A tool head switching device of a numerical control milling machine

Abstract

The utility model discloses a tool bit switching device of numerical control milling machine relates to numerical control milling machine equipment technical field, including switching mechanism and two symmetrical installation in switching mechanism bottom both ends's tool bit subassembly, switching mechanism includes assembly plate, single -phase motor and driven gear, in the utility model, the control system of numerical control milling machine can control single -phase motor positive and negative rotation through the reverse switch, when needing to switch tool bit, single -phase motor drives driving gear positive rotation to drive driven gear and rotary disc rotation, make switching rod one downward movement while switching rod two upward movement, the tool bit of switching rod one bottom tool bit subassembly is processed to work piece at this moment, through setting up switching mechanism, and cooperate the control system of numerical control milling machine and realize the automatic switching of tool bit up and down, need not operating personnel manual intervention, greatly simplifies the operation process, effectively improved the switching efficiency of tool bit, can satisfy the demand of large quantities, continuous production.

Description

Technical Field

[0001] This utility model relates to the field of CNC milling machine equipment technology, and in particular to a tool head switching device for a CNC milling machine. Background Technology

[0002] As the machinery manufacturing industry continues to demand higher precision and production efficiency in parts processing, the application scope of CNC milling machines is expanding, and the requirements for tool head switching devices are becoming increasingly stringent. Currently, most CNC milling machine tool head switching devices on the market still require manual switching.

[0003] For example, Chinese patent CN202223305232.7 discloses a CNC milling machine with quick tool change, including a support base, a collection table fixedly connected to the support base, a bed fixedly connected to the collection table, a snap-fit ​​device fixedly connected to the bed, the snap-fit ​​device including a sleeve, the sleeve fixedly connected to the bed, a fixed cylinder fixedly connected to the outside of the sleeve, and two first bearings snapped onto the fixed cylinder.

[0004] Currently, when it is necessary to replace the cutting head of a CNC milling machine, the operator needs to manually install the cutting head to be replaced onto the spindle and tighten it with tools such as wrenches. The operation process is cumbersome, which not only consumes a lot of manpower and time, but also makes it difficult to meet the needs of large-scale and continuous production, and seriously restricts the processing efficiency of CNC milling machines. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art and to propose a tool head switching device for a CNC milling machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tool head switching device for a CNC milling machine, comprising a switching mechanism and two tool head assemblies symmetrically installed at both ends of the bottom of the switching mechanism. The switching mechanism includes an assembly plate, a single-phase motor, and a driven gear. The output end of the single-phase motor is fixedly connected to a driving gear. The driven gear is rotatably installed on the top of the assembly plate, and a rotating disk is fixedly installed at one end of the driven gear. Two arc-shaped grooves are opened on the front side of the rotating disk. The two arc-shaped grooves encircle each other and are symmetrically distributed. Switching rod one and switching rod two are slidably installed in the two arc-shaped grooves respectively. The tool head assembly includes a sliding plate, a limiting plate, a mounting base, and a rotary motor. The bottoms of switching rod one and switching rod two are fixedly installed to the tops of the two sliding plates respectively. The limiting plate is fixedly installed on the assembly plate. The end of the sliding plate near the assembly plate is slidably connected to the limiting plate, and the end of the sliding plate away from the assembly plate is inserted into the mounting base. A tool head is provided at the bottom of the mounting base.

[0007] Preferably, the rotary motor is fixedly mounted on the assembly plate, and a telescopic rod is fixedly connected to the output end of the rotary motor.

[0008] Preferably, a rotating rod is rotatably mounted on the top of the mounting base, and the bottom of the rotating rod passes through the mounting base and is fixedly mounted to the cutter head.

[0009] Preferably, the bottom of the telescopic rod is inserted into the top of the rotating rod, and through holes are provided at both ends of the mounting base.

[0010] Preferably, the sliding plate has slots at both ends and insert rods at both ends, with the bottom end of the insert rods passing through the through holes and being inserted into the slots.

