Worm gear and worm meshing center distance measuring device

Abstract

The utility model discloses a worm and gear meshing center distance measuring device, and relates to the measuring equipment field, the worm and gear meshing center distance measuring device comprises a base plate, a support plate and a slide block, the support plate is vertically arranged on one end of the base plate, the slide block slides on the base plate, the slide block is elastically connected with the support plate, and the support plate is arranged on the base plate. A worm wheel is rotatably connected to the sliding block, a worm is rotatably clamped on the supporting plate, a graduated scale measuring mechanism is arranged on the supporting plate, the measuring end of the graduated scale measuring mechanism is installed on the supporting plate, a scale block is arranged on the sliding block, the scale block points to the scale line of the graduated scale, a dial indicator measuring mechanism is installed on the sliding block, and a dial indicator attaching mechanism is installed on the dial indicator measuring mechanism. After the worm gear and the worm are attached, the attaching end of the dial indicator attaching mechanism is attached to the measuring head of the dial indicator, the infrared measuring mechanism and the sliding block are provided with an infrared transmitting device, and infrared rays emitted by the infrared transmitting device directly irradiate the receiving end of the active infrared distance measuring sensor.

Description

Technical Field

[0001] The utility model relates to the field of measuring equipment, in particular to a device for measuring the meshing center distance of a worm gear. Background Art

[0002] CN205843569U proposes a device for measuring the center distance of a worm gear meshing. After the worm gear is fitted, a dial indicator is placed against a fixed block on which the worm gear is mounted. The reading is taken after the worm gear rotates one circle. This device can conveniently and quickly measure whether the center distance of the worm gear meshing exceeds the tolerance range.

[0003] The above technical solution measures the center distance deviation in only one way, and can only obtain one set of data. It is impossible to compare the data, which is prone to errors. If data comparison is to be performed, multiple measurements are required, but the contact position of the dial indicator with the fixed block and the contact point with the worm gear may not be completely consistent each time, which is more prone to errors. This measurement method limits the comprehensiveness and accuracy of the measurement results. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a worm gear meshing center distance measuring device, which simultaneously detects the center distance deviation of the worm gear through the scale measuring mechanism, dial indicator measuring mechanism and infrared measuring mechanism in the multiple measuring components. When the worm gear rotates one circle, three sets of data are obtained through three methods, and the measurement results can be verified with each other, reducing the errors that may be caused by a single measurement method, thereby improving the accuracy and reliability of the overall measurement.

[0005] The utility model provides a device for measuring the center distance of a worm gear meshing, comprising a base plate, a support plate and a sliding block, wherein the support plate is vertically mounted on one end of the base plate, the sliding block slides on the base plate, the sliding block and the support plate are elastically connected, a worm gear is rotatably connected to the sliding block, a worm is rotatably clamped on the support plate, a scale measuring mechanism, a measuring end of which is mounted on the support plate, the measuring end of the scale measuring mechanism is a scale, a scale block is provided on the sliding block, the scale block points to the scale line of the scale, a dial indicator measuring mechanism, a measuring end of which is mounted on the support plate, the measuring end of the dial indicator measuring mechanism It is a dial indicator. A dial indicator fitting mechanism is installed on the sliding block. After the worm wheel and worm are fitted, the fitting end of the dial indicator fitting mechanism fits with the measuring head of the dial indicator. The infrared measuring mechanism has a measuring end installed on the base plate. The measuring end of the infrared measuring mechanism is an active infrared ranging sensor. The sliding block is provided with an infrared emitting device. The emitted infrared light directly shines on the receiving end of the active infrared ranging sensor. The scale measuring mechanism, the dial indicator measuring mechanism and the infrared measuring mechanism constitute a multiple measurement component. After the worm and worm wheel are fitted, they rotate one circle, and the multiple measurement component measures multiple sets of data.

[0006] Optionally, a clamping mechanism is provided on the support plate, and the clamping mechanism includes a second slide groove, which is opened on one side of the support plate close to the sliding block along the length direction, a slow motor, which is fixedly connected to one end of the second slide groove, and the output end of the slow motor is fixedly connected to a screw through the side wall of the support plate, and the screw is rotatably connected to the side wall of the second slide groove, and the movable plate is threadedly connected to the screw, and the slow motor drives the movable plate horizontally, and a rotating shaft is provided on the movable plate, and the other end of the second slide groove is fixedly connected to a clamping plate, and the clamping plate has the same structure as the movable plate, and the movable plate moves and rotates with the clamping plate to clamp the worm.

