Safe ejector rod mechanism of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a numerical control machine tool safety ejector rod mechanism which comprises a support and a supporting rod, the bottom of the support is slidably connected with a support through a guide rail, a sleeve is arranged at the top end of the support, and an electric push rod is fixedly installed on the inner wall of the top end of the support through a backup plate. A telescopic rod of the electric push rod is connected with the top of a sleeve through a connecting plate, a sealing assembly is arranged on one side of the sleeve, and the interior of the sleeve is rotationally connected with a supporting shaft through a bearing. The electric push rod drives the sleeve to drive the tip to horizontally move, the tip can limit one side of a workpiece and can be suitable for workpieces of different sizes, manual operation is not needed, manpower and time are saved, the guide rail can support and guide the sleeve through the support, and the stability of the sleeve can be kept; buffering can be provided between the center and the workpiece through the damping gas spring.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a safety ejector rod mechanism for a numerical control machine tool. Background Technique

[0002] A numerical control machine tool is short for a numerically controlled machine tool, which is an automated machine tool equipped with a program control system. The control system can logically process a program with control codes or other symbolic instructions, decode it, represent it in coded numbers, input it into the numerical control device through an information carrier, and after arithmetic processing, the numerical control device issues various control signals to control the actions of the machine tool, and automatically processes parts according to the shape and size required by the drawing.

[0003] The "machine tool tailstock with a center rotation structure" disclosed in its application number "202121315870.X" "includes a machine tool tailstock main body, and also includes a mounting base and a rotating center. The bottom of the machine tool tailstock main body is welded and fixed with the mounting base. The interior of the machine tool tailstock main body is constructed with a lubricating groove, a rotating bearing is sleeved in the lubricating groove, and a rotating center is rotatably connected to the inner circumference of the rotating bearing". In the utility model, the rotating center can rotate within the inner circumference of the rotating bearing, without friction with the workpiece, reducing the rotation resistance of the workpiece, and making the service life of the center longer; through the provided dust-proof ring and dust-proof circle, dust is prevented from entering the gap between the rotating center and the machine tool tailstock main body, and the dust-proof effect is good; through the provided oil injection pipe and oil injection cap, it is convenient to inject lubricating oil into the lubricating groove to ensure the normal rotation of the rotating center; rotating the rotating plate drives the adjusting rod to rotate in the threaded groove, so that the adjusting rod moves horizontally, thereby adjusting the horizontal position of the rotating center to adapt to the clamping and fixing of workpieces of different lengths and sizes.

[0004] However, the above method still has the following defects: By rotating the rotating plate to move the adjusting rod horizontally, workpieces of different sizes can be fixed, but it requires manual operation, which is laborious and time-consuming, and it is difficult to provide buffering between the center and the workpiece during the clamping process, easily causing damage to the center and poor safety. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a safety ejector rod mechanism for a numerical control machine tool, which has the advantages of convenient operation, saving manpower and time, and good safety, and solves the problems raised in the above background technique.

[0006] The utility model provides the following technical solution: a safety ejector rod mechanism for a numerical control machine tool, which includes a bracket and a support rod. The bottom of the bracket is slidably connected with a support through a guide rail. A sleeve is arranged at the top end of the support. An electric push rod is fixedly installed on the inner wall of the top end of the bracket through a backing plate. The telescopic rod of the electric push rod is connected with the top of the sleeve through a connecting plate. A sealing assembly is arranged on one side of the sleeve. A support shaft is rotatably connected to the inside of the sleeve through a bearing. One end of the support shaft is fixedly provided with a support disk. One side of the support disk is connected with a connecting disk through a torque transmission assembly. Three damping air springs are snap-connected to one side of the connecting disk. A center point is arranged on the other side of the connecting disk.

[0007] As a preferred technical solution of the utility model, positioning holes are respectively arranged at the four corners of the bottom end of the bracket. The bottom end of the guide rail is fixedly connected with the inner wall of the bottom end of the bracket. Baffles are fixedly arranged on both sides of the guide rail.

[0008] As a preferred technical solution of the utility model, a slider is fixedly arranged at the bottom of the support. The support is slidably connected with the guide rail through the slider.

[0009] As a preferred technical solution of the utility model, the sealing assembly includes a retaining ring, a sealing gasket and a sealing ring. A sealing gasket is snap-connected to one side of the retaining ring. One side of the retaining ring is fixedly connected with the sleeve through a screw one. A sealing ring is snap-connected to the middle of the retaining ring. The support shaft is rotatably connected with the sealing ring.

