Grinding wheel outer diameter measuring device

Abstract

The utility model belongs to the technical field of measuring tools, and particularly relates to a grinding wheel outer diameter measuring device, which comprises a fixed bottom plate, and a first guide mechanism, a trolley moving mechanism and an outer diameter measuring mechanism which are arranged at the top end of the fixed bottom plate, the first guide mechanism comprises a first trolley guide rail, a second trolley guide rail, a first guide device screw rod, a first guide device screw rod fixing seat, a second guide device screw rod fixing seat and a positioning shaft supporting seat; the first guide device lead screw fixing seat is arranged on the front side of the top end of the fixing bottom plate, and the second guide device lead screw fixing seat is arranged on the rear side of the top end of the fixing bottom plate. The measuring device has the advantages that the mode of measuring the outer diameter of the grinding wheel by using a vernier caliper is changed into the mode of measuring the outer diameter by using the fixed displacement sensor measuring device, and the accuracy and the efficiency of measuring the outer diameter of the grinding wheel can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring tools, and in particular relates to the quality inspection technology of cylindrical products such as grinding wheels or metal products, and specifically relates to a large-diameter grinding wheel outer diameter measuring device. The application is mainly used in the quality inspection link of large-diameter grinding wheels after processing. Background Art

[0002] With the continuous development and progress of my country's manufacturing industry, the grinding tool industry has also ushered in rapid development. The grinding tool industry, which is known as the teeth of the manufacturing industry, has been committed to solving the problem of how to improve the measurement efficiency and accuracy of grinding tools (such as grinding wheels) with the advancement of technology.

[0003] At present, domestic grinding wheel manufacturers still mainly rely on vernier calipers to detect the shape of grinding wheels, but this measurement method has the following problems: 1. First, the accuracy of the vernier caliper is generally only 0.02mm, which cannot meet the needs of grinding wheels with higher requirements for shape and size accuracy; 2. Secondly, the human factor has a greater impact when measuring with a vernier caliper. The direction, measurement force, and decimal place of each measurement will be different; 3. Finally, the long-term contact between the vernier caliper and the grinding wheel surface will cause serious wear of the caliper mouth and inaccurate measurement.

[0004] Although the prior art discloses a variety of measuring devices and methods for grinding tools, they all have different problems. For example, a Chinese patent with authorization announcement number CN207866189U discloses an automatic measuring device for the diameter of a grinding wheel. The distance between the first sensor and the second sensor is measured, and then the diameter of the disc bracket is automatically added to obtain the diameter value of the measured grinding wheel. Although the measurement method in this patent is simple and convenient, it mainly relies on sensors for measurement and has no positioning structure. Not only is measurement deviation prone to occur, but the purely electrical structure measurement method also has the problem of low measurement stability.

[0005] Based on this, the present application designs a grinding wheel outer diameter measuring device, which can be particularly used for measuring the outer diameter of large diameter grinding wheels. By adopting a first guide mechanism and a trolley moving mechanism, the stability of the positioning of the grinding wheel can be improved. At the same time, the outer diameter of the grinding wheel can be accurately measured through the outer diameter measuring mechanism. It is widely used and can improve the measurement efficiency. Utility Model Content

[0006] The utility model provides a large-diameter grinding wheel outer diameter measuring device, which has the advantage of changing the method of measuring the grinding wheel outer diameter with a vernier caliper into measuring with a fixed displacement sensor measuring device, thereby improving the accuracy and efficiency of the grinding wheel outer diameter measurement.

[0007] Based on the above purpose, the utility model adopts the following technical solutions:

[0008] A grinding wheel outer diameter measuring device comprises a fixed base plate, a first guide mechanism arranged on the top of the fixed base plate, a trolley moving mechanism and an outer diameter measuring mechanism;

[0009] The first guide mechanism includes a first trolley guide rail, a second trolley guide rail, a first guide device screw, a first guide device screw fixing seat, a second guide device screw fixing seat and a positioning shaft support seat;

[0010] The first guide device screw rod fixing seat is arranged at the front side of the top end of the fixed bottom plate, and the second guide device screw rod fixing seat is arranged at the rear side of the top end of the fixed bottom plate;

[0011] The first trolley guide rail is installed on the top of the fixed base plate, the left side of the first guide device screw fixing seat and the second guide device screw fixing seat, and the second trolley guide rail is located on the top of the fixed base plate, the right side of the first guide device screw fixing seat and the second guide device screw fixing seat;

[0012] The positioning shaft support seat is arranged at the rear side of the screw rod fixing seat of the second guide device, and a positioning shaft extending upward in the vertical direction is arranged at the top end of the positioning shaft support seat;

[0013] The first guide device screw rod includes a first rotating part, a first screw rod part and a second rotating part from front to back;

[0014] The first rotating part of the first guide device screw can be rotatably connected to the first guide device screw fixing seat, and the second rotating part of the first guide device screw can be rotatably connected to the second guide device screw fixing seat;

[0015] A first hand wheel is also provided at the front end of the first rotating part;

[0016] The trolley moving mechanism comprises a trolley moving bottom plate, a first guide rail slider, a second guide rail slider and a first guide device screw moving block;

[0017] A limiting structure for limiting the installation position of the grinding wheel is provided at the top of the movable bottom plate of the trolley;

[0018] The first guide rail slider is arranged on the left side of the bottom end of the trolley moving bottom plate, and the second guide rail slider is arranged on the right side of the bottom end of the trolley moving bottom plate;

[0019] The first guide rail slider is slidably connected to the first trolley guide rail, and the second guide rail slider is slidably connected to the second trolley guide rail, so that the trolley movable bottom plate can be moved forward and backward;

[0020] The first guide device screw rod moving block is arranged in the middle of the bottom end of the trolley moving bottom plate, and the first guide device screw rod moving block is connected to the first guide device screw rod;

