressure foot calibrator is connected to the guide rail columns by springs around it, and the pressure foot calibrator is in a suspended state and the upper and lower ends do not contact the base plate and the top plate, a calibration platform is provided at the lower end of the pressure foot calibrator, the calibration platform is fixedly installed on the upper end surface of the base plate, and the upper end of the pressure foot calibrator is connected to the calibration rod.

[0006] Preferably, a long hole is provided in the middle of the guide rail column, and the spring is connected to the guide rail column via a connecting rod.

[0007] Preferably, the tail of the connecting rod is provided with a through hole and a thread in the middle, which can be adjusted up and down in the long hole on the guide rail column by cooperating with a nut, and can be adjusted according to the needs of the site.

[0008] Preferably: the pressure foot calibrator is a hollow structure with a through hole in the middle. The pressure foot calibrator includes a contact cone, an upper boss and a lower boss. The upper boss and the lower boss are located at the upper and lower ends of the pressure foot calibrator and are connected to the guide rail column through springs.

[0009] Preferably, a groove is provided at the lowermost end of the pressure foot calibrator, a calibration dome head is interference-fitted inside the groove, and the calibration rod can be installed inside the through hole.

[0010] Preferably, the upper end of the calibration platform is provided with a wear-resistant smooth surface, and the distance between the wear-resistant smooth surface and the lower end of the pressure foot calibrator is less than 5 mm, so that a certain distance can be provided for buffering and soft contact can be achieved.

[0011] Preferably, a countersunk through hole is opened in the middle of the top plate, and the upper end of the pressure foot calibrator is located inside the countersunk through hole, but there is a gap around it and no contact, thereby improving the contact accuracy with the pressure foot on the main shaft.

[0012] Preferably, baffles are fixedly installed behind the bottom plate and the top plate for protection.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs two main calibration components, a pressure foot calibrator and a calibration platform, which are quickly calibrated through the cooperation of the calibration rod. The pressure foot calibrator is connected to the guide rail columns on all sides by springs and is in a suspended state. When calibrating, soft contact is performed, which reduces errors and improves accuracy. The calibration process is very simple, and the normal direction of the pressure foot can be calibrated with high precision and efficiency, making the pressure foot work more reliably. The overall structure is very compact, the cost is low, and the stability is very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a right side view of the present invention;

[0016] Figure 3 This is the front view of the pressure foot calibrator;

[0017] Figure 4 for Figure 3 A sectional view of the middle axis;

[0018] Figure 5 This is a schematic diagram of the calibration platform structure;

[0019] Figure 6 This is an enlarged schematic diagram of point A.

[0020] In the figure: 1, bottom plate, 2, guide rail column, 3, top plate, 4, spring, 5, calibration rod, 6, pressure foot calibrator, 7, connecting rod, 8, calibration platform, 9, baffle, 801, wear-resistant smooth surface, 601, contact round table, 602, upper boss, 603, lower boss, 604, through hole, 605, groove, 606, calibration dome head. DETAILED DESCRIPTION

[0021] The present invention will be described below based on the embodiments with reference to the accompanying drawings in the embodiments of the present invention. However, it is worth noting that the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. However, for the parts that are not described in detail, those skilled in the art can also fully understand the present invention.

[0022] In addition, those skilled in the art should understand that the drawings are only provided to illustrate the purpose, features and advantages of the present invention, and are not actually drawn to scale.

[0023] At the same time, unless the context clearly requires otherwise, words such as "include", "comprising" and the like throughout the specification and claims should be interpreted as inclusive rather than exclusive or exhaustive; that is, as "including but not limited to".

[0024] See also Figures 1-6 The present invention provides a technical solution: it includes a base plate 1, and guide rail columns 2 are fixedly installed on the upper ends of the four corner points of the base plate 1, and a top plate 3 is fixedly installed on the upper ends of the guide rail columns 2. A pressure foot calibrator 6 is provided in the middle part of the base plate 1 and the top plate 3. The pressure foot calibrator 6 is connected to the guide rail columns 2 through springs 4, and the pressure foot calibrator 6 is in a suspended state and the upper and lower ends do not contact the base plate 1 and the top plate 3. A calibration platform 8 is provided at the lower end of the pressure foot calibrator 6, and the calibration platform 8 is fixedly installed on the upper end surface of the base plate 1. The upper end of the pressure foot calibrator 6 is connected to the calibration rod 5.

[0025] A long hole is provided in the middle of the guide rail column 2, and the spring 4 is connected to the guide rail column 2 through a connecting rod 7.

[0026] The tail of the connecting rod 7 is provided with a through hole and the middle is a thread, which can be adjusted up and down by cooperating with a nut through the long hole on the guide rail column 2.

