Tool changing mechanism capable of being freely combined at multiple angles

Abstract

The tool changing mechanism capable of being freely combined at multiple angles comprises a tool apron, three tool magazine supports are arranged at the top of the tool apron at intervals, the first end of each tool magazine support horizontally extends out of one side of the tool apron, and the first end of each tool magazine support is provided with a first mounting side and a second mounting side; each tool magazine support is rotatably provided with a tool magazine assembly, the tool apron is slidably provided with a main shaft installation base, each main shaft installation base is provided with an electric main shaft used for clamping a tool, and the tool magazine assemblies are located in front of the electric main shafts. The tool magazine assembly can be installed in any installation side according to requirements, the applicability of the numerical control machine tool is improved, meanwhile, the motorized spindle is different from a traditional motorized spindle which needs to be additionally provided with a driving motor, the load of the sliding base is reduced, the vibration amplitude of the motorized spindle in the working process is smaller, more excellent machining smoothness can be obtained in the machining process, and energy consumption in the working process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic equipment technical field, in particular to a kind of multi-angle free combination's tool changing mechanism. BACKGROUND

[0002] Numerical control machine tool is the main cutting equipment of mechanical processing now, and machining center is the most commonly used machine tool of numerical control machine tool. With the progress of technology and the efficiency requirement to mechanical processing, there are more double-spindle even multi-spindle machining machine tools in the market at present;And each spindle is equipped with a set of tool magazine, and then it is convenient to change tool, and improve processing efficiency. However, in the prior art, for the vertical drilling and tapping machine using the clamping arm type tool magazine, the tool magazine is arranged at the front end of the spindle;However, since the clamping arm type tool magazine is in the form of a disc structure, in order to meet the requirement that each spindle has a corresponding tool magazine, and not to affect each other during use, it is necessary to increase the distance between adjacent spindles, resulting in the widening of the column, or each spindle needs a column, which not only increases the volume of the equipment, but also increases the cost of the equipment. To solve this problem, the inventor designed the authorized utility model patent No. CN202221877973. X, which discloses a support structure of clamping arm type tool magazine, comprising a gantry, the first drilling and tapping device, the second drilling and tapping device and the third drilling and tapping device are sequentially and spacedly arranged on the gantry;The front end of the first drilling and tapping device is provided with a first tool magazine inclined by 18° away from the second tool magazine, the front end of the third drilling and tapping device is provided with a third tool magazine inclined by 18° away from the second tool magazine, and the inclination directions of the first tool magazine and the third tool magazine are opposite. The above structure is adopted

[0003] The first drilling and tapping device and the third drilling and tapping device are respectively inclined by 18° in opposite directions, so that the plurality of drilling and tapping devices do not affect each other during operation;And the inclined structure design enables the gantry to accommodate more drilling and tapping devices in a limited length, reduces the overall floor area of the machine tool, improves the working efficiency, and enables the operator to directly observe the tool changing process, reduces the accident rate and improves the safety of tool changing operation. However, the inventor found that this structure still has disadvantages in actual use, i.e. the inclination direction of the tool magazine is fixed and cannot be changed, resulting in great limitation.

[0004] Therefore, it is urgent to design a multi-angle free combination tool changing mechanism to overcome one or more of the above deficiencies of the prior art. SUMMARY

[0005] The utility model discloses a technical scheme that solves the above technical problem is: a multi-angle free combination's tool changing mechanism, it is characterized by including: tool apron, the top of tool apron is provided with three tool magazine support at intervals, the first end of every tool magazine support all extends the one side of tool apron horizontally, the first end of every tool magazine support all is equipped with first installation side and second installation side, the first installation side is with predetermined angle towards first direction, the second installation side is with predetermined angle towards second direction, the first installation side or second installation side of every tool magazine support is equipped with tool magazine assembly rotationally, the one side of tool apron is equipped with the main shaft mounting seat corresponding with tool magazine support at tool magazine support extension, the main shaft mounting seat is connected with tool apron slidingly, every main shaft mounting seat all is equipped with electric spindle, and the end of electric spindle is equipped with tool holder for clamping tool, and tool magazine assembly is located in the front of electric spindle.

