阅读说明：本技术 一种用于激光加工头的良导热大负载精密位移调整架 (A accurate displacement adjustment frame of good heat conduction heavy load for laser beam machining head ) 是由 方笑尘 方强 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种用于激光加工头的精密位移调整架,包括基座、滑块和拖动机构,所述基座上设置有所述滑块和所述拖动机构,其中所述基座与所述滑块的接触面上至少具有一个自润滑结构,所述拖动机构拖动所述滑块与所述基座相对运动；本发明提供的用于激光加工头的精密位移调整架,创造性的将自润滑结构引入调整架,在减小摩擦力的同时可以大大增大滑块与基座的接触面积,使滑块与基座之间的导热能力和负载能力大幅提高,当使用在激光加工头这种需要良导热的场合,可以高效地将固定在滑块上载荷的热量通过滑块基座传递出来,满足相关应用要求。(The invention discloses a precise displacement adjusting frame for a laser processing head, which comprises a base, a sliding block and a dragging mechanism, wherein the sliding block and the dragging mechanism are arranged on the base; the precision displacement adjusting frame for the laser processing head provided by the invention creatively introduces the self-lubricating structure into the adjusting frame, so that the friction force is reduced, the contact area between the sliding block and the base can be greatly increased, the heat conduction capability and the load capacity between the sliding block and the base are greatly improved, and when the precision displacement adjusting frame is used in the laser processing head which needs good heat conduction, the heat of the load fixed on the sliding block can be efficiently transferred out through the sliding block base, thereby meeting the related application requirements.)

1. The utility model provides a fine displacement adjustment frame of good heat conduction heavy load for laser beam machining head which characterized by: the base is provided with the sliding block and the dragging mechanism, a self-lubricating structure is arranged between the base and the sliding block, and the dragging mechanism is used for dragging the sliding block and the base to move relatively to form a one-dimensional adjusting frame.

2. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 1 wherein: the base encircles the sliding block, the encircling angle exceeds 180 degrees, and the dragging mechanism is adjusted to enable the sliding block to move in the axis direction of an encircling surface formed by the sliding block and the base.

3. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 1 wherein: the slider is ring-shaped, the base encircles the slider, the formed encircling surface is a cylindrical surface, and the dragging mechanism is adjusted to enable the slider to move in the inner hole of the base along the axis of the inner hole.

4. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 1 wherein: the sliding block is in a circular ring shape, and the dragging mechanism is adjusted to enable the circular ring-shaped sliding block to rotate along the axis of the circular ring or rotate around the axis.

5. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in any one of claims 1 to 4 wherein: the sliding block is made of a self-lubricating material (212), or the sliding block is made of a sliding block base body (211) and the self-lubricating material (212) coated on the surface of the sliding block base body, or the sliding block is made of the sliding block base body (211) and the self-lubricating material (212) embedded on the surface of the base body.

6. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 5 wherein: the self-lubricating material (212) is graphite and the base is made of a metallic material.

7. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 1 wherein: the dragging component is in threaded connection with the sliding block.

8. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 1 wherein: the device comprises a first-stage base (11) and a first-stage sliding block (21), wherein the first-stage sliding block (21) and a first-stage dragging mechanism (31) connected with the first-stage sliding block (21) are arranged on the first-stage base (11) to form a one-dimensional adjusting frame;

a secondary base (12) is fixedly arranged on the primary sliding block (21), a secondary sliding block (22) and a secondary dragging mechanism (32) connected with the secondary sliding block (22) are arranged on the secondary base (12), and the sliding direction of the secondary sliding block (22) is perpendicular to that of the primary sliding block (21) to form a two-dimensional adjusting frame.

9. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 8 wherein: a three-stage sliding block (23) is directly arranged on the light through hole of the second-stage sliding block (22), the three-stage sliding block (23) is annular, and a self-lubricating material is arranged between the three-stage sliding block (23) and the light through hole of the second-stage sliding block (22); the three-stage slide block (23) moves along the axis in the light through hole of the two-stage slide block (22), or the three-stage slide block (23) rotates around the axis in the light through hole of the two-stage slide block (22).

