Double-saddle single-drive cross beam device of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a double-saddle single-drive cross beam device of a numerical control machine tool, which comprises a machine tool base, a right support and a left support are symmetrically and fixedly mounted on the machine tool base, two threaded rods are rotatably mounted between the right support and the left support, and numerical control machine tool saddles are screwed on the threaded rods. A differential monitoring mechanism is arranged on the side edge of the left support. The differential monitoring mechanism comprises a test shaft, the test shaft is fixedly installed at the left side end of the threaded rod, the test shaft is rotatably sleeved with a rotating speed sensor, a processor is arranged below the rotating speed sensor, a signal transmission line is connected between the rotating speed sensor and the processor, a shell cover is fixedly installed on the outer side of the left support, and a vertical rod is fixedly installed on the upper side of the shell cover. By means of the differential monitoring mechanism, when the rotating speed difference of the two threaded rods exceeds the limit during rotation, the warning lamp can be automatically turned on to remind workers to conduct maintenance work, and the service life of each transmission part in a machine tool is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a double-saddle single-drive crossbeam device for numerical control machine tools. Background Art

[0002] CNC machine tools are automated machine tools controlled by computer programs, which achieve high-precision and high-efficiency processing through precise control systems.

[0003] With reference to the utility model patent with authorized announcement number CN213944911U, a double-saddle single-drive beam device for a CNC machine tool is disclosed, comprising a beam body, first bearing seats are fixedly installed on both sides of the beam body, a saddle screw is fixedly installed on the middle part of the first bearing seat, a saddle body is fixedly installed on the outer side of the saddle screw, a second bearing seat is fixedly installed on the outer side of the other end of the saddle screw, and a first connecting shaft is fixedly installed on the other end of the saddle screw.

[0004] The above patent symmetrically arranges two saddle screws to synchronously drive the saddle body. The ends of the two saddle screws are synchronously driven by meshing saddle gears, thereby synchronizing the speeds of the two saddle screws. In actual use, mechanical meshing will always produce a speed difference. The above-mentioned double-saddle single-drive crossbeam device does not have the speed difference self-detection capability. When the two saddle screws produce a large speed difference, it will cause a large meshing drive friction force of the subsequent saddle screws, and eventually the saddle screw will be damaged. For this reason, we propose a double-saddle single-drive crossbeam device for CNC machine tools to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a double-saddle single-drive crossbeam device for a CNC machine tool.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A double-saddle single-drive crossbeam device for a CNC machine tool comprises a machine tool base, on which a right support and a left support are symmetrically fixedly mounted, two threaded rods are rotatably mounted between the right support and the left support, a CNC machine tool saddle is screwed onto the threaded rod, and a differential monitoring mechanism is provided on the side of the left support; the differential monitoring mechanism comprises a test shaft, which is fixedly mounted on the left end of the threaded rod, a speed sensor is rotatably sleeved on the outer side of the test shaft, a processor is provided below the speed sensor, a signal transmission line is connected between the speed sensor and the processor, a shell cover is fixedly mounted on the outer side of the left support, a vertical rod is fixedly mounted on the upper side of the shell cover, and a warning light is fixedly mounted on the upper end of the vertical rod.

[0008] Preferably, both ends of the two threaded rods are rotated and passed through the outside of the left support and the right support respectively.

[0009] Preferably, a driving motor is fixedly mounted on the side of the right support, a first gear is fixedly mounted on the output end of the driving motor, and a second gear is fixedly mounted on the right ends of the two threaded rods, and the first gear and the second gear are meshed with each other.

[0010] Preferably, the first gear has a smaller number of teeth than the second gear.

[0011] Preferably, a chassis is provided outside the first gear and the second gear, the chassis is fixedly mounted on the side wall of the right support and heat dissipation holes are opened on the side wall of the chassis.

[0012] Preferably, a rotating shaft is rotatably installed on the side of the left support, a first stabilizing gear is fixedly installed on the rotating shaft, a second stabilizing gear is fixedly installed on the left end of the threaded rod, the second stabilizing gear is meshed with the first stabilizing gear, the first stabilizing gear is consistent in size with the first gear, and the second stabilizing gear is consistent in size with the second gear.

[0013] Preferably, a slot seat is fixedly mounted on the bottom of the saddle of the CNC machine tool, and a plurality of rollers are rotatably mounted inside the slot seat, and the rollers are in contact with the upper side of the machine tool base.

