Automatic core material tapper for large workpiece machining

Abstract

The utility model discloses an automatic core material tapper for large workpiece machining, which belongs to the technical field of tapping equipment and comprises a cutting portion, a tensioning portion and a driving portion. The cutting part comprises a disc-shaped cutting tool body, and a tool holder is arranged on one axial side of the cutting tool body; the tensioning part comprises a tensioning sleeve and a conical shaft, and a plurality of tensioning claws are arranged at one axial end of the tensioning sleeve; the driving part comprises a cylinder body, the end, away from the cutting tool body, of the cylinder body is fixedly connected with the axial end of the expansion sleeve, an executing mechanism is arranged in the cylinder body, and one end of the executing mechanism is fixedly connected with the conical shaft; the executing mechanism drives the conical shaft to move in the direction away from the cutting tool body so that the tensioning claw can expand outwards in the radial direction or move in the direction close to the cutting tool body so that the tensioning claw can reset inwards in the radial direction. By using the tapper, residual core materials can be generated, the processing efficiency is high, and material consumption and energy are saved; and meanwhile, through the arrangement of the tensioning part and the driving part, the large residual core material can be effectively prevented from falling off in the tapping process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the hole equipment technical field, concretely relates to a large -scale work piece processing automatic coring material hole opener. BACKGROUND

[0002] Large hole machining exists universally in the large work piece processing, in traditional processing has two ways, the first is the drill -boring or drill -milling processing mode, this mode will be all the materials of the hole position into iron filings, will not produce residual core material, high safety factor, but the processing efficiency is low, and the tool consumption and machine tool energy consumption are big. The second is to use the traditional hole opener to process, and the processing efficiency is high, and the residual core material can be used twice, and the tool consumption and machine tool energy consumption are low, but the hole is bored by the hole opener, and the residual core material is separated from the workpiece and falls under the pushing of the tool, and the workpiece or machine tool is hit, and there is a safety hazard, and additional protection measures are needed.

[0003] In order to improve the processing efficiency of the large hole, save material consumption and energy, and ensure the safety of personnel, equipment and workpiece, the application provides a large workpiece processing automatic core material taking hole opener, the hole opener blocks the residual core material from falling when drilling through by the outward expansion of the expansion sleeve, and the blocking effect of the residual core material is removed when the machine tool moves to the specified position, so that the residual core material is dropped. UTILITY MODEL CONTENTS

[0004] The utility model discloses a large workpiece processing automatic core material taking hole opener, which can overcome the defects of the prior art and improve the processing efficiency of the large hole, save material consumption and energy, and ensure the safety of personnel, equipment and workpiece.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A large workpiece processing automatic core material taking hole opener, comprising a cutting part, a tensioning part and a driving part.

[0007] The cutting part comprises a disc-shaped cutting tool body, and a plurality of cutter holders with cutting tools are arranged on the circumferential direction of the axial side of the cutting tool body.

[0008] The tensioning part comprises an expansion sleeve and a tapered shaft inside the expansion sleeve, and the axial end of the expansion sleeve is provided with a plurality of tensioning claws arranged uniformly in the circumferential direction.

[0009] The driving part comprises a cylinder body coaxially fixed on the cutting tool body, the end of the cylinder body away from the cutting tool body is fixedly connected with the axial end of the expansion sleeve, the inside of the cylinder body is provided with an execution mechanism movable in the axial direction of the expansion sleeve, and one end of the execution mechanism is fixedly connected with the tapered shaft.

[0010] The actuating mechanism drives the conical shaft to move away from the cutting tool body to make the expansion claws expand radially outward or to move towards the cutting tool body to make the expansion claws reset radially inward.

[0011] Preferably, a circular support body is coaxially arranged on one axial side of the cutting tool body, and tool seats for mounting the tool holders are arranged on the axial end of the support body in the circumferential direction, and positioning grooves for mounting the tool holders are arranged on the same side of all the tool seats in the circumferential direction.

[0012] Preferably, the tool holder and the tool seat are connected through bolts.

[0013] Preferably, a plurality of tool holders with cutting tools are unevenly arranged on one axial side of the cutting tool body in the circumferential direction.

[0014] Preferably, 4-8 tool holders with cutting tools are arranged on one axial side of the cutting tool body in the circumferential direction.

[0015] Preferably, the inner side wall of the end of the expansion claw away from the cylinder body is in a conical surface structure, and the large end face of the inner conical surface structure of the expansion claw faces the cylinder body.

