Manual material removal device

Abstract

Device for removing material, characterized in that it consists of a shaft (1) which is provided in the middle part with at least one tool (4), at one end with a torque source (Z) and at the opposite end of the shaft (1) with a rotating sleeve (P).

Description

Technical area

[0001] The technical solution is a manual material removal device. State of the art

[0002] Hand tools are tools that can be used for a variety of machining operations, not only for cutting but also for material removal. These tools are particularly advantageous when high precision in material removal is not required. Tools are available on the market in the form of hand-held milling or grinding machines, designed to be held by the operator.

[0003] A handheld device is known from the prior art, consisting of a shaft that can be connected to a torque source at one end. Two discs are screwed onto the shaft, between which abrasive paper is inserted from the outside. The discs have a groove into which the abrasive paper is inserted. This assembly is hermetically sealed and designed for gas supply, which inflates a chamber whose space is defined by the abrasive paper and discs. The gas supply to the resulting enclosed space pressurizes the chamber, expands the abrasive paper, and forms a tool that enables material removal by creating a convex surface with a defined roughness. One end of the tool is equipped with a handle.

[0004] Devices suitable for gripping by an operator are known from the prior art, for example from WO2008006149A1, which describes a farrier's tool with a rasp and a handle. The handle has two opposing points extending from one end. EP1149562A3 and EP1459686A3 disclose a solution for a device for holding a stick rasp suitable for medical purposes. US4941246A describes a multifunctional holder for holding a stick rasp. The essence of the technical solution

[0005] The core of the technical solution consists of a shaft equipped with at least one cylindrical tool in its central section. A torque source is located at one end of the shaft, and a rotating sleeve at the opposite end. The tools are cylindrical rasps, milling cutters, or grinding wheels. It is advantageous if the torque source and the rotating sleeve are designed for gripping. This facilitates handling in hard-to-reach places or when the workpiece is moving or not in a stable, stationary position.

[0006] Furthermore, it is advantageous if the torque source is a hand drill. Such a design facilitates the handling of the tool and the generation of a constant torque, as the device can be gripped manually by the operator using the two handle surfaces.

[0007] It is also advantageous if bearings are provided between the rotating sleeve and the shaft. Furthermore, it is advantageous if the shaft is suitable at one end for connecting a torque source, for example with an external thread onto which a nut is screwed to secure the tool.

[0008] The quality of the tool clamping is improved by inserting a washer between the tool and the shaft through which the shaft passes. This results in a more reliable connection by eliminating irregularities and preventing loss of grip during the overrun process of this connection. Clarification of images in drawings Fig. Figure 1a shows a view of a hand-held material removal device. Fig. Figure 1b shows a cross-sectional view of a hand-held material removal device. Exemplary implementation of a technical solution

[0009] The hand-held material removal device according to the exemplary embodiment consists of a shaft 1 with several rasp-shaped tools 4 in its central section, a torque source Z at one end, and a rotary sleeve P at the opposite end. In this particular embodiment, these are cylindrical rasps for material removal, for example, for scraping, and are provided with tips approximately 0.5 mm high. The maximum height of the tips is 1 mm. The torque source Z and, in this case, the rotary sleeve P are designed for gripping. Rolling bearings 3 are mounted on the shaft 1 between the rotary sleeve P and the shaft 1. The shaft 1 is reinforced between the cylindrical rasp tools 4 and the rotary sleeve P to precisely define their relative positions.The shaft 1 is weakened at one end at the connection point to the torque source Z and is provided with an external thread on which a nut 6 is mounted. A washer 5 is inserted between the nut 6 and the tool 4, which is in the form of a rasp. In this embodiment, the torque source Z is a hand drill. The shaft 1 is made of material S355MC. The tools 4, which consist of identical segments, are made of material 19312 in this embodiment. The material to be removed is, for example, wood-based, but can also be a biological material, such as leather or horn. Exemplary implementation of the technical solution II

[0010] The manual rotary tool for material removal, according to the exemplary embodiment, consists of a shaft 1 equipped with three blades 4 in its central section, a torque source Z at one end, and a rotary sleeve P at the opposite end. In this particular embodiment, these are disc blades configured for material removal. The torque source Z and, in this case, the rotary sleeve P are configured for gripping. Rolling bearings 3 are mounted on the shaft 1 between the rotary sleeve P and the shaft 1. The shaft 1 is reinforced between the disc blades 4 and the rotary sleeve P to precisely define their relative positions. The shaft 1 is weakened at one end at the connection point of the torque source Z and is provided with an external thread in a section, onto which a nut 6 is screwed.A washer 5 is inserted between the nut 6 and the tools 4, which are in the form of milling cutters. In this particular embodiment, the torque source Z is a hand drill. The shaft 1 is made of the material S355MC. Exemplary implementation of technical solution III

[0011] The manual material removal device according to the exemplary embodiment consists of a shaft 1, which is provided in its central section with four grinding wheels 4, a torque source Z at one end, and a rotary sleeve P at the opposite end of the shaft. In this particular embodiment, these are grinding wheels for material removal. The torque source Z and, in this case, the rotary sleeve P are suitable for gripping. Rolling bearings 3 are mounted on the shaft 1 between the rotary sleeve P and the shaft 1. The shaft 1 is reinforced between the grinding wheels 4 and the rotary sleeve P to define the relative position between the tools 4 and the rotary sleeve P. The shaft 1 is weakened at one end at the connection point of the torque source Z and is provided with an external thread in a section, onto which a nut 6 is screwed. A washer 5 is inserted between the nut 6 and the tools 4.In this particular embodiment, the torque source Z is a hand drill. The shaft 1 is made of the material S355MC. Exemplary implementation of technical solution IV

[0012] The hand-held rotary tool for material removal according to the exemplary embodiment consists of a shaft 1 with a section in its middle featuring arranged points of no more than 1 mm height, a torque source Z at one end, and a rotary sleeve P at the opposite end. The torque source Z and, in this case, the rotary sleeve P are suitable for gripping. Rolling bearings 3 are mounted on the shaft 1 between the rotary sleeve P and the shaft 1. The shaft 1 is reinforced between the section with the arranged points and the rotary sleeve P to precisely define the relative position between these sections. In this particular embodiment, the torque source Z is a hand drill. The shaft 1 is made of material S355MC. Industrial applicability

[0013] The technical solution is used in material removal processes, especially in finishing, or wherever material removal is required, particularly of a non-metallic nature, in hard-to-reach places without high accuracy requirements or with dynamically moving workpieces. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] WO 2008006149A1

[0004] EP 1149562A3

[0004] EP 1459686A3

[0004] US 4941246A

[0004]

Claims

[1] Device for removing material, characterized by , that it consists of a shaft (1) which is provided in the middle part with at least one tool (4), at one end with a torque source (Z) and at the opposite end of the shaft (1) with a rotating sleeve (P). [2] Device according to claim 1, characterized by , that the torque source (Z) and / or the rotary sleeve (P) is designed for gripping. [3] Device according to claim 1 or 2, characterized by , that the torque source (Z) is formed by a hand drill. [4] Device according to claim 1, 2 or 3, characterized by , that bearings (3) are installed between the rotating sleeve (P) and the shaft (1). [5] Device according to any of the preceding claims, characterized by , that the shaft (1) is provided at one end with an external thread for the connection (Z) of the torque source, onto which a nut (6) is screwed. [6] Device according to claim 5, characterized by , that a washer (5) is inserted between the tool (4) and the nut (6), through which the shaft (1) passes.

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