Automatic height measuring assembly and automatic height measuring device thereof for gear grinding of thinning machine

Abstract

The utility model discloses an automatic height measuring assembly and an automatic height measuring device used for gear grinding of a thinning machine, and relates to the technical field of gear grinding height measurement, and the automatic height measuring device used for gear grinding of the thinning machine comprises a four-connecting-rod mechanism, one side of the four-connecting-rod mechanism is used for being connected with a power assembly; the pressure head is used for being in contact with the grinding wheel and is arranged at the top of the other side of the four-bar mechanism; the mounting seat is arranged at the bottom of the other side of the four-bar mechanism; the sensor is vertically arranged on the mounting base, and a measuring head of the sensor is used for being in contact with a CT workbench; elastic arms are arranged at the top and the bottom of the four-connecting-rod mechanism and used for deforming when the elastic arms are subjected to downward pressure of the grinding wheel, the four-connecting-rod mechanism is provided with reset pieces in the vertical direction so that the elastic arms can reset when the downward pressure is removed, and the four-connecting-rod mechanism is distributed in a first parallelogram shape in the initial state. The four-bar mechanism is distributed in a second parallelogram shape when deformed. The gear grinding height measuring device can effectively improve the efficiency and the measuring precision of gear grinding height measuring operation.

Description

Technical Field

[0001] The utility model relates to the technical field of gear grinding height measurement, and more specifically, to an automatic height measurement device for thinning machine gear grinding. In addition, it also relates to an automatic height measurement component including the automatic height measurement device for thinning machine gear grinding. Background Art

[0002] During the use of the wafer thinning machine, it is necessary to regularly check the height of the grinding teeth on the grinding wheel on the spindle, as well as the height of the grinding teeth from the CT workbench to ensure the normal operation of the wafer thinning machine. At present, the commonly used method of measuring the height of the grinding teeth is manual height measurement. For example, it is necessary to make a standard block gauge, which consists of a through gauge and a stop gauge (the through gauge is qualified if it passes the stop gauge but not the go gauge). The height difference of the go and stop gauges is processed according to the precision requirements. The processed block gauge is measured with a high-precision measuring tool to measure the height of the go gauge and the stop gauge, and recorded as m and n respectively. The specific height measurement steps are to lower the spindle to a certain height from the CT workbench and use the block gauge for measurement. When the through gauge of the block gauge can pass and the stop gauge cannot pass, the measurement is completed. At this time, the distance of the grinding teeth from the CT workbench is m.

[0003] However, this manual height measurement method requires human intervention, which can introduce measurement errors due to inconsistent judgment standards. Furthermore, the block gauge consists of a go gauge and a stop gauge. The go gauge is typically 20μm lower than the stop gauge, and this 20μm height difference introduces measurement errors. Furthermore, manual height measurement requires multiple passes of the go and stop gauge to measure the clearance between the grinding gear and the worktable to achieve a good measurement result, resulting in low operational efficiency.

[0004] In summary, how to improve the efficiency and measurement accuracy of gear grinding height measurement operations is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide an automatic height measuring device for thinning machine gear grinding, which can effectively improve the efficiency and measurement accuracy of gear grinding height measurement operations.

[0006] Another object of the present utility model is to provide an automatic height measuring assembly comprising the above-mentioned automatic height measuring device for thinning machine gear grinding.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] An automatic height measuring device for thinning machine gear grinding, comprising:

[0009] A four-bar linkage, one side of which is used to connect to a power assembly so as to move in space under the drive of the power assembly;

[0010] A pressure head, which is used to contact the grinding wheel, and the pressure head is arranged on the top of the other side of the four-bar linkage;

[0011] A mounting seat, which is provided at the bottom of the other side of the four-bar linkage;

[0012] a sensor vertically disposed on the mounting base, wherein the measuring head of the sensor is configured to contact the CT workbench;

[0013] Elastic arms are provided at the top and bottom of the four-bar linkage, and the elastic arms are used to deform when subjected to the downward pressure of the grinding wheel. The four-bar linkage is provided with a reset member in the vertical direction to reset the elastic arms when the downward pressure is withdrawn. The four-bar linkage is initially distributed in a first parallelogram, and one side of the four-bar linkage provided with the mounting seat is flush with or higher than the other side. When the four-bar linkage is deformed, it is distributed in a second parallelogram, and one side of the four-bar linkage provided with the mounting seat is lower than the other side.

