Tool changing mechanism of numerical control milling machine

Abstract

The utility model relates to the technical field of numerical control milling machine equipment, in particular to a numerical control milling machine tool changing mechanism which comprises a milling machine body and a plurality of tool supports, a machining head is installed on the milling machine body, the end of the machining head is fixedly connected with two supporting side plates, the two supporting side plates are rotationally connected with a rotating shaft, and the rotating shaft is fixedly connected with the milling machine body. A mounting block is fixedly connected to the middle of the rotating shaft, and quick disassembly and assembly assemblies are arranged on the side walls of the multiple cutter supports. The quick dismounting and mounting assembly comprises a limiting sliding groove formed in the side wall of the cutter support. The two L-shaped mounting pins can be automatically clamped into the T-shaped mounting grooves, so that the tool can be quickly disassembled and assembled, the tool replacement operation efficiency is improved, the linear degree of tool rotation switching can be improved, an alarm can be triggered to give an alarm during tool replacement, a worker can be reminded of the current tool switching condition in time, and the working efficiency is improved. And the precision degree of cutter switching is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control milling machine equipment technical field, concretely relates to a numerical control milling machine tool changing mechanism. BACKGROUND

[0002] Numerical control milling machine is the automatic processing equipment that utilizes computer to control, can realize accurate milling processing to workpiece, and numerical control milling machine is widely used in mechanical manufacturing, automobile manufacturing and many other fields because of its high precision, high efficiency and high reliability etc.

[0003] The prior art still has the following problems when using:

[0004] The conversion operation precision of the numerical control milling machine tool changing mechanism is not accurate enough in the specific tool changing process, so that the tool is prone to error after switching, which affects the machining quality of the workpiece by the numerical control milling machine, and the types of tools used in the numerical control milling machine are various, and the inventory of the tool magazine is limited, so the tools of the tool magazine may need to be replaced, and the disassembly and assembly operation of the tools is often cumbersome, so that the replacement operation of the tools is relatively inconvenient. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of the prior art, the utility model provides a numerical control milling machine tool changing mechanism, which can effectively solve the problems that the tool switching in the numerical control milling machine is prone to error, which affects the machining quality of the workpiece by the numerical control milling machine, and the disassembly and assembly operation of the tools is cumbersome, so that the replacement operation of the tools is relatively inconvenient.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme:

[0007] The utility model provides a numerical control milling machine tool changing mechanism, which comprises a milling machine body and a plurality of tool supports, a machining head is installed on the milling machine body, two supporting side plates are fixedly connected at the end of the machining head, a rotating shaft is rotatably connected on the two supporting side plates, an installation block is fixedly connected in the middle of the rotating shaft, and a quick disassembly and assembly component is formed on the side wall of each tool support.

[0008] The quick disassembly and assembly component comprises a limiting sliding groove formed on the side wall of the tool support, two sliding blocks are slidably connected in the limiting sliding groove, a compression spring is fixedly connected between the two sliding blocks, L-shaped installation pins are fixedly connected on the outer walls of the two sliding blocks, a T-shaped installation groove is formed on the outer wall of the installation block, and the L-shaped installation pins are matched with the T-shaped installation groove.

[0009] The outer wall of the rotating shaft is fixedly connected with two precision switching components.

[0010] Further, the cutter support is fixedly connected with a high-speed motor, and the output end of the high-speed motor is fixedly connected with a cutter.

[0011] Further, the precision switching assembly comprises a first gear fixedly connected to the outer wall of the rotating shaft, a rotating motor fixedly connected to the outer wall of the supporting side plate, a second gear fixedly connected to the output end of the rotating motor and penetrating through the supporting side plate, and the second gear is in mesh with the first gear.

[0012] Further, the precision switching assembly further comprises a small spring rod fixedly connected to the bottom of the supporting side plate, a contact groove is formed in the axial side wall of the first gear, an electric contact piece is fixedly connected to the inner bottom surface of the contact groove and the output end of the small spring rod, an alarm is fixedly connected to the outer wall of the machining head, and the alarm is electrically connected to the two electric contact pieces.

[0013] Further, the size of the first gear is greater than that of the second gear, and the first gear and the second gear are made of high-hardness polyester plastic material.

[0014] Further, the outer wall of the sliding block is fixedly connected with a dismounting push rod frame.

[0015] Compared with the prior art, the technical scheme has the following beneficial effects:

[0016] In the utility model, the cutter support is installed through the clamping cooperation of the two L-shaped mounting pins and the T-shaped mounting groove, and the two sliding blocks are pushed by the compression spring, so that the two L-shaped mounting pins can be automatically clamped into the T-shaped mounting groove, the cutter can be quickly dismounted and mounted, and the replacement operation efficiency of the cutter is improved.

