screw run-in machine

Abstract

The utility model discloses a screw rod running -in machine, including frame, the frame has the water platform surface, the frame is vertically provided with at least one vertical base relative to water platform surface, be equipped with a running -in machine assembly on every vertical base, the running -in machine assembly includes the guide rail of being connected in vertical base and being perpendicular to water platform surface, the screw nut fixed component of sliding connection on the guide rail, the headstock component and tailstock component of being connected in vertical base and being located the both ends of guide rail, the frame is equipped with the spray assembly at the place of being close to running -in machine assembly, the spray wheel component carries out the spray on the screw rod of running -in machine assembly to be waited. The utility model not only avoided the waste of lubricating oil, and improved the test work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lead screw testing technology, and in particular to a lead screw running-in machine. Background Technology

[0002] Ball screw pairs are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion, or torque into axial reciprocating force, while also possessing the characteristics of high precision, reversibility, and high efficiency. Due to their very low frictional resistance, ball screw pairs are widely used in various industrial equipment and precision instruments, where their function is to convert rotary motion into linear motion. Running-in is a necessary process for ball screw pairs. This process can eliminate deformation after machining or heat treatment, further improve the contact accuracy of the ball screw pair, and reduce noise. For high-speed, heavy-load ball screw pairs, running-in is even more important. Currently, most running-in machines on the market use horizontal single-screw running-in. Because the screw to be run-in is positioned horizontally, lubrication with lubricating oil requires lubrication along the axial direction of the screw in the horizontal direction. This requires a large amount of lubricating oil, and the lubricating oil drips onto the running-in machine, resulting in low utilization and waste. Utility Model Content

[0003] The purpose of this utility model is to design a screw running-in machine to overcome the shortcomings of the above-mentioned technology.

[0004] This utility model designs a screw running-in machine, including a frame with a horizontal platform. The frame is vertically arranged with at least one vertical base relative to the horizontal platform. Each vertical base is equipped with a running-in machine assembly. The running-in machine assembly includes a guide rail connected to the vertical base and perpendicular to the horizontal platform, a screw nut fixing assembly slidably connected to the guide rail, a head frame assembly and a tail frame assembly connected to the vertical base and located at both ends of the guide rail. The frame is provided with a spray assembly near the running-in machine assembly. The spray wheel assembly sprays the screw to be run-in on the running-in machine assembly.

[0005] Preferably, the nut fixing assembly includes a nut slider, a first driving member and a clamping slider. The nut slider is slidably connected to the slide rail. The first driving member is fixed to the nut slider. The two clamping sliders are slidably connected to the first driving member relative to each other. The first driving member drives the two clamping sliders to perform clamping actions. The head frame assembly includes a first base, a second base, a push cylinder, and a lower center. The first base and the second base are both slidably connected to the guide rail. The lower center is rotatably connected to the first base. The push cylinder is disposed on the second base, and the push end of the push cylinder is used to abut against one end of the lower center. The tailstock assembly includes a third base, a rotary motor, and an upper center. The upper center is rotatably connected to a second base, which is mounted on a vertical base. The output end of the rotary motor is connected to the upper center for transmission.

[0006] Further optimization involves the spray assembly including a spray head and piping. The spray head is mounted on the frame and located at the top of the running-in machine assembly. The nozzle of the spray head extends through a hose to a point close to the running-in machine assembly. The spray head is connected to the oil supply system through piping.

[0007] Further optimization involves a collection box located below the platform surface of the frame. The platform surface has a through hole communicating with the collection box. The collection box is connected to the spray head via a pipeline, allowing the lubricating oil sprayed from the spray head to fall onto the platform surface after passing through the running-in screw on the running-in machine assembly. Then, it enters the collection box through the through hole on the platform surface. The lubricating oil in the collection box then re-enters the spray head via a pipeline, which is equipped with a pump.

[0008] Further optimization involves providing an oil outlet on the collection box, and a switch valve on the oil outlet.

[0009] Further optimization involves setting up the running-in machine assembly in a one-to-one correspondence with the vertical base when there are two or more vertical bases. Spray heads are provided between two adjacent running-in machine assemblies, and each spray head has two nozzles. The two nozzles extend to the two adjacent running-in machine assemblies through hoses.

