CN212398147U - Knife rest with self-protection device - Google Patents
Knife rest with self-protection device Download PDFInfo
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- CN212398147U CN212398147U CN202021011030.XU CN202021011030U CN212398147U CN 212398147 U CN212398147 U CN 212398147U CN 202021011030 U CN202021011030 U CN 202021011030U CN 212398147 U CN212398147 U CN 212398147U
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- main shaft
- taper sleeve
- knife rest
- self
- transmission gear
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Abstract
The utility model provides a take self-protection device's knife rest, including power input mechanism, main shaft drive gear and knife rest main shaft, main shaft drive gear installs and drives the knife rest main shaft rotation in the outside of knife rest main shaft interlude, knife rest self-protection mechanism is installed to the right half between knife rest main shaft and the main shaft drive gear, knife rest self-protection mechanism includes interior taper sleeve, outer taper sleeve and locking screw, interior taper sleeve cover is in the knife rest main shaft outside, the left half of interior taper sleeve excircle is conical surface structure, outer taper sleeve embedding is installed on main shaft drive gear hole wheel hub, outer taper sleeve inner wall is conical surface structure, outer taper sleeve inner wall is overlapped on interior taper sleeve left side conical surface through conical surface cooperation, locking screw passes interior taper sleeve right side round platform screw thread fastening at; the left end of the tool rest main shaft is connected with a cutter head; the utility model discloses installation knife rest self-protection mechanism can in time take place the self-protection when the numerical control machine tool processing crashes, falls to minimum with the loss of equipment, has optimized processing equipment efficiency.
Description
Technical Field
The utility model belongs to the technical field of knife rest equipment, concretely relates to take self-protection device's knife rest.
Background
At present, a large number of numerically controlled lathes are used in the metal cutting industry, and the numerically controlled lathes often have the condition of collision in the use process, so that a machine tool or a numerically controlled tool rest can be caused to break down, equipment cannot be normally used, and the equipment can be scrapped seriously, thereby causing serious loss. The conditions that lead to a crash are generally two main conditions: 1. when a lathe is lathed, a program is wrong, the turning allowance is too large, or a tool is selected wrongly, so that the numerical control tool rest collides with a workpiece or a chuck; 2. in the tool changing process of the numerical control tool rest, when tool changing is not completed, the lathe carries out processing, and the numerical control tool rest is collided with a workpiece or a chuck. Therefore, it is necessary to avoid such things or to have a self-protection device to protect the equipment when such things happen. In the structure of the traditional tool rest, a transmission mechanism is generally connected with a tool rest main shaft through a spline or a square pin, the transmission mechanism and the tool rest main shaft are relatively fixed once connected, and when collision occurs, the transmission mechanism does not have a buffering function, so that the numerical control tool rest and a machine tool cannot be protected.
Patent application No. CN201710377113.7, the contents of which are: the invention discloses a numerical control tool rest cutting overload protection device, which comprises a driving side shaft sleeve, a steel ball, a reset shaft sleeve, a cylindrical stop block, a left side push plate, a long spring, a short spring, a long spring sleeve, a short spring sleeve, a right side push plate, a driven side shaft sleeve and an adjusting shaft sleeve, wherein the driving side shaft sleeve is arranged on the driving side; one side of the driven side shaft sleeve is connected with the driving side shaft sleeve, and the other side of the driven side shaft sleeve is connected with the adjusting shaft sleeve; the reset shaft sleeve is positioned on the outer side of the driven side shaft sleeve; the end face of the driving side shaft sleeve is provided with a groove, the driven side shaft sleeve is provided with a first steel ball hole, a steel ball is arranged in the first steel ball hole, and when torque needs to be transmitted, the steel ball is pressed into the groove of the driving side shaft sleeve by a spring. The invention adopts a mechanical overload protection mechanism to simplify the fault elimination process. Through the critical force adjusting mechanism consisting of the spring and the push plate, the magnitude of the critical force can be changed, and the reliable practical characteristic of the overload critical force adjusting mechanism device under a certain threshold value can be ensured.
