CN218427125U

CN218427125U - Main shaft power head capable of quickly changing cutter

Info

Publication number: CN218427125U
Application number: CN202221850174.3U
Authority: CN
Inventors: 蒋宏宝
Original assignee: Nangjing Zhongdeli Automated Machine Co ltd
Current assignee: Nangjing Zhongdeli Automated Machine Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-02-03
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a main shaft unit head that can quick change cutter, which comprises a main shaft, the inside coaxial arrangement of main shaft has cutter mounting hole, its lateral wall to be provided with the screw hole that communicates with the cutter mounting hole, the cutter mounting hole is including the drill way to inside first section of mounting hole, mounting hole second section, mounting hole third section and the mounting hole fourth section from the cutter mounting hole in proper order. Utility model can solve present main shaft unit head and change the trouble, shortcoming that the precision is low still has with low costs simultaneously, and processing is easy, long service life's advantage.

Description

Main shaft power head capable of quickly changing cutter

Technical Field

The utility model relates to a main shaft unit head that can quick change cutter belongs to the robotechnology field.

Background

The spring chuck clamping tool shank is clamped by means of shrinkage of an ER chuck in the screwing process, the structure has high requirements on the precision of an inner alignment hole and a shaft end thread at the front end of a power head main shaft, the inner alignment hole and the shaft end thread have to ensure high coaxiality basically for the installation of a main shaft bearing, and meanwhile, the inner thread and the inner conical surface of the ER chuck which are prefabricated and matched have to ensure high coaxiality.

The replacement of the track tool after normal wear in actual work is very troublesome, the disc type combination and the mechanism thereof are very compact, the layout of the power head is three types of horizontal type, vertical type and upward type installation, the space is small, the disassembly and the replacement are inconvenient, the disassembly tool can be disassembled by using a hook-shaped wrench and a solid wrench simultaneously, the cutter tool is worn, and the tool reassembly can be completed by using two tools simultaneously.

Because the space is less, the effect of exerting oneself simultaneously of both hands is difficult for obtaining the best when dismantling, and operator intensity of labour is big, and in order to reduce intensity of labour, the operator can use the hammering spanner usually to reach the purpose of quickening.

The hammering can achieve the purpose of accelerating the dismounting speed, but the brought consequences are not all favorable, the hammering is frequently used, the service life of the front bearing and the rear bearing of the main shaft is not favorable, and the bearing clearance is easily increased. It is time consuming and laborious if the bearing play needs to be readjusted.

SUMMERY OF THE UTILITY MODEL

Problem to above-mentioned prior art exists, the utility model provides a main shaft unit head that can quick change cutter can solve present main shaft unit head and change the trouble, and the shortcoming that the precision is low has with low costs simultaneously, and processing is easy, long service life's advantage.

In order to achieve the purpose, the main shaft power head capable of quickly changing the cutter comprises a main shaft, a cutter mounting hole is coaxially arranged in the main shaft, a threaded hole communicated with the cutter mounting hole is formed in the side wall of the main shaft, the cutter mounting hole comprises a first section, a second section, a third section and a fourth section of the mounting hole from an orifice of the cutter mounting hole to the inside in sequence, the first section of the mounting hole is an arc-shaped horn mouth at the outermost end of the orifice of the cutter mounting hole, the second section of the mounting hole is parallel to the axial line of the cutter mounting hole, the inner diameter of the third section of the mounting hole is enlarged firstly in the direction from outside to inside of the cutter mounting hole and then reduced to be the same as the inner diameter of the fourth section of the mounting hole, and the fourth section of the mounting hole is parallel to the axial line of the cutter mounting hole.

Preferably, the second section of the mounting hole is tangential to the first section of the mounting hole.

Preferably, the tangent point of the second section of the mounting hole and the first section of the mounting hole is smoothly transited by grinding.

Preferably, the third section of the mounting hole comprises an expanding section connected with the second section of the mounting hole, a straight section arranged at one end of the expanding section far away from the second section of the mounting hole, and a contracting section arranged at one end of the straight section far away from the second section of the mounting hole and connected with the fourth section of the mounting hole.

