Gantry machine tool accessory milling head replacing mechanism

Abstract

The utility model discloses a gantry machine tool accessory milling head replacing mechanism, and belongs to the technical field of automatic milling machines. Comprising an installation bottom plate which is fixed to a machine tool stand column. The right-angle milling head linear guide rail is transversely arranged on the front side of the mounting bottom plate; the right-angle milling head and a driving part of the right-angle milling head are positioned on the front side of the mounting bottom plate; one end of the second clamping plate is clamped on the linear guide rail in a sliding manner; the accessory head proximity switch is connected with the console and is used for detecting whether the right-angle milling head is positioned in the head library or not; the second air cylinder is fixedly connected with the mounting bottom plate; the second air cylinder is connected with the control table and used for driving the right-angle milling head and the placing support of the right-angle milling head to integrally move linearly along the right-angle milling head linear guide rail. The utility model provides a gantry machine tool accessory milling head replacing mechanism which can detect whether a milling head is in place or not and ensure that a machine tool carries a correct accessory milling head for machining operation.

Description

Technical Field

[0001] The utility model relates to the technical field of automated milling machines, and more specifically to a milling head replacement mechanism for a gantry machine tool accessory. Background Art

[0002] A gantry milling machine is a milling machine with a portal frame and a horizontal long bed. It consists of a portal frame, a bed workbench and an electrical control system. It has high processing accuracy and production efficiency and is suitable for processing flat and inclined surfaces of large workpieces in batch and mass production.

[0003] In existing milling machines, the accessory milling heads are mostly replaced manually, which is inefficient and affects production.

[0004] Some gantry milling machines also use automatic tool head replacement mechanisms. For example, CN219094458U discloses a tool replacement structure for a CNC gantry double-head milling machine, which includes a CNC gantry double-head milling machine, a milling tool provided on the CNC gantry double-head milling machine, and a support platform fixedly mounted on one side of the CNC gantry double-head milling machine. The patent uses a drive motor, a connecting turntable, a clamping plate, and other structures. When in use, the motor can be adjusted to control the opening and closing of the two clamping plates. After the two clamping plates are unfolded, the adjusting arm of the CNC gantry double-head milling machine drives the milling tool to move between the two clamping plates, which clamp the milling tool. At this time, the CNC gantry double-head milling machine is operated to release the milling tool. When the drive motor is started, the connecting turntable is rotated to move the replacement tool to the replacement slot. The adjusting arm of the CNC gantry double-head milling machine is connected to the replacement tool and the clamping plate that fixes the replacement tool is released. The automatic tool replacement operation is completed, eliminating the need for manual tool replacement and improving processing efficiency.

[0005] However, when the cutting tools of the above-mentioned gantry milling machine are automatically replaced, it is necessary to manually judge whether the cutter head has entered the head library. If it is not checked in time, it is easy to carry the wrong milling head into operation, affecting efficiency.

[0006] Based on this, we propose a gantry machine tool accessory milling head replacement mechanism, which sets a proximity switch in the head library to judge the status of the milling head in the head library and avoid errors in replacing the milling head. Utility Model Content

[0007] In order to overcome the technical problems in the above background, the utility model provides a gantry machine tool accessory milling head replacement mechanism.

[0008] In order to solve the above technical problems, the technical solutions of the present utility model are as follows:

[0009] A gantry machine tool accessory milling head replacement mechanism includes a mounting base plate fixed to a machine tool column;

[0010] A right-angle milling head linear guide rail, the right-angle milling head linear guide rail being laterally arranged on the front side of the mounting base plate;

[0011] A right-angle milling head and a mounting bracket thereof, wherein the right-angle milling head and a driving component thereof are located on the front side of the mounting base plate;

[0012] A second connecting plate and a second clamping plate, wherein the second connecting plate is fixedly arranged on the back side of the right-angle milling head and its mounting bracket; one end of the second clamping plate is slidably clamped on the linear guide rail, and the other end is fixedly connected to the back side of the second connecting plate;

[0013] An accessory head proximity switch is connected to the console, and the accessory head is fixed to one end of the mounting base plate facing the right-angle milling head, and is used to detect whether the right-angle milling head is in the head library;

[0014] The second cylinder is fixedly connected to the mounting base plate; the second cylinder is connected to the control console and is used to drive the right-angle milling head and its mounting bracket to move linearly along the right-angle milling head linear guide rail.

