CN113305618A

CN113305618A - Automatic head changing warehouse of gantry machining center

Info

Publication number: CN113305618A
Application number: CN202110576668.0A
Authority: CN
Inventors: 岳国柱; 孟祥东; 沈志成; 施睿; 张群彬
Original assignee: Jiangsu Prudy Cnc Technology Co ltd
Current assignee: Jiangsu Prudy Cnc Technology Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-08-27

Abstract

The invention relates to an automatic head changing head warehouse of a gantry machining center, which comprises a head warehouse lathe bed, a sliding seat mechanism, a fixed support and a rotating mechanism, wherein the sliding seat mechanism is arranged on the head warehouse lathe bed and can move in the length direction of the head warehouse lathe bed; the fixed support comprises a plurality of fixed supports which are arranged on one side of the head library bed body in parallel, and the head library support is placed on the fixed support; the rotating mechanism comprises a rotating base arranged at the tail end of the headstock bed body and a rotary table rotatably arranged on the rotating base; the rotary table can be connected with the head library machine body in parallel or rotate relative to the head library machine body, the sliding seat mechanism can move back and forth on the head library machine body and the rotary table, and the head library support can move back and forth on the sliding seat mechanism and the fixed support. The full-automatic accessory head replacement can be realized, manual operation is not needed, head replacement precision is guaranteed, and head replacement efficiency is improved; besides, the whole head library is independent of the machine tool, so that the number of the fixed supports can be flexibly increased according to actual conditions, and the application range of the head library is expanded.

Description

Automatic head changing warehouse of gantry machining center

Technical Field

The invention belongs to the technical field of gantry machining center head changing libraries, and particularly relates to an automatic head changing library of a gantry machining center.

Background

The large gantry machining center is an urgent need device in the modern equipment manufacturing industry, and with the continuous growth of economy in China, the country increasingly attaches importance to the development of the related industries of heavy gantry machining center projects. At present, the gantry pentahedron machining center is widely applied to the mechanical manufacturing industry. The automatic head changing warehouse mechanism is a key part of a gantry pentahedron machining center, whether the structure is reasonable or not directly influences the machining range, the machining efficiency and the machining precision of parts of the whole machine tool, and the machining precision is a main factor influencing the application range of the machine tool.

The existing automatic head changing head library needs to be fixed on a machine tool, and due to the limitation of the space of the machine tool, only the automatic head changing action can be realized, the number of the head libraries is fixed, and the head libraries cannot be added according to the actual production requirement. And because a plurality of head changing actions of multistation need rely on manual operation, not only the positioning accuracy of changing the head is low, wastes time and energy moreover, has directly influenced the efficiency of changing the head.

Disclosure of Invention

The invention aims to provide an automatic head changing warehouse of a gantry machining center, which aims to solve the problem of low head changing efficiency of the gantry machining center.

The automatic head changing library of the gantry machining center is realized by the following steps:

an automatic head changing warehouse of a gantry machining center comprises

A machine body of the head stock,

the sliding seat mechanism is arranged on the head garage lathe bed and can move in the length direction of the head garage lathe bed;

the fixed support comprises a plurality of fixed supports which are arranged on one side of the head library bed body in parallel, and the head library support is placed on the fixed supports;

the rotary mechanism comprises a rotary base arranged at the tail end of the headstock bed body and a rotary table rotatably arranged on the rotary base;

the rotary table can be connected with the head library machine body in parallel or rotate relative to the head library machine body, the sliding seat mechanism can move back and forth on the head library machine body and the rotary table, and the head library support can move back and forth on the sliding seat mechanism and the fixed support.

Furthermore, the sliding seat mechanism comprises a sliding seat body and two parallel laths arranged in the sliding seat body, the laths are perpendicular to the length direction of the headstock bed body, sliding bar holes identical to the length direction of the laths are formed in the laths, and push-pull shafts capable of moving linearly are arranged in the sliding bar holes;

the bottom of the head garage support is provided with a push-pull barrier strip, and the push-pull shaft is matched with the push-pull barrier strip to drive the head garage support to move on the sliding seat body and the fixed support.

