阅读说明：本技术 一种用于五轴数控加工的可调式工装夹具及其控制方法 (Adjustable tool clamp for five-axis numerical control machining and control method thereof ) 是由 石磊 刘小健 熊小青 于海 王大建 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种用于五轴数控加工的可调式工装夹具及其控制方法,涉及车床夹具。包括圆柱形底座；四移动槽,呈十字型分布于圆柱形底座上且底部设有滑槽,每个移动槽中设有移动组件,移动组件包括：移动气缸,设于移动块下方且连接气泵；压紧气缸,设置于移动块内部且连接气泵；夹具,设于移动块内部且连接压紧气缸；压力传感器,设置于移动块一侧,用于实时检测移动块的径向夹持压力并发送至控制器；控制器连接压力传感器,用于持续接收径向夹持压力,控制移动气缸或压紧气缸运动。具有以下有益效果：设置四个移动组件,增加了夹持工件的大小适用范围,且可以适应不同形状的工件,设置防护层可以防止工件与夹具之间发生相对滑动。(The invention discloses an adjustable tool clamp for five-axis numerical control machining and a control method thereof, and relates to a lathe clamp. Comprises a cylindrical base; four shifting chutes, be cross distribution on cylindrical base and the bottom is equipped with the spout, be equipped with the removal subassembly in every shifting chute, the removal subassembly includes: the moving cylinder is arranged below the moving block and connected with the air pump; the pressing air cylinder is arranged inside the moving block and is connected with the air pump; the clamp is arranged in the moving block and connected with the pressing cylinder; the pressure sensor is arranged on one side of the moving block and used for detecting the radial clamping pressure of the moving block in real time and sending the radial clamping pressure to the controller; the controller is connected with the pressure sensor and is used for continuously receiving the radial clamping pressure and controlling the movement of the moving cylinder or the pressing cylinder. Has the following beneficial effects: the four moving assemblies are arranged, so that the size application range of the workpiece to be clamped is increased, the workpiece to be clamped can adapt to workpieces in different shapes, and the protective layer is arranged to prevent relative sliding between the workpiece and the clamp.)

1. The utility model provides a frock clamp with adjustable be used for five numerical control machining, its characterized in that, frock clamp with adjustable includes a cylindrical base, still includes:

the controller is arranged inside the cylindrical base;

the air pump is arranged inside the cylindrical base and is connected with the controller to act under the control of the controller;

the four moving grooves are arranged on the cylindrical base and distributed in a cross shape, and a sliding groove is formed in the bottom of each moving groove;

a moving assembly provided in each of the moving slots, the moving assembly including:

the first sliding block is arranged in the sliding groove;

the moving cylinder is arranged above the first sliding block and is connected with the air pump;

the supporting block is arranged above the moving cylinder;

the moving block is arranged above the supporting block and extends out of the top of the moving groove, and a second sliding block is arranged at the bottom of the moving block and is arranged in the moving groove;

the compaction air cylinder is arranged inside the moving block and is connected with the air pump;

one end of the clamp is arranged in the moving block and connected with the output end of the pressing cylinder, and the other end of the clamp extends out of a channel arranged on one side of the moving block, which faces the center of the cylindrical base;

the pressure sensor is arranged on one side, facing the center of the cylindrical base, of the moving block, is positioned below the clamp and is used for detecting and outputting the radial clamping pressure of the moving block in real time;

the controller is connected with the pressure sensor and used for continuously receiving the radial clamping pressure and generating a corresponding first control instruction to control the air pump to act when the radial clamping pressure is smaller than a preset pressure threshold value so as to control the moving cylinder to drive the moving assembly to move along the moving groove and towards the central position of the cylindrical base, so that the adjustable tool clamp is transversely clamped, and

and generating a corresponding second control instruction to control the air pump to act when the radial clamping pressure is not less than the pressure threshold value so as to control the pressing air cylinder to drive the fixture to move along the channel and towards the cylindrical base direction, thereby realizing the longitudinal clamping of the adjustable tool fixture.

2. The adjustable tool clamp for five-axis numerical control machining according to claim 1, wherein the controller is connected with a storage battery, and the storage battery is arranged inside the cylindrical base.

3. The adjustable tool clamp for five-axis numerical control machining according to claim 1, wherein a sponge layer is arranged on one side, close to the center of the cylindrical base, of the moving block.

