A squaring cutter head and a squaring machining device for cylindrical workpieces

Abstract

This utility model provides a squaring cutter head, including a coaxially arranged disc body and a guide cylinder. A movable disc is sleeved on the guide cylinder. The movable disc has multiple guide parts at equal intervals, and each guide part has a guide groove. The length direction of the guide groove is not parallel to the axial direction of the movable disc. The disc body has multiple mounting parts at equal intervals. Each mounting part has a mounting groove and a cutting tool is placed in the mounting groove. Each mounting part has a positioning groove, and a push block is placed in the positioning groove. One end of the push block abuts against the cutting tool, and the other end has a guide rod. The distance between the end of each push block abutting the cutting tool and the central axis of the disc body is the same, and the guide rod corresponds to the guide groove. This utility model also provides a squaring machining device for cylindrical workpieces, including the above-mentioned squaring cutter head. This utility model solves the technical problem of cumbersome and time-consuming tool adjustment operations on existing cutter heads, and produces the technical effect of conveniently adjusting the position of the cutting tool on the disc body and ensuring that the extension length of the cutting tool is consistent.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a squaring cutter head and a squaring machining device for cylindrical workpieces having the squaring cutter head. Background Technology

[0002] When machining shaft-type parts, a squaring machine is usually used to machine the ends of cylindrical workpieces into flat rectangles or polygons.

[0003] Chinese invention patent CN114619082A discloses a multi-face milling machine tool, including a mounting base bed. A cross slide, a spindle box, and a cutter head box are mounted on the upper end of the mounting base bed. A clamping device is installed at one end of the spindle box to hold the workpiece. A cutter head is installed at one end of the cutter head box, and a tool holder is installed at one end of the cutter head. The workpiece and the cutter head rotate in the same direction and maintain a specific speed ratio. This multi-face milling machine is based on the cycloidal principle. Under different rotational speed ratios, the cutting trajectory formed by the tool path on the workpiece approximates a large-radius arc. Two points with a short distance are intercepted on the large arc, approaching a straight line, thus achieving planar machining. Furthermore, depending on the rotational speed ratio and the position and number of tools, the shape and number of faces of the cut part can vary.

[0004] When using the above-mentioned multi-face milling machine to process workpieces of different shapes and numbers of faces, a corresponding number of tool holders and cutting tools need to be installed at specific positions on the outer wall of the cutter head. During the installation of the tool holders and cutting tools, the length of the tool holders extending out of the cutter head needs to be adjusted so that the distance from the tool tip to the axis of the cutter head is equal to ensure that regular polygons are machined on the workpiece. Adjusting the position of each tool holder and cutting tool separately is cumbersome and time-consuming. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a squaring cutter head and a squaring machining device for cylindrical workpieces, which solves the problem of cumbersome and time-consuming tool adjustment operations on the cutter head in existing technologies.

[0006] According to an embodiment of this utility model, a machining tool disc includes a disc body and a guide cylinder coaxially arranged. A slidable movable disc is sleeved on the guide cylinder. Multiple guide portions are evenly spaced along the circumference of the movable disc, and each guide portion is provided with a guide groove. The length direction of the guide groove is not parallel to the axial direction of the movable disc. Multiple mounting portions are evenly spaced along the circumference of the disc body. Each mounting portion is provided with a mounting groove, and a detachable tool is provided in the mounting groove. A positioning groove communicating with the mounting groove is provided on the side of the mounting portion near the movable disc. A movable push block is provided in the positioning groove. One end of the push block extends into the mounting groove and abuts against the tool, and the other end is provided with a guide rod extending into the guide groove and abutting against the movable disc. The distance between the end of each push block abutting against the tool and the central axis of the disc body is the same, and the guide rod corresponds to the guide groove.

[0007] Furthermore, the outer peripheral wall of the guide cylinder is provided with a threaded portion, and the movable disc is provided with a rotatable threaded sleeve, which cooperates with the threaded portion.