[0021] By rotating the first guide device screw, the first guide device screw moving block can be moved forward and backward along the first guide device screw, and the trolley moving bottom plate is driven to move forward and backward along the extension direction of the first trolley guide rail and the second trolley guide rail;

[0022] The outer diameter measuring mechanism includes a measuring device support platform, a second guiding mechanism and a displacement sensing mechanism arranged on the top of the measuring device support platform;

[0023] The second guide mechanism includes a second guide device screw, a third guide device screw fixing seat, a fourth guide device screw fixing seat, and a second guide device screw moving block;

[0024] The third guide device screw rod fixing seat is arranged at the front side of the top end of the measuring device support platform, and the fourth guide device screw rod fixing seat is arranged at the rear side of the top end of the measuring device support platform;

[0025] The second guide device screw rod includes a third rotating part, a second screw rod part and a fourth rotating part from front to back;

[0026] The third rotating portion of the second guide device screw can be rotatably connected to the third guide device screw fixing seat, and the fourth rotating portion of the second guide device screw can be rotatably connected to the fourth guide device screw fixing seat;

[0027] A second hand wheel is also provided at the front end of the third rotating part;

[0028] The second guide device lead screw moving block is connected to the second guide device lead screw;

[0029] By rotating the second guide device screw, the second guide device screw moving block can be moved forward and backward along the extension direction of the second guide device screw;

[0030] A first connecting block is provided at the top of the screw moving block of the second guide device, a measuring connecting rod is installed on the left side of the first connecting block, and a measuring head is provided at the left end of the measuring connecting rod;

[0031] The displacement sensing mechanism includes a third guide rod, a fifth guide rod fixing seat, a sixth guide rod fixing seat and a third guide rod moving block;

[0032] The sixth guide rod fixing seat is arranged at the rear side of the fifth guide rod fixing seat;

[0033] The third guide rod includes a fifth rod body, a sixth rod body and a seventh rod body from front to back;

[0034] The fifth rod body is rotatably connected to the fifth guide rod fixing seat, and the seventh rod body is rotatably connected to the sixth guide rod fixing seat;

[0035] The third guide rod moving block is provided with a sliding hole, the third guide rod moving block is passed through the sliding hole and is arranged outside the sixth rod body, and the third guide rod moving block can slide forward and backward on the sixth rod body along the extension direction of the sixth rod body;

[0036] A second connecting block is also provided at the left end of the third guide rod moving block, and the left end of the second connecting block is connected to the second guide device screw rod moving block;

[0037] The displacement sensing mechanism also includes a grating sensor, a grating ruler, a first fixing clip, and a second fixing clip;

[0038] The grating ruler extends forward and backward in the horizontal direction, and the front end of the grating ruler is installed on the right side of the fifth guide rod fixing seat through the first fixing clip, and the rear end of the grating ruler is installed on the right side of the sixth guide rod fixing seat through the second fixing clip;

[0039] The grating sensor moves on the grating scale and measures the moving distance, and the diameter of the grinding wheel can be measured through conversion (the diameter of the grinding wheel can be accurately calculated by subtracting the moving distance of the grating sensor from the total front and back length of the grating scale).

[0040] Furthermore, the first trolley guide rail, the second trolley guide rail, and the first guide device screw rod all extend forward and backward in the horizontal direction.

[0041] Furthermore, the left and right positions of the second guide device screw rod fixing seat correspond to those of the first guide device screw rod fixing seat.

[0042] Furthermore, the first trolley guide rail, the second trolley guide rail and the fixed base plate are all provided with threaded holes, and the first trolley guide rail and the second trolley guide rail can be installed on the top of the fixed base plate by bolt connection.

[0043] Furthermore, the first guide device screw fixing seat is provided with a first rotating hole, and the second guide device screw fixing seat is provided with a second rotating hole. The first rotating part passes through the first rotating hole from the rear end of the first rotating hole, and the second rotating part passes through the second rotating hole from the front end of the second rotating hole; and the first rotating part can rotate in the first rotating hole, and the second rotating part can rotate in the second rotating hole.

[0044] Further preferably, a rotating bearing is provided in both the first rotating hole and the second rotating hole, which can reduce the rotational friction during the rotation of the screw rod of the first guide device and improve the rotation efficiency.

[0045] Furthermore, the diameters of the first rotating part and the second rotating part are the same, and the diameter of the first screw rod part is larger than the diameters of the first rotating part and the second rotating part; by setting the diameters of the first rotating part, the second rotating part and the first screw rod part, the first screw rod part can be stuck between the first guide device screw rod fixing seat and the second guide device screw rod fixing seat.

[0046] Furthermore, the front end of the first rotating part extends forwardly out of the first rotating hole.

[0047] Further, the limiting structure includes a first side plate and a second side plate arranged at the top of the moving bottom plate of the trolley, the first side plate is located at the left front side of the top of the moving bottom plate of the trolley, and the second side plate is located at the right front side of the top of the moving bottom plate of the trolley;

[0048] The first side plate and the second side plate are both vertically arranged, and the left end of the first side plate is tilted backwards, and the right end of the second side plate is tilted backwards, and together with the movable bottom plate of the trolley, they enclose a mounting position for the grinding wheel.

[0049] Specifically, the left end of the first side plate is inclined at an angle of 40° to 50°, and the right end of the second side plate is inclined at an angle of 40° to 50°.