Furthermore, two groups of lifting supports which are arranged in an opposite mode are mounted at the bottom of the batten and comprise a fixed frame and an inclined plate hinged to the inner side of the fixed frame, a spring is connected between the inclined plate and the fixed frame, a gap is reserved between the fixed frame and the batten, and the top of the inclined plate is movably clamped at the bottom of the batten;

when the push-pull shaft moves from the side where the inclined plate is located to the side where the fixing frame is located, the push-pull shaft penetrates through the two lifting frames in the same group, moves downwards, and the lower end cap of the push-pull shaft bypasses the bottom of the lifting support;

when the push-pull shaft moves from the side of the fixed frame to the side of the inclined plate, the lower end cap of the push-pull shaft penetrates through the space between the lath and the lifting support.

Furthermore, the front end and the rear end of the inner cavity of the sliding seat body are rotatably provided with two swing arms which are centrosymmetric, one end of each swing arm is hinged with a push-pull connecting plate, the other end of each swing arm is hinged with a push-pull oil cylinder, and the push-pull connecting plates are hinged with push-pull shafts corresponding to the push-pull connecting plates.

Furthermore, the two sides of each slat are respectively provided with a guide rail I parallel to the slats, a guide rail II corresponding to the guide rail I is installed on the fixed support, and a sliding block I matched with the guide rail I and the guide rail II is installed at the bottom of the head warehouse support.

Furthermore, a screw rod located in the length direction of the headstock body is installed on the headstock body, a motor is connected to the front end of the screw rod, and the sliding seat mechanism can be hung on or separated from a screw rod seat of the screw rod.

Further, slide mechanism is still including installing the hydro-cylinder that articulates in its bottom, the piston rod that articulates the hydro-cylinder sets up forward, and the tip of its piston rod articulates there is the connecting plate, the connecting plate links to each other with the one end of axle I, the other end of axle I is connected with hangs and connects the pole, it is in to hang to connect the pole can hang under the drive that articulates the hydro-cylinder and connect on the lead screw seat or with the separation of lead screw seat.

Further, guide rails III parallel to the guide rails are installed on two sides of the screw rod, a guide rail IV matched with the guide rails III is installed on the rotary table, and the sliding seat mechanism further comprises a sliding block II which is installed at the bottom of the sliding seat mechanism and matched with the guide rails III and the guide rail IV.

Furthermore, install on the rotating base and be located the axle II of revolving stage one side, the place side of axle II is provided with articulates the rotatory hydro-cylinder in the rotating base, the side of revolving stage be provided with II normal running fit's of axle rotatory even board, the piston rod of rotatory hydro-cylinder with rotatory even board is articulated.

Furthermore, the rotary oil cylinder and the fixed support are positioned on the same side of the head stock bed, and the rotary table can rotate 90 degrees towards the direction of the rotary oil cylinder on the rotary table.

After the technical scheme is adopted, the invention has the beneficial effects that:

(1) according to the invention, through the matching of the head warehouse bed body, the rotary table, the sliding seat mechanism and the fixed support, the full-automatic replacement of the accessory head can be realized, manual operation is not required, the head replacement precision is ensured, and the head replacement efficiency is improved;

(2) the whole head library is independent of the machine tool, so that the number of the fixed supports can be flexibly increased according to actual conditions, and the application range of the head library is expanded; and through the cooperation of revolving stage and first storehouse lathe bed, make slide mechanism turn to the transport, improve the degree of automation of trade head operation.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a block diagram of a gantry machining center automatic head changing library (prior to head changing operations) in accordance with a preferred embodiment of the present invention;

FIG. 2 is a block diagram of a gantry machining center automatic head changing library (after a head change operation) in accordance with a preferred embodiment of the present invention;

FIG. 3 is a block diagram of a carriage mechanism of the gantry machining center automatic head changing garage according to the preferred embodiment of the present invention;

FIG. 4 is a block diagram of a carriage mechanism of the gantry machining center automatic head changing garage according to the preferred embodiment of the present invention;

FIG. 5 is a top view of the carriage mechanism of the gantry machining center automatic head changing head magazine according to the preferred embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a structural diagram of a lifting support part of the automatic head changing warehouse of the gantry machining center in the preferred embodiment of the invention;

FIG. 8 is a mechanical diagram of a rotating mechanism of the gantry machining center automatic head changing head magazine according to the preferred embodiment of the present invention;

