Clearance detection device

Abstract

The utility model relates to a clearance detection device, which comprises a base, a nut and a screw rod, the base is provided with a first fixed seat and a detection part, the screw rod is movably matched with the nut, and the screw rod and the nut are both connected with the first fixed seat. The clearance detection device further comprises a tensioning assembly, a first moving assembly, a second moving assembly and a third moving assembly, the tensioning assembly is matched with the lead screw, the first moving assembly is matched with the nut, and the second moving assembly and the third moving assembly are matched with the tensioning assembly and the detection part respectively. The nut is fixed through the first moving assembly, the lead screw is fixed through the tensioning assembly through the second moving assembly, the relative movement of the lead screw and the nut is achieved through the third moving assembly, the detection part is assisted to automatically detect the clearance, manual detection is not needed any more, convenience and rapidness are achieved, and the production efficiency is improved. And the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing and detection, in particular to a clearance detection device. Background Art

[0002] Clearance refers to the maximum movement of one ferrule along the radial or axial direction when the other ferrule is fixed among the mutually sleeved objects. It has an important impact on the performance and service life of the objects. The clearance size directly affects the rolling fatigue life, temperature rise, noise, vibration and other performances of the objects. A reasonable clearance setting can ensure the stable operation of the objects during the working process and reduce the occurrence of faults.

[0003] The traditional clearance detection method is manual measurement, that is, using tools such as vernier calipers and feeler gauges for manual measurement, with low accuracy and low efficiency; or the feeling method is adopted, that is, feeling the clearance size by finger touch or shaking. This method can only make qualitative judgments and cannot be quantified.

[0004] Especially for the clearance detection of traditional lead screws and nuts, it is necessary to first assemble the nut and the lead screw, and manually measure the workbench connected to the nut by using a dial indicator, and rotate the lead screw forward and backward to detect the maximum clearance between the lead screw and the nut. However, there are problems in the operation process: the dial indicator is easily affected by external vibration, temperature and other factors, and the accuracy of the detection results is crossed; it requires the detector to have certain skills and experience to ensure the accuracy and reliability of the measurement, which is time-consuming and laborious, and increases the cost of manual detection. Summary of the Utility Model

[0005] Aiming at the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a clearance detection device to solve one or more problems in the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A clearance detection device includes a base, a nut and a lead screw. A first fixed seat and a detection part are arranged on the base. The lead screw is movably fitted to the nut and is connected to the first fixed seat. The clearance detection device further includes a tensioning component, a first moving component, a second moving component and a third moving component. The tensioning component is fitted to the lead screw, the first moving component is fitted to the nut, and the second moving component and the third moving component respectively cooperate with the tensioning component and the detection part.

[0008] Furthermore, the first moving component is arranged on the surface of the base. The first moving component includes a first cylinder and a push plate. The push plate is connected to the first cylinder and the push plate is fitted to the nut.

[0009] Further, the second moving component includes a slide rail, a slider, and a connecting plate. The slide rail is disposed on the base, the slider is slidably engaged with the slide rail, and the connecting plate is connected to the slider.

[0010] Further, the second moving component further includes a second cylinder, a third cylinder, and a pushing member. The pushing member is connected to the connecting plate and is respectively engaged with the second cylinder and the third cylinder.

[0011] Further, the tensioning component includes a second fixed seat and a fixing sleeve. The second fixed seat is disposed on the surface of the connecting plate, and the fixing sleeve is fixedly connected to the second fixed seat.

[0012] Further, the tensioning component further includes a tensioning member and a fourth cylinder. The tensioning member is movably engaged with the fixing sleeve, and the fourth cylinder is disposed on the surface of the connecting plate and is connected to the tensioning member.

[0013] Further, the third moving component includes a fifth cylinder and a sixth cylinder. The fifth cylinder is connected to the connecting plate, and the sixth cylinder is disposed on the base and is engaged with the fifth cylinder.

[0014] Further, the first fixed seat is provided with a clamping position and a recess. The clamping position and the recess are connected and the intersection forms a first surface. The lead nut is movably disposed within the clamping position, and a portion of the lead screw is disposed within the recess.

[0015] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0016] The present utility model is provided with the first moving component, the second moving component, and the third moving component. The fixation of the lead nut is achieved through the first moving component, the fixation of the lead screw by the tensioning component is achieved through the second moving component, and then the relative movement between the lead screw and the lead nut is achieved through the third moving component. Supplementary detection by the detection unit automatically detects the backlash, eliminating the need for manual detection, which is convenient and fast, and improves the detection efficiency. Description of the Drawings

[0017] Figure 1 Shows the structural schematic diagram of a backlash detection device according to an embodiment of the present utility model Figure I .

