A guide rail mechanism

Abstract

The invention provides a guide rail mechanism, when the guide rail mechanism is a rolling guide rail, the feature is that a plurality of corrugated rings (301) are arranged on the circumferential surface of the rolling body (3) along the axial direction of the rolling body (3), the corrugated ring (301) is a ring-shaped protrusion with the axis of the rolling body (3) as the center, and a plurality of grooves are formed on the rail body (1) and / or the support platform (2) to cooperate with the corrugated ring (301), the grooves extend along the longitudinal direction of the rail body (1). When the guide rail mechanism is a sliding guide rail, the feature is that in the cross section, the surface of the rail body (1) in contact with the support platform (2) and the surface of the support platform (2) in contact with the rail body (1) are both wave-shaped, and the corrugations of the two are in the form of dog-tooth occlusion. The guide rail mechanism provided by the invention realizes a large carrying capacity and a high limit speed through a relatively simple structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of guide rail technology, in particular to a guide rail mechanism. BACKGROUND

[0002] In the current guide rail mechanism, the lateral bearing capacity of the rolling element is generally insufficient, and it is usually necessary to arrange the rolling element in multiple directions to compensate for each other, which increases the size of the guide rail mechanism, resulting in a low limit speed of the guide rail mechanism and a complex structure that is easy to damage. Therefore, how to improve the guide rail mechanism to achieve large bearing capacity and high limit speed through a relatively simple structure has become a technical problem to be solved by those skilled in the art. SUMMARY

[0003] Therefore, the present application provides a guide rail mechanism which achieves large bearing capacity and high limit speed through a relatively simple structure.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A guide rail mechanism, which is a rolling guide rail, comprises a rail body, a bearing platform and a rolling body, a plurality of first corrugated rings arranged along the axial direction of the rolling body are arranged on the circumferential surface of the rolling body, and the first corrugated rings are annular protrusions with the axis of the rolling body as the center.

[0006] The surface of the rail body in contact with the rolling body and the surface of the bearing platform in contact with the rolling body are both provided with a plurality of raceway grooves matched with the first corrugated rings, and the raceway grooves extend along the longitudinal direction of the rail body.

[0007] Optionally, in the above-mentioned guide rail mechanism, a gear is arranged on the rolling body, and the axis of the gear coincides with the axis of the rolling body.

[0008] At least one of the surface of the rail body in contact with the rolling body and the surface of the bearing platform in contact with the rolling body is provided with a rack engaged with the gear.

[0009] Optionally, in the above-mentioned guide rail mechanism, the tangent line at the contact point between the first corrugated ring near the position of the pressure surface of the rail body on both sides and the groove slope surface of the raceway groove forms an angle in the range of [0°, 90°] with the guide rail plane, which is smaller than the angle formed by the tangent line at the contact point between the first corrugated ring near the position of the pressure surface of the rail body in the middle and the groove slope surface of the raceway groove with the guide rail plane.

[0010] Optionally, in the guide rail mechanism, the bearing platform and the rail body are both arc-shaped, and the axes around which the arc-shaped bearing platform and rail body are curved are parallel to the rotation axis of the rolling body.

[0011] Optionally, in the guide rail mechanism, the rolling body is arranged on two or more surfaces of the rail body, and the first corrugated ring of the rolling body is simultaneously matched with the rolling groove on the rail body and the bearing platform.

[0012] Optionally, in the guide rail mechanism, one of the bearing platform and the rail body is a cylindrical structure, and the other is arranged in the cylindrical structure, so that the two form a nested structure.

[0013] Optionally, in the guide rail mechanism, the guide rail mechanism further comprises a vehicle body fixedly connected with the bearing platform and a constraint member mounted on the vehicle body, and the constraint member is located on the other side of the rail body relative to the bearing platform.

[0014] Optionally, in the guide rail mechanism, the surface of the constraint member is provided with a second corrugated ring, and the side of the rail body facing the constraint member is provided with a groove matched with the second corrugated ring, the second corrugated ring is a ring-shaped protrusion with the axis of the constraint member as the center, and the groove extends along the longitudinal direction of the rail body.

[0015] Optionally, in the guide rail mechanism, the rolling groove on the bearing platform forms a closed loop around the bearing platform or a part of the bearing platform, and a plurality of rolling bodies are arranged around the bearing platform and matched with the rolling groove on the bearing platform to roll in a closed loop; or

[0016] the rolling groove on the rail body forms a closed loop around the rail body or a part of the rail body, and a plurality of rolling bodies are arranged around the rail body and matched with the rolling groove on the rail body to roll in a closed loop.

[0017] Optionally, in the guide rail mechanism, the rail body has a bending section, the axis around which the bending section of the rail body is curved is referred to as axis X, the axis of the rolling body is referred to as axis Y, and the ratio of the distance from the contact point of the rolling body and the rail body to the axis X to the distance from the contact point to the axis Y is referred to as ratio B, when a certain rolling body is at any position of the bending section, the ratio B corresponding to all contact points of the rolling body and the rail body is equal.

[0018] Optionally, in the guide rail mechanism, grooves are respectively arranged on two or more surfaces of the rail body as the rolling groove on the rail body.

[0019] Optionally, in the guide rail mechanism, the first corrugated ring is in contact with the raceway groove at the bottom of the raceway groove, and the first corrugated ring is suspended.

