Inner hole chamfer measuring device and measuring method

Abstract

The present application discloses an inner hole chamfer measuring device and a measuring method, and belongs to the technical field of equipment for measuring the dimensions of parts. The inner hole chamfer measuring device and a measuring method include a lifting platform, the lifting platform is used to place the workpiece to be measured, a recording mechanism, the recording mechanism includes a driving block, a recording pen and a drawing component are installed on one side of the driving block, and a pushing mechanism is installed on one side of the driving block, and the recording mechanism is used to record the contour of the inner hole chamfer; a positioning component, the positioning component is used to locate the center position of the inner hole; a paper changing component, the paper changing component includes a component for replacing the scale paper; an adjusting component, and the adjusting component is used to change the position of the drawing component. The technical solution of the present application is convenient for the staff to measure the parameters of the inner hole chamfer by setting a driving block, a contact rod and a pushing mechanism, and it is also convenient for the staff to observe the inner hole chamfer in more detail.

Description

Technical Field

[0001] The present application relates to the technical field of equipment for measuring component dimensions, and more specifically, to an inner hole chamfer measuring device and a measuring method. Background Art

[0002] As one of the most common processes in mechanical processing, internal chamfering can significantly improve the mechanical properties and assembly performance of the hole edge. In order to ensure the processing accuracy of the product and improve product quality, relevant personnel often use internal chamfering measuring devices to measure various parameters of internal control chamfering.

[0003] The calibration tool currently used in China to measure the hole angle of a workpiece is a vernier caliper. When a vernier caliper is used to measure the hole angle, its jaws are easily interfered with the workpiece, resulting in large measurement errors and inaccurate readings. For workpieces with high requirements for size, it cannot meet the measurement requirements.

[0004] The document with prior art publication number CN220893227U provides a small hole chamfer depth measuring device. The device can conveniently and quickly disassemble and assemble the steel ball by setting a knob, a worm and a worm gear, and is convenient for detecting the chamfer depth of small holes of different diameters, thereby improving the applicability of the device.

[0005] Although the above-mentioned existing technical solutions can measure the chamfers of inner holes of different specifications and sizes, they still have the following defects: when using the above-mentioned technical solutions to measure the chamfers of inner holes of different specifications, it is necessary to frequently replace the steel ball at the end of the device, and it is also difficult to grasp whether the steel ball is in contact with the chamfer end during the actual operation. Not only is the operation cumbersome, but the accuracy is also low, and it is difficult to ensure the smooth progress of the chamfer measurement. In view of this, we propose an inner hole chamfer measurement device and a measurement method. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] The purpose of the present application is to provide an inner hole chamfer measuring device and a measuring method, which solves the technical problems in the prior art that the operation is cumbersome, the accuracy is low, and it is difficult to ensure the smooth progress of the chamfer measurement. By setting a driving block, a contact rod and a pushing mechanism, the projection shape of the inner hole chamfer can be recorded on the scale paper, which is convenient for the staff to measure the parameters of the inner hole chamfer and also convenient for the staff to observe the inner hole chamfer more carefully. The inner hole chamfer can be quickly measured without the staff replacing the parts.

[0008] 2. Technical solution

[0009] An embodiment of the present application provides an inner hole chamfer measuring device, including a lifting platform, the lifting platform is used to place the workpiece to be measured, a recording mechanism, the recording mechanism includes a driving block, a recording pen and a drawing component are installed on one side of the driving block, a pushing mechanism is installed on one side of the driving block, the pushing mechanism is used to drive the driving block to move in a straight line, and the recording mechanism is used to record the contour of the inner hole chamfer; a positioning component, the positioning component is used to locate the center position of the inner hole; a paper changing component, the paper changing component includes a component for replacing the scale paper; and an adjustment component, the adjustment component is used to change the position of the drawing component to measure different positions of the inner hole chamfer.

[0010] After adopting the above technical solution, it is convenient for the staff to measure the parameters of the inner hole chamfer, and it is also convenient for the staff to observe the inner hole chamfer more carefully. The inner hole chamfer can be quickly measured without the staff replacing the parts.

[0011] As an optional solution of the technical solution of the present application document, the drawing component includes: an installation shell and a receiving shaft, the receiving shaft is limited by the inner wall of the installation shell and is rotatably connected thereto, the two receiving shafts are arranged in a symmetrical structure, and a first coil spring is fixedly connected between the receiving shaft and the installation shell; a movable rod, the movable rod is detachably mounted on one side of the receiving shaft, the end of the movable rod is fixedly connected to a contact rod, and a miniature steel ball is embedded in the end of the contact rod; a linkage rod, the linkage rod is fixedly mounted on the other side of the receiving shaft, and the recording pen is mounted on the end of the linkage rod.

