Compound screw slide

Abstract

A composite screw slide comprises two body hardened rails, a screw, and a slide unit. The slide unit comprises a slide body, two slide hardened rails, two circulating track members, and two chain belts. The slide body is made of a first material and has a drive hole for the screw to pass through, and two slide track grooves with openings facing the body hardened rails respectively. The slide hardened rails are made of a second material with a harderness higher than the first material and are fixed to the slide track grooves respectively. The present invention improves the smoothness of the actuation by adopting the chain belts and the circulating track members, and saves costs by adopting different materials for the slide body and the slide hardened rails and the circulating track members are arranged on the slide body by injection molding. In addition, since the hardness of the second material is higher than that of the first material, the service life can be increased.

Description

Technical Field

[0001] The present invention relates to an automation device, in particular to a composite screw slide. Background Art

[0002] With technological advancements, various processing methods are becoming increasingly automated. Slides are often used in automated equipment to perform a variety of tasks, such as feeding, cutting, milling, washing, and aligning. Furthermore, the performance of a slide directly impacts the range of tasks it can perform. Slides with high precision and smooth movement are suitable for tasks requiring precise control. Conversely, slides with low precision and unstable movement are subject to numerous limitations and are difficult to apply. Therefore, improving precision and smoothness has become a competitive goal in slide design and manufacturing. Furthermore, considering equipment costs, products that offer the best value for money and a long service life are naturally more likely to attract consumers. Summary of the Invention

[0003] The object of the present invention is to provide a composite screw slide that operates smoothly, saves costs and increases service life.

[0004] The composite screw slide of the present invention comprises two body hardened rails, a screw, and a slide unit.

[0005] The hardened rails extend along the sliding axis and are parallel to and spaced from each other. The screw extends along the sliding axis and is located between the hardened rails. The slide unit includes a slide body, two hardened slide rails, two circulating track members, and two chain belts.

[0006] The slide body is made of a first material and has a drive hole for the screw to pass through, two slide track grooves respectively arranged on two opposite sides and with openings facing the body hardened rail, and two inner circulation holes respectively arranged between the slide track grooves and the drive holes. The slide hardened rail is made of a second material with a hardness higher than that of the first material and is fixed to the slide track groove. The circulation track member is arranged on the slide body by injection molding. Each circulation track member has an outer circulation section arranged along the slide track groove but not covering the slide hardened rail, an inner circulation section arranged along the inner circulation hole, and two ball return sections connected between the outer circulation section and the inner circulation section and respectively located at two opposite ends. The chain belts are respectively arranged around the circulation track members. Each chain belt has a plurality of balls, a plurality of spacers arranged between the balls, and a plurality of connecting parts connected between the spacers and for the balls to be embedded. Each chain belt circulates sequentially along its outer loop section, one of its ball return sections, its inner loop section, and the other of its ball return sections. The balls circling its outer loop section slide and roll against the corresponding hardened rails of the body and the slide.

[0007] The composite screw slide of the present invention further includes a body base. The body base includes two end pieces spaced apart from each other along the slide axis, and a body piece connected between the end pieces and extending along the slide axis. The end pieces and the body piece together define a body space with an upward opening. The body hardened rail is mounted on the body base and disposed within the body space. The body hardened rail is connected between the end pieces. The screw is connected between the end pieces.

[0008] The composite screw slide of the present invention further comprises a top cover arranged on the top side of the slide body.

[0009] In the composite screw slide of the present invention, the first material used for the slide body of the slide unit is aluminum, the second material used for the slide hardened rail is steel, and the circulating track member is made of plastic.

[0010] In the composite screw slide of the present invention, the slide body of the slide unit is manufactured using an aluminum profile process.

[0011] In the composite screw slide of the present invention, the outer circulation section of each circulating track member has an upper abutment portion adjacent to the upper side of the respective slide track groove and for the connection portion of the respective chain belt to abut upward, and a lower abutment portion adjacent to the lower side of the respective slide track groove and for the connection portion of the respective chain belt to abut downward.

[0012] In the composite screw slide of the present invention, the inner circulation section of each circulating track member is tubular and has an oil injection hole provided on its top side and extending through its inner and outer sides. The slide body of the slide unit has two oil injection channels, each connected to the oil injection hole and extending from the inner circulation hole to its top side.

[0013] The slide unit of the composite screw slide of the present invention further includes four external circulators respectively covering the ball return sections to prevent the balls from falling from the chain belt.

[0014] In the composite screw slide of the present invention, the intersection between each slide hardening rail of the slide unit and the corresponding ball return section is chamfered to be smooth.

[0015] In the composite screw slide of the present invention, each hardened slide rail of the slide unit has two first chamfered surfaces adjacent to the corresponding ball return sections. Each ball return section has a second chamfered surface adjacent to its respective hardened slide rail. The adjacent first and second chamfered surfaces together form a smooth curved surface.

