Composite multi-step deep hole drill

Abstract

The utility model discloses a composite multi-step deep hole drill which comprises a cutter bar, a deep hole drill bit, a bottom plate, a fixing seat, a butt joint plate and a feeding unit, the cutter bar is coaxially fixed at the bottom of the deep hole drill bit, the bottom plate is fixed at the bottom of the cutter bar and connected to the butt joint plate, and the butt joint plate is connected to the fixing seat in a sliding mode; the feeding unit comprises a linkage rod, a driven rod and a driving unit, one end of the linkage rod is rotationally connected to the fixing base, and one end of the driven rod is rotationally connected to the butt joint plate. The self-locking mechanism has the advantages that the feeding unit is arranged, the driving unit in the feeding unit drives the linkage rod and the driven rod to be in linkage, a lever self-locking structure is formed by combining the driving unit and the driving rod, and the self-locking structure can be formed after the feeding unit pushes the deep hole drill bit to a certain position; the air cylinder is prevented from continuously bearing large reverse thrust, mechanical fatigue of the air cylinder is effectively avoided, and the air cylinder is simple, efficient and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to a deep hole drill, concretely to a composite multistage step deep hole drill belongs to deep hole drill technical field. BACKGROUND

[0002] The hole with the ratio of hole depth and hole diameter greater than six is usually called deep hole in mechanical processing, the deep hole drill is a drill bit specially used for processing deep hole, which can be divided into two categories of external chip removal and internal chip removal, and the deep hole drill also has various models, and the step type deep hole drill is one of them.

[0003] However, the existing step type deep hole drill still has some problems, for example, in the composite multistage step deep hole drill cutter disclosed in the publication No. CN213224450U, although the machining efficiency can be improved, the precision of the three-step hole of the machined workpiece can be ensured, and the advantages of simple structure, convenient implementation and low cost are achieved, but before the deep hole drill is processed, the drill bit needs to be fixed on the machine tool, and the drill bit is pushed to a certain position by the feeding mechanism on the machine tool, and then the milling operation is carried out by abutting against the high-speed rotating workpiece, and the current feeding mechanism mostly uses a cylinder as a power source, and the cylinder needs to be continuously stressed during milling, which is easy to cause mechanical fatigue, and also affects the service life of the cylinder. SUMMARY

[0004] The technical scheme of the utility model provides a solution significantly different from the prior art in view of the technical problem that the prior art solution is too single, and specifically, the purpose of the utility model is to solve the above-mentioned shortcomings in the prior art, and a composite multistage step deep hole drill is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A composite multistage step deep hole drill, comprising a tool bar, a deep hole drill bit, a bottom plate, a fixed seat, a butt plate and a feeding unit, the tool bar is coaxially fixed at the bottom of the deep hole drill bit, the bottom plate is fixed at the bottom of the tool bar, and the bottom plate is connected to the butt plate, the butt plate is slidingly connected to the fixed seat;

[0007] The feeding unit comprises a linkage rod, a driven rod and a driving unit, one end of the linkage rod is rotatably connected to the fixed seat, one end of the driven rod is rotatably connected to the butt plate, and the other ends of the linkage rod and the driven rod are rotatably connected to each other.

[0008] As a further scheme of the utility model: the driving unit comprises a connecting seat, a driving rod and a cylinder, the connecting seat is slidingly connected to the fixed seat, one end of the driving rod is rotatably connected to the connecting seat, the other end is rotatably connected to the connection between the linkage rod and the driven rod, the fixed part of the cylinder is fixed to the fixed seat, and the telescopic part of the cylinder is connected to the connecting seat.

[0009] As a further scheme of the utility model: the two ends of the connecting seat are symmetrically fixed with guide rods, and the guide rods are slidingly connected on the fixing seat.

[0010] As a further scheme of the utility model: a sliding groove is arranged on the fixing seat close to one side of the deep hole drill bit, and the two sides of the butt joint plate are slidingly connected in the sliding groove.

[0011] As a further scheme of the utility model: bolts are symmetrically arranged at the four corners of the bottom plate, and the bolts pass through the butt joint plate and are detachably locked through nuts.

[0012] As a further scheme of the utility model: the deep hole drill bit is in a stepped structure as a whole, and a diamond coating is arranged on the surface thereof.

[0013] The utility model has the advantages of:

[0014] In the utility model, the feeding unit is arranged, and the driving unit in the feeding unit drives the linkage rod and the driven rod to link together, and the driving rod is combined to form a lever self-locking structure, so that the feeding unit can form a self-locking structure after pushing the deep hole drill bit to a certain position, and the air cylinder does not need to continuously bear a large reverse thrust, thereby effectively avoiding mechanical fatigue of the air cylinder, and the utility model is simple, efficient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the utility model;

[0016] Fig. 2 It is a feeding unit structure schematic view of the utility model;

[0017] Fig. 3 It is a deep hole drill bit connecting structure schematic view of the utility model;

[0018] Fig. 4 It is a fixing seat structure schematic view of the utility model.