[0008] Furthermore, the movable disc is provided with an installation groove for accommodating part of the threaded sleeve and a removable cover plate, the cover plate being fitted onto the threaded sleeve and covering the opening of the installation groove.

[0009] Furthermore, the cutting tool includes a tool shank that mates with the mounting groove. The mounting portion has an elongated hole that communicates with the mounting groove, and the length direction of the elongated hole is consistent with the length direction of the positioning groove. The tool shank has a first threaded hole that communicates with the elongated hole and a first locking bolt that passes through the elongated hole and mates with the first threaded hole.

[0010] Furthermore, the cutting tool also includes a blade, with one end of the cutting shank away from the push block extending out of the mounting groove, and the blade being detachably disposed within the mounting groove.

[0011] Furthermore, the cutting tool also includes a second locking bolt, the cutting bar extends out of the mounting groove and has a second threaded hole that mates with the second locking bolt, and the cutting blade has a through hole through which the second locking bolt passes and the through hole is aligned with the second threaded hole.

[0012] Furthermore, the push block has two parallel connecting plates at one end away from the mounting groove, and the two ends of the guide rod are respectively matched with the two connecting plates, with the guide part inserted between the two connecting plates.

[0013] Furthermore, the cross-section of the push block is trapezoidal, and the cross-section of the positioning groove is adapted to the push block.

[0014] Furthermore, the cutter head is provided with twelve mounting parts at equal intervals, and each mounting part is provided with a push block. The movable disc is provided with twelve guide parts at equal intervals, and each guide part is provided with a guide groove that corresponds to and cooperates with the push block.

[0015] On the other hand, according to an embodiment of the present invention, a squaring machining device for cylindrical workpieces is also provided, including a base, on which a spindle box and a cutter head box are provided. The spindle box and the cutter head box are connected by a coupling. The cutter head box includes a cutter shaft, and the end of the cutter shaft is provided with the aforementioned squaring cutter head.

[0016] Compared with the prior art, this utility model has the following beneficial effects: By adopting a guide cylinder on the disc body and a movable disc on the guide cylinder, when the movable disc slides on the guide cylinder, the movable disc drives each push block to move synchronously in the corresponding positioning groove through the guide groove on the guide part and the cooperation of the guide rod. This allows the push blocks to extend into or out of the mounting groove by a certain distance and keeps the distance between each push block and the central axis of the disc body consistent. When the tool is installed in the mounting groove, the end of the tool is kept in contact with the push block to ensure that the length of the tool extending out of the disc body is the same. When it is necessary to adjust the length of the tool extension, the movable disc is moved a corresponding distance on the guide cylinder. This solves the technical problem of the cumbersome and time-consuming tool adjustment operation on the existing tool holder on the tool disc. It produces the technical effect of conveniently adjusting the position of the tool on the disc body and ensuring that the length of the tool extension is consistent, which is conducive to improving processing efficiency and the accuracy of polygons processed on cylindrical workpieces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a machining cutter head according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a machining cutter head according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the disc body in a turning tool turret according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the push block in the cutting tool disc of a machining center according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the cutting tool in a turning tool holder according to an embodiment of the present invention.

[0022] In the above figures: 1. Disc body; 11. Mounting part; 12. Mounting groove; 13. Positioning groove; 14. Oblong hole; 2. Guide cylinder; 21. Threaded part; 3. Movable disc; 31. Guide part; 32. Guide groove; 33. Threaded sleeve; 34. Cover plate; 4. Cutting tool; 41. Tool holder; 42. First locking bolt; 43. Blade; 44. Second locking bolt; 5. Push block; 51. Guide rod; 52. Connecting plate. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a square cutting tool head for mounting cutting tools 4 during the process of machining cylindrical workpieces into flat square, square, hexagonal, octagonal and other shapes.

