Universal angle turning tool extension tool holder

Abstract

The utility model relates to mechanical processing technical field, concretely is a kind of universal angle lathe tool extension tool holder, including fixed seat and adjusting base, fixed seat is by the lathe tool holder connecting portion for being connected with lathe tool holder and the adjusting base connecting portion for being connected with adjusting base is composed, adjusting base is rotatably installed on adjusting base connecting portion, rotating drive device for driving adjusting base to rotate to adjust angle and locking device for locking adjusting base on adjusting base connecting portion after adjusting angle are provided on adjusting base connecting portion, lathe tool is fixedly installed in the bottom of adjusting base. The universal angle lathe tool extension tool holder effectively solves the problem of traditional lathe tool holder in angle adjustment efficiency, angle adjustment accuracy, stability, convenience and universality etc., provides powerful support for the high-precision, high-efficiency processing of complex parts in new energy automobile, aerospace and other fields.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a universal angle turning tool extension holder. Background Technology

[0002] With the rapid development of modern machinery manufacturing, the demand for machining complex parts in fields such as new energy vehicles and aerospace is increasing. For example, complex parts such as spline grooves in new energy vehicle reducers and toothed rings in aero engines require higher precision and flexibility in the machining of groove features. Under these complex working conditions, the traditional tool holder angle adjustment method has gradually revealed the following shortcomings: low angle adjustment efficiency; traditional tool holders need to be manually disassembled and repositioned, which is cumbersome and time-consuming, making it difficult to meet the machining requirements of rapid tool changes; and discontinuous angle adjustment. The inability to achieve stepless adjustment at any angle limits machining adaptability, making it difficult to meet precision requirements, especially in machining complex features such as multi-angle oil grooves and irregular grooves. A significant conflict exists between rigidity and convenience; some adjustable tool holders sacrifice structural rigidity for flexibility, leading to increased vibration during deep groove machining, affecting surface quality and dimensional accuracy. Conversely, tool holders with higher rigidity are inconvenient to adjust due to their complex structure, failing to balance efficiency and stability. Furthermore, insufficient versatility means existing tool holders are mostly designed for specific tool heads, making them incompatible with various tool heads used for turning, grooving, and threading, increasing equipment costs and complicating maintenance.

[0003] Based on the above-mentioned needs, this utility model proposes a universal angle turning tool extension holder. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a universal angle turning tool extension holder. This universal angle turning tool extension holder effectively solves the problems of traditional turning tool holders in terms of angle adjustment efficiency, angle adjustment accuracy, stability, convenience, and versatility, providing strong support for the high-precision and high-efficiency machining of complex parts in fields such as new energy vehicles and aerospace.

[0005] The technical solution of this utility model is as follows:

[0006] A universal angle turning tool extension holder includes a fixed base and an adjusting base. The fixed base consists of a lathe tool holder connecting part for connecting with a lathe tool holder and an adjusting base connecting part for connecting with the adjusting base. The adjusting base is rotatably mounted on the adjusting base connecting part. The adjusting base connecting part is provided with a rotation drive device for driving the adjusting base to rotate to adjust the angle and a locking device for locking the adjusting base on the adjusting base connecting part after adjusting the angle. The turning tool is fixedly mounted on the bottom of the adjusting base.

[0007] The adjusting base connection part is provided with a concave semi-circular arc-shaped boss mounting groove, and the top of the adjusting base is a semi-circular arc-shaped annular boss with the same diameter as the boss mounting groove.

[0008] A pointer is provided on the outer side of the adjustment base connection part, and an angle scale is provided on the outer side of the annular boss to cooperate with the pointer.

[0009] An angular scale includes scale lines and scale values.

[0010] The accuracy of the angle scale is 0.5 degrees.