FIG. 9 is a block diagram of a head magazine support of the gantry machining center automatic head magazine according to the preferred embodiment of the present invention;

in the figure: the head library lathe bed 1, a screw rod 11, a motor 12, a screw rod seat 13, a guide rail III 14, a slide block III 15,

the device comprises a sliding seat mechanism 2, a sliding seat body 21, a ribbon board 22, a sliding strip hole 23, a push-pull shaft 24, a fixed frame 25, an inclined plate 26, a spring 27, a return spring 28, a fixed plate 29, a swing arm 210, a push-pull connecting plate 211, a push-pull oil cylinder 212, a mounting plate 213, a guide rail I214, a stop II 215, a hanging oil cylinder 216, a connecting plate 217, a shaft I218, a hanging rod 219, a sliding block II 220, a fixed support 3, a guide rail II 31, a stop I32, a rotating mechanism 4, a rotating base 41, a rotary table 42, a guide rail IV 43, a shaft II 44, a rotating oil cylinder 45, a rotating connecting plate 46, a head warehouse support 5, a push-pull stop strip 51, a head warehouse support plate 52, a support rod 53, a buffer spring 54, a positioning pin 55, a proximity switch 56, a sliding block I57 and an accessory head 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1-9, an automatic head changing head magazine of a gantry machining center comprises a head magazine bed 1, a slide seat mechanism 2, a fixed support 3 and a rotating mechanism 4, wherein the slide seat mechanism 2 is installed on the head magazine bed 1 and can move in the length direction of the head magazine bed 1; the fixed support 3 comprises a plurality of head library beds 1 which are arranged in parallel, and a head library support 5 is placed on the fixed support 3; the rotating mechanism 4 comprises a rotating base 41 arranged at the tail end of the head garage bed body 1 and a rotary table 42 rotatably arranged on the rotating base 41; the turntable 42 can be connected to the headstock bed 1 in parallel or can rotate relative to the headstock bed 1, the carriage mechanism 2 can move back and forth on the headstock bed 1 and the turntable 42, and the headstock bracket 5 can move back and forth on the carriage mechanism 2 and the fixed bracket 3.

The head library support 5 used for placing the accessory head 6 is placed on the fixed support 3, when the head needs to be changed, the head library support 5 where the accessory head 6 needing to be changed is placed on the sliding seat mechanism 2 after being pulled out of the fixed support 3, the sliding seat mechanism 2 is driven by the sliding seat mechanism 2 to move to the gantry machining center through the head library machine body 1 and the rotary table 42 to carry out head changing operation, meanwhile, the sliding seat mechanism 2 can additionally place an empty head library support 5 used for placing the accessory head 6 taken down from the gantry machining center, after the head changing is completed, the sliding seat mechanism 2 returns, the head library support 5 provided with the accessory head 6 to be changed is moved into the fixed support 3 again, and the whole head changing operation is completed.

In order to drive the headstock bracket 5 to be pulled out and pushed in relative to the fixed bracket 3, the slide carriage mechanism 2 comprises a slide carriage body 21 and two parallel laths 22 arranged in the slide carriage body 21, wherein the laths 22 are perpendicular to the length direction of the headstock bed body 1, the laths 22 are provided with sliding bar holes 23 with the same length direction, and a push-pull shaft 24 capable of linearly moving in the sliding bar holes 23.

The bottom of the head garage support 5 is provided with a push-pull barrier strip 51, and the push-pull shaft 24 and the push-pull barrier strip 51 are matched to drive the head garage support 5 to move on the sliding seat body 21 and the fixed support 3.

When the head garage support 5 is pulled out or pushed in, the slide base body 21 is opposite to the fixed support 3 where the selected accessory head 6 is located, the push-pull barrier strip 51 is located at the side of the bottom of the head garage support 5 facing the slide base mechanism 2, the push-pull shaft 24 moves linearly in the slide strip hole 23, i.e. towards or away from the fixed bracket 3, when the push-pull shaft 24 is located on the side of the push-pull bar 51 facing away from the slide mechanism 2, the push-pull barrier strip 51 and the head garage bracket 5 are pushed to move from the fixed bracket 3 to the slide base body 21 by the movement of the push-pull shaft 24 towards the slide base body 21, when the push-pull shaft 24 is located at the side of the push-pull bar facing the slide carriage mechanism 2, the push-pull bar 51 and the head garage support 5 are pushed to move from the slide carriage body 21 to the fixed support 3 by the movement of the push-pull shaft 24 towards the fixed support 3, so that the accessory head 6 is taken out and put back.

