CN218947034U - Automatic tool changing device on right-angle accessory head of planer boring and milling machine - Google Patents

Abstract

The utility model discloses an automatic tool changing device on a right-angle accessory head of a planer boring and milling machine, which comprises a turntable driving mechanism, a turntable and a plurality of claw mechanisms, wherein the turntable driving mechanism is used for driving the turntable to rotate; the rotary table driving mechanism is horizontally arranged in a mounting groove at the upper side of the main shaft of the right-angle accessory head, and comprises a driving motor, a sleeve with an opening at the outer end, a bearing distance sleeve, a pressing plate, a rotating shaft and a locking screw sleeve, wherein the driving motor is fixed at the bottom of the mounting groove, the bottom of the sleeve is fixedly connected with a flange plate on an output shaft of the driving motor, the outer end of the sleeve is supported on a plurality of rolling bearings, the bearing distance sleeve is arranged among the rolling bearings, the inner edge of the pressing plate is propped against the outer ring of the outer rolling bearing, and the rotating shaft is supported in the sleeve; the rotary disc is fixed on the end part of the outer end of the rotary shaft; the jaw mechanisms are fixedly arranged on the edges of the turntable. The utility model saves the time of manual tool changing or automatic tool changing, and can realize the processing of pin holes with different specifications by changing tools with corresponding specifications, thereby greatly improving the processing efficiency and being very convenient to use.

Description

Automatic tool changing device on right-angle accessory head of planer boring and milling machine

Technical Field

The utility model relates to an automatic tool changing device, in particular to an automatic tool changing device used on a right-angle accessory head special for pin hole machining of a planer type boring and milling machine, and belongs to the technical field of metal cutting machining equipment.

Background

The box body parts of the diesel engine, such as the low-speed engine base, the low-speed engine cylinder body, the middle-speed engine frame and other parts, are provided with pin holes with different specifications on each surface, the form and position tolerance requirements of the pin holes are very high, and the six large surfaces and the small surfaces of the box body parts can be machined only after finishing finish machining or finish boring of the holes in the box body. In the actual production process, when the right-angle accessory head is used for processing the pin holes on the planer type boring and milling machine, the cutter is arranged on the main shaft of the right-angle accessory head, and the pin holes with different specifications are subjected to the procedures of chamfering, drilling, reaming and the like, and at least four different cutters such as a chamfering cutter, a twist drill, a reamer and the like are used, so that the pin holes on all surfaces can be processed only by frequently replacing the cutters. However, due to the huge structure of the planer boring and milling machine, the travel in the X direction of the machine tool guide rail exceeds 20 meters, the travel in the Y direction of the machine tool cross beam is about 10 meters, and each time manual tool changing is needed to be carried out up and down or the tool magazine is automatically invoked to change the tool, the tool is required to be returned to the tool changing original point arranged on the machine tool from the machining plane, the time and the labor are wasted, and the machining efficiency is low.

Disclosure of Invention

The utility model aims to provide an automatic tool changing device on a right-angle accessory head of a planer boring and milling machine, which has the advantages of simple structure, time and labor saving in operation and high processing efficiency.

The utility model is realized by the following technical scheme:

an automatic tool changing device on a right-angle accessory head of a planer boring and milling machine, wherein the automatic tool changing device is horizontally arranged on the upper side of a main shaft of the right-angle accessory head and comprises a turntable driving mechanism, a turntable and a plurality of claw mechanisms; the rotary table driving mechanism is horizontally arranged in a mounting groove at the upper side of a main shaft of the right-angle accessory head, the rotary table driving mechanism comprises a driving motor, a sleeve with an opening at the outer end, a bearing distance sleeve, a pressing plate, a rotating shaft and a locking screw sleeve, wherein the driving motor is fixed at the bottom of the mounting groove; the rotary disc is fixed on the end part of the outer end of the rotary shaft; the claw mechanisms are symmetrically and fixedly arranged on the edges of the turntable respectively.

The object of the present utility model can be further achieved by the following technical means.

