CN206509812U - New type auto tool changing device - Google Patents

Abstract

The utility model provides a new type of automatic tool changing device, which includes a tool magazine, which is provided with a tool seat for loading knives. Connection, the input end of the first worm gear pair is connected with the output shaft of the first stepping motor; a manipulator for tool change operation is provided on the side of the tool magazine, and the manipulator is vertically fixedly connected with the cylindrical tube, and the cylindrical tube is fixedly set on the surface of the nut. The nut cooperates with one end of the screw, the other end of the screw is connected with the output end of the second worm gear pair, the input end of the second worm gear pair is connected with the output shaft of the second stepper motor, and the cylindrical tube is fixed with the first permanent pins distributed on both sides of the nut. The magnet and the second permanent magnet are provided with a first electromagnet on a side close to the first permanent magnet, and a second electromagnet is provided on a side close to the second permanent magnet; Processing costs.

Description

New automatic tool changer

technical field

The utility model relates to the field of tool changing equipment for machine tools, in particular to a novel automatic tool changing device.

Background technique

One of the important contents of improving the efficiency of CNC machine tools is to shorten the non-cutting time. For this reason, CNC machine tools with automatic tool changer can develop rapidly. The automatic tool changer has been widely used in various multi-process CNC machine tools, such as boring and milling machines, milling machines, lathes and combined machine tools, etc. It not only improves the production efficiency of machine tools, but also expands the scope of use of single-function CNC machine tools. Multi-process processing is completed in one installation, which greatly reduces the number of parts installation and positioning, thereby improving the processing accuracy.

The existing automatic tool changer has the following basic types:

1) Rotary tool holder tool change device: This device must have good strength and rigidity to withstand the cutting resistance during processing. The position of the tool is not manually adjusted during the machining process, so it is necessary to choose a reliable positioning scheme and a reasonable positioning structure to ensure that the rotary tool holder has the highest possible repeat positioning accuracy after each indexing.

2) Multi-spindle turret head tool change device: This tool change device has a small number of stored tools and is suitable for processing simple workpieces. Due to the limitation of the space position, the structure of the main shaft part cannot be designed very solidly, thus affecting the rigidity of the main shaft system.

3) Automatic tool changer for manipulators: This device requires a very complicated tool selection process and a tool recognition device, etc., which will reduce the efficiency of the tool changer.

Therefore, it is necessary to design a brand-new tool changing device to make up for some deficiencies of the existing technology, so that the processing efficiency of the CNC machine tool can be effectively improved, thereby saving the processing cost.

Contents of the invention

The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a new type of automatic tool changer, which can effectively improve the processing efficiency of the numerical control machine tool and save the processing cost.

In order to solve the above technical problems, the utility model adopts the following technical solution: a new type of automatic tool changer, including a tool magazine, the tool magazine is provided with a tool holder for loading a tool, and the tool magazine is connected to the rotating shaft One end is vertically fixedly connected, the other end of the rotating shaft is connected to the output end of the first worm gear pair, and the input end of the first worm gear pair is connected to the output shaft of the first stepping motor;

One side of the tool magazine is provided with a manipulator for tool change operations, the manipulator is vertically fixedly connected to the cylindrical tube, the cylindrical tube is fixedly sleeved on the surface of the nut, the nut cooperates with one end of the screw rod, and the screw rod The other end is connected with the output end of the second worm gear pair, the input end of the second worm gear pair is connected with the output shaft of the second stepper motor, and the first permanent magnet and the second permanent magnet distributed on both sides of the nut are fixed on the cylindrical tube. For the permanent magnet, a first electromagnet is arranged on a side close to the first permanent magnet, and a second electromagnet is arranged on a side close to the second permanent magnet.

Preferably, grippers are provided at both ends of the manipulator, and the grippers include two third permanent magnets symmetrically arranged at both ends of the gripper, and two third electromagnets are symmetrically arranged inside the two third permanent magnets.

Preferably, the tool holders of the tools are provided with numbers corresponding to each other.

Beneficial effects of the utility model: the tool magazine of the utility model can store a large number of tools, and can process complex parts. There is no tool identification device and tool selection process, which improves the tool changing efficiency, greatly shortens the time for the spindle to stop working, and effectively improves the numerical control efficiency. The processing efficiency of the machine tool saves the processing cost.

