Gear inspection and correction device

Abstract

According to the gear inspection and correction device, a gear comprises a body, an outer ring body arranged around the circumferential direction of the body, and a plurality of spokes which are connected between the body and the outer ring body and are distributed around the center line direction of the body at intervals, and a plurality of tooth tips which are annularly distributed at intervals are formed on the outer edge of the outer ring body. The checking and correcting device comprises a fixed die, a movable die and a torsion component, fixed grooves correspondingly matched with the spokes are formed in the fixed die, movable grooves correspondingly matched with the spokes are formed in the movable die, the gear is placed between the fixed die and the movable die, and the torsion component is arranged between the fixed die and the movable die. And one part of each spoke is inserted into the corresponding fixed groove, and the other part of each spoke is inserted into the corresponding movable groove. On one hand, the spoke is driven to be subjected to torsional deformation through relative movement of the fixed die and the movable die, deviation between the corresponding spoke and a tooth tip is eliminated, and therefore the requirement for machining precision is met, and the percent of pass of products can be greatly improved; on the other hand, the structure is simple and reliable, operation is very convenient, and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of precision machining, and in particular relates to a gear inspection and correction device. Background Art

[0002] There is a gear having a plurality of spokes spaced apart around its center line, and a plurality of tooth tips spaced apart in a ring shape are formed on the outer edge of the gear.

[0003] At present, when the gear is processed, the gear profile is first preliminarily processed into shape, then the gear is clamped, and then the tooth tips are cut one by one along the edge of the gear while the gear is rotating.

[0004] However, due to the precision requirements on the angle of the spoke and the direction of the tooth tip in the process, the clamping of the gear is random in the actual processing, and it is impossible to control the angle of the spoke and the direction of the tooth tip to meet the precision requirements. Under normal processing, only 50% of the gear products are qualified, and the product qualification rate is low. Therefore, it is urgent to design a device that can inspect and correct gears. Summary of the invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a brand-new gear inspection and correction device.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A gear inspection and correction device, the gear comprises a body, an outer ring body arranged around the body in a circumferential direction, a plurality of spokes connected between the body and the outer ring body and spaced around the center line of the body, wherein the outer edge of the outer ring body is formed with a plurality of tooth tips spaced in a ring shape, the inspection and correction device comprises a fixed die, a movable die and a torque component, wherein the fixed die is formed with fixed grooves corresponding to and matching the plurality of spokes, the movable die is formed with movable grooves corresponding to and matching the plurality of spokes, the gear is placed between the fixed die and the movable die, a part of each spoke is inserted in the corresponding fixed groove, and another part is inserted in the corresponding movable groove, the torque component is used to drive the movable die to rotate around the center line of the gear and drive the tooth tip with the smallest angle on the gear to align with the spoke.

[0008] Preferably, the length of each spoke is d1, the length of the fixed groove is d2, wherein 0.45d1≤d2≤0.55d1. The proportion of the spokes in the fixed groove and the movable groove is controlled to achieve the correction of spoke deformation while preventing the spokes from overcorrecting and causing cracking or breaking.

[0009] According to a specific implementation and preferred aspect of the utility model, a plurality of first positioning modules are provided on the fixed mold and are spaced apart around the center line of the body, wherein each first positioning module is correspondingly inserted between two adjacent spokes, and a fixed groove is formed between every two adjacent first positioning modules.

[0010] Preferably, the movable mold is provided with a plurality of second positioning modules spaced apart around the center line of the body, wherein each second positioning module is correspondingly inserted between two adjacent spokes, and a movable groove is formed between each two adjacent second positioning modules. This arrangement has a simple structure and is easy to install and implement.

[0011] Preferably, each first positioning module is spliced ​​with the corresponding second positioning module in a relative position; and / or, a space is formed between each two adjacent spokes, the outer ring body and the body, and the side walls of each first positioning module and the second positioning module are fitted with the side walls of the corresponding space. Here, the space between the spokes can be well supported, thereby preventing the overall deformation of the gear.