[0012] After adopting the above technical solution, the micro steel balls can significantly reduce the friction between the contact rod and the inner hole of the workpiece, preventing wear of the inner hole.

[0013] As an optional solution of the technical solution of the present application document, a connecting sleeve is fixedly installed on one side of the receiving shaft, and the movable rod is threadedly connected to the connecting sleeve.

[0014] After adopting the above technical solution, the staff can quickly disassemble and assemble the movable rod. When the inner hole size is small, the single movable rod and the contact rod can also smoothly record and measure the depth size of the inner hole, effectively improving the applicability of this technical solution.

[0015] As an optional solution of the technical solution of the present application document, the pushing mechanism includes a support frame, a screw rod is rotatably connected to the support frame, the driving block is restricted by the support frame and slidably connected thereto, and the driving block is threadedly connected to the screw rod.

[0016] After adopting the above technical solution, the driving block can smoothly drive the mounting shell to move linearly.

[0017] As an optional scheme of the technical scheme of the present application document, the positioning assembly includes: a fixed plate, the fixed plate is provided with a limit groove matched with the driving frame, and the driving frame is limited and slides in the limit groove; a moving plate, the moving plate is rotatably connected to one side of the fixed plate, the moving plate is provided with a plurality of driving grooves, the driving grooves are arranged in an arc-shaped structure, the driving frame is slidably connected to the driving grooves, the center positions of the fixed plate and the moving plate and the midpoint position between the two contact rods are in the same straight line; a positioning rod, the positioning rod is installed on one side of the driving frame, the positioning rod includes a positioning plate slidably penetrated on one side of the driving frame, and a first spring is fixedly connected between the positioning plate and the driving frame; a rotating mechanism; the rotating mechanism includes a rack, a gear ring and a pushing mechanism, and the pushing mechanism is used to drive the rack to move linearly.

[0018] After adopting the above technical solution, the center position of the inner hole of the workpiece and the midpoint position between the two contact rods are in the same straight line, thereby fully ensuring the accuracy of the depicted inner hole chamfer profile and reducing the error of the measured chamfer size.

[0019] As an optional solution of the technical solution of this application document, the pushing mechanism includes a first screw, which is threadedly connected to one side of the fixed plate, the rack is restricted by the fixed plate and slidably connected thereto, and the rack is restricted by the end of the first screw and rotatably connected thereto.

[0020] After adopting the above technical solution, the movable plate can rotate smoothly, and the first screw has a self-locking property, which can prevent the movable plate from shaking randomly.

[0021] As an optional solution of the technical solution of the present application document, the adjusting component includes: a driving gear, the mounting shell is limited by one side of the driving block and is rotatably connected thereto, and the driving gear is sleeved and fixed on one side of the mounting shell; an active gear, the active gear is meshed and connected with the driving gear; a driving mechanism, the driving mechanism is used to drive the active gear to rotate, the driving mechanism includes a rotating rod, a bearing block, a first serrated disk and a second serrated disk, the rotating rod is rotatably penetrated on the bearing block, the active gear is fixedly connected to the rotating rod, a plurality of second springs are fixedly connected to one side of the rotating rod, an end of the second spring is limited by the bearing block and is slidably connected thereto, the first serrated disk is fixedly installed on the bearing block, the second serrated disk is sleeved and fixed on one side of the rotating rod, and the first serrated disk is snap-fitted with the second serrated disk.

[0022] After adopting the above technical solution, the staff can record the contours of different positions of the inner hole chamfer, thereby measuring the dimensions of different positions of the chamfer, and further improving the accuracy of the measurement data.

[0023] As an optional solution to the technical solution of the present application document, the recording pen includes: a mounting tube and a trace pen, the mounting tube is sleeved on one side of the linkage rod, a bolt is threadedly connected to the mounting tube, and the end of the bolt is in frictional contact with the mounting tube; a driving column, the driving column is limited by the mounting tube and is slidably connected to it, and a second screw is threadedly connected to the other side of the mounting tube, the end of the driving column is limited by one end of the second screw and is rotatably connected to it, and the trace pen is detachably mounted on one side of the driving column.

[0024] After adopting the above technical solution, it is convenient for the staff to adjust the position of the trace pen.

