Cutting device for screw machining

Abstract

The invention relates to the technical field of metal cutting, in particular to a screw machining cutting device which comprises a machine table, a transferring mechanism and a cutting mechanism. A carrying table is installed at the sliding end of the transferring mechanism, and a clamping mechanism used for fixing a workpiece to be machined is installed above the carrying table. Wherein the upper end of the carrying table is further provided with a positioning mechanism, the positioning mechanism is used for positioning the cutting vertical face of the to-be-machined workpiece, the to-be-machined workpiece is fixed through the clamping mechanism, and the positioning mechanism is used for accurately positioning the two horizontal faces of the head end of the hexagon bolt; afterwards, the transferring mechanism guides the workpiece to the cutting mechanism for grooving and cutting operation, through the reciprocating operation, the machining efficiency of the hexagon bolt with the groove is remarkably improved, it is guaranteed that the grooving position of the head end of the bolt is centered, and therefore the product quality is improved, the overall structural design is simple, operation is easy and convenient, and the machining efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal cutting, and particularly to a cutting device for screw processing. Background Art

[0002] With the rapid development of modern industry, screws, as basic fasteners, are increasingly widely used. Especially in the context of the growing non-standard demands, the market demand for slotted screws has increased significantly. Among them, hexagon bolts, as a common type of slotted screw, are designed with a groove cut at the head end to improve the installation convenience and fastening performance. The specific structure can be referred to in the Figure 1 illustrations of the specification drawings.

[0003] However, at present, the production method for cutting grooves at the hexagon head end mainly relies on manual positioning and manually moving the screws for cutting. Specifically, the operator needs to perform vertical cutting and grooving between the centers of the two horizontal planes of the hexagon surface. The process of manual positioning and manually moving the screws is cumbersome and time-consuming, and it is difficult to meet the requirements of large-scale and high-efficiency production. In addition, manual operation is easily affected by human factors, resulting in poor consistency of product quality and difficulty in meeting the requirements of high-end application scenarios.

[0004] In summary, in order to optimize the consistency and efficiency of the current cutting and grooving at the head end of hexagon bolts, we propose a cutting device for screw processing. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art such as the cumbersome process of manual positioning and manually moving the screws and the poor consistency of product quality, and to propose a cutting device for screw processing.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] Design a cutting device for screw processing, including:

[0008] A machine table and a transfer mechanism and a cutting mechanism installed on the machine table;

[0009] A carrier is installed on the sliding end of the transfer mechanism, and a clamping mechanism for fixing the workpiece to be processed is installed above the carrier;

[0010] Wherein a positioning mechanism is further installed at the upper end of the carrier, and the positioning mechanism is used to position the cutting vertical plane of the workpiece to be processed.

[0011] Further, the transfer mechanism is set as a lead screw module installed on the machine table;

[0012] The carrier is fixed on the sliding seat of the lead screw module.

[0013] Further, the clamping mechanism includes a fixed seat fixedly installed at the upper end of the stage;

[0014] A pipe fitting is fixedly installed in the inner hole of the fixed seat, and a plurality of clamping jaws are formed at the tail end of the pipe fitting. The outer walls of the plurality of clamping jaws form a frustum-shaped structure, and the workpiece to be processed is clamped between the plurality of clamping jaws.

[0015] Further, the clamping mechanism further includes:

[0016] A cylinder fixedly installed on the stage, a fixed block is fixedly connected to the shaft end of the cylinder, a tensioning seat is fixed to the side of the fixed block, and a through hole adapted to the outer wall of the pipe fitting is formed in the middle of the tensioning seat.

[0017] Further, the positioning mechanism includes a U-shaped rod slidably connected to the stage. An installation frame is fixedly installed at the upper end of the U-shaped rod. Elastic positioning components are arranged on both sides of the top of the installation frame. A first spring is fixedly connected between the bottom of the U-shaped rod and the stage.

