Main shaft assembly structure of gantry machining center

Abstract

The invention relates to the technical field of machining equipment, in particular to a gantry machining center spindle assembly structure which comprises a machine tool body, a left longitudinal beam and a right longitudinal beam capable of moving left and right are mounted at the upper end of the machine tool body, a mounting frame capable of moving front and back is mounted on the longitudinal beams, and a spindle box vertically penetrates through the center of the inner side of the mounting frame. The clamping blocks on the left side and the right side are clamped on the guide rail to achieve sliding installation on the guide rail, and the V-shaped clamping grooves formed in the clamping blocks on the left side and the right side are matched with the trapezoid edges on the guide rail, so that the more relative clamping of the two clamping blocks is achieved, and the tighter matching with the guide rail is achieved. When a gap between the clamping blocks and the guide rail is enlarged due to abrasion, the two clamping blocks are relatively clamped by screwing the adjusting screws, so that the clamping blocks are tightly matched with the guide rail, compensation after the abrasion gap is enlarged is met, stable sliding of the sliding block on the guide rail is guaranteed, and the machining precision of the spindle box is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing equipment, and in particular to a main shaft assembly structure of a gantry processing center. Background Art

[0002] The gantry machining center refers to a machining center where the axis of the spindle Z axis is set perpendicular to the worktable. The overall structure is a large-scale machining center with a gantry structure frame composed of double columns and a top beam, and there is a crossbeam in the middle of the double columns. It is especially suitable for processing large workpieces and workpieces with complex shapes. The spindle and the spindle box of the gantry machining center are installed in the whole equipment as a whole. The installation of the spindle is realized by installing the spindle box on the equipment, and the spindle box is installed and assembled by the cooperation of the slider and the linear rail on the slide seat.

[0003] The Chinese patent with announcement number CN107900394B discloses a five-axis linkage machining center, including a base and a spindle box. In order to ensure the rigidity of the machining center and the stability of the spindle box, a slide seat, a saddle seat and a gantry seat are arranged in sequence from top to bottom. The gantry seat is arranged on the base. The base is provided with a first and a second support seat, which can complete five-axis linkage machining of workpieces and three-axis machining of workpieces. The connecting part of the spindle box slider is provided with a pressure block, which can reinforce the slider and prevent itself from loosening. The shaft screw is installed from bottom to top. The structure of the present invention is more reasonable, rigid, universal, and more convenient to maintain.

[0004] The spindle box of the above-mentioned five-axis linkage machining center is installed and assembled by the cooperation between the slider and the linear rail on the slide seat. The slider and the linear rail in this assembly structure will wear out after a long period of sliding cooperation. The gap between the slider and the linear rail after wear becomes larger, thereby affecting the machining accuracy of the spindle box. It does not have the function of adjusting the slider to compensate for the wear. In addition, dust is easily accumulated on the linear rail of the above-mentioned five-axis linkage machining center, which will increase the sliding friction and wear of the slider. It does not have the function of automatically cleaning the dust accumulated on the linear rail. Summary of the invention

[0005] In order to solve the problem that the above-mentioned five-axis linkage machining center does not have the function of adjusting the slider to compensate for wear and does not have the function of automatically cleaning the dust accumulated on the linear rail, the present invention proposes a gantry machining center spindle assembly structure.

[0006] In order to solve the above technical problems, the present invention is realized through the following technical solutions: a gantry machining center spindle assembly structure, including a machine tool body, two left and right longitudinal beams that can move left and right are installed on the upper end of the machine tool body, and a mounting frame that can move in the front and back directions is installed on the longitudinal beam, a spindle box is vertically inserted through the inner center of the mounting frame, and the spindle box is adjusted up and down on the inner side of the mounting frame, a spindle is installed at the lower end of the spindle box, vertical guide rails are fixed on the front and back sides of the spindle box, and two upper and lower sliders are clamped on the guide rails, and the opposite sides of the upper and lower sliders can be detachably connected with a cleaning block, and the cleaning block is slidably clamped on the guide rail, and the cleaning block can clean the dust on the guide rail. The guide rail is scraped off and the guide rail is lubricated with oil. The slider includes a mounting plate, which is fixed to the mounting frame by screws, and the mounting plate is provided with left and right clamping blocks clamped on both sides of the guide rail on one side of the mounting plate facing the guide rail. The left and right clamping blocks can be movably installed on the mounting plate left and right, and V-shaped clamping grooves are provided on opposite sides of the two clamping blocks. The guide rail is arranged in an I-shape, and trapezoidal edges are provided on the left and right sides of the position where the guide rail and the clamping block are fitted, and the two inclined surfaces of the trapezoidal edges are tightly fitted with the two inclined surfaces in the clamping groove, and a raised fixing block is fixed to the middle part of the side of the mounting plate facing the clamping block, and adjusting screws are inserted on the opposite sides of the two clamping blocks, and one end of the adjusting screw is threadedly installed on the fixing block.

