CN213985596U - Mechanical vibration loading test device - Google Patents
Mechanical vibration loading test device Download PDFInfo
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- CN213985596U CN213985596U CN202022511308.6U CN202022511308U CN213985596U CN 213985596 U CN213985596 U CN 213985596U CN 202022511308 U CN202022511308 U CN 202022511308U CN 213985596 U CN213985596 U CN 213985596U
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Abstract
The utility model discloses a mechanical type vibration loading test device, including the handle of a knife, loading dish, eccentric block I and eccentric block II, handle of a knife one end links to each other with the coupling shaft, and the loading dish is installed to the coupling shaft other end, and the loading dish left and right sides is provided with wedge ring I and wedge ring II respectively, and wedge ring I and wedge ring II all install on the coupling shaft. The utility model discloses realize the vibration loading of main shaft at the gyration in-process with the help of installing the eccentric moment that the eccentric block of loading dish produced, realize with the help of general handle of a knife with the help of the connection of experimental main shaft, adjust the eccentricity with the help of adjusting the eccentric block at the fixed position of loading dish, through the eccentric block adjustment eccentric mass of changing different models, adjust the vibration frequency through transform main shaft rotational speed, and then simulate the vibration loading of different intensity, need not plus actuating mechanism and power, the vibration loading scheme is simple and practical, and the commonality is strong.
Description
Technical Field
The utility model relates to a vibration simulation load test device, in particular to mechanical type non-contact vibration load test device for main shaft.
Background
In cutting machining, relative vibration such as forced vibration caused by external excitation, self-excited vibration caused by the cutting process and the like often occurs between a cutter and a workpiece, and when the vibration superposed on the main motion and the feed motion of the machine tool in the cutting process exceeds an allowable range, the vibration will affect the working precision of the machine tool so as to increase the machining error and reduce the quality of the machined surface of the workpiece. Vibration during machining can also generate additional dynamic load on parts of the machine tool, change the contact state between the parts of the machine tool, and cause the precision of the parts of the machine tool to decline, thereby shortening the service life of the parts of the machine tool. In order to reduce the influence of vibration on mechanical processing, the cutting amount is forced to change in the processing, and the cutting amount influences the processing efficiency of a machine tool.
The machine tool spindle system is a typical bearing-rotor system, and vibration of the machine tool spindle in the working process can be caused due to fluctuation of cutting force and rotation imbalance caused by asymmetry of the structural design of the spindle system and uneven distribution of mass and materials. As a key component of the machine tool, vibration of the spindle inevitably causes variations in the machining quality and aggravates deterioration of the working accuracy of the spindle with the lapse of time. Therefore, in order to analyze the dynamic characteristics of the rotor-bearing system, maintain the working accuracy of the spindle system, and improve the reliability, it is necessary to develop a vibration loading test apparatus to simulate the vibration during the cutting process.
Disclosure of Invention
The utility model discloses to the not enough in the aspect of the current main shaft rotation mechanical simulation vibration loading test, provide one kind and realize simple, installation and loading convenience, vibration frequency not restricted by the vibration device operating frequency, can simulate the non-contact mechanical type vibration loading test device of main shaft vibration.