[0020] Optionally, in the guide rail mechanism, the first corrugated ring is in point contact with the slope surface of the raceway groove.

[0021] Optionally, in the guide rail mechanism, the contact point of the first corrugated ring with the raceway groove is located on the slope surface of the raceway groove, the part of the profile line of the first corrugated ring corresponding to the slope surface is a circular arc, the profile line of the part of the slope surface cooperating with the first corrugated ring is a straight line, and each face of the raceway groove has a set of rolling bodies cooperating therewith.

[0022] A guide rail mechanism, which is a sliding guide rail, comprises a rail body and a support platform, and in a cross section, the surface of the rail body in contact with the support platform and the surface of the support platform in contact with the rail body are both wavy, and the corrugations of the two are in a dog-tooth occlusion manner.

[0023] A guide rail mechanism, which is a rolling guide rail, comprises a rail body, a support platform and rolling bodies, the rolling bodies are located on both sides of the rail body in the transverse direction;

[0024] A plurality of corrugated rings arranged along the axial direction of the rolling body are arranged on the circumferential surface of the rolling body, the corrugated ring is a ring-shaped protrusion with the axis of the rolling body as the center;

[0025] A plurality of grooves cooperating with the corrugated ring are arranged on both sides of the rail body in the transverse direction, the grooves extend along the longitudinal direction of the rail body;

[0026] The support platform is rotatably connected with the rolling body.

[0027] According to the above technical solutions, the guide rail mechanisms provided by the present invention include one rolling guide rail and the other sliding guide rail. The rolling guide rail is characterized in that a plurality of corrugated rings are provided on the circumferential surface of the rolling element and arranged along the axial direction of the rolling element. The corrugated rings are annular protrusions centered on the axis of the rolling element, and the rail body and / or the support are provided with grooves that cooperate with the corrugated rings, the grooves extending longitudinally along the rail body. Because the corrugated rings are located within the grooves, a series of snap-fit ​​connections are formed in the axial direction of the rolling element, thereby achieving a high lateral load-bearing capacity of the guide rail system. The sliding guide rail is characterized in that, in cross-section, the surface of the rail body that contacts the support and the surface of the support that contacts the rail body are both wavy. Because the corrugations of the two surfaces are in a canine-tooth-like interlocking pattern, a series of snap-fit ​​connections are also formed in the lateral direction of the rail body, thereby achieving a high lateral load-bearing capacity. In summary, the guide rail mechanism provided by the present invention achieves a large load-bearing capacity through a relatively simple structure. Due to its simple structure and high load-bearing capacity, the guide rail mechanism provided by the present invention is conducive to achieving a high limit speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of a guide rail mechanism provided in Example 1 of the present invention;

[0030] Figure 2 is a cross-sectional schematic diagram of the guide rail mechanism provided in the first embodiment of the present invention;

[0031] Figure 3 is with Figure 2 Schematic diagram of the corresponding parts explosion;

[0032] Figure 4 yes Figure 2 A three-dimensional schematic diagram of the middle rolling element 3;

[0033] Figure 5 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0034] Figure 6 is a three-dimensional schematic diagram of a guide rail mechanism provided in the second embodiment of the present invention;

[0035] Figure 7 is a front view of the guide rail mechanism provided in the second embodiment of the present invention;

[0036] Figure 8 yesFigure 7 Left view of;

[0037] Figure 9 yes Figure 6 A three-dimensional schematic diagram of the middle rolling element 3;

[0038] Figure 10 yes Figure 6 Front view of the middle rolling element 3;

[0039] Figure 11 yes Figure 10 Left view of;

[0040] Figure 12 is a three-dimensional schematic diagram of a guide rail mechanism provided in a third embodiment of the present invention;

[0041] Figure 13 is a cross-sectional schematic diagram of a guide rail mechanism provided in Example 3 of the present invention;

[0042] Figure 14 is a cross-sectional schematic diagram of a guide rail mechanism provided in a fourth embodiment of the present invention;

[0043] Figure 15 is a cross-sectional schematic diagram of a guide rail mechanism provided in a fifth embodiment of the present invention;

[0044] Figure 16 is a three-dimensional schematic diagram of a guide rail mechanism provided in Example 6 of the present invention;

[0045] Figure 17 is a front view of a guide rail mechanism provided in Example 6 of the present invention;

[0046] Figure 18 is a cross-sectional schematic diagram of a guide rail mechanism provided in Example 6 of the present invention;

[0047] Figure 19 yes Figure 16 A three-dimensional schematic diagram of the middle platform 2;

[0048] Figure 20 yes Figure 16 A schematic cross-sectional view of the middle platform 2;

[0049] Figure 21 is a three-dimensional schematic diagram of a guide rail mechanism provided in Example 7 of the present invention;

[0050] Figure 22 1 is a front view of a guide rail mechanism provided in Embodiment 7 of the present invention;

[0051] Figure 23 is a cross-sectional schematic diagram of a guide rail mechanism provided in Example 7 of the present invention;

[0052] Figure 24is a perspective view of the guide rail mechanism provided by Embodiment Eight of the present application;

[0053] Figure 25 is a cross-sectional view of the bearing platform 2 and the rolling body 3 in the guide rail mechanism provided by Embodiment Nine of the present application;

