Pre-milling cutter processing device and wire cutting machine tool

Abstract

The present application discloses a pre-milling cutter processing device and a wire cutting machine tool to solve the problems of small application range, low precision and short life of the wire frame of the wire cutting machine tool in the prior art. The present application includes: a workbench, on which a swing wire mechanism and a rotating mechanism are arranged; the swing wire mechanism includes a swing wire shaft and a peripheral structure, the peripheral structure is connected to the outside of the swing wire shaft and is wound with a metal wire; the swing wire shaft includes a mandrel, a first coupling and a first motor, and a deep groove ball bearing, a first bearing spacer and a first angular contact bearing are arranged between the first bearing sleeve and the mandrel; the rotating mechanism includes a main shaft, a second coupling and a second motor, a tool handle is arranged on the right side of the main shaft, and a pre-milling cutter is installed on the right outer ring of the tool handle; the rotation of the swing wire shaft drives the rotation of the peripheral structure, drives the metal wire to swing, so that the metal wire is processed into an inclined surface or an arc surface on the pre-milling cutter to meet the processing of a large-angle diamond pre-milling cutter; the present application has a simple structure, convenient operation, long service life and high processing precision.

Description

Technical Field

[0001] The present application relates to the technical field of wire cutting machine tools, and in particular to a pre-milling cutter processing device and a wire cutting machine tool. Background Art

[0002] Various furniture and some industrial products related to us in life are basically assembled by various boards through riveting, screw connection, bonding and other methods. The requirements for the edge banding quality of the basic board are getting higher and higher. Boards with higher edge banding quality have the following advantages: ① Effectively protect the product from or less affected by the processing environment and the use environment, and have strong impact resistance during transportation, assembly and normal use; ② Improve the overall visual beauty of the product; ③ Improve the use function of the product, so that the product is more in line with the decoration style of the building and people's aesthetics.

[0003] The traditional processing method for edge banding of basic boards is to use ordinary alloy cutting tools for cutting. With the increasing environmental protection requirements for furniture, the material of basic boards is constantly changing, from traditional wood composite materials to diversified transformation and development of particleboard, density board, fireproof board, plywood, fiberboard materials, etc. In this way, traditional alloy cutting tools are gradually unable to meet the requirements of high-quality and long-life cutting, and the disadvantages of rough edge banding cutting surface, short tool life, and high cost of repeated tool grinding are becoming increasingly obvious.

[0004] With the growing rise and vigorous development of the domestic superhard industry, traditional alloy tools are gradually being replaced by diamond tools. Diamond tools have the following advantages: ① High blade strength, not easy to break teeth, and good sharpness; ② The spiral tooth shape is matched with the plate to prevent edge breakage and blackening, which can improve the appearance quality of the product; ③ Long service life and durability, which can reduce production costs and grinding costs, improve production efficiency and work safety, and reduce the labor intensity of workers; It can reduce the motor load and extend the motor life.

[0005] The diamond edge banding machine pre-milling cutter has also achieved the transformation from traditional alloy tools to diamond tools. For the processing and grinding of diamond tools, the commonly used processing methods are EDM and track EDM. The above processing methods have a narrow range of applications: for example, EDM requires a motor wheel with higher turning accuracy (such as the sharpening machines of Diamon Carter, Ande Jianqi, and Beijing Ninghua in China, and Vollmer in foreign countries); the equipment for track processing abroad is expensive (such as the five-axis sharpening machine and five-axis cutting machine of Vollmer in Germany), so the market promotion and application of diamond large-angle edge banding machine pre-milling cutter are greatly hindered.

[0006] At present, the types of complex upper and lower special-shaped workpieces that can be processed by standard wire cutting machines are relatively small, and cannot meet the needs of specific industries. The processing of pre-milling cutters on the market is carried out by cutting through the wire frame of the wire cutting machine. The inclination of the wire cutting wire is usually achieved by moving the UV axis forward, backward, left and right. The lower main wheel is installed on the lower arm and is fixed. The upper main wheel is installed on the UV axis and moves forward, backward, left and right. The inclination of the wire is achieved by linear movement, which is used to process upper and lower special-shaped parts. When tilting, the electrode wire will produce displacement changes where it contacts the upper and lower main wheels. If there is no wire stabilizing device, it can only be tilted at a very small angle, about ±1.5°. If it is greater than this angle, the wire will slip out of the tangent of the V-groove of the guide wheel, resulting in a decrease in accuracy or the wire slipping out of the guide wheel. If a wire stabilizing device is added, the wire stabilizing device will form a large tilt angle with the electrode wire, which will seriously reduce the life of the wire stabilizing device. In addition, the tilt angle can only reach ±10° at most, otherwise it will seriously affect the accuracy and life. At the same time, the traditional 3R fixtures are expensive, and when they are subjected to external forces during operation, their accuracy will be reduced, which places high technical requirements on the operators. Once a problem occurs, very professional personnel are needed to make timely adjustments. In response to this problem, the industry has also tried to improve the overall architecture, but due to the conventional structure of some key components, it is still difficult to achieve the expected results. Summary of the invention