The protection that above-mentioned patent utilized overload protection to realize the knife rest can conveniently get rid of the trouble, uses long spring and short spring in nevertheless the structure, and all kinds of spring parts cause elasticity inefficacy easily when pressure clashes too big, and long-term use needs to be changed the spring, increases artifical labour cost and part cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses it does not have self-protection structure to solve current knife rest main shaft, and the main shaft does not have buffer function when taking place to crash at the numerical control lathe, leads to the lathe to damage easily or condemned problem, provides a take self-protection device's knife rest for this.
The utility model provides a technical scheme that its technical problem adopted is:
a knife rest with a self-protection device comprises a power input mechanism, a main shaft transmission gear and a knife rest main shaft, wherein the power input mechanism is matched with the main shaft transmission gear to be installed to drive the main shaft transmission gear to rotate, the main shaft transmission gear is installed on the outer side of the middle section of the knife rest main shaft to drive the knife rest main shaft to rotate, a knife rest self-protection mechanism is installed on the right half part between the knife rest main shaft and the main shaft transmission gear, the knife rest self-protection mechanism comprises an inner taper sleeve, an outer taper sleeve and a locking screw, the inner taper sleeve is sleeved on the outer side of the knife rest main shaft, the left half part of the excircle of the inner taper sleeve is of a conical surface structure, the small end faces the left side, the large end is connected with the right half round platform of the excircle of the inner taper sleeve, the outer, the locking screw penetrates through the right circular truncated cone of the inner taper sleeve and is fixed at the right end of the outer taper sleeve in a threaded manner; and the left end of the tool rest main shaft is connected with a cutter head.
Preferably, an inner ring reset port is axially formed in one side of the inner taper sleeve, and the side surface of the inner taper sleeve is C-shaped.
Preferably, an outer ring reset port is axially formed in one side of the outer taper sleeve, and the side surface of the outer taper sleeve is C-shaped.
Preferably, the power input mechanism comprises a power motor and an output transmission gear, the power motor is mounted on the chassis, the output transmission gear is mounted on a driving shaft of the power motor, and the output transmission gear and the main shaft transmission gear are in meshing transmission.
Preferably, the output transmission gear further comprises a cam pair, the cam pair is mounted on a driving shaft of the power motor, and the cam pair is matched with the output transmission gear.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses directly install knife rest self-protection mechanism on traditional knife rest main shaft, in case the numerical control lathe takes place to crash in the course of working, will produce huge torque in the twinkling of an eye between knife rest main shaft and the main shaft drive gear, knife rest self-protection mechanism can play a role, when huge torque is greater than the torque upper limit that knife rest self-protection mechanism can bear, the connection of knife rest self-protection mechanism and knife rest main shaft can become invalid promptly, thereby avoided knife rest inner part to take place strong collision, play the guard action to numerical control machine and knife rest inner part, reduce the loss cost of equipment; after the phenomenon of collision happens, the next protection can be carried out on the tool rest by loosening the locking screw, readjusting the position of the tool rest, enabling the tool rest to be restored, readjusting the position between the main shaft of the tool rest and the main shaft transmission gear, and locking the self-protection mechanism of the tool rest, so that the maintenance is not needed, and the maintenance cost is saved. The principle of the self-protection mechanism of the tool rest when in use is as follows: the outer taper sleeve excircle contacts with main shaft drive gear wheel hub, outer taper sleeve hole contacts with interior taper sleeve excircle, interior taper sleeve hole contacts with knife rest main shaft excircle, form three contact surface, when the assembly, screw up locking screw, outer taper sleeve and interior taper sleeve pressurized deformation simultaneously, make three contact surface all atress compress tightly, bear certain pretension torque, when the knife rest normally tool changing, the maximum torque of transmission can not be greater than pretension torque, when colliding the emergence, the knife rest can produce huge torque in the twinkling of an eye, huge torque is greater than when pretension torque, knife rest self-protection mechanism will play a role, the connection of three contact surface is lost efficacy, main shaft drive gear and knife rest main shaft take place relative displacement, knife rest internals just can not take place violent collision, thereby play the effect of self-protection.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a partial enlarged view of an embodiment of the present invention;
