Three-axis coordinate positioning mechanism

Abstract

The utility model discloses a three-axis coordinate positioning mechanism which comprises a base (100), a portal frame (200), a first moving mechanism (300), a third moving mechanism (500) and a second moving mechanism (400). The third moving mechanism (500) comprises a third guide rail (501) and a third sliding block (502) installed on the third guide rail (501) in a sliding mode. The third sliding block (502) comprises at least one third limiting guide piece (503) used for limiting and guiding the third sliding block (502) and matched with the third guide rail (501). The third sliding block of the third moving mechanism is provided with at least one third limiting guide piece used for limiting and guiding the third sliding block, and the third limiting guide piece is matched with the third guide rail, so that the third sliding block stably moves on the third guide rail, the stability of the third moving mechanism is improved, and the service life of the third moving mechanism is prolonged. And thus, the overall stability and safety of the system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a three-axis coordinate positioning mechanism. Background Art

[0002] With the improvement of my country's economic level and the gradual advancement of science and technology, the automation level of my country's manufacturing industry is getting higher and higher, and the number of automated equipment in various factories is increasing. Among them, the three-axis moving mechanism is one of the common automated equipment.

[0003] Chinese utility model patent publication number CN208713975U discloses an automated three-axis mobile mechanism, comprising a three-axis mobile mechanism body, an X-axis mobile mechanism with an X-axis guide rail fixedly connected to the top, a first slider provided on one side of the X-axis guide rail, the first slider fixedly connected to the bottom of the Y-axis mobile mechanism, a Y-axis mobile mechanism with a Y-axis guide rail fixedly connected to the top, a second slider provided on one side of the Y-axis guide rail, the second slider fixedly connected to the Z-axis mobile mechanism, a Z-axis mobile mechanism with a Z-axis guide rail fixedly connected to one side, a first hydraulic cylinder provided on one side of the X-axis mobile mechanism, a first hydraulic rod fixedly connected to one side of the output end of the first hydraulic cylinder, a second hydraulic cylinder provided on one side of the Y-axis mobile mechanism, the other end of the second hydraulic rod fixedly connected to the second slider, and protective diaphragms provided on both sides of the Z-axis mobile mechanism. The mechanism utilizes a slider and rail structure to achieve movement. Consequently, when the drive assembly drives the slider to move, the slider is prone to contact with the rail, causing vibration, which can cause the entire mobile mechanism to shake severely during operation and easily damage the mechanism.

[0004] Therefore, the existing technology needs to be improved and enhanced. Utility Model Content

[0005] The utility model aims to overcome the deficiencies in the prior art and to provide a three-axis coordinate positioning mechanism with high stability and high safety.

[0006] The utility model achieves the above-mentioned purpose through the following technical means:

[0007] A three-axis coordinate positioning mechanism includes a base, a gantry mounted on the base, a first moving mechanism mounted below the gantry and reciprocating in a first direction, a third moving mechanism mounted on a crossbeam of the gantry and reciprocating in a third direction, and a second moving mechanism driving the third moving mechanism to reciprocate in a second direction.

[0008] The third moving mechanism includes a third guide rail and a third slider slidably mounted on the third guide rail. The third slider includes at least one third limiting guide piece for limiting and guiding the third slider and cooperating with the third guide rail.

[0009] As a further solution of the present invention, the second moving mechanism includes a second guide rail and a second slider slidably mounted on the second guide rail, and the second slider includes at least one second limiting guide plate for limiting and guiding the second slider and cooperating with the second guide rail.

[0010] As a further solution of the present invention, the second moving mechanism includes a second servo motor and a second screw rod connected to the output shaft of the second servo motor, and the second screw rod is movably connected to the second slider; the second slider is slidably installed in the second sliding groove of the second guide rail, and second protrusions are relatively arranged on both sides of the second slider, and the second protrusion is slidably arranged in the second sliding groove on the inner wall of the third sliding groove.

[0011] As a further solution of the present invention, a second mounting bracket is provided at one end of the second guide rail close to the second servo motor, and a second mounting plate is provided at one end of the second guide rail away from the second servo motor. The two ends of the second screw rod are respectively mounted on the second mounting bracket and the second mounting plate through bearings.