[0007] To this end, the present application provides a pre-milling cutter processing device and a wire cutting machine to solve the problems of small application range, low precision and short life of the wire frame of the wire cutting machine in the prior art.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] In a first aspect, a pre-milling cutter processing device is characterized in that it comprises: a wire swing mechanism and a rotating mechanism arranged on a workbench, and the wire swing mechanism and the rotating mechanism are arranged vertically;

[0010] The swing wire mechanism includes a swing wire shaft and a peripheral structure, the peripheral structure is connected to the outside of the swing wire shaft and is wound with a metal wire, the rotation of the swing wire shaft drives the peripheral structure to rotate, and then drives the metal wire to swing; the swing wire shaft includes a core shaft, a first coupling, a first harmonic reducer and a first motor connected in sequence, the right end of the core shaft is provided with a first pressure cover, and the left end of the first motor is provided with a second pressure cover; the outer side of the core shaft is sleeved with a first bearing sleeve, and a deep groove ball bearing, a first bearing spacer and a first angular contact bearing are arranged between the first bearing sleeve and the core shaft from left to right, and the left side of the first bearing sleeve is fixedly connected with a third pressure cover; the outer sides of the first coupling, the first harmonic reducer and the first motor are provided with a support spacer, the second pressure cover is fixedly connected to the left end of the support spacer, and the left side of the second pressure cover is connected with a support bearing;

[0011] The rotating mechanism includes a main shaft, a second coupling, a second harmonic reducer and a second motor connected in sequence; a tool handle is arranged on the right side of the interior of the main shaft, a pre-milling cutter is installed on the right outer ring of the tool handle and is clamped by a fifth pressure cover; the metal wire is used for cutting the pre-milling cutter; a second bearing sleeve is sleeved on the outer side of the main shaft, a seventh pressure cover is arranged on the right side of the second bearing sleeve, and a matching bearing, a second bearing spacer sleeve and a second angular contact bearing are arranged between the second bearing sleeve and the main shaft from left to right, and a sixth pressure cover is fixedly connected to the left side of the second bearing sleeve.

[0012] Optionally, a first locking nut is provided on the left side of the deep groove ball bearing, and the first locking nut is used to lock the deep groove ball bearing, the first bearing spacer and the first angular contact bearing;

[0013] A second locking nut is arranged on the left side of the paired bearing, and the second locking nut is used to lock the paired bearing, the second bearing spacer, and the second angular contact bearing.

[0014] Optionally, a first skeleton oil seal is installed inside the first gland to press the first angular contact bearing and the first gland tightly;

[0015] A second skeleton oil seal is installed inside the seventh gland to press the second angular contact bearing and the seventh gland tightly to ensure the sealing performance.

[0016] Optionally, a fourth gland is provided on the right side of the first gland, and a sealing ring is provided between the right outer ring of the core shaft and the left side of the fourth gland.

[0017] Optionally, a first coupling seat is provided on the outer side of the first coupling; and a second coupling seat is provided on the outer side of the second coupling.

[0018] Optionally, a fixing seat is provided at the bottom of the second bearing sleeve, and the fixing seat is fixed to the workbench by T-shaped screws.

[0019] Optionally, the spindle is connected to the tool handle via a third locking nut.

[0020] Optionally, four power input components are arranged at the rear of the peripheral structure to ensure the stability of the power input structure.

[0021] Optionally, the first bearing sleeve and the second bearing sleeve are made of cast iron.

[0022] In the second aspect, a wire cutting machine tool is special in that it adopts the above-mentioned pre-milling cutter processing device and also includes a base, a moving mechanism, a wire transport mechanism and a tension mechanism. The tension mechanism is arranged between the wire transport mechanism and the wire swing mechanism. The metal wire is sequentially wound around the wire transport mechanism, the tension mechanism and the wire swing mechanism to form a closed loop.