[0025] As an optional solution to the technical solution of the present application document, a receiving plate, the front end surface of the receiving plate has inverted circular structures on both sides; a driving roller, a ratchet is fixedly sleeved on one side of the driving roller, a pawl is installed on one side of the ratchet, the pawl is engaged with the ratchet, and a third coil spring is fixedly connected between the pawl and the fixed surface; a paper winding roller, a second coil spring is fixedly connected between the paper winding roller and the fixed surface; the paper winding roller is used to place a roll of scale paper.

[0026] After adopting the above technical solution, the staff can replace the scale paper conveniently and quickly, thereby improving the practicality of the technical solution.

[0027] The present application also discloses a method for measuring an inner hole chamfer, which is implemented based on any one of the inner hole chamfer measuring devices described above, and comprises the following steps:

[0028] S1. The staff rotates the first screw and continuously adjusts the position of the workpiece until the positioning plate fits the outer side of the inner hole of the workpiece;

[0029] S2. The staff member turns the rotating rod to one side and rotates it until the installation housing and the contact rod are rotated to the appropriate position;

[0030] S3, press the linkage rod inward to make the micro steel ball contact the inner wall of the inner hole of the workpiece, and adjust the trace pen so that its writing end contacts the surface of the scale paper;

[0031] S4. The staff rotates the screw, and as the micro steel ball slides over the inner wall of the workpiece hole, the contour of the inner wall of the workpiece hole will also be recorded on the scale paper by the recording pen;

[0032] S5. After reading the data from the scale on the scale paper, the chamfer depth can be obtained at the corresponding multiple.

[0033] 3. Beneficial effects

[0034] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0035] 1. The technical solution of the present application can record the projection shape of the inner hole chamfer on the scale paper by setting the driving block, the contact rod and the pushing mechanism, which is convenient for the staff to measure the parameters of the inner hole chamfer and also convenient for the staff to observe the inner hole chamfer in more detail.

[0036] 2. The technical solution of the present application sets a fixed plate, a movable plate and a rotating mechanism so that the center position of the inner hole of the workpiece and the midpoint position between the two contact rods are in the same straight line, thereby fully ensuring the accuracy of the depicted inner hole chamfer profile and reducing the error of the measured chamfer size.

[0037] 3. The technical solution of the present application enables the staff to record the contours of different positions of the chamfer of the inner hole by setting a driving gear, an active gear and a driving mechanism, thereby measuring the dimensions of different positions of the chamfer and further improving the accuracy of the measurement data.

[0038] 4. The technical solution of the present application is to set up a connecting sleeve, and since the movable rod is threadedly connected to the connecting sleeve, this enables the staff to quickly disassemble and assemble the movable rod. When the inner hole size is small, the single movable rod and the contact rod can also smoothly record and measure the depth size of the inner hole, effectively improving the applicability of the present technical solution.

[0039] 5. The technical solution of the present application enables the staff to quickly and easily replace the scale paper by setting a receiving plate, a driving roller and a paper winding roller, which facilitates the continuous measurement of the inner hole chamfer, and effectively improves the practicality of the technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the overall structure of an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0041] Figure 2 A schematic diagram of the structure of a recording mechanism in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0042] Figure 3 It is a structural schematic diagram depicting components in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0043] Figure 4 This is a schematic diagram of the structural disassembly of a movable rod and a connecting sleeve in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0044] Figure 5 It is a structural schematic diagram of a positioning component in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0045] Figure 6 A schematic diagram of the structure of a positioning rod in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0046] Figure 7 A schematic diagram of the structure of an adjustment component in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0047] Figure 8 A schematic diagram of the structure of a driving mechanism in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0048] Fig. 9 A schematic diagram of the structure of a recording pen in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0049] Fig.10 It is a structural schematic diagram of a paper changing assembly in an inner hole chamfer measuring device disclosed in a preferred embodiment of the present application;

[0050] Explanation of the numbers in the figure: 1. lifting platform; 2. driving block; 3. screw rod; 4. support frame; 5. recording pen; 501. installation cylinder; 502. second screw rod; 503. bolt; 504. driving column; 505. trace pen; 6. drawing component; 601. installation shell; 602. movable rod; 603. first coil spring; 604. receiving shaft; 605. linkage rod; 606. contact rod; 607. connecting sleeve; 608. micro steel ball; 7. positioning component; 701. fixed plate; 702. limit groove; 703. movable plate; 704. driving frame; 7 05, driving groove; 706, positioning plate; 707, rack; 708, gear ring; 709, first screw; 710, first spring; 8, paper changing assembly; 801, receiving plate; 802, driving roller; 803, paper winding roller; 804, second coil spring; 805, scale paper; 806, ratchet; 807, pawl; 808, third coil spring; 9, adjusting assembly; 901, driving gear; 902, driving gear; 903, rotating rod; 904, bearing block; 905, second spring; 906, first serrated disk; 907, second serrated disk. DETAILED DESCRIPTION

[0051] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0052] Reference Figure 1-10 The embodiment of the present application provides an inner hole chamfer measuring device, which includes a lifting platform 1, a recording mechanism, a positioning component 7, a paper changing component 8 and an adjustment component 9.

