Numerical control machine tool clamp stability vibration testing device

Abstract

The invention relates to the related technical field of numerical control machine tool clamp testing, in particular to a numerical control machine tool clamp stability vibration testing device which comprises a numerical control machine tool body, a control panel is fixedly connected to the surface of one side of the numerical control machine tool body, and a testing clamp is fixedly connected to the surface of one side of the numerical control machine tool body. Through the arrangement of the vibration mechanism and the structural design of the motor-driven eccentric wheel, the device can realize the stepless adjustment of the vibration frequency by accurately controlling the rotating speed of the motor, can simulate various processing working conditions from low frequency to high frequency, meets different test requirements, and can flexibly adjust the vibration amplitude of the contact head through the combination of the threaded rod, the first connecting rod and the second connecting rod. The device can adapt to different strength test requirements, can also be compatible with numerical control machine tool clamps with different sizes and rigidities, remarkably improves the universality, and effectively buffers impact force and prolongs the service life while providing stable vibration excitation through the cooperation of the buffer spring and the cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fixture testing of numerical control machine tools, and particularly relates to a numerical control machine tool fixture stability vibration testing device. BACKGROUND

[0002] In the technical field of tooling fixture detection, the stability of the numerical control machine tool fixture is directly related to the machining accuracy and production efficiency. In actual machining, vibrations caused by various working conditions may affect the performance of the fixture, thereby causing workpiece positioning deviation or machining quality fluctuations. The numerical control machine tool fixture stability vibration testing device detects the dynamic performance of the fixture systematically by simulating the actual machining vibration environment. The core lies in quantitatively evaluating the clamping reliability and structural stability of the fixture under vibration conditions through controllable vibration excitation, combined with multi-dimensional sensing monitoring and data analysis. The automatic control and standardized testing process of the device can not only meet the quality control needs of the production link, but also provide technical basis for fixture design optimization. Therefore, there is an urgent need for a numerical control machine tool fixture stability vibration testing device.

[0003] A numerical control machine tool fixture stability testing device is disclosed in Chinese patent CN117629560A announced on March 1, 2024. The electric push rod drives the transmission block and the wedge-shaped rod holder to move together, so that the protrusion on the wedge-shaped rod holder continuously pushes the weight upwards, and then the weight continuously hammers the test rod, simulating the stability of the test fixture in the actual working clamping state. If the test rod shakes or deviates, the transmission rod will shake or move obliquely downward, so that the heavy ball rolls down from the limiting disc under the action of gravity. The worker observes the state of the heavy ball to judge the stability of the test fixture when clamping the test rod, thereby completing the stability test of the test fixture in the clamping state. However, the numerical control machine tool fixture stability testing device lacks flexible fixing structure that can adapt to different specifications of numerical control machine tools, making it difficult to meet diversified detection needs, thereby limiting its application scope. In addition, the device cannot flexibly adjust the test vibration frequency according to different working condition requirements, making it difficult to accurately simulate complex and variable actual machining environments, thereby limiting the comprehensiveness and reliability of the test results. SUMMARY

[0004] The present application aims to provide a numerical control machine tool fixture stability vibration testing device to solve the problem of the existing numerical control machine tool fixture stability testing device in the prior art, which lacks flexible fixing structure that can adapt to different specifications of numerical control machine tools, making it difficult to meet diversified detection needs, thereby limiting its application scope. In addition, the device cannot flexibly adjust the test vibration frequency according to different working condition requirements, making it difficult to accurately simulate complex and variable actual machining environments, thereby limiting the comprehensiveness and reliability of the test results.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a numerical control machine tool clamp stability vibration testing device, including numerical control machine tool main body, the side surface of numerical control machine tool main body is fixedly connected with control panel, the side surface of numerical control machine tool main body is fixedly connected with test fixture, the side surface of test fixture is fixedly connected with workpiece, the side surface of numerical control machine tool main body is fixedly connected with workbench, the upper surface of workbench is provided with fixing mechanism, the side surface of fixing mechanism is provided with pad seat, the upper surface of pad seat is provided with vibration mechanism;

