CN213827055U - Pneumatic self-sustaining type follow rest subassembly of declination formula - Google Patents
Pneumatic self-sustaining type follow rest subassembly of declination formula Download PDFInfo
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- CN213827055U CN213827055U CN202022673132.4U CN202022673132U CN213827055U CN 213827055 U CN213827055 U CN 213827055U CN 202022673132 U CN202022673132 U CN 202022673132U CN 213827055 U CN213827055 U CN 213827055U
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Abstract
The utility model relates to a pneumatic self-sustaining type follower rest subassembly of declination formula belongs to horizontal lathe processing field, and it includes tool rest seat, supporting jaw, pneumatic portion and snap ring, including first mounting groove, second mounting groove and third mounting groove on the tool rest seat, the supporting jaw is provided with threely, fixes respectively in the mounting groove, the angle that is between first mounting groove and the second mounting groove is 90 degrees, the angle that is between second mounting groove and the third mounting groove is greater than 90 degrees, and the second mounting groove sets up between first mounting groove and third mounting groove; the outer side end of the supporting claw is connected with a pneumatic part through a clamping ring. The utility model discloses can enlarge equipment processing ability, can improve part production efficiency, can improve the holistic operating stability of equipment, reduce the uncertain factor of the people that the part adds man-hour.
Description
Technical Field
The utility model relates to a pneumatic self-sustaining type follower rest subassembly of declination formula belongs to horizontal lathe processing field.
Background
The follower rest is an auxiliary device for radially supporting a rotating workpiece. The lathe follow rest is fixed on the saddle, and moves along the axial direction of the workpiece together with the cutter during processing. The follow rest can move along with the tool rest body in the same direction, so that forward and reverse turning is met, and the lathe is most beneficial to turning of a slender shaft. The processing method is mainly applied to processing of a core part pump shaft of the horizontal multistage centrifugal pump. The part not only needs to receive the torque of a motive power and transfer the torque to a multi-stage impeller and convert mechanical energy into potential energy which is transmitted to a medium by the impeller, but also needs to meet the high-precision installation requirement, the installation form of simply supported beams of bearings at two ends, the impeller gap, the liquid guide ring gap, the balance disc gap and the like. The slender pump shaft is required to have good rigidity, small deflection, high processing precision, small surface roughness and strict form and position tolerance requirements so as to meet the requirement of long-term high-speed stable operation of equipment in a high-temperature medium (at 105 ℃ and above) environment.
The existing follower rest comprises the following disadvantages:
1. the common follower rest is provided with two supporting claws which are closely connected with the back of the turning tool to play a role of auxiliary supporting. The two-point support is insufficient, the stability is poor, the precision of parts is not easy to ensure, and the requirement on the operation experience of workers is high.
2. The supporting claws are arranged at a positive angle, and only the low-speed and low-resistance machining requirement is met.
3. Manually adjusting the supporting point to contact with the supporting surface of the workpiece and to adjust the tightness. The method can not be quantified by the experience of workers, and the technical experience is not easy to be passed.
4. The rotating speed of the workpiece is not too high due to the metal supporting claws, and the supporting claws need to be filled with engine oil for lubrication.
5. The supporting claw head is contacted with the cambered surface of the workpiece, the friction area is large, and the heat productivity is large.
6. The common follower rest can not completely replace the function of the center rest.
7. The positive feed and the negative feed change the direction of the axial cutting component force, so that the workpiece is converted from the compression force to the tension force.
8. In practical use, the workpiece has a downward gravity, so that the workpiece can be bent naturally, and therefore, the workpiece is separated from the support claw instantaneously due to centrifugal force during turning and is contacted with the support claw to generate vibration.
9. When the follow rest is used, attention must be paid to proper tightness of the support claw for supporting the workpiece, if the support claw is too loose, the rigidity cannot be improved, if the support claw is too tight, the shape precision of the workpiece is influenced, and the turned workpiece is in a bamboo joint shape.
10. In the turning process of the lathe, the tightness degree of the supporting claw needs to be checked frequently, and necessary adjustment is carried out.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a pneumatic self-sustaining type follower rest subassembly of declination formula, can improve the holistic operating stability of equipment, reduce the uncertain factor of people that the part adds man-hour.
