Positioning tool for gantry machine tool

Abstract

The utility model relates to machine tool technical field especially a kind of positioning tool for gantry machine tool, solve the existing shortcomings in prior art, including frame body, positioning structure and placing table, two posts are provided on the frame body, connecting beam is connected between two side posts, clamping assembly is slidably arranged on the side of connecting beam along linear direction, slidingly setting moving plate along the length direction of frame body, the placing table is fixedly clamped on moving plate, positioning structure is provided on the both sides of placing table, a plurality of waste grooves are provided on placing table, mounting hole of " convex " type structure is provided in the middle of waste groove, the inner wall on the both sides of mounting hole is all fixedly installed with baffle, rotating drum is rotatably arranged in mounting hole, rotating drum has magnetism, and hanging ring is slidably arranged on the outer surface of rotating drum along its length direction, and hanging ring and baffle slide contact, compared with prior art, the utility model effectively improves the degree of automation of waste cleaning.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically a positioning fixture for a gantry machine tool. Background Technology

[0002] Gantry milling machines, as high-precision and high-efficiency large-scale CNC machining equipment, are widely used in aerospace, shipbuilding, heavy machinery and other fields, mainly for machining large or complex workpieces. During the machining process, accurate workpiece positioning and reliable clamping are among the key factors in ensuring machining accuracy.

[0003] Chinese utility model patent CN218461581U discloses a positioning device for a gantry milling machine. This device includes a positioning mechanism mounted within a bearing on a mounting block. The positioning mechanism clamps and secures the workpiece placed on a table. By rotating and adjusting the corresponding two sets of clamping plates on the positioning mechanism, the workpiece can be clamped and fixed. However, during operation, it was found that while the waste trough design on the table guides waste discharge, the lack of an active cleaning mechanism may lead to waste accumulation, affecting subsequent processing efficiency.

[0004] Therefore, we propose a positioning fixture for gantry milling machines to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a positioning fixture for a gantry milling machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A positioning fixture for a gantry milling machine includes a frame, a positioning structure, and a placement table. The frame is provided with two columns, and a connecting beam is connected between the two columns. A clamping assembly is slidably provided on one side of the connecting beam along a straight direction.

[0008] A movable plate is slidably arranged on the frame along its length. The movable plate is fixedly clamped to hold the placement platform. Positioning structures are provided on both sides of the placement platform. Multiple waste troughs are opened on the placement platform. A "convex" shaped mounting hole is opened in the middle of the waste trough. A baffle is fixedly installed on the inner wall of the two opposite sides of the mounting hole. A rotating cylinder is rotatably arranged in the mounting hole. The rotating cylinder is magnetic. A hanging ring is slidably arranged on the outer surface of the rotating cylinder along its length. The hanging ring slides in contact with the baffle.

[0009] According to the above technical solution, the frame and the column are fixed together by bolts. An installation plate is fixedly installed between the side walls of the column. Two guide rods and a screw rod that can be rotated and adjusted are fixed between the two opposite installation plates. A movable seat is slidably arranged between the two guide rods. The screw rod passes through the movable seat and is threadedly driven with it.

[0010] According to the above technical solution, the movable seat is arranged in a "U" shape, and a screw rod is rotatably arranged between the side walls of the movable seat along its height direction. Vertical rods are fixed on both sides of the screw rod, and the vertical rods are also fixed between the opposite side walls of the movable seat.

[0011] According to the above technical solution, the clamping assembly includes a fixed seat and an adjusting seat. The fixed seat slides between the vertical rods on both sides, and the screw rod 2 passes through the fixed seat and engages with it through threaded transmission. Connecting blocks 1 are fixedly installed on both side walls of the fixed seat. The adjusting seat is located on one side of the fixed seat and is at the same horizontal height as it. Connecting blocks 2 are fixedly installed on both side walls of the adjusting seat. Fasteners pass through the connecting blocks 2, and one end of the fasteners can be threadedly connected to the connecting blocks 1. The middle of the side walls of the adjusting seat and the fixed seat opposite each other are both set with an arc surface structure.

[0012] According to the above technical solution, a through hole is opened in the middle of the movable plate, and an "L"-shaped positioning seat is fixedly installed on the top surface of the movable plate outside the through hole. Multiple connecting seats are fixedly installed on the bottom wall of the movable plate. Two sets of fixed seats are symmetrically installed on the top surface of the column, each set including two. A screw rod is rotatably arranged between the two fixed seats in the same set, and a rotary motor connected to the screw rod is installed on one of the fixed seats. Two connecting seats are provided on the screw rod and are threadedly driven to it respectively. The movement direction of the connecting seats on the same screw rod is the same.