[0006] The vibration mechanism comprises a motor, the motor is fixedly connected to the side surface of the pad seat, the side surface of the motor is rotatably connected with an eccentric wheel, the outer wall surface of the eccentric wheel is slidably connected with a frame, the side surface of the frame is fixedly connected with an outer frame, the outer wall surface of the frame is slidably connected with a guide piece, the side surface of the guide piece is fixedly connected with a first connecting rod, the side surface of the first connecting rod is threadedly connected with a threaded rod, the side surface of the threaded rod away from the first connecting rod is threadedly connected with a second connecting rod, the side surface of the second connecting rod is provided with a circular groove, the inner wall surface of the circular groove is slidably connected with a buffer spring, the inner wall surface of the buffer spring is slidably connected with a cylinder, the side surface of the cylinder is fixedly connected with a contact head, the contact head is provided with a rectangular groove, the outer wall surface of the first connecting rod is slidably connected with a limiting block, and the outer wall surface of the limiting block is fixedly connected with a support seat.

[0007] Preferably, the outer frame is provided with two same size frames, and the two frames are symmetrically distributed along the central axis of the frame, and the two frames are slidably connected with the eccentric wheel.

[0008] Preferably, the inner wall size of the guide piece is consistent with the outer wall size of the end of the frame away from the eccentric wheel, the limiting block is provided with two same size limiting blocks, and the two limiting blocks are parallelly distributed, and the guide piece, the first connecting rod, the limiting block and the support seat are parallelly distributed.

[0009] Preferably, the inner wall size of the circular groove is consistent with the outer wall size of the buffer spring, the cylinder is fixedly connected to the inner wall surface of the rectangular groove, and the outer wall size of the cylinder is consistent with the inner wall size of the buffer spring.

[0010] Preferably, the inner wall size of the rectangular groove is consistent with the outer wall size of the second connecting rod, and the inner wall size of the limiting block is consistent with the outer wall size of the second connecting rod and the first connecting rod.

[0011] Preferably, the fixing mechanism comprises a bottom plate slidingly connected to the upper surface of the workbench, the upper surface of the bottom plate is fixedly connected with a limiting plate, the upper surface of the bottom plate is fixedly connected with a guide plate, one side surface of the bottom plate is fixedly connected with a gas cylinder, one side surface of the gas cylinder is fixedly connected with a sliding piece, one side surface of the sliding piece is fixedly connected with a rack, one side surface of the rack is fixedly connected with a clamping piece, the outer wall surface of the rack is meshingly connected with a gear, and one side surface of the clamping piece is fixedly connected with a guide rod.

[0012] Preferably, the guide rod is provided with two guide rods of the same size and arranged in parallel, and the rack is provided with two racks of the same size and arranged in parallel.

[0013] Preferably, the clamping piece is provided with two clamping pieces of the same size and arranged in parallel, and the two clamping pieces and the two guide rods are arranged in a rectangular shape.

[0014] Preferably, the gear is rotationally connected to the side surface of the bottom plate away from the workbench, the limiting plate is slidingly connected to the side surface of the rack away from the gear, and the limiting plate is vertically connected to the side surface of the bottom plate away from the workbench.

[0015] Preferably, the guide plate and the sliding piece are slidingly connected to the side surface of the sliding piece away from the rack, and the gas cylinder, the guide plate, the limiting plate, the guide rod and the rack are arranged in parallel.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. By arranging the fixing mechanism, the gas cylinder serves as a power source, which has the characteristics of fast response speed and convenient operation compared with the traditional manual or hydraulic driving mode, can realize the rapid assembly and disassembly of the test fixture, greatly improves the test efficiency, and the meshing design of the two side racks and the gear cooperates with the precise guidance of the guide rod to ensure that the clamping piece moves uniformly and synchronously during clamping, avoids the inclination or deformation of the fixture caused by unilateral force, effectively improves the clamping stability and the reliability of the test data, and further adjusts the extension amount of the gas cylinder to flexibly adapt to test fixtures of different sizes and shapes, has strong universality, reduces the tedious operation of frequently replacing the fixing device due to the difference in fixture specifications, reduces the test cost, and the combination of the limiting plate and the guide plate not only enhances the stability of the mechanism operation, but also effectively prevents the sliding piece from deviating or jamming during movement, ensures the safety and reliability of the fixing process.