The technical scheme for realizing the purpose is as follows: a mechanical vibration loading test device comprises a knife handle, a loading disc, an eccentric block I and an eccentric block II, wherein one end of the knife handle is connected with a connecting shaft, the other end of the connecting shaft is provided with the loading disc, the left side and the right side of the loading disc are respectively provided with a wedge-shaped ring I and a wedge-shaped ring II, and the wedge-shaped ring I and the wedge-shaped ring II are both arranged on the connecting shaft;
the eccentric block I and the eccentric block II are fixed on the loading disc by respectively using an eccentric bolt II and an eccentric bolt I;
4 circles of threaded holes are machined in the loading disc at equal intervals along the radial direction, the included angle of two adjacent rows of threaded holes in the circumferential direction is 30 degrees, a circular hole is formed in the center of the loading disc, 4 raised rectangular sliding keys are arranged on the inner surface of the circular hole, and the distance between every two adjacent rectangular sliding keys is 90 degrees along the circumferential direction;
the outer surface of one end of the connecting shaft, which is connected with the loading disc, is provided with 4 rectangular sliding key grooves, and two adjacent rectangular sliding keys are 90 degrees apart along the circumferential direction and can be matched with the sliding keys arranged on the loading disc to realize circumferential fixation of the loading disc;
the wedge surfaces of the wedge-shaped ring I and the wedge-shaped ring II are respectively matched with the corresponding wedge surfaces on the left side and the right side of the loading disc to realize the automatic centering of the loading disc;
the wedge-shaped ring I and the wedge-shaped ring II are respectively installed on a sliding key groove of the connecting shaft by means of 4 guide groove bolts I and 4 guide groove bolts II to realize the axial and circumferential fixation of the wedge-shaped ring I and the wedge-shaped ring II;
the eccentric block I and the eccentric block II are symmetrically arranged on two sides of the loading disc;
the eccentric block I and the eccentric block II are both fan-shaped blocks;
the knife handle is a general BT or HSK knife handle.
The mechanical vibration loading test device realizes the vibration loading of the main shaft in the rotation process by means of the eccentric moment generated by the eccentric block arranged on the loading disc, does not need to add a driving mechanism and power in the loading process, fundamentally avoids the contact between an additional excitation device and the main shaft, and realizes simple structure.
This mechanical type vibration loading test device adjusts the eccentricity with the help of adjusting the eccentric block in the fixed position of loading dish, through changing the eccentric block adjustment eccentric mass of different models, adjusts the vibration frequency through the transform main shaft rotational speed, and then simulates the vibration loading of different intensity, and the vibration loading is simple swift more.
The mechanical vibration loading test device adjusts the position of the loading disc along the axis direction of the main shaft by means of the sliding of the loading disc along the rectangular sliding key groove arranged on the connecting shaft, so as to simulate the adjustment of the vibration loading position and approach the actual working condition; the wedge surface of the wedge-shaped ring is matched with the wedge surface of the loading disc to realize the automatic centering of the loading disc, and the centering error is small.
The mechanical vibration loading test device realizes connection with a test main shaft by means of the universal tool handle, can be conveniently installed on main shafts of different models and manufacturers to perform vibration loading tests by replacing tool handles of different types and models, and is simple and practical in implementation scheme and strong in universality.
Drawings
Fig. 1 is a structural diagram of a mechanical shock excitation loading test apparatus.
Fig. 2 is a partial side view.
In the figure: the device comprises a knife handle (1), a connecting shaft (2), a loading disc (3), an eccentric block I (4), an eccentric bolt I (5), a wedge-shaped ring I (6), a guide groove bolt I (7), a wedge-shaped ring II (8), a guide groove bolt II (9), an eccentric bolt II (10) and an eccentric block II (11).
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the mechanical vibration loading test device comprises a knife handle (1) and a connecting shaft (2), wherein one end of the connecting shaft (2) is connected with the knife handle (1), the other end of the connecting shaft (2) is provided with a loading disc (3), the left side and the right side of the loading disc (3) are respectively provided with a wedge-shaped ring I (6) and a wedge-shaped ring II (8), the wedge-shaped ring I (6) and the wedge-shaped ring II (8) are both arranged on the connecting shaft (2), and an eccentric block I (4) and an eccentric block II (11) are respectively fixed on the loading disc (3) by means of an eccentric bolt II (10) and an eccentric bolt I (5);
4 circles of threaded holes are machined in the loading disc (3) at equal intervals along the radial direction, the included angle of two adjacent rows of threaded holes in the circumferential direction is 30 degrees, a circular hole is formed in the center of the loading disc (3), 4 raised rectangular sliding keys are arranged on the inner surface of the circular hole, and the distance between every two adjacent rectangular sliding keys in the circumferential direction is 90 degrees;
the outer surface of one end of the connecting shaft (2) connected with the loading disc (3) is provided with 4 rectangular sliding key grooves, the distance between two adjacent rectangular sliding keys in the circumferential direction is 90 degrees, and the sliding keys can be matched with the sliding keys arranged on the loading disc (3) to realize circumferential fixation of the loading disc (3);
the wedge-shaped ring I (6) and the wedge-shaped ring II (8) are installed on a sliding key groove of the connecting shaft (2) by means of 4 guide groove bolts I (7) and 4 guide groove bolts II (9) to realize the axial and circumferential fixation of the wedge-shaped ring I and the wedge-shaped ring II;
wedge surfaces of the wedge-shaped ring I (6) and the wedge-shaped ring II (8) are respectively matched with corresponding wedge surfaces on the left side and the right side of the loading disc (3) to realize automatic centering of the loading disc and eliminate centering errors;
the eccentric block I (4) and the eccentric block II (11) are both fan-shaped blocks and are symmetrically arranged on two sides of the loading disc (3);
the knife handle (1) is a general BT or HSK knife handle.
