Five-axis machining center band-type brake mechanism
By designing a new type of brake holding mechanism for rotating part body, piston, disc spring and buffer block, the existing five-axis machining center brake holding mechanism has solved the problem of long reaction time and high cost, and achieved rapid response and low-cost brake tightening effect , improves processing accuracy and safety.
Patent Information
- Application Number
- CN202420072555.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-11
AI Technical Summary
The brake holding mechanism of the existing five-axis machining center has problems such as long reaction time, high cost and outsourcing of structures, which affects the processing accuracy and safety.
A new type of brake mechanism including a rotating member body, a piston, a disc spring, a friction plate and a buffer block is designed. The tension of the disc spring and the design of the friction plate is achieved quickly, so as to ensure that the rotating member is fixed when the pressure element fails. Use buffer grooves and elastic semicircles to prevent buffer blocks from being offset.
It achieves fast response and low-cost braking effect, improves processing accuracy and overall safety, avoids buffer block offset, and significantly improves the practicality of the brake holding mechanism.
Smart Images
Figure CN222176851U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a brake mechanism for a five-axis machining center. Background Art
[0002] The existing direct-drive A / C-axis double-swing milling head positioning and braking device uses the pneumatic brake device of Heima, which is purchased as a whole. The clamping mechanism clamps through a spring device. When the internal compressed air of the spring chamber is discharged, or the external cylinder of the spring chamber is inflated and pressurized, the spring chamber is relaxed and stretched and radially presses the axial contact surface of the outer circumference of the clamping device. The entire clamping element will produce elastic deformation within the range of the clamping jaw contact surface and clamp the shaft body accordingly. Conversely, filling the spring chamber with compressed air or discharging the compressed air in the external cylinder of the spring chamber will cause the spring chamber to bend and arch, and cause the distance between the outer circumferential contact surfaces of the clamping system to shorten. The contact surface of the clamping jaw will be pulled away from the shaft body.
[0003] However, the existing technology has the disadvantages that, firstly, if the air is supplied by an air source, the reaction time may be relatively long; secondly, if a pneumatic brake is adopted, the overall structure must be purchased from outside, which is relatively costly. Therefore, it is particularly important to improve the existing brake mechanism and design a new brake mechanism for a five-axis machining center to solve the above technical defects and improve the practicability of the overall brake mechanism. Utility Model Content
[0004] The purpose of the utility model is to provide a brake mechanism for a five-axis machining center, which can ensure that the main body of the rotating part is fixed and braked when the pressure element fails, thereby ensuring safety, obvious effect, low cost, and strong practicality. The disc spring reaction is faster than traditional hydraulic brakes, and the response is fast, which can improve the processing accuracy. At the same time, it can prevent the buffer block from offsetting, which affects the use, and improves the overall safety of the duct assembly, so as to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A brake mechanism for a five-axis machining center includes a rotating part body, a fixed seat is provided on the outer side of the rotating part body, a piston is provided inside the fixed seat, and multiple groups of disc springs are provided inside the fixed seat, a screw is provided inside the disc spring and inside the fixed seat, the end of the screw away from the disc spring is connected to the piston, a friction plate is provided at the end of the fixed seat close to the piston, and the piston is connected to the fixed seat via the friction plate, an accommodating part is provided at the top of the rotating part body and on the inner side of the piston, multiple groups of buffer blocks are provided inside the accommodating part, a buffer block is provided at one end close to the accommodating part, a buffer groove is started inside the buffer, and a bearing is rotatably connected to the outer side of the rotating part body.
[0007] As a preferred solution of the utility model, a plurality of groups of thread grooves are provided inside the piston, the internal structure size of the thread grooves is designed to correspond to the external structure size of the screws, and the screws are connected to the piston via the thread grooves.
[0008] As a preferred solution of the utility model, a pressure chamber is provided inside the container, and an O-ring and two sets of sealing rings are respectively provided on the outside of the pressure chamber and inside the container.
[0009] As a preferred solution of the utility model, the internal structure size of the buffer groove is designed to correspond to the external structure size of the buffer member, and the two groups of buffer members are connected through the buffer groove.
[0010] As a preferred solution of the utility model, a plurality of groups of elastic semicircular blocks are provided inside the buffer groove, and the plurality of groups of elastic semicircular blocks are distributed at equal intervals inside the buffer groove, and the buffer groove is connected to the buffer member through the elastic semicircular blocks.
[0011] As a preferred solution of the utility model, a guide groove is provided inside the container, the guide groove is designed in an arc-shaped structure, and the internal structure size of the guide groove is designed to correspond to the external structure size of the buffer, and the container is connected to the buffer through a guide wiper.