[0025] Please refer to Figure 1 and Figure 2 The machining head includes a coaxially mounted disc body 1 and a guide cylinder 2. A slidable movable disc 3 is sleeved on the guide cylinder 2. Multiple guide portions 31 are evenly spaced along the circumference of the movable disc 3, and each guide portion 31 has a guide groove 32. The length direction of the guide groove 32 is not parallel to the axial direction of the movable disc 3. Multiple mounting portions 11 are evenly spaced along the circumference of the disc body 1. Each mounting portion 11 has a mounting groove 12, and a detachable tool 4 is disposed within the mounting groove 12. A positioning groove 13 communicating with the mounting groove 12 is provided on the side of the mounting portion 11 near the movable disc 3. A movable push block 5 is disposed within the positioning groove 13. One end of each push block 5 extends into the mounting groove 12 and abuts against the cutter 4, while the other end is provided with a guide rod 51 that extends into the guide groove 32 and abuts against the movable disk 3. The distance between the end of each push block 5 that abuts against the cutter 4 and the central axis of the disk body 1 is the same, and the guide rod 51 and the guide groove 32 are in one-to-one correspondence. By moving the movable disk 3 on the guide cylinder 2, each push block 5 can move synchronously in the positioning groove 13 and change the length of the push block 5 extending into the mounting groove 12. Then, by pressing the end of the cutter 4 against the push block 5, the length of the cutter 4 extending out of the disk body 1 can be adjusted and the length of the cutter 4 extending out of the disk body 1 can be ensured to be consistent.

[0026] Specifically, the operation steps for installing the cutting tool 4 on the machining head provided in this embodiment are as follows: Calculate the length of the cutting tool 4 extending out of the disc body 1 according to the machining requirements of the cylindrical workpiece and move the movable disc 3. When the movable disc 3 slides on the guide cylinder 2, it drives each push block 5 to move synchronously in the corresponding positioning groove 13 through the cooperation of the guide groove 32 and the guide rod 51, so that the push block 5 extends into or out of the mounting groove 12 by a certain distance, and the distance between each push block 5 and the central axis of the disc body 1 remains consistent during the movement of the push block 5. Then, the required number of cutting tools 4 are installed into the corresponding mounting groove 12, and the end of the cutting tool 4 is pressed against the push block 5 during installation, which ensures that the length of the cutting tool 4 extending out of the disc body 1 is the same. When it is necessary to adjust the length of the cutting tool 4 extending out, move the movable disc 3 on the guide cylinder 2 by a corresponding distance, and then fix the cutting tool 4 to the push block 5. The machining head provided in this embodiment can easily adjust the position of the cutting tool 4 on the disc body 1 and ensure that the extension length of the cutting tool 4 is consistent, which helps to improve machining efficiency and the accuracy of the polygons machined on cylindrical workpieces.

[0027] like Figure 2 and Figure 3 As shown, the outer peripheral wall of the guide cylinder 2 is provided with a threaded portion 21, and the movable disk 3 is provided with a rotatable threaded sleeve 33, which engages with the threaded portion 21. When the threaded sleeve 33 is rotated, the engagement between the threaded sleeve 33 and the threaded portion 21 causes the threaded sleeve 33 to move axially along the guide cylinder 2, thereby driving the movable disk 3 to slide on the guide cylinder 2 and adjusting the position of the push block 5. After the movable disk 3 is adjusted to the correct position, the engagement between the threaded sleeve 33 and the threaded portion 21 locks the position of the movable disk 3 on the guide cylinder 2, preventing unexpected movement of the movable disk 3 during processing and improving the reliability of the machining tool head.

[0028] In this embodiment, the movable disk 3 is provided with a mounting groove 12 for accommodating part of the threaded sleeve 33 and a detachable cover plate 34. The cover plate 34 is fitted onto the threaded sleeve 33 and covers the opening of the mounting groove 12. The threaded sleeve 33 is installed onto the movable disk 3 through the cooperation of the cover plate 34 and the movable disk 3, so that the threaded sleeve 33 can rotate relative to the movable disk 3 while ensuring a stable connection between the threaded sleeve 33 and the movable disk 3.

