CN117798712A

CN117798712A - Precise annular guide rail type tool magazine

Info

Publication number: CN117798712A
Application number: CN202311796734.0A
Authority: CN
Inventors: 单兆庆; 仲秋; 李成辉
Original assignee: Jiangsu Henry Modular Machine Tool Co ltd
Current assignee: Jiangsu Henry Modular Machine Tool Co ltd
Priority date: 2023-12-25
Filing date: 2023-12-25
Publication date: 2024-04-02

Abstract

The invention relates to the technical field of tool magazines, in particular to a precise annular guide rail type tool magazine which comprises a bottom plate, a chain, guide rails, a trolley component and a tool holder, wherein the tool holder and the trolley component are relatively fixed, the trolley component slides on the guide rails through first rollers, and is driven to move by the chain.

Description

Precise annular guide rail type tool magazine

Technical Field

The invention relates to the technical field of tool magazines, in particular to a precise annular guide rail type tool magazine.

Background

The chain type tool magazine of the large-scale machining center is generally driven by four rows of chains or more rows of chains, the chains are in non-rigid connection with the chain wheels, the driving stability is poor, and the precision is required to be improved.

In the prior art, a CN115971942A chain type tool magazine comprises a bracket and a chain, wherein the bracket is provided with a guide rail and a first limit groove; the chain is used for loading the cutter, encircles the guide rail setting, and the chain includes a plurality of chain links, every two adjacent chain links are articulated each other to be equipped with the bearing in articulated department, the chain link is equipped with the first gyro wheel that can follow the guide rail motion and stretches into the second gyro wheel of first spacing groove, and the axis of second gyro wheel sets up towards the direction of support lateral wall. The bearing is arranged at the joint of two adjacent chain links, so that the abrasion of the chain links in the transmission process is greatly reduced. Simultaneously, the axis of second gyro wheel sets up towards the direction of support lateral wall, and the second gyro wheel is a state of erectting in first spacing inslot promptly, and then in the transmission, first spacing groove has restricted the displacement of second gyro wheel on vertical direction, has effectively avoided the chain to rock in vertical direction, has improved the transmission stability of chain to the positioning accuracy of cutter has been improved. However, in this patent, the guide rail limits only the vertical position of the second roller, but the second roller is not limited in the direction away from the guide rail, and therefore the tool rest is not limited and is fixed to the guide rail, and when the tool is changed, the tool rest position is easily shifted, and the tool changing accuracy is affected.

Patent CN115971943A servo chain formula tool magazine discloses servo chain formula tool magazine, the on-line screen storage device comprises a base, the base transversely is provided with the guide rail, and the guide rail encircles and be located the inside bottom department of base, the side of guide rail is vertical to be provided with the slider, and the quantity of slider is a plurality of to the slider all distributes in the outside side department of base and encircles the removal in the side of guide rail, the both sides of slider all transversely move about and be provided with the connecting rod, and all carry out swing joint and form the transmission chain through the connecting rod between the slider to the transmission chain encircles the transmission on the base, the both sides of slider bottom are all vertical to be provided with the bearing, and the bearing all moves in the bottom of slider, the bearing all is located the left and right sides of guide rail, and the bearing all moves in the both sides of guide rail, the side of slider transversely is provided with the cutter holder, and carries out the syntropy transmission between cutter holder and the slider to the inside vertical cartridge cutter of cutter. In this patent, adopt rectangular guide rail structure clearance great, and still there is no positioning mechanism in this patent, the inaccurate problem of location.

Disclosure of Invention

The invention solves the problems that: in the prior art, the tool magazine has poor transmission stability and high precision, and the precision is to be improved, so that the precise annular guide rail type tool magazine with high rigidity and high precision is provided.

The invention is realized by the following technical scheme that the precise annular guide rail type tool magazine comprises:

the base plate is a rigid flat plate, and the rest parts of the tool magazine are all erected on the base plate;

the chain is rotatably arranged on the first side of the bottom plate, is in an annular tightening shape and is driven to circularly rotate by the first driving mechanism;

the guide rail is fixedly arranged on the first side of the bottom plate and is arranged at equal intervals with the chain, and concave/convex V-shaped surfaces are arranged on two sides of the guide rail;

the trolley components comprise four rotatable first idler wheels, the appearance of each first idler wheel is matched with the V-shaped surface of the annular guide rail, the first idler wheels tightly hold the rails from two sides of the rails, the trolley components are provided with a plurality of trolley components, each trolley component is connected with one chain link of the chain, and the intervals of the chain links connected with the adjacent trolley components are equal;

the tool holder is relatively fixed with the trolley component, and a tool is clamped on the tool holder;

the positioning mechanism comprises a positioning block fixed on the trolley component and a positioning head fixed on the bottom plate and capable of moving or swinging, and the positioning head is matched with the positioning block.

