A tube bridge boring

Abstract

This application relates to a tubular bridge boring bar, used in the field of machining. It includes a tool holder connected to a machining equipment, and a bridge tube connected to the tool holder via a connecting unit. Tool holders are located at both ends of the bridge tube, and cutting inserts are mounted on each of the two tool holders. The technical advantages of this application are: starting the machining equipment rotates the tool holder, which in turn drives the bridge tube to move synchronously. During the movement of the bridge tube, the cutting inserts on the tool holders at both ends of the bridge tube cut the workpiece's machining surface. Because the bridge tube has a hollow tubular structure, the overall weight of the structure can be reduced when the spindle weight of the machining equipment is limited, thus reducing the impact of the tubular bridge boring bar's weight on the spindle's driving capability and improving machining efficiency and quality.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to a tubular bridge boring machine. Background Technology

[0002] A bridge boring bar is a tool used in machining. Due to its high machining efficiency and high precision, it plays an important role in the field of machining.

[0003] CN207205309U discloses a bridge-type boring tool, including a tool holder, a boring bridge structure, two tool holders, and two tool clamping devices respectively disposed on the two tool holders. The upper end face of the tool holder is provided with a first groove, the boring bridge structure is disposed in the first groove by screws, the upper end face of the boring bridge structure is provided with a second groove, and the left and right parts of the second groove are provided with positioning racks that mesh with each other on the lower end face of the two tool holders.

[0004] During use, the aforementioned bridge-type boring tool suffers from reduced spindle driving capacity when connected to the machining equipment spindle due to the solid rectangular structure of the boring bridge, its heavy weight, and limited overhang length. This results in low machining efficiency and quality. Summary of the Invention

[0005] To address the problem in related technologies where the bridge structure of a bridge boring tool is a solid cuboid structure, resulting in heavy weight and limited overhang, which reduces the spindle's driving capability when the bridge boring tool is connected to the machining equipment spindle, leading to low machining efficiency and quality, this application provides a tubular bridge boring tool with the following technical solution: It includes a tool holder connected to the machining equipment, the tool holder being connected to a bridge tube via a connecting unit, and tool holders at both ends of the bridge tube, each tool holder having a cutting tool mounted on it.

[0006] In one specific implementation, the bridge tube is made of aluminum.

[0007] In one specific implementation, the connecting unit includes a connecting seat disposed on the tool holder, and the bridge tube is disposed at the end of the connecting seat opposite to the tool holder.

[0008] In one specific implementation, the connecting seat has a limiting groove that matches the bridge tube on its surface facing the bridge tube. The bridge tube is located in the limiting groove and contacts the groove wall. The connecting seat is provided with a fixing component for fixing the bridge tube.

[0009] In one specific implementation, the fixing component includes a plurality of connecting bolts passing through the connecting seat and the bridge tube, with connecting nuts threaded onto the outer edges of the plurality of connecting bolts, and the connecting seat abutting between the plurality of connecting nuts and the plurality of connecting bolts.

[0010] In one specific implementation scheme, a plurality of mounting bolts are provided on the tool holder, and a plurality of mounting grooves matching the mounting bolts are provided on the connecting seat. The ends of the plurality of mounting bolts facing the connecting seat are respectively threaded into the mounting grooves.

[0011] In one specific implementation, a positioning block is provided on the surface of the tool holder facing the connecting seat, and a positioning groove matching the positioning block is opened on the surface of the connecting seat facing the tool holder, and the positioning block is inserted into the positioning groove.

[0012] In one specific implementation, transition plates are provided at both ends of the bridge tube, and the two tool holders are respectively disposed on the two transition plates.

[0013] In one specific implementation, the transition plate is made of steel.

[0014] In one specific implementation scheme, a number of fixing bolts are passed through the transition plate, and a number of fixing grooves matching the fixing bolts are opened on the bridge tube. The ends of the fixing bolts facing the fixing grooves are threaded into the fixing grooves.

[0015] In summary, this application has the following beneficial technical effects: starting the machining equipment drives the tool holder to rotate, the tool holder drives the bridge tube to move synchronously, and during the movement of the bridge tube, the cutting tools on the tool holders at both ends of the bridge tube cut the machining surface of the workpiece. Since the bridge tube is a tubular hollow structure, under the condition of limited spindle weight of the machining equipment, the overall structure weight can be reduced, the influence of the self-weight of the tubular bridge boring machine on the spindle driving capability of the machining equipment can be reduced, and the machining efficiency and machining quality can be improved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 2 This is a structural schematic diagram illustrating the positioning block in the embodiments of this application.