[0007] Optionally, a handle is rotatably connected to the side wall of the movable plate, and the connecting end of the handle passes through the side wall of the support plate and is fixedly connected to the rotating shaft.

[0008] Optionally, the scale measuring mechanism further includes a protrusion mounted on the side wall of the support plate, the protrusion being fixedly connected to the scale, and a third slide groove provided on the scale along the length direction, the scale block sliding in the third slide groove.

[0009] Optionally, the dial indicator fitting mechanism includes an opening, which is opened on the sliding block, and a cylinder is horizontally installed in the opening. The output end of the cylinder is fixedly connected to a fitting plate, and the fitting plate fits with the measuring head of the dial indicator after expansion and contraction.

[0010] Optionally, a roller is fixedly connected to the lower end of the sliding block, a first sliding groove is provided on the upper surface of the base plate along the length direction, and the roller is rollingly connected to the first sliding groove.

[0011] Optionally, the infrared measuring mechanism further includes an infrared lamp, which is an infrared emitting device of the infrared measuring mechanism and is installed at the lower end of the sliding block. The infrared light emitted by the infrared lamp directly irradiates the receiving end of the active infrared ranging sensor.

[0012] Optionally, a return spring is further included, and the sliding block and the support plate are elastically connected via the return spring.

[0013] Optionally, the upper end of the sliding block is fixedly connected to a column, and the worm gear is rotatably sleeved on the column.

[0014] Optionally, a bearing is provided at the portion where the worm wheel contacts the column.

[0015] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following advantages: the center distance deviation of the worm gear is detected simultaneously by the scale measuring mechanism, the dial indicator measuring mechanism and the infrared measuring mechanism in the multiple measuring components. When the worm gear rotates one circle, three sets of data are obtained by three methods, and the measurement results can be mutually verified, thereby reducing the errors that may be caused by a single measurement method, thereby improving the accuracy and reliability of the overall measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0017] In order to more clearly illustrate the implementation mode of the utility model or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a schematic structural diagram of a worm gear meshing center distance measuring device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of a worm gear meshing center distance measuring device of the utility model;

[0020] Figure 3 for Figure 1 The structural diagram of the scale measuring mechanism shown in ;

[0021] Figure 4 for Figure 1 Schematic diagram of the enlarged structure at a shown in FIG;

[0022] Figure 5 for Figure 1 Schematic diagram of the structure of the column shown in.

[0023] Description of Reference Numerals

[0024] 1. Base plate; 11. First slide; 2. Support plate; 21. Clamping mechanism; 211. Second slide; 212. Slow motor; 213. Movable plate; 214. Handle; 22. Bump; 3. Sliding block; 31. Column; 32. Roller; 33. Dial indicator fitting mechanism; 331. Cylinder; 332. Opening; 333. Fitting plate; 34. Scale block; 4. Worm gear; 5. Infrared lamp; 6. Active infrared ranging sensor; 7. Dial indicator; 8. Return spring; 9. Worm; 10. Scale; 101. Third slide. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0026] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the implementation methods in the specification are only part of the implementation methods of the present invention, not all of the implementation methods.

[0027] Combine Figures 1 to 5As shown, the worm gear meshing center distance measuring device provided by the embodiment of the present invention includes a base plate 1, a support plate 2 and a sliding block 3, the support plate 2 is vertically mounted on one end of the base plate 1, the sliding block 3 slides on the base plate 1, the sliding block 3 and the support plate 2 are elastically connected, a worm wheel 4 is rotatably connected to the sliding block 3, a worm 9 is rotatably clamped on the support plate 2, a scale measuring mechanism, a measuring end of which is mounted on the support plate 2, a measuring end of the scale measuring mechanism is a scale 10, a scale block 34 is provided on the sliding block 3, the scale block 34 points to the scale line of the scale 10, a dial indicator measuring mechanism, a measuring end of which is mounted on the support plate 2, a dial indicator measuring mechanism The measuring end of the structure is a dial indicator 7, and a dial indicator fitting mechanism 33 is installed on the sliding block 3. After the worm wheel 4 and the worm 9 are fitted, the fitting end of the dial indicator fitting mechanism 33 fits with the measuring head of the dial indicator 7. The infrared measuring mechanism has its measuring end installed on the base plate 1. The measuring end of the infrared measuring mechanism is an active infrared ranging sensor 6. An infrared emitting device is provided on the sliding block 3. The emitted infrared light directly shines on the receiving end of the active infrared ranging sensor 6. The scale measuring mechanism, the dial indicator measuring mechanism and the infrared measuring mechanism constitute a multiple measuring component. After the worm 9 is fitted with the worm wheel 4, it rotates one circle, and the multiple measuring component measures multiple sets of data.

