C-axis brake structure and C-axis

Abstract

The utility model relates to five -axis cradle turntable technical field discloses a C -axis brake structure and C -axis, include: set up in the inside of swing arm body brake inner race and brake outer race, brake inner race is provided with first threaded hole, and the core shaft is provided with second threaded hole, first threaded hole with second threaded hole position corresponds, and screw is connected with first threaded hole and second threaded hole thread, realize brake inner race with the end face connection of core shaft, brake outer race is covered in brake inner race outside, brake outer race fixed setting, the inner wall of brake outer race is provided with brake pad, lock oil structure is set up in the clearance between brake pad and the inner wall of brake outer race, be provided with oil injection hole on brake outer race, and oil injection hole is used for connecting hydraulic system and clearance. Set up like this, is favorable to simplify brake structure, improve brake effect.

Description

Technical Field

[0001] This utility model relates to the field of five-axis cradle turntable technology, and in particular to a C-axis brake structure and a C-axis. Background Technology

[0002] The five-axis cradle rotary table is a high-end functional component in CNC machine tools. The C-axis enables the five-axis cradle rotary table to machine complex three-dimensional curved surfaces. At the same time, the continuous rotation capability of the C-axis also improves machining flexibility and efficiency. Currently, the C-axis of existing five-axis cradle rotary tables mainly adopts worm gear drive or torque motor direct drive.

[0003] The C-axis braking system of the five-axis cradle turntable with the above two drive types adopts a ring-shaped braking structure. The existing ring-shaped braking structure is complex and the braking effect is not ideal. Utility Model Content

[0004] The purpose of this invention is to provide a C-axis brake structure and a C-axis to simplify the brake structure and improve the braking effect of the C-axis.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A C-axis brake structure includes: an inner brake ring and an outer brake ring disposed inside a swing arm body; the inner brake ring has a first threaded hole, and a spindle has a second threaded hole; the first threaded hole and the second threaded hole are positioned correspondingly; a screw is threadedly connected to the first threaded hole and the second threaded hole to achieve end face connection between the inner brake ring and the spindle; the outer brake ring is sleeved outside the inner brake ring and is fixedly disposed; a brake pad is disposed on the inner wall of the outer brake ring; an oil-locking structure is disposed in the gap between the brake pad and the inner wall of the outer brake ring; an oil injection hole is disposed on the outer brake ring, and the oil injection hole is used to connect the hydraulic system and the gap.

[0007] Preferably, the oil-locking structure is a raised structure.

[0008] Preferably, the protrusion structure is a tooth-shaped structure.

[0009] Preferably, both the outer brake ring and the inner brake ring are made of carbon steel bars.

[0010] Preferably, the hydraulic system includes an oil pump and an oil supply line, wherein the oil pump is connected to the oil injection port through the oil supply line.

[0011] This utility model also provides a C-axis, including: the swing arm body, and the spindle, bearing assembly and the C-axis brake structure disposed inside the swing arm body. The spindle is connected to the swing arm body through the bearing assembly. A worktable is provided on one end face of the spindle, and the other end face of the spindle is detachably connected to the C-axis brake structure.

[0012] Preferably, the bearing assembly includes a large bearing, a bearing support assembly, and a small bearing. The large bearing engages with the end of the mandrel closest to the worktable, and the large bearing is connected to the swing arm body via the bearing support assembly. The small bearing engages with the end of the mandrel furthest from the worktable. In the radial direction, the swing arm body limits the small bearing. In the axial direction, the mandrel and the brake inner ring limit the small bearing.

[0013] Preferably, the bearing support assembly includes a support ring, an inner support member, and an outer support member. The inner support member is detachably connected to the spindle, the outer support member is detachably connected to the swing arm body, the support ring is detachably connected to the outer support member, a portion of the large bearing is disposed on the support ring, and the other portion of the large bearing is disposed on the inner support member.

[0014] Preferably, the bearing assembly further includes a bearing retainer ring, which is disposed between the bottom surface of the worktable and the end face of the large bearing near the worktable.

[0015] Preferably, the C-axis further includes a rear cover, which is detachably connected to the end face of the swing arm body away from the worktable.