[0023] Compared with the prior art, this application has at least the following beneficial effects:

[0024] 1. The present application provides a mutually perpendicular swing wire mechanism and a rotating mechanism on a workbench, wherein the swing wire mechanism comprises a swing wire shaft and a peripheral structure, wherein the peripheral structure is connected to the outside of the swing wire shaft and is wound with a metal wire; the swing wire shaft comprises a mandrel, a first coupling, a first harmonic reducer and a first motor connected in sequence, and a deep groove ball bearing, a first bearing spacer and a first angular contact bearing are arranged in sequence between the first bearing sleeve and the mandrel from left to right; the rotating mechanism comprises a main shaft, a second coupling, a second harmonic reducer and a second motor connected in sequence, a tool handle is arranged on the inner right side of the main shaft, and a pre-milling cutter is installed on the right outer ring of the tool handle; the peripheral structure is driven to rotate by the rotation of the swing wire shaft , thereby driving the metal wire to swing, realizing the cutting processing of the metal wire on the pre-milling cutter, so that the metal wire is processed into an inclined surface or an arc surface on the pre-milling cutter to meet the processing of the large-angle diamond pre-milling cutter; the application has a simple structure, convenient operation, low cost, high processing accuracy, long life, and low requirements for operators; the setting of the first harmonic reducer and the second harmonic reducer makes the operation smooth and more stable during operation, and the linkage effect of the three axes of X, Y and A is better; the core shaft, the first coupling, the first harmonic reducer and the first motor are coaxially arranged, and the main shaft, the second coupling, the second harmonic reducer and the second motor are coaxially arranged, with high transmission accuracy and high processing efficiency.

[0025] 2. The present application also installs a first skeleton oil seal inside the first gland to press the first angular contact bearing against the first gland, thereby increasing the sealing performance; and installs a second skeleton oil seal inside the seventh gland to press the second angular contact bearing against the seventh gland, thereby increasing the sealing performance.

[0026] 3. The present application provides four power-inlet components at the rear of the peripheral structure, which not only simplifies the structure but also ensures the stability and reliability of the power-inlet structure.

[0027] 4. In the present application, a CNC probe assembly is arranged behind the first bearing sleeve. The CNC probe assembly is used to obtain the parameters of the pre-milling cutter and transmit the parameters to the computer. The computer controls the operation of the swing wire shaft through software, which increases intelligence and improves processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0029] Figure 1 A schematic diagram of a structure provided for an embodiment of the present application;

[0030] Figure 2 for Figure 1 The structure of the swing wire shaft Figure 1 ;

[0031] Figure 3 for Figure 1 The structure of the swing wire shaft Figure 2 ;

[0032] Figure 4 for Figure 2 A cross-sectional view of

[0033] Figure 5 for Figure 1 Schematic diagram of the rotating mechanism in Figure 1 ;

[0034] Figure 6 for Figure 1 Schematic diagram of the rotating mechanism in Figure 2 ;

[0035] Figure 7 for Figure 5 A cross-sectional view of

[0036] Figure 8 for Figure 1 A schematic diagram of the structure of the swing wire shaft and the peripheral structure;

[0037] Fig. 9 for Figure 8 A partial schematic diagram of the

[0038] Fig.10 for Figure 8 Rear view in;

[0039] Fig.11 This is a structural schematic diagram of an embodiment of the present application applied to a machine tool;

[0040] Fig.12 for Fig.11 Schematic diagram of the tension mechanism in the figure.

[0041] Description of reference numerals:

[0042] 1. Swing wire mechanism;

[0043] 2. Swing wire shaft; 201. Mandrel; 202. First coupling; 203. First harmonic reducer; 204. First motor; 205. First gland; 206. Second gland; 207. First bearing sleeve; 208. Deep groove ball bearing; 209. First bearing spacer; 210. First angular contact bearing; 211. First locking nut; 212. Third gland; 213. Fourth gland; 214. Support spacer; 215. Support bearing; 216. First coupling seat; 217. Adapter flange; 218. First skeleton oil seal; 219. Sealing ring;

