Inner hole turning tool of numerical control lathe

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a numerical control lathe inner hole turning tool which comprises an installation tool apron and a tool bar, the tool bar is fixed to one side of the installation tool apron, an extension plate is arranged at the end, away from the installation tool apron, of the tool bar, and installation grooves are symmetrically formed in the two sides of the end of the extension plate. A movable rod is mounted in the mounting groove through a pin shaft and penetrates through the mounting groove, a notch groove is formed in the surface of the end of the movable rod, a tool bit is fixed to the inner side of the notch groove through a bolt, convex teeth are evenly arranged on the surface of the side, away from the notch groove, of the movable rod, and the convex teeth are arranged on the inner side of the mounting groove; the two tool bits are installed on the movable rods capable of rotating by an angle respectively, the inclination angle of the two movable rods is adjusted according to the actual use condition so that the distance between the two tool bits can be controlled, then the tool can adapt to machining work of inner holes of different sizes, the use flexibility of the tool is improved, and it is guaranteed that the two tool bits are evenly stressed.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine processing, and in particular relates to an inner hole turning tool for a numerically controlled lathe. Background Art

[0002] CNC lathe is one of the most widely used CNC machine tools at present. It is mainly used for cutting inner and outer cylindrical surfaces of shaft parts or disk parts, inner and outer conical surfaces of arbitrary taper angles, complex rotational inner and outer curved surfaces, and cylindrical and conical threads. It can also perform grooving, drilling, reaming, boring and boring, etc. When using a CNC lathe to turn an inner hole, it is necessary to first process the workpiece with a drill bit, and then expand the hole in and out, so the corresponding inner hole turning tool is required.

[0003] For example, a CNC turning tool installation shock-absorbing mechanism disclosed in the prior art (patent announcement number: CN 213997826U3) has two cutter heads symmetrically arranged at the end of the tool rod, which can make the force on both sides of the tool rod end uniform during operation to effectively protect the tool rod. However, the two cutter heads are in a fixed state. Different processing needs require different sizes when expanding the hole. Therefore, the two fixed cutter heads cannot meet different production needs. When large-sized holes need to be processed, they can only be offset to one side, so that one tool is stressed and the other is not, resulting in uneven force on the tool rod. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a CNC lathe inner hole turning tool, which can adjust the distance between two tool heads to adapt to different inner hole turning processes and improve the flexibility of tool use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A CNC lathe inner hole turning tool comprises a mounting tool seat and a tool rod, the tool rod is fixed on one side of the mounting tool seat, an extension plate is provided at the end of the tool rod away from the mounting tool seat, mounting grooves are symmetrically provided on both sides of the end of the extension plate, a movable rod is installed inside the mounting groove through a pin shaft, the movable rod passes through the mounting groove, a notch groove is provided on the surface of the end of the movable rod, a tool head is fixed on the inner side of the notch groove by bolts, convex teeth are evenly provided on the surface of the movable rod away from the notch groove, the convex teeth are placed on the inner side of the mounting groove, a slideway is provided inside the extension plate, the slideway is placed between the two mounting grooves, a bidirectional gear rod is slidably installed inside the slideway, and the two sides of the bidirectional gear rod are respectively meshed with the convex teeth on both sides.

[0007] Furthermore, an adjusting bolt is screwed on the end surface of the extension plate, the end of the adjusting bolt is installed on the end of the bidirectional gear rod through a bearing, and a hexagon socket head is provided at one end of the adjusting bolt away from the bidirectional gear rod.

[0008] Furthermore, one side surface of the knife rod is uniformly engraved with indicating scales.

[0009] Furthermore, a fixing plate is arranged on one side of the knife seat, and a sleeve is sleeved on the surface of one end of the knife rod away from the extension plate, and the sleeve is inserted into the inner side of the knife seat.

[0010] Furthermore, locking bolts are evenly screwed on the upper surface of the mounting tool seat, and through holes corresponding to the locking bolts are opened on the arc surface of the sleeve. The locking bolts pass through the through holes on the sleeve surface and contact the upper surface of the tool rod.

