CN114713862A - Built-in brake mechanism for lathe spindle - Google Patents
Built-in brake mechanism for lathe spindle Download PDFInfo
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- CN114713862A CN114713862A CN202210422871.7A CN202210422871A CN114713862A CN 114713862 A CN114713862 A CN 114713862A CN 202210422871 A CN202210422871 A CN 202210422871A CN 114713862 A CN114713862 A CN 114713862A
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- brake pad
- cylinder
- annular piston
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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Abstract
The invention discloses a built-in brake mechanism for a lathe spindle, wherein a first annular piston is arranged in a first cavity formed between a first oil cylinder and a third oil cylinder, a second annular piston is arranged in a second cavity formed between a second oil cylinder and a fourth oil cylinder, a first static brake pad is arranged on the rear side of the first annular piston, a second static brake pad is arranged on the front side of the second annular piston, a first spring penetrates through the first static brake pad and is clamped between the first annular piston and the second static brake pad, a second spring penetrates through the second static brake pad and is clamped between the second annular piston and the first static brake pad, an oil cylinder connecting disc seat is fixed on the outer side of a rotor, a dynamic brake pad is fixed on the oil cylinder connecting disc seat and is arranged between the first static brake pad and the second static brake pad, and hydraulic oil is simultaneously injected into the first cavity on the front side of the first annular piston and the second cavity on the rear side of the second annular piston. The invention can improve the brake clamping force, avoid bearing stress and prolong the service life of the main shaft.
Description
Technical Field
The invention relates to a lathe spindle, in particular to a built-in brake mechanism for the lathe spindle.
Background
With the upgrading of lathe technology, the application field of the medium-high-end numerical control lathe with the turning and milling functions is continuously expanded, and compared with the traditional lathe, the lathe with the turning and milling functions can realize the functions of turning, boring and the like, and can also be used for machining complex parts such as drilling, tapping, curved surfaces and the like. In the traditional clamping mode, the precision of a C shaft is unstable due to the reasons of gaps of a caliper piston, support rigidity, installation modes and the like, so that the machining precision is influenced, and in addition, a part of braking structures cause a bearing to be subjected to larger axial force in the braking process, so that the service life of the bearing and the precision of a main shaft are influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a built-in brake mechanism of a lathe spindle, which can improve the brake clamping force, avoid bearing stress, help to prolong the service life of the spindle, is convenient to maintain and has beautiful appearance, aiming at the defects of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme.
The utility model provides a built-in arrestment mechanism for lathe spindle, the spindle is including the rotor and be located the bearing frame in the rotor outside, built-in arrestment mechanism is including first hydro-cylinder, second hydro-cylinder, third hydro-cylinder and fourth hydro-cylinder, first hydro-cylinder fixed connection in the rear end of bearing frame, second hydro-cylinder fixed connection in the rear end of first hydro-cylinder, the third hydro-cylinder is fixed in the inboard of first hydro-cylinder, the fourth hydro-cylinder is fixed in the inboard of second hydro-cylinder, first hydro-cylinder with be equipped with first annular piston in the first cavity that forms between the third hydro-cylinder, the second hydro-cylinder with be equipped with second annular piston in the second cavity that forms between the fourth hydro-cylinder, the rear side of first annular piston is equipped with first static brake block, the front side of second annular piston is equipped with second static brake block, first static brake block sets up with second static brake block relatively and is equipped with a plurality of first springs and a plurality of static brake block and a plurality of springs and a plurality of static brake block between the two The second spring, first spring passes first static brake block and clamp and locate between first annular piston and the second static brake block, the second spring passes the second static brake block and clamp and locate between second annular piston with between the first static brake block, the outside of rotor is fixed with hydro-cylinder flange seat, be fixed with the dynamic brake block on the hydro-cylinder flange seat, the dynamic brake block is located between first static brake block and the second static brake block, first annular piston front side in the first cavity with the second annular piston rear side be used for injecting hydraulic oil simultaneously in the second cavity, borrow the pressure that hydraulic oil was applyed and order about first annular piston with the second annular piston is close to each other, and utilizes first static brake block with the cooperation of second static brake block is pressed from both sides tightly the dynamic brake block.
Preferably, an oil cylinder screw rod penetrates through the second oil cylinder, and the front end of the oil cylinder screw rod is screwed and fixed with the first oil cylinder.