[0044] 3. Peripheral structure; 301. Vertical bracket; 302. Vertical bracket; 303. First horizontal bracket; 304. Second horizontal bracket; 305. First guide wheel assembly; 306. Second guide wheel assembly; 307. Third guide wheel assembly; 308. Fourth guide wheel assembly; 3081. Upper guide wheel frame; 3082. Upper water spray plate; 3083. Upper wire guide nozzle; 309. Fifth guide wheel assembly; 310. Third horizontal bracket; 3101. Sixth guide wheel assembly; 3102. Lower water spray plate; 3103. Lower wire guide nozzle; 311. CNC probe assembly; 312. Protective sheet metal; 313. First power inlet assembly; 314. Second power inlet assembly; 315. Third power inlet assembly; 316. Fourth power inlet assembly;

[0045] 4. Rotating mechanism; 401. Spindle; 402. Second coupling; 403. Second harmonic reducer; 404. Second motor; 405. Tool handle; 406. Pre-milling cutter; 407. Fifth gland; 408. Second bearing sleeve; 409. Matching bearing; 410. Second bearing spacer; 411. Second angular contact bearing; 412. Second locking nut; 413. Sixth gland; 414. Seventh gland; 415. Shield; 416. Fixing seat; 417. T-screw; 418. Second skeleton oil seal; 419. Second coupling seat; 420. Third locking nut;

[0046] 5. Workbench; 6. Base; 7. Moving mechanism; 8. Wire transport mechanism; 801. Wire drum; 9. Tension mechanism; 901. Tension mounting base plate; 902. Tension guide rail; 903. Guide wheel mounting plate; 904. Tensioner. DETAILED DESCRIPTION

[0047] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0048] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0049] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0050] One embodiment of the present application is a pre-milling cutter processing device, such as Figure 1 As shown, it includes: a swing wire mechanism 1 and a rotating mechanism 4 arranged vertically on a workbench 5, and the swing wire mechanism 1 and the rotating mechanism 4 are arranged vertically;

[0051] like Figure 2-Figure 4 As shown, the swing wire mechanism 1 includes a swing wire shaft 2 and a peripheral structure 3, the peripheral structure 3 is connected to the outside of the swing wire shaft 2, a metal wire is wound around the peripheral structure 3, the swing wire shaft 2 rotates to drive the peripheral structure 3 to rotate, and then drives the metal wire to swing; the swing wire shaft 2 includes a core shaft 201, a first coupling 202, a first harmonic reducer 203 and a first motor 204 connected in sequence, and are coaxially arranged; the right end of the core shaft 201 is provided with a first pressure cover 205, and the left end of the first motor 204 is provided with a second pressure cover 206; the outer side of the core shaft 201 is sleeved with a first bearing sleeve 207, and the first bearing sleeve A deep groove ball bearing 208, a first bearing spacer 209, and a first angular contact bearing 210 are sequentially arranged between 207 and the core shaft 201 from left to right, and are locked by a first locking nut 211. A third gland 212 is arranged on the left side of the first bearing sleeve 207, and the third gland 212 is fixedly connected to the first bearing sleeve 207; a support spacer 214 is arranged on the outer side of the first coupling 202, the first harmonic reducer 203 and the first motor 204, and the second gland 206 is fixedly connected to the left end of the support spacer 214, and a support bearing 215 is connected to the left side of the second gland 206;

[0052] like Figure 5-Figure 7As shown, the rotating mechanism 4 includes a main shaft 401, a second coupling 402, a second harmonic reducer 403 and a second motor 404 which are connected in sequence and are coaxially arranged; a tool handle 405 is arranged on the right side of the main shaft 401, and a pre-milling cutter 406 is installed on the right outer ring of the tool handle 405 and is pressed by a fifth pressure cover 407; the metal wire is used to cut the pre-milling cutter 406, and the pre-milling cutter 406 is a large-angle diamond pre-milling cutter, and one side of the pre-milling cutter 406 is close to the peripheral structure 3; the outer side of the main shaft 401 is sleeved with a second bearing sleeve 408, the right side of the second bearing sleeve 408 is provided with a seventh pressure cover 414, and the second bearing sleeve 408 and the main shaft 401 are provided with a matching bearing 409, a second bearing spacer sleeve 410, and a second angular contact bearing 411 from left to right, and are locked by a second locking nut 412, and the left side of the second bearing sleeve 408 is provided with a sixth pressure cover 413, and the sixth pressure cover 413 is fixedly connected to the second bearing sleeve 408.

[0053] Preferably, a fourth gland 213 is provided on the right side of the first gland 205 , and a sealing ring 219 is provided between the right outer ring of the core shaft 201 and the left side of the fourth gland 213 .

