Lead screw test platform

Abstract

The utility model discloses a lead screw test platform which comprises a rack and a test platform transmission system fixedly installed on the rack, the test platform transmission system comprises a lathe spindle, a servo motor, an adjustable lead screw nut fixing seat and a linear guide rail, the lathe spindle is used for installing a lead screw and is driven by the servo motor so as to drive the lead screw to rotate, and the adjustable lead screw nut fixing seat is driven by the linear guide rail to rotate. The linear guide rail is fixedly installed on the machine frame, the adjustable lead screw nut fixing seat comprises a linear guide rail fixing base, movable blocks and a nut fixing block, the linear guide rail fixing base is slidably connected along the linear guide rail, a kidney-shaped round hole is formed in the linear guide rail fixing base, and the two movable blocks which are adjustably installed along the kidney-shaped round hole are installed on the kidney-shaped round hole through bolts. A nut fixing block is fixedly installed on the movable block and used for fixedly installing a lead screw nut. The tool is simple in structure, the lead screw and the lead screw nut are convenient to assemble and disassemble, the tool is suitable for lead screws and lead screw nuts of various sizes, the application range is wide, machining cost is saved, and machining efficiency is improved.

Description

Technical Field

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

[0002] Currently, the equipment suffers from frequent lead screw failures, high new purchase costs, lack of diagnostic standards after independent repairs, low repair rate during machine testing, and waste due to bearing damage.

[0003] Therefore, it is necessary to design a lead screw testing platform. The existing lead screw testing platform has certain shortcomings that need to be improved: the existing lead screw testing platform has a complex structure, a small scope of application, and is only used for lead screws of a special size. In addition, the existing lead screw testing platform is cumbersome to disassemble and assemble, and has high processing costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a lead screw testing platform.

[0005] The present invention adopts the following technical solution:

[0006] A lead screw testing platform includes a frame and a transmission system fixedly mounted on the frame. The transmission system includes a lathe spindle, a servo motor, an adjustable lead screw nut mounting base, and a linear guide. The lead screw is mounted on the lathe spindle and driven by the servo motor to rotate. The linear guide is fixedly mounted on the frame. The adjustable lead screw nut mounting base includes a linear gauge mounting base, a movable block, and a nut mounting block. The linear gauge mounting base is slidably connected along the linear guide. The linear gauge mounting base has an oblong hole, and two movable blocks that are adjusted and mounted along the oblong hole are bolted to the oblong hole. The nut mounting block is fixedly mounted on the movable block for fixing the lead screw nut.

[0007] Preferably, the nut fixing block is fixedly installed with a lead screw nut by bolts.

[0008] Preferably, the bottom of the wire gauge fixing base is fixed with a slider by bolts, and the wire gauge fixing base is slidably connected along the wire rail by the slider.

[0009] Preferably, the lathe spindle includes a front bearing housing and a tailstock. A rotating shaft is rotatably connected to the front bearing housing via a bearing. One end of the rotating shaft is connected to a servo motor, and the other end of the rotating shaft is fixedly connected to a three-jaw chuck. A center is connected to the tailstock via a pressure rod, and a lead screw is rotatably connected to the three-jaw chuck and the center.

[0010] Preferably, the servo motor is connected to the shaft via a belt and pulley.

[0011] Preferably, the frame is a cast iron platform with a surface finish of <0.02mm.

[0012] The beneficial effects of this utility model are: This utility model designs a lead screw testing platform with a simple structure, and the lead screw and lead screw nut are easy to install and disassemble. At the same time, the lead screw is connected by a three-jaw chuck and a pin, which is suitable for lead screws of various sizes. Similarly, the movable block is adjustable through the oval hole, which is suitable for lead screw nuts of various sizes. It has a wide range of applications, saves processing costs, and improves processing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the transmission system of the test platform in this utility model;

[0015] Figure 3 This is a schematic diagram of a structure of the adjustable lead screw nut fixing seat in this utility model;

[0016] In the diagram: 1. Frame, 2. Test platform transmission system, 3. Lathe spindle, 4. Servo motor, 5. Belt, 6. Adjustable lead screw nut fixing seat, 7. Linear guide, 8. Lead screw nut, 9. Nut fixing block, 10. Movable block, 11. Linear guide fixing base. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0018] Example: Figures 1-3 As shown, a lead screw testing platform includes a frame 1 and a testing platform transmission system 2 fixedly mounted on the frame. The testing platform transmission system includes a lathe spindle 3, a servo motor 4, an adjustable lead screw nut fixing seat 6, and a linear guide 7. The lathe spindle is used to mount the lead screw, which is driven by the servo motor to rotate. The linear guide is fixedly mounted on the frame. The adjustable lead screw nut fixing seat includes a linear gauge fixing base 11, a movable block 10, and a nut fixing block 9. The linear gauge fixing base is slidably connected along the linear guide. The linear gauge fixing base has an oblong hole. Two movable blocks that are adjusted and installed along the oblong hole are installed on the oblong hole by bolts. A nut fixing block is fixedly installed on the movable block. The nut fixing block is used to fix the lead screw nut 8.

[0019] The nut fixing block is fixed to the screw nut by bolts.

[0020] The bottom of the wire gauge fixing base is fixed with a slider by bolts, and the wire gauge fixing base is slidably connected along the wire rail by the slider.

[0021] The lathe spindle includes a front bearing housing and a tailstock. A rotating shaft is rotatably connected to the front bearing housing via a bearing. One end of the rotating shaft is connected to a servo motor, and the other end of the rotating shaft is fixedly connected to a three-jaw chuck. A center is connected to the tailstock via a pressure rod, and a lead screw is rotatably connected to the three-jaw chuck and the center.

[0022] The servo motor is connected to the rotating shaft via belt 5 and pulley. The frame is a cast iron platform with a surface finish of <0.02mm.

[0023] When using this invention, the lead screw is mounted on a platform, and the surface runout accuracy is <0.02mm.

[0024] 1. Set the feed position distance of the servo motor and use a dial indicator to measure the repeatability of its lead screw positioning.

[0025] 2. Repeatedly advance and retreat to observe the forward and backward load values ​​and whether there are any abnormal noises or stutters.

[0026] 3. A hand-operated kilogram scale is used to measure the load force of the lead screw nut during the operation of the lead screw.

[0027] This utility model has a simple structure, and the lead screw and lead screw nut are easy to install and disassemble. At the same time, the lead screw is connected by a three-jaw chuck and a center pin, which is suitable for lead screws of various sizes. Similarly, the movable block is adjustable through the oval hole, which is suitable for lead screw nuts of various sizes. It has a wide range of applications, saves processing costs, and improves processing efficiency.

[0028] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A spindle test platform comprising a frame and a test platform drive system fixedly mounted on the frame, characterized in that, The test platform transmission system comprises a lathe spindle, a servo motor, an adjustable screw nut fixing seat and a linear rail.

2. The test platform of claim 1, wherein, The screw nut fixing block is fixedly installed on the movable block through a bolt.

3. The test platform of claim 1, wherein, The linear gauge fixing base is slidably connected to the linear rail through a sliding block.

4. The test platform of claim 1, wherein, The lathe spindle comprises a front bearing seat and a tail seat.

5. The test platform of claim 4, wherein, The servo motor is connected to the rotating shaft through a belt and a belt pulley.

6. The test platform of claim 1 wherein, The surface precision of the cast iron platform is less than 0.02 mm.

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