Specifically, the bottom of the head garage support 5 is provided with a head garage support supporting plate 52, and the push-pull barrier strip 51 is arranged at the bottom of the head garage support supporting plate 52.

The four corners above the head library bracket 5 are provided with support rods 53, the support rods 53 are sleeved with buffer springs 54, wherein the inner sides of the two diagonal support rods 53 are provided with positioning pins 55, and one corner above the head library bracket 5 is provided with a proximity switch 56 for detecting whether the accessory head 6 is placed in place.

In order to realize the matching of the push-pull shaft 24 and the push-pull barrier strip 51, two sets of lifting brackets arranged in an opposite manner are mounted at the bottom of the slat 22, each lifting bracket comprises a fixed bracket 25 and an inclined plate 26 hinged on the inner side of the fixed bracket 25, a spring 27 is connected between the inclined plate 26 and the fixed bracket 25, a gap is reserved between the fixed bracket 25 and the slat 22, and the top of the inclined plate 26 is movably clamped at the bottom of the slat 22.

When the push-pull shaft 24 moves from the side of the inclined plate 26 to the side of the fixed frame 25, the push-pull shaft 24 passes through between two lifting brackets in the same group, and the push-pull shaft 24 moves downwards, and the lower end cap of the push-pull shaft bypasses the bottoms of the lifting brackets;

when the push-pull shaft 24 moves from the side of the fixed frame 25 to the side of the inclined plate 26, the lower end cap of the push-pull shaft 24 passes between the slat 22 and the lifting bracket.

The top of the push-pull shaft 24 is provided with an upper end cap, the bottom of the push-pull shaft is provided with a lower end cap, and a gap is reserved between the two lifting supports in the same group, wherein the outer diameter of the upper end cap and the outer diameter of the lower end cap are both larger than the width of the sliding bar hole 23, so that the push-pull shaft 24 can be prevented from falling off from the sliding bar hole 23.

The outer diameter of the push-pull shaft 24 is smaller than the width of the sliding bar hole 23 and the width of the interval between the two lifting brackets in the same group, so that smooth movement of the push-pull shaft 24 between the sliding bar hole 23 and the two lifting brackets can be ensured.

The outer diameter of the lower end cap is larger than the spacing width between two lifting brackets in the same group, so that when the push-pull shaft 24 moves from the side of the inclined plate 26 to the side of the fixed frame 25, the push-pull shaft 24 can move downwards along with the lifting brackets while moving linearly, so as to pass over the push-pull barrier strip 51, and the push-pull shaft 24 and the push-pull barrier strip 51 are convenient to match.

Preferably, the push-pull shaft 24 above the slat 22 is sleeved with a return spring 28, the inner diameter of the return spring 28 is smaller than the outer diameter of the upper end cap, when the push-pull shaft 24 moves from the side of the inclined plate 26 to the side of the fixed frame 25, the push-pull shaft 24 moves downwards to compress the return spring 28, and after passing through the lifting bracket, the push-pull shaft 24 can move upwards to return under the action of the return spring 28.

Specifically, in order to ensure smooth movement of the push-pull shaft 24 at the lifting bracket, the upper end of the inclined plate 26 is inclined inward, the fixing frame 25 is a V-shaped structure with an opening facing the inclined plate 26, the upper plate of the fixing frame 25 is horizontally arranged and spaced from the slat 22, and the lower plate of the fixing frame 25 is inclined and opposite to the inclined plate 26. The bottom of the slat 22 is provided with a slot matched with the inclined plate 26, and the top of the inclined plate 26 is matched in the slot, so that the separation of the inclined plate 26 and the slat 22 caused by the compression spring 27 when the push-pull shaft 24 moves from the side of the inclined plate 26 to the side of the fixing frame 25 can be prevented, and the push-pull shaft 24 can be ensured to be attached to the inclined plate 26 and move downwards. The inner side surface of the slot is an inclined surface, so that when the push-pull shaft 24 moves from the side of the fixed frame 25 to the side of the inclined plate 26, the inclined plate 26 is conveniently separated from the slat 22, and the push-pull shaft 24 passes through the space between the inclined plate 26 and the slat 22.