[0007] By adopting the above technical scheme, the clamping blocks on the left and right sides are clamped on the guide rail to achieve sliding installation on the guide rail, and the V-shaped clamping grooves on the left and right sides of the clamping blocks cooperate with the trapezoidal edges on the guide rail so that the two clamping blocks are relatively clamped and the cooperation with the guide rail is tighter. When the gap between the clamping blocks and the guide rail becomes larger due to wear, the two clamping blocks are relatively clamped by screwing the adjusting screw, so that the clamping blocks and the guide rail cooperate closely, thereby satisfying the compensation for the increase in the wear gap and ensuring the stable sliding of the slider on the guide rail, thereby ensuring the processing accuracy of the spindle box, and the cleaning block set on the opposite side of the upper and lower sliders can follow the movement of the slider to scrape and clean the dust on the guide rail, and can also perform real-time oiling and lubrication on the guide rail, thereby better ensuring the sliding of the slider on the guide rail, and also reducing the wear between the slider and the guide rail.

[0008] As a preferred solution, mounting holes are provided near the four corners of the mounting plate, guide rods are fixed on the left and right sides of the fixing block near the upper and lower ends, and one end of the guide rod is inserted into the clamping block, and threaded holes are provided in the middle of the left and right sides of the fixing block.

[0009] By adopting the above technical solution, the fixing block is used to movably guide the clamping block through the guide rod so that the clamping block can be movably installed on the mounting plate left and right, and the threaded hole on the fixing block is used for threaded connection of the adjusting screw.

[0010] As a preferred solution, a guide hole is opened on the side of the clamping block facing the fixed block, and the diameter of the guide hole is the same as the diameter of the guide rod, and a hanging column is fixed on the side of the fixed block away from the fixed block.

[0011] By adopting the above technical solution, the clamp block achieves sliding cooperation with the guide rod through the guide hole, thereby guiding the clamp block when it moves left and right, so that the clamp block can only move left and right without deviation in other directions.

[0012] As a preferred solution, a rotating handle is fixed to one end of the adjusting screw away from the clamping block, and a locking screw is threadedly mounted on the rotating handle, and one end of the locking screw is tightly pressed against the clamping block.

[0013] By adopting the above technical solution, the adjusting screw is adjusted by rotating the handle, and the locking screw is tightened on the slider to lock and fix it, thereby preventing the adjusting screw from loosening.

[0014] As a preferred solution, a slot is provided on the side of the cleaning block facing the guide rail, and a scraper sleeve is installed on the inner side of the slot near the two ports, and a plurality of clamping parts are fixed on the upper and lower ends of the cleaning block to limit and fix the scraper sleeve after installation. A rotatable hanging rod is installed on the left and right sides of the cleaning block, one end of the hanging rod is hung on the hanging column, a hanging slot is provided on the end of the hanging rod facing the hanging column, and a bayonet connected to the hanging slot is provided on one side of the hanging rod, and the opening distance of the bayonet is smaller than the diameter of the hanging column.

[0015] By adopting the above technical solution, the cleaning block is hung on the hanging column through the hanging groove at one end of the hanging rod to achieve a detachable connection between the slider and the cleaning block, so that the cleaning block is driven to move while the slider moves, thereby cleaning and lubricating the guide rail.