[0028] Among them, the lower end of the sliding block 3 is fixedly connected with a roller 32, and the upper surface of the base plate 1 is provided with a first sliding groove 11 along the length direction. The roller 32 is rollingly connected to the first sliding groove 11, which can further reduce the friction generated when the sliding block 3 slides.

[0029] Therefore, the center distance deviation of the worm gear is simultaneously detected through the scale measuring mechanism, dial indicator measuring mechanism and infrared measuring mechanism in the multi-measuring component. When the worm gear rotates one circle, three sets of data are obtained through three methods. The measurement results can be verified with each other, reducing the errors that may be caused by a single measurement method, thereby improving the accuracy and reliability of the overall measurement.

[0030] In some embodiments, as Figure 2 As shown, a clamping mechanism 21 is provided on the support plate 2, and the clamping mechanism 21 includes a second slide groove 211, which is opened on the side of the support plate 2 close to the sliding block 3 along the length direction, and a slow motor 212, which is fixedly connected to one end of the second slide groove 211, and the output end of the slow motor 212 is fixedly connected to a screw through the side wall of the support plate 2, and the screw is rotatably connected to the side wall of the second slide groove 211, and the movable plate 213 is threadedly connected to the screw. The slow motor 212 drives the movable plate 213 horizontally, and a rotating shaft is provided on the movable plate 213. The other end of the second slide groove 211 is fixedly connected to a clamping plate, and the clamping plate has the same structure as the movable plate 213. After the movable plate 213 moves, it rotates with the clamping plate to clamp the worm 9.

[0031] The connection end of the handle 214 passes through the side wall of the support plate 2 and is fixedly connected to the rotating shaft, so that the staff can directly turn the handle to rotate the worm 9.

[0032] Therefore, the slow motor 212 is turned on to drive the movable plate 213 away from the fixed plate, and the worm gear 9 is placed between the movable plate 213 and the fixed plate. The slow motor 212 is turned on again to drive the movable plate 213 close to the fixed plate, so that the movable plate 213 and the rotating shaft on the fixed plate rotate and clamp the worm gear 9.

[0033] In some embodiments, as Figure 1 and Figure 3 As shown, the scale measuring mechanism also includes a protrusion 22, which is installed on the side wall of the support plate 2, and the protrusion 22 is fixedly connected to the scale 10, and a third slide groove 101 is opened on the scale 10 along the length direction, and the scale block 34 slides in the third slide groove 101.

[0034] Therefore, during the rotation of the worm 9 , the scale block 34 slides in the third sliding groove 101 , and the maximum and minimum values ​​on the scale line pointed by the scale block 34 are recorded, and the difference between them is calculated.

[0035] In some embodiments, as Figure 4 As shown, the dial indicator fitting mechanism 33 includes an opening 332, which is opened on the sliding block 3, and a cylinder 331 is horizontally installed in the opening 332. The output end of the cylinder 331 is fixedly connected to a fitting plate 333, and the fitting plate 333 fits with the measuring head of the dial indicator 7 after expansion and contraction.

[0036] Thus, the cylinder 331 is turned on to drive the bonding plate 333 to fit with the detection head of the dial indicator 7. During the rotation of the worm 9, the bonding plate 333 generates pressure on the detection head of the dial indicator 7 through displacement, causing the degree of the dial indicator 7 to change, and the maximum deflection value of the dial indicator 7 is recorded.