According to the technical scheme of the utility model, the pneumatic self-sustaining type follower rest subassembly of declination formula, it includes tool rest seat, supporting jaw, pneumatic portion and snap ring, including first mounting groove, second mounting groove and third mounting groove on the tool rest seat, the supporting jaw is provided with threely, fixes respectively in the mounting groove, the angle that is shown between first mounting groove and the second mounting groove is 90 degrees, the angle that is shown between second mounting groove and the third mounting groove is greater than 90 degrees, the second mounting groove sets up between first mounting groove and third mounting groove; the outer side end of the supporting claw is connected with a pneumatic part through a clamping ring.
As a further improvement of the utility model, be provided with the dovetail in the third mounting groove, the support claw is connected with the third mounting groove through the dovetail.
As a further improvement of the present invention, two fastening bolts are provided on the third mounting groove.
As a further improvement of the utility model, the top end of the supporting claw is screwed with a supporting piece.
As a further improvement of the utility model, the top end of the support piece is provided with a V-shaped semi-contact groove.
As a further improvement of the present invention, the supporting wrap angle of the third mounting groove and the first mounting groove is greater than 180 °.
Compared with the prior structure, the utility model discloses there are following several advantages:
1. the processing capacity of the equipment is enlarged, the production efficiency of parts is improved, and the work efficiency is improved.
2. The adverse factor that the lathe tool feeds the part atress and warp is changed, converts it into the component force that improves part and follow tool rest laminating degree to improve follow tool rest's result of use.
3. Automatic upgrade, move to the wisdom factory, the indispensable route of robot factory. The influence of human factors on the product quality is avoided. The automatic data collection is convenient, and a good foundation is laid for the data acquisition and data management of the product upgrading equipment upgrading.
4. The application of new materials improves the performance of the follow rest. The application of the supporting claw material under other special working conditions greatly expands the application range of the equipment. The complementation of material abrasion and pneumatic compensation realizes the full exertion of material performance.
5. No need of filling engine oil for lubrication, and reduced pollution of the oil to the environment. The lubricating medium and the turning tool share the emulsion, so that the collection and management are convenient, and the environment is clean.
6. The equipment has great function expansibility, and can avoid the repeated investment of similar equipment.
7. The forward and backward moving cutters are used for processing parts to meet the design requirements, such as processing forward and backward threads. The structure consistency can be effectively improved, and the tolerance is met within a small precision range, so that the design requirement of parts is met.
8. The automatic real-time compensation characteristic meets the processing requirements under special conditions of large hardness deviation of materials, variable speed processing, large feed impact and the like.
9. The processing precision can be improved, and the scrapping of parts caused by poor processing is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of the support member.
Fig. 3 is a schematic view of the air pressure of the pneumatic section.
Description of reference numerals: 1-tool rest seat, 2-pneumatic part, 3-snap ring, 4-support claw, 5-support piece, 6-first mounting groove, 7-second mounting groove, 8-third mounting groove, 9-fastening bolt and 10-V type semi-contact groove.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model includes a tool rest base 1, a support claw 4, a pneumatic part 2 and a snap ring 3, the tool rest base 1 includes a first mounting groove 6, a second mounting groove 7 and a third mounting groove 8, the support claw 4 is provided with three parts respectively fixed in the three mounting grooves, an angle formed between the first mounting groove 6 and the second mounting groove 7 is 90 degrees, an angle formed between the second mounting groove 7 and the third mounting groove 8 is greater than 90 degrees, the second mounting groove 7 is arranged between the first mounting groove 6 and the third mounting groove 8; the outer side end of the supporting claw 4 is connected with a pneumatic part 2 through a clamping ring 3.
The pneumatic part comprises an air source, a pressure control valve, a push-pull type air source switch and the like, and the pneumatic schematic diagram is shown in figure 3.
A dovetail groove is formed in the third mounting groove 8, and the supporting claw 4 is connected with the third mounting groove 8 through the dovetail groove; two fastening bolts 9 are arranged on the third mounting groove 8.
The top end of the supporting claw 4 is screwed with a supporting piece 5, and the top end of the supporting piece 5 is provided with a V-shaped half-contact groove 10.
The support claws are heavy three support claws, so that the support stability is improved, the support load is greatly improved, and the requirements of heavy part processing and larger feed amount are met.
The third mounting groove has a support wrap angle greater than 180 ° with the first mounting groove and is not disposed at a positive angle. The support and the stability are enhanced in a component force mode, and reasonable deflection angle component force is calculated through engineering and corrected through actual application. The cutting resistance of the turning tool to the workpiece enables the workpiece to be tightly attached to the support of the follow rest.
