Bevel gear crown length measuring device
By designing a bevel gear crown length measuring device including a measuring table, a support sleeve and an adjustable measuring bracket, the problem of inflexible measurement in the prior art is solved, and efficient and accurate measurement is achieved.
Patent Information
- Application Number
- CN202421931540.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, the measurement of bevel gear crown length requires the use of machine tools, which leads to inflexible and convenient measurement.
A bevel gear crown length measuring device is designed, including a measuring table, a support sleeve and an adjustable measuring bracket, which can be measured without using a machine tool. The support sleeve can be replaced according to the diameter of the workpiece, and the measuring bracket can be adjusted to accommodate bevel gears of different sizes.
The flexibility and applicability of bevel gear crown length measurement is achieved, avoiding the limitations of machine tools, and improving the accuracy and efficiency of measurement.
Smart Images
Figure CN222895651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bevel gear measurement, in particular to a bevel gear crown length measuring device. Background Art
[0002] Bevel gears are widely used in reducers. Due to certain errors in bevel gear manufacturing, in order to adjust the most ideal meshing area and ensure that the meshing area of the bevel gear pair is in the best position, the bevel gears need to be paired to simulate the gear meshing scenario after assembly. The accuracy of the bevel gear pair installation distance value affects the optimal position of the meshing area to a certain extent, and the crown length is a key parameter affecting the bevel gear pair installation distance; since it is difficult to directly measure the crown length, some indirect measurement methods are usually used. This method usually uses tools such as a depth gauge to measure the height (h) of a point (such as point B) on the tooth top cone surface, and then calculates the crown distance value. This method requires parameters such as the tooth surface cone angle and uses trigonometric function relationships for calculation; but this method has low measurement efficiency and large measurement errors.
[0003] In the prior art, in order to improve the detection efficiency and accuracy, a comparative measurement method is adopted. This method needs to be carried out with the help of a machine tool and a measuring fixture. A standard sample with a known wheel crown distance is made as a measurement reference, the measuring fixture and the standard sample are zeroed, and then the fixture is removed and the bevel gear blank being processed is inspected on the machine tool. The reading on the dial indicator reflects the deviation between the wheel crown distance of the measured bevel gear and the wheel crown distance of the standard sample. Whether the wheel crown distance of the measured bevel gear is qualified is determined by calculation.
[0004] The above technical solutions have improved the measurement efficiency and accuracy to a certain extent, but they require the use of machine tools for measurement, which limits the measurement site and is not flexible and convenient enough. Utility Model Content
[0005] In order to solve the technical problem in the prior art that bevel gear crown measurement with the aid of machine tools is not flexible and convenient enough, the utility model provides a bevel gear crown length measuring device, which can measure flexibly and conveniently without the use of machine tools and has a wide range of applications.
[0006] The utility model adopts the following technical solution to solve the above technical problems: a bevel gear crown length measuring device, comprising a measuring platform, one end of which is vertically provided with a mounting hole, the mounting hole is detachably provided with a support sleeve, the support sleeve is used to support the bevel gear to be measured and a standard sample, the other end of the measuring platform is provided with a measuring bracket, the measuring end of the measuring bracket is provided with a measuring piece, and the position of the measuring end can be adjusted.
[0007] The utility model provides a measuring table, and provides a support sleeve for placing the bevel gear to be measured and a measuring bracket with adjustable measuring end position on the measuring table, thereby eliminating the need for machine tool clamping, is not restricted by the measuring site, and is convenient for measurement. Moreover, the support sleeve can be replaced according to the diameter size of the workpiece without replacing the measuring table, thereby greatly improving the flexibility and applicability of the measurement.
[0008] Furthermore, the support sleeve includes a barrel portion and a flange portion, the flange portion is threadedly connected to the measuring platform, the barrel portion is arranged in the mounting hole, and the flange portion is in contact with the tooth crown of the bevel gear to be measured.
[0009] The utility model is connected with the measuring platform by arranging the flange part, which is convenient for disassembling and assembling the support sleeve on the one hand, and realizes the limiting of the support sleeve in the vertical direction on the other hand, thereby improving the measurement accuracy.