Description of drawings

Figure 1 is a schematic structural diagram of a new automatic tool changer;

Fig. 2 is the structural representation of manipulator among Fig. 1;

In the figure, tool magazine 1, tool holder 1.1, tool 1.2, rotating shaft 2, first worm gear pair 3, first stepping motor 4, manipulator 5, gripper 5.1, third permanent magnet 5.1.1, third electromagnet 5.1.2, cylindrical tube 6, first permanent magnet 6.1, second permanent magnet 6.2, nut 7, screw 8, second worm gear pair 9, second stepper motor 10, first electromagnet 11, second electromagnet 12 , Main shaft 13, main shaft box 14.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1 and 2, a new type of automatic tool changer includes a tool magazine 1, which is provided with a tool holder 1.1 for loading a tool 1.2, and one end of the tool magazine 1 and a rotating shaft 2 Vertical fixed connection, the other end of the rotating shaft 2 is connected to the output end of the first worm gear pair 3, and the input end of the first worm gear pair 3 is connected to the output shaft of the first stepping motor 4;

One side of the tool magazine 1 is provided with a manipulator 5 for changing the tool 1.2. The manipulator 5 is vertically and fixedly connected to the cylindrical tube 6, and the cylindrical tube 6 is fixedly fitted on the surface of the nut 7. The nut 7 and the One end of the screw rod 8 cooperates with each other, the other end of the screw rod 8 is connected with the output end of the second worm gear pair 9, the input end of the second worm gear pair 9 is connected with the output shaft of the second stepping motor 10, and the cylindrical tube 6 is fixedly installed There are first permanent magnets 6.1 and second permanent magnets 6.2 distributed on both sides of the nut 7, a first electromagnet 11 is provided near the side of the first permanent magnet 6.1, and a second electromagnet 11 is provided near the side of the second permanent magnet 6.2. Electromagnet 12. When the first electromagnet 11 and the second electromagnet 12 were energized like this, the magnetic force produced by the two electromagnets produced an attractive force to the first permanent magnet 6.1 or the second permanent magnet 6.2 simultaneously, so that the manipulator 5 was opposite to the first electromagnet 11 and the second permanent magnet 6.2. The second electromagnet 12 is stationary, and the rotation of the screw rod 8 will cause the manipulator 5 to rise or fall vertically. When the first electromagnet 11 and the second electromagnet 12 are powered off, the manipulator 5 will rotate along with the screw rod 8 .

Preferably, both ends of the manipulator 5 are provided with grippers 5.1, and the grippers 5.1 include two third permanent magnets 5.1.1 symmetrically arranged at both ends of the gripper 5.1, and the two third permanent magnets 5.1.1 Two third electromagnets 5.1.2 are provided symmetrically. In this way, when the tool 1.2 needs to be clamped, the tool 1.2 is placed between the two third electromagnets 5.1.2, and when the current is passed to the two third electromagnets 5.1.2, a magnetic force is generated between the two electromagnets Attract each other, and at the same time, the third permanent magnet 5.1.1 produces a repulsive force to the third electromagnet 5.1.2, so as to clamp the cutter 1.2 tightly; when the third electromagnet 5.1.2 is powered off, the third permanent magnet 5.1 .1 produces an attractive force on the third electromagnet 5.1.2, causing the gripper 5.1 to release the tool 1.2.

Preferably, the tool seats 1.1 of the tool 1.2 are provided with corresponding numbers. In the present embodiment, before all cutters 1.2 are loaded into tool magazine 1, these cutters 1.2 are coded respectively A, B, C,,,; Knife holder 1.1 code a, b, c,,,; Cutter 1.2 and cutter holder 1.1 Numbers are one-to-one correspondence, the tool 1.2 installed on the spindle 13 is temporarily numbered as 0, and the corresponding information of these tools 1.2 and tool holder 1.1 is input into the control system of the CNC machine tool and stored. Assuming that the tool 1.2 is changed to the spindle 13, the tool 1.2 corresponding to the tool holder 1.1 is 0, and the system automatically updates the tool 1.2 information of the tool holder 1.1. By analogy, no matter whether the machine tool is powered off or not, this information will always be kept, unless it is artificially changed.