[0018] 2、Through the setting of the vibration mechanism, the structural design of the motor driving eccentric wheel, through the accurate control of the motor speed, the stepless adjustment of the vibration frequency can be realized, a variety of processing conditions from low frequency to high frequency can be simulated, different test requirements can be met, the combination of the threaded rod and the first and second connecting rods can flexibly adjust the vibration amplitude of the contact head, which can adapt to different intensity test requirements, and can also be compatible with different sizes and stiffness of the numerical control machine tool fixture, significantly improve the versatility of the device, the cooperation of the buffer spring and the cylinder can provide stable vibration excitation, effectively buffer the impact force, reduce the surface damage or device component wear caused by rigid collision, prolong the service life, the three limiting structures composed of the outer frame guard, the guide and the limiting block can ensure the accurate and stable running track of each component during vibration, greatly reduce the test error caused by vibration deviation, guarantee the reliability and repeatability of the data, and provide a scientific and efficient test scheme for the stability evaluation of the numerical control machine tool fixture. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic diagram of the application;

[0020] Figure 2 It is a whole structure schematic diagram of the application;

[0021] Figure 3 It is a whole structure schematic diagram of the application;

[0022] Figure 4 It is a whole structure schematic diagram of the application;

[0023] Figure 5 It is a whole structure schematic diagram of the application; Figure 6 It is a whole structure schematic diagram of the application;

[0024] Figure 7 It is a whole structure schematic diagram of the application;

[0025] Figure 8 It is a whole structure schematic diagram of the application;

[0026] In the figure: 1, numerical control machine tool main body; 2, control panel; 3, test fixture; 4, workpiece; 5, workbench; 6, fixing mechanism; 601, bottom plate; 602, limiting plate; 603, guide plate; 604, air cylinder; 605, sliding piece; 606, rack; 607, clamping piece; 608, gear; 609, guide rod; 7, cushion seat; 8, vibration mechanism; 801, motor; 802, eccentric wheel; 803, frame; 804, outer frame guard; 805, guide piece; 806, first connecting rod; 807, threaded rod; 808, second connecting rod; 809, circular groove; 810, buffer spring; 811, cylinder; 812, contact head; 813, rectangular groove; 814, limiting block; 815, support seat. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-8 The present application provides a technical solution: a numerical control machine tool fixture stability vibration test device, comprising a numerical control machine tool main body 1, the side surface of the numerical control machine tool main body 1 is fixedly connected with a control panel 2, the side surface of the numerical control machine tool main body 1 is fixedly connected with a test fixture 3, the side surface of the test fixture 3 is fixedly connected with a workpiece 4, the side surface of the numerical control machine tool main body 1 is fixedly connected with a workbench 5, the upper surface of the workbench 5 is provided with a fixing mechanism 6, the side surface of the fixing mechanism 6 is provided with a cushion seat 7, the upper surface of the cushion seat 7 is provided with a vibration mechanism 8;