[0016] The present invention has the following advantages: the use of the chain belt and the circulating track improves the smoothness of the movement, and the use of different materials for the slide body and the slide hardened rail, with the circulating track being incorporated into the slide body by injection molding, reduces costs. Furthermore, the second material is harder than the first material, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional combined diagram of an embodiment of the composite screw slide of the present invention;

[0018] Figure 2 It is a partial exploded perspective view of this embodiment;

[0019] Figure 3 is a top view of a body base, two body hardened rails, a screw and a slide unit of this embodiment;

[0020] Figure 4 It is along Figure 3 The cross-sectional view obtained along the line IV-IV in FIG.

[0021] Figure 5 is a front view of the body hardened rail, the screw and the slide unit of this embodiment;

[0022] Figure 6 It is along Figure 5 A cross-sectional view obtained along line VI-VI in FIG.

[0023] Figure 7 is a perspective view of a circulating track member of this embodiment;

[0024] Figure 8 is a three-dimensional view of the circulating track member of the embodiment from another perspective;

[0025] Figure 9 1 is a schematic diagram of a partial structure of a chain belt of this embodiment;

[0026] Figure 10 It is an incomplete three-dimensional combination diagram of a slide body, a slide hardening rail and another circulating track member of this embodiment. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] See Figure 1 and Figure 2 An embodiment of the composite screw slide of the present invention includes a body base 1, two body hardened rails 2, a screw 3, a slide unit 4, and a top cover 5.

[0029] The body base 1 includes two end pieces 11 spaced apart from each other along the sliding axis X, and a body piece 12 connected between the end pieces 11 and extending along the sliding axis X. The end pieces 11 and the body piece 12 together define a body space 13 with an upward opening. The body hardened rail 2 is mounted on the body base 1 and disposed within the body space 13. The body hardened rail 2 extends along the sliding axis X and connects between the end pieces 11, parallel to each other and spaced apart from each other. The screw 3 extends along the sliding axis X and connects between the end pieces 11 and is located between the body hardened rails 2.

[0030] See Figure 3 and Figure 4 The slide unit 4 includes a slide body 41, two slide hardened rails 42, two circulating track members 43, two chain belts 44, four external circulators 45, and four external circulator cover plates 46.

[0031] The slide body 41 is manufactured from a first material and has a drive hole 411 for the screw 3 to pass through, two slide track grooves 412 disposed on opposite sides and opening toward the hardened rail 2 of the body, two internal circulation holes 413 disposed between the slide track grooves 412 and the drive hole 411, and two oil injection channels 414. Specifically, in this embodiment, the first material is aluminum, and the slide body 41 is manufactured using an aluminum extrusion process.

[0032] The slide hardened rails 42 are made of a second material having a higher hardness than the first material and are fixed to the slide track grooves 412. Specifically, in this embodiment, the second material is steel, and the slide hardened rails 42 are fixed to the slide track grooves 412 using green glue (a type of oxygen-deficient glue).

[0033] It is particularly important to note that, given the same volume, aluminum is cheaper than steel, but steel is more resistant to wear. Therefore, using aluminum for the slide body 41 effectively reduces overall material costs, while using the hardened slide rail 42 in the slide track groove 412 effectively resists wear, prevents deformation, and increases service life.

[0034] The circulating track member 43 is made of plastic and is disposed on the slide body 41 by injection molding. Figures 5 to 8 Each circulation track member 43 has an outer circulation section 431 arranged along the slide track groove 412 but not covering the slide hardened rail 42, an inner circulation section 432 arranged along the inner circulation hole 413, and two ball return sections 433 connected between the outer circulation section 431 and the inner circulation section 432 and located at two opposite ends.

[0035] The outer circulation section 431 of each circulating track member 43 has an upper abutment portion 434 adjacent to the upper side of the respective slide track groove 412, and a lower abutment portion 435 adjacent to the lower side of the respective slide track groove 412. The inner circulation section 432 of each circulating track member 43 is tubular and has an oil injection hole 436 arranged on its own top side and running through its own inside and outside. The oil injection channel 414 of the slide body 41 is respectively connected to the oil injection hole 436 and is passed through to the top side of itself by the inner circulation hole 413. In this way, the lubricating oil injected into the oil injection channel 414 from the top side of the slide body 41 can flow into the inner circulation section 432 through the oil injection hole 436.

[0036] See Figure 4 、 Figure 6 and Figure 9, the chain belts 44 are respectively arranged around the circulating track members 43. Each chain belt 44 has a plurality of balls 441, a plurality of spacers 442 arranged between the balls 441, and a plurality of connecting parts 443 connected between the spacers 442 and for the balls 441 to be embedded. Each chain belt 44 can sequentially circulate along its own outer circulation section 431, one of its own ball return sections 433, its own inner circulation section 432, and another of its own ball return sections 433. Among them, the balls 441 circling around their own outer circulation sections 431 will lean against the corresponding body hardened rail 2 and the slide hardened rail 42 and slide and roll under force. The connecting parts 443 circling around their own outer circulation sections 431 lean against between their own upper abutting parts 434 and lower abutting parts 435. That is, the top connecting portion 443 abuts upward against the respective upper abutting portion 434, and the bottom connecting portion 443 abuts downward against the lower abutting portion 435. In this way, the circulating track member 43 can keep the chain belt 44 in a certain position when passing through the outer circulating section 431 without affecting the sliding and rolling of the balls 441.

