CN107639246B - Cutter coupling mechanism and have this coupling mechanism's cutter - Google Patents
Cutter coupling mechanism and have this coupling mechanism's cutter Download PDFInfo
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- CN107639246B CN107639246B CN201711066415.9A CN201711066415A CN107639246B CN 107639246 B CN107639246 B CN 107639246B CN 201711066415 A CN201711066415 A CN 201711066415A CN 107639246 B CN107639246 B CN 107639246B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 230000008878 coupling Effects 0.000 title claims abstract description 24
- 238000010168 coupling process Methods 0.000 title claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 55
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 description 14
- 238000003801 milling Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The application discloses coupling mechanism for cutter, the cutter includes tool bit, handle of a knife, the tool bit includes connecting portion and cutting portion, the handle of a knife includes connecting sleeve, coupling mechanism includes the stairstepping connecting portion that sets up on the tool bit, connecting sleeve that sets up on the handle of a knife and the retaining member that is used for fixed connection tool bit and handle of a knife, when installation tool bit and handle of a knife, only need with connecting portion install in connecting sleeve, reuse retaining member locking tool bit and handle of a knife. When the cutter head is disassembled, the locking piece is unscrewed, and the cutter head can be taken out of the cutter handle. By using the connecting mechanism provided by the application, the operation of replacing the tool bit is greatly simplified, the tool bit is replaced on line on the machine tool by the tool handle, and the trouble that the tool handle needs to be detached from the machine tool when the tool bit is replaced is avoided.
Description
Technical Field
The application relates to the technical field of cutter machining, in particular to a cutter connecting mechanism and a cutter with the mechanism.
Background
The tool for cutting comprises a tool bit and a tool shank, wherein the tool bit comprises a cutting part and a connecting part, the tool bit is fixedly arranged on the tool shank through the connecting part, the tool shank is fixedly arranged on a machine tool, and the tool bit is driven to rotate and move through the rotation and the movement of a manipulator on the machine tool, so that a workpiece to be machined is cut.
The tool bit mounting hole and the tool shank mounting hole are formed in the center of the tool bit and the center of the tool shank in the axial direction respectively, and the tool bit is fixedly mounted on the tool shank through the double-headed screw rod arranged in the tool bit mounting hole and the tool shank mounting hole, so that when the tool bit is assembled and disassembled, a screwdriver needs to be stretched into the connecting end of the tool bit and the tool shank from one end of the tool shank, which is connected with a machine tool, and the screwing or unscrewing of the double-headed screw is controlled to realize the assembly and disassembly of the tool bit. When the tool bit needs to be replaced, the tool bit needs to be removed from the machine tool, the tool bit is replaced, and the tool bit is installed on the machine tool after the tool bit is replaced. Therefore, when the tool bit is replaced, not only is the assembly and disassembly between the tool bit and the tool shank inconvenient, but also the assembly and disassembly between the tool shank and the machine tool are required.
Disclosure of Invention
The application provides a cutter coupling mechanism and have this coupling mechanism's cutter. The tool bit and the tool shank with the connecting mechanism can be assembled and disassembled in the state that the tool shank is fixedly arranged on the machine tool, and the tool shank is not required to be disassembled from the machine tool, namely, the tool bit is conveniently and quickly arranged, so that the problem that the cutting tool is inconvenient to assemble and disassemble when the tool bit is replaced is solved.