[0029] The vibration mechanism 8 comprises a motor 801 fixedly connected to one side surface of the cushion seat 7, one side surface of the motor 801 is rotatably connected with an eccentric wheel 802, the outer wall surface of the eccentric wheel 802 is slidably connected with a frame 803, one side surface of the frame 803 is fixedly connected with an outer frame guard 804, the outer wall surface of the frame 803 is slidably connected with a guide piece 805, one side surface of the guide piece 805 is fixedly connected with a first connecting rod 806, one side surface of the first connecting rod 806 is threadedly connected with a threaded rod 807, the side surface away from the first connecting rod 806 of the threaded rod 807 is threadedly connected with a second connecting rod 808, one side surface of the second connecting rod 808 is provided with a circular groove 809, the inner wall surface of the circular groove 809 is slidably connected with a buffer spring 810, the inner wall surface of the buffer spring 810 is slidably connected with a cylinder 811, one side surface of the cylinder 811 is fixedly connected with a contact head 812, the contact head 812 is provided with a rectangular groove 813, the outer wall surface of the first connecting rod 806 is slidably connected with a limiting block 814, the outer wall surface of the limiting block 814 is fixedly connected with a supporting seat 815, through the setting of the motor 801, the eccentric wheel 802, the frame 803, the outer frame guard 804, the guide piece 805, the first connecting rod 806, the threaded rod 807, the second connecting rod 808, the circular groove 809, the buffer spring 810, the cylinder 811, the contact head 812, the rectangular groove 813, the limiting block 814 and the supporting seat 815, when in use, the motor 801 drives the eccentric wheel 802 to rotate, in the rotating process, through the sliding contact with the frame 803, the frame 803 makes reciprocating motion along the guide piece 805, at the same time, the outer frame guard 804 limits the eccentric wheel 802 to ensure the stability of the motion track, the motion of the frame 803 is sequentially transmitted to the second connecting rod 808 through the first connecting rod 806 and the threaded rod 807, the contact head 812 generates regular contact vibration with the test fixture 3 under the cooperation of the buffer spring 810, the circular groove 809, the rectangular groove 813 and the cylinder 811, by adjusting the threaded rod 807, the length between the first connecting rod 806 and the second connecting rod 808 can be changed, and then the vibration amplitude of the contact head 812 is adjusted, the limiting block 814 and the supporting seat 815 limit the first connecting rod 806 and the second connecting rod 808, by adjusting the rotating speed of the motor 801 and the length of the threaded rod 807, the vibration frequency and amplitude can be accurately controlled in two dimensions, and the vibration scene in the actual machining of the numerical control machine tool is highly restored.

[0030] Further, the outer frame guard 804 is provided with two same sizes and is symmetrically distributed along the central axis of the frame 803, the two outer frame guards 804 are slidably connected with the eccentric wheel 802, through the setting of the outer frame guard 804, in use, the double constraint mechanism of the outer frame guard 804 greatly improves the motion accuracy of the eccentric wheel 802, the reciprocating motion error of the frame 803 is controlled in a small range, and the frequency and direction of the test vibration are highly stable.

[0031] Furthermore, the inner wall size of the guide member 805 is consistent with the outer wall size of the end of the frame 803 away from the eccentric wheel 802. Two limit blocks 814 of the same size are provided and are distributed in parallel. The guide member 805, the first connecting rod 806, the limit block 814 and the support seat 815 are distributed in parallel. Through the setting of the guide member 805 and the frame 803, when in use, when the eccentric wheel 802 drives the frame 803 to perform reciprocating motion, the end of the frame 803 away from the eccentric wheel 802 is precisely embedded in the inner wall of the guide member 805. The high degree of consistency between the sizes of the two ensures an extremely small fitting gap, so that the frame 803 can only perform a linear motion along the axial direction of the guide member 805, effectively suppressing lateral shaking and deviation.

[0032] Furthermore, the inner wall dimensions of circular groove 809 match the outer wall dimensions of buffer spring 810. Cylinder 811 is fixedly connected to the inner wall surface of rectangular groove 813. The outer wall dimensions of cylinder 811 match the inner wall dimensions of buffer spring 810. Due to the arrangement of circular groove 809 and buffer spring 810, when contact head 812 collides with test fixture 3, buffer spring 810 is compressed within circular groove 809, with its outer wall tightly fitting against the inner wall of the groove, limiting radial deviation or distortion of the spring and ensuring uniform axial release of the buffering force. Simultaneously, cylinder 811 is embedded in the inner hole of buffer spring 810, providing both support and guidance, preventing the buffer spring 810 from becoming unstable and bending when compressed, and assisting in its rapid reset when the spring rebounds.

[0033] Furthermore, the inner wall size of the rectangular groove 813 is consistent with the outer wall size of the second connecting rod 808, and the inner wall size of the limit block 814 is consistent with the outer wall size of the second connecting rod 808 and the first connecting rod 806. Through the setting of the rectangular groove 813 and the second connecting rod 808, when in use, the precise adaptation of the rectangular groove 813 and the second connecting rod 808 constitutes a stable force transmission and guiding structure. When the vibration of the frame 803 is transmitted to the second connecting rod 808 through the first connecting rod 806 and the threaded rod 807, the second connecting rod 808 relies on the close fit with the inner wall of the rectangular groove 813 to ensure that the vibration energy is accurately transmitted to the contact head 812 in a straight line direction, thereby reducing the force transmission loss or vibration direction deviation caused by the fitting clearance.