[0054] Figure 26 is a side view of the bearing platform 2 and the rolling body 3 in the guide rail mechanism provided by Embodiment Nine of the present application;

[0055] Figure 27 is a perspective view of the guide rail mechanism provided by Embodiment Ten of the present application;

[0056] Figure 28 is a cross-sectional view of the guide rail mechanism provided by Embodiment Ten of the present application;

[0057] Figure 29 is a corresponding exploded view of the parts; Figure 28

[0058] Figure 30 is a perspective view of the guide rail mechanism provided by Embodiment Eleven of the present application;

[0059] Figure 31 is a cross-sectional view of the bearing platform 2 and the rolling body 3 in the guide rail mechanism provided by Embodiment Twelve of the present application when the bearing platform 2 and the rolling body 3 are located at a curved segment of the rail body 1;

[0060] Figure 32 is a perspective view of the guide rail mechanism provided by Embodiment Thirteen of the present application;

[0061] Figure 33 is a cross-sectional view of the guide rail mechanism provided by Embodiment Thirteen of the present application;

[0062] Figure 34 is a perspective view of the guide rail mechanism provided by Embodiment Fourteen of the present application.

[0063] In the figure, the following are marked:

[0064] 1. Rail body; 101. Bearing surface; 102. Base mounting portion; 103. Groove; 104. Rack; 105. Slide channel;

[0065] 2. Bearing platform; 201. Bearing surface; 202. Load mounting portion; 203. Groove; 204. Rack; 205. Slide channel;

[0066] 3. Rolling body; 301. Corrugated ring; 302. End rod; 303. Gear; 304. Dumbbell rod;

[0067] 4. Retainer;

[0068] 5. Frame body; ​

[0069] 6. Restraints. DETAILED DESCRIPTION

[0070] To facilitate understanding, the present invention is further described below with reference to the accompanying drawings.

[0071] Example 1

[0072] See also Figures 1-5 , Figure 1 is a schematic diagram of a guide rail mechanism provided in Example 1 of the present invention, Figure 2 is a cross-sectional schematic diagram of the guide rail mechanism provided in the first embodiment of the present invention, Figure 3 is with Figure 2 The corresponding parts exploded diagram, Figure 4 yes Figure 2 A three-dimensional schematic diagram of the middle rolling element 3, Figure 5 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0073] The guide rail mechanism provided in the first embodiment of the present invention is a rolling guide rail, comprising a rail body 1, a support 2, and a rolling body 3. The circumferential surface of the rolling body 3 is provided with a plurality of corrugated rings 301 arranged along the axial direction of the rolling body 3. The corrugated rings 301 are annular protrusions centered on the axis of the rolling body 3.

[0074] The surface of the rail body 1 in contact with the rolling element 3 and the surface of the platform 2 in contact with the rolling element 3 are both provided with a plurality of grooves cooperating with the corrugated ring 301 , and the grooves extend in the longitudinal direction of the rail body 1 .

[0075] like Figure 1 As shown, the rolling element 3 is located between the rail body 1 and the support 2, the pressure-bearing surface 101 of the rail body 1 contacts the rolling element 3, and the pressure-bearing surface 201 of the support 2 contacts the rolling element 3. Figure 3 As shown, the pressure surface 101 is provided with a groove 103, and the pressure surface 201 is provided with a groove 203. After assembly, the corrugated ring 301 of the rolling element 3 is located in the groove 103 and the groove 203, as shown in FIG. Figure 2 As shown, the load is applied to the platform 2 and then transferred to the rail body 1 through the rolling element 3. Since the corrugated ring 301 is located in the groove, a series of snap-fits are formed in the axial direction of the rolling element 3, so the lateral load-bearing capacity of the rolling element 3 is higher, which is conducive to achieving a higher limit speed.

[0076] It is not difficult to understand that the rolling body 3 forms point contact with the rail body 1 using the corrugated ring 301. Therefore, compared with the conventional roller guide rail, the guide rail mechanism provided in Example 1 can achieve a higher maximum speed. At the same time, multiple corrugated rings 301 respectively form point contact with the rail body 1, increasing the force points. Therefore, compared with the conventional ball guide rail, the guide rail mechanism provided in Example 1 can achieve a higher positive bearing capacity.

[0077] In specific practical applications, the load can be an object installed on the support platform 2 through the load installation portion 202, or a force directly acting on the support platform 2. The support platform 2 can be a component for transportation, such as a trolley on a production line or an automatic assembly workshop, or a component on which a hook of a factory overhead traveling crane is supported, or various worktable surfaces, or a sliding block in a mechanical device, a vehicle system, an aerospace or a marine device.

[0078] The rail body 1 can be installed on a base through the base installation portion 102, where the base includes but is not limited to a machine, a vehicle, an aerospace or a marine device, a building, a construction tool (such as an overhead traveling crane), etc. The rail body 1 can also be directly constructed on the above-mentioned base, or can itself be a base directly placed on the ground.

[0079] As shown in Figure 4 , the two ends of the rolling body 3 are thinner end rods 302, which form a step with the middle part of the rolling body 3 to be clamped in the retainer 4. To prevent the rolling body 3 from falling out of the retainer 4, protrusions are provided on the end rods 302 to enhance the clamping effect.