[0014] In one embodiment, the four-bar linkage includes a left mounting plate, a right mounting plate arranged opposite to the left mounting plate, an intermediate positioning plate, an intermediate fixing plate, and a pressure plate; the elastic arm includes an elastically deformable hinge plate; the intermediate positioning plate, the hinge plate, and the intermediate fixing plate are stacked and connected in sequence; the lengths of the intermediate positioning plate and the intermediate fixing plate are both equal to the distance between the left mounting plate and the right mounting plate; and the length of the hinge plate is greater than the length of the intermediate positioning plate;

[0015] The pressure plate, the left end of the hinge plate and the top of the left mounting plate are connected in sequence, the pressure plate, the left end of the hinge plate and the bottom of the left mounting plate are connected in sequence, the pressure head, the right end of the hinge plate and the top of the right mounting plate are connected in sequence, the pressure plate, the mounting seat, the right end of the hinge plate and the bottom of the right mounting plate are connected in sequence.

[0016] In one embodiment, screws pass through the intermediate fixing plate and the hinge plate and are fixed to the intermediate positioning plate.

[0017] In one embodiment, a guide block is provided on one side of the left mounting block, a limit piece is horizontally provided at one end of the guide block away from the left mounting block, the right mounting plate is provided with a slide groove, and an end of the limit piece is inserted into the slide groove;

[0018] A guide hole is vertically provided in the guide block, and the reset member is provided in the guide hole. The reset member includes a compression spring, and the elastic end of the compression spring is in contact with the middle positioning plate.

[0019] In one embodiment, at least two guide holes are provided in the guide block, and the guide holes are provided at one end close to the right mounting plate.

[0020] In one embodiment, a pressure head fixing block, a steel ball, and a positioning plate for supporting the pressure head are provided on the top of the right mounting plate. The positioning plate is used to position the steel ball on the pressure head fixing block. The wiring harness of the sensor is led out from the pressure head fixing block and the side of the pressure head.

[0021] The pressure head is movably connected to the pressure head fixing block through the steel ball. The top of the pressure head is provided with a plane for being distributed parallel to the end face of the grinding wheel, and the center of the pressure head, the center of the steel ball and the detection point of the sensor are located on the same straight line.

[0022] In one embodiment, the indenter comprises an alumina ceramic member.

[0023] In one embodiment, a protective sleeve is provided at the bottom of the mounting seat, and the protective sleeve is sleeved on the bottom periphery of the sensor.

[0024] In one embodiment, a limit block is provided on the top of the mounting seat, and the limit block is sleeved on the top periphery of the sensor.

[0025] An automatic height measurement component comprises: a power component, an automatic height measurement device for thinning machine gear grinding as described in any one of the above items, and a control device, one side of the four-bar linkage mechanism of the automatic height measurement device for thinning machine gear grinding is connected to the power component, and the power component and the sensor of the automatic height measurement device for thinning machine gear grinding are both connected to the control device.