[0018] Figure 2 Shows the structural schematic diagram of a backlash detection device according to an embodiment of the present utility model Figure II .

[0019] Figure 3 Shows the structural schematic diagram of the first fixed seat of a backlash detection device according to an embodiment of the present utility model.

[0020] Figure 4 The figure shows a partially enlarged schematic view of the tensioning assembly of a clearance detection device according to an embodiment of the present utility model.

[0021] Reference numerals in the drawings: 1, base; 2, first fixed seat; 201, clamping position; 202, recess; 203, first surface; 3, tensioning assembly; 301, second fixed seat; 302, fixing sleeve; 303, tensioning member; 304, fourth cylinder; 4, nut; 5, lead screw; 6, detection part; 7, first moving assembly; 701, first cylinder; 702, push plate; 8, second moving assembly; 801, slide rail; 802, slider; 803, connecting plate; 804, second cylinder; 805, third cylinder; 806, pushing member; 9, third moving assembly; 901, fifth cylinder; 902, sixth cylinder. Detailed implementation manners

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates on a clearance detection device proposed by the present utility model in combination with the accompanying drawings and specific implementation manners. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings in this specification are in a very simplified form and all use non-precise scales. The orientation or positional relationships indicated by terms such as "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. are based on the orientation or positional relationships shown in the drawings, rather than indicating or implying that a clearance detection device or component must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model, and is only used to conveniently and clearly assist in explaining the purpose of the implementation manner of the present utility model. In order to make the purpose, features and advantages of the present utility model more obvious and understandable, please refer to the accompanying drawings.

[0023] It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model.

[0024] The following describes the specific structure of a clearance detection device:

[0025] Please refer to Figures 1 to 3 for Figure 1The left end shown is the proximal end for elaboration. The clearance detection device of this embodiment includes a base 1, a nut 4, and a lead screw 5. A first fixed seat 2 is provided at the proximal end of the base 1. The first fixed seat 2 is provided with a clamping position 201 and a recess 202. The clamping position 201 and the recess 202 are connected and a first surface 203 is formed at the junction. The nut 4 is movably arranged in the clamping position 201, and the lead screw 5 is movably fitted with the nut 4 and a part of it is arranged in the recess 202.

[0026] Furthermore, the clearance detection device further includes a first moving component 7. The first moving component 7 is arranged on the front surface of the base 1. The first moving component 7 includes a first cylinder 701 and a push plate 702. The push plate 702 is connected to the first cylinder 701. The push plate 702 cooperates with the nut 4 under the action of the first cylinder 701 to push the nut 4 to the first surface 203, so that the nut 4 is fixed in the clamping position 201. Preferably, in this embodiment, two first moving components 7 are provided to push the nut 4 to improve the operation stability.

[0027] Furthermore, the clearance detection device further includes a second moving component 8. The second moving component 8 includes a slide rail 801, a slider 802, and a connecting plate 803. Preferably, in this embodiment, two slide rails 801 are arranged on the base 1. Each slide rail 801 is provided with two sliders 802. The sliders 802 are slidably fitted with the slide rail 801. The connecting plate 803 is connected to the sliders 802 and is arranged above the sliders 802. The second moving component 8 further includes a second cylinder 804, a third cylinder 805, and a pushing member 806. The pushing member 806 is connected to the connecting plate 803. The pushing member 806 also cooperates with the second cylinder 804 and the third cylinder 805 respectively. The second cylinder 804 and the third cylinder 805 can both act on the pushing member 806 to push the connecting plate 803 to move along the slide rail 801.

[0028] Furthermore, the clearance detection device further includes a third moving component 9. The third moving component 9 includes a fifth cylinder 901 and a sixth cylinder 902. The fifth cylinder 901 is connected to the connecting plate 803 and is arranged at the distal end of the base 1. The sixth cylinder 902 is arranged at the proximal end of the base 1 and cooperates with the fifth cylinder 901 to realize the movement of the connecting plate 803.

[0029] Further, the backlash detection device further includes a tensioning assembly 3, which includes a second fixed seat 301 and a fixing sleeve 302. The second fixed seat 301 is disposed on the proximal surface of the connecting plate 803, and the fixing sleeve 302 is fixedly connected to the second fixed seat 301. The tensioning assembly 3 further includes a tensioning member 303 and a fourth cylinder 304. The fourth cylinder 304 is disposed on the distal surface of the connecting plate 803 and connected to the tensioning member 303. Under the action of the fourth cylinder 304, the tensioning member 303 is movably engaged with the fixing sleeve 302 to increase or decrease the inner diameter of the tensioning member 303, thereby fixing or releasing the lead screw 5.