[0054] Preferably, a first coupling seat 216 is provided on the outer side of the first coupling 202; the first motor 204 is a hybrid stepping motor, which is open-loop controlled and does not involve position detection; the setting of the hybrid stepping motor makes the rotation of the core shaft 201 more stable, overcoming the jitter and instability caused by the traditional AC servo motor.

[0055] Preferably, an adapter flange 217 is provided between the first harmonic reducer 203 and the first motor 204 .

[0056] Preferably, a first skeleton oil seal 218 is installed inside the first pressure cover 205 to press the first angular contact bearing 210 and the first pressure cover 205 to ensure their sealing; a second skeleton oil seal 418 is installed inside the seventh pressure cover 414 to press the second angular contact bearing 411 and the seventh pressure cover 414 to ensure their sealing.

[0057] Preferably, a second coupling seat 419 is provided on the outer side of the second coupling 402 ; a fixing seat 416 is provided on the bottom of the second bearing sleeve 408 , and the fixing seat 416 is fixed on the workbench 5 by T-screws 417 .

[0058] Preferably, the spindle 401 is connected to the tool handle 405 via a third locking nut 420; the tool handle 405 is a BT40 tool handle, and the third locking nut 420 is a double-threaded locking nut.

[0059] Preferably, a shield 415 is provided on the outer sides of the second coupling 402 , the second harmonic reducer 403 and the second motor 404 , and the right side of the shield 415 is fixedly connected to the second bearing sleeve 408 .

[0060] Preferably, the first bearing sleeve 207 and the second bearing sleeve 408 are made of cast iron; the model of the second bearing sleeve 408 is HT250.

[0061] Preferably, if Figure 8-Figure 10 As shown, the peripheral structure 3 includes a vertical bracket 301, a vertical bracket 302 is arranged on the left side of the vertical bracket 301, a first horizontal bracket 303 is arranged on the upper part, and a second horizontal bracket 304 is arranged on the lower part. The vertical bracket 302 is provided with a vertically arranged first guide wheel assembly 305 and a second guide wheel assembly 306, the left and right sides of the first horizontal bracket 303 are respectively provided with a third guide wheel assembly 307 and a fourth guide wheel assembly 308, and the second horizontal bracket 304 is provided with a fifth guide wheel assembly 309; the second pressure cover 206 is connected to the middle part of the vertical bracket 301; the vertical bracket 301 is connected to the support bearing 215.

[0062] Further preferably, a third cross bracket 310 is provided at the right end of the first bearing sleeve 207, and the third cross bracket 310 is provided with a sixth guide wheel assembly 3101; the fourth guide wheel assembly 308 is installed on the right side of the first cross bracket 303 through the upper guide wheel frame 3081, and an upper water spray plate 3082 is provided at the bottom of the upper guide wheel frame 3081, and the upper water spray plate 3082 is connected to the upper wire guide nozzle 3083, and a lower water spray plate 3102 is provided on the upper part of the sixth guide wheel assembly 3101, and the lower water spray plate 3102 is connected to the lower wire guide nozzle 3103.

[0063] Further preferably, a CNC probe assembly 311 is provided behind the first bearing sleeve 207 , and the CNC probe assembly 311 is used to obtain parameters of the pre-milling cutter 406 and transmit the parameters to a computer, and the computer controls the operation of the swing wire shaft 2 through software program settings.

[0064] Preferably, if Fig.10As shown, four power input components are arranged at the rear of the peripheral structure 3, which are respectively recorded as the first power input component 313, the second power input component 314, the third power input component 315 and the fourth power input component 316. The first power input component 313 and the second power input component 314 are located at the upper left part and the lower left part of the rear of the peripheral structure 3. The first power input component 313 corresponds to one side of the fourth guide wheel component 308, and the second power input component 314 corresponds to one side of the sixth guide wheel component 3101. The first power input component 313 and the second power input component 314 provide negative power to the fourth guide wheel component 308 and the sixth guide wheel component 3101 respectively; the third power input component 315 and the fourth power input assembly 316 are located at the upper right side and the lower right side of the rear part of the peripheral structure 3; in the present application, the first power input assembly 313 and the second power input assembly 314 are sliding frictions, which require manual adjustment of the position of the metal wire, and the third power input assembly 315 and the fourth power input assembly 316 are rolling frictions, which replace the sliding friction, have small resistance, and small friction on the metal wire. In addition, the arrangement of the third power input assembly 315 and the fourth power input assembly 316 makes the power input structure more reliable, without manual inspection and adjustment, thereby reducing the labor intensity of the operator; the radial power input form design not only simplifies the structure, but also ensures the stability and reliability of the power input structure.

