Key grinding device for deep hole boring machine for finishing the inner hole of pipe

Abstract

The utility model relates to a deep hole boring machine key device for repairing product pipe fitting inner hole on deep hole boring machine, including hollow ring and fastening bolt, hollow ring inner hole is two different diameter's step, diameter D1 is 5 10mm than workpiece end portion outer diameter, diameter D2 is same with workpiece inner hole diameter D3, and hollow ring end portion knocks have radial groove, and the outside circle is uniformly distributed with 8 thread holes, will fix the hollow ring with fastening bolt on the workpiece outside circle, adjust the device inner hole center, workpiece inner hole center, boring bar center to concentric, rotate workpiece, and open into workpiece inner hole with boring cutter body even speed simultaneously, and the radial groove at the end of the hollow ring can repair and grind the outer diameter of the supporting wooden key to be consistent with the diameter of the workpiece inner hole, after boring cutter body opens into workpiece inner hole, the supporting wooden key can stably support boring cutter body, and boring cutter can carry out smooth cutting to workpiece inner hole, reach the purpose of repairing and processing to product workpiece inner hole.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and relates to a wood grinding key device for repairing the inner hole of a finished pipe fitting on a deep hole boring machine. Background Technology

[0002] Currently, when the inner hole of a long pipe fitting is damaged or blocked during use or debugging, it needs to be re-machined on a deep hole boring machine. Before deep hole machining, eight radial grooves must be chiseled into the workpiece end face near the inner hole using a flat chisel. This ensures that the outer diameter of the support wooden key mounted on the boring bar, originally larger than the inner hole, is ground to the same diameter as the inner hole during the boring bar's entry into the workpiece's inner hole. Only then can the support wooden key stably support the boring bar after it enters the workpiece's inner hole, facilitating smooth cutting. However, the end face of a long pipe fitting is already formed, and radial grooves cannot be chiseled into the workpiece end face for grinding the support wooden key on the boring bar, otherwise it will damage the end face of the workpiece and affect its use. Therefore, a device is needed to grind the outer diameter of the support wooden key on the boring bar to match the inner hole of the workpiece, ensuring that the support wooden key can support the boring bar when it enters the workpiece's inner hole, thus facilitating stable machining of the workpiece's inner hole. Utility Model Content

[0003] The purpose of this invention is to overcome the problem that when repairing the inner hole of a finished pipe fitting, it is necessary to grind the supporting wooden key of the boring tool body of the deep hole boring machine to match the inner diameter of the workpiece, but the end face of the finished workpiece must not be damaged. The invention provides a grinding wooden key device for repairing the inner hole of a finished pipe fitting that can be fixed on the finished workpiece. The device can tap a radial groove on the end face to grind the outer diameter of the supporting wooden key of the boring tool body to match the inner hole, so as to ensure that the supporting wooden key can stably support the boring tool body and facilitate the cutting process of the tool on the boring tool body.

[0004] The purpose of this utility model is achieved as follows: A wood grinding key device for a deep hole boring machine for repairing the inner hole of finished pipe fittings includes a hollow ring and fastening bolts installed on the hollow ring. The inner hole of the hollow ring is a stepped shape with two different diameters. The inner diameter D1 is larger than the outer diameter of the workpiece end, and the inner diameter D2 is the same as the inner hole diameter D3 of the workpiece. The hollow ring end has radial grooves, and the outer circle of the hollow ring is evenly distributed with threaded holes for installing fastening bolts.

[0005] The hollow ring has two stepped inner holes with different diameters, and its inner diameter D1 is 5-10 mm larger than the outer diameter of the workpiece end.

[0006] The hollow ring has eight threaded holes evenly distributed on its outer circumference for installing fastening bolts.

[0007] In use, first adjust the workpiece to be concentric with the boring bar, then fix the hollow ring to the outer circle of the workpiece with fastening bolts. Adjust the inner hole of the hollow ring to be concentric with the inner hole of the workpiece by adjusting the support bolts. The outer diameter of the support key on the boring bar body is larger than the inner diameter of the workpiece. Rotate the workpiece and at the same time open the boring bar body into the inner hole of the workpiece. Grind the support key through the radial groove on the end face of the hollow ring until the outer diameter of the support key is consistent with the inner hole of the workpiece. After the boring bar body is opened into the inner hole of the workpiece, the support key can stably support the boring bar body, and the boring bar can smoothly cut the inner hole of the workpiece.

