Cutting device for screw processing

Abstract

The present invention relates to the field of metal cutting technology, and in particular to a cutting device for screw processing, comprising: a machine platform and a transfer mechanism and a cutting mechanism installed on the machine platform; 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; a positioning mechanism is also installed on the upper end of the carrier, and the positioning mechanism is used to position the cutting vertical surface of the workpiece to be processed. The present invention fixes the workpiece to be processed by the clamping mechanism, and uses the positioning mechanism to accurately position the two horizontal surfaces of the hexagonal bolt head end; then, the transfer mechanism guides the workpiece to the cutting mechanism for grooving and grooving operations. This reciprocating operation not only significantly improves the processing efficiency of the slotted hexagonal bolts, but also ensures the centering of the slot position of the bolt head end, thereby improving product quality. The overall structural design is simple and easy to operate, which further enhances the processing efficiency.

Description

Technical Field

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

[0002] With the rapid development of modern industry, screws, as basic fasteners, are increasingly used in a wide range of applications. In particular, with the growing demand for non-standard products, the market demand for slotted screws has increased significantly. Hexagonal bolts are a common type of slotted screws. The design of the slot at the head end is intended to improve installation convenience and fastening performance. For specific structure, please refer to the attached figure of the specification. Figure 1 shown.

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

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

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

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

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

[0008] Machine platform and transfer mechanism and cutting mechanism installed on the machine platform;

[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] A positioning mechanism is also installed on the upper end of the carrier, and the positioning mechanism is used to position the cutting vertical surface of the workpiece to be processed.

[0011] Furthermore, the transfer mechanism is configured as a lead screw module mounted on the machine platform;

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

[0013] Furthermore, the clamping mechanism includes a fixing seat fixedly mounted on the upper end of the carrier;

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

[0015] Furthermore, the clamping mechanism further includes:

[0016] A cylinder is fixedly mounted on the carrier, a fixing block is fixedly connected to the axial end of the cylinder, a tensioning seat is fixed to the side of the fixing block, and a through hole is provided in the middle of the tensioning seat to fit the outer wall of the pipe.

[0017] Furthermore, the positioning mechanism includes a U-shaped rod slidably connected to the carrier, a mounting frame is fixedly installed on the upper end of the U-shaped rod, elastic positioning components are provided on both sides of the top of the mounting frame, and a first spring is fixedly connected between the bottom of the U-shaped rod and the carrier.

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

[0019] The positioning frame is slidably connected to the upper end of the mounting frame through a guide structure. A compression spring is installed between the interior of the positioning frame and the upper end of the mounting frame. Guide slopes are also formed on the opposite surfaces of the two positioning frames.

[0020] Furthermore, the bottom of the U-shaped rod is rotatably connected to a guide wheel, and a wedge block is fixed to the side of the transfer mechanism to drive the guide wheel to move upward.

[0021] Furthermore, it also includes a material ejection mechanism;

[0022] The ejecting mechanism includes an ejector rod that slides on the upper end of the carrier through a bracket, and a second spring is fixedly connected between the ejector rod and the bracket, wherein the side of the transfer mechanism is also connected to a wedge plate through a fixed rod, and the side of the ejector rod slides in contact with the inclined surface of the wedge plate.

[0023] Furthermore, the cutting mechanism includes a slide that slides on the machine table, a driving member is fixedly installed on the bottom of the slide, the shaft end of the driving member passes through and extends to the upper end of the slide, and a cutting disc is fixedly installed on the shaft end of the driving member;

[0024] The side of the machine platform is threadedly connected with an adjusting screw, and the end of the adjusting screw is rotatably connected to the side of the slide.

[0025] Furthermore, the machine is sequentially arranged as a loading station, a processing station and an unloading station along the movement direction of the transfer mechanism, and a collection frame is also installed on the machine near the unloading station.