Taking the garage head 5 from the fixed bracket 3 to the slide carriage body 21 as an example, in the initial state, the push-pull shaft 24 is located between two lifting brackets on the slat 22 where the push-pull shaft 24 is located, the push-pull shaft 24 moves towards one end of the slat 22 close to the fixed bracket 3, when the push-pull shaft 24 moves to the lifting brackets, the push-pull barrier strip 51 blocks the movement of the push-pull barrier strip 51 towards the slide carriage body 21, and if the push-pull shaft 24 continues to move linearly horizontally. At this time, under the action of the sloping plate 26, the lower end cap of the push-pull shaft 24 moves along with the outer wall of the sloping plate 26, when the lower end cap moves to the bottommost part of the lifting bracket, the upper end cap of the push-pull shaft 24 is located below the push-pull barrier strip 51, under the action of the return spring 28 of the push-pull shaft 24, the lower end cap will move up along with the lower plate of the fixed frame 25, when the push-pull shaft 24 is separated from the lifting bracket, the push-pull shaft 24 moves to the side of the push-pull barrier strip 51 away from the sliding base body 21, then the push-pull shaft 24 changes the moving direction, i.e. moves towards the other end of the slat 22, and the push-pull shaft 24 can drive the headstock bracket 5 to move synchronously through the cooperation with the push-pull barrier strip 51, so as to move the headstock bracket 5 from the fixed bracket 3 to the sliding base body 21. In the moving process, the lower end cap passes through the space between the upper plate of the fixing frame 25 and the ribbon board 22, when passing through the inclined plate 26, the inclined plate 26 is pushed to be pressed downwards, so that the lower end cap is separated from the bottom of the ribbon board 22, the lower end cap can pass through the space between the inclined plate 26 and the ribbon board 22 by the extension spring 27 and continuously moves horizontally and linearly, and after passing through the inclined plate 26, the inclined plate 26 is reset under the action of the spring 27 and is restored to the clamping state with the bottom of the ribbon board 22.

Preferably, in order to fix the lifting brackets, fixing plates 29 are respectively installed on two sides of each group of lifting brackets, and the fixing frames 25 are correspondingly fixed on the inner walls of the corresponding fixing plates 29.

In order to drive the push-pull shaft 24 to move linearly, two centrally symmetrical swing arms 210 are rotatably mounted at the front end and the rear end of the inner cavity of the sliding seat body 21, one end of each swing arm 210 is hinged with a push-pull connecting plate 211, the other end of each swing arm is hinged with a push-pull oil cylinder 212, and the push-pull connecting plate 211 is hinged with the corresponding push-pull shaft 24.

The swing arm 210 is driven to rotate by the extension and contraction of the piston rod of the push-pull oil cylinder 212, so that the push-pull shaft 24 is driven to linearly move by the push-pull connecting plate 211.

Specifically, the two swing arms 210 are correspondingly connected to two push-pull oil cylinders 212, and the two push-pull oil cylinders 212 are also arranged in a central symmetry manner. Specifically, the push-pull cylinder 212 hinged to the front swing arm 210 is disposed on one side of the rear swing arm 210, and the rear end of the cylinder body thereof is hinged to an inner wall of a mounting plate 213 on the rear side wall of the slide carriage body 21, while the push-pull cylinder 212 hinged to the rear swing arm 210 is disposed on one side of the front swing arm 210, and the rear end of the cylinder body thereof is hinged to an inner wall of a mounting plate 213 on the front side wall of the slide carriage body 21.

In order to guide the movement of the head garage support 5 on the fixed support 3 and the sliding seat body 21, two sides of each slat 22 are respectively provided with a guide rail I214 parallel to the slat, a guide rail II 31 corresponding to the guide rail I214 is installed on the fixed support 3, and a sliding block I57 matched with the guide rail I214 and the guide rail II 31 is installed at the bottom of the head garage support 5.

When the head is replaced, the sliding base body 21 is arranged opposite to the fixed support 3 where the accessory head 6 to be replaced is located, at the moment, the guide rail I214 and the guide rail II 31 can be correspondingly connected, and the head garage support 5 can be driven by the push-pull shaft 24 to move on the fixed support 3 and the sliding base body 21.

