Reliability test device for grinding wheel spindle of numerical control grinding machine

Abstract

The utility model relates to the technical field of spindle reliability testing devices, and discloses a numerical control grinding machine grinding wheel spindle reliability testing device which comprises a base, two stand columns are installed at the top of the left end of the base, two hydraulic rods are installed at the right end of the top of the base, and the tops of the stand columns and the tops of the hydraulic rods are connected with movable pieces. The movable part is mounted at the bottom of the test board, a micro motor and a movable block are mounted in the test board, an electric push rod is mounted at the top of the movable block, and a fixed plate is mounted at the top of the electric push rod. Through the design of the electric push rod and the hydraulic cylinder, in the testing process, one end of the testing table can be flexibly jacked up by driving the movable part of the hydraulic cylinder, so that the testing table is inclined to a preset angle, and the working state of the main shaft in a horizontal or inclined mode is simulated; and the electric push rod is responsible for controlling the fixed plate and the pressure sensor and the friction piece at the top of the fixed plate to accurately test the main shaft.

Description

Technical Field

[0001] This utility model relates to the technical field of spindle reliability testing devices, specifically a CNC grinding machine grinding wheel spindle reliability testing device. Background Technology

[0002] The spindle is the core component that receives power from the engine or electric motor and transmits it to other machine parts, playing a crucial role in CNC grinding machines. As the core functional component of a CNC grinding machine, its performance directly determines the overall operation of the machine. Therefore, testing the spindle's performance is particularly important.

[0003] CNC grinding machine spindle reliability testing equipment is an indispensable piece of equipment in industrial production, its core function being to accurately evaluate the performance and reliability of CNC grinding machine spindles. However, current testing equipment on the market generally faces the challenges of complex structure and cumbersome operation procedures, which significantly limit the improvement of testing efficiency. More importantly, these devices often lack effective clamping and installation solutions for spindles of different sizes during testing, further limiting their applicability and practicality. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a reliability testing device for CNC grinding machine grinding wheel spindles, which has the advantages of simple operation and good adaptability, and solves the problems of complex operation and poor adaptability.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goals of simple operation and good adaptability, this utility model provides the following technical solution:

[0008] A reliability testing device for a CNC grinding machine grinding wheel spindle includes a base. Two columns are mounted on the top left of the base, and two hydraulic cylinders are mounted on the top right of the base. The tops of the columns and hydraulic cylinders are connected to movable parts, which are installed at the bottom of a test bench. Inside the test bench are a micro motor, a lead screw, and a moving block. An electric push rod is mounted on the top of the moving block, and a fixed plate is mounted on the top of the electric push rod. A pressure sensor is mounted on the top of the fixed plate, and a friction element is mounted on the top of the pressure sensor. A sliding rod and a limiting plate are mounted on the bottom of the friction element. Two mounting mechanisms are slidably mounted on the top of the test bench, and a slide rail that cooperates with the mounting mechanisms is provided on the top of the test bench. A limiting mechanism is mounted on the top right of the test bench and is fixed to the top of the test bench by bolts.

[0009] As a preferred technical solution of this utility model, the columns are respectively installed at the two corners of the top left end of the base, and the front and rear parts of the top right end of the base are provided with slide rails. The slide rails are used to cooperate with the hydraulic cylinders. The top of the hydraulic cylinder is provided with a connecting block that cooperates with the slide rails, and the top of the hydraulic cylinder is also provided with a connecting block that cooperates with the moving parts.

[0010] As a preferred embodiment of this utility model, the bottom of the test platform is equipped with four movable parts, and the four movable parts are respectively installed at the four corners of the bottom of the test platform. The top of the test platform is provided with a hole that cooperates with the moving block. The top of the test platform is provided with two slide rails that cooperate with the installation mechanism, and the slide rails are fixedly installed on the top of the test platform. The right end of the top of the test platform is provided with a threaded hole that cooperates with the positioning block.

[0011] As a preferred technical solution of this utility model, the installation mechanism consists of a fixed frame, a second lead screw, a rotating handle, a lifting plate, a support plate, and a sliding block. The sliding block is fixedly installed on the slide rail on the top of the test bench. The fixed frame and the support plate are both installed on the top of the sliding block. The lifting plate is installed inside the fixed frame. The second lead screw is installed on the top of the fixed frame. The rotating handle is installed on the top of the second lead screw.

