CN110657191A - Damping-adjustable vibration isolator for high-speed punch press - Google Patents

Abstract

The invention relates to a damping-adjustable vibration isolator for a high-speed punch press, which comprises an upper bottom plate and a lower bottom plate, wherein a plurality of springs are arranged between the upper bottom plate and the lower bottom plate, a damping cylinder with damping liquid inside is arranged in the middle of the lower bottom plate, a damping plug with the lower end immersed in the damping liquid is arranged on the lower side of the upper bottom plate, a damping adjusting block is vertically connected to the middle of the upper bottom plate through threads, and the lower end of the damping adjusting block is immersed in the damping liquid and can move up and down through rotation. According to the invention, different damping vibration isolation effects are obtained by adjusting through the screw structure of the damping block and the adjustable up-down displacement according to different damping forces required by the high-speed punch and the vibration isolation effect required to be achieved.

Description

A high-speed punch damping adjustable vibration isolator

technical field

The invention relates to the field of vibration isolators, in particular to a damping adjustable vibration isolator for a high-speed punch.

Background technique

When the high-speed punch is running, vibration is inevitable due to the existence of various excitation factors. Punch vibration has a great impact on the processing of parts, especially for high-precision ultra-precision machinery, special attention should be paid to preventing the impact of the surrounding environment on the operation of mechanical equipment. The vibration of high-speed punches, especially high-speed ultra-precision punches, not only affects the machining accuracy, shortens the life of the mold, reduces the production efficiency, but also causes fatigue and damage to the punch. Therefore, it is of great significance to control the vibration of high-speed punches, and the research and manufacture of vibration isolation devices for high-speed punches also occupy an important position.

The high-speed punch vibration isolation device is generally installed between the high-speed punch and the foundation, and the damping effect of the damping element (spring, damping, etc.) is used to reduce the vibration effect, so as to control the vibration of the high-speed punch and protect the surrounding facilities. As little energy as possible is transmitted to other surrounding equipment, so as not to affect the normal use of other equipment. At present, the damping of vibration isolators for high-speed punching machines is basically unadjustable. Commonly used vibration isolators generally include pure rubber pad vibration isolators, spring rubber isolators Vibrators, spring isolators, etc. Different operating speeds of high-speed punching machines will produce different vibration effects during use, so it is completely necessary to adjust the damping of vibration isolators for high-speed punching machines.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a damping adjustable vibration isolator for a high-speed punch. Through the helical feature of the damping block and the screw structure that can adjust the upper and lower displacement, according to the different damping forces required by the high-speed punch and the vibration isolation that needs to be achieved effect, adjust to obtain different damping and vibration isolation effects.

The invention relates to a damping adjustable vibration isolator for a high-speed punch, which comprises an upper base plate and a lower base plate, a plurality of springs are arranged between the upper and lower base plates, and a damper with built-in damping fluid is arranged in the middle of the lower base plate. Damping cylinder, the lower side of the upper bottom plate is provided with a damping plug whose lower end is immersed in the damping liquid, the middle part of the upper bottom plate is vertically connected with a damping adjustment block through threads, and the lower end of the damping adjustment block is immersed in the damping liquid And can be moved up and down by turning.

Further, the damping adjustment block is in the shape of a cone as a whole, and the interior is hollow.

Further, the outer surface of the damping adjustment block is provided with a spiral groove and a ventilation hole communicated with the inner hollow.

Further, the surface of the spiral groove is provided with features that do not penetrate pits, protrusions or gaps.

Further, the lower end face of the damping adjustment block is provided with an inclined cut-in groove, and the outside of the cut-in groove has a protrusion.

Further, a threaded positioning cylinder is arranged in the middle part of the lower side of the upper bottom plate, the damping adjustment block is threadedly connected with the inner side wall of the threaded positioning cylinder, and the middle part of the damping adjustment block is provided with a thread passing through the upper bottom plate. the center column.

Further, the upper end of the damping adjustment block is connected with at least one fixing screw passing through the upper bottom plate.

Further, the damping cylinder is a coaxially arranged inner and outer two-layer structure, and the inner and outer layers are communicated through a damping hole.

Further, the two ends of the lower side surface of the upper bottom plate are vertically connected with limit screws, and the lower ends of the limit screws are fastened with the lower bottom plate.

Further, the upper end of the spring is connected with the upper bottom plate through the spring upper base, and the lower end of the spring is connected with the lower bottom plate through the spring lower base.

Beneficial effects: The present invention relates to a damping adjustable vibration isolator for a high-speed punch, which has a novel structure, and a damping adjustment mechanism and a limit fixing mechanism are added. , so that the vibration isolator meets the needs of different stamping states of high-speed punching machines; the external characteristics of the damping adjustment block are changed, the damping adjustment block is set to an overall tapered shape, and the cut-in groove feature is set at the bottom of the damping adjustment block, which is convenient for the damping adjustment block. The adjustment of the up and down displacement and the contact area with the damping fluid realizes the adjustable damping.