Preferably, smooth transition is carried out between the expansion section and the straight section, and between the straight section and the contraction section through grinding.

Preferably, the included angle between the contraction section and the tangent plane of the fourth section of the mounting hole is 4-6 degrees.

Preferably, the outer side wall of the main shaft is provided with anti-slip lines.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the front end of the power head main shaft is simple in structure and is only a straight hole, the orifice end is in an arc flat top, the technological process is short, and the production cost is lower than that of the main shaft end structure for the spring chuck;

2. only the coaxiality of the cutter mounting hole and the bearing mounting surface requires a single error chain, the machining is easy to control the precision, and the machining difficulty is reduced;

3. the tool handle is only pressed by one inner hexagon wrench, no impact and no vibration exist in the whole clamping process, no influence is caused on the main bearing, the labor intensity of operators is low, and the purposes of simple and convenient disassembly and reassembly are achieved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a detailed view of fig. 2 a according to the present invention;

fig. 4 is a detailed view of the utility model at B in fig. 3.

In the figure: 1. the tool comprises a main shaft, 2, a tool mounting hole, 2-1, a first section of the mounting hole, 2-2, a second section of the mounting hole, 2-3, a third section of the mounting hole, 2-3-1, an expansion section, 2-3-2, a straight section, 2-3-3, a contraction section, 2-4, a fourth section of the mounting hole, 3 and a threaded hole.

Detailed Description

The technical solutions in the implementation of the present invention will be clear from the following description and accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 4, the embodiment of the utility model provides a can quick change main shaft unit head of cutter, including main shaft 1, the inside coaxial arrangement of main shaft 1 has cutter mounting hole 2, its lateral wall is provided with screw hole 3 with cutter mounting hole 2 intercommunication, cutter mounting hole 2 includes that the drill way of cutter mounting hole 2 is followed to inside mounting hole first section 2-1, mounting hole second section 2-2, mounting hole third section 2-3 and mounting hole fourth section 2-4 in proper order, mounting hole first section 2-1 is cutter mounting hole 2 drill way outermost end arc horn mouth, mounting hole second section 2-2 is parallel with cutter mounting hole 2 axial lead, the internal diameter of mounting hole third section 2-3 reduces to the same as mounting hole fourth section 2-4 internal diameter in the outside-in direction's of cutter mounting hole 2 direction earlier on the direction, mounting hole fourth section 2-4 is parallel with cutter mounting hole 2 axial lead.

Preferably, the second section 2-2 of the mounting hole is tangent to the first section 2-1 of the mounting hole, so that the smooth insertion of the cutter is facilitated.

Preferably, the tangent point of the second section 2-2 of the mounting hole and the tangent point of the first section 2-1 of the mounting hole are smoothly transited by grinding, so that a cutter can be smoothly inserted conveniently, and the machining is simple and convenient.

Preferably, the third section 2-3 of the mounting hole comprises an expansion section 2-3-1 connected with the second section 2-2 of the mounting hole, a straight section 2-3-2 arranged at one end of the expansion section 2-3-1 far away from the second section 2-2 of the mounting hole, and a contraction section 2-3-3 arranged at one end of the straight section 2-3-2 far away from the second section 2-2 of the mounting hole and connected with the fourth section 2-4 of the mounting hole, wherein the expansion end 2-3-1 is convenient for

Preferably, the expanding section 2-3-1 and the straight section 2-3-2, and the straight section 2-3-2 and the contraction section 2-3-3 are smoothly transited by grinding.

Preferably, the included angle between the contraction section 2-3-3 and the section of the fourth section 2-4 of the mounting hole is 4-6 degrees.

Preferably, the outer side wall of the main shaft 1 is provided with anti-slip lines.