[0026] When using the automatic height measurement device for a thinning machine gear grinding machine provided by the present invention, the four-bar linkage, driven by the power assembly, rotates from the escape position (i.e., the sensor is not between the grinding wheel and the CT table) to the operating position (i.e., the sensor is between the grinding wheel and the CT table). The grinding wheel is then controlled to descend vertically until it contacts the indenter, applying downward pressure to the indenter. This downward pressure is applied to the indenter, and the elastic deformation of the elastic arm causes the indenter to move vertically downward on one side of the four-bar linkage. The elastic arm deforms under the downward pressure of the grinding wheel, causing the four-bar linkage to transform from a first parallelogram configuration to a second parallelogram configuration. This facilitates the movement of the sensor into contact with the CT table under the action of the grinding wheel, thereby determining the Z-axis coordinate position. After multiple measurements, the Z-axis coordinate repeatability (relative position difference) is considered acceptable, completing the height measurement operation. This process of multiple measurements helps improve the accuracy of the height measurement operation. Furthermore, this device automates height measurement, eliminating the need for repeated manual measurements, ensuring measurement accuracy and reducing operational effort.

[0027] Furthermore, the device's four-bar linkage ensures that the sensor's measuring head always points vertically downward, perpendicular to the measuring surface. After bending under measurement force, the elastic arm, under the action of a reset element, returns to its pre-measurement state, ready for the next measurement. Furthermore, because the four-bar linkage is designed based on the principle of a planar four-bar linkage, the deformation process transforms from a first parallelogram structure to a second parallelogram structure. The distance the pressure head moves vertically downward after being pressed is equal to the distance the sensor's detection head moves downward after being pressed, facilitating accurate control of the sensor's movement.

[0028] In summary, the automatic height measurement device for thinning machine gear grinding provided by the utility model can effectively improve the efficiency and measurement accuracy of the gear grinding height measurement operation.

[0029] In addition, the utility model provides an automatic height measurement component including the above-mentioned automatic height measurement device for thinning machine gear grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the structure of the automatic height measuring device for thinning machine gear grinding provided by the utility model when it is in the escape position;

[0032] Figure 2 This is a structural diagram of the automatic height measurement device for the gear grinding of the thinning machine when it is driven by the power component to rotate to the working position;

[0033] Figure 3 This is a schematic diagram of the structure of the sensor before height measurement for the automatic height measurement device of the thinning machine gear grinding;

[0034] Figure 4 This is a schematic diagram of the structure of the sensor used in the automatic height measurement device for thinning machine gear grinding when measuring height;

[0035] Figure 5 This is a top view of the automatic height measurement device for thinning machine gear grinding;

[0036] Figure 6 for Figure 5 AA cross-section of

[0037] Figure 7 Exploded diagram of the four-bar linkage, mounting base, and press head fixing block.

[0038] Reference numerals:

[0039] 1-Left mounting plate; 2-Middle positioning plate; 3-Middle fixing plate; 4-Hinge plate; 5-Pressure plate; 6-Right mounting plate; 7-Mounting seat; 8-Indenter fixing block; 9-Guide block; 10-Indenter; 11-Steel ball; 12-Positioning plate; 13-Four-bar linkage; 14-Power assembly; 15-Grinding wheel; 16-Protective cover; 17-Limit block; 18-Sensor; 19-Compression spring; 20-Limiter; 21-CT workbench; 22-Screw; 23-Guide hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] The core of the present invention is to provide an automatic height measuring device for thinning machine gear grinding, which can effectively improve the efficiency and measurement accuracy of gear grinding height measurement operation. Another core of the present invention is to provide an automatic height measuring assembly including the above automatic height measuring device for thinning machine gear grinding.

[0042] Please refer to Figures 1 to 7 .

[0043] This specific embodiment provides an automatic height measurement device for thinning machine gear grinding, comprising:

[0044] A four-bar linkage 13, one side of which is used to connect to the power assembly 14 so as to move in space under the drive of the power assembly 14;

[0045] The pressure head 10 is used to contact the grinding wheel 15 and is arranged on the top of the other side of the four-bar linkage 13;

[0046] A mounting base 7, which is provided at the bottom of the other side of the four-bar linkage 13;

[0047] A sensor 18 is vertically mounted on the mounting base 7 , and a measuring head of the sensor 18 is configured to contact the CT workbench 21 ;

[0048] Elastic arms are provided at the top and bottom of the four-bar linkage 13, and the elastic arms are used to deform when subjected to the downward pressure of the grinding wheel 15, and the four-bar linkage 13 is provided with a reset member in the vertical direction to reset the elastic arms when the downward pressure is withdrawn. The four-bar linkage 13 is initially distributed in a first parallelogram, and one side of the four-bar linkage 13 with the mounting seat 7 is flush with or higher than the other side. When the four-bar linkage 13 is deformed, it is distributed in a second parallelogram, and the one side of the four-bar linkage 13 with the mounting seat 7 is lower than the other side.