[0012] As a preferred solution of the utility model, the accommodating member is connected to the fixing seat via a fixing member, and the friction plate is connected to the rotating member body via bolts.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. In the utility model, through the design of the piston, the friction plate and the disc spring, when the rotating body is in use, the tension generated by the disc spring tightens the piston, and the piston presses the friction plate on the fixed seat. Since the friction plate is fixed to the rotating body with bolts, the rotating body and the piston are kept relatively still by friction, that is, the brake is tightened. When the rotating body needs to rotate, the pressure generated by the fluid inside the pressure chamber overcomes the tension of the disc spring, forcing the piston to move up, so that the friction plate is separated from the fixed seat. Further, the rotating body has no friction of the piston and can rotate freely through the bearing. The disc spring is tightened and the pressure fluid is passively released. When the pressure element fails, the rotating body can be ensured to be fixed and braked, ensuring safety, obvious effect, low cost, strong practicality, and the disc spring reaction is faster than traditional hydraulic brakes, and the response is fast, which can improve the processing accuracy.
[0015] 2. In the utility model, through the design of the buffer block and the buffer component, when the buffer block contacts with the object, the buffer component is driven to displace and connect with the buffer groove. When the buffer component is connected with the buffer groove, it can contact the elastic semicircular block inside thereof to cause deformation. The deformed elastic semicircular block contacts with the inner wall of the buffer groove, so that the buffer component can be buffered, thereby preventing the buffer block from being offset and affecting its use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the main body of the rotating part of the utility model;
[0018] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure;
[0019] Figure 4 This is a schematic diagram of the structure of the buffer block of the utility model.
[0020] In the figure: 1. Rotating part body; 2. Fixed seat; 3. Piston; 4. Disc spring; 5. Screw; 6. Friction plate; 7. Fixed part; 8. Receptacle; 9. Buffer block; 10. Buffer part; 11. Buffer groove; 12. Bearing; 13. Pressure chamber; 14. O-ring; 15. Sealing ring seal. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0022] Example:
[0023] See also Figure 1-Figure 4 , the utility model provides a technical solution:
[0024] A brake mechanism for a five-axis machining center includes a rotating part body 1, a fixed seat 2 is provided on the outer side of the rotating part body 1, a piston 3 is provided inside the fixed seat 2, and multiple groups of disc springs 4 are provided inside the fixed seat 2, screws 5 are provided inside the disc spring 4 and located inside the fixed seat 2, the end of the screw 5 away from the disc spring 4 is connected to the piston 3, a friction plate 6 is provided at the end of the fixed seat 2 close to the piston 3, the piston 3 is connected to the fixed seat 2 through the friction plate 6, an accommodating part 8 is provided at the top of the rotating part body 1 and located on the inner side of the piston 3, multiple groups of buffer blocks 9 are provided inside the accommodating part 8, a buffer 10 is provided at the end of the buffer block 9 close to the accommodating part 8, a buffer groove 11 is started inside the buffer 10, and a bearing 12 is rotatably connected to the outer side of the rotating part body 1.
[0025] Furthermore, multiple groups of thread grooves are opened inside the piston 3, and the internal structure size of the thread groove is designed to correspond to the external structure size of the screw 5. The screw 5 is connected to the piston 3 through the thread groove. The thread groove is connected to the screw 5, so that the screw 5 can be connected to the piston 3, and the disc spring 4 can be connected to the piston 3.
[0026] A pressure chamber 13 is provided inside the container 8, and an O-ring 14 and two sets of sealing rings 15 are provided outside the pressure chamber 13 and inside the container 8. The O-ring 14 and the two sets of sealing rings 15 are connected to the pressure chamber 13 so that the O-ring 14 and the two sets of sealing rings 15 can seal it to prevent leakage of the liquid inside. The container 8 is connected to the fixing seat 2 through the fixing member 7, and the friction plate 6 is connected to the rotating member body 1 through bolts. When the rotating member body 1 is in use, the tension generated by the disc spring 4 tightens the piston 3, and the piston 3 presses the friction plate 6 on the fixing seat 2. Since the friction plate 6 is fixed to the rotating member body 1 with bolts, On the rotating part body 1, it is ensured that the rotating part body 1 and the piston 3 remain relatively still through friction, that is, the brake is tightened. When the rotating part body 1 needs to rotate, the pressure generated by the fluid inside the pressure chamber 13 overcomes the pulling force of the disc spring 4, forcing the piston 3 to move up, so that the friction plate 6 is separated from the fixed seat 2. Further, the rotating part body 1 has no friction force from the piston 3 and can rotate freely through the bearing 12. The disc spring 4 is braked and passively released by the pressure fluid. When the pressure element fails, it can ensure that the rotating part body 1 is fixed and braked, ensuring safety, obvious effect, low cost, and strong practicality. The disc spring 4 reacts faster than traditional hydraulic brakes, has a fast response, and can improve processing accuracy.
[0027] Secondly, the internal structure size of the buffer groove 11 is designed to correspond to the external structure size of the buffer member 10. The two groups of buffer members 10 are connected through the buffer groove 11. The buffer groove 11 is connected to the buffer member 10 so that the two groups of buffer members 10 can be connected.
