CN208067866U - Tool changing mechanism of processing machine - Google Patents

Abstract

The utility model discloses a knife-breaking mechanism of a processing machine, which comprises a main shaft unit, a knife-breaking unit and a knife-breaking unit, wherein the main shaft unit is provided with a base and a processing main shaft, the knife-breaking unit is provided with a transmission set, the transmission set is provided with a first chain wheel, a second chain wheel, a chain and a transmission piece, the free end of the transmission piece is provided with a first transmission part, the knife-breaking unit is provided with a base, a cam and a knife-breaking arm, one end of the cam is provided with a second transmission part, the end surface of the other end of the cam is provided with a ring groove in a concave way, one end of the knife-breaking arm is provided with a force-applying part, the other end of the knife-breaking arm is provided with a stress part, one side of the stress part is provided with a convex part, the convex part is inserted into the ring groove of the cam, when the first transmission part is connected with the second transmission part, the transmission set transmits, when the cam rotates for a preset angle again, the cutter releasing arm returns to the original position and is separated from the machining main shaft, so that the main shaft can clamp the cutter.

Description

Tool changing mechanism of processing machine

technical field

The utility model relates to the technical field of processing machines, and more specifically refers to a tool changing mechanism of a processing machine.

Background technique

The tool changing mechanism of conventional processing machines mainly uses a cam as an external power to strike a tool arm connected to the main shaft, so as to release the tool for tool changing. However, in this structure, the cam and the main shaft are not combined on the same substrate, so the cam is an external force, and when the knife arm hits, it is easy to damage the main shaft and affect the machining accuracy.

Therefore, as disclosed in Taiwan Patent No. M541922, the main method is to integrate the cam and the main shaft into the same matrix to reduce the impact force between the cam and the knife arm, thereby avoiding the effect of affecting the machining accuracy. However, the disclosed structure of this patent is to arrange a plurality of loosening gears in the tool changing unit, so as to transmit power to the cam of the knife unit through the connection between the loosening gears and the motor, but multiple The structure of the uncutter gear is too large, which will not only result in too large overall volume, but also increase the manufacturing cost considerably. In addition, in the structure disclosed in this patent, after being pushed by the cam, the release arm of the knife unit must be returned to its original position by the elastic force of the spring, but the spring is prone to elastic fatigue under long-term use, resulting in the need Downtime for replacement, but there is a problem of increasing consumables and reducing processing time.

In view of this, the tool changing mechanism of conventional processing machines has problems such as excessive volume, increased manufacturing cost, increased consumption of consumables, and wasted processing time.

Utility model content

The main purpose of the utility model is to provide a tool changing mechanism of a processing machine, which can effectively reduce the volume.

Another object of the present invention is to provide a tool changing mechanism of a processing machine, which can reduce the manufacturing cost.

Another object of the present utility model is to provide a tool changing mechanism of a processing machine, which reduces the consumption of consumables.

Another object of the present utility model is to provide a tool changing mechanism of a processing machine, which can reduce downtime and facilitate smooth processing operations.

Based on this, the utility model mainly adopts following technical means to realize the above-mentioned purpose.

A tool changing mechanism of a processing machine, mainly comprising: a main shaft unit having a base and a processing main shaft arranged on the base; a tool changing unit having a carrier and a tool arranged on the carrier A motor, a cam group connected with the motor, a tool change rod connected with the cam group and a transmission group, the rotational power of the motor is transmitted to the cam group to make the cam group rotate, and at the same time drive the tool changer The knife bar rotates and lifts up and down. The transmission group has a first sprocket, a second sprocket, a chain and a transmission member. The first sprocket is connected to one end of the cam group to move in unison. The two sprockets are pivotally arranged on the carrier, the chain is looped and connected between the first sprocket and the second sprocket, and the rotational power of the first sprocket is transmitted to the second sprocket through the chain, The transmission part is connected to one end of the second sprocket and moves together with the second sprocket. The free end of the transmission part has a first transmission part; Rotating cam and a knife release arm, the seat body is fixed on the base of the spindle unit, the cam is pivotally arranged on the seat body, one end of the cam has a second transmission part at the center of the axis, and the other end of the cam A ring groove is recessed on the end surface of the arm, one end of the loosening arm has a force applying part, the other end of the releasing arm has a force receiving part, a convex part is formed on one side of the force receiving part, and the force applying part is located on the spindle unit Around the machining spindle, the force-receiving part is located at the corresponding position on the peripheral surface of the cam, and the convex part is inserted into the ring groove of the cam; when the first transmission part of the tool changing unit and the When the two transmission parts are connected, the transmission group transmits the rotational power of the motor to the cam, so that the cam rotates at a predetermined angle and pushes against the force-receiving part of the knife release arm, and the force applied by the knife release arm The part acts on the processing spindle to facilitate the processing spindle to release the tool. When the cam rotates a predetermined angle again, it drives the release arm to return to the original position and break away from the processing spindle to facilitate the processing spindle to clamp the tool.