[0006] In a preferred embodiment, the angle of orientation between the first installation side and the second installation side of each tool magazine support is the same.

[0007] In a preferred embodiment, the tool magazine assembly comprises: a connecting plate fixedly connected to the first end of the tool magazine support, a tool magazine swing arm rotatably connected to one end of the connecting plate away from the tool magazine support, and a tool disc connected to one end of the tool magazine swing arm away from the connecting plate, a plurality of clamps fixedly connected to the tool disc, and the tool clamped by the clamps is fixed on the tool disc; the tool disc can be tilted and rotated relative to the tool magazine support through the tool magazine swing arm.

[0008] In a preferred embodiment, the clamp comprises: a knife arm in an arc shape, one end of the knife arm fixedly connected to the tool disc, the other end of the knife arm provided with an arc-shaped groove, both sides of one end of the knife arm provided with the arc-shaped groove rotatably connected with clamping pieces, the tail ends of the two clamping pieces connected with elastic pieces, and the two clamping pieces approaching each other under the action of the elastic pieces away from one end provided with the elastic pieces.

[0009] In a preferred embodiment, the arc-shaped groove further comprises a protruding limiting block in the middle.

[0010] The utility model discloses an advantageous effect is: through setting up two different installation sides of orientation of first end of tool magazine support, makes tool magazine assembly can be installed in any one installation side according to demand, promotes the applicability of numerical control machine tool, and the cooperation of tool magazine assembly and electric spindle replaces the assistance of traditional need to hit sword mechanism, has saved machine tool debugging's procedure, has reduced the failure rate because of the working mode of sword hitting mechanism, simultaneously can not because of the noise of collision when changing sword, simultaneously electric spindle is unlike traditional need to add driving motor, has reduced the load of slide, and the vibration amplitude when electric spindle works is smaller, can obtain more excellent processing smoothness when processing, reduces the energy consumption in work. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model;

[0012] Figure 2 It is the structural schematic diagram of the utility magazine support of the utility model;

[0013] Figure 3 It is the exploded view of the utility model tool magazine assembly;

[0014] Figure 4 It is the structural schematic diagram of the utility model clamp;

[0015] Figure 5 It is the other orientation schematic diagram of the utility model tool magazine assembly;

[0016] Figure 6 It is the schematic diagram of the utility model single tool magazine.

[0017] In the drawing:

[0018] 10, tool seat;11, main shaft mounting seat;111, electric spindle;112, tool holder;12, tool magazine assembly;121, tool magazine support;122, connecting plate;123, tool magazine swing arm;124, tool disc;125, first installation side;126, second installation side;13, clamp;131, sword arm;132, arc slot;133, limit bump;134, clamping piece;135, limit wheel;14, tool magazine. DETAILED DESCRIPTION

[0019] In order to make the above -mentioned purpose, feature and advantage of the utility model can be more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below with the drawings. In the following description, a lot of specific details are set forth to facilitate a full understanding of the utility model. But the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0020] In the description of the embodiments of the utility model, it needs to be explained that, unless there is explicit stipulation and limitation, the terms, "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, also can be inseparable connection, can be direct connection, also can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, also can be indirect communication through intermediate medium. Among them, "fixing" refers to the relative position relationship of each other after connection does not change. The orientation language mentioned in the embodiments of the utility model, for example, "inner", "outer", "top", "bottom" and the like, only refers to the direction of the drawing, therefore, the orientation language used is for better, more clearly illustrate and understand the embodiments of the utility model, and is not indicated or implied that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the utility model.

[0021] In the embodiments of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0022] In the embodiments of the utility model, "and / or" is only a description of the association relationship of the associated object, which means that there can be three kinds of relationships, for example, A and / or B, which can mean that there are three kinds of situations, namely, A alone, A and B exist simultaneously, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0023] In the description of the embodiments of the utility model, "one embodiment" or "some embodiments" means that in one or more embodiments of the utility model, the specific features, structures or characteristics described in connection with the embodiment are included. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in the description are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized. Therefore, the utility model is not limited by the specific embodiments disclosed below.

