Adjustable movable boring machine cutter bar seat

Abstract

The utility model discloses an adjustable movable boring machine cutter bar seat which comprises an assembly seat, an installation table capable of sliding linearly is installed on the assembly seat through a sliding rail structure, a boring cutter bar is installed on the installation table through a cutter rest, the boring cutter bar extends into the cutter rest and is fixed through a pin, and bolt holes distributed at equal intervals are formed in the assembly seat. Positioning bolts are arranged on the mounting table and are in threaded connection with the corresponding bolt holes to fix the mounting table, the mounting table is rotatably connected with the knife rest through a rotary knife structure, the rotary knife structure comprises a connecting shaft, a worm gear and a worm, the connecting shaft is rotatably connected with the knife rest, the worm gear is arranged on the outer side of the knife rest, and the worm gear is arranged on the outer side of the worm gear. A worm meshed with the worm gear is installed on the outer side of the connecting shaft. According to the adjustable movable boring machine cutter bar seat, the mounting table slides through the sliding rail structure to enable the boring cutter bar to move, the distance of the axis of a boring cutter is adjusted, the boring distance is compensated, and the adjustable movable boring machine cutter bar seat can adapt to machining of workpieces with larger apertures.

Description

Technical Field

[0001] The utility model relates to the technical field of a boring cutter connection structure, in particular to a boring machine tool bar seat with an adjustable movable boring cutter. Background Art

[0002] A machine tool that mainly uses a boring tool to bore pre-made holes in a workpiece. Usually, the rotation of the boring tool is the main motion, and the movement of the boring tool or the workpiece is the feed motion. It is mainly used to process high-precision holes or to complete the finishing of multiple holes in one positioning. In addition, it can also be used for processing other processing surfaces related to hole finishing. Using different tools and accessories, it can also perform drilling, milling, and cutting. The processing accuracy and surface quality are higher than those of a drilling machine. The boring machine is the main equipment for processing large box parts, threads, and processing outer circles and end faces.

[0003] The boring tool and the tool holder are usually installed in a fixed manner. To meet the processing requirements, the tool holder will pass through the workpiece. When boring, rough and fine processing, and expanding the hole, the machine tool tool needs to be replaced. The replacement of the tool requires re-tooling and recalibration. The tool length is limited. When processing workpieces with larger apertures, problems such as insufficient distance are prone to occur. At the same time, if the other side needs to process a countersink during the boring process, the tool holder and the boring tool will block the measurement of the aperture to be processed, resulting in measurement errors. For this reason, a boring machine tool holder with an adjustable movable boring tool is manufactured to meet the needs of processing distance compensation. Utility Model Content

[0004] The utility model aims to provide an adjustable movable boring machine tool bar seat to solve the problems raised in the above background technology.

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

[0006] The adjustable movable boring machine tool bar seat includes an assembly seat, the assembly seat is installed with a linearly slidable mounting table through a slide rail structure, the mounting table is installed with a boring bar through a tool holder, the boring bar extends into the tool holder and is fixed by pins, the assembly seat is provided with bolt holes distributed at equal distances, and the mounting table is provided with positioning bolts, which are threadedly connected with corresponding bolt holes to fix the mounting table.

[0007] As a further solution of the utility model: the mounting platform and the tool holder are rotatably connected via a rotary tool structure;

[0008] The rotary cutter structure includes a connecting shaft, a worm wheel and a worm. The connecting shaft is rotatably connected to the tool holder. A worm wheel is arranged on the outside of the tool holder, and a worm meshing with the worm wheel is installed on the outside of the connecting shaft.

[0009] As a further solution of the utility model: a sleeve is arranged on the outside of the connecting shaft, the sleeve is located on the outside of the worm wheel, the sleeve and the worm are rotatably connected via a bearing, and the top of the worm extends to the outside of the sleeve.

[0010] As a further solution of the utility model: a rotation limiter is further provided between the connecting shaft and the tool holder, and the centers of the connecting shaft and the tool holder are on the same axis;

[0011] The rotation limiter includes a positioning shaft and a travel groove. The positioning shaft is arranged on the contact surface between the connecting shaft and the tool holder. The travel groove is opened on the contact surface between the tool holder and the connecting shaft. The positioning shaft is located in the travel groove. When the connecting shaft and the tool holder rotate relative to each other, the moving trajectory of the positioning shaft matches the shape of the travel groove.

[0012] As a further solution of the utility model: the moving stroke of the positioning shaft in the stroke groove determines the rotation angle of the tool holder on the connecting shaft. When the boring tool on the boring bar is parallel to the direction of the slide rail structure, the positioning shaft limits the positioning angle of the tool holder at one end of the stroke groove.

[0013] As a further solution of the utility model: an inner sleeve shaft is provided at the contact end between the tool holder and the connecting shaft, a sleeve ring is installed on the connecting shaft, a travel groove is opened in the inner sleeve shaft, the inner side of the inner sleeve shaft is rotatably connected to the sleeve ring through an inner ring bearing, and the outer side of the inner sleeve shaft is rotatably connected to the connecting shaft through an outer ring bearing.