[0010] Furthermore, the mounting hole is a stepped hole, and the mounting hole comprises a matching portion and a receiving portion, the matching portion has a diameter larger than the receiving portion, and the matching portion is clearance-matched with the barrel portion.
[0011] The utility model cooperates a part of the mounting hole with the clearance of the barrel, thereby reducing the manufacturing precision of the mounting hole and reducing the processing cost, and facilitating the alignment and screw connection of the flange and the measuring platform.
[0012] Furthermore, the measuring bracket includes a supporting rod and a cross bar which are perpendicular to each other, and the measuring piece is arranged at the end of the cross bar.
[0013] Furthermore, an adjustment sleeve 1 is sleeved on the support rod, and the adjustment sleeve 1 can move up and down along the support rod and can be locked. An adjustment sleeve 2 is vertically arranged on the adjustment sleeve 1, and the adjustment sleeve 2 is sleeved on the outside of the cross bar. The adjustment sleeve 2 can move relative to the cross bar and can be locked.
[0014] The utility model arranges the crossbar to be movable horizontally and vertically through the second adjusting sleeve and the first adjusting sleeve, and can adjust the position of the measuring point according to the diameter and length of the bevel gear to be measured, and is flexible to use.
[0015] Furthermore, the measuring part adopts a dial indicator or a micrometer, and the support rod can rotate around its own axis.
[0016] The utility model uses a micrometer or a dial gauge as a measuring piece, so as to intuitively obtain the size difference between the bevel gear to be measured and the standard sample, thereby quickly judging the tooth crown length of the workpiece, and the manufacturing cost is low.
[0017] Furthermore, a limit seat is provided on the measuring platform, a through hole is vertically provided on the limit seat, the support rod is loosely matched with the through hole and extends into the cavity of the measuring platform, a limit groove is also provided on the upper surface of the limit seat, the limit groove opens upward, a limit column is horizontally provided on the support rod, the limit column can be clamped with the limit groove, a limit nut is provided at the lower part of the support rod, and a limit spring is provided between the limit nut and the limit seat.
[0018] The utility model provides a limit groove, a limit column, a limit spring and a limit nut, which can avoid interference with the measuring piece when disassembling and assembling the bevel gear to be measured. At the same time, the use of the limit spring can always keep the measuring point height of the support rod consistent during measurement, and will not increase the measurement error due to the disassembly and assembly of the gear, thereby improving the measurement accuracy.
[0019] Furthermore, the measuring element adopts a laser distance measuring sensor, and the laser distance measuring sensor is electrically connected to a display.
[0020] The utility model can obtain the measurement result more intuitively and quickly through the cooperation of the laser distance measuring sensor and the display.
[0021] Furthermore, a boss is provided on the measuring platform at the position where the limit seat is installed.
[0022] The utility model can reduce the processing area of the measuring table and reduce the manufacturing cost by arranging the boss.
