A kind of automatic integrated processing machine tool for inner and outer blade edge and square opening of pliers

Abstract

This invention discloses an automated integrated machine tool for machining the inner and outer cutting edges and square edges of pliers. It includes a base on which two sets of milling cutter assemblies are arranged side-by-side: a first milling cutter assembly and a second milling cutter assembly. The first milling cutter assembly's cutting tool assembly can tilt and swing, and its milling cutter spindle is vertically positioned, corresponding to the cutting edge of the pliers to be machined. The second milling cutter assembly's milling cutter spindle is horizontally positioned, and the second milling cutter assembly is located after the first milling cutter assembly. The machining positions of the first and second milling cutter assemblies share a machining fixture, and the machining fixture enables automatic sequential movement of the two machining positions via a fixture base and a movable platform below the fixture base. The purpose of this invention is to provide an automated integrated machine tool for machining the inner and outer cutting edges and square edges of pliers, facilitating the machining of the inner and outer cutting edges and square edges of pliers, reducing clamping steps, increasing speed and efficiency, and lowering processing costs.

Description

Technical Field

[0001] This invention belongs to the field of hardware tool manufacturing and relates to a processing equipment for pliers, specifically an automated integrated machine tool for processing the inner and outer cutting edges and square openings of pliers. Background Technology

[0002] Pliers are a widely used hardware tool, and the pliers head is its main working element, used for cutting wires, iron wires, or thin sheet metal. The functional area of ​​the pliers head generally includes the following elements: inner cutting edge, outer cutting edge, etc. Figures 1-2 As shown, the pliers consist of two symmetrical halves, namely the left pliers body 8011 and the right pliers body 8012, which respectively include a pliers head 81 and a pliers handle 82; the pliers head 81 is provided with an outer cutting edge 802, an inner cutting edge 803 and a square edge 804 for cutting, as well as a grinding disc for assembly (at the central circular hole in the figure, not labeled).

[0003] In addition, by observing the cutting edge and square opening of the pliers, and combining this with the characteristics of the pliers, we can know that ( Figures 1-2 The cutting edge and the square jaw of the pliers are both inclined structures, and the angle and position of the inclined jaw are different for different sizes of pliers. Therefore, when processing different cutting edges of pliers, general automated processing equipment needs to use different clamps for clamping, resulting in long machine changeover times.

[0004] In the existing pliers head processing technology, when manufacturing pliers, these four elements on the pliers head are completed by two processes and eight processing stations. The left pliers body is clamped four times and processed at four stations; the right pliers body is clamped four times and processed at four stations. Moreover, the existing technology mostly involves manual clamping, resulting in low production efficiency and high labor intensity.

[0005] Especially for processing the outer cutting edge, inner cutting edge, and square edge of pliers, existing equipment mostly uses manual labor or robotic arms for loading and clamping. The manual method is inefficient, while using robotic arms for clamping is overkill and results in greater wear and tear, as well as higher equipment investment. For the traditional hardware manufacturing industry, whose profit margins are already low, such a high equipment investment is not very suitable. Moreover, its production efficiency is limited by the back-and-forth rotation and loading and clamping of the robotic arms, so the efficiency is not high either.

[0006] For mature hardware tools, the price is relatively low. Improving processing technology, enhancing product quality, and reducing processing costs are important goals for all manufacturers. This invention primarily provides a new machine tool that facilitates the sequential arrangement of clamp bodies, reduces processing steps, provides technical support for efficient production, and facilitates automated material feeding. Summary of the Invention