[0016] The expansion sleeve is in a natural state, and the conical surfaces of the inner side walls of all the expansion claws are located on the same circular table face.

[0017] The outer side wall of the end of the conical shaft away from the cutting tool body is in a conical surface structure matched with the inner conical surface of the expansion claw.

[0018] Preferably, the outer side wall of the cylinder body and the inner side wall of the expansion sleeve are threadedly connected.

[0019] Preferably, a connecting plate is fixedly arranged on the side of the cylinder body close to the cutting tool body, and the connecting plate and the cutting tool body are connected through bolts.

[0020] Preferably, the inner side wall of the cylinder body comprises a first circular cylindrical surface and a second circular cylindrical surface.

[0021] The actuating mechanism comprises a coaxially fixed piston and a piston shaft, the piston is in sealing sliding fit with the first circular cylindrical surface, and the piston shaft is coaxially fixedly connected with the conical shaft after penetrating through the second circular cylindrical surface.

[0022] A sealing driving cavity is formed among the piston, the first circular cylindrical surface and the end face of the cutting tool body, and the sealing driving cavity is connected with a driving liquid supply system.

[0023] Preferably, a limiting piece is arranged at the step where the first circular cylindrical surface and the second circular cylindrical surface meet.

[0024] The utility model discloses the beneficial effect is:

[0025] (1) the core machine of the utility model can produce residual core material, therefore, the processing efficiency is high, material consumption and energy are saved, and meanwhile, through the setting of the tensioning part and the driving part, the machine tool and the workpiece can be effectively prevented from being damaged by the falling of large residual core material during the hole forming process, the safety hidden danger and economic loss caused by this can be avoided, and the operation safety factor is improved.

[0026] (2) during the hole forming process of the core machine, manual residual material anti-falling protection and large residual core material cleaning are not needed, the labor intensity of personnel is greatly reduced, and the processing efficiency is improved.

[0027] (3) the core machine consumes low during hole forming, and the power consumption of the machine tool is small, which is beneficial to energy saving and emission reduction.

[0028] (4) the core machine can produce residual core material, the recycled residual core material can be used again as the blank of some small workpieces or tooling, and the material utilization rate is improved.

[0029] (5) the core machine can be linked with the numerical control machine tool, and the automation degree of operation is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] The drawings accompanying the specification provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application.

[0031] Figure 1 is a structural schematic perspective view of the automatic residual core material taking hole forming machine for large workpiece machining of the utility model;

[0032] Figure 2 is a cooperation schematic view of the tensioning part and the driving part in the utility model;

[0033] Figure 3 is a structural schematic view of the tensioning part in the utility model;

[0034] Figure 4 is a structural schematic view of the driving part in the utility model;

[0035] Figure 5 is a schematic view of the expansion sleeve from the natural state to the expanded state during the hole forming operation process of the automatic residual core material taking hole forming machine for large workpiece machining of the utility model;

[0036] Figure 6 is a schematic view when the hole is completely penetrated during the hole forming operation process of the automatic residual core material taking hole forming machine for large workpiece machining of the utility model;

[0037] Figure 7 is a schematic view when the automatic residual core material taking hole forming machine for large workpiece machining of the utility model suspends the residual core material;

[0038] Wherein:

[0039] 1-cutting tool body, 11-support body, 12-tool holder, 13-side, 14-bottom, 2-tool holder, 3-tight sleeve, 31-tight claw, 4-cone shaft, 5-cylinder, 51-first cylindrical surface, 52-second cylindrical surface, 53-driving cavity, 54-connection plate, 6-piston, 7-piston shaft, 8-limiting part. DETAILED DESCRIPTION

[0040] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0041] As Figures 1-4 shown, a large workpiece machining automatic core material tapping device, including cutting part, tight part, driving part;

[0042] The cutting part includes disc-shaped cutting tool body 1, the axial side of the cutting tool body 1 is provided with a plurality of tool holders 2 with cutting knives along the circumferential direction;Wherein the side of the cutting tool body 1 away from the tool holder 2 is designed with a standard surface milling interface, and a standard surface milling tool handle is used to connect with the machine tool, if the machine tool is used for internal cooling driving, the tool handle needs to have a central water outlet hole;

[0043] The tight part includes a tight sleeve 3 and a cone shaft 4 inside the tight sleeve 3, and the axial end of the tight sleeve 3 is a plurality of tight claws 31 arranged uniformly along the circumferential direction;