[0030] Further, the tensioning assembly 3 is respectively engaged with the second moving assembly 8 and the third moving assembly 9 to realize the movement of the lead screw 5 relative to the nut 4.

[0031] Further, the backlash detection device further includes a detection unit 6. The detection unit 6 is disposed on the surface of the base 1 and is respectively engaged with the second moving assembly 8 and the third moving assembly 9. When the second moving assembly 8 and the third moving assembly 9 push the tensioning assembly 3 to realize the movement of the lead screw 5 relative to the nut 4, the detection unit 6 detects the movement process to obtain a backlash value.

[0032] The following describes the specific working process of a backlash detection device according to an embodiment of the present invention as follows:

[0033] First, operate the first cylinder 701 to drive the push plate 702 to push the end face of the nut 4, so that the nut 4 abuts against the first surface 203 to fix the nut 4. Then, operate the second cylinder 804 to push the pushing member 806, and then drive the tensioning assembly 3 on the connecting plate 803 to move towards the direction close to the lead screw 5, and stop when a part of the lead screw 5 is embedded in the tensioning member 303. Then, operate the fourth cylinder 304 to drive the tensioning member 303 to move away from the nut 4. Further, the inner diameter of the tensioning member 303 decreases under the action of the fixed sleeve 302 to fix the lead screw 5. Then, operate the fifth cylinder 901 to push the connecting plate 803 to move towards the direction close to the nut 4, and then drive the tensioning member 303 to move in the same direction. The lead screw 5 is displaced relative to the nut 4 under the action of the tensioning member 303. At this time, the detection part 6 detects and records the first value. Then, operate the sixth cylinder 902 to push the connecting plate 803 to move away from the nut 4. Further, the tensioning member 303 drives the lead screw 5 to move relative to the nut 4 again. At this time, the detection part 6 records the second value again. The difference between the two values recorded by the detection part 6 is the clearance value. Finally, the fourth cylinder 304 moves towards the direction close to the nut 4 to release the tensioning member 303 from the lead screw 5. The third cylinder 805 pushes the pushing member 806, and then drives the connecting plate 803 to move away from the nut 4 and return to the original position. The first cylinder 701 moves away from the nut 4 to release the fixation of the nut 4.

[0034] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0035] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A clearance detection device, comprising a base, a nut and a screw rod, wherein a first fixing seat and a detection portion are arranged on the base, and the screw rod is movably matched with the nut and both are connected to the first fixing seat, characterized in that: The clearance detection device also includes a tensioning assembly, a first moving assembly, a second moving assembly and a third moving assembly. The tensioning assembly cooperates with the screw rod, the first moving assembly cooperates with the nut, and the second moving assembly and the third moving assembly cooperate with the tensioning assembly and the detection part respectively.

2. A clearance detection device according to claim 1, characterized in that: The first moving assembly is arranged on the surface of the base, and the first moving assembly includes a first cylinder and a push plate, the push plate is connected to the first cylinder, and the push plate is matched with the nut.

3. A clearance detection device according to claim 1, characterized in that: The second moving assembly includes a slide rail, a slider and a connecting plate. The slide rail is arranged on the base. The slider is slidably matched with the slide rail. The connecting plate is connected to the slider.

4. A clearance detection device as claimed in claim 3, characterized in that: The second moving assembly further includes a second cylinder, a third cylinder and a pushing member, wherein the pushing member is connected to the connecting plate, and the pushing member is also matched with the second cylinder and the third cylinder respectively.

5. A clearance detection device as claimed in claim 3, characterized in that: The tensioning assembly comprises a second fixing seat and a fixing sleeve, wherein the second fixing seat is arranged on the surface of the connecting plate, and the fixing sleeve is fixedly connected to the second fixing seat.

6. A clearance detection device according to claim 5, characterized in that: The tensioning assembly further includes a tensioning member and a fourth cylinder. The tensioning member is movably matched with the fixing sleeve. The fourth cylinder is arranged on the surface of the connecting plate and connected to the tensioning member.

7. A clearance detection device as claimed in claim 3, characterized in that: The third moving assembly includes a fifth cylinder and a sixth cylinder. The fifth cylinder is connected to the connecting plate, and the sixth cylinder is disposed on the base and matched with the fifth cylinder.

8. A clearance detection device according to claim 1, characterized in that: The first fixing seat is provided with a clamping position and a recessed portion, the clamping position and the recessed portion are connected and a first surface is formed at the intersection, the nut is movably arranged in the clamping position, and a part of the screw rod is arranged in the recessed portion.

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