CN211276687U

CN211276687U - Welding forming cutter for finish machining of ball socket

Info

Publication number: CN211276687U
Application number: CN201922367560.1U
Authority: CN
Inventors: 章昌坤
Original assignee: Changzhou Qingfeng Yikang Machinery Co ltd
Current assignee: Changzhou Qingfeng Yikang Machinery Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-18
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a welding forming cutter for finish machining of ball sockets, which mainly comprises a cutter handle and a cutter head; the cutter head is fixed at the bottom of the cutter handle by welding; the bottom edge of the cutter head is a smooth arc line; the central point of the arc is the lowest point of the arc; the cutter head comprises two blades which are centrosymmetric; one end of the blade is fixed on the side surface of the knife handle, and the other end of the blade is fixed in the center of the bottom surface of the knife handle; the cross section of the blade is rectangular; the cross sections of the two blades are overlapped only a little; the coincident point is positioned right below the central point of the bottom surface of the knife handle; the end part of the sheet positioned on the bottom surface of the knife handle is provided with an arc-shaped chamfer; the arc-shaped cutting angle is far away from the coincident point of the two blades; during processing, the arc line is directly in line contact with the part, so that the contact surface between the cutter and the part is reduced, the cutting force and the cutting strength are reduced, and the cutter vibration phenomenon is reduced to a great extent; the radian of the arc line is consistent with that of the ball socket, the arc line can form the ball socket on the part in one step, the processing time is reduced, and the processing efficiency is improved.

Description

Welding forming cutter for finish machining of ball socket

Technical Field

The utility model relates to a processing field of ball socket especially relates to a welding forming cutter for ball socket finish machining.

Background

The fine machining of the ball socket has high requirements on position tolerance, dimensional tolerance and surface finish, a layer of cutter connecting traces with obvious step pitch cannot appear, the allowance of the ball socket cannot be too large during fine machining, and the allowance is reserved uniformly; the conventional method is to add a semi-finishing process and then process by a ball cutter and a numerical control center, but for long-term batch stable processing, the cutter consumption is large, the processing time is too long, and the processing efficiency is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves is: the welding forming cutter for finish machining of the ball socket is used for guaranteeing machining accuracy and improving machining efficiency.

In order to solve the main technical problems, the following technical scheme is adopted:

a welding forming cutter for finish machining of a ball socket comprises a cutter handle and a cutter head; the cutter head is fixed at the bottom of the cutter handle through welding; the bottom edge of the cutter head is a smooth arc line; the center point of the arc is the lowest point of the arc; the cutter head comprises two blades which are centrosymmetric; one end of the blade is fixed on the side surface of the knife handle, and the other end of the blade is fixed in the center of the bottom surface of the knife handle; the cross section of the blade is rectangular; the cross sections of the two blades are overlapped at only one point; the coincident point is positioned right below the central point of the bottom surface of the knife handle; the end part of the blade, which is positioned on the bottom surface of the knife handle, is provided with an arc-shaped chamfer; the arc-shaped cutting angle is far away from the coincident point of the two blades.

Preferably, the arc of the arc coincides with the arc of the socket; a straight line segment is arranged in the middle of the arc line; the length of the straight line segment is equal to the diameter of a round hole at the bottom of the ball socket.

Preferably, the shank is cylindrical; the bottom of the knife handle is a hemisphere; the top of the cutter head is inserted into the hemisphere.

Preferably, the bottom of the tool shank is provided with a chip groove; the chip grooves are two and are symmetrical along the center of the bottom surface of the knife handle, and the chip grooves are located on the side, far away from the arc-shaped corner cut, of the blade.

Preferably, the flutes are concave sectors; the edge of the chip groove and the bottom surface of the tool shank are provided with inclined transition surfaces.

Preferably, the tool bit is made of tungsten steel and wear-resistant, and the tool shank is made of steel.

Compared with the prior art, the utility model discloses be applied to the ball socket and add the instrument and be equipped with following advantage:

(1) when processing, the arc line at the bottom of the cutter head is directly contacted with the part in a line contact mode, so that the contact surface between the cutter and the part is reduced, the cutting force and the cutting strength are reduced, and the phenomenon of cutter vibration is reduced to a great extent.