The automatic tool changing device on the right-angle accessory head of the planer boring and milling machine comprises a motor, a ball screw, a pair of nuts and a pair of claws, wherein the motor is fixed on a turntable, two ends of the ball screw are respectively supported on bearing seats on the turntable, threads at two ends of the ball screw rotate oppositely, one end of the ball screw is fixedly connected with an output shaft of the motor, the pair of nuts are respectively screwed on two ends of the ball screw, and one ends of the pair of claws are respectively fixedly connected with the pair of nuts.

The automatic tool changing device on the right-angle accessory head of the planer boring and milling machine is characterized in that: the device also comprises a plurality of cutter positioning mechanisms, wherein the cutter positioning mechanisms are respectively positioned at the center of the end main shaft of the right-angle accessory head, the top of the end of the right-angle accessory head and two sides of the end of the right-angle accessory head, and the positions of the cutter positioning mechanisms respectively correspond to the positions of the claw mechanisms; the cutter positioning mechanism comprises a positioning table and a plurality of positioning pins, the positioning table is fixed on the end part of the right-angle accessory head or a cushion block at the center of the main shaft of the right-angle accessory head, the middle part of the positioning table is provided with a cutter handle positioning groove extending into the right-angle accessory head or the main shaft of the right-angle accessory head, the plurality of positioning pins are respectively fixed on two sides of the positioning table, cutter handles of the plurality of cutters are respectively supported in the corresponding cutter handle positioning grooves, and two sides of the cutter handle flange are respectively contacted with the corresponding positioning pins.

The pin hole machining tool on the part is configured in a modularized manner, and the pin hole machining tool is simple in structure and low in cost. When the pin holes are machined, the rotating shaft can be moved left and right and rotated through instruction control in a program, the rotating shaft can be moved while rotating, so that the telescopic and rotating of the rotary disc are realized, meanwhile, the claw mechanism on the rotary disc can automatically grab and place the cutter, finally, the automatic quick cutter changing on the right-angle accessory is finished, time and labor are saved in operation, the trouble of manually and frequently changing the cutter back and forth can be effectively avoided, the time of manual cutter changing or automatic cutter changing is saved, meanwhile, the whole set of cutters with corresponding specifications are only required to be replaced, the machining of pin holes with different specifications on different machining surfaces can be realized, the machining efficiency is greatly improved, and the use is very convenient.

Advantages and features of the utility model will be illustrated and explained by the following non-limiting description of preferred embodiments, given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged schematic view of the turntable driving mechanism of the present utility model;

FIG. 3 is an enlarged cross-sectional view of A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of the sleeve of the present utility model;

fig. 5 is a schematic structural view of the turntable and the jaw mechanism of the present utility model.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

As shown in fig. 1 and 2, the automatic tool changer of the present utility model is horizontally disposed on the upper side of the right-angle attachment head spindle 10, and includes a turntable driving mechanism 1, a turntable 2, four jaw mechanisms 3, and four tool positioning mechanisms 4. The turntable driving mechanism 1 is horizontally arranged in a mounting groove 20 on the upper side of the right-angle accessory head spindle 10, the turntable driving mechanism 1 comprises a driving motor 11, a sleeve 12 with an opening at the outer end, a bearing distance sleeve 13, a pressing plate 14, a rotating shaft 15 and a locking screw sleeve 16, the driving motor 11 is fixed at the bottom of the mounting groove 20, the bottom of the sleeve 12 is fixedly connected with a flange plate on an output shaft of the driving motor 11 through a fastener, the outer end of the sleeve 12 is supported on two rolling bearings 17 in the mounting groove 20, the bearing distance sleeve 13 is arranged between the two rolling bearings 17, and the two rolling bearings 17 are respectively positioned through steps of the mounting groove 20, an outer circular shaft shoulder of the sleeve 12 and the bearing distance sleeve 13. The pressing plate 14 is positioned outside the notch of the mounting groove 20 and fixedly connected with the right-angle accessory head, the inner edge of the pressing plate 14 is propped against the outer ring of the outer rolling bearing 17, and the outer end part of the sleeve 12 is pressed by four pressing bolts 18 on the pressing plate 14. As shown in fig. 4, four pairs of communicated spiral sliding grooves 121 are uniformly distributed on the inner wall of the outer end of the sleeve 12 along the circumference, each pair of spiral sliding grooves 121 comprises an uplink groove 122 and a downlink groove 123, and square holes 124 are formed at the intersection of the uplink groove 122 and the downlink groove 123, and four square holes 124 are formed in total. The rotating shaft 15 is supported in the sleeve 12 through two sliding bearings 19, as shown in fig. 3, four sliding pins 151 are uniformly distributed on the outer circle in the middle of the rotating shaft 15, when the sliding pins 151 are installed, the bottoms of the sliding pins 151 can be inserted into corresponding rotating shaft pin holes through corresponding square holes 124, the heads of the four sliding pins 151 are respectively supported in four pairs of spiral sliding grooves 121 in a sliding manner, and a locking screw sleeve 16 is screwed on the outer end of the rotating shaft 15 to axially position the outer sliding bearings 19. The turntable 2 is fixed to the outer end of the rotating shaft 15 by a fastener.