[0080] It is worth pointing out that the rolling body 3 in the present application does not need to be provided with a corrugated ring 301 at every place where it contacts the rail body 1 and the support platform 2, but only needs to have a corrugated ring 301 at some places. For example, Figure 2 , the rolling body 3 has no corrugated ring 301 at the two ends where it contacts the rail body 1 and the support platform 2, but has a smooth shaft contact. The contact between the corrugated ring 301 and the groove 103 and the groove 203 is usually designed as point contact, and when a cylindrical region without the corrugated ring 301 is left on the rolling body 3, the contact between the cylindrical region and the rail body 1 and the support platform 2 is linear contact, which further improves the load bearing capacity of the rolling body 3.

[0081] As shown in Figure 5 , in specific practical applications, the part of the profile line of the corrugated ring 301 corresponding to the groove slope surface of the groove is generally a circular arc, and the profile line of the part of the corrugated ring 301 cooperating with the groove slope surface is generally a straight line. For example, the cross section of the groove is designed as a triangle or a trapezoid, and the contact point between the corrugated ring 301 and the groove is located on the groove slope surface. The included angle between the two groove slope surfaces of the groove can be 30°-150°, for example, 90°.

[0082] In fact, the profile lines of the corrugated ring and the profile lines of the groove slope surface can be variously selected, such as straight lines, circular arcs, elliptical arcs, involutes, parabolic lines, Gothic profile lines, or higher power function curves, and hyperbolic function curves with negative or fractional power function, and trigonometric function curves such as sine and cosine, and logarithmic function, exponential function, and other curves, and combination curves of these functions.

[0083] It is not difficult to understand that the tangent direction at the contact point between the corrugated ring of the rolling body and the groove slope surface greatly affects the distribution of the load capacity of the guide rail mechanism in the forward direction and the lateral direction. The "forward direction" is the normal direction of the guide rail plane, and the "lateral direction" is perpendicular to the normal of the guide rail plane.

[0084] When the tangent at the contact point between the corrugated ring and the groove slope surface is parallel to the guide rail plane (i.e. the tangent is parallel to the guide rail plane), the guide rail mechanism can only bear the forward force at the contact point; when the tangent is perpendicular to the guide rail plane, the guide rail mechanism can only bear the lateral force at the contact point; when the tangent is between 0° and 90°, the guide rail mechanism can bear both the forward force and the lateral force at the contact point, and the smaller the angle, the greater the forward force it can bear, and the smaller the lateral force it can bear.

[0085] In specific practical applications, the tangent of the corrugated ring located on both sides of the rail body pressure surface and the groove slope surface can be designed to have a small angle or zero angle with the guide rail plane, so that the angle between the tangent at the contact point between the corrugated ring and the groove slope surface near the two sides of the rail body pressure surface and the guide rail plane within the range of [0°, 90°] is smaller than the angle between the tangent at the contact point between the corrugated ring and the groove slope surface near the middle of the rail body pressure surface and the guide rail plane within the range of [0°, 90°], thereby more reasonably distributing the load capacity at each corrugated ring and improving the ability to resist the overturning moment. The "overturning moment" refers to the moment that tends to rotate the bearing platform around the longitudinal direction of the rail body (i.e. the overturning moment).

[0086] Embodiment Two

[0087] Referring to Figures 6-11 , Figure 6 is a perspective view of the guide rail mechanism provided in Embodiment Two of the present application, Figure 7 is a front view of the guide rail mechanism provided in Embodiment Two of the present application, Figure 8 is Figure 7 a left view of Figure 9 is Figure 6 a perspective view of the rolling body 3 in Figure 10 is Figure 6 a front view of the rolling body 3 inFigure 11 is Figure 10 a left view.

[0088] The main difference between embodiment two and embodiment one is that in embodiment one, the cage 4 is used to keep the relative position between the rolling bodies 3 unchanged, while in embodiment two, the relative position between the rolling bodies 3 is kept unchanged by improving the structure of the rolling bodies 3, so the cage 4 can be omitted.

[0089] In embodiment two, the rolling bodies 3 are provided with gears 303, the axes of the gears 303 coincide with the axes of the rolling bodies 3, and at least one of the surfaces of the rail body 1 and the bearing platform 2 that are in contact with the rolling bodies 3 is provided with a rack that is engaged with the gears 303.

[0090] As shown in Figure 6 , the gears 303 are arranged at both ends of the rolling bodies 3, the rail body 1 is provided with a rack 104, the bearing platform 2 is provided with a rack 204, and the gears 303 on the rolling bodies 3 are engaged with the rack 104 and the rack 204 at the same time, so that the movement of the rolling bodies 3 at both ends is constrained, becomes accurate, has the ability to resist the in-plane torque, avoids the torsion of the rolling bodies 3 caused by the in-plane torque load, reduces the friction caused by the torsion of the rolling bodies 3, improves the service life of the guide rail mechanism, and improves the limit speed of the guide rail.

[0091] Embodiment three

[0092] Although the main function of the guide rail mechanism is to bear the pressure that presses the bearing platform 2 and the rail body 1, in actual work, the pulling force that tends to separate the two is also difficult to avoid, at which time the separation between the bearing platform 2 and the rail body 1, i.e., derailment, may occur. The main difference between embodiment three and embodiment one is that a derailment prevention measure is added.

