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Ball screw preload adjustment method for electric cylinder

A technology of ball screw and adjustment method, which is applied in the direction of transmission device, belt/chain/gear, manufacturing tools, etc. It can solve the problems of unstable rotation, large length, and screw shaking, etc., and achieve good adjustment of preload, replacement and Evaluate the effect of simplicity

Active Publication Date: 2019-06-07
中村精机(无锡)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the ball screw is used in the electric cylinder, because the nut rotates and displaces under the action of the thread, because the screw is only fixedly supported on one side close to the motor, and the other side is suspended, when the nut slides to close to the motor When it is in the lower position, due to the long stroke and the relatively large length of suspension, the end of the screw away from the motor will shake, the rotation will be unstable, noise will be generated, and even the screw will hit the cylinder.

Method used

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  • Ball screw preload adjustment method for electric cylinder
  • Ball screw preload adjustment method for electric cylinder
  • Ball screw preload adjustment method for electric cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: a kind of mounting frame, such as figure 1 and figure 2 As shown, it includes a cylindrical installation base 1, the bottom of the installation base 1 is provided with a flange 12, the flange 12 is cylindrical, the diameter of the installation base 1 is larger than the diameter of the flange 12, and the top of the installation base 1 is provided with a mounting The hole 11, the mounting hole 11 is sunken downwards and arranged in a cylindrical shape, and its inner diameter is the same as that of the inner nut 3 of the ball screw.

[0043] see figure 2 and image 3, there is an auxiliary hole 13 in the middle of the installation base 1, the auxiliary hole 13 is set through the installation base 1, and the auxiliary shaft 2 is arranged in the auxiliary hole 13, the diameter of the auxiliary shaft 2 is the same as the diameter of the auxiliary hole 13 and the middle wire of the ball screw The diameters of the rods 4 are all the same, and the auxiliary sh...

Embodiment 2

[0045] Embodiment 2: A method for adjusting the preload of a ball screw for an electric cylinder, which includes the following steps:

[0046] S1: Material selection, prepare balls of several diameters according to the ball screw model, and a mounting bracket suitable for the nut on the ball screw. The diameter of the ball is between 2.778mm and 3.115mm;

[0047] S2: To install the ball, remove the nut on the ball screw, set it in the installation frame, select a certain diameter of the ball, use the installation wrench to insert several balls into the thread of the nut in sequence, so that several balls are arranged in sequence And covered the whole thread;

[0048] S3: Preparation for trial operation, set the nut full of balls in the thread and install it back on the threaded screw, and then install the ball screw into the electric cylinder for trial operation;

[0049] S4: Check before the test run, check the tightness of each bolt and nut and mark it, check the parallelis...

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Abstract

The invention discloses a prepressing adjustment method of a ball screw for an electric cylinder, and the prepressing adjustment method has the advantages that the screw can rotate steadily, noise is reduced and cylinder collision is avoided. The technical scheme has the key point that the prepressing adjustment method comprises the processes of material selection, ball mounting, trial operation preparation, trial operation pre-examination, trial operation, numerical recording, adjustment completion and the like. The prepressing adjustment method can conveniently perform adaptation on the models of balls in ball screws of various models, so that the pressure, appropriate for nuts and screws, of the the balls can be determined, the screw can be kept steady as much as possible in the rotating process, shaking of the screw in the rotating process is reduced, noise generated during operation is reduced, and the situation of cylinder collision is also reduced.

Description

technical field [0001] The invention relates to the field of adjusting methods for electric cylinder parts, in particular to a method for adjusting the preload of a ball screw used in an electric cylinder. Background technique [0002] The electric cylinder is a modular product that integrates the servo motor and the lead screw. It converts the rotary motion of the servo motor into linear motion, and at the same time converts the best advantages of the servo motor: precise speed control, precise revolution control, and precise torque control into Precise speed control, precise position control, precise thrust control. [0003] Ball screws are generally used in electric cylinders. Ball screws are the most commonly used transmission components in tool machinery and precision machinery. Their main function is to convert rotational motion into linear motion, or convert torque into axial repeated force , at the same time, it has the characteristics of high precision, reversibili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H25/22F16H57/028B25B27/14
CPCB25B27/14F16H25/2209F16H57/028F16H2057/0056F16H2057/0062
Inventor 郑丰
Owner 中村精机(无锡)有限公司