[0016] According to the above description, the present invention discloses the following technical effects:

[0017] This utility model provides a C-axis brake structure and a C-axis, comprising an inner brake ring and an outer brake ring disposed inside the swing arm body. The inner brake ring has a first threaded hole, and the spindle has a second threaded hole. The first threaded hole and the second threaded hole are positioned correspondingly. A screw is threadedly connected to the first threaded hole and the second threaded hole to achieve end face connection between the inner brake ring and the spindle. Compared with the existing ring-shaped brake structure, this simplifies the C-axis brake structure. The outer brake ring is sleeved outside the inner brake ring and is fixedly disposed. A brake pad is disposed on the inner wall of the outer brake ring, and an oil-locking structure is disposed in the gap between the brake pad and the inner wall of the outer brake ring to reduce the leakage of hydraulic oil from the gap and ensure that the outer brake ring generates stable resistance to the inner brake ring, thereby improving the braking effect of the C-axis. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the full C-axis section provided for an embodiment of this specification;

[0020] Figure 2 This is a full sectional schematic diagram of the C-axis brake structure provided in the embodiments of this specification;

[0021] Figure 3 Provided for the embodiments of this specification Figure 2 Enlarged view of part A in the middle;

[0022] Among them, 1-spindle; 2-large bearing; 3-small bearing; 4-support ring; 5-bearing pressure ring; 6-swing arm body; 7-brake inner ring; 8-worktable; 9-turntable coaxial cover; 10-turntable plug; 11-brake outer ring; 12-time grid adjustment piece; 13-grating encoder shaft; 14-grating; 15-grating fixing bracket; 16-grating fixing large plate; 17-rear cover; 18-tooth structure; 19-brake pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 2 and 3 As shown in the embodiment of this specification, a C-axis brake structure is provided, including: an inner brake ring 7 and an outer brake ring 11 disposed inside the swing arm body 6. The inner brake ring 7 is provided with a first threaded hole, and the spindle 1 is provided with a second threaded hole. The first threaded hole and the second threaded hole are positioned correspondingly. A screw is threadedly connected to the first threaded hole and the second threaded hole to realize the end face connection between the inner brake ring 7 and the spindle 1. The outer brake ring 11 is sleeved on the outside of the inner brake ring 7 and is fixedly disposed. A brake pad 19 is welded to the inner wall of the outer brake ring 11. An oil-locking structure is provided in the gap between the brake pad 19 and the inner wall of the outer brake ring 11 to reduce the leakage of hydraulic oil from the gap, thereby ensuring that the outer brake ring 11 maintains a stable resistance to the inner brake ring 7, so as to improve the braking effect.

[0025] Working principle: The rotation of the spindle 1 drives the inner ring of the bearing to rotate. When hydraulic oil is injected, the hydraulic oil instantly fills the gap inside the outer brake ring 11, causing the brake pads 19 of the outer brake ring 11 to deform and contact the outer wall of the inner brake ring 7, thereby achieving the braking effect. When the hydraulic oil returns to the hydraulic system, the brake pads 19 of the outer brake ring 11 return to their original shape, causing the brake pads 19 to separate from the outer wall of the inner brake ring 7, and the spindle 1 continues to rotate.

[0026] The preferred oil-locking structure is a raised structure, which can be partially or completely raised according to actual conditions to achieve the purpose of oil locking.

[0027] like Figure 3 As shown, the protruding structure is preferably a tooth-shaped structure 18, but it can also be a semi-circular protruding structure, which can be set according to actual needs.

[0028] Both the outer brake ring 11 and the inner brake ring 7 are made of carbon steel bars. Carbon steel bars have the advantages of dense structure, stable performance, and low cost; moreover, the increased wall thickness of the inner brake ring 7 and outer brake ring 11 made of carbon steel bars is beneficial to improving the torque of the inner brake ring 7 and outer brake ring 11.

[0029] The hydraulic system includes an oil pump and an oil supply line, with the oil pump connected to the oil injection port via the oil supply line.

[0030] like Figure 1 As shown in the embodiments of this specification, a C-axis is also provided, including: a swing arm body 6, a spindle 1, a bearing assembly, and the aforementioned C-axis brake structure disposed inside the swing arm body 6. The spindle 1 is connected to the swing arm body 6 via the bearing assembly. A worktable 8 is provided on one end face of the spindle 1 for placing workpieces, and the other end face of the spindle 1 is detachably connected to the C-axis brake structure. A turntable coaxial cover 9 and a turntable plug 10 are installed inside the worktable 8 to prevent impurities from entering the interior of the spindle 1.

[0031] The bearing assembly includes a large bearing 2, a bearing support assembly, and a small bearing 3. The large bearing 2 mates with the end of the spindle 1 closest to the worktable 8. The large bearing 2 is connected to the swing arm body 6 via the bearing support assembly. The bearing support assembly is used to house the large bearing 2, and the swing arm body 6 is used to house the bearing support assembly. The small bearing 3 mates with the end of the spindle 1 furthest from the worktable 8. In the radial direction, the swing arm body 6 limits the small bearing 3. In the axial direction, the spindle 1 and the brake inner ring 7 limit the small bearing 3. This arrangement helps prevent the large bearing 2 and the small bearing 3 from moving sideways, thus improving the stability of the C-axis.