[0014] Compared with the related art, the double-saddle single-drive crossbeam device for CNC machine tools proposed in this utility model has the following beneficial effects:

[0015] In the present invention, a CNC machine tool double-saddle single-drive crossbeam device is described. Through the differential monitoring mechanism set up, test shafts are installed at the left ends of the two threaded rods, and speed sensors are respectively sleeved on the outsides of the test shafts. The speed sensors can monitor the speed of the two threaded rods in real time and feed back the speed value information to the processor. The processor calculates the difference between the two fed-back speed values to obtain the speed difference when the two threaded rods rotate. When the speed difference exceeds the normal range, the processor controls the warning light to light up and shuts down the CNC machine tool in time to remind the staff to perform maintenance work, thereby avoiding subsequent wear of the threaded rod drive engagement, and also avoiding the instability of the threaded rod driving the CNC machine tool saddle, further ensuring the stability of the CNC machine tool saddle, and then ensuring the accuracy of subsequent parts processing, thereby improving the service life of various transmission parts in the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a double-saddle single-drive crossbeam device for a CNC machine tool proposed in the utility model;

[0017] Figure 2This is a schematic diagram of the three-dimensional split structure of a double-saddle single-drive crossbeam device for CNC machine tools proposed in this utility model. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the three-dimensional split structure of a double-saddle single-drive crossbeam device for CNC machine tools proposed in this utility model. Figure 2 ;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the saddle of a CNC machine tool;

[0020] Figure 5 for Figure 2 A magnified schematic diagram of part A;

[0021] Figure 6 for Figure 3 Enlarged schematic diagram of part B.

[0022] In the figure: 1. Machine tool base; 2. Right support; 3. Left support; 4. Threaded rod; 5. CNC machine tool saddle; 51. Slot seat; 52. Roller; 6. Chassis; 7. Shell cover; 8. Vertical rod; 9. Warning light; 10. Drive motor; 11. First gear; 12. Second gear; 13. Rotating shaft; 14. First stabilizing gear; 15. Second stabilizing gear; 16. Test shaft; 17. Speed sensor; 18. Signal transmission line; 19. Processor. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0024] Reference Figure 1-6 A double-saddle single-drive crossbeam device for a CNC machine tool includes: a machine tool base 1, on which a right support 2 and a left support 3 are symmetrically fixedly installed, two threaded rods 4 are rotatably installed between the right support 2 and the left support 3, a CNC machine tool saddle 5 is screwed on the threaded rod 4, and a differential monitoring mechanism is provided on the side of the left support 3.

[0025] In this method, the differential monitoring mechanism includes a test shaft 16, which is fixedly mounted on the left end of the threaded rod 4. A speed sensor 17 is provided on the outer rotating sleeve of the test shaft 16. A processor 19 is provided below the speed sensor 17. A signal transmission line 18 is connected between the speed sensor 17 and the processor 19. A shell cover 7 is fixedly mounted on the outer side of the left support 3, a vertical rod 8 is fixedly mounted on the upper side of the shell cover 7, and a warning light 9 is fixedly mounted on the upper end of the vertical rod 8.

[0026] Through the above-mentioned setting, the speed sensor 17 can monitor the speed of the test shaft 16. The speed of the test shaft 16 is the speed of the threaded rod 4. The speed data is transmitted to the processor 19 through the signal transmission line 18. The processor 19 calculates the speed difference feedbacked by the two speed sensors 17 to obtain the speed difference of the two threaded rods 4.

[0027] In this embodiment, both ends of the two threaded rods 4 are rotated and passed through the outside of the left support 3 and the right support 2 respectively.

[0028] In this method, a drive motor 10 is fixedly installed on the side of the right support 2, a first gear 11 is fixedly installed on the output end of the drive motor 10, and a second gear 12 is fixedly installed on the right end of the two threaded rods 4. The first gear 11 and the second gear 12 are meshed with each other, and the number of teeth of the first gear 11 is smaller than that of the second gear 12.

[0029] Through the above-mentioned arrangement, the first gear 11 can be driven to rotate by starting the drive motor 10, and the second gears 12 on both sides are driven to rotate by the synchronous engagement of the first gear 11, thereby driving the threaded rod 4 at the inner end of the second gear 12 to rotate synchronously. The number of teeth of the first gear 11 is smaller than that of the second gear 12, so that the speed of the second gear 12 is reduced under the action of the meshing transmission, thereby reducing the speed of rotation of the threaded rod 4, and further ensuring the stability of the threaded rod 4 when driving the CNC machine tool saddle 5.

[0030] In this embodiment, a chassis 6 is provided outside the first gear 11 and the second gear 12 . The chassis 6 is fixedly mounted on the side wall of the right support 2 and heat dissipation holes are opened on the side wall of the chassis 6 .

[0031] Through the above-mentioned arrangement, the arrangement of the chassis 6 plays a role in protecting the transmission parts inside the chassis 6.

[0032] In this method, a rotating shaft 13 is rotatably installed on the side of the left support 3, a first stabilizing gear 14 is fixedly installed on the rotating shaft 13, a second stabilizing gear 15 is fixedly installed on the left end of the threaded rod 4, the second stabilizing gear 15 and the first stabilizing gear 14 are meshed with each other, the first stabilizing gear 14 is the same size as the first gear 11, and the second stabilizing gear 15 is the same size as the second gear 12.