4. The adjustable tool clamp for five-axis numerical control machining according to claim 1, wherein a protective layer is arranged on one side of the clamp, which is close to the cylindrical base.

5. The adjustable tooling clamp for five-axis numerical control machining according to claim 1, wherein the first sliding block is welded to the bottom of the moving cylinder.

6. The adjustable tooling clamp for five-axis numerical control machining according to claim 1, wherein the pressing cylinder is connected with the moving block through a bolt.

7. The adjustable tooling clamp for five-axis numerical control machining according to claim 1, wherein the second sliding block is connected with the moving block in a welding manner.

8. A control method of an adjustable tool holder for five-axis numerical control machining, which is applied to the adjustable tool holder for five-axis numerical control machining according to any one of claims 1 to 7, wherein a workpiece is placed on the cylindrical base in advance, comprising the steps of:

step S1, the controller controls the air pump to act so as to control the moving cylinder to drive the moving block to move along the moving groove and towards the workpiece direction, and the adjustable tool clamp can transversely clamp the workpiece;

step S2, the controller continuously receives the radial clamping pressure of the moving block, which is obtained by the real-time detection of the pressure sensor, during the movement of the moving block, and compares the radial clamping pressure with a preset pressure threshold:

if the radial clamping pressure is less than the pressure threshold, returning to the step S1;

if the radial clamping pressure is not less than the pressure threshold, turning to step S3;

and step S3, the controller controls the air pump to act so as to control the pressing air cylinder to drive the clamp to move along the channel and towards the workpiece direction, and the adjustable tool clamp can longitudinally clamp the workpiece.

Technical Field

The invention relates to the field of lathe fixtures, in particular to an adjustable tool fixture for five-axis numerical control machining and a control method thereof.

Background

The five-axis numerical control machining center is also called a five-axis machining center, is a machining center which is high in technological content and precision and is specially used for machining complex curved surfaces, and the machining center system has a very important influence on the industries of aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and the like in one country. At present, a five-axis linkage numerical control machining center system is the only means for solving the machining of impellers, blades, marine propellers, heavy generator rotors, steam turbine rotors, large diesel engine crankshafts and the like.

However, the clamp of the machining center can only be manually operated to clamp the workpiece, which causes troubles to users. Frock clamp with adjustable five-axis machining of impeller of current presses includes: the circular base plate is evenly provided with four guide grooves which are distributed in a cross shape, an adjustable positioning block capable of moving along the length direction of the guide grooves is assembled in each guide groove, the top ends of the four adjustable positioning blocks jointly form a supporting surface used for supporting the back of the impeller to be machined, a central hole is machined in the center of the circular base plate, a central positioning rod used for sleeving the impeller to be machined is assembled in the central hole, and a impeller locking structure is arranged on the upper portion of the central positioning rod.

The structure is complex, the installation is not easy, the clamping can be carried out manually only, the workload of users is increased, and further improvement is needed on the basis.

Disclosure of Invention

In order to solve the above problems, the present invention provides an adjustable tool clamp for five-axis numerical control machining, where the adjustable tool clamp includes a cylindrical base, and further includes:

the controller is arranged inside the cylindrical base;

the air pump is arranged inside the cylindrical bottom and is connected with the controller to act under the control of the controller;

the four moving grooves are arranged on the cylindrical base and distributed in a cross shape, and a sliding groove is formed in the bottom of each moving groove;

a moving assembly provided in each of the moving slots, the moving assembly including:

the first sliding block is arranged in the sliding groove;

the moving cylinder is arranged above the first sliding block and is connected with the air pump;

the supporting block is arranged above the moving cylinder;

the moving block is arranged above the supporting block and extends out of the top of the moving groove, and a second sliding block is arranged at the bottom of the moving block and is arranged in the moving groove;

the compaction air cylinder is arranged inside the moving block and is connected with the air pump; one end of the clamp is arranged in the moving block and connected with the output end of the pressing cylinder, and the other end of the clamp extends out of a channel arranged on one side of the moving block, which faces the center of the cylindrical base;

the pressure sensor is arranged on one side, facing the center of the cylindrical base, of the moving block, is positioned below the clamp, and is used for detecting and outputting the radial clamping pressure of the moving block in real time;

the controller is connected with the pressure sensor and used for continuously receiving the radial clamping pressure and generating a corresponding first control instruction to control the air pump to act when the radial clamping pressure is smaller than a preset pressure threshold value so as to control the moving cylinder to drive the moving assembly to move along the moving groove and towards the central position of the cylindrical base, so that the adjustable tool clamp is transversely clamped, and

and generating a corresponding second control instruction to control the air pump to act when the radial clamping pressure is not less than the pressure threshold value so as to control the pressing air cylinder to drive the fixture to move along the channel and towards the cylindrical base direction, thereby realizing the longitudinal clamping of the adjustable tool fixture.