[0015] Preferably, two groups of the right-angle milling head linear guide rails and the second clamping plates are provided, and the two groups of the right-angle milling head linear guide rails and the second clamping plates are respectively located at the upper and lower ends of the back side of the second connecting plate.

[0016] Preferably, it also includes a head cover to prevent flying chips, and the head cover is located directly above the right-angle milling head.

[0017] Preferably, a hood linear guide is laterally provided on the front side of the mounting base, and the hood linear guide is located above the right-angle milling head linear guide; the hood is fixed to the mounting bracket through a hood positioning plate, and a first connecting plate is provided on the back of the mounting bracket, and a first clamping plate is provided on the back side of the first connecting plate, and the first clamping plate is slidably clamped on the hood linear guide; a first cylinder is also fixedly installed on the mounting base, and the first cylinder is connected to the console, and the first cylinder drives the hood and the mounting bracket as a whole to move linearly along the hood linear guide; a hood proximity switch is also provided on the end of the mounting base facing the hood, and the hood proximity switch is connected to the console for detecting whether the hood is in place.

[0018] Preferably, an accessory head positioning plate for fixing the right-angle milling head is provided on the placement bracket below the right-angle milling head.

[0019] Preferably, the right-angle milling head is provided with a plurality of positioning pin mounting holes, and positioning pins for fixing the workpiece are mounted inside the positioning pin mounting holes.

[0020] Preferably, a limit stop is fixedly provided on the side surface of the mounting base plate.

[0021] Preferably, the first cylinder and the second cylinder are both fixed to the mounting base through a cylinder mounting plate; the output end of the first cylinder is fixedly connected to the first clamping plate through a first cylinder connecting bracket; the output end of the second cylinder is fixedly connected to the second clamping plate through a second cylinder connecting bracket.

[0022] Preferably, a protective sliding door is provided on the side of the right-angle milling head and the mounting bracket thereof, and the protective sliding door is fixed to the front end of the mounting base plate by a hinge.

[0023] Preferably, it also includes a pneumatic component mounting plate and a wiring drag chain. The pneumatic component mounting plate is fixed to the front end of the mounting base plate and is used to place the junction box and the manifold; the wiring drag chain is set on the cylinder stroke route for wiring.

[0024] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0025] The utility model provides a gantry machine tool accessory milling head replacement mechanism, which has a compact structure and is convenient for automatically replacing the gantry machine tool accessory milling head, solving the following problems:

[0026] 1) Install the accessory head proximity switch at the head library position. By presetting the value on the console, after the milling head is replaced, the proximity switch can determine whether the corresponding milling head in the head library is in place, avoiding the situation of changing the wrong milling head during the automated processing, resulting in process errors, collision with the workpiece, etc.

[0027] 2) A head cover is installed above the head warehouse to prevent flying chips and protect structures on the machine such as guide rails. At the same time, a cylinder is used to push the head cover to facilitate replacement of the head cover. A head cover proximity switch is also set behind the head cover to detect whether the replaced head cover is in place to avoid incomplete covering.

[0028] 3) The protective sliding door can protect the machine, blocking flying chips from the side to avoid damage to the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a right side structural schematic diagram of the present utility model;

[0031] Figure 2 This is a front view structural diagram of the utility model;

[0032] Figure 3 This is a left-side structural schematic diagram of the present utility model;

[0033] Figure 4 This is a left-side structural diagram of the present invention after the head cover and right-angle milling head are removed and the base plate is installed;

[0034] Figure 5 This is a simplified diagram of the pneumatic principle of the utility model;

[0035] Figure 6 This is a schematic diagram of the top view of the head cover placement bracket and the protective sliding door position of the utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the cable drag chain from a top view in the present invention;

[0037] Figure 8 This is a schematic diagram of the top view of the right-angle milling head of the utility model;

[0038] Figure 9 This is a schematic diagram of the positioning pin structure of the present utility model.

