Tool rest for lathe for processing internal and external threads

Abstract

The present invention discloses a lathe tool holder for machining internal and external threads, which relates to the technical field of lathe tool holders, and comprises a tool fixing frame, an adjusting sleeve, a vertical distance adjustment component, an adjusting base, a support module, and a fixed spindle; the fixed spindle is fixed to the left side of the adjusting base, and the adjusting sleeve is fixed to the right side of the support module; one end of the tool fixing frame is fixed to the tool by a fixing bolt, and the other end passes through the adjusting sleeve, and the tool fixing frame is fixed by an adjusting bolt arranged on the side; the support module and the adjusting base are matched and installed in a sliding manner, and the internal adjustment structure of the vertical distance adjustment component is matched and arranged inside the adjusting base and matched and linked with the support module through its internal structure. The adjusting bolt can adjust the lateral distance of the tool fixing frame in the adjusting sleeve, and the vertical distance adjustment component is used to adjust the displacement of the support module in the vertical direction. The complementarity of the two improves the overall range of motion of the tool holder and meets the processing requirements of large-sized workpieces.

Description

Technical Field

[0001] The invention belongs to the technical field of lathe tool rests, and in particular relates to a lathe tool rest for processing internal and external threads. Background Art

[0002] When a lathe is processing threads, the pipe is usually clamped by the lathe's claws and driven to rotate, and the tool is controlled by the feed module to complete the threading. When the processed pipe is large, some lathes will keep the pipe fixed and use the tool module fixed to the lathe spindle to rotate to perform threading; but when faced with larger pipes, the general tool holder cannot meet the processing needs even when it is in the extreme adjustment position, which urgently requires a special tool holder to process the threads of large-sized pipes. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art and provide a tool holder for a lathe for processing internal and external threads, which can freely adjust the feed range.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a tool holder for a lathe for processing internal and external threads comprises a tool fixing frame, an adjusting sleeve, a vertical distance adjustment component, an adjusting base, a supporting module, and a fixed spindle; the fixed spindle is fixed at a central position below the left end surface of the adjusting base, and the adjusting sleeve is fixed at a central position above the right end surface of the supporting module; one end of the tool fixing frame is matched and fixed with the tool by multiple groups of fixing bolts, and the other end passes through a matching adjusting sleeve, and the tool fixing frame is fixed by an array of adjusting bolts arranged on the side of the adjusting sleeve; the supporting module and the adjusting base are matched and assembled and installed in a sliding manner, and the internal adjustment structure of the vertical distance adjustment component is matched and arranged inside the adjusting base and matched and linked with the supporting module through its internal structure; one side of the supporting module is provided with an array of locking bolts connecting the slide groove and matching the side of the slide, and the left and right sides of the supporting module are also symmetrically provided with two groups of roller modules matching the left end surface of the adjusting base. The lateral distance of the tool holder in the adjusting sleeve can be adjusted by adjusting the bolt, and the vertical distance adjustment assembly is used to adjust the vertical displacement of the support module. The complementarity of the two greatly improves the overall range of motion of the tool holder and meets the processing requirements of large-size workpieces; the locking bolt can adjust the tightness of the fit between the slide groove and the slide table to prevent the support module from sliding during processing and ensure processing accuracy; the roller module can assist the support module in sliding on the adjusting base and reduce the force on the vertical distance adjustment assembly.

[0005] Furthermore, the tool fixing frame includes a tool fixing port, an adjustment shaft arranged at the center of the left end face of the tool fixing port, and a transition adjustment shaft arranged concentrically with the left end face of the adjustment shaft; the length of the transition adjustment shaft matches the right end face of the adjustment base, and the tool fixing port is matched and fixed with the tool by multiple sets of fixing bolts. The segmented adjustment shaft and transition adjustment shaft facilitate the positioning of the tool fixing frame as a whole; the positioning of the tool fixing frame as a whole is ensured by multiple sets of adjustment bolts acting on the adjustment shaft.