Further, when the base of the spindle unit moves upwards, the first transmission part of the tool changing unit is connected with the second transmission part of the knife driving unit to move together; when the base of the spindle unit moves downwards, the The first transmission part of the tool changing unit is disengaged from the second transmission part of the knife striking unit and does not move.

Further, the first transmission part of the tool changing unit is a bump, and the second transmission part of the knife driving unit is a groove.

Further, the first transmission part of the tool changing unit is a groove, and the second transmission part of the knife striking unit is a bump.

After adopting the above-mentioned technical means, the tool changing mechanism of the processing machine of the present utility model adopts the structural design of the main shaft unit, the tool changing unit and the knife making unit, and the main shaft unit has a base and a processing main shaft arranged on the base; The tool changing unit has a carrier, a motor arranged on the carrier, a cam group connected with the motor, a tool change rod connected with the cam group and a transmission group, and the rotational power of the motor is transmitted to The cam group is used to rotate the cam group and simultaneously drive the tool change rod to rotate and lift up and down. The transmission group has a first sprocket, a second sprocket, a chain and a transmission member. The first The sprocket is connected to one end of the cam group to move together, the second sprocket is pivotally arranged on the carrier, and the chain loop is connected between the first sprocket and the second sprocket, so that the The rotational power of the first sprocket is transmitted to the second sprocket. The transmission member is connected to one end of the second sprocket and moves together with the second sprocket. The free end of the transmission member has a first transmission Department; a knife unit, with a base, a cam and a loose arm, the base is fixed on the base of the spindle unit, the cam is pivoted on the base, and can be driven by external force to rotate, the There is a second transmission part at the axial center of one end of the cam, and a ring groove is recessed on the end surface of the other end of the cam. One end of the loose knife arm has a force applying part, and the other end has a force receiving part, and one side of the force receiving part A convex part is formed, the force applying part is located around the machining spindle of the spindle unit, the force receiving part is located at the corresponding position on the peripheral surface of the cam, and the convex part is inserted into the ring groove of the cam; when the tool change When the first transmission part of the unit is connected with the second transmission part of the knife beating unit, the transmission group transmits the rotational power of the motor to the cam, so that the cam rotates at a predetermined angle and pushes against the opening of the knife release arm. On the force-bearing part, the force-applying part of the release arm acts on the processing spindle to facilitate the release of the processing spindle. When the cam rotates a predetermined angle again, it drives the release arm to return to its original position. It is separated from the processing spindle to facilitate the processing spindle to clamp the tool; thereby achieving the effects of small size, low cost, reduced consumption of consumables, no need to stop to replace consumables, and improve processing efficiency.

Description of drawings

Fig. 1 is a three-dimensional assembled view of a preferred embodiment of the present invention.

Fig. 2 is a three-dimensional assembled view of partial components of the embodiment shown in Fig. 1 .

FIG. 3 is a schematic diagram of the actions of partial components of the embodiment shown in FIG. 1 .

FIG. 4 is a schematic diagram of the actions of partial components of the embodiment shown in FIG. 1 .

Fig. 5 is a three-dimensional assembled view of partial components of the embodiment shown in Fig. 1 .

FIG. 6 is an exploded perspective view of partial components of the embodiment shown in FIG. 1 .

FIG. 7 is a schematic diagram of the action of the embodiment shown in FIG. 1 .

FIG. 8 is a schematic diagram of the action of the embodiment shown in FIG. 1 .

FIG. 9 is a schematic diagram of the action of the embodiment shown in FIG. 1 .

FIG. 10 is a schematic diagram of the action of the embodiment shown in FIG. 1 .