[0011] The locking device includes a locking block and a shoulder screw. The top of the locking block is an arc-shaped structure that fits into the inner arc of the annular boss. A threaded hole I is provided on the boss mounting groove, a square groove is provided on the annular boss, and a pin hole II is provided on the locking block. The shoulder screw passes through the pin hole II and the square groove in sequence and is threaded into the threaded hole I.

[0012] The rotary drive device includes a worm and a worm wheel that mesh with each other. The worm wheel is fixedly connected to the top of the adjusting base, and the worm is rotatably mounted on the fixed base.

[0013] The worm gear is mounted on a fixed seat via bearings.

[0014] A handwheel is fixedly connected to one end of the worm gear.

[0015] A tapered hole is provided on the tool holder connection part of the lathe.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model discloses a universal angle turning tool extension holder, which can efficiently adjust the angle and improve machining efficiency: by setting a rotation drive device, the adjustment base can be driven to rotate on the adjustment base connection part, realizing the rapid adjustment of the turning tool angle without cumbersome disassembly operation, greatly shortening the tool change time, significantly improving machining efficiency, and better adapting to the machining needs of rapid tool change, thus meeting the requirements of efficient production in modern machinery manufacturing industry.

[0018] 2. This utility model discloses a universal angle turning tool extension holder, which provides precise angle adjustment to meet high-precision machining requirements. A pointer is set on the outside of the connecting part of the adjusting base, and an angle scale is set on the outside of the annular boss to match it. The operator can intuitively and accurately read the rotation angle of the adjusting base to achieve precise angle adjustment. The angle scale accuracy reaches 0.5 degrees, which can meet the high precision requirements for groove features in the machining of complex parts in fields such as new energy vehicles and aerospace. It effectively improves the machining quality and enhances the machining adaptability, and is especially suitable for machining complex features such as multi-angle oil grooves and irregular grooves.

[0019] 3. This utility model discloses a universal angle turning tool extension holder, which provides stable and reliable locking to ensure machining stability. To ensure the stability of the tool holder angle during machining, this tool holder is designed with a unique locking device. The top of the locking block is an arc-shaped structure that fits against the inner arc of the annular boss. The shoulder screw passes through the locking block pin hole and the square groove of the annular boss in sequence and is then threaded into the threaded hole, firmly locking the adjusting base onto the adjusting base connection part. The locking method is simple and reliable, effectively preventing the adjusting base from rotating on its own after it is adjusted to the appropriate angle, avoiding angle deviation caused by vibration and other reasons. This ensures the stability of the tool holder during machining, reduces vibration during deep groove machining, improves the surface quality and dimensional accuracy of the parts, and balances rigidity and convenience.

[0020] 4. This utility model discloses a universal angle turning tool extension holder. This universal angle turning tool extension holder features an optimized transmission design, making operation convenient and labor-saving: the rotation drive device uses a meshing worm and worm wheel, with the worm wheel fixedly connected to the top of the adjusting base, and the worm rotatably mounted on the fixed base; the worm and worm wheel transmission has self-locking properties, automatically locking without external force, improving the stability and safety of the tool holder; simultaneously, the worm is mounted on the fixed base via bearings, reducing frictional resistance during rotation, making the worm rotation smoother and improving transmission efficiency; furthermore, a handwheel is fixedly connected to one end of the worm, allowing the operator to easily drive the worm to rotate, thereby driving the worm wheel and the adjusting base to rotate, achieving tool angle adjustment, making operation more convenient and labor-saving, further improving the efficiency and convenience of angle adjustment. Attached Figure Description

[0021] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0022] In the attached diagram:

[0023] Figure 1 This is an exploded structural diagram of a universal angle turning tool extension holder according to an embodiment of the present utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of a fixing seat for a universal angle turning tool extension holder according to an embodiment of the present utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of an adjusting base for a universal angle turning tool extension holder according to an embodiment of the present utility model;

[0026] Figure 4This is a schematic diagram of the angle scale of the adjustment base of a universal angle turning tool extension holder according to an embodiment of the present utility model.