[0049] It should be noted that the four-bar linkage 13 is initially arranged in a first parallelogram-shaped rectangular configuration, and the side of the four-bar linkage 13 with the mounting seat 7 is flush with or higher than the other side. This means that a reset member is provided below the top of the four-bar linkage 13. When the reset member lifts the top of the four-bar linkage 13 in the initial state, the top and bottom of the four-bar linkage 13 and the side with the mounting seat 7 are raised relative to the fixed side of the four-bar linkage 13 for connection to the power assembly 14, causing the four-bar linkage 13 to be arranged in the first parallelogram-shaped configuration. When the reset member does not lift the top of the four-bar linkage 13 in the initial state, the first parallelogram is a rectangle. When the four-bar linkage 13 is deformed, it is arranged in a second parallelogram-shaped configuration, and the side of the four-bar linkage 13 with the mounting seat 7 is lower than the other side. This means that during use, the pressure head 10 moves downward under the downward pressure of the grinding wheel 15, causing the elastic arm to deform. At this time, the top and bottom of the four-bar linkage 13 and the side with the mounting seat 7 move downward relative to the fixed side, forming a second parallelogram-shaped configuration.

[0050] It should also be noted that sensor 18 can be a contact-type pressure sensor. When the detection head of sensor 18 contacts the surface of the CT table 21 used to place the wafer, sensor 18 triggers a signal. Mounting seat 7 serves to securely clamp sensor 18, helping to ensure smooth detection by sensor 18. Furthermore, to improve the height measurement accuracy of this device, a sensor 18 with higher measurement accuracy can be selected. During the actual detection process, multiple measurements are required (i.e., the Z-axis coordinate repeatability is considered acceptable only when it meets the requirements after multiple measurements). The repeatability accuracy can be set at 0.5 μm to improve detection accuracy and eliminate errors caused by human operation.

[0051] During actual use, the shape, structure, size, material, type, etc. of the four-bar linkage 13, the pressure head 10, the mounting seat 7 and the sensor 18 can be determined according to actual conditions and actual needs.

[0052] When using the automatic height measurement device for a thinning machine gear grinding machine provided by the present invention, the four-bar linkage 13, driven by the power assembly 14, rotates from the escape position (i.e., sensor 18 is not between the grinding wheel 15 and the CT table 21) to the operating position (i.e., sensor 18 is between the grinding wheel 15 and the CT table 21). The grinding wheel 15 is then controlled to vertically descend until it contacts the indenter 10, applying downward pressure to the indenter 10. In other words, the indenter 10 is subjected to a vertical downward pressure, and the elastic deformation of the elastic arm causes the indenter 10 to move vertically downward on one side of the four-bar linkage 13. At this point, the elastic arm deforms under the downward pressure of the grinding wheel 15, causing the four-bar linkage 13 to transform from a first parallelogram configuration to a second parallelogram configuration. This facilitates the movement of the sensor 18 under the action of the grinding wheel 15 until it contacts the CT table 21, thereby determining the Z-axis coordinate position. After multiple measurements, the Z-axis coordinate repeatability (relative position difference) is considered qualified when it meets the use requirements, completing the height measurement operation. The multiple measurement process helps improve the accuracy of the height measurement operation. In addition, this device can realize automatic height measurement operation, eliminating the need for manual repeated measurements, thereby ensuring measurement accuracy and reducing operation intensity.