[0014] As a further solution of the utility model: the moving stroke of the positioning shaft in the stroke groove satisfies the relative rotation angle of the connecting shaft and the tool holder to be 180 degrees.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The adjustable movable boring machine tool bar seat moves the boring tool bar through the sliding mounting table of the slide rail structure, adjusts the distance of the boring tool axis, and compensates for the boring hole distance, so that it can adapt to the processing of workpieces with larger apertures.

[0017] 2. The adjustable movable boring machine tool holder, through the cooperation of the rotary cutter structure and the rotary limiter, makes the tool reset angle accurate, and the tool holder is fixed and stable after positioning, and will not swing or shake during operation, thereby improving the stability of the tool holder and tool during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an adjustable movable boring machine tool bar seat;

[0019] Figure 2 The present invention is a schematic diagram of a rotary cutter structure in a tool bar seat of an adjustable movable boring machine;

[0020] Figure 3 The present invention is an exploded view of a rotary cutter structure in a tool holder of an adjustable movable boring machine;

[0021] Figure 4 It is a rear exploded view of a rotary cutter structure in a tool bar seat of an adjustable movable boring machine;

[0022] Figure 5 The present invention is a schematic diagram of the structure of a travel groove in a tool bar seat of an adjustable movable boring machine.

[0023] In the figure: 1. Assembly seat; 2. Slide rail structure; 3. Mounting table; 4. Connecting shaft; 5. Tool holder; 6. Boring bar; 7. Travel groove; 8. Worm; 9. Outer ring bearing; 10. Worm wheel; 11. Sleeve ring; 12. Positioning shaft; 13. Inner ring bearing; 14. Inner sleeve shaft. DETAILED DESCRIPTION

[0024] See also Figures 1 to 5 In the embodiment of the utility model, the tool bar seat of the boring machine can be adjusted, including an assembly seat 1, the assembly seat 1 is installed with a mounting table 3 that can slide linearly through a slide rail structure 2, the mounting table 3 is installed with a boring bar 6 through a tool holder 5, the boring bar 6 extends into the tool holder 5 and is fixed by pins, and bolt holes distributed at equal distances are opened on the assembly seat 1, and a positioning bolt is provided on the mounting table 3. The positioning bolt fixes the mounting table 3 by threading with the corresponding bolt hole, and the assembly seat 1 is fixed on the driving shaft of the boring machine, which can be welded or clamped. After the installation is completed, the coaxiality of the boring bar 6 during the rotation process is determined. When the boring hole distance compensation is required, the bolts are removed, and the slide rail structure 2 slides the mounting table 3 to move the boring bar 6, adjust the distance of the boring tool axis, and compensate for the boring hole distance, so that it can adapt to the processing of workpieces with larger apertures.

[0025] In a preferred embodiment, the mounting platform 3 and the tool holder 5 are rotatably connected via a rotary tool structure;

[0026] The rotary cutter structure includes a connecting shaft 4, a worm wheel 10 and a worm 8. The connecting shaft 4 is rotatably connected to the tool holder 5. A worm wheel 10 is arranged on the outside of the tool holder 5. A worm 8 meshing with the worm wheel 10 is installed on the outside of the connecting shaft 4. When the lead angle of the worm 8 is less than the equivalent friction angle between the meshing gear teeth, the mechanism has self-locking property and can achieve reverse self-locking, that is, only the worm 8 can drive the worm wheel 10, but the worm wheel 10 cannot drive the worm 8. The drive of the worm 8 is assembled according to the needs, which can be manually twisted with a wrench, or It is driven by an assembled stepper motor. The installation of the stepper motor requires the addition of a brush ring to keep the stepper motor powered when the boring machine drive shaft rotates. The mounting table 3 and the tool holder 5 can rotate relative to each other, and the rotation angle can be controlled by the worm gear 10 and the worm 8 structure. When processing the countersink on the other side or a hole structure with a diameter larger than the hole on the side close to the machine head, there is no need to flip the workpiece or disassemble the tool. The tool holder 5 can be flipped to flip one end of the tool head to the side close to the axis, leaving enough space for the tool to retract, which will not block the measurement of the aperture and reduce processing errors.

[0027] In a preferred embodiment, a sleeve is provided on the outside of the connecting shaft 4, and the sleeve is located on the outside of the worm wheel 10. The sleeve and the worm 8 are rotatably connected through a bearing, and the top of the worm 8 extends to the outside of the sleeve. The worm wheel 10 and the worm 8 are meshingly transmitted. The installation of the sleeve can prevent dust and iron filings from falling into the tooth groove and wearing or jamming the meshing structure.