[0093] Referring to Figure 12 and Figure 13 , Figure 12 is a perspective view of the guide rail mechanism provided by embodiment three of the present application, Figure 13 is a cross-sectional view of the guide rail mechanism provided by embodiment three of the present application.

[0094] In embodiment three, the bearing platform 2 and the rolling bodies 3 are located above the rail body 1, the guide rail mechanism further comprises a vehicle frame body 5 located on both sides of the rail body 1 and a constraint member 6 located below the rail body 1, the upper part of the vehicle frame body 5 is fixedly connected with the bearing platform 2, and the two ends of the constraint member 6 are rotatably connected with the lower part of the vehicle frame body 5.

[0095] Once there is a force that separates the bearing platform 2 and the rail body 1 along the direction perpendicular to the guide rail bearing surface, the vehicle frame body 5 and the constraint member 6 can constrain the bearing platform 2 to avoid its separation from the rail body 1.

[0096] In a specific practical application, the surface of the constraint member 6 can be provided with a corrugated ring, and a groove that cooperates with the corrugated ring on the constraint member 6 is provided on the side of the rail body 1 that faces the constraint member 6. For example, the structure of the constraint member 6 can adopt the same structure as the rolling body 3, and correspondingly, the structure of the lower surface of the rail body 1 should be the same as the structure of the upper surface of the rail body 1. Of course, the corrugated ring of the constraint member 6 can also be designed to be different in size from the corrugated ring of the rolling body 3.

[0097] In addition, in other embodiments, the constraint member 6 can also be designed to be fixedly connected with the frame body 5, in which case the constraint member 6 slides on the surface of the rail body 1, i.e., the two are in sliding connection.

[0098] In Figure 12 and Figure 13 embodiments, the constraint member 6 is a rolling body with a corrugated ring. It should be understood that although the constraint member 6 in Figure 12 and Figure 13 is provided on the other side surface of the rail body 1 opposite the rolling body 3, in practical applications, the constraint member 6 and the rolling body 3 can be respectively provided on two opposite surfaces of the rail body 1, or on two adjacent surfaces of the rail body 1, as long as the corrugated rings of the two can form a self-locking condition with the grooves of the rail body 1, i.e., they do not fall off. The so-called self-locking condition refers to natural locking on the rail body 1, which can only move in the extension direction of the rail body 1, and cannot rotate or move in other directions.

[0099] Embodiment Four

[0100] Embodiment Four provides another anti-derailing measure. As shown in Figure 14 , the bearing platform 2 is a cylindrical structure that is sleeved on the rail body 1, and the upper surface and the lower surface of the rail body 1 are both provided with grooves, and the upper and lower sides of the rail body 1 are both provided with rolling bodies 3.

[0101] Embodiment Five

[0102] As shown in Figure 15 , Embodiment Five also provides an anti-derailing measure, which is different from Embodiment Four in that the bearing platform 2 in Embodiment Four encloses the rail body 1, while the bearing platform 2 in Embodiment Five semi-encloses the rail body 1.

[0103] As shown in Figure 15 , in Embodiment Five, the bearing platform 2 and the rolling body 3 are located above the rail body 1, and the cross section of the rail body 1 is H-shaped, the bearing platform 2 has two constraint arms that extend downward, the constraint arms and the rail body 1 form a wedge-type engagement structure, and the constraint member 6 is provided between the constraint arms and the rail body 1.

[0104] Embodiment Six

[0105] As shown in Figures 16-20, Figure 16 is a perspective view of the guide rail mechanism provided by the sixth embodiment of the present application, Figure 17 is a front view of the guide rail mechanism provided by the sixth embodiment of the present application, Figure 18 is a cross-sectional view of the guide rail mechanism provided by the sixth embodiment of the present application, Figure 19 is Figure 16 is a perspective view of the supporting platform 2, Figure 20 is Figure 16 is a cross-sectional view of the supporting platform 2.

[0106] The sixth embodiment mainly provides a mode that enables the rolling body 3 to perform a closed-loop movement around the supporting platform 2, so that the supporting platform 2 can perform a reciprocating movement at any distance on the rail body 1.

[0107] In the sixth embodiment, the groove on the supporting platform 2 forms a closed loop around the supporting platform 2, as shown in Figure 19 . Meanwhile, a plurality of rolling bodies 3 are connected by a retainer 4 to form a flexible chain ring on the supporting platform 2, as shown in Figure 17 . The supporting platform 2, the rolling body 3 and the retainer 4 actually constitute a so-called “rolling guide block”, and since the rolling body 3 in the rolling guide block is provided with a corrugated ring, the rolling guide block can be called a “corrugated roller guide block”. The rolling body 3 is a link of the flexible chain ring. The retainer 4 as a chain of the flexible chain ring should adopt a flexible continuous structure, which can be a spring steel belt or a belt-shaped continuous structure made of a high polymer material (such as polytetrafluoroethylene, nylon, etc.).

[0108] It should be understood that in other embodiments, the “rolling guide block” can also adopt other structural forms, for example, the two ends of the rolling body 3 can be designed in a stepped shape, and a side cover with an annular groove is used to limit the rolling body 3 to be close to the supporting platform 2. The side cover is fixedly connected to the two sides of the supporting platform 2, and the two ends of the rolling body 3 in the stepped shape are located in the annular groove of the side cover, and the rolling body 3 can roll. In this way, the supporting platform 2, the rolling body 3 and the side cover constitute a so-called “rolling guide block”.

