CN111384836A

CN111384836A - Linear power machine

Info

Publication number: CN111384836A
Application number: CN202010312044.3A
Authority: CN
Inventors: 朱学超; 刘旭; 盖立武; 史浩东; 姜启亮
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-07-07

Abstract

The invention discloses a linear power machine, comprising: stator module, active cell subassembly, frame and guide rail, the active cell subassembly slip cover is established the guide rail is outside, the active cell subassembly with be equipped with the lubricated part of self-lubricating type between the guide rail. The self-lubricating part can play a lubricating role, so that the moving resistance of the rotor assembly is reduced, the abrasion of the rotor assembly and the guide rail is reduced, the moving precision is ensured, and the service life is prolonged.

Description

Linear power machine

Technical Field

The invention relates to the technical field of motors, in particular to a linear power machine.

Background

The reciprocating motion of the existing electric tools and some household appliances, toys, etc. is usually realized by a rotary motor and a conversion mechanism, which has the following problems: the volume is large, more energy consumption is needed to drive the conversion mechanism, the precision is low, and the cost is high.

The conventional mover component of the linear power machine generally has large running resistance, so that the problems of damaging the mover component and reducing the running precision are easily caused, and the service life of the power machine can be even seriously reduced. In addition, the problems of large volume, high cost and low power exist, the device cannot be applied to tools, and if the power is increased, the problem of poor heat dissipation is easy to occur.

Therefore, how to provide a linear power machine to reduce the running resistance and prolong the service life thereof is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a linear power machine, which can effectively reduce the running resistance and prolong the service life.

In order to achieve the purpose, the invention provides the following technical scheme:

a linear power machine, comprising: stator module, active cell subassembly and frame, the stator module cover is established the active cell subassembly is outside, stator module fixes in the frame, still includes the guide rail, the active cell subassembly slip cap is established the guide rail is outside, the active cell subassembly with be equipped with the lubricated part of self-lubrication type between the guide rail.

Preferably, the self-lubricating type lubricating member is a graphite lubricating member.

Preferably, the graphite lubricating part is graphite lubricating powder or graphite lubricating block, and the periphery of the guide rail is provided with a containing part for filling the graphite lubricating powder or the graphite lubricating block.

Preferably, the receiving portion is a ring groove or a hole provided at an outer periphery of the guide rail.

Preferably, the guide rail is of a hollow structure.

Preferably, the base includes a front support member and a rear support member, the front support member is fixed to the front end of the stator assembly, the rear support member is fixed to the rear end of the stator assembly, the front end of the guide rail is fixed to the front support member, the rear end of the guide rail is fixed to the rear support member, and a preset distance is provided between opposite end surfaces of the front support member and the rear support member.

Preferably, the side wall of the rear support is provided with heat dissipation holes for dissipating heat at the rear end of the mover assembly.

Preferably, two ends of the guide rail are sleeved with buffer bodies for buffering two ends of the mover assembly.

Preferably, the guide rail is a non-magnetically conductive guide rail.

Preferably, the front end of the mover assembly is provided with a fastener for axially pressing the output portion against the front end of the mover assembly.

Compared with the prior art, the technical scheme has the following advantages:

the invention provides a linear power machine, comprising: stator module, active cell subassembly, frame and guide rail, the active cell subassembly slip cover is established the guide rail is outside, the active cell subassembly with be equipped with the lubricated part of self-lubricating type between the guide rail. The self-lubricating part can play a lubricating role, so that the moving resistance of the rotor assembly is reduced, the abrasion of the rotor assembly and the guide rail is reduced, the moving precision is ensured, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a cross-sectional view of a linear power machine according to one embodiment of the present disclosure;

fig. 2 is another cross-sectional view of a linear power machine according to an embodiment of the present invention.

The reference numbers are as follows:

1 is the buffer, 2 is the guide rail, 3 is the delivery outlet, 4 is the output, 5 is preceding support piece, 6 is stator module, 7 is graphite lubricating powder, 8 is the active cell subassembly, 9 is the back support piece, 10 is the louvre, 11 is the buffer plate, 12 is the fastener, 13 is the insulating ring, 14 is the notch cuttype insulating collar, 15 is stator magnetic conduction jar, 16 is the stator enameled wire, 17 is stator magnetic conduction tooth, 18 is the active cell strong magnet, 19 is the active cell magnetic conduction cover, 20 is the stay tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 1 is a cross-sectional view of a linear power machine according to an embodiment of the present invention; fig. 2 is another cross-sectional view of a linear power machine according to an embodiment of the present invention.