[0012] As a further solution of the present invention, the third moving mechanism includes a third servo motor and a third screw rod connected to the output shaft of the third servo motor, and the third screw rod is movably connected to the third slider; the third slider is slidably installed in the third sliding groove of the third guide rail, and third protrusions are relatively arranged on both sides of the third slider. The third protrusion is slidably arranged in the third sliding groove on the inner wall of the third sliding groove, and the third slider is fixed on the second slider.

[0013] As a further solution of the present invention, a third mounting bracket is provided at one end of the third guide rail close to the third servo motor, and a third mounting plate is provided at one end of the third guide rail away from the third servo motor. Both ends of the third screw rod are respectively mounted on the third mounting bracket and the third mounting plate through bearings.

[0014] As a further solution of the present invention, the first moving mechanism includes a first servo motor, a first screw connected to the output shaft of the first servo motor, a sleeve movably sleeved on the first screw, and a platform arranged on the sleeve.

[0015] As a further solution of the present invention, at least one first sliding block is provided below both ends of the platform. The first sliding block is slidably mounted on a first guide rail, and the first guide rail is provided on the base.

[0016] As a further solution of the present invention, both ends of the first screw rod are rotatably mounted on the bearing seat through bearings.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Due to the adoption of the above-mentioned structural design, that is, at least one third limiting guide piece is provided on the third slider of the third moving mechanism for limiting and guiding the third slider, and the third limiting guide piece cooperates with the third guide rail, so that the third slider moves smoothly on the third guide rail, thereby improving the stability of the third moving mechanism, and further improving the overall stability and safety of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attachment Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0020] Attachment Figure 2 This is a schematic diagram of the third moving mechanism of an embodiment of the present utility model;

[0021] Attachment Figure 3 This is an exploded schematic diagram of the third moving mechanism of an embodiment of the present utility model;

[0022] Attachment Figure 4 This is a schematic diagram of the second moving mechanism of an embodiment of the present utility model;

[0023] Attachment Figure 5 This is a schematic diagram of the exploded structure of the first moving mechanism of an embodiment of the present utility model.

[0024] The numbers in the figure are:

[0025] 100-base, 200-gantry, 300-first moving mechanism, 400-second moving mechanism, 500-third moving mechanism;

[0026] 501-third guide rail, 502-third slider, 503-third limiting guide plate, 504-third servo motor, 505-third screw rod, 506-third sliding groove, 507-third protrusion, 508-third sliding groove;

[0027] 401-second guide rail, 402-second slider, 403-second limiting guide plate, 404-second servo motor, 405-second screw rod, 406-second sliding groove, 407-second protrusion, 408-second sliding groove;

[0028] 4011-second mounting frame, 4012-second mounting plate;

[0029] 5011-third mounting frame, 5012-third mounting plate;

[0030] 301-first servo motor, 302-first screw rod, 303-sleeve, 304-platform, 305-first slider, 306-first guide rail, 307-bearing seat. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1-3 As shown, the present application discloses a three-axis coordinate positioning mechanism, comprising a base 100, a gantry 200 disposed on the base 100, a first moving mechanism 300 disposed below the gantry 100 and reciprocating along a first direction, a third moving mechanism 500 disposed on a crossbeam of the gantry 200 and reciprocating along a third direction, and a second moving mechanism 200 driving the third moving mechanism 500 to reciprocate along a second direction; in the above, the first direction is Figure 1 The X direction shown, the second direction is Figure 1 The Y direction shown, the third direction is Figure 1 However, the present invention does not impose any limitation on this. In other embodiments, the first direction may also be Figure 1 The third movable mechanism 500 includes a third guide rail 501 and a third slider 502 slidably mounted on the third guide rail 501. The third slider 502 includes two third limiting guide plates 503 for limiting and guiding the third slider 502 and cooperating with the third guide rail 501. The two third limiting guide plates 503 are oppositely arranged, one on each side of the third slider 502. The two third limiting guide plates 503 cooperate with the third guide rail 501 to ensure smooth movement of the third slider 502 on the third guide rail 501, thereby improving the stability of the third movable mechanism 500 and, in turn, the overall stability and safety of the present application, preventing damage during operation. In addition, the end of the third limiting guide plate 503 away from the third slider is provided with an arc-shaped protrusion to increase the strength of the third limiting guide plate 503.