[0050] Furthermore, the first guide rail slider and the second guide rail slider are both detachably connected to the trolley moving bottom plate, specifically bolted; the specific bolt connection method is that the first guide rail slider, the second guide rail slider and the trolley moving bottom plate are all provided with threaded holes, and the first guide rail slider and the second guide rail slider are installed at the bottom end of the trolley moving bottom plate by bolt connection;

[0051] A first sliding groove is provided at the bottom end of the first guide rail slider, and a second sliding groove is provided at the bottom end of the second guide rail slider. The top end of the first trolley guide rail can be embedded in the first sliding groove, and the top end of the second trolley guide rail can be embedded in the second sliding groove. The first guide rail slider can slide back and forth on the first trolley guide rail along the extension direction of the first trolley guide rail, and the second guide rail slider can slide back and forth on the second trolley guide rail along the extension direction of the second trolley guide rail.

[0052] Furthermore, a first screw hole is provided on the screw moving block of the first guide device, an outer circumference of the first screw portion of the screw of the first guide device is provided with an external thread, and the first screw hole is provided with an internal thread, and the internal thread of the first screw hole is adapted to the external thread of the screw of the first guide device, thereby realizing screw connection;

[0053] The first guide rail slider and the second guide rail slider can be used to drive the trolley moving base plate to move forward and backward. During use, the first guide device screw rod is driven to rotate by rotating the first hand wheel. The first guide device screw rod is connected to the first screw rod part and the first screw rod hole through a threaded connection. The first guide device screw rod moving block can move forward and backward along the first guide device screw rod, and drive the trolley moving base plate to move forward and backward along the extension direction of the first trolley guide rail and the second trolley guide rail.

[0054] Furthermore, the top end of the positioning shaft extends upward in the vertical direction, and the top end of the positioning shaft is higher than the movable bottom plate of the trolley and is consistent with the height of the grinding wheel.

[0055] Furthermore, the measuring device support platform is arranged on the right side of the second trolley guide rail and the trolley moving bottom plate.

[0056] Furthermore, the left and right positions of the fourth guide device screw fixing seat correspond to those of the third guide device screw fixing seat.

[0057] Furthermore, the third guide device screw fixing seat is provided with a third rotating hole, the fourth guide device screw fixing seat is provided with a fourth rotating hole, the third rotating part passes through the third rotating hole from the rear end of the third rotating hole, and the fourth rotating part passes through the fourth rotating hole from the front end of the fourth rotating hole; and the third rotating part can rotate in the third rotating hole, and the fourth rotating part can rotate in the fourth rotating hole.

[0058] Further preferably, a rotating bearing is provided in each of the third rotating hole and the fourth rotating hole, which can reduce the friction during the rotation of the screw rod of the second guide device and improve the rotation efficiency.

[0059] Furthermore, the diameters of the third rotating part and the fourth rotating part are the same, and the diameter of the second screw rod part is larger than the diameters of the third rotating part and the fourth rotating part; by setting the diameters of the third rotating part, the fourth rotating part and the second screw rod part, the second screw rod part can be clamped between the third guide device screw rod fixing seat and the fourth guide device screw rod fixing seat.

[0060] Furthermore, the front end of the third rotating part extends forwardly out of the third rotating hole.

[0061] Furthermore, a second screw hole is provided on the screw moving block of the second guide device, an outer circumference of the second screw portion of the screw of the second guide device is provided with an external thread, and the second screw hole is provided with an internal thread, and the internal thread of the second screw hole is adapted to the external thread of the screw of the second guide device, thereby realizing screw connection;

[0062] The second guide device screw is driven to rotate by rotating the second hand wheel, and the second guide device screw portion and the second screw hole are threadedly connected to enable the second guide device screw moving block to move forward and backward along the extension direction of the second guide device screw.

[0063] Furthermore, the measuring connecting rod extends to the left, the tip of the measuring head is arranged backward, and the center position of the measuring head coincides with the center line of the axis of the movable bottom plate of the trolley or the grinding wheel in the front-rear direction.

[0064] Furthermore, the displacement sensing mechanism is located on the right side of the second guiding mechanism.

[0065] Furthermore, the left and right position of the sixth guide rod fixing seat corresponds to the fifth guide rod fixing seat.

[0066] Furthermore, the fifth guide rod fixing seat is provided with a fifth through hole, the sixth guide rod fixing seat is provided with a sixth through hole, the fifth rod body passes through the fifth through hole from the rear end of the fifth through hole, and the sixth guide rod passes through the sixth through hole from the front end of the sixth through hole.

[0067] Furthermore, the diameters of the fifth rod and the seventh rod are the same, and the diameter of the sixth rod is larger than that of the fifth rod and the seventh rod; by setting the diameters of the fifth rod, the seventh rod and the sixth rod, the sixth rod can be clamped between the fifth guide rod fixing seat and the sixth guide rod fixing seat.

[0068] Further preferably, the front-to-rear position of the fifth guide rod fixing seat corresponds to the front-to-rear position of the third guide device screw fixing seat, and the front-to-rear position of the sixth guide rod fixing seat corresponds to the front-to-rear position of the fourth guide device screw fixing seat.

[0069] Furthermore, a light sensing through hole is provided on the grating sensor, and the grating ruler passes through the light sensing through hole, the left end of the grating sensor is fixedly connected to the third guide rod moving block, a light sensing contact is provided in the light sensing through hole, and a grating is provided on the grating ruler.

[0070] The beneficial effects of the utility model are:

[0071] The utility model can measure grinding wheels of various specifications by moving the trolley moving bottom plate, thereby increasing the measuring range and avoiding frequent replacement of vernier calipers of various specifications; accurate positioning of the grinding wheel is achieved through the first guide mechanism and the trolley moving mechanism, thereby improving the accuracy and stability of the grinding wheel measurement data.

[0072] The utility model can reduce the error of manual measurement. The surfaces of the probe, the symmetrical side plates used for positioning, the positioning shaft and other components are treated with hard alloy to reduce wear. It is not necessary to have a standard sample block for "zero calibration" for each specification of product. The "zero calibration" can be carried out anytime and anywhere through the "zero position" of the positioning shaft, and the utility model has strong versatility.