[0006] Furthermore, the upper end surface of the support module is provided with a transition truncated cone connected to the adjustment sleeve, the transition truncated cone is concentric with the adjustment sleeve and is provided with a through hole matching the transition adjustment shaft; the left end surface of the support module is provided with a longitudinal slide groove, and the bottom of the slide groove is provided with a tooth groove matching the internal structure of the vertical distance adjustment component. The transition truncated cone plays a limiting role to prevent the transition adjustment shaft from interfering with the adjustment base.

[0007] Furthermore, the length of the adjustment base is much longer than the length of the support module, and a slide matching the slide groove is provided on the right end surface of the adjustment base, and the length of the slide matches the length of the adjustment base; the middle of the slide is provided with a waist-shaped long groove matching the internal structure of the vertical distance adjustment component. The adjustment base, which is much longer than the length of the support module, ensures sufficient displacement of the support module, and the waist-shaped long groove provides space for the linkage between the internal structure of the vertical distance adjustment component and the support module.

[0008] Furthermore, the roller module comprises four sets of mounting sleeves fixed to both sides of the support module and a roller assembly fixed to the mounting sleeves through locking nuts. The mounting sleeves are used to provide an installation position for the roller assembly.

[0009] Furthermore, each group of roller assemblies includes a roller, a fixed shaft for mounting the roller, a matching mounting shaft passing through a mounting sleeve, and a square connecting block connecting the mounting shaft and the fixed shaft; one end of the mounting sleeve is flush with the left end surface of the adjustment base, and the other end is flush with the right end surface of the supporting module; a square groove matching the square connecting block is provided on the left end surface of the mounting sleeve, and the surface of the roller fits with the left end surface of the adjustment base. The square groove provided on the end surface of the mounting sleeve limits the positioning of the square connecting block to prevent the overall deviation of the roller assembly.

[0010] The beneficial effects of the present invention are as follows: the tool holder is easy to use and easy to adjust; the locking bolt can adjust the tightness of the fit between the slide groove and the slide table to prevent the support module from sliding during processing and ensure processing accuracy; the roller module can assist the support module in sliding on the adjustment base and reduce the force on the vertical distance adjustment component; the lateral distance of the tool fixing frame in the adjustment sleeve can be adjusted by the adjusting bolt, and the vertical distance adjustment component is used to adjust the displacement of the support module in the vertical direction. The complementarity of the two greatly improves the overall range of activity of the tool holder and meets the processing requirements of large-size pipe parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is an isometric view of the present invention.

[0012] Figure 2 It is a schematic structural diagram of the cooperation between the tool fixing frame and the supporting module in the present invention.

[0013] Figure 3 It is a structural schematic diagram of the coordination between the adjusting base and the supporting module in the present invention.

[0014] Figure 4 It is a structural schematic diagram of the roller module in the present invention.

[0015] Explanation of the figure numbers: 1. Tool fixing bracket, 2. Fixing bolt, 3. Adjusting bolt, 4. Adjusting sleeve, 5. Vertical distance adjustment assembly, 6. Adjusting base, 7. Support module, 8. Fixed spindle, 9. Mounting sleeve, 10. Tool fixing port, 11. Adjusting shaft, 12. Transition adjusting shaft, 13. Transition frustum, 14. Through hole, 15. Slide groove, 16. Tooth groove, 17. Locking bolt, 18. Slide, 19. Waist-shaped long groove, 20. Square groove, 21. Mounting shaft, 22. Fixed shaft, 23. Square connecting block, 24. Roller, 25. Locking nut. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0017] like Figure 1 As shown, a tool holder for a lathe for processing internal and external threads includes a tool fixing frame 1, an adjusting sleeve 4, a vertical distance adjustment component 5, an adjusting base 6, a supporting module 7, and a fixed spindle 8; the fixed spindle 8 is fixed at the central position below the left end surface of the adjusting base 6, the adjusting sleeve 4 is fixed at the central position above the right end surface of the supporting module 7, and the fixed spindle 8 is connected to the rotating spindle of the boring machine, thereby driving the overall rotation of the tool holder. One end of the tool fixing frame 1 is matched and fixed with the tool through multiple sets of fixing bolts 2, and the other end passes through the matching adjusting sleeve 4, and the tool fixing frame 1 is fixed by a plurality of adjusting bolts 3 arranged on the side of the adjusting sleeve 4. The supporting module 7 is matched and assembled with the adjusting base 6 in a sliding manner, and the internal adjustment structure of the vertical distance adjustment component 5 is matched and arranged inside the adjusting base 6 and matched and linked with the supporting module 7 through its internal structure. The lateral distance of the tool holder 1 in the adjusting sleeve 4 can be adjusted by adjusting the bolt 3, and the vertical distance adjustment assembly 5 is used to adjust the vertical displacement of the support module 7. The complementarity of the two greatly improves the overall range of motion of the tool holder and meets the processing requirements of large-size workpieces.