[0010] As a preferred technical solution of the utility model, an oil inlet pipe is fixedly arranged at the top of the other side of the sleeve. An oil outlet pipe is fixedly arranged at the bottom of the other side of the sleeve. Sealing nuts are threadedly connected to both the oil inlet pipe and the oil outlet pipe.

[0011] As a preferred technical solution of the utility model, a push plate is fixedly arranged on one side of the damping air spring. A clamping column is fixedly arranged at the telescopic end of the damping air spring. Column holes snap-connected with the clamping column are respectively arranged on one side of the support disk and one side of the connecting disk.

[0012] As a preferred technical solution of the utility model, the torque transmission assembly includes a square sleeve, a square rod, a mounting disk one, a mounting disk two and a screw two. The square rod is slidably connected to the inside of the square sleeve. A mounting disk one is arranged at one end of the square sleeve. A mounting disk two is arranged at one end of the square rod. The mounting disk one is connected with the connecting disk through a screw two. The mounting disk two is connected with the support disk through a screw two.

[0013] As a preferred technical solution of the utility model, one end of the center point is fixedly connected with a support rod. One end of the support rod is fixedly connected with the middle of the other side of the connecting disk.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The backing plate can support the electric push rod. By driving the sleeve with the electric push rod, it can drive the center point to move horizontally. The center point can limit one side of the workpiece and is applicable to workpieces of different sizes. It does not require manual operation, saving manpower and time. The guide rail can support and guide the sleeve through the support, maintaining its stability. The damping gas spring can provide buffering between the center point and the workpiece, reducing the impact force between the center point and the workpiece, preventing damage to the center point and the workpiece, being safe and reliable, and not prone to vibration. The torque transmission component can prevent the damping gas spring from bearing torsion, avoiding bending deformation of the damping gas spring. The damping gas spring is installed in a clamping manner, facilitating its disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is one of the structural schematic diagrams of the utility model;

[0017] Figure 2 is the second structural schematic diagram of the utility model;

[0018] Figure 3 is the structural schematic diagram of the sealing component of the utility model;

[0019] Figure 4 is the structural schematic diagram of the torque transmission component of the utility model;

[0020] Figure 5 is the exploded structural schematic diagram of the torque transmission component of the utility model.

[0021] In the figure: 1, bracket; 2, positioning hole; 3, guide rail; 4, baffle; 5, backing plate; 6, electric push rod; 7, connecting plate; 8, sleeve; 9, sealing component; 901, retaining ring; 902, sealing gasket; 903, screw one; 904, sealing ring; 10, support shaft; 11, oil inlet pipe; 12, oil outlet pipe; 13, sealing nut; 14, support; 15, slider; 16, support disk; 17, torque transmission component; 1701, square sleeve; 1702, square rod; 1703, mounting plate one; 1704, mounting plate two; 1705, screw two; 18, damping gas spring; 19, push plate; 20, clamping post; 21, connecting disk; 22, column hole; 23, support rod; 24, center point. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 , a safety ejector rod mechanism for a numerical control machine tool, including a bracket 1 and a support rod 23. The bottom of the bracket 1 is slidably connected with a support 14 through a guide rail 3. A sleeve 8 is provided at the top end of the support 14. The inner wall of the top end of the bracket 1 is fixedly installed with an electric push rod 6 through a backing plate 5. The backing plate 5 can support the electric push rod 6. The telescopic rod of the electric push rod 6 is connected to the top of the sleeve 8 through a connecting plate 7. The telescopic rod of the electric push rod 6 can support the sleeve 8 through the connecting plate 7. By driving the sleeve 8 with the electric push rod 6, its horizontal displacement can be achieved. A sealing assembly 9 is provided on one side of the sleeve 8. A support shaft 10 is rotatably connected to the inside of the sleeve 8 through a bearing. A support disc 16 is fixedly provided at one end of the support shaft 10. One side of the support disc 16 is connected to a connecting disc 21 through a torque transmission assembly 17. A damping gas spring 18 is snap-connected to one side of the connecting disc 21. There are three damping gas springs 18. A center point 24 is provided on the other side of the connecting disc 21. The workpiece can be supported by the center point 24. When the center point 24 contacts the workpiece, the damping gas spring 18 can provide buffering for it;