[0017] In the utility model, the precision switching assembly is arranged, the first gear with a larger size is driven to rotate through the driving of the second gear, the linear degree of the cutter rotation switching is improved, the alarm can be triggered to give an early warning during the cutter rotation switching, the switching condition of the current cutter is timely reminded to the staff, and the precision degree of the cutter switching is beneficially ensured. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0019] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0020] Figure 2 It is the schematic view of the structure of the processing head part in the utility model;

[0021] Figure 3 It is the sectional view of the structure of the mounting block and the tool support part in the utility model;

[0022] Figure 4 It is the schematic view of the structure of the precise switching assembly part in the utility model;

[0023] The figure mark: 1, milling machine body; 2, tool support; 3, processing head; 4, support side plate; 5, mounting block; 6, limit sliding groove; 7, sliding block; 8, compression spring; 9, T-shaped installation slot; 10, primary gear; 11, rotary motor; 12, secondary gear; 13, small spring rod; 14, contact groove; 15, electric contact piece; 16, alarm; 17, dismounting push rod frame; 18, L-shaped mounting pin. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor fall within the scope of the utility model.

[0025] The utility model will be further described below in conjunction with embodiments.

[0026] Embodiment: refer to Figures 1 to 4 A numerical control milling machine tool changing mechanism, including milling machine body 1 and a plurality of tool supports 2, the high-speed motor is fixedly connected on tool support 2, the high-speed motor output end is fixedly connected with tool, milling machine body 1 is installed with processing head 3, and the end of processing head 3 is fixedly connected with two support side plates 4, and the rotating shaft is rotatably connected on two support side plates 4, and the rotating shaft middle part is fixedly connected with mounting block 5, and the side wall of a plurality of tool supports 2 is all provided with quick dismounting assembly;Quick dismounting assembly includes the limit sliding groove 6 that is set up in the side wall of tool support 2, and two sliding blocks 7 are slidably connected in limit sliding groove 6, and the compression spring 8 is fixedly connected between two sliding blocks 7, and the outer wall of two sliding blocks 7 is all fixedly connected with L-shaped mounting pin 18, and the outer wall of mounting block 5 is provided with T-shaped installation slot 9, and L-shaped mounting pin 18 is matched with T-shaped installation slot 9, and the outer wall of sliding block 7 is fixedly connected with dismounting push rod frame 17;

[0027] By pressing the disassembly push rod frame 17 to push the two sliders 7 to move close, the compression spring 8 is gradually in compression and accumulates elastic potential energy, the L-shaped mounting pin 18 is correspondingly connected into the T-shaped mounting groove 9 on the mounting block 5, then the disassembly push rod frame 17 is released, the elastic potential energy of the compression spring 8 is released to push the two sliders 7 to move away, and then the two L-shaped mounting pins 18 are driven to move outward, so that the two L-shaped mounting pins 18 can be automatically connected with the T-shaped mounting groove, thereby the tool can be quickly disassembled and assembled, and the tool replacement operation efficiency is improved.

[0028] Referring to Figure 1 , Figure 2 and Figure 4 , the outer wall of the rotating shaft is fixedly connected with two precision switching assemblies, the precision switching assembly comprises a first gear 10 fixedly connected to the outer wall of the rotating shaft, the outer wall of the support side plate 4 is fixedly connected with a rotary motor 11, the output end of the rotary motor 11 penetrates through the support side plate 4 and is fixedly connected with a second gear 12, the second gear 12 is engaged with the first gear 10, the size of the first gear 10 is greater than that of the second gear 12, and the first gear 10 and the second gear 12 are both made of high-hardness polyester plastic material, the precision switching assembly further comprises a small spring rod 13 fixedly connected to the bottom of the support side plate 4, a contact groove 14 is formed in the axial side wall of the first gear 10, the inner bottom surface of the contact groove 14 and the output end of the small spring rod 13 are both fixedly connected with an electric contact piece 15, and the outer wall of the machining head 3 is fixedly connected with an alarm 16; the alarm 16 is electrically connected with the two electric contact pieces 15.