[0109] As shown in Figure 19 , the groove on the supporting platform 2 forms a closed-loop raceway groove on the outer surface of the supporting platform 2. It should be understood that in other embodiments, the closed-loop raceway groove formed by the groove on the supporting platform 2 can only have a part exposed on the surface of the supporting platform 2 close to the rail body 1, and the other part hidden inside the supporting platform 2, that is, a part of the closed-loop raceway groove passes through the inside of the supporting platform 2. In this structure, the raceway groove on the supporting platform 2 no longer surrounds the supporting platform 2, but forms a closed loop around a part of the supporting platform 2.

[0110] Similar to the arrangement of the track groove on the bearing platform 2 in the embodiment six, the track groove on the track body 1 can also be designed as a closed-loop track groove around the track body 1, so that a plurality of rolling bodies 3 can be arranged around the track body 1 and cooperate with the closed-loop track groove on the track body 1 to roll.

[0111] Embodiment seven

[0112] Referring to Figures 21-23 , Figure 21 is a perspective view of the guide rail mechanism provided by the embodiment seven of the present application, Figure 22 is a front view of the guide rail mechanism provided by the embodiment seven of the present application, Figure 23 is a cross-sectional view of the guide rail mechanism provided by the embodiment seven of the present application.

[0113] The embodiment seven is a combination of the embodiment three and the embodiment six, that is, in the guide rail mechanism provided by the embodiment seven, both the anti-derailing measures provided by the embodiment three and the mode of the rolling bodies 3 moving in a closed loop around the bearing platform 2 provided by the embodiment six are adopted, and the specific structure can be referred to the description of the embodiment three and the embodiment six, which will not be described here.

[0114] Embodiment eight

[0115] Referring to Figure 24 , Figure 24 is a perspective view of the guide rail mechanism provided by the embodiment eight of the present application. The embodiment eight is an improvement on the basis of the embodiment seven, and by comparing Figure 21 and Figure 24 it can be seen that the embodiment eight replaces the constraint member 6 in the embodiment seven with the bearing platform 2 and the flexible link ring (the flexible link ring is formed by a plurality of rolling bodies 3 connected by the retainer 4) sleeved on the bearing platform 2.

[0116] As can be seen from Figure 24 , the track body 1 has two surfaces on which the grooves cooperating with the rolling bodies 3 are arranged, and in actual application, the two surfaces can be the upper and lower surfaces perpendicular to the bearing direction (for example, the embodiment eight shown in Figure 24 ), or the two side surfaces in the left-right direction (for example, the embodiments thirteen shown in Figure 32 and Figure 33 ), that is, the axis of the rolling body 3 can be arranged horizontally or vertically in actual application.

[0117] It should be understood that although Figure 24The two surfaces of the rail body 1 with grooves in the rail body 1 are two opposite surfaces of the rail body 1, but in actual application, the two surfaces with grooves can be two adjacent surfaces of the rail body 1, as long as the grooves of the two surfaces and the corrugated ring of the rolling body 3 can form a self-locking condition and cannot fall off.

[0118] In addition, although Figure 24 Only two surfaces of the rail body 1 are in contact with the rolling body 3 in the rail body 1, but in actual application, more surfaces of the rail body 1 can be in contact with the rolling body 3, even all the surfaces around the rail body 1 are in contact with the rolling body 3, that is, two or more surfaces of the rail body 1 are provided with grooves as the rolling groove of the rail body 1, and each surface of the rolling groove has a group of rolling bodies 3 matched therewith.

[0119] Embodiment nine

[0120] Referring to Figure 25 and Figure 26 , Figure 25 is a cross-sectional view of the bearing platform 2 and the rolling body 3 in the guide rail mechanism provided by the ninth embodiment of the present application, Figure 26 is a side view of the bearing platform 2 and the rolling body 3 in the guide rail mechanism provided by the ninth embodiment of the present application.

[0121] The ninth embodiment mainly provides a specific way of forming a flexible link ring by the rolling body 3, as shown in Figure 25 The rolling body 3 is dumbbell-shaped, the middle part of the rolling body 3 is a dumbbell rod 304, and the retainer 4 is a spring steel sheet, which can be arranged in the middle part of the rolling body 3.

[0122] Embodiment ten

[0123] Referring to Figures 27-29 , Figure 27 is a three-dimensional view of the guide rail mechanism provided by the tenth embodiment of the present application, Figure 28 is a cross-sectional view of the guide rail mechanism provided by the tenth embodiment of the present application, Figure 29 is a corresponding exploded view of Figure 28 .

[0124] The guide rail mechanism provided by the tenth embodiment of the present application is a sliding guide rail, which comprises a rail body 1 and a bearing platform 2, and in the cross section, the surface of the rail body 1 in contact with the bearing platform 2 and the surface of the bearing platform 2 in contact with the rail body 1 are both wave-shaped, and the corrugations of the two are in the form of dog teeth occlusion.