[0024] In this embodiment, preferably, the sealing assembly 9 includes a retaining ring 901, a gasket 902 and a sealing ring 904. A gasket 902 is snap-connected to one side of the retaining ring 901. One side of the retaining ring 901 is fixedly connected to the sleeve 8 through a screw 903. A sealing ring 904 is snap-connected to the middle of the retaining ring 901. The support shaft 10 is rotatably connected to the sealing ring 904. The support shaft 10 can pass through the retaining ring 901. The gasket 902 and the sealing ring 904 can ensure the sealing between the retaining ring 901 and the sleeve 8 and the support shaft 10;

[0025] In this embodiment, preferably, the torque transmission assembly 17 includes a square sleeve 1701, a square rod 1702, a first mounting disc 1703, a second mounting disc 1704, and a second screw 1705. The square rod 1702 is slidably connected inside the square sleeve 1701. One end of the square sleeve 1701 is provided with the first mounting disc 1703, and one end of the square rod 1702 is provided with the second mounting disc 1704. The first mounting disc 1703 is connected to the connecting disc 21 through the second screw 1705, and the second mounting disc 1704 is connected to the support disc 16 through the second screw 1705. By using the square rod 1702 and the square sleeve 1701, the rigid connection between the connecting disc 21 and the support disc 16 is avoided, and the distance between the connecting disc 21 and the support disc 16 can be adjusted. The square rod 1702 and the square sleeve 1701 can transmit torque and prevent the damping gas spring 18 from bearing torsion;

[0026] In this embodiment, preferably, positioning holes 2 are provided at the four corners of the bottom end of the bracket 1. The bracket 1 can be fixed on the numerically controlled machine tool through the positioning holes 2. The bottom end of the guide rail 3 is fixedly connected to the inner wall of the bottom end of the bracket 1. Baffles 4 are fixedly provided on both sides of the guide rail 3. By adding lubricant into the guide rail 3, the baffle 4 can prevent the lubricant from flowing out. A slider 15 is fixedly provided at the bottom of the support 14, and the support 14 is slidably connected to the guide rail 3 through the slider 15. The slider 15 can prevent the support 14 from loosening and falling off;

[0027] In this embodiment, preferably, an oil inlet pipe 11 is fixedly provided at the top of the other side of the sleeve 8, and an oil outlet pipe 12 is fixedly provided at the bottom of the other side of the sleeve 8. Sealing nuts 13 are threadedly connected to both the oil inlet pipe 11 and the oil outlet pipe 12. The lubricating oil can be input and output through the oil inlet pipe 11 and the oil outlet pipe 12, and the sealing nuts 13 can block the oil inlet pipe 11 and the oil outlet pipe 12;

[0028] In this embodiment, preferably, a push plate 19 is fixedly provided on one side of the damping gas spring 18, and a clamping post 20 is fixedly provided at the telescopic end of the damping gas spring 18. Column holes 22 engaged with the clamping post 20 are provided on one side of both the support disc 16 and the connecting disc 21. By engaging the clamping post 20 with the column hole 22, the stability of the damping gas spring 18 can be maintained, and it is convenient to install and disassemble the damping gas spring 18;

[0029] In this embodiment, preferably, one end of the center point 24 is fixedly connected to a support rod 23, and one end of the support rod 23 is fixedly connected to the middle of the other side of the connecting disc 21. The support rod 23 can provide stable support between the connecting disc 21 and the center point 24.

[0030] In use, the operator first fixes the bracket 1 on the numerical control machine tool through the positioning holes 2. The bracket 1 can support the electric push rod 6 through the backing plate 5. The telescopic rod of the electric push rod 6 can support the sleeve 8 through the connecting plate 7. The sleeve 8 can support the center point 24 through the support shaft 10. When it is necessary to limit the workpiece by the center point 24, the operator drives the sleeve 8 to displace through the electric push rod 6. The guide rail 3 can support and guide the sleeve 8 through the support 14, so that the center point 24 can limit one side of the workpiece. When the center point 24 contacts the workpiece, the pressure can be transmitted to the damping gas spring 18 under the pressure. The telescopic rod of the damping gas spring 18 can contract under pressure, providing buffering between the center point 24 and the workpiece, reducing the impact force between the center point 24 and the workpiece, preventing damage to the center point 24 and the workpiece, being safe and reliable. Since the square rod 1702 of the torque transmission component 17 is slidably connected to the square sleeve 1701, it will not hinder the telescopic movement of the telescopic rod of the damping gas spring 18;

