阅读说明：本技术 一种基于熔融沉积3d打印的机械控制臂扭转关节 (Mechanical control arm torsion joint based on fused deposition 3D printing ) 是由 隋秀华 于 2020-07-01 设计创作，主要内容包括：本发明为一种基于熔融沉积3D打印的机械控制臂扭转关节,涉及一种机械控制臂,特别是涉及一种机械控制臂的关节；解决了机械控制臂扭转关节小直径优化方向上实现角度传感器布置、线路对扭转过程无阻碍并且满足熔融沉积3D打印的可行性的技术问题。本发明包括上臂、下臂、角度传感器、连接架、驱动块、滑块；上臂在与下臂相对扭转时,上臂内的止动槽带动驱动块使角度传感器的转轴转动；连接架上的环圈与下臂上部的内部圆柱面之间有用于过线的间隙；滑块能在下臂的环槽内滑动、能通过紧固件与上臂固定,限制上臂相对于下臂沿扭转的轴向移动。本发明在关节小直径优化方向上更进一步,主要用于制造机械控制臂和学习指导。(The invention discloses a mechanical control arm torsion joint based on fused deposition 3D printing, and relates to a mechanical control arm, in particular to a joint of the mechanical control arm; the technical problems that arrangement of an angle sensor is achieved in the small-diameter optimization direction of a torsion joint of a mechanical control arm, a circuit is free of obstruction to the torsion process, and feasibility of fused deposition 3D printing is met are solved. The invention comprises an upper arm, a lower arm, an angle sensor, a connecting frame, a driving block and a sliding block; when the upper arm and the lower arm are twisted relatively, the stop groove in the upper arm drives the driving block to enable the rotating shaft of the angle sensor to rotate; a gap for passing the wire is arranged between the ring on the connecting frame and the inner cylindrical surface at the upper part of the lower arm; the slider can slide in the annular groove of the lower arm, can be fixed with the upper arm through a fastener, and limits the upper arm to move along the torsional axial direction relative to the lower arm. The invention is further used in the joint minor diameter optimization direction, and is mainly used for manufacturing mechanical control arms and learning guidance.)

1. The utility model provides a mechanical control arm twists reverse joint based on fused deposition 3D prints, includes upper arm, underarm, angle sensor, and the upper arm upper end is equipped with upset joint (06-07), and the underarm lower extreme is equipped with upset joint (01-04), and angle sensor includes casing and pivot, its characterized in that:

the inner part and the outer part of the upper part of the lower arm are cylindrical surfaces and are coaxial, the upper end of the cylindrical surface of the inner part is provided with a groove (01-01), the lower side of the cylindrical surface of the outer part is provided with a ring groove (01-07), a limit (01-08) is arranged in the ring groove (01-07), and the inner part of the lower arm is provided with a wire passing groove (01-03);

an annular bracket (06-06) for fixing an angle sensor is arranged in the turnover joint (06-07) at the upper end of the upper arm, one side of the lower end of the annular bracket (06-06) is provided with a stop groove (06-01), the other side of the lower end of the annular bracket is provided with a wire passing hole (06-05), and the inner part of the lower part of the upper arm is a cylindrical surface;

comprises a connecting frame (03), a driving block (04) and a sliding block (05); the connecting frame (03) is provided with a ring (03-01), and the outer edge of the ring (03-01) is provided with a bulge (03-02); the driving block (04) is long-strip-shaped, and one end of the driving block is provided with a mounting hole (04-01);

the connecting frame is fixed on a shell of the angle sensor through a ring (03-01) on the connecting frame, and the driving block is fixed on a rotating shaft of the angle sensor through a mounting hole (04-01) on the driving block; the connecting frame is fixed on a groove (01-01) at the upper end of the inner cylindrical surface at the upper part of the lower arm through a bulge (03-02) on the connecting frame; a gap for passing the wire is arranged between the ring (03-01) on the connecting frame and the inner cylindrical surface at the upper part of the lower arm;

the inner cylindrical surface at the lower part of the upper arm is in clearance fit with the outer cylindrical surface at the upper part of the lower arm, and the driving block (04) is in clearance fit with a stop groove (06-01) in the upper arm; when the upper arm and the lower arm are twisted relatively, a stop groove (06-01) in the upper arm drives a driving block (04) to enable a rotating shaft of the angle sensor to rotate;

the sliding block (05) can slide in a ring groove (01-07) of the lower arm, can be fixed with the upper arm through a fastener, and limits the axial movement of the upper arm relative to the lower arm along torsion.