[0016] As a preferred solution, a cavity is opened on the side of the cleaning block away from the slot, and the inside of the cavity is filled with oil-absorbing cotton, an oiling piece is installed in the middle part of the inner side of the slot, and a part of the oiling piece is arranged on the inner side of the cavity, a cover plate is installed at the port of the cavity, and a raised clamping ring is fixed on the side of the cover plate facing the cavity, and tightening screws for tightening the cover plate are installed on both sides of the cleaning block.

[0017] By adopting the above technical solution, the cavity opened in the cleaning block is used to store lubricating oil, and the oil-absorbing cotton in the cavity is used to absorb the lubricating oil, thereby realizing a slow and continuous supply of lubricating oil to the oiled parts, achieving long-term use of the lubricating oil and avoiding excessive and too fast oil supply due to the self-fluidity of the lubricating oil.

[0018] As a preferred solution, a tubular refueling port is provided on the side of the cleaning block away from the slider, and a sealing cover is mounted on the refueling port. Mounting slots are provided at both upper and lower ends of the slot, and a clearance opening is provided in the middle of the slot.

[0019] By adopting the above technical solution, the cleaning block is used to add lubricating oil through the oil filling port, and the oil filling port is sealed by the sealing cover.

[0020] As a preferred solution, the pressing member comprises a fixing column fixed on the cleaning block, a pressing plate is sleeved on the fixing column, and the pressing plate is pressed against the edge of the scraping sleeve.

[0021] By adopting the above technical solution, the pressing member presses the scraper sleeve on the dust scraper sleeve by rotating the pressing plate, thereby achieving limited fixation of the dust scraper sleeve after installation.

[0022] As a preferred solution, the scraper sleeve includes a hoop, a plurality of raised rubber strips are fixed on the inner side of the hoop, and the rubber strips are tightly attached to the guide rail, and the hoop is made of plastic.

[0023] By adopting the above technical solution, the dust scraping sleeve is sleeved on the outer side of the guide rail and the dust falling on the guide rail is scraped and cleaned through the rubber strip, thereby preventing the dust from affecting the sliding of the slider on the guide rail.

[0024] As a preferred embodiment, the oiling part includes a permeation plate installed in the cleaning block, a raised oiling boss is fixed to the inner middle part of the permeation plate, and the oiling boss passes through the clearance opening and is pressed against the guide rail. The permeation plate and the oiling boss are an integrated ceramic fiber braid.

[0025] By adopting the above technical solution, the oil in the cleaning block is infiltrated and diverted through the penetration plate and sent to the oiling boss, and the oil is smeared on the guide rail through the oiling boss to achieve oiling and lubrication of the guide rail.

[0026] Compared with the prior art, the present invention has the following beneficial effects: 1. The slider in the spindle assembly structure of the present invention is clamped on the guide rail by the clamping blocks on the left and right sides to realize sliding installation on the guide rail, and the V-shaped clamping grooves on the clamping blocks on the left and right sides cooperate with the trapezoidal edges on the guide rail so that the two clamping blocks are clamped more closely and the cooperation with the guide rail is tighter. When the gap between the clamping blocks and the guide rail increases due to wear, the two clamping blocks are clamped relatively by screwing the adjusting screw, so that the clamping blocks and the guide rail are closely matched, thereby meeting the compensation for the increase in the wear gap, ensuring the stable sliding of the slider on the guide rail, and thus ensuring the processing accuracy of the spindle box; 2. By setting the cleaning block on the opposite side of the upper and lower sliders, the dust on the guide rail can be scraped and cleaned following the movement of the slider, and the guide rail can be lubricated in real time, so as to better ensure the sliding of the slider on the guide rail and reduce the wear between the slider and the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the matching state of the spindle box and the mounting frame of the present invention; Figure 3 It is a schematic diagram of the spindle box of the present invention; Figure 4 is a schematic diagram of a slider of the present invention; Figure 5 It is a schematic diagram of the matching state of the slider and the guide rail of the present invention; Figure 6 is a schematic diagram of a mounting plate of the present invention; Figure 7 is a schematic diagram of a clamp block of the present invention; Figure 8 is a schematic diagram of a cleaning block of the present invention; Fig. 9 It is a schematic diagram of the hanging rod of the present invention; Fig.10 It is a schematic diagram of the internal structure of the cleaning block of the present invention; Fig.11 It is a schematic diagram of the internal structure of the card slot of the cleaning block of the present invention; Fig.12 is a schematic diagram of a pressing member of the present invention; Fig.13 It is a schematic diagram of the scraping cover of the present invention; Fig.14 It is a schematic diagram of the oiling part of the present invention.

