CN219966464U - Elastic tailstock telescopic sleeve - Google Patents
Elastic tailstock telescopic sleeve Download PDFInfo
- Publication number
- CN219966464U CN219966464U CN202321227198.8U CN202321227198U CN219966464U CN 219966464 U CN219966464 U CN 219966464U CN 202321227198 U CN202321227198 U CN 202321227198U CN 219966464 U CN219966464 U CN 219966464U
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- Prior art keywords
- sleeve
- tailstock
- spring
- center
- piston
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- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 210000004907 gland Anatomy 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a flexible tailstock telescopic sleeve, which comprises a tailstock main body, a tailstock guide sleeve, a center and a hydraulic pushing device, wherein the tailstock guide sleeve is fixed on the tailstock main body, the center sleeve is arranged at the front part of the tailstock guide sleeve, the hydraulic pushing device is arranged at the tail part of the tailstock guide sleeve, the center is arranged at the front end of the center sleeve, an elastic jacking mechanism is arranged on the center sleeve and comprises a spring, a sleeve joint and a spring gland, the spring gland is fixed on the end face of a compression cavity of the center sleeve, the spring and the sleeve joint are correspondingly arranged in the compression cavity, the sleeve joint extends out of the spring gland and is connected with the hydraulic pushing device, and the thrust of the center can be controlled by controlling the stroke of the spring. After the structure is adopted, the structure has the advantages of reasonable structural design, balanced workpiece stress, easy control of jacking force, small tip abrasion, high processing precision, good stability and the like.
Description
Technical Field
The utility model relates to the technical field of numerical control horizontal gear hobbing machines, in particular to an elastic tailstock telescopic sleeve with easily controllable jacking force.
Background
The numerical control horizontal gear hobbing machine adopts the principle of generating method, and the shortest transmission chain is used for high-speed and high-precision processing through the function of an electronic gear box of a numerical control system, so that the processing of cylindrical spur gears, helical gears, drum gears, worm gears and spline tooth shapes can be completed. The machine tool is widely applied to mass processing of various small-modulus gears in the industries of electric tools, automobiles, motorcycles, instruments, mini-reduction boxes, toys, fishing gear and the like.
The workpiece tailstock is an important component of the numerical control horizontal gear hobbing machine, is coaxially arranged on the lathe body with the workpiece shaft, supports the workpiece together with the workpiece shaft to bear large cutting force during processing, and the structure of the workpiece tailstock directly influences the processing precision and stability of the machine tool. Because the lengths of the processed parts are different, different positions of the workpiece tailstock are required to be adjusted to adapt to the length change of the workpiece. The workpiece tailstock of the prior numerical control gear hobbing machine generally adopts a structure that a tailstock assembly moves on a tailstock guide rail, and the structure has the defects of complex structure, high manufacturing cost, unstable coaxiality between the moved tailstock assembly and a workpiece spindle, poor rigidity of the tailstock, wear resistance of the guide rail and the like. The structure of the telescopic sleeve also directly influences the machining precision and stability of a machine tool, the telescopic sleeve of the traditional numerical control gear hobbing machine is directly pushed by a hydraulic cylinder or an air cylinder, so that a center abuts against a central hole of a workpiece or a mandrel, the structure has the defect that the propping thrust is difficult to control, when the thrust is too large, the workpiece is propped to deform, the central hole is scrapped after being supported, and the center is worn quickly; when the thrust is too small, the sleeve moves too slowly or is blocked, vibration lines are generated on the processing surface, and the sleeve is particularly obvious when parts with small outer diameter and poor rigidity are processed. In view of the above problems, many manufacturers and knowledgeable individuals have developed and tried to make them, but no ideal product has been developed so far.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the elastic tailstock telescopic sleeve which is reasonable in structural design, balanced in workpiece stress, easy to control the propping force, small in center abrasion, high in machining precision and good in stability.
The utility model solves the technical problems of the technical proposal adopted by the utility model, which comprises a tailstock main body, a tailstock guide sleeve, a center and a hydraulic pushing device, wherein the tailstock guide sleeve is fixed on the tailstock main body; when the hydraulic pushing device pushes the sleeve joint, pushing force acts on the spring and compresses the spring, the elastic force of the compressed spring acts on the center sleeve, and the pushing force of the center can be controlled by controlling the stroke of the spring.