2. The mechanical control arm torsion joint based on fused deposition 3D printing according to claim 1, wherein: the sliding block (05) is provided with a bulge (05-02), the lower side of the inner cylindrical surface at the lower part of the upper arm is provided with a sliding groove (06-03), and the bulge (05-02) can slide into the sliding groove (06-03) in a clearance fit mode.

3. The mechanical control arm torsion joint based on fused deposition 3D printing according to claim 2, wherein: the bottom surface of the stop groove in the upper arm is an inclined surface.

4. The mechanical control arm torsion joint based on fused deposition 3D printing according to claim 3, wherein: dividing the lower arm into two parts by a plane which is vertical to the axis of the lower arm overturning joint (01-04) and is coincident with the torsion axis; the limit parts (01-08) in the ring grooves (01-07) are arranged on one part or two parts at the same time; the two parts are fastened by fasteners at positions between the outer cylindrical surface of the upper part of the lower arm and the lower arm turnover joint (01-04).

Technical Field

The invention relates to a mechanical control arm, in particular to a joint of the mechanical control arm.

Background

Most of the existing mechanical control arms are manufactured by the traditional machining mode, the traditional machining mode also determines the limitation of parts and product structures due to the limitation of processes and cost, and the machining period is also a main factor influencing the cost. And the structural optimization is more dependent on a sensor with high cost and higher integration, so that the mechanical control arm is not easy to realize in large-scale application and learning.

The 3D printing can break through the limitation of the traditional processing on the structure design, and although the 3D printing can produce various conceived structures, various technologies involved in the 3D printing have their own advantages and disadvantages. Nowadays, the fused deposition 3D printing technology is rapidly moving onto the desktops of workshops and laboratories, and provides a powerful helper for production and scientific research, but the support generated by fused deposition 3D printing sometimes brings great difficulty in post-processing of printed parts. Therefore, although 3D printing based on fused deposition is free from the constraint of the conventional processing technology to some extent, the structural optimization design based on this technology still has not little difficulty.

Disclosure of Invention

The technical problem to be solved is as follows:

the arrangement of an angle sensor and a circuit are realized in the optimized direction of the small diameter of the torsion joint of the mechanical control arm, so that the torsion process is not obstructed, and the feasibility of fused deposition 3D printing is met.

The technical scheme is as follows:

the mechanical control arm torsion joint comprises an upper arm, a lower arm, an angle sensor, a connecting frame, a driving block and a sliding block.

The upper end of the upper arm is provided with a turnover joint, an annular support for fixing the angle sensor is arranged in the turnover joint at the upper end of the upper arm, one side of the lower end of the annular support is provided with a stop groove, the other side of the lower end of the annular support is provided with a wire passing hole, and the inside of the lower part of the upper arm is a cylindrical surface. The underarm lower extreme is equipped with the upset and connects, and inside and outside on underarm upper portion are the face of cylinder and coaxial, and inside face of cylinder upper end is equipped with the recess, and outside face of cylinder downside is equipped with the annular, has the spacing in the annular, and the inside of underarm is equipped with the wire casing. The angle sensor includes a housing and a shaft. The connecting frame is provided with a ring, and the outer edge of the ring is provided with a bulge. The driving block is in a strip shape, and one end of the driving block is provided with a mounting hole.