[0011] Preferably, the distances between the two ends of the arc-shaped groove and the center of the rotating disk are not equal, and the single-phase motor is fixedly mounted on the assembly plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the control system of the CNC milling machine can control the forward and reverse rotation of the single-phase motor through a forward and reverse switch. When it is necessary to switch the tool head, the single-phase motor drives the driving gear to rotate forward, thereby driving the driven gear and the rotary disk to rotate, causing the first switching rod to move downward while the second switching rod moves upward. At this time, the tool head of the tool head assembly at the bottom of the first switching rod processes the workpiece. When the single-phase motor drives the driving gear to rotate in the reverse direction, another tool head can be switched. By setting a switching mechanism and cooperating with the control system of the CNC milling machine, the automatic switching of the tool head is realized without the need for manual intervention by the operator, which greatly simplifies the operation process, effectively improves the switching efficiency of the tool head, and can meet the needs of mass production and continuous production.

[0013] 2. In this utility model, the mounting base is inserted into the sliding plate, and the bottom end of the insertion rod is inserted into the slot through the through hole to quickly fix the mounting base on the sliding plate. Finally, the bottom of the telescopic rod is inserted into the top of the rotating rod, which facilitates the rotation motor to drive the telescopic rod and the cutter head to rotate at high speed. With the above structure, when the two cutter heads do not fit and need to be replaced, simply move the telescopic rod upward, take out the insertion rod upward, and pull the mounting base outward. This makes it easy to install and remove the cutter head. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a tool head switching device for a CNC milling machine proposed in this utility model; Figure 2 This is a side view of the tool head switching device for a CNC milling machine proposed in this utility model; Figure 3 This is a schematic diagram of the cutter head assembly of a cutter head switching device for a CNC milling machine proposed in this utility model; Figure 4 This is a front sectional view of the cutter head assembly of a cutter head switching device for a CNC milling machine proposed in this utility model.

[0015] Legend: 1. Switching mechanism; 2. Cutter head assembly; 11. Assembly plate; 12. Rotary disk; 13. Single-phase motor; 14. Drive gear; 15. Driven gear; 16. Arc groove; 17. Switching rod one; 18. Switching rod two; 21. Sliding plate; 22. Limiting plate; 23. Mounting base; 24. Rotary motor; 25. Telescopic rod; 26. Rotating rod; 27. Cutter head; 28. Slot; 29. ​​Through hole; 210. Insert rod. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a tool head switching device for a CNC milling machine, including a switching mechanism 1 and two tool head assemblies 2 symmetrically installed at both ends of the bottom of the switching mechanism 1. The switching mechanism 1 includes an assembly plate 11, a single-phase motor 13, and a driven gear 15. The output end of the single-phase motor 13 is fixedly connected to a driving gear 14. The driven gear 15 is rotatably installed on the top of the assembly plate 11, and a rotating disk 12 is fixedly installed on one end of the driven gear 15. Two arc-shaped grooves 16 are opened on the front side of the rotating disk 12. The two arc-shaped grooves 16 encircle each other and are symmetrically arranged. The cloth has two arc-shaped grooves 16 in which switching rod 17 and switching rod 28 are slidably installed respectively. The cutter head assembly 2 includes a sliding plate 21, a limiting plate 22, a mounting base 23 and a rotary motor 24. The bottoms of switching rod 17 and switching rod 28 are fixedly installed to the tops of the two sliding plates 21 respectively. The limiting plate 22 is fixedly installed on the assembly plate 11. The end of the sliding plate 21 near the assembly plate 11 is slidably connected to the limiting plate 22, and the end of the sliding plate 21 away from the assembly plate 11 is inserted into the mounting base 23. The bottom of the mounting base 23 is provided with a cutter head 27.

