Hard alloy reamer based on stepped hole machining

Abstract

The utility model belongs to the technical field of reamers, particularly relates to a hard alloy reamer based on stepped hole machining, and aims to solve the problem that an existing hard alloy reamer cannot be flexibly assembled, the hard alloy reamer comprises a connecting rod, a fixing rod is fixed to the bottom end of the connecting rod, and a first reamer rod is connected to the lower portion of the fixing rod. A splicing mechanism is arranged at the bottom end of the first reamer rod; the splicing mechanism comprises an inserting rod, the inserting rod penetrates out of the bottom end of the first reamer rod, the bottom end of the inserting rod is connected with a second reamer rod, the inserting rod fixed to the second reamer rod penetrates into the bottom end of the first reamer rod, and limiting rods fixed to the two sides of the penetrating end of the inserting rod enter and slide to the innermost portion along a sliding groove. The second reamer rod is rotated to enable the limiting rod to penetrate into the clamping groove for primary limiting, the different first reamer rods and the second reamer rods are flexibly spliced, adjustment is conducted according to different hole depths, and comprehensiveness and convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a reamer, concretely is a hard alloy reamer based on step hole processing belongs to reamer technical field. BACKGROUND

[0002] The reamer is a rotating tool with one or more cutting teeth to remove a thin layer of metal from the surface of a machined hole. The reamer is a rotating finishing tool with straight or helical blades, used for reaming or repairing holes. The reamer has a higher machining precision requirement than the drill bit due to its small cutting amount, and can be operated manually or installed on a drilling machine.

[0003] In the prior art, as disclosed in the long deep step hole processing reamer with the announcement number CN205888261U, the front end cutting edge of the PCD fine reamer head has a 5° inclination angle, thereby forming a front blade and a rear blade. The spacing between the front blade and the rear blade in the axial direction of the reamer is 0.1mm. During processing, the front blade first contacts the workpiece for cutting, and the rear blade simultaneously performs secondary cutting on the machined surface with the hard alloy head. The small cutting amount plays a polishing role, which is beneficial to improving the surface roughness.

[0004] However, in the implementation of the related technology, it is found that the long deep step hole processing reamer with the above design has the following problems: in the prior art, the cooperation and setting of the front blade and other components can improve the delicacy of the machining surface. However, in the specific use process, since the two parts of the step type reamer are both fixed, when the required hole depth is required, the relatively fixed reamer is not easy to disassemble and flexibly assemble to cope with different hole depth requirements. The applicability is poor. In view of this, a hard alloy reamer based on step hole processing is provided to overcome the above defects. UTILITY MODEL CONTENTS

[0005] The utility model provides a hard alloy reamer based on step hole processing to solve the above relatively fixed reamer which is not easy to disassemble and flexibly assemble to cope with different hole depth requirements and poor applicability.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme: a hard alloy reamer based on step hole processing, including connecting rod, the bottom of connecting rod is fixed with fixed rod, and the bottom of fixed rod is connected with first reamer rod, the bottom of first reamer rod is provided with splicing mechanism;

[0007] The splicing mechanism includes an insertion rod, the insertion rod passes through the bottom end of the first reamer rod, and the bottom end of the insertion rod is connected with the second reamer rod. The insertion rod is fixed with a limiting rod on one end of the first reamer rod. A sliding groove is formed on the inner wall of the first reamer rod corresponding to the position of the limiting rod. One end of the sliding groove is connected with a clamping groove.

[0008] As a further scheme of the utility model: the sliding structure is formed between the insertion rod and the first reamer rod, and the sliding structure is formed between the insertion rod and the clamping groove through the limiting rod.

[0009] As a further scheme of the utility model: the limiting groove is formed on the outer wall of the fixed rod, and the limiting mechanism is arranged inside the limiting groove.

[0010] As a further scheme of the utility model: the limiting mechanism comprises a sliding ring, the sliding ring is slidingly connected to the outer wall of the fixed rod, a receiving rod is fixed to the position of the limiting groove inside the sliding ring, and the bottom end of the receiving rod is fixed with a connecting rod.

[0011] As a further scheme of the utility model: the limiting mechanism further comprises a limiting block, the limiting block is fixed to the bottom end of the connecting rod, and a limiting hole is formed on the position of the limiting block corresponding to the top end of the insertion rod.

[0012] As a further scheme of the utility model: the fixed rod is provided with a resisting mechanism outside, the resisting mechanism comprises a connecting ring, the connecting ring is arranged above the sliding ring outside the fixed rod, a supporting groove is formed on the inner wall of the connecting ring, and a rotating rod is slidingly connected to the inside of the supporting groove.