[0029] Please combine Figure 2 , Figure 3 and Figure 5The cutting tool 4 includes a tool shank 41 that mates with the mounting groove 12. The mounting part 11 has an elongated hole 14 communicating with the mounting groove 12, and the length direction of the elongated hole 14 is consistent with the length direction of the positioning groove 13. The tool shank 41 has a first threaded hole communicating with the elongated hole 14 and a first locking bolt 42 passing through the elongated hole 14 and engaging with the first threaded hole. The cutting tool 4 is fixed in the mounting groove 12 by the abutment of the first locking bolt 42 against the mounting part 11. When adjusting the position of the cutting tool 4, rotating the first locking bolt 42 can release the locking of the tool shank 41. During the adjustment of the position of the cutting tool 4, the first locking bolt 42 can slide in the elongated hole 14 to prevent the cutting tool 4 from falling off. After the cutting tool 4 is moved into place, tightening the first locking bolt 42 can lock the cutting tool 4 back onto the mounting part 11. The operation is simple and convenient.

[0030] like Figure 5 As shown, the cutting tool 4 also includes a blade 43. The end of the tool holder 41 away from the push block 5 extends out of the mounting groove 12, and the blade 43 is detachably disposed within the mounting groove 12. The blade 43, mounted in the mounting groove 12 at the end of the tool holder 41, is used for machining cylindrical workpieces. The blade 43 is disposed in the mounting groove 12 to facilitate its combination with the tool holder 41, and the blade 43 is detachably connected to the tool holder 41, allowing for easy replacement of the blade 43 after wear.

[0031] In detail, the cutting tool 4 further includes a second locking bolt 44. The cutting tool shank 41 extends out of the mounting groove 12 and has a second threaded hole that mates with the second locking bolt 44. The cutting blade 43 has a through hole through which the second locking bolt 44 passes, and the through hole is aligned with the second threaded hole. The cutting blade 43 is fixed to the cutting tool shank 41 by the engagement of the second locking bolt 44 with the second threaded hole. When installing the cutting blade 43, the cutting blade 43 is placed into the mounting groove 12, and then the second locking bolt 44 is aligned with the second threaded hole and tightened. This method is convenient to operate and ensures a reliable connection between the cutting blade 43 and the cutting tool shank 41. When the cutting blade 43 needs to be replaced, the second locking bolt 44 can be rotated to remove it from the second threaded hole.

[0032] Please refer to Figure 2 , Figure 3 and Figure 4The push block 5 has two parallel connecting plates 52 at one end away from the mounting groove 12. The two ends of the guide rod 51 are respectively matched with the two connecting plates 52, and the guide part 31 is inserted between the two connecting plates 52. The two parallel connecting plates 52 at the end of the push block 5 are used for mounting the guide rod 51. After the push block 5 is combined with the movable disk 3, the guide part 31 is inserted between the two connecting plates 52, which helps improve the stability of the cooperation between the push block 5 and the movable disk 3, ensuring that the push block 5 moves smoothly under the drive of the movable disk 3.

[0033] Specifically, the push block 5 has a trapezoidal cross-section, and the positioning groove 13 has a cross-section that matches the push block 5. By setting the cross-section of the push block 5 to be trapezoidal and the positioning groove 13 to match the push block 5, the push block 5 can move in a preset direction within the positioning groove 13, preventing the push block 5 from experiencing unexpected offsets or deflections, thereby making the cutting head more reliable.