(2) The radian of pitch arc is unanimous with the ball socket radian, and the pitch arc rotates on the part and forms the ball socket, and whole cutter is rotatory under drive arrangement's drive promptly, and its tool bit can one shot forming's formation ball socket, and it is long when having reduced processing, has improved machining efficiency.

(3) The rectangular groove is formed in the cutter handle, the top of the cutter head is inserted into the groove, the bottom of the cutter head extends out of the cutter handle, the cutter head and the cutter handle are fixed through welding, the connection strength of the cutter head and the cutter handle is enhanced, and the total cost of cutter manufacturing can be controlled through welding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

Fig. 1 is a schematic structural diagram of a ball socket according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a welding forming tool for ball and socket finishing according to an embodiment of the present invention.

Fig. 3 is a bottom view of a welding forming tool for ball and socket finishing according to an embodiment of the present invention.

Fig. 4 is a front view of a welding forming tool for ball and socket finishing according to an embodiment of the present invention.

In the figure: 1 is the handle of a knife, 2 is the tool bit, 3 is the pitch arc, 4 is the blade, 5 is coincident point, 6 is arc chamfer, 7 is the ball socket, 8 is the circular port, 9 is the straightway, 10 is the chip groove, 11 is the transition surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a welding forming tool for ball and socket finishing comprises a tool shank 1 and a tool bit 2; the tool bit 2 is fixed at the bottom of the tool holder 1 through welding, and the total cost of the tool can be controlled through welding; the bottom edge of the cutter head 2 is a smooth arc line 3, and the central point of the arc line 3 is the lowest point of the arc line 3; the tool bit 2 is plate-shaped, the bottom of the tool bit 2 is arc-shaped, and the central point of the arc line 3 is positioned right below the central point of the bottom surface of the tool handle 1; the cutter head 2 comprises blades 4 which are centrosymmetric, the cutter head 2 comprises two blades 4, namely the radian of the bottom of one blade 4 is half of the arc line 3, and the centrosymmetric point of the two blades 4 is positioned right below the central point of the bottom surface of the cutter handle 1; one end of the blade 4 is fixed on the side surface of the handle 1, the other end of the blade 4 is fixed in the center of the bottom surface of the handle 1, one end of the blade 4 is fixed on the vertical surface of the handle 1 through welding, and the other end of the blade 4 is fixed in the center of the bottom surface of the handle 1 through welding; the cross section of the blade 4 is rectangular; the cross sections of the two blades 4 coincide only a little; the coincident point 5 is positioned right below the central point of the bottom surface of the cutter handle 1, namely, only one vertical edge of the two blades 4 is coincident, the coincident edge is the axial direction of the cutter handle 4, namely, the two blades 4 are distributed left and right and are arranged front and back; the end part of the blade 4, which is positioned on the bottom surface of the tool handle 1, is provided with an arc-shaped chamfer 6; the arc-shaped cutting angle 6 is far away from the coincidence point 5 of the two blades, namely in the direction perpendicular to the thickness direction of the blades 4, one angle of the blades 4 is the angle where the coincidence point 5 is located, the other angle is the arc-shaped cutting angle 6, and the existence of the arc-shaped cutting angle 6 enables the bottom of the cutter head 2 to be in line contact with a part during machining, so that the contact surface between a cutter and the part is reduced, the cutting force and the cutting strength are reduced, and the cutter vibration phenomenon is greatly reduced.

Furthermore, the radian of the arc 3 is consistent with that of the ball socket 7, the arc 3 rotates on a part to form the ball socket 7, namely the whole cutter is driven by the driving device to rotate, and the cutter head 2 can be formed at one time to form the ball socket 7, so that the processing time is shortened, and the processing efficiency is improved; a straight line segment 9 is arranged in the middle of the arc line 3; the length of straightway 9 equals the diameter of ball socket 7 bottom circular port 8, and the part of required processing is provided with circular port 9 in ball socket 7's bottom, for guaranteeing circular port 9 top level, so be provided with straightway 9 with the centre of pitch arc 3, the mid point of straightway 9 is the central point of pitch arc 3, also can remove straightway 9 certainly, adjusts according to actual conditions.

