Novel crescent groove depth measuring device and method

Abstract

The invention relates to the technical field of depth measurement, and discloses a novel crescent groove depth measurement device and method, and the device consists of a parallel vertical mechanism and an automatic centering measurement mechanism. The parallel vertical mechanism comprises a parallel vertical seat, two edges of the bottom of the parallel vertical seat are parallel and aligned with each other and are completely attached to the cylindrical surface of the roller body of the roller ring, and a hollow sliding block is slidably mounted in the parallel vertical seat; the automatic centering measuring mechanism comprises a dial indicator, the dial indicator is fixedly installed at the top end of a hollow sliding block, a hollow centering head is detachably installed at the bottom end of the hollow sliding block through precise butt joint, the bottom face of the hollow centering head is in an arc shape, and the hollow centering head is attached to the two sides of a roll collar groove hole at the same time during measurement. The center of the groove hole is aligned by using the hollow centering block, so that the measuring pin of the dial indicator vertically points to the lowest point of the crescent groove while being vertical to the axis of the roll collar, and the depth of the crescent groove is accurately measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of depth measurement, in particular to a new type of crescent groove depth measuring device and method. BACKGROUND

[0002] In order to improve the measurement accuracy of the finished product frame roll and the roll ring crescent groove depth, a device specially used for measuring the crescent groove depth is needed. Through retrieval, one invention patent and three utility model patents related to it are found. From the mechanical structure, they are all simply equipped with a dial indicator on a V-shaped seat to measure the crescent groove depth. As shown in: Figure 1 (A) Application publication number CN10344781A; (B) Application publication number CN102749016; (C) Application publication number 212432700U; (D) Application publication number CN221425577U.

[0003] Here, two concepts are introduced, as shown in: Figure 2 1. Left in the figure, groove depth: the vertical distance between the bottom of the roll ring groove and the original unslotted reference surface of the roll or roll ring (the original cylindrical surface before machining), which needs to be measured vertically along the axis of the roll ring.

[0004] 2. Right in the figure, crescent groove depth: the vertical distance between the bottom of the roll ring groove and the bottom of the crescent groove, which needs to be measured vertically along the axis of the roll ring.

[0005] The above prior art needs to ensure that the measuring device is kept horizontal with the axis of the roll ring, and then the measuring device is moved horizontally to find the lowest point of the groove and the crescent groove, in order to accurately measure the groove or crescent groove depth, because if it is not moved, it cannot be determined whether the dial indicator needle is pointing to the lowest point of the groove or the crescent groove.

[0006] Among them, the invention patent with the application publication number CN10344781A. The description in the specific embodiment

[0014] of this patent is: when measuring with this device, first place it on the outer circular arc surface, make the high-strength wear-resistant measuring head contact with the lowest point of the circular arc groove under a certain pressure, rotate the dial indicator dial, and make the large and small pointers of the dial indicator both point to the "0" mark; then move the device, make the high-strength wear-resistant measuring head contact with the bottom of the crescent groove, move it gently, and observe the rotation of the dial indicator needle at the same time. When the large pointer of the dial indicator rotates the maximum amplitude, the small pointer rotates the millimeter number plus the scale number multiplied by 0.01mm is the crescent groove depth value.

[0007] However, in the actual measurement process, the following problems exist: ​1. When measuring the depth of the slot, gently moving the measuring device will likely disrupt the parallelism between the measuring device and the roller ring axis. If the parallelism between the measuring device and the roller ring axis is disrupted during movement, it will cause a measurement error of at least 0.05 to 0.2 mm. The operator needs to take repeated measurements to ensure measurement accuracy.

[0008] 2. When measuring the depth of the crescent-shaped sulcus, because the crescent-shaped sulcus is arranged at an angle of 30 to 60 degrees in the middle of the slot (e.g., Figure 2 As shown), the width of the bottom of the crescent groove is generally between 0.4 and 2 mm depending on the specifications of the groove. When moving the measuring device to find the lowest point of the crescent groove, it is necessary to ensure that the measuring device is parallel to the axis of the roller ring and slide along the bottom of the crescent groove which is very narrow and angled. This is extremely difficult. The dial indicator probe will most likely hit the sides of the crescent groove. If it does, it will cause a measurement error of at least 0.1 to 0.25 mm.