[0037] In some embodiments, as Figure 1 As shown, the infrared measuring mechanism also includes an infrared lamp 5, which is an infrared emitting device of the infrared measuring mechanism and is installed at the lower end of the sliding block 3. The infrared light emitted by the infrared lamp 5 directly irradiates the receiving end of the active infrared ranging sensor 6.

[0038] Therefore, when the worm 9 rotates, the infrared lamp 5 is turned on so that the infrared light directly irradiates the detection surface of the active infrared ranging sensor 6, and the active infrared ranging sensor 6 measures the distance moved by the light source when the worm 9 rotates.

[0039] The following is combined with Figure 1-5 Describe a specific embodiment of the utility model:

[0040] like Figure 1-Figure 5As shown, it includes a base plate 1, a support plate 2 and a sliding block 3. The support plate 2 is vertically mounted on one end of the base plate 1. The sliding block 3 slides on the base plate 1. The sliding block 3 and the support plate 2 are elastically connected. A worm gear 4 is rotatably connected to the sliding block 3. A worm 9 is rotatably clamped on the support plate 2. A scale measuring mechanism has a measuring end mounted on the support plate 2. The measuring end of the scale measuring mechanism is a scale 10. A scale block 34 is provided on the sliding block 3. The scale block 34 points to the scale line of the scale 10. A dial indicator measuring mechanism has a measuring end mounted on the support plate 2. The measuring end of the dial indicator measuring mechanism is a dial indicator 7. The sliding block 3 is provided with a scale block 34. The scale block 34 points to the scale line of the scale 10. A dial indicator measuring mechanism has a measuring end mounted on the support plate 2. The measuring end of the dial indicator measuring mechanism is a dial indicator 7. A dial indicator fitting mechanism 33 is installed on the moving block 3. After the worm wheel 4 and the worm 9 are fitted together, the fitting end of the dial indicator fitting mechanism 33 fits with the measuring head of the dial indicator 7. The infrared measuring mechanism has its measuring end installed on the base plate 1. The measuring end of the infrared measuring mechanism is an active infrared ranging sensor 6. An infrared emitting device is provided on the sliding block 3. The emitted infrared rays are directly irradiated on the receiving end of the active infrared ranging sensor 6. The scale measuring mechanism, the dial indicator measuring mechanism and the infrared measuring mechanism constitute a multiple measuring component. After the worm 9 is fitted with the worm wheel 4, it rotates one circle, and the multiple measuring component measures multiple sets of data.

[0041] During actual use, the slow motor 212 is turned on to drive the movable plate 213 away from the fixed plate, and the worm rod 9 is placed between the movable plate 213 and the fixed plate. The slow motor 212 is turned on to drive the movable plate 213 close to the fixed plate, so that the movable plate 213 and the rotating shaft on the fixed plate rotate and clamp the worm rod 9, and then the worm gear 4 is rotated and sleeved on the column 31. At this time, the return spring 8 drives the roller 32 on the sliding slide block 3 to slide in the first slide groove 11, thereby driving the worm gear 4 to fit with the worm 9, and at the same time, the cylinder 331 is turned on to drive the fitting plate 333 to fit with the detection head of the dial indicator 7. At this time, the staff holds the handle 214 to make the worm 9 rotate one circle. During the rotation, the fitting plate 333 produces an impact on the detection head of the dial indicator 7 through displacement. The generated pressure causes the degree of the dial indicator 7 to change, and the maximum deflection value of the dial indicator 7 is recorded. At the same time, the scale block 34 slides in the third slide groove 101, and the maximum and minimum values ​​on the scale line pointed to by the scale block 34 are recorded. The infrared lamp 5 is turned on to make the infrared light directly illuminate the detection surface of the active infrared ranging sensor 6. The active infrared ranging sensor 6 measures the distance moved by the light source when the worm 9 rotates. After the rotation is completed, three sets of data are obtained, namely the maximum deflection value of the dial indicator 7, the difference between the maximum and minimum values ​​on the scale line, and the distance of the light source moved measured by the active infrared ranging sensor 6. The staff can verify each other through the three sets of data, reducing the error that may be caused by a single measurement method and improving the accuracy and reliability of the overall measurement.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0043] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features of the present invention.

