High coaxiality hole boring tool bar

Abstract

This utility model discloses a high coaxiality boring bar, including a boring bar body, a clamping block, a tool holder, and a locking screw. Several tool holders are detachably mounted on the boring bar body, and the tool holders are locked to the boring bar body by the clamping block and the locking screw. This utility model utilizes the coaxial machining of tools rotating along the same shaft system. The tool holders are detachably mounted on the boring bar body. When boring holes of different diameters are required, the tool holders can be disassembled and reassembled using the clamping block and locking screw, and different lengths of tool holders can be replaced to adjust the rotation diameter. It has the advantages of simple manufacturing process, no special operation requirements, and good applicability and scalability.

Description

Technical Field

[0001] This utility model relates to a high coaxiality hole boring bar. Background Technology

[0002] In mechanical manufacturing, it is difficult to ensure the coaxiality of boring holes with different diameters on the same shaft system. This is because after machining the first hole, the tool needs to be removed and changed (the diameter of the first hole changes). After changing the tool, it is difficult to return the spindle to its original coordinate position. Therefore, it is necessary to use a dial indicator for calibration before reinstalling the tool, which is time-consuming and labor-intensive. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides a high coaxiality hole boring bar with simple structure and high working efficiency.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is: a high coaxiality hole boring bar, including a boring bar body, a clamping block, a tool holder, and a locking screw. Several tool holders are detachably installed on the boring bar body, and the tool holders are locked to the boring bar body by the clamping block and the locking screw.

[0005] The aforementioned high coaxiality hole boring bar has a cylindrical body on the left and a frustum-shaped structure on the right, with an axial through slot in the middle of the cylindrical body.

[0006] The aforementioned high coaxiality hole boring bar includes a frame, a cutting tool, and a limiting block. The frame is cylindrical, with the cutting tool fixedly mounted on the top and a ring-shaped limiting block fixedly mounted circumferentially in the middle. The bottom of the frame has a threaded hole. After the lower part of the frame is inserted into the through groove in the middle of the cylinder, it is locked with a clamping block and a locking screw.

[0007] The aforementioned high coaxiality hole boring bar has an arc-shaped bottom limit block that mates with the cylinder of the boring bar body.

[0008] In the aforementioned high coaxiality hole boring bar, the clamping block is annular with an arc-shaped bottom that mates with the cylinder of the boring bar body.

[0009] The beneficial effects of this utility model are as follows: This utility model utilizes the rotation axis of the tool in the same shaft system hole to maintain coaxial processing, and the tool holder is detachably installed on the boring bar body. When boring processing of different hole diameters is required, the tool holder can be disassembled and assembled by clamping blocks and locking screws, and the rotation diameter can be adjusted by replacing the tool holder with a tool holder of different lengths. It has the advantages of simple manufacturing process, no special operation requirements, good applicability and promotion. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 for Figure 1 The right view.

[0012] Figure 3 for Figure 1 A bottom view.

[0013] Figure 4 This is a schematic diagram of the boring bar body.

[0014] Figure 5 This is a schematic diagram of the tool holder structure.

[0015] Figure 6 This is a schematic diagram of the clamping block.

[0016] Figure 7 A schematic diagram of the feed for "positive and negative" compensation of the cutting tool. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-3 As shown, a high coaxiality hole boring bar includes a boring bar body 1, a clamping block 2, a tool holder 3, and a locking screw 4. Several tool holders 3 are detachably mounted on the boring bar body 1, and the tool holders 3 are locked to the boring bar body 1 by the clamping block 2 and the locking screw 4.

[0019] like Figure 4 As shown, the boring bar body 1 has a cylinder 5 on the left and a frustum-shaped structure 6 on the right. The cylinder 5 has an axial through groove 7 in the middle.

[0020] like Figure 5 As shown, the tool holder 3 includes a frame 8, a blade 9, and a limiting block 10. The frame 8 is cylindrical, with the blade 9 fixedly mounted on the top. A ring-shaped limiting block 10 is fixedly mounted circumferentially in the middle of the frame 8. A threaded hole 11 is opened at the bottom of the frame 8. After the lower part of the frame 8 is inserted into the through groove 7 in the middle of the cylinder 5, it is locked with a clamping block 2 and a locking screw 4. The bottom of the limiting block 10 is arc-shaped and cooperates with the cylinder 5 of the boring bar body 1.

[0021] like Figure 6 As shown, the clamping block 2 is ring-shaped, the bottom of the clamping block 2 is arc-shaped, and it cooperates with the cylinder 5 of the boring bar body 1.

[0022] The working process of this utility model is as follows: First, install the blade 9 on the top of the frame 8. Then, adjust the position of the tool holder 3 in the through groove 7 according to the inner hole diameter of the product. Next, perform a trial cut of a whole circle diameter (1mm infeed). Check the actual size of the whole circle diameter. Then, compare it with the inner hole diameter of the product to perform "positive and negative" compensation of the tool infeed. Once in place, tighten the locking screw 4 to carry out the inner hole machining of the product.

[0023] When using this product, if the inner diameter of the product is of high precision, the tool tip can be contacted by a lever dial indicator to advance the tool. After locking the lever, observe the change in the lever dial indicator value. If there is a change, the tool needs to be readjusted until the tool tip advance is accurate.

Claims

1. A high coaxiality hole boring tool holder, characterized in that: It includes a boring bar body, a clamping block, a tool holder, and a locking screw. Several tool holders are detachably mounted on the boring bar body, and the tool holders are locked to the boring bar body by the clamping block and the locking screw.

2. The high coaxiality hole boring bar according to claim 1, characterized in that: The boring bar body has a cylindrical shape on the left and a frustum-shaped structure on the right, with an axial through slot in the middle of the cylindrical shape.

3. The high coaxiality hole boring bar according to claim 2, characterized in that: The tool holder includes a frame, a blade, and a limiting block. The frame is cylindrical, with the blade fixedly mounted on the top of the frame and an annular limiting block fixedly mounted circumferentially in the middle of the frame. The bottom of the frame has a threaded hole. After the lower part of the frame is inserted into the through groove in the middle of the cylinder, it is locked with a clamping block and a locking screw.

4. The high coaxiality hole boring bar according to claim 3, characterized in that: The bottom of the limiting block is arc-shaped and matches the cylinder of the boring bar body.

5. The high coaxiality hole boring bar according to claim 3, characterized in that: The clamping block is ring-shaped with an arc-shaped bottom, and it matches the cylinder of the boring bar body.

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