Description of drawings

Fig. 1 is the front view half-section structure diagram of the present invention;

FIG. 2 is a structural diagram of the damping adjustment block of the present invention.

Illustration: 1. Base under spring; 2. Spring; 3. Ventilation hole; 4. Base on spring; 5. Upper base plate; 6. Threaded positioning cylinder; 7. Damping adjusting block; 8. Fixing screw; 9. Damping plug; 10, damping fluid; 11, damping cylinder; 12, limit screw; 13, lower bottom plate; 14, damping hole; 15, cut-in groove.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

As shown in FIGS. 1-2 , the embodiment of the present invention relates to a damping adjustable vibration isolator for a high-speed punch, including an upper bottom plate 5 and a lower bottom plate 13 , and several Spring 2, the middle of the lower bottom plate 13 is provided with a damping cylinder 11 with built-in damping fluid 10, the lower side of the upper bottom plate 5 is provided with a damping plug 9 whose lower end is immersed in the damping fluid 10, the upper bottom plate 5 A damping adjusting block 7 is vertically connected to the middle part through threads, and the lower end of the damping adjusting block 7 is submerged in the damping liquid 10 and can be moved up and down by rotating.

The upper and lower positions of the damping adjusting block 7 are adjusted by rotating the damping adjusting block 7 , thereby adjusting the contact area between the damping adjusting block 7 and the damping liquid 10 , and adjusting the damping force.

The damping adjusting block 7 is in the shape of a cone as a whole, and the interior is hollow, and the conical damping adjusting block 7 can obviously and quickly adjust the contact area between the damping adjusting block 7 and the damping liquid 10 .

The outer surface of the damping adjustment block 7 is provided with a spiral groove and a ventilation hole 3 communicating with the inner hollow. The spiral groove helps to improve the damping force. The ventilation hole 3 is located at the upper end of the inner hollow, which is convenient for gas during the adjustment process. release.

In order to further improve the damping force, the surface of the helical groove can be provided with non-penetrating pits or protrusions or gaps.

The lower end face of the damping adjustment block 7 is provided with an inclined cut-in groove 15, and there are protrusions on the outside of the cut-in groove 15. Since the damping adjustment block 7 makes the rotation move up and down, the cut-in groove 15 is convenient for the damping adjustment block 7. Displacement adjustment in damping fluid.

In order to adjust the rotation of the damping adjustment block 7, a threaded positioning cylinder 6 is provided in the middle of the lower side of the upper bottom plate 5, and the damping adjustment block 7 is threadedly connected with the inner side wall of the threaded positioning cylinder 6. The middle of the damping adjustment block 7 is provided with a center column that passes through the upper bottom plate 5 , and only needs to rotate the center column to drive the damping adjustment block 7 to rotate during operation.

In order to prevent the damping adjustment block 7 from rotating by itself without adjustment, the upper end of the damping adjustment block 7 is connected with at least one fixing screw 8 passing through the upper bottom plate 5, usually two, which are symmetrically arranged. The screw 8 can effectively lock the damping adjustment block 7, and the fixing screw 8 can be removed when adjustment is required.

The damping cylinder 11 is a coaxially arranged inner and outer two-layer structure, and the inner and outer layers are communicated through a damping hole 14. The damping cylinder 11 adopts an inner and outer two-layer structure, which can make the damping force of the damping plug 9 and the damping adjusting block 7 receive. Without mutual influence, the damping fluid can flow slowly between the inner and outer layers.

Both ends of the lower side of the upper base plate 5 are vertically connected with limit screws 12, the lower ends of the limit screws 12 are fastened with the lower base plate 13, and the upper base plate 5 and the lower base plate 13 pass through the left and right limits of the vibration isolator. The positioning screw 12 is fixed and limited, and a preliminary compressive force is applied to the spring 2 to ensure that the basic shape of the vibration isolator is complete.

The upper end of the spring 2 is connected to the upper base plate 5 through the spring upper base 4 , and the lower end of the spring 2 is connected to the lower base plate 13 through the spring lower base 1 .

Before the adjustable damping vibration isolator described in this patent works, the spring 2 is further compressed due to the heavy pressure of the high-speed punch itself, and the upper and lower bottom plates of the vibration isolator are pressed together and approached, and the damping adjustment block 7 is submerged into the damping cylinder 11 In the inner damping fluid 10, the damping fluid 10 is in large-area contact with the inner and outer surfaces of the damping plug 9, and is filled with the helical groove features on the surface of the damping adjustment block 7, and the pits or through holes, grooves, etc. on the surface of the helical groove enter the The inside of the damping adjustment block 7 is in contact with its inner surface.

