CN2612506Y

CN2612506Y - Damping and positioning structure for the automatic toochange mechanism of central cutting machine

Info

Publication number: CN2612506Y
Application number: CN 03256465
Authority: CN
Inventors: 赖金昌; 黄耀德
Original assignee: DETA MACHINERY Co Ltd
Current assignee: DETA MACHINERY Co Ltd
Priority date: 2003-04-24
Filing date: 2003-04-24
Publication date: 2004-04-21
Anticipated expiration: 2013-04-24

Abstract

The utility model relates to a damping and positioning structure for the automatic tool change mechanism of a central cutting machine. Primarily, two parallel and communicated liquid pressure chambers are arranged in a block body fixedly arranged under an oil pressure motor machine frame, the front of each liquid pressure chamber is convexly extended with a piston, the back side of each liquid pressure chamber is screwed with an adjusting bolt, and a corresponding piston position on a tool change arm is provided with a locating piece. Thus, the utility model makes use of the oil pressure motor with low cost to drive the tool change arm to carry out rotation tool change action, and a locating piece supports and presses the corresponding piston to move inward gradually. When the cushioning tool change arm reaches the location, the impact force is rotated quickly further to adjust the bolt to support and bunt the piston to locate, causing the tool change arm to have accurate location. The utility model not only reaches entirety manufacture cost reduction, but also reaches practicality benefit of vibration and noise reduction, and the vibration and noise are generated when the tool is changed by rotation.

Description

The buffer positioning structure of central cutting machine automatic tool changer

Technical field

The utility model provides and a kind ofly drives tool change arm with hydraulic motor and do outside the tool changing action, and its fast rotational bump strength when locating of available buffer more is with the buffer positioning structure of the central cutting machine automatic tool changer that reduces tool changing vibration and noise.

Background technology

Nowadays, the central cutting machine is when changing the cutter of main shaft, be according to default program with automatic tool changer, in tool magazine, change and choose suitable cutting tool, in the exchanging knives process of cutter-exchange mechanism, the sequential of its tool change arm motion is: initial point → button cutter resets to clamp the cutter → displacement that descends again on main shaft and the tool magazine 180 rotation tool changing → displacement slotting tool that the rises again → reverse rotations then of spending of drawing sword → do, therefore, substantially include lifting action and spinning movement in the action of tool change arm, wherein, spinning movement is driven by motor at present mostly, and cooperate a location structure, make tool change arm when the rotation tool changing, locate really, make two cutters lay respectively at main shaft and tool magazine below, in order to drawing sword and the slotting tool action, see also Fig. 1 and 2, rise and be the partial structurtes schematic diagram of cutter-exchange mechanism, it is provided with hydraulic motor 2 above a pedestal 1, this hydraulic motor 2 is connected a tool change arm 4 with rotating shaft 3, and the horizontal parallel reference column 5 that is provided with the suitable distance of two tools on the

tool change arm

4,6, corresponding tool change arm 4 one limited posts 6 position parallel longitudinals are provided with two bumping posts 7 in pedestal 1 bottom surface in addition, 8, by this, see also Fig. 1 and 3 figure, in reset condition, one reference column 6 of tool change arm 4 is an overhead bumping post 7 sides in pedestal 1, after tool change arm 4 is drawn sword action, promptly drive tool change arm 4 and do 180 degree rotation tool changing with hydraulic motor 2, and make another reference column 5 be resisted against another bumping post 8 of pedestal 1 and locate, make two cutters lay respectively at main shaft and tool magazine below, for carrying out the slotting tool action, after slotting tool finished, hydraulic motor 2 drove tool change arm 4 counter-rotating again and resets, and made reference column 6 overheads locate in the bumping post 7 of pedestal 1; Only, because the rotary speed of hydraulic motor 2 is single speed, itself there is no variable speed design, when hydraulic motor 2 drives tool change arm 4 fast rotational to tool change position, its

reference column

5,6 also clash into bumping post 7 relatively fast, 8 and contact location, not only cause

reference column

5,6 and bumping

post

7,8 assemblies such as grade are impaired, easilier, quick bump vibrates and noise because of producing, though so can on hydraulic motor 2, install magnetic valve additional to have speed changing function, but the rotation tool changing responsiveness of tool change arm 4 is very fast, and only 1～2 second, it is too late that magnetic valve reacts at all, cause

reference column

5,6 still clash into bumping post 7 fast, 8 and produce vibration and noise, so installing magnetic valve reality is not had a benefit.