[0024] As Figures 1-6As shown, a multi-angle freely combined tool changing mechanism is provided, characterized in that it comprises a tool seat 10, three tool magazine supports 121 are arranged at the top of the tool seat 10 at a predetermined interval, the first end of each tool magazine support 121 extends horizontally out of one side of the tool seat 10, the first end of each tool magazine support 121 is provided with a first mounting side 125 and a second mounting side 126, the first mounting side 125 is directed at a predetermined angle to a first direction, and the second mounting side 126 is directed at a predetermined angle to a second direction, the first mounting side 125 or the second mounting side 126 of each tool magazine support 121 is rotatably provided with a tool magazine assembly 12, the tool seat 10 is provided with a main shaft mounting seat 11 corresponding to the tool magazine support 121 on the side extending out of the tool magazine support, the main shaft mounting seat 11 is slidably connected to the tool seat 10, and each main shaft mounting seat 11 is provided with an electric spindle 111, the end of the electric spindle 111 is provided with a tool holder 112 for clamping a tool, and the tool magazine assembly 12 is located in front of the electric spindle 111;

[0025] Specifically, three tool magazine supports 121 are arranged at the top of the tool seat 10 at a predetermined interval, and the first end of each tool magazine support extends horizontally out of one side of the tool seat 10, for connecting the tool magazine assembly 12 and making the tool magazine assembly 12 away from the tool seat 10, the first end of each tool magazine assembly 12 is provided with a first mounting side 125 and a second mounting side 126, the first mounting side 125 and the second mounting side 126 are directed in different directions, such as one is directed to the left front and the other is directed to the right front, so that the tool magazine assembly 12 can be selected in one of the two directions according to the machining requirement, to improve the applicability of the numerical control machine tool, the traditional tool magazine support 121 can only install the tool magazine assembly 12 in one direction, resulting in the need to replace the tool magazine support 121 or the numerical control machine tool when there is other requirement, low machining efficiency and high cost; a main shaft mounting seat 11 is arranged below each tool magazine support 121, the main shaft mounting seat 11 is slidably connected to the tool seat 10 through screw rod transmission, the main shaft mounting seat 11 can slide in the vertical direction relative to the tool seat 10, the screw rod transmission is prior art and will not be described here; an electric spindle 111 is fixedly arranged at the end of the main shaft mounting seat 11, the electric spindle 111 is composed of an electric mechanism, a tool holder 112 is arranged at the output end of the electric spindle 111 for clamping a tool; each tool magazine assembly 12 connected to the tool magazine support 121 can rotate relative to the tool magazine support 121, the tool magazine support 121 can be rotated and inclined towards the direction of the electric spindle 111, when the tool needs to be replaced, the tool magazine assembly 12 is inclined towards the direction of the electric spindle 111, then the electric spindle 111 is lowered, the tool end of the tool magazine assembly 12 is inserted into the electric spindle 111, then the tool magazine assembly 12 is rotated away from the electric spindle 111 to avoid affecting the electric spindle 111, and then the electric spindle 111 can continue to be lowered until the working height.

[0026] Since the tool magazine assembly 12 itself is rotatable and can be close to or away from the electric spindle 111, and the first mounting side 125 and the second mounting side 126 have the same orientation angle, the electric spindle 111 can be adapted even if the tool magazine assembly 12 changes the orientation, without moving the electric spindle 111, and the debugging is simpler and faster.

[0027] As shown in the drawings, the structure according to the present application can also realize single-tool magazine or double-tool magazine setting. Figure 6 As shown in the drawings, the structure according to the present application can also realize single-tool magazine or double-tool magazine setting.

