CN110340717A - Hydraulic counterweight device - Google Patents

Abstract

A kind of hydraulic counterweight device comprising body part, the hydraulic-driven portion on the body part, the knife tower moved up and down according to process requirements and the first, second chain being connected between hydraulic-driven portion and knife tower.The body part is equipped with first end face, is used to fix the oil cylinder fixed part in the hydraulic-driven portion, the valve group below the oil cylinder fixed part positioned at first end face lower end, the first, second counterweight support of the first, second chain is used to support set on the first, second guide rail of oil cylinder fixed part two sides and positioned at the top of the body part.The hydraulic-driven portion include oil cylinder on the oil cylinder fixed part, positioned at in-oil cylinder piston, with the drive block that is fixedly connected at the top of piston, the drive block two sides are equipped with the first, second sliding slot cooperated with the first, second guide rail on body part.One end of first, second chain is fixedly connected with the both ends of the drive block in hydraulic-driven portion, the other end is fixedly connected with knife tower.

Description

Hydraulic counterweight device

technical field

The invention relates to the field of numerically controlled machine tools, in particular to a hydraulic counterweight device for numerically controlled machine tools.

Background technique

The counterweight is also called weighting block, balance block. The main purpose of adding counterweight to CNC machine tools is to reduce the load of the motor and the screw, suppress the heating of the motor and the screw, so as to ensure the machining accuracy and prolong the life of the motor and the screw. At present, the commonly used counterweight devices include heavy hammer counterweights, cylinder counterweights and nitrogen counterweights. The main components of heavy hammer counterweights are chains and counterweights. With the increase of production capacity, more counterweights are required, and counterweights are Heavy blocks require steps such as casting, processing, and installation, and the production cycle is long. In the casting process, it will cause certain damage to the environment. Moreover, the chain is easy to be worn, elongated or even broken under the condition of long-term work, causing the heavy hammer to fall and cause a major safety accident. Although the cylinder counterweight has an air storage tank, it still has the defect of unstable processing caused by unstable pressure, and can only be used for rough machining or machine tools with low machining accuracy. Although nitrogen counterweight can meet the processing requirements of energy saving, fast and high precision, there is still nitrogen loss and nitrogen needs to be supplemented, but at this time, professional nitrogen cylinders and equipment are needed to supplement nitrogen. With the development of society and the needs of the market, we have developed a new type of counterweight with low price and light weight.

SUMMARY OF THE INVENTION

The purpose of the invention is to provide a low-cost and lightweight hydraulic counterweight device.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a hydraulic counterweight device, comprising a body part, a hydraulic drive part arranged on the body part, and a turret that moves in a direction perpendicular to the ground according to processing requirements and the first and second chains connected between the hydraulic drive part and the turret, the direction perpendicular to the ground is set as the up-down direction, and the body part is provided with a first end surface, located at the lower end of the first end surface for fixing the The oil cylinder fixing part of the hydraulic drive part, the valve group arranged under the oil cylinder fixing part, the first and second guide rails arranged on both sides of the oil cylinder fixing part and vertically arranged along the direction perpendicular to the ground, and the The top end of the body part is used to support the first and second counterweight brackets of the first and second chains, and the hydraulic drive part includes an oil cylinder arranged on the fixed part of the oil cylinder, a piston located in the oil cylinder, and a fixed connection with the top of the piston The drive block is provided with first and second chute on both sides of the drive block that cooperate with the first and second guide rails on the main body, and one end of the first and second chains is connected to the drive block of the hydraulic drive part. Both ends are fixedly connected, and the other end is fixedly connected with the turret.

As a further improved technical solution of the present invention, the body portion is further provided with first and second anti-collision fixing blocks located on both sides of the oil cylinder fixing portion.

As a further improved technical solution created by the present invention, the first and second guide rails are parallel to each other.

As a further improved technical solution created by the present invention, the valve group includes a solenoid valve and a hydraulic valve, the solenoid valve switches directions, and the hydraulic valve controls the flow and flow rate.

As a further improved technical solution of the present invention, the first anti-collision fixing block is located between the first guide rail and the cylinder fixing part, and the second anti-collision fixing block is located between the second guide rail and the cylinder fixing part.