[0008] The present invention will achieve the following technical effects by adopting the above technical solution:

[0009] By utilizing a wood key grinding device for deep hole boring machines used for repairing the inner holes of finished pipe fittings, the disadvantageous situation of having to hammer the radial groove on the end face of the workpiece to grind the support wood key when re-machining the inner hole of the finished workpiece on a deep hole boring machine is avoided. The wood key can be ground by grinding the radial groove on the end face of the hollow ring fixed to the end of the workpiece. The outer diameter of the wood key is ground to match the inner hole of the workpiece. After the boring bar body is opened into the inner hole of the workpiece, the support wood key can stably support the boring bar body, and the boring bar can smoothly cut the inner hole of the workpiece. This protects the workpiece and achieves the purpose of grinding the support wood key. Attached Figure Description

[0010] Figure 1 A schematic diagram of the grinding key device used in a deep hole boring machine for repairing the inner hole of finished pipe fittings.

[0011] Figure 2 A cross-sectional view of the grinding key device used in a deep hole boring machine for repairing the inner hole of finished pipe fittings.

[0012] Figure 3 A schematic diagram showing the use and assembly of a wood key device for a deep hole boring machine used to repair the inner hole of finished pipe fittings.

[0013] In the diagram Figure 1 In the diagram: 1 is a hollow ring; 2 is a fastening bolt; 3 is a radial groove. Figure 2 In the diagram: No. 4 is the finished pipe fitting that needs repair; No. 5 is the boring bar; No. 6 is the boring tool body; No. 7 is the support wooden key; No. 8 is the boring tool. Detailed Implementation

[0014] like Figure 1 As shown, a wood grinding key device for a deep hole boring machine for repairing the inner hole of finished pipe fittings includes a hollow ring 1 and a fastening bolt 2 mounted on the hollow ring.

[0015] The inner hole of the hollow ring 1 is a stepped shape with two different diameters. The inner diameter D1 is 5-10 mm larger than the outer diameter of the workpiece end. The inner diameter D2 is the same as the inner diameter D3 of the workpiece. The hollow ring end has a radial groove 3, and there are 8 threaded holes evenly distributed on the outer circle.

[0016] There are a total of 8 fastening bolts 2, which are screwed into 8 bolt holes on the outer circle of the hollow ring 1.

[0017] In use, first accurately measure the inner diameter D3 of the finished pipe fitting 4 and the outer diameter of the workpiece near the end. Select a suitable blank to machine the hollow ring 1. The inner diameter D1 of the hollow ring is machined to be 5-10mm larger than the outer diameter of the workpiece, and the inner diameter D1 of the hollow ring is machined to be the same as the inner diameter D3 of the workpiece. Drill and tap 8 evenly distributed threaded holes on the outer circle of the hollow ring at the inner diameter D1. Use a flat chisel to tap 8 radial grooves 3 on the end face of the hollow ring.

[0018] Adjust the inner hole of the workpiece and the axis of the boring bar 5 to be concentric. Then, fix the hollow ring to the outer circle of the end of the workpiece with fastening bolts. Adjust the inner hole of the hollow ring to be concentric with the inner hole of the workpiece by fastening bolts. Mount the support wooden key 7 and the boring bar 8 on the boring bar body 6. Rotate the workpiece and at the same time, move the boring bar body into the inner hole of the workpiece at a uniform speed. Grind the support wooden key through the radial groove on the end face of the hollow ring. Grind the outer diameter of the support wooden key to be consistent with the inner hole of the workpiece. After the boring bar body moves into the inner hole of the workpiece, the support wooden key can stably support the boring bar body. The boring bar can then smoothly cut the inner hole of the workpiece, achieving the purpose of repairing the inner hole of the finished workpiece.

Claims

1. A wood-grinding key device for a deep hole boring machine for repairing the inner hole of finished pipe fittings, comprising a hollow ring (1) and fastening bolts (2) mounted on the hollow ring (1), characterized in that: The inner hole of the hollow ring (1) is two steps with different diameters. The inner diameter D1 is larger than the outer diameter of the workpiece end, and the inner diameter D2 is the same as the inner diameter D3 of the workpiece. The hollow ring end has radial grooves (3) and threaded holes for installing fastening bolts (2) are evenly distributed on the outer circle of the hollow ring.

2. The wood grinding key device for a deep hole boring machine for repairing the inner hole of a finished pipe fitting as described in claim 1, characterized in that: The inner hole of the hollow ring (1) is a stepped shape with two different diameters, and the inner diameter D1 is 5-10 mm larger than the outer diameter of the workpiece end.

3. The wood grinding key device for a deep hole boring machine for repairing the inner hole of a finished pipe fitting as described in claim 1, characterized in that: The hollow ring has eight threaded holes evenly distributed on its outer circumference for installing fastening bolts.

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