[0012] As a preferred embodiment of this utility model, the fixed frame is installed on the right end of the top of the sliding block, and a support block is slidably installed on the left end of the top of the sliding block. The left and right ends of the lifting plate are provided with sliders, and the left and right ends of the interior of the fixed frame are provided with sliding grooves that cooperate with the lifting plate. The left and right sides of the fixed frame are provided with through holes that cooperate with the support block. The left and right ends of the support block are provided with strip grooves. The fixed frame and the support block are fixed by bolts.

[0013] As a preferred embodiment of this utility model, the limiting mechanism consists of a positioning block and two limiting plates. The positioning block is U-shaped, and a circular through hole is provided in the middle part of the positioning block. Both ends of the positioning block are provided with through holes that cooperate with bolts. The positioning block is fixed to the top of the test bench by bolts. The two limiting plates are respectively installed on the left and right ends of the positioning block. Both the top and bottom of the two limiting plates are provided with strip grooves, and threaded through holes are provided on the positioning block where they cooperate with the strip grooves of the limiting plates. The positioning block and the limiting plates are fixed by bolts.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a reliability testing device for CNC grinding machine grinding wheel spindle, which has the following beneficial effects:

[0016] This CNC grinding machine spindle reliability testing device, through the design of its mounting and limiting mechanisms, allows for precise clamping of the spindle during operation. Different sized spindles are placed on a support plate, and the precise up-and-down movement of the support plate, coordinated with the lifting plate, ensures stability during testing. Simultaneously, after the rear end of the spindle is embedded into the circular through-hole on the positioning block, the limiting plates on both sides move inward synchronously to effectively limit the spindle and prevent lateral movement during testing. The design of the electric push rod and hydraulic cylinder allows for flexible lifting of one end of the test platform during testing, tilting it to a preset angle to simulate the spindle's horizontal or tilted working state. Meanwhile, the electric push rod controls the fixed plate and its top pressure sensor and friction components to accurately test the spindle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structural test bench of this utility model;

[0019] Figure 3 This is an enlarged schematic diagram of section A of the structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection of the installation mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection of the structural limiting mechanism of this utility model.

[0022] In the diagram: 1. Base; 2. Column; 3. Hydraulic cylinder; 4. Test platform; 5. Moving parts; 6. Mounting mechanism; 601. Fixed frame; 602. Lead screw II; 603. Rotary handle; 604. Lifting plate; 605. Support plate; 606. Sliding block; 7. Limiting mechanism; 701. Positioning block; 702. Limiting plate; 8. Micro motor; 9. Lead screw I; 10. Moving block; 11. Electric push rod; 12. Fixed plate; 13. Pressure sensor; 14. Friction component; 15. Sliding rod; 16. Limiting block; 17. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1-5 ,

[0027] A reliability testing device for a CNC grinding machine grinding wheel spindle includes a base 1. Two columns 2 are mounted on the top left of the base 1, and two hydraulic cylinders are mounted on the top right of the base 1. The tops of the columns 2 and hydraulic cylinders 3 are connected to movable parts 5. The movable parts 5 are installed at the bottom of a test bench 4. A micro motor 8, a lead screw 9, and a moving block 10 are installed inside the test bench 4. An electric push rod 11 is mounted on the top of the moving block 10. A fixed plate 12 is mounted on the top of the electric push rod 11. A pressure sensor 13 is mounted on the top of the fixed plate 12. A friction element 14 is mounted on the top of the pressure sensor 13. A slide rod 15 and a limit block 16 are mounted on the bottom of the friction element 14. Two mounting mechanisms 6 are slidably mounted on the top of the test bench 4, and a slide rail that cooperates with the mounting mechanisms 6 is provided on the top of the test bench 4. A limit mechanism 7 is mounted on the top right of the test bench 4 and is fixed to the top of the test bench 4 by limit bolts 17.

[0028] In this example, the columns 2 are respectively installed at the two corners of the top left end of the base 1. The front and rear parts of the top right end of the base 1 are provided with slide rails, which are used to cooperate with the hydraulic cylinder 3. The top of the hydraulic cylinder 3 is provided with a connecting block that cooperates with the slide rail, and the top of the hydraulic cylinder 3 is also provided with a connecting block that cooperates with the movable part 5.

[0029] It should be noted that columns 2 are installed at the two corners of the top left side of the base 1, and fixed with limit bolts 17 to enhance the overall rigidity and stability. The connecting block at the bottom of the hydraulic cylinder 3 cooperates with the slide rail, and the slide rail ensures the smooth and precise movement of the hydraulic cylinder 3.