The sliding seat body 21 is provided with the placing positions of the two head warehouse supports 5, namely, each placing position corresponds to one slat 22, one push-pull shaft 24 and two guide rails I214, before the head changing operation, an accessory head 6 which is arranged in the head warehouse support 5 of one placing position and needs to be installed on a gantry machining center is placed, an empty head warehouse support 5 is placed on the other placing position, the head replacing process is used for placing the accessory head 6 which is taken down from the machining center, each placing position can realize the pulling-out or pushing-in of the head warehouse support 5 from the fixing frame 25, the automation degree of the head warehouse is provided, and the head changing efficiency is guaranteed.

In order to cooperate with the slide carriage mechanism 2, two sets of guide rails ii 31 are also provided on each fixed support 3, so that the placement of two head magazine supports 5 can be realized. The top of the fixed support 3 is arranged on the side surface of the head stock bed body 1 through a base. The number of the fixing brackets 3 can be increased according to the requirement.

Preferably, two stoppers i 32 are arranged at an edge of one side of each fixing bracket 3, which is away from the slide base body 21, and are used for limiting the pushing process of the head garage bracket 5. And a stop block II 215 is arranged at the edge of one side of the sliding seat body 21 departing from the fixed support 3 and used for limiting the pulling-out process of the head storehouse support 5.

Dog II 215 is provided with two, and through same dog support mounting between two sets of I214 guide rails, dog I32 then respectively through dog support mounting between II 32 guide rails of every group.

In order to realize the movement of the sliding seat mechanism 2 on the headstock bed body 1, a screw rod 11 positioned in the length direction of the headstock bed body 1 is installed on the headstock bed body 1, the front end of the screw rod 11 is connected with a motor 12, and the sliding seat mechanism 2 can be hung on or separated from a screw rod seat 13 of the screw rod 11.

The motor 12 drives the screw rod 11 to rotate, and when the sliding seat mechanism 2 is connected with the screw rod seat 13 in a hanging mode, the sliding seat mechanism 2 can be driven to move in the axial direction of the screw rod 11 through the screw rod seat 13.

In order to realize the hanging connection and the separation of the sliding seat mechanism 2 and the screw rod seat 13, the sliding seat mechanism 2 further comprises a hanging oil cylinder 216 installed at the bottom of the sliding seat mechanism, a piston rod of the hanging oil cylinder 216 is arranged forwards, a connecting plate 217 is hinged to the end portion of the piston rod, the connecting plate 217 is connected with one end of a shaft I218, the other end of the shaft I218 is connected with a hanging rod 219, and the hanging rod 219 can be hung on the screw rod seat 13 or separated from the screw rod seat 13 under the driving of the hanging oil cylinder 216.

The I218 horizontal rotation of axle installs on a mounting panel 213 of slide body 21 front side, the front end of articulate pole 219 is provided with the couple that the opening is down, the rear side of lead screw seat 13 is provided with the peg with couple complex, the piston rod that articulates hydro-cylinder 216 contracts back, drive the front end of articulate pole 219 and swing down, the couple then articulates on the peg, can be through the rotation of lead screw 11, drive slide mechanism 2 and remove, when the piston rod that articulates hydro-cylinder 216 stretches out, then drive the front end of articulate pole 219 and swing up, can make couple and peg separation on the lead screw seat 13.

In the head changing process, the slide mechanism 2 placed with the accessory head 6 needs to be moved from the head garage bed 1 to the rotary table 42 and then sent into the gantry machining center through the rotation of the rotary table 42 for head changing operation, in order to guide the movement of the slide mechanism 2, guide rails III 14 parallel to the guide rails are arranged on two sides of the screw rod 11, guide rails IV 43 matched with the guide rails III 14 are arranged on the rotary table 42, and the slide mechanism 2 further comprises a slide block II 220 arranged at the bottom of the slide mechanism and matched with the guide rails III 14 and the guide rails IV 43.

When the slide carriage mechanism 2 moves on the headstock bed body 1, the hanging rod 219 is hung on the screw rod seat 13, the slide carriage mechanism 2 is driven to move through the screw rod 11, after the slide carriage mechanism 2 moves to the rotary table 42, the hanging rod 219 is separated from the screw rod seat 13, the rotary table 42 drives the slide carriage mechanism 2 to rotate, and the accessory head 6 above the slide carriage mechanism is moved to a head changing station of the gantry machining center.