[0034] Further, the fixing mechanism 6 comprises a bottom plate 601 slidably connected to the upper surface of the workbench 5, the upper surface of the bottom plate 601 is fixedly connected with a limiting plate 602, the upper surface of the bottom plate 601 is fixedly connected with a guide plate 603, one side surface of the bottom plate 601 is fixedly connected with a gas cylinder 604, one side surface of the gas cylinder 604 is fixedly connected with a sliding piece 605, one side surface of the sliding piece 605 is fixedly connected with a rack 606, one side surface of the rack 606 is fixedly connected with a clamping piece 607, the outer wall surface of the rack 606 is meshingly connected with a gear 608, one side surface of the clamping piece 607 is fixedly connected with a guide rod 609, through the setting of the bottom plate 601, the limiting plate 602, the guide plate 603, the gas cylinder 604, the sliding piece 605, the rack 606, the clamping piece 607, the gear 608 and the guide rod 609, in use, the bottom plate 601 is attached to the workbench 5, and then power is provided through the gas cylinder 604, when the gas cylinder 604 is started, the sliding piece 605 is pushed to move along the guide plate 603, and the rack 606 connected thereto is driven to move, since the rack 606 and the gear 608 are meshingly connected, the two racks 606 can move synchronously, and then the two clamping pieces 607 slide along the guide rod 609, the workbench 5 of different specifications in the numerical control machine tool can be placed between the two clamping pieces 607, the distance between the clamping pieces 607 is adjusted through the extension and contraction of the gas cylinder 604, the rapid and firm fixation of the test device is completed, at the same time, the limiting plate 602 limits and guides the rack 606, the guide plate 603 assists the stable sliding of the sliding piece 605, different sizes of test devices can be flexibly adapted by adjusting the stroke of the gas cylinder 604, and the universality is high, and the tooling does not need to be frequently replaced.

[0035] Further, the guide rod 609 is provided with two same sizes and is distributed in parallel, the rack 606 is provided with two same sizes and is distributed in parallel, the two guide rods 609 are connected with the two racks 606 in a penetrating mode, through the setting of the guide rod 609 and the rack 606, in use, when the gas cylinder 604 pushes the sliding piece 605 to move, the rack 606 connected thereto slides along the guide rod 609, since the guide rod 609 limits, the rack 606 can only move linearly in a fixed direction, the inclination or deviation caused by uneven stress is reduced, at the same time, the two guide rods 609 synchronously constrain the two racks 606, cooperate with the meshing transmission of the gear 608, ensure that the two clamping pieces 607 open and close in a completely symmetrical mode, and the stability of the mechanism is greatly improved.

[0036] Further, the clamping pieces 607 are provided with two same sizes, and are in parallel distribution, the two clamping pieces 607 and the two guide rods 609 are in rectangular arrangement, through the setting of the clamping pieces 607, in use, the two parallel distribution clamping pieces 607 pass through the rectangular arrangement design of the guide rod 609, and form a stable clamping structure, when the cylinder 604 drives the rack 606 to move, the clamping piece 607 connected therewith slides towards or reverses along the guide rod 609, utilizes the parallel distribution characteristics, and forms uniform and symmetrical clamping force to the workbench 5, the parallel arrangement of the clamping piece 607 ensures that the clamp is balanced in the fixing process, avoids that the clamp is deformed or position deviation due to unilateral pressure being too large, and ensures the reliability of test data.

[0037] Further, the gear 608 is rotationally connected to the side surface of the bottom plate 601 away from the workbench 5, the limiting plate 602 is slidingly connected to the side surface of the rack 606 away from the gear 608, the limiting plate 602 is vertically connected to the side surface of the bottom plate 601 away from the workbench 5, through the setting of the limiting plate 602 and the rack 606, in use, when the cylinder 604 drives the rack 606 to slide along the guide rod 609, the limiting plate 602 is tightly attached to the side surface of the rack 606 away from the gear 608, and a vertical support force is applied to the side surface, the side force generated due to the meshing transmission of the gear 608 is effectively offset, the rack 606 is prevented from being inclined or warped in the movement process, and the stability of the mechanism is improved.