The present application provides the following aspects:
in a first aspect, the present application provides a coupling mechanism for a tool, the tool comprising a tool bit 1, a tool shank 2, the tool bit 1 comprising a coupling portion 11 and a cutting portion 12, the tool shank 2 comprising a coupling sleeve 21, the coupling mechanism comprising a stepped coupling portion 11 provided on the tool bit 1, the coupling sleeve 21 provided on the tool shank 2 and a locking member 3 for fixedly coupling the tool bit 1 with the tool shank 2,
the connecting part 11 comprises a circular truncated cone-shaped locking part 111 and an adapting key 112 which is arranged on the end surface of the locking part 111 and is coaxial with the circular truncated cone-shaped locking part 111;
a locking groove 1111 is formed in the outer wall of the locking portion 111 along the circumferential direction of the locking portion 111;
a stepped counter bore coaxial with the connecting sleeve is formed in the connecting sleeve along the axial direction of the connecting sleeve from the end surface 211 of the connecting sleeve, and the stepped counter bore comprises a locking hole 2111 and a switching hole 2112;
a locking member mounting hole 212 corresponding to the locking groove 1111 is formed in the wall of the connecting sleeve 21.
In one implementation, the taper of the locking portion 111 is 1:3-7; and/or
The bottom diameter R2 of the locking portion 111 is 2/5 to 4/5 of the bottom diameter R1 of the cutting portion 12.
In one possible embodiment, the locking groove 1111 is an annular groove formed along the circumferential direction of the locking portion 111.
In one implementation, the annular groove includes a locking groove clearance surface 1112, a locking groove locking surface 1114, and a locking groove bottom 1115, wherein,
the clearance surface 1112 of the locking groove is close to the cutting part 12, the generatrix thereof is a straight line,
the locking groove locking surface 1114 is near the top end of the locking part, the bus bar is straight,
the locking groove bottom 1115 is smoothly connected with the locking groove clearance surface 1112 and the locking groove locking surface 1114, and the bus bar is an arc.
In one possible approach, the locking groove locating surface 1116 is perpendicular to the axis M and bisects the locking groove bottom 1115; and/or
The bus of the clearance surface 1112 of the locking groove and the locating surface 1116 of the locking groove form a first half angle alpha, the bus of the locking surface 1114 of the locking groove and the locating surface 1116 of the locking groove form a second half angle beta, the first half angle alpha is 15-60 degrees, and the second half angle beta is 15-60 degrees.
In one possible embodiment, the distance L3 between the locking groove bottom 1115 and the bottom of the cutting portion 12 is 4/10 to 7/10 of the locking portion height L1.
In one implementation, the locking groove 1111 is a conical counterbore.
In one implementation, the locking groove 1111 includes a groove surface 1117 and a second groove bottom 1118; and/or
The second groove bottom 1118 is a plane or an arc surface.
In one possible manner, the taper angle of the locking groove 1111 is 30 ° to 120 °; and/or
An included angle between the axis P of the locking groove 1111 and the axis M of the locking part is gamma, and the included angle gamma is 60-100 degrees; and/or
The distance L5 between the second groove bottom 1118 and the bottom surface of the locking portion is 4/10 to 7/10 of the height L1 of the locking portion.
When the connecting mechanism is used for installing the tool bit and the tool shank, the connecting part is only required to be placed in the connecting sleeve, the locking piece is screwed into the locking groove through the locking piece installation hole, and the fastening degree between the tool bit and the tool shank is adjusted by adjusting the screwing depth of the locking piece in the locking groove. During cutting, the tool bit transmits torque through the transfer key. When the cutter head is disassembled, the locking piece is unscrewed, and the cutter head can be taken out of the cutter handle. By using the connecting mechanism provided by the application, the operation of replacing the tool bit is greatly simplified, the tool bit is replaced on line on the machine tool by the tool handle, and the trouble that the tool handle needs to be detached from the machine tool when the tool bit is replaced is avoided.
In a second aspect, the present application provides a tool provided with a tool coupling mechanism according to the first aspect.