[0026] The present invention proposes a cutting device for screw processing, which has the following beneficial effects: the present invention fixes the workpiece to be processed by a clamping mechanism, and uses a positioning mechanism to accurately position the two horizontal surfaces of the hexagonal bolt head end; then, the transfer mechanism guides the workpiece to the cutting mechanism for grooving and cutting operations. This reciprocating operation not only significantly improves the processing efficiency of the slotted hexagonal bolts, but also ensures the centering of the slot position of the bolt head end, thereby improving product quality. The overall structural design is simple and easy to operate, which further enhances the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the slotted bolt structure to be processed;

[0028] Figure 2 A perspective view of the present invention;

[0029] Figure 3 This 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 Schematic diagram of the enlarged structure 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 This is the 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 diagram of the machine structure of the present invention.

[0038] In the figure: 1. Machine table; 11. Loading station; 12. Processing station; 13. Unloading station; 14. Collection frame; 2. Transfer mechanism; 3. Cutting mechanism; 31. Slide; 32. Driving member; 33. Cutting disc; 34. Adjusting screw; 4. Carrying platform; 5. Clamping mechanism; 50. Fixed seat; 51. Pipe fitting; 52. Clamping jaw; 53. Cylinder; 54. Fixed block; 55. Tensioning seat; 6. Positioning mechanism; 61. U-shaped rod; 62. Mounting frame; 63. Elastic positioning assembly; 631. Positioning frame; 632. Guide structure; 633. Compression spring; 634. Guide slope; 64. First spring; 65. Guide wheel; 66. Wedge block; 7. Ejecting mechanism; 71. Bracket; 72. Ejector rod; 73. Second spring; 74. Wedge plate. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Reference Figure 2-11 An embodiment of the present invention discloses a cutting device for screw processing. Specifically, the device is used to solve the current problems of low processing efficiency and inaccurate cutting position positioning of the hexagonal head end when grooving the hexagonal head end of the hexagonal bolt.

[0041] Reference Figure 2 、 Figure 3 Specifically, the 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 horizontal bars and vertical bars. Of course, in order to adjust its level, four adjustable feet can be installed in a matrix 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 on 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.

[0043] That is to say, after the clamping mechanism 5 provided in the present invention is used to clamp and fix the workpiece to be processed, the two horizontal surfaces of the head end of the hexagonal bolt can be positioned by the positioning mechanism 6 provided, and then the transferring mechanism 2 drives it toward the cutting mechanism 3 to realize grooving. This reciprocating process greatly improves the processing efficiency of the slotted hexagonal bolts.

[0044] Reference Figure 4In some embodiments, the transfer mechanism 2 in the present invention is configured as a screw module installed on the machine 1; the carrier 4 is fixed on the sliding seat of the screw module. Of course, the screw module is driven by a motor. Its specific structure and working principle are conventional means for technical personnel in the relevant field, and will not be elaborated here.

[0045] Furthermore, the clamping mechanism 5 of the present invention includes a fixing base 50 fixedly mounted on the upper end of the carrier 4;

[0046] Reference Figure 5 、 Figure 6 A pipe fitting 51 is fixedly installed in the inner hole of the fixing seat 50. Preferably, the outer side of the pipe fitting 51 in the present invention has a flange portion, and the pipe fitting 51 is fixed to the above-mentioned fixing seat 50 through the flange portion and bolts. This design is to achieve convenient replacement of the pipe fitting 51, so that when used to clamp different screws, pipe fittings 51 with different inner diameters can be replaced according to the diameter of the screws to optimize the applicability to different workpieces. A plurality of clamping jaws 52 are formed on 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 51 described in the present invention should be in the same plane as the cutting center of the cutting mechanism 3. In this way, when the plurality of clamping jaws 52 concentrically clamp the column end of the screw, it can be ensured that the subsequent cutting mechanism 3 cuts the center of the head end of the screw.

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

[0049] Reference Figure 6 On the basis of the above embodiment, the clamping mechanism 5 of the present invention further includes:

[0050] A cylinder 53 is fixedly mounted on the carrier 4 , and a fixing block 54 is fixedly connected to the axial end of the cylinder 53 . A tensioning seat 55 is fixed to the side of the fixing block 54 . The middle portion of the tensioning seat 55 has a through hole adapted to the outer wall of the pipe 51 .