fig. 3 is a schematic structural view of a tool holder self-protection mechanism according to an embodiment of the present invention;
the embodiment of the utility model provides a mainly contain following element symbol:
the automatic tool setting device comprises a power input mechanism-1, a power motor-101, an output transmission gear-102, a cam pair-103, a main shaft transmission gear-2, a tool rest main shaft-3, a tool rest self-protection mechanism-4, an inner taper sleeve-401, an inner ring reset port-402, an outer taper sleeve-410, an outer ring reset port-411, a locking screw-420, a tool pan-5 and a machine box-6.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a tool rest with a self-protection device comprises a power input mechanism 1, a main shaft transmission gear 2 and a tool rest main shaft 3, wherein the power input mechanism 1 is matched with the main shaft transmission gear 2 to be installed to drive the main shaft transmission gear 2 to rotate, the main shaft transmission gear 2 is installed at the outer side of the middle section of the tool rest main shaft 3 to drive the tool rest main shaft 3 to rotate, the tool rest self-protection mechanism 4 is installed at the right half part between the tool rest main shaft 3 and the main shaft transmission gear 2, the tool rest self-protection mechanism 4 comprises an inner taper sleeve 401, an outer taper sleeve 410 and a locking screw 420, the inner taper sleeve 401 is sleeved at the outer side of the tool rest main shaft 3, the left half part of the outer circle of the inner taper sleeve 401 is of a conical surface structure, the small end faces to the left, the large end is connected with the right half, the inner wall of the outer taper sleeve 410 is sleeved on the left conical surface of the inner taper sleeve 401 in a matched manner through a conical surface, and the locking screw 420 penetrates through the right circular truncated cone thread of the inner taper sleeve 401 and is fixed at the right end of the outer taper sleeve 410; and the left end of the tool rest main shaft 3 is connected with a tool pan 5.
An inner ring reset port 402 is axially formed in one side of the inner taper sleeve 401, and the side surface of the inner taper sleeve 401 is C-shaped; an outer ring reset port 411 is axially formed in one side of the outer taper sleeve 410, and the side surface of the outer taper sleeve 410 is C-shaped; the inner ring reset port 402 and the outer ring reset port 411 facilitate adjustment and reset of the tool rest self-protection mechanism 4 after the locking screw 420 is loosened.
The utility model discloses direct installation knife rest self-protection mechanism 4 on traditional knife rest main shaft 3, in case the numerical control lathe takes place to crash in the course of working, will produce huge torque in the twinkling of an eye between knife rest main shaft 3 and main shaft drive gear 2, knife rest self-protection mechanism 4 can play a role, when huge torque is greater than the torque upper limit that knife rest self-protection mechanism 4 can bear, the connection of knife rest self-protection mechanism 4 and knife rest main shaft 3 can become invalid promptly, thereby avoided knife rest internal part to take place strong collision, play the guard action to numerical control machine and knife rest internal part, reduce the loss cost of equipment; after the phenomenon of collision happens, the next time of protection can be carried out on the tool rest by only loosening the locking screw 420, readjusting the position of the tool rest 5 to enable the tool rest 5 to return, readjusting the position between the tool rest main shaft 3 and the main shaft transmission gear 2 and locking the tool rest self-protection mechanism 4 without maintenance, so that the maintenance cost is saved.
The power input mechanism 1 comprises a power motor 101 and an output transmission gear 102, wherein the power motor 101 is installed on the case 6, the output transmission gear 102 is installed on a driving shaft of the power motor 101, and the output transmission gear 102 is in meshing transmission with the main shaft transmission gear 2.