[0028] Further, the tool magazine assembly 12 comprises a connecting plate 122 fixedly connected with a first end of the tool magazine support 121, a tool magazine swing arm 123 rotationally connected with an end of the connecting plate 122 away from the tool magazine support 121, a tool disc 124 connected with an end of the tool magazine swing arm 123 away from the connecting plate 122, a plurality of clamps 13 fixedly connected on the tool disc 124, and the tool is clamped and fixed on the tool disc 124 by the clamps 13; the tool disc 124 can be rotationally inclined to the direction of the electric spindle 111 through the tool magazine swing arm 123, and can rotate relative to the tool magazine support 121;

[0029] Specifically, the connecting plate 122 is fixed on the first mounting side 125 or the second mounting side 126, the tool magazine swing arm 123 is rotationally connected on the connecting plate 122, and the other end of the tool magazine swing arm 123 is connected with the tool disc 124, wherein the swing of the tool magazine swing arm 123 is controlled in a pneumatic manner to realize automation, and a plurality of equidistant clamps are arranged on the tool disc 124 along the side wall of the tool disc 124, the clamps are used for clamping the tool, so that the tool moves with the tool disc 124 through the clamping of the tool disc 124 and the movement of the tool magazine swing arm 123.

[0030] Further, the clamp 13 comprises: a cutter arm 131, which is arc-shaped, one end of the cutter arm 131 is fixedly connected with the cutter head 124, the other end of the cutter arm 131 is provided with an arc-shaped groove 132 concave, two sides of the end of the cutter arm 131 provided with the arc-shaped groove 132 are respectively rotationally connected with clamping pieces 134, the tail ends of the two clamping pieces 134 are connected with elastic members (not shown in the figure), the ends of the two clamping pieces 134 away from the ends provided with the elastic members are close to each other under the action of the elastic members, the end portions of the two clamping pieces 134 close to each other are rotationally connected with limit wheels 135, wherein, in order to facilitate the replacement and clamping of the cutter, the cutter head 124 is connected with the cutter arm 131, the cutter arm 131 is arc-shaped, so that the cutter can be placed at a predetermined angle when clamped by the clamp 13, which is convenient for corresponding to the electric spindle 111, the end of the cutter arm 131 away from the cutter head 124 is provided with the arc-shaped groove 132 concave, the arc-shaped groove 132 is matched with the side wall of the cutter, meanwhile, two sides of the end of the cutter arm 131 provided with the arc-shaped groove 132 are respectively rotationally connected with the clamping pieces 134, the middle portions of the clamping pieces 134 are rotationally connected with the cutter arm 131, meanwhile, in order to realize the clamping force of the clamping pieces 134, the tail ends of the two clamping pieces 134 are provided with the elastic members, so that the ends of the two clamping pieces 134 are away from each other, when the ends of the two clamping pieces 134 are away from each other, the other ends of the two clamping pieces 134 are close to each other due to the rotational connection between the middle portions of the clamping pieces 134 and the cutter arm 131, wherein the ends of the two clamping pieces 134 are in a non-contact state, the distance between the ends of the two clamping pieces 134 needs to be less than the maximum width of the cutter, when the cutter needs to be removed from the electric spindle 111, the clamp 13 is close to the electric spindle 111 by the swinging of the tool magazine swing arm 123, and the ends of the two clamping pieces 134 close to each other are in contact with the cutter, and the two clamping pieces 134 are opened in the direction away from each other under the extrusion of the cutter by the continuous movement of the tool magazine swing arm 123, meanwhile, the other ends of the two clamping pieces 134 will compress the elastic members, so that the elastic members generate a restoring force acting on the clamping pieces 134, at this time, after the cutter enters the middle portions of the two clamping pieces 134, the drill chuck 114 releases the cutter, the clamping pieces 134 clamp the cutter under the action of the elastic members, at this time, the electric spindle 111 can be raised, so that the end portion of the cutter is separated from the drill chuck 114 and clamped by the clamping pieces 134, then the tool magazine swing arm 123 moves reversely, so that the cutter is clamped out by the clamp 13, and the disassembly of the cutter is completed, wherein, in order to avoid the friction between the clamping pieces 134 and the cutter, and to enable the clamping pieces 134 to clamp the cutter, the limit wheels 135 are rotationally arranged at the ends of the clamping pieces 134 away from the elastic members, so that when the clamping pieces 134 are in contact with the cutter, the limit wheels 135 are rotationally arranged, so as to avoid friction, and the cutter is fixed by the friction between the limit wheels 135 and the cutter after the clamping pieces 134 clamp the cutter.