[0007] The purpose of this invention is to address the above problems by providing an automated integrated machining tool for the inner and outer cutting edges and square edges of pliers, which facilitates the machining of the inner and outer cutting edges and square edges of pliers, reduces clamping steps, increases speed and efficiency, and lowers processing costs.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an automated integrated machining tool for machining the inner and outer cutting edges and square edges of pliers, comprising a base, on which two sets of milling cutter assemblies are arranged side by side, namely a first milling cutter assembly and a second milling cutter assembly. The machining tool assembly of the first milling cutter assembly can tilt and swing, and its milling cutter spindle is vertically arranged and corresponds to the cutting edge of the pliers to be machined. The milling cutter spindle of the second milling cutter assembly is horizontally arranged, and the second milling cutter assembly is located after the first milling cutter assembly. The machining positions of the first and second milling cutter assemblies share a machining fixture, and the machining fixture realizes the automatic sequential movement of the two machining positions through a fixture base and a movable platform below the fixture base. The first milling cutter assembly includes: a first milling cutter frame mounted on the base, with a fan-shaped structure above the first milling cutter frame, and the front of the fan-shaped structure... The end face is provided with a fan-shaped sliding groove. At the center of the fan-shaped sliding groove on the front end face, a rotating shaft core connected to the rotating arm is provided. One end of the rotating arm is rotatably fitted onto the rotating shaft core, and the other end of the rotating arm is fixed to the bottom of the sliding seat. The upper end of the sliding seat is embedded into the sliding groove of the first milling cutter frame through a sliding card. A first milling cutter seat is movably connected to the sliding seat through a sliding seat groove. A first milling cutter motor and a matching drive mechanism are provided on the side of the first milling cutter seat. A first milling cutter is provided below the first milling cutter seat. The second milling cutter assembly includes: a fixed base set on the machine base, and a second milling cutter frame movably set on the fixed base. The milling cutter frame is controlled to move horizontally by a second feed motor set on the fixed base and a second lead screw. The second milling cutter assembly is provided with a second milling cutter seat that can move up and down, and a second milling cutter set thereon.

[0009] Furthermore, the sliding card of the first milling cutter assembly is an arc-shaped card corresponding to the fan-shaped sliding groove. The sliding groove is a protruding surface structure, and side stops are provided at the arc-shaped ends of both sides of the sliding groove to limit the continued rotation of the sliding seat.

[0010] Furthermore, the first milling cutter assembly has a milling cutter holder slider on the side wall of the first milling cutter holder, a first slide seat groove on the corresponding slide seat, a lead screw hole on the milling cutter holder slider, a first lead screw fitted inside the hole, and the first lead screw connected to the first feed motor on the slide seat.

[0011] Furthermore, the bottom of the second milling cutter frame of the second milling cutter assembly is embedded in the groove of the fixed base, and the lower end of the bottom is connected to a second lead screw, which is connected to a second feed motor provided on the side of the fixed base.

[0012] Furthermore, the second milling cutter holder is set in the second milling cutter frame with a U-shaped structure. Guide rails are respectively set on the hollow side walls of the U-shape, and sliders are fitted on the guide rails. Each slider is fixed on the side wall of the second milling cutter holder. The second milling cutter is fixed on the second milling cutter rod lying horizontally on the second milling cutter holder. A second milling cutter motor that drives the milling cutter to rotate is set above the second milling cutter holder.

[0013] Furthermore, a lifting motor is provided below the rear side of the second milling cutter holder, which is connected to the second milling cutter holder via a lifting rod.

[0014] Furthermore, the clamp seat is connected to a clamp seat drive, which is a hydraulic cylinder assembly, a pneumatic cylinder assembly, or an electric telescopic rod assembly.

[0015] Furthermore, the fixture base is provided in two sets, located in front of the first milling cutter frame and the second milling cutter frame respectively, and both sets of fixture bases are fixed on a platform that can move orthogonally in the XY plane. Both sets of fixture bases can move to two processing stations, and when one set moves to the processing station, the other set moves away.

[0016] Furthermore, the clamp holder is provided with a clamp fixing fixture for fixing the clamp body. Normally, the clamp body is fixed with the cutting edge facing upwards to correspond to the milling cutter being machined.