[0125] As Figure 29The upper surface of the rail body 1 is provided with a sliding groove 105, and the lower surface of the bearing platform 2 is provided with a sliding groove 205. After being assembled together, the sliding groove 105 and the sliding groove 205 are engaged in a staggered manner, as shown in Figure 28 . Since the sliding groove 105 and the sliding groove 205 form a series of clamping in the lateral direction of the rail body 1, the lateral bearing capacity of the guide rail mechanism is high, which is beneficial to achieve a high limit speed. Moreover, compared with the existing V-shaped cross-section sliding guide rail, the guide rail mechanism provided by the embodiment ten can have a smaller cross-section height under the premise of meeting the same bearing capacity, which is conducive to the miniaturization of equipment.

[0126] Embodiment eleven

[0127] Referring to Figure 30 , the guide rail mechanism provided by the embodiment eleven of the present application is a rolling guide rail, which comprises a rail body 1, a bearing platform 2 and a rolling body 3. The rolling body 3 is located on both sides of the rail body 1 in the transverse direction, and the bearing platform 2 is rotatably connected with the rolling body 3. The circumferential surface of the rolling body 3 is provided with a plurality of corrugated rings 301 arranged in the axial direction of the rolling body 3. The corrugated ring 301 is a ring-shaped protrusion with the axis of the rolling body 3 as the center. The lateral sides of the rail body 1 are each provided with a plurality of grooves matched with the corrugated rings 301, and the grooves extend along the longitudinal direction of the rail body 1.

[0128] As can be seen from Figure 30 , the guide rail mechanism provided by the embodiment eleven belongs to a kind of annular planar guide rails. The pressure bearing surface of the rail body 1 is on the inner side and the outer side of the ring. The axis of the rolling body 3 is vertically arranged. The corrugated ring 301 of the rolling body 3 rolls along the groove of the rail body 1. The bearing platform 2 moves on the ring end surface of the rail body 1. Of course, in other embodiments, the rail body 1 can also be designed as a non-closed type.

[0129] Embodiment twelve

[0130] The embodiment twelve mainly provides a specific way to improve the turning ability. In the embodiment twelve, the rail body 1 has a turning section. The perspective view, front view and cross-sectional view of the flat section of the guide rail mechanism provided by the embodiment twelve are similar to those of the embodiment seven. For details, please refer to Figures 21-23 .

[0131] In the guide rail mechanism provided by the embodiment twelve, the cross-section of the bearing platform 2 and the rolling body 3 when located on the turning section of the rail body 1 is as shown in Figure 31 . In the flat section of the rail body 1, the profile lines of the grooves are the same, while in the turning section of the rail body 1, the profile lines of the grooves are different. The purpose is to make the contact points of the groove slope surface and the rolling body 3 meet the following anti-slip requirements:

[0132] The axis around which the curved section of the rail body 1 extends is called axis X, the axis of the rolling body 3 is called axis Y, any contact point between the rail body 1 and the rolling body 3 in the cross section is taken, the distance from the contact point to the axis X is called distance M, the distance from the contact point to the axis Y is called distance N, and the ratio of the distance M to the distance N is called ratio B. When a certain rolling body 3 is at any position in the curved section, the ratio B corresponding to all the contact points between the rolling body 3 and the rail body 1 is equal.

[0133] Compared with the conventional roller guide rail system, the guide rail mechanism provided in the twelfth embodiment has the pure rolling curved section capability, i.e. when the rolling body 3 is in the curved section, the rolling body 3 makes pure rolling motion on the rail body 1 and does not slip.

[0134] Similarly, in order to avoid the constraint member 6 from slipping, the grooves of the rail body 1 that cooperate with the constraint member 6 also have different profile shapes in the curved section, so that the contact points between the rail body 1 and the constraint member 6 satisfy the following anti-slip requirements: the axis of the constraint member 6 is called axis Z, the ratio of the distance from the contact point to the axis X to the distance from the contact point to the axis Z is called ratio C, and when a certain constraint member 6 is at any position in the curved section, the ratio C corresponding to all the contact points between the constraint member 6 and the rail body 1 is equal.

[0135] The thirteenth embodiment

[0136] Referring to Figure 32 and Figure 33 , Figure 32 is a perspective view of the guide rail mechanism provided in the thirteenth embodiment of the present application, Figure 33 is a cross-sectional view of the guide rail mechanism provided in the thirteenth embodiment of the present application.

[0137] The thirteenth embodiment is different from the eighth embodiment (see Figure 24 ) in that in the thirteenth embodiment, the two faces of the rail body 1 on which the raceway grooves are formed are not the upper and lower surfaces perpendicular to the bearing direction, but the two side surfaces in the left and right directions. In addition, the thirteenth embodiment does not have the vehicle frame body 5 as in the eighth embodiment, but the support platform 2 is designed as a whole structure in the shape of a cylinder (or U shape), and a part of the support platform 2 itself is used as the vehicle frame body. Obviously, if an additional separate vehicle frame body is provided to connect the two sets of flexible chain links cooperating with the support platform 2, it is also within the protection scope of the present application.