[0037] It is important to note that when the chain belt 44 circulates in the outer circulation section 431, it is simultaneously subjected to the forces of the main body hardened rail 2 and the slide hardened rail 42, causing it to be relatively tight. Comparatively, when the chain belt 44 circulates in the inner circulation section 432, it is relatively loose. Therefore, when the chain belt 44 circulates in the inner circulation section 432, it is more suitable for the lubricating oil to adhere to the chain belt 44 and produce a better lubrication effect. Furthermore, according to the movement pattern of the chain belt 44's circulation, the chain belt 44 has already circumnavigated a distance in the inner circulation section 432 before reaching the outer circulation section 431, which helps to even out the lubricating oil and further enhances the lubrication effect.

[0038] See Figure 2 、 Figure 3 and Figure 6 The outer circulator 45 is respectively covered on the ball return section 433 to prevent the balls 441 from falling from the chain belt 44. The outer circulator cover 46 is respectively provided on the side of the outer circulator 45 opposite to the ball return section 433. Figure 1 and Figure 2 The top cover 5 is disposed on the top side of the slide body 41 .

[0039] See Figure 10, the intersection of each slide hardening rail 42 of the slide unit 4 and the corresponding ball return section 433 is chamfered and smooth. In detail, each slide hardening rail 42 of the slide unit 4 has two first chamfered surfaces 421 adjacent to the corresponding ball return section 433. Each ball return section 433 has a second chamfered surface 437 adjacent to its respective slide hardening rail 42. The adjacent first chamfered surfaces 421 and the second chamfered surfaces 437 together form a smooth curved surface. In this way, when the ball 441 passes through the intersection of the slide hardening rail 42 and the ball return section 433, it will not get stuck due to the differences between the components, thereby improving the smoothness of the operation.

[0040] It should be particularly emphasized that in this embodiment, the slide body 41, the slide hardened rail 42 and the circulating track member 43 are a composite design deliberately made of different materials, which can provide appropriate material properties for various functions. Since the slide body 41 serves as the main structure and occupies a large volume, the use of aluminum can not only reduce the overall weight but also save material costs. Since the slide hardened rail 42 must bear the load, the use of steel can resist wear and is not easy to deform. Since the circulating track member 43 must guide the chain belt 44, resulting in a more complex structure, the use of plastic and injection molding can effectively reduce processing costs and material costs.

[0041] In summary, the composite screw slide of the present invention improves smoothness of operation by employing the chain belt 44 and the circulating track 43. Furthermore, by using different materials for the slide body 41 and the slide hardened rail 42, and by using injection molding to attach the circulating track 43 to the slide body 41, costs are reduced. Furthermore, because the second material is harder than the first, its service life is increased, thereby effectively achieving the objectives of the present invention.

Claims

1. A composite screw slide, comprising two body-hardened rails, a screw, and a slide unit, characterized in that: The body hardened rails extend along the sliding axis, and the body hardened rails are parallel to each other and spaced apart from each other; The screw extends along the sliding axis and is located between the hardened rails of the body; 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The wheelchair accessible by the driver is adapted to engage the guide rails, wherein the guide rails are adapted to engage the guide rails, wherein the guide rails are adapted to engage the guide rails.

2. The composite screw slide according to claim 1, characterized in that: It also includes a body base, which includes two end pieces spaced apart from each other along the sliding axis, and a body piece connected between the end pieces and extending along the sliding axis, the end pieces and the body piece jointly define a body space with an upward opening, the body hardened rail is installed on the body base and arranged in the body space, the body hardened rail is connected between the end pieces, and the screw is connected between the end pieces.

3. The composite screw slide according to claim 1, characterized in that: It also includes a top cover which is arranged on the top side of the slide body.

4. The composite screw slide according to claim 1, characterized in that: The first material used for the slide body of the slide unit is aluminum, and the second material used for the slide hardened rail is steel.

5. The composite screw slide according to claim 4, characterized in that: The slide body of the slide unit is manufactured using an aluminum profile process.

6. The composite screw slide according to claim 1, characterized in that: The inner circulation section of each circulating track member is tubular and has an oil filling hole arranged on its top side and passing through its inner and outer sides. The slide body of the slide unit has two oil filling channels that are respectively connected to the oil filling holes and pass through the inner circulation hole to the top side of itself.

7. The composite screw slide according to claim 1, characterized in that: The slide unit further includes four outer circulators respectively covering the ball return sections to prevent the balls from falling from the chain belt.

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