Numerically-controlled machine tool with tool bit convenient to replace

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool with a tool bit convenient to replace, which comprises the tool bit, a cross frame is fixedly mounted at the top of the tool bit, a cross box is inserted into the top of the cross frame, and a notch cylinder is mounted in the middle of the top of a box cover. The top of the notched cylinder is connected with the bottom of a driving shaft of the numerical control machine tool, a screw rod is rotatably mounted on the inner wall of the bottom of the cross box, a screw block is slidably mounted on the outer side wall of the screw rod through threads, and the periphery of the screw block is hinged to the top of the connecting rod. The cross-shaped frame is installed on the top of the tool bit, after the cross-shaped frame and the cross-shaped groove are connected in an inserted mode, the inserting plate and the inserting groove are automatically aligned, adjustment is not needed, the screw rod can be directly rotated, the screw block is made to descend, the connecting rod drives the inserting plate to stretch out, the inserting plate is inserted into the through groove, the cross-shaped frame and the cross-shaped box can be fixed, and installation of the tool bit can be completed. Only the screw needs to be rotated, so that the disassembly is quicker.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a CNC machine tool that facilitates the replacement of tool heads. Background Technology

[0002] CNC machine tools are short for numerical control machine tools. They are automated machine tools equipped with a program control system. The cutting head of a CNC machine tool is usually fixed with several locking screws, which requires a special wrench to operate, making it inconvenient to disassemble and assemble.

[0003] Chinese Utility Model Announcement No. CN215824822U includes: a cutting machine drive assembly, which is installed on the top of the CNC machine tool frame; a support block, which is cylindrical and inserted into the bottom of the mounting block; and a connecting rod, which is I-shaped and threaded into the interior of the mounting block, with the connecting rod located on both the left and right sides inside the mounting block. The bottom of the cutting machine drive assembly is fixedly connected to the mounting block, which has an internal groove, and the top of the mounting block is fixedly connected to a rectangular limiting block. The outer surface of the limiting block is tightly fitted to the top of the support block, and the support block has a first limiting groove formed at equal angles inside. This CNC cutting machine features a replaceable cutting head, which not only allows for quick and simple cutting head replacement without affecting processing efficiency, but also provides strong cutting head fixation, preventing the cutting head from easily falling off.

[0004] The applicant discovered some shortcomings in the use of the patent: after the support block is inserted into the mounting block, the support block needs to be rotated to adjust its position so that the second limiting groove and the fixing rod are aligned before the connecting rod can be turned. Moreover, the two connecting rods on both sides need to be turned separately, which is not fast enough.

[0005] Therefore, this utility model designs a CNC machine tool with a convenient tool head replacement to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a CNC machine tool with a convenient tool head replacement function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a CNC machine tool for easy replacement of tool heads, comprising: a tool head, a cross frame fixedly mounted on the top of the tool head, a cross box inserted into the top of the cross frame, a box cover mounted on the top of the cross box, a notched cylinder mounted in the middle of the top of the box cover, the top of the notched cylinder connected to the bottom of the CNC machine tool drive shaft, a screw rotatably mounted on the bottom inner wall of the cross box, a screw block slidably mounted on the outer wall of the screw via a thread, the screw block being hinged to the top of a connecting rod around its perimeter, an insert plate hinged to the bottom of the connecting rod, a through groove slidably connected to the insert plate on the side wall of the cross box, and a slot for inserting the insert plate into the inner wall of the cross frame. After the cross frame and the cross box are inserted together, the insert plate and the slot automatically align, eliminating the need for further position adjustment, making it more convenient. Moreover, by rotating the screw, four insert plates can be simultaneously inserted into the slots to fix the cross frame and the cross box, making it even faster.

[0008] Preferably, the top of the screw passes through the notched cylinder and is equipped with a knob, which allows the operator to easily rotate the screw.

[0009] Preferably, a rubber sealing block is inserted into one end of the notched cylinder, which seals the notched cylinder and reduces the entry of debris or dust impurities generated during processing.

[0010] Preferably, the rubber sealing block and the notched cylinder are connected by an elastic rope, which makes it less likely for the rubber sealing block to be lost.

[0011] Preferably, the four corners between the box cover and the cross box are fixed by several bolts, which makes it convenient to inspect and maintain the parts inside the cross box.

[0012] Preferably, the outer wall of the knob is provided with a cotton layer, which is a sponge, to improve the comfort of the operator when turning the knob.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model installs a cross frame on the top of the cutter head. After the cross frame and cross slot are connected, the insert plate and slot automatically align without further adjustment. The screw can be directly rotated to lower the screw block, and the insert plate is extended through the connecting rod and inserted into the through slot, thus fixing the cross frame and cross box and completing the installation of the cutter head. Only the screw needs to be rotated, making assembly and disassembly faster. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the cross-shaped box structure of this utility model;

[0017] Figure 3 This is a cross-sectional schematic diagram of the cross-shaped box structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-shaped frame structure of this utility model.