Preferably, the distance between the first static brake pad and the dynamic brake pad is smaller than the sliding length of the first annular piston, and the distance between the second static brake pad and the dynamic brake pad is smaller than the sliding length of the second annular piston.
Preferably, a first oil inlet hole is formed in the side wall of the first oil cylinder, the first oil inlet hole is communicated with the first cavity, a second oil inlet hole is formed in the side wall of the second oil cylinder, and the second oil inlet hole is communicated with the second cavity.
Preferably, an oil guide pin is connected between the first oil cylinder and the second oil cylinder, a pin hole is formed in the oil guide pin, and the pin hole is communicated between the first oil inlet hole and the second oil inlet hole.
Preferably, first static brake block with oil round pin perforation has been seted up respectively on the second static brake block, it passes to lead the oil round pin perforation, first static brake block with be formed with first leakage hole between the first hydro-cylinder, the second static brake block with be formed with the second leakage hole between the second hydro-cylinder.
Preferably, a pin key groove is formed between the outer side wall of the rotor and the inner side wall of the oil cylinder connecting disc seat, and a pin key is arranged in the pin key groove.
Preferably, the first spring and the second spring are both rectangular springs.
Preferably, a first brake pin mounting hole is formed in the front end of the first annular piston, a first brake pin is inserted into the first brake pin mounting hole, a second brake pin mounting hole is formed in the rear end of the second annular piston, and a second brake pin is inserted into the second brake pin mounting hole.
Preferably, a brake adjusting sheet is fixed between the oil cylinder connecting disc seat and the brake pad.
In the built-in brake mechanism for the lathe spindle, oil pressure needs to be removed when the lathe spindle runs, the elastic force applied by a plurality of first springs and a plurality of second springs drives a first static brake pad and a second static brake pad to be far away from a dynamic brake pad so that the dynamic brake pad can synchronously run along with a rotor, when the lathe spindle needs to brake, hydraulic oil can be simultaneously injected into a first cavity and a second cavity, under the action of the pressure applied by the hydraulic oil, a first annular piston and a second annular piston can be driven to drive the first static brake pad and the second static brake pad to be close to each other until the first static brake pad and the second static brake pad are matched and tightly clamp the dynamic brake pad, and the rotor is braked compared with a method for braking in a caliper mode in the prior art, the invention can effectively improve the precision of the main shaft, compared with other built-in hydraulic or pneumatic braking mechanisms, the invention can greatly prolong the service life of the main shaft and ensure the precision of the main shaft, and the braking mode of the invention can also improve the braking clamping force so as to improve the braking performance of the main shaft of the lathe.
Drawings
FIG. 1 is a cross-sectional view of a lathe spindle;
FIG. 2 is a first cross-sectional view of the built-in brake mechanism;
FIG. 3 is a second cross-sectional view of the built-in brake mechanism;
FIG. 4 is an exploded view of the built-in brake mechanism;
FIG. 5 is a perspective view of the first cylinder;
FIG. 6 is a perspective view of a third cylinder and a fourth cylinder;
FIG. 7 is a perspective view of a first annular piston and a second annular piston;
FIG. 8 is a perspective view of a first and second static brake pad;
fig. 9 is a perspective view of the second cylinder.
Detailed Description
The invention is described in more detail below with reference to the figures and examples.