[0053] Furthermore, the four-bar linkage 13 of this device ensures that the measuring head of the sensor 18 is always vertically downward and perpendicular to the measuring surface. After the elastic arm bends under the force of measurement, it returns to its pre-measurement state under the action of the reset member, ready for the next measurement. In addition, because the four-bar linkage 13 is designed based on the principle of a planar four-bar linkage, the deformation process is the transformation from a first parallelogram structure to a second parallelogram structure. The distance that the pressure head 10 moves vertically downward after being pressed is equal to the distance that the detection head of the sensor 18 moves downward after being pressed, which facilitates accurate control of the movement of the sensor 18.

[0054] In summary, the automatic height measurement device for thinning machine gear grinding provided by the utility model can effectively improve the efficiency and measurement accuracy of the gear grinding height measurement operation.

[0055] In one embodiment, Figure 6 、 7 As shown, the four-bar linkage 13 includes a left mounting plate 1, a right mounting plate 6 arranged opposite to the left mounting plate 1, an intermediate positioning plate 2, an intermediate fixing plate 3 and a pressure plate 5. The elastic arm includes an elastically deformable hinge plate 4. The intermediate positioning plate 2, the hinge plate 4 and the intermediate fixing plate 3 are stacked and connected in sequence. The length of the intermediate positioning plate 2 and the intermediate fixing plate 3 are both the spacing between the left mounting plate 1 and the right mounting plate 6. The length of the hinge plate 4 is greater than the length of the intermediate positioning plate 2.

[0056] The pressure plate 5, the left end of the hinge plate 4 and the top of the left mounting plate 1 are connected in sequence, the pressure plate 5, the left end of the hinge plate 4 and the bottom of the left mounting plate 1 are connected in sequence, the pressure head 10, the right end of the hinge plate 4 and the top of the right mounting plate 6 are connected in sequence, the pressure plate 5, the mounting seat 7, the right end of the hinge plate 4 and the bottom of the right mounting plate 6 are connected in sequence, so that the deformed four-bar linkage 13 (parallelogram structure) can ensure that the detection head of the sensor 18 is always vertically downward and perpendicular to the measuring surface (the table top of the CT workbench 21), and the hinge plate 4 can return to the state before measurement after the downward pressure is withdrawn, ready for the next measurement.

[0057] It should be noted that the left mounting plate 1 is the fixed end, fixed to the power assembly 14 (e.g., a swing cylinder) by screws 22. The pressure plate 5 fixes the hinge plate 4 to the left mounting plate 1 and the right mounting plate 6. The screws 22 pass through the intermediate fixing plate 3 and the hinge plate 4 and are fixed to the intermediate positioning plate 2. The intermediate fixing plate 3 and the intermediate positioning plate 2 clamp the hinge plate 4 in the middle, and the clamping areas of the three are linked. The right mounting plate 6 is the measuring end, and the pressure head 10 and the mounting seat 7 are installed on the right mounting plate 6. When the grinding wheel 15 presses the pressure head 10 downward, the pressure head 10 is subjected to vertical downward pressure. Under the elastic deformation of the hinge plate 4, the pressure head 10 drives the right mounting plate 6, the mounting seat 7, and the sensor 18 to move vertically downward, so that the sensor 18 contacts the CT workbench 21 for detection operation.

[0058] In one embodiment, the screw 22 passes through the intermediate fixing plate 3 and the hinge plate 4 and is fixed on the intermediate positioning plate 2 to ensure that the intermediate fixing plate 3 and the intermediate positioning plate 2 clamp the hinge plate 4, and the clamped part of the hinge plate 4 does not deform, and only the unclamped part of the hinge plate 4 can be deformed under force, so that the four-bar linkage 13 is distributed in a parallelogram when deformed, so that the distance that the pressure head 10 moves vertically downward under force is equal to the distance that the detection head of the sensor 18 moves downward under force.