The damping adjustment block 7 moves up and down in small amplitudes with different rotational speeds of the high-speed punch. The upper bottom plate 5 of the vibration isolator is fixed with the base of the high-speed punch. When the high-speed punch moves downward, the spring 2 is compressed, and its movement is subject to the hysteresis of the spring 2. The damping plug 9 and the damping adjusting block 7 are deeply submerged in the damping fluid 10, and the damping fluid 10 fills its surface; when the high-speed punch moves upward, the upper bottom plate 5 drives the damping adjusting block 7 to move upward, and the spring 2 returns. The trend of the original length is that the whole is subject to upward pulling force, and the part that is not below the damping liquid 10 is hindered by the adhesion of the damping liquid 10, and has a downward pulling force, and the damping plug 9 and the damping adjusting block 7 are slowly separated upward from the damping liquid. During the movement of 10, the return speed is delayed, part of the vibration energy is absorbed, and the vibration effect of the high-speed punch is reduced.

When the high-speed punch needs different damping effects, rotate the center column of the damping adjustment block 7 to adjust the contact area between the damping plug, the damping adjustment block and the damping liquid, so as to obtain different damping effects.

The invention has a novel structure, adds a damping adjustment mechanism and a limit fixing mechanism, can adjust the size of the damping according to the working state of the high-speed punch, and adapt to different working states of the high-speed punch, so that the vibration isolator can meet the needs of the different stamping states of the high-speed punch; change; The external characteristics of the damping adjustment block are set, the damping adjustment block is set to an overall taper shape, and the cut-in groove feature is set at the bottom of the damping adjustment block, which is convenient for the adjustment of the up and down displacement of the damping adjustment block and the contact area with the damping liquid, so as to realize adjustable damping. .

Claims (10)

1. The utility model provides an adjustable isolator of high speed punch damping, includes upper plate (5) and lower plate (13), its characterized in that: the damping device is characterized in that a plurality of springs (2) are arranged between the upper base plate (5) and the lower base plate (13), a damping cylinder (11) with built-in damping liquid (10) is arranged in the middle of the lower base plate (13), a damping plug (9) with the lower end immersed in the damping liquid (10) is arranged on the lower side of the upper base plate (5), a damping adjusting block (7) is vertically connected to the middle of the upper base plate (5) through threads, and the lower end of the damping adjusting block (7) is immersed in the damping liquid (10) and can move up and down through rotation.

2. The adjustable vibration isolator for high speed punch press damping according to claim 1, wherein: the damping adjusting block (7) is integrally conical and is hollow inside.

3. The adjustable vibration isolator for high speed punch press damping according to claim 2, wherein: the outer surface of the damping adjusting block (7) is provided with a spiral groove and a vent hole (3) communicated with the inner hollow part.

4. The adjustable vibration isolator for high speed punch press damping according to claim 3, wherein: the surface of the spiral groove is provided with a characteristic of not penetrating through a concave pit or a bulge or a notch.

5. The adjustable vibration isolator for high speed punch press damping according to claim 4, wherein: the damping adjusting block (7) is characterized in that an inclined cut-in groove (15) is formed in the end face of the lower end of the damping adjusting block, and a protrusion is arranged on the outer side of the cut-in groove (15).

6. The adjustable vibration isolator for high speed punch press damping according to claim 1, wherein: the middle part of the lower side of the upper bottom plate (5) is provided with a thread positioning cylinder (6), the damping adjusting block (7) is in threaded connection with the inner side wall of the thread positioning cylinder (6), and the middle part of the damping adjusting block (7) is provided with a central column penetrating through the upper bottom plate (5).

7. The adjustable vibration isolator for high speed punch press damping of claim 6, wherein: the upper end of the damping adjusting block (7) is connected with at least one fixing screw (8) which penetrates through the upper bottom plate (5).

8. The adjustable vibration isolator for high speed punch press damping according to claim 1, wherein: the damping cylinder (11) is of a coaxial inner-outer layer structure, and the inner layer and the outer layer are communicated through a damping hole (14).

9. The adjustable vibration isolator for high speed punch press damping according to claim 1, wherein: the two ends of the lower side surface of the upper bottom plate (5) are vertically connected with limit screws (12), and the lower ends of the limit screws (12) are buckled with the lower bottom plate (13).

10. The adjustable vibration isolator for high speed punch press damping according to claim 1, wherein: the upper end of the spring (2) is connected with the upper base plate (5) through the upper spring base (4), and the lower end of the spring (2) is connected with the lower base plate (13) through the lower spring base (1).