[0031] Further, the middle part of the arc-shaped groove 132 is also provided with a protruding limiting block 133, and the middle part of the arc-shaped groove 132 is also provided with a protruding limiting block 133, the limiting block 133 is matched with the groove in the middle part of the cutter, so that the cutter is located in the arc-shaped groove 132, the limiting block 133 is inserted into the groove, thereby realizing the fixation of the cutter in the up-down direction, and the limiting wheel 135 is further matched to improve the clamping stability.

[0032] Wherein the outer side of the cutter head 124 is also provided with a tool magazine 14, to prevent debris and other sundries from entering during work.

[0033] In summary, the present application sets two different orientations of the installation side at the first end of the tool magazine support, so that the tool magazine assembly can be installed in any one installation side according to the demand, improving the applicability of the numerical control machine tool, and the cooperation of the tool magazine assembly and the electric spindle replaces the assistance of the traditional tool changing mechanism, saving the process of machine tool debugging, reducing the failure rate caused by the working mode of the tool changing mechanism, and at the same time, the noise caused by the collision during tool changing is avoided, and the electric spindle is different from the traditional need to add a driving motor, reducing the load of the slide, and the vibration amplitude of the electric spindle during work is smaller, and the machining smoothness during machining is more excellent, and the energy consumption during work is reduced.

[0034] The utility model is not limited to the description in the specification and the embodiment, so that the person skilled in the art can easily realize other advantages and modifications, and therefore the utility model is not limited to specific details, representative equipment and the drawing examples shown and described herein without departing from the general concept and range defined by the claims and equivalent range.

Claims

1. A multi-angle freely combinable tool changer, characterized in that, include: The tool holder has three tool magazine supports spaced apart on its top. The first end of each tool magazine support extends horizontally out of one side of the tool holder. Each tool magazine support has a first mounting side and a second mounting side at its first end. The first mounting side faces a first direction at a predetermined angle, and the second mounting side faces a second direction at a predetermined angle. A tool magazine assembly is rotatably mounted on the first or second mounting side of each tool magazine support. The tool holder has a spindle mounting seat corresponding to the tool magazine support on the side extending from the tool magazine support. The spindle mounting seat is slidably connected to the tool holder. Each spindle mounting seat has an electric spindle. The end of the electric spindle has a tool clamp for holding the tool. The tool magazine assembly is located in front of the electric spindle.

2. The multi-angle freely combinable tool changer according to claim 1, characterized in that, The orientation angle between the first mounting side and the second mounting side of each of the tool magazine brackets is the same.

3. The multi-angle free combination tool changer according to claim 1, characterized in that, The tool magazine assembly includes: a connecting plate, which is fixedly connected to a first end of the tool magazine bracket; a tool magazine swing arm is rotatably connected to the end of the connecting plate away from the tool magazine bracket; a tool disc is connected to the end of the tool magazine swing arm away from the connecting plate; a plurality of clamps are fixedly connected to the tool disc; the tool is clamped and fixed on the tool disc by the clamps; the tool disc can rotate and tilt in the direction of the electric spindle via the tool magazine swing arm, and can rotate relative to the tool magazine bracket.

4. The multi-angle free combination tool changer according to claim 3, characterized in that, The clamp includes: a cutter arm, which is arched, with one end of the cutter arm fixedly connected to the cutter disc, and the other end of the cutter arm having a concave arc-shaped groove. Clamping members are rotatably connected to both sides of the end of the cutter arm with the arc-shaped groove. Elastic members are connected to the tail ends of the two clamping members. The ends of the two clamping members away from the elastic members are brought together by the force of the elastic members. Limiting wheels are rotatably connected to the ends of the two clamping members that are close together.

5. The multi-angle free combination tool changer according to claim 4, characterized in that, The arc-shaped groove is also provided with a protruding limiting protrusion in the middle.

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