As shown in fig. 5, four jaw mechanisms 3 are symmetrically fixed on four sides of the turntable 2, respectively. The jaw mechanism 3 comprises a motor 31, a ball screw 32, a pair of nuts 33 and a pair of jaws 34, wherein the motor 31 is fixed on the turntable 2, two ends of the ball screw 32 are respectively supported on bearing seats 35 on the turntable 2, threads at two ends of the ball screw 32 are opposite in rotation direction, one end of the ball screw 32 is fixedly connected with an output shaft of the motor 31, the pair of nuts 33 are respectively screwed on two ends of the ball screw 32, and one end of the pair of jaws 34 is respectively fixedly connected with the pair of nuts 33.

As shown in fig. 1, four cutter positioning mechanisms 4 are respectively positioned at the center of the end main shaft 10 of the right-angle attachment head, the top of the end of the right-angle attachment head and two sides of the end of the right-angle attachment head, and the positions of the four cutter positioning mechanisms 4 respectively correspond to the positions of the four jaw mechanisms 3. The cutter positioning mechanism 4 comprises a positioning table 41 and two positioning pins 42, wherein the positioning table 41 is fixed on the end part of the right-angle accessory head or a cushion block at the center of the main shaft 10 of the right-angle accessory head, the middle part of the positioning table 41 is provided with a cutter handle positioning groove 43 extending into the right-angle accessory head or the main shaft 10 of the right-angle accessory head, the two positioning pins 42 are respectively fixed on two sides of the positioning table 41, the cutter handles of the four cutters 5 are respectively supported in the corresponding cutter handle positioning grooves 43, and two sides of the cutter handle flange are respectively contacted with the corresponding positioning pins 42.

The tool changing process of the utility model is as follows:

1) Inputting a command, driving the ball screw 32 to rotate by the motor 31, enabling the pair of nuts 33 to move back, opening the clamping jaws 34, and then respectively placing the required four cutters 5 into the corresponding cutter handle positioning grooves 43;

2) Inputting a command to enable the four pairs of claws 34 to simultaneously test the handles of the corresponding cutters 5, ensuring that the command is executed after accurate grabbing, and enabling the claws 34 to open;