The invention discloses a built-in brake mechanism for a lathe spindle, which is shown in a combined figure 1-9, wherein the spindle comprises a rotor 1 and a bearing seat 2 positioned on the outer side of the rotor 1, the built-in brake mechanism comprises a first oil cylinder 3, a second oil cylinder 4, a third oil cylinder 5 and a fourth oil cylinder 6, the first oil cylinder 3 is fixedly connected with the rear end of the bearing seat 2, the second oil cylinder 4 is fixedly connected with the rear end of the first oil cylinder 3, the third oil cylinder 5 is fixedly arranged on the inner side of the first oil cylinder 3, the fourth oil cylinder 6 is fixedly arranged on the inner side of the second oil cylinder 4, a first annular piston 7 is arranged in a first cavity 30 formed between the first oil cylinder 3 and the third oil cylinder 5, a second annular piston 8 is arranged in a second cavity 40 formed between the second oil cylinder 4 and the fourth oil cylinder 6, a first static brake pad 70 is arranged on the rear side of the first annular piston 7, the front side of the second annular piston 8 is provided with a second static brake pad 80, the first static brake pad 70 and the second static brake pad 80 are oppositely arranged, a plurality of first springs 71 and a plurality of second springs 81 are arranged between the first static brake pad 70 and the second static brake pad 80, the first springs 71 penetrate the first static brake pad 70 and are clamped between the first annular piston 7 and the second static brake pad 80, the second springs 81 penetrate the second static brake pad 80 and are clamped between the second annular piston 8 and the first static brake pad 70, the outer side of the rotor 1 is fixed with an oil cylinder connecting disc seat 9, a dynamic brake pad 90 is fixed on the oil cylinder connecting disc seat 9, the dynamic brake pad 90 is arranged between the first static brake pad 70 and the second static brake pad 80, the front side of the first annular piston 7 is arranged in the first cavity 30 and the rear side of the second annular piston 8 is arranged in the second cavity 40 for simultaneously injecting hydraulic oil, the pressure exerted by the hydraulic oil drives the first annular piston 7 and the second annular piston 8 to approach each other, and the first static brake pad 70 and the second static brake pad 80 are used for cooperatively clamping the dynamic brake pad 90.
The working principle of the above structure is that, as shown in fig. 2 and fig. 3, when the lathe spindle operates, oil pressure needs to be removed, the elastic force applied by the plurality of first springs 71 and the plurality of second springs 81 drives the first static brake pad 70 and the second static brake pad 80 to be far away from the dynamic brake pad 90, so that the dynamic brake pad 90 can synchronously operate along with the rotor 1, when the lathe spindle needs to brake, hydraulic oil can be simultaneously injected into the first cavity 30 and the second cavity 40, under the action of the pressure applied by the hydraulic oil, the first annular piston 7 and the second annular piston 8 can be driven to drive the first static brake pad 70 and the second static brake pad 80 to approach each other, until the first static brake pad 70 and the second static brake pad 80 cooperate to clamp the dynamic brake pad 90, the rotor 1 is braked, compared with the braking means in the prior art adopting a caliper manner, the invention can effectively avoid bearing stress, greatly prolong the service life of the main shaft and ensure the precision of the main shaft, and the braking mode of the invention can also improve the braking clamping force, thereby improving the braking performance of the main shaft of the lathe.
In order to reliably fix the first and second cylinders, in this embodiment, a cylinder screw 41 is inserted into the second cylinder 4, and the front end of the cylinder screw 41 is screwed and fixed to the first cylinder 3.
Preferably, the distance between the first static brake pad 70 and the dynamic brake pad 90 is smaller than the sliding length of the first annular piston 7, and the distance between the second static brake pad 80 and the dynamic brake pad 90 is smaller than the sliding length of the second annular piston 8. The distance setting can ensure that the first static brake block and the second static brake block can accurately execute the braking action between the first static brake block and the dynamic brake block, and simultaneously avoid the contact and the friction between the static brake block and the dynamic brake block after the separation.
In order to facilitate the injection of hydraulic oil, in this embodiment, the side wall of the first oil cylinder 3 is provided with a first oil inlet 32, the first oil inlet 32 is communicated with the first cavity 30, the side wall of the second oil cylinder 4 is provided with a second oil inlet 42, and the second oil inlet 42 is communicated with the second cavity 40.
In this embodiment, an oil guiding pin 31 is connected between the first oil cylinder 3 and the second oil cylinder 4, a pin hole 310 is formed in the oil guiding pin 31, and the pin hole 310 is communicated between the first oil inlet hole 32 and the second oil inlet hole 42.
In the above structure, the first oil inlet hole 32 and the second oil inlet hole 42 can be communicated with each other under the action of the oil guide pin 31, during oil injection, oil can be injected synchronously through the first oil inlet hole 32 and the second oil inlet hole 42, or through one of the first oil inlet hole and the second oil inlet hole 42, and under the communication action of the pin hole 310, the oil pressure in the first cavity 30 and the oil pressure in the second cavity 40 can be ensured to be the same, so that the first annular piston and the second annular piston are driven to move synchronously.
Further, referring to fig. 8, oil guide pin through holes 33 are respectively formed in the first static brake pad 70 and the second static brake pad 80, the oil guide pin 31 passes through the oil guide pin through holes 33, a first leakage hole 74 is formed between the first static brake pad 70 and the first oil cylinder 3, and a second leakage hole 84 is formed between the second static brake pad 80 and the second oil cylinder 4.