【Symbol Description】

Tool changing mechanism 100 of processing machine

Spindle unit 10

Base 11 Machining spindle 12

Tool change unit 20

Carrier 21 Motor 22

Cam group 23 Tool change lever 24

Transmission group 25 first sprocket 251

Second sprocket 252 Chain 253

Transmission member 254 First transmission part 255

Knife unit 30

Seat 31 Cam 32

Second transmission part 321 Ring groove 322

Knife release arm 33 force application part 331

Force receiving part 332 Convex part 333

Tool magazine 90

Knife 91 Knife 92.

Detailed ways

In order to have a further understanding and recognition of the features of the utility model and its characteristics, the following embodiments are listed below and are described as follows in conjunction with the drawings:

Please refer to FIG. 1 to FIG. 10 , which is a tool changing mechanism 100 of a processing machine provided by a preferred embodiment of the present invention, which mainly includes a spindle unit 10 , a tool changing unit 20 and a tool changing unit 30 ,in:

Please refer to FIG. 1 , the spindle unit 10 has a base 11 and a machining spindle 12 disposed on the base 11 .

Please refer to FIGS. 1 to 4 , the tool changing unit 20 is located adjacent to the spindle unit 10 , the tool changing unit 20 has a carrier 21 , a motor 22 arranged on the carrier 21 , and a motor 22 Connected cam group 23, a tool change lever 24 connected with this cam group 23 and a transmission group 25, the rotational power when the motor 22 is running is transmitted to this cam group 23, so that this cam group 23 rotates, and simultaneously drives The tool changing rod 24 rotates and lifts up and down, so as to carry out clamping and tool changing operations. The transmission group 25 has a first sprocket 251, a second sprocket 252, a chain 253 and a transmission member 254. The first sprocket 251 is connected to one end of the cam set 23 to move in unison. The second sprocket 252 is pivotally mounted on the carrier 21. The chain 253 turns around and is connected to the first sprocket 251 and the second chain. Between the wheels 252, the rotational power of the first sprocket 251 is transmitted to the second sprocket 252 through the chain 253. The transmission member 254 is connected to one end of the second sprocket 252 and is connected with the second sprocket. 252, the free end of the transmission member 254 has a first transmission part 255, and the first transmission part 255 is a bump.

Please refer to Fig. 1 and Fig. 5 and Fig. 6, this cutter unit 30 has a base body 31, a cam 32 and a knife loosening arm 33, the base body 31 is fixed on the base 11 of the spindle unit 10, the cam 32 is pivotally arranged on the base body 31, and can be driven by external force to rotate. The axial center position of one end of the cam 32 has a second transmission part 321, and the second transmission part 321 is a groove. The end surface of the other end of the cam 32 There is a ring groove 322 in the upper depression. One end of the loose knife arm 33 has a force applying part 331, and the other end has a force receiving part 332. A convex part 333 is formed on one side of the force receiving part 332. The force applying part 331 is located at Around the machining spindle 12 of the spindle unit 10 , the force-receiving portion 332 is located at a corresponding position on the peripheral surface of the cam 32 , and the protrusion 333 is inserted into the ring groove 322 of the cam 32 .

Therefore, the above is the introduction of each component and its assembly method of the tool changing mechanism 100 of a processing machine provided by a preferred embodiment of the present invention, and then its use characteristics are introduced as follows:

First of all, when it is desired to perform a tool change operation, the base 11 of the spindle unit 10 will move upwards, so that the first transmission part 255 of the tool change unit 20 is connected with the second transmission part 321 of the knife unit 30. Move (that is, snap into the groove by the bump), as shown in Figure 1.

Next, since the motor 22 of the tool changing unit 20 is in operation, the cam group 23 will simultaneously drive the tool changing lever 24 to be in a tool clamping position. The power of the motor 22 is also transmitted to the second transmission part 321 of the cam 32 of the knife unit 30 through the transmission group 25 at the same time, so that the cam 32 rotates at a predetermined angle, and faces the loose knife with its circumference. The force receiving portion 332 of the arm 33 is pushed, as shown in FIG. The clamped tool 91 is released, and is clamped by the tool change rod 24 at the clamping position and then rotates downwards, and the tool change rod 24 will go up again to place the tool 92 in the machining spindle 12. This is to replace one of the cutters 92 in the tool magazine 90 with the loosened cutter 91 of the machining spindle 12 (as shown in FIG. 8 ), and after the cutter change, the convex portion 333 of the loosening arm 33 will Then be guided by the ring groove 322 when the cam 32 rotates another angle, and disengage from the machining spindle 12 (as shown in Figure 9) and return to the original position, to wait for the next tool change operation, and complete After the tool changing operation, the main shaft unit 10 will descend to process, so that the second transmission part 321 of the tool changing unit 30 is separated from the first transmission part 255 of the tool changing unit 20 and does not move (as shown in Figure 10 shown).

