CN217290440U - Lathe tailstock - Google Patents
Lathe tailstock Download PDFInfo
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- CN217290440U CN217290440U CN202220648765.6U CN202220648765U CN217290440U CN 217290440 U CN217290440 U CN 217290440U CN 202220648765 U CN202220648765 U CN 202220648765U CN 217290440 U CN217290440 U CN 217290440U
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- sliding groove
- rod
- screw rod
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Abstract
The utility model relates to a lathe tailstock, which comprises a seat body, a positioning cylinder, a screw rod, a rotary table, a sliding cylinder and a locking mechanism, wherein the inner wall of the rotary table is provided with a first chute, and a transmission block is arranged in the first chute; the screw rod is a hollow rod, a second sliding groove is formed in the inner wall of one end, connected with the rotary table, of the screw rod, the first sliding groove is communicated with the second sliding groove, and the transmission block extends into the second sliding groove; a transmission rod is arranged in the screw rod, one end of the transmission rod is connected with the transmission block through a connecting piece, and the other end of the transmission rod extends into the sliding barrel and is provided with an axially extending rack; a gear is fixedly arranged on the transmission shaft between the two locking blocks, a strip-shaped hole is formed in the side wall of the sliding barrel, and the edge of the gear is meshed with the rack after passing through the strip-shaped hole. After the sliding barrel is locked, the transmission block completely enters the first sliding groove, the effect of transmitting torque is not played any more, and the screw rod cannot be damaged due to stress.
Description
Technical Field
The utility model relates to a lathe, especially a lathe tailstock.
Background
Colleges and universities are used for old-fashioned lathe's of student practice tailstock as shown in figure 1, including pedestal 1, the top of pedestal 1 sets up a location section of thick bamboo 2, and the inside of a location section of thick bamboo 2 sets up lead screw 3, and carousel 4 is connected to the one end of lead screw 3, and slide cartridge 5 is connected to the other end, and slide cartridge 5 installs in a location section of thick bamboo 2 and leads through axial direction boss for slide cartridge 5 only can axial displacement, can not rotate, and slide cartridge 5 keeps away from the inside ejector pin 6 that is provided with of one end of carousel 4. The rotary table 4 is rotated to drive the screw rod 3 to rotate, and the screw rod 3 drives the sliding cylinder 5 to axially move, so that the ejector rod 6 is driven to push the workpiece tightly or loosen the workpiece. In order to lock the sliding cylinder 5, a locking mechanism is arranged on the positioning cylinder 2, as shown in fig. 2, the locking mechanism generally comprises a rotating handle 7, the rotating handle 7 is connected with a transmission shaft 8, the transmission shaft 8 is rotatably arranged on the positioning cylinder 2, locking blocks 9 in threaded fit with the transmission shaft 8 are arranged at two ends of the transmission shaft 8, the outer wall of each locking block 9 is in sliding fit with the positioning cylinder 2 through an axial guide boss, so that the locking blocks 9 can only axially slide along the transmission shaft 8 and cannot rotate, and when the rotating handle 7 is rotated, the two locking blocks 9 can be driven to move oppositely or move reversely, so that the sliding cylinder 5 is locked or loosened.
During practice, because students are inexperienced, the operation of rotating the rotary table 4 again can occur after the sliding barrel 5 is locked by the locking mechanism, but the sliding barrel 5 cannot axially move at the moment, and the screw rod 3 can bear large acting force to be damaged, so that the precision of the equipment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lathe tailstock is provided to solve above-mentioned problem.