According to a further scheme of the utility model, the hydraulic pushing device comprises a piston front cover, a guide sleeve rear cover, a piston and a piston rod arranged on the piston, wherein a piston cavity is arranged at the tail part of the tail seat guide sleeve, the piston front cover is arranged at the front end of the piston cavity, the guide sleeve rear cover is fixed at the rear end of the piston cavity, the piston is arranged in the piston cavity, one end of the piston rod is fixedly connected to the sleeve joint, and the other end of the piston rod extends out of the guide sleeve rear cover.
According to a further scheme of the utility model, the tailstock main body is provided with the clamping notch, the clamping notch is provided with the locking screw, the tailstock guide sleeve can be moved left and right by loosening the locking screw, and the tailstock guide sleeve can be fixed by tightening the locking screw.
According to a further scheme of the utility model, a guide groove is formed in the center sleeve, and a sleeve guide pin which is in sliding fit with the guide groove is fixed on the tailstock guide sleeve.
After adopting above-mentioned structure, compare with prior art has following advantage and effect: because the tailstock main body adopts a fixed structure, the tailstock guide sleeve moves to replace the tailstock assembly to move, the precision, the wear resistance and the rigidity of the tailstock guide sleeve can be ensured through heat treatment and a precise grinding process, the thrust of the oil cylinder does not directly act on the center sleeve and the center, the precision stability and the rigidity of the center sleeve and the center can be improved, the center of a workpiece is not supported, and the magnitude of the jacking force of the center can be controlled through the elasticity of a spring and can be continuously output; meanwhile, the machining performance of the machine tool is improved, the machine tool structure is simplified to a great extent, and the production cost is saved.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic diagram of the mating structure of the present utility model.
The novel high-pressure hydraulic piston comprises a tail seat main body 1, a tail seat guide sleeve 2, a center sleeve 3, a center 4, a locking screw 5, a clamping notch 6, a guide sleeve rear cover 7, a piston rod 8, a compression chamber 9, a spring 10, a spring gland 11, a sleeve joint 12, a piston front cover 13, a piston chamber 14, a piston 15, a guide groove 16 and a sleeve guide pin 17.
Description of the embodiments
Fig. 1 and 2 show a specific embodiment of an elastic tailstock telescopic sleeve according to the present utility model, which comprises a tailstock main body 1, a tailstock guide sleeve 2, a center sleeve 3, a center 4 and a hydraulic pushing device, wherein the tailstock guide sleeve 2 is fixed on the tailstock main body 1, the center sleeve 3 is slidably arranged at the front part of the tailstock guide sleeve 2, the hydraulic pushing device is arranged at the tail part of the tailstock guide sleeve 2, the center 4 is arranged at the front end of the center sleeve 3, an elastic jacking mechanism is arranged on the center sleeve 3, the elastic jacking mechanism comprises a spring 10, a sleeve joint 12 and a spring gland 11, the rear end of the center sleeve 3 is provided with a compression chamber 9, the spring gland 11 is fixed on the end surface of the compression chamber 9, the spring 10 and the sleeve joint 12 are correspondingly arranged in the compression chamber 9, and the sleeve joint 12 extends out of the spring gland 11 and is connected with the hydraulic pushing device; the hydraulic pushing device comprises a piston front cover 13, a guide sleeve rear cover 7, a piston 15 and a piston rod 8 arranged on the piston 15, wherein a piston chamber 14 is arranged at the tail part of the tailstock guide sleeve 2, the piston front cover 13 is arranged at the front end of the piston chamber 14, the guide sleeve rear cover 7 is fixed at the rear end of the piston chamber 14, the piston 15 is arranged in the piston chamber 14, one end of the piston rod 8 is fixedly connected to a sleeve joint 12, and the other end of the piston rod 8 extends out of the guide sleeve rear cover 7.
When the hydraulic oil is in operation, the hydraulic oil pushes the piston 15 to drive the piston rod 8 to move, the piston rod 8 pushes the sleeve joint 12, the thrust force acts on the spring 10 and compresses the spring 10, the elasticity of the compressed spring 10 continuously acts on the center sleeve 3 and the center 4, and the thrust force of the center 4 can be controlled by controlling the stroke of the spring 10 through the piston rod 8; when the oil cylinder is reset, the elastic force of the spring 10 is converted into the thrust for pushing the piston rod 8, so that the oil cylinder is pushed to reset quickly.