[0034] Specifically, the third moving mechanism 500 includes a third servo motor 504 and a third screw rod 505 connected to the output shaft of the third servo motor 504, the third screw rod 505 is movably connected to the third slider 502, that is, threadedly connected; the third slider 502 is slidably installed in the third sliding groove 506 of the third guide rail 501, and the third limiting guide piece 503 abuts against the groove edge of the third sliding groove 506; third protrusions 507 are relatively provided on both sides of the third slider 502, the third protrusions are semicircular protrusions, and the third protrusions 507 are slidably arranged. The third slider 502 is placed in the third sliding groove 508 on the inner wall of the third sliding groove 506, and is fixed on the second slider 402. In this way, the third servo motor 504 drives the third screw rod 505, and the third protrusion 507 on the third slider 502 on the third screw rod 505 slides in the third sliding groove 508, and the third limiting guide piece 503 on the third slider 502 slides on the groove edge of the third sliding groove 506, so that the third slider 502 moves more smoothly along the third guide rail 501, reducing the jitter amplitude of the third slider 502 during movement.

[0035] Specifically, a third mounting bracket 5011 is provided at one end of the third guide rail 501 close to the third servo motor 504, and a third mounting plate 5012 is provided at one end of the third guide rail 501 away from the third servo motor 504. Both ends of the third screw rod 505 are respectively mounted on the third mounting bracket 5011 and the third mounting plate 5012 through bearings. By mounting the third screw rod 505 on the third mounting bracket 5011 and the third mounting plate 5012, the stability of the third screw rod 505 during operation is improved.

[0036] like Figure 4 Specifically, the second movable mechanism 400 includes a second guide rail 401 and a second slider 402 slidably mounted on the second guide rail 401. The second slider 402 includes two second limiting guide pieces 403 for limiting and guiding the second slider 402 and cooperating with the second guide rail 401. The two second limiting guide pieces 403 are arranged opposite each other, one on each side of the second slider 402. The two second limiting guide pieces 403 cooperate with the second guide rail 401 to ensure smooth movement of the second slider 402 on the second guide rail 401, thereby improving the stability of the second movable mechanism 400 and, in turn, the overall stability and safety of the present application, preventing damage during operation. In addition, the end of the second limiting guide piece 403 away from the second slider is provided with an arc-shaped protrusion to increase the strength of the second limiting guide piece 403.

[0037] Specifically, the second moving mechanism 400 includes a second servo motor 404 and a second screw rod 405 connected to the output shaft of the second servo motor 404, the second screw rod 405 is movably connected to the second slider 402, that is, threadedly connected; the second slider 402 is slidably installed in the second sliding groove 406 of the second guide rail 401, and the second limiting guide piece 403 is in contact with the groove edge of the second sliding groove 406, and the second slider 402 is provided with second protrusions 407 on both sides thereof, the second protrusions are semicircular protrusions, and the second protrusions 407 are slidably arranged. It is placed in the second sliding groove 408 on the inner wall of the second sliding groove 406. In this way, the second servo motor 404 drives the second screw rod 405, and the second protrusion 407 on the second slider 402 on the second screw rod 405 slides in the second sliding groove 408. The second limiting guide piece 403 on the second slider 402 slides on the groove edge of the second sliding groove 406, and at the same time enables the third moving mechanism to reciprocate along the second direction, so that the second slider 402 can move more smoothly along the second guide rail 401, reducing the jitter amplitude of the second slider 402 during movement.

[0038] Specifically, a second mounting bracket 4011 is provided at one end of the second guide rail 401 close to the second servo motor 404, and a second mounting plate 4012 is provided at one end of the second guide rail 401 away from the second servo motor 404. The two ends of the second screw rod 405 are respectively mounted on the second mounting bracket 4011 and the second mounting plate 4012 through bearings, so as to improve the stability of the second screw rod 405 during operation.

[0039] The third servo motor 504 and the second servo motor 404 are both PANASONIC 750W servo motors to achieve precise speed control.

[0040] like Figure 5 As shown, specifically, a groove is provided on the base 100 below the gantry 200, within which a first moving mechanism 300 is provided. The first moving mechanism 300 includes a first servo motor 301, a first screw rod 302 connected to the output shaft of the first servo motor 301, a sleeve 303 movably sleeved on the first screw rod 302, and a platform 304 provided on the sleeve 303. Two first sliders 305 are provided below both ends of the platform 304. The first sliders 305 are slidably mounted on a first guide rail 306, which is provided on the base 100, i.e., on the edge of the groove. In this way, the first servo motor 301 drives the first screw rod 302, and the sleeve 303 on the first screw rod 302 drives the platform to reciprocate along the first direction.