[0013] According to the above technical solution, the positioning structure includes a fixed frame and a positioning frame. The fixed frame is arranged in an "L" shape, and a screw is rotatably arranged between the opposite side walls of the fixed frame. A rotary motor connected to and driven by the screw is installed on the outer wall of the fixed frame. The positioning frame is arranged in a "U" shape, and the inner side walls on both sides of the positioning frame slide in contact with the side walls on both sides of the placement platform. A slider is fixed on both outer side walls of the positioning frame. The screw passes through the slider and is threadedly driven to it. The two sliders on the same screw move in opposite directions.

[0014] According to the above technical solution, guide grooves are provided on the opposite side walls of the mounting hole. Two symmetrical connecting strips are fixed on the outer circumference of the hanging ring. A screw is rotatably installed in the guide groove. The connecting strip slides between the inner walls of the guide groove. The screw passes through the connecting strip and is threadedly engaged with it. A rotating shaft that rotates synchronously passes through the middle of the rotating cylinder. The length of the rotating cylinder is less than the length of the mounting hole. When one end of the scraper ring contacts the end face of the mounting hole, the other end of the scraper ring is still in contact with the rotating cylinder.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] By creating mounting holes in the waste trough and installing structures such as baffles, scraper rings, and rotating drums within these holes, the waste is attracted by the magnetism of the rotating drum. As the drum rotates, the area where the waste is attracted changes continuously, preventing accumulation in the same area. In addition, the rotating drum is equipped with adjustable scraper rings, allowing the attracted material to fall from both ends of the mounting holes under the action of the scraper rings, effectively improving the automation level of waste cleaning. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a longitudinal sectional view of the present invention;

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of part A in the middle;

[0020] Figure 4 This is a schematic diagram of the positioning structure of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the placement platform, rotating cylinder, and scraping ring of this utility model.

[0022] In the diagram: 1. Frame; 11. Column; 111. Mounting plate; 12. Connecting beam; 121. Fixed seat; 2. Moving seat; 3. Clamping assembly; 4. Moving plate; 41. Through hole; 42. Connecting seat; 5. Positioning structure; 51. Fixed frame; 511. Screw four; 52. Positioning frame; 521. Sliding block; 6. Placement platform; 61. Mounting hole; 62. Side guard; 7. Scraper ring; 71. Connecting strip; 8. Rotary cylinder; 81. Rotating shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] A positioning fixture for a gantry milling machine includes a frame 1, a positioning structure 5, and a placement platform 6. Two columns 11 are provided on the frame 1, and a connecting beam 12 is fixedly installed between the two columns 11. The frame 1 and the columns 11 are fixed together by bolts. Mounting plates 111 are fixedly installed between the side walls of the columns 11. Two guide rods and a rotatable and adjustable screw are fixed between the two opposite mounting plates 111. A rotary motor that drives the screw is fixedly installed on one of the mounting plates 111. A movable seat 2 is slidably arranged between the two guide rods. The screw passes through the movable seat 2 and is threadedly driven to it.

[0026] The movable seat 2 is arranged in a "U" shape, and a screw rod 2 is rotatably arranged between the side walls of the movable seat 2 along its height direction. A rotary motor 2 that drives the screw rod 2 is fixedly installed on the top surface of the movable seat 2. Vertical rods are fixed on both sides of the screw rod 2, and the vertical rods are also fixed between the opposite side walls of the movable seat 2.

[0027] It should be further explained that by starting the first rotary motor, the rotation of the first screw is controlled, thereby achieving the displacement movement of the moving seat 2; by starting the second rotary motor, the rotation of the second screw is controlled, thereby achieving the height adjustment of the clamping assembly 3.

[0028] A clamping assembly 3 is slidably provided on one side of the connecting beam 12 along a straight direction. The clamping assembly 3 includes a fixed seat 121 and an adjusting seat. The fixed seat 121 slides between the vertical rods on both sides, and the screw rod 2 passes through the fixed seat 121 and engages with it through threaded transmission. A connecting block 1 is fixedly installed on both side walls of the fixed seat 121. The adjusting seat is located on one side of the fixed seat 121 and is at the same horizontal height as it. A connecting block 2 is fixedly installed on both side walls of the adjusting seat. A fastener (a fastening screw) passes through the connecting block 2. One end of the fastener can be threadedly connected to the connecting block 1. The middle of the side walls opposite to the adjusting seat and the fixed seat 121 are both set with an arc surface structure.