[0034] like Figure 1 and Figure 3 As shown, in this embodiment, the cutter head has twelve mounting portions 11 spaced at equal intervals, each mounting portion 11 containing a pusher block 5. The movable disk 3 has twelve guide portions 31 spaced at equal intervals, each guide portion 31 having a guide groove 32 corresponding to and cooperating with the pusher block 5. By providing twelve mounting portions 11 spaced at equal intervals on the cutter head for mounting the cutter 4, and with the included angle between the center lines of any two adjacent mounting portions 11 being 30°, mounting the cutter 4 on the corresponding mounting portions 11 allows the square turning cutter head to meet the requirements for machining rectangular, square, hexagonal, and octagonal shapes on cylindrical workpieces, improving the versatility of the square turning cutter head. Furthermore, the pusher block 5 in each mounting portion 11 can be uniformly adjusted via the movable disk 3, facilitating the use of the square turning cutter head.

[0035] On the other hand, this utility model embodiment also provides a cylindrical workpiece squaring processing device, including a base, on which a spindle box and a cutter head box are provided. The spindle box and the cutter head box are connected by a coupling. The cutter head box includes a cutter shaft, and the end of the cutter shaft is provided with the aforementioned squaring cutter head.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of machining cutter head, characterized in that: The device includes a coaxially arranged disc body and a guide cylinder. A slidable movable disc is sleeved on the guide cylinder. Multiple guide portions are evenly spaced along the circumference of the movable disc, and each guide portion has a guide groove. The length direction of the guide groove is not parallel to the axial direction of the movable disc. Multiple mounting portions are evenly spaced along the circumference of the disc body. Each mounting portion has a mounting groove, and a detachable tool is provided in the mounting groove. The side of the mounting portion near the movable disc has a positioning groove communicating with the mounting groove. A movable push block is provided in the positioning groove. One end of the push block extends into the mounting groove and abuts against the tool, and the other end has a guide rod extending into the guide groove and abutting against the movable disc. The distance between the end of each push block abutting against the tool and the central axis of the disc body is the same, and the guide rod corresponds to the guide groove.

2. The machining cutter head as described in claim 1, characterized in that: The guide cylinder has a threaded portion on its outer peripheral wall, and the movable disc has a rotatable threaded sleeve that engages with the threaded portion.

3. A turning cutter head as described in claim 2, characterized in that: The movable disc is provided with an installation groove for accommodating part of the threaded sleeve and a removable cover plate. The cover plate is fitted onto the threaded sleeve and covers the opening of the installation groove.

4. A turning cutter head as described in claim 1, characterized in that: The cutting tool includes a tool shank that mates with the mounting groove. The mounting part has an elongated hole that communicates with the mounting groove, and the length direction of the elongated hole is consistent with the length direction of the positioning groove. The tool shank has a first threaded hole that communicates with the elongated hole and a first locking bolt that passes through the elongated hole and mates with the first threaded hole.

5. A turning cutter head as described in claim 4, characterized in that: The cutting tool also includes a blade, and the end of the cutting shank away from the push block extends out of the mounting groove, and the blade is detachably disposed in the mounting groove.

6. A turning cutter head as described in claim 5, characterized in that: The cutting tool also includes a second locking bolt. The cutting bar extends out of the mounting groove and has a second threaded hole that mates with the second locking bolt. The cutting blade has a through hole through which the second locking bolt passes, and the through hole is aligned with the second threaded hole.

7. A turning cutter head as described in claim 1, characterized in that: The push block has two parallel connecting plates at one end away from the mounting groove. The two ends of the guide rod are respectively matched with the two connecting plates, and the guide part is inserted between the two connecting plates.

8. A turning cutter head as described in claim 1, characterized in that: The push block has a trapezoidal cross-section, and the positioning groove has a cross-section that matches the push block.

9. A turning cutter head as described in claim 1, characterized in that: The cutter head is provided with twelve mounting parts at equal intervals, and each mounting part is provided with a push block. The movable disc is provided with twelve guide parts at equal intervals, and each guide part is provided with a guide groove that corresponds to and cooperates with the push block.

10. A device for squaring cylindrical workpieces, comprising a base, on which a spindle box and a tool head box are mounted, the spindle box and the tool head box being connected by a coupling, the tool head box including a tool shaft, characterized in that: The end of the cutter shaft is provided with a turning cutter head as described in any one of claims 1-9.

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