Grinding machine active measuring device applying cross orthogonal flexible bearing

Abstract

The utility model belongs to the technical field of grinding machine active measuring devices, and relates to a grinding machine active measuring device applying a cross-shaped orthogonal flexible bearing, and the cross-shaped orthogonal flexible bearing is arranged in a shell; the cross orthogonal flexible bearing is provided with two L-shaped fixing blocks; a rectangular-ambulatory-plane flexible element and an H-shaped flexible element which are arranged in a cross manner are arranged between square structures formed by the two L-shaped fixing blocks; one end of the cross-shaped orthogonal flexible bearing is fixed on the inner wall surface of the shell, and the other end of the cross-shaped orthogonal flexible bearing is fixedly connected with a movable rod positioned in the shell, so that a lever mechanism taking the cross-shaped orthogonal flexible bearing as a fulcrum is formed; the front end of the movable rod extends out of the shell and is provided with a measuring rod measurer at the end, and the movable rod is in contact with a workpiece through the measuring rod measurer; a tension spring is further arranged on the inner wall face of the shell. A power element is fixed to the middle rear end of the inner wall face of the shell, and the output end of the power element acts on the movable rod through the ball head ejector rod. The device is simple in structure, convenient to assemble, simple to maintain, low in cost and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of active measuring devices for grinding machines, and relates to an active measuring device for grinding machines using a cross orthogonal flexible bearing. Background Art

[0002] The active measuring device of the grinder is a kind of active measuring device for the grinder that is composed of the controller. It is used for active measurement of the products to be ground during the grinding process, so as to improve the dimensional accuracy of the workpiece, reduce the scrap rate, reduce the labor intensity of workers, reduce costs and improve efficiency. During the workpiece processing, the measuring device measures the workpiece at any time and inputs the measurement results into the controller. Then, when the signal point preset by the controller is reached, the controller sends a signal to control the action of the machine tool, which can greatly improve the accuracy and yield of the ground products. As for the active measuring device of the grinder, similar products on the market are mostly lever structures made of leaf springs, leaf springs or bearing structures. The structural characteristics of leaf springs and leaf springs are: small bending stiffness, when the device is slightly hit, it is easy to exceed the limit deformation, causing the measuring device to be unusable. In addition, the protection effect on the sensors of important components at the back end is small, which is easy to increase the maintenance cost, and the rotating axis cannot be determined, which is easy to affect the measurement accuracy during the precise measurement process. The bearing structure has special requirements on the accuracy of the bearing itself. The assembly process is complex and time-consuming, the overall cost is high, and the workload during maintenance and disassembly is large, which is time-consuming and labor-intensive. In addition, there are also some measuring devices that use lever structures made of flexible bearings, but there are two problems: first, some use integral flexible bearings, and its own structure also has the problem of uncertainty of the rotating axis, so it is also easy to affect the measurement accuracy. In addition, such a structure is difficult to process, requires high technical level of processing personnel, and has high cost. Second, some use clamping flexible bearings, but in the overall structure of the measuring device, it is in a centrally symmetrical manner, with a flexible bearing installed above and below, which results in a series of problems such as an increase in overall parts, a relatively complex structure, and a high cost. Secondly, in actual applications, the measuring range is small and is affected by the overall structure. It is not flexible enough when facing different measurement environments and measurement objects. For example, when measuring the outer diameter, inner diameter, and width, it is necessary to replace measuring devices with different structures, which further results in an increase in parts, an increase in overall cost, and difficulty in classification management. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an active measuring device for a grinding machine using a cross orthogonal flexible bearing.

[0004] The utility model adopts the following technical solutions to achieve the above purpose:

[0005] An active measuring device for a grinder using a cross-orthogonal flexible bearing, the measuring device having a shell with an opening at one end, and a shell cover being provided at the open end of the shell; a cross-orthogonal flexible bearing being provided in the shell, and the cross-orthogonal flexible bearing being located at the front end of the inner cavity of the shell; the cross-orthogonal flexible bearing having two L-shaped fixing blocks: one of the L-shaped fixing blocks is inverted, and the two L-shaped fixing blocks are buckled to form a square structure, and a cross-shaped flexible element and an H-shaped flexible element are provided between the square structure formed by the two L-shaped fixing blocks, that is, the corresponding two ends of the H-shaped flexible element are respectively matched with the vertical part of the L-shaped fixing block, and the two ends of the H-shaped flexible element pass through the H-shaped flexible element and are respectively matched with the horizontal part of the L-shaped fixing block, and the two L-shaped fixing blocks and the H-shaped flexible element together form a cross-orthogonal flexible bearing; One end of the cross-orthogonal flexible bearing is fixed on the inner wall of the housing, and the other end is fixedly connected to the moving rod in the housing. The moving rod, the housing, and the cross-orthogonal flexible bearing form a lever mechanism with the cross-orthogonal flexible bearing as a fulcrum. The front end of the moving rod extends out of the housing and a measuring rod and a measuring device are installed at its end, and the measuring rod and the measuring device contact the workpiece. A tension spring is also arranged on the inner wall of the housing to assist in recovery and apply pressure during the swing and measurement of the lever mechanism. One end of the tension spring is fixed to the middle of the housing, and the other end of the tension spring is fixed to the moving rod. A power element is fixed to the middle and rear ends of the inner wall of the housing, and the output end of the power element directly acts on the ball head push rod when outputting. The ball head push rod is fixed on the moving rod and forms an integral body with the moving rod. A displacement sensor is arranged at the end of the moving rod. The displacement sensor is fixed to the rear end of the inner wall of the housing, and the data measured by the measuring rod and the measuring device contacting the workpiece is transmitted to the displacement sensor through a lever structure formed by the cross-orthogonal flexible bearing as a fulcrum.

[0006] The front and rear ends of the lever mechanism are both provided with a limit component a and a limit component b that can be adjusted to limit; the limit component a is arranged at the front end of the cross-orthogonal flexible bearing and fixed in the inner wall surface of the shell, and the limit component b is arranged at the rear end of the cross-orthogonal flexible bearing, located between the output end of the power element and the displacement sensor, and fixed on the moving rod.

[0007] The lever mechanism can swing at an angle of ±2.3°.

[0008] The utility model proposes an active measuring device for a grinder using a cross-orthogonal flexible bearing. The cross-orthogonal flexible bearings are arranged in a cross-orthogonal manner, so that a single cross-orthogonal flexible bearing can withstand various loads such as large axial loads, radial loads and overturning moments; at the same time, the ultra-thin structure is miniaturized to the maximum extent, but has high rigidity; in short, the cross-orthogonal flexible bearing has the advantages of small size, high precision, strong anti-deformation ability, large load-bearing capacity and flexible structural design; in addition, as long as it is used in a conventional manner, its life will be long-lasting; in the active measuring device for a grinder using a cross-orthogonal flexible bearing, the lever mechanism adopts a cross-orthogonal flexible bearing structure, and the moving rod moves with the cross-orthogonal bearing. The cross-orthogonal flexible bearing swings, and limiting components are arranged at the front and rear ends of the movable rod, which only play a limiting role during normal use. However, when the front end of the movable rod is subjected to an unexpected heavy load, the limiting protrusion can also protect the cross-orthogonal flexible bearing and the displacement sensor of the important component at the rear end within a certain range, thereby reducing the maintenance cost. The active measuring device of the grinder using the cross-orthogonal flexible bearing has a lever structure composed of a cross-orthogonal flexible bearing as a fulcrum in the overall structure, which reduces the number of parts and components, and is simpler in structure, convenient in assembly, simple in maintenance, low in cost, and long in service life. It can also cope with different use environments and measurement objects, and can measure outer diameters, inner diameters, width positioning, etc. in any combination. It is a modular design, which reduces the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a side sectional view of the overall structure of the utility model.

[0010] Figure 2 for Figure 1 Top view of the .

[0011] Figure 3 , Figure 4 It is a structural schematic diagram of the cross orthogonal flexible bearing in the utility model.

[0012] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the cross orthogonal flexible bearing in the utility model.