Drawings
FIG. 1a is an exploded view of a cross-sectional structure of a tool according to the present embodiment;
FIG. 1b is an assembly view of a turning insert and a tool provided in the present embodiment;
fig. 2 is a schematic structural view of a tool bit of a ball cage according to the present embodiment;
FIG. 3 is a schematic view of another type of tool tip for a ball cage according to the present embodiment;
FIG. 4 is a schematic view of another tool bit according to the present embodiment;
FIG. 5 is a schematic view of another tool bit according to the present embodiment;
FIG. 6 is a schematic view of another tool tip according to the present embodiment;
FIG. 7 is a schematic view of another tool bit according to the present embodiment;
FIG. 8 is a schematic view of another embodiment of a tool bit;
FIG. 9 is a schematic view of another tool tip according to the present embodiment;
FIG. 10 is a schematic view of another embodiment of a tool bit;
fig. 11 is a schematic perspective view of a tool bit of the present embodiment;
fig. 12 is a side view of the tool shank provided in this example.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The present embodiment provides a tool connection mechanism, and the following describes a tool connection mechanism provided by the embodiment of the present invention by taking a ball cage tool as an example.
Referring to fig. 1a, fig. 1a is an exploded view of a cross-sectional structure of a tool according to the present embodiment. In one possible implementation, as shown in fig. 1a, the tool includes a tool bit 1, a tool shank 2, and a locking member 3 for securing the tool bit 1 to the tool shank 2. The tool bit 1 comprises a cutting portion 12 and a stepped connecting portion 11 coaxially arranged in sequence. The shank 2 comprises a connecting sleeve 21.
Referring to fig. 1b, fig. 1b is an assembly diagram of a turning insert and a tool provided in this embodiment, and after a tool bit is mounted on the shank, concentricity of the tool bit 1 and the shank 2 is less than or equal to 0.03mm.
In a specific embodiment, please refer to fig. 2, fig. 2 is a schematic structural diagram of a tool bit of a ball cage according to the present embodiment. As shown in fig. 2, the connection portion 11 includes a circular truncated cone-shaped locking portion 111 and an adapting key 112 provided on an end surface of the locking portion 111. The locking portion 111 is coaxial with the transfer key 112. The cutting part 12 is fixedly connected with the connecting part 11, and the bottom surface of the cutting part 12 is connected with the bottom surface of the connecting part 11. An annular positioning surface 121 having a width of 1/2 (R1-R2) of the difference in radius between the bottom surface of the cutting portion and the bottom surface of the locking portion is formed on the bottom surface of the cutting portion 12. A locking groove 1111 is formed in the outer wall of the locking portion 111 along the circumferential direction of the locking portion 111.
Since the cutting portion 12 rotates around the axis M thereof at a high speed to cut the surface of the workpiece to be machined at the time of cutting machining, the pressure between the cutting portion 12 and the surface of the workpiece to be machined is extremely large, and the direction of the pair of pressures is perpendicular to the axis M; further, since the cutting portion 12 reciprocates in the axial direction M to adjust the machining position, the force acting between the connecting portion 11 and the shank 2 is also very large, and the direction of the force is parallel to the axial direction M. Specifically, when the tool is fed, the connecting portion 11 and the tool shank 2 are pressed in opposite directions; when the tool is retracted, the connecting part 11 and the tool handle 2 are pulled in opposite directions. Therefore, the stability and the firmness of the connection between the tool bit 1 and the tool shank 2 are important for ensuring a high precision cutting process. While the stability and the firmness of the connection between the tool bit 1 and the tool shank 2 are closely related to the taper and the height of the locking part.
In one possible implementation, the taper of the locking portion 111 is 1:3-7, such as 1:5. Thus, even if the outer diameter of the locking portion 111 is changed smoothly, the locking portion 111 can have a sufficient height, and the outer wall of the connecting portion 11 can be closely attached to the inner wall of the connecting sleeve 21 without forming a gap after the tool bit 1 is mounted on the tool shank 2. Thereby, the stability and the firmness of the connection between the tool bit 1 and the tool shank 2 are ensured.
Alternatively, the height L1 of the locking portion 111 is 0.5 to 1.2 times, such as 0.8 times, the diameter R2 of the bottom surface of the locking portion. As can be seen from fig. 1a, the greater the height of the connecting portion 11, the less pressure it carries, which is beneficial for extending the service life of the tool. Meanwhile, under the condition that the connecting portion 11 has the taper, the transfer key 112 arranged on the end face of the connecting portion 11 is made to have a sufficient action area, so that the height L1 of the locking portion 111 is selected to be 0.5-1.2 times, such as 0.8 times, of the bottom surface diameter R2 of the locking portion.