[0018] Reference numerals in the attached diagram: 1. Tool holder; 2. Bridge tube; 3. Tool holder; 4. Blade; 5. Connecting seat; 6. Limiting groove; 7. Connecting bolt; 8. Connecting nut; 9. Mounting bolt; 10. Positioning block; 11. Transition plate; 12. Fixing bolt. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0020] This application discloses a tubular bridge boring machine.

[0021] Reference Figure 1 and Figure 2 The tubular bridge boring bar includes a tool holder 1 connected to the spindle of the machining equipment. The tool holder 1 is connected to a bridge tube 2 via a connecting unit. The bridge tube 2 is made of aluminum, which has a relatively low density, only about 1 / 3 that of steel. This allows the aluminum bridge tube 2 to maintain sufficient load-bearing capacity while significantly reducing its weight. Tool holders 3 are installed at both ends of the bridge tube 2, and each tool holder 3 is equipped with a cutting tool 4. In this embodiment, the tool holders 3 can be boring tool holders from related technologies.

[0022] Therefore, starting the machining equipment drives the tool holder 1 to rotate, and the tool holder 1 drives the bridge tube 2 to move synchronously. During the movement of the bridge tube 2, the cutting blades 4 on the tool holders 3 at both ends of the bridge tube 2 cut the machining surface of the workpiece. Since the bridge tube 2 is a tubular hollow structure, the overall weight of the structure can be reduced when the spindle of the machining equipment has limited weight. This reduces the impact of the weight of the tubular bridge boring machine on the spindle drive capability of the machining equipment, thereby improving machining efficiency and machining quality.

[0023] Reference Figure 1 and Figure 2 The connecting unit includes a connecting seat 5 disposed on the tool holder 1, and a bridge tube 2 disposed at the end of the connecting seat 5 away from the tool holder 1. The connecting seat 5 enhances the connection rigidity between the tool holder 1 and the bridge tube 2. In this embodiment, the outer edge of the connecting seat 5 can be provided with a relief groove, and the groove wall of the relief groove is provided with a rounded chamfer. The rounded chamfer can reduce stress concentration, thereby improving the structural rigidity of the connecting seat 5.

[0024] Reference Figure 1 and Figure 2 The connecting seat 5 has a limiting groove 6 on the surface facing the bridge tube 2, which matches the size of the bridge tube 2. In this embodiment, the limiting groove 6 is an arc-shaped groove. The bridge tube 2 is located in the limiting groove 6 and contacts the groove wall of the limiting groove 6. The limiting groove 6 plays a limiting role in the position of the bridge tube 2, reducing the possibility of the bridge tube 2's position shifting, and further improving the stability of the connection between the connecting seat 5 and the bridge tube 2.

[0025] Reference Figure 1 and Figure 2 The connecting seat 5 is provided with a fixing component for fixing the bridge tube 2. The fixing component includes several connecting bolts 7 that pass through the connecting seat 5 and the bridge tube 2. The several connecting bolts 7 are arranged in an array on the connecting seat 5. The outer edges of the several connecting bolts 7 are threaded with connecting nuts 8. The connecting seat 5 is pressed between the several connecting nuts 8 and the several connecting bolts 7.

[0026] Therefore, the operator can remove the connecting seat 5 from the bridge tube 2 by unscrewing the bolts, achieving a detachable connection between the connecting seat 5 and the bridge tube 2, which provides greater flexibility. In this embodiment, several connecting bolts 7 are respectively fitted with annular washers on their outer edges. These annular washers are respectively pressed between the connecting seat 5 and the connecting nut 8. The annular washers can distribute the pressure applied by the connecting nut 8, reducing the possibility of excessive pressure concentrating in a local area of ​​the connecting seat 5, and at the same time reducing direct wear between the connecting nut 8 and the connecting seat 5.

[0027] Reference Figure 1 and Figure 2 The tool holder 1 is provided with several mounting bolts 9, and the connecting seat 5 is provided with several mounting grooves that match the size of the mounting bolts 9. The ends of the mounting bolts 9 facing the connecting seat 5 are respectively threaded into the mounting grooves. In this embodiment, the mounting bolts 9 are arranged in a circumferential array along the tool holder 1. The circumferential array arrangement of the mounting bolts 9 can ensure that the tool holder 1 is evenly stressed on the connecting seat 5, which helps to optimize the stress distribution. This distribution method reduces local deformation or damage caused by excessive stress at a single point, improves the stability and reliability of the connection between the tool holder 1 and the connecting seat 5, and thus improves the strength and durability of the connection.