[0019] The specific settings and functions of this embodiment are described below: The control system of the CNC milling machine can control the forward and reverse rotation of the single-phase motor 13 through a forward / reverse switch, such as... Figure 4As shown, two arc-shaped grooves 16 are formed on the front side of the rotary disk 12. The two arc-shaped grooves 16 are mutually encircling and symmetrically distributed. Switching rod one 17 and switching rod two 18 are slidably installed in the two arc-shaped grooves 16 respectively. The bottom end of switching rod two 18 is lower than the bottom end of switching rod one 17. At this time, the cutting head 27 of the cutting head assembly 2 at the bottom end of switching rod two 18 processes the workpiece. When it is necessary to switch the cutting head 27, the single-phase motor 13 drives the driving gear 14 to rotate in the forward direction, thereby driving the driven gear 15 and the rotary disk 12 to rotate (e.g., Figure 4 As shown, the rotary disk 12 rotates counterclockwise, causing the switching lever 17 to move downwards while the switching lever 28 moves upwards. At this time, the bottom end of the switching lever 17 is lower than the bottom end of the switching lever 28. At this time, the cutting head 27 of the cutting head assembly 2 at the bottom of the switching lever 17 processes the workpiece. Similarly, when the single-phase motor 13 drives the drive gear 14 to rotate in the opposite direction, the other cutting head 27 can be switched. By setting the switching mechanism 1 and cooperating with the control system of the CNC milling machine, the automatic switching of the cutting head 27 is realized without the need for manual intervention by the operator, which greatly simplifies the operation process and effectively improves the switching efficiency of the cutting head 27, and can meet the needs of mass production and continuous production.

[0020] Example 2: Figure 1 , Figure 3 and Figure 4 As shown, the rotary motor 24 is fixedly mounted on the assembly plate 11. The output end of the rotary motor 24 is fixedly connected to the telescopic rod 25. The top of the mounting base 23 is rotatably mounted with a rotating rod 26, and the bottom of the rotating rod 26 passes through the mounting base 23 and is fixedly mounted with the cutter head 27. The bottom of the telescopic rod 25 is inserted into the top of the rotating rod 26. The two ends of the mounting base 23 are provided with through holes 29. The two ends of the sliding plate 21 are provided with slots 28, and the two ends of the sliding plate 21 are provided with insert rods 210. The bottom end of the insert rod 210 passes through the through hole 29 and is inserted into the slot 28. The two ends of the arc groove 16 are not equidistant from the center of the rotating disk 12. The single-phase motor 13 is fixedly mounted on the assembly plate 11. With the above structure, when the two cutter heads 27 on the two cutter head assemblies 2 of the device are not compatible and need to be replaced, it is only necessary to move the telescopic rod 25 upward, then take out the insert rod 210 upward, and pull the mounting base 23 outward, which can facilitate the installation and removal of the cutter head 27.

[0021] The overall effect of this embodiment is that, when the device is in use, the switching mechanism 1 is connected to the CNC milling machine through the assembly plate 11. The CNC milling machine can drive the switching mechanism 1 and the tool head assembly 2 to move their positions, thereby processing the workpiece. The two tool heads 27 are respectively installed at the bottom of the rotating rod 26. First, the mounting base 23 is inserted into the front side of the sliding plate 21. At this time, after the through hole 29 is aligned with the slot 28, the insertion rod 210 is inserted into the through hole 29 from top to bottom until the bottom end of the insertion rod 210 passes through the through hole 29 and is inserted into the slot 28. The mounting base 23 can be quickly fixed on the sliding plate 21 through the insertion rod 210. After the mounting base 23 is fixed to the sliding plate 21, the rotating rod 26 is rotated so that the top groove of the rotating rod 26 is aligned with the bottom insertion block of the telescopic rod 25. Then, the bottom of the telescopic rod 25 is inserted into the top of the rotating rod 26. At this time, the rotary motor 24 can drive the telescopic rod 25, the rotating rod 26 and the tool head 27 to rotate at high speed, thereby facilitating the CNC machining of the workpiece by the tool head assembly 2.