[0028] In the figure: 1. machine tool body; 2. spindle box; 3. mounting frame; 4. cleaning block; 41. hanging rod; 411. hanging groove; 412. bayonet; 42. clamping piece; 421. fixing column; 422. pressing plate; 43. scraper sleeve; 431. sleeve hoop; 432. rubber strip; 44. oiling piece; 441. penetration plate; 442. oiling boss; 45. cover plate; 46. oil absorbing cotton; 47. tightening screw; 48. cover; 49. oiling port; 410. mounting groove; 5. slider; 51. clamping block; 511. hanging column; 512. clamping groove; 513. guide hole; 52. adjusting screw; 521. locking screw; 522. turning handle; 53. mounting plate; 531. fixing block; 532. mounting hole; 533. guide rod; 6. guide rail; 61. trapezoidal edge. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a gantry machining center spindle assembly structure includes a machine tool body 1, and two left and right longitudinal beams that can be moved left and right are installed on the upper end of the machine tool body 1, and a mounting frame 3 that can be moved in the front and rear directions is installed on the longitudinal beam, and a spindle box 2 is vertically inserted through the inner center of the mounting frame 3, and the spindle box 2 is adjusted up and down on the inner side of the mounting frame 3, and vertical guide rails 6 are fixed on the front and rear sides of the spindle box 2, and two upper and lower sliders 5 are clamped on the guide rails 6, and the sliders 5 include a mounting plate 53, and the mounting plate 53 is fixed to the mounting frame 3 by screws, and two left and right clamping blocks 51 that are clamped on both sides of the guide rail 6 are installed on the side of the mounting plate 53 facing the guide rail 6, and the left and right clamping blocks 51 can be movably installed on the mounting plate 53, and V-shaped clamping grooves 512 are provided on the opposite sides of the two clamping blocks 51, and the guide rail 6 is set in an I-shape, and trapezoidal edges 61 are provided on the left and right sides of the portion where the guide rail 6 and the clamping block 51 are clamped and matched. The two inclined surfaces of 1 are tightly fitted with the two inclined surfaces in the clamping groove 512, and a raised fixing block 531 is fixed to the middle part of the side of the mounting plate 53 facing the clamping block 51. Adjusting screws 52 are inserted into the opposite sides of the two clamping blocks 51, and one end of the adjusting screw 52 is threadedly installed on the fixing block 531. The clamping blocks 51 on the left and right sides are clamped on the guide rail 6 to realize sliding installation on the guide rail 6, and the V-shaped clamping grooves 512 opened on the clamping blocks 51 on the left and right sides cooperate with the trapezoidal edges 61 on the guide rail 6 so that the two clamping blocks 51 are clamped more relatively and the cooperation with the guide rail 6 is tighter. When the gap between the clamping blocks 51 and the guide rail 6 increases due to wear, the two clamping blocks 51 are relatively clamped by screwing the adjusting screws 52, so that the clamping blocks 51 and the guide rail 6 are closely matched, thereby meeting the compensation for the increase of the wear gap, ensuring the stable sliding of the slider 5 on the guide rail 6, and thus ensuring the machining accuracy of the spindle box 2.

[0036] like Figure 3 As shown, the cleaning blocks 4 are detachably connected to the opposite sides of the upper and lower sliders 5, and the cleaning blocks 4 are slidably mounted on the guide rails 6. The cleaning blocks 4 can scrape off the dust on the guide rails 6 and lubricate the guide rails 6. The cleaning blocks 4 arranged on the opposite sides of the upper and lower sliders 5 can follow the movement of the sliders 5 to scrape off the dust on the guide rails 6, and can lubricate the guide rails 6 in real time, thereby better ensuring the sliding of the sliders 5 on the guide rails 6 and reducing the wear between the sliders 5 and the guide rails 6.

