CN116394065A - Machine tool cutter height adjusting device and method - Google Patents
Machine tool cutter height adjusting device and method Download PDFInfo
- Publication number
- CN116394065A CN116394065A CN202310367762.4A CN202310367762A CN116394065A CN 116394065 A CN116394065 A CN 116394065A CN 202310367762 A CN202310367762 A CN 202310367762A CN 116394065 A CN116394065 A CN 116394065A
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- Prior art keywords
- threaded
- cutter
- threaded rod
- nut
- cutter bar
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- 238000000034 method Methods 0.000 title claims description 8
- 238000003825 pressing Methods 0.000 claims abstract description 39
- 238000003801 milling Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
A machine tool cutter height adjusting device comprises a mounting plate fixed at the top of a cutter head, a threaded rod in threaded connection with a cutter bar arranged on the cutter head, a first nut sleeved on the threaded rod and capable of pressing the cutter bar, a thread bush arranged in a mounting hole of the mounting plate, a pressing plate used for pressing the thread bush and a second nut sleeved on the threaded rod and capable of pressing the thread bush; the threaded rod comprises an upper threaded section and a lower threaded section, the threads of the upper threaded section and the threads of the lower threaded section are in the same direction, the cutter bar and the first nut are respectively in threaded connection with the lower threaded section, and the threaded sleeve and the second nut are respectively in threaded connection with the upper threaded section; the threaded rod is provided with two opposite thread sections at two ends, the threaded rod is respectively in threaded connection with the cutter rod and the thread sleeve, the height difference between the cutter rod and the threaded rod is moved to realize the fine adjustment of the height of the cutter rod, and the pitch of the upper thread section and the lower thread section is changed to realize the adjustable precision.
Description
Technical Field
The invention relates to the field of metal cutting machining, in particular to a device and a method for adjusting the height of a machine tool cutter.
Background
The milling head is generally provided with a plurality of blades on the peripheral surface of the cutterhead for cutting the workpiece, and each blade is required to mill the workpiece when the cutterhead rotates, so that the stress of each blade is ensured to be uniform. However, in practice, the height of the portion of each insert extending beyond the cutterhead varies due to uneven hardness of each portion of the workpiece or the insert beginning to wear during prolonged milling, which results in higher cutting forces being received by the higher inserts and lower inserts being not. The uneven stress can bring load to the machine tool, and meanwhile, the service life of the milling cutter is reduced, and the smoothness of the machined surface of the workpiece is reduced. In order to solve the problem of different heights of cutterheads on the same cutterhead, the existing milling cutter device capable of adjusting the height of blades, such as a milling cutter device with the function of adjusting the height of blades disclosed in China patent publication No. CN103008748A, comprises a cutterhead body, wherein a driving shaft hole is arranged at the center of the cutterhead body; at least one cutter placing groove is internally cut on the circumferential surface of the cutter head body and extends to the front side surface of the cutter head body, a cutter holder cutter placing groove is arranged in the cutter placing groove, a cutter blade is fixed on a cutter holder with a chip removing inclined plane at the position corresponding to the cutter holder, and the cutter blade part extends out of the circumferential surface; the tool holder is provided with a constant-height adjusting screw for adjusting the height of the blade. The height of the blade can be adjusted by adjusting the height of the blade by the adjusting screw, but the adjusting precision is limited, and the fine adjustment cannot be achieved by depending on the precision of the adjusting screw.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for adjusting the height of a machine tool cutter, and the height adjustment precision of a blade is higher.
In order to solve the technical problems, the technical scheme of the invention is as follows: a machine tool cutter height adjusting device comprises a mounting plate fixed at the top of a cutter head, a threaded rod in threaded connection with a cutter bar arranged on the cutter head, a first nut sleeved on the threaded rod and capable of pressing the cutter bar, a thread bush arranged in a mounting hole of the mounting plate, a pressing plate used for pressing the thread bush and a second nut sleeved on the threaded rod and capable of pressing the thread bush; the threaded rod comprises an upper threaded section and a lower threaded section, the threads of the upper threaded section are identical to the threads of the lower threaded section in direction, the cutter rod and the first nut are respectively in threaded connection with the lower threaded section, and the thread sleeve and the second nut are respectively in threaded connection with the upper threaded section.