[0044] The driving part includes a cylinder 5 coaxially fixed on the cutting tool body 1, the end of the cylinder 5 away from the cutting tool body 1 is fixedly connected with the axial end of the tight sleeve 3, wherein the tight claw 31 is away from the cylinder 5, the inside of the cylinder 5 is provided with an actuator movable along the axial direction of the tight sleeve 3, and one end of the actuator is fixedly connected with the cone shaft 4;Wherein the outer diameter of the tight sleeve 3 in natural state is not less than the outer diameter of the cylinder 5;

[0045] The actuator drives the cone shaft 4 to move away from the cutting tool body 1 to make the tight claw 31 outwardly expand along the radial direction or move close to the cutting tool body 1 to make the tight claw 31 reset along the radial direction.

[0046] Preferably, the axial side of the cutting tool body 1 is coaxially fixed with a circular ring-shaped support body 11, the axial end of the support body 11 is provided with a tool holder 12 for installing the tool holder 2 along the circumferential direction, and all the tool holders 12 are provided with positioning grooves for installing the tool holder 2 on the same side along the circumferential direction. Wherein the positioning groove includes side 13 and bottom 14 connected and at a certain angle, the tool holder 2 is positioned by the side 13 and the bottom 14, and the positioning accuracy is improved.

[0047] Preferably, the tool holder 2 is connected to the tool seat 12 by bolts.

[0048] Preferably, the axial side of the cutting tool body 1 is non-uniformly provided with a plurality of tool holders 2 with cutting tools in the circumferential direction, and the tool holders 2 are designed with unequal distances in the circumferential direction to prevent resonance during machining.

[0049] Preferably, the axial side of the cutting tool body 1 is provided with 4-8 tool holders 2 with cutting tools in the circumferential direction.

[0050] Preferably, the end inner wall of the tensioning claw 31 away from the cylinder body 5 is a conical surface structure, and the large end face of the inner conical surface structure of the tensioning claw 31 faces the cylinder body 5.

[0051] The inner wall of the tensioning claw 31 is located on the same circular platform in the natural state of the tensioning sleeve 3.

[0052] The outer wall of the conical shaft 4 away from the cutting tool body 1 is a conical surface structure matched with the inner conical surface of the tensioning claw 31.

[0053] Preferably, the outer wall of the cylinder body 5 is threadedly connected to the inner wall of the tensioning sleeve 3.

[0054] Preferably, the side of the cylinder body 5 close to the cutting tool body 1 is fixedly provided with a connecting plate 54, and the connecting plate 54 is connected to the cutting tool body 1 by bolts.

[0055] Preferably, the inner wall of the cylinder body 5 includes a first cylindrical surface 51 and a second cylindrical surface 52.

[0056] The actuator includes a coaxially fixed piston 6 and a piston shaft 7, the piston 6 is in sealing sliding fit with the first cylindrical surface 51, and the piston shaft 7 is coaxially fixedly connected to the conical shaft 4 after passing through the second cylindrical surface 52. Specifically, the end of the conical shaft 4 facing the piston shaft 7 is provided with a connecting hole, and the piston shaft 7 is threadedly connected to the connecting hole.

[0057] The piston 6, the first cylindrical surface 51, and the end face of the cutting tool body 1 form a sealed driving cavity 53, and the sealed driving cavity 53 is connected to a driving liquid supply system. The driving liquid can be machine internal cooling water, which reaches the sealed driving cavity 53 through a tool shank.

[0058] Preferably, a limiting piece is arranged at the step where the first cylindrical surface 51 and the second cylindrical surface 52 meet, to prevent the tensioning sleeve 3 from over-expanding. The diameter of the first cylindrical surface 51 is larger than that of the second cylindrical surface 52.

[0059] A large workpiece machining automatic coring and hole opening device has the following specific implementation:

[0060] First step: in the center of the opening position of the workpiece, according to the diameter of the expanding sleeve 3, the bottom hole is pre-processed, the bottom hole needs to be completely penetrated, and the diameter of the bottom hole is slightly larger than the outer diameter of the expanding sleeve 3 in the natural state, so as to ensure the appropriate gap;

[0061] Second step: install the hole opener with the milling cutter handle of the machine tool, and use the hole opener to process the hole;

[0062] Third step: when the expanding sleeve 3 completely penetrates the bottom hole, and the corresponding hole of the tool holder 2 has not been completely penetrated, the piston rod 7 drives the taper shaft 4 to move away from the cutting tool body 1 to make the expanding claw 31 expand outward along the radial direction, as shown in Figure 5 ;