In this application, the "height" refers to a distance from the top surface to the bottom surface of the component along the axial direction M of the component.
Alternatively, the bottom surface diameter R2 of the locking portion 111 is 2/5 to 4/5, preferably 3/5 of the bottom surface diameter R1 of the cutting portion 12. In the cutting process, when the cutting tool is fed, a pressure in a direction opposite to that of the tool bit 1 and the shank 2 is generated, and this pressure acts on the annular positioning surface 121 of the cutting portion 12 and the end surface 211 of the coupling sleeve 21. Therefore, the bottom diameter R2 of the locking portion 111 is less than 4/5 of the bottom diameter R1 of the cutting portion 12 so that the annular positioning surface 121 is sufficiently pressed, thereby ensuring that the annular positioning surface 121 and the end surface 211 of the coupling sleeve are not crushed.
Further, in the cutting process, in order to provide a sufficient connection strength between the locking portion 111 and the cutting portion 12 and to ensure that the locking portion 111 has the taper, the transfer key 112 has a sufficient area, and the bottom diameter R2 of the locking portion 111 is selected to be 2/5 or more of the bottom diameter R1 of the cutting portion 12.
Alternatively, as shown in fig. 2, the locking groove 1111 is an annular groove opened along the circumferential direction of the locking part 111. The annular groove includes a locking groove clearance surface 1112, a locking groove locking surface 1114, and a locking groove bottom 1115. Wherein, the clearance surface 1112 of the locking groove is close to the cutting part 12, and the bus is a straight line. The locking groove locking surface 1114 is close to the top end of the locking part 111, and the bus bar is a straight line. The locking groove bottom 1115 is smoothly connected with the locking groove clearance surface 1112 and the locking groove locking surface 1114, and the bus bar is an arc. Thereby reducing the stress on the locking groove bottom 1115 and reducing the potential risk of breaking the locking portion 111 at the locking groove 1111.
Optionally, locking groove locating surface 1116 is perpendicular to axis M and bisects locking groove bottom 1115. The bus bar of the lock groove clearance face 1112 and the lock groove locating face 1116 form a first half angle α and the bus bar of the lock groove locking face 1114 and the lock groove locating face 1116 form a second half angle β. The first half angle α and the second half angle β may be equal or unequal. Optionally, the first half angle α is 15 ° to 60 °, and the second half angle β is 15 ° to 60 °. After the locking piece is installed in the locking groove 1111, sufficient locking force can be provided for the tool bit 1 and the tool shank 2, the locking degree is increased, and then the stability of the tool bit 1 during cutting processing is improved.
As shown in fig. 2, the first half angle α is equal to the second half angle β, thereby simplifying the machining operation of the locking groove 1111.
Fig. 3 is a structural view of another type of the rzeppa head according to the present embodiment, as shown in fig. 3, in which the first half angle α is larger than the second half angle β. For example, the first half angle α is greater than the second half angle β by 3 ° to 10 °. Therefore, after the locking member 3 is mounted in the locking groove 1111, under the condition that the insertion depth is the same, the component force of the locking member 3 on the tool bit 1 along the axial direction M is larger, so that the locking member 3 locks the tool bit 1 more firmly, and the connection reliability of the tool bit 1 and the tool shank 2 in the cutting process is further increased.