[0073] When measuring, the utility model takes the position of the second guide device screw moving block, the third guide rod moving block, and the grating sensor at the front end as the "zero point". The calibration of the grating sensor and the probe is based on this "zero point". The second guide device screw moves backward and the displacement sensor mechanism moves backward, driving the probe and the grating sensor to move backward. By measuring the distance swept by the grating sensor during the backward movement of the starting end of the front end of the grating ruler, the distance swept by the grating sensor is subtracted from the total front and rear length of the grating ruler, so that the diameter of the grinding wheel can be accurately calculated. By replacing the vernier caliper with this measuring device, the measurement accuracy can be improved (eliminating the factor of human measurement error), and the measurement efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 is a stereoscopic diagram of the grinding wheel outer diameter measuring device described in Example 1;

[0075] Figure 2 It is a top view of the grinding wheel outer diameter measuring device described in Example 1. DETAILED DESCRIPTION

[0076] In order to make the technical means, technical features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0077] In the description of the present utility model, it should be noted that the same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0078] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense; for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0079] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is 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 utility model. However, the utility model can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0080] Example 1

[0081] like Figure 1-2 As shown, a grinding wheel outer diameter measuring device, specifically a large diameter grinding wheel outer diameter measuring device, includes a fixed base plate 1, and a first guide mechanism, a trolley moving mechanism and an outer diameter measuring mechanism arranged at the top of the fixed base plate 1;

[0082] The first guide mechanism includes a first trolley guide rail 21, a second trolley guide rail 22, a first guide device screw 23, a first guide device screw fixing seat 24, a second guide device screw fixing seat (not shown in the figure) and a positioning shaft support seat 26;

[0083] The first trolley guide rail 21, the second trolley guide rail 22, and the first guide device screw rod 23 all extend forward and backward in the horizontal direction;

[0084] The first guide screw fixing seat 24 is arranged at the front side of the top of the fixed base plate 1, and the second guide screw fixing seat is arranged at the rear side of the top of the fixed base plate 1, and the left and right positions of the second guide screw fixing seat correspond to the first guide screw fixing seat 24;

[0085] The first trolley guide rail 21 is installed on the top of the fixed base plate 1, the left side of the first guide device screw fixing seat 24 and the second guide device screw fixing seat, and the second trolley guide rail 22 is located on the top of the fixed base plate 1, the right side of the first guide device screw fixing seat 24 and the second guide device screw fixing seat;

[0086] Specifically, the first trolley guide rail 21, the second trolley guide rail 22 and the fixed base plate 1 are all provided with threaded holes, and the first trolley guide rail 21 and the second trolley guide rail 22 can be installed on the top of the fixed base plate 1 by bolt connection;

[0087] The positioning shaft support seat 26 is arranged at the rear side of the second guide device screw rod fixing seat, and a positioning shaft 261 extending upward in the vertical direction is provided at the top end of the positioning shaft support seat 26 .

[0088] The first guide device screw rod 23 includes a first rotating part, a first screw rod part and a second rotating part from front to back;

[0089] The first guide device screw fixing seat 24 is provided with a first rotating hole, and the second guide device screw fixing seat is provided with a second rotating hole. The first rotating part passes through the first rotating hole from the rear end of the first rotating hole, and the second rotating part passes through the second rotating hole from the front end of the second rotating hole; and the first rotating part can rotate in the first rotating hole, and the second rotating part can rotate in the second rotating hole;

[0090] Further preferably, a rotation bearing is provided in each of the first rotation hole and the second rotation hole, which can reduce the rotation friction during the rotation of the first guide device screw rod 23 and improve the rotation efficiency;

[0091] Furthermore, the diameters of the first rotating part and the second rotating part are the same, and the diameter of the first screw part is larger than the diameters of the first rotating part and the second rotating part; by setting the diameters of the first rotating part, the second rotating part and the first screw part, the first screw part can be stuck between the first guide device screw fixing seat 24 and the second guide device screw fixing seat;

[0092] Furthermore, the front end of the first rotating part extends forwardly out of the first rotating hole, and a first hand wheel 231 is also provided at the front end of the first rotating part.

[0093] The trolley moving mechanism includes a trolley moving base plate 3, a first guide rail slider 31, a second guide rail slider (not marked in the figure) and a first guide device screw moving block (not marked in the figure);

[0094] The top of the trolley moving base plate 3 is provided with a first side plate 34 and a second side plate 35 for defining the installation position of the grinding wheel 7. The first side plate 34 is located at the left front side of the top of the trolley moving base plate 3, and the second side plate 35 is located at the right front side of the top of the trolley moving base plate 3.

[0095] The first side plate 34 and the second side plate 35 are both vertically arranged, and the left end of the first side plate 34 is tilted backwards, and the right end of the second side plate 35 is tilted backwards, and together with the trolley movable bottom plate 3, they enclose a mounting position for the grinding wheel 7;

[0096] Specifically, the left end of the first side plate 34 is inclined at an angle of 45°, and the right end of the second side plate 35 is inclined at an angle of 45°.

[0097] The first guide rail slider 31 is arranged on the left side of the bottom end of the trolley moving base plate 3, and the second guide rail slider is arranged on the right side of the bottom end of the trolley moving base plate 3;

[0098] Furthermore, in this embodiment, the first guide rail slider 31 and the second guide rail slider are both detachably connected to the trolley moving base plate 3, specifically bolted; the specific bolt connection method is that the first guide rail slider 31, the second guide rail slider and the trolley moving base plate 3 are all provided with threaded holes, and the first guide rail slider 31 and the second guide rail slider are installed at the bottom end of the trolley moving base plate 3 by bolt connection;

[0099] A first sliding groove is provided at the bottom end of the first guide rail slider 31, and a second sliding groove is provided at the bottom end of the second guide rail slider. The top end of the first trolley guide rail 21 can be embedded in the first sliding groove, and the top end of the second trolley guide rail 22 can be embedded in the second sliding groove. The first guide rail slider 31 can slide back and forth on the first trolley guide rail 21 along the extension direction of the first trolley guide rail 21, and the second guide rail slider can slide back and forth on the second trolley guide rail 22 along the extension direction of the second trolley guide rail 22.