[0059] In one embodiment, Figure 6 and Figure 7 As shown, a guide block 9 is provided on one side of the left mounting block 1, and a limit piece 20 is horizontally provided at the end of the guide block 9 away from the left mounting block 1, and a slide groove is provided on the right mounting plate 6, and the end of the limit piece 20 is inserted into the slide groove; a guide hole 23 is vertically provided in the guide block 9, and a reset piece is provided in the guide hole 23, and the reset piece includes a compression spring 19, and the elastic end of the compression spring 19 is in contact with the middle positioning plate 2.

[0060] It should be noted that a compression spring 19 is installed between the intermediate positioning plate 2 and the guide block 9. Compression spring 19 is compressed and mounted within guide hole 23 of the guide block 9, which is fixed to the left mounting block 1. Compression spring 19 is used to elastically reset hinge plate 4 after downward pressure is removed, raising the detection head of sensor 18 by a predetermined distance to prevent collision with the CT table 21 during its swinging motion.

[0061] Moreover, in order to protect the hinge plate 4, a limit member 20 (such as a limit screw) is designed at the end of the guide block 9. The limit member 20 is fixed to the right side surface of the guide block 9, and the end of the guide block 9 moves up and down in the slide groove of the right mounting plate 6, so that the two hinge plates 4 move within a certain range up and down, avoiding irreversible deformation of the hinge plates 4 due to misoperation.

[0062] In one embodiment, at least two guide holes 23 are provided in the guide block 9, and the guide hole 23 is provided at one end close to the right mounting plate 6, and the structure is as follows: Figure 6 As shown, the elastic force of the compression spring 19 on the hinge plate 4 is increased to ensure that the hinge plate 4 can return to its original state after deformation. Moreover, arranging the compression spring 19 close to the right mounting plate 6 is also more conducive to resetting the hinge plate 4.

[0063] In one embodiment, the top of the right mounting plate 6 is provided with a pressure head fixing block 8, a steel ball 11 and a positioning plate 12 for supporting the pressure head 10. The positioning plate 12 is used to position the steel ball 11 on the pressure head fixing block 8, and the wiring harness of the sensor 18 is led out from the sides of the pressure head fixing block 8 and the pressure head 10; the pressure head 10 is movably connected to the pressure head fixing block 8 through the steel ball 11, and the top of the pressure head 10 is provided with a plane for being distributed parallel to the end face of the grinding wheel 15, and the center of the pressure head 10, the center of the steel ball 11 and the detection point of the sensor 18 are located on the same straight line.

[0064] It should be noted that the indenter 10 is designed to be movable, considering the contact between the grinding tooth end face of the grinding wheel 15 and the indenter 10. Most grinding teeth are arranged separately and spaced apart on the grinding wheel 15. Due to factors such as installation precision, the actual contact between the indenter 10 and the grinding tooth end face cannot be guaranteed to be surface contact. Therefore, the indenter 10 is designed to be movable. Once the grinding tooth end face contacts the indenter 10, the indenter 10 automatically maintains parallel contact with the grinding tooth end face as the grinding wheel 15 presses downward.

[0065] It should also be noted that the indenter 10 is designed as a movable structure with the help of the steel ball 11. Every time the indenter 10 moves vertically downward as the grinding wheel 15 presses down, the end face of the indenter 10 always remains parallel to the end face of the grinding tooth, and the center of the indenter 10, the center of the steel ball 11 and the detection point of the sensor 18 remain on the same straight line, that is, the distance between the end face of the indenter 10 and the detection point of the sensor 18 is always a constant, thereby ensuring both measurement accuracy and surface contact between the end face of the grinding tooth and the end face of the indenter 10, so that the force area of ​​the indenter 10 is larger, and it can move downward better under the action of the grinding wheel 15.

[0066] In one embodiment, the pressing head 10 includes an alumina ceramic member to ensure the rigidity and wear resistance of the pressing head 10 , which helps to ensure a good service life and use effect.