10. A fine displacement adjustment mount with good thermal conductivity and high load for a laser processing head as claimed in claim 8 wherein: when the third-stage sliding block (23) rotates around the axis in the light through hole of the second-stage sliding block (22), the third-stage dragging mechanism comprises a rotating rod (332) connected with the third-stage sliding block (23), a threaded thimble (331) used for pushing the rotating rod (332) to rotate and a spring thimble (333) used for enabling the rotating rod (332) to reset, and the rotating rod (332) is clamped between the threaded thimble (331) and the spring thimble (333).

Technical Field

The invention belongs to the field of mechanical displacement adjusting frames, and particularly relates to a fine heat conduction and large load precise displacement adjusting frame for a laser processing head.

Background

Precision displacement adjustment stands are used in many devices for the precise adjustment of the relative positions of certain components. In a laser processing head, since parts such as a laser output head, a laser lens, and a laser nozzle need to be replaced, in order to compensate for a positional error due to the replacement, it is generally necessary to adjust the positions of the laser output head, the laser nozzle, the laser lens, and the like, and in this case, a displacement adjusting jig is necessary. In addition, in the laser processing apparatus, it is sometimes necessary to adjust the position of an optical element such as a lens to perform some function, and in this case, it is also necessary to displace the adjustment holder. In laser machining heads, since the passage of the laser light through the optical system generates stray light, the power of which increases with the increase in the operating power of the system, which stray light will serve as a heat source for heating all components inside the optical system, it is generally required that all components supporting the optical components in the tool chamber have good thermal conductivity, as well as good thermal conductivity for the adjustment frame carrying the optical components. In some applications, it is also desirable that the adjustable mount have sufficient load capacity.

At present, in the technical scheme of commercial or published precision displacement adjusting frames, when the load is large, the adjusting frames realize relative movement through guide rails, the heat on the components fixed on the adjusting frames can be outwards transferred through the surfaces of the guide rails except for being exhausted through air, generally, the contact surfaces of the guide rails are small, and the heat conducting capacity is limited. In some small load and small displacement adjusting occasions, in order to reduce the volume, the adjusted object is usually suspended in the air by an elastic structure, and the structure is adopted to ensure that the heat of the adjusted object can be basically exhausted only through the air. In the laser processing equipment, the defect of the heat conductivity of the displacement adjusting frame can limit the service power of the optical system and also influence the reliability of the optical system.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide a fine heat conduction and large load fine displacement adjusting frame for a laser processing head, which has the advantages of good heat conduction and large load capacity and can meet the requirement of the laser processing head on the heat conduction load of the fine position adjusting frame.

In order to achieve the purpose, the invention adopts the technical scheme that the adjusting device comprises a base, a sliding block and a dragging mechanism, wherein the sliding block and the dragging mechanism are arranged on the base, a self-lubricating structure is arranged between the base and the sliding block, and the dragging mechanism is used for dragging the sliding block and the base to move relatively to form a one-dimensional adjusting frame.

Furthermore, the base encircles the sliding block, the encircling angle exceeds 180 degrees, and the dragging mechanism is adjusted to enable the sliding block to move in the axis direction of an encircling surface formed by the sliding block and the base.

Furthermore, the slider is ring-shaped, the base encircles the slider, a formed encircling surface is a cylindrical surface, and the dragging mechanism is adjusted to enable the slider to move in the inner hole of the base along the axis of the inner hole.

Furthermore, the sliding block is in a ring shape, and the dragging mechanism is adjusted to enable the ring-shaped sliding block to rotate along the axis of the ring or rotate around the axis.

Further, the sliding block is made of a self-lubricating material, or the sliding block is made of a sliding block base body and a self-lubricating material coated on the surface of the sliding block base body, or the sliding block is made of a sliding block base body and a self-lubricating material embedded on the surface of the base body.

Further, the self-lubricating material is graphite, and the base is made of a metal material.

Further, the dragging component is in threaded connection with the sliding block.