Further, still include first connecting plate, first connecting plate is used for connecting dolly subassembly and cutter holder, install two at least universal balls on the first connecting plate, universal ball and bottom plate offset, the position of universal ball butt is located the outside of guide rail.

Further, the base plate is provided with wear-resistant white steel bars for being abutted with the universal balls.

Further, the bottom plate is still fixed mounting has the second connecting plate in tool changing position department, the second connecting plate is located the inboard position of dolly subassembly, rotate on the second connecting plate and be provided with two second gyro wheels, the wiring direction of two second gyro wheels is parallel with this department guide rail dish, the side butt of second gyro wheel and first connecting plate.

Further, a third connecting plate is fixedly connected to the second connecting plate, two third rollers are rotatably arranged on the third connecting plate, and the third rollers are connected with the back surface of the tool holder in a bottom connection mode.

Further, the positioning head is fixedly arranged on the swing arm, the swing arm is arranged on the second side of the bottom plate in a transferring way through the rotating shaft, and the second side of the bottom plate is also provided with a cylinder which is used for driving the rotating shaft to rotate.

Further, in the trolley assembly, the first rollers are rotatably mounted on the first mounting plate, and the distance between the two first rollers on the outer side is larger than the distance between the two first rollers on the inner side.

Further, in the carriage assembly, four first rollers are divided into two pairs, each pair of first rollers being rotatably mounted on a second mounting plate rotatably mounted on a third mounting plate by bearings.

The beneficial effects of the invention are as follows:

1. according to the invention, the chain wheel is driven by the first driving mechanism to rotate, the chain is driven to circularly rotate, the chain drives the trolley component to slide on the track, the trolley component is arranged on the track in a sliding manner through the V-shaped positioning of the four first rollers, the problem of lower rigidity of the traditional chain type tool magazine is avoided, the tool changing speed can be improved, and the transmission stability is improved.

2. The invention is provided with the universal ball support, provides a supporting force parallel to the length direction of the cutter during the cutter changing, improves the rigidity of the cutter magazine, avoids the damage of the guide rail and the first roller caused by circumferential torque,

3. the second roller and the third roller are respectively abutted against the side face of the first connecting plate and the back face of the cutter holder, so that the position accuracy of the trolley assembly at the cutter changing position can be improved, and the rigidity of the trolley assembly can be improved.

4. The tool holder is also provided with a positioning mechanism, and the positioning head swings and is inserted into the positioning block during tool changing, so that the position of the tool holder at the tool changing position is ensured to be accurate.

5. The first rollers of the trolley assembly can adopt two structures, and can be in close contact with the guide rails all the time, so that the phenomenon of overlarge gap or jamming can not occur.

Drawings

FIG. 1 is a schematic diagram of a precise annular guide rail type tool magazine according to the present invention;

FIG. 2 is a schematic view of a precise annular guide type tool magazine according to the present invention (with the bottom plate removed;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic view of the positioning mechanism, the first connecting plate, and the second connecting plate at the tool changing position;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 5 with a ball attached thereto;

FIG. 7 is a schematic view of the structure of a universal ball;

fig. 8 is a view showing the installation position of the white steel bar;

FIG. 9 is a position diagram of a first roller in the trolley assembly;

FIG. 10 is a diagram of a method of determining the position of the first roller of the structure of FIG. 9;

FIG. 11 is a schematic view of an assembled configuration of a first roller in the cart assembly;

in the figure: 1, a bottom plate;

2, a chain;

3a first driving mechanism;

4, a guide rail;

5 a trolley assembly; 501 a first roller; 502 a first mounting plate; 503 a second mounting plate; 504 a third mounting plate;

6 knife holders;

7, a first connecting plate;

8, universal ball;

9, white steel bars;

10 a second connecting plate;

11 a second roller;

12 a third connecting plate;

13 a third roller;