[0029] It should be further explained that by loosening the fasteners according to the size of the object to be clamped, the adjusting seat and the fixed seat 121 are separated. Then, the object to be clamped is placed close to the arc surface of the fixed seat 121, and the adjusting seat is brought close to the object to be clamped and pressed tightly. Finally, the fasteners are screwed into the connecting block to lock and fix it.

[0030] A movable plate 4 is slidably arranged on the frame 1 along its length. A through hole 41 is opened in the middle of the movable plate 4. An "L"-shaped positioning seat is fixedly installed on the top surface of the movable plate 4 outside the through hole 41. Multiple connecting seats 42 are fixedly installed on the bottom wall of the movable plate 4. Two sets of fixed seats 121 are symmetrically installed on the top surface of the column 11. Each set includes two fixed seats. A screw rod is rotatably arranged between the two fixed seats 121 in the same set. A rotary motor connected to the screw rod is installed on one of the fixed seats 121. Two connecting seats 42 are provided on the screw rod and are threadedly driven to it. The movement direction of the connecting seats 42 on the same screw rod is the same.

[0031] It should be further explained that by starting the rotary motor three, it drives the screw three to rotate, thereby enabling the position adjustment of the moving plate 4 under the action of the screw drive.

[0032] The movable plate 4 is fixedly clamped to hold the placement platform 6. The placement platform 6 is provided with positioning structures 5 on both sides. The positioning structure 5 includes a fixed frame 51 and a positioning frame 52. The fixed frame 51 is arranged in an "L" shape and its bottom end is fixedly installed on the movable plate 4. A screw 4 511 (the screw 4 511 is a double screw) is rotatably arranged between the opposite side walls of the fixed frame 51. A rotary motor 4 connected to and driven by the screw 4 511 is fixedly installed on the outer wall of the fixed frame 51. The positioning frame 52 is arranged in a "U" shape, and the inner side walls of the two sides of the positioning frame 52 slide in contact with the side walls of the placement platform 6 respectively. A slider 521 is fixed on the outer side walls of the two sides of the positioning frame 52. The screw 4 511 passes through the slider 521 and is threadedly driven with it. The two sliders 521 on the same screw 4 511 move in opposite directions.

[0033] It should be further explained that by starting the rotary motor four, it drives the screw four 511 to rotate, thereby causing the slider 521 to move and adjust synchronously with the positioning frame 52 connected to it until the positioning frame 52 contacts the workpiece and stops. Finally, the workpiece is fixed in the middle position of the placement table 6.

[0034] The placement platform 6 has multiple waste troughs. The waste troughs have a convex mounting hole 61 in the middle. The inner walls on both sides of the mounting hole 61 are fixedly installed with baffles 62. A rotating cylinder 8 is rotatably installed in the mounting hole 61. The rotating cylinder 8 is magnetic (it can attract some iron impurities, and impurities without attraction will fall directly downwards as the rotating cylinder 8 rotates). A hanging ring is slidably installed on the outer surface of the rotating cylinder 8 along its length. The hanging ring is in sliding contact with the baffle.

[0035] Guide grooves are provided on the opposite side walls of the mounting hole 61. Two symmetrical connecting strips 71 are fixed on the outer circumference of the hanging ring. A screw five is rotatably installed in the guide groove. A rotary motor five (not shown in the figure, installed between the inner walls of the placement platform 6) is connected to one end of the screw five. The connecting strips 71 slide between the inner walls of the guide groove, and the screw five passes through the connecting strips 71 and is threadedly engaged with them. A rotating shaft 81 that rotates synchronously passes through the middle of the rotating cylinder 8. A rotary motor six (not shown in the figure, installed between the inner walls of the placement platform 6) is connected to one end of the rotating shaft 81. The length of the rotating cylinder 8 is less than the length of the mounting hole 61. When one end of the scraper ring 7 contacts the end face of the mounting hole 61, the other end of the scraper ring 7 is still in contact with the rotating cylinder 8.

[0036] Distance sensors (not shown in the figure) are embedded in both end walls of the mounting hole 61, and the mounting positions of the distance sensors are directly opposite the scraper ring 7.