[0010] To further optimize the system, the pipeline is also equipped with control valves that correspond one-to-one with each spray head to control the operation of each spray head.

[0011] The technical advantages of this invention are as follows: The frame is equipped with at least one vertical base, and each vertical base is equipped with a running-in machine assembly, enabling at least one running-in machine assembly to simultaneously perform batch running-in tests. The frame is equipped with a spray assembly that sprays lubricating oil onto the lead screw to be run-in, thus lubricating it. Since the lead screw is vertically oriented, the lubricating oil flows axially downwards along the lead screw shaft, remaining on the lead screw shaft and nut for an extended period. This not only prevents lubricating oil from dripping onto the running-in machine but also improves the utilization rate of the lubricating oil. The lubricating oil on the lead screw drips into a collection tank below the frame. The collection tank is then connected to the spray head via pipes and a pump, allowing the lubricating oil in the collection tank to be drawn onto the spray assembly and then sprayed out, forming a lubricating oil circulation system. This not only avoids lubricating oil waste but also improves testing efficiency. Attached Figure Description

[0012] Figure 1 The overall structure of this utility model is viewed from the front. Figure 1 ; Figure 2 This is a rear view of the overall structure of this utility model; Figure 3 The overall structure of this utility model is viewed from the front. Figure 2 ; Figure 4 The overall structure of this utility model is viewed from the front. Figure 3 ; Figure 5 This is a structural diagram of the running-in machine assembly in this utility model; Figure 6 This is a structural diagram of the running-in machine assembly and the vertical base in this utility model, both of which are four in number.

[0013] In the diagram: 1. Frame; 2. Horizontal platform; 3. Vertical base; 4. Running-in machine assembly; 5. Guide rail; 6. Nut fixing assembly; 61. Nut slider; 62. First drive component; 63. Clamping slider; 7. Head frame assembly; 71. First seat; 72. Second seat; 73. Push cylinder; 74. Lower center; 8. Tail frame assembly; 81. Third seat; 82. Rotary motor; 83. Upper center; 9. Spray head; 91. Nozzle; 92. Hose; 10. Pipeline; 11. Collection box; 12. Through hole; 13. Filter screen; 14. Pump body; 15. Oil outlet; 16. Switch valve; 17. Control valve; 18. Mounting surface. Detailed Implementation

[0014] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0015] This utility model includes a frame 1, the frame 1 having a horizontal platform 2, and at least one vertical base 3 vertically arranged on the frame 1 relative to the horizontal platform 2, with a running-in machine assembly 4 mounted on each vertical base 3; such as Figure 1 , 2 As shown in Figure 3, each vertical base 3 can be a separate mounting structure fixed to the frame 1. The number of both the running-in machine assembly 4 and the vertical base 3 in the figure are two; alternatively, they can be as shown in Figure 4. Figure 6 As shown, each vertical base 3 is arranged in a row on a mounting surface 18 of the frame 1, enabling multiple running-in machines to operate simultaneously in batches. Figure 6 In the middle, there are four running-in machine assemblies 4 and four vertical bases 3, all arranged side by side.

[0016] The running-in machine assembly 4 includes a guide rail 5 connected to the vertical base 3 and perpendicular to the horizontal platform surface 2. The guide rail 5 is a linear guide rail 5, which extends along the height direction of the vertical base 3. A nut fixing assembly 6 is slidably connected to the guide rail 5. The nut fixing assembly 6 includes a nut slider 61, a first driving member 62, and a clamping slider 63. The nut slider 61 is slidably connected to the guide rail, and the first driving member 62 is fixed to the nut slider 61. In this embodiment, the first driving member 62 is a cylinder or a hydraulic cylinder, and two clamping members... The sliders 63 are slidably connected to the first driving member 62. That is, the cylinder or hydraulic cylinder drives the two clamping sliders 63 to reciprocate relative to each other, thereby realizing the clamping action to clamp the nut in the lead screw assembly. The first driving member 62 drives the two clamping sliders 63 to perform the clamping action. The lead screw nut slider 61 is manually driven to move along the guide rail 5. When the lead screw nut slider 61 moves to the appropriate position, the two clamping sliders 63 clamp the nut of the lead screw assembly to be run-in under the drive of the first driving member 62.