This novel content

Therefore, main purpose of the present utility model is promptly improved at the shortcoming of above-mentioned prior art, and a kind of buffer positioning structure of central cutting machine automatic tool changer is provided.

The purpose of this utility model realizes by following technical proposals, the buffer positioning structure of central cutting machine automatic tool changer of the present utility model mainly is to be that one is fixedly arranged on and laterally offers the two parallel and hydraulic pressure chambers that communicate in the block of hydraulic motor frame below, the place ahead of each hydraulic pressure chamber has protruded out a piston, an adjustment bolt is established at rear then spiral shell, a corresponding piston position is provided with keeper on tool change arm in addition, and then tool change arm is when reset condition, system to be moving in keeper roof pressure one piston, and makes the hydraulic oil pushing tow that another piston communicated and outwards protrude out and treat the position; By this, after tool change arm finishes in drawing sword, promptly drive and be rotated the tool changing action with hydraulic motor, and make keeper with rotation and the corresponding piston of roof pressure move in gradually, and then the fast rotational bump strength of buffering tool change arm when locating, and it is spacing to adjust bolt contact piston, tool change arm is located really, otherwise, after slotting tool finishes, hydraulic motor then drives the tool change arm counter-rotating and resets, and make the corresponding piston of keeper roof pressure, the fast rotational bump strength when also available buffer resets, therefore, the utility model not only drives tool change arm with hydraulic motor cheaply, has more the vibration that produced when reducing the rotation tool changing and the Practical Benefit of noise.

Another purpose of the present utility model is to be that spiral shell establishes one in the lateral duct that two hydraulic pressure chambers communicate to regulate bolt, and then can regulate the flow velocity of hydraulic oil, reaches and adjusts the buffer speed utilization benefit of moving in the tool change arm keeper roof pressure piston.

Another purpose of the present utility model is to be that the user can adjust the amount of protruding out of the adjustment bolt at hydraulic pressure chamber rear, use adjust piston in the amount of moving, reach the utilization benefit of control tool change arm positioning accuracy.

Do further to understand for structure, effect, lift a preferred embodiment and conjunction with figs. now and be described in detail detailed description the application.

Description of drawings

Fig. 1 is the partial structurtes front view of the cutter-exchange mechanism of prior art;

Fig. 2 is the partial structurtes vertical view of the cutter-exchange mechanism of prior art;

Fig. 3 is the use schematic diagram of the tool change arm of prior art;

Fig. 4 is the front view of the utility model cutter-exchange mechanism;

Fig. 5 is the partial top view of the utility model cutter-exchange mechanism;

Fig. 6 is the side view of the utility model cutter-exchange mechanism;

Fig. 7 is the allocation plan of the utility model cutter-exchange mechanism and main shaft, tool magazine;

Fig. 8 is the schematic diagram of the utility model tool change arm button cutter;

Fig. 9 is the schematic diagram of drawing sword of the utility model cutter-exchange mechanism;

Figure 10 is the rotation tool changing schematic diagram of the utility model cutter-exchange mechanism;

Figure 11 is the slotting tool schematic diagram of the utility model cutter-exchange mechanism;

Figure 12 is the schematic diagram that resets of the utility model cutter-exchange mechanism;

Figure 13 is the schematic diagram that the utility model is adjusted buffer speed and positioning accuracy;

Figure 14 is the use schematic diagram () of another structure of the utility model;

Figure 15 is the use schematic diagram (two) of another structure of the utility model.

