Lead screw load and transmission efficiency detection device

Abstract

The utility model relates to a lead screw load and transmission efficiency detection device, which comprises a testboard, a lead screw clamping mechanism, a nut clamping mechanism and a load mechanism, and is characterized in that the lead screw clamping mechanism comprises a driving clamping part and a driven clamping part which are oppositely arranged at two ends of the testboard; the nut clamping mechanism is arranged on the test bench in a sliding mode and located between the driving clamping part and the driven clamping part, a through groove is formed in the position, corresponding to a sliding area of the nut clamping mechanism, of the test bench, the nut clamping mechanism is provided with a load force application part, and the load force application part extends into the through groove. The load mechanism is arranged on the lower end face of the test bench and abuts against the load force application part. The utility model has the advantages that the driving clamping part and the driven clamping part are arranged, so that double-end clamping can be carried out on the lead screw, the lead screw is ensured to be horizontal, and the detection precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw performance detection equipment technical field especially, relates to a screw load and transmission efficiency detection device. BACKGROUND

[0002] Screw is the ideal product of converting rotary motion into linear motion or converting linear motion into rotary motion. Screw transmission efficiency and screw load capacity are one of the important indexes for evaluating screw performance. The existing screw load and transmission efficiency detection device is usually single-end clamped. For longer screw, it cannot be ensured that it is in horizontal or vertical state during the testing process, which may cause errors in the detection results. SUMMARY

[0003] The utility model mainly solves above -mentioned problem, provides a screw load and transmission efficiency detection device, through to the screw is double -end clamping, ensure that the screw is in horizontal state, and further improve the detection precision.

[0004] The utility model discloses a screw load and transmission efficiency detection device, including test table, screw clamping mechanism, nut clamping mechanism and load mechanism, the screw clamping mechanism includes driving clamping part and driven clamping part, the driving clamping part and driven clamping part are oppositely arranged at both ends of test table, the nut clamping mechanism is slidably arranged on test table and is located between driving clamping part and driven clamping part, the through slot is equipped at the sliding area of nut clamping mechanism on test table, the load force part is equipped on the nut clamping mechanism, the load force part extends into the through slot, the load mechanism is arranged at the lower end surface of test table and is in abutment with load force part.

[0005] As a preferred scheme of the above scheme, the driving clamping part includes a motor, a reducer, a torsion sensor and a first clamping chuck connected in sequence.

[0006] As a preferred scheme of the above scheme, the driven clamping part includes a first sliding rail, a first seat body, a first mounting plate and a second clamping chuck, the first seat body is slidably arranged on the first sliding rail, the first mounting plate is vertically arranged on the first seat body, the second clamping chuck is fixedly arranged on the first mounting plate, and the first mounting plate is provided with a first through hole coaxial with the second clamping chuck.

[0007] As a preferred scheme of the above scheme, the nut clamping mechanism includes a second sliding rail, a second seat body, a second mounting plate and a nut clamping chuck, the second sliding rail is arranged on both sides of the through slot, the second seat body is slidably arranged on the second sliding rail, the second mounting plate is vertically arranged on the second seat body, the nut clamping chuck is fixedly arranged on the second mounting plate, and the second mounting plate is provided with a second through hole coaxial with the nut clamping chuck.

[0008] As a preferred solution of the above-mentioned solution, the load force applying part is arranged at the lower end surface of the second seat body.

[0009] As a preferred solution of the above-mentioned solution, the load mechanism comprises a power cylinder and a pressure sensor, and the pressure sensor is arranged at the end of the piston rod of the power cylinder.

[0010] The utility model discloses the advantages are: be equipped with driving clamping part and driven clamping part, can carry out double -end clamping to lead screw, ensure lead screw level, improve detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the three-dimensional structure schematic diagram of the lead screw load and transmission efficiency detection device.

[0012] Figure 2 It is the side view structure schematic diagram of the lead screw load and transmission efficiency detection device.

[0013] 1-test bench 2-motor 3-reducer 4-torque sensor 5-first clamping chuck 6-first slide rail 7-first seat body 8-first mounting plate 9-second addition chuck 10-second slide rail 11-second seat body 12-second mounting plate 13-nut clamping chuck 14-power cylinder 15-pressure sensor 16-load force applying part. DETAILED DESCRIPTION

[0014] The technical solutions of the utility model will be further explained below by examples and in combination with the drawings.

[0015] Embodiment:

[0016] The utility model discloses a kind of lead screw load and transmission efficiency detection devices, as shown in Figure 1 And Figure 2 It shows, including test bench 1, lead screw clamping mechanism, nut clamping mechanism and load mechanism.