The working process of this embodiment is as follows:

1) On the operation panel of the CNC machine tool, the required tool 1.2 is selected manually or automatically by the system according to the stored tool magazine 1 information, and then the system sends an electric pulse signal to the first stepping motor 4 to make the tool 1.2 rotate to face the manipulator Stop after position 5.

2) The system automatically energizes the first electromagnet 11 and the second electromagnet 12, and then sends an electric pulse signal to make the stepping motor 11 rotate forward, and the second stepping motor 10 stops working after the manipulator 5 falls vertically to a certain distance. The gripper 5.1 then works to clamp the tool 1.2.

3) Afterwards, the second stepper motor 10 reverses to make the manipulator 5 rise vertically, and at the same time, the spindle box 14 moves to the right above the gripper 5.1 and then stops.

4) When the tool 1.2 clamped by the gripper 5.1 comes out from the tool seat 1.1, the second stepping motor 10 stops working, and the gripper 5.1 can just clamp the tool 1.2 of the main shaft 13 at this moment.

5) After the gripper 5.1 clamps the tool 1.2 of the spindle 13, the spindle 13 releases the tool 1.2 and the spindle 13 rises a certain distance.

6) The first electromagnet 11 and the second electromagnet 12 are powered off, and then the second stepper motor 10 rotates forward (or reverse), at this time, the manipulator 5 will rotate with the screw 8, and then the first electromagnet 11 , The second electromagnet 12 is energized to make the manipulator 5 stop rotating, at this moment the manipulator 5 has just rotated 180 degrees.

7) The second stepping motor 10 stops working, the main shaft 13 falls, clamps the tool 1.2 on the gripper 5.1, then the gripper 5.1 is released, the main shaft 13 rises and leaves the tool changing position to continue processing parts.

8) The second stepping motor 10 rotates forward to make the manipulator 5 fall vertically for a certain distance, and then the gripper 5.1 works to release the tool 1.2, so that the tool 1.2 falls to the empty tool holder 1.1.

9) The second stepper motor 10 reverses to make the manipulator 5 rise for a certain distance and stop rotating, and at the same time stop energizing the first electromagnet 11 and the second electromagnet 12 .

10) The system automatically updates the tool magazine 1 information.

The above-mentioned embodiments are only preferred technical solutions of the present utility model, and should not be regarded as limitations on the present utility model. The embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other if there is no conflict. The scope of protection of the utility model shall be the technical solution described in the claims, including the equivalent replacements of the technical features in the technical solution described in the claims. That is, equivalent replacement and improvement within this scope are also within the protection scope of the present utility model.

Claims (3)

1. a kind of new type auto tool changing device, including tool magazine（1）, the tool magazine（1）Interior be provided with is used to load cutter（1.2）Knife Seat（1.1）, it is characterised in that；The tool magazine（1）With rotary shaft（2）One end is vertically fixedly connected, the rotary shaft（2）The other end With the first worm gear（3）Output end is connected, first worm gear（3）Input and the first stepper motor（4）Output shaft is connected；

The tool magazine（1）Side, which is provided with, to be used for cutter（1.2）Carry out the manipulator of tool changing operation（5）, the manipulator（5）With Cylindrical tube（6）Vertically it is fixedly connected, the cylindrical tube（6）Fixed cover is loaded on nut（7）Surface, the nut（7）With screw rod（8） One end cooperates, the screw rod（8）The other end and the second worm gear（9）Output end is connected, second worm gear（9）Input End and the second stepper motor（10）Output shaft is connected, the cylindrical tube（6）On be fixed with and be distributed in nut（7）The first of both sides Permanent magnet（6.1）With the second permanent magnet（6.2）, close to the first permanent magnet（6.1）Side be provided with the first electromagnet （11）, close to the second permanent magnet（6.2）Side be provided with the second electromagnet（12）.

2. new type auto tool changing device according to claim 1, it is characterised in that：The manipulator（5）Two ends are equipped with Handgrip（5.1）, the handgrip（5.1）Including being symmetrically set in handgrip（5.1）Two the 3rd permanent magnets at two ends（5.1.1）, two Individual 3rd permanent magnet（5.1.1）Inside it is arranged with two the 3rd electromagnet（5.1.2）.

3. new type auto tool changing device according to claim 1, it is characterised in that：The cutter（1.2）Tool rest（1.1） It is equipped with numbering in correspondence with each other.