CN220982198U - Screw rod detection device - Google Patents

Abstract

The utility model relates to a screw rod detection device which comprises a bottom plate and a top plate, wherein a screw rod support frame to be detected and a first motor for driving the screw rod to be detected to rotate are arranged on the bottom plate, a detection mechanism and a driving mechanism are arranged on the top plate in a sliding mode, the detection mechanism comprises a first movable part and a second movable part, the first movable part is connected with the second movable part in a sliding mode, the first movable part is driven by the driving mechanism, the second movable part is sleeved on the screw rod to be detected and driven by the screw rod, and a grating ruler for detecting displacement difference of the first movable part and the second movable part is arranged between the first movable part and the second movable part. The utility model has the advantages that: the standard screw rod and the screw rod to be detected are utilized to drive the first sliding block and the second sliding block to slide in the same direction respectively, the displacement difference of the first sliding block and the second sliding block is detected in real time through the grating ruler, the precision of the screw rod to be detected is detected by utilizing the displacement difference, manual operation and reading are not needed, and the detection precision is high.

Description

A screw rod detection device

Technical Field

The utility model relates to the field of screw rod production and processing, in particular to a screw rod detection device.

Background technique

The screw is a commonly used component in mechanical transmission, and its accuracy is directly related to the accuracy of mechanical equipment. Therefore, the measurement of screw accuracy is particularly important. Direct measurement is one of the commonly used screw accuracy measurement methods, but this measurement method requires workers to operate and read during the measurement process, and once the measuring tool is not zeroed or there is an error, it is very easy to affect the measurement result.

Summary of the invention

The utility model mainly solves the above problems and provides a screw rod detection device which does not require manual participation in the measurement process and has high detection accuracy.

The technical solution adopted by the utility model to solve its technical problems is a screw rod detection device, including a bottom plate and a top plate, the bottom plate is provided with a screw rod support frame to be measured and a first motor to drive the screw rod to be measured to rotate, the top plate is slidably provided with a detection mechanism and a driving mechanism, the detection mechanism includes a first movable part and a second movable part, the first movable part is slidably connected with the second movable part, the first movable part is driven by the driving mechanism, the second movable part is sleeved on the screw rod to be measured and driven by the screw rod, and a grating scale for detecting the displacement difference between the first movable part and the second movable part is provided between the first movable part and the second movable part.

As a preferred embodiment of the above scheme, the first movable part includes a first slider, which is slidably set on the top plate and driven by a driving mechanism, and connecting frames are vertically downwardly provided on both sides of the first slider, and a sliding rod is provided on the connecting frames, and the second movable part is slidably set on the sliding rod.

As a preferred embodiment of the above scheme, the second movable part includes a second slider, which is arranged on the screw rod to be tested and moves in the length direction of the screw rod when the screw rod to be tested rotates. A through hole is provided at the upper end of the second slider corresponding to the position of the slide rod, and the second slider is slidably arranged on the slide rod through the through hole.

As a preferred embodiment of the above scheme, the scale grating of the grating ruler is fixedly arranged on the lower end surface of the first slider, and the grating reading head of the grating ruler is fixedly arranged on the upper end surface of the second slider.

As a preferred embodiment of the above scheme, the driving mechanism includes a second motor and a standard screw rod, the standard screw rod is inserted into the first slider, and the rotation speed of the second motor is equal to the rotation speed of the first motor.

The utility model has the advantages that the first slider and the second slider are driven to slide in the same direction respectively by the standard screw rod and the screw rod to be measured, the displacement difference between the first slider and the second slider is detected in real time by the grating ruler, and the accuracy of the screw rod to be measured is detected by using the displacement difference, without manual operation and reading, the detection accuracy is high, and it is not easily affected by the accuracy of the measuring tool.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a screw rod detection device in an embodiment.

FIG. 2 is a schematic side view of the structure of the detection mechanism in the embodiment.

1- bottom plate 2- top plate 3- support frame of the screw to be tested 4- first motor 5- screw to be tested 6- standard screw 7- second motor 8- first slider 9- connecting frame 10- slider 11- scale grating 12- grating reading head 13- second slider.

Detailed ways

The technical solution of the utility model is further described below through embodiments and in conjunction with the accompanying drawings.