[0018] like Figure 1 and2 The tool holder for a lathe for machining internal and external threads is shown, wherein the tool fixing frame 1 comprises a tool fixing port 10, an adjustment shaft 11 arranged at the center of the left end face of the tool fixing port 10, and a transition adjustment shaft 12 arranged concentrically with the left end face of the adjustment shaft 11; the segmented adjustment shaft 11 and the transition adjustment shaft 12 facilitate the positioning of the tool fixing frame 1 as a whole; the positioning of the tool fixing frame 1 as a whole is ensured by multiple groups of adjustment bolts 3 acting on the adjustment shaft 11. The length of the transition adjustment shaft 12 matches the right end face of the adjustment base 6, and the tool fixing port 10 is matched and fixed with the tool by multiple groups of fixing bolts 2. The upper end face of the support module 7 is provided with a transition truncated table 13 connected to the adjustment sleeve 4, the transition truncated table 13 is concentric with the adjustment sleeve 4 and is provided with a through hole 14 matching the transition adjustment shaft 12; the left end face of the support module 7 is provided with a longitudinal slide groove 15, and the bottom of the slide groove 15 is provided with a tooth groove 16 matching the internal structure of the vertical distance adjustment component 5. The transition cone 13 plays a limiting role to prevent the transition adjustment shaft 12 from interfering with the adjustment base 6 .

[0019] like Figure 2 and 3 The tool rest for a lathe for processing internal and external threads shown in the figure, the length of the adjusting base 6 is much longer than the length of the supporting module 7, and the right end surface of the adjusting base is provided with a slide 18 matching the slide groove 16, and the length of the slide 18 matches the length of the adjusting base 6; the adjusting base 6 much longer than the length of the supporting module 7 ensures sufficient displacement of the supporting module 7, so as to be suitable for large-sized workpieces. The middle part of the slide 18 is provided with a waist-shaped long groove 19 matching the internal structure of the vertical distance adjusting component 5, and the waist-shaped long groove 19 provides space for the linkage between the internal structure of the vertical distance adjusting component 5 and the supporting module 7. The waist-shaped long groove 19 is built with a lead screw assembly, the upper end of which is connected to the rotating handle provided at the top of the adjusting base 6, and the lower end of the lead screw assembly is provided with a linkage module matching the tooth groove 16, and the lead screw assembly is driven to rotate by rotating the handle, and the linkage module converts the circumferential rotation of the lead screw assembly into axial movement, and the vertical displacement of the supporting module 7 is completed by the matching linkage of the linkage module and the tooth groove 16.

[0020] like Figure 2 and 3 In the tool rest for a lathe for machining internal and external threads, a plurality of locking bolts 17 connected to the slide groove 15 are provided on one side of the support module 7, and the plurality of locking bolts 17 are matched with the side of the slide 18. The locking bolts 17 can adjust the tightness of the fit between the slide groove 15 and the slide 18 to prevent the support module 7 from sliding during machining and ensure machining accuracy.

[0021] like Figure 4The tool rest for a lathe for processing internal and external threads shown in the figure has two groups of roller modules symmetrically arranged on the left and right sides of the support module 7, which are matched with the left end face of the adjustment base 6. The roller modules can assist the sliding of the support module 7 on the adjustment base 6 and reduce the force on the vertical distance adjustment component 5. The roller module includes four groups of mounting sleeves 9 fixed on both sides of the support module 7 and roller assemblies fixed to the mounting sleeves 9 through locking nuts 25; each group of roller assemblies includes rollers 24, fixed shafts 22 for mounting rollers 24, mounting shafts 21 matching and passing through the mounting sleeves 9, and square connecting blocks 23 connecting the mounting shafts 21 and the fixed shafts 22. One end of the mounting sleeve 9 is flush with the left end face of the adjustment base 6, and the other end is flush with the right end face of the support module 7; the left end face of the mounting sleeve 9 is provided with a square groove 20 matching the square connecting block 23, and the surface of the roller 24 is in contact with the left end face of the adjustment base 6. The mounting sleeve 9 provides a mounting position for the roller assembly, and the square groove 20 provided on the end surface thereof limits the positioning of the square connecting block 23 to prevent the entire roller assembly from being offset.

