Trapezoidal lead screw pair running-in spraying structure

Abstract

The utility model relates to the technical field of trapezoid lead screws, in particular to a trapezoid lead screw pair running-in spraying structure which comprises a mounting frame and a reciprocating lead screw, the reciprocating lead screw is rotationally connected between the two ends of the mounting frame, the reciprocating lead screw is in threaded connection with a screw cap, a sliding groove is formed in the mounting frame, and the sliding groove is in threaded connection with the reciprocating lead screw. An adjusting part is mounted on the mounting frame and comprises a sliding plate, clamping plates, a push rod, a spring, an extrusion cavity, a rotating shaft and a rotating wheel, the sliding plate is slidably connected to the lower surface of the mounting frame, the two clamping plates are slidably connected to the two sides of the sliding plate respectively, and the push rod is slidably connected to the sliding plate; according to the utility model, as the pull force of the spring on the push rod is increased, the friction force between the mounting racks is increased, and the load on the movement of the screw cap is also increased, so that the adjustment effect on the load of the screw cap can be increased or reduced according to the requirement of the reciprocating lead screw and screw cap running-in experiment.

Description

Technical Field

[0001] The utility model relates to the technical field of trapezoidal screws, in particular to a running-in spray structure of a trapezoidal screw pair. Background Art

[0002] The lead screw pair is a spiral transmission component composed of a lead screw and a nut that can convert rotational motion into linear motion. The trapezoidal lead screw is a product that can complete the thread and knurling in one go during the whirlwind milling lead screw processing, with high process efficiency, low cost and not very high processing precision requirements. Its structural design ideas and solutions have good promotion and application value.

[0003] In the prior art, the trapezoidal lead screw pair is prone to wear of the lead screw nut during the running-in process, but the structure for adjusting the nut load makes it impossible for the thread to be lifted according to the change of the load during the running-in test of the trapezoidal lead screw pair. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: in the prior art, the trapezoidal screw pair is prone to cause wear of the screw nut during the running-in process, but the structure for adjusting the nut load makes it impossible for the thread to be lifted according to the change of the load during the running-in test of the trapezoidal screw pair, and a running-in spray structure for the trapezoidal screw pair is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A trapezoidal screw pair running-in spray structure, comprising a mounting frame and a reciprocating screw, wherein the reciprocating screw is rotatably connected between two ends of the mounting frame, a screw cap is threadedly connected on the reciprocating screw, and a slide groove is provided on the mounting frame;

[0007] An adjusting component is installed on the mounting frame, and the adjusting component includes a slide plate, a clamping plate, a push rod, a spring, an extrusion chamber, a rotating shaft, and a rotating wheel. The slide plate is slidably connected to the lower surface of the mounting frame, and the two clamping plates are slidably connected to both sides of the slide plate respectively. The push rod is slidably connected to the slide plate, and a tooth pattern is provided at the lower end of the push rod. The extrusion chamber is threadedly connected to the push rod, the spring is rotatably connected between the slide plate and the extrusion chamber, and the two rotating wheels are rotatably connected to the slide plate through the rotating shaft respectively.

[0008] Preferably, the adjusting component further comprises a spray chamber, the spray chamber is fixedly connected to one of the clamping plates, and a circular hole is opened on one side wall of the spray chamber.

[0009] Preferably, one end of the slide plate is fixedly connected to an elliptical cavity, a piston is slidably connected in the elliptical cavity, one of the rotating shafts is provided with a reciprocating thread pattern, and the piston is threadedly connected to the rotating shaft.

[0010] Preferably, a connecting pipe is fixedly connected between the elliptical cavity and the spray cavity, and a one-way valve is installed on the connecting pipe.

[0011] Preferably, the two clamping plates are respectively fixedly connected with an L-shaped plate, and the L-shaped plate is rotatably connected with a screw rod.

[0012] Preferably, a sleeve is threadedly connected between the two screw rods.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. As the tension of the spring on the push rod increases, the friction between the mounting frame increases, and the load on the movement of the screw nut also increases, so that the load on the screw nut can be increased or decreased according to the needs of the reciprocating screw and screw nut running-in experiment.