[0051] That is to say, during the specific loading stage, the column end of the hexagonal bolt to be processed is first inserted into the inside of the pipe 51. At this time, the cylinder 53 can be turned on, and the axial end of the cylinder 53 can be retracted inward, and the tensioning seat 55 can be pulled backward through the fixed block 54. Since the through hole of the tensioning seat 55 slides on the outside of the pipe 51, its rear end will resist the multiple clamping jaws 52 and retract synchronously when it moves backward. With the help of the clamping force of the synchronous retraction of the multiple clamping jaws 52, the center clamping and fixation of the screw can be achieved.

[0052] Reference 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, and a mounting bracket 62 is fixedly installed on the upper end of the U-shaped rod 61. The mounting bracket 62 has a U-shaped structure, and elastic positioning components 63 are provided on both sides of the top of the mounting bracket 62. The two elastic positioning components 63 are arranged opposite to each other for positioning the two parallel sides of the hexagonal bolt, and a first spring 64 is fixedly connected between the bottom of the U-shaped rod 61 and the carrier 4.

[0053] Reference Figure 7 On the basis of the above embodiment, the elastic positioning assembly 63 of the present invention includes a positioning frame 631, and the positioning frame 631 is a rectangular frame structure. The positioning frame 631 is slidably connected to the upper end of the mounting frame 62 through a guide structure 632. Preferably, the guide structure 632 described in this embodiment includes two slide grooves provided on the outer side of the positioning frame 631, and two guide pins are fixed on the top side of the mounting frame 62. The two guide pins are slidably connected to the two slide grooves, thereby completing the sliding guidance of the positioning frame 631;

[0054] A compression spring 633 is also installed between the interior of the positioning frame 631 and the upper end of the mounting frame 62, and guide slopes 634 are formed on the opposite surfaces of the two positioning frames 631. The guide slopes 634 are provided to facilitate the adaptation of the ends of hexagonal bolts of different widths. The compression spring 633 provides the contraction and reset force of the positioning frame 631, which facilitates the reset of the positioning frame 631 in subsequent actions.

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

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

[0057] Reference Figure 9 When loading the screw, first insert the column end of the screw into the inner side of the pipe 51, and insert the hexagonal head end of the screw between the two elastic positioning components 63, as shown in FIG. Figure 9 As shown, the shaded portion represents the screw to be transferred. When the screw head is inserted, it will move outward against the two positioning frames 631 through the guiding inclined surface 634. During this process, the two horizontal surfaces of the hexagonal head should be kept in contact with the front surface of the positioning frame 631. In this way, the cutting surface of the hexagonal bolt head can be positioned.

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

[0059] Reference Figure 8 In a preferred embodiment, it further includes a material ejecting mechanism 7;

[0060] The lifting mechanism 7 includes a lifting rod 72 that slides on the upper end of the carrier 4 through a bracket 71, and a second spring 73 is fixedly connected between the lifting rod 72 and the bracket 71, wherein the side of the transfer mechanism 2 is also connected to a wedge plate 74 through a fixed rod, and the side of the lifting rod 72 slides along the inclined surface of the wedge plate 74. Specifically, it is explained that the lifting rod 72 described in this embodiment is also set as a U-shaped rod. Of course, a guide wheel can be rotatably connected to the middle part of the U-shaped rod. Such a setting can reduce the contact friction between the U-shaped rod and the wedge plate 74, so as to achieve the purpose of convenient driving of the lifting rod 72. It should be explained at this time that when the lifting rod 72 is set as a U-shaped rod, its upper end should be set concentrically with the pipe fitting 51. In this way, when the lifting rod 72 is inserted into the interior of the pipe fitting 51, the screws processed in the pipe fitting 51 can be pushed out to achieve automatic unloading.

[0061] That is, the ejecting mechanism 7 provided in the present invention is used to realize automatic unloading of the screws after processing, thereby further improving the operational efficiency of slotting the screw head end.