[0039] Explanation of the marks in the figure: 1. Mounting base plate; 2. Linear guide for head cover; 3. Linear guide for right-angle milling head; 4. First clamping plate; 5. Second clamping plate; 6. First cylinder; 7. Second cylinder; 8. Connecting bracket for first cylinder; 9. Connecting bracket for second cylinder; 10. First connecting plate; 11. Second connecting plate; 12. Head cover; 13. Head cover placement bracket; 14. Right-angle milling head; 15. Head cover positioning plate; 16. Protective sliding door; 17. Pneumatic component mounting plate; 18. Head cover proximity switch; 19. Cylinder mounting plate; 20. Wiring drag chain; 21. Accessory head positioning plate; 22. Limit block; 23. Positioning pin mounting hole; 24. Accessory head proximity switch; 25. Positioning pin. DETAILED DESCRIPTION

[0040] In order to better understand the purpose, structure and function of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0041] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper", "lower", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in the embodiments are only for illustrating the technical solution and do not limit the scope of protection of the present invention. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] Unless otherwise expressly specified or limited, terms such as "installed," "installed," "connected," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] The mechanism of this application is part of a gantry milling machine, and involves an automatic milling head replacement mechanism, specifically the moving parts of the milling head replacement mechanism, rather than the entire gantry milling machine. This application will not be repeated here.

[0044] Example 1:

[0045] See also Figure 1-9 The utility model provides a technical solution: a gantry machine tool accessory milling head replacement mechanism, comprising a mounting base plate 1, the mounting base plate 1 is fixed on the machine tool column; a right-angle milling head linear guide 3, the right-angle milling head linear guide 3 is horizontally arranged on the front side of the mounting base plate 1; the right-angle milling head 14 and its placement bracket, the right-angle milling head 14 and its driving components are located on the front side of the mounting base plate 1; a second connecting plate 11 and a second clamping plate 5, the second connecting plate 11 is fixedly arranged on the back side of the right-angle milling head 14 and its placement bracket as a whole; one end of the second clamping plate 5 is slidably clamped on the linear guide 3, and the other end is fixedly connected to the back side of the second connecting plate 11; an accessory head proximity switch 24, the accessory head proximity switch 24 is connected to the console, and the accessory head is fixed to one end of the mounting base plate 1 facing the right-angle milling head 14, for detecting whether the right-angle milling head 14 is in the head library.

[0046] The second cylinder 7 is fixedly connected to the mounting base plate 1 ; the second cylinder 7 is connected to the control console, and is used to drive the right-angle milling head 14 and its mounting bracket to move linearly along the right-angle milling head linear guide 3 as a whole.

[0047] The connection between the accessory head proximity switch 24 and the console is electrical connection.

[0048] like Figure 1-3 As shown, the driving mechanism of the right-angle milling head 14 is located in the placement bracket below, and the driving mechanism is connected to the control console, which is a PLC control console. When the right-angle milling head 14 needs to be replaced, the second cylinder 7 is driven to work by the PLC control console. The output end of the second cylinder 7 is connected to the second clamping plate 5, which can drive the second connecting plate 11 to move linearly along the guide rail, and further bring the right-angle milling head 14 to the tool head replacement point for head replacement operation.

[0049] When the right-angle milling head 14 returns to its position, the accessory head proximity switch 24 can detect whether there is a milling head in the head library or whether the milling head is replaced correctly. When it is detected that there is no milling head in the head library or the milling head is replaced incorrectly, the signal is transmitted to the console, the console line disconnects the power supply of the machine tool, and the console reminds by connecting a buzzer or notifying manual inspection through other information transmission methods.

[0050] Enter the preset value in the console in advance, which is generally the preset value of the detection point. When the detection value is different from the predicted value, an error reminder will be displayed.

[0051] Furthermore, two groups of right-angle milling head linear guides 3 and second clamps 5 are provided, and the two groups of right-angle milling head linear guides 3 and second clamps 5 are respectively located at the upper and lower ends of the back side of the second connecting plate 11. Since the right-angle milling head 14 and the mounting bracket thereunder are relatively large in volume, by providing two groups of right-angle milling head linear guides 3 and second clamps 5, the overall movement is made more stable.

[0052] like Figure 1 As shown, since the mounting bracket is also loaded with a driving mechanism, each right-angle milling head linear guide 3 is equipped with a second cylinder 7 to provide a stable output force.

[0053] Further, such as Figure 8 As shown, an accessory head positioning plate 21 for fixing the right-angle milling head 14 is provided on the placement bracket below the right-angle milling head 14 .

[0054] Further, such as Figure 6 As shown, a protective sliding door 16 is provided on the side of the right-angle milling head 14 and its mounting bracket. The protective sliding door 16 is fixed to the front end of the mounting base 1 by a hinge. The protective sliding door 16 can provide shielding to prevent flying chips when the workpiece is being processed.