[0009] 3. When measuring the depth of the crescent sulcus, which has a bottom width of only 0.4 to 1.5 mm, the bottom width is too small, and the measuring device and the side wall of the crescent sulcus will block the view. The bottom of the crescent sulcus cannot be seen at all during the measurement process, which makes it impossible to move the measuring device to find the lowest point of the crescent sulcus.

[0010] 4. The diameter of the probe tip of the dial indicator used to measure the depth of the lunula is only 0.2 mm. When moving the measuring device to find the lowest point of the lunula, the probe is easily bent due to the interaction between the probe and the bottom of the lunula. If the dial indicator probe bends during the measurement process, it will cause a measurement error of at least 0.05 to 0.2 mm.

[0011] 5. When moving the measuring device to find the lowest point of the slot or crescent groove, the bottom of the measuring device will rub against the roller ring, causing wear on the bottom of the measuring device and affecting the measurement accuracy.

[0012] In summary, current lunula depth measuring devices cannot meet our requirements for accuracy. Therefore, we need to develop a new type of measuring device and method that allows the dial indicator probe to find the lowest point of the lunula without moving, and can accurately and conveniently measure the lunula depth. Summary of the Invention

[0013] To address the shortcomings of existing technologies, this invention provides a novel device and method for measuring the lunula depth, which has the advantage of accurately measuring the lunula depth without having to move the measuring device to find the lowest point of the lunula, thus solving the aforementioned technical problems.

[0014] To achieve the above object, the application provides the following technical scheme: a novel crescent groove depth measuring device is composed of a parallel vertical mechanism and an automatic centering measuring mechanism, the parallel vertical mechanism is in complete contact with the roll body of a roll ring to be measured at the same time, and then the device is kept parallel with the roll ring axis, and the automatic centering measuring mechanism is vertically up and down sliding in the parallel vertical mechanism and is used for measuring the crescent groove depth; The parallel vertical mechanism comprises a parallel vertical seat, two edges of the bottom of the parallel vertical seat are aligned in parallel with each other and are completely attached to the cylindrical surface of the roll ring, and a hollow sliding block is slidingly installed in the inside of the parallel vertical seat; The automatic centering measuring mechanism comprises a dial gauge, the dial gauge is fixedly installed at the top end of the hollow sliding block, a hollow centering head is detachably installed at the bottom end of the hollow sliding block through precise butt joint, the hollow centering head is used for replacing the corresponding hollow centering head for measuring different sizes of groove holes, and the bottom surface of the hollow centering head is arc-shaped and is completely attached to the two edges of the roll ring groove hole during measurement.

[0015] As a preferred technical scheme of the application, two symmetrical ears are arranged on the middle outer wall of the hollow sliding block, installation holes are arranged through the parallel vertical seat from top to bottom, and the installation holes are precisely matched with the hollow sliding block.

[0016] As a preferred technical scheme of the application, threads are arranged on the two sides of the installation hole of the parallel vertical seat, plug screws are connected to the threads in the inside, the plug screws are used for plugging the hollow sliding block, springs are fixedly connected to the bottom end of the plug screws, and the springs are used for providing vertical downward pressure to the hollow sliding block.

[0017] As a preferred technical scheme of the application, the springs are located between the plug screws and the ears on the two sides of the hollow sliding block.

[0018] As a preferred technical scheme of the application, locking screws are threadedly connected to the front of the parallel vertical seat, the locking screws are perpendicular to the hollow sliding block, and the locking screws are used for locking the centering position of the hollow sliding block.

[0019] As a preferred technical scheme of the application, a through hole is arranged in the vertical center line position of the hollow centering head, and the through hole is used for accommodating the measuring needle of the dial gauge to pass out of the through hole.

[0020] As a preferred technical scheme of the application, a hole is arranged through the vertical center line of the hollow sliding block, the upper end of the hole is a round hole used for installing the dial gauge and is fixed by a stud, and the lower end of the hole is a square hole used for connecting the hollow centering head.