[0018] Further, the elastic positioning component includes a positioning frame;

[0019] The positioning frame is slidably connected to the upper end of the installation frame through a guiding structure, and a compression spring is also installed between the inside of the positioning frame and the upper end of the installation frame. Guiding inclined surfaces are formed on the opposite surfaces of the two positioning frames.

[0020] Further, a guiding wheel is rotatably connected to the bottom of the U-shaped rod, and a wedge-shaped block for driving the guiding wheel to move upward is fixed to the side of the transfer mechanism.

[0021] Further, a blanking mechanism is further included;

[0022] The blanking mechanism includes a ejector rod slidably arranged on the upper end of the stage through a bracket. A second spring is fixedly connected between the ejector rod and the bracket. A wedge-shaped plate is connected to the side of the transfer mechanism through a fixed rod, and the side of the ejector rod slides along the inclined surface of the wedge-shaped plate.

[0023] Further, the cutting mechanism includes a sliding seat slidably arranged on the machine table. A driving member is fixedly installed at the bottom of the sliding seat. The shaft end of the driving member penetrates and extends to the upper end of the sliding seat. A cutting disc is fixedly installed at the shaft end of the driving member;

[0024] An adjusting screw is threadedly connected to the side of the machine table, and the end of the adjusting screw is rotatably connected to the side of the sliding seat.

[0025] Further, the machine platform is sequentially arranged as a loading station, a processing station, and an unloading station along the moving direction of the transfer mechanism, and a collection box is also installed near the unloading station of the machine platform.

[0026] A cutting device for screw processing proposed by the present invention has the beneficial effects that: the present invention fixes the workpiece to be processed through the clamping mechanism, and uses the positioning mechanism to accurately position the two horizontal planes at the head end of the hexagon bolt; subsequently, the transfer mechanism guides the workpiece to the cutting mechanism for grooving and slotting operations. This reciprocating operation not only significantly improves the processing efficiency of the slotted hexagon bolt, but also ensures the centering of the slotting position at the head end of the bolt, thereby improving the product quality. The overall structure design is simple and the operation is convenient, further enhancing the processing efficiency. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the grooved bolt to be processed;

[0028] Figure 2 It is a perspective view of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the cutting mechanism of the present invention when the protective cover is removed;

[0030] Figure 4 It is a schematic structural diagram of the transfer mechanism of the present invention;

[0031] Figure 5 For Figure 4 The enlarged structural diagram of area A;

[0032] Figure 6 It is a schematic structural diagram of the clamping mechanism of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the positioning mechanism of the present invention;

[0034] Figure 8 It is a schematic structural diagram of the ejecting mechanism of the present invention;

[0035] Figure 9 It is a state diagram when the bolt to be processed is positioned;

[0036] Figure 10 It is a schematic structural diagram of the cutting mechanism of the present invention;

[0037] Figure 11 It is a schematic structural diagram of the machine platform of the present invention.

[0038] In the figure: 1. Machine platform; 11. Loading station; 12. Processing station; 13. Unloading station; 14. Collection box; 2. Transfer mechanism; 3. Cutting mechanism; 31. Slide base; 32. Driving part; 33. Cutting disc; 34. Adjusting screw; 4. Carrier; 5. Clamping mechanism; 50. Fixed seat; 51. Pipe fitting; 52. Jaw; 53. Cylinder; 54. Fixed block; 55. Tensioning seat; 6. Positioning mechanism; 61. U-shaped rod; 62. Mounting bracket; 63. Elastic positioning component; 631. Positioning frame; 632. Guide structure; 633. Compression spring; 634. Guiding inclined surface; 64. First spring; 65. Guide wheel; 66. Wedge block; 7. Pushing mechanism; 71. Bracket; 72. Pushing rod; 73. Second spring; 74. Wedge plate. Detailed implementation manners

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] Refer to Figure 2-11 For an embodiment of the present invention, it discloses a cutting device for screw processing. Specifically, this device is used to solve the problems of low processing efficiency and inaccurate positioning of the cutting position of the hexagonal head end when processing the hexagonal head end of a hexagonal bolt at present.