[0012] According to another specific implementation and preferred aspect of the utility model, the body is further formed with an annular protrusion protruding downward from the bottom edge, the fixed mold is formed with an annular positioning groove matching the protrusion, and the body is inserted into the positioning groove from the protrusion, thereby facilitating the rapid positioning of the gear.

[0013] According to another specific implementation and preferred aspect of the utility model, a placement groove with a circular cross-section is formed on the fixed mold, wherein the diameter of the placement groove is larger than the diameter of the gear, and the fixed groove is located in the placement groove. During the inspection and correction process, the gear is located in the placement groove. Here, during the entire inspection and correction process, the gear sinks into the placement groove, so that the gear part can be prevented from accidentally jumping out of the surroundings due to force (the torque applied to the gear during the inspection is very large), thereby improving the safety of the equipment.

[0014] According to another specific implementation and preferred aspect of the utility model, a plug-in slot matching the main body is formed on the movable mold, and when placed, the main body is inserted into the plug-in slot.

[0015] According to another specific implementation and preferred aspect of the utility model, the movable mold is also provided with a plurality of guide grooves spaced around the center line of the body, and the fixed mold is fixed with a plurality of guide pillars, and each guide pillar is correspondingly inserted into each guide groove, and during inspection and correction, as the movable mold rotates, the guide pillar moves relatively along the guide groove. Hereby, the force direction of the spoke is ensured to be accurate, and the success rate of correction is improved.

[0016] In addition, the torsion component includes a pressure handle fixedly connected to the movable mold away from the gear side and a press connected to the pressure handle, wherein the press drives the pressure handle to rotate around the center line of the body, and the movable mold rotates synchronously therewith.

[0017] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The gears of the prior art cannot control the angle of the spoke and the direction of the tooth tip to meet the precision requirements during processing, resulting in a low product qualification rate. The present application designs the structure of the gear inspection and correction device as a whole, and cleverly solves the shortcomings and defects of the prior art. After adopting the inspection and correction device, first compare the various directions to determine the tooth tip and the spoke with the smallest deviation angle in the gear, and mark them. Then, the gear is placed between the fixed mold and the movable mold, wherein each spoke on the gear is inserted in the fixed groove from one part and in the movable groove from the other part. Then, the movable mold is driven by the torsion component to rotate around the center line of the gear, thereby driving the spoke torsional deformation, so that the marked tooth tip with the smallest deviation angle is aligned with the spoke, and the inspection and correction of the gear is completed. Therefore, compared with the prior art, the present invention, on the one hand, drives the spoke to torsion deformation through the relative movement of the fixed and movable molds, eliminates the deviation between the corresponding spoke and the tooth tip, thereby meeting the processing precision requirements and greatly improving the qualification rate of the product; on the other hand, the structure is simple and reliable, the operation is very convenient, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the gear inspection and correction device of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure decomposition of the gear inspection and correction device of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure decomposition of the gear inspection and correction device of the utility model at another angle;

[0022] Figure 4 It is a half-section schematic diagram of the gear inspection and correction device of the utility model;

[0023] Wherein: 1, fixed mold; c1, placement groove; c2, positioning groove; 11, first positioning module; c3, fixed groove; 12, guide column;

[0024] 2, moving mold; 22, second positioning module; c4, moving groove; c5, plug-in groove; c6, guide groove;

[0025] 3. Torque component; 30. Press handle;

[0026] L, gear; L0, main body; L00, raised part; L1, outer ring body; L10, tooth tip; L2, spoke. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] like Figures 1 to 4 As shown, the gear inspection and correction device involved in this embodiment includes a fixed mold 1, a movable mold 2, and a torque component 3; the gear L of this embodiment includes a main body L0, an outer ring body L1 arranged circumferentially around the main body L0, and a plurality of spokes L2 connected between the main body L0 and the outer ring body L1 and distributed at intervals around the center line direction of the main body L0, wherein the outer edge of the outer ring body L1 is formed with a plurality of tooth tips L10 distributed in a ring-like manner.

