Aperture detection device for large-aperture grinding wheel

Abstract

The utility model belongs to the technical field of quality detection devices, and particularly relates to an aperture detection device for a large-aperture grinding wheel, which comprises a bracket, an operating piece which is sleeved on the bracket and can move along the axis of the bracket, and two measuring arms which are detachably connected to the operating piece, the measuring arm comprises connecting rings arranged on the operating piece in a sleeving mode, a supporting arm perpendicularly connected to the connecting rings, a telescopic arm connected to the supporting arm and matched with the supporting arm to adjust the length of the measuring arm, and a first limiting assembly used for synchronously limiting the two connecting rings. A second limiting assembly which is the same as the limiting assembly in structure is arranged between the connecting ring and the operating piece. Scales are arranged on the supporting arm. The device is used for solving the technical problems that an existing device used for detecting the aperture of a large-aperture grinding wheel is heavy, and the aperture of the grinding wheel cannot be conveniently and rapidly detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of quality detection devices, and in particular relates to an aperture detection device for a large-aperture grinding wheel. Background Art

[0002] Grinding wheel, also known as bonded abrasive, is a bonded abrasive that is made of ordinary abrasives bonded into a certain shape and has a certain strength. Grinding wheel is generally composed of abrasive, bond and pores, which are often called the three elements of bonded abrasive. According to the different classifications of bond, common ones are ceramic (bond) grinding wheel, resin (bond) grinding wheel and rubber (bond) grinding wheel. Because the grinding wheel rotates at high speed when used, it can be used for rough grinding, semi-finishing grinding and fine grinding of the outer circle, inner circle, plane and various profiles of metal or non-metal workpieces, as well as slotting and cutting, etc., and has become the most widely used and widely used abrasive.

[0003] Most grinding wheels are round with a through hole in the center, and the diameter of the center of the grinding wheel needs to be tested after it is manufactured to ensure the qualification of the diameter. At present, the diameter of the grinding wheel is usually tested by a grinding tool smooth limit gauge, which is usually made of iron material that is not easy to deform and is heavy. Especially for large grinding wheels with a diameter of 1000mm to 1200mm, the gauge for testing the diameter is heavier and difficult to control, which makes it inconvenient to test the diameter of the grinding wheel. At the same time, the detection speed is slow and the work efficiency is low. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an aperture detection device for large-aperture grinding wheels, which is used to solve the technical problem that the current instruments used to detect the aperture of large-aperture grinding wheels are relatively heavy and inconvenient to quickly detect the aperture of the grinding wheel.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: an aperture detection device for a large-aperture grinding wheel, the detection device comprising a bracket, an operating member mounted on the bracket and movable along the axis of the bracket, and two measuring arms detachably connected to the operating member; the measuring arm comprises a connecting ring mounted on the operating member, a support arm vertically connected to the connecting ring, a telescopic arm connected to the support arm and cooperating with the support arm to adjust the length of the measuring arm, and a first limiting assembly for synchronizing the limiting positions of the two connecting rings; a second limiting assembly with the same structure as the limiting assembly is arranged between the connecting ring and the operating member; a scale is arranged on the support arm.

[0006] Preferably, the first limiting assembly includes a limiting groove and a limiting protrusion arranged on the end face of the connecting ring, and the limiting groove and the limiting protrusion on the end face of one connecting ring are embedded and matched with the limiting protrusion and the limiting groove corresponding to the end face of another connecting ring to achieve synchronization of the two connecting rings.

[0007] Preferably, the telescopic arm is sleeved on the supporting arm and is locked and positioned by a locking bolt.

[0008] Preferably, the measuring arm further comprises a roller arranged at the end of the telescopic arm.

[0009] Preferably, a support platform is circumferentially arranged at the lower end of the operating member, and the limiting groove and the limiting protrusion in the second limiting assembly are arranged on the support platform.

[0010] Preferably, the operating member is connected to the bracket via a linear bearing.

[0011] Preferably, a handle is provided on the upper end of the operating member.