[0027] Figure 5 This is a cross-sectional view of an adjusting base for a universal angle turning tool extension holder according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the worm gear structure of a universal angle turning tool extension holder according to an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the worm gear structure of a universal angle turning tool extension holder according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the bearing seat of a universal angle turning tool extension holder according to an embodiment of the present utility model;

[0031] Figure 9 This is a schematic diagram of the structure of a locking block for a universal angle turning tool extension holder according to an embodiment of the present utility model;

[0032] Figure 10 This is a schematic diagram of the handwheel structure of a universal angle turning tool extension holder according to an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the bearing structure of a universal angle turning tool extension holder according to an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of a shoulder screw for a universal angle turning tool extension holder according to an embodiment of the present invention;

[0035] Figure 13 This is a structural schematic diagram of a universal angle turning tool extension holder in use according to an embodiment of the present invention;

[0036] The components represented by the various reference numerals in the diagram are:

[0037] This utility model includes: 1. a fixed base, 2. an adjusting base, 3. a worm gear, 4. a worm wheel, 5. a bearing seat, 6. a locking block, 7. a handwheel, 8. a bearing, 9. a shoulder screw, 10. a lathe tool holder, 11. a lathe tool, 12. a screw, and 13. a positioning pin.

[0038] 110. Lathe tool holder connecting part; 120. Adjusting base connecting part;

[0039] 111. Conical hole;

[0040] 121. Boss mounting slot; 122. Worm gear mounting slot; 123. Pointer;

[0041] 1211 Threaded hole I; 1212 Stop boss; 1221 Bearing mounting groove I; 1222 Bearing housing mounting groove; 1223 Plain hole;

[0042] 210. Worm gear mounting part; 220. Circular boss;

[0043] 211. Threaded hole II; 212. Pin hole I; 221. Square groove; 222. Angular scale.

[0044] 310. Worm gear body; 320. Optical axis;

[0045] 321. Snap ring mounting slot;

[0046] 410. Inner hole;

[0047] 510. Threaded hole III; 520. Bearing mounting groove II;

[0048] 610. Pin Hole II;

[0049] 710. Threaded shaft;

[0050] 810, Inner ring; 820, Outer ring;

[0051] 910, pin; 920, external thread. Detailed Implementation

[0052] like Figure 1 As shown, the universal angle turning tool extension holder includes a fixed base 1 and an adjusting base 2. Please refer to [link / reference]. Figure 13 In use, the fixed base 1 is fixedly connected to the lathe tool holder 10, while the lathe tool 11 is fixedly mounted on the adjusting base 2 by screws 12 and positioning pins 13.

[0053] like Figure 2 As shown, the fixed base consists of a lathe tool holder connecting part 110 for connecting with the lathe tool holder 10 and an adjusting base connecting part 120 for connecting with the adjusting base 2.

[0054] A tapered hole 111 is provided on the lathe tool holder connection part 110, and the fixing seat 1 is clamped on the tool holder of the lathe equipment by a set screw.

[0055] The adjusting base connecting part 120 is composed of a boss mounting groove 121 and a worm mounting groove 122. The worm mounting groove 122 is located in the middle, and the boss mounting groove 121 is located on both sides of the worm mounting groove 122. A pointer 123 is provided at the middle position of the outer side of the adjusting base connecting part 120.

[0056] The boss mounting groove 121 is a concave semi-circular arc structure. A threaded hole I 1211 is provided in the middle of the boss mounting groove 121. A stop boss 1212 is provided at the position where the boss mounting groove 121 connects with the worm mounting groove 122.

[0057] The worm gear mounting groove 122 has bearing mounting grooves I 1221 and bearing housing mounting grooves 1222 at both ends, and a light hole 1223 is provided in the bearing housing mounting groove 1222.