[0017] The beneficial effects of the present invention are as follows: The present invention provides an automated integrated machining tool for the inner and outer cutting edges and square edges of pliers, which facilitates the machining of the inner and outer cutting edges and square edges of pliers, reduces clamping steps, speeds up and increases efficiency, and reduces processing costs. In addition to clamping and unloading the pliers, multiple processing steps are performed sequentially to achieve automation.

[0018] 1. A specially designed rotatable first milling cutter assembly is used. The rotating arm drives the milling cutter to machine either the inner or outer cutting edge. By changing the stroke and left / right rotation, both cutting edges of the clamp can be machined simultaneously. When the first milling cutter assembly is on the left, it mills the inner cutting edge of the left clamp (short feed stroke), and immediately after, mills the outer cutting edge of the right clamp (long feed stroke). After completing the above machining, the first milling cutter assembly is rotated to the right, and then the inner cutting edge of the right clamp is milled (short feed stroke), and immediately after, the outer cutting edge of the left clamp is milled (long feed stroke). The feed stroke of the first milling cutter can be controlled by controlling the first feed motor. Thus, four machining operations are achieved in one clamping position.

[0019] 2. A specially designed feeding and discharging method enables cyclic feeding and discharging, resulting in short processing intervals and improved processing efficiency. The cyclic feeding and discharging processing method is included. Figures 10-11 , and specific implementation examples. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an existing pliers structure.

[0021] Figure 2 This is a schematic diagram of the existing pliers disassembly structure.

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the main structure of the present invention.

[0024] Figure 5 This is a schematic diagram of the left-side structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the right-side structure of the present invention.

[0026] Figure 7 This is an exploded view of the first milling cutter holder structure of the present invention.

[0027] Figure 8 This is an exploded view of the second milling cutter holder structure of the present invention.

[0028] Figure 9 for Figure 3 A schematic diagram showing the position of the clamp holder and its clamp fixing fixture.

[0029] Figure 10 This is a schematic diagram of the moving station of the fixture seat during the operation of the present invention - initial state.

[0030] Figure 11 This is a schematic diagram of the moving station of the fixture seat during the operation of this invention - in a cyclic state.

[0031] The text labels in the image represent: 8011, Left clamp body; 8012, Right clamp body; 81, Clamping head; 82, Clamping handle; 801, Grinding disc; 802, Outer cutting edge; 803, Inner cutting edge; 804, Square edge; 1. Machine base; 2. Platform; 3. Fixture base; 31. Fixture base drive; 32. Pliers fixing fixture; 4. First milling machine frame; 41. Sliding groove; 411. Side stop block; 412. Rotary shaft core; 42. Sliding seat; 421. First feed motor; 422. Sliding seat clip; 423. First sliding seat groove; 424. Rotating arm; 425. First lead screw; 43. First milling cutter holder; 431. Lead screw hole; 432. Milling cutter holder slider; 44. First milling cutter motor; 441. Drive wheel; 442. Driven wheel; 45. First milling cutter; 5. Second milling cutter frame; 51. Fixed base; 52. Second milling cutter holder; 521. Guide rail; 522. Slider; 523. Second milling cutter shank; 524. Second milling cutter; 53. Second milling cutter motor; 54. Lifting motor; 541. Lifting rod; 55. Second feed motor; 551. Second lead screw. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0033] like Figures 3-9 As shown, the specific structure of the present invention is as follows: a machine tool for automated integrated machining of the inner and outer cutting edges and square edges of pliers, comprising a base, on which two sets of milling cutter assemblies are arranged side by side, namely a first milling cutter assembly and a second milling cutter assembly. The machining tool assembly of the first milling cutter assembly can tilt and swing, and its milling cutter spindle is set vertically and corresponds to the cutting edge of the pliers to be machined. The milling cutter spindle of the second milling cutter assembly is set horizontally, and the second milling cutter assembly is set after the first milling cutter assembly. The machining positions of the first milling cutter assembly and the second milling cutter assembly share a machining fixture, and the machining fixture realizes the automatic sequential movement of the two machining positions through the fixture base 3 and the movable platform 2 below the fixture base 3.

