Mechanical automatic opening reverse scraping cutter for machining reverse stepped hole

Abstract

The utility model discloses a mechanical opening and closing reverse scraping cutter, belongs to the technical field of cutters, and particularly relates to a mechanical automatic opening reverse scraping cutter for machining reverse stepped holes, which comprises a cutter handle, a ratchet wheel component and a cutter component. The ratchet wheel assembly is installed on the cutter handle, the cutter assembly is installed in one end of the cutter handle, and the other end of the cutter handle is connected with a machine tool. The ratchet wheel assembly comprises a rotating ratchet wheel, a clamping spring, a spring, a fixed ratchet wheel and a movable ratchet wheel. The cutter assembly comprises a cutter holder, a blade and a torsional spring; by means of the structure of the three ratchet wheels, under the action of spring force, control over opening and closing of the cutter is completed through movement of the machine tool, the cutter abuts against a machined part of the machine tool after passing through a hole, a cutter bit pops up, the workpiece of the machine tool is ejected again after machining is completed, the cutter bit retreats, and the cutter is safely withdrawn.

Description

TECHNICAL FIELD

[0001] The utility model discloses a mechanical type opens and closes counter scraping tool belongs to tool technical field, specifically relates to a kind of for processing counter surface step hole mechanical type automatic opening counter scraping tool. BACKGROUND

[0002] The main role of step hole machining tool is to machine holes with different diameters, which is usually used in the manufacturing of parts in the fields of automobiles, machinery, aviation, etc. When machining irregular step holes with traditional step hole machining tools, the tool is prone to interfere with the hole wall, resulting in tool damage or tool breaking. When machining deep step holes on complex castings, the position and size of the empty hole may deviate, which can cause the cutting edge of the boring tool to be damaged, and in severe cases, the tool may break due to unilateral cutting. Moreover, the traditional step hole machining tool cannot continuously cut and retract during machining, resulting in low work efficiency. SUMMARY

[0003] The utility model aims to provide a kind of for processing counter surface step hole mechanical type automatic opening counter scraping tool, solve the problem mentioned above.

[0004] Technical scheme: a kind of for processing counter surface step hole mechanical type automatic opening counter scraping tool, the counter scraping tool includes: handle, ratchet assembly and tool assembly;

[0005] In further embodiments, the ratchet assembly is installed on the handle, and the tool assembly is installed in one end of the handle, and the other end of the handle is connected to a machine tool;

[0006] The ratchet assembly includes a rotating ratchet, a snap spring, a spring, a fixed ratchet, and a movable ratchet;

[0007] The tool assembly includes a tool holder, a blade, and a torsion spring.

[0008] In further embodiments, the fixed ratchet is screwed to one end of the handle, the movable ratchet is sleeved on the handle and cooperates with the fixed ratchet, the rotating ratchet is sleeved on the movable ratchet and cooperates with the movable ratchet, the snap spring is sleeved on the end of the movable ratchet to limit the movement distance of the rotating ratchet, and the spring is installed between the handle and the rotating ratchet.

[0009] In further embodiments, one end of the movable ratchet is provided with a steel pipe, and the steel pipe is sleeved on the outside of the handle.

[0010] In further embodiments, the tool holder is installed on one end of the handle by the torsion spring, and the blade is installed on the tool holder.

[0011] Beneficial effects: the utility model discloses three ratchet wheel's structure under the action of spring force, through the movement of machine tool to complete the control of the opening and closing of the tool, and the tool is pushed to the workpiece of machine tool after passing through the hole, and the tool bit is popped out, and the workpiece of machine tool is pushed once again after finishing processing, and the tool bit is withdrawn, and the tool is safely withdrawn, the utility model ensures the size accuracy and shape accuracy of the step hole, meets the design requirement, and can greatly improve work efficiency and ensure stable mechanical connection. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the isometric view of the utility model.

[0013] Figure 2 is the schematic view of the utility model.

[0014] Figure 3 is the partial schematic view of the utility model.

[0015] Figure 4 is the schematic view of the ratchet wheel assembly of the utility model.