The diameter R4 of the locking portion at the bottom of the locking groove 1111 is 4/10 to 7/10, such as 6/10, of the diameter R2 of the bottom surface of the locking portion 111. So that the locking member 3 can be stably mounted in the locking groove 1111. And, as shown in fig. 1b, after the tool bit is mounted on the tool holder, there is an eccentricity H between the axis of the locking member 3 and the axis of the locking groove 1111, where the eccentricity H ranges from 0.05mm to 0.5mm, for example, 0.2, so that a gap is formed between the locking groove clearance surface 1112 and the locking member 3, and the locking member 3 applies an axial force to the locking groove locking surface 1114, so that the tool bit 1 moves along the axial direction M under the action of the locking member 3, and is fixedly mounted inside the connecting sleeve 21, and further, the outer wall of the locking portion 111 and the inner wall of the connecting sleeve 21, the annular positioning surface 121 and the sleeve end surface 211 can be simultaneously and tightly attached, thereby ensuring a higher bonding strength.
The distance L3 between the locking groove bottom 1115 and the bottom surface of the cutting portion 12 is 4/10 to 7/10, such as 5/10, of the locking portion height L1.
The locking portion 111 provided in this embodiment can also be applied to other cutting tips, as well, in conjunction with fig. 4 to 10. Specifically:
referring to fig. 4, fig. 4 is a schematic structural diagram of another tool bit according to the present embodiment. Referring to fig. 4, the tool bit 1 is a welding type milling tool bit for milling an end face, a square shoulder, a groove and the like, and comprises a cutting portion 12 and a stepped connecting portion 11 which are coaxially and sequentially arranged. The cutting portion 12 is used for milling an end face, a square shoulder, a groove, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 2 or fig. 3, and will not be described herein.
Referring to fig. 5, fig. 5 is a schematic structural diagram of another tool bit according to the present embodiment. Referring to fig. 5, the tool bit 1 is a formed tool bit for spot facing, boring, reaming and the like, and includes a cutting portion 12 and a stepped connecting portion 11 coaxially and sequentially disposed. The cutting portion 12 is used for spot facing, boring, reaming, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 2 or 3, and will not be described again.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another tool bit according to the present embodiment. With reference to fig. 6, the tool bit 1 is an integral milling head for milling an end face, a square shoulder, a groove and the like, and comprises a cutting portion 12 and a stepped connecting portion 11 which are coaxially and sequentially arranged. The cutting portion 12 is used for milling an end face, a square shoulder, a groove, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 2 or fig. 3, and will not be described herein.
In another embodiment, please refer to fig. 7, fig. 7 is a schematic diagram of another tool bit structure provided in this embodiment. As shown in fig. 7, the locking groove 1111 is a conical counter bore. Optionally, a plurality of locking grooves 1111 are formed on the outer wall of the locking part.
Further, the plurality of locking grooves 1111 are uniformly provided along the circumferential direction N of the locking part 111.
The locking groove 1111 includes a groove surface 1117 and a second groove bottom 1118. The second groove bottom 1118 is a plane or an arc surface, so that the stress applied to the second groove bottom 1118 during cutting is reduced, and the service life of the tool bit is prolonged.
Optionally, when the second groove bottom 1118 is circular, the second groove bottom 1118 is smoothly transited, and the stress of the second groove bottom 1118 is reduced.
The taper angle of the locking groove 1111 is 30 deg. to 120 deg., such as 90 deg.. After the locking piece is installed in the locking groove 1111, sufficient locking force can be provided for the tool bit 1 and the tool shank 2, the locking degree is increased, and then the stability of the tool bit 1 during cutting processing is improved.
Alternatively, the axis P of the locking groove 1111 may be inclined at an angle γ with respect to the axis M of the locking portion, the angle γ being 75 ° to 105 °, such as 90 °. Therefore, after the locking member 3 is mounted in the locking groove 1111, under the condition that the insertion depth is the same, the component force of the locking member 3 on the tool bit 1 along the axial direction M is larger, so that the locking member 3 locks the tool bit 1 more firmly, and the connection reliability of the tool bit 1 and the tool shank 2 in the cutting process is further increased.