[0034] See Figure 3 , Figure 7 The first milling cutter assembly includes: a first milling cutter frame 4 mounted on a base 1, the upper part of the first milling cutter frame 4 being configured with a fan-shaped structure, and a fan-shaped sliding groove 41 being provided on the front end face of the fan-shaped structure. A rotating shaft core 412 connected to a rotating arm 424 is provided at the center of the fan-shaped sliding groove on the front end face. One end of the rotating arm 424 is rotatably mounted on the rotating shaft core 412, and the other end of the rotating arm 424 is fixed to the bottom of a sliding seat 42. The upper end of the sliding seat 42 is embedded in the sliding groove of the first milling cutter frame 4 through a sliding card 425. A first milling cutter seat 43 is movably connected to the sliding seat 42 through a sliding seat groove 41. A first milling cutter motor 44 and a matching drive mechanism are provided on the side of the first milling cutter seat 43. A first milling cutter 45 is provided below the first milling cutter seat 43.

[0035] See Figure 3 , Figure 8The second milling cutter assembly includes: a fixed base 51 disposed on the base 1, and a second milling cutter frame 5 movably disposed on the fixed base 51. The milling cutter frame 5 is controlled to move horizontally by a second feed motor 55 disposed on the fixed base 51 and a second lead screw 551. The second milling cutter assembly is provided with a second milling cutter holder 52 that can move up and down, and a second milling cutter 524 disposed thereon.

[0036] Preferably, the sliding card 422 of the first milling cutter assembly is an arc-shaped card corresponding to the fan-shaped sliding groove 41. The sliding groove 41 is a protruding surface structure, and side stops 411 for limiting the continued rotation of the sliding seat 42 are provided at the arc-shaped ends of both sides of the sliding groove 41.

[0037] Preferably, the first milling cutter assembly has a milling cutter holder slider 432 on the side wall of the first milling cutter holder 43, and a first slide groove 423 on the corresponding slide seat 42. The milling cutter holder slider 432 has a lead screw hole 431, in which a first lead screw 425 is fitted. The first lead screw 425 is connected to a first feed motor 421 on the slide seat 41.

[0038] Preferably, the bottom of the second milling cutter frame 5 of the second milling cutter assembly is embedded in the groove of the fixed base 51, and the lower end of the bottom is connected to a second lead screw 551, which is connected to a second feed motor 53 provided on the side of the fixed base 51.

[0039] Preferably, the second milling cutter holder 52 is disposed in the second milling cutter frame 5 with a U-shaped structure. Guide rails 521 are respectively disposed on the hollow side wall of the U-shape, and sliders 522 are disposed on the guide rails 521. Each slider 522 is fixed on the side wall of the second milling cutter holder 52. The second milling cutter 524 is fixed on the second milling cutter rod 523 lying horizontally on the second milling cutter holder 524. A second milling cutter motor 53 for driving the milling cutter to rotate is disposed above the second milling cutter holder 52.

[0040] Preferably, a lifting motor 54 is provided below the rear side of the second milling cutter holder 52, which is connected to the second milling cutter holder 52 through a lifting rod 541.

[0041] Preferably, the clamp seat 3 is connected to a clamp seat drive 31, which is a hydraulic cylinder assembly, a pneumatic cylinder assembly, or an electric telescopic rod assembly.

[0042] Preferably, there are two sets of fixture seats, located in front of the first milling cutter frame 4 and the second milling cutter frame 5 respectively. Both sets of fixture seats 3 are fixed on the platform 2, which can move orthogonally in the XY plane. Both sets of fixture seats 3 can move to two processing stations, and when one set moves to the processing station, the other set moves away.

[0043] Preferably, the clamp base 3 is provided with a clamp fixing clamp 32 for fixing the clamp body.