Preferably, in order to guide the movement of the screw rod seat 13, the bottom of the two ends of the screw rod seat 13 is provided with a slide block III 15 matched with the guide rail III 14.

In order to drive the rotation of the rotary table 42, a shaft II 44 positioned on one side of the rotary table 42 is installed on the rotary base 41, a rotary oil cylinder 45 hinged in the rotary base 41 is arranged on the side where the shaft II 44 is positioned, a rotary connecting plate 46 in running fit with the shaft II 44 is arranged on the side surface of the rotary table 42, and a piston rod of the rotary oil cylinder 45 is hinged with the rotary connecting plate 46.

Before the sliding seat mechanism 2 moves to the rotary table 42, the rotary table 42 is arranged in parallel with the head garage bed 1, the guide rail III 14 is connected with the guide rail IV 43, after the sliding seat mechanism 2 moves to the rotary table 42, the hanging rod 219 is separated from the screw rod seat 13, the piston rod of the rotary oil cylinder 45 retracts, the rotary table 42 is driven to rotate around the shaft II 44, and therefore the accessory head 6 can be conveniently sent to the gantry machining center. After the head replacement is completed, the piston rod of the rotary cylinder 45 extends out to reset the rotary table 42, and at this time, the hanging rod 219 is hung on the screw rod seat 13, so that the slide carriage mechanism 2 can be moved to the head magazine bed 1 again, and the accessory head 6 replaced from the machine tool is placed on the fixed support 3.

In order to achieve cooperation with the machine tool, the rotary cylinder 45 is located on the same side of the head magazine bed 1 as the fixed support 3, and the turn table 42 is capable of 90 ° rotation on the turn table 42 in the direction of the rotary cylinder 45.

When the accessory head 6 is replaced, firstly, the accessory head 6 to be replaced is selected, the slide carriage mechanism 2 is moved to a position opposite to the fixed support 3 where the accessory head 6 is located, the corresponding headstock support 5 is pulled out of the fixed support 3 by using the push-pull shaft 24 and is moved onto the slide carriage body 21, an empty headstock support 5 is further placed on the slide carriage body 21, at the moment, the slide carriage mechanism 2 is driven by the motor 12 to move towards the tail end of the headstock bed 1, when the slide carriage mechanism moves onto the rotary table 42, the hanging rod 219 is separated from the screw rod seat 13, the rotary oil cylinder 45 drives the rotary table 42 and the slide carriage mechanism 2 to rotate by 90 degrees, the slide carriage mechanism 2 is moved to a head replacement station of the gantry machining center, the accessory head 6 detached from the gantry machining center is placed on the empty headstock support 5, and then the required accessory head 6 is installed again. After the head is changed, the rotary table 42 is rotated and reset, the hanging rod 219 of the slide seat mechanism 2 is hung with the screw rod seat 13 again, the slide seat mechanism 2 can be driven to move on the head library bed body 1, an empty fixed support 3 position is selected, and the changed accessory head 6 is moved to the fixed support 3. The automation degree of the whole process is high, the head replacement precision is ensured, and the head replacement efficiency is improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An automatic head changing warehouse of a gantry machining center is characterized by comprising

A head stock bed body (1),

the sliding seat mechanism (2) is installed on the head library machine body (1) and can move in the length direction of the head library machine body (1);

the head library machine tool comprises a fixed support (3), wherein the fixed support (3) comprises a plurality of fixed supports which are arranged on one side of the head library machine tool body (1) in parallel, and a head library support (5) is arranged on each fixed support (3);

the rotary mechanism (4), the rotary mechanism (4) includes a rotary base (41) arranged at the tail end of the headstock lathe bed (1), and a rotary table (42) rotatably mounted on the rotary base (41);

the rotary table (42) can be connected with the head library machine body (1) in parallel or rotate relative to the head library machine body (1), the sliding seat mechanism (2) can move back and forth on the head library machine body (1) and the rotary table (42), and the head library support (5) can move back and forth on the sliding seat mechanism (2) and the fixed support (3).

