Inner-opening bidirectional machining tool

Abstract

The utility model relates to the technical field of machining, in particular to an inward-opening bidirectional machining cutter which is characterized in that an L-shaped through groove is formed in the front end of a cutter body, and two positioning keys are arranged in the direction of the L-shaped through groove; the two tool bits are symmetrically placed in the L-shaped through groove, make contact with the side wall of the L-shaped through groove and are matched with the positioning keys through key grooves, the tool bits penetrate through the positioning keys through fastening screws to be connected with the tool body, and the tool bits are provided with blades; the left-right displacement between the tool bit and the tool body can be limited through the matching of the positioning key and the key groove, the fastening screw is used for fixing, the side wall of the L-shaped through groove is used for positioning, and compared with the positioning mode in the prior art, the tool bit positioning mode of the embodiment is firmer, and the impact load resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an inner-opening bidirectional processing tool. Background Art

[0002] The crank is an important component of the crankshaft of a large marine diesel engine, and its processing efficiency is directly related to the production capacity of the crankshaft of a large marine diesel engine. During processing, the tool needs to penetrate into the narrow space between the two crank arms of the crank to perform surface turning.

[0003] The Chinese utility model patent with announcement number 205057085U discloses a double-headed adjustable width turning tool, whose main body is an upper and lower cutter head and a tool holder. The upper and lower cutter heads are installed in two mounting grooves of the tool holder. The distance between the tool tips of the upper and lower cutter heads is adjusted by adjusting the screws to achieve simultaneous turning of the upper and lower planes of the deep groove, thereby improving the processing efficiency. During the processing, since the processing is only carried out when the crank contacts the tool during one rotation of the crank (the crank rotates for processing, and the crank is idle except when it contacts the tool until the next time it contacts the tool), an impact load is generated each time the crank processing surface contacts the tool. In the above patent, it only relies on fastening screws for fixing and groove contact surface positioning, and the impact load resistance is weak. Utility Model Content

[0004] The purpose of the utility model is to provide a bidirectional machining tool for inner opening to solve the problems existing in the prior art. In order to achieve the above purpose, the utility model solves the problem through the following technical solutions:

[0005] The utility model provides an inner opening bidirectional machining tool, comprising:

[0006] The blade body has an L-shaped through slot at the front end and two positioning keys along the direction of the L-shaped through slot;

[0007] Two cutter heads are symmetrically placed in the L-shaped through groove and contact its side wall, and are respectively matched with one of the positioning keys by setting a keyway. The cutter head is connected to the cutter body by a fastening screw passing through the positioning key, and the cutter head is equipped with a blade.

[0008] As a further technical solution, a wedge-shaped groove is formed between the two cutter heads, a wedge-shaped block matching with the wedge-shaped groove is provided in the wedge-shaped groove, and the wedge-shaped block is connected to the cutter body by a fastening screw.

[0009] As a further technical solution, the knife body includes a universal knife seat and a knife seat, and the knife head is arranged on the knife seat.

[0010] As a further technical solution, the universal knife holder and the knife holder are an integrated structure.

[0011] As a further technical solution, the positioning key and the knife body are an integral structure.

[0012] As a further technical solution, the knife body is provided with a groove to cooperate with the positioning key.

[0013] As a further technical solution, the blade is a rectangular blade.

[0014] As a further technical solution, the blade is installed by lever-type clamping method.

[0015] The beneficial effects of the above utility model are as follows:

[0016] (1) The present invention can limit the left-right displacement between the cutter head and the cutter body by the cooperation of the positioning key and the keyway. In addition, the fixing of the fastening screw and the positioning of the side wall of the L-shaped through groove make the cutter head positioning method of this embodiment more secure and improve the impact load resistance compared with the positioning method in the prior art.

[0017] (2) A wedge-shaped groove is formed between the two cutter heads of the utility model, and a wedge-shaped block is provided in the wedge-shaped groove to match the two cutter heads. The wedge-shaped block is connected to the cutter body by a fastening screw. The wedge-shaped block can support the two cutter heads, further position the cutter heads, and enhance the stability of the cutter heads. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute a limitation of the present invention. It should also be understood that these drawings are shown for simplicity and clarity and are not necessarily drawn to scale. The present invention will now be described and explained with additional features and details through the use of the accompanying drawings.

[0019] in:

[0020] Figure 1 It shows the front view of the inner opening bidirectional machining tool in the embodiment of the utility model;

[0021] Figure 2 A side view of an inner opening bidirectional machining tool in an embodiment of the utility model is shown;

[0022] Figure 3 An exploded view of an inner opening bidirectional machining tool in an embodiment of the utility model is shown;

[0023] Figure 4 It shows the front view of the blade structure in the embodiment of the utility model;

[0024] Figure 5 The front view of the cutter head and blade structure in the embodiment of the utility model is shown.