14 a positioning mechanism; 1401 a positioning block; 1402 positioning a head; 1403 swing arms; 1404 rotating the shaft; 1405 cylinder.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-3, a precision type circular guide type tool magazine includes: a bottom plate 1, a chain 2, a guide rail 4, a trolley assembly 5, a tool holder 6 and a positioning mechanism 14,

the base plate 1 is a rigid flat plate, and the rest parts of the tool magazine are erected on the basis of the base plate 1;

the chain 2 is rotatably arranged on the first side of the bottom plate 1, the chain 2 is in a ring-shaped tightening shape, and the first driving mechanism 3 drives the chain to circularly rotate; the bottom plate 1 is provided with a sprocket wheel in an up-down rotation mode, the chain 2 is wound on the two sprocket wheels in a tightening mode, the first driving mechanism 3 is a servo motor and a speed reducer and is arranged on the second side of the bottom plate 1, and the sprocket wheel above the first driving mechanism is driven to rotate, so that the chain 2 is driven to rotate circularly.

The guide rail 4 is fixedly arranged on the first side of the bottom plate 1 through a fastener, is arranged at equal intervals with the chain 2, is waist-shaped like the chain 2, and comprises an upper semicircular guide rail 4, a lower semicircular guide rail 4 and a linear guide rail 4 with two parallel middle ends, wherein both sides of the guide rail 4 are provided with concave/convex V-shaped surfaces;

the trolley assemblies 5 comprise four rotatable first rollers 501, the shapes of the first rollers 501 are matched with the V-shaped faces of the annular guide rails 4, the first rollers 501 are used for holding the rails from two sides of the rails, the trolley assemblies 5 are provided with a plurality of trolley assemblies, each trolley assembly 5 is connected with one chain link of the chain 2, the intervals of the chain links connected with the adjacent trolley assemblies 5 are equal, in this case, 40 trolley assemblies 5, 240 chain links are arranged in total, and each 6 chain links are connected with one trolley assembly 5;

the tool holder 6 and the trolley component 5 are relatively fixed, a tool is clamped on the tool holder 6, and the tool holder 6 can be selected according to actual use requirements.

The positioning mechanism 14, as shown in fig. 4-5, the positioning mechanism 14 includes a positioning block 1401 fixed on the trolley assembly 5 and a positioning head 1402 fixed on the base plate 1 and capable of moving or swinging, and the positioning head 1402 and the positioning block 1401 are matched. In this scheme, when changing the sword, will need the cutter remove tool changing position department, the locating head 1402 removes the constant head tank of inserting locating piece 1401, realizes the location of the upper and lower position of dolly subassembly 5, improves the precision.

In this scheme, by servo motor drive sprocket rotation, drive chain 2 circulation rotation, chain 2 drive trolley subassembly 5 slides on the track, and trolley subassembly 5 slides on the track through the V-arrangement of four first gyro wheels 501, and the rigidity is higher and is set up on the track, has avoided the lower problem of traditional chain tool magazine rigidity to can improve the tool changing speed, improve driven stability, and through positioning mechanism 14, realize the location of trolley subassembly 5 upper and lower position.

As shown in fig. 7-8, in practical application, the device further comprises a first connecting plate 7, the first connecting plate 7 is used for connecting the trolley component 5 and the tool holder 6, at least two universal balls 8 are mounted on the first connecting plate 7, the universal balls 8 are also called bullseye bearings, the universal balls 8 are abutted against the bottom plate 1, and the abutted position of the universal balls 8 is located on the outer side of the guide rail 4. And the base plate 1 is provided with wear-resistant white steel bars 9 which are used for being abutted with the universal balls 8. In this scheme, owing to the support of universal ball 8, consequently when the tool changing, provide a holding power that is on a parallel with cutter length direction, improve the rigidity of tool magazine, thereby avoid guide rail 4 and first gyro wheel 501 to receive the moment of torsion of circumference and damage, on the other hand universal ball 8 can reduce the frictional force of contact to adopt white steel strip 9, can improve the wearability, improve life.

As shown in fig. 4-5, in practical application, the second connecting plate 10 is fixedly installed at the tool changing position of the bottom plate 1, the second connecting plate 10 is located at the inner side of the trolley assembly 5, two second rollers 11 are rotatably arranged on the second connecting plate 10, the connecting line direction of the two second rollers 11 is parallel to the guide rail 4 disc at the position, and the second rollers 11 are abutted against the side surface of the first connecting plate 7. In this case, the two second rollers 11 are pushed inside the first connecting plate 7, so that the position accuracy of the carriage assembly 5 at the tool changing position can be improved.