The utility model provides a technical scheme that its technical problem adopted is: the lathe tailstock comprises a base body, wherein a positioning cylinder is arranged at the top of the base body, a lead screw is arranged in the positioning cylinder, one end of the lead screw is connected with a turntable, the other end of the lead screw is connected with a sliding cylinder, the sliding cylinder is arranged in the positioning cylinder, a locking mechanism is arranged on the positioning cylinder, the locking mechanism comprises a rotating handle, the rotating handle is connected with a transmission shaft, and locking blocks in threaded fit with the transmission shaft are arranged at two ends of the transmission shaft;
the inner wall of the rotary table is provided with a first sliding groove extending axially, and a transmission block in sliding fit with the first sliding groove is arranged in the first sliding groove;
the screw rod is a hollow rod, a second sliding groove is formed in the inner wall of one end, connected with the rotary table, of the screw rod, the first sliding groove is communicated with the second sliding groove, and the transmission block extends into the second sliding groove;
a transmission rod in sliding fit with the screw rod is arranged in the screw rod, one end of the transmission rod is connected with the transmission block through a connecting piece, and the other end of the transmission rod extends into the sliding barrel and is provided with an axially extending rack; the gear is fixedly arranged on the transmission shaft between the two locking blocks, a strip-shaped hole is formed in the side wall of the sliding barrel, and the edge of the gear is meshed with the rack after passing through the strip-shaped hole.
Further, the connecting piece is a spring.
Furthermore, the transmission rod is sleeved with a pair of mounting sleeves in sliding fit with the transmission rod, and the mounting sleeves are mounted in the screw rod through bearings.
The beneficial effects of the utility model are that: under normal conditions, the transmission block is located the first spout, and the part is located the second spout, and when rotating the carousel, the transmission block plays the effect of transmission moment of torsion to drive the lead screw and rotate, the lead screw drives the smooth section of thick bamboo horizontal migration again. When the sliding barrel moves to a target position, the sliding barrel needs to be locked, the rotating handle needs to be rotated at the moment, the transmission shaft is driven to rotate, the transmission shaft drives the two locking blocks to move oppositely, so that the sliding barrel is clamped, meanwhile, the gear on the transmission shaft rotates synchronously along with the transmission shaft, the rack is driven to move linearly in the direction of the rotary plate, the rack drives the transmission rod to move in the direction of the rotary plate, the transmission rod drives the transmission block to enter the first sliding groove and separate from the second sliding groove, when the rotary plate is rotated again, the rotating motion of the rotary plate cannot be transmitted to the screw rod through the transmission block, and therefore the damage caused by the stress of the screw rod can be avoided.
Drawings
FIG. 1 is a schematic front view of the prior art;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic front view of the present invention;
FIG. 4 is a schematic cross-sectional view of B-B of FIG. 3;
FIG. 5 is an enlarged schematic view of section C of FIG. 3;
FIG. 6 is a schematic view of the installation of the drive rod;
FIG. 7 is a schematic view of the slide cylinder 5 with a strip-shaped hole;
fig. 8 is a schematic view of the connection of the connecting member to the drive shaft.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 3, fig. 4 and fig. 5, the utility model discloses a lathe tailstock, including pedestal 1, the top of pedestal 1 sets up a location section of thick bamboo 2, and the inside of a location section of thick bamboo 2 sets up lead screw 3, and lead screw 3 is connected with slide cartridge 5, and slide cartridge 5 is installed in a location section of thick bamboo 2, be provided with locking mechanism on the location section of thick bamboo 2, locking mechanism is including rotating handle 7, and rotation handle 7 is connected with transmission shaft 8, the both ends of transmission shaft 8 be provided with 8 screw-thread fit's of transmission shaft latch segment 9.
A gap is reserved between the screw rod 3 and the inner wall of the rotary table 4. The outer wall of the sliding barrel 5 can be provided with an axially extending guide block, the inner wall of the positioning barrel 2 is provided with an axial guide groove, and the guide block is positioned in the guide groove so as to prevent the sliding barrel 5 from rotating and only can axially slide. Similarly, the locking block 9 may also adopt a similar structure, so as to ensure that the locking block 9 can only move along the axial direction of the transmission shaft 8 and can not rotate. The thread screwing directions of the two locking blocks 9 and the transmission shaft 8 are opposite, so that the transmission shaft 8 drives the two locking blocks 9 to move oppositely or reversely.