[0023] It can be seen from the above technical solutions that the utility model has the following advantages:
[0024] The utility model provides a bevel gear crown length measuring device. By setting a measuring table, and arranging a support sleeve and a measuring bracket for placing the bevel gear to be measured on the measuring table, it can save the use of machine tool clamping, is not limited by the measuring site, and is convenient for measurement. In addition, the support sleeve can be replaced according to the diameter size of the workpiece without replacing the measuring table, which greatly improves the flexibility and applicability of measurement. By setting a flange part to connect with the measuring table, on the one hand, it is convenient to disassemble and assemble the support sleeve, and on the other hand, it can realize the limitation of the support sleeve in the vertical direction, thereby improving the measurement accuracy. By matching a part of the mounting hole with the clearance of the barrel part, on the one hand, the manufacturing accuracy of the mounting hole is reduced and the processing cost is reduced, and on the other hand, it is convenient to align the flange with the measuring table and screw it. By setting a cross bar that can rotate around the support bar, the measuring position can be changed, and the average value can be taken for multiple measurements, thereby improving the measurement accuracy. The crossbar is arranged to be movable horizontally and vertically by the adjustment sleeve, and the position of the measuring point can be adjusted according to the diameter and length of the bevel gear to be measured, and the use is flexible; by using a micrometer or a dial gauge as a measuring piece, it is convenient to intuitively obtain the size difference between the bevel gear to be measured and the standard sample, so as to quickly judge the tooth crown length of the workpiece, and the manufacturing cost is low; by setting a limit groove, a limit column, a limit spring and a limit nut, the dial gauge or the micrometer probe can be prevented from interfering with the measuring piece when disassembling the bevel gear to be measured, and the use of a limit spring can always keep the height of the measuring point of the support rod consistent during measurement, and the measurement error will not be increased due to the disassembly of the gear, thereby improving the measurement accuracy; the measurement result can be obtained more intuitively and quickly by cooperating with the laser distance measuring sensor and the display; by setting a boss, the processing area of the measuring table can be reduced, and the manufacturing cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 It is a structural schematic diagram of a specific implementation mode 1 of the present utility model.
[0027] Figure 2 This is a schematic diagram of the assembly structure of a specific implementation mode 1 of the utility model and a standard sample.
[0028] Figure 3 It is a schematic diagram of the assembly structure of the first specific implementation mode of the utility model and the bevel gear to be tested.
[0029] Figure 4 It is a structural schematic diagram of the support sleeve in the first specific implementation mode of the utility model.
[0030] Figure 5 It is a structural schematic diagram of a limit seat in a specific implementation mode 1 of the utility model.
[0031] Figure 6 It is a schematic structural diagram of a measuring platform in a specific implementation mode 1 of the present utility model.
[0032] Figure 7 It is a structural schematic diagram of an adjustment sleeve 1 in a specific implementation mode 1 of the utility model.
[0033] Figure 8 This is a schematic structural diagram of a second specific implementation mode of the present invention.
[0034] In the figure, 1, measuring table; 2, mounting hole; 201, matching part; 202, accommodating part; 203, positioning hole; 3, supporting sleeve; 301, flange part; 302, cylinder part; 4, limiting seat; 401, limiting groove; 402, through hole; 5, limiting column; 6, supporting rod; 7, limiting spring; 8, limiting nut; 10, mounting clamp; 11, dial indicator; 12, cross bar; 13, adjusting sleeve one; 14, adjusting sleeve two; 15, standard sample; 16, bevel gear to be measured; 17, display; 18, laser ranging sensor; 19, bearing; 20, locking bolt; 21, shrinkage groove. DETAILED DESCRIPTION
[0035] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. Specific implementation method 1
[0037] like Figures 1 to 3 As shown, this specific embodiment provides a bevel gear crown length measuring device, including a measuring platform 1, a measuring bracket, a measuring piece and a support sleeve 3; a mounting hole 2 is vertically provided at one end of the measuring platform 1, and a support sleeve 3 is detachably provided in the mounting hole 2, and the support sleeve 3 is used to support the bevel gear 16 to be measured and the standard sample 15, and a measuring piece is provided at the measuring end of the measuring bracket, and the position of the measuring end can be adjusted.
[0038] In this specific embodiment, a measuring table 1 is provided, and a support sleeve 3 for placing the bevel gear 16 to be measured and a measuring bracket with an adjustable measuring end position are provided on the measuring table 1. This can save the use of machine tool clamping, is not limited by the measuring site, and is convenient for measurement. In addition, the support sleeve 3 can be replaced according to the diameter size of the workpiece to ensure that the support sleeve 3 supports the bevel gear 16 to be measured without replacing the measuring table 1, thereby greatly improving the flexibility and applicability of the measurement.