[0011] Furthermore, the cross section of the knife rod is elliptical, and the upper and lower surfaces are planes.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the two cutter heads are respectively mounted on movable rods that can rotate at an angle, and the inclination angle of the two movable rods is adjusted according to actual usage conditions to control the distance between the two cutter heads, thereby adapting to the processing of internal holes of different sizes, improving the flexibility of tool use, ensuring that the two cutter heads are subjected to uniform force to ensure the stability of the tool rod, and ensuring that the two cutter heads are always in a symmetrical state when adjusted, thereby ensuring the accuracy of hole processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the cutter head installation structure of the utility model;

[0015] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of area A.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Install the knife seat; 2. Fixing plate; 3. Locking bolt; 4. Sleeve; 5. Knife rod; 6. Indicator scale; 7. Extension plate; 8. Mounting slot; 9. Movable rod; 10. Notch slot; 11. Knife head; 12. Protruding teeth; 13. Slide; 14. Adjusting bolt; 15. Bidirectional gear rod. DETAILED DESCRIPTION

[0018] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0019] like Figure 1-Figure 3As shown, a CNC lathe inner hole turning tool comprises a mounting tool seat 1 and a tool rod 5, the tool rod 5 is fixed on one side of the mounting tool seat 1, an extension plate 7 is arranged at one end of the tool rod 5 away from the mounting tool seat 1, and mounting grooves 8 are symmetrically arranged on both sides of the end of the extension plate 7, a movable rod 9 is installed inside the mounting groove 8 through a pin shaft, the movable rod 9 passes through the mounting groove 8, and the movable rod 9 can rotate around its mounting pin shaft at a certain angle, a notch groove 10 is opened on the surface of the end of the movable rod 9, and a tool head 11 is fixed to the inner side of the notch groove 10 by bolts, and the tool head 11 must be installed to ensure that its end The part exceeds the end of the movable rod 9, and the surface of the movable rod 9 on one side away from the notch groove 10 is evenly provided with convex teeth 12, and the convex teeth 12 are placed on the inner side of the installation groove 8. A slideway 13 is opened inside the extension plate 7, and the slideway 13 is placed between the two installation grooves 8. A two-way gear rod 15 is slidably installed inside the slideway 13, and the two sides of the two-way gear rod 15 are respectively meshed with the convex teeth 12 on both sides to ensure the synchronous and symmetrical movement of the two movable rods 9, and then to ensure that the positions of the two cutter heads 11 always remain corresponding to ensure the processing accuracy, so as to adapt to the one-time rapid processing of holes of different sizes.

[0020] Among them, an adjusting bolt 14 is screwed on the end surface of the extension plate 7, and the end of the adjusting bolt 14 is installed on the end of the two-way gear rod 15 through a bearing. The end of the adjusting bolt 14 away from the two-way gear rod 15 is provided with a hexagonal head. The adjusting bolt 14 can be rotated from the outside through the cooperation of the hexagonal wrench and the hexagonal head, and then the two-way gear rod 15 can be driven to move. The slideway 13 can limit the two-way gear rod 15 to only axial sliding, so as to ensure the stability of the movement of the two-way gear rod 15.

[0021] like Figure 1 As shown, the surface of one side of the knife rod 5 is evenly engraved with indicator scales 6, which is convenient for observing the distance between the knife head 11 and the mounting knife seat 1 to prevent the knife rod 5 from rotating due to excessive distance and from colliding due to insufficient distance.

[0022] like Figure 1 As shown, a fixing plate 2 is provided on one side of the mounting tool holder 1, and a sleeve 4 is sleeved on the surface of the end of the tool rod 5 facing away from the extension plate 7. The sleeve 4 is inserted into the inner side of the mounting tool holder 1. The sleeve 4 is in T-shaped contact, and the end size is larger, so that the sleeve 4 can be limited when it is installed.