The inner wall of the rotating disc 4 is provided with a first sliding groove 41 extending axially, and a transmission block 42 in sliding fit with the first sliding groove 41 is arranged in the first sliding groove 41. The driving block 42 is in a strip shape, and the length of the first sliding slot 41 is greater than or equal to the length of the driving block 42, so as to ensure that the driving block 42 can completely enter the first sliding slot 41.
The screw rod 3 is a hollow rod, the inner wall of one end, close to the rotary table 4, of the screw rod 3 is provided with a second sliding groove 31, the first sliding groove 41 is communicated with the second sliding groove 31, the transmission block 42 extends into the second sliding groove 31, and the transmission block 42 can slide in the second sliding groove 31. The screw rod 3 and the rotary table 4 have a gap, and the motion is transmitted only by the transmission block 42. When the transmission block 42 is partially located in the first chute 41 and partially located in the second chute 31, the rotating disc 4 is rotated, the rotating motion of the rotating disc 4 can be transmitted to the screw rod 3 through the transmission block 42, so that the screw rod 3 is driven to rotate, when the transmission block 42 exits the second chute 31 and is completely located in the first chute 41, the rotating motion of the rotating disc 4 can not be transmitted to the screw rod 3, and the screw rod 3 can not rotate.
In order to realize the function, as shown in fig. 6, a pair of mounting sleeves 35 in sliding fit with the transmission rod 32 is sleeved outside the transmission rod 32, and the mounting sleeves 35 are mounted in the screw mandrel 3 through bearings 36. When the screw rod 3 rotates, the outer ring of the bearing 36 rotates along with the screw rod 3, the mounting sleeve 35 cannot rotate, meanwhile, the inner ring of the bearing 36 axially positions the mounting sleeve 35, the mounting sleeve 35 is prevented from axially moving, and the mounting sleeve 35 cannot influence the axial movement of the transmission rod 32.
When rotating carousel 4, driving block 42 and connecting piece 34 also can rotate, but transmission shaft 8 only can axial displacement, can not rotate, consequently, the section of transmission shaft 8 is the rectangle to set up the screw thread post on its one end section towards carousel 4, the cover establish with screw thread post clearance fit's adapter sleeve on the screw thread post, connecting piece 34 and adapter sleeve outer wall fixed connection, and set up on the screw thread post and carry out the nut that axial is spacing to the adapter sleeve, as shown in fig. 8.
One end of the transmission rod 32 is connected with the transmission block 42 through the connecting piece 34 and is used for driving the transmission block 42 to axially slide, the other end of the transmission rod extends into the sliding barrel 5 and is provided with an axially extending rack 33, and the rack 33 is fixedly arranged on the outer wall of the transmission rod 32. A gear 81 is fixedly arranged on the transmission shaft 8 between the two locking blocks 9, a strip-shaped hole is formed in the side wall of the sliding barrel 5, and the edge of the gear 81 is meshed with the rack 33 after passing through the strip-shaped hole. The strip-shaped hole has a sufficient length, as shown in fig. 7, in the axial direction of the spool 5, so that when the spool 5 moves axially, interference with the gear 81 does not occur.
The utility model discloses a theory of operation does: when the sliding cylinder 5 is not locked by the locking mechanism, the transmission block 42 is partially located in the first sliding groove 41, and when the transmission block is partially located in the second sliding groove 31, the rotating disc 4 is rotated, the rotating motion of the rotating disc 4 can be transmitted to the screw rod 3 through the transmission block 42, so that the screw rod 3 is driven to rotate, and the screw rod 3 drives the sliding cylinder 5 to axially move. When the sliding barrel 5 moves to the target position, the sliding barrel 5 needs to be locked, the rotating handle 7 can be rotated at the moment to drive the transmission shaft 8 to rotate, the transmission shaft 8 drives the two locking blocks 9 to move oppositely to clamp the sliding barrel 5, meanwhile, the gear 81 on the transmission shaft 8 rotates synchronously with the transmission shaft 8 to drive the rack 33 to move linearly towards the direction of the turntable 4, the rack 33 drives the transmission rod 32 to move towards the direction of the turntable 4, the transmission rod 32 drives the transmission block 42 to enter the first chute 41, and the transmission block 42 is completely separated from the second chute 31. Namely, the movement transmission between the screw rod 3 and the rotary table 4 is released while locking, and when the rotary table 4 is rotated again, the rotation movement of the rotary table 4 can not be transmitted to the screw rod 3 through the transmission block 42, so that the screw rod 3 can be prevented from being damaged due to stress.