[0033] Specifically, the fixed mold 1 is a horizontally placed rectangular plate, wherein the fixed mold 1 is recessed inward from the top surface to form a placement groove c1, the cross-section of the placement groove c1 is circular, and the diameter of the placement groove c1 is larger than the diameter of the gear L; the center of the bottom of the placement groove c1 is recessed inward to form an annular positioning groove c2, and an annular protrusion L00 is also formed on the main body L0, which protrudes downward from the bottom edge and matches the positioning groove c2. The main body L0 is inserted into the positioning groove c2 from the protrusion L00, and during inspection and correction, the gear L is located in the placement groove c1.

[0034] At the same time, the fixed mold 1 is provided with a plurality of first positioning modules 11 located in the placement groove c1 and spaced around the center line direction of the body L0, wherein each first positioning module 11 is correspondingly inserted between two adjacent spokes L2, and a fixed groove c3 corresponding to and matching each spoke L2 is formed between each two adjacent first positioning modules 11. In some specific embodiments, the length of each spoke L2 is d1, and the groove length of the fixed groove c3 is d2, wherein 0.45d1≤d2≤0.55d1, preferably, d2=0.5d1.

[0035] In this example, the bottom surface of the movable mold 2 is provided with a plurality of second positioning modules 22 spaced apart around the center line direction of the main body L0, wherein each second positioning module 22 is correspondingly inserted between two adjacent spokes L2, and a movable groove c4 corresponding to and matching each spoke L2 is formed between each two adjacent second positioning modules 22.

[0036] At the same time, a plug-in groove c 5 matching with the main body L0 is formed on the bottom surface of the movable mold 2. When placed, the main body L0 is inserted into the plug-in groove c 5.

[0037] That is to say, during inspection and calibration, the gear L is placed between the fixed mold 1 and the movable mold 2, and a portion of each spoke L2 is inserted into the corresponding fixed groove c3, and the other portion is inserted into the corresponding movable groove c4. The torque component 3 is used to drive the movable mold 2 to rotate around the center line of the gear L and drive the tooth tip L10 with the smallest angle on the gear L to align with the spoke L2.

[0038] For ease of implementation, each first positioning module 11 is spliced ​​with the corresponding second positioning module 22 in relative position; a space is formed between each two adjacent spokes L2, the outer ring body L1 and the main body L0, and each first positioning module 11 and the second positioning module 22 fits with the side wall of the corresponding space from the side wall.

[0039] At the same time, the movable mold 2 is also provided with a plurality of guide grooves c6 which are spaced around the center line of the main body and pass through from top to bottom. A plurality of guide pillars 12 are fixedly provided on the fixed mold 1, and each guide pillar 12 is correspondingly inserted into each guide groove c6. During inspection and correction, as the movable mold 2 rotates, the guide pillars 12 move relatively along the guide grooves c6.

[0040] In addition, the torsion component 3 includes a pressure handle 30 fixedly connected to the movable mold 2 away from the gear L, and a press connected to the pressure handle 30, wherein the press drives the pressure handle 30 to rotate around the center line of the body L0, and the movable mold 2 rotates synchronously therewith.

[0041] In summary, after adopting the inspection and correction device, first compare all directions to determine the tooth tip and spoke with the smallest deviation angle in the gear, and mark them, and then place the gear between the fixed mold and the movable mold, wherein each spoke on the gear is inserted into the fixed groove from one part and the movable groove from the other part, and then drive the movable mold to rotate around the center line of the gear through the torque component, thereby driving the spoke torsional deformation, so that the tooth tip and spoke with the smallest deviation angle marked are aligned, and the inspection and correction of the gear are completed. Therefore, compared with the prior art, the utility model, on the one hand, drives the spoke to torsion deformation through the relative movement of the fixed and movable molds, eliminates the deviation between the corresponding spoke and the tooth tip, thereby achieving machining precision. The degree requirement can be met, which can greatly improve the qualified rate of products, and the qualified rate can reach more than 85%; on the other hand, the structure is simple and reliable, the operation is very convenient and the cost is low; on the third hand, the proportion of the spokes in the fixed groove and the movable groove is controlled to prevent the spokes from being overcorrected and causing cracking or breaking while realizing the correction of spoke deformation; on the fourth hand, the first and second positioning modules can provide a good support for the space between the spokes, thereby avoiding the overall deformation of the gear; on the fifth hand, during the entire inspection and correction process, the gear sinks into the placement groove, so that the gear part can be prevented from accidentally jumping out to the surroundings due to force (the torque applied to the gear during the inspection is very large), thereby improving the safety of the equipment.