[0028] Furthermore, a plurality of groups of elastic semicircular blocks are provided inside the buffer groove 11, and the plurality of groups of elastic semicircular blocks are distributed at equal intervals inside the buffer groove 11. The buffer groove 11 is connected to the buffer component 10 through the elastic semicircular blocks. When the buffer component 10 is connected to the buffer groove 11, it can contact the elastic semicircular blocks inside thereof to cause deformation. The deformed elastic semicircular blocks contact the inner wall of the buffer groove 11, so that the buffer component 10 can be buffered, thereby preventing the buffer block 9 from being offset, which would affect its use.
[0029] Furthermore, a guide groove is provided inside the container 8. The guide groove is designed as an arc-shaped structure, and the internal structure size of the guide groove is designed to correspond to the external structure size of the buffer 10. The container 8 is connected to the buffer 10 through a guide wipe, and the buffer 10 is connected to the guide groove so that the buffer 10 can be slidably connected to the container 8. When the buffer 10 is displaced, the guide groove can increase the stability of its displacement to prevent deviation.
[0030] In this embodiment, the implementation scenario is specifically as follows: when the rotating body 1 is in use, the tension generated by the disc spring 4 tightens the piston 3, and the piston 3 presses the friction plate 6 against the fixed seat 2. Since the friction plate 6 is fixed to the rotating body 1 with bolts, the rotating body 1 and the piston 3 are kept relatively still by friction, that is, the brake is tightened. When the rotating body 1 needs to rotate, the pressure generated by the fluid in the pressure chamber 13 overcomes the tension of the disc spring 4, forcing the piston 3 to move up, so that the friction plate 6 is separated from the fixed seat 2. Further, the rotating body 1 has no friction force from the piston 3 and can rotate freely through the bearing 12. The disc spring 4 is tightened and the pressure fluid is passively released. When the pressure element fails, It can ensure that the rotating part body 1 is fixed and braked to ensure safety, with obvious effects, low cost and strong practicality. The disc spring 4 reacts faster than traditional hydraulic brakes and has a fast response, which can improve the processing accuracy. When the buffer block 9 contacts the object, it drives the buffer 10 to move and connect with the buffer groove 11. When the buffer 10 is connected with the buffer groove 11, it can contact the elastic semicircular block inside it to cause it to deform. The deformed elastic semicircular block contacts the inner wall of the buffer groove 11, so that the buffer 10 can be buffered, thereby preventing the buffer block 9 from being offset, which affects the use. Compared with the existing brake mechanism, the utility model can improve the overall practicality of the brake mechanism through design.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A five-axis machining center brake mechanism, comprising a rotating part body (1), characterized in that: A fixed seat (2) is provided on the outer side of the rotating member body (1), a piston (3) is provided inside the fixed seat (2), and a plurality of disc springs (4) are provided inside the fixed seat (2), a screw (5) is provided inside the disc spring (4) and located inside the fixed seat (2), and the end of the screw (5) away from the disc spring (4) is connected to the piston (3), a friction plate (6) is provided at the end of the fixed seat (2) close to the piston (3), and the piston (3) is connected to the fixed seat (2) through the friction plate (6), a receiving member (8) is provided at the top of the rotating member body (1) and located inside the piston (3), a plurality of buffer blocks (9) are provided inside the receiving member (8), a buffer member (10) is provided at the end of the buffer block (9) close to the receiving member (8), and a buffer groove (11) is formed inside the buffer member (10), and a bearing (12) is rotatably connected to the outer side of the rotating member body (1).
2. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: The piston (3) has a plurality of sets of thread grooves formed inside. The internal structure size of the thread grooves is designed to correspond to the external structure size of the screw (5). The screw (5) is connected to the piston (3) via the thread grooves.
3. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: A pressure chamber (13) is provided inside the container (8), and an O-ring (14) and two sets of sealing ring step seals (15) are provided outside the pressure chamber (13) and inside the container (8).
4. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: The internal structure size of the buffer groove (11) is designed to correspond to the external structure size of the buffer component (10), and the two groups of buffer components (10) are connected via the buffer groove (11).
5. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: A plurality of groups of elastic semicircular blocks are arranged inside the buffer groove (11), and the plurality of groups of elastic semicircular blocks are distributed at equal intervals inside the buffer groove (11). The buffer groove (11) is connected to the buffer member (10) via the elastic semicircular blocks.
6. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: A guide groove is provided inside the receiving member (8), the guide groove is designed to be an arc-shaped structure, and the internal structure size of the guide groove is designed to correspond to the external structure size of the buffer member (10). The receiving member (8) is connected to the buffer member (10) via a guide wiper.
7. The brake mechanism of a five-axis machining center according to claim 1, characterized in that: The receiving member (8) is connected to the fixing seat (2) via a fixing member (7), and the friction plate (6) is connected to the rotating member body (1) via bolts.