[0041] Refer to Figure 2 , Figure 3 , specifically, this device includes a machine platform 1 and a transfer mechanism 2 and a cutting mechanism 3 installed on the machine platform 1. The machine platform 1 is a frame structure composed of multiple cross bars and longitudinal bars. Of course, in order to adjust its levelness, four adjusting feet can be matrix-installed at the bottom of the machine platform 1;

[0042] A carrier 4 is installed on the sliding end of the transfer mechanism 2, and a clamping mechanism 5 for fixing the workpiece to be processed is installed above the carrier 4; a positioning mechanism 6 is also installed at the upper end of the carrier 4, and the positioning mechanism 6 is used to position the cutting vertical plane of the workpiece to be processed.

[0043] That is to say, in the present invention, after the clamping mechanism 5 is used to clamp and fix the workpiece to be processed, the positioning mechanism 6 can be used to position the two horizontal planes of the hexagonal bolt head end, and then the transfer mechanism 2 is used to drive it to move towards the cutting mechanism 3 to realize grooving and cutting. In this way, the processing efficiency of the grooved hexagonal bolt is greatly improved.

[0044] Refer to Figure 4, in some embodiments, the transfer mechanism 2 in the present invention is provided as a lead screw module installed on the machine table 1; the carrier 4 is fixed on the sliding seat of the lead screw module. Of course, the lead screw module is driven by a motor, and its specific structure and working principle are conventional means for those skilled in the art, so no further elaboration will be made here.

[0045] Furthermore, the clamping mechanism 5 in the present invention includes a fixed seat 50 fixedly installed at the upper end of the carrier 4;

[0046] Refer to Figure 5 , Figure 6 , a pipe fitting 51 is fixedly installed in the inner hole of the fixed seat 50. Preferably, in the present invention, the outer side of the pipe fitting 51 has a flange portion, and the pipe fitting 51 is fixed to the above-mentioned fixed seat 50 through this flange portion and bolts. Such a design is to achieve convenient replacement of the pipe fitting 51. When clamping different screws, different inner diameter pipe fittings 51 can be adaptively replaced according to the diameter of the screw to optimize the applicability to different workpieces. A plurality of clamping jaws 52 are formed at the tail end of the pipe fitting 51, and the outer walls of the plurality of clamping jaws 52 form a frustum-shaped structure, and the workpiece to be processed is clamped between the plurality of clamping jaws 52.

[0047] It should be noted that the center of the pipe fitting 51 in the present invention should be in the same plane as the cutting center of the cutting mechanism 3. In this way, after the plurality of clamping jaws 52 concentrically clamp the column end of the screw, it can be ensured that the cutting mechanism 3 subsequently cuts the center of the head end of the screw;

[0048] At this time, the clamping jaws 52 and the pipe fitting 51 in the present invention are integrally formed, and the plurality of clamping jaws 52 are circumferentially distributed to achieve central clamping of the column end of the screw, so as to ensure that the central positions of the screws are consistent after clamping and fixing during continuous processing, thereby improving product quality.

[0049] Refer to Figure 6 , on the basis of the above embodiments, the clamping mechanism 5 in the present invention further includes:

[0050] A cylinder 53 fixedly installed on the carrier 4, a fixed block 54 is fixedly connected to the shaft end of the cylinder 53, a tensioning seat 55 is fixed to the side of the fixed block 54, and a through hole adapted to the outer wall of the pipe fitting 51 is provided in the middle of the tensioning seat 55.

[0051] That is to say, during the specific feeding stage, first insert the column end of the hexagon bolt to be processed into the interior of the pipe fitting 51. At this time, the cylinder 53 can be activated, and the shaft end of the cylinder 53 moves inward and retracts. The tension seat 55 is pulled backward through the fixed block 54. Since the through hole of the tension seat 55 slides on the outer side of the pipe fitting 51, when it moves backward, its rear end will abut against a plurality of clamping jaws 52 to synchronously contract inward. By means of the clamping force generated by the synchronous contraction of the plurality of clamping jaws 52, the central clamping and fixing of the screw can be achieved.