[0012] The beneficial effects of adopting the technical solution of the utility model are:

[0013] The utility model has two adjustable measuring arms connected to the operating part. By adjusting the length of the measuring arm and placing the adjusted detection device in the through hole of the grinding wheel, the operating part is driven to rotate and the measuring arm is driven to rotate. When the length of the measuring arm is adjusted to the minimum reasonable error value of the qualified aperture, if the measuring device can smoothly rotate in the through hole, it means that the minimum aperture value is qualified. When the length of the measuring arm is adjusted to the maximum reasonable error value of the qualified aperture, if the measuring device can smoothly rotate in the through hole, it means that the aperture is greater than the maximum reasonable error value. If it cannot rotate smoothly, it means that the maximum aperture value is qualified. By setting a bracket and an operating part sleeved on the bracket, the operating part can rotate relative to the bracket and can move along the axis of the bracket. In this way, when the thickness of the grinding wheel is large, the operating part moves up and down while rotating, which is convenient for detecting the qualification of the through hole at various places above and below, and improves the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of an embodiment of an aperture detection device for a large-aperture grinding wheel;

[0015] Figure 2 This is a schematic diagram of the cooperation between a bracket and an operating member of an embodiment of an aperture detection device for a large-aperture grinding wheel;

[0016] Figure 3 It is a schematic diagram of the front view of a measuring arm of an embodiment of an aperture detection device for a large-aperture grinding wheel;

[0017] Figure 4The present invention is a schematic rear view of a measuring arm of an embodiment of an aperture detection device for a large-aperture grinding wheel.

[0018] in, Figure 1-4 In the figure, 1- bracket, 2- operating part, 21- supporting platform, 22- handle, 23- linear bearing, 3- measuring arm, 31- connecting ring, 32- supporting arm, 321- scale, 33- locking bolt, 34- telescopic arm, 35- roller, 41- limiting groove, 42- limiting protrusion. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and do not limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The specific embodiments are as follows:

[0023] Embodiment 1, as Figure 1-4 As shown, an aperture detection device for a large-aperture grinding wheel includes a bracket 1, an operating member 2, and a measuring arm 3. The bracket 1 is composed of a supporting disc and a pillar vertically connected to the supporting disc. The operating member 2 is sleeved on the pillar and can rotate relative to the pillar and move up and down along the axis of the pillar. In this embodiment, the operating member 2 is in the form of a cylindrical barrel.

[0024] Two measuring arms 3 are provided, and the two measuring arms 3 are detachably connected to the operating member 2. The measuring arm 3 includes a connecting ring 31, a supporting arm 32, a telescopic arm 34 and a first limiting assembly 4. The connecting ring 31 is sleeved on the operating member 2. The supporting arm 32 is vertically connected to the connecting ring 31 and is perpendicular to the operating member 2. The telescopic arm 34 is adjustably connected to the supporting arm 32, and a scale 321 is provided on the supporting arm 32; by adjusting the overlap between the supporting arm 32 and the telescopic arm 34, and in conjunction with the scale 321 mark, the length of the measuring arm 3 can be adjusted. The first limiting assembly 4 is used to limit and lock the two connecting rings 31 sleeved on the operating member 2 to ensure the synchronization of the two connecting rings 31.

[0025] A second position-limiting assembly is provided between the connecting ring 31 and the operating member 2 to limit and lock the connecting ring 31 and the operating member 2 to ensure synchronization. The second position-limiting assembly has the same structure as the first position-limiting assembly 4 .

[0026] Furthermore, the first limiting assembly 4 includes a limiting groove 41 and a limiting protrusion 42. The limiting groove 41 and the limiting protrusion 42 are arranged on the upper and lower end surfaces of the connecting ring 31. The limiting groove 41 on the upper end surface of the connecting ring 31 corresponds to the limiting protrusion 42 on the lower end surface, and the limiting protrusion 42 on the upper end surface of the connecting ring 31 corresponds to the limiting groove 41 on the lower end surface. In this way, when the two measuring arms 3 are symmetrically connected to the operating member 2, the upper connecting ring 31 and the lower connecting ring 31 are limited and locked by the first limiting assembly 4, so as to ensure the synchronous rotation of the two measuring arms 3.