[0039] like Figures 1 to 4 As shown, in order to facilitate the disassembly and assembly of the support sleeve 3, in the present specific embodiment, the support sleeve 3 includes a barrel portion 302 and a flange portion 301, the flange portion 301 is threadedly connected to the measuring platform 1, the barrel portion 302 is arranged in the mounting hole 2, and the flange portion 301 is in contact with the tooth crown of the bevel gear 16 to be measured; preferably, the mounting hole 2 is a stepped hole, the mounting hole 2 includes a matching portion 201 and an accommodating portion 202, the matching portion 201 has a larger diameter than the accommodating portion 202, and the matching portion 201 is clearance-matched with the barrel portion 302. By clearance-matching a part of the mounting hole 2 with the barrel portion 302, on the one hand, the manufacturing accuracy of the mounting hole 2 is reduced and the processing cost is reduced, and on the other hand, it is convenient to align the flange with the measuring platform 1 and thread it.
[0040] like Figure 1 and Figure 7 As shown, in order to facilitate the flexible adjustment of the position of the measuring end, in this specific embodiment, the measuring bracket can adopt the following specific structure: the measuring bracket includes a vertically arranged support rod 6 and a cross bar 12, the end of the cross bar 12 is provided with a mounting clamp 10, and the mounting clamp 10 is installed with a measuring piece, the support rod 6 is provided with an adjustment sleeve 13, the adjustment sleeve 13 can be moved up and down along the support rod 6 and can be locked, the adjustment sleeve 13 is vertically and welded with an adjustment sleeve 2 14, the adjustment sleeve 2 14 is sleeved on the outside of the cross bar 12, and the adjustment sleeve 13 is provided with a plurality of adjustment sleeves 14, and the adjustment sleeve 14 is provided on the outside of the cross bar 12. The first adjusting sleeve 13 and the second adjusting sleeve 14 can move relative to the cross bar 12 and can be locked. As a preferred embodiment, the adjustment sleeve 13 and the second adjusting sleeve 14 are both provided with a contraction groove 21 along their axial direction, and the contraction groove 21 passes through a locking bolt 20. When adjustment is needed, the adjusting bolt is loosened, and the contraction groove 21 rebounds, so that a gap is generated between the corresponding adjustment sleeve and the corresponding rod, so that adjustment can be achieved. When positioning, the locking bolt 20 is tightened, the contraction groove 21 is tightened, and the corresponding adjustment sleeve is tightly clamped on the corresponding rod. The adjustment sleeve 13 and the second adjusting sleeve 14 are both made of spring steel.
[0041] like Figure 1 , Figure 5 and Figure 6As shown, in the present specific embodiment, the measuring part adopts a dial indicator 11 or a micrometer. In the present specific embodiment, the dial indicator 11 is adopted, which can accurately measure, has low cost and is easy to maintain. In order to facilitate the disassembly and assembly of the bevel gear 16 to be measured, in the present specific embodiment, the support rod 6 can rotate around its own axis. As a preferred embodiment, the measuring platform 1 is connected to the limit seat 4 by bolts, and the limit seat 4 is in a Chinese-character shape. The boss at the lower part of the limit seat 4 extends into the positioning hole 203 of the measuring platform 1 and is clearance-fitted. The flange of the limit seat 4 is provided with a mounting hole, which is penetrated by a bolt. The limit seat 4 is vertically provided with a through hole 402. The support rod 6 is clearance-fitted with the through hole 402 and extends into the cavity of the measuring platform 1. The upper surface of the limit seat 4 is also provided with a limit groove 401. In the present specific embodiment, the limit groove 401 is a V-shaped groove, and the limit groove 401 opens upward. A limit column is horizontally provided on the support rod 6. 5. The limiting column 5 can be engaged with the limiting groove 401, and a limiting nut 8 is arranged at the lower part of the support rod 6. A limiting spring 7 is arranged between the limiting nut 8 and the limiting seat 4. In the present specific embodiment, a boss is arranged coaxially with the through hole 402 in the limiting seat 4 for abutting against the limiting spring 7. When disassembling and assembling the bevel gear 16 to be measured, the support rod 6 can be pulled upward, and the limiting groove 401 no longer plays a limiting role. At the same time, the limiting spring 7 is compressed, and the support rod 6 is rotated to drive the cross bar 12 to rotate to one side of the mounting hole 2, leaving space for disassembly and assembly. After the workpiece is placed, the support rod 6 is rotated and then released, and the micrometer or dial gauge 11 returns to the measuring position from the vertical direction, effectively avoiding the interference between the dial gauge 11 or the micrometer probe and the bevel gear 16 to be measured. As a preferred embodiment, a boss is arranged at the position where the limiting seat 4 is installed on the measuring table 1. By arranging the boss, the processing area of the measuring table 1 can be reduced, thereby reducing the manufacturing cost.
