Cutter of center lathe for machining inner hole arc groove

Abstract

The utility model belongs to the technical field of machine clamping tools, and particularly discloses a tool for machining an inner hole arc groove of a center lathe, which comprises a connecting shaft, a connecting sleeve, a turning tool, a pull rod and a sliding block, and the connecting shaft is sequentially provided with a fixing block, a threaded shaft and a mounting shaft from right to left; the fixing block is installed on a lathe saddle, the threaded shaft is sleeved with a connecting sleeve, and a first open groove is formed in the left end face of the installation shaft. A transverse threaded hole is formed in the center of the end face of the connecting sleeve. A guide rail is arranged on the outer wall of the connecting sleeve, and the sliding block is installed on the guide rail. A first through hole is formed in the front end face of the turning tool, and the turning tool is clamped in the first open groove. A blade is arranged at one end of the turning tool, and a second connecting block is arranged at the other end of the turning tool; the two ends of the pull rod are connected with the second connecting block and the sliding block through pins correspondingly. According to the cutter, the feeding speed is controlled in a threaded shaft screwing-in mode, misoperation can be effectively prevented, cutter damage is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine - clamped cutting tools, and particularly relates to a cutting tool for a common lathe to process an inner - hole arc groove. Background Art

[0002] A lathe is a commonly - used machine tool in machining. Although with the progress of numerical control technology, the application of common lathes is less and less, some rough - machining processes are still completed by common lathes.

[0003] Processing an inner - hole arc groove is a conventional process for a lathe, and the accuracy requirement for the inner - hole arc groove is not high. When using a numerical - control machine tool to process the inner - hole arc groove, the processing accuracy is improved, but the processing time is longer and the cost is higher. When using a common machine tool to process the inner - hole arc groove, it is difficult to observe during operation, the processing difficulty is relatively large, and the technical level of the operator is relatively high. In the prior art, finished cutting tools are often used in the common processing process. However, the production of finished cutting tools is relatively cumbersome. If they are damaged during use, the repair is relatively difficult, wasting processing time. Content of the Utility Model

[0004] Aiming at the problems in the background art, the utility model provides a cutting tool for a common lathe to process an inner - hole arc groove. This cutting tool uses common cutting tools, is convenient to replace, and has a low cost.

[0005] To achieve the above object, the utility model adopts the following technical solutions: A cutting tool for a common lathe to process an inner - hole arc groove includes a connecting shaft, a connecting sleeve, a turning tool, a pull rod, and a slider. The connecting shaft is successively provided with a fixed block, a threaded shaft, and a mounting shaft from right to left. The fixed block is installed on the lathe tool rest. A connecting sleeve is sleeved on the threaded shaft. A first opening groove is provided on the left - end face of the mounting shaft, and a first pin hole is provided on the front - end face of the first opening groove.

[0006] The connecting sleeve is a circular tube. A transverse threaded hole is provided at the center of the end face of the connecting sleeve, and the threaded hole is adapted to the threaded shaft of the connecting shaft. A guide rail is provided on the outer wall of the connecting sleeve, and the slider is installed on the guide rail.

[0007] A first through - hole is provided on the front - end face of the turning tool. The turning tool is clamped in the first opening groove and is connected to the connecting shaft through pin A. One end of the turning tool is provided with a cutting blade, and the other end of the turning tool is provided with a second connecting block.

[0008] The pull rod is a straight rod, and both ends of the pull rod are respectively connected to the second connecting block and the slider through pins.

[0009] The width of the first opening groove is greater than the thickness of the turning tool.

[0010] The described slider includes a snap ring and a third connecting block; the snap ring is an "O"-shaped ring with an open lower end, and the snap ring is clamped on the guide rail; the third connecting block is connected to the left end face of the snap ring, a third opening groove is provided on the left end face of the third connecting block, the width of the third opening groove is greater than the thickness of the end of the pull rod, and a third pin hole is provided on the front end face of the third opening groove.

[0011] The cross-section of the described guide rail is "T"-shaped, the lower end of the guide rail is connected to the connecting sleeve, and the guide rail is arranged at one end of the outer wall of the connecting sleeve.

[0012] A second opening groove is provided on the upper end face of the second connecting block, the width of the second opening groove is greater than the thickness of the end of the pull rod, and a second pin hole is provided on the front end face of the second opening groove.

[0013] The pin A penetrates through the first pin hole and the first through hole.

[0014] The described pull rod is a circular straight rod, mounting blocks A are respectively provided at both ends of the pull rod, one end of the pull rod is clamped in the third opening groove and is connected by a pin; the other end of the pull rod is clamped in the second opening groove and is connected by a pin.

[0015] Anti-slip threads are provided on the outer side wall of the described connecting sleeve.

[0016] The beneficial effects of the present utility model: The present utility model provides a tool for a common lathe to process an inner hole arc groove. This tool uses a common tool, is convenient to replace, and has a low cost; this tool uses a screw shaft to screw in to control the feed speed, can effectively prevent misoperation, avoid tool damage, and improve the service life. Description of the Drawings

[0017] Figure 1 is the processing schematic diagram of the present utility model.