Optionally, the distance L5 between the second groove bottom 1118 and the bottom surface of the cutting portion 12 is 4/10-7/10, such as 5/10, of the height L1 of the locking portion. The locking portion 111 provided in connection with the embodiment of fig. 7 may also be applied to other cutting tips, as in L3. Specifically:
referring to fig. 8, fig. 8 is a schematic structural diagram of another tool bit according to the present embodiment. Referring to fig. 8, the tool bit 1 is a welding type milling tool bit for milling an end face, a square shoulder, a groove and the like, and comprises a cutting portion 12 and a stepped connecting portion 11 which are coaxially and sequentially arranged. The cutting portion 12 is used for milling an end face, a square shoulder, a groove, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 7, and will not be described herein.
Referring to fig. 9, fig. 9 is a schematic structural diagram of another tool bit according to the present embodiment. Referring to fig. 9, the tool bit 1 is a molded tool bit for spot facing, boring, reaming and the like, and includes a cutting portion 12 and a stepped connecting portion 11 coaxially and sequentially disposed. The cutting portion 12 is used for spot facing, boring, reaming, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 7, and will not be described again.
Referring to fig. 10, fig. 10 is a schematic structural diagram of another tool bit according to the present embodiment. Referring to fig. 10, the tool bit 1 is an integral milling tool bit for milling end surfaces, square shoulders, grooves and the like, and comprises a cutting part 12 and a stepped connecting part 11 which are coaxially and sequentially arranged. The cutting portion 12 is used for milling an end face, a square shoulder, a groove, etc., and the connecting portion 11 is the same as the connecting portion 11 of the tool bit shown in fig. 7, and will not be described herein.
The inventor has found that if the locking groove 1111 is an annular groove, the tool bit can be mounted in the coupling sleeve 21 in the forward and reverse directions when the tool bit 1 is mounted, and if the locking groove 1111 is a conical counterbore, the tool bit 1 is mounted in the coupling sleeve 21 in a predetermined position when the tool bit is mounted, and the conical counterbore provides a supporting force for the locker 3 in the circumferential direction of the locking portion during cutting, so that the use of the conical counterbore as the locking groove can provide more sufficient reliability for the tool bit 1 and the coupling sleeve 21.
Referring to fig. 11, fig. 11 is a schematic perspective view of a tool bit of the present embodiment. As shown in fig. 11, an adapter key 112 is coaxially provided on the end surface of the locking portion 111. The cross section of the transfer key 112 is waist-shaped. The length L9 of the transfer key 112 is 4/10-7/10, such as 5/10, of the bottom diameter R2 of the locking part.
Optionally, the width L10 of the transfer key 112 is 7/10 to 9/10, such as 8/10, of the length L9 of the transfer key 112.
Optionally, referring to fig. 2, the height L6 of the transfer key 112 is 1/5-1/3, such as 1/4, of the height L1 of the locking portion 111. So that the locking part 111 is stably installed in the transferring hole 2112.
Referring to fig. 1a and 12, fig. 12 is a side view of the shank provided in this example, the tool further includes a shank 2, and the shank 2 has a connecting sleeve 21. A stepped counter bore coaxial with the connecting sleeve is formed in the connecting sleeve along the axial direction of the connecting sleeve from the end surface 211 of the connecting sleeve, and the stepped counter bore comprises a locking hole 2111 and a switching hole 2112.
The diameter R5 of the connecting sleeve 21 is 0.9 to 1 times, such as 1 time, the diameter R1 of the bottom surface of the cutting portion, that is, r5=r1.
The locking hole 2111 is a circular truncated cone-shaped hole, the taper of the circular truncated cone-shaped hole is equal to that of the locking portion 111, the depth L7 of the locking hole 2111 is greater than the height L1 of the locking portion, and the diameter R6 of the locking hole 2111 on the end face 211 of the connecting sleeve is equal to the diameter R2 of the bottom face of the locking portion. So that the locking portion 111 can be closely fitted inside the locking hole 2111. The tool handle 2 is a cylindrical straight cylinder, and the diameter R7 on the end surface 211 of the connecting sleeve is equal to the diameter R5 of the connecting sleeve 21.