[0029] The second gear 12 is driven to rotate by the rotary motor 11, and the rotating shaft and the mounting block 5 are driven to rotate by a certain angle through the meshing transmission of the second gear 12 and the first gear 10, since the size of the second gear 12 is smaller than that of the first gear 10, that is, the number of teeth of the second gear 12 is less than that of the first gear 10, so that the linear degree of tool rotation switching can be effectively improved, and during the tool rotation switching, when the first gear 10 rotates by 90 degrees, 180 degrees or 270 degrees, the output end of the small spring rod 13 can be inserted into the contact groove 14, the two electric contact pieces 15 start to contact and make the alarm 16 start to be connected and started, and the pre-alarm of the alarm 16 can be triggered in time to remind the worker of the current tool switching, which is beneficial to ensure the precision of tool switching.

[0030] The working principle of the utility model is as follows:

[0031] 1、The tool is replaced, installed and used, first by pressing the dismounting push rod frame 17 to push the two sliding blocks 7 to move close, at this time the compression spring 8 is gradually in the compressed state and accumulates elastic potential energy, the L-shaped mounting pin 18 is correspondingly inserted into the T-shaped mounting slot 9 on the mounting block 5, then the dismounting push rod frame 17 is released, the elastic potential energy of the compression spring 8 is released to push the two sliding blocks 7 to move away, and then drive the two L-shaped mounting pins 18 to move outward, so that the two L-shaped mounting pins 18 can be automatically connected with the T-shaped mounting slot, so that the tool can be quickly disassembled and assembled, and the tool replacement operation efficiency is improved;

[0032] 2、In the process of changing the tool, the rotating motor 11 can be controlled to start, the second gear 12 is driven to rotate by the rotating motor 11, the rotating shaft and the mounting block 5 are driven to rotate by a certain angle by the meshing transmission of the second gear 12 and the first gear 10, because the size of the second gear 12 is smaller than that of the first gear 10, that is, the number of teeth of the second gear 12 is less than that of the first gear 10, so that the linear degree of tool rotation switching can be effectively improved, and at the same time in the process of tool rotation switching, that is, when the first gear 10 rotates 90 degrees, 180 degrees or 270 degrees, the output end of the small spring rod 13 can be inserted into the contact slot 14, the two electric contact pieces 15 start to contact and make the alarm 16 start to contact and start, and then the pre-alarm of the alarm 16 can be triggered to timely remind the worker of the current tool switching, which is beneficial to ensure the precision of tool switching.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A tool changing mechanism for a CNC milling machine, characterized in that, include: The milling machine body (1) and several tool supports (2) are provided. A machining head (3) is installed on the milling machine body (1). Two support side plates (4) are fixedly connected to the end of the machining head (3). A rotating shaft is rotatably connected to the two support side plates (4). An installation block (5) is fixedly connected to the middle of the rotating shaft. A quick disassembly assembly is provided on the side wall of several tool supports (2). The quick-release assembly includes a limiting sliding groove (6) opened on the side wall of the tool support (2), two sliders (7) are slidably connected in the limiting sliding groove (6), a compression spring (8) is fixedly connected between the two sliders (7), and an L-shaped mounting pin (18) is fixedly connected to the outer wall of each of the two sliders (7). A T-shaped mounting groove (9) is opened on the outer wall of the mounting block (5), and the L-shaped mounting pin (18) matches the T-shaped mounting groove (9). Two precision switching components are fixedly connected to the outer wall of the shaft.

2. The tool changing mechanism for a CNC milling machine according to claim 1, characterized in that, A high-speed motor is fixedly connected to the tool support (2), and a tool is fixedly connected to the output end of the high-speed motor.

3. The tool changing mechanism for a CNC milling machine according to claim 1, characterized in that, The precision switching component includes a first gear (10) fixedly connected to the outer wall of the rotating shaft, a rotary motor (11) fixedly connected to the outer wall of the support side plate (4), the output end of the rotary motor (11) passes through the support side plate (4) and is fixedly connected to a second gear (12), and the second gear (12) meshes with the first gear (10).

4. A tool changing mechanism for a CNC milling machine according to claim 3, characterized in that, The precision switching assembly also includes a small spring rod (13) fixedly connected to the bottom of the support side plate (4). The first gear (10) has a contact groove (14) on its axial side wall. The bottom surface of the contact groove (14) and the output end of the small spring rod (13) are both fixedly connected to a contact piece (15). An alarm (16) is fixedly connected to the outer wall of the processing head (3). The alarm (16) and the two contact pieces (15) are electrically connected.

5. A tool changing mechanism for a CNC milling machine according to claim 4, characterized in that, The size of the first gear (10) is larger than that of the second gear (12), and both the first gear (10) and the second gear (12) are made of high-hardness polyester plastic.

6. A tool changing mechanism for a CNC milling machine according to claim 1, characterized in that, The outer wall of the slider (7) is fixedly connected to a detachable push rod frame (17).

Images