3) And executing a numerical control program, and rotating the main shaft 10 of the right-angle accessory head to normally perform pin hole machining. After the first cutter is machined, four pairs of claws 34 respectively grab the corresponding cutter handles of the four cutters 5 according to a default cutter changing instruction, an execution instruction is executed, a driving motor 11 drives a sleeve 12 to rotate, under the driving of the sleeve 12, four sliding pins 151 on the outer circle of a rotating shaft 15 respectively slide outwards along the ascending grooves 122 of four pairs of spiral sliding grooves 121 on the inner wall of the sleeve 12, the rotating shaft 15 moves outwards, so that a rotating disc 2 is ejected, the four cutters 5 are further taken out of a cutter handle positioning 43, the rotating shaft 15 moves outwards and rotates, when the sliding pins 151 slide to the intersection point of the ascending grooves 122 and the descending grooves 123, the rotating shaft 15 pushes the rotating disc 2 to a dead point, the rotating shaft 15 drives the rotating disc 2 to rotate exactly 45 degrees, at the moment, the sliding pins 151 start to move backwards along the descending grooves 123, the rotating shaft 15 drives the rotating disc 2 to shrink and continue to rotate, when the sliding pins 151 move backwards to a position, the rotating disc 2 is driven by exactly 90 degrees, and at the moment, the cutter handles of the second cutter accurately fall into the corresponding cutter handle positioning grooves 43 of the right-angle attachment head 10, so that the next cutter processing procedure can be finished, and the next machining procedure can be carried out after loosening the sliding pins 151;

4) And so on, completing the processing instructions of the four cutters 5. If another pin hole with the same specification needs to be machined, a cutter is not required to be replaced, and a subsequent program is directly executed. If another pin hole with different specifications needs to be processed, repeating the steps for processing. If the pin hole processing is not carried out, the processing of other parts is finished, the clamping jaw is only required to be loosened, the corresponding cutter is arranged, and the right-angle accessory head is not required to be replaced or the utility model is not required to be dismounted.

In addition to the above embodiments, other embodiments of the present utility model are possible, and all technical solutions formed by equivalent substitution or equivalent transformation are within the scope of the present utility model.

Claims (3)

1. An automatic tool changing device on a right-angle accessory head of a planer boring and milling machine is characterized in that: the automatic tool changing device is horizontally arranged on the upper side of the main shaft of the right-angle accessory head and comprises a turntable driving mechanism, a turntable and a plurality of claw mechanisms; the rotary table driving mechanism is horizontally arranged in a mounting groove at the upper side of a main shaft of the right-angle accessory head, the rotary table driving mechanism comprises a driving motor, a sleeve with an opening at the outer end, a bearing distance sleeve, a pressing plate, a rotating shaft and a locking screw sleeve, wherein the driving motor is fixed at the bottom of the mounting groove; the rotary disc is fixed on the end part of the outer end of the rotary shaft; the claw mechanisms are symmetrically and fixedly arranged on the edges of the turntable respectively.

2. The automatic tool changing device on the right angle accessory head of the planer boring and milling machine as claimed in claim 1, wherein: the claw mechanism comprises a motor, a ball screw, a pair of nuts and a pair of claws, wherein the motor is fixed on the turntable, two ends of the ball screw are respectively supported on bearing seats on the turntable, threads at two ends of the ball screw rotate oppositely, one end of the ball screw is fixedly connected with an output shaft of the motor, the pair of nuts are respectively screwed on two ends of the ball screw, and one ends of the pair of claws are respectively fixedly connected with the pair of nuts.

3. An automatic tool changing device on right angle accessory head of planer boring and milling machine as claimed in claim 2, wherein: the device also comprises a plurality of cutter positioning mechanisms, wherein the cutter positioning mechanisms are respectively positioned at the center of the end main shaft of the right-angle accessory head, the top of the end of the right-angle accessory head and two sides of the end of the right-angle accessory head, and the positions of the cutter positioning mechanisms respectively correspond to the positions of the claw mechanisms; the cutter positioning mechanism comprises a positioning table and a plurality of positioning pins, the positioning table is fixed on the end part of the right-angle accessory head or a cushion block at the center of the main shaft of the right-angle accessory head, the middle part of the positioning table is provided with a cutter handle positioning groove extending into the right-angle accessory head or the main shaft of the right-angle accessory head, the plurality of positioning pins are respectively fixed on two sides of the positioning table, cutter handles of the plurality of cutters are respectively supported in the corresponding cutter handle positioning grooves, and two sides of the cutter handle flange are respectively contacted with the corresponding positioning pins.

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