[0032] The bearing support assembly includes a support ring 4, an inner support member, and an outer support member. The inner support member is detachably connected to the spindle 1, and the outer support member is detachably connected to the swing arm body 6. The support ring 4 is detachably connected to the outer support member. The outer support member is used to support the support ring 4. One part of the large bearing 2 is set on the support ring 4, and the other part of the large bearing 2 is set on the inner support member. The inner support member is used to support the large bearing 2.

[0033] The bearing assembly also includes a bearing retainer ring 5, which is disposed between the bottom surface of the worktable 8 and the end face of the large bearing 2 near the worktable 8, thereby preventing the large bearing 2 from moving axially and improving the stability of the device.

[0034] The C-axis also includes a rear cover 17, which is detachably connected to the end face of the swing arm body 6 away from the worktable 8. The rear cover 17 is used to provide a closed environment for the braking mechanism inside the C-axis to prevent dust and impurities from entering.

[0035] In addition, the C-axis also includes the following components: Specifically, a grating adjustment piece 12 is connected to the brake outer ring 11, and a grating encoder shaft 13 is installed inside the spindle 1 near the brake inner ring 7. One end of the grating fixing bracket 15 and the grating 14 are connected to the grating encoder shaft 13 for detecting the rotation angle and position of the C-axis. A grating fixing plate 16 is installed at the other end of the grating fixing bracket 15. The grating fixing plate 16 contacts the grating adjustment piece 12, and the rear cover 17 is located outside the grating fixing plate 16.

[0036] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to the method section.

[0037] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A C-axis brake structure, characterized in that, include: An inner brake ring and an outer brake ring are disposed inside the swing arm body. The inner brake ring has a first threaded hole, and the spindle has a second threaded hole. The first threaded hole and the second threaded hole are positioned correspondingly. A screw is threadedly connected to the first threaded hole and the second threaded hole to achieve end face connection between the inner brake ring and the spindle. The outer brake ring is sleeved outside the inner brake ring and is fixedly disposed. A brake pad is disposed on the inner wall of the outer brake ring, and an oil-locking structure is disposed in the gap between the brake pad and the inner wall of the outer brake ring. An oil injection hole is disposed on the outer brake ring, and the oil injection hole is used to connect the hydraulic system and the gap.

2. The C-axis brake structure according to claim 1, characterized by The oil-locking structure is a raised structure.

3. The C-axis brake structure according to claim 2, wherein The protruding structure is a tooth-shaped structure.

4. The C-axis brake structure according to claim 1, wherein Both the outer brake ring and the inner brake ring are made of carbon steel bars.

5. The C-axis brake structure according to claim 1, wherein The hydraulic system includes an oil pump and an oil supply line, and the oil pump is connected to the oil injection port through the oil supply line.

6. A C-axis characterized by include: The swing arm body, the spindle, the bearing assembly, and the C-axis brake structure according to any one of claims 1 to 5 are disposed inside the swing arm body. The spindle is connected to the swing arm body through the bearing assembly. A worktable is provided on one end face of the spindle, and the other end face of the spindle is detachably connected to the C-axis brake structure.

7. The C-axis of claim 6, wherein, The bearing assembly includes a large bearing, a bearing support assembly, and a small bearing. The large bearing engages with the end of the mandrel closest to the worktable. The large bearing is connected to the swing arm body via the bearing support assembly. The small bearing engages with the end of the mandrel furthest from the worktable. In the radial direction, the swing arm body limits the small bearing. In the axial direction, the mandrel and the brake inner ring limit the small bearing.

8. The C-axis of claim 7, wherein, The bearing support assembly includes a support ring, an inner support member, and an outer support member. The inner support member is detachably connected to the spindle, the outer support member is detachably connected to the swing arm body, and the support ring is detachably connected to the outer support member. A portion of the large bearing is disposed on the support ring, and the other portion of the large bearing is disposed on the inner support member.

9. The C-axis of claim 7, wherein, The bearing assembly further includes a bearing retainer ring, which is disposed between the bottom surface of the worktable and the end face of the large bearing near the worktable.

10. The C-axis of claim 6, wherein, It also includes a rear cover, which is detachably connected to the end face of the swing arm body away from the worktable.

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