[0013] As a further scheme of the utility model: the connecting ring is threadedly connected to the fixed rod, and the sliding structure is formed between the connecting ring and the rotating rod through the supporting groove.

[0014] The utility model discloses the beneficial effect is: the insertion rod of the second reamer rod fixed is inserted into the bottom end of the first reamer rod, the limiting rod is fixed on both sides of the insertion rod insertion end, along the slide groove and slides to the most inside, rotates the second reamer rod and lets the limiting rod insert the clamping groove and carry out the preliminary limiting, through the flexible splicing between different first reamer rods and second reamer rods, adjusts for different hole depth, improves the overall and convenience;

[0015] The sliding ring is made to slide along the fixed rod through the receiving rod through the limiting groove, so that the connecting rod slides downward and presses the limiting rod, and at the same time, the limiting block is inserted into the limiting hole, which can drive the second reamer rod to rotate when the first reamer rod rotates, avoiding loosening or shaking.

[0016] The connecting ring is threadedly connected to the fixed rod, so that quick assembly can be carried out, when the connecting ring rotates and slides, the rotating rod is limited by the limiting groove, rotates along the supporting groove in the connecting ring, so that it always abuts on the receiving rod, improving the pressing force to avoid loosening. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The utility model discloses a whole structure schematic diagram;

[0018] Figure 2 The utility model discloses a second reamer bar structure schematic diagram;

[0019] Figure 3 The utility model discloses a chute plane structure schematic diagram;

[0020] Figure 4 The utility model discloses a link rod structure schematic diagram;

[0021] Figure 5 The utility model discloses a connecting ring structure schematic diagram.

[0022] In the drawing: 1, connecting rod;2, fixed rod;3, first reamer bar;4, splicing mechanism;401, second reamer bar;402, insert rod;403, limit rod;404, chute;405, clamping groove;5, limit slot;6, limit mechanism;601, sliding ring;602, bearing rod;603, link rod;604, limit block;605, limit hole;7, abutting mechanism;701, connecting ring;702, rotating rod;703, support slot. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of the utility model. Embodiment one

[0024] As Figures 1 to 5As shown, a kind of hard alloy reamer based on step hole processing, including connecting rod 1, the bottom end of connecting rod 1 is fixed with fixed rod 2, the lower side of fixed rod 2 is connected with first reamer rod 3, and the bottom end of first reamer rod 3 is provided with splicing mechanism 4;Splicing mechanism 4 includes insertion rod 402, insertion rod 402 passes through the bottom end of first reamer rod 3, the bottom end of insertion rod 402 is connected with second reamer rod 401, and the outer wall of one end of first reamer rod 3 is fixed with limit rod 403, the inner wall of first reamer rod 3 is provided with sliding groove 404 at the position corresponding to limit rod 403, one end of sliding groove 404 is connected with clamping groove 405, sliding structure is formed between insertion rod 402 and first reamer rod 3, and sliding structure is formed between insertion rod 402 and clamping groove 405 by limit rod 403;Second reamer rod 401 fixed insertion rod 402 passes through the bottom end of first reamer rod 3, limit rod 403 is fixed on both sides of insertion rod 402 penetration end, after entering and sliding to the innermost part along sliding groove 404, limit rod 403 is inserted into clamping groove 405 by rotating second reamer rod 401 to preliminarily limit, and the flexibility of splicing between different first reamer rod 3 and second reamer rod 401 is adjusted for different hole depths, to improve comprehensiveness and convenience. Example two

[0025] In addition to including all the technical features in example one, the outer wall of fixed rod 2 is provided with limit slot 5 in this embodiment, limit mechanism 6 is arranged in the inside of limit slot 5, limit mechanism 6 includes sliding ring 601, sliding ring 601 is slidably connected to the outer wall of fixed rod 2, abutment rod 602 is fixed in the inside of sliding ring 601 at the position corresponding to limit slot 5, abutment rod 602 is fixed with link rod 603 at the bottom end, limit mechanism 6 further includes limit block 604, limit block 604 is fixed at the bottom end of link rod 603, and limit hole 605 is arranged in the top end of insertion rod 402 at the position corresponding to limit block 604;Limit slot 5 is passed through abutment rod 602 by sliding ring 601, and sliding ring 601 is stably slid along fixed rod 2, so that link rod 603 is slid downward and is pressed to limit rod 403, and limit block 604 is inserted into limit hole 605, so that second reamer rod 401 is rotated when first reamer rod 3 is rotated, to avoid loosening or shaking. Example three