Preferably, the controller is connected with a storage battery, and the storage battery is arranged inside the cylindrical base.

Preferably, a sponge layer is arranged on one side of the moving block, which is close to the center of the cylindrical base.

Preferably, a protective layer is arranged on one side, close to the cylindrical base, of the clamp.

Preferably, the first sliding block is welded to the bottom of the moving cylinder.

Preferably, the pressing cylinder is connected with the transverse moving block through a bolt.

Preferably, the second sliding block is connected with the moving block in a welding mode.

A control method of an adjustable tool clamp for five-axis numerical control machining is applied to the adjustable tool clamp for five-axis numerical control machining, a workpiece is placed on a cylindrical base in advance, and the method comprises the following steps:

step S1, the controller controls the air pump to act so as to control the moving cylinder to drive the moving block to move along the moving groove and towards the workpiece direction, and the adjustable tool clamp can transversely clamp the workpiece;

step S2, the controller continuously receives the radial clamping pressure of the moving block, which is obtained by the real-time detection of the pressure sensor, in the moving process of the moving block, and compares the radial clamping pressure with a preset pressure threshold value;

if the radial clamping pressure is less than the pressure threshold, returning to the step S1;

if the radial clamping pressure is not less than the pressure threshold, turning to step S3;

and step S3, the controller controls the air pump to act so as to control the pressing air cylinder to drive the clamp to move along the channel and towards the workpiece direction, so that the adjustable tool clamp can longitudinally clamp the workpiece.

Has the following beneficial effects:

the four moving assemblies are arranged, so that the size application range of the workpiece to be clamped is increased, the workpiece to be clamped can adapt to workpieces in different shapes, and the protective layer is arranged to prevent relative sliding between the workpiece and the clamp.

Drawings

FIG. 1 is a schematic structural view of an adjustable tooling fixture for five-axis NC machining according to a preferred embodiment of the present invention;

FIG. 2 is a top view of an adjustable tooling fixture for five-axis NC machining in accordance with a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of area A of FIG. 1;

FIG. 4 is a system control diagram of an adjustable tooling fixture for five-axis NC machining according to a preferred embodiment of the present invention;

fig. 5 is a flowchart illustrating a control method of an adjustable tool clamp for five-axis nc machining according to a preferred embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

In order to solve the above problems, the present invention provides an adjustable tooling fixture for five-axis numerical control machining, as shown in fig. 1 to 4, the adjustable tooling fixture includes a cylindrical base 1, and further includes:

the controller 8 is arranged inside the cylindrical base 1;

the air pump 3 is arranged inside the cylindrical base 1, and the air pump 3 is connected with the controller 8 to act under the control of the controller 8;

the four moving grooves 11 are arranged on the cylindrical base 1, the four moving grooves 11 are distributed in a cross shape, and the bottom of each moving groove 11 is provided with a sliding groove 12;

a moving assembly provided in each moving slot 11, the moving assembly comprising:

a first slider 21 disposed in the chute 12;

the moving air cylinder 22 is arranged above the first sliding block 21, and the moving air cylinder 22 is connected with the air pump 3; a support block 23 disposed above the moving cylinder 22;

the moving block 4 is arranged above the supporting block 23 and extends out of the top of the moving groove 11, the bottom of the moving block 4 is provided with a second sliding block 24, and the second sliding block 24 is arranged in the moving groove 11;

the pressing cylinder 5 is arranged inside the moving block 4, and the pressing cylinder 5 is connected with the air pump 3;

one end of the clamp 6 is arranged in the moving block 4 and is connected with the output end of the pressing cylinder 5, and the other end of the clamp 6 extends out of a channel which is arranged on one side of the moving block 4, which faces the central position of the cylindrical base 1;