[0042] The working process of the bevel gear crown length measuring device is as follows:
[0043] According to the size of the bevel gear 16 to be tested, select the support sleeve 3, install the corresponding standard sample 15, adjust the height of the cross bar 12 and the length of the extended support rod 6. When the probe contacts the standard sample 15, adjust the dial indicator 11 to indicate zero position, pull up and rotate the support rod 6, turn the dial indicator 11 or the micrometer to one side, install the bevel gear 16 to be tested, pull up and rotate the support rod 6 in the opposite direction until the probe contacts the upper surface of the crown of the bevel gear 16 to be tested, read the dial indication at this time, that is, the difference between the bevel gear and the standard sample 15, and calculate the crown length of the bevel gear. Specific implementation method 2
[0045] like Figure 8As shown, the structure of this specific embodiment is basically the same as that of the specific embodiment 1, and the difference is that: the measuring part adopts a laser distance sensor 18, and the laser distance sensor 18 is electrically connected to a display 17, and the display 17 includes a calculation module, which can display the crown length of the bevel gear 16 to be measured. This specific embodiment can obtain the measurement result more intuitively and quickly through the cooperation of the laser distance sensor 18 and the display 17.
[0046] like Figure 8 As shown, the difference from the specific implementation mode one is that, in this specific implementation mode, non-contact measurement is achieved by the laser ranging sensor 18, and the laser ranging sensor 18 can be installed at a higher position, that is, the height position of the cross bar 12 is higher than that of the dial indicator 11, and there is no problem of interference with the bevel gear 16 to be measured. The support rod 6 can be directly welded to the measuring table 1 or rotatably connected through the bearing 19. In this specific implementation mode, it can be rotatably connected through the bearing 19.
[0047] The working process of the bevel gear crown length measuring device is as follows:
[0048] According to the size of the bevel gear 16 to be tested, select the support sleeve 3, install the corresponding standard sample 15 (the standard crown length is L0), adjust the height of the cross bar 12 and the length of the extended support rod 6 to ensure sufficient installation space, and after installing the standard sample 15, turn on the laser ranging sensor 18 and the display 17, and the calculation module stores the detected distance (L1); replace the bevel gear 16 to be tested, detect the size (L2) again, and the calculation module calculates the crown length L of the gear according to the formula (L=L1-L2+L0).
[0049] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:
[0050] 1. By setting up a measuring table 1, and arranging a support sleeve 3 for placing the bevel gear 16 to be measured and a measuring bracket on the measuring table 1, it is possible to save the need for machine tool clamping, is not limited by the measuring site, and is convenient for measurement. In addition, the support sleeve 3 can be replaced according to the diameter size of the workpiece without replacing the measuring table 1, which greatly improves the flexibility and applicability of the measurement;
[0051] 2. By providing the flange part 301 to be connected with the measuring platform 1, on the one hand, it is convenient to disassemble and assemble the support sleeve 3, and on the other hand, the support sleeve 3 is limited in the vertical direction, thereby improving the measurement accuracy;
[0052] 3. By making a part of the mounting hole 2 and the barrel 302 fit with each other, the manufacturing accuracy of the mounting hole 2 is reduced and the processing cost is reduced. On the other hand, it is convenient to align and screw the flange with the measuring platform 1;
[0053] 4. The crossbar 12 is set to be movable horizontally and vertically by adjusting the second sleeve 14 and the first sleeve 13, and the measuring point position can be adjusted according to the diameter and length of the bevel gear 16 to be measured, which is flexible to use;
[0054] 5. By using a micrometer or dial gauge 11 as a measuring piece, it is convenient to intuitively obtain the size difference between the bevel gear 16 to be measured and the standard sample 15, so as to quickly determine the crown length of the workpiece, and the manufacturing cost is low;
[0055] 6. By providing the limit groove 401, the limit column 5, the limit spring 7 and the limit nut 8, sufficient disassembly and assembly space can be reserved when disassembling and assembling the bevel gear 16 to be measured, so as to avoid interference between the dial gauge 11 or the micrometer probe and the measuring piece;
[0056] 7. The laser distance sensor 18 and the display 17 cooperate to obtain the measurement results more intuitively and quickly.