[0058] The adjusting base 2 is rotatably mounted on the adjusting base connecting part 120. The adjusting base connecting part 120 is provided with a rotation drive device for driving the adjusting base 2 to rotate to adjust the angle and a locking device for locking the adjusting base 2 on the adjusting base connecting part 120 after adjusting the angle. The cutting tool 11 is fixedly mounted on the bottom of the adjusting base 2.

[0059] like Figure 3 As shown, the adjusting base 2 consists of a worm gear mounting part 210 and an arc-shaped boss 220. The worm gear mounting part 210 is located in the middle, and the arc-shaped bosses 220 are located on both sides of the worm gear mounting part 210. The outer periphery of the arc-shaped bosses 220 mates with the boss mounting groove 121, that is, the boss mounting groove 121 is used to mount the arc-shaped bosses 220. Long square grooves 221 are provided on the arc-shaped bosses 220; Figure 7 The inner hole 410 of the worm gear 4 is fitted with the worm gear mounting part 210 and fixedly connected to the worm gear mounting part 210 by welding or other means.

[0060] like Figure 5 As shown, the bottom of the worm gear mounting part 210 is provided with a threaded hole II 211 for mounting screw 12 and a pin hole I 212 for mounting locating pin 13.

[0061] like Figure 4 As shown, the outer side of the annular boss 220 is provided with an angle scale 222 that works in conjunction with the pointer 123.

[0062] like Figure 6 As shown, the worm 3 consists of a worm body 310 and an optical shaft 320, and a snap ring mounting groove 321 is provided on the optical shaft 320.

[0063] like Figure 8 As shown, the bearing housing 5 is provided with a bearing mounting groove II 520 and a threaded hole III 510.

[0064] like Figure 9 As shown, the top of the locking block 6 is an arc-shaped structure that matches the inner arc of the annular boss 220, and the bottom is a flat surface. A pin hole II 610 is provided in the center of the locking block 6.

[0065] like Figure 10As shown, one end of the handwheel 7 is provided with a threaded shaft 710, which is used to be threadedly fixedly connected to one end of the worm gear 3.

[0066] like Figure 11 As shown, bearing 8 includes an inner ring 810 and an outer ring 820.

[0067] like Figure 12 As shown, the shoulder screw 9 includes a pin 910, and the lower end of the pin 910 is provided with an external thread 920. Example

[0068] After the worm gear 3 is assembled with the bearing 8, it is pressed and limited in the bearing mounting groove I1221 of the fixed seat 1 by the bearing seat 5; after the adjusting base 2 and the worm wheel 4 are welded together, they are connected to the fixed seat 1 by the shoulder screw 9 passing through the locking block 6 so that the worm wheel 4 and the worm gear 3 mesh; the handwheel 7 is threadedly connected to the optical axis 320 of the worm gear 3; the fixed seat 1 is engraved with pointer 123, and the adjusting base 2 is laser-engraved with an angle scale 22 of ±90° with an accuracy of 0.5 degrees to achieve precise angle adjustment; the lower end of the adjusting base 2 is provided with a threaded hole II211 and a pin hole I212, which are connected to the tool body of the lathe tool 11 by screw 12 and positioning pin 13; the rear end of the fixed seat 1 is clamped on the lathe tool holder 10 of the lathe equipment by a set screw; by rotating the handwheel 7, the angle of the lathe tool is changed by the transmission of the worm gear, so that the lathe tool can perform turning operations at various angles.

[0069] This tool holder has a reasonable and flexible structure, allowing the cutting tool to work at different angles to adapt to complex machining needs. Its novel structure adopts a modular tool holder extension structure, which can be compatible with the installation of all cutting tools to meet the machining requirements of various angles.

[0070] A tapered hole 111 is provided on the side end face of the rear boss of the fixed seat 1, which fits tightly with the tapered surface of the front end of the set screw to ensure stability when installed on the lathe tool post.