[0055] Further, such as Figure 8 As shown, it also includes a pneumatic component mounting plate 17 and a wiring drag chain 20. The pneumatic component mounting plate 17 is fixed to the front end of the mounting base plate 1 and is used to place the junction box and the manifold; the wiring drag chain 20 is set on the cylinder stroke route for wiring.

[0056] Further, such as Figure 8-9 As shown, a plurality of positioning pin mounting holes 23 are provided on the right-angle milling head 14 , and positioning pins 25 for fixing the workpiece are installed inside the positioning pin mounting holes 23 .

[0057] Example 2:

[0058] See also Figure 1 Based on Example 1, a gantry machine tool accessory milling head replacement mechanism also includes a head cover 12 to prevent flying chips. The head cover 12 is located directly above the right-angle milling head 14. The head cover 12 can avoid flying chips during processing and play a protective role. In some scenarios, the head cover 12 can also protect the guide rail.

[0059] Specifically, such as Figure 1 、 Figure 3 and Figure 6 As shown, a hood linear guide 2 is laterally arranged on the front side of the mounting base 1, and the hood linear guide 2 is located above the right-angle milling head linear guide 3; the hood 12 is fixed to the mounting bracket 13 through a hood positioning plate 15, and a first connecting plate 10 is arranged on the back of the mounting bracket 13, and a first clamping plate 4 is arranged on the back of the first connecting plate 10, and the first clamping plate 4 is slidably clamped on the hood linear guide 2; a first cylinder 6 is also fixedly installed on the mounting base 1, and the first cylinder 6 is connected to the console, and the first cylinder 6 drives the hood 12 and the mounting bracket 13 to move linearly along the hood linear guide 2 as a whole; a hood proximity switch 18 is also provided on the end of the mounting base 1 facing the hood 12, and the hood proximity switch 18 is connected to the console for detecting whether the hood 12 is in place. If it is not in place, the console line disconnects the machine tool power supply, and the console reminds by connecting a buzzer, or notifies manual inspection by other information transmission methods.

[0060] In some scenarios, the hood 12 also needs to be replaced according to different processing scenarios. In this embodiment, the hood 12 can be pushed by the first cylinder 6 to move to the replacement position on the hood linear guide 2 for replacement. At the same time, when the hood 12 is reset, the hood proximity switch 18 is also used to detect whether the hood 12 is in place to avoid incomplete covering.

[0061] Further, such as Figure 6 As shown, a limit stopper 22 is fixedly provided on the side of the mounting base 1. The limit stopper 22 can prevent the first clamping plate 4 and the second clamping plate 5 from directly rushing out of the guide rail when a fault occurs, thereby playing a blocking and protective role.

[0062] Further, such as Figure 3 As shown, the first cylinder 6 and the second cylinder 7 are both fixed to the mounting base 1 through the cylinder mounting plate 19; the output end of the first cylinder 6 is fixedly connected to the first clamping plate 4 through the first cylinder connecting bracket 8; the output end of the second cylinder 7 is fixedly connected to the second clamping plate 5 through the second cylinder connecting bracket 9.

[0063] Proximity switches in the prior art; the above can all adopt existing equipment in the field and are well known to those skilled in the art, and are not the main technical features of this application;

[0064] Working principle: The working principle of the gantry machine tool accessory milling head replacement mechanism of the present invention is to first place the workpiece on the workbench position, install the locating pin 25 into the locating pin mounting hole 23 to fix the workpiece, start the PLC console, and make the driving mechanism inside the right-angle milling head 14 mounting bracket work, so that the right-angle milling head 14 can mill the workpiece.

[0065] When the cutter head needs to be replaced, the first cylinder 6 and the second cylinder 7 are driven to work through the PLC console. The first cylinder 6 pushes the first clamping plate 4, further pushing the head cover 12 and the mounting bracket 13 to move linearly along the head cover linear guide 2 as a whole; at the same time, the second cylinder 7 pushes the second clamping plate 5, further pushing the right-angle milling head 14 and its mounting bracket to move linearly along the right-angle milling head linear guide 3 as a whole, specifically moving to the gantry milling machine tool and head cover replacement point for replacement.