[0065] Preferably, it further includes a protective sheet metal 312 , which is disposed on the outer sides of the vertical bracket 301 , the first horizontal bracket 303 and the second horizontal bracket 304 .

[0066] A wire cutting machine tool, comprising the above-mentioned pre-milling cutter processing device, such as Fig.11 , Fig.12 As shown, it also includes a base 6, and a wire transport mechanism 8 located on the left and a moving mechanism 7 located on the right are arranged on the upper part of the base 6. A tension mechanism 9 is arranged between the wire transport mechanism 8 and the wire swing mechanism 1. The metal wire is sequentially wound around the wire transport mechanism 8, the tension mechanism 9 and the wire swing mechanism 1 to form a closed loop.

[0067] The swing wire mechanism 1 and the rotating mechanism 4 are the core mechanisms of this machine tool. After adding the specific parameters of the customer's tool to the operation interface, the software will automatically calculate the required angle of the metal wire (swing wire) and the avoidance distance, and automatically generate an automatic tool cutting program. Since the data collected by the CNC probe assembly 311 is transmitted to the software, the edited action instructions are sent to the swing wire mechanism 1 during the tool cutting process, and the swing wire mechanism 1 adjusts different cutting states from time to time.

[0068] Preferably, the moving mechanism 7 includes an X-axis moving member 701, a Y-axis moving member 702 and a Z-axis moving member 703, the X-axis moving member 701 and the Y-axis moving member 702 are vertically arranged, and the X-axis moving member is located above the Y-axis moving member and is connected by a connecting member; a workbench 5 is arranged on the upper part of the X-axis moving member 701 and the Y-axis moving member 702, and the workbench 5 moves with the X-axis moving member 701 and the Y-axis moving member 702, driving the pre-milling cutter 406 to move;

[0069] The swing wire mechanism 1 is connected to the tension mechanism 9 through the Z-axis moving part 703, and the tension mechanism 9 is connected to the Z-axis moving part through the column optical machine. The swing wire mechanism 1 moves following the Z-axis moving part 703; the swing wire mechanism 1 includes a swing wire shaft 2 and a peripheral structure 3 connected to the swing wire shaft 2, and the metal wire is wound around the peripheral structure 3. As the swing wire shaft 2 rotates, the peripheral structure 3 is driven to rotate, and then the metal wire is driven to swing. The swing wire shaft 2 changes its processing angle and can swing 30° left and right.

[0070] like Fig.11 As shown, the wire transport mechanism 8 includes a wire drum 801 wound with a metal wire, and the wire drum 801 is driven by a third motor; Fig.12 As shown, the tension mechanism 9 includes a tension mounting base plate 901, on which a tension guide rail 902 is mounted. The slider of the tension guide rail 902 can move freely up and down, and a guide wheel mounting plate 903 (which can also be counterweighted) is mounted on the upper part of the slider. Six tensioning wheels 904 are respectively mounted in the upper guide wheel seat and the lower guide wheel seat, and the sides are fastened with set screws.

[0071] The assembly sequence of the swing wire shaft 2 of the above embodiment is as follows: first, install the first angular contact bearing 210 inside the first bearing sleeve 207, install the first skeleton oil seal 218 inside the first gland 205, press the first gland 205 against the outer ring of the first angular contact bearing 210 and tighten it; install the mandrel 201, and install the first bearing spacer 209 and the deep groove ball bearing 208 in sequence, and lock them with the first locking nut 211; install the third gland 212 and detect the end runout, then install the first coupling 202, the first coupling seat 216 and the first harmonic reducer 203 in sequence, and tighten the first coupling 202; install the adapter flange 217 and the first motor 204, and power on for detection; install the support spacer 214, the second gland 206 and the support bearing 215; finally, install the fourth gland 213 and the sealing ring 219, and power on for detection of the operating status and accuracy.

[0072] Working principle: The core shaft 201 rotates 360° driven by the first motor 204, and the first harmonic reducer 203 and the first coupling 202 rotate synchronously. If the first motor 204 suddenly loses power at any angle, the swing wire shaft 2 will not move to a new position.