[0053] Among them, the lifting platform 1 is used to place the workpiece to be measured, the recording mechanism includes a driving block 2, a recording pen 5 and a drawing component 6 are installed on one side of the driving block 2, a pushing mechanism is installed on one side of the driving block 2, the pushing mechanism is used to drive the driving block 2 to move in a straight line, and the recording mechanism is used to record the contour of the inner hole chamfer; the positioning component 7 is used to locate the center position of the inner hole; the paper changing component 8 includes a component for replacing the scale paper 805; the adjustment component 9 is used to change the position of the drawing component 6 and measure different positions of the inner hole chamfer.

[0054] The staff places the workpiece to be measured on the lifting platform 1, and adjusts its position to an appropriate state with the assistance of the positioning component 7. Then, under the action of the pushing mechanism, the driving block 2 drives the drawing component 6 and the recording pen 5 to move, and the projection shape of the inner hole chamfer is recorded on the scale paper 805. This is convenient for the staff to measure the parameters of the inner hole chamfer and to observe the inner hole chamfer in more detail. The inner hole chamfer can be quickly measured without the staff replacing the parts.

[0055] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The inner hole chamfer measuring device provided in the embodiment of the present application, the depiction component 6 includes a mounting shell 601, a first coil spring 603, a movable rod 602, a receiving shaft 604 and a linkage rod 605.

[0056] The receiving shaft 604 is limited by the inner wall of the mounting housing 601 and is rotatably connected thereto. The two receiving shafts 604 are arranged in a symmetrical structure. A first coil spring 603 is fixedly connected between the receiving shaft 604 and the mounting housing 601.

[0057] The movable rod 602 is detachably mounted on one side of the receiving shaft 604, and the end of the movable rod 602 is fixedly connected to the contact rod 606, and the end of the contact rod 606 is embedded with a micro steel ball 608, which can significantly reduce the friction between the contact rod 606 and the inner hole of the workpiece to prevent the inner hole from being worn;

[0058] A connecting sleeve 607 is fixedly installed on one side of the receiving shaft 604, and the movable rod 602 is threadedly connected to the connecting sleeve 607; this enables the staff to quickly disassemble and assemble the movable rod 602. When the inner hole size is small, the single movable rod 602 and the contact rod 606 can also smoothly record and measure the depth size of the inner hole, effectively improving the applicability of the technical solution;

[0059] The linkage rod 605 is fixedly mounted on the other side of the receiving shaft 604, and the recording pen 5 is mounted on the end of the linkage rod 605;

[0060] On the basis of the above scheme, the internal hole chamfer measuring device provided by the present application has a length dimension of the linkage rod 605 which is an integer multiple of the sum of the length dimensions of the movable rod 602 and the connecting sleeve 607, and a chamfer outline drawn by the recording pen 5 which is an integer multiple of the formal dimension of the internal hole chamfer. After the staff measures and records the graphic dimension, they divide the measured data by the corresponding multiple to obtain the accurate dimension. In this way, on the one hand, the staff can observe the direction of the internal hole chamfer more clearly; on the other hand, it is also convenient for the staff to measure smaller chamfer dimensions.

[0061] On the basis of the above scheme, the inner hole chamfer measuring device provided in the present application, the driving mechanism includes a support frame 4, a screw rod 3 is rotatably connected to the support frame 4, the driving block 2 is restricted by the support frame 4 and is slidably connected thereto, and the driving block 2 is threadedly connected to the screw rod 3.

[0062] The staff presses the linkage rod 605 inward to make the micro steel ball 608 contact the inner wall of the inner hole of the workpiece, and makes the recording pen 5 contact the scale paper 805. Then the staff rotates the screw 3, and the driving block 2 will drive the movable rod 602, the linkage rod 605 and the recording pen 5 to move toward the outside of the inner hole. As the micro steel ball 608 slides over the inner wall of the inner hole of the workpiece, the contour of the inner wall of the inner hole of the workpiece will also be recorded by the recording pen 5 on the scale paper 805, so that the staff can not only conveniently and quickly measure the chamfers of inner holes of different sizes, but also make detailed observations on the chamfers, effectively improving the efficiency of inner hole chamfer measurement.