[0030] In this example, four movable parts 5 are installed on the bottom of the test platform 4, and the four movable parts 5 are respectively installed at the four corners of the bottom of the test platform 4. The top of the test platform 4 is provided with a hole that cooperates with the moving block 10. The top of the test platform 4 is provided with two slide rails that cooperate with the mounting mechanism 6, and the slide rails are fixedly installed on the top of the test platform 4. The right end of the top of the test platform 4 is provided with a threaded hole that cooperates with the positioning block 701.

[0031] It should be noted that the slide rail is fixedly installed on the top of the test bench 4, providing a stable track for the left and right movement of the mounting mechanism 6. The threaded hole design allows the positioning block 701 to be firmly fixed to the test bench 4 by the limiting bolt 17.

[0032] In this example, the mounting mechanism 6 consists of a fixed frame 601, a second lead screw 602, a rotating handle 603, a lifting plate 604, a support plate 605, and a sliding block 606. The sliding block 606 is fixedly installed on the slide rail on the top of the test bench 4. The fixed frame 601 and the support plate 605 are both installed on the top of the sliding block 606. The lifting plate 604 is installed inside the fixed frame 601. The second lead screw 602 is installed on the top of the fixed frame 601, and the rotating handle 603 is installed on the top of the second lead screw 602.

[0033] It should be noted that the design of the sliding block 606 allows the mounting mechanism 6 to slide easily along the slide rail. The fixed frame 601 and the support plate 605 are both installed on the top of the sliding block 606, providing a stable support platform for the entire mounting mechanism 6. The lifting plate 604 moves up and down by the drive of the lead screw 602, thereby achieving precise installation of the spindle.

[0034] In this example, the fixed frame 601 is installed on the right end of the top of the sliding block 606, and the support block is slidably installed on the left end of the top of the sliding block 606. The left and right ends of the lifting plate 604 are provided with sliders, and the left and right ends of the interior of the fixed frame 601 are provided with sliding grooves that cooperate with the lifting plate 604. The left and right sides of the fixed frame are provided with through holes that cooperate with the support block. The left and right ends of the support block are provided with strip grooves. The fixed frame 601 and the support block are fixed by limiting bolts 17.

[0035] It should be noted that the fixed frame 601 is precisely installed on the right end of the top of the sliding block 606, providing a stable support base for the entire installation mechanism 6. The left and right ends of the lifting plate 604 are cleverly equipped with sliders, which perfectly match the sliding grooves on the left and right ends inside the fixed frame 601, ensuring the smoothness and accuracy of the lifting plate 604 during its up and down movement.

[0036] In this example, the limiting mechanism 7 consists of a positioning block 701 and two limiting plates 702. The positioning block 701 is U-shaped and has a circular through hole in the middle. Both ends of the positioning block 701 have through holes that mate with the limiting bolts 17. The positioning block 701 is fixed to the top of the test bench 4 by the limiting bolts 17. The two limiting plates 702 are installed on the left and right ends of the positioning block 701, respectively. The top and bottom of the two limiting plates 702 are provided with strip grooves, and threaded through holes are provided on the positioning block 701 where they mate with the strip grooves of the limiting plates 702. The positioning block 701 and the limiting plates 702 are fixed by the limiting bolts 17.

[0037] It should be noted that the design of the positioning block 701 not only provides sufficient strength and stability, but also facilitates connection and fixation with other components. The strip groove not only provides more adjustment space, but also facilitates precise alignment and fixation with the positioning block 701.

[0038] In summary: First, the spindle to be tested is securely placed on the support plate 605. Next, the position of the mounting mechanism 6 is flexibly adjusted according to the actual length of the spindle to ensure it moves left and right to the most suitable testing position. Then, through the coordinated action of the support plate 605 and the lifting plate 604, the spindle is precisely clamped according to its diameter, ensuring its stability during testing. After clamping, the limiting plates 702 at both ends of the positioning block 701 are simultaneously moved inward to tightly clamp the spindle, and then securely fixed with the limiting bolts 17 to prevent any displacement of the spindle during testing. Next, the micro motor 8 is started, driving the moving block 10 to precisely move the electric push rod 11 and the workpiece mounted on its top to the bottom of the spindle. Subsequently, the spindle of the electric push rod 11 is started to rotate. At this time, the electric push rod 11 controls the friction element 14 and the pressure sensor 13 to slowly move upward, testing the spindle. During the test, the reading of the pressure sensor 13 must be closely monitored. When the pressure reaches a preset threshold, causing the spindle to stop rotating, the pressure value at that moment is recorded as an important reference for evaluating spindle performance. Furthermore, to simulate different working conditions of the spindle in actual operation, the test platform 4 can be tilted to the desired angle using the adjustment function of hydraulic cylinder 3 to perform a tilt test on the spindle. This design not only enhances the comprehensiveness of the test but also improves the practicality and accuracy of the test results.