[0028] Reference Figure 1 and Figure 2 A positioning block 10 is fixedly connected to the surface of the tool holder 1 facing the connecting seat 5. The surface of the connecting seat 5 facing the tool holder 1 has a positioning groove that matches the size of the positioning block 10. The positioning block 10 is inserted into the positioning groove, and the positioning groove limits the position of the positioning block 10, so that the relative position between the tool holder 1 and the connecting seat 5 can be quickly determined. When the positioning block 10 is inserted into the positioning groove, several mounting bolts 9 are aligned with several mounting grooves, so that the operator can connect the tool holder 1 and the connecting seat 5 by bolt connection.

[0029] Reference Figure 1 and Figure 2 The bridge tube 2 has transition plates 11 installed at both ends, and two tool holders 3 are respectively mounted on the two transition plates 11. In this embodiment, the transition plates 11 are made of steel. Due to its high strength and rigidity, steel can withstand large loads and stresses, which improves the stability of the tool holders 3 mounted on the transition plates 11. Adding transition plates 11 to the bridge tube 2 and then installing tool holders 3 further improves the structural rigidity of the bridge tube 2, thereby improving the stability during workpiece processing.

[0030] Reference Figure 1 and Figure 2Two placement slots matching the size of the transition plate 11 are provided on the outer edge of the bridge tube 2. The two transition plates 11 are respectively placed in the placement slots, which limit the position of the transition plates 11 and improve the stability of the placement position of the transition plates 11. Several fixing bolts 12 are passed through the transition plates 11, and several fixing slots matching the size of the fixing bolts 12 are provided on the bottom of the placement slots. The ends of the fixing bolts 12 facing the fixing slots are threaded into the fixing slots. Therefore, the operator can remove the transition plates 11 from the bridge tube 2 by removing the bolts, so that the transition plates 11 and the tool holder 3 on the transition plates 11 can be removed, which is more flexible and facilitates the replacement of the blades 4 after they wear out.

[0031] The implementation principle of this application embodiment is as follows: starting the machining equipment drives the tool holder 1 to rotate, and the tool holder 1 drives the bridge tube 2 to move synchronously. During the movement of the bridge tube 2, the cutting blades 4 on the tool holders 3 at both ends of the bridge tube 2 cut the machining surface of the workpiece. Since the bridge tube 2 is a tubular hollow structure and is made of aluminum, the overall weight of the structure can be reduced when the spindle of the machining equipment has limited weight. This reduces the impact of the self-weight of the tubular bridge boring machine on the spindle driving capability of the machining equipment, thereby improving machining efficiency and machining quality.

[0032] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A tube bridge bore, characterized by: It includes a tool holder (1) connected to the processing equipment. The tool holder (1) is connected to a bridge tube (2) through a connecting unit. Both ends of the bridge tube (2) are respectively provided with tool holders (3), and the two tool holders (3) are respectively provided with blades (4). The connecting unit includes a connecting seat (5) disposed on the tool holder (1), and the bridge tube (2) is disposed at one end of the connecting seat (5) away from the tool holder (1); the connecting seat (5) has a limiting groove (6) matching the bridge tube (2) on its surface facing the bridge tube (2), the bridge tube (2) is located in the limiting groove (6) and contacts the groove wall of the limiting groove (6), and the connecting seat (5) is provided with a fixing component for fixing the bridge tube (2); The bridge tube (2) is provided with transition plates (11) at both ends, and the two blade holders (3) are respectively set on the two transition plates (11); The bridge tube (2) is a hollow tubular structure and is made of aluminum.

2. The pipe bridge borer of claim 1, wherein: The fixing assembly includes a plurality of connecting bolts (7) passing through the connecting seat (5) and the bridge tube (2), and the outer edges of the plurality of connecting bolts (7) are respectively threaded with connecting nuts (8), and the connecting seat (5) is pressed between the plurality of connecting nuts (8) and the plurality of connecting bolts (7).

3. The pipe bridge boring of claim 1, wherein: The handle (1) is provided with a number of mounting bolts (9), and the connecting seat (5) is provided with a number of mounting grooves that match the mounting bolts (9). The ends of the mounting bolts (9) facing the connecting seat (5) are respectively threaded into the mounting grooves.

4. The pipe bridge boring of claim 1, wherein: The tool handle (1) has a positioning block (10) on the surface facing the connecting seat (5), and the connecting seat (5) has a positioning groove that matches the positioning block (10) on the surface facing the tool handle (1), and the positioning block (10) is inserted into the positioning groove.

5. The pipe bridge boring of claim 1, wherein: The transition plate (11) is made of steel.

6. The pipe bridge borer of claim 1, wherein: The transition plate (11) is provided with a number of fixing bolts (12), and the bridge tube (2) is provided with a number of fixing grooves that match the fixing bolts (12). The fixing bolts (12) are threaded into the fixing grooves at one end.

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