[0021] A novel crescent groove depth measuring method comprises the following steps: S1, the parallel vertical seat is placed on the roll body of a roll ring which has been completely processed, the two edges of the bottom of the parallel vertical seat are in complete contact with the roll body at the same time, the parallel vertical seat is kept parallel with the roll ring axis, and the vertical center line of the parallel vertical seat is kept vertical with the roll ring axis; S2, the hollow centering head, the dial gauge are installed through the hollow sliding block connection, so that it can vertically slide in the parallel vertical seat, and the vertical center line of the hollow centering head, the dial gauge and the hollow sliding block coincides with the vertical center line of the parallel vertical seat; S3, in the position without the crescent groove on the roll ring, the measuring needle of the dial gauge is aligned with the bottom center of the groove, the bottom two edges of the parallel vertical seat are adjusted to be in contact with the roll body at the same time, under the joint action of the gravity of the measuring device and the spring thrust, the hollow centering block is vertically pressed to the groove, when the two edges of the hollow centering block are in contact with the two edges of the groove at the same time, the device is automatically centered, the measuring needle of the dial gauge is vertically pointed to the lowest point of the groove and is perpendicular to the axis of the roll ring, then the hollow sliding block is locked, the dial gauge head is lifted and then gently put down to determine the measurement reference point, the dial gauge is set to zero, and the dial gauge small dial reading is remembered; S4, the device is lifted, the measuring needle of the dial gauge is aligned with the center of the crescent groove and put into the crescent groove, the bottom two edges of the parallel vertical seat are adjusted to be in contact with the roll body at the same time, the device is kept horizontal with the axis of the roll ring, at this time, the hollow centering block can be in contact with the two edges of the groove at the same time, the device is automatically centered, the measuring needle of the dial gauge is automatically vertically pointed to the lowest part of the crescent groove and is perpendicular to the axis of the roll ring, at this time, the dial gauge head is lifted and then gently put down, the dial gauge large dial value and the dial gauge small dial value are read out, the small dial value measured at this time is subtracted from the small dial value measured when the measurement reference point is determined, and then the large dial value measured at this time is added, so that the accurate depth of the crescent groove is obtained.

[0022] Compared with the prior art, the present application provides a novel crescent groove depth measuring device and method, which has the following beneficial effects: When measuring the groove depth, the hollow centering block is used to align the groove center, the dial gauge measuring needle can be vertically pointed to the lowest point of the crescent groove while being perpendicular to the roll ring axis without moving the measuring device, and the crescent groove depth can be accurately measured.

[0023] 1. The measurement error of 0.05 to 0.2 mm caused by gently moving the measuring device to destroy the parallelism between the measuring device and the roll ring axis is avoided, the measurement accuracy can be ensured without repeated measurement by the operator, and the measurement efficiency is improved by 3 times.

[0024] 2. The problem of 0.1 to 0.25 mm measurement error caused by moving the measuring device to find the lowest point of the crescent groove while ensuring that the measuring device is parallel to the roll ring axis and sliding along the crescent groove bottom with extremely small width and angle is avoided.

[0025] 3. Avoid the problem that when measuring the depth of the crescent groove with the bottom width of only 0.4 to 1.5mm, the bottom width is too small, and the measuring device and the side wall of the crescent groove will block the view, so that the bottom of the crescent groove cannot be seen during the measurement, and the operation of moving the measuring device to find the lowest point of the crescent groove cannot be realized.

[0026] 4. Avoid the problem that when moving the measuring device to find the lowest point of the crescent groove, the measuring needle is easily bent due to the interaction between the measuring needle and the bottom of the crescent groove, causing a measurement error of 0.05 to 0.2mm.

[0027] 5. Avoid the problem that when moving the measuring device to find the lowest point of the groove or the crescent groove, the bottom of the measuring device rubs against the roller ring, causing the bottom of the measuring device to wear and affecting the measurement accuracy.