As a further improved technical solution created by the present invention, the body portion is further provided with a second end surface opposite to the first end surface, and the turret is located in the second end surface.

As a further improved technical solution of the present invention, when the turret needs to go up, the oil cylinder of the hydraulic drive part drives the piston to move down, and the piston drives the drive block to move down on the path defined by the first and second guide rails, The downward movement of the driving block makes the first and second chains fixedly connected with the driving block tighten and move downward, so that the turret fixedly connected with the first and second chains moves upward.

As a further improved technical solution of the present invention, when the turret needs to go down, the solenoid valve is opened, and the pressure difference caused by the self-weight of the turret is used to return the hydraulic oil to the hydraulic oil tank to realize the downward movement of the turret.

Compared with the prior art, the hydraulic counterweight device created by the present invention greatly reduces the weight of the whole machine tool compared with the traditional counterweight block, making the machine tool less bulky and easy to handle and transport.

Description of drawings

FIG. 1 is a schematic structural diagram of a hydraulic counterweight device created by the present invention.

FIG. 2 is a schematic structural diagram of the hydraulic counterweight device created by the present invention from another perspective.

Detailed ways

In the following description, the direction perpendicular to the ground is defined as the up-down direction, and in the same plane, the direction perpendicular to the up-down direction is the left-right direction. Spatially relative terms such as "upper," "lower," "left," "right," "top," etc. may be used herein to describe the positional relationship between elements, so that the terms describing the positional relationship of one element to another element Instructions made easy. As used herein, the descriptor "parallel" is not absolutely parallel in the mathematical sense, allowing a certain angle of inclination. In addition, in this disclosure, when an element is referred to as being "on", "connected to" or "on" another element When "fixed to" another element, unless otherwise specified, the element may be directly or indirectly on, directly or indirectly connected or fixed to, the other element.

Referring to FIG. 1 and FIG. 2 , the present invention discloses a hydraulic counterweight device 100 for balancing the gravitational load of the turret 30 and reducing the load of the motor and the screw during the upward and downward process of the turret 30 . .

As shown in FIG. 1 , the hydraulic counterweight device 100 includes a main body 10 , a hydraulic driving part 20 arranged on the main body 10 , a turret 30 that moves up and down according to processing requirements, and is connected between the hydraulic driving part 20 and the turret 30 . The first and second chains 40, 50.

As shown in FIG. 2 , the body portion 10 is substantially in the shape of a cuboid, and is provided with a first end face 101 and a second end face 102 opposite to the first end face 101 , and a cylinder fixing portion located at the lower end of the first end face 101 for fixing the hydraulic drive portion 20 . 11. The first and second anti-collision fixing blocks 12 and 13 located on the left and right sides of the cylinder fixing part 11, the valve group 14 located under the second anti-collision fixing block 13, and the left and right sides of the cylinder fixing part 11 and The first and second guide rails 15 and 16 vertically arranged in the up-down direction and the first and second counterweight brackets 17 and 18 at the top of the main body 10 are used to support the first and second chains 40 and 50 . The first and second guide rails 15 and 16 are parallel to each other. In the left-right direction, the first anti-collision fixing block 12 is located between the first guide rail 15 and the cylinder fixing part 11 , and the second anti-collision fixing block 13 is located between the second guide rail 16 and the cylinder fixing part 11 . Between the cylinder fixing parts 11 , the turret 30 is located in the second end surface 102 . . The valve group 14 includes a solenoid valve and a hydraulic valve, the solenoid valve switches forward and reverse directions, and the hydraulic valve controls the flow and flow rate.

The hydraulic driving part 20 includes an oil cylinder 21 provided on the oil cylinder fixing part 11 , a piston 22 located in the oil cylinder 21 , and a driving block 23 fixedly connected to the top of the piston 22 . Both sides of the driving block 23 are provided with first and second sliding grooves 231 and 232 which are matched with the first and second guide rails 15 and 16 on the main body 10 .