[0067] In one embodiment, a protective cover 16 is provided at the bottom of the mounting base 7 and is mounted on the outer periphery of the bottom of the sensor 18. The protective cover 16 protects the non-detection head portion of the bottom plate of the sensor 18, preventing the sensor 18 from easily colliding with other components and being damaged during the downward movement. The detection head of the sensor 18 can pass through the protective cover 16 and contact the CT workbench 21.

[0068] In one embodiment, a limit block 17 is provided on the top of the mounting base 7, and the limit block 17 is mounted on the top periphery of the sensor 18. The limit block 17 can limit the position of the sensor 18, preventing the sensor 18 from moving as the pressure head 10 moves downward. This helps to ensure that the vertical downward movement distance of the pressure head 10 after being subjected to downward pressure is equal to the downward movement distance of the detection head of the sensor 18 after being subjected to pressure.

[0069] In addition to the aforementioned automatic height measurement device for thinning machine gear grinding, the present invention further provides an automatic height measurement assembly including the automatic height measurement device for thinning machine gear grinding disclosed in the aforementioned embodiment. The automatic height measurement assembly further includes a power assembly 14 and a control device. One side of the four-bar linkage 13 of the automatic height measurement device for thinning machine gear grinding is connected to the power assembly 14. The power assembly 14 and the sensor 18 of the automatic height measurement device for thinning machine gear grinding are both connected to the control device. The structures of the other components of the automatic height measurement assembly are referred to the prior art and will not be described in detail herein.

[0070] Therefore, the automatic height measuring device for the gear grinding of the thinning machine can be driven by the power component 14 (such as a cylinder) from the escape position (such as Figure 1 As shown) rotate to the working position (as shown Figure 2As shown). Then, under the action of the Z-axis power, the grinding wheel 15 moves vertically downward at a uniform speed, acting on the automatic height measurement device for the thinning machine gear grinding. The automatic height measurement device for the thinning machine gear grinding is deformed by the force and moves downward until the detection head of the sensor 18 acts on the CT worktable 21 to trigger a signal, thereby obtaining the Z-axis coordinate position. After multiple measurements, the Z-axis coordinate repeatability accuracy (relative position difference) meets the use requirements and is qualified, thus completing the height measurement operation.

[0071] In addition, it should be noted that the directions or positional relationships indicated by "up and down", "left and right", etc. in the present invention are based on the directions or positional relationships shown in the accompanying drawings, and are only for the purpose of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Any combination of all the embodiments provided by this utility model is within the scope of protection of this utility model and will not be described in detail here.

[0073] The above describes in detail the automatic height measurement assembly provided by the present invention and its automatic height measurement device for thinning machine gear grinding. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic height measuring device for thinning machine gear grinding, characterized in that: include: A four-bar linkage (13), one side of which is used to connect with a power assembly (14) so ​​as to move in space under the drive of the power assembly (14); A pressure head (10) for contacting a grinding wheel (15), the pressure head being arranged at the top of the other side of the four-bar linkage (13); A mounting seat (7) disposed at the bottom of the other side of the four-bar linkage (13); A sensor (18) vertically arranged on the mounting seat (7), wherein a measuring head of the sensor (18) is used to contact the CT workbench (21); The top and bottom of the four-bar linkage (13) are provided with elastic arms, and the elastic arms are used to deform when subjected to downward pressure from the grinding wheel (15). The four-bar linkage (13) is provided with a reset member in the vertical direction to reset the elastic arms when the downward pressure is removed. The four-bar linkage (13) is initially distributed in a first parallelogram, and one side of the four-bar linkage (13) provided with the mounting seat (7) is flush with or higher than the other side. When the four-bar linkage (13) is deformed, it is distributed in a second parallelogram, and one side of the four-bar linkage (13) provided with the mounting seat (7) is lower than the other side.