[0042] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A gear inspection and correction device, the gear comprising a body, an outer ring body arranged circumferentially around the body, and a plurality of spokes connected between the body and the outer ring body and spaced around the center line of the body, wherein the outer edge of the outer ring body is formed with a plurality of tooth tips spaced in an annular manner, characterized in that: The inspection and correction device includes a fixed mold, a movable mold and a torsion component, wherein the fixed mold is formed with a fixed groove corresponding to the multiple spokes, and the movable mold is formed with a movable groove corresponding to the multiple spokes. The gear is placed between the fixed mold and the movable mold, and a part of each spoke is inserted in the corresponding fixed groove, and the other part is inserted in the corresponding movable groove. The torsion component is used to drive the movable mold to rotate around the center line of the gear and drive the tooth tip with the smallest angle on the gear to align with the spoke.

2. The gear inspection and correction device according to claim 1, characterized in that: The length of each spoke is d1, and the length of the fixed groove is d2, wherein 0.45d1≤d2≤0.55d1.

3. The gear inspection and correction device according to claim 1 or 2, characterized in that: The fixed mold is provided with a plurality of first positioning modules spaced apart around the center line of the body, wherein each of the first positioning modules is correspondingly inserted between two adjacent spokes, and a fixed groove is formed between every two adjacent first positioning modules.

4. The gear inspection and correction device according to claim 3, characterized in that: The movable mold is provided with a plurality of second positioning modules spaced apart around the center line of the body, wherein each of the second positioning modules is correspondingly inserted between two adjacent spokes, and the movable groove is formed between every two adjacent second positioning modules.

5. The gear inspection and correction device according to claim 4, characterized in that: Each of the first positioning modules is spliced ​​with the corresponding second positioning module in relative position; and / or, a space is formed between each two adjacent spokes, the outer ring body and the main body, and each of the first positioning module and the second positioning module fits with the corresponding side wall of the space from the side wall.

6. The gear inspection and correction device according to claim 1, characterized in that: The main body is also formed with an annular protrusion protruding downward from the bottom edge, the fixed mold is formed with an annular positioning groove matching the protrusion, and the main body is inserted into the positioning groove from the protrusion.

7. The gear inspection and correction device according to claim 1, characterized in that: The fixed die is also formed with a placement groove with a circular cross-section, wherein the diameter of the placement groove is larger than the diameter of the gear, the fixed groove is located in the placement groove, and during inspection and correction, the gear is located in the placement groove.

8. The gear inspection and correction device according to claim 1, characterized in that: The movable mold is also formed with an inserting groove matching the main body. When placed, the main body is inserted into the inserting groove.

9. The gear inspection and correction device according to claim 1, characterized in that: The movable mold is also provided with a plurality of guide grooves spaced apart around the center line of the body, and the fixed mold is fixed with a plurality of guide pillars, and each of the guide pillars is correspondingly inserted into each of the guide grooves. During inspection and correction, as the movable mold rotates, the guide pillars move relatively along the guide grooves.

10. The gear inspection and correction device according to claim 1, characterized in that: The torsion component includes a pressure handle fixedly connected to the movable mold on a side away from the gear, and a press connected to the pressure handle, wherein the press drives the pressure handle to rotate around the center line of the body, and the movable mold rotates synchronously therewith.

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