[0100] The first guide device screw rod moving block is arranged in the middle of the bottom end of the trolley moving base plate 3, and the first guide device screw rod moving block is screw-connected with the first guide device screw rod 23;

[0101] Specifically, a first screw hole is provided on the screw moving block of the first guide device, an outer circumference of the first screw portion of the first guide device screw 23 is provided with an external thread, and the first screw hole is provided with an internal thread, and the internal thread of the first screw hole is adapted to the external thread of the first guide device screw 23, thereby realizing screw connection;

[0102] The first guide rail slider 31 and the second guide rail slider can slide forward and backward to drive the trolley moving base plate 3 to move forward and backward. During use, the first hand wheel 231 is rotated to drive the first guide device screw rod 23 to rotate. The first screw rod portion and the first screw rod hole are threadedly connected to enable the first guide device screw rod moving block to move forward and backward along the first guide device screw rod 23, and drive the trolley moving base plate 3 to move forward and backward along the extension direction of the first trolley guide rail 21 and the second trolley guide rail 22.

[0103] The top end of the positioning shaft 261 extends upward in the vertical direction, and the top end of the positioning shaft 261 is higher than the moving bottom plate 3 of the trolley and is consistent with the height of the grinding wheel 7;

[0104] When in use, place the grinding wheel 7 on the top of the trolley movable base plate 3, and place the left front end of the grinding wheel 7 close to the first side plate 34, and the right front end close to the second side plate 35, rotate the first hand wheel 231 to drive the first guide device screw 23 to rotate, so that the first guide device screw moving block moves backward along the first guide device screw 23, and drives the trolley movable base plate 3 to move backward along the extension direction of the first trolley guide rail 21 and the second trolley guide rail 22, until the grinding wheel 7 is close to the positioning shaft 261, stop rotating the first hand wheel 231, at this time the grinding wheel 7 and the trolley movable base plate 3 have been positioned.

[0105] The outer diameter measuring mechanism includes a measuring device support platform 5 and a second guide mechanism and a displacement sensing mechanism arranged on the top of the measuring device support platform 5;

[0106] The measuring device support platform 5 is arranged on the right side of the second trolley guide rail 22 and the trolley moving bottom plate 3;

[0107] The second guide mechanism includes a second guide device screw 41, a third guide device screw fixing seat 42, a fourth guide device screw fixing seat 43 and a second guide device screw moving block 44;

[0108] The third guide device screw fixing seat 42 is arranged at the front side of the top end of the measuring device support platform 5, and the fourth guide device screw fixing seat 43 is arranged at the rear side of the top end of the measuring device support platform 5, and the left and right positions of the fourth guide device screw fixing seat 43 correspond to those of the third guide device screw fixing seat 42.

[0109] The second guide device screw rod 41 includes a third rotating part, a second screw rod part and a fourth rotating part from front to back;

[0110] The third guide device screw fixing seat 42 is provided with a third rotating hole, and the fourth guide device screw fixing seat 43 is provided with a fourth rotating hole. The third rotating part passes through the third rotating hole from the rear end of the third rotating hole, and the fourth rotating part passes through the fourth rotating hole from the front end of the fourth rotating hole; and the third rotating part can rotate in the third rotating hole, and the fourth rotating part can rotate in the fourth rotating hole.

[0111] Further preferably, a rotating bearing is provided in each of the third rotating hole and the fourth rotating hole, so as to reduce the friction during the rotation of the second guide device screw rod 41 and improve the rotation efficiency;

[0112] Furthermore, the diameters of the third rotating part and the fourth rotating part are the same, and the diameter of the second screw part is larger than the diameters of the third rotating part and the fourth rotating part; by setting the diameters of the third rotating part, the fourth rotating part and the second screw part, the second screw part can be stuck between the third guide device screw fixing seat 42 and the fourth guide device screw fixing seat 43;

[0113] Furthermore, the front end of the third rotating part extends forwardly out of the third rotating hole, and a second hand wheel 411 is also provided at the front end of the third rotating part.

[0114] The second guide device screw rod moving block 44 is screw-connected with the second guide device screw rod 41;

[0115] Specifically, a second screw hole is provided on the second guide screw moving block 44, an outer circumference of the second screw portion of the second guide screw 41 is provided with an external thread, and the second screw hole is provided with an internal thread, and the internal thread of the second screw hole is adapted to the external thread of the second guide screw 41, thereby realizing screw connection;

[0116] The second guide screw 41 is driven to rotate by rotating the second hand wheel 411, and the second guide screw portion and the second screw hole are threadedly connected to enable the second guide screw moving block 44 to move forward and backward along the extension direction of the second guide screw 41;

[0117] A first connecting block 45 is provided at the top of the second guide device screw moving block 44, and a measuring connecting rod 46 is installed on the left side of the first connecting block 45. The measuring connecting rod 46 extends to the left, and a probe 461 is provided at the left end of the measuring connecting rod 46. The tip of the probe 461 is set backward, and the center position of the probe 461 coincides with the center line of the axis of the trolley moving base plate 3 or the grinding wheel 7 in the front-rear direction.

