An automatic tool replacement engraving and milling machine

Abstract

The application provides a precision carving machine with replaceable cutter automatically, and belongs to the technical field of precision carving machines, which comprises a rotating rod, an elastic extrusion assembly, a cutter, a driving assembly, a semicircular bottom cylinder and a limiting assembly, the rotating rod is hollow, two groups of semicircular bottom cylinders are arranged, the two groups of semicircular bottom cylinders are oppositely arranged at the bottom of the rotating rod and are hingedly connected with the rotating rod, the cutter is provided with a plurality of groups, one end of one group of the cutter is arranged to extend from the bottom of the two groups of semicircular bottom cylinders, and the remaining plurality of cutters are arranged in the rotating rod and are sequentially arranged along the length direction of the rotating rod, and the elastic extrusion assembly is arranged at the top of the inner side of the rotating rod and is used for providing elastic thrust to the plurality of cutters. Compared with the prior art, the embodiment of the application does not need manual replacement of the cutter, can automatically replace the worn or damaged cutter, saves the cutter replacement time and improves the replacement efficiency of the cutter.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of engraving and milling machines, and particularly relates to an engraving and milling machine capable of automatically replacing a tool. BACKGROUND

[0002] An engraving and milling machine is a kind of numerical control machine tool, which can be used for engraving and milling and is a high-efficiency and high-precision numerical control machine tool.

[0003] The existing engraving and milling machine controls a tool to rotate at a high speed by using a motor to perform engraving processing on a workpiece. However, the tool is prone to wear and damage after long-term use. When the tool is seriously worn or damaged, the tool needs to be replaced. In the prior art, the tool of the engraving and milling machine is manually removed from the output end of the motor, and then a new tool is installed on the output end of the motor. This tool replacement method is time-consuming and labor-consuming, has the defect of low tool replacement efficiency, and needs to be improved. SUMMARY

[0004] In view of the defects of the prior art, the technical problem to be solved by the embodiments of the application is to provide an engraving and milling machine capable of automatically replacing a tool.

[0005] To solve the above technical problems, the application provides the following technical scheme:

[0006] An engraving and milling machine capable of automatically replacing a tool, comprising a rotating rod, an elastic extrusion assembly, a tool, a driving assembly, a semicircular bottom cylinder and a limiting assembly,

[0007] The rotating rod is hollow inside,

[0008] The semicircular bottom cylinder is provided in two groups, and the two groups of semicircular bottom cylinders are oppositely distributed at the bottom of the rotating rod and are hingedly connected with the rotating rod,

[0009] The tool is provided in a plurality of groups, one end of one group of the tool is extended from the bottom of the two groups of semicircular bottom cylinders, and the remaining plurality of tools are arranged inside the rotating rod and are sequentially distributed along the length direction of the rotating rod,

[0010] The elastic extrusion assembly is arranged on the inner top of the rotating rod and is used for providing elastic thrust to the plurality of tools,

[0011] The limiting assembly is arranged on the inner wall of the semicircular bottom cylinder and is used for limiting the tool extended from the bottom of the two groups of semicircular bottom cylinders,

[0012] The driving assembly is installed on the outer wall of the rotating rod and is used for driving the two groups of semicircular bottom cylinders to move away from each other.

[0013] As a further improvement of the present application, the cutter comprises a ring-shaped cutter head and a cutter rod fixedly arranged on one side of the ring-shaped cutter head,

[0014] Opposite sides of the two groups of semi-circular bottom cylinders are provided with semi-circular notches through which the cutter rod passes.

[0015] As a further improvement of the present application, the elastic extrusion assembly comprises a first elastic member and a pressing plate,

[0016] The pressing plate is movably arranged inside the rotating rod, one end of the first elastic member is connected to the inner top wall of the rotating rod, and the other end is connected to the pressing plate, for providing elastic support to the pressing plate.

[0017] As a further improvement of the present application, the driving assembly comprises a hydraulic cylinder, a piston rod, a connecting rod and a shaft rod,

[0018] The hydraulic cylinder is fixedly installed on the outer wall of the rotating rod, the piston rod is arranged on the output end of the hydraulic cylinder, the shaft rod is provided in two groups, the two groups of shaft rods are arranged on the sides away from each other of the two groups of semi-circular bottom cylinders, and the two groups of shaft rods are connected through the connecting rod.