Furthermore, the knife handle 1 is cylindrical, and the knife handle 1 is thickened and cylindrical, so that the use rigidity of the knife handle is increased, and the phenomenon of knife vibration caused by insufficient rigidity of a knife is prevented; the bottom of the knife handle 1 is a hemisphere; the top of the cutter head 2 is inserted into the hemisphere; be provided with the recess of rectangle in the hemisphere of handle of a knife 1 promptly, insert in the recess at the top of tool bit 2, the hemisphere is stretched out to the bottom, through welded fastening between tool bit 2 and the hemisphere, prevents that tool bit 2 from dropping from the hemisphere, and it is internal that the hemisphere is inserted at tool bit 2 top for when tool bit 2 rotates, the side receives handle of a knife 1's protection, thereby strengthens tool bit 2 and handle of a knife 1's joint strength, avoids the rupture of tool bit 2 and drops.

Further, a chip groove 10 is formed in the bottom of the cutter handle 1; chip groove 10 has two and follows 1 bottom surface central symmetry of handle of a knife, chip groove 10 is located keeping away from arc chamfer 6 side of blade 4, and chip groove 10 can make the piece that the cutting produced keep away from blade 4 along chip groove 10, avoids influencing machining precision.

Further, the flutes 10 are concave sectors; the edge of the chip groove 10 and the bottom surface of the tool shank 1 are provided with inclined transition surfaces 11, one side of the chip groove 10 is close to one side of the blade 4, and the other side of the chip groove enables the bottom surface of the tool shank 1 to be smoothly connected with the chip groove 10 through the inclined transition surfaces 11, so that the cutting precision is not influenced by chips, and meanwhile, the resistance of the tool is small.

Further, tool bit 2 is tungsten steel wearability material, has high rigidity and high wearability to increase the life of cutter, handle of a knife 1 is steel, and steel increases the intensity and the hardness of handle of a knife 1, avoids shaking the fracture of sword and handle of a knife 1.

The working principle is as follows: whole cutter is under positioner's drive, directly over the part that reachs required processing, and tool bit 2 direct contact part, and drive arrangement drives the cutter rotation, and the pitch arc 3 rotation formation ball socket 7 of 2 bottoms of tool bit this moment.

It should be noted that, in the present invention, "upper, lower, left and right" are defined based on the relative position of the components in the drawings, and are only for the clarity and convenience of the description of the technical solution, it should be understood that the application of the directional terms does not limit the protection scope of the present application.

Further optimizing the present invention, the above-mentioned embodiments are preferred embodiments, and are not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that modifications may be made to the above-mentioned embodiments, or equivalent replacements may be made to some technical characteristics of the above-mentioned embodiments, and any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention are all included in the scope of the present invention.

Claims

1. A welding forming cutter for ball socket finish machining is characterized in that: comprises a knife handle and a knife head; the cutter head is fixed at the bottom of the cutter handle through welding; the bottom edge of the cutter head is a smooth arc line; the center point of the arc is the lowest point of the arc; the cutter head comprises two blades which are centrosymmetric; one end of the blade is fixed on the side surface of the knife handle, and the other end of the blade is fixed in the center of the bottom surface of the knife handle; the cross section of the blade is rectangular; the cross sections of the two blades are overlapped at only one point; the coincident point is positioned right below the central point of the bottom surface of the knife handle; the end part of the blade, which is positioned on the bottom surface of the knife handle, is provided with an arc-shaped chamfer; the arc-shaped cutting angle is far away from the coincident point of the two blades.

2. The weld forming tool for ball and socket finishing of claim 1, wherein: the radian of the arc line is consistent with that of the ball socket; a straight line segment is arranged in the middle of the arc line; the length of the straight line segment is equal to the diameter of a round hole at the bottom of the ball socket.

3. The weld forming tool for ball and socket finishing of claim 1, wherein: the knife handle is cylindrical; the bottom of the knife handle is a hemisphere; the top of the cutter head is inserted into the hemisphere.

4. The weld forming tool for ball and socket finishing of claim 1, wherein: the chip groove is formed in the bottom of the cutter handle; the chip grooves are two and are symmetrical along the center of the bottom surface of the knife handle, and the chip grooves are located on the side, far away from the arc-shaped corner cut, of the blade.

5. The weld forming tool for ball and socket finishing of claim 4, wherein: the chip grooves are sunken fan-shaped; the edge of the chip groove and the bottom surface of the tool shank are provided with inclined transition surfaces.

6. The weld forming tool for ball and socket finishing of claim 1, wherein: the tool bit is made of tungsten steel wear-resistant materials, and the tool handle is made of steel.