[0044] join Figure 3 , Figure 4 , Figure 7 This invention features a specially designed rotatable first milling cutter assembly. A rotating arm 424 drives the milling cutter to machine either the inner or outer cutting edge. By changing the stroke and left / right rotation, both cutting edges of the pliers can be machined simultaneously. When the first milling cutter assembly is on the left, it mills the inner cutting edge of the left pliers (short feed stroke), and immediately afterward, mills the outer cutting edge of the right pliers (long feed stroke). After completing these machining operations, the first milling cutter assembly is rotated to the right, and then the inner cutting edge of the right pliers is milled (short feed stroke), and immediately afterward, the outer cutting edge of the left pliers (long feed stroke). The feed stroke of the first milling cutter can be controlled by controlling the first feed motor. Thus, four machining operations are achieved in one clamping position.

[0045] In addition, the present invention has specially designed a feeding and discharging method, which cyclically feeds and discharges materials, resulting in a short processing interval and improved processing efficiency.

[0046] Figure 9 China Figure 3 A schematic diagram showing the position of the clamp holder 3 and its clamp fixing fixture 32 fixing the clamp body. Regarding the clamp fixing fixture 31, there are various possible design methods, as long as it can maintain the machining surface corresponding to the milling cutter being processed. This is not the inventive point of this invention, nor does it affect the understanding and expression of the technical solution of the invention, and therefore will not be described here.

[0047] Participation in the recycling feeding and discharging processing method Figures 10-11 In specific use, such as Figure 10 The diagram shows the initial state of the moving station of the fixture seat 3 during operation of the present invention. First, material is loaded at the loading position in front of the first milling cutter frame 4, and then it moves to the first processing position to await processing. At this time, the other fixture seat 3 is at the material-retrieving position in front of the second milling cutter frame 5, and its next step is to move to the loading position for loading.

[0048] Then, by rotating the first milling cutter holder 43, the first milling cutter 45 is driven by the rotating arm 424 to perform machining on the inner or outer cutting edge. By changing the stroke and left / right rotation, both cutting edges of the pliers can be machined simultaneously. When the first milling cutter 45 is on the left side, the inner cutting edge of the left pliers is milled (short feed stroke), and immediately after completion, the outer cutting edge of the right pliers is milled (long feed stroke). After completing the above machining, the first milling cutter holder 43 and the first milling cutter 45 are rotated to the right side, and then the inner cutting edge of the right pliers is milled (short feed stroke), and immediately after completion, the outer cutting edge of the left pliers is milled (long feed stroke). The feed stroke of the first milling cutter can be controlled by controlling the first feed motor. In this way, four machining operations are achieved in one clamping position.

[0049] The sliding groove 41, the sliding block card 422, and the rotating shaft core 412 serve as movement limiters; while the side stop 411 is used to restrict the movement of the sliding block 42 on both sides and serves as a positioning reference.

[0050] After completing the above processing, the next step is to participate in... Figure 11 This is a schematic diagram of the moving station of the fixture seat 3 during operation of the present invention - in a cyclic state. When the first processing station is processing, the second fixture seat 4 moves to the loading position in front of the first milling cutter frame 4 to load the material; after the first processing station completes processing, the fixture seat 3 on it moves to the second processing position in front of the second milling cutter frame 5 to process, and at the same time, the other fixture seat 3 moves to the first processing position to process.

[0051] And so it goes.

[0052] This invention facilitates the machining of the inner and outer cutting edges and square edges of the pliers, reduces clamping steps, speeds up and increases efficiency while reducing processing costs. In addition to clamping and unloading the pliers, multiple processing steps are performed sequentially, achieving automation.