The working process is as follows: the tail of the cutter is inserted into the cutter mounting hole 2, the cutter firstly contacts the first section 2-1 of the mounting hole, and the first section 2-1 of the mounting hole is an arc-shaped horn mouth, so that the cutter can be easily inserted into the first section 2-1 of the mounting hole, the cutter is not required to be very aligned with the first section 2-1 of the mounting hole, and the cutter is convenient to insert due to a certain inclination angle. The cutter enters the cutter mounting hole 2 through the first section 2-1 of the mounting hole, the small clearance fit between the inner wall of the second section 2-2 of the mounting hole and the cutter handle is less than 0.005mm, the tail of the cutter moves along the inner wall of the third section 2-3 of the mounting hole under the support of the second section 2-2 of the mounting hole, then the cutter stably enters the fourth section 2-4 of the mounting hole through the contraction section 2-3-3, the fourth section 2-4 of the mounting hole is matched with the diameter of the cutter, and the cutter is fixed by a fixing bolt through the threaded hole 3.

To sum up, the utility model discloses unit head main shaft front end simple structure is only a straight hole, and the drill way end is the circular arc flat top, and the process is short, and manufacturing cost is lower than main shaft tip structure for collet chuck, and only the axiality requirement error chain singleness of cutter mounting hole and bearing installation face, the easy control precision of processing, reduce the processing degree of difficulty, and compressing tightly of handle of a knife only accomplishes with an interior hexagonal spanner only, whole clamping process does not have impact, does not have the vibration, does not produce any influence to the base bearing, operative employee low in labor strength, reached the dismantlement, the simple and easy convenience of repacking.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that the invention can be implemented in other specific forms without departing from the spirit and essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be understood by those skilled in the art that the specification as a whole and the embodiments may be combined as appropriate to form other embodiments as would be understood by those skilled in the art.

Claims

1. The utility model provides a can quick change main shaft unit head of cutter, its characterized in that, includes main shaft (1), the inside coaxial arrangement of main shaft (1) has cutter mounting hole (2), its lateral wall is provided with screw hole (3) with cutter mounting hole (2) intercommunication, cutter mounting hole (2) are including in proper order from the drill way of cutter mounting hole (2) to inside mounting hole first section (2-1), mounting hole second section (2-2), mounting hole third section (2-3) and mounting hole fourth section (2-4), mounting hole first section (2-1) are cutter mounting hole (2) drill way outermost end arc horn mouth, mounting hole second section (2-2) are parallel with cutter mounting hole (2) axial lead, the internal diameter of mounting hole third section (2-3) reduces the mounting hole fourth section (2-4) internal diameter the same as for the follow-up after expanding in the outside-in direction's of cutter mounting hole (2) direction, the mounting hole fourth section (2-4) are parallel with the axial lead of cutter mounting hole (2).

2. A spindle head for enabling quick tool change, according to claim 1, characterized in that the second section (2-2) of the mounting hole is tangential to the first section (2-1) of the mounting hole.

3. The spindle head capable of quickly changing a tool as claimed in claim 2, wherein the tangent point of the second section (2-2) of the mounting hole and the tangent point of the first section (2-1) of the mounting hole are smoothly transited by grinding.

4. The spindle head capable of quick changing a tool according to claim 1, wherein the third section (2-3) of the mounting hole comprises an enlarged section (2-3-1) connected to the second section (2-2) of the mounting hole, a straight section (2-3-2) arranged at an end of the enlarged section (2-3-1) remote from the second section (2-2) of the mounting hole, and a contracted section (2-3-3) arranged at an end of the straight section (2-3-2) remote from the second section (2-2) of the mounting hole and connected to the fourth section (2-4) of the mounting hole.

5. The spindle power head capable of quickly changing a tool according to claim 4, wherein the enlarged section (2-3-1) and the straight section (2-3-2), and the straight section (2-3-2) and the contracted section (2-3-3) are smoothly transited by grinding.

6. The spindle head for enabling quick change of tools as claimed in claim 5, wherein the angle between the narrowing section (2-3-3) and the cutting surface of the fourth section (2-4) of the mounting hole is between 4 ° and 6 °.

7. The spindle power head capable of quickly changing a cutter according to claim 1, wherein the outer side wall of the spindle (1) is provided with anti-slip lines.