[0017] The vertical base 3 has a head frame assembly 7 and a tail frame assembly 8 at both ends of the guide rail 5. The head frame assembly 7 is located at the bottom of the vertical base 3, and the tail frame assembly 8 is located at the top of the vertical base 3. The head frame assembly 7 includes a first seat 71, a second seat 72, a push cylinder 73, and a lower center 74. The first seat 71 and the second seat 72 are slidably connected to the guide rail 5. The lower center 74 is rotatably connected to the first seat 71. The push cylinder is set on the second seat 72. The push end of the push cylinder is used to abut against one end of the lower center 74. When the push cylinder drives the push end to push the first seat 71 from bottom to top, the push end of the push cylinder will abut against the end of the lower center 74, thereby pushing the lower center 74 upward. The other end of the lower center 74 is used to abut against one end of the lead screw to be run-in. The tailstock assembly 8 includes a third base 81, a rotary motor 82, and an upper center 83. The upper center 83 is rotatably connected to a second base 72, which is mounted on a vertical base 3. The output end of the rotary motor 82 is connected to one end of the upper center 83, thereby driving the upper center 83 to rotate. The other end of the upper center 83 abuts against the other end of the lead screw to be run-in. The upper center 83 and the lower center 74 abut against the lead screw to be run-in from the upper and lower directions, respectively. The upper center 83 rotates, causing the lead screw to rotate. The nut on the lead screw is clamped and fixed by two clamping sliders 63. The rotation of the lead screw causes the nut to rotate. Since the nut and the lead nut slider 61 are fixed together, the lead nut slider 61 will move along the guide rail 5. The drive motor drives the lead screw to rotate in both directions, thereby causing the lead nut slider 61 to move back and forth along the guide rail 5 to perform the run-in test.

[0018] Since both the first seat 71 and the second seat 72 can slide, the distance between the upper center 83 and the lower center 74 can be adjusted, thus allowing for the testing of lead screws of different lengths.

[0019] The frame 1 is equipped with a spray assembly near the running-in machine assembly 4. The spray wheel assembly sprays the lead screw to be run-in on the running-in machine assembly 4. The spray assembly sprays lubricating oil onto the lead screw that is being run-in tested to increase the transmission lubrication between the nut and the lead screw. The spray assembly includes a spray head 9 and a pipeline 10. The spray head 9 is mounted on the frame 1 and located on top of the running-in machine assembly 4. The spray head 9 includes a nozzle 91 and a drive seat for driving the nozzle 91 to spray. The drive seat is fixed to the frame 1. A hose 92 or a corrugated pipe is provided between the nozzle 91 and the drive seat for arbitrarily extending and adjusting the direction of the nozzle 91. Typically, the nozzle 91 of the spray head 9 extends through the hose 92 to a position close to the lead screw to be run-in, spraying oil onto the lead screw. In addition, the spray head 9 is connected to an oil supply system through the pipeline 10. The oil supply system can be an external oil supply device or an oil supply device installed on the frame 1. This utility model uses components such as a collection box 11, pipeline 10, and pump body 14 installed on the frame 1 to realize the recycling of lubricating oil.

[0020] A collection box 11 is installed below the platform surface 2 on the frame 1. The platform surface 2 has a through hole 12 communicating with the collection box 11. A filter screen 13 is installed on the through hole 12 to prevent debris from falling into the collection box 11. The collection box 11 is connected to the spray head 9 through the pipeline 10. The frame 1 is also equipped with a pump body 14 connected to the pipeline 10. The pump body 14 draws the lubricating oil in the collection box 11 to the spray head 9. The lubricating oil sprayed from the spray head 9 falls onto the platform surface 2 after passing through the running-in screw on the running-in machine assembly 4. Then, it enters the collection box 11 through the through hole 12 of the platform surface 2. The lubricating oil in the collection box 11 re-enters the spray head 9 through the pump body 14 and the pipeline 10, thus forming a self-circulation of lubricating oil and avoiding lubricating oil waste.

[0021] Furthermore, the collection box 11 is provided with an oil outlet 15, and the oil outlet 15 is provided with a switch valve 16. When the switch valve 16 is opened, the lubricating oil in the collection box 11 will flow out from the oil outlet 15, which makes it convenient to replace the lubricating oil in the collection box 11, that is, to replace the lubricating oil of the entire running-in machine.