[0066] After the replaced head cover 12 is reset by the first cylinder 6, the head cover proximity switch 18 detects whether the head cover 12 is reset; the accessory head proximity switch 24 detects whether the right-angle milling head 14 is accurately located in the head library. When the head cover 12 or the right-angle milling head 14 is accurately positioned, the control console line disconnects the power supply of the machine tool, and the control console notifies manual inspection by connecting a buzzer or other information transmission methods to avoid empty tool operation.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A gantry machine tool accessory milling head replacement mechanism, characterized by: It comprises a mounting base plate (1), wherein the mounting base plate (1) is fixed on a machine tool column; A right-angle milling head linear guide rail (3), wherein the right-angle milling head linear guide rail (3) is laterally arranged on the front side of the mounting base plate (1); A right-angle milling head (14) and a mounting bracket thereof, wherein the right-angle milling head (14) and a driving component thereof are located on the front side of the mounting base plate (1); A second connecting plate (11) and a second clamping plate (5), wherein the second connecting plate (11) is fixedly arranged on the back side of the right-angle milling head (14) and its mounting bracket as a whole; one end of the second clamping plate (5) is slidably clamped on the linear guide rail (3), and the other end is fixedly connected to the back side of the second connecting plate (11); An accessory head proximity switch (24), the accessory head proximity switch (24) is connected to the console, and the accessory head is fixed to one end of the mounting base (1) facing the right-angle milling head (14), and is used to detect whether the right-angle milling head (14) is located in the head library; A second cylinder (7), the second cylinder (7) is fixedly connected to the mounting base plate (1); the second cylinder (7) is connected to the control console and is used to drive the right-angle milling head (14) and its mounting bracket to move linearly along the right-angle milling head linear guide rail (3).

2. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: Two groups of the right-angle milling head linear guide rails (3) and the second clamping plate (5) are provided, and the two groups of the right-angle milling head linear guide rails (3) and the second clamping plate (5) are respectively located at the upper and lower ends of the back side of the second connecting plate (11).

3. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: The utility model also comprises a head cover (12) for preventing flying chips, and the head cover (12) is located just above the right-angle milling head (14).

4. The gantry machine tool accessory milling head replacement mechanism according to claim 3, characterized in that: A head cover linear guide rail (2) is laterally arranged on the front side of the mounting base plate (1), and the head cover linear guide rail (2) is located above the right-angle milling head linear guide rail (3); the head cover (12) is fixed to the mounting bracket (13) through a head cover positioning plate (15), and a first connecting plate (10) is arranged on the back of the mounting bracket (13), and a first clamping plate (4) is arranged on the back side of the first connecting plate (10), and the first clamping plate (4) is slidably clamped on the head cover linear guide rail (2); a first cylinder (6) is also fixedly installed on the mounting base plate (1), and the first cylinder (6) is connected to the control console, and the first cylinder (6) drives the head cover (12) and the mounting bracket (13) to move linearly along the head cover linear guide rail (2) as a whole; a head cover proximity switch (18) is also arranged on the end of the mounting base plate (1) facing the head cover (12), and the head cover proximity switch (18) is connected to the control console for detecting whether the head cover (12) is in place.

5. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: An accessory head positioning plate (21) for fixing the right-angle milling head (14) is provided on a placement bracket below the right-angle milling head (14).

6. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: The right-angle milling head (14) is provided with a plurality of positioning pin installation holes (23), and positioning pins (25) for fixing the workpiece are installed inside the positioning pin installation holes (23).

7. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: A limit stopper (22) is fixedly provided on the side surface of the mounting base plate (1).

8. The gantry machine tool accessory milling head replacement mechanism according to claim 4, characterized in that: The first cylinder (6) and the second cylinder (7) are both fixed to the mounting base plate (1) via a cylinder mounting plate (19); the output end of the first cylinder (6) is fixedly connected to the first clamping plate (4) via a first cylinder connecting bracket (8); and the output end of the second cylinder (7) is fixedly connected to the second clamping plate (5) via a second cylinder connecting bracket (9).

9. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: A protective sliding door (16) is provided on the side of the right-angle milling head (14) and its mounting bracket, and the protective sliding door (16) is fixed to the front end of the mounting base plate (1) through a hinge.

10. The gantry machine tool accessory milling head replacement mechanism according to claim 1, characterized in that: It also includes a pneumatic component mounting plate (17) and a wiring drag chain (20), wherein the pneumatic component mounting plate (17) is fixed to the front end of the mounting base plate (1) and is used to place a junction box and a busbar; the wiring drag chain (20) is arranged on the cylinder stroke route and is used for wiring.

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