[0028] 6. Improve the measurement accuracy and stability of the crescent groove depth, further improve the processing accuracy of the crescent groove of the roller and the roller ring, and more accurately control the rolling accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the prior art; Figure 2 is a schematic diagram of the appearance of the prior art roller ring; Figure 3 is a schematic diagram of the total assembly effect of the device of the present application; Figure 4 is a schematic diagram of the structure of the parts of the present application; Figure 5 is a schematic diagram of the parallel vertical seat structure and various viewing angles of the present application; Figure 6 is a schematic diagram of the hollow sliding block structure and various viewing angles of the present application; Figure 7 is a schematic diagram of the hollow centering block structure and various viewing angles of the present application; Figure 8 is a schematic diagram of the parallel vertical mechanism and the automatic centering measurement mechanism of the present application; Figure 9 is a schematic diagram of the working principle of the device of the present application; Figure 10 is a schematic diagram of the device of the present application for measuring different sizes of grooves.

[0030] In the figure: 1. dial gauge; 2. plug screw; 3. spring; 4. parallel vertical seat; 5. locking screw; 6. hollow sliding block; 7. hollow centering head. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] Please refer to Figures 1-9 , the new crescent groove depth measuring device is composed of a parallel and vertical mechanism and an automatic centering measuring mechanism. The parallel and vertical mechanism makes the device keep parallel with the central axis of the roll ring by fully contacting the roll body at the same time, and the automatic centering measuring mechanism vertically slides in the parallel and vertical mechanism to measure the depth of the crescent groove. As shown in Figure 4 , Figure 8 , the parallel and vertical mechanism can make the device keep parallel with the axis of the roll ring by fully contacting the roll body at the same time through the two edges on the bottom of the parallel and vertical seat 4 which are in the same horizontal plane and parallel to each other, and the vertical center line keeps vertical with the axis of the roll ring.

[0033] The automatic centering measuring mechanism is composed of a hollow centering head 7 and a dial gauge 1 connected and installed through a hollow sliding block 6. The dial gauge 1 is fixed on the hollow sliding block, and the dial gauge 1 needle can pass through the hollow centering block 7. The automatic centering measuring mechanism can vertically slide up and down in the hollow sliding block 6 installation hole of the parallel and vertical mechanism, and the spring 3 provides a vertical downward thrust for the automatic centering measuring mechanism.

[0034] The parallel and vertical mechanism includes a parallel and vertical seat 4, as shown in Figure 5 , the two edges on the bottom of the parallel and vertical seat 4 are aligned and parallel to each other, which are used to fully fit the cylindrical surface of the roll ring, so that the parallel and vertical seat 4 keeps parallel with the axis of the roll ring. The parallel and vertical seat 4 is provided with a hollow sliding block 6 installation hole, which is used to install the hollow sliding block 6, the spring 3 and the plug screw 2, so that the hollow sliding block 6 can vertically slide up and down in the hole. The automatic centering measuring mechanism includes a dial gauge 1, which is provided with a measuring needle on the dial head, can measure the depth of the crescent groove with a bottom width of only 0.3mm, and is fixedly installed on the top end of the hollow sliding block 6. The bottom end of the hollow sliding block 6 is detachably installed with a hollow centering head 7 through precise butt joint, as shown in Figure 7 and Figure 4 , a through hole is opened on the vertical center line, the dial gauge 1 needle can pass out of the through hole, and is installed on the hollow sliding block 6 to align the center of the groove hole. The top of the hollow centering head 7 is provided with a stop edge to prevent it from retracting into the hollow sliding block 6, and the bottom surface of the hollow centering head 7 is arc-shaped to simultaneously fit the two sides of the roll ring groove hole during measurement.

[0035] Further, the mounting hole of the parallel vertical seat 4 is provided with threads on both sides, and a plug screw 2 is internally screwed, used to plug the hollow sliding block 6, to ensure that the hollow sliding block 6 slides within the stroke and will not slide out of the parallel vertical seat 4, and to be able to fine-tune the stroke of the hollow sliding block 6, the bottom end of the plug screw 2 is fixedly connected with a spring 3, used to provide a vertical downward pressure for the hollow sliding block 6, to push the hollow centering block 7 vertically towards the roller ring groove hole for centering, and the spring 3 is located between the plug screw 2 and the ears on both sides of the hollow sliding block 6.

[0036] Further, the front of the parallel vertical seat 4 is screw-connected with a locking screw 5, which is perpendicular to the hollow sliding block 6, used to lock the centering position of the hollow sliding block 6, to provide convenience for the measurement process and to improve the measurement stability.