[0138] The fourteenth embodiment

[0139] On the basis of the first embodiment, the fourteenth embodiment mainly provides an arc-shaped guide rail, as Figure 34As shown, the bearing platform 2 and the rail body 1 are both arc-shaped, which means that the pressure bearing surfaces of the two are coupled in an arc shape. The bearing platform 2 and the rail body 1 have a rolling body 3 therebetween. The axis around which the arc-shaped bearing platform 2 and the rail body 1 are curved is parallel to the rotation axis of the rolling body 3. There are rolling groove on the pressure bearing surfaces of the bearing platform 2 and the rail body 1, which are matched with the corrugated ring on the rolling body 3.

[0140] The arc-shaped guide rail is widely used in the fields of precision instruments, precision machine tools, medical equipment, etc. It can precisely and stably control the rotation angle. It should be noted that, for the convenience of drawing, Figure 34 The retainer is omitted.

[0141] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guide rail mechanism, the guide rail mechanism being a rolling guide rail, comprising a rail body (1), a support platform (2) and a rolling body (3), characterized in that: A plurality of first corrugated rings (301) arranged along the axial direction of the rolling body (3) are provided on the circumferential surface of the rolling body (3), wherein the first corrugated rings (301) are annular protrusions centered on the axis of the rolling body (3); The surface of the rail body (1) in contact with the rolling body (3) and the surface of the support platform (2) in contact with the rolling body (3) are both provided with a plurality of rolling grooves cooperating with the first corrugated ring (301), and the rolling grooves extend in the longitudinal direction of the rail body (1); The rail body (1) has a turning section, the axis around which the turning section of the rail body (1) bends and extends is called axis X, the axis of the rolling body (3) is called axis Y, the ratio of the distance from the contact point of the rolling body (3) with the rail body (1) to the axis X to the distance from the contact point to the axis Y is called ratio B, and when a certain rolling body (3) is at any position in the turning section, the ratio B corresponding to all contact points of the rolling body (3) with the rail body (1) is equal; The load is mounted on the support platform (2) via the load mounting portion (202).

2. The guide rail mechanism according to claim 1, characterized in that: A gear (303) is provided on the rolling body (3), and the axis of the gear (303) coincides with the axis of the rolling body (3); At least one of the surface of the rail body (1) in contact with the rolling body (3) and the surface of the support platform (2) in contact with the rolling body (3) is provided with a rack meshing with the gear (303).

3. The guide rail mechanism according to claim 1, wherein: The angle between the tangent line at the contact point between the first corrugated ring (301) and the groove slope of the raceway groove at the positions near both sides of the pressure-bearing surface of the rail body (1) and the guide rail plane within the range of [0°, 90°] is smaller than the angle between the tangent line at the contact point between the first corrugated ring (301) and the groove slope of the raceway groove at the position near the middle of the pressure-bearing surface of the rail body (1) and the guide rail plane within the range of [0°, 90°].

4. The guide rail mechanism according to claim 1, wherein: The support platform (2) and the rail body (1) are both arc-shaped, and the axis around which the arcs of the support platform (2) and the rail body (1) are bent is parallel to the rotation axis of the rolling body (3).

5. The guide rail mechanism according to claim 1, wherein: The rolling bodies (3) are provided on two or more surfaces of the rail body (1), and the first corrugated ring of the rolling body (3) is matched with the raceway grooves on the rail body (1) and the support platform (2) at the same time.

6. The guide rail mechanism according to claim 1, characterized in that: The raceway groove on the support platform (2) forms a closed loop around the support platform (2) or a part of the support platform (2), and a plurality of rolling bodies (3) are arranged around the support platform (2) and cooperate with the raceway groove on the support platform (2) to roll in a closed loop; or The raceway groove on the rail body (1) forms a closed loop around the rail body (1) or a portion of the rail body (1); a plurality of rolling bodies (3) are arranged around the rail body (1) and cooperate with the raceway groove on the rail body (1) to perform closed loop rolling; The load is mounted on the support platform (2) via the load mounting portion (202).

7. The guide rail mechanism according to claim 6, characterized in that: Grooves are respectively provided on two or more surfaces of the rail body (1) as the rolling grooves on the rail body (1), and the rolling grooves on each surface have a group of rolling bodies (3) cooperating therewith.

8. A guide rail mechanism, the guide rail mechanism being a rolling guide rail, comprising a rail body (1), a support platform (2) and a rolling body (3), characterized in that: The rolling bodies (3) are located on both sides of the rail body (1) in the transverse direction; A plurality of corrugated rings (301) arranged along the axial direction of the rolling body (3) are provided on the circumferential surface of the rolling body (3), and the corrugated rings (301) are annular protrusions centered on the axis of the rolling body (3); A plurality of grooves cooperating with the corrugated ring (301) are provided on both sides of the rail body (1) in the transverse direction, the grooves extending in the longitudinal direction of the rail body (1), and the pressure-bearing surfaces of the rail body (1) are located on the inner side and the outer side of the ring; The support platform (2) and the rolling body (3) are rotatably connected; The rail body (1) has a turning section, the axis around which the turning section of the rail body (1) bends and extends is axis X, the axis of the rolling body (3) is axis Y, and at any contact point between the rail body (1) and the rolling body (3) in the cross section, the distance from the contact point to axis X is called distance M, the distance from the contact point to axis Y is called distance N, and the ratio of distance M to distance N is called ratio B. When a certain rolling body (3) is at any position in the turning section, the ratios B corresponding to all contact points between the rolling body (3) and the rail body (1) are equal.

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