The device further comprises a first-stage base and a first-stage sliding block, wherein the first-stage base is provided with the first-stage sliding block and a first-stage dragging mechanism connected with the first-stage sliding block to form a one-dimensional adjusting frame;

a second-stage base is fixedly arranged on the first-stage sliding block, a second-stage sliding block and a second-stage dragging mechanism 32 connected with the second-stage sliding block are arranged on the second-stage base, and the sliding direction of the second-stage sliding block is perpendicular to that of the first-stage sliding block, so that a two-dimensional adjusting frame is formed.

Further, a third-stage sliding block is directly arranged on the light through hole of the second-stage sliding block, the third-stage sliding block is annular, and a self-lubricating material is arranged between the third-stage sliding block and the light through hole of the second-stage sliding block; the third-stage slide block moves along the axis in the light through hole of the second-stage slide block, or the third-stage slide block rotates around the axis in the light through hole of the second-stage slide block.

Further, when tertiary slider rotates around the axis in the logical unthreaded hole of second grade slider, tertiary mechanism part that drags includes the dwang of being connected with tertiary slider for promote dwang pivoted screw thread thimble and be used for making the spring thimble that the dwang resets, the dwang centre gripping is between screw thread thimble and spring thimble.

Compared with the prior art, the invention has at least the following beneficial effects:

the fine heat conduction and large load precise displacement adjusting frame for the laser processing head creatively introduces the self-lubricating structure into the adjusting frame, reduces the friction force, greatly increases the contact area between the slide block and the base, greatly improves the heat conduction capability and the load capability between the slide block and the base, and can efficiently transfer the heat of the load fixed on the slide block through the slide block base when being used in the laser processing head which needs fine heat conduction, thereby meeting the related application requirements.

The base encircles the sliding block, the encircling angle exceeds 180 degrees, the contact area between the sliding block and the base is enlarged, the sliding block is made of graphite, a sliding block matrix and a self-lubricating material coated on the surface of the sliding block matrix, or the sliding block matrix and the self-lubricating material embedded on the surface of the matrix, and the heat conduction capability between the base and the sliding block is greatly enhanced.

The self-lubricating material adopts graphite, and the graphite has high heat dissipation efficiency, small occupied space and light weight and also has a lubricating effect;

the dragging part is in threaded connection with the sliding block, so that the dragging part and the sliding block can be conveniently detached and replaced.

The three-stage dragging mechanism comprises a threaded thimble, a rotating rod and a spring thimble, wherein the rotating rod can drive the three-stage sliding block to rotate around the axis in the light through hole of the two-stage sliding block by pushing the threaded thimble, and the spring thimble can enable the rotating rod to reset more accurately; the three-level dragging component can enable the three-level sliding block to rotate around the axis, so that the adjusting direction of the adjusting frame is richer.

The adjusting frame provided by the invention has the advantages of simple structure and various adjusting directions, overcomes the defect of heat conductivity of the displacement adjusting frame in the prior art, and does not influence the service power and the stability of an optical system.

Drawings

Fig. 1A and 1B are schematic structural diagrams of a one-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine thermal conductivity and large load precision displacement adjusting frame for the laser processing head of the invention in two directions, respectively.

Fig. 2 is a schematic view of a slider having a self-lubricating structure in the embodiment shown in fig. 1A and 1B.

Fig. 3A is a schematic structural view of a one-dimensional linear displacement adjusting bracket with a circular slider, which is designed by using the technical scheme of the high-heat-conductivity and high-load precise displacement adjusting bracket for the laser processing head of the invention.

Fig. 3B is a schematic structural view of a one-dimensional angular displacement adjusting bracket with a circular slider, which is designed by using the technical scheme of the fine thermal conductivity and heavy load fine displacement adjusting bracket for the laser processing head of the invention.

Fig. 4 is a schematic view of a circular ring slider having a self-lubricating structure in the solution shown in fig. 3A and 3B.

Fig. 5 is a schematic structural view of a two-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine heat conduction and large load precise displacement adjusting frame for the laser processing head provided by the invention.

Fig. 6 is a schematic structural view of a three-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine heat conduction and large load precise displacement adjusting frame for the laser processing head provided by the invention.

Wherein: 11. 12 respectively represent a primary base and a secondary base; 21. 22, 23 represent a first-stage slider, a second-stage slider and a third-stage slider, respectively; 211 is a slider matrix, 212 is a self-lubricating material; 31 denotes a primary drag mechanism; 32 denotes a secondary drag mechanism; 331 is a screw thimble, 332 is a rotating rod and 333 is a spring thimble.