[0017] The screw clamping mechanism includes a driving clamping part and a driven clamping part, which are oppositely arranged at the left and right ends of the test table 1. The driving clamping part includes a motor 2, a speed reducer 3, a torque sensor 4 and a first clamping chuck 5 connected in sequence. The driven clamping part includes a first sliding rail 6, a first seat body 7, a first mounting plate 8 and a second clamping chuck 9. The first seat body 7 is slidingly arranged on the first sliding rail 6. The first mounting plate 8 is vertically arranged on the first seat body 7. The second clamping chuck 9 is fixedly arranged on the first mounting plate 8. The first mounting plate 8 is provided with a first through hole coaxial with the second clamping chuck 9. The first clamping chuck and the second clamping chuck are used for clamping the two ends of the screw rod, so that the screw rod remains in a horizontal state. When the screw rod is clamped, one end of the screw rod is clamped by the first clamping chuck, and the second end of the screw rod is clamped by the second clamping chuck. When the screw rod is too long, the second end of the screw rod can be arranged to pass through the first through hole so that the second clamping chuck clamps the middle part of the screw rod. The first sliding rail enables the second clamping chuck to slide left and right, thereby adapting to screw rods of different lengths.

[0018] The nut clamping mechanism is slidingly arranged on the test table 1 and located between the driving clamping part and the driven clamping part. The test table is provided with a through slot corresponding to the sliding area of the nut clamping mechanism. The nut clamping mechanism is provided with a load applying part, which extends into the through slot. The load mechanism is arranged on the lower end surface of the test table and abuts against the load applying part. The nut clamping mechanism includes a second sliding rail 10, a second seat body 11, a second mounting plate 12 and a nut clamping chuck 13. The second sliding rail 10 is arranged on both sides of the through slot. The second seat body 11 is slidingly arranged on the second sliding rail 10. The second mounting plate 12 is vertically arranged on the second seat body 11. The nut clamping chuck 13 is fixedly arranged on the second mounting plate 12. The second mounting plate 12 is provided with a second through hole coaxial with the nut clamping chuck. The load applying part is arranged on the lower end surface of the second seat body.

[0019] The load mechanism includes a power cylinder 14 and a pressure sensor 15. The pressure sensor 15 is arranged on the piston rod end of the power cylinder.

[0020] In the embodiment, when the screw load and transmission efficiency detection device detects the screw load, the first clamping chuck, the second clamping chuck and the nut clamping chuck clamp the two ends of the screw and the screw nut respectively, and the first clamping chuck, the second clamping chuck and the nut clamping chuck are locked to prevent the screw or the screw nut from rotating during the detection process. Then, the power cylinder pushes the nut clamping mechanism through the load force applying part, and the load capacity of the screw is detected by the pressure sensor of the power cylinder. When the transmission efficiency of the screw is detected, the first clamping chuck, the second clamping chuck and the nut clamping chuck clamp the two ends of the screw and the screw nut respectively, but the first clamping chuck and the second clamping chuck are not locked, only the nut clamping chuck is locked, or the first clamping chuck and the second clamping chuck are locked and the nut clamping chuck is unlocked. Then, the power cylinder pushes the nut clamping mechanism along the screw through the load force applying part, and the pressure sensing force and the torque sensor data are obtained during the translation process, and the transmission efficiency of the screw is calculated according to the formula.

[0021] The specific embodiments described herein are merely illustrative of the principles of this application. Numerous modifications or adaptations will be readily apparent to those skilled in the art of this application without departing from the spirit or scope of the application as defined by the following claims.

Claims

1. A device for detecting the load and transmission efficiency of a lead screw, characterized in that: The test bench, the screw clamping mechanism, the nut clamping mechanism and the load mechanism, the screw clamping mechanism comprises a driving clamping part and a driven clamping part, the driving clamping part and the driven clamping part are oppositely arranged at both ends of the test bench, the nut clamping mechanism is slidably arranged on the test bench and located between the driving clamping part and the driven clamping part, a through slot is arranged on the test bench corresponding to the sliding area of the nut clamping mechanism, a load applying part is arranged on the nut clamping mechanism, the load applying part extends into the through slot, and the load mechanism is arranged on the lower end surface of the test bench and abuts against the load applying part.

2. The lead screw load and transmission efficiency detection device according to claim 1, characterized by: The driving clamping part comprises a motor, a speed reducer, a torque sensor and a first clamping chuck connected in sequence.

3. The lead screw load and transmission efficiency detection device according to claim 1, characterized by: The driven clamping part comprises a first sliding rail, a first seat body, a first mounting plate and a second clamping chuck, the first seat body is slidably arranged on the first sliding rail, the first mounting plate is vertically arranged on the first seat body, the second clamping chuck is arranged on the first mounting plate, and the first mounting plate is provided with a first through hole coaxial with the second clamping chuck.

4. The lead screw load and transmission efficiency detection device according to claim 1, characterized by: The nut clamping mechanism comprises a second sliding rail, a second seat body, a second mounting plate and a nut clamping chuck, the second sliding rail is arranged on both sides of the through slot, the second seat body is slidably arranged on the second sliding rail, the second mounting plate is vertically arranged on the second seat body, the nut clamping chuck is arranged on the second mounting plate, and the second mounting plate is provided with a second through hole coaxial with the nut clamping chuck.

5. The lead screw load and transmission efficiency detection device according to claim 4, characterized by: The load applying part is arranged on the lower end surface of the second seat body.

6. The lead screw load and transmission efficiency detection device according to claim 1, characterized by: The load mechanism comprises a power cylinder and a pressure sensor, and the pressure sensor is arranged on the end of the piston rod of the power cylinder.

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