The output transmission gear 102 further comprises a cam pair 103, the cam pair 103 is installed on a driving shaft of the power motor 101, and the cam pair 103 is matched with the output transmission gear 102.
The principle of the tool rest self-protection mechanism 4 in use is as follows: the excircle of the outer taper sleeve 410 is contacted with the hub of the main shaft transmission gear 2, the inner hole of the outer taper sleeve 410 is contacted with the excircle of the inner taper sleeve 401, the inner hole of the inner taper sleeve 401 is contacted with the excircle of the main shaft of the tool rest 3 to form three contact surfaces, when the tool rest is assembled, the locking screw 420 is screwed down, the outer taper sleeve 410 and the inner taper sleeve 401 are simultaneously pressed and deformed to ensure that the three contact surfaces are stressed and compressed, and a certain pre-tightening torque is borne, when the tool rest normally changes tools, the maximum torque transmitted cannot be greater than the pre-tightening torque, when a crash occurs, the tool rest can instantly generate a huge torque, when the huge torque is greater than the pre-tightening torque, the self-protection mechanism 4 of the tool rest can play a role, the connection of the three contact surfaces fails, the main shaft transmission gear 2 and the main shaft of the.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a take self-protection device's knife rest, includes power input mechanism (1), main shaft drive gear (2) and knife rest main shaft (3), power input mechanism (1) cooperation main shaft drive gear (2) installation drives main shaft drive gear (2) and rotates, main shaft drive gear (2) are installed and are driven knife rest main shaft (3) rotation, its characterized in that in knife rest main shaft (3) interlude outside: the tool rest self-protection mechanism (4) is installed on the right half part between the tool rest main shaft (3) and the main shaft transmission gear (2), the tool rest self-protection mechanism (4) comprises an inner taper sleeve (401), an outer taper sleeve (410) and a locking screw (420), the inner taper sleeve (401) is sleeved on the outer side of the tool rest main shaft (3), the left half part of the excircle of the inner taper sleeve (401) is of a conical surface structure, the small end of the excircle of the inner taper sleeve faces left, the large end of the excircle of the inner taper sleeve (401) is connected with the right half circular table of the excircle of the inner taper sleeve (401), the outer taper sleeve (410) is embedded and installed on an inner hole hub of the main shaft transmission gear (2), the inner wall of the outer taper sleeve (410) is of a conical surface structure, the inner wall of the outer taper sleeve (410) is sleeved on the left conical surface of the; the left end of the tool rest main shaft (3) is connected with a cutter head (5).
2. The toolholder according to claim 1, wherein: an inner ring reset port (402) is axially formed in one side of the inner taper sleeve (401), and the side surface of the inner taper sleeve (401) is C-shaped.
3. The tool holder of claim 2, wherein: an outer ring reset port (411) is axially formed in one side of the outer taper sleeve (410), and the side surface of the outer taper sleeve (410) is C-shaped.
4. The toolholder according to claim 3, wherein: the power input mechanism (1) comprises a power motor (101) and an output transmission gear (102), the power motor (101) is installed on the case (6), the output transmission gear (102) is installed on a driving shaft of the power motor (101), and the output transmission gear (102) and the main shaft transmission gear (2) are in meshing transmission.
5. The toolholder according to claim 4, wherein: the output transmission gear (102) further comprises a cam pair (103), the cam pair (103) is installed on a driving shaft of the power motor (101), and the cam pair (103) is matched with the output transmission gear (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021011030.XU CN212398147U (en) | 2020-06-05 | 2020-06-05 | Knife rest with self-protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021011030.XU CN212398147U (en) | 2020-06-05 | 2020-06-05 | Knife rest with self-protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212398147U true CN212398147U (en) | 2021-01-26 |
Family
ID=74408858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021011030.XU Active CN212398147U (en) | 2020-06-05 | 2020-06-05 | Knife rest with self-protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212398147U (en) |
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2020
- 2020-06-05 CN CN202021011030.XU patent/CN212398147U/en active Active
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