[0019] As a further improvement of the present application, the rotating rod is provided with a positioning pin, a sliding groove is formed in the connecting rod, and one end of the positioning pin away from the rotating rod extends into the sliding groove and movably cooperates with the connecting rod.

[0020] As a further improvement of the present application, a plurality of limiting grooves are formed in the circumferential side wall of the ring-shaped cutter head, and limiting protrusions are fixedly arranged on the inner walls of the two groups of semi-circular bottom cylinders.

[0021] As a further improvement of the present application, a recess is formed in the inner wall of the semi-circular bottom cylinder,

[0022] The limiting assembly comprises a wedge-shaped limiting block, a second elastic member and a rope,

[0023] One end of the wedge-shaped limiting block extends into the recess and is connected to the inner wall of the recess through the second elastic member, the second elastic member is used to provide elastic support to the wedge-shaped limiting block, one end of the rope is connected to the shaft rod, and the other end extends into the recess and is connected to the wedge-shaped limiting block.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] In the embodiment of the present application, when the workpiece is engraved, the driving motor drives the rotating rod to rotate, and then drives the two groups of semicircular bottom barrels to rotate. At this time, the cutter extending from the bottom of the two groups of semicircular bottom barrels is limited by the limiting assembly, so that the cutter can rotate synchronously when the two groups of semicircular bottom barrels rotate, and then the workpiece is engraved. When the cutter is seriously worn or damaged, the two groups of semicircular bottom barrels can be driven away from each other by the driving assembly. At this time, the cutter extending from the bottom of the two groups of semicircular bottom barrels automatically slides out, and the cutters in the rotating rod move downward as a whole under the pushing of the elastic extrusion assembly, so that the lowermost group of cutters in the rotating rod extends from the bottom of the two groups of semicircular bottom barrels again, thereby realizing automatic replacement of the cutter. Compared with the prior art, the cutter does not need to be manually replaced, and the worn or damaged cutter can be automatically replaced, saving the cutter replacement time and improving the cutter replacement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure diagram of a precision engraving machine with automatic cutter replacement function.

[0027] Figure 2 It is a structure diagram of a precision engraving machine with automatic cutter replacement function.

[0028] Figure 3 It is Figure 1 It is an enlarged schematic view of area A in

[0029] Figure 4 It is Figure 2 It is an enlarged schematic view of area B in

[0030] Figure 5 It is a structure diagram of a precision engraving machine with automatic cutter replacement function.

[0031] In the figure: 10-rotating rod, 101-positioning pin, 20-elastic extrusion assembly, 201-first elastic member, 202-pressing plate, 30-cutter, 301-annular cutter head, 302-limiting groove, 303-cutter rod, 40-driving assembly, 401-hydraulic cylinder, 402-piston rod, 403-linkage, 404-shaft, 405-slotted guide, 50-semicircular bottom barrel, 501-recess, 502-limiting protrusion, 503-semicircular notch, 60-limiting assembly, 601-wedge-shaped limiting pin, 602-second elastic member, 603-rope. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0033] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0034] Referring to Figure 1 and Figure 2 , the present embodiment provides a precision engraving machine with automatic tool replacement, comprising a rotating rod 10, an elastic extrusion assembly 20, a tool 30, a driving assembly 40, a semicircular bottom cylinder 50 and a limiting assembly 60. The rotating rod 10 is hollow inside. Two groups of semicircular bottom cylinders 50 are arranged opposite to each other at the bottom of the rotating rod 10 and are hingedly connected to the rotating rod 10. The tool 30 is provided in several groups, one end of one group of the tool 30 protrudes from the bottom of the two groups of semicircular bottom cylinders 50, and the remaining several tools 30 are arranged inside the rotating rod 10 and are sequentially distributed along the length direction of the rotating rod 10. The elastic extrusion assembly 20 is arranged on the inside top of the rotating rod 10 and is used to provide elastic thrust to the several tools 30. The limiting assembly 60 is arranged on the inner wall of the semicircular bottom cylinder 50 and is used to limit the tool 30 protruding from the bottom of the two groups of semicircular bottom cylinders 50. The driving assembly 40 is installed on the outer wall of the rotating rod 10 and is used to drive the two groups of semicircular bottom cylinders 50 to move away from each other.