Claims

1. A device for measuring the center distance of a worm gear meshing, characterized in that: The invention comprises a base plate (1), a support plate (2) and a sliding block (3), wherein the support plate (2) is vertically mounted on one end of the base plate (1), the sliding block (3) slides on the base plate (1), the sliding block (3) and the support plate (2) are elastically connected, a worm wheel (4) is rotatably connected to the sliding block (3), and a worm (9) is rotatably clamped on the support plate (2); A scale measuring mechanism, wherein a measuring end thereof is mounted on a support plate (2), the measuring end of the scale measuring mechanism being a scale (10), a scale block (34) being provided on the sliding block (3), and the scale block (34) pointing to a scale line of the scale (10); A dial indicator measuring mechanism, wherein a measuring end thereof is mounted on a support plate (2), the measuring end of the dial indicator measuring mechanism being a dial indicator (7), a dial indicator fitting mechanism (33) being mounted on the sliding block (3), and the fitting end of the dial indicator fitting mechanism (33) fitting with the measuring head of the dial indicator (7) after the worm wheel (4) and the worm (9) are fitted together; An infrared measuring mechanism, whose measuring end is mounted on the base plate (1), wherein the measuring end of the infrared measuring mechanism is an active infrared distance sensor (6), and an infrared emitting device is provided on the sliding block (3), and the infrared rays emitted directly irradiate the receiving end of the active infrared distance sensor (6); The scale measuring mechanism, the dial indicator measuring mechanism and the infrared measuring mechanism form a multiple measuring assembly. When the worm (9) and the worm wheel (4) are fitted together and rotate one circle, the multiple measuring assembly measures multiple sets of data.

2. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The support plate (2) is provided with a clamping mechanism (21), and the clamping mechanism (21) comprises: A second sliding groove (211) is provided on a side of the support plate (2) close to the sliding block (3) along the length direction; a slow-speed motor (212) fixedly connected to one end of the second chute (211); an output end of the slow-speed motor (212) passing through the side wall of the support plate (2) and fixedly connected to a screw, the screw being rotatably connected to the side wall of the second chute (211); The movable plate (213) is threadedly connected to the screw rod. The slow motor (212) drives the movable plate (213) transversely. The movable plate (213) is provided with a rotating shaft. The other end of the second slide groove (211) is fixedly connected with a clamping plate. The clamping plate has the same structure as the movable plate (213). After the movable plate (213) moves, it rotates with the clamping plate to clamp the worm (9).

3. The worm gear meshing center distance measuring device according to claim 2, characterized in that: A handle (214) is rotatably connected to the side wall of the movable plate (213), and a connecting end of the handle (214) passes through the side wall of the support plate (2) and is fixedly connected to the rotating shaft.

4. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The scale measuring mechanism further comprises: A convex block (22) is mounted on the side wall of the support plate (2), and the convex block (22) is fixedly connected to the scale (10): A third sliding groove (101) is provided on the scale (10) along the length direction, and the scale block (34) slides in the third sliding groove (101).

5. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The dial indicator fitting mechanism (33) comprises: An opening (332) is provided on the sliding block (3), a cylinder (331) is installed transversely in the opening (332), an output end of the cylinder (331) is fixedly connected to a fitting plate (333), and the fitting plate (333) fits with the measuring head of the dial indicator (7) after being extended or retracted.

6. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The lower end of the sliding block (3) is fixedly connected to a roller (32), the upper surface of the bottom plate (1) is provided with a first sliding groove (11) along the length direction, and the roller (32) is rollingly connected to the first sliding groove (11).

7. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The infrared measurement mechanism further comprises: An infrared lamp (5) is an infrared emitting device of an infrared measuring mechanism, which is installed at the lower end of the sliding block (3). The infrared light emitted by the infrared lamp (5) directly irradiates the receiving end of the active infrared ranging sensor (6).

8. The worm gear meshing center distance measuring device according to claim 1, characterized in that: It also includes a return spring (8), and the sliding block (3) and the support plate (2) are elastically connected via the return spring (8).

9. The worm gear meshing center distance measuring device according to claim 1, characterized in that: The upper end of the sliding block (3) is fixedly connected to a column (31), and the worm wheel (4) is rotatably sleeved on the column (31).

10. The worm gear meshing center distance measuring device according to claim 9, characterized in that: A bearing is provided at the portion where the worm wheel (4) contacts the column (31).

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