[0027] The pressure foot calibrator 6 is a hollow structure with a through hole 604 in the middle. The pressure foot calibrator 6 includes a contact cone 601, an upper boss 602 and a lower boss 603. The upper boss 602 and the lower boss 603 are located at the upper and lower ends of the pressure foot calibrator 6 and are connected to the guide rail column 2 through a spring 4.

[0028] A groove 605 is provided at the lower end of the pressure foot calibrator 6 , and a calibration dome head 606 is interference-fitted inside the groove 605 . The calibration rod 5 can be installed inside the through hole 604 .

[0029] The upper end of the calibration platform 8 is provided with a wear-resistant smooth surface 801 , and the distance between the wear-resistant smooth surface 801 and the lower end of the pressure foot calibrator 6 is less than 5 mm.

[0030] A countersunk through hole is opened in the middle of the top plate 3 , and the upper end of the pressure foot calibrator 6 is located inside the countersunk through hole, but has no contact with the surrounding area.

[0031] A baffle 9 is fixedly installed behind the bottom plate 1 and the top plate 3 .

[0032] When using the present invention, first connect the main shaft to the calibration rod 5, and then extend the calibration rod 5 into the through hole 604 of the pressure foot calibrator 6, so that the calibration rod 5 and the pressure foot calibrator 6 are coaxial, that is, the main shaft and the pressure foot calibrator 6 are coaxial; next, the pressure foot is pressed onto the end face of the contact truncated table 601 above the pressure foot calibrator 6, that is, the pressure foot and the end face of the pressure foot calibrator 6 are on the same plane; the calibration dome head 606 at the lower end of the pressure foot calibrator 6 contacts the wear-resistant smooth surface 801 of the calibration table 8; the pressure foot calibrator 6 can realize suspension fine-tuning through the cooperation of the upper and lower bosses and the spring 4, eliminating the influence of the fixed end on the pressure foot calibration when the two are in contact; after the pressure foot presses the pressure foot calibrator 6, the perpendicularity of the end face of the pressure foot calibrator 6 and the through hole 604 is converted into the perpendicularity of the main shaft and the pressure foot, and the pressure foot now calibrates the pressure foot end sensor to zero; that is, the normal calibration of the pressure foot is completed.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pressure foot normal calibration device, characterized by: The invention comprises a bottom plate (1), wherein the upper ends of the four corner points of the bottom plate (1) are fixedly mounted with guide rail columns (2), the upper ends of the guide rail columns (2) are fixedly mounted with a top plate (3), and a pressure foot calibrator (6) is provided in the middle part of the bottom plate (1) and the top plate (3), wherein the pressure foot calibrator (6) is connected to the guide rail columns (2) via springs (4) around the pressure foot calibrator (6), and the pressure foot calibrator (6) is in a suspended state, and the upper and lower ends do not contact the bottom plate (1) and the top plate (3), and a calibration platform (8) is provided at the lower end of the pressure foot calibrator (6), wherein the calibration platform (8) is fixedly mounted on the upper end surface of the bottom plate (1), and the upper end of the pressure foot calibrator (6) is connected with a calibration rod (5); the pressure foot calibrator (6) is a hollow structure, and a There is a through hole (604), the pressure foot calibrator (6) includes a contact round table (601), an upper boss (602) and a lower boss (603), the upper boss (602) and the lower boss (603) are located at the upper and lower ends of the pressure foot calibrator (6), and are connected to the guide rail column (2) through a spring (4); the lower end of the pressure foot calibrator (6) is provided with a groove (605), and a calibration dome head (606) is installed in the groove (605) in an interference fit, and the calibration rod (5) can be installed in the through hole (604); the upper end of the calibration platform (8) is provided with a wear-resistant smooth surface (801), and the distance between the wear-resistant smooth surface (801) and the lower end of the pressure foot calibrator (6) is less than 5 mm.

2. The pressure foot normal calibration device according to claim 1, characterized in that: A long hole is provided in the middle of the guide rail column (2), and the spring (4) is connected to the guide rail column (2) via a connecting rod (7).

3. The pressure foot normal calibration device according to claim 2, characterized in that: The connecting rod (7) is provided with a through hole at the tail end and a thread in the middle, and can be adjusted up and down in the long hole on the guide rail column (2) by cooperating with a nut.

4. The pressure foot normal calibration device according to claim 1, characterized in that: A countersunk through hole is opened in the middle of the top plate (3), and the upper end of the pressure foot calibrator (6) is located inside the countersunk through hole, but has no contact with the surrounding area.

5. The pressure foot normal calibration device according to claim 4, characterized in that: A baffle (9) is fixedly mounted behind the bottom plate (1) and the top plate (3).

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