[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A bevel gear crown length measuring device, comprising a measuring platform (1), characterized in that: A mounting hole (2) is vertically arranged at one end of the measuring platform (1), and a support sleeve (3) is detachably arranged in the mounting hole (2). The support sleeve (3) is used to support the bevel gear (16) to be measured and the standard sample (15). A measuring bracket is arranged at the other end of the measuring platform (1), and a measuring piece is arranged at the measuring end of the measuring bracket, and the position of the measuring end can be adjusted.
2. The bevel gear crown length measuring device according to claim 1, characterized in that: The support sleeve (3) comprises a barrel (302) and a flange (301), wherein the flange (301) is threadedly connected to the measuring platform (1), the barrel (302) is arranged in the mounting hole (2), and the flange (301) is in contact with a tooth crown of the bevel gear (16) to be measured.
3. The bevel gear crown length measuring device according to claim 2, characterized in that: The mounting hole (2) is a stepped hole, and comprises a matching portion (201) and a receiving portion (202); the matching portion (201) has a larger diameter than the receiving portion (202); and the matching portion (201) is clearance-matched with the barrel portion (302).
4. The bevel gear crown length measuring device according to claim 3, characterized in that: The measuring bracket comprises a supporting rod (6) and a cross rod (12) which are perpendicular to each other, and the measuring piece is arranged at the end of the cross rod (12).
5. The bevel gear crown length measuring device according to claim 4, characterized in that: The support rod (6) is provided with an adjustment sleeve (13), the adjustment sleeve (13) can move up and down along the support rod (6) and can be locked, the adjustment sleeve (13) is vertically provided with an adjustment sleeve (14), the adjustment sleeve (14) is sleeved on the outside of the cross bar (12), the adjustment sleeve (14) can move relative to the cross bar (12) and can be locked.
6. The bevel gear crown length measuring device according to claim 5, characterized in that: The first adjustment sleeve (13) and the second adjustment sleeve (14) are both provided with a contraction groove (21) along their axial direction, and a locking bolt (20) penetrates through the contraction groove (21).
7. The bevel gear crown length measuring device according to any one of claims 4 to 6, characterized in that: The measuring piece is a dial gauge (11) or a micrometer, and the support rod (6) is capable of rotating around its own axis.
8. The bevel gear crown length measuring device according to claim 7, characterized in that: A limit seat (4) is arranged on the measuring platform (1), a through hole (402) is vertically arranged on the limit seat (4), the support rod (6) is clearance-matched with the through hole (402) and extends into the cavity of the measuring platform (1), a limit groove (401) is also arranged on the upper surface of the limit seat (4), the limit groove (401) opens upward, a limit column (5) is horizontally arranged on the support rod (6), the limit column (5) can be clamped with the limit groove (401), a limit nut (8) is arranged at the lower part of the support rod (6), and a limit spring (7) is arranged between the limit nut (8) and the limit seat (4).
9. The bevel gear crown length measuring device according to any one of claims 1 to 6, characterized in that: The measuring element adopts a laser distance measuring sensor (18), and the laser distance measuring sensor (18) is electrically connected to a display (17).
10. The bevel gear crown length measuring device according to claim 8, characterized in that: A boss is provided on the measuring platform (1) at the position where the limiting seat (4) is installed.