In order to ensure the stability of the left-right movement adjustment and precision of the tailstock guide sleeve 2, the tailstock main body 1 is provided with a clamping notch 6, the clamping notch 6 is provided with a locking screw 5, the tailstock guide sleeve 2 can be moved left and right by loosening the locking screw 5, and the tailstock guide sleeve 2 can be fixed by tightening the locking screw 5.
In order to ensure the axial movement of the tailstock guide sleeve 2, the center sleeve 3 is provided with a guide groove 16, and the tailstock guide sleeve 2 is fixedly provided with a sleeve guide pin 17 which is in sliding fit with the guide groove 16.
The foregoing is merely one embodiment of the present utility model and is not intended to limit the utility model in any way, and simple modifications, equivalent variations or modifications can be made without departing from the technical solution of the present utility model, all falling within the scope of the utility model.
Claims (4)
1. The utility model provides a flexible tailstock telescopic sleeve, includes tailstock main part (1), tailstock guide pin bushing (2), top sleeve (3), top (4), hydraulic pushing device, and tailstock guide pin bushing (2) are fixed on tailstock main part (1), and top sleeve (3) slidable set up in the front portion of tailstock guide pin bushing (2), and hydraulic pushing device installs the afterbody at tailstock guide pin bushing (2), and top (4) are installed in the front end of top sleeve (3), characterized by: the novel hydraulic pushing device is characterized in that an elastic propping mechanism is arranged on the center sleeve (3) and comprises a spring (10), a sleeve joint (12) and a spring pressing cover (11), a compression chamber (9) is arranged at the rear end of the center sleeve (3), the spring pressing cover (11) is fixed on the end face of the compression chamber (9), the spring (10) and the sleeve joint (12) are correspondingly arranged in the compression chamber (9), and the sleeve joint (12) extends out of the spring pressing cover (11) and is connected with the hydraulic pushing device; when the hydraulic pushing device pushes the sleeve joint (12), pushing force acts on the spring (10) and compresses the spring (10), the elastic force of the compressed spring (10) acts on the center sleeve (3), and the pushing force of the center (4) can be controlled by controlling the stroke of the spring (10).
2. The flexible tailstock telescoping sleeve of claim 1, wherein: the hydraulic pushing device comprises a piston front cover (13), a guide sleeve rear cover (7), a piston (15) and a piston rod (8) arranged on the piston (15), wherein a piston cavity (14) is arranged at the tail of the tailstock guide sleeve (2), the piston front cover (13) is arranged at the front end of the piston cavity (14), the guide sleeve rear cover (7) is fixed at the rear end of the piston cavity (14), the piston (15) is arranged in the piston cavity (14), one end of the piston rod (8) is fixedly connected to a sleeve joint (12), and the other end of the piston rod extends out of the guide sleeve rear cover (7).
3. The flexible tailstock telescoping sleeve of claim 1 or 2, wherein: the tail seat is characterized in that a clamping notch (6) is formed in the tail seat main body (1), a locking screw (5) is arranged on the clamping notch (6), the tail seat guide sleeve (2) can be moved left and right by loosening the locking screw (5), and the tail seat guide sleeve (2) can be fixed by screwing the locking screw (5).
4. A flexible tailstock telescoping sleeve as defined in claim 3, wherein: the center sleeve (3) is provided with a guide groove (16), and a sleeve guide pin (17) which is in sliding fit with the guide groove (16) is fixed on the tailstock guide sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321227198.8U CN219966464U (en) | 2023-05-20 | 2023-05-20 | Elastic tailstock telescopic sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321227198.8U CN219966464U (en) | 2023-05-20 | 2023-05-20 | Elastic tailstock telescopic sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219966464U true CN219966464U (en) | 2023-11-07 |
Family
ID=88587867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321227198.8U Active CN219966464U (en) | 2023-05-20 | 2023-05-20 | Elastic tailstock telescopic sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219966464U (en) |
-
2023
- 2023-05-20 CN CN202321227198.8U patent/CN219966464U/en active Active
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