As an improvement, the mounting holes are in one-to-one correspondence with the cutter bars, and the mounting holes are arranged at the upper positions of the cutter bars.
As an improvement, the mounting hole is a stepped hole, the threaded sleeve comprises a rotating part similar to the stepped hole in shape and a protruding part arranged at the top of the rotating part, the pressing plate is used for pressing the rotating part, and the second nut is used for pressing the protruding part.
As an improvement, the pressing plate is locked on the mounting plate through bolts.
As an improvement, the mounting plate and the cutter head are integrally formed, or the mounting plate is fixedly connected with the cutter head through bolts.
As an improvement, the upper end of the threaded rod is provided with an inner hexagonal hole.
As an improvement, the cutter bar is provided with a long hole, and the locking bolt penetrates through the long hole to lock the cutter bar on the cutter head.
As an improvement, the pitch of the upper thread section is different from the pitch of the lower thread section.
The adjusting method comprises the following steps:
(1) Loosening the first nut to enable the threaded rod to rotate relative to the cutter bar, and loosening the pressing plate to enable the threaded sleeve to rotate relative to the mounting plate;
(2) Rotating the threaded rod to enable the cutter bar to move up and down relative to the threaded rod, so as to realize coarse adjustment of the height of the cutter bar;
(3) The pressing plate presses the threaded sleeve to limit the rotation of the threaded sleeve, and the second nut is loosened to enable the threaded rod to rotate relative to the threaded sleeve;
(4) The threaded rod is rotated, the cutter bar moves up and down relative to the lower thread section, the upper thread section moves up and down relative to the thread sleeve, the moving direction of the cutter bar is opposite to that of the threaded rod, and the height fine adjustment of the cutter bar is realized through the moving height difference of the cutter bar and the threaded rod.
(5) After the height of the cutter bar is adjusted, the first nut is locked and tightly pressed, and the second nut is locked and tightly pressed on the threaded sleeve.
Compared with the prior art, the invention has the beneficial effects that:
the height adjusting device is arranged on the mounting plate, and the mounting plate is used for fixing the top of the cutterhead; the threaded rod is provided with two opposite thread sections at two ends, the threaded rod is respectively in threaded connection with the cutter rod and the thread sleeve, the height difference between the cutter rod and the threaded rod is moved to realize the fine adjustment of the height of the cutter rod, and the pitch of the upper thread section and the lower thread section is changed to realize the adjustable precision.
Drawings
Fig. 1 is a schematic view of a milling head.
Fig. 2 is a schematic view of a height adjustment device.
Fig. 3 is a flow chart of the height adjustment step.
Description of the embodiments
The invention is further described below with reference to the drawings.
As shown in fig. 1, a height adjusting device of a machine tool cutter is used for adjusting the height of a milling machine cutter head blade 5, and the machine tool cutter comprises a cutter head 2 arranged on a main shaft 1, a plurality of cutter bars 4 with circumferences uniformly distributed on the cutter head 2 and a blade 5 arranged at the lower end of the cutter bars 4; the cutter bar 4 is provided with a long hole, the length of the long hole can be set according to the height-adjusting amplitude, the cutter bar 4 is locked on the cutter head 2 by the locking bolt penetrating through the long hole, and the cutter bar 4 can move up and down but cannot rotate after the locking bolt is loosened.