[0035] When the workpiece is engraved, the rotating rod 10 is driven to rotate by an external driving motor (not shown in the figure), thereby driving the two groups of semicircular bottom cylinders 50 to rotate. At this time, the limiting assembly 60 is used to limit the tool 30 protruding from the bottom of the two groups of semicircular bottom cylinders 50, so that the tool 30 can be driven to rotate synchronously when the two groups of semicircular bottom cylinders 50 rotate, thereby engraving the workpiece. When the tool 30 is severely worn or damaged, the driving assembly 40 can be used to drive the two groups of semicircular bottom cylinders 50 to move away from each other. At this time, the tool 30 protruding from the bottom of the two groups of semicircular bottom cylinders 50 automatically slides out, and the several tools 30 located inside the rotating rod 10 are integrally moved downward under the pushing of the elastic extrusion assembly 20, so that the lowermost group of tools 30 located inside the rotating rod 10 protrudes from the bottom of the two groups of semicircular bottom cylinders 50 again, thereby realizing automatic replacement of the tool 30.

[0036] Referring to Figure 1 and Figure 5 In one embodiment, the tool 30 comprises a ring-shaped tool head 301 and a tool rod 303 fixedly arranged on one side of the ring-shaped tool head 301. The opposite sides of the two groups of semicircular bottom cylinders 50 are provided with semicircular notches 503 through which the tool rod 303 can pass.

[0037] When the workpiece is engraved, the annular cutter head 301 is retained inside the two sets of semicircular bottom cylinders 50 and abuts against the inner bottom wall of the two sets of semicircular bottom cylinders 50, and the cutter rod 303 passes through the two sets of semicircular notches 503 and extends from the bottom of the two sets of semicircular bottom cylinders 50.

[0038] Please refer to Figure 1 In an embodiment, the elastic pressing assembly 20 comprises a first elastic member 201 and a pressing plate 202, the pressing plate 202 is movably arranged inside the rotating rod 10, one end of the first elastic member 201 is connected to the inner top wall of the rotating rod 10, and the other end is connected to the pressing plate 202, which is used to provide elastic support for the pressing plate 202, thereby pressing the uppermost set of cutters 30, and when the uppermost set of cutters 30 is pressed, the pressing force can be transmitted to the lowermost cutter 30 through the intermediate cutters 30, so that the annular cutter head 301 of the lowermost cutter 30 abuts against the inner bottom wall of the two sets of semicircular bottom cylinders 50.

[0039] Please refer to Figure 1 In an embodiment, the driving assembly 40 comprises a hydraulic cylinder 401, a piston rod 402, a connecting rod 403, and a shaft rod 404, the hydraulic cylinder 401 is fixedly installed on the outer wall of the rotating rod 10, the piston rod 402 is arranged at the output end of the hydraulic cylinder 401, and the shaft rod 404 is provided in two sets, the two sets of shaft rods 404 are arranged on the sides away from each other of the two sets of semicircular bottom cylinders 50, and the two sets of shaft rods 404 are connected through the connecting rods 403.

[0040] When the cutter 30 needs to be replaced due to wear or damage, the hydraulic rod 401 drives the piston rod 402 to elongate, and when the piston rod 402 elongates, the two sets of connecting rods 403 push the two sets of semicircular bottom cylinders 50 to rotate relative to the bottom of the rotating rod 10, thereby moving away from each other, and when the two sets of semicircular bottom cylinders 50 move away to a certain extent, the annular cutter head 301 originally abutting against the inner bottom wall of the two sets of semicircular bottom cylinders 50 falls off, and the subsequent cutters 30 slide downward along the inside of the rotating rod 10 under the pushing of the pressing plate 202, when the cutter rod 303 of the lowermost cutter 30 extends from the bottom of the two sets of semicircular bottom cylinders 50, the hydraulic cylinder 401 drives the piston rod 402 to retract, thereby driving the two sets of shaft rods 404 to move close to each other through the connecting rods 403, and when the two sets of shaft rods 404 move close to each other, they can push the two sets of semicircular bottom cylinders 50 to move close to each other and re-close into a cylindrical structure, thereby continuing to support the annular cutter head 301 of the lowermost cutter 30, thereby completing the automatic replacement process of the cutter 30.

[0041] Please refer to Figure 3In one embodiment, the outer wall of the rotating rod 10 is fixedly provided with a positioning pin 101, and the connecting rod 403 is provided with a sliding groove 405, and the positioning pin 101 extends into the sliding groove 405 and movably cooperates with the connecting rod 403.