[0071] Bearing mounting grooves I1221 are opened on both end faces of the fixed seat 1; bearing housing mounting grooves 1222 are opened on both end faces of the fixed seat 1; a smooth hole 1223 is opened on the upper end face of the fixed seat 1; a threaded hole III510 is opened on the end face of the bearing housing 5; a bearing mounting groove II520 is opened on the bearing housing 5; the two ends of the worm 3 are machined into smooth shafts 320, and the end faces of the smooth shafts are machined into snap ring mounting grooves 321; the inner ring 810 of the bearing 8 is interference-fitted with the smooth shaft 320 of the worm 3; snap rings are installed in the snap ring mounting grooves 321 on both sides of the bearing 8 to limit the bearing 8; the bearing housing 5 is installed in the bearing housing mounting groove 1222 of the fixed seat 1, and a set screw passes through the smooth hole 1223 of the fixed seat 1 and screws into the threaded hole III510 of the bearing housing 5, so that the outer ring 820 of the bearing 8 is installed in the bearing mounting groove II520 of the bearing housing 5 and pressed and limited in the bearing mounting groove I1221 of the fixed seat 1, thus realizing the connection of the fixed seat 1, the worm 3, the bearing housing 5 and the bearing 8.

[0072] The adjusting base 2 is semi-circular, with a worm gear mounting part 210 in the middle of its end face, annular bosses 220 on both sides axially, and a square groove 221 radially. The worm gear 4 is semi-circular with an inner hole 410 in the middle. The locking block 6 is semi-circular in shape with a pin hole II 610 in the middle. The fixed base 1 has an annular stop boss 1212 and a threaded hole I 1211. The front end of the shoulder screw 9 has a pin 910. The inner hole 410 of the worm gear 4 is welded to the worm gear mounting part 210 of the adjusting base 2 after an interference fit. The two ends of the worm gear mounting part 210 are tightly fitted with the annular stop boss 1212. The outer circle of the locking block 6 is tightly fitted with the annular boss 220. The shoulder screw 9 passes through the pin hole II 610 with a clearance fit between the pin 910 and the pin hole II 610, passes through the square groove 221, and is screwed into the threaded hole I 1211, thus realizing the connection between the adjusting base 2, the worm gear 4, the locking block 6, and the fixed base 1.

[0073] The two sides of the adjustable base are laser-engraved with scale lines and graduations, with an accuracy of 0.5 degrees, to ensure the precision of angle adjustment.

[0074] The bottom of the adjusting base 2 has a threaded hole II 211 and a locating pin hole I 212. The cutting tool 11 is connected to the adjusting base 2 by screws 12 and locating pins 13.

[0075] Bearing 8 is a deep groove ball bearing.

[0076] The handwheel 7 has a threaded shaft 710 that is connected to the threaded hole on the optical shaft end face of the worm gear 3;

[0077] The transmission pair module of worm gear 3 and worm wheel 4 is 1.25, the lead angle of the worm wheel is ≤5°, and it has self-locking performance.

[0078] The universal angle turning tool extension holder is compatible with all turning tools.

[0079] For modular turning tools with universal angle turning tool extension holders, countersunk holes and locating pin holes need to be made in the tool body.

[0080] The universal angle tool extension holder allows for stepless adjustment of the cutting tool within a ±45 degree angle range.

[0081] The following is an example of a specific operation process:

[0082] A certain part requires a deep groove with its centerline at a 20-degree angle to the horizontal and a roundness of 0.3. When installing the grooving tool with a 20-degree clockwise rotation angle, the operation is as follows:

[0083] (1) First, the countersunk screw hole and pin hole are machined on the grooving cutter body, and then connected to the bottom of the adjustment base 2 of the extension cutter holder by screws and positioning pins;

[0084] (2) Install the fixed seat 1 into the lathe tool post, align the tapered hole 111 with the tool post set screw hole, screw in the set screw to lock the extension tool post, and install it in the tool post;

[0085] (3) Rotate the handwheel 7 so that the pointer 123 is aligned with the 0 degree reference line of the indexing plate, and tighten the shoulder screw 9 so that the locking block 6 is tightly fitted with the annular boss 220;

[0086] (4) Use a lever dial indicator to check the parallelism between the tool mounting surface and the machine tool spindle axis, and adjust it to a deviation of ≤0.005mm.