As shown in fig. 2, the height adjusting device 6 includes a mounting plate 3 fixed on the top of the cutterhead 2, a threaded rod 61 screwed with the cutter bar 4 mounted on the cutterhead 2, a first nut 65 sleeved on the threaded rod 61 and capable of pressing the cutter bar 4, a threaded sleeve 63 provided in the mounting hole 31 of the mounting plate 3, a pressing plate 64 for pressing the threaded sleeve 63, and a second nut 62 sleeved on the threaded rod 61 and capable of pressing the threaded sleeve 63. The mounting plate 3 and the cutter head 2 are integrally formed, or the inner side of the mounting plate 3 is fixedly connected with the cutter head 2 through bolts; a gap is arranged between the outer side of the mounting plate 3 and the top surface of the cutterhead 2, and is used for accommodating the first nut 65, so that the first nut 65 has a space for up-down adjustment. The mounting holes 31 are in one-to-one correspondence with the cutter bars 4, the mounting holes 31 are arranged at the upper positions of the cutter bars 4, and the height adjusting device 6 is used for independently adjusting each cutter bar 4; the mounting hole 31 is a stepped hole, and the mounting hole 31 is a through hole. The screw sleeve 63 comprises a rotating part 632 with a shape similar to that of the step hole and a protruding part 631 arranged at the top of the rotating part 632, the pressing plate 64 is used for pressing the rotating part 632, when the pressing plate 64 presses the screw sleeve 63 downwards, the screw sleeve 63 generates pressure on the step hole, the friction between the two parts is increased, so that the screw sleeve 63 is limited to rotate in the step hole, after the pressing plate 64 is released, the screw sleeve 63 can rotate in the step hole due to the pressure reduction, and the two states are regulated by the pressure of the pressing plate 64; the second nut 62 is used for pressing the protruding portion 631, and when the second nut 62 is locked and presses the protruding portion 631, the threaded rod 61 and the threaded sleeve 63 are connected into a whole and can rotate together; the threaded sleeve 63 is provided with an internal threaded hole in threaded fit with the threaded rod 61. The first nut 65 is in threaded connection with the threaded rod 61, the first nut 65 is located between the cutter bar 4 and the threaded sleeve 63, when the first nut 65 locks and presses the upper end of the cutter bar 4, relative rotation cannot occur between the threaded rod 61 and the cutter bar 4, and when the first nut 65 is loosened, the threaded rod 61 can rotate relative to the cutter bar 4 after the first nut 65 is far away from the cutter bar 4. The threaded rod 61 comprises an upper thread section 612 and a lower thread section 613, the thread direction of the upper thread section 612 is the same as that of the lower thread section 613, the cutter bar 4 and the first nut 65 are respectively in threaded connection with the lower thread section 613, and the thread sleeve 63 and the second nut 62 are respectively in threaded connection with the upper thread section 612; an inner hexagonal hole 611 is formed at the upper end of the threaded rod 61, so that a tool can conveniently rotate the threaded rod 61; the pitch of the upper thread section 612 is different from that of the lower thread section 613, in this embodiment, the pitch of the upper thread section 612 is greater than that of the lower thread section 613, i.e. the height of the threaded rod 61 moving up and down relative to the threaded sleeve 63 is greater than that of the cutter bar 4 moving up and down relative to the thread section for each rotation. The pressing plate 64 is provided with a through hole for the protruding part 631 to extend out, the pressing plate 64 is locked on the mounting plate 3 through a bolt, and the pressure of the pressing plate 64 to the threaded sleeve 63 is regulated through the tightness of the bolt.
The adjusting method comprises the following steps:
(1) Loosening the first nut 65 to enable the threaded rod 61 to rotate relative to the cutter bar 4 and loosening the pressing plate 64 to enable the threaded sleeve 63 to rotate relative to the mounting plate 3;
(2) Rotating the threaded rod 61 to enable the cutter bar 4 to move up and down relative to the threaded rod 61, so as to realize coarse adjustment of the height of the cutter bar 4;
(3) The pressing plate 64 presses the threaded sleeve 63 to limit the rotation of the threaded sleeve, and the second nut 62 is loosened so that the threaded rod 61 can rotate relative to the threaded sleeve 63;
(4) Rotating the threaded rod 61, the cutter bar 4 moves up and down relative to the lower thread section 613, the upper thread section 612 moves up and down relative to the thread sleeve 63, the moving direction of the cutter bar 4 is opposite to the moving direction of the threaded rod 61, and the height fine adjustment of the cutter bar 4 is realized through the moving height difference of the two; when the cutter bar 4 is finely adjusted downward, the threaded rod 61 is rotated such that the threaded rod 61 moves downward by a distance L1 relative to the threaded sleeve 63, and the cutter bar 4 moves upward by a distance L2 relative to the threaded rod 61, i.e., by a distance L1-L2, that is, by a distance that the cutter bar 44 moves downward.