The linear power machine provided by the embodiment of the invention can be a cylindrical or square linear motor with a closed magnetic circuit and an electromagnet power machine, and comprises: stator module 6, active cell subassembly 8, frame and guide rail 2, active cell subassembly 8 slip cover is established in the guide rail 2 outside, is equipped with self-lubricating type lubricated part between active cell subassembly 8 and the guide rail 2, and wherein self-lubricating type lubricated part is the non-oil lubrication. The self-lubricating part can play a lubricating role, so that the moving resistance of the rotor assembly 8 is reduced, the abrasion of the rotor assembly 8 and the guide rail 2 is reduced, the moving precision is ensured, and the service life is prolonged.

Among them, the self-lubricating type lubricating member is preferably a graphite lubricating member. Besides the graphite lubricating part, the graphite lubricating part can also be a self-lubricating material such as copper-based powder metallurgy, iron-based powder metallurgy, composite fiber material, nylon plastic or polytetrafluoroethylene plastic.

Specifically, the graphite lubricating component is graphite lubricating powder 7 or graphite lubricating block, and the periphery of the guide rail 2 is provided with a containing part for filling the graphite lubricating powder 7 or the graphite lubricating block. The shape of the housing portion is not limited in the present embodiment as long as it can function to house the graphite lubricating powder 7 or the graphite lubricating cake.

Wherein the receiving portion is preferably a ring groove or a hole provided at the outer circumference of the guide rail 2. For example, a ring groove may be provided on the outer periphery of the guide rail 2, and the graphite lubricating powder 7 or the graphite lubricating block may be placed in the ring groove; or a plurality of holes are arranged on the periphery of the guide rail 2, and the holes are filled with the graphite lubricating powder 7 or the graphite lubricating blocks, and the distribution of the holes can be set according to requirements, wherein when the guide rail 2 is cylindrical, the plurality of holes can be uniformly distributed in the circumferential direction of the guide rail 2, so that the uniformity of lubrication is improved. In addition, the granularity of the graphite lubricant powder 7 is larger than the gap between the support tube 20 and the guide rail 2, the graphite lubricant powder 7 with the granularity of 1000-3000 meshes is preferred, and the powder amount of the graphite lubricant powder 7 is about half of the groove space.

Specifically, the guide rail 2 is a hollow structure, preferably a hollow square shaft or a hollow round shaft. The hollow structure has the characteristics of light weight and good heat dissipation function. The guide rail 2 can furthermore be made of a non-magnetic material, preferably an aluminum alloy and stainless steel.

In order to further improve the heat dissipation effect of the linear power machine, in this embodiment, the base includes a front support 5 and a rear support 9, the front support 5 is fixed at the front end of the stator assembly 6, the rear support 9 is fixed at the rear end of the stator assembly 6, the front end of the guide rail 2 is fixed at the front support 5, the rear end of the guide rail 2 is fixed at the rear support 9, a preset gap is provided between the opposite end surfaces of the front support 5 and the rear support 9, that is, the outer wall of the stator assembly 8 directly contacts with the outside, so that a good heat dissipation effect can be achieved, the service life is long, high-power operation can be performed, and the linear power machine can be applied to electric tools, such as an electric nail gun, a rivet gun, a glue gun, a jig saw.

Specifically, the stator assembly 6 comprises a stator magnetic cylinder 15, a stator enameled wire 16 ring and a stator magnetic tooth 17, wherein the stator magnetic tooth 17 and the stator enameled wire 16 are arranged at the inner ring of the stator magnetic cylinder 15 at intervals; the rotor component 8 comprises a supporting pipe 20, a rotor strong magnet 18 and a rotor magnetic sleeve 19, the rotor strong magnet 18 and the rotor magnetic sleeve 19 are sleeved outside the supporting pipe 20 at intervals, the supporting pipe 20 is sleeved outside the guide rail 2 in a sliding mode, an inner hole of the supporting pipe 20 is precisely ground and smooth, the surface hardness and the smoothness are improved, the service life is prolonged, an aluminum alloy material can be adopted, preferably aviation aluminum 7075 is selected, the magnetic material is not magnetic, the weight is light, under the condition that the thrust is the same, the acceleration can be improved, the power output is facilitated, the magnetic sleeve is preferably made of military pure iron DT4, the magnetic density is improved, the strong magnet is preferably made of neodymium iron boron N35 or more, and. When a high linear velocity is required, the diameter of the mover may be increased appropriately, and a linear bearing may be added to the support tube 20, the linear bearing being mounted on the guide rail 2.