[0118] The displacement sensing mechanism is located on the right side of the second guiding mechanism;

[0119] The displacement sensing mechanism includes a third guide rod 61, a fifth guide rod fixing seat 62, a sixth guide rod fixing seat 63 and a third guide rod moving block 64;

[0120] The sixth guide rod fixing seat 63 is disposed at the rear side of the fifth guide rod fixing seat 62, and the left and right positions of the sixth guide rod fixing seat 63 correspond to those of the fifth guide rod fixing seat 62;

[0121] The third guide rod 61 includes a fifth rod body, a sixth rod body and a seventh rod body in sequence from front to back;

[0122] The fifth guide rod fixing seat 62 is provided with a fifth through hole, the sixth guide rod fixing seat 63 is provided with a sixth through hole, the fifth rod body passes through the fifth through hole from the rear end thereof, and the sixth guide rod passes through the sixth through hole from the front end thereof;

[0123] Furthermore, the diameters of the fifth rod and the seventh rod are the same, and the diameter of the sixth rod is larger than the diameters of the fifth rod and the seventh rod; by setting the diameters of the fifth rod, the seventh rod and the sixth rod, the sixth rod can be clamped between the fifth guide rod fixing seat 62 and the sixth guide rod fixing seat 63;

[0124] The third guide rod moving block 64 is provided with a sliding hole, and the third guide rod moving block 64 is passed through the sliding hole and is arranged outside the sixth rod body, and the third guide rod moving block 64 can slide forward and backward on the sixth rod body along the extension direction of the sixth rod body;

[0125] Further preferably, the front-to-rear position of the fifth guide rod fixing seat 62 corresponds to the front-to-rear position of the third guide device screw fixing seat 62, and the front-to-rear position of the sixth guide rod fixing seat 63 corresponds to the front-to-rear position of the fourth guide device screw fixing seat 63;

[0126] A second connecting block 69 is also provided at the left end of the third guide rod moving block 64 , and the left end of the second connecting block 69 is connected to the second guide device screw rod moving block 44 .

[0127] The displacement sensing mechanism further includes a grating sensor 65, a grating ruler 66, a first fixing clip 67, and a second fixing clip 68;

[0128] The grating ruler 66 extends forward and backward in the horizontal direction, and the front end of the grating ruler 66 is installed on the right side of the fifth guide rod fixing seat 62 through a first fixing clip 67, and the rear end of the grating ruler 66 is installed on the right side of the sixth guide rod fixing seat 63 through a second fixing clip 68;

[0129] The grating sensor 65 is provided with a light sensing through hole, and the grating ruler 66 passes through the light sensing through hole. The left end of the grating sensor 65 is fixedly connected to the third guide rod moving block 64. A light sensing contact is provided in the light sensing through hole, and a grating is provided on the grating ruler 66.

[0130] By passing the grating ruler 66 through the light-sensing through hole and the grating sensor 65 moving along the extension direction of the grating ruler 66, the grating sensor 65 can calculate the moving distance. Specifically, the structure and measurement principle of the grating sensor 65 and the grating ruler 66 can adopt conventional means in the field, and are not the inventive point of the utility model, so they are not described in detail.

[0131] Furthermore, the utility model adjusts the installation positions of the fourth guide device screw fixing seat 43 and the sixth guide rod fixing seat 63 on the measuring device support 5 so that the distance from the rear end of the grating scale 66 to the front end of the fixed base plate 1 is consistent with the distance from the positioning shaft 261 to the front end of the fixed base plate 1.

[0132] When in use, the second guide device screw 41 is driven to rotate by rotating the second hand wheel 411, and the second guide device screw rod moving block 44 can be moved backward along the extension direction of the second guide device screw rod 41 through the threaded connection between the second screw rod portion and the second screw rod hole;

[0133] Then, the first connecting block 45, the measuring connecting rod 46, and the measuring head 461 are driven to move backward and move to the position where the measuring head 461 contacts the grinding wheel 7. At the same time, the third guide rod moving block 64 and the grating sensor 65 are driven to move backward, and the light sensing through hole of the grating scale 66 is scanned on the grating scale 66, and the distance swept by the grating sensor 65 on the grating scale 66 from the front end (i.e., the position close to the first fixing clip 67) to the moment when the measuring head 461 contacts the grinding wheel 7 is recorded and accurately measured. Then, the distance swept by the grating sensor 65 is subtracted from the total front and rear length of the grating scale 66, so as to calculate the diameter of the grinding wheel 7, thereby being able to accurately measure the outer diameter of the grinding wheel 7.

[0134] The operating principle of the utility model is:

[0135] Before use, the first hand wheel 231 is rotated to drive the first guide device screw 23 to rotate, so that the first guide device screw moving block moves forward along the first guide device screw 23, and drives the trolley moving base plate 3 to move forward along the extension direction of the first trolley guide rail 21 and the second trolley guide rail 22, so that the top end of the trolley moving base plate 3 and the rear sides of the first side plate 34 and the second side plate 35 form a mounting position for positioning the grinding wheel 7;

[0136] At the same time, by rotating the second hand wheel 411 to drive the second guide device screw 41 to rotate, through the threaded connection between the second screw part and the second screw hole, the second guide device screw moving block 44 can move forward along the extension direction of the second guide device screw 41, and through the second connecting block 69, the third guide rod moving block 64 can move forward along the extension direction of the third guide rod 61 until the grating sensor 65 moves to the leftmost position on the grating scale 66.