The piece number explanation:

Prior art

Pedestal: 1 hydraulic motor: 2 rotating shafts: 3

Tool change arm: 4 reference columns: 5,6 bumping posts: 7,8

The utility model

Frame: 10 oil hydraulic cylinders: 11 piston rods: 12

Movable machine frame: 13 hydraulic motors: 14 guide rods: 15

Gear train: 16 tool change arms: 17 blocks: 18

Hydraulic pressure chamber: 19A, 19B lateral duct: 19C, 19D

Piston: 20A, 20B adjust bolt: 21A, 21B

Regulate bolt: 22 keepers: 23 main tappings: 30

Main shaft: 31 tool magazines: 40 cutters: 50,60

The specific embodiment

See also Fig. 4～6 figure, be equiped with an oil hydraulic cylinder 11 on the frame 10 of the present utility model, the piston rod 12 of this oil hydraulic cylinder 11 links another movable machine frame 13 downwards, be equiped with hydraulic motor 14 and two guide rods 15 on this movable machine frame 13, and make it run through convexedly stretching in outside the frame 10, the rotating shaft of hydraulic motor 14 links a gear train 16 again, this gear train 16 is connected a tool change arm 17 with rotating shaft, wherein, the below of this movable machine frame 13 is equiped with a block 18, these block 18 inner transverse are parallel to be provided with two and to communicate and be equiped with the hydraulic pressure chamber 19A of hydraulic oil, 19B, each hydraulic pressure chamber 19A, the place ahead of 19B is provided with a

piston

20A, 20B, rear then spiral shell is provided with a locating part, this locating part can be one and adjusts

bolt

21A, 21B, and in connecting two hydraulic pressure chamber 19A, spiral shell is established one and is regulated bolt 22 among the lateral duct 19C of 19B, in addition corresponding piston 20A position locking positioning piece 23 on tool change arm 17; See also Fig. 6,7 and 8, this cutter-exchange mechanism is to be installed in 40 of main tapping 30 and tool magazines, and two jaws of tool change arm 17 and lay respectively at main shaft 31 belows of main tapping 30 and the below of tool magazine 40, to carry out the automatic tool changer operation, at first, tool change arm 17 is to detain the cutter action, with the

cutter

50,60 that fastens main shaft 31 and tool magazine 40 respectively, keeper 23 is the corresponding piston 20A of roof pressure then, make and move in the piston 20A and compress hydraulic oil among this hydraulic pressure chamber 19A, make hydraulic oil flow to the hydraulic pressure chamber 19B of opposite side, outwards protrude out suitable length to promote another piston 20B; See also Fig. 9 figure, behind tool change arm 17 button cuttves, can drive oil hydraulic cylinder 11 and protrude out piston rod 12,, make tool change arm 17 action of drawing sword to drive movable machine frame 13 and the hydraulic motor 14 that is installed in, guide rod 15, and decline displacement such as tool change arm 17; See also Fig. 4 and 10, after tool change arm 17 is drawn sword, promptly drive 16 rotations of hydraulic motor 14 driven gear groups, 16 of this gear trains drive tool change arm 17 rotations the carrying out tool changing action that links, and the keeper 23 of tool change arm 17 also with rotation, and approach to 180 when spending in rotation, be that the piston 20B that protrudes out of overhead opposite side moves in gradually, and then the fast rotational bump strength of buffering tool change arm 17, and the vibration and the noise that produce when reducing bump fast, adjusted bolt 21B overhead when spacing when piston 20B gives up the throne, tool change arm 17 promptly rotates to 180 degree location, and then conversion two