As shown in fig. 4-5, in practical application, the second connecting plate 10 is further fixedly connected with a third connecting plate 12, two third rollers 13 are rotatably disposed on the third connecting plate 12, and the third rollers 13 are in bottom connection with the back surface of the tool holder 6. In this embodiment, the third roller 13 provides a thrust force directed to the bottom plate 1, so that the rigidity of the trolley assembly 5 can be improved, and the guide rail 4 is not affected by the impact force during tool changing.

As shown in fig. 6, the universal ball 8, the wear-resistant white steel bar 9, the second roller 11 and the third roller 13 are additionally arranged, the universal ball 8 forms a support at the outer side of the first connecting plate 7, the chain 2 forms a support at the inner side of the trolley component 5, the first roller 501 and the guide rail 4 complete the guiding and positioning function, the second roller 11 props against the inner side of the first connecting plate 7, the third roller 13 tightly presses the trolley component 5 on the bottom plate 1, the multi-point supports and cooperates with the third roller 13 to tightly press, so that the first roller 501 and the guide rail 4 are not influenced by torque when the cutter is replaced, and the integral rigidity is improved.

As shown in fig. 4-5, in practical application, the positioning head 1402 is fixedly mounted on the swing arm 1403, the swing arm 1403 is transferred to the second side of the base plate 1 through the rotating shaft 1404, a hole is formed in the base plate 1, the swing arm 1403 passes through the hole to reach the first side of the base plate 1, and the main structure is mounted on the second side of the base plate 1, so that the mounting space of the first side can be reduced, the structure is more compact, the air cylinder 1405 is further mounted on the second side of the base plate 1, and the air cylinder 1405 is used for driving the rotating shaft to rotate. The swing arm 1403 adopts adjustable structure, and the swing arm 1403 side is provided with the opening to fasten through the bolt, consequently can realize that the swing arm 1403 position can realize adjusting, convenient debugging. The cylinder body of the air cylinder 1405 is rotatably arranged on the bottom plate 1, and the piston shaft of the air cylinder 1405 rotates another swing rod connected to the rotating shaft 1404, so that the rotating shaft 1404 can be rotated by the action of the air cylinder 1405, and the swing arm 1403 swings, so that the positioning head 1402 and the positioning block 1401 are matched and separated.

In practical applications, as shown in fig. 9-10, in the trolley assembly 5, the first rollers 501 are rotatably mounted on the first mounting plate 502, and the spacing between the outer two first rollers 501 is greater than the spacing between the inner two first rollers 501. The positions of the four first rollers 501 are determined by the following method, wherein the middle black part represents the guide rail 4, the outer two lines represent the movement track of the center of the rollers, the intersection points of the two parallel linear movement tracks and the two circular county movement tracks, and the distance between the two parallel straight lines is equal to the distance between the two concentric arc lines, so that the four intersection points are the positions of the centers of the first rollers 501; when the first roller 501 is arranged in this way, the first roller 501 and the guide rail 4 are tightly matched on the linear guide rail 4 and the arc-shaped guide rail 4, and no gap exists, so that the tight matching of the trolley assembly 5 and the linear guide rail/arc-shaped guide rail respectively is ensured, and the problem of blocking or overlarge gap does not occur. This scheme is applicable to the arc guide rail 4 of fixed diameter.

As shown in fig. 11, in practical applications, the first rollers 501 of the cart assembly 5 may take other forms, in which the cart assembly 5 is divided into two pairs, each pair of first rollers 501 is rotatably mounted on a second mounting plate 503, and the second mounting plate 503 is rotatably mounted on a third mounting plate 504 through a bearing. The second mounting plate 503 can rotate around the bearing at the arc-shaped track, so that in the running process, the four rollers are always in close contact with the guide rail 4, and the problem of blocking or overlarge gap cannot occur. The scheme is suitable for the arc-shaped guide rail 4 with any diameter, so that the guide rail 4 can break through the limitation of waist shape, for example, the upper chain wheel and the lower chain wheel can be of different diameters, or the guide rail 4 is arranged in an S shape, and four first rollers and the guide rail 4 can be in close contact all the time.