The transfer hole 2112 is a square-like hole, and the depth L8 of the transfer hole 2112 is greater than or equal to the transfer key height L6, so that the transfer key 112 can be axially clearance fit with the transfer hole 2112 after being mounted. The difference L11-L10 between the width of the adapter hole 2112 and the width of the adapter 112 is in the range of 0.02-0.1 mm, and the difference L12-L9 between the length of the adapter hole 2112 and the length of the adapter 112 is in the range of 0.02-0.1 mm, so that the adapter key 112 can be in radial clearance fit with the adapter hole 2112 after being mounted, and the radial rotation torque force is increased.
A locking member mounting hole 212 corresponding to the locking groove 1111 is formed in the wall of the connecting sleeve 21 for mounting a locking member.
In this application, the locking member 3 is a screw or other member having the same function.
The application also provides a cutter using the connecting mechanism, wherein the cutter comprises a cutter head and a cutter handle, the cutter head comprises the connecting part, and the cutter handle comprises the connecting sleeve. The cutter that this embodiment provided can be installed the cutter head under the state of handle of a knife on the lathe, is convenient for change the cutter head, and the precision of installation is high moreover.
The foregoing detailed description has been provided for the purposes of illustration in connection with specific embodiments and exemplary examples, but such description is not to be construed as limiting the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications and improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of the application is defined by the appended claims.
Claims (9)
1. The connecting mechanism is characterized in that the connecting mechanism is used for a cutter, the cutter comprises a cutter head (1) and a cutter handle (2), the cutter head (1) comprises a connecting part (11) and a cutting part (12), the cutter handle (2) comprises a connecting sleeve (21), the connecting mechanism comprises a stepped connecting part (11) arranged on the cutter head (1), the connecting sleeve (21) arranged on the cutter handle (2) and a locking piece (3) used for fixedly connecting the cutter head (1) and the cutter handle (2),
the connecting part (11) comprises a circular truncated cone-shaped locking part (111) and an adapter key (112) which is arranged on the end surface of the locking part (111) and is coaxial with the circular truncated cone-shaped locking part (111);
the height L1 of the locking part (111) is 0.5-1.2 times of the diameter R2 of the bottom surface of the locking part, and the height L1 of the locking part (111) is the distance from the top surface of the locking part (111) to the bottom surface of the locking part (111) along the axial direction of the locking part (111); the taper of the locking part (111) is 1 (3-7); and/or the bottom surface diameter R2 of the locking portion (111) is 2/5~4/5 of the bottom surface diameter R1 of the cutting portion (12);
a locking groove (1111) is formed in the outer wall of the locking part (111) along the circumferential direction of the locking part (111);
a stepped counter bore coaxial with the connecting sleeve is formed in the connecting sleeve along the axial direction of the connecting sleeve from the end surface (211) of the connecting sleeve, and the stepped counter bore comprises a locking hole (2111) and a switching hole (2112);
a locking piece mounting hole (212) corresponding to the locking groove (1111) is formed in the wall of the connecting sleeve (21).
2. The coupling mechanism according to claim 1, wherein the locking groove (1111) is an annular groove opened in a circumferential direction of the locking portion (111).
3. The connection mechanism of claim 2, wherein the annular groove comprises a locking groove clearance surface (1112), a locking groove locking surface (1114), and a locking groove bottom (1115), wherein,
the clearance surface (1112) of the locking groove is close to the cutting part (12), the bus of the clearance surface is a straight line,
the locking surface (1114) of the locking groove is close to the top end of the locking part, the bus is a straight line,
the locking groove bottom (1115) is smoothly connected with the locking groove clearance surface (1112) and the locking groove locking surface (1114), and the bus is an arc.