[0063] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 In the inner hole chamfer measuring device provided in the embodiment of the present application, the positioning assembly 7 includes a fixed plate 701, a movable plate 703, a driving frame 704, a positioning rod and a rotating mechanism.

[0064] The fixed plate 701 is provided with a limiting groove 702 matched with the driving frame 704 , and the driving frame 704 is limited and slidable in the limiting groove 702 .

[0065] The movable plate 703 is rotatably connected to one side of the fixed plate 701. A plurality of driving grooves 705 are provided on the movable plate 703. The driving grooves 705 are arranged in an arc-shaped structure. The driving frame 704 is slidably connected to the driving grooves 705. The center positions of the fixed plate 701 and the movable plate 703 are in the same straight line with the midpoint position between the two contact rods 606.

[0066] The positioning rod is installed on one side of the driving frame 704, and the positioning rod includes a positioning plate 706 that is slidably penetrated on one side of the driving frame 704. A first spring 710 is fixedly connected between the positioning plate 706 and the driving frame 704. The setting of the first spring 710 enables the positioning plate 706 to be extended and retracted within a certain range, thereby ensuring smooth measurement.

[0067] On the basis of the above scheme, the internal hole chamfer measuring device provided by the present application, the rotating mechanism includes a rack 707, a gear ring 708 and a pushing mechanism, and the pushing mechanism is used to drive the rack 707 to move linearly;

[0068] The gear ring 708 is sleeved and fixed on one side of the moving plate 703, and the pushing mechanism is used to drive the rack 707 to move linearly, and the rack 707 is meshed and connected with the gear ring 708;

[0069] The pushing mechanism includes a first screw rod 709, which is threadedly connected to one side of the fixed plate 701, a rack 707 is limited by the fixed plate 701 and is slidably connected thereto, and a rack 707 is limited by the end of the first screw rod 709 and is rotationally connected thereto.

[0070] Before the formal measurement of the inner hole chamfer, the staff moves the workpiece to be measured so that the inner hole of the workpiece is close to the end of the positioning plate 706, and then the staff rotates the first screw 709, the rack 707 moves to one side, and because the rack 707 is meshed with the gear ring 708, the movable plate 703 rotates immediately, and the driving frame 704 drives the positioning plate 706 to move inward under the drive of the driving groove 705. In this process, the position of the workpiece is continuously adjusted until the positioning plate 706 fits the outer side of the inner hole of the workpiece. In this way, the center position of the inner hole of the workpiece and the midpoint position between the two contact rods 606 are in the same straight line, thereby fully ensuring the accuracy of the inner hole chamfer profile drawn and reducing the error of the measured chamfer size.

[0071] In a specific implementation, the first screw rod 709 may also be replaced by an electric or pneumatic drive member, as long as the function of driving the rack 707 to move can be achieved.

[0072] Reference Figure 2 , Figure 7 and Figure 8 In the inner hole chamfer measuring device provided in the embodiment of the present application, the adjusting component 9 includes a driving gear 901, an active gear 902 and a driving mechanism.

[0073] The mounting housing 601 is limited to one side of the driving block 2 and is rotatably connected thereto, and the driving gear 901 is sleeved and fixed on one side of the mounting housing 601. The driving gear 902 is meshed and connected with the driving gear 901; the driving mechanism is used to drive the driving gear 902 to rotate.

[0074] On the basis of the above-mentioned scheme, the inner hole chamfer measuring device provided in the present application has a driving mechanism including a rotating rod 903 , a bearing block 904 , a first serrated disk 906 and a second serrated disk 907 .

[0075] During implementation, the rotating rod 903 is rotatably installed on the supporting block 904, the driving gear 902 is fixedly connected to the rotating rod 903, and a plurality of second springs 905 are fixedly connected to one side of the rotating rod 903, and the ends of the second springs 905 are limited by the supporting block 904 and slidably connected thereto.

[0076] During implementation, the first serrated disk 906 is fixedly mounted on the supporting block 904, and the second serrated disk 907 is sleeved and fixed on one side of the rotating rod 903. The first serrated disk 906 is snap-fitted with the second serrated disk 907. After the staff releases the rotating rod 903, under the action of the second spring 905, the second serrated disk 907 is immediately reset and snap-fitted with the first serrated disk 906, thereby limiting the installation shell 601 and preventing the installation shell 601 and the contact rod 606 from moving at will.