[0031] When the workpiece is rotated by the numerical control machine tool, the center point 24 can rotate with the workpiece through the support shaft 10. The square sleeve 1701 and the square rod 1702 can transmit torque, preventing the damping gas spring 18 from bearing torsion, avoiding bending deformation of the damping gas spring 18, and ensuring the sealing ability of the damping gas spring 18. The operator can input lubricating oil into the sleeve 8 through the oil inlet pipe 11 to lubricate the support shaft 10. When it is necessary to disassemble the damping gas spring 18 for disassembly and replacement, the operator pushes the telescopic rod of the damping gas spring 18 through the push plate 19 to make it contract, takes out the clamping post 20 from the inside of the post hole 22, and then the damping gas spring 18 can be disassembled. Then, the clamping post 20 of the damping gas spring 18 to be replaced is inserted into the post hole 22. Under the elastic force of the damping gas spring 18, the clamping post 20 can be prevented from falling off, and it can be quickly installed and disassembled.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety ejector rod mechanism for a numerical control machine tool, comprising a bracket (1) and a support rod (23), characterized in that: The bottom of the bracket (1) is slidably connected with a support (14) through a guide rail (3). The top end of the support (14) is provided with a sleeve (8). The inner wall of the top end of the bracket (1) is fixedly installed with an electric push rod (6) through a backing plate (5). The telescopic rod of the electric push rod (6) is connected to the top of the sleeve (8) through a connecting plate (7). One side of the sleeve (8) is provided with a sealing assembly (9). The inside of the sleeve (8) is rotatably connected with a support shaft (10) through a bearing. One end of the support shaft (10) is fixedly provided with a support disk (16). One side of the support disk (16) is connected with a connecting disk (21) through a torque transmission assembly (17). One side of the connecting disk (21) is snap-connected with a damping gas spring (18). There are three damping gas springs (18). The other side of the connecting disk (21) is provided with a center point (24).

2. The safety ejector rod mechanism of the numerical control machine tool according to claim 1, wherein: Positioning holes (2) are formed at the four corners of the bottom end of the bracket (1). The bottom end of the guide rail (3) is fixedly connected with the inner wall of the bottom end of the bracket (1). Baffles (4) are fixedly provided on both sides of the guide rail (3).

3. The safety ejector mechanism for a numerically controlled machine tool according to claim 1, characterized in that: The bottom of the support (14) is fixedly provided with a slider (15). The support (14) is slidably connected with the guide rail (3) through the slider (15).

4. The safety ejector rod mechanism of the numerical control machine tool according to claim 1, characterized in that: The sealing assembly (9) includes a retaining ring (901), a gasket (902) and a sealing ring (904). One side of the retaining ring (901) is snap-connected with the gasket (902). One side of the retaining ring (901) is fixedly connected with the sleeve (8) through a screw one (903). The middle of the retaining ring (901) is snap-connected with the sealing ring (904). The support shaft (10) is rotatably connected with the sealing ring (904).

5. The safety ejector rod mechanism of the numerical control machine tool according to claim 1, characterized in that: An oil inlet pipe (11) is fixedly provided at the top of the other side of the sleeve (8). An oil outlet pipe (12) is fixedly provided at the bottom of the other side of the sleeve (8). Sealing nuts (13) are threadedly connected to both the oil inlet pipe (11) and the oil outlet pipe (12).

6. The safety ejector mechanism for a numerical control machine tool according to claim 1, characterized in that: One side of the damping gas spring (18) is fixedly provided with a push plate (19). The telescopic end of the damping gas spring (18) is fixedly provided with a clamping post (20). Column holes (22) which are snap-connected with the clamping post (20) are formed on one side of the support disk (16) and one side of the connecting disk (21).

7. The safety ejector rod mechanism for a numerically controlled machine tool according to claim 1, wherein: The torque transmission assembly (17) includes a square sleeve (1701), a square rod (1702), a mounting disk one (1703), a mounting disk two (1704) and a screw two (1705). The square rod (1702) is slidably connected inside the square sleeve (1701). One end of the square sleeve (1701) is provided with the mounting disk one (1703). One end of the square rod (1702) is provided with the mounting disk two (1704). The mounting disk one (1703) is connected to the connecting disk (21) through the screw two (1705). The mounting disk two (1704) is connected to the support disk (16) through the screw two (1705).

8. The safety ejector mechanism for a numerically controlled machine tool according to claim 1, characterized in that: One end of the center point (24) is fixedly connected with a support rod (23). One end of the support rod (23) is fixedly connected with the middle of the other side of the connecting disk (21).

Images