[0052] Refer to Figure 5 、 Figure 7 In some embodiments, the positioning mechanism 6 in the present invention includes a U-shaped rod 61 slidably connected to the carrier 4. An installation frame 62 is fixedly installed at the upper end of the U-shaped rod 61. The installation frame 62 has a U-shaped structure. Elastic positioning components 63 are provided on both sides of the top of the installation frame 62. The two elastic positioning components 63 are arranged oppositely to position the two parallel sides of the hexagon bolt. A first spring 64 is fixedly connected between the bottom of the U-shaped rod 61 and the carrier 4.

[0053] Refer to Figure 7 Based on the above embodiments, the elastic positioning component 63 in the present invention includes a positioning frame 631. The positioning frame 631 has a rectangular frame structure. The positioning frame 631 is slidably connected to the upper end of the installation frame 62 through a guiding structure 632. Preferably, the guiding structure 632 in this embodiment includes two sliding grooves opened on the outer side of the positioning frame 631. Two guiding pins are fixed on the side of the top of the installation frame 62. The two guiding pins are slidably connected in the two sliding grooves, thus completing the sliding guidance of the positioning frame 631.

[0054] A compression spring 633 is further installed between the interior of the positioning frame 631 and the upper end of the installation frame 62. Guide inclined surfaces 634 are formed on the opposite surfaces of the two positioning frames 631. The guide inclined surfaces 634 are provided to facilitate the adaptation to the ends of hexagon bolts with different widths. The compression spring 633 provides the contraction and reset force of the positioning frame 631, thus facilitating the reset of the positioning frame 631 in subsequent operations.

[0055] Refer to Figure 7 Furthermore, in this embodiment, a guide wheel 65 is rotatably connected to the bottom of the U-shaped rod 61. A wedge block 66 for driving the guide wheel 65 to move upward is fixed to the side of the transfer mechanism 2.

[0056] Specifically, when the carrier 4 is at the loading station 11, at this time, the guide wheel 65 slides and abuts against the upper end of the wedge block 66. At this time, the guide wheel 65 pushes the mounting bracket 62 upward through the U-shaped rod 61 until the two elastic positioning components 63 are located on both sides of the pipe fitting 51;

[0057] Refer to Figure 9 , when loading the screw, first insert the column end of the screw into the inner side of the pipe fitting 51, and insert its hexagonal head end between the two elastic positioning components 63. As Figure 9 shown, where the shaded part represents the loaded screw. When the head end of the screw is inserted, it will push the two positioning frames 631 to move outward through the guiding inclined surface 634. During this process, the two horizontal planes of the hexagonal head end should be kept in contact with the front plane of the positioning frame 631, so as to complete the positioning of the cutting surface of the hexagonal bolt head end;

[0058] After the positioning is completed, the rod end of the screw is centrally clamped and fixed by the clamping mechanism 5 described above. Then, the transfer mechanism 2 drives the carrier 4 to move towards the processing station 12. During this process, the guide wheel 65 will gradually disengage from the wedge block 66. At this time, under the push of the first spring 64, the U-shaped rod 61 moves downward, so as to control the two elastic positioning components 63 to move downward and separate from the head end of the screw, so as to avoid interference during the cutting of the screw head end.

[0059] Refer to Figure 8 , in a preferred embodiment, a blanking mechanism 7 is further included;

[0060] The blanking mechanism 7 includes a ejector rod 72 that slides on the upper end of the carrier 4 through a bracket 71. A second spring 73 is fixedly connected between the ejector rod 72 and the bracket 71. A wedge-shaped plate 74 is connected to the side of the transfer mechanism 2 through a fixed rod. The side of the ejector rod 72 slides along the inclined surface of the wedge-shaped plate 74. Specifically, the ejector rod 72 described in this embodiment is also set as a U-shaped rod. Of course, a guide wheel can also be rotatably connected to the middle of the U-shaped rod. Such a setting can reduce the contact friction between the U-shaped rod and the wedge-shaped plate 74 to achieve the purpose of conveniently driving the ejector rod 72. At this time, it should be noted that when the ejector rod 72 is set as a U-shaped rod, its upper end should be concentric with the pipe fitting 51. In this way, when the ejector rod 72 is inserted into the pipe fitting 51, the processed screw in the pipe fitting 51 can be ejected outward to realize automatic blanking.