Detailed Description

The fine displacement adjustment frame with good heat conductivity and large load for a laser processing head according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The invention provides a fine heat conduction and large load precise displacement adjusting frame for a laser processing head, which comprises a base, a sliding block and a dragging mechanism, wherein the sliding block and the dragging mechanism are arranged on the base, a self-lubricating structure is arranged between the base and the sliding block, and the dragging mechanism drags the sliding block and the base to move relatively to form a one-dimensional adjusting frame. The sliding friction is utilized to realize the relative motion between the sliding block and the base, and importantly, at least one of the contact surfaces of the base and the sliding block is provided with a self-lubricating structure, so that the sliding friction force is greatly reduced.

Usually, the base embraces the sliding block, the embracing angle exceeds 180 degrees, and the sliding block can move in the axial direction of an embracing surface formed by the sliding block and the base by adjusting the dragging mechanism. In order to limit the movement of the sliding block and the base in the non-movement direction, the base encircles the sliding block, and the encircling angle exceeds 180 degrees; the dragging mechanism is fixed on the base and can drag the sliding block and the base to move relatively. The mechanism adopts a self-lubricating structure, so that the contact area is greatly improved, the contact clearance is greatly reduced, the load capacity can be increased, the precision can be increased, and the heat conductivity between the sliding block and the base can be increased.

In the technical scheme, one basic structure is that the dragging mechanism enables the sliding block to move along the axial direction of the encircling surface of the base and the sliding block, and thus a one-dimensional linear displacement adjusting frame is formed.

In the technical scheme, the one basic structure is that the surrounding surfaces of the sliding block and the base are cylindrical surfaces, and the dragging mechanism can enable the sliding block to move around the axis of the surrounding surfaces of the base and the sliding block, so that the one-dimensional angular displacement adjusting frame is formed.

In the technical scheme, the self-lubricating structure is usually manufactured on the sliding block, so that the manufacturing is simple. The sliding block can be made of a self-lubricating material, and also can be made of a sliding block base body and a self-lubricating material coated on the surface of the sliding block base body; the self-lubricating material can also be made of a slider matrix and a self-lubricating material embedded on the surface of the matrix. The base is usually made of metal materials, so that the processing is convenient, the strength is good, the heat conductivity is good, and the cost is low.

The material 212 of which the self-lubricating structure is made is typically graphite. The graphite has good thermal conductivity, low cost and easy processing.

Typically, the traction member is threadedly coupled to the base.

And a one-dimensional adjusting frame is superposed on the structure of the one-dimensional adjusting frame to form a two-dimensional adjusting frame. The method comprises the following steps: a secondary base 11 is fixed on a primary slide block 21 of the one-dimensional adjusting frame, a secondary slide block 22 is arranged on the secondary base 11, and a secondary dragging mechanism 32 is fixedly arranged on the secondary base; wherein, the secondary base 12 surrounds the secondary slide block 22, and the surrounding angle exceeds 180 degrees; at least one contact surface of the secondary base 12 and the secondary slide block 22 has a self-lubricating structure; the secondary dragging mechanism 32 drags the secondary slide block 22 and the secondary base 12 to move relatively; one-dimensional light through holes are formed in the first-stage base 11 and the first-stage sliding block 21 of the one-dimensional adjusting frame, two-dimensional light through holes are formed in the second-stage base 12 and the second-stage sliding block 22 of the two-dimensional adjusting frame, the aperture of the one-dimensional light through holes is larger than that of the two-dimensional light through holes, and the laser processing head is subjected to fine adjustment through the adjusting frame.

And adding one dimension to the structure of the two-dimensional adjusting frame to form a three-dimensional adjusting frame. The method comprises the following steps: a three-stage sliding block (23) is directly arranged on the light through hole of the second-stage sliding block (22), the three-stage sliding block (23) is annular, and a self-lubricating material is arranged between the three-stage sliding block (23) and the light through hole of the second-stage sliding block (22); the three-stage slide block (23) moves along the axis in the light through hole of the two-stage slide block (22), or the three-stage slide block (23) rotates around the axis in the light through hole of the two-stage slide block (22).