[0087] (5) Loosen the shoulder screw 9 until the adjusting base can rotate, then rotate the handwheel 7 clockwise so that the pointer 123 of the fixed seat 1 points to the 20-degree scale line of the indexing plate, and tighten the shoulder screw 9 so that the locking block 6 fits tightly with the annular boss 220.

[0088] (6) After the test piece passes the cutting verification, turning operations are carried out.

[0089] This universal angle turning tool extension holder is suitable for angle adjustment of all turning tools, and can be compatible with various tool heads for turning, grooving, and threading. It has modular adaptability and strong versatility. The worm gear drive (module 1.25, lead angle ≤5°) structure, combined with the laser-engraved indexing plate, can achieve efficient and precise stepless adjustment. Each rotation of the handwheel corresponds to a 3-degree fine adjustment, which is better than the 15-degree interval of the gear structure. Through purely mechanical innovative design, it achieves the best balance between cost, efficiency and precision.

Claims

1. A universal angle turning tool extension holder, characterized in that, The device includes a fixed base (1) and an adjusting base (2). The fixed base (1) consists of a lathe tool holder connecting part (110) for connecting with a lathe tool holder (10) and an adjusting base connecting part (120) for connecting with the adjusting base (2). The adjusting base (2) is rotatably mounted on the adjusting base connecting part (120). The adjusting base connecting part (120) is provided with a rotation drive device for driving the adjusting base (2) to rotate to adjust the angle and a locking device for locking the adjusting base (2) on the adjusting base connecting part (120) after adjusting the angle. The lathe tool (11) is fixedly mounted on the bottom of the adjusting base (2).

2. The universal angle turning tool extension holder according to claim 1, characterized in that, The adjusting base connecting part (120) is provided with a concave semi-circular arc-shaped boss mounting groove (121), and the top of the adjusting base (2) is a semi-circular arc-shaped annular boss (220) with the same diameter as the boss mounting groove (121).

3. The universal angle turning tool extension holder according to claim 2, characterized in that, A pointer (123) is provided on the outside of the adjustment base connecting part (120), and an angle scale (222) is provided on the outside of the annular boss (220) to cooperate with the pointer (123).

4. A universal angle turning tool extension holder according to claim 3, characterized in that, The angle scale (222) includes scale lines and scale values.

5. A universal angle turning tool extension holder according to claim 3, characterized in that, The accuracy of the angle scale (222) is 0.5 degrees.

6. A universal angle turning tool extension holder according to claim 2, characterized in that, The locking device includes a locking block (6) and a shoulder screw (9). The top of the locking block (6) is an arc-shaped structure that fits against the inner arc of the annular boss (220). A threaded hole I (1211) is provided on the boss mounting groove (121), a square groove (221) is provided on the annular boss (220), and a pin hole II (610) is provided on the locking block (6). The shoulder screw (9) passes through the pin hole II (610) and the square groove (221) in sequence and is threaded to the threaded hole I (1211).

7. A universal angle turning tool extension holder according to claim 6, characterized in that, The rotation drive device includes a worm (3) and a worm wheel (4) that mesh with each other. The worm wheel (4) is fixedly connected to the top of the adjusting base (2), and the worm (3) is rotatably mounted on the fixed seat (1).

8. A universal angle turning tool extension holder according to claim 7, characterized in that, The worm (3) is mounted on the fixed seat (1) via a bearing (8).

9. A universal angle turning tool extension holder according to claim 7, characterized in that, A handwheel (7) is fixedly connected to one end of the worm (3).

10. A universal angle turning tool extension holder according to claim 1, characterized in that, The lathe tool holder connecting part (110) is provided with a tapered hole (111).

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