[0022] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Simple replacement without changing the creative content of the present invention is considered to be the same creation. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A tool rest for a lathe for machining internal and external threads, characterized in that: The tool holder comprises a tool fixing frame (1), an adjusting sleeve (4), a vertical distance adjusting assembly (5), an adjusting base (6), a supporting module (7), and a fixed spindle (8); the supporting module (7) and the adjusting base (6) are mounted in a sliding manner, the fixed spindle (8) is fixed at a central position below the left end surface of the adjusting base (6), and the adjusting sleeve (4) is fixed at a central position above the right end surface of the supporting module (7); one end of the tool fixing frame (1) is fixed with a plurality of fixing bolts (2), and the other end is passed through a matching adjusting sleeve (4). The tool fixing frame (1) is fixed by means of a plurality of adjusting bolts (3) arranged on the outer side of the adjusting sleeve (4); the internal structure of the vertical distance adjustment component (5) is placed inside the adjusting base (6) for matching installation and is matched and linked with the support module (7) through its internal structure; one side of the support module (7) is provided with a plurality of locking bolts (17) connecting the slide groove (15) and matching with the side of the slide table (18); and the left and right sides of the support module (7) are also symmetrically provided with two groups of roller modules matching with the left end surface of the adjusting base (6); The tool fixing frame (1) comprises a tool fixing port (10), an adjustment shaft (11) arranged at the central position of the front end surface of the tool fixing port (10), and a transition adjustment shaft (12) arranged concentrically with the front end surface of the adjustment shaft (11); the length of the transition adjustment shaft (12) matches the right end surface of the adjustment base (6), and the tool fixing port (10) is matched and fixed to the tool by means of a plurality of sets of fixing bolts (2); The upper end surface of the support module (7) is provided with a transition truncated cone (13) connected to the adjustment sleeve (4), the transition truncated cone (13) is concentric with the adjustment sleeve (4) and is provided with a through hole (14) matching the transition adjustment shaft (12); the left end surface of the support module (7) is provided with a longitudinal slide groove (15), and the end surface of the slide groove (15) is provided with a tooth groove (16) matching the internal structure of the vertical distance adjustment component (5); The length of the adjustment base (6) is much greater than the length of the support module (7); a slide table (18) matching the slide groove (15) is provided on the right end surface of the adjustment base (6); the length of the slide table (18) matches the length of the adjustment base (6); a waist-shaped long groove (19) matching the internal structure of the vertical distance adjustment component (5) is provided in the middle of the slide table (18); A lead screw assembly is built into the waist-shaped long groove (19), the upper end of the lead screw assembly is connected to a rotating handle arranged at the top of the adjustment base (6), and the lower end of the lead screw assembly is provided with a linkage module matched with the tooth groove (16).

2. A tool rest for a lathe for machining internal and external threads according to claim 1, characterized in that: The roller module comprises four sets of mounting sleeves (9) fixed to both sides of the support module (7) and a roller assembly fixed to the mounting sleeves (9) via locking nuts (25).

3. A tool rest for a lathe for machining internal and external threads according to claim 2, characterized in that: Each group of roller assemblies comprises a roller (24), a fixed shaft (22) for mounting the roller (24), a matching mounting shaft (21) passing through the mounting shaft sleeve (9), and a square connecting block (23) connecting the mounting shaft (21) and the fixed shaft (22); one end of the mounting shaft sleeve (9) is flush with the left end surface of the adjustment base (6), and the other end is flush with the right end surface of the support module (7); the left end surface of the mounting shaft sleeve (9) is provided with a square groove (20) matching the square connecting block (23), and the surface of the roller (24) is in contact with the left end surface of the adjustment base (6).

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