[0062] Reference Figure 8Specifically, when the transfer mechanism 2 drives the screw to pass through the cutting mechanism 3 for cutting, it will enter the unloading station 13. During this process, the side of the push rod 72 will gradually contact the inclined surface of the wedge plate 74, so that the entire push rod 72 will move toward one side of the pipe fitting 51. At this time, the axial end of the cylinder 53 should extend forward to ensure that the multiple clamps 52 are disengaged from the screw. Therefore, when unloading, the screw is in a free state. When the push rod 72 moves further, it will penetrate into the interior of the pipe fitting 51, and the processed screw in the pipe fitting 51 can be ejected outward to realize automatic unloading. After that, the transfer mechanism 2 drives the carrier 4 to reset and load new hexagonal bolts again. This reciprocating process can realize continuous processing of hexagonal bolts.

[0063] Reference Figure 10 In some embodiments, the cutting mechanism 3 of the present invention includes a slide 31 that slides on the machine table 1, and a driving member 32 is fixedly installed at the bottom of the slide 31. The axial end of the driving member 32 passes through and extends to the upper end of the slide 31, wherein a cutting disc 33 is fixedly installed on the axial end of the driving member 32. It should be noted that the cutting width of the hexagonal bolt head end 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 straightness of the cutting groove center, when replacing different cutting discs 33, the center plane position 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 disk 33 should also be adjusted. In this embodiment, the side thread connection of the machine 1 is provided with an adjusting screw 34, and the end of the adjusting screw 34 is rotatably connected to the side of the slide 31.

[0065] That is to say, when it is necessary to change the cutting depth of the screw head end, the above-mentioned adjusting screw 34 can be rotated to drive the slide 31 to move, so that the front and rear distance of the cutting disk 33 relative to the transfer mechanism 2 can be changed. In addition, a protective cover is also installed above the slide 31 in the present invention. The protective cover is mounted on the outside of the cutting disk 33 and has an open front end. The purpose of using the protective cover is to protect the cutting disk 33 during operation to avoid waste chips from splashing.

[0066] Reference Figure 11 Furthermore, the machine 1 in the present invention 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. Of course, the processing station 12 in the present invention is the processing position of the cutting mechanism 3. The machine 1 is also equipped with a collection frame 14 near the unloading station 13. The collection frame 14 is used to collect the screws after processing to improve the convenience of processing.

[0067] In summary, the present invention fixes the workpiece to be processed by the clamping mechanism 5, and uses the positioning mechanism 6 to accurately position the two horizontal surfaces of the hexagonal bolt head end; then, the transfer mechanism 2 guides the workpiece to the cutting mechanism 3 for grooving and cutting operations. This reciprocating operation not only significantly improves the processing efficiency of the slotted hexagonal bolts, but also ensures the centering of the slot position of the bolt head end, thereby improving product quality. The overall structural design is simple and easy to operate, which further enhances the processing efficiency.

[0068] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A cutting device for screw processing, characterized in that: include: A machine (1), a transfer mechanism (2) and a cutting mechanism (3) mounted on the machine (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 further 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, and the positioning mechanism (6) includes a U-shaped rod (61) slidably connected to the carrier (4), a mounting frame (62) is fixedly installed at the upper end of the U-shaped rod (61), and elastic positioning components (63) are provided on both sides of the top of the mounting frame (62), a first spring (64) is fixedly connected between the bottom of the U-shaped rod (61) and the carrier (4), and the elastic positioning component (63) includes a positioning frame (631); The positioning frame (631) is slidably connected to the upper end of the mounting frame (62) through 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). Guide slopes (634) are also formed on the opposite surfaces of the two positioning frames (631). The bottom of the U-shaped rod (61) is rotatably connected to a guide wheel (65), and a wedge block (66) is fixed to the side of the transfer mechanism (2) to drive the guide wheel (65) to move upward.

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

3. The 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 (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 (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 the middle of the tensioning seat (55) has a through hole adapted to the outer wall of the pipe (51).

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

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

7. A screw cutting device according to any one of claims 1 to 6, characterized in that: The machine (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). A collecting frame (14) is also installed on the machine (1) near the unloading station (13).

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