[0016] Figure 5 is the schematic view of the open state of the utility model.

[0017] Figure 6 is the schematic view of the closed state of the utility model.

[0018] Reference signs: handle 1, ratchet wheel assembly 2, tool assembly 3, rotating ratchet wheel 21, clamping spring 22, spring 23, fixed ratchet wheel 24, movable ratchet wheel 25, steel pipe 26, tool holder 31, blade 32, torsion spring 33. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be described below in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0020] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it is to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication. For ordinary skilled person in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] A mechanical automatic opening reverse scraping tool for machining reverse step hole, comprising: a handle 1, a ratchet assembly 2, a tool assembly 3.

[0023] In one embodiment, as shown in Figures 1 to 6 The ratchet assembly 2 is installed on the handle 1, the tool assembly 3 is installed in one end of the handle 1, and the other end of the handle 1 is connected to the machine tool.

[0024] The ratchet assembly 2 comprises a rotating ratchet 21, a circlip 22, a spring 23, a fixed ratchet 24 and a movable ratchet 25.

[0025] The tool assembly 3 comprises a tool holder 31, a blade 32 and a torsion spring 33.

[0026] In one embodiment, as shown in Figures 1 to 6 One end of the fixed ratchet 24 is screwed with one end of the handle 1, the movable ratchet 25 is sleeved on the handle 1 and matched with the fixed ratchet 24, the rotating ratchet 21 is sleeved on the movable ratchet 25 and matched with the movable ratchet 25, the circlip 22 is sleeved on the end of the movable ratchet 25 to limit the movement distance of the rotating ratchet 21, and the spring 23 is installed between the handle 1 and the rotating ratchet 21.

[0027] In one embodiment, as shown in Figures 1 to 6 One end of the movable ratchet 25 is provided with a steel pipe 26, and the steel pipe 26 is sleeved on the outer side of the handle 1.

[0028] In one embodiment, as shown in Figures 1 to 6 The tool holder 31 is rotatably installed on one end of the handle 1 by the torsion spring 33, and the blade 32 is installed on the tool holder 31.

[0029] Working principle: with the movement of the machine tool, the movement of the handle 1 is driven, so that the rotating ratchet 21 is matched with the movable ratchet 25 and the fixed ratchet 24, and under the action of the spring 23, the opening and closing control of the tool assembly 3 is completed through the movement of the machine tool, the tool assembly 3 is pushed to the workpiece of the machine tool through the hole, the blade 32 is popped out, and the workpiece of the machine tool is pushed again after the machining is completed, the blade 32 is retracted, and the tool assembly 3 is safely withdrawn.

[0030] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A mechanically automatically opening counter-scrapping tool for machining counter-bored holes, characterized in that, The reverse scraper tool comprises a tool handle, a ratchet assembly and a tool assembly; The ratchet assembly is installed on the tool handle, the tool assembly is installed in one end of the tool handle, and the other end of the tool handle is connected to a machine tool; The ratchet assembly comprises a rotating ratchet, a snap spring, a spring, a fixed ratchet and a movable ratchet; The tool assembly comprises a tool holder, a tool blade and a torsion spring.

2. The mechanical automatic opening counter-scraper tool for machining counter-bored holes according to claim 1, characterized in that, One end of the fixed ratchet is screwed with one end of the tool handle, the movable ratchet is sleeved on the tool handle and cooperates with the fixed ratchet, the rotating ratchet is sleeved on the movable ratchet and cooperates with the movable ratchet, the snap spring is sleeved on the end of the movable ratchet to limit the moving distance of the rotating ratchet, and the spring is installed between the tool handle and the rotating ratchet.

3. The mechanical automatic opening counter-scrapping tool for machining counter-bore with a step according to claim 2, characterized in that, One end of the movable ratchet is provided with a steel pipe, and the steel pipe is sleeved outside the tool handle.

4. The mechanical automatic opening counter-scrapping tool for machining counter-bore with a step according to claim 1, characterized in that, The tool holder is rotatably installed in one end of the tool handle through the torsion spring, and the tool blade is installed on the tool holder.

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