The connecting member 34 may be a rigid member, such as a metal rod, and preferably, the connecting member 34 is a spring, which can not only be compressed and elongated along its length, but also be bent and deformed, and can be automatically restored. When the rotating disc 4 is rotated again after the sliding cylinder 5 is locked, the first sliding groove 41 and the second sliding groove 31 are staggered, so that when the sliding cylinder 5 is loosened, the transmission shaft 8 moves towards the direction far away from the rotating disc 4, the transmission block 42 cannot enter the second sliding groove 31 immediately, the spring can be bent and deformed to generate pulling force on the transmission block 42, the rotating disc 4 can be rotated slowly at the moment, the rotation is 360 degrees at most, the first sliding groove 41 can be aligned with the second sliding groove 31, and the transmission block 42 enters the second sliding groove 31 under the action of the spring. When the connecting member 34 is a rigid member, a spring may be disposed at one end of the driving block 42 close to the rotating disc 4, and when the sliding drum 5 is locked, the spring is compressed, and when the sliding drum 5 is released, the rotating disc 4 is slowly rotated, so that the driving block 42 can enter the second sliding slot 31 again under the action of the spring.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The lathe tailstock comprises a base body (1), wherein a positioning cylinder (2) is arranged at the top of the base body (1), a lead screw (3) is arranged in the positioning cylinder (2), one end of the lead screw (3) is connected with a turntable (4), the other end of the lead screw is connected with a sliding cylinder (5), the sliding cylinder (5) is installed in the positioning cylinder (2), a locking mechanism is arranged on the positioning cylinder (2), the locking mechanism comprises a rotating handle (7), the rotating handle (7) is connected with a transmission shaft (8), and locking blocks (9) in threaded fit with the transmission shaft (8) are arranged at two ends of the transmission shaft (8);
the method is characterized in that: the inner wall of the rotary table (4) is provided with a first sliding groove (41) which extends axially, and a transmission block (42) which is in sliding fit with the first sliding groove (41) is arranged in the first sliding groove (41);
the screw rod (3) is a hollow rod, a second sliding groove (31) is formed in the inner wall of one end, close to the rotary table (4), of the screw rod (3), the first sliding groove (41) is communicated with the second sliding groove (31), and the transmission block (42) extends into the second sliding groove (31);
a transmission rod (32) in sliding fit with the screw rod (3) is arranged in the screw rod (3), one end of the transmission rod (32) is connected with a transmission block (42) through a connecting piece (34), and the other end of the transmission rod extends into the sliding barrel (5) and is provided with an axially extending rack (33); the gear (81) is fixedly arranged on the transmission shaft (8) between the two locking blocks (9), the side wall of the sliding barrel (5) is provided with a strip-shaped hole, and the edge of the gear (81) is meshed with the rack (33) after passing through the strip-shaped hole.
2. The lathe tailstock according to claim 1, wherein: the connecting piece (34) is a spring.
3. The lathe tailstock according to claim 2, wherein: the transmission rod (32) is externally sleeved with a pair of mounting sleeves (35) in sliding fit with the transmission rod (32), and the mounting sleeves (35) are mounted in the screw rod (3) through bearings (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220648765.6U CN217290440U (en) | 2022-03-22 | 2022-03-22 | Lathe tailstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220648765.6U CN217290440U (en) | 2022-03-22 | 2022-03-22 | Lathe tailstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217290440U true CN217290440U (en) | 2022-08-26 |
Family
ID=82935581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220648765.6U Active CN217290440U (en) | 2022-03-22 | 2022-03-22 | Lathe tailstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217290440U (en) |
-
2022
- 2022-03-22 CN CN202220648765.6U patent/CN217290440U/en active Active
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| GR01 | Patent grant |