[0037] The working principle and method steps of the device are as follows: 1. As Figure 5 , Figure 9 , the two edges of the bottom of the parallel vertical seat 4 are in the same horizontal plane and parallel to each other, and are placed on the roller body of the roller ring that has been processed, when the two edges of the bottom are in full contact with the roller body at the same time, the parallel vertical seat 4 is parallel to the axis of the roller ring, and the vertical center line of the parallel vertical seat 4 is perpendicular to the axis of the roller ring.

[0038] 2. As Figure 4 , Figure 8 , the hollow centering head 7 and the dial gauge 1 are connected and installed through the hollow sliding block 6, so that they can vertically slide up and down in the parallel vertical seat 4, and the vertical center lines of the hollow centering head 7, the dial gauge 1, the hollow sliding block 6 and the parallel vertical seat 4 coincide with each other.

[0039] 3. As Figure 4 , Figure 9 , the measuring needle of the dial gauge 1 is aimed at the center of the bottom of the groove hole on the roller ring groove hole without a crescent groove, and then the device is placed on the roller body of the roller ring, and the two edges of the bottom of the parallel vertical seat 4 are adjusted to be in full contact with the roller body at the same time to make the device horizontal with the axis of the roller ring. At this time, under the joint action of the gravity of the measuring device and the pushing force of the spring 3, the hollow centering block 7 will be vertically pressed towards the roller ring groove hole, when the two edges of the hollow centering block 7 are in contact with the two edges of the groove hole at the same time, the device completes automatic centering. The measuring needle of the dial gauge 1 is vertically pointed to the lowest point of the groove hole and is perpendicular to the axis of the roller ring. Then the hollow sliding block 6 is locked, the dial gauge 1 is lifted and then gently put down to determine the measurement reference point, then the dial gauge 1 is set to zero, and the reading of the small dial of the dial gauge 1 is remembered. As Figure 9As shown, take the device again, put the dial gauge 1 measuring needle into the crescent groove, adjust the parallel vertical seat 4 to make the two edges of the bottom fully contact the roll body at the same time, keep the device horizontal with the roll ring axis, at this time the hollow centering block 7 can contact the two edges of the roll ring groove hole at the same time, the device completes automatic centering, the dial gauge 1 measuring needle automatically points vertically to the bottom of the crescent groove and is perpendicular to the axis of the roll ring, at this time lift the dial gauge 1 dial head and put it down again, read the dial gauge 1 large dial value and small dial value, subtract the small dial value measured when determining the measurement reference point and add the large dial value measured now, the accurate depth of the crescent groove is obtained.

[0040] 4、As shown in Figure 10 According to the size of the groove hole, the hollow centering block 7 of different sizes can be selected to better adapt to the measurement of the depth of the crescent groove with different sizes of groove holes, and the measurement accuracy is further improved.

[0041] The device does not need to find the lowest point of the crescent groove by moving the measuring device, and the hollow centering block 7 is used to align the center of the groove hole, so that the dial gauge 1 measuring needle is perpendicular to the roll ring axis and points vertically to the lowest point of the crescent groove, the depth of the crescent groove is accurately measured, and multiple repeated measurements are not required, and all measurement errors caused by moving the measuring device to find the lowest point of the crescent groove can be eliminated.

[0042] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel device for measuring the depth of the crescent-shaped alveolar ridge, characterized in that: It consists of a parallel vertical mechanism and an automatic centering measurement mechanism. The parallel vertical mechanism makes full contact with the cylindrical surface of the roller ring to be measured, so that the device is parallel to the axis of the roller ring. The automatic centering measurement mechanism slides vertically up and down within the parallel vertical mechanism to measure the depth of the crescent groove. The parallel vertical mechanism includes a parallel vertical seat (4), the two bottom sides of which are parallel and aligned with each other and completely fit the cylindrical surface of the roller body, and a hollow slider (6) is slidably installed inside. The automatic centering measuring mechanism includes a dial indicator (1), which is fixedly installed on the top of the hollow slider (6). The bottom of the hollow slider (6) is detachably installed with a hollow centering head (7) through precision docking. The hollow centering head (7) is used to replace the corresponding hollow centering head (7) when measuring slots of different sizes. The bottom surface of the hollow centering head (7) is arc-shaped and fits against both sides of the roller ring slot during measurement.