4. A connection according to claim 3, characterized in that the locking groove locating surface (1116) is perpendicular to the axis M of the locking part and bisects the locking groove bottom (1115); and/or
The bus of the locking groove clearance surface (1112) and the locking groove positioning surface (1116) form a first half angle alpha, the bus of the locking groove locking surface (1114) and the locking groove positioning surface (1116) form a second half angle beta, the first half angle alpha is 15-60 degrees, and the second half angle beta is 15-60 degrees.
5. The connecting mechanism according to claim 4, wherein a distance L3 between the locking groove bottom (1115) and the bottom surface of the cutting portion (12) is 4/10 to 7/10 of a height L1 of the locking portion.
6. The coupling mechanism of claim 1, wherein the locking groove (1111) is a conical counterbore.
7. The connection according to claim 6, characterized in that the locking groove (1111) comprises a groove surface (1117) and a second groove bottom (1118); and/or
The second groove bottom (1118) is a plane or an arc surface.
8. The connection according to claim 7, characterized in that the cone angle of the locking groove (1111) is 30 ° -120 °; and/or
An included angle between an axis P of the locking groove (1111) and an axis M of the locking part is gamma, and the included angle gamma is 60-100 degrees; and/or
The distance L5 between the second groove bottom (1118) and the bottom surface of the locking part is 4/10-7/10 of the height L1 of the locking part.
9. A tool comprising a coupling mechanism according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066415.9A CN107639246B (en) | 2017-11-02 | 2017-11-02 | Cutter coupling mechanism and have this coupling mechanism's cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066415.9A CN107639246B (en) | 2017-11-02 | 2017-11-02 | Cutter coupling mechanism and have this coupling mechanism's cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107639246A CN107639246A (en) | 2018-01-30 |
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| CN109290993A (en) * | 2018-11-12 | 2019-02-01 | 广东奥能五金工具有限公司 | Integral electric screwdriver |
| CN109759610B (en) * | 2019-04-01 | 2024-03-19 | 松德刀具（长兴）科技有限公司 | Telescopic reverse scraper |
| CN113770644A (en) * | 2021-10-08 | 2021-12-10 | 深圳市鑫金泉精密技术股份有限公司 | Tool bit and roll extrusion sword |
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|---|---|---|---|---|
| CN201579425U (en) * | 2009-10-21 | 2010-09-15 | 中旸科技有限公司 | Combined cutting tool |
| CN102284875A (en) * | 2011-08-11 | 2011-12-21 | 郑州市钻石精密制造有限公司 | Changeable small-taper shank cutter system |
| TWM459925U (en) * | 2012-09-19 | 2013-08-21 | Jia Mao Chang Co Ltd | Structure improvement of knife |
| CN103846506A (en) * | 2014-03-11 | 2014-06-11 | 贵州凯星液力传动机械有限公司 | Reverse boring processing cutter device and use method thereof for hard sealing hole end surface |
| CN207402126U (en) * | 2017-11-02 | 2018-05-25 | 北京沃尔德金刚石工具股份有限公司 | A kind of cutter bindiny mechanism and the cutter with the bindiny mechanism |
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| SE433574B (en) * | 1978-09-26 | 1984-06-04 | Sandvik Ab | CUTTING TOOLS AND TOOLS FOR THIS |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201579425U (en) * | 2009-10-21 | 2010-09-15 | 中旸科技有限公司 | Combined cutting tool |
| CN102284875A (en) * | 2011-08-11 | 2011-12-21 | 郑州市钻石精密制造有限公司 | Changeable small-taper shank cutter system |
| TWM459925U (en) * | 2012-09-19 | 2013-08-21 | Jia Mao Chang Co Ltd | Structure improvement of knife |
| CN103846506A (en) * | 2014-03-11 | 2014-06-11 | 贵州凯星液力传动机械有限公司 | Reverse boring processing cutter device and use method thereof for hard sealing hole end surface |
| CN207402126U (en) * | 2017-11-02 | 2018-05-25 | 北京沃尔德金刚石工具股份有限公司 | A kind of cutter bindiny mechanism and the cutter with the bindiny mechanism |
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