[0063] Fourth step: when the corresponding hole of the tool holder 2 is completely penetrated, as shown in Figure 6 , the expanding claw 31 in the expanding sleeve 3 forms a blocking part to prevent the residual core material from falling off from the expanding sleeve 3, so that the residual core material cannot fall off from the hole opener;

[0064] Fifth step: the machine tool controls the hole opener to move the residual core material to the residual material recycling area, and the structure of the hole opener when suspending the residual core material is as shown in Figure 7 ;

[0065] Sixth step: the machine tool controls the milling cutter handle to make the expanding sleeve 3 of the hole opener adjust to the vertical downward direction, and the piston rod 7 drives the taper shaft 4 to move close to the cutting tool body 1 to make the expanding claw 31 reset along the radial direction, so as to cancel the blocking effect on the residual core material, and the residual core material falls into the recycling area under the action of gravity.

[0066] Although the specific embodiments of the utility model have been described in combination with the drawings, it is not a limitation of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A large workpiece machining automatic coring material trepanner, characterized by, The cutting part, the tensioning part and the driving part are included. The cutting part includes a disc-shaped cutting tool body (1), and a plurality of tool holders (2) with cutting tools are arranged on the axial side of the cutting tool body (1) in the circumferential direction. The tensioning part includes a tensioning sleeve (3) and a tapered shaft (4) inside the tensioning sleeve (3), and the axial end of the tensioning sleeve (3) is a plurality of tensioning claws (31) uniformly arranged in the circumferential direction. The driving part includes a cylinder body (5) coaxially fixed on the cutting tool body (1), the end of the cylinder body (5) away from the cutting tool body (1) is fixedly connected with the axial end of the tensioning sleeve (3), and the inside of the cylinder body (5) is provided with an actuator which can move axially along the tensioning sleeve (3), and one end of the actuator is fixedly connected with the tapered shaft (4). The actuator drives the tapered shaft (4) to move away from the cutting tool body (1) to make the tensioning claws (31) outwardly expand in the radial direction or to move towards the cutting tool body (1) to make the tensioning claws (31) reset in the radial direction.

2. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, A circular ring-shaped support body (11) is coaxially fixed on the axial side of the cutting tool body (1), the axial end of the support body (11) is provided with tool seats (12) for mounting the tool holders (2) in the circumferential direction, and all the tool seats (12) on the same side in the circumferential direction are provided with positioning grooves for mounting the tool holders (2).

3. The automatic core knockout for large workpiece machining as claimed in claim 2, characterized in that, The tool holder (2) and the tool seat (12) are connected by bolts.

4. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The cutting tool body (1) is non-uniformly provided with a plurality of tool holders (2) with cutting tools in the circumferential direction on the axial side.

5. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The cutting tool body (1) is provided with 4-8 tool holders (2) with cutting tools in the circumferential direction on the axial side.

6. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The inner side wall of the end of the tensioning claw (31) away from the cylinder body (5) is in a conical surface structure, and the large end face of the inner side conical surface structure of the tensioning claw (31) faces the cylinder body (5). In the natural state, the conical surface of the inner side wall of all the tensioning claws (31) is located on the same circular table surface. The outer side wall of the end of the tapered shaft (4) away from the cutting tool body (1) is in a conical surface structure matched with the inner conical surface of the tensioning claw (31).

7. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The outer side wall of the cylinder body (5) is threadedly connected with the inner side wall of the tensioning sleeve (3).

8. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The side of the cylinder body (5) close to the cutting tool body (1) is fixedly provided with a connecting plate (54), and the connecting plate (54) and the cutting tool body (1) are connected by bolts.

9. The automatic core knockout for large workpiece machining as claimed in claim 1, wherein, The inner side wall of the cylinder body (5) includes a first cylindrical surface (51) and a second cylindrical surface (52). The actuator includes a coaxially fixed piston (6) and a piston shaft (7), the piston (6) is in sealing sliding fit with the first cylindrical surface (51), and the piston shaft (7) is coaxially fixedly connected with the tapered shaft (4) after passing through the second cylindrical surface (52). The piston (6), the first cylindrical surface (51) and the end face of the cutting tool body (1) form a sealed driving cavity (53), and the sealed driving cavity (53) is connected with a driving liquid supply system.

10. The automatic core knockout for large workpiece machining as claimed in claim 9, wherein, A limiting member is arranged at the step where the first cylindrical surface (51) and the second cylindrical surface (52) meet.

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