[0019] In the drawing: 1, cutter rod, 2, deep hole drill bit, 3, bottom plate, 4, fixing seat, 5, butt joint plate, 6, feeding unit, 61, connecting seat, 62, linkage rod, 63, driven rod, 64, driving rod, 65, air cylinder, 66, guide rod, 7, sliding groove. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0021] like Figs. 1 to 4 As shown, a composite multi-stage stepped deep hole drill includes a tool holder 1, a deep hole drill bit 2, a base plate 3, a fixed seat 4, a docking plate 5, and a feed unit 6. The tool holder 1 is coaxially fixed to the bottom of the deep hole drill bit 2, the base plate 3 is fixed to the bottom of the tool holder 1, and the base plate 3 is connected to the docking plate 5. The docking plate 5 is slidably connected to the fixed seat 4.

[0022] The feed unit 6 includes a linkage rod 62, a driven rod 63 and an active unit. One end of the linkage rod 62 is rotatably connected to the fixed base 4, and one end of the driven rod 63 is rotatably connected to the docking plate 5. The other ends of the linkage rod 62 and the driven rod 63 are rotatably connected to each other.

[0023] The active unit includes a connecting seat 61, an active rod 64, and a cylinder 65. The connecting seat 61 is slidably connected to the fixed seat 4. One end of the active rod 64 is rotatably connected to the connecting seat 61, and the other end is rotatably connected to the connection between the linkage rod 62 and the driven rod 63. The fixed part of the cylinder 65 is fixed to the fixed seat 4, and the telescopic part of the cylinder 65 is connected to the connecting seat 61.

[0024] In this utility model, by setting up a feed unit 6, the active unit in the feed unit 6 drives the linkage rod 62 and the driven rod 63 to move together, and together with the active rod 64, a lever self-locking structure is formed. After the feed unit 6 pushes the deep hole drill bit 2 to a certain position, it can form a self-locking structure, avoiding the need for the cylinder 65 to continuously bear a large reverse thrust, thereby effectively avoiding mechanical fatigue of the cylinder 65. It is simple, efficient and practical. Example 2

[0025] like Figs. 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0026] Guide rods 66 are symmetrically fixed at both ends of the connecting seat 61, and the guide rods 66 are slidably engaged with the fixed seat 4. The connecting seat 61 is guided by the guide rods 66 to make it slide in a specific direction.

[0027] A groove 7 is provided on the side of the fixed base 4 near the deep hole drill bit 2. The two sides of the docking plate 5 are slidably engaged in the groove 7, and the docking plate 5 can be limited to slide through the groove 7.

[0028] The four corners of the bottom plate 3 are symmetrically provided with bolts, the bolts pass through the butt plate 5 and are detachably locked by nuts, so that the deep hole drill bit 2 can be disassembled and replaced according to actual needs.

[0029] The deep hole drill bit 2 is in a stepped structure as a whole and is provided with a diamond coating on the surface, so that the service life of the deep hole drill bit 2 is increased.

[0030] Working principle: when the deep hole drill is used, the deep hole drill bit 2 of a suitable model is first connected with the fixed seat 4 through the bottom plate 3, then the air cylinder 65 is started, the connecting seat 61 is pushed to slide through the air cylinder 65, the driving rod 64 is driven through the connecting seat 61, the linkage rod 62 and the driven rod 63 are synchronously linked through the driving rod 64, and the self-locking structure is formed.

[0031] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0032] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A composite multi-stage stepped deep hole drill comprising a tool bar (1), a deep hole drill bit (2), a bottom plate (3), a fixing seat (4), a butt plate (5) and a feeding unit (6), characterized in that, The cutter bar (1) is coaxially fixed at the bottom of the deep hole drill bit (2), the bottom plate (3) is fixed at the bottom of the cutter bar (1), and the bottom plate (3) is connected to the butt plate (5), the butt plate (5) is slidingly connected to the fixed seat (4); The feeding unit (6) comprises a linkage rod (62), a driven rod (63) and a driving unit, one end of the linkage rod (62) is rotatably connected to the fixed seat (4), one end of the driven rod (63) is rotatably connected to the butt plate (5), and the other ends of the linkage rod (62) and the driven rod (63) are rotatably connected to each other.

2. The composite multi-step deep hole drill according to claim 1, wherein: The driving unit comprises a connecting seat (61), a driving rod (64) and a cylinder (65), the connecting seat (61) is slidingly connected to the fixed seat (4), one end of the driving rod (64) is rotatably connected to the connecting seat (61), the other end of the driving rod (64) is rotatably connected to the connection between the linkage rod (62) and the driven rod (63), the fixed part of the cylinder (65) is fixed to the fixed seat (4), and the telescopic part of the cylinder (65) is connected to the connecting seat (61).

3. The compound multi-step stepped deep hole drill according to claim 2, characterized in that: The connecting seat (61) is symmetrically provided with guide rods (66) at both ends, and the guide rods (66) are slidingly connected to the fixed seat (4).

4. The compound multi-step stepped deep hole drill according to claim 1, characterized in that: The fixed seat (4) is provided with a sliding groove (7) on the side close to the deep hole drill bit (2), and the butt plate (5) is slidingly connected to the sliding groove (7).

5. The composite multi-step deep hole drill according to claim 1, wherein: The bottom plate (3) is symmetrically provided with bolts at four corners, the bolts pass through the butt plate (5), and are detachably locked by nuts.

6. The composite multi-step deep hole drill according to claim 1, wherein: The deep hole drill bit (2) is in a stepped structure as a whole, and is provided with a diamond coating on the surface.

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