cutters

50,60 position, this piston 20B is when interior moving again, and the hydraulic oil among the compression hydraulic pressure chamber 19B, make hydraulic oil flow to the hydraulic pressure chamber 19A of opposite side, outwards protrude out with the piston 20A in this hydraulic pressure chamber of pushing tow 19A and reset; See also Figure 11, after tool change arm 17 rotation tool changing, oil hydraulic cylinder 11 is to contract in the piston rod 12, to drive movable machine frame 13, hydraulic motor 14, guide rod 15, and oppositely rising displacement such as tool change arm 17, makes tool change arm 17 carry out the slotting tool action; Therefore, see also Figure 12, behind tool change arm 17 slotting tools, hydraulic motor 14 promptly drives tool change arm 17 reverse rotations and resets, and make keeper 23 approach to 180 when spending in rotation, move in the corresponding piston 20A of overhead, fast rotational bump strength when also available buffer tool change arm 17 resets, and vibration and noise when reducing tool changing, and piston 20A and to be adjusted bolt 21A overhead spacing makes tool change arm 17 rotate to 180 degree location and homing, at this moment, hydraulic oil among this hydraulic pressure chamber 19A then flows to the hydraulic pressure chamber 19B of opposite side, outwards protrudes out with the piston 20B in this hydraulic pressure chamber of pushing tow 19B to reset; In addition, see also Figure 13, the user can utilize the adjusting bolt 22 among the lateral duct 19C that is arranged at two

hydraulic pressure chamber

19A, 19B, regulate the flow velocity of hydraulic oil, and then adjust the buffer speed that moves in tool change arm 17 keepers 23 roof pressure piston 20A, the 20B, in addition, also can adjust adjustment bolt 21A, the 21B amount of protruding out at

hydraulic pressure chamber

19A, 19B rear, with the amount of moving in adjustment piston 20A, the 20B, reach the utilization benefit of control tool change arm 17 positioning accuracies.Moreover, see also Figure 14 and 15, can offer several in the block 18 of the present utility model and connect two

hydraulic pressure chamber

19A, 19B and have the lateral duct 19C that regulates bolt 22,19D, when tool change arm 17 rotation tool changing are not extremely located as yet, and its keeper 23 is when having moved in the roof pressure piston 20B, part hydraulic oil in the hydraulic pressure chamber 19B at this piston 20B place can flow to another hydraulic pressure chamber 19A by the lateral duct 19D that is positioned at the place ahead earlier, with buffering tool change arm 17 fast rotational bump strength partly, when keeper 23 continues roof pressure piston 20B, piston 20B moves and lateral duct 19D is sealed promptly, the hydraulic oil that makes other flows to hydraulic pressure chamber 19A by the lateral duct 19C at rear, continue the fast rotational bump strength of buffering tool change arm 17 again, and then can make piston 20B segment displacement, reach the fast rotational bump strength of segmentation buffering tool change arm 17, and can reduce the Practical Benefit of tool changing vibration more.

Claims

1, a kind of buffer positioning structure of central cutting machine automatic tool changer, it is characterized in that motor is to drive tool change arm to do 180 degree rotation tool changing actions, wherein laterally develop two hydraulic pressure chambers that communicate in the block below motor framework, protrude out a piston in each hydraulic pressure chamber, a corresponding piston position is provided with positioning piece on tool change arm in addition.

2, the buffer positioning structure of central cutting machine automatic tool changer according to claim 1 is characterized in that the rear of the corresponding piston of each hydraulic pressure chamber is provided with a locating part.

3, the buffer positioning structure of central cutting machine automatic tool changer according to claim 2 is characterized in that this locating part can be one and adjusts the bolt spiral shell and establish and convexedly stretch in the hydraulic pressure chamber.

4, the buffer positioning structure of central cutting machine automatic tool changer according to claim 1 is characterized in that this motor is a hydraulic motor.

5, the buffer positioning structure of central cutting machine automatic tool changer according to claim 1 it is characterized in that the hydraulic pressure chamber system of this block be arranged in parallel, and spiral shell is established an adjusting bolt in the lateral duct that communicates.

6, the buffer positioning structure of central cutting machine automatic tool changer according to claim 5 is characterized in that in this block being the lateral duct that is provided with several.