[0018] Figure 2 is the schematic diagram of the present utility model.

[0019] Figure 3 is the front view of the connecting shaft.

[0020] Figure 4 is the top view of the connecting shaft.

[0021] Figure 5 is the front view of the connecting sleeve.

[0022] Figure 6 is the sectional view of the connecting sleeve.

[0023] Figure 7 is the front view of the turning tool.

[0024] Figure 8 is the side view of the turning tool.

[0025] Figure 9 This is the front view of the slider.

[0026] Figure 10 This is the top view of the slider.

[0027] In the figure: 1. connecting shaft, 2. connecting sleeve, 3. turning tool, 4. pull rod, 5. pin A, 6. slider, 7. workpiece, 11. fixing block, 12. threaded shaft, 13. mounting shaft, 14. first pin hole, 15. first opening groove, 21. anti-slip pattern, 22. guide rail, 23. threaded hole, 31. blade, 32. first through hole, 33. second connecting block, 34. second pin hole, 35. second opening groove, 61. snap ring, 62. third connecting block, 63. third pin hole, 64. third opening groove. Detailed implementation manners

[0028] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] The following further elaborates in detail on the specific implementation manners of the present utility model with reference to the accompanying drawings: A tool for a common lathe to machine an inner hole arc groove includes a connecting shaft 1, a connecting sleeve 2, a turning tool 3, a pull rod 4 and a slider 6. The connecting shaft 1 is successively provided with a fixing block 11, a threaded shaft 12 and a mounting shaft 13 from right to left. The fixing block 11 is installed on the lathe tool rest. The connecting sleeve 2 is sleeved on the threaded shaft 12. A first opening groove 15 is provided on the left end face of the mounting shaft 13. The width of the first opening groove 15 is greater than the thickness of the turning tool 3. A first pin hole 14 is provided on the front end face of the first opening groove 15.

[0030] The described connecting sleeve 2 is a circular tube. Anti-slip threads 21 are provided on the outer side wall of the connecting sleeve 2. The anti-slip threads 21 can facilitate the operator's use when the connecting sleeve 2 rotates and prevent slipping. A transverse threaded hole 23 is provided at the center of the end face of the connecting sleeve 2, and the threaded hole 23 is adapted to the threaded shaft 12 of the connecting shaft 1. A guide rail 22 is provided on the outer wall of the connecting sleeve 2, and the slider 6 is installed on the guide rail 22. The slider 6 includes a snap ring 61 and a third connecting block 62. The snap ring 61 is an "O"-shaped ring with an open lower end, and the snap ring 61 is clamped on the guide rail 22. The cross-section of the guide rail 22 is "T"-shaped. The lower end of the guide rail 22 is connected to the connecting sleeve 2, and the guide rail 22 is provided at one end of the outer wall of the connecting sleeve 2. During actual use, the slider 6 slides on the guide rail 22 as the connecting sleeve 2 rotates and remains in a plane with the pull rod 4. The third connecting block 62 is connected to the left end face of the snap ring 61. A third opening groove 64 is provided on the left end face of the third connecting block 62. The width of the third opening groove 64 is greater than the thickness of the end of the pull rod 4. A third pin hole 63 is provided on the front end face of the third opening groove 64.

[0031] A first through hole 32 is provided on the front end face of the described turning tool 3. The turning tool 3 is clamped in the first opening groove 15 and connected to the connecting shaft 1 through a pin A 5. The pin A 5 passes through the first pin hole 14 and the first through hole 32. To improve the general performance of the turning tool 3, multiple first through holes 32 can be provided. The distance from the center of each first through hole 32 to the tip of the cutting blade 31 is the radius of the arc processed by the first through hole 32. During actual use, if it is necessary to change the machining radius of the arc, only the position of the first through hole 32 needs to be changed.

[0032] One end of the described turning tool 3 is provided with a cutting blade 31, and the other end of the turning tool 3 is provided with a second connecting block 33. A second opening groove 35 is provided on the upper end face of the second connecting block 33. The width of the second opening groove 35 is greater than the thickness of the end of the pull rod 4. A second pin hole 34 is provided on the front end face of the second opening groove 35.

[0033] The described pull rod 4 is a circular straight rod. Mounting blocks A are respectively provided at both ends of the pull rod 4. One end of the pull rod 4 is clamped in the third opening groove 64 and connected through a pin. The other end of the pull rod 4 is clamped in the second opening groove 35 and connected through a pin. During use, the connecting sleeve 2 is rotated, and the connecting sleeve 2 moves left and right on the threaded shaft 12. While rotating the connecting sleeve 2, the slider 6 slides on the guide rail 22 to keep the slider 6 and the pull rod 4 in a plane. When the connecting sleeve 2 moves, it drives the pull rod 4 to move, and the pull rod 4 drives the turning tool 3 to move, thereby driving the cutting blade 31 end of the turning tool 3 to perform an arc movement to achieve the purpose of machining an inner hole arc.