[0015] 2. When the slide plate moves, it can drive the rotating wheel and the rotating shaft to rotate. When the rotating shaft rotates continuously, it can drive the piston to move back and forth in the elliptical cavity. The piston can squeeze the lubricating oil in the elliptical cavity and transmit it to the spray cavity through the connecting pipe, and spray the surface of the reciprocating screw for lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front structural schematic diagram of a trapezoidal screw pair running-in spray structure proposed by the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of an elliptical cavity of a trapezoidal screw pair running-in spray structure proposed by the utility model;

[0018] Figure 3 for Figure 1 A partial enlarged view of middle A.

[0019] In the figure: 1 mounting frame, 2 screw cap, 3 reciprocating screw, 4 connecting pipe, 5 elliptical cavity, 6 extrusion cavity, 7 piston, 8 rotating shaft, 9 push rod, 10 spring, 11 slide plate, 12 rotating wheel, 13 clamping plate, 14 spray cavity, 15 sleeve, 16 screw rod, 17 L-type plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0022] Reference Figure 1-Figure 3 A trapezoidal screw pair running-in spray structure includes a mounting frame 1 and a reciprocating screw 3, the reciprocating screw 3 is rotatably connected between the two ends of the mounting frame 1, a screw nut 2 is threadedly connected to the reciprocating screw 3, and a slide groove is opened on the mounting frame 1, and the slide groove is used for the movement of the clamping plate 13.

[0023] The mounting frame 1 is provided with an adjusting component, which includes a slide plate 11, a clamping plate 13, a push rod 9, a spring 10, an extrusion chamber 6, a rotating shaft 8, and a rotating wheel 12. The slide plate 11 is slidably connected to the lower surface of the mounting frame 1, and two clamping plates 13 are slidably connected to both sides of the slide plate 11, respectively. The push rod 9 is slidably connected to the slide plate 11, and a tooth pattern is provided at the lower end of the push rod 9. The extrusion chamber 6 is threadedly connected to the push rod 9, and the spring 10 is rotatably connected between the slide plate 11 and the extrusion chamber 6. As the extrusion chamber 6 moves up and down, the spring 10 can be stretched, and the tension state of the spring 10 is adjusted. The push rod 9 exerts an extruding force on the mounting frame 1, thereby adjusting the moving load on the screw nut 2. The two wheels 12 are rotatably connected to the slide plate 11 through the rotating shaft 8. The adjusting component also includes a spray chamber 14, which is fixedly connected to one of the clamping plates 13. A circular hole is provided on one side wall of the spray chamber 14. The upper end of the clamping plate 13 is arranged in an arc shape and can match the outer surface of the screw nut 2. L-shaped plates 17 are fixedly connected to the two clamping plates 13, and a screw rod 16 is rotatably connected to the L-shaped plate 17. A sleeve 15 is threadedly connected between the two screw rods 16.

[0024] One end of the slide plate 11 is fixedly connected to an elliptical cavity 5, a piston 7 is slidably connected inside the elliptical cavity 5, a reciprocating thread pattern is provided on one of the rotating shafts 8, the piston 7 is threadedly connected to the rotating shaft 8, a connecting pipe 4 is fixedly connected between the elliptical cavity 5 and the spraying cavity 14, and a one-way valve is installed on the connecting pipe 4.

[0025] In the utility model, in the prior art, when the running-in test is performed between the screw cap 2 and the reciprocating screw 3, when the load on the screw cap 2 needs to be increased, the sleeve 15 is first rotated, and the two screw rods 16 can be driven to move in the middle with the rotation of the sleeve 15. When the clamping plate 13 moves with the screw rod 16 through the L-shaped plate 17, the clamping plate 13 can clamp the screw cap 2. Then, when the extrusion chamber 6 is rotated, the extrusion chamber 6 moves down when the push rod 9 and stretches the spring 10. After the spring 10 is stretched, the extrusion chamber 6 and the push rod 9 are pushed to the left. The tension on the push rod 9 increases, so that the upper end of the push rod 9 can be tightly squeezed on the bottom wall of the mounting frame 1, so that when the reciprocating screw 3 rotates and drives the screw nut 2 to move, the screw nut 2 can drive the clamping plate 13 and the slide plate 11 and the push rod 9 to move. Since the tension of the spring 10 on the push rod 9 increases, the friction between the mounting frame 1 is increased, and the load on the movement of the screw nut 2 is also increased, so that according to the needs of the running-in experiment of the reciprocating screw 3 and the screw nut 2, the load on the screw nut 2 can be increased or reduced.