The utility model discloses utilize the compressed air system in the mill, reform transform mechanical structure into the automatic pneumatic follower rest system of modernization. Through a series of equipment such as an automatic pressure regulating valve, a self-adaptive air cylinder, an air path distribution and holding device and the like, the supporting force is proper in tightness, and the device is suitable for different working conditions. The manual operation is completely upgraded to a full automatic adjustment system.
The utility model discloses a polymer special nylon material supporter 5 to support removable structure. The material has good self-lubricating property, small friction coefficient and small heat generation, and is suitable for high-speed operation.
The utility model discloses well V type semi-contact groove 10 can improve the supporting precision of single supporting claw, leaves heat dissipation and lubricated space angle groove, can reduce the machined part temperature with storage part emulsion man-hour.
The utility model discloses exert the biggest performance of using of tool rest seat 1 if supporting other auxiliary fixtures. When the groove of the supporting center frame is difficult to turn or some slender shafts of which the middle sections do not need to be processed are turned, the supporting claws 4 can be contacted with the outer surface of the transition sleeve by using the transition sleeve, four screws are respectively arranged at two ends of the transition sleeve, the blank surface is clamped by using the screws, and the axis of the excircle of the sleeve is adjusted to be coincident with the rotation axis of the main shaft.
Due to the special supporting distribution of the tool rest base 1, the workpieces are stressed similarly in the forward feeding and backward feeding processes, and the processing characteristics of parts are prevented from being influenced by different stresses.
The utility model discloses middle pneumatic pressure compensation, real-time and not having the hysteresis, even support claw 4 atress is inhomogeneous, perhaps has sudden change external force, also can guarantee that the work piece is upper and lower, preceding, the back can not remove, and the turning is stable, is difficult for producing the vibration.
The utility model can eliminate the vibration and lead the cutting to be stable, especially in the working procedures of turning the excircle of the lead screw and roughly turning the thread, because the cutting force is large, the follow rest of the technology is needed to be adopted for auxiliary cutting, and the tailstock is matched with a telescopic live center; when the structure of the utility model is adopted to turn the slender shaft with the following tool rest, the processing defects of bamboo joint shape, twist shape, multi-prism shape and the like caused by the bending deformation of the workpiece are not easy to be generated; the utility model is suitable for the workpiece which is not allowed to have the connecting knife.
Claims (6)
1. The pneumatic self-holding type follow rest assembly is characterized by comprising a tool rest seat (1), a supporting claw (4), a pneumatic part (2) and a clamping ring (3), wherein the tool rest seat (1) comprises a first mounting groove (6), a second mounting groove (7) and a third mounting groove (8), the number of the supporting claws (4) is three, the three supporting claws are respectively fixed in the three mounting grooves, an angle formed between the first mounting groove (6) and the second mounting groove (7) is 90 degrees, an angle formed between the second mounting groove (7) and the third mounting groove (8) is larger than 90 degrees, and the second mounting groove (7) is arranged between the first mounting groove (6) and the third mounting groove (8); the outer side end of the supporting claw (4) is connected with a pneumatic part (2) through a clamping ring (3).
2. An angled pneumatic self-retaining follower rest assembly as claimed in claim 1, wherein the third mounting groove (8) is provided with a dovetail groove, and the support claw (4) is connected with the third mounting groove (8) via the dovetail groove.
3. An angled pneumatic self-retaining follower rest assembly as claimed in claim 2, wherein two fastening bolts (9) are provided in the third mounting groove (8).
4. An angled pneumatic self-retaining follower cage assembly as claimed in claim 1 wherein the support jaw (4) has a support member (5) screwed onto its top end.
5. An angled pneumatic self-retaining follower cage assembly as claimed in claim 4, wherein the top end of the support member (5) is provided with a V-shaped half-contact groove (10).
6. An offset angle pneumatic self-retaining follower cage assembly as claimed in claim 1 wherein the third mounting groove (8) has a support wrap angle greater than 180 ° with respect to the first mounting groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673132.4U CN213827055U (en) | 2020-11-18 | 2020-11-18 | Pneumatic self-sustaining type follow rest subassembly of declination formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673132.4U CN213827055U (en) | 2020-11-18 | 2020-11-18 | Pneumatic self-sustaining type follow rest subassembly of declination formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213827055U true CN213827055U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022673132.4U Active CN213827055U (en) | 2020-11-18 | 2020-11-18 | Pneumatic self-sustaining type follow rest subassembly of declination formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213827055U (en) |
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2020
- 2020-11-18 CN CN202022673132.4U patent/CN213827055U/en active Active
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