the pressure sensor 7 is arranged on one side, facing the center of the cylindrical base 1, of the moving block 4, is positioned below the clamp 6, and is used for detecting and outputting the radial clamping pressure of the moving block 4 in real time;

the controller 8 is connected with the pressure sensor 7 and is used for continuously receiving the radial clamping pressure and generating a corresponding first control instruction to control the air pump 3 to act when the radial clamping pressure is smaller than a preset pressure threshold value so as to control the moving cylinder 22 to drive the moving assembly to move along the moving groove 11 and towards the central position of the cylindrical base 1, so that the adjustable tool clamp is transversely clamped, and

and generating a corresponding second control instruction to control the air pump 3 to act when the radial clamping pressure is not less than the pressure threshold value so as to control the compressing cylinder 5 to drive the fixture to move along the channel and towards the cylindrical base 1, thereby realizing the longitudinal clamping of the adjustable tool fixture.

Specifically, in the embodiment, the adjustable tooling fixture has a cylindrical base 1, moving grooves 11 are arranged on the cylindrical base 1 and are arranged in a crisscross manner, a sliding groove 12 is arranged at the bottom of each moving groove 11, moving components are arranged in the moving grooves 11 and the sliding grooves 12, and a moving cylinder 22 drives the moving components to move along the moving grooves 11 and the sliding grooves 12 to clamp a workpiece transversely; meanwhile, the clamp 6 is arranged inside the moving block 4 and connected with the compressing cylinder 5, and the clamp 6 is driven by the compressing cylinder 5 to longitudinally clamp the workpiece.

When the four moving blocks 4 on the cylindrical base 1 clamp a workpiece, the pressure sensor 7 continuously receives radial clamping pressure, when the radial clamping pressure is smaller than a preset pressure threshold value, the pressure sensor 7 transmits a signal to the controller 8, the controller 8 generates a control instruction to the air pump 3, the air pump 3 drives the moving cylinder 22 to move, and the moving cylinder 22 enables the first sliding block 21 and the moving blocks 4 to move in the sliding groove 12 and the moving groove 11 respectively to clamp the workpiece transversely;

when the radial clamping pressure is larger than or equal to the pressure threshold value, the controller 8 controls the air pump 3 to drive the pressing air cylinder 5 to realize that the clamp 6 moves towards the cylindrical base 1 to longitudinally clamp the workpiece.

In the preferred embodiment of the present invention, the controller 8 is connected to a storage battery 9, and the storage battery 9 is disposed inside the cylindrical base.

In the preferred embodiment of the present invention, a sponge layer 41 is disposed on one side of the moving block 4 near the center of the cylindrical base 1.

In the preferred embodiment of the present invention, a protective layer 61 is disposed on one side of the clamp 6 close to the cylindrical base 1.

Specifically, in this embodiment, the sponge layer 41 and the protective layer 61 function to protect the workpiece from being damaged by an excessive pressing force, and prevent the workpiece from sliding during clamping, which may cause a deviation of the processing position of the workpiece.

In the preferred embodiment of the present invention, the first slider 21 is welded to the bottom of the moving cylinder 22.

In the preferred embodiment of the present invention, the pressing cylinder 5 is connected to the moving block 4 by bolts.

In the preferred embodiment of the present invention, the second slider 24 is welded to the moving block 4.

A control method of an adjustable tool clamp for five-axis numerical control machining is applied to the adjustable tool clamp for five-axis numerical control machining, as shown in figure 5, a workpiece is placed on a cylindrical base in advance, and the method comprises the following steps:

step S1, the controller controls the air pump to act so as to control the moving cylinder to drive the moving block to move along the moving groove and towards the workpiece direction, and the adjustable tool clamp can transversely clamp the workpiece;

step S2, the controller continuously receives the radial clamping pressure of the moving block, which is obtained by the real-time detection of the pressure sensor, during the movement of the moving block, and compares the radial clamping pressure with a preset pressure threshold:

if the radial clamping pressure is smaller than the pressure threshold value, returning to the step S1;

if the radial clamping pressure is not less than the pressure threshold, turning to step S3;

and step S3, the controller controls the air pump to act so as to control the pressing cylinder to drive the clamp to move along the channel and towards the workpiece, and the adjustable tool clamp can longitudinally clamp the workpiece.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.