Improved tool holder device for a boring machine

Abstract

The utility model relates to an improved tool bar device for boring machine belongs to lathe equipment technical field of machining industry industry, technical scheme contains connecting rod (1), tool bar (3), tool rest (6) and tool disc (5), the rear end of tool bar (3) is equipped with connecting rod (1), and connecting rod (1) is inserted into the inner hole of tool rest (6) and is fastened through bolt (10), and tool rest (6) is fixed on the tool disc (5) of boring machine (4) through bolt, a plurality of lightening through -hole (7) are evenly distributed to tool bar (3) along the axial direction, and the front end of tool bar (3) is equipped with tool. The utility model has the following positive effect: through setting connecting rod at the rear end of tool bar, inserting connecting rod into the inner hole of matched tool rest and fastening through bolt, the depth of tool bar can be increased, and then deep hole is processed, and at the same time, lightening through -hole is equipped on tool bar, and lightening through -hole reduces the weight of tool bar, prevents resonance and guarantees accuracy.

Description

Technical Field

[0001] This utility model relates to an improved tool holder device for boring machines, belonging to the technical field of machine tool equipment in the machining industry. Background Technology

[0002] A boring bar is a machine tool used to bore pre-drilled holes in a workpiece. Typically, the boring bar's rotation is the primary motion, while the movement of the boring bar or workpiece is the feed motion. It is mainly used for machining high-precision holes or for finishing multiple holes in a single positioning operation. Additionally, it can be used to machine other surfaces related to hole finishing.

[0003] When using a boring machine, hole diameter machining is common. However, when faced with deep hole machining, the length of the tool holder limits the machining process, and tool holder vibration makes it difficult to guarantee machining accuracy. Utility Model Content

[0004] The purpose of this invention is to provide an improved tool holder device for boring machines, which solves the problem of difficult deep hole machining on boring machines, and also solves the problem of difficulty in ensuring machining accuracy due to tool holder vibration.

[0005] The technical solution of this utility model is: An improved tool holder device for a boring machine includes a connecting rod, a tool holder, a tool holder, and a tool head. The tool holder has a connecting rod at its rear end, which is inserted into the inner hole of the tool holder and fastened with bolts. The tool holder is fixed on the tool head of the boring machine. The tool holder has multiple weight-reducing through holes evenly distributed along the axial direction, and a cutting tool is provided at its front end.

[0006] Furthermore, the front end of the tool holder is provided with a tool groove, and the two side walls of the tool groove are provided with mounting holes one and two for mounting the tool.

[0007] Furthermore, the connecting rod and the tool bar are welded together or are an integral structure.

[0008] The positive effects of this utility model are as follows: by setting a connecting rod at the rear end of the tool holder, inserting the connecting rod into the inner hole of the matching tool holder and fastening it with bolts, the depth of the tool holder can be increased, thereby machining deep holes; at the same time, the tool holder is provided with a weight reduction through hole, which reduces the weight of the tool holder, prevents resonance, and ensures accuracy. Attached Figure Description

[0009] Figure 1 This is a front view of the connection between the connecting rod and the tool holder in this utility model; Figure 2 This is a side view of the connection between the connecting rod and the tool holder in this utility model; Figure 3 This is a rear view of the connection between the connecting rod and the tool holder of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Connecting rod; 2. Tool groove; 3. Tool holder; 4. Boring machine; 5. Tool head; 6. Weight reduction through hole; 7. Mounting hole one; 8. Mounting hole two; 9. Bolt; 10. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments: See attached document Figure 1-4 An improved tool holder device for a boring machine includes a connecting rod 1, a tool holder 3, a tool holder 6, and a tool disc 5. The connecting rod 1 is provided at the rear end of the tool holder 3. The connecting rod 1 and the tool holder 3 are welded and fixed or are an integral structure. The connecting rod 1 is inserted into the inner hole of the tool holder 6 and fastened by bolts 10. The tool holder 6 is fixed to the tool disc 5 of the boring machine 4 by bolts. The tool holder 3 has multiple weight-reducing through holes 7 evenly distributed along the axial direction. The front end of the tool holder 3 is provided with a cutting tool.

[0011] The tool holder 6 is a cylindrical structure with an inner hole for connecting to the connecting rod 1 and bolt holes on its side wall. The inner hole of the tool holder 6 has the same shape as the connecting rod 1. At least one side of the connecting rod 1 is flat. The connecting rod 1 is inserted into the inner hole of the tool holder 6 and fastened with bolts 10. The bottom of the bolts 10 rests on the flat surface of the connecting rod 1.

[0012] The front end of the tool holder 3 is provided with a tool groove 2. The two side walls of the tool groove 2 are respectively provided with two mounting holes 8 and two mounting holes 9 for mounting the tool. One mounting hole 8 corresponds to one mounting hole 9 and their center lines coincide.

[0013] In this embodiment: a tool holder 6 is set on the tool head 5, and the tool shank 3 is connected to the tool holder 6 via a connecting rod 1, increasing the overhang of the tool shank 3. The overhang can be adjusted to 800mm, increasing the machining depth. After the tool is mounted in the tool groove 2, the boring machine 4 is started to perform machining, completing the deep hole machining. This embodiment adopts a segmented feed strategy: the speed is 40rpm during roughing and 100rpm during finishing. This utility model reduces the weight of the tool shank 3 by using a weight-reducing through hole 7 to prevent resonance and ensure accuracy.

[0014] Tests showed that the tool holder 3 achieved a surface roughness of Ra3.2um when machining a 320mm diameter deep hole, effectively reducing tool wear.

Claims

1. An improved tool holder device for a boring machine, characterized in that: It includes a connecting rod (1), a tool holder (3), a tool holder (6) and a tool disc (5). The tool holder (3) has a connecting rod (1) at its rear end. The connecting rod (1) is inserted into the inner hole of the tool holder (6) and fastened by bolts (10). The tool holder (6) is fixed on the tool disc (5) of the boring machine (4). The tool holder (3) has multiple weight-reducing through holes (7) evenly distributed along the axial direction. The tool holder (3) has a cutting tool at its front end.

2. The improved tool holder device for a boring machine according to claim 1, characterized in that: The front end of the tool holder (3) is provided with a tool groove (2), and the two side walls of the tool groove (2) are provided with mounting holes one (8) and mounting holes two (9) for mounting the tool.

3. An improved tool holder device for a boring machine according to claim 1 or 2, characterized in that: The connecting rod (1) and the knife bar (3) are welded together or are an integral structure.

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