[0028] In a preferred embodiment, a rotation limiter is further provided between the connecting shaft 4 and the tool holder 5, and the centers of the connecting shaft 4 and the tool holder 5 are on the same axis;

[0029] The rotation limiter includes a positioning shaft 12 and a stroke groove 7. The positioning shaft 12 is provided on the contact surface between the connecting shaft 4 and the tool holder 5. The stroke groove 7 is provided on the contact surface between the tool holder 5 and the connecting shaft 4. The positioning shaft 12 is located in the stroke groove 7. When the connecting shaft 4 and the tool holder 5 rotate relative to each other, the moving trajectory of the positioning shaft 12 matches the shape of the stroke groove 7. The moving stroke of the positioning shaft 12 in the stroke groove 7 determines the rotation angle of the tool holder 5 on the connecting shaft 4. When the boring tool on the boring tool rod 6 is parallel to the direction of the slide rail structure 2, the positioning shaft 12 limits the positioning angle of the tool holder 5 at one end of the stroke of the stroke groove 7. An inner sleeve shaft 14 is provided at the contact end between the tool holder 5 and the connecting shaft 4. The connecting shaft 4 is provided with a sleeve ring 11. The stroke groove 7 is provided in the inner sleeve shaft 14. The inner side of the inner sleeve shaft 14 is rotatably connected to the sleeve ring 11 through an inner ring bearing 13. The outer side of the sleeve shaft 14 is rotatably connected to the connecting shaft 4 through the outer ring bearing 9. The moving stroke of the positioning shaft 12 in the stroke groove 7 satisfies the relative rotation angle of the connecting shaft 4 and the tool holder 5 of 180 degrees. There is a certain gap in the driving mode of the worm wheel 10 and the worm 8, which makes a certain error when the tool is flipped, causing the tool head to swing and shake, affecting the processing effect and the tool life. For this reason, the rotation angle of the connecting shaft 4 and the tool holder 5 is limited by the positioning shaft 12 and the stroke groove 7. First, it can play a positioning role, so that the tool can remain in place when it is flipped to the processing position, and no boring error will occur. Second, the positioning shaft 12 and the stroke groove 7 are limited as well as the torsional force of the worm wheel 10 and the worm 8 to form a clamping fixation, and the tool holder 5 will not shake due to the gap in gear meshing, making the processing action of the tool holder 5 more stable.

[0030] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0031] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An adjustable boring machine tool bar seat, comprising an assembly seat (1), characterized in that: The assembly seat (1) is mounted with a linearly slidable mounting platform (3) via a slide rail structure (2); the mounting platform (3) is mounted with a boring bar (6) via a tool holder (5); the boring bar (6) extends into the tool holder (5) and is fixed via a pin; the assembly seat (1) is provided with bolt holes distributed at equal distances; the mounting platform (3) is provided with positioning bolts; the positioning bolts are threadedly connected to corresponding bolt holes to fix the mounting platform (3).

2. The adjustable boring machine tool bar seat according to claim 1, characterized in that: The mounting platform (3) and the tool holder (5) are rotatably connected via a rotary tool structure; The rotary cutter structure comprises a connecting shaft (4), a worm wheel (10) and a worm (8); the connecting shaft (4) is rotatably connected to a cutter holder (5); a worm wheel (10) is arranged on the outside of the cutter holder (5); and a worm (8) meshing with the worm wheel (10) is installed on the outside of the connecting shaft (4).

3. The adjustable boring machine tool bar seat according to claim 2, characterized in that: A sleeve is provided on the outside of the connecting shaft (4), the sleeve is located on the outside of the worm wheel (10), the sleeve and the worm (8) are rotatably connected via a bearing, and the top of the worm (8) extends to the outside of the sleeve.

4. The adjustable boring machine tool bar seat according to claim 2, characterized in that: A rotation limiter is also provided between the connecting shaft (4) and the tool holder (5), and the centers of the connecting shaft (4) and the tool holder (5) are on the same axis; The rotation limiter comprises a positioning shaft (12) and a travel groove (7); the positioning shaft (12) is arranged on the contact surface between the connecting shaft (4) and the tool holder (5); the travel groove (7) is arranged on the contact surface between the tool holder (5) and the connecting shaft (4); the positioning shaft (12) is located in the travel groove (7); and when the connecting shaft (4) and the tool holder (5) rotate relative to each other, the movement trajectory of the positioning shaft (12) matches the shape of the travel groove (7).

5. The adjustable boring machine tool bar seat according to claim 4, characterized in that: The movement stroke of the positioning shaft (12) in the stroke groove (7) determines the rotation angle of the tool holder (5) on the connecting shaft (4); when the boring tool on the boring bar (6) is parallel to the direction of the slide rail structure (2), the positioning shaft (12) limits the positioning angle of the tool holder (5) at one end of the stroke of the stroke groove (7).

6. The adjustable boring machine tool bar seat according to claim 4 or 5, characterized in that: An inner sleeve shaft (14) is provided at the contact end between the tool holder (5) and the connecting shaft (4); a sleeve ring (11) is installed on the connecting shaft (4); a travel groove (7) is provided in the inner sleeve shaft (14); the inner side of the inner sleeve shaft (14) is rotatably connected to the sleeve ring (11) via an inner ring bearing (13); and the outer side of the inner sleeve shaft (14) is rotatably connected to the connecting shaft (4) via an outer ring bearing (9).

7. The adjustable boring machine tool bar seat according to claim 5, characterized in that: The movement stroke of the positioning shaft (12) in the stroke groove (7) satisfies the relative rotation angle of 180 degrees between the connecting shaft (4) and the tool holder (5).

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