[0023] Among them, locking bolts 3 are evenly screwed on the upper surface of the mounting tool seat 1, and through holes corresponding to the locking bolts 3 are opened on the arc surface of the sleeve 4. The locking bolts 3 pass through the through holes on the surface of the sleeve 4 and contact with the upper surface of the tool rod 5 to effectively fix the tool rod 5. The cross-section of the tool rod 5 is elliptical, and the upper and lower surfaces are flat.

[0024] The working principle of the utility model is as follows: first, the turning tools within different specification ranges are adjusted according to different inner hole processing sizes, and then the end of the tool rod 5 is removed into the interior of the sleeve 4, and the upper surface is kept corresponding to the through hole on the surface of the sleeve 4, and then the extension plate 7 is inserted into the interior of the mounting tool holder 1, and the through holes on the surface of the sleeve 4 are penetrated by screwing a plurality of locking bolts 3, and the tool rod 5 is squeezed, so that the tool rod 5 and the mounting tool holder 1 are effectively fixed, and the distance between the cutter head 11 and the mounting tool holder 1 can be controlled, and the distance can be observed by the indicating scale 6 to ensure that the distance is greater than the depth of the hole to be processed, and then the adjusting bolt 14 is rotated to control the relative position of the bidirectional gear rod 15, and the two movable rods 9 are controlled to rotate through the mutual engagement of the bidirectional gear rod 15 and the convex teeth 12, so as to ensure that the two movable rods 9 are rotated to move in a mirror direction to control the distance between the two cutter heads 11, so as to facilitate the rapid processing of specific holes.

[0025] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A CNC lathe internal hole turning tool, comprising a mounting tool holder (1) and a tool bar (5), characterized in that: The knife rod (5) is fixed on one side of the knife seat (1). An extension plate (7) is provided at one end of the knife rod (5) away from the knife seat (1). Mounting grooves (8) are symmetrically provided on both sides of the end of the extension plate (7). A movable rod (9) is installed inside the mounting groove (8) through a pin shaft. The movable rod (9) passes through the mounting groove (8). A notch groove (10) is provided on the end surface of the movable rod (9). A knife head (11) is fixed inside the notch groove (10) through a bolt. Convex teeth (12) are evenly provided on the surface of the movable rod (9) away from the notch groove (10). The convex teeth (12) are placed inside the mounting groove (8). A slideway (13) is provided inside the extension plate (7). The slideway (13) is placed between the two mounting grooves (8). A bidirectional toothed rod (15) is slidably installed inside the slideway (13). Both sides of the bidirectional toothed rod (15) are respectively meshed with the convex teeth (12) on both sides.

2. The internal hole turning tool for a CNC lathe according to claim 1, characterized in that: An adjusting bolt (14) is screwed onto the end surface of the extension plate (7), the end of the adjusting bolt (14) is mounted on the end of the bidirectional gear rod (15) via a bearing, and a hexagon socket head is provided at one end of the adjusting bolt (14) away from the bidirectional gear rod (15).

3. The internal hole turning tool for a CNC lathe according to claim 1, characterized in that: One side surface of the knife rod (5) is evenly engraved with indicating scales (6).

4. The internal hole turning tool for a CNC lathe according to claim 1, characterized in that: A fixing plate (2) is arranged on one side of the mounting knife seat (1), and a sleeve (4) is sleeved on the surface of one end of the knife rod (5) away from the extension plate (7), and the sleeve (4) is inserted into the inner side of the mounting knife seat (1).

5. The inner hole turning tool of a CNC lathe according to claim 4, characterized in that: The upper surface of the mounting knife seat (1) is evenly screwed with locking bolts (3), and the arc surface of the sleeve (4) is provided with through holes corresponding to the locking bolts (3). The locking bolts (3) penetrate the through holes on the surface of the sleeve (4) and contact the upper surface of the knife rod (5).

6. The internal hole turning tool for a CNC lathe according to claim 1, characterized in that: The knife rod (5) has an elliptical cross section, and the upper and lower surfaces are planes.

Images