[0073] The assembly sequence of the rotating mechanism 4 of the above embodiment is as follows: first, install the second angular contact bearing 411 inside the second bearing sleeve 408, use the seventh pressure cover 414 to press it, and match the second skeleton oil seal 418 for sealing; install the main shaft 401, install the second bearing spacer 410 on the left outer ring of the main shaft 401, then install the matching bearing 409, and use the precise second locking nut 412 to lock it, and install the sixth pressure cover 413 when using it; then install the second coupling seat 419, add the second coupling 402 in the middle, install the second harmonic reducer 403 and the second motor 404 in turn and tighten them; install the shield 415, and use the third locking nut 420 on the right side to connect the tool handle 405 and the main shaft 401; install the pre-milling cutter 406 (large-angle diamond pre-milling cutter) in turn and use the fifth pressure cover 407 to press it; the BT40 shaft assembled as a whole is installed on the fixed seat 416 and fixed on the workbench 5 by the T-screw 417.

[0074] Working principle: The rotating mechanism 4 (BT40 axis) can make 360° independent rotation movement driven by the second motor 404, while the second harmonic reducer 403 and the second coupling 402 rotate synchronously. If the second motor 404 suddenly loses power at any angle, the axis will not move to a new position; it can also be linked with the X-axis and Y-axis to cut and process the workpiece during the cutting process. Since the axis adopts the standard BT40 interface, the ER40 adapter handle produced by our company can also be replaced to realize the installation and application of the ER40 jacket.

[0075] The present application drives the peripheral structure to rotate by rotating the swing wire shaft, thereby driving the metal wire to swing, thereby realizing the cutting processing of the metal wire on the pre-milling cutter, so that the metal wire is processed into an inclined surface or an arc surface on the pre-milling cutter to meet the processing of the large-angle diamond pre-milling cutter; the present application has a simple structure, is easy to operate, has low requirements for operators, is low in cost, has high processing and transmission accuracy, and has a long service life; the reduction ratio of the first harmonic reducer and the second harmonic reducer is 1:100, so that the operation is smooth and more stable during operation, and the linkage effect of the three axes X, Y, and A is better; the core shaft, the first coupling, the first harmonic reducer and the first motor are coaxially arranged, and the main shaft, the second coupling, the second harmonic reducer and the second motor are coaxially arranged, with high transmission accuracy and high processing efficiency.

[0076] In addition, a first skeleton oil seal is installed inside the first pressure cover to press the first angular contact bearing against the first pressure cover, thereby improving the sealing performance; a second skeleton oil seal is installed inside the seventh pressure cover to press the second angular contact bearing against the seventh pressure cover, thereby improving the sealing performance; four power-input components are arranged at the rear of the peripheral structure, which not only simplifies the structure but also ensures the stability and reliability of the power-input structure; a CNC probe assembly is arranged at the rear of the first bearing sleeve, and the CNC probe assembly is used to obtain the parameters of the pre-milling cutter and transmit the parameters to the computer. The computer controls the operation of the swing wire shaft through a software program, thereby increasing the intelligence and improving the machining accuracy.