Therefore, because the utility model utilizes the transmission group composed of the chain and the sprocket as the transmission interface for transmitting the power of the tool changing unit to the tool changing unit, and the transmission group composed of the chain and the sprocket is compared with the conventional For most gear connection methods, it has the advantages of small size and low cost.

Secondly, because in the utility model, the loose knife arm 33 is connected with the ring groove 322 of the cam 32 by its convex portion 333 and moves simultaneously, so the position can be restored without the help of a spring, so the utility model is convenient The use of consumables such as springs can be eliminated, thereby reducing the consumption of consumables and improving processing efficiency because there is no need to stop the machine to replace consumables.

In addition, although in the above embodiment, the first transmission part 255 of the tool changing unit 20 is a protrusion, and the second transmission part 321 of the knife driving unit 30 is a groove. However, in fact, the first transmission part 255 of the tool changing unit 20 can also be a groove, and the second transmission part 321 of the knife driving unit 30 is a protrusion, which can also achieve the same effect.

The above disclosures are only preferred embodiments provided by the utility model, and are not intended to limit the scope of implementation of the utility model. All equivalent changes made by those skilled in the art according to the utility model should belong to The scope covered by the utility model.

Claims (4)

1. a kind of processing machine beats cutter-exchange mechanism, which is characterized in that include mainly:

One main axle unit, the machining spindle being set to a pedestal and one on the pedestal;

One tool changing unit, with a carrier, one be set on the carrier motor, one connect with the motor cam set, one and The changing knife rod and a transmission group of cam set connection, the rotary power when motor running are transferred to the cam set, make the cam Group rotation, and the changing knife rod is driven to carry out rotation and oscilaltion simultaneously, which has one first sprocket wheel, one second chain Wheel, a chain and a driving member, first sprocket wheel are connected to one end of the cam set in moving, which is hubbed at this On carrier, the chain circle is around being connected between first sprocket wheel and second sprocket wheel, by the chain by the rotation of first sprocket wheel Power is transferred on second sprocket wheel, which is connected to the second sprocket wheel one end, and with second sprocket wheel with dynamic, the transmission The free end of part has one first driving section;

One forges a knife unit, and there is a pedestal, one cam rotated and a loose tool arm, the pedestal can be fixed on this by outer power drive On the pedestal of main axle unit, which is hubbed on the pedestal, and one end shaft core position of the cam has one second driving section, should On the end face of the cam other end recess have an annular groove, the pine tool arm one end have force section, the pine tool arm other end with one by The side in power portion, the forced section is formed with a protrusion, and the force application part is around the machining spindle of the main axle unit, the forced section Positioned at the circumferential surface corresponding position of the cam, which is then inserted in the annular groove of the cam;

When the first driving section of the tool changing unit is connect with the second driving section of the unit of forging a knife, by the transmission group by motor Rotary power is transferred on the cam, is made cam rotation predetermined angular and is pushed against on the forced section of the pine tool arm, and by this The force section of loose tool arm acts on the machining spindle, loose knife is carried out with sharp machining spindle, when the cam rotates predetermined angular again Afterwards, then it drives the pine tool arm to return back to original position and be detached from the machining spindle, folder knife is carried out with sharp machining spindle.

2. beating cutter-exchange mechanism according to processing machine described in claim 1, it is characterised in that：It is moved up when the pedestal of the main axle unit is past When dynamic, forge a knife the second driving section of unit of the first driving section and this of the tool changing unit connect and moves together, when the base of the main axle unit Seat is when moving down, and forge a knife the second driving section of unit of the first driving section and this of the tool changing unit is detached from different move.

3. beating cutter-exchange mechanism according to processing machine described in claim 1, it is characterised in that：First driving section of the tool changing unit is Second driving section of convex block, the unit of forging a knife is groove.

4. beating cutter-exchange mechanism according to processing machine described in claim 1, it is characterised in that：First driving section of the tool changing unit is Second driving section of groove, the unit of forging a knife is convex block.