[0061] That is, the blanking mechanism 7 provided in the present invention is used to realize the automatic blanking of the processed screw, so as to further improve the operation efficiency of the screw head end grooving.

[0062] Refer to Figure 8, specifically, after the transfer mechanism 2 drives the screw to pass through the cutting mechanism 3 for cutting, it will enter the blanking station 13. During this process, the side of the ejector rod 72 will gradually contact the inclined surface of the wedge plate 74. In this way, the entire ejector rod 72 will move towards the side of the pipe fitting 51. At this time, the shaft end of the cylinder 53 should extend forward to ensure that the multiple jaws 52 release the clamping of the screw. Therefore, when ejecting the material, the screw is in a free state. When the ejector rod 72 moves further and penetrates into the interior of the pipe fitting 51, it can eject the processed screw out of the pipe fitting 51 to achieve automatic blanking. After that, the transfer mechanism 2 drives the carrier 4 to reset and reload new hex bolts again. In this way, continuous processing operations of hex bolts can be realized.

[0063] Referring to Figure 10 , in some embodiments, the cutting mechanism 3 in the present invention includes a sliding seat 31 slidably mounted on the machine table 1. A driving member 32 is fixedly installed at the bottom of the sliding seat 31. The shaft end of the driving member 32 penetrates and extends to the upper end of the sliding seat 31. A cutting disc 33 is fixedly installed on the shaft end of the driving member 32. It should be noted that the cutting width of the head end of the hex bolt in the present invention is limited by the cutting disc 33. Therefore, different cutting discs 33 can be replaced according to different groove width requirements. Of course, in order to ensure the consistency of the cutting groove center, when replacing different cutting discs 33, their center plane positions should also be kept the same;

[0064] In addition, considering that the cutting depths of the head ends of different bolts are different, the position of the cutting disc 33 also needs to be adjusted. In this embodiment, an adjusting screw 34 is threadedly connected to the side of the machine table 1, and the end of the adjusting screw 34 is rotatably connected to the side of the sliding seat 31.

[0065] That is to say, when it is necessary to change the cutting depth of the head end of the screw, the above-mentioned adjusting screw 34 can be rotated to drive the sliding seat 31 to move, so as to change the front-back distance of the cutting disc 33 relative to the transfer mechanism 2. In addition, in the present invention, a protective cover is further installed above the sliding seat 31. The protective cover is sleeved outside the cutting disc 33 and has an opening at the front end. The purpose of using the protective cover is to protect the cutting disc 33 during operation to avoid waste chips from splashing.

[0066] Referring to Figure 11 , further, the machine table 1 in the present invention is sequentially provided with a loading station 11, a processing station 12, and a blanking station 13 along the movement direction of the transfer mechanism 2. Of course, the processing station 12 in the present invention is the processing position of the cutting mechanism 3. A collection box 14 is also installed near the blanking station 13 of the machine table 1. The collection box 14 is used to centrally collect the processed screws to improve the convenience of processing.

[0067] In summary, the present invention fixes the workpiece to be processed through the clamping mechanism 5, and uses the positioning mechanism 6 to accurately position the two horizontal planes at the head end of the hexagon bolt. Subsequently, the transfer mechanism 2 guides the workpiece to the cutting mechanism 3 for grooving operation. This reciprocating operation not only significantly improves the processing efficiency of the grooved hexagon bolt, but also ensures the centering of the grooving position at the head end of the bolt, thereby improving the product quality. The overall structure design is simple and the operation is convenient, further enhancing the processing efficiency.