In the present embodiment: when the mechanical vibration loading test device works, the device is firstly installed into a machine tool main shaft by virtue of a tool handle (1), the eccentric distance can be adjusted by adjusting the fixed positions of the eccentric block I (4) and the eccentric block II (11) on the loading disc (3), the eccentric mass is adjusted by replacing the eccentric blocks I (4) and the eccentric blocks II (11) of different models, the vibration frequency is adjusted by changing the rotating speed of the main shaft, and then vibration loading with different strengths is simulated.
In the present embodiment: the guide groove bolt I (7) and the guide groove bolt II (9) are loosened, the axial position of the loading disc (3) can be changed by sliding the loading disc (3) along the axial direction of the cutter handle, and then the loading of vibration at different positions along the axial direction of the cutter can be simulated.
In the present embodiment: by replacing the tool shanks (1) of different types and models, the mechanical vibration loading test device can be widely applied to various spindle loading tests and is high in universality.
Claims (1)
1. A mechanical vibration loading test device is characterized by comprising: the device comprises a knife handle (1) and a connecting shaft (2), wherein one end of the connecting shaft (2) is connected with the knife handle (1), the other end of the connecting shaft (2) is provided with a loading disc (3), the left side and the right side of the loading disc (3) are respectively provided with a wedge-shaped ring I (6) and a wedge-shaped ring II (8) which are arranged on the connecting shaft (2), and an eccentric block I (4) and an eccentric block II (11) are symmetrically arranged on two sides of the loading disc (3) by virtue of an eccentric bolt II (10) and an eccentric bolt I (5);
4 circles of threaded holes are machined in the loading disc (3) at equal intervals along the radial direction, the included angle of two adjacent rows of threaded holes in the circumferential direction is 30 degrees, a circular hole is formed in the center of the loading disc (3), 4 raised rectangular sliding keys are arranged on the inner surface of the circular hole, and the distance between every two adjacent rectangular sliding keys in the circumferential direction is 90 degrees;
the outer surface of one end of the connecting shaft (2) connected with the loading disc (3) is provided with 4 rectangular sliding key grooves, and two adjacent rectangular sliding keys are 90 degrees apart in the circumferential direction and can be matched with the sliding keys arranged on the loading disc (3);
the wedge-shaped ring I (6) and the wedge-shaped ring II (8) are arranged on a sliding key groove of the coupling shaft (2) by means of 4 guide groove bolts I (7) and 4 guide groove bolts II (9);
wedge surfaces of the wedge-shaped ring I (6) and the wedge-shaped ring II (8) are respectively matched with corresponding wedge surfaces on the left side and the right side of the loading disc (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511308.6U CN213985596U (en) | 2020-10-26 | 2020-10-26 | Mechanical vibration loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022511308.6U CN213985596U (en) | 2020-10-26 | 2020-10-26 | Mechanical vibration loading test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213985596U true CN213985596U (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022511308.6U Active CN213985596U (en) | 2020-10-26 | 2020-10-26 | Mechanical vibration loading test device |
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| Country | Link |
|---|---|
| CN (1) | CN213985596U (en) |
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2020
- 2020-10-26 CN CN202022511308.6U patent/CN213985596U/en active Active
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