The output part of the mover assembly 8 can be directly output by the axial end part, or output by selecting the periphery of the axial end part, for example, a fastener is arranged at the front end of the mover assembly 8, the fastener can axially press the output part 4 at the front end of the mover assembly 8, an output hole 3 for the output part 4 to extend out of the front support 5 is arranged at the periphery of the front support 5, and the output hole 3 can also play a role in heat dissipation. Specifically, the front end of the mover assembly 8 is provided with a stepped surface, wherein a stepped insulating ring 14 can be sleeved at the front end of the support tube 20, after the output portion 4 is sleeved on the stepped insulating insulator, an insulating ring 13 is sleeved to abut against the output portion 4, and then fastening is performed through a fastening member 12, and the fastening member 12 is preferably a nut screwed on the support tube 20. It should be understood that the output part 4 in this embodiment is output in an insulated manner, but the output part 4 may be directly pressed against the front end of the support tube 20 for output, and the output part is preferably made of metal.

Further, heat dissipation holes 10 for dissipating heat from the rear end of the mover assembly 8 are formed in the side walls of the rear support 9. The heat dissipation holes 10 can better dissipate heat from the inner cavity of the rear supporter 9.

In order to reduce the impact of the two ends of the mover assembly 8 on the front support 5 and the rear support 9, the two ends of the guide rail 2 are sleeved with buffer bodies 1 for buffering the two ends of the mover assembly 8, the buffer bodies 1 can be connected to the inner cavities of the front support 5 and the rear support 9 through glue or a convex-concave mechanism, and the buffer bodies 1 are preferably rubber pads. The hole of the buffering body 1 and the interference of guide rail 2 or transitional coupling seal dustproof, and the hole of the buffering body 1 and the outer wall line contact of guide rail 2 to reduce the contact surface, reduce the resistance, wherein the accessible sets up to circular arc or blade in the hole of the buffering body 1 and realizes the line contact. In addition, buffer plates 11 may be disposed at both ends of the mover assembly 8.

Specifically, the guide rail 2 is preferably an aluminum alloy or stainless steel guide rail 2, the surface of which is hardened to improve the wear resistance and is polished to reduce the roughness and the friction resistance, the aluminum alloy is preferably aviation aluminum 7075, and the stainless steel is preferably USU 304.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The linear power machine provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A linear power machine, comprising: stator module, active cell subassembly and frame, the stator module cover is established the active cell subassembly is outside, stator module fixes in the frame, its characterized in that still includes the guide rail, the active cell subassembly slip cap is established the guide rail is outside, the active cell subassembly with be equipped with the lubricated part of self-lubricating type between the guide rail.

2. The linear power machine of claim 1, wherein the self-lubricating type lubricating member is a graphite lubricating member.

3. The linear power machine according to claim 2, wherein the graphite lubricating member is graphite powder or a graphite block, and the guide rail is provided at an outer periphery thereof with a receiving portion for filling the graphite powder or the graphite block.

4. The linear power machine of claim 3, wherein the receiving portion is a groove or hole disposed on the outer periphery of the rail.

5. The linear power machine of claim 1, wherein the guide track is a hollow structure.

6. The linear power machine according to claim 1, wherein the frame includes a front support member and a rear support member, the front support member being secured to a front end of the stator assembly, the rear support member being secured to a rear end of the stator assembly, a front end of the guide rail being secured to the front support member, a rear end of the guide rail being secured to the rear support member, and a predetermined distance being provided between opposing end surfaces of the front support member and the rear support member.

7. The linear power machine according to claim 6, wherein the side wall of the rear support is provided with heat dissipation holes for dissipating heat from the rear end of the mover assembly.

8. The linear power machine according to claim 1, wherein buffering bodies for buffering both ends of the mover assembly are provided at both ends of the guide rail.

9. The linear power machine of claim 1, wherein the guide is a non-magnetically conductive guide.

10. The linear power machine according to any one of claims 1 to 9, wherein the front end of the mover assembly is provided with a fastener for axially pressing the output portion against the front end of the mover assembly.