[0038] Further, the guide plate 603 is slidingly connected to the side surface of the sliding piece 605 away from the rack 606, the cylinder 604, the guide plate 603, the limiting plate 602, the guide rod 609 and the rack 606 are in parallel distribution, through the setting of the guide plate 603 and the sliding piece 605, in use, when the cylinder 604 outputs power to drive the sliding piece 605 to move, the sliding piece 605 can only move linearly along the preset parallel track under the constraint of the guide plate 603, the design effectively reduces the deviation or swing of the sliding piece 605 due to uneven force in the movement process, and ensures that the rack 606 and the clamping piece 607 connected therewith can smoothly and accurately complete the clamping and loosening actions.

[0039] Working principle: the numerical control machine tool fixture stability vibration test device in operation, each part structure synergistic cooperation, realize the accurate test to the stability of fixture, fixed mechanism 6 provides power through air cylinder 604, when air cylinder 604 starts, push slide 605 along guide plate 603 moves, and drive the rack 606 movement, because rack 606 and gear 608 are meshing connection, can make both sides rack 606 synchronous movement, in turn drive two clamping pieces 607 along guide rod 609 slide, the staff can different specifications of numerical control machine tool worktable 5 is placed between two clamping pieces 607, through the telescopic of air cylinder 604, adjust the spacing of clamping piece 607, realize the quick and firm fixation of test device, at the same time, the limiting plate 602 to rack 606 plays a limiting guide role, guide plate 603 auxiliary slide 605 smooth sliding, ensure that the fixing process is stable and reliable, when testing, vibration mechanism 8 starts to play a role, motor 801 runs and drives eccentric wheel 802 to rotate, eccentric wheel 802 rotates in the process, through the sliding contact with frame 803, make frame 803 along the guide 805 reciprocating motion, at the same time, the outer frame 804 limits eccentric wheel 802, ensures that its movement track is stable, the movement of frame 803 in turn through the first connecting rod 806, threaded rod 807 is transmitted to the second connecting rod 808, contact head 812 under the cooperation of buffer spring 810 and cylinder 811, with test fixture 3 produces regular contact vibration, by adjusting the threaded rod 807, can change the length between the first connecting rod 806 and the second connecting rod 808, in turn adjust the vibration amplitude of contact head 812, at the same time, also can better adapt to different specifications of numerical control machine tool, at the same time, by controlling the rotating speed of motor 801, can flexibly change the rotating speed of eccentric wheel 802, so as to accurately adjust the test vibration frequency, in the process of vibration, buffer spring 810 plays a buffering role, avoid rigid collision to test fixture 3 and the damage of the device itself, limiting block 814 and support seat 815 limit the first connecting rod 806 and the second connecting rod 808, provide stable support for the whole vibration structure, wherein the model of motor 801 is YE2-132S-4, so as to complete the use process of a numerical control machine tool fixture stability vibration test device.

[0040] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A vibration test device for the stability of a CNC machine tool fixture, comprising a CNC machine tool body (1), characterized in that: A control panel (2) is fixedly connected to one side surface of the CNC machine tool body (1), a test fixture (3) is fixedly connected to one side surface of the CNC machine tool body (1), a workpiece (4) is fixedly connected to one side surface of the test fixture (3), a workbench (5) is fixedly connected to one side surface of the CNC machine tool body (1), a fixing mechanism (6) is provided on the upper surface of the workbench (5), a pad (7) is provided on one side surface of the fixing mechanism (6), and a vibration mechanism (8) is provided on the upper surface of the pad (7); The vibration mechanism (8) includes a motor (801), the motor (801) is fixedly connected to a side surface of the cushion seat (7), the side surface of the motor (801) is rotatably connected to an eccentric wheel (802), the outer wall surface of the eccentric wheel (802) is slidably connected to a frame (803), the side surface of the frame (803) is fixedly connected to an outer frame guard (804), the outer wall surface of the frame (803) is slidably connected to a guide member (805), the side surface of the guide member (805) is fixedly connected to a first connecting rod (806), the side surface of the first connecting rod (806) is threadedly connected to a threaded rod (807), the threaded rod (80 7) A second connecting rod (808) is threadedly connected to a surface on one side away from the first connecting rod (806), a circular groove (809) is provided on a surface on one side of the second connecting rod (808), a buffer spring (810) is slidably connected to the inner wall surface of the circular groove (809), a cylinder (811) is slidably connected to the inner wall surface of the buffer spring (810), a contact head (812) is fixedly connected to a surface on one side of the cylinder (811), a rectangular groove (813) is provided on the contact head (812), an outer wall surface of the first connecting rod (806) is slidably connected to a limit block (814), and an outer wall surface of the limit block (814) is fixedly connected to a support seat (815).