[0027] Furthermore, a long hole is provided on the telescopic arm 34, which is sleeved on the support arm 32 through the long hole, and a locking bolt 33 passes horizontally through the telescopic arm 34. The support arm 32 and the telescopic arm 34 are locked by the locking bolt 33 to fix the length of the measuring arm 3.

[0028] Furthermore, a roller 35 is provided at the end of the telescopic arm 34 to facilitate sliding along the inner wall of the through hole of the grinding wheel during detection.

[0029] Furthermore, a support platform 21 is circumferentially provided at the lower end of the operating member 2. The connecting ring 31 is supported by the support platform 21, and the limiting groove 41 and the limiting protrusion 42 of the second limiting assembly are provided on the support platform 21, so as to realize the limiting locking between the connecting ring 31 and the operating member 2.

[0030] Furthermore, a linear bearing 23 is provided in the operating member 2 and connected to the bracket 1 via the linear bearing to ensure smooth rotation and up and down movement of the operating member 2 .

[0031] Furthermore, a handle is provided at the upper end of the operating member 2 to facilitate the user to grasp and use it, thereby improving the comfort of use.

[0032] When using the aperture detection device for a large-aperture grinding wheel of this embodiment, loosen the locking bolt 33 and adjust the length of the two measuring arms 3. Take a grinding wheel with a qualified aperture of 1100mm and an allowable deviation of 0-0.6mm as an example. First, adjust the length of the measuring arm 3 to a rotation radius of 1100mm for the detection device, place the detection device in the through hole of the grinding wheel, and both measuring arms 3 are in the through hole. The user holds the handle 22 to rotate. If the measuring arm 3 can rotate smoothly, it means that the minimum value of the aperture deviation of the through hole is qualified. Then, readjust the length of the measuring arm 3 to a rotation radius of 1100.6mm for the detection device, and the user holds the handle 22 to rotate. If the measuring arm 3 can rotate smoothly, it means that the aperture deviation of the through hole is greater than its maximum allowable value, that is, the through hole is unqualified; if there is an obstruction during the rotation of the measuring arm 3, it means that the aperture deviation is within the allowable range, that is, the through hole is qualified. When the grinding wheel is thick, the handle 22 is held up and down and rotated to detect the apertures at various locations above and below the inner hole of the grinding wheel, thereby improving the versatility of the detection device.

[0033] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An aperture detection device for a large-aperture grinding wheel, characterized in that: The detection device includes a bracket, an operating member mounted on the bracket and capable of moving along the axis of the bracket, and two measuring arms detachably connected to the operating member; the measuring arm includes a connecting ring mounted on the operating member, a supporting arm vertically connected to the connecting ring, a telescopic arm connected to the supporting arm and cooperating with the supporting arm to adjust the length of the measuring arm, and a first limiting assembly for synchronizing the limiting positions of the two connecting rings; a second limiting assembly with the same structure as the limiting assembly is arranged between the connecting ring and the operating member; and a scale is arranged on the supporting arm.

2. The aperture detection device for a large-aperture grinding wheel according to claim 1, characterized in that: The first limiting assembly includes a limiting groove and a limiting protrusion arranged on the end face of the connecting ring. The limiting groove and the limiting protrusion on the end face of one connecting ring are embedded and matched with the limiting protrusion and the limiting groove corresponding to the end face of another connecting ring to achieve synchronization of the two connecting rings.

3. The aperture detection device for a large-aperture grinding wheel according to claim 2, characterized in that: The telescopic arm is sleeved on the supporting arm and is locked and positioned by a locking bolt.

4. The aperture detection device for a large-aperture grinding wheel according to claim 3, characterized in that: The measuring arm further comprises a roller arranged at the end of the telescopic arm.

5. The aperture detection device for a large-aperture grinding wheel according to any one of claims 1 to 4, characterized in that: A support platform is circumferentially arranged at the lower end of the operating member, and the limiting groove and the limiting protrusion in the second limiting assembly are arranged on the support platform.

6. The aperture detection device for a large-aperture grinding wheel according to claim 5, characterized in that: The operating member is connected to the bracket via a linear bearing.

7. The aperture detection device for a large-aperture grinding wheel according to claim 6, characterized in that: A handle is arranged on the upper end of the operating member.

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