2. The automatic head changing garage of a gantry machining center according to claim 1, wherein the sliding seat mechanism (2) comprises a sliding seat body (21) and two parallel laths (22) arranged in the sliding seat body (21), the laths (22) are perpendicular to the length direction of the headstock bed (1), the laths (22) are provided with sliding bar holes (23) with the same length direction as the laths, and push-pull shafts (24) capable of moving linearly in the sliding bar holes (23) are arranged in the sliding bar holes (23);

the bottom of the head garage support (5) is provided with a push-pull barrier strip (51), and the push-pull shaft (24) is matched with the push-pull barrier strip (51) to drive the head garage support (5) to move on the sliding seat body (21) and the fixed support (3).

3. The automatic head changing warehouse of a gantry machining center according to claim 2, wherein two sets of lifting supports arranged in an opposite manner are mounted at the bottom of the slat (22), each lifting support comprises a fixed frame (25) and a sloping plate (26) hinged to the inner side of the fixed frame (25), a spring (27) is connected between the sloping plate (26) and the fixed frame (25), a gap is reserved between the fixed frame (25) and the slat (22), and the top of the sloping plate (26) is movably clamped at the bottom of the slat (22);

when the push-pull shaft (24) moves from the side of the inclined plate (26) to the side of the fixing frame (25), the push-pull shaft (24) penetrates through two lifting frames in the same group, the push-pull shaft (24) moves downwards, and the lower end cap of the push-pull shaft bypasses the bottom of the lifting support;

when the push-pull shaft (24) moves from the side of the fixed frame (25) to the side of the inclined plate (26), the lower end cap of the push-pull shaft (24) penetrates through the space between the batten (22) and the lifting support.

4. The automatic head changing garage for the gantry machining center according to claim 2, wherein two centrally symmetrical swing arms (210) are rotatably mounted at the front end and the rear end of an inner cavity of the sliding base body (21), one end of each swing arm (210) is hinged with a push-pull connecting plate (211), the other end of each swing arm is hinged with a push-pull oil cylinder (212), and the push-pull connecting plates (211) are hinged with corresponding push-pull shafts (24).

5. The automatic head changing garage of the gantry machining center according to claim 2, wherein two sides of each slat (22) are respectively provided with a guide rail I (214) parallel to the slat, a guide rail II (31) corresponding to the guide rail I (214) is installed on the fixed support (3), and a sliding block I (57) matched with the guide rail I (214) and the guide rail II (31) is installed at the bottom of the head garage support (5).

6. The automatic head changing garage of a gantry machining center according to claim 1, wherein a screw rod (11) located in the length direction of the head garage bed (1) is installed, a motor (12) is connected to the front end of the screw rod (11), and the slide carriage mechanism (2) can be hung on or separated from a screw rod seat (13) of the screw rod (11).

7. The automatic head changing warehouse of a gantry machining center according to claim 6, characterized in that the slide carriage mechanism (2) further comprises a hanging cylinder (216) installed at the bottom of the slide carriage mechanism, a piston rod of the hanging cylinder (216) is arranged forward, a connecting plate (217) is hinged to the end of the piston rod, the connecting plate (217) is connected with one end of a shaft I (218), the other end of the shaft I (218) is connected with a hanging rod (219), and the hanging rod (219) can be hung on the screw rod seat (13) or separated from the screw rod seat (13) under the driving of the hanging cylinder (216).

8. The automatic head changing warehouse of a gantry machining center according to claim 6, wherein guide rails III (14) parallel to the screw rod (11) are mounted on two sides of the screw rod, a guide rail IV (43) matched with the guide rail III (14) is mounted on the rotary table (42), and the slide carriage mechanism (2) further comprises a slide block II (220) mounted at the bottom of the slide carriage mechanism and matched with the guide rail III (14) and the guide rail IV (43).

9. The automatic head changing warehouse of a gantry machining center according to claim 1, wherein a shaft II (44) located on one side of the rotary table (42) is mounted on the rotary base (41), a rotary oil cylinder (45) hinged in the rotary base (41) is arranged on the side where the shaft II (44) is located, a rotary connecting plate (46) in running fit with the shaft II (44) is arranged on the side surface of the rotary table (42), and a piston rod of the rotary oil cylinder (45) is hinged to the rotary connecting plate (46).

10. A gantry machining center automatic head changing magazine according to claim 9, characterized in that the rotary cylinder (45) and the fixed support (3) are located on the same side of the magazine bed (1) and the turret (42) is capable of 90 ° rotation on the turret (42) in the direction of the rotary cylinder (45).