[0025] In the figure: 100, knife body; 110, universal knife holder; 120, knife holder; 130, positioning key; 200, wedge block; 300, knife head; 310, mounting hole; 400, blade; 500, knife pad. DETAILED DESCRIPTION

[0026] The technical solutions in typical embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1 and Figure 3 As shown, this embodiment provides an inner-opening bidirectional machining tool, including a tool body 100 , a wedge block 200 , a tool head 300 and a blade 400 .

[0028] like Figure 4 As shown, the blade body 100 includes a universal blade seat 110 and a blade seat 120. In this embodiment, the universal blade seat 110 and the blade seat 120 are an integrated structure. The front end of the blade body 100 refers to the blade seat 120, and a blade head 300 is arranged on the blade seat 120. The blade seat 120 is provided with an L-shaped through groove, and the function of the L-shaped through groove is to place two blade heads 300.

[0029] The two cutter heads 300 are placed symmetrically, and one side surface of the cutter head 300 contacts the side wall of the L-shaped through groove, so that the side surface of the cutter head 300 is positioned.

[0030] The present embodiment is different from the prior art in that two positioning keys 130 are provided along the L-shaped through groove, and one cutter head 300 cooperates with one positioning key 130. It is understandable that the two positioning keys 130 should also be arranged symmetrically. In order to cooperate with the positioning key 130, the cutter head 300 is provided with a keyway that cooperates with the positioning key 130.

[0031] The cutter head 300 is connected to the cutter body 100 by means of a fastening screw passing through the positioning key 130. Figure 5 As shown, the cutter head 300 is provided with a mounting hole 310. When the cutter head 300 is connected to the cutter body 100, the fastening screw passes through the mounting hole 310. In this embodiment, the positioning key 130 and the cutter body 100 are an integral structure. In some other embodiments, the cutter body 100 is provided with a groove to cooperate with the positioning key 130. In this case, the positioning key 130 is replaceable.

[0032] In this embodiment, the left and right displacement between the cutter head 300 and the cutter body 100 can be limited by the cooperation of the positioning key 130 and the key slot. In addition, the fixation of the fastening screws and the positioning of the side walls of the L-shaped through slot make the cutter head positioning method of this embodiment more secure and improve the impact load resistance compared to the positioning method in the prior art.

[0033] like Figure 2As shown, a wedge-shaped groove is formed between the two cutter heads 300, and a wedge block 200 is provided in the wedge-shaped groove to match the wedge block, which is connected to the cutter body 100 by a fastening screw. The wedge block 200 can support the two cutter heads 300, further position the cutter heads 300, and enhance the stability of the cutter heads 300.

[0034] Each of the two cutter heads 300 is provided with a blade 400. In this embodiment, the blade 400 is a rectangular blade, which can increase the cutting capacity. Since the positioning structure adopted is more stable, a blade structure with a larger cutting capacity can be adopted.

[0035] In this embodiment, the blade 400 is installed by a lever-type clamping method, which includes a blade pad 500, a lever and other structures. The specific structure and installation method belong to the prior art and will not be described in detail here.

[0036] Although the utility model has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field can make possible changes and modifications to the technical solution of the utility model by using the methods and technical contents disclosed above without departing from the spirit and scope of the utility model. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. An inner opening bidirectional machining tool, characterized in that: include: The blade body has an L-shaped through slot at the front end and two positioning keys along the direction of the L-shaped through slot; Two cutter heads are symmetrically placed in the L-shaped through groove and contact its side wall, and are respectively matched with one of the positioning keys by setting a keyway. The cutter head is connected to the cutter body by a fastening screw passing through the positioning key, and the cutter head is equipped with a blade.

2. The inner opening bidirectional machining tool according to claim 1, characterized in that: A wedge-shaped groove is formed between the two cutter heads, and a wedge-shaped block matching with the wedge-shaped groove is arranged in the wedge-shaped groove. The wedge-shaped block is connected to the cutter body through a fastening screw.

3. The inner opening bidirectional machining tool as claimed in claim 2, characterized in that: The knife body comprises a universal knife seat and a knife seat, and the knife head is arranged on the knife seat.

4. The inner opening bidirectional machining tool as claimed in claim 3, characterized in that: The universal knife holder and the knife holder are an integrated structure.

5. The inner opening bidirectional machining tool according to claim 1, characterized in that: The positioning key and the knife body are an integrated structure.

6. The inner opening bidirectional machining tool according to claim 1, characterized in that: The knife body is provided with a groove which cooperates with the positioning key.

7. The inner opening bidirectional machining tool according to claim 1, characterized in that: The blade is a rectangular blade.

8. The inner opening bidirectional machining tool according to claim 1, characterized in that: The blade is installed by lever-type clamping method.

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