In the above structure, the first leakage hole 74 and the second leakage hole 84 are used for discharging the hydraulic oil leaked between the first and second annular pistons in time, so as to avoid adverse effects on the performance of the brake mechanism.
Referring to fig. 2 and 3, in this embodiment, a pin key groove 91 is formed between an outer side wall of the rotor 1 and an inner side wall of the cylinder tray seat 9, and a pin key is disposed in the pin key groove 91. Under the clamping action of the pin key, the rotor 1 can be reliably connected with the oil cylinder connecting disc seat 9.
Preferably, the first spring 71 and the second spring 81 are both rectangular springs. However, this is only a preferred application of the present invention, and other types of springs can be selected according to design requirements, and any choice of spring is equivalent to the substitution made under the spirit of the present invention, and therefore, the present invention is within the protection scope.
In this embodiment, a first brake pin mounting hole 72 is formed in a front end of the first annular piston 7, a first brake pin 73 is inserted into the first brake pin mounting hole 72, a second brake pin mounting hole 82 is formed in a rear end of the second annular piston 8, and a second brake pin 83 is inserted into the second brake pin mounting hole 82. Wherein said first brake pin 73 and said second brake pin 83 mainly limit the piston in order to prevent the piston from rotating and shifting during the operation of the spindle.
In order to facilitate fine adjustment of the front and rear positions of the dynamic brake pad 90, in this embodiment, a dynamic brake adjustment sheet 92 is fixed between the oil cylinder flange seat 9 and the dynamic brake pad 90.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a built-in arrestment mechanism for lathe main shaft, the main shaft is including rotor (1) and being located bearing frame (2) in the rotor (1) outside, a serial communication port, built-in arrestment mechanism is including first hydro-cylinder (3), second hydro-cylinder (4), third hydro-cylinder (5) and fourth hydro-cylinder (6), first hydro-cylinder (3) fixed connection in the rear end of bearing frame (2), second hydro-cylinder (4) fixed connection in the rear end of first hydro-cylinder (3), third hydro-cylinder (5) are fixed in the inboard of first hydro-cylinder (3), fourth hydro-cylinder (6) are fixed in the inboard of second hydro-cylinder (4), first hydro-cylinder (3) with be equipped with first annular piston (7) in first cavity (30) that form between third hydro-cylinder (5), second hydro-cylinder (4) with be equipped with second annular piston (8) in second cavity (40) that form between fourth hydro-cylinder (6) ) The rear side of the first annular piston (7) is provided with a first static brake pad (70), the front side of the second annular piston (8) is provided with a second static brake pad (80), the first static brake pad (70) and the second static brake pad (80) are oppositely arranged, a plurality of first springs (71) and a plurality of second springs (81) are arranged between the first static brake pad (70) and the second static brake pad (80), the first springs (71) penetrate through the first static brake pad (70) and are clamped between the first annular piston (7) and the second static brake pad (80), the second springs (81) penetrate through the second static brake pad (80) and are clamped between the second annular piston (8) and the first static brake pad (70), the outer side of the rotor (1) is fixedly provided with an oil cylinder connecting disc seat (9), the oil cylinder connecting disc seat (9) is fixedly provided with a dynamic brake pad (90), and the dynamic brake pad (90) is arranged between the first static brake pad (70) and the second static brake pad (80), the front side of the first annular piston (7) is arranged in the first cavity (30) and the rear side of the second annular piston (8) is arranged in the second cavity (40) and is used for injecting hydraulic oil at the same time, the pressure exerted by the hydraulic oil drives the first annular piston (7) and the second annular piston (8) to be close to each other, and the first static brake pad (70) and the second static brake pad (80) are matched and clamped with the dynamic brake pad (90).
2. The built-in brake mechanism for a lathe spindle according to claim 1, wherein a cylinder screw (41) is inserted into the second cylinder (4), and a front end of the cylinder screw (41) is screwed and fixed to the first cylinder (3).
3. The built-in brake mechanism for a lathe spindle according to claim 1, characterized in that the spacing between the first static brake pad (70) and the dynamic brake pad (90) is smaller than the sliding length of the first annular piston (7), and the spacing between the second static brake pad (80) and the dynamic brake pad (90) is smaller than the sliding length of the second annular piston (8).