[0026] In addition to comprising all the technical features in embodiment one, the embodiment comprises: the fixed rod 2 is externally provided with a abutting mechanism 7, the abutting mechanism 7 comprises a connecting ring 701, the connecting ring 701 is sleeved above the external sliding ring 601 of the fixed rod 2, the inner wall of the connecting ring 701 is provided with a supporting groove 703, the supporting groove 703 is slidably connected with a rotating rod 702, the connecting ring 701 is threadedly connected with the fixed rod 2, and the connecting ring 701 and the rotating rod 702 form a sliding structure through the supporting groove 703; the connecting ring 701 is twisted to abut and abut against the sliding ring 601 to limit, so that the sliding ring 601 cannot move, the second reamer rod 401 cannot move, the connecting ring 701 is threadedly connected with the fixed rod 2, so that rapid assembly can be realized, when the connecting ring 701 rotates and slides, the rotating rod 702 is limited by the limiting groove 5 and rotates along the supporting groove 703 in the connecting ring 701, so that it always abuts against the receiving rod 602, and the pressing force is improved to prevent loosening.

[0027] Working principle: the connecting rod 1 is used for fixing the reamer and the machine tool or the clamp, the connecting rod 1 fixes the first reamer rod 3 through the fixed rod 2, the second reamer rod 401 fixedly connected with the insertion rod 402 passes through the limiting rod 403, penetrates into the first reamer rod 3, slides along the sliding groove 404, enters the clamping groove 405 to be preliminarily limited, then the sliding ring 601 is moved, slides along the limiting groove 5 through the receiving rod 602, so that the connecting rod 603 can abut against the limiting rod 403 and be pressed tightly, the limiting block 604 is inserted into the limiting hole 605, the second reamer rod 401 can rotate with the first reamer rod 3, the connecting ring 701 is twisted through threaded connection, the rotating rod 702 penetrates through the limiting groove 5 and slides along the supporting groove 703, so that the connecting ring 701 can stably slide along the fixed rod 2, and the rotating rod 702 can abut against the receiving rod 602 to apply pressure to the limiting rod 403 to prevent loosening or disengagement from the clamping groove 405.

[0028] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing 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-limiting, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be regarded as limiting the claims to which they relate.

[0029] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A carbide reamer for machining stepped holes, comprising a connecting rod (1), characterized in that: A fixing rod (2) is fixed to the bottom end of the connecting rod (1), and a first reamer rod (3) is connected below the fixing rod (2), and a splicing mechanism (4) is provided at the bottom end of the first reamer rod (3); The splicing mechanism (4) includes an insertion rod (402), the insertion rod (402) passes through the bottom end of the first reamer rod (3), and the bottom end of the insertion rod (402) is connected to the second reamer rod (401), the insertion rod (402) is located on the outer wall of one end of the first reamer rod (3) and a limiting rod (403) is fixed, and a sliding groove (404) is provided on the inner wall of the first reamer rod (3) at a position corresponding to the limiting rod (403), and one end of the sliding groove (404) is connected to a clamping groove (405).

2. A carbide reamer for step hole machining according to claim 1, characterized in that: A sliding structure is formed between the insertion rod (402) and the first reamer rod (3), and a sliding structure is formed between the insertion rod (402) and the clamping slot (405) via the limiting rod (403).

3. The carbide reamer for step hole machining according to claim 1, characterized in that: A limiting groove (5) is provided on the outer wall of the fixing rod (2), and a limiting mechanism (6) is provided inside the limiting groove (5).

4. The carbide reamer for step hole machining according to claim 3, characterized in that: The limiting mechanism (6) comprises a sliding ring (601) which is slidably connected to the outer wall of the fixed rod (2), and a receiving rod (602) is fixed at a position corresponding to the limiting groove (5) inside the sliding ring (601), and a connecting rod (603) is fixed at the bottom end of the receiving rod (602).

5. The carbide reamer for step hole machining according to claim 4, characterized in that: The limiting mechanism (6) further comprises a limiting block (604), wherein the limiting block (604) is fixed to the bottom end of the connecting rod (603), and a limiting hole (605) is provided at the top end of the insertion rod (402) at a position corresponding to the limiting block (604).

6. The carbide reamer for step hole machining according to claim 1, characterized in that: The fixed rod (2) is provided with a resistance mechanism (7) on the outside. The resistance mechanism (7) comprises a connecting ring (701). The connecting ring (701) is sleeved on the sliding ring (601) on the outside of the fixed rod (2). The inner wall of the connecting ring (701) is provided with a supporting groove (703). The interior of the supporting groove (703) is slidably connected to the rotating rod (702).

7. The carbide reamer for step hole machining according to claim 6, characterized in that: The connecting ring (701) is threadedly connected to the fixed rod (2), and a sliding structure is formed between the connecting ring (701) and the rotating rod (702) through the supporting groove (703).

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