[0039] Beneficial effects:

[0040] This CNC grinding machine spindle reliability testing device, through the design of its mounting and limiting mechanisms, allows for precise clamping of the spindle during operation. Different sized spindles are placed on a support plate, and the precise up-and-down movement of the support plate, coordinated with the lifting plate, ensures stability during testing. Simultaneously, after the rear end of the spindle is embedded into the circular through-hole on the positioning block, the limiting plates on both sides move inward synchronously to effectively limit the spindle and prevent lateral movement during testing. The design of the electric push rod and hydraulic cylinder allows for flexible lifting of one end of the test platform during testing, tilting it to a preset angle to simulate the spindle's horizontal or tilted working state. Meanwhile, the electric push rod controls the fixed plate and its top pressure sensor and friction components to accurately test the spindle.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A numerical control grinding machine wheel spindle reliability test device, comprising a base, characterized in that: The top of the left end of the base is provided with two columns, and the top right end of the base is provided with two hydraulic cylinders, the top of the column and the hydraulic cylinder is connected with the movable element, the movable element is installed at the bottom of the test table, the test table is internally provided with a micro motor, a lead screw and a moving block, the top of the moving block is provided with an electric push rod, the top of the electric push rod is provided with a fixed plate, the top of the fixed plate is provided with a pressure sensor, the top of the pressure sensor is provided with a friction element, the bottom of the friction element is provided with a sliding rod and a limiting plate, the top of the test table is slidably provided with two mounting mechanisms, and the top of the test table is provided with a sliding rail matched with the mounting mechanism, the right end of the top of the test table is provided with a limiting mechanism, and the limiting mechanism is fixed on the top of the test table by bolts.

2. The reliability testing device for the grinding wheel spindle of a CNC grinding machine according to claim 1, characterized in that: The column is installed at the two corners of the top of the left end of the base respectively, the top right end of the base is provided with a sliding rail, the sliding rail is matched with the hydraulic cylinder, the top of the hydraulic cylinder is provided with a connecting block matched with the sliding rail, and the top of the hydraulic cylinder is provided with a connecting block matched with the movable element.

3. The reliability testing device for the grinding wheel spindle of a CNC grinding machine according to claim 1, characterized in that: The bottom of the test table is provided with four movable elements, and the four movable elements are installed at the four corners of the bottom of the test table respectively, the top of the test table is provided with a hole matched with the moving block, the top of the test table is provided with two sliding rails matched with the mounting mechanism, and the sliding rails are fixedly installed on the top of the test table, the right end of the top of the test table is provided with a threaded hole matched with the positioning block.

4. The reliability testing device for the grinding wheel spindle of a CNC grinding machine according to claim 1, characterized in that: The mounting mechanism is composed of a fixed frame, a lead screw, a handle, a lifting plate, a supporting plate and a sliding block, the sliding block is fixedly installed on the sliding rail on the top of the test table, the fixed frame and the supporting plate are installed on the top of the sliding block, the lifting plate is installed in the fixed frame, the lead screw is installed on the top of the fixed frame, and the handle is installed on the top of the lead screw.

5. The reliability testing device for the grinding wheel spindle of a CNC grinding machine according to claim 4, characterized in that: The fixed frame is installed at the right end of the top of the sliding block, the left end of the top of the sliding block is slidably provided with a supporting block, the left and right ends of the lifting plate are provided with sliding blocks, and the inside of the fixed frame is provided with sliding grooves matched with the lifting plate, the left and right sides of the fixed frame are provided with through holes matched with the supporting block, the left and right ends of the supporting block are provided with strip grooves, and the fixed frame and the supporting block are fixed by bolts.

6. The reliability testing device for the grinding wheel spindle of a CNC grinding machine according to claim 1, characterized in that: The limiting mechanism is composed of a positioning block and two limiting plates, the positioning block is U-shaped, and the middle part of the positioning block is provided with a circular through hole, the front and rear ends of the positioning block are provided with through holes matched with the bolts, the positioning block is fixed on the top of the test table by bolts, two limiting plates are installed at the left and right ends of the positioning block, the top and bottom of the two limiting plates are provided with strip grooves, and the positioning block is provided with threaded through holes matched with the strip grooves of the limiting plates, and the positioning block and the limiting plate are fixed by bolts.

Images