[0033] By the above arrangement, the meshing arrangement of the first stabilizing gear 14 and the second stabilizing gear 15 restricts the left and right ends of the threaded rod 4 from meshing, thereby ensuring the synchronization stability of the left and right ends of the threaded rod 4 .

[0034] In this embodiment, a slot seat 51 is fixedly mounted on the bottom of the CNC machine tool saddle 5 , and a plurality of rollers 52 are rotatably mounted inside the slot seat 51 , and the rollers 52 are in contact with the upper side of the machine tool base 1 .

[0035] By the arrangement in the above manner, the bottom of the CNC machine tool saddle 5 is in rolling contact with the upper side of the machine tool base 1 through the roller 52, thereby reducing friction loss.

[0036] The working principle of the double-saddle single-drive crossbeam device for CNC machine tools provided by the utility model is as follows:

[0037] During use, by starting the drive motor 10, the drive motor 10 drives the first gear 11 to rotate, and the first gear 11 is synchronously meshed with the second gears 12 on both sides for transmission, thereby driving the threaded rods 4 on both sides to rotate synchronously. When the threaded rod 4 rotates, the CNC machine tool saddle 5 screwed thereon is driven, so that the CNC machine tool saddle 5 moves on the machine tool base 1. While the threaded rod 4 rotates, the test shaft 16 on its left end rotates synchronously. The speed sensor 17 mounted on the outside of the test shaft 16 monitors the speed of the test shaft 16 in real time. The speed of the test shaft 16 is equal to the speed of the threaded rod 4. Then the processor 19 calculates the speed values fed back by the two speed sensors 17 through the difference, and can obtain the speed difference of the two threaded rods 4. When the speed difference exceeds the normal range, the processor 19 controls the warning light 9 to light up, and shuts down the CNC machine tool in time to remind the staff to perform maintenance work.

[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A double-saddle single-drive beam device for a CNC machine tool, characterized in that: The invention comprises a machine tool base (1), wherein a right support (2) and a left support (3) are symmetrically fixedly mounted on the machine tool base (1), two threaded rods (4) are rotatably mounted between the right support (2) and the left support (3), a CNC machine tool saddle (5) is screwed onto the threaded rods (4), and a differential speed monitoring mechanism is provided on the side of the left support (3); The differential speed monitoring mechanism comprises a test shaft (16), the test shaft (16) being fixedly mounted on the left end of the threaded rod (4), a rotational sleeve being provided on the outer side of the test shaft (16), a processor (19) being provided below the rotational speed sensor (17), a signal transmission line (18) being connected between the rotational speed sensor (17) and the processor (19), a shell cover (7) being fixedly mounted on the outer side of the left support (3), a vertical rod (8) being fixedly mounted on the upper side of the shell cover (7), and a warning light (9) being fixedly mounted on the upper end of the vertical rod (8).

2. A CNC machine tool double-saddle single-drive beam device according to claim 1, characterized in that: The two ends of the two threaded rods (4) are rotated and passed through the outside of the left support (3) and the right support (2) respectively.

3. The double-saddle single-drive crossbeam device for CNC machine tools according to claim 1, characterized in that: A driving motor (10) is fixedly mounted on the side of the right support (2), a first gear (11) is fixedly mounted on the output end of the driving motor (10), and a second gear (12) is fixedly mounted on the right side ends of the two threaded rods (4), and the first gear (11) and the second gear (12) are meshed.

4. The double-saddle single-drive beam device for CNC machine tools according to claim 3, characterized in that: The first gear (11) has a smaller number of teeth than the second gear (12).

5. The double-saddle single-drive crossbeam device for CNC machine tools according to claim 3, characterized in that: A chassis (6) is provided outside the first gear (11) and the second gear (12); the chassis (6) is fixedly mounted on the side wall of the right support (2) and a heat dissipation hole is provided on the side wall of the chassis (6).

6. The double-saddle single-drive crossbeam device for CNC machine tools according to claim 1, characterized in that: A rotating shaft (13) is rotatably mounted on the side of the left support (3), a first stabilizing gear (14) is fixedly mounted on the rotating shaft (13), a second stabilizing gear (15) is fixedly mounted on the left end of the threaded rod (4), the second stabilizing gear (15) and the first stabilizing gear (14) are meshed with each other, the first stabilizing gear (14) and the first gear (11) are of the same size, and the second stabilizing gear (15) and the second gear (12) are of the same size.

7. The double-saddle single-drive crossbeam device for CNC machine tools according to claim 1, characterized in that: A slot seat (51) is fixedly mounted on the bottom of the CNC machine tool saddle (5), and a plurality of rollers (52) are rotatably mounted inside the slot seat (51), and the rollers (52) are in contact with the upper side of the machine tool base (1).

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