[0042] When the piston rod 402 is extended, one end of the connecting rod 403 rotates relative to the piston rod 402, and the connecting rod 403 rotates relative to the positioning pin 101, and the positioning pin 101 adaptively slides in the sliding groove 405, at this time, the connecting rod 403 rotates relative to the positioning pin 101, and when the connecting rod 403 rotates, the shaft rod 404 is driven to rotate synchronously, the shaft rod 404 drives the semicircular bottom cylinder 50 to rotate relative to the bottom of the rotating rod 10, so that the two groups of semicircular bottom cylinders 50 move away from each other; similarly, when the piston rod 402 is retracted, one end of the connecting rod 403 reversely rotates relative to the piston rod 402, and the connecting rod 403 reversely rotates relative to the positioning pin 101, and the positioning pin 101 reversely adaptively slides in the sliding groove 405, at this time, the connecting rod 403 reversely rotates relative to the positioning pin 101, and when the connecting rod 403 reversely rotates, the shaft rod 404 is driven to reversely rotate synchronously, the shaft rod 404 drives the semicircular bottom cylinder 50 to reversely rotate relative to the bottom of the rotating rod 10, so that the two groups of semicircular bottom cylinders 50 move close to each other and close to form a cylindrical structure at the bottom of the rotating rod 10.

[0043] Please refer to Figure 1 and Figure 4 In one embodiment, a plurality of limiting grooves 302 are formed in the circumferential side wall of the annular cutter head 301, and a limiting protrusion 502 is fixedly arranged on the inner wall of each semicircular bottom cylinder 50.

[0044] When the two groups of semicircular bottom cylinders 50 are closed to form a cylindrical structure at the bottom of the rotating rod 10, the limiting protrusion 502 is inserted into the limiting groove 302, thereby rotating and positioning the annular cutter head 301, so that when the rotating rod 10 rotates to drive the two groups of semicircular bottom cylinders 50 to rotate, the annular cutter head 301 is driven to rotate synchronously by the cooperation of the limiting protrusion 502 and the limiting groove 302, thereby driving the cutter rod 303 to rotate synchronously, and the rotating cutter rod 303 is used for engraving the workpiece.

[0045] Please refer to Figure 4 In one embodiment, a recess 501 is formed in the inner wall of the semicircular bottom cylinder 50, the limiting assembly 60 includes a wedge-shaped limiting block 601, a second elastic member 602, and a rope 603, one end of the wedge-shaped limiting block 601 extends into the recess 501 and is connected to the inner wall of the recess 501 through the second elastic member 602, the second elastic member 602 is used for providing elastic support for the wedge-shaped limiting block 601, one end of the rope 603 is connected to the shaft rod 404, and the other end extends into the recess 501 and is connected to the wedge-shaped limiting block 601.

[0046] When the lowermost annular cutter head 301 is abutted on the inner bottom walls of the two sets of semicircular bottom cylinders 50, the wedge-shaped limiting block 601 is driven to extend into one side of the annular cutter head 301 by the supporting action of the second elastic member 602, thereby vertically positioning the annular cutter head 301 to avoid axial displacement of the annular cutter head 301 along the rotating rod 10 when the cutter rod 303 acts on the workpiece; when the piston rod 402 is elongated to drive the two sets of shaft rods 404 away from each other, the shaft rod 404 can pull the rope body 603, thereby pulling the wedge-shaped limiting block 601 to move into the recess hole 501, so that the wedge-shaped limiting block 601 is removed from one side of the annular cutter head 301 in advance, and then the two sets of semicircular bottom cylinders 50 can be reversely rotated and moved away from each other by the pulling action of the rope body 603 on the wedge-shaped limiting block 601, since the wedge-shaped limiting block 601 is removed from one side of the annular cutter head 301 at this time, the two sets of semicircular bottom cylinders 50 can be smoothly rotated and moved away, and the wedge-shaped limiting block 601 will not interfere with the annular cutter head 301.

[0047] In an embodiment, the first elastic member 201 and the second elastic member 602 can be springs or metal springs, which are not limited here.