[0041] Specifically, both ends of the first screw rod 302 are rotatably mounted on the bearing seats 307 through bearings. The two bearing seats 307 are mounted on the bottom of the groove to improve the stability of the first screw rod 302 during operation.

[0042] The first servo motor 301 adopts a PANASONIC 1000W servo motor to achieve precise speed control.

[0043] In summary, the present invention solves the deficiencies in the prior art through the above-mentioned structural design, and has the characteristics of reasonable structure, good stability, and high safety.

[0044] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood 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 present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-axis coordinate positioning mechanism, comprising a base (100), a gantry (200) disposed on the base, a first moving mechanism (300) disposed below the gantry (200) and reciprocating in a first direction, a third moving mechanism (500) disposed on a crossbeam of the gantry (200) and reciprocating in a third direction, and a second moving mechanism (400) driving the third moving mechanism (500) to reciprocate in a second direction; characterized in that: The third moving mechanism (500) comprises a third guide rail (501) and a third slider (502) slidably mounted on the third guide rail (501); the third slider (502) comprises at least one third limiting guide piece (503) for limiting and guiding the third slider (502) and cooperating with the third guide rail (501).

2. The three-axis coordinate positioning mechanism according to claim 1, characterized in that: The second moving mechanism (400) includes a second guide rail (401) and a second slider (402) slidably mounted on the second guide rail (401); the second slider (402) includes at least one second limiting guide piece (403) for limiting and guiding the second slider (402) and cooperating with the second guide rail (401).

3. The three-axis coordinate positioning mechanism according to claim 2, characterized in that: The second moving mechanism (400) includes a second servo motor (404) and a second screw rod (405) connected to the output shaft of the second servo motor (404), and the second screw rod (405) is movably connected to the second slider (402); the second slider (402) is slidably installed in the second sliding groove (406) of the second guide rail (401), and second protrusions (407) are arranged on both sides of the second slider (402) opposite to each other, and the second protrusions (407) are slidably arranged in the second sliding groove (408) on the inner wall of the third sliding groove (406).

4. The three-axis coordinate positioning mechanism according to claim 3, characterized in that: A second mounting bracket (4011) is provided at one end of the second guide rail (401) close to the second servo motor (404), and a second mounting plate (4012) is provided at one end of the second guide rail (401) away from the second servo motor (404). Both ends of the second screw rod (405) are respectively mounted on the second mounting bracket (4011) and the second mounting plate (4012) via bearings.

5. The three-axis coordinate positioning mechanism according to claim 2, characterized in that: The third moving mechanism (500) includes a third servo motor (504) and a third screw rod (505) connected to the output shaft of the third servo motor (504), and the third screw rod (505) is movably connected to the third slider (502); the third slider (502) is slidably installed in the third sliding groove (506) of the third guide rail (501), and third protrusions (507) are arranged on both sides of the third slider (502) in a relative manner. The third protrusions (507) are slidably arranged in the third sliding groove (508) on the inner wall of the third sliding groove (506), and the third slider (502) is fixed on the second slider (402).

6. The three-axis coordinate positioning mechanism according to claim 5, characterized in that: A third mounting bracket (5011) is provided at one end of the third guide rail (500) close to the third servo motor (504), a third mounting plate (5012) is provided at one end of the third guide rail (501) away from the third servo motor (504), and two ends of the third screw rod (505) are respectively mounted on the third mounting bracket (5011) and the third mounting plate (5012) via bearings.

7. The three-axis coordinate positioning mechanism according to claim 1, characterized in that: The first moving mechanism (300) comprises a first servo motor (301), a first screw rod (302) connected to the output shaft of the first servo motor (301), a shaft sleeve (303) movably sleeved on the first screw rod (302), and a platform (304) arranged on the shaft sleeve (303).

8. The three-axis coordinate positioning mechanism according to claim 7, characterized in that: At least one first slider (305) is provided below both ends of the platform (304). The first slider (305) is slidably mounted on a first guide rail (306) which is provided on the base (100).

9. The three-axis coordinate positioning mechanism according to claim 8, characterized in that: Both ends of the first screw rod (302) are rotatably mounted on the bearing seat (307) via bearings.

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