The connecting frame is fixed on a shell of the angle sensor through a ring on the connecting frame, and the driving block is fixed on a rotating shaft of the angle sensor through a mounting hole on the driving block; the connecting frame is fixed on a groove at the upper end of the inner cylindrical surface at the upper part of the lower arm through a bulge on the connecting frame; and a gap for passing the wire is arranged between the ring on the connecting frame and the inner cylindrical surface at the upper part of the lower arm. The inner cylindrical surface at the lower part of the upper arm is in clearance fit with the outer cylindrical surface at the upper part of the lower arm, and the driving block is in clearance fit with the stop groove in the upper arm; when the upper arm and the lower arm are twisted relatively, the stop groove in the upper arm drives the driving block to enable the rotating shaft of the angle sensor to rotate; the slider can slide in the annular groove of the lower arm, can be fixed with the upper arm through a fastener, and limits the upper arm to move along the torsional axial direction relative to the lower arm.

For making slider and underarm assemble more easily, set up the arch on the slider, the downside of the inside face of cylinder of upper arm lower part sets up the spout, and the spout on the inside face of cylinder of upper arm lower part can be slided into with clearance fit mode to the arch of slider, carries out the preinstallation before the fastening.

In order to make it easier and more effective to remove the print support in the lower arm and to enable effective fixing of the drive block, the bottom surface of the stop groove in the upper arm is designed as a ramp.

Has the advantages that:

the sensor arrangement and the wire passing design are realized by fewer parts, the feasibility of printing is met, and the structure is simple and ingenious; the joint has fewer parts for realizing torsion and axial limiting, has higher integration level and is further used in the optimization direction of the small diameter of the joint.

Drawings

The invention relates to a mechanical control arm torsion joint based on fused deposition 3D printing, and the specification of the mechanical control arm torsion joint comprises 17 drawings, wherein the drawings of the drawings are described as follows:

FIG. 1 is a general assembly view;

fig. 2 is a schematic view of the assembly of the lower arm one 01 and the lower arm two 02;

fig. 3 is a schematic view of the assembly of the angle sensor 07 with the connecting frame 03 and the driving block 04;

fig. 4 is a schematic view of the connection frame 03 assembled with the first lower arm 01 and the second lower arm 02;

fig. 5 is a schematic view of the assembly of the slider 05 with the upper arm 06;

fig. 6 is an isometric view of the lower arm 01;

fig. 7 is a front view of the lower arm 01;

fig. 8 is a rear view of the lower arm 01;

fig. 9 is an isometric view of the lower arm 02;

fig. 10 is a front view of the lower arm 02;

fig. 11 is a rear view of the lower arm 02;

fig. 12 is an isometric view of the connecting bracket 03;

FIG. 13 is an isometric view of drive block 04;

figure 14 is an isometric view of the slider 05;

fig. 15 is an isometric view of the upper arm 06;

fig. 16 is a front view of the upper arm 06;

fig. 17 is a cross-sectional view taken along a-a in fig. 16.

Detailed Description

In order to realize the technical solution in the summary of the invention, the following design is selected as a preferred embodiment.

The fused deposition 3D printing-based design of the embodiment can realize the arrangement of the angle sensor under the condition of small diameter of the control arm, meet the assembly requirements of all parts and facilitate the complete disassembly of the printing support.

The present embodiment includes the following components: the mechanism comprises a first lower arm 01, a second lower arm 02, a connecting frame 03, a driving block 04, a slider 05, an upper arm 06, an angle sensor 07, a first screw 08 and a second screw 09.

Referring to fig. 6, 7 and 8, a lower arm-connecting frame fixing groove 01-01, a lower arm-inner cylindrical surface 01-02, a lower arm-first wire passing groove 01-03, a lower arm-first overturning joint 01-04, a lower arm-first threaded hole 01-05, a lower arm-outer cylindrical surface 01-06, a lower arm-first ring groove 01-07 and a ring groove angle limit 01-08 are arranged on the lower arm-first 01. The transition surface between the inner cylindrical surface 01-02 of the lower arm and the wire passing groove 01-03 of the lower arm is a conical surface.

Referring to fig. 9, 10 and 11, a lower arm II connecting frame fixing groove 02-01, a lower arm II inner cylindrical surface 02-02, a lower arm II wire passing groove 02-03, a lower arm II turning joint 02-04, a lower arm II cylindrical head counter bore 02-05, a lower arm outer cylindrical surface 02-06 and a lower arm II ring groove 02-07 are arranged on a lower arm II 02. The transition surface between the second lower arm inner cylindrical surface 02-02 and the second lower arm wire passing groove 02-03 is a conical surface.