[0022] Furthermore, when there are two or more vertical bases 3, the running-in machine assembly 4 is set up in a one-to-one correspondence with the vertical base 3, and a spray head 9 is provided between two adjacent running-in machine assemblies 4. Each spray head 9 has two nozzles 91, and the two nozzles 91 extend to the two adjacent running-in machine assemblies 4 through hoses 92 respectively. That is, one spray head 9 can serve two running-in machine assemblies 4, reducing the number of spray heads 9 and improving space utilization.

[0023] Furthermore, the pipeline 10 is also equipped with a control valve 17 corresponding to each of the spray heads 9 to control the operation of each spray head 9. That is, each spray head 9 can be individually controlled to switch on or off or control the flow rate. The specific connection method and working principle of the pipeline 10 and the control valve 17 are conventional technologies and will not be described in detail here.

[0024] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A screw running-in machine, characterized in that, The machine includes a frame (1) having a horizontal platform (2). The frame (1) is provided with at least one vertical base (3) perpendicular to the horizontal platform (2). Each vertical base (3) is provided with a running-in machine assembly (4). The running-in machine assembly (4) includes a guide rail (5) connected to the vertical base (3) and perpendicular to the horizontal platform (2), a screw nut fixing assembly (6) slidably connected to the guide rail (5), a head frame assembly (7) connected to the vertical base (3) and located at both ends of the guide rail (5), and a tail frame assembly (8). The frame (1) is provided with a spray assembly near the running-in machine assembly (4). The spray assembly sprays the screw to be run-in on the running-in machine assembly (4).

2. The screw running-in machine according to claim 1, characterized in that, The nut fixing assembly (6) includes a nut slider (61), a first driving member (62), and a clamping slider (63). The nut slider (61) is slidably connected to the slide rail. The first driving member (62) is fixed to the nut slider (61). The two clamping sliders (63) are slidably connected to the first driving member (62) relative to each other. The first driving member (62) drives the two clamping sliders (63) to perform clamping actions. The head frame assembly (7) includes a first base (71), a second base (72), a push cylinder (73), and a lower center (74). The first base (71) and the second base (72) are slidably connected to the guide rail (5). The lower center (74) is rotatably connected to the first base (71). The push cylinder (73) is disposed on the second base (72). The pushing end of the push cylinder (73) is used to abut against one end of the lower center (74). The tailstock assembly (8) includes a third seat (81), a rotary motor (82), and an upper center (83). The upper center (83) is rotatably connected to the second seat (72), which is mounted on the vertical base (3). The output end of the rotary motor (82) is connected to the upper center (83) in a transmission connection.

3. The screw running-in machine according to claim 2, characterized in that, The spray assembly includes a spray head (9) and a pipeline (10). The spray head (9) is mounted on the frame (1) and located on top of the running-in machine assembly (4). The nozzle (91) of the spray head (9) extends through a hose (92) to a point close to the running-in machine assembly (4). The spray head (9) is connected to the oil supply system through the pipeline (10).

4. The screw running-in machine according to claim 3, characterized in that, The frame (1) is provided with a collection box (11) located below the platform surface (2). The platform surface (2) is provided with a through hole (12) communicating with the collection box (11). The collection box (11) is connected to the spray head (9) through a pipe (10). The lubricating oil sprayed by the spray head (9) falls onto the platform surface (2) after passing through the running-in screw on the running-in machine assembly (4). Then it enters the collection box (11) through the through hole (12) of the platform surface (2). The lubricating oil in the collection box (11) enters the spray head (9) again through the pipe (10). The pipe (10) is provided with a pump body (14).

5. The screw running-in machine according to claim 4, characterized in that, The collection box (11) is provided with an oil outlet (15), and the oil outlet (15) is provided with a switch valve (16).

6. The screw running-in machine according to claim 4, characterized in that, When there are two or more vertical bases (3), the running-in machine assembly (4) is set in a one-to-one correspondence with the vertical base (3), and a spray head (9) is provided between two adjacent running-in machine assemblies (4). Each spray head (9) has two nozzles (91), and the two nozzles (91) extend to the two adjacent running-in machine assemblies (4) through hoses (92).

7. The screw running-in machine according to claim 6, characterized in that, The pipeline (10) is also equipped with control valves (17) corresponding to the spray heads (9) to control the operation of each spray head (9).

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