[0077] Specifically, in the process of measuring the inner hole chamfer, the staff pushes the rotating rod 903 to one side to disengage the first serrated disk 906 from the second serrated disk 907, and then rotates the rotating rod 903, and the driving gear 902 follows the rotation. Since the driving gear 902 is meshed and connected with the driving gear 901, the mounting shell 601 then drives the contact rod 606 to rotate synchronously, and then adjusts the position of the recording pen 5 so that it can contact the surface of the scale paper 805, so that the staff can record the contours of different positions of the inner hole chamfer, thereby measuring the dimensions of different positions of the chamfer, and further improving the accuracy of the measurement data.

[0078] Reference Figure 3 and Fig. 9 In the inner hole chamfer measuring device provided in the embodiment of the present application, the recording pen 5 includes a mounting tube 501, a driving column 504 and a trace pen 505.

[0079] Specifically, the mounting tube 501 is sleeved on one side of the linkage rod 605, and a bolt 503 is threadedly connected to the mounting tube 501, and the end of the bolt 503 is in frictional contact with the mounting tube 501; the driving column 504 is limited by the mounting tube 501 and is slidably connected thereto, and a second screw 502 is threadedly connected to the other side of the mounting tube 501, and the end of the driving column 504 is limited by one end of the second screw 502 and is rotatably connected thereto, and the trace pen 505 is detachably installed on one side of the driving column 504.

[0080] After adjusting the positions of the mounting shell 601 and the contact rod 606, the staff rotates the mounting cylinder 501 so that the writing end of the trace pen 505 is perpendicular to the surface of the scale paper 805, and then rotates the second screw 502 until the writing end of the trace pen 505 contacts the surface of the scale paper 805, thereby ensuring the smooth recording of the chamfer contour.

[0081] Reference Figure 1 and Fig.10, the inner hole chamfer measuring device provided in the embodiment of the present application, the paper changing assembly 8 includes a receiving plate 801, a driving roller 802 and a paper winding roller 803;

[0082] The paper winding roller 803 is used to place the scale paper 805 roll;

[0083] On the basis of the above scheme, the inner hole chamfer measuring device provided by the present application has an inverted circular structure on both sides of the front end face of the receiving plate 801, and a second coil spring 804 is fixedly connected between the paper winding roller 803 and the fixed surface. Due to the setting of the second coil spring 804 and the inverted circular structure on both sides of the front end face of the receiving plate 801, the released scale paper 805 can fit tightly on the front end face of the receiving plate 801, fully ensuring the smooth measurement of the chamfer contour, a ratchet 806 is sleeved and fixed on one side of the driving roller 802, a pawl 807 is installed on one side of the ratchet 806, the pawl 807 is snap-fitted with the ratchet 806, and a third coil spring 808 is fixedly connected between the pawl 807 and the fixed surface.

[0084] Specifically, before measuring the chamfer of the inner hole, the staff will put the scale paper 805 roll on the outside of the paper winding roller 803, and fit one side of the scale paper 805 tightly on the receiving plate 801, and then fix the end of the scale paper 805 on the driving roller 802. When the scale paper 805 needs to be replaced, the staff will rotate the driving roller 802. At this time, the pawl 807 slides on the ratchet 806, and the scale paper 805 roll is gradually unfolded onto the receiving plate 801, so that the staff can replace the scale paper 805 conveniently and quickly, thereby improving the practicality of the present technical solution; after the driving roller 802 stops rotating, the pawl 807 will limit the ratchet 806 and the driving roller 802, thereby preventing the scale paper 805 from being rolled back.

[0085] As a specific embodiment of the present application, the inner hole chamfer measurement method recorded in this embodiment is implemented based on any inner hole chamfer measurement device, and includes the following steps:

[0086] S1, the staff rotates the first screw 709 and continuously adjusts the position of the workpiece until the positioning plate 706 fits the outer side of the inner hole of the workpiece;

[0087] S2, the staff rotates and pushes the rotating rod 903 to one side and rotates it until the installation housing 601 and the contact rod 606 are rotated to a proper position;

[0088] S3, press the linkage rod 605 inward to make the micro steel ball 608 contact the inner wall of the inner hole of the workpiece, and adjust the trace pen 505 so that its writing end contacts the surface of the scale paper 805;

[0089] S4, the staff rotates the screw 3, and as the micro steel ball 608 slides over the inner wall of the inner hole of the workpiece, the contour of the inner wall of the inner hole of the workpiece will also be recorded on the scale paper 805 by the recording pen 5;

[0090] S5. After reading the data from the scale on the scale paper 805 and the data is in the corresponding multiple, the chamfering depth can be obtained.