Compared with the prior art, the trolley component 5 is slidably arranged on the guide rail 4 through V-shaped positioning of the four first rollers 501, the rigidity is higher, the connecting structure can ensure that only one direction of six degrees of freedom of the trolley component 5 moves, the high-rigidity structure cannot move and rotate in other directions, the stability is higher, the rigidity of the tool magazine is further improved through the universal ball 8, the second rollers 11 and the third rollers 13, the precision problem caused by chain transmission is eliminated through the positioning mechanism 14, and finally, the first rollers 501 can be tightly matched on the arc guide rail 4 or the linear guide rail 4 through the structural design of the first rollers 501.

In summary, the precise annular guide rail type tool magazine has the advantages of high rigidity, high speed and high stability, and is not influenced by the tightness of the chain.

The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention can be implemented by those skilled in the art without limiting the scope of the invention, therefore, all equivalent changes or modifications that are made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A precision type annular guide rail type tool magazine is characterized in that: comprising the following steps:

the base plate (1) is a rigid flat plate, and the rest parts of the tool magazine are erected on the basis of the base plate (1);

the chain (2) is rotatably arranged on the first side of the bottom plate (1), the chain (2) is in a ring-shaped tightening shape, and the first driving mechanism (3) drives the chain to circularly rotate;

the guide rail (4) is fixedly arranged on the first side of the bottom plate (1) and is arranged at equal intervals with the chain (2), and concave/convex V-shaped surfaces are arranged on two sides of the guide rail (4);

the trolley assembly (5) comprises four rotatable first rollers (501), the shapes of the first rollers (501) are matched with the V-shaped faces of the annular guide rails (4), the first rollers (501) tightly hold the rails from two sides of the rails, the trolley assembly (5) is provided with a plurality of trolley assemblies, each trolley assembly (5) is connected with one chain link of the chain (2), and the intervals of the chain links connected with adjacent trolley assemblies (5) are equal;

the tool holder (6) and the trolley assembly (5) are relatively fixed, and a tool is clamped on the tool holder (6);

the positioning mechanism (14) comprises a positioning block (1401) fixed on the trolley assembly (5) and a positioning head (1402) fixed on the bottom plate (1) and capable of moving or swinging, and the positioning head (1402) is matched with the positioning block (1401).

2. The precision type annular guide rail type tool magazine according to claim 1, wherein: still include first connecting plate (7), first connecting plate (7) are used for connecting dolly subassembly (5) and cutter holder (6), install two at least universal balls (8) on first connecting plate (7), universal ball (8) and bottom plate (1) offset, the position of universal ball (8) butt is located the outside of guide rail (4).

3. The precision type annular guide rail type tool magazine according to claim 2, wherein: the base plate (1) is provided with a wear-resistant white steel bar (9) which is used for being abutted with the universal ball (8).

4. The precision type annular guide rail type tool magazine according to claim 2, wherein: the bottom plate (1) is still fixed mounting has second connecting plate (10) in tool changing position department, second connecting plate (10) are located dolly subassembly (5) inboard position, rotate on second connecting plate (10) and be provided with two second gyro wheels (11), the wiring direction of two second gyro wheels (11) is parallel with this department guide rail (4) dish, the side butt of second gyro wheel (11) and first connecting plate (7).

5. The precision annular guide rail type tool magazine as claimed in claim 4, wherein: and a third connecting plate (12) is fixedly connected to the second connecting plate (10), two third rollers (13) are rotatably arranged on the third connecting plate (12), and the third rollers (13) are connected with the back surface of the tool holder (6) in a bottom joint mode.

6. The precision type annular guide rail type tool magazine according to claim 1, wherein: the positioning head (1402) is fixedly arranged on the swing arm (1403), the swing arm (1403) is arranged on the second side of the bottom plate (1) in a transferring mode through the rotating shaft (1404), the second side of the bottom plate (1) is further provided with the air cylinder (1405), and the air cylinder (1405) is used for driving the rotating shaft to rotate.

7. The precision annular guide rail type tool magazine according to any one of claims 1-6, wherein: in the trolley assembly (5), the first rollers (501) are rotatably mounted on the first mounting plate (502), and the distance between the two first rollers (501) on the outer side is larger than the distance between the two first rollers (501) on the inner side.

8. The precision annular guide rail type tool magazine according to any one of claims 1-6, wherein: in the trolley assembly (5), four first rollers (501) are divided into two pairs, each pair of first rollers (501) is rotatably mounted on a second mounting plate (503), and the second mounting plate (503) is rotatably mounted on a third mounting plate (504) through a bearing.