[0068] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A cutting device for screw processing, characterized in that: include: A machine platform (1), and a transfer mechanism (2) and a cutting mechanism (3) mounted on the machine platform (1); A carrier (4) is installed on the sliding end of the transfer mechanism (2), and a clamping mechanism (5) for fixing the workpiece to be processed is installed above the carrier (4); A positioning mechanism (6) is also installed at the upper end of the carrier (4), and the positioning mechanism (6) is used to position the cutting vertical surface of the workpiece to be processed.

2. A screw cutting device according to claim 1, characterized in that: The transfer mechanism (2) is configured as a lead screw module installed on the machine platform (1); The carrier (4) is fixed on the sliding seat of the lead screw module.

3. A screw cutting device according to claim 1, characterized in that: The clamping mechanism (5) comprises a fixing seat (50) fixedly mounted on the upper end of the carrier (4); A pipe fitting (51) is fixedly installed in the inner hole of the fixing seat (50), and a plurality of clamping claws (52) are formed on the tail end of the pipe fitting (51). The outer walls of the plurality of clamping claws (52) form a frustum-shaped structure, and the workpiece to be processed is clamped between the plurality of clamping claws (52).

4. A screw cutting device according to claim 3, characterized in that: The clamping mechanism (5) further comprises: A cylinder (53) is fixedly mounted on the carrier (4), a fixed block (54) is fixedly connected to the axial end of the cylinder (53), a tensioning seat (55) is fixed to the side of the fixed block (54), and a through hole is provided in the middle portion of the tensioning seat (55) to fit the outer wall of the pipe (51).

5. A screw cutting device according to claim 1, characterized in that: The positioning mechanism (6) comprises a U-shaped rod (61) slidably connected to the carrier (4); a mounting frame (62) is fixedly mounted on the upper end of the U-shaped rod (61); elastic positioning components (63) are arranged on both sides of the top of the mounting frame (62); and a first spring (64) is fixedly connected between the bottom of the U-shaped rod (61) and the carrier (4).

6. A screw cutting device according to claim 5, characterized in that: The elastic positioning component (63) comprises a positioning frame (631); The positioning frame (631) is slidably connected to the upper end of the mounting frame (62) via a guide structure (632), and a compression spring (633) is installed between the interior of the positioning frame (631) and the upper end of the mounting frame (62), wherein guiding inclined surfaces (634) are formed on the opposite surfaces of the two positioning frames (631).

7. A screw cutting device according to claim 5, characterized in that: The bottom of the U-shaped rod (61) is rotatably connected to a guide wheel (65), and a wedge block (66) for driving the guide wheel (65) to move upward is fixed on the side of the transfer mechanism (2).

8. A screw cutting device according to claim 1, characterized in that: It also includes a material ejection mechanism (7); The ejecting mechanism (7) comprises an ejector rod (72) which slides on the upper end of the carrier (4) via a bracket (71); a second spring (73) is fixedly connected between the ejector rod (72) and the bracket (71); the side edge of the transfer mechanism (2) is also connected to a wedge plate (74) via a fixed rod; the side edge of the ejector rod (72) slides in contact with the inclined surface of the wedge plate (74).

9. A screw cutting device according to claim 1, characterized in that: The cutting mechanism (3) comprises a slide seat (31) sliding on the machine platform (1), a driving member (32) is fixedly mounted on the bottom of the slide seat (31), an axial end of the driving member (32) passes through and extends to the upper end of the slide seat (31), wherein a cutting disc (33) is fixedly mounted on the axial end of the driving member (32); The side of the machine platform (1) is threadedly connected with an adjusting screw (34), and the end of the adjusting screw (34) is rotatably connected to the side of the slide seat (31).

10. A screw cutting device according to any one of claims 1 to 9, characterized in that: The machine platform (1) is sequentially arranged as a loading station (11), a processing station (12) and a unloading station (13) along the movement direction of the transfer mechanism (2); and a collecting frame (14) is also installed on the machine platform (1) near the unloading station (13).

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