[0137] When in use, the grinding wheel 7 is placed on the top of the trolley movable base plate 3, and the left front end of the grinding wheel 7 is close to the first side plate 34, and the right front end is close to the second side plate 35, and the first hand wheel 231 is rotated to drive the first guide device screw 23 to rotate, so that the first guide device screw moving block moves backward along the first guide device screw 23, and drives the trolley movable base plate 3 to move backward along the extension direction of the first trolley guide rail 21 and the second trolley guide rail 22, until the grinding wheel 7 is close to the positioning shaft 261, and the first hand wheel 231 is stopped from rotating. At this time, the grinding wheel 7 and the trolley movable base plate 3 have been positioned;

[0138] Then, the second guide device screw 41 is driven to rotate by rotating the second hand wheel 411, and the second guide device screw 41 is threadedly connected with the second screw portion and the second screw hole, so that the second guide device screw moving block 44 can move backward along the extension direction of the second guide device screw 41;

[0139] Then it drives the first connecting block 45, the measuring connecting rod 46, and the probe 461 to move backward and move to the position where the probe 461 contacts the grinding wheel 7. At the same time, it can drive the third guide rod moving block 64 and the grating sensor 65 to move backward, and scan the grating ruler 66 through the light sensing through hole of the grating ruler 66, and record the distance swept by the grating sensor 65 on the grating ruler 66 from the front end (i.e., the position close to 67) to the moment when the probe 461 contacts the grinding wheel 7, and then subtract the distance swept by the grating sensor 65 from the total front and rear length of the grating ruler 66, so as to accurately calculate the diameter of the grinding wheel 7.

[0140] Further preferably, in the present invention, a dashboard is also provided on the grating ruler 66, and the measured value can be directly displayed, which greatly improves the efficiency of the outer diameter detection of the grinding wheel 7.

[0141] When the utility model is used, the processed grinding wheel 7 can be directly placed on the top of the movable bottom plate 3 of the trolley.

[0142] In the present invention, the first trolley guide rail 21 and the second trolley guide rail 22 can adopt high-precision sliding shoe guideways.

[0143] The first side plate 34 and the second side plate 35 are symmetrically arranged relative to the axial center line of the trolley movable base plate 3 in the front-to-back direction, so as to ensure that when the grinding wheel 7 is placed, the center line of the grinding wheel 7 is on the axial center line of the trolley movable base plate 3 in the front-to-back direction; by abutting the grinding wheel 7 against the front end of the positioning shaft 261, the positioning of the grinding wheel 7 can be achieved.

[0144] In the present invention, when the probe 461 moves forward and backward, the grating sensor 65 can also move forward and backward synchronously with the probe 461 , and the forward and backward moving distance of the probe 461 can be directly reflected in time through the grating sensor 65 .

[0145] The probe 461 is located on the axial center line of the trolley movable base plate 3 and the grinding wheel 7 in the front-to-back direction. The first guide device screw 23 rotates to drive the first guide device screw moving block and the trolley movable base plate 3 to move forward and backward, and can keep the probe 461 always located on the axial center line of the grinding wheel 7 in the front-to-back direction, thereby ensuring the accuracy of the measurement.

[0146] In the utility model, the grinding wheel 7 is positioned by a three-point circle positioning method (two points of which are symmetrical about the axial center line of the grinding wheel 7 in the front-rear direction, two points of which are the contact points between the first side plate 34 and the second side plate 35 and the grinding wheel 7, and the other point is the contact point between the grinding wheel 7 and the positioning shaft 261), and the positions where the grinding wheel 7 is positioned with the first side plate 34, the second side plate 35, and the positioning shaft 261 are used as fixed points.

[0147] During measurement, the frontmost position of the second guide device lead screw moving block 44, the third guide rod moving block 64, and the grating sensor 65 is taken as the "zero point". The calibration of the grating sensor 65 and the probe 461 is based on this "zero point". The second guide device lead screw 41 moves backward and the displacement sensing mechanism moves backward, driving the probe 461 and the grating sensor 65 to move backward. By measuring the distance swept by the grating sensor 65 during the backward movement of the starting end of the front end of the grating ruler 66, the distance swept by the grating sensor 65 is subtracted from the total front and rear length of the grating ruler 66, the diameter of the grinding wheel 7 is calculated, and the outer diameter of the grinding wheel is measured.

[0148] The utility model realizes accurate positioning of the grinding wheel 7 through the first guide mechanism and the trolley moving mechanism, so that the grinding wheel 7 will not move after the "three-point positioning", creating stable conditions for subsequent measurement.

[0149] Further preferably, the probe 461 is a wear-resistant alloy probe. The utility model can also install the measuring connecting rod 46 and the first connecting block 45 by means of a rotational connection. When the probe 461 is not in use, it can be folded up by rotating the measuring connecting rod 46 upward and put down again for the next measurement.