[0091] The implementation principle of the inner hole chamfer measuring device of the embodiment of the present application is as follows: when the staff needs to use the present technical solution to measure the inner hole chamfer, first, before the formal measurement of the inner hole chamfer, the staff moves the workpiece to be measured so that the inner hole of the workpiece is close to the end of the positioning plate 706, and then the staff rotates the first screw 709, the rack 707 moves to one side, and the movable plate 703 rotates immediately. Under the push of the driving groove 705, the driving frame 704 drives the positioning plate 706 to move inward. During this process, the staff continuously adjusts the position of the workpiece until the positioning plate 706 fits with the outer side of the inner hole of the workpiece.

[0092] Then the staff rotates and pushes the rotating rod 903 to one side, so that the first sawtooth disk 906 is separated from the second sawtooth disk 907, and then rotates the rotating rod 903 until the mounting housing 601 and the contact rod 606 are rotated to a proper position;

[0093] Then the staff presses the linkage rod 605 inward to make the micro steel ball 608 contact the inner wall of the inner hole of the workpiece, and rotates the mounting tube 501 so that the writing end of the trace pen 505 is perpendicular to the surface of the scale paper 805, then turns the bolt 503 to one side to fix the mounting tube 501, and then the staff rotates the second screw 502 until the writing end of the trace pen 505 contacts the surface of the scale paper 805.

[0094] Then the staff rotates the screw 3, and the driving block 2 drives the movable rod 602, the linkage rod 605 and the recording pen 5 to move to the outside of the inner hole. As the micro steel ball 608 slides over the inner wall of the workpiece inner hole, the contour of the inner wall of the workpiece inner hole will also be recorded by the recording pen 5 on the scale paper 805. The staff can read the data on the scale paper 805 and get the chamfer depth at the corresponding multiple, and can also get the chamfer bevel length by calculation.

[0095] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0097] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0098] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0099] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. Inner hole chamfer measuring device, characterized in that: Include: A lifting platform (1), wherein the lifting platform (1) is used to place a workpiece to be measured, A recording mechanism, the recording mechanism comprising a driving block (2), a recording pen (5) and a drawing component (6) being mounted on one side of the driving block (2), a first pushing mechanism being mounted on the other side of the driving block (2), the first pushing mechanism being used to drive the driving block (2) to move linearly, and the recording mechanism being used to record the contour of the chamfer of the inner hole; A positioning component (7), the positioning component (7) being used to locate the center position of the inner hole; A paper replacement assembly (8), the paper replacement assembly (8) comprising a device for replacing the scale paper (805); An adjusting component (9), the adjusting component (9) being used to change the position of the depicting component (6) and to measure different positions of the inner hole chamfer; The depiction component (6) comprises: A mounting shell (601) and a receiving shaft (604), wherein the receiving shaft (604) is restricted by the inner wall of the mounting shell (601) and is rotatably connected thereto, the two receiving shafts (604) are arranged in a symmetrical structure, and a first coil spring (603) is fixedly connected between the receiving shaft (604) and the mounting shell (601); A movable rod (602), the movable rod (602) being detachably mounted on one side of the receiving shaft (604), the end of the movable rod (602) being fixedly connected to a contact rod (606), the end of the contact rod (606) being embedded with a micro steel ball (608); A linkage rod (605), wherein the linkage rod (605) is fixedly mounted on the other side of the receiving shaft (604), and the recording pen (5) is mounted on the end of the linkage rod (605); The regulating component (9) comprises: A driving gear (901), the mounting housing (601) is restricted by one side of the driving block (2) and is rotationally connected thereto, and the driving gear (901) is sleeved and fixed on one side of the mounting housing (601); A driving gear (902), the driving gear (902) being meshedly connected with the driving gear (901); A driving mechanism, the driving mechanism is used to drive the active gear (902) to rotate, the driving mechanism comprises a rotating rod (903), a bearing block (904), a first sawtooth disk (906) and a second sawtooth disk (907), the rotating rod (903) is rotatably inserted into the bearing block (904), the active gear (902) is fixedly connected to the rotating rod (903), one side of the rotating rod (903) is fixedly connected to a plurality of second springs (905), an end of the second spring (905) is limited by the bearing block (904) and is slidably connected thereto, the first sawtooth disk (906) is fixedly mounted on the bearing block (904), the second sawtooth disk (907) is sleeved and fixed on one side of the rotating rod (903), and the first sawtooth disk (906) and the second sawtooth disk (907) are engaged in a snap fit.