In the three-dimensional adjusting frame, when the three-stage sliding block (23) rotates around an axis in the light through hole of the two-stage sliding block (22), the three-stage dragging mechanism part comprises a rotating rod (332) connected with the three-stage sliding block (23), a threaded thimble (331) used for pushing the rotating rod (332) to rotate and a spring thimble (333) used for resetting the rotating rod (332), and the rotating rod (332) is clamped between the threaded thimble (331) and the spring thimble (333).

Fig. 1A and 1B are schematic structural diagrams of a one-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine thermal conductivity and large load precision displacement adjusting frame for the laser processing head of the invention in two directions, respectively. The slider in this configuration is shown in figure 2. Three surfaces of a first-stage sliding block 21 in the adjusting frame are in complete contact with corresponding surfaces of a first-stage base 11, and planes on two sides of the upper surface are in contact with corresponding surfaces of the base to form an encircling structure, so that the sliding block is limited to move only in a one-dimensional linear direction. The dragging component 31 is fixed on the primary base 11, and usually adopts a thread structure, so that the position of the dragging component 31 can drag the primary slide block 21 to adjust the position. The slider base 211 of the primary slider 21 is made of copper, and self-lubricating material, usually graphite, is embedded on the surface surrounded by the rest of the base.

Fig. 3A is a schematic structural view of a one-dimensional linear displacement adjusting bracket with a circular slider, which is designed by using the technical scheme of the high-heat-conductivity and high-load precise displacement adjusting bracket for the laser processing head of the invention. The structure of the circular ring-shaped slider is shown in fig. 4, and is composed of a base 211 and a self-lubricating material embedded on the base, wherein the base is usually made of copper, and the self-lubricating material is usually graphite. The annular first-level slide block 21 can move along the axis of the inner hole in the inner hole of the first-level base body 11, and the dragging mechanism part 31 is adjusted to enable the slide block to move in one dimension. The position of the slider can be adjusted by mounting the laser lens on the slider.

Fig. 3B is a schematic structural view of a one-dimensional angular displacement adjusting bracket with a circular slider, which is designed by using the technical scheme of the fine thermal conductivity and heavy load fine displacement adjusting bracket for the laser processing head of the invention. The structure of the circular ring-shaped slider is shown in fig. 4, and is composed of a base 211 and a self-lubricating material embedded on the base, wherein the base is usually made of copper, and the self-lubricating material is usually graphite. The annular first-stage sliding block 21 can rotate along the axis of the ring in the first-stage base 11, and the dragging mechanism part 31 is adjusted to enable the sliding block to displace angularly in one dimension.

Fig. 5 is a schematic structural view of a two-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine heat conduction and large load precise displacement adjusting frame for the laser processing head provided by the invention. The two-dimensional adjusting frame is formed by superposing two one-dimensional adjusting frames, wherein the secondary base 12 and the primary slide block 21 are fixed together, and the two-dimensional slide blocks can move in two dimensions by adjusting the dragging mechanism parts 31 and 32.

Fig. 6 is a schematic structural view of a three-dimensional linear displacement adjusting frame designed by using the technical scheme of the fine heat conduction and large load precise displacement adjusting frame for the laser processing head provided by the invention. The two-dimensional linear displacement adjusting frame and the one-dimensional angular displacement adjusting frame are combined, wherein the secondary base 12 is fixed with the primary slide block 21, the tertiary slide block 23 is directly fixed on the secondary slide block 22, the thread thimble 331 and the spring thimble 333 are fixed on the secondary slide block 22, and the rotating rod 332 is connected with the tertiary slide block 23. The mechanism prism is fixed on the three-stage slide block 23, so that centering and beam direction adjustment can be realized.

The invention provides a technical scheme of a fine heat conduction large-load precision displacement adjusting frame for a laser processing head, which has the following effects compared with the existing commercial products: the load capacity is greatly improved, the laser output head centering device can be used for centering application of a laser output head, the heat conduction capacity is greatly improved, and the laser output head centering device can be used for centering of a laser lens, focusing of the laser lens and other applications.