As shown in fig. 12, a connecting frame ring 03-01 and a connecting frame bulge 03-02 are arranged on the connecting frame 03.

As shown in FIG. 13, the driving block 04 is provided with a driving block mounting hole 04-01 and a driving block wedge surface 04-02.

As shown in figure 14, a slider threaded hole 05-01 and a slider protrusion 05-02 are arranged on the slider 05.

Referring to fig. 15, 16 and 17, a driving block stop groove 06-01, an upper arm inner cylindrical surface 06-02, a sliding groove 06-03, an upper arm through hole 06-04, an upper arm wire passing hole 06-05, an upper arm angle sensor annular fixing frame 06-06 and an upper arm overturning joint 06-07 are arranged on an upper arm 06. The lower end surface of the driving block stop groove 06-01 is an inclined surface, and the upper end transition surface of the upper arm inner cylindrical surface 06-02 is a conical surface.

3D printing

And printing the first lower arm 01, the second lower arm 02, the connecting frame 03, the driving block 04, the sliding block 05 and the upper arm 06 by adopting a fused deposition mode. Wherein the lower arm one 01 is placed in the state shown in fig. 6, the lower arm two 02 is placed in the state shown in fig. 9, and the upper arm 06 is placed in the state shown in fig. 15. The support inside the upper arm 06 can be more conveniently and effectively detached through the upper space of the driving block stopping groove 06-01 and the upper arm wire passing hole 06-05.

Assembly

Referring to fig. 2, the axis of the lower arm I turning joint 01-04 is coincided with the axis of the lower arm II turning joint 02-04, the axis of the lower arm I outer cylindrical surface 01-06 is coincided with the axis of the lower arm outer cylindrical surface 02-06, and the lower arm I01 and the lower arm II 02 are pre-tightened together by a screw I08.

As shown in fig. 3, the connecting bracket 03 is assembled to the angle sensor 07; the rotating shaft of the angle sensor 07 is inserted into the driving block mounting hole 04-01, and the rotating shaft of the angle sensor 07 is in interference fit with the driving block mounting hole 04-01.

Referring to fig. 4, the link 03 is mounted on the lower arm one 01 and the lower arm two 02 by aligning the link projection 03-02 with the lower arm one link fixing groove 01-01 and the lower arm two link fixing groove 02-01; the connecting frame protrusion 03-02 is in interference fit with the lower arm I connecting frame fixing groove 01-01 and the lower arm II connecting frame fixing groove 02-01; the gap between the connecting frame ring 03-01 and the inner cylindrical surfaces 01-02 and 02-02 of the lower arm and the lower arm is used for passing wires.

As shown in fig. 5, a sliding block 05 is placed in a ring groove formed by a lower arm first ring groove 01-07 and a lower arm second ring groove 02-07; the driving block 04 is aligned with the driving block stop groove 06-01, the sliding groove 06-03 is aligned with the sliding block protrusion 05-02, the upper arm 06 is pushed to the upper arm through hole 06-04 to be coincided with the sliding block threaded hole 05-01 along the lower arm one outer cylindrical surface 01-06 and the lower arm outer cylindrical surface 02-06, and the sliding block 05 and the upper arm 06 are fastened together by the second screw 09 as shown in fig. 1. The driving block 04 is in clearance fit with the driving block stop groove 06-01, the upper arm inner cylindrical surface 06-02 is in clearance fit with the lower arm first outer cylindrical surface 01-06 and the lower arm outer cylindrical surface 02-06, and the sliding block 05 is in clearance fit with the lower arm first ring groove 01-07 and the lower arm second ring groove 02-07.

When the upper arm 06 and the lower arm 01 are twisted relatively, the driving block stop groove 06-01 drives the driving block 04 to rotate the rotating shaft of the angle sensor. The slider 05 slides within the grooves 01-07 while limiting axial movement of the upper arm 06 in torsion relative to the lower arm 01.