[0053] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A machine tool for automated integrated machining of the inner and outer cutting edges and square edges of pliers, comprising a machine base, characterized in that, Two sets of milling cutter assemblies are arranged side by side on the machine base, namely a first milling cutter assembly and a second milling cutter assembly. The machining tool assembly of the first milling cutter assembly can tilt and swing, and its milling cutter spindle is set vertically and corresponds to the cutting edge of the pliers to be machined. The milling cutter spindle of the second milling cutter assembly is set horizontally, and the second milling cutter assembly is set after the first milling cutter assembly. The machining positions of the first milling cutter assembly and the second milling cutter assembly share the machining fixture, and the machining fixture realizes the automatic sequential movement of the two machining positions through the fixture base and the movable platform below the fixture base. The first milling cutter assembly includes: a first milling cutter frame mounted on a base, the top of the first milling cutter frame having a fan-shaped structure, and a sliding groove of the fan-shaped structure being provided on the front end face of the fan-shaped structure. A rotating shaft core connected to a rotating arm is provided at the center of the fan-shaped sliding groove on the front end face. One end of the rotating arm is rotatably fitted onto the rotating shaft core, and the other end of the rotating arm is fixed to the bottom of a sliding seat. The upper end of the sliding seat is embedded into the sliding groove of the first milling cutter frame through a sliding card. A first milling cutter seat is movably connected to the sliding seat through a sliding seat groove. A first milling cutter motor and a matching drive mechanism are provided on the side of the first milling cutter seat. A first milling cutter is provided below the first milling cutter seat. The second milling cutter assembly includes: a fixed base mounted on a machine base, and a second milling cutter frame movably mounted on the fixed base. The milling cutter frame is controlled to move horizontally by a second feed motor mounted on the fixed base and a second lead screw. The second milling cutter assembly is provided with a second milling cutter holder that can move up and down, and a second milling cutter mounted thereon. The bottom of the second milling cutter frame of the second milling cutter assembly is embedded in the groove of the fixed base, and the bottom end is connected to the second lead screw, which is connected to the second feed motor provided on the side of the fixed base; The second milling cutter holder is set in the second milling cutter frame with a U-shaped structure. Guide rails are set on the hollow side walls of the U-shape, and sliders are set on the guide rails. Each slider is fixed on the side wall of the second milling cutter holder. The second milling cutter is fixed on the second milling cutter rod lying horizontally on the second milling cutter holder. A second milling cutter motor that drives the milling cutter to rotate is set above the second milling cutter holder.

2. The automatic integrated processing machine tool for the inner and outer blade edges and the square hole of pliers according to claim 1, characterized in that, The sliding card of the first milling cutter assembly is an arc-shaped card corresponding to the fan-shaped sliding groove. The sliding groove is a protruding surface structure, and side stops are provided at the arc-shaped ends of both sides of the sliding groove to limit the continued rotation of the sliding seat.

3. The automated integrated machining tool for machining the inner and outer cutting edges and square edges of pliers according to claim 2, characterized in that, The first milling cutter assembly has a milling cutter holder slider on the side wall of the first milling cutter holder, a first slide seat groove on the corresponding slide seat, a lead screw hole on the milling cutter holder slider, a first lead screw fitted inside the hole, and the first lead screw connected to a first feed motor on the slide seat.

4. The automatic integrated processing machine tool for inner and outer blade edges and square holes of pliers according to claim 1, characterized in that, A lifting motor is provided on the lower rear side of the second milling cutter holder, which is connected to the second milling cutter holder through a lifting rod.

5. The automatic integrated processing machine tool for inner and outer blade edges and square holes of pliers according to any one of claims 1-4, characterized in that, The clamp seat is connected to a clamp seat drive, which is a hydraulic cylinder assembly, a pneumatic cylinder assembly, or an electric telescopic rod assembly.

6. The automatic integrated processing machine tool for inner and outer blade edges and square holes of pliers according to any one of claims 1-4, characterized in that, The fixture base is provided in two sets, located in front of the first milling cutter frame and the second milling cutter frame respectively. Both sets of fixture bases are fixed on a platform that can move orthogonally in the XY plane. Both sets of fixture bases can move to two processing stations, and when one set moves to a processing station, the other set moves away.

7. A machine tool for automated integrated machining of the inner and outer cutting edges and square edges of pliers according to any one of claims 1-4, characterized in that, The clamp base is equipped with a clamp for fixing the pliers body.

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