[0150] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A grinding wheel outer diameter measuring device, characterized in that: It includes a fixed bottom plate, and a first guide mechanism, a trolley moving mechanism and an outer diameter measuring mechanism arranged on the top of the fixed bottom plate; The first guide mechanism includes a first trolley guide rail, a second trolley guide rail, a first guide device screw, a first guide device screw fixing seat, a second guide device screw fixing seat and a positioning shaft support seat; The first guide device screw rod fixing seat is arranged at the front side of the top end of the fixed bottom plate, and the second guide device screw rod fixing seat is arranged at the rear side of the top end of the fixed bottom plate; The first trolley guide rail is installed on the top of the fixed base plate, the left side of the first guide device screw fixing seat and the second guide device screw fixing seat, and the second trolley guide rail is located on the top of the fixed base plate, the right side of the first guide device screw fixing seat and the second guide device screw fixing seat; The positioning shaft support seat is arranged at the rear side of the screw rod fixing seat of the second guide device, and a positioning shaft extending upward in the vertical direction is arranged at the top end of the positioning shaft support seat; The first guide device screw rod includes a first rotating part, a first screw rod part and a second rotating part from front to back; The first rotating part of the first guide device screw can be rotatably connected to the first guide device screw fixing seat, and the second rotating part of the first guide device screw can be rotatably connected to the second guide device screw fixing seat; A first hand wheel is also provided at the front end of the first rotating part; The trolley moving mechanism comprises a trolley moving bottom plate, a first guide rail slider, a second guide rail slider and a first guide device screw moving block; A limiting structure for limiting the installation position of the grinding wheel is provided at the top of the movable bottom plate of the trolley; The first guide rail slider is arranged on the left side of the bottom end of the trolley moving base plate, and the second guide rail slider is arranged on the right side of the bottom end of the trolley moving base plate; The first guide rail slider is slidably connected to the first trolley guide rail, and the second guide rail slider is slidably connected to the second trolley guide rail, so that the trolley movable bottom plate can be moved forward and backward; The first guide device screw rod moving block is arranged in the middle of the bottom end of the trolley moving bottom plate, and the first guide device screw rod moving block is connected to the first guide device screw rod; By rotating the first guide device screw, the first guide device screw moving block can be moved forward and backward along the first guide device screw, and the trolley moving bottom plate is driven to move forward and backward along the extension direction of the first trolley guide rail and the second trolley guide rail; The outer diameter measuring mechanism includes a measuring device support platform, a second guiding mechanism and a displacement sensing mechanism arranged on the top of the measuring device support platform; The second guide mechanism includes a second guide device screw, a third guide device screw fixing seat, a fourth guide device screw fixing seat, and a second guide device screw moving block; The third guide device screw rod fixing seat is arranged at the front side of the top end of the measuring device support platform, and the fourth guide device screw rod fixing seat is arranged at the rear side of the top end of the measuring device support platform; The second guide device screw rod includes a third rotating part, a second screw rod part and a fourth rotating part from front to back; The third rotating portion of the second guide device screw can be rotatably connected to the third guide device screw fixing seat, and the fourth rotating portion of the second guide device screw can be rotatably connected to the fourth guide device screw fixing seat; A second hand wheel is also provided at the front end of the third rotating part; The second guide device lead screw moving block is connected to the second guide device lead screw; By rotating the second guide device screw, the second guide device screw moving block can be moved forward and backward along the extension direction of the second guide device screw; A first connecting block is provided at the top of the screw moving block of the second guide device, a measuring connecting rod is installed on the left side of the first connecting block, and a measuring head is provided at the left end of the measuring connecting rod; The displacement sensing mechanism comprises a third guide rod, a fifth guide rod fixing seat, a sixth guide rod fixing seat and a third guide rod moving block; The sixth guide rod fixing seat is arranged at the rear side of the fifth guide rod fixing seat; The third guide rod includes a fifth rod body, a sixth rod body and a seventh rod body from front to back; The fifth rod body is rotatably connected to the fifth guide rod fixing seat, and the seventh rod body is rotatably connected to the sixth guide rod fixing seat; The third guide rod moving block is provided with a sliding hole, the third guide rod moving block is passed through the sliding hole and is arranged outside the sixth rod body, and the third guide rod moving block can slide forward and backward on the sixth rod body along the extension direction of the sixth rod body; A second connecting block is also provided at the left end of the third guide rod moving block, and the left end of the second connecting block is connected to the second guide device screw rod moving block; The displacement sensing mechanism also includes a grating sensor, a grating ruler, a first fixing clip, and a second fixing clip; The grating ruler extends forward and backward in the horizontal direction, and the front end of the grating ruler is installed on the right side of the fifth guide rod fixing seat through the first fixing clip, and the rear end of the grating ruler is installed on the right side of the sixth guide rod fixing seat through the second fixing clip; The grating sensor moves on the grating scale and measures the moving distance, and the diameter of the grinding wheel can be measured through conversion.

2. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The first guide device screw fixing seat is provided with a first rotating hole, and the second guide device screw fixing seat is provided with a second rotating hole. The first rotating part passes through the first rotating hole from the rear end of the first rotating hole, and the second rotating part passes through the second rotating hole from the front end of the second rotating hole; and the first rotating part can rotate in the first rotating hole, and the second rotating part can rotate in the second rotating hole.

3. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The diameters of the first rotating part and the second rotating part are the same, and the diameter of the first screw rod part is larger than the diameters of the first rotating part and the second rotating part.

4. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The limiting structure includes a first side plate and a second side plate arranged at the top of the moving bottom plate of the trolley, the first side plate is located at the left front side of the top of the moving bottom plate of the trolley, and the second side plate is located at the right front side of the top of the moving bottom plate of the trolley; The first side plate and the second side plate are both vertically arranged, and the left end of the first side plate is tilted backwards, and the right end of the second side plate is tilted backwards, and together with the movable bottom plate of the trolley, they enclose a mounting position for the grinding wheel.

5. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The third guide device screw fixing seat is provided with a third rotating hole, the fourth guide device screw fixing seat is provided with a fourth rotating hole, the third rotating part passes through the third rotating hole from the rear end of the third rotating hole, and the fourth rotating part passes through the fourth rotating hole from the front end of the fourth rotating hole; and the third rotating part can rotate in the third rotating hole, and the fourth rotating part can rotate in the fourth rotating hole.

6. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The diameters of the third rotating part and the fourth rotating part are the same, and the diameter of the second screw rod part is larger than the diameters of the third rotating part and the fourth rotating part.

7. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The measuring rod extends to the left and the tip of the measuring probe is set backwards.

8. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The fifth guide rod fixing seat is provided with a fifth through hole, the sixth guide rod fixing seat is provided with a sixth through hole, the fifth rod body passes through the fifth through hole from the rear end thereof, and the sixth guide rod passes through the sixth through hole from the front end thereof.

9. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The diameters of the fifth rod body and the seventh rod body are the same, and the diameter of the sixth rod body is larger than the diameters of the fifth rod body and the seventh rod body.

10. The grinding wheel outer diameter measuring device according to claim 1, characterized in that: The grating sensor is provided with a light sensing through hole, and the grating ruler passes through the light sensing through hole. The left end of the grating sensor is fixedly connected to the third guide rod moving block. A light sensing contact is provided in the light sensing through hole, and a grating is provided on the grating ruler.

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