[0037] It should be further explained that during operation, the rotary motors five and six are started, causing the rotating shaft 81 to drive the rotating drum 8 to rotate. At the same time, the screw five rotates with the drive of the rotary motor five, and the connecting bar 71 drives the scraper ring 7 to move in a straight line under the action of the thread drive. When the scraper ring 7 moves to contact one side of the mounting hole 61, the distance sensor on that side is triggered, and the rotary motor five immediately changes the output direction of the screw five, so that the scraper ring 7 continues to move to the other side. This reciprocating movement continuously scrapes off the impurities adsorbed on the rotating drum 8 from both ends.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positioning fixture for a gantry milling machine, comprising a frame (1), a positioning structure (5), and a placement table (6), characterized in that, The frame (1) is provided with two columns (11), and a connecting beam (12) is connected between the two columns (11). A clamping component (3) is slidably provided on one side of the connecting beam (12) along a straight line. A movable plate (4) is slidably arranged on the frame (1) along its length direction. The movable plate (4) is fixedly clamped to hold the placement platform (6). Positioning structures (5) are provided on both sides of the placement platform (6). Multiple waste troughs are opened on the placement platform (6). A "convex" shaped mounting hole (61) is opened in the middle of the waste trough. A baffle (62) is fixedly installed on the inner walls of the two sides opposite to each other of the mounting hole (61). A rotating cylinder (8) is rotatably arranged in the mounting hole (61). The rotating cylinder (8) is magnetic. A hanging ring is slidably arranged on the outer surface of the rotating cylinder (8) along its length direction. The hanging ring is in sliding contact with the baffle.

2. The positioning fixture for a gantry milling machine according to claim 1, characterized in that, The frame (1) is fixed to the column (11) by bolts. An installation plate (111) is fixedly installed between the side walls of the column (11). Two guide rods and a screw rod that can be rotated and adjusted are fixed between the two opposite installation plates (111). A movable seat (2) is slidably arranged between the two guide rods. The screw rod passes through the movable seat (2) and is threadedly engaged with it.

3. A positioning fixture for a gantry milling machine according to claim 2, characterized in that, The movable seat (2) is arranged in a "U" shape, and a screw rod is rotatably arranged between the side walls of the movable seat (2) along its height direction. Vertical rods are fixed on both sides of the screw rod, and the vertical rods are also fixed between the opposite side walls of the movable seat (2).

4. A positioning fixture for a gantry milling machine according to claim 3, characterized in that, The clamping assembly (3) includes a fixed seat (121) and an adjusting seat. The fixed seat (121) slides between the vertical rods on both sides, and the screw rod 2 passes through the fixed seat (121) and engages with it in a threaded transmission. Connecting blocks 1 are fixedly installed on both side walls of the fixed seat (121). The adjusting seat is located on one side of the fixed seat (121) and is at the same horizontal height as it. Connecting blocks 2 are fixedly installed on both side walls of the adjusting seat. Fasteners pass through the connecting blocks 2. One end of the fastener can be threadedly connected to the connecting blocks 1. The middle of the side walls opposite to the adjusting seat and the fixed seat (121) are both set with an arc surface structure.

5. A positioning fixture for a gantry milling machine according to claim 4, characterized in that, The movable plate (4) has a through hole (41) in the middle. An "L"-shaped positioning seat is fixedly installed on the top surface of the movable plate (4) outside the through hole (41). Multiple connecting seats (42) are fixedly installed on the bottom wall of the movable plate (4). Two sets of fixed seats (121) are symmetrically installed on the top surface of the column (11). Each set includes two fixed seats. A screw rod is rotatably arranged between the two fixed seats (121) in the same set. A rotary motor connected to the screw rod is installed on one of the fixed seats (121). Two connecting seats (42) are provided on the screw rod and are threadedly driven to it. The movement direction of the connecting seats (42) on the same screw rod is the same.

6. A positioning fixture for a gantry milling machine according to claim 5, characterized in that, The positioning structure (5) includes a fixed frame (51) and a positioning frame (52). The fixed frame (51) is arranged in an "L" shape, and a screw four (511) is rotatably arranged between the opposite side walls of the fixed frame (51). A rotary motor four connected to and driven by the screw four (511) is installed on the outer wall of the fixed frame (51). The positioning frame (52) is arranged in a "U" shape, and the inner side walls on both sides of the positioning frame (52) slide in contact with the side walls on both sides of the placement platform (6). A slider (521) is fixed on both outer side walls of the positioning frame (52). The screw four (511) passes through the slider (521) and is threadedly driven to it. The two sliders (521) on the same screw four (511) move in opposite directions.

7. A positioning fixture for a gantry milling machine according to claim 6, characterized in that, Guide grooves are provided on the opposite side walls of the mounting hole (61). Two symmetrical connecting strips (71) are fixed on the outer circumference of the hanging ring. A screw is rotatably installed in the guide groove. The connecting strip (71) slides between the inner walls of the guide groove. The screw passes through the connecting strip (71) and is threadedly driven with it. A rotating shaft (81) that rotates synchronously passes through the middle of the rotating cylinder (8). The length of the rotating cylinder (8) is less than the length of the mounting hole (61). When one end of the scraper ring (7) contacts the end face of the mounting hole (61), the other end of the scraper ring (7) still contacts the rotating cylinder (8).

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