[0013] In the figure: 1 housing; 2 limiting component a; 3 cross orthogonal flexible bearing; 4 tension spring; 5 power element; 6 displacement sensor; 7 limiting component b; 8 ball head push rod; 9 housing cover; 10 moving rod; 11 measuring rod and measuring element; 12 workpiece, 13 L-shaped fixing block; 14 U-shaped flexible element, 15 H-shaped flexible element. DETAILED DESCRIPTION

[0014] The utility model is described in detail with reference to the accompanying drawings and specific embodiments;

[0015] like Figure 1, Figure 2 As shown, an active measuring device for a grinder using a cross-orthogonal flexible bearing is provided. The measuring device has a housing 1 with an opening at one end, and a housing cover 9 is provided at the open end of the housing 1; a cross-orthogonal flexible bearing 3 is provided in the housing 1, and the cross-orthogonal flexible bearing 3 is located at the front end of the inner cavity of the housing 1; the cross-orthogonal flexible bearing 3 has two L-shaped fixing blocks 13, a U-shaped flexible element 14 and an H-shaped flexible element 15: Figure 3 , Figure 4 , Figure 5 , one of the L-shaped fixing blocks 13 is inverted, and the two L-shaped fixing blocks 13 are buckled to form a square structure. The U-shaped flexible element 14 and the H-shaped flexible element 15 are cross-arranged between the square structure formed by the two L-shaped fixing blocks 13, that is, the corresponding two ends of the U-shaped flexible element 14 are respectively matched with the vertical parts of the L-shaped fixing blocks 13, and the two ends of the H-shaped flexible element 15 pass through the U-shaped flexible element 14 and are respectively matched with the horizontal parts of the L-shaped fixing blocks 13, and they together form a cross-orthogonal flexible bearing 3, which uses the U-shaped flexible element 14 and the H-shaped flexible element 15 to form a very effective hinge through a determined rotation axis; one end face of the cross-orthogonal flexible bearing 3 is fixed to the inner wall surface of the shell 1, and the other end face is fixedly connected to the moving rod 10 located in the shell 1, and the moving rod 10, the shell 1, and the cross-orthogonal flexible bearing 3 constitute a lever mechanism with the cross-orthogonal flexible bearing 3 as a fulcrum; the front end of the moving rod 10 extends out of the shell 1 A measuring rod and a stator 11 are installed at its end, and the measuring rod and the stator 11 are in contact with the workpiece 12; a tension spring 4 is also arranged on the inner wall surface of the shell 1 to assist in recovery and apply pressure during the swing and measurement of the lever mechanism; one end of the tension spring 4 is fixed to the middle part of the shell 1, and the other end of the tension spring 4 is fixed to the moving rod 10; a power element 5 is fixed to the middle and rear ends of the inner wall surface of the shell 1, and the output end of the power element directly acts on the ball head push rod 8 when outputting; the ball head push rod 8 is fixed on the moving rod 10 and forms an integral part with the moving rod 10; a displacement sensor 6 is arranged at the end of the moving rod 10; the displacement sensor 6 is fixed to the rear end of the inner wall surface of the shell 1, and the data measured by the contact between the measuring rod and the stator 11 and the workpiece 12 is transmitted to the displacement sensor 6 through a lever structure composed of a cross-orthogonal flexible bearing 3 as a fulcrum; the cross-orthogonal flexible bearing 3 serves as the fulcrum of the lever structure, which effectively ensures the repeatability of the active measuring device;

[0016] The power element described in this embodiment is a cylinder, and if the power element is not needed, it can be replaced with a plug; the limiting components a and b are screws.

[0017] The front and rear ends of the lever mechanism are both provided with a limit component a2 and a limit component b7 for adjusting the limit position: that is, the limit component a2 is arranged at the front end of the cross orthogonal flexible bearing 3 and fixed in the inner wall surface of the housing 1; the limit component b7 is arranged at the rear end of the cross orthogonal flexible bearing 3, between the output end of the power element 5 and the displacement sensor 6, and fixed on the moving rod 10. In the free state during normal use, it only plays a role in preventing over-travel and limiting the position. However, when the front end of the moving rod 10 or the measuring rod 11 is subjected to an unexpected heavy load, the limit component a2 and the limit component b7 can protect the cross orthogonal flexible bearing 3 and the important component displacement sensor 6 at the rear end within a certain range, thereby reducing the maintenance cost.