2. The automatic height measuring device for thinning machine gear grinding according to claim 1 is characterized in that: The four-bar linkage (13) comprises a left mounting plate (1), a right mounting plate (6) arranged opposite to the left mounting plate (1), an intermediate positioning plate (2), an intermediate fixing plate (3) and a pressure plate (5); the elastic arm comprises an elastically deformable hinge plate (4); the intermediate positioning plate (2), the hinge plate (4) and the intermediate fixing plate (3) are stacked and connected in sequence; the lengths of the intermediate positioning plate (2) and the intermediate fixing plate (3) are both the spacing between the left mounting plate (1) and the right mounting plate (6); the length of the hinge plate (4) is greater than the length of the intermediate positioning plate (2); The pressure plate (5), the left end of the hinge plate (4) and the top of the left mounting plate (1) are connected in sequence; the pressure plate (5), the left end of the hinge plate (4) and the bottom of the left mounting plate (1) are connected in sequence; the pressure head (10), the right end of the hinge plate (4) and the top of the right mounting plate (6) are connected in sequence; the pressure plate (5), the mounting seat (7), the right end of the hinge plate (4) and the bottom of the right mounting plate (6) are connected in sequence.

3. The automatic height measuring device for thinning machine gear grinding according to claim 2 is characterized in that: The screws (22) pass through the intermediate fixing plate (3) and the hinge plate (4) and are fixed on the intermediate positioning plate (2).

4. The automatic height measuring device for thinning machine gear grinding according to claim 2 is characterized in that: A guide block (9) is provided on one side of the left mounting plate (1), a limit piece (20) is horizontally provided at one end of the guide block (9) away from the left mounting plate (1), and a slide groove is provided on the right mounting plate (6), and an end of the limit piece (20) is inserted into the slide groove; A guide hole (23) is vertically provided in the guide block (9), and the reset member is provided in the guide hole (23). The reset member comprises a compression spring (19), and the elastic end of the compression spring (19) is in contact with the intermediate positioning plate (2).

5. The automatic height measuring device for thinning machine gear grinding according to claim 4 is characterized in that: At least two guide holes (23) are provided in the guide block (9), and the guide hole (23) is provided at one end close to the right mounting plate (6).

6. The automatic height measuring device for thinning machine gear grinding according to any one of claims 2 to 5, characterized in that: A pressure head fixing block (8) for supporting the pressure head (10), a steel ball (11) and a positioning plate (12) are provided on the top of the right mounting plate (6); the positioning plate (12) is used to position the steel ball (11) on the pressure head fixing block (8); and the wiring harness of the sensor (18) is led out from the side of the pressure head fixing block (8) and the pressure head (10); The pressure head (10) is movably connected to the pressure head fixing block (8) via the steel ball (11); a plane is provided on the top of the pressure head (10) for being parallel to the end face of the grinding wheel (15); and the center of the pressure head (10), the center of the steel ball (11) and the detection point of the sensor (18) are located on the same straight line.

7. The automatic height measuring device for thinning machine gear grinding according to any one of claims 1 to 5, characterized in that: The pressure head (10) comprises an alumina ceramic component.

8. The automatic height measuring device for thinning machine gear grinding according to any one of claims 1 to 5, characterized in that: A protective sleeve (16) is provided at the bottom of the mounting seat (7), and the protective sleeve (16) is sleeved on the outer periphery of the bottom of the sensor (18).

9. The automatic height measuring device for thinning machine gear grinding according to claim 8 is characterized in that: A limit block (17) is provided on the top of the mounting seat (7), and the limit block (17) is sleeved on the top periphery of the sensor (18).

10. An automatic height measurement component, characterized in that: include: A power assembly (14), an automatic height measuring device for a gear grinding machine according to any one of claims 1 to 9, and a control device, wherein one side of the four-bar linkage (13) of the automatic height measuring device for a gear grinding machine is connected to the power assembly (14), and the power assembly (14) and the sensor (18) of the automatic height measuring device for a gear grinding machine are both connected to the control device.

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