4. The built-in brake mechanism for a lathe spindle according to claim 1, wherein a first oil inlet hole (32) is formed in a side wall of the first oil cylinder (3), the first oil inlet hole (32) is communicated with the first cavity (30), a second oil inlet hole (42) is formed in a side wall of the second oil cylinder (4), and the second oil inlet hole (42) is communicated with the second cavity (40).
5. The built-in brake mechanism for the lathe spindle according to claim 4, characterized in that an oil guide pin (31) is connected between the first oil cylinder (3) and the second oil cylinder (4), a pin hole (310) is formed in the oil guide pin (31), and the pin hole (310) is communicated between the first oil inlet hole (32) and the second oil inlet hole (42).
6. The built-in brake mechanism for the lathe spindle according to claim 5, wherein the first static brake pad (70) and the second static brake pad (80) are respectively provided with an oil guide pin through hole (33), the oil guide pin (31) penetrates through the oil guide pin through hole (33), a first leakage hole (74) is formed between the first static brake pad (70) and the first oil cylinder (3), and a second leakage hole (84) is formed between the second static brake pad (80) and the second oil cylinder (4).
7. The built-in brake mechanism for a lathe spindle according to claim 1, characterized in that a pin key groove (91) is formed between the outer side wall of the rotor (1) and the inner side wall of the cylinder connecting plate seat (9), and a pin key is arranged in the pin key groove (91).
8. The built-in brake mechanism for a lathe spindle according to claim 1, wherein the first spring (71) and the second spring (81) are both rectangular springs.
9. The built-in brake mechanism for a lathe spindle according to claim 1, wherein a first brake pin mounting hole (72) is formed in a front end of the first annular piston (7), a first brake pin (73) is inserted into the first brake pin mounting hole (72), a second brake pin mounting hole (82) is formed in a rear end of the second annular piston (8), and a second brake pin (83) is inserted into the second brake pin mounting hole (82).
10. The built-in brake mechanism for a lathe spindle according to claim 1, wherein a dynamic brake adjusting sheet (92) is fixed between the cylinder connecting disc seat (9) and the dynamic brake pad (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422871.7A CN114713862A (en) | 2022-04-21 | 2022-04-21 | Built-in brake mechanism for lathe spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210422871.7A CN114713862A (en) | 2022-04-21 | 2022-04-21 | Built-in brake mechanism for lathe spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114713862A true CN114713862A (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210422871.7A Pending CN114713862A (en) | 2022-04-21 | 2022-04-21 | Built-in brake mechanism for lathe spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114713862A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040026212A (en) * | 2002-09-23 | 2004-03-30 | 대우종합기계 주식회사 | C-shaft Break System in Turning center maintaining initial position of C-shaft |
| KR101336412B1 (en) * | 2012-06-18 | 2013-12-04 | 현대위아 주식회사 | Brake device for spindel of lathe |
| CN205629976U (en) * | 2016-04-28 | 2016-10-12 | 广州市昊志机电股份有限公司 | Rotary worktable's brake mechanism |
| CN107932156A (en) * | 2017-12-28 | 2018-04-20 | 广州群创数控机床有限公司 | It is a kind of can automatic indexing and clamping work spindle |
| CN207807219U (en) * | 2017-12-28 | 2018-09-04 | 宁波永博机械制造有限公司 | A kind of lathe brake gear |
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
-
2022
- 2022-04-21 CN CN202210422871.7A patent/CN114713862A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040026212A (en) * | 2002-09-23 | 2004-03-30 | 대우종합기계 주식회사 | C-shaft Break System in Turning center maintaining initial position of C-shaft |
| KR101336412B1 (en) * | 2012-06-18 | 2013-12-04 | 현대위아 주식회사 | Brake device for spindel of lathe |
| CN205629976U (en) * | 2016-04-28 | 2016-10-12 | 广州市昊志机电股份有限公司 | Rotary worktable's brake mechanism |
| CN107932156A (en) * | 2017-12-28 | 2018-04-20 | 广州群创数控机床有限公司 | It is a kind of can automatic indexing and clamping work spindle |
| CN207807219U (en) * | 2017-12-28 | 2018-09-04 | 宁波永博机械制造有限公司 | A kind of lathe brake gear |
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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