[0048] In the embodiment of the application, when the workpiece is engraved, the rotating rod 10 is driven to rotate by an external driving motor (not shown in the figure), thereby driving the two sets of semicircular bottom cylinders 50 to rotate, at this time, the cutter 30 extending from the bottom of the two sets of semicircular bottom cylinders 50 is limited by the limiting assembly 60, so that the cutter 30 can be synchronously rotated when the two sets of semicircular bottom cylinders 50 rotate, thereby engraving the workpiece; when the cutter 30 is seriously worn or damaged, the two sets of semicircular bottom cylinders 50 can be driven to move away from each other by the driving assembly 40, at this time, the cutter 30 extending from the bottom of the two sets of semicircular bottom cylinders 50 automatically slides out, and the cutters 30 located in the rotating rod 10 are integrally moved downward under the pushing of the elastic extrusion assembly 20, so that the lowermost cutter 30 located in the rotating rod 10 is again extended from the bottom of the two sets of semicircular bottom cylinders 50, thereby realizing automatic replacement of the cutter 30. Compared with the prior art, the cutter 30 does not need to be manually replaced, the cutter 30 that is worn or damaged can be automatically replaced, the cutter 30 replacement time is saved, and the cutter 30 replacement efficiency is improved.

[0049] The preferred embodiments of the application are described in detail above, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A precision engraving machine with automatic tool changing capability, characterized in that, The utility model provides a kind of cutting device, including rotating rod, elastic extrusion component, cutter, driving assembly, semicircular bottom cylinder and limiting component, The rotating rod is hollow inside, The semicircular bottom cylinder is provided with two groups, and the two groups of semicircular bottom cylinders are oppositely distributed at the bottom of the rotating rod and connected with the rotating rod, The cutter is provided with several groups, and one end of one group of the cutter extends from the bottom of the two groups of semicircular bottom cylinders, and the remaining several cutters are arranged inside the rotating rod and sequentially distributed along the length direction of the rotating rod, The elastic extrusion component is arranged on the inside top of the rotating rod, for providing elastic thrust to the several cutters, The limiting component is arranged on the inner wall of the semicircular bottom cylinder, for limiting the cutter extending from the bottom of the two groups of semicircular bottom cylinders, The driving assembly is installed on the outer wall of the rotating rod, for driving the two groups of semicircular bottom cylinders away from each other, The driving assembly includes a shaft, The inner wall of the semicircular bottom cylinder is provided with a recess, The limiting component includes a wedge-shaped limiting block, a second elastic member and a rope, One end of the wedge-shaped limiting block extends into the recess and is connected with the inner wall of the recess through the second elastic member, the second elastic member is used for providing elastic support to the wedge-shaped limiting block, one end of the rope is connected with the shaft, and the other end extends into the recess and is connected with the wedge-shaped limiting block.

2. The precise engraving machine with automatic replaceable cutter according to claim 1, characterized in that, The cutter includes an annular cutter head and a cutter rod fixedly arranged on one side of the annular cutter head, The opposite sides of the two groups of semicircular bottom cylinders are provided with semicircular notches through which the cutter rod can pass.

3. The precise engraving machine with automatic replaceable cutter according to claim 1, characterized in that, The elastic extrusion component includes a first elastic member and a pressing plate, The pressing plate is movably arranged inside the rotating rod, one end of the first elastic member is connected with the inside top wall of the rotating rod, and the other end is connected with the pressing plate, for providing elastic support to the pressing plate.

4. The precise engraving machine with automatic tool changing according to claim 1, characterized in that, The driving assembly further includes a hydraulic cylinder, a piston rod and a connecting rod, The hydraulic cylinder is fixedly installed on the outer wall of the rotating rod, the piston rod is arranged on the output end of the hydraulic cylinder, the shaft is provided with two groups, the two groups of shafts are respectively arranged on the sides away from each other of the two groups of semicircular bottom cylinders, and the two groups of shafts are connected with the piston rod through the connecting rod.

5. The precise engraving machine with automatic replaceable cutter according to claim 4, characterized in that, The outer wall of the rotating rod is fixedly provided with a positioning pin, a sliding groove is formed on the connecting rod, and one end of the positioning pin away from the rotating rod extends into the sliding groove and movably cooperates with the connecting rod.

6. The precise engraving machine with automatic replaceable cutter according to claim 2, characterized in that, A plurality of limiting grooves are formed on the circumferential side wall of the annular cutter head, and limiting protrusions are fixedly arranged on the inner walls of the two groups of semicircular bottom cylinders.

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