2. A CNC machine tool fixture stability vibration test device according to claim 1, characterized in that: Two outer frame guards (804) of the same size are provided and are symmetrically distributed along the central axis of the frame (803). The two outer frame guards (804) are slidably connected to the eccentric wheel (802).

3. The CNC machine tool fixture stability vibration testing device according to claim 1, characterized in that: The inner wall size of the guide member (805) matches the outer wall size of the end of the frame (803) away from the eccentric wheel (802), and two limit blocks (814) of the same size are provided and are distributed in parallel. The guide member (805), the first connecting rod (806), the limit block (814) and the support seat (815) are distributed in parallel.

4. The CNC machine tool fixture stability vibration testing device according to claim 1, characterized in that: The inner wall size of the circular groove (809) matches the outer wall size of the buffer spring (810), the cylinder (811) is fixedly connected to the inner wall surface of the rectangular groove (813), and the outer wall size of the cylinder (811) matches the inner wall size of the buffer spring (810).

5. The CNC machine tool fixture stability vibration testing device according to claim 1, characterized in that: The inner wall size of the rectangular groove (813) matches the outer wall size of the second connecting rod (808), and the inner wall size of the limit block (814) matches the outer wall size of the second connecting rod (808) and the first connecting rod (806).

6. The CNC machine tool fixture stability vibration testing device according to claim 1, characterized in that: The fixing mechanism (6) includes a base plate (601), the base plate (601) is slidably connected to the upper surface of the workbench (5), the upper surface of the base plate (601) is fixedly connected to a limit plate (602), the upper surface of the base plate (601) is fixedly connected to a guide plate (603), one side surface of the base plate (601) is fixedly connected to a cylinder (604), one side surface of the cylinder (604) is fixedly connected to a sliding member (605), one side surface of the sliding member (605) is fixedly connected to a rack (606), one side surface of the rack (606) is fixedly connected to a clip (607), the outer wall surface of the rack (606) is meshedly connected to a gear (608), and one side surface of the clip (607) is fixedly connected to a guide rod (609).

7. The CNC machine tool fixture stability vibration testing device according to claim 6, characterized in that: The guide rods (609) are provided with two of the same size and are distributed in parallel, and the racks (606) are provided with two of the same size and are distributed in parallel. The two guide rods (609) are connected through the two racks (606).

8. The CNC machine tool fixture stability vibration testing device according to claim 6, characterized in that: The two clips (607) are provided with the same size and are distributed in parallel. The two clips (607) and the two guide rods (609) are arranged in a rectangular shape.

9. The CNC machine tool fixture stability vibration testing device according to claim 6, characterized in that: The gear (608) is rotatably connected to a side surface of the bottom plate (601) away from the workbench (5), the limiting plate (602) is slidably connected to a side surface of the rack (606) away from the gear (608), and the limiting plate (602) is vertically connected to a side surface of the bottom plate (601) away from the workbench (5).

10. The CNC machine tool fixture stability vibration testing device according to claim 6, characterized in that: The guide plate (603) is slidably connected to a surface of a side of the sliding member (605) away from the rack (606), and the cylinder (604), the guide plate (603), the limit plate (602), the guide rod (609) and the rack (606) are distributed in parallel.

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