One end of the first and second chains 40 and 50 is fixedly connected to both ends of the driving block 23 of the hydraulic driving part 20 , and the other end is fixedly connected to the turret 30 .

When the turret 30 needs to go up, the oil cylinder 21 of the hydraulic drive part 20 drives the piston 22 to move down, the piston 22 drives the drive block 23 to move down on the path defined by the first and second guide rails 15 and 16, and the drive block 23 moves down The movement makes the first and second chains 40 and 50 fixedly connected with the driving block 23 tighten and move downward, so that the turret 30 fixedly connected with the first and second chains 40 and 50 moves upward, and the first and second chains 40 and 50 move upward. The second anti-collision fixing blocks 12 and 13 are used to prevent the driving block 23 from moving downward excessively. When the turret 30 needs to go down, the solenoid valve is opened, and the pressure difference caused by the self-weight of the turret 30 is used to return the hydraulic oil to the hydraulic oil tank to realize the downward movement of the turret 30 .

The utility model uses a hydraulic counterweight device to replace the traditional counterweight block, which greatly reduces the weight of the whole machine tool, makes the machine tool less bulky, and is easy to handle and transport.

The above embodiments are only used to illustrate the invention and do not limit the technical solutions described in the invention. The understanding of this specification should be based on those skilled in the art. Description, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that those skilled in the art can still modify or equivalently replace the present invention, and all The technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims (8)

1. A hydraulic counterweight device, characterized in that it comprises a body part, a hydraulic drive part arranged on the body part, a turret that moves in a direction perpendicular to the ground according to processing requirements, and a turret connected to the hydraulic drive part and the hydraulic drive part. For the first and second chains between the turrets, the direction perpendicular to the ground is set as the up-down direction. The main body is provided with a first end surface and an oil cylinder fixing part located at the lower end of the first end surface for fixing the hydraulic drive part. , the valve group arranged under the fixed part of the oil cylinder, the first and second guide rails arranged on both sides of the fixed part of the oil cylinder and vertically arranged along the direction perpendicular to the ground, and the top of the main body part for supporting The first and second counterweight brackets of the first and second chains, the hydraulic driving part includes an oil cylinder arranged on the fixed part of the oil cylinder, a piston located in the oil cylinder, and a driving block fixedly connected with the top of the piston; The two sides of the block are provided with first and second sliding grooves that cooperate with the first and second guide rails on the body part, one end of the first and second chains is fixedly connected with the two ends of the driving block of the hydraulic driving part, and the other One end is fixedly connected with the turret. 2 . The hydraulic counterweight device according to claim 1 , wherein the body portion is further provided with first and second anti-collision fixing blocks located on both sides of the oil cylinder fixing portion. 3 . 3 . The hydraulic counterweight device according to claim 1 , wherein the first and second guide rails are parallel to each other. 4 . 4 . The hydraulic counterweight device according to claim 3 , wherein the valve group comprises a solenoid valve and a hydraulic valve, the solenoid valve switches directions, and the hydraulic valve controls the flow and flow rate. 5 . 5 . The hydraulic counterweight device according to claim 4 , wherein the first anti-collision fixing block is located between the first guide rail and the cylinder fixing part, and the second anti-collision fixing block is located between the second guide rail and the cylinder fixing part. 6 . between the fixed parts of the cylinder. 6 . The hydraulic counterweight device according to claim 5 , wherein the main body is further provided with a second end surface opposite to the first end surface, and the turret is located in the second end surface. 7 . 7 . The hydraulic counterweight device according to claim 6 , wherein when the turret needs to go up, the oil cylinder of the hydraulic drive part drives the piston to move downward, and the piston drives the drive block to move in the first and second steps. 8 . The path defined by the two guide rails moves upward and downward, and the downward movement of the driving block makes the first and second chains fixedly connected with the driving block tighten and move downward, so that the turret fixedly connected with the first and second chains moves toward the up exercise. 8. A hydraulic counterweight device according to claim 6, characterized in that: when the turret needs to go down, the solenoid valve is opened, and the hydraulic oil is returned to the hydraulic oil tank by using the pressure difference caused by the self-weight of the turret , to realize the downward movement of the turret.