[0022] The method of use and working principle of this device: The switching mechanism 1 is connected to the CNC milling machine through the assembly plate 11. The CNC milling machine can drive the switching mechanism 1 and the cutter head assembly 2 to move their positions, thereby processing the workpiece. First, the mounting base 23 is inserted into the front side of the sliding plate 21. The bottom end of the insertion rod 210 is inserted through the through hole 29 and into the slot 28, quickly fixing the mounting base 23 on the sliding plate 21. The bottom of the telescopic rod 25 is inserted into the top of the rotating rod 26. At this time, the rotary motor 24 can drive the telescopic rod 25 and the cutter head 27 to rotate at high speed, which facilitates the CNC machining of the workpiece by the cutter head assembly 2. The control system of the CNC milling machine can control the forward and reverse rotation of the single-phase motor 13 via a forward / reverse switch, such as... Figure 4 As shown, the bottom end of switching lever 2 18 is lower than the bottom end of switching lever 1 17. At this time, the cutting head 27 of the cutting head assembly 2 at the bottom end of switching lever 2 18 processes the workpiece. When it is necessary to switch the cutting head 27, the single-phase motor 13 drives the driving gear 14 to rotate in the forward direction, thereby driving the driven gear 15 and the rotary disk 12 to rotate. This causes switching lever 1 17 to move downward while switching lever 2 18 moves upward. At this time, the bottom end of switching lever 17 is lower than the bottom end of switching lever 2 18. At this time, the cutting head 27 of the cutting head assembly 2 at the bottom end of switching lever 17 processes the workpiece. By setting the switching mechanism 1 and cooperating with the control system of the CNC milling machine, the automatic up-and-down switching of the cutting head 27 is realized, which effectively improves the switching efficiency of the cutting head 27.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A tool head switching device for a CNC milling machine, characterized in that: The device includes a switching mechanism (1) and two symmetrically mounted cutter head assemblies (2) at the bottom ends of the switching mechanism (1). The switching mechanism (1) includes an assembly plate (11), a single-phase motor (13), and a driven gear (15). The output end of the single-phase motor (13) is fixedly connected to a driving gear (14). The driven gear (15) is rotatably mounted on the top of the assembly plate (11), and a rotating disk (12) is fixedly mounted on one end of the driven gear (15). Two arc-shaped grooves (16) are opened on the front side of the rotating disk (12). The two arc-shaped grooves (16) encircle each other and are symmetrically distributed. The two arc-shaped grooves (16) are slidably installed in the two arc-shaped grooves (16). There are two switching levers (17 and 18). The cutter head assembly (2) includes a sliding plate (21), a limiting plate (22), a mounting base (23) and a rotary motor (24). The bottoms of the two switching levers (17 and 18) are fixedly installed on the tops of the two sliding plates (21) respectively. The limiting plate (22) is fixedly installed on the assembly plate (11). The end of the sliding plate (21) close to the assembly plate (11) is slidably connected to the limiting plate (22), and the end of the sliding plate (21) away from the assembly plate (11) is inserted into the mounting base (23). The bottom of the mounting base (23) is provided with a cutter head (27).

2. The tool head switching device for a CNC milling machine according to claim 1, characterized in that: The rotary motor (24) is fixedly mounted on the assembly plate (11), and the output end of the rotary motor (24) is fixedly connected to a telescopic rod (25).

3. The tool head switching device for a CNC milling machine according to claim 2, characterized in that: A rotating rod (26) is rotatably mounted on the top of the mounting base (23), and the bottom of the rotating rod (26) passes through the mounting base (23) and is fixedly mounted to the cutter head (27).

4. The tool head switching device for a CNC milling machine according to claim 3, characterized in that: The bottom of the telescopic rod (25) is inserted into the top of the rotating rod (26), and through holes (29) are provided at both ends of the mounting base (23).

5. The tool head switching device for a CNC milling machine according to claim 4, characterized in that: The sliding plate (21) has slots (28) at both ends, and the sliding plate (21) has insert rods (210) at both ends. The bottom end of the insert rods (210) passes through the through hole (29) and is inserted into the slots (28).

6. The tool head switching device for a CNC milling machine according to claim 1, characterized in that: The distance between the two ends of the arc groove (16) and the center of the rotating disk (12) is not equal, and the single-phase motor (13) is fixedly installed on the assembly plate (11).

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