[0018] When in use, the movable rod 10 in the active measuring device of a grinder using a cross orthogonal flexible bearing mentioned in the utility model forms a lever structure with the cross orthogonal flexible bearing 3 as the fulcrum. Before entering the measuring station, the cylinder as a power element is ventilated to push the piston rod out, push the ball head push rod 8, so that the lever structure is actuated and the measuring rod and the measuring piece 11 are opened. At this time, the driving device (which can be hydraulically driven, pneumatic or electromechanically controlled) drives the measuring device to enter the measuring station, the cylinder is de-energized, the piston rod contracts, the lever structure is actuated again, the measuring rod and the measuring piece 11 are contracted, and come into contact with the measuring workpiece 12, and enter the measuring state (if not In an environment where a cylinder is required, the measuring device can directly enter the measuring station. When the workpiece 12 is measured, the measuring rod and probe 11 are in contact and away from each other, the measuring rod and probe 11 generate opening and contraction movements. When the size of the workpiece 12 changes, the measuring rod and probe 11 are displaced accordingly. The change is transmitted to the sensor end through the lever structure, driving the displacement sensor 6 to make relative movement. The displacement sensor 6 converts the displacement into a corresponding displacement electrical signal and transmits the electrical signal to the external control box. The external control box processes the signal and transmits it to the machine tool controller through the field bus. The machine tool controller performs data analysis and processing to complete the measurement process.

[0019] like Figure 2 and Figure 3 As shown, the cross-orthogonal flexible bearing structure comprises: an L-shaped fixing plate 13 (two pieces), a U-shaped flexible element 14 and an H-shaped flexible element 15. The U-shaped flexible element 14 and the H-shaped flexible element 15 are arranged crosswise in a cross-orthogonal manner and are fixed in the long groove of the L-shaped fixing plate 13 by gluing; the end surface of the L-shaped fixing plate 13 is reserved with three screw holes, which are used to respectively Figure 1 The moving rod 10 and the housing 1 are connected and installed.

Claims

1. An active measuring device for a grinding machine using a cross-orthogonal flexible bearing, characterized in that: The measuring device has a shell with an opening at one end, and a shell cover is provided at the open end of the shell; a cross-orthogonal flexible bearing is provided in the shell, and the cross-orthogonal flexible bearing is located at the front end of the inner cavity of the shell; the cross-orthogonal flexible bearing has two L-shaped fixing blocks: one of the L-shaped fixing blocks is inverted, and the two L-shaped fixing blocks are buckled to form a square structure, and a cross-shaped flexible element and an H-shaped flexible element are arranged between the square structure formed by the two L-shaped fixing blocks, that is, the corresponding two ends of the U-shaped flexible element are respectively matched with the vertical part of the L-shaped fixing block, and the two ends of the H-shaped flexible element pass through the U-shaped flexible element and are respectively matched with the horizontal part of the L-shaped fixing block, and the two L-shaped fixing blocks and the U-shaped flexible element and the H-shaped flexible element together form a cross-orthogonal flexible bearing; One end of the cross-orthogonal flexible bearing is fixed on the inner wall of the housing, and the other end is fixedly connected to the moving rod in the housing. The moving rod, the housing, and the cross-orthogonal flexible bearing form a lever mechanism with the cross-orthogonal flexible bearing as a fulcrum. The front end of the moving rod extends out of the housing and a measuring rod and a measuring device are installed at its end, and the measuring rod and the measuring device contact the workpiece. A tension spring is also arranged on the inner wall of the housing to assist in recovery and apply pressure during the swing and measurement of the lever mechanism. One end of the tension spring is fixed to the middle of the housing, and the other end of the tension spring is fixed to the moving rod. A power element is fixed to the middle and rear ends of the inner wall of the housing, and the output end of the power element directly acts on the ball head push rod when outputting. The ball head push rod is fixed on the moving rod and forms an integral body with the moving rod. A displacement sensor is arranged at the end of the moving rod. The displacement sensor is fixed to the rear end of the inner wall of the housing, and the data measured by the measuring rod and the measuring device contacting the workpiece is transmitted to the displacement sensor through a lever structure formed by the cross-orthogonal flexible bearing as a fulcrum.

2. The active measuring device for a grinding machine using a cross-orthogonal flexible bearing as claimed in claim 1, characterized in that: The front and rear ends of the lever mechanism are both provided with a limit component a and a limit component b that can be adjusted to limit; the limit component a is arranged at the front end of the cross-orthogonal flexible bearing and fixed in the inner wall surface of the shell, and the limit component b is arranged at the rear end of the cross-orthogonal flexible bearing, located between the output end of the power element and the displacement sensor, and fixed on the moving rod.

3. The active measuring device for a grinding machine using a cross-orthogonal flexible bearing as claimed in claim 1, characterized in that: The lever mechanism can swing at an angle of ±2.3°.

Images