[0019] In the diagram: 1. Cutting head; 2. Cross frame; 3. Cross box; 4. Box cover; 5. Notched cylinder; 6. CNC machine tool drive shaft; 7. Screw; 8. Screw block; 9. Connecting rod; 10. Insert plate; 11. Through slot; 12. Slot; 13. Knob; 14. Rubber sealing block; 15. Elastic rope. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides an embodiment of a CNC machine tool that facilitates the replacement of tool heads, comprising: a tool head 1, a cross frame 2 fixedly mounted on the top of the tool head 1, a cross box 3 inserted into the top of the cross frame 2, a box cover 4 mounted on the top of the cross box 3, a notched cylinder 5 installed in the middle of the top of the box cover 4, the top of the notched cylinder 5 being connected to the bottom of the CNC machine tool drive shaft 6, a screw 7 rotatably mounted on the bottom inner wall of the cross box 3, a screw block 8 slidably mounted on the outer wall of the screw 7 via a thread, the four sides of the screw block 8 being hinged to the top of the connecting rod 9, an insert plate 10 hinged to the bottom of the connecting rod 9, a through groove 11 slidably connected to the insert plate 10 on the side wall of the cross box 3, and a slot 12 inserted into the insert plate 10 on the inner wall of the cross frame 2. During disassembly, the screw is turned to raise the screw block, and the insert plate is slid out of the slot and into the through groove via the connecting rod, thus removing the fixation of the cross frame and the cross box.

[0022] Please see Figure 1-3 In this embodiment: the top of the screw 7 passes through the notched cylinder 5 and is fitted with a knob 13.

[0023] Please see Figure 1-3 In this embodiment: a rubber sealing block 14 is inserted into one end of the notched cylinder 5.

[0024] Please see Figure 1-3 In this embodiment: the rubber sealing block 14 and the notched cylinder 5 are connected by an elastic rope 15.

[0025] Please see Figure 1-3 In this embodiment: the four corners between the box cover 4 and the cross box 3 are all fixed and installed by several bolts.

[0026] Please see Figure 1-3 In this embodiment: the outer wall of the knob 13 is provided with a cotton layer.

[0027] Working principle: When replacing different models of cutter head 1, the operator can pull out the rubber sealing block 14 from one end of the notched cylinder 5, then insert their finger into the notched cylinder 5 and turn the knob 13. The knob 13 drives the screw 7 to rotate, causing the screw block 8 to rise. Through the connecting rod 9, the insert plate 10 is driven away from the slot 12 and into the through groove 11, thus removing the fixation of the cross frame 2 and the cross box 3. Then, the cutter head 1 and the cross frame 2 can be pulled out downwards for replacement. During installation, the cross frame 2 and the cross box 3 at the top of the cutter head 1 are inserted together. Then, the knob 13 is turned in the opposite direction, causing the screw 7 to rotate in the opposite direction. Through the connecting rod 9, the insert plate 10 is driven to slide outwards and is inserted into the slot 12, thus completing the fixation of the cross frame 2 and the cross box 3 and completing the installation of the cutter head 1. The contents not described in detail in this instruction belong to the prior art known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC machine tool with easily replaceable tool heads, comprising: The cutting head (1) is characterized in that: a cross frame (2) is fixedly installed on the top of the cutting head (1), a cross box (3) is inserted into the top of the cross frame (2), a box cover (4) is installed on the top of the cross box (3), a notched cylinder (5) is installed in the middle of the top of the box cover (4), the top of the notched cylinder (5) is connected to the bottom of the CNC machine tool drive shaft (6), a screw (7) is rotatably installed on the bottom inner wall of the cross box (3), a screw block (8) is slidably installed on the outer wall of the screw (7) through the thread, the four sides of the screw block (8) are hinged to the top of the connecting rod (9), a plug plate (10) is hinged to the bottom of the connecting rod (9), a through groove (11) is opened on the side wall of the cross box (3) and slidably connected to the plug plate (10), and a slot (12) is opened on the inner wall of the cross frame (2) and inserted into the plug plate (10).

2. The CNC machine tool with convenient tool head replacement according to claim 1, characterized in that: The top of the screw (7) passes through the notched cylinder (5) and is fitted with a knob (13).

3. A CNC machine tool with a convenient tool head replacement according to claim 1, characterized in that: A rubber sealing block (14) is inserted into one end of the notched cylinder (5).

4. A CNC machine tool with a convenient tool head replacement according to claim 3, characterized in that: The rubber sealing block (14) and the notched cylinder (5) are connected by an elastic rope (15).

5. A CNC machine tool with a convenient tool head replacement according to claim 1, characterized in that: The four corners between the box cover (4) and the cross box (3) are all fixed by several bolts.

6. A CNC machine tool with a convenient tool head replacement according to claim 2, characterized in that: The outer wall of the knob (13) is provided with a cotton layer.

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