[0034] The using process of the utility model is as follows: First, install the fixing block 11 of the connecting shaft 1 on the lathe tool rest and fix it; then assemble all the other components of the tool together for inner hole arc machining. When machining, first move the left end of this tool from the Z-axis direction of the lathe to the inner hole machining position of the workpiece 7, and then perform layer-by-layer machining in the X-axis direction. When machining, first move the tip of the turning tool 3 to the left end of this tool. At this time, the connecting sleeve 2 is located at the rightmost end of the threaded shaft 12; rotate the connecting sleeve 2 to make the connecting sleeve 2 move to the left end of the threaded shaft 12. At this time, the tip of the turning tool 3 moves in an arc from left to right for cutting operation. When the movement of the tip of the turning tool 3 is completed, one cutting is completed; then move the connecting sleeve 2 to the initial position, operate the machine tool to make this tool move a cutting depth in the X-axis direction, and rotate the connecting sleeve 2 again for the second cutting. Repeat the above steps until the cutting is completed. When it is necessary to change the machining radius of the arc, remove the turning tool 3 from the first opening groove 15, and then replace it with a suitable first through hole 32 and install it in the first opening groove 15 to change the radius of the cutting arc.

[0035] The above are only the preferred embodiments of the utility model, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0036] The parts not detailed in the utility model are the prior art.

Claims

1. A tool for processing an inner hole arc groove on a common lathe, comprising a connecting shaft (1), a connecting sleeve (2), a turning tool (3), a pull rod (4) and a slider (6), characterized in that: The described connecting shaft (1) is successively provided with a fixing block (11), a threaded shaft (12) and a mounting shaft (13) from right to left; the fixing block (11) is installed on the lathe tool rest, a connecting sleeve (2) is sleeved on the threaded shaft (12), a first opening groove (15) is arranged on the left end face of the mounting shaft (13), and a first pin hole (14) is arranged on the front end face of the first opening groove (15). The connecting sleeve (2) is a circular tube, a transverse threaded hole (23) is arranged at the center of the end face of the connecting sleeve (2), and the threaded hole (23) is adapted to the threaded shaft (12) of the connecting shaft (1); a guide rail (22) is arranged on the outer wall of the connecting sleeve (2), and the slider (6) is installed on the guide rail (22). A first through hole (32) is arranged on the front end face of the turning tool (3), the turning tool (3) is clamped in the first opening groove (15) and is connected to the connecting shaft (1) through a pin A (5); a cutting blade (31) is arranged at one end of the turning tool (3), and a second connecting block (33) is arranged at the other end of the turning tool (3). The pull rod (4) is a straight rod, and both ends of the pull rod (4) are respectively connected to the second connecting block (33) and the slider (6) through pins.

2. The tool for machining an inner hole arc groove on a common lathe according to claim 1, characterized in that: The width of the first opening groove (15) is greater than the thickness of the turning tool (3).

3. The tool for machining an inner hole arc groove on a common lathe according to claim 1, characterized in that: The slider (6) includes a snap ring (61) and a third connecting block (62); the snap ring (61) is an "O"-shaped ring with an open lower end, and the snap ring (61) is clamped on the guide rail (22); the third connecting block (62) is connected to the left end face of the snap ring (61), a third opening groove (64) is arranged on the left end face of the third connecting block (62), the width of the third opening groove (64) is greater than the thickness of the end of the pull rod (4), and a third pin hole (63) is arranged on the front end face of the third opening groove (64).

4. A tool for machining an inner hole arc groove on an ordinary lathe according to claim 1, characterized in that: The cross section of the guide rail (22) is "T"-shaped, the lower end of the guide rail (22) is connected to the connecting sleeve (2), and the guide rail (22) is arranged at one end of the outer wall of the connecting sleeve (2).

5. The tool for machining an inner hole arc groove on a common lathe according to claim 1, characterized in that: A second opening groove (35) is arranged on the upper end face of the second connecting block (33), the width of the second opening groove (35) is greater than the thickness of the end of the pull rod (4), and a second pin hole (34) is arranged on the front end face of the second opening groove (35).

6. The tool for machining an inner hole arc groove on a common lathe according to claim 1, wherein: The pin A (5) penetrates through the first pin hole (14) and the first through hole (32).

7. The tool for machining an inner hole arc groove on an ordinary lathe according to claim 3 or 5, characterized in that: The pull rod (4) is a circular straight rod, mounting blocks A are respectively arranged at both ends of the pull rod (4), one end of the pull rod (4) is clamped in the third opening groove (64) and is connected through a pin; the other end of the pull rod (4) is clamped in the second opening groove (35) and is connected through a pin.

8. The tool for machining an inner hole arc groove on a common lathe according to claim 1, characterized in that: Anti-slip lines (21) are arranged on the outer side wall of the connecting sleeve (2).

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