[0077] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0078] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A pre-milling cutter processing device, characterized in that: include: A wire swinging mechanism and a rotating mechanism are arranged on the workbench, and the wire swinging mechanism and the rotating mechanism are arranged vertically; The swing wire mechanism includes a swing wire shaft and a peripheral structure, the peripheral structure is connected to the outside of the swing wire shaft and is wound with a metal wire, the rotation of the swing wire shaft drives the peripheral structure to rotate, and then drives the metal wire to swing; the swing wire shaft includes a core shaft, a first coupling, a first harmonic reducer and a first motor connected in sequence, the right end of the core shaft is provided with a first pressure cover, and the left end of the first motor is provided with a second pressure cover; the outer side of the core shaft is sleeved with a first bearing sleeve, and a deep groove ball bearing, a first bearing spacer and a first angular contact bearing are arranged between the first bearing sleeve and the core shaft from left to right, and the left side of the first bearing sleeve is fixedly connected with a third pressure cover; the outer sides of the first coupling, the first harmonic reducer and the first motor are provided with a support spacer, the second pressure cover is fixedly connected to the left end of the support spacer, and the left side of the second pressure cover is connected with a support bearing; The rotating mechanism comprises a main shaft, a second coupling, a second harmonic reducer and a second motor connected in sequence, a tool handle is arranged on the right side of the inside of the main shaft, a pre-milling cutter is installed on the right outer ring of the tool handle and is pressed by a fifth pressure cover; the metal wire is used to cut the pre-milling cutter; a second bearing sleeve is sleeved on the outer side of the main shaft, a seventh pressure cover is arranged on the right side of the second bearing sleeve, and a matching bearing, a second bearing spacer sleeve and a second angular contact bearing are arranged in sequence from left to right between the second bearing sleeve and the main shaft, and a sixth pressure cover is fixedly connected to the left side of the second bearing sleeve; The peripheral structure includes a vertical bracket, a vertical bracket is arranged on the left side of the vertical bracket, a first horizontal bracket is arranged on the upper part, and a second horizontal bracket is arranged on the lower part. The vertical bracket is provided with a first guide wheel assembly and a second guide wheel assembly arranged vertically, and the left and right sides of the first horizontal bracket are respectively provided with a third guide wheel assembly and a fourth guide wheel assembly, and the second horizontal bracket is provided with a fifth guide wheel assembly; the second pressure cover is connected to the middle part of the vertical bracket; the vertical bracket is connected to the support bearing; the right end of the first bearing sleeve is provided with a third horizontal bracket, and the third horizontal bracket is provided with a sixth guide wheel assembly; the fourth guide wheel assembly is installed on the right side of the first horizontal bracket through an upper guide wheel frame, and an upper water spray plate is provided at the bottom of the upper guide wheel frame, and the upper water spray plate is connected to the upper wire guide nozzle, and a lower water spray plate is provided on the upper part of the sixth guide wheel assembly, and the lower water spray plate is connected to the lower wire guide nozzle; Four power input assemblies are arranged at the rear of the peripheral structure, which are respectively denoted as the first power input assembly, the second power input assembly, the third power input assembly and the fourth power input assembly. The first power input assembly and the second power input assembly are located at the upper left side and the lower left side of the rear of the peripheral structure. The first power input assembly corresponds to one side of the fourth guide wheel assembly, and the second power input assembly corresponds to one side of the sixth guide wheel assembly. The first power input assembly and the second power input assembly provide negative power supply for the fourth guide wheel assembly and the sixth guide wheel assembly respectively; the third power input assembly and the fourth power input assembly are located at the upper right side and the lower right side of the rear of the peripheral structure; the first power input assembly and the second power input assembly are sliding friction, and the third power input assembly and the fourth power input assembly are rolling friction.

2. The pre-milling cutter processing device according to claim 1, characterized in that: A first locking nut is arranged on the left side of the deep groove ball bearing, and the first locking nut is used to lock the deep groove ball bearing, the first bearing spacer and the first angular contact bearing; A second locking nut is arranged on the left side of the paired bearing, and the second locking nut is used to lock the paired bearing, the second bearing spacer, and the second angular contact bearing.

3. The pre-milling cutter processing device according to claim 1 or 2, characterized in that: A first skeleton oil seal is installed inside the first gland, for pressing the first angular contact bearing and the first gland tightly; A second skeleton oil seal is installed inside the seventh gland to press the second angular contact bearing and the seventh gland tightly to ensure the sealing performance.

4. The pre-milling cutter processing device according to claim 1, characterized in that: A fourth gland is arranged on the right side of the first gland, and a sealing ring is arranged between the right outer ring of the core shaft and the left side of the fourth gland.

5. The pre-milling cutter processing device according to claim 1, characterized in that: A first coupling seat is disposed on the outer side of the first coupling; a second coupling seat is disposed on the outer side of the second coupling.

6. The pre-milling cutter processing device according to claim 1, characterized in that: A fixing seat is arranged at the bottom of the second bearing sleeve, and the fixing seat is fixed to the workbench by T-shaped screws.

7. The pre-milling cutter processing device according to claim 1, characterized in that: The main shaft is connected to the tool handle via a third locking nut.

8. The pre-milling cutter processing device according to claim 1, characterized in that: The first bearing sleeve and the second bearing sleeve are made of cast iron.

9. A wire cutting machine tool, characterized in that: The pre-milling cutter processing device according to any one of claims 1 to 8 further includes a base, a moving mechanism, a wire transport mechanism and a tension mechanism, wherein the tension mechanism is arranged between the wire transport mechanism and the wire swing mechanism, and the metal wire is sequentially wound around the wire transport mechanism, the tension mechanism and the wire swing mechanism to form a closed loop.

Images