(5) After the height adjustment of the cutter bar 4 is completed, the first nut 65 is locked and the cutter bar 4 is pressed, and the second nut 62 is locked and the threaded sleeve 63 is pressed.
Claims (10)
1. A machine tool cutter height adjusting device is characterized in that: the cutter head comprises a mounting plate fixed at the top of a cutter head, a threaded rod in threaded connection with a cutter bar arranged on the cutter head, a first nut sleeved on the threaded rod and capable of pressing the cutter bar, a thread bush arranged in a mounting hole of the mounting plate, a pressing plate used for pressing the thread bush and a second nut sleeved on the threaded rod and capable of pressing the thread bush; the threaded rod comprises an upper threaded section and a lower threaded section, the threads of the upper threaded section are identical to the threads of the lower threaded section in direction, the cutter rod and the first nut are respectively in threaded connection with the lower threaded section, and the thread sleeve and the second nut are respectively in threaded connection with the upper threaded section.
2. A machine tool bit height adjustment device according to claim 1, wherein: the mounting holes are in one-to-one correspondence with the cutter bars, and are arranged at the upper positions of the cutter bars.
3. A machine tool bit height adjustment device according to claim 1, wherein: the mounting hole is a step hole, the threaded sleeve comprises a rotating part similar to the step hole in shape and a protruding part arranged at the top of the rotating part, the pressing plate is used for pressing the rotating part, and the second nut is used for pressing the protruding part.
4. A machine tool bit height adjustment device according to claim 1, wherein: the pressing plate is locked on the mounting plate through bolts.
5. A machine tool bit height adjustment device according to claim 1, wherein: the mounting plate and the cutter head are integrally formed, or the mounting plate is fixedly connected with the cutter head through bolts.
6. A machine tool bit height adjustment device according to claim 1, wherein: and an inner hexagonal hole is formed in the upper end of the threaded rod.
7. A machine tool bit height adjustment device according to claim 1, wherein: the cutter bar is provided with a long hole, and the locking bolt penetrates through the long hole to lock the cutter bar on the cutter head.
8. A machine tool bit height adjustment device according to claim 1, wherein: the pitch of the upper thread section is different from that of the lower thread section.
9. The method for adjusting a height adjustment device for a tool of a machine tool according to claim 1, comprising the steps of:
(1) Loosening the first nut to enable the threaded rod to rotate relative to the cutter bar, and loosening the pressing plate to enable the threaded sleeve to rotate relative to the mounting plate;
(2) Rotating the threaded rod to enable the cutter bar to move up and down relative to the threaded rod, so as to realize coarse adjustment of the height of the cutter bar;
(3) The pressing plate presses the threaded sleeve to limit the rotation of the threaded sleeve, and the second nut is loosened to enable the threaded rod to rotate relative to the threaded sleeve;
(4) The threaded rod is rotated, the cutter bar moves up and down relative to the lower thread section, the upper thread section moves up and down relative to the thread sleeve, the moving direction of the cutter bar is opposite to that of the threaded rod, and the height fine adjustment of the cutter bar is realized through the moving height difference of the cutter bar and the threaded rod.
10. A machine tool bit height adjustment method according to claim 9, wherein: after the height of the cutter bar is adjusted, the first nut is locked and tightly pressed, and the second nut is locked and tightly pressed on the threaded sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310367762.4A CN116394065A (en) | 2023-04-07 | 2023-04-07 | Machine tool cutter height adjusting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310367762.4A CN116394065A (en) | 2023-04-07 | 2023-04-07 | Machine tool cutter height adjusting device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116394065A true CN116394065A (en) | 2023-07-07 |
Family
ID=87013834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310367762.4A Pending CN116394065A (en) | 2023-04-07 | 2023-04-07 | Machine tool cutter height adjusting device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116394065A (en) |
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2023
- 2023-04-07 CN CN202310367762.4A patent/CN116394065A/en active Pending
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