[0026] The upper end of the rotating wheel 12 is fitted with the bottom wall of the mounting frame 1. When the slide plate 11 moves, it can drive the rotating wheel 12 and the rotating shaft 8 to rotate. When the rotating shaft 8 rotates continuously, it can drive the piston 7 to reciprocate in the elliptical cavity 5. At this time, when the piston 7 moves in the direction away from the slide plate 11, the one-way valve connected between the elliptical cavity 5 and the external water tank is closed, and the one-way valve on the connecting pipe 4 is opened. Therefore, the piston 7 can squeeze the lubricating oil in the elliptical cavity 5 and transmit it to the spray cavity 14 through the connecting pipe 4, and spray the surface of the reciprocating screw 3 for lubrication. When the piston 7 moves in the opposite direction, the one-way valve on the connecting pipe 4 is closed, and the one-way valve connected between the elliptical cavity 5 and the external water tank is opened, and the lubricating oil in the water tank enters the elliptical cavity 5, so that the piston 7 can squeeze the lubricating oil in the elliptical cavity 5 into the spray cavity 14 again.

[0027] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A trapezoidal screw pair running-in spray structure, comprising a mounting frame (1) and a reciprocating screw (3), characterized in that: The reciprocating screw (3) is rotatably connected between the two ends of the mounting frame (1), a screw nut (2) is threadedly connected to the reciprocating screw (3), and a slide groove is provided on the mounting frame (1); An adjusting component is installed on the mounting frame (1), and the adjusting component includes a slide plate (11), a clamping plate (13), a push rod (9), a spring (10), an extrusion chamber (6), a rotating shaft (8), and a rotating wheel (12). The slide plate (11) is slidably connected to the lower surface of the mounting frame (1), and the two clamping plates (13) are respectively slidably connected to the two sides of the slide plate (11). The push rod (9) is slidably connected to the slide plate (11), and a tooth pattern is provided at the lower end of the push rod (9). The extrusion chamber (6) is threadedly connected to the push rod (9), and the spring (10) is rotationally connected between the slide plate (11) and the extrusion chamber (6). The two rotating wheels (12) are rotationally connected to the slide plate (11) through the rotating shaft (8).

2. The trapezoidal screw pair running-in spray structure according to claim 1 is characterized in that The regulating component also includes a spray chamber (14), which is fixedly connected to one of the clamping plates (13), and a circular hole is opened on one side wall of the spray chamber (14).

3. A trapezoidal screw pair running-in spray structure according to claim 2, characterized in that: One end of the slide plate (11) is fixedly connected to an elliptical cavity (5), a piston (7) is slidably connected in the elliptical cavity (5), one of the rotating shafts (8) is provided with a reciprocating thread pattern, and the piston (7) is threadedly connected to the rotating shaft (8).

4. A trapezoidal screw pair running-in spray structure according to claim 3, characterized in that: A connecting pipe (4) is fixedly connected between the elliptical cavity (5) and the spray cavity (14), and a one-way valve is installed on the connecting pipe (4).

5. The trapezoidal screw pair running-in spray structure according to claim 1, characterized in that: The two clamping plates (13) are respectively fixedly connected with an L-shaped plate (17), and the L-shaped plate (17) is rotatably connected with a screw rod (16).

6. A trapezoidal screw pair running-in spray structure according to claim 5, characterized in that: A sleeve (15) is threadedly connected between the two screw rods (16).

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