Example:

The present embodiment provides a screw rod detection device, as shown in Figure 1, comprising a bottom plate 1 and a top plate 2, wherein a screw rod support frame 3 to be tested and a first motor 4 for driving the screw rod to be tested to rotate are provided on the bottom plate 1, and a detection mechanism and a driving mechanism are slidably provided on the top plate 2, wherein the detection mechanism comprises a first movable part and a second movable part, wherein the first movable part is slidably connected to the second movable part, the first movable part is driven by the driving mechanism, the second movable part is sleeved on the screw rod 5 to be tested and driven by the screw rod, and a grating ruler for detecting the displacement difference between the first movable part and the second movable part is provided between the first movable part and the second movable part.

As shown in Figure 2, the first movable part includes a first slider 8, which is slidably arranged on the top plate 1 and driven by a driving mechanism. A connecting frame 9 is vertically downwardly arranged on both sides of the first slider 8, and a slide bar 10 is arranged on the connecting frame. The second movable part is slidably arranged on the slide bar 10, and the connecting frame and the slide rail are detachably connected. The second movable part includes a second slider 13, and the second slider 13 is arranged on the screw rod to be measured and moves in the length direction of the screw rod when the screw rod to be measured rotates. A through hole is arranged at the upper end of the second slider 13 corresponding to the position of the slide bar, and the second slider is slidably arranged on the slide bar 10 through the through hole. In this embodiment, the driving mechanism includes a second motor 7 and a standard screw rod 6, and the standard screw rod 6 is a qualified product of the screw rod to be measured, and the standard screw rod 6 is inserted into the first slider 8. The scale grating 11 of the grating ruler is fixedly arranged on the lower end surface of the first slider, and the grating reading head 12 of the grating ruler is fixedly arranged on the upper end surface of the second slider.

When the screw rod detection device in this embodiment performs screw rod detection, the screw rod to be tested is first set on the screw rod support frame and connected to the first motor shaft. Then, the connecting frame and the slide bar are disassembled to separate the first slider and the second slider, and the second slider is set on the screw rod to be tested. The standard screw rod is connected to the second motor shaft and the first slider is set on the standard screw rod. Then, the connecting frame and the slide bar are assembled, the first slider and the second slider are slidably connected, and the scale grating is embedded in the grating reading head, and the initial reading is recorded. Finally, the first motor and the second motor are operated at the same time. When the first motor and the second motor are operated, the rotation speed is equal, and the first slider and the second slider need to move in the same direction. After running for a period of time, the grating ruler reading is obtained. If the reading does not change, it means that the screw rod to be tested is a qualified screw rod. If the reading changes, it means that there is a problem with the screw rod to be tested.

The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims (5)

1. A screw detection device, characterized in that: it includes a bottom plate and a top plate, the bottom plate is provided with a screw support frame to be tested and a first motor to drive the screw to be tested to rotate, the top plate is slidably provided with a detection mechanism and a driving mechanism, the detection mechanism includes a first movable part and a second movable part, the first movable part is slidably connected to the second movable part, the first movable part is driven by the driving mechanism, the second movable part is sleeved on the screw to be tested and driven by the screw, and a grating ruler is provided between the first movable part and the second movable part to detect the displacement difference between the first movable part and the second movable part. 2. The screw rod detection device according to claim 1 is characterized in that: the first movable part includes a first slider, the first slider is slidably set on the top plate and driven by a driving mechanism, connecting frames are vertically downwardly provided on both sides of the first slider, a sliding rod is provided on the connecting frame, and the second movable part is slidably set on the sliding rod. 3. The screw rod detection device according to claim 2 is characterized in that: the second movable part includes a second slider, the second slider is arranged on the screw rod to be tested and moves in the length direction of the screw rod when the screw rod to be tested rotates, a through hole is provided at the upper end of the second slider corresponding to the position of the slide rod, and the second slider is slidably set on the slide rod through the through hole. 4. The screw rod detection device according to claim 3 is characterized in that: the scale grating of the grating ruler is fixedly set on the lower end surface of the first slider, and the grating reading head of the grating ruler is fixedly set on the upper end surface of the second slider. 5. The screw rod detection device according to claim 2 is characterized in that: the driving mechanism includes a second motor and a standard screw rod, the standard screw rod is inserted into the first slider, and the rotation speed of the second motor is equal to the rotation speed of the first motor.