2. The novel crescent depth measuring device according to claim 1, characterized in that: Two symmetrical ears are fixedly installed on the outer wall of the middle part of the hollow slider (6), and the parallel vertical seat (4) has a through hole from top to bottom, which is precisely matched with the hollow slider (6).

3. The novel crescent depth measuring device according to claim 2, characterized in that: The mounting hole of the parallel vertical seat (4) is provided with threads on both sides, and the internal threads are connected to a plug screw (2) to block the hollow slider (6). The bottom end of the plug screw (2) is fixedly connected to a spring (3) to provide vertical downward pressure to the hollow slider (6).

4. The novel crescent depth measuring device according to claim 3, characterized in that: The spring (3) is located between the plug screw (2) and the ears on both sides of the hollow slider (6).

5. The novel crescent depth measuring device according to claim 1, characterized in that: The parallel vertical seat (4) has a locking screw (5) threaded on the front. The locking screw (5) is perpendicular to the hollow slider (6) and is used to lock the hollow slider (6) in the center position.

6. The novel crescent depth measuring device according to claim 1, characterized in that: The hollow centering head (7) has a through hole at the vertical center line position, which is used to accommodate the probe of the dial indicator (1) to pass through the through hole.

7. The novel crescent depth measuring device according to claim 1, characterized in that: The hollow slider (6) has a hole on its vertical center line. The upper end is a round hole for mounting a dial indicator (1) and is fixed with a stud. The lower end is a square hole for connecting a hollow centering head (7).

8. The novel method for measuring the depth of the lunula according to claim 1, characterized in that: Includes the following steps: S1. Place the parallel vertical seat (4) on the roller body of the already processed roller ring. When the two bottom edges are in complete contact with the roller body at the same time, the parallel vertical seat (4) and the axis of the roller ring remain parallel, and the vertical center line of the parallel vertical seat (4) remains perpendicular to the axis of the roller ring. S2. Connect and install the hollow centering head (7) and dial indicator (1) through the hollow slider (6) so that they can slide vertically up and down in the parallel vertical seat (4). At this time, the vertical center line of the hollow centering head (7), dial indicator (1) and hollow slider (6) coincides with the vertical center line of the parallel vertical seat (4). S3. At the position where there is no crescent groove on the roller ring, align the probe of the dial indicator (1) with the center of the bottom of the groove hole, and adjust it by hand so that the two sides of the bottom of the parallel vertical seat (4) are in complete contact with the roller body at the same time. Under the combined action of the gravity of the measuring device and the thrust of the spring (3), the hollow centering block (7) will be pressed vertically into the groove hole of the roller ring. When the two sides of the hollow centering block (7) are in contact with the two sides of the groove hole at the same time, the device completes automatic centering. The probe of the dial indicator (1) will point vertically to the lowest point of the groove hole and be perpendicular to the axis of the roller ring. Then lock the hollow slider (6), lift the dial indicator (1) head and gently put it down to determine the measurement reference point. Set the large dial of the dial indicator (1) to zero and remember the reading of the small dial of the dial indicator (1). S4. Pick up the device, roughly align the dial indicator (1) probe with the center of the bottom of the crescent groove and place it into the crescent groove. Adjust it so that the two bottom edges of the parallel vertical seat (4) are in complete contact with the roller body at the same time, and keep the device and the central axis of the roller ring horizontal. At this time, the hollow centering block (7) and the two sides of the groove hole of the roller ring can contact at the same time, and the device completes automatic centering. The dial indicator (1) probe automatically points vertically to the bottom of the crescent groove and is perpendicular to the axis of the roller ring. At this time, lift the dial indicator (1) head and then gently put it down. Read the value of the large dial and the value of the small dial (1) of the dial indicator (1). Subtract the value of the small dial when determining the measurement reference point from the value of the small dial at this time, and add the value of the large dial at this time to obtain the accurate depth of the crescent groove.

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