2. The inner hole chamfer measuring device according to claim 1, characterized in that: A connecting sleeve (607) is fixedly mounted on one side of the receiving shaft (604), and the movable rod (602) is threadedly connected to the connecting sleeve (607).

3. The inner hole chamfer measuring device according to claim 1, characterized in that: The first pushing mechanism comprises a support frame (4), a screw rod (3) is rotatably connected to the support frame (4), the driving block (2) is restricted by the support frame (4) and is slidably connected thereto, and the driving block (2) is threadedly connected to the screw rod (3).

4. The inner hole chamfer measuring device according to claim 1, characterized in that: The positioning component (7) comprises: A fixed plate (701), wherein the fixed plate (701) is provided with a limiting groove (702) adapted to the driving frame (704), and the driving frame (704) is limitedly slidable in the limiting groove (702); A moving plate (703), the moving plate (703) being rotatably connected to one side of the fixed plate (701), the moving plate (703) being provided with a plurality of driving grooves (705), the driving grooves (705) being arranged in an arc-shaped structure, the driving frame (704) being slidably connected to the driving grooves (705), and the center positions of the fixed plate (701) and the moving plate (703) and the midpoint position between the two contact rods (606) being in the same straight line; A positioning rod, the positioning rod being mounted on one side of the driving frame (704), the positioning rod comprising a positioning plate (706) slidably disposed on one side of the driving frame (704), a first spring (710) being fixedly connected between the positioning plate (706) and the driving frame (704); The rotating mechanism comprises a rack (707), a gear ring (708), and a second pushing mechanism, wherein the second pushing mechanism is used to drive the rack (707) to move linearly.

5. The inner hole chamfer measuring device according to claim 4, characterized in that: The second pushing mechanism comprises a first screw rod (709); The first screw rod (709) is threadedly connected to one side of the fixed plate (701), the rack (707) is restricted by the fixed plate (701) and is slidably connected thereto, and the rack (707) is restricted by the end of the first screw rod (709) and is rotationally connected thereto.

6. The inner hole chamfer measuring device according to claim 1, characterized in that: The recording pen (5) comprises: A mounting tube (501) and a trace pen (505), wherein the mounting tube (501) is sleeved on one side of the linkage rod (605), a bolt (503) is threadedly connected to the mounting tube (501), and an end of the bolt (503) is in frictional contact with the mounting tube (501); A driving column (504) is limited by the mounting tube (501) and is slidably connected thereto, a second screw rod (502) is threadedly connected to the other side of the mounting tube (501), an end of the driving column (504) is limited by one end of the second screw rod (502) and is rotatably connected thereto, and the trace pen (505) is detachably mounted on one side of the driving column (504).

7. The inner hole chamfer measuring device according to claim 1, characterized in that: The paper changing assembly (8) comprises: A receiving plate (801), wherein both sides of the front end surface of the receiving plate (801) are arranged in an inverted circular structure; A driving roller (802), wherein a ratchet wheel (806) is sleeved and fixedly mounted on one side of the driving roller (802), a pawl (807) is mounted on one side of the ratchet wheel (806), the pawl (807) is snap-fitted with the ratchet wheel (806), and a third coil spring (808) is fixedly connected between the pawl (807) and the fixed surface; A paper winding roller (803), wherein a second coil spring (804) is fixedly connected between the paper winding roller (803) and the fixed surface, and the paper winding roller (803) is used to place a roll of scale paper (805).

8. The inner hole chamfer measurement method is characterized by: The method is implemented based on the inner hole chamfer measuring device according to any one of claims 1 to 7, comprising the following steps: S1, a worker rotates the first screw (709) and continuously adjusts the position of the workpiece until the positioning plate (706) fits the outer side of the inner hole of the workpiece; S2, a staff member pushes the rotating rod (903) to one side and rotates it until the mounting housing (601) and the contact rod (606) are rotated to a proper position; S3, pressing the linkage rod (605) inwardly to make the micro steel ball (608) contact the inner wall of the inner hole of the workpiece, and adjusting the trace pen (505) so that its writing end contacts the surface of the scale paper (805); S4, the staff rotates the screw (3), and as the micro steel ball (608) slides over the inner wall of the inner hole of the workpiece, the contour of the inner wall of the inner hole of the workpiece is also recorded on the scale paper (805) by the recording pen (5); S5. After reading the data from the scale on the scale paper (805), divide it by the corresponding multiple to obtain the chamfer depth.

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