[0037] like Figure 6As shown, the mounting plate 53 is provided with mounting holes 532 near the four corners for inserting screws to fix it on the mounting frame 3, and guide rods 533 are fixed on the left and right sides of the fixing block 531 near the upper and lower ends, and one end of the guide rod 533 is inserted into the clamping block 51, and threaded holes are provided in the middle parts of the left and right sides of the fixing block 531. The fixing block 531 is used to movably guide the clamping block 51 through the guide rods 533 so that the clamping block 51 can be movably installed on the mounting plate 53 left and right, and the threaded holes on the fixing block 531 are used to thread the adjusting screws 52.

[0038] like Figure 7 As shown, a guide hole 513 is provided on the side of the clamping block 51 facing the fixed block 531, and the diameter of the guide hole 513 is the same as the diameter of the guide rod 533, thereby achieving a stable sliding fit between the guide hole 513 and the guide rod 533. A hanging column 511 is fixed on the side of the fixed block 531 away from the fixed block 531. The clamping block 51 achieves a sliding fit with the guide rod 533 through the guide hole 513, thereby achieving guidance when the clamping block 51 is moved left and right, so that the clamping block 51 can only move in the left and right directions without deviation in other directions.

[0039] like Figure 7 As shown, a turning handle 522 is fixed to the end of the adjusting screw 52 away from the clamping block 51, and a locking screw 521 is threadedly installed on the turning handle 522, and one end of the locking screw 521 is pressed against the clamping block 51, and the adjusting screw 52 is adjusted by rotating the turning handle 522, and the locking screw 521 is pressed against the slider 5 to lock and fix it, thereby preventing the adjusting screw 52 from loosening, thereby ensuring that the adjusting screw 52 is firmly locked to the clamping block 51 after adjustment.

[0040] like Figure 8 and Fig. 9As shown, a slot is provided on the side of the cleaning block 4 facing the guide rail 6, and a scraper sleeve 43 is installed on the inner side of the slot near the two ports and is sleeved on the guide rail 6. A plurality of clamping members 42 are fixed to the upper and lower ends of the cleaning block 4 to limit and fix the scraper sleeve 43 after installation. A rotatable hanging rod 41 is installed on the left and right sides of the cleaning block 4, and one end of the hanging rod 41 is hung on the hanging column 511. A hanging slot 411 is provided on the end of the hanging rod 41 facing the hanging column 511. The cleaning block 4 is hung on the hanging column 511 through the hanging slot 411 at one end of the hanging rod 41, thereby realizing a detachable connection between the slider 5 and the cleaning block 4, so that the cleaning block 4 is driven to move while realizing the movement of the slider 5, thereby cleaning and moving the guide rail 6. Oil lubrication, a bayonet 412 connected to the hanging groove 411 is provided on one side of the hanging rod 41. When the ring hanging rod 41 is rotated, the bayonet 412 is firstly sleeved on the hanging column 511 and the hanging column 511 passes through the bayonet 412 and is stuck in the hanging groove 411 to achieve hanging. The opening distance of the bayonet 412 is smaller than the diameter of the hanging column 511, and the opening distance of the bayonet 412 is smaller than the diameter of the hanging column 511, thereby achieving a limit blockage for the hanging column 511 when being hung in the hanging groove 411. At the same time, when removing the hanging rod 41 from the hanging column 511, it is necessary to apply pressure to the hanging rod 41 so that the hanging column 511 is squeezed outward from the bayonet 412 so that the bayonet 412 expands, so that the hanging rod 41 can be removed from the hanging column 511.

[0041] like Fig.10 As shown, a cavity is provided on the side of the cleaning block 4 away from the card slot, and the inner side of the cavity is filled with oil-absorbing cotton 46. The cavity provided in the cleaning block 4 is used to store lubricating oil, and the oil-absorbing cotton 46 in the cavity is used to absorb the lubricating oil, thereby realizing a slow and continuous supply of lubricating oil to the oiling member 44, realizing the long-term use of the lubricating oil and avoiding excessive and too fast oil supply due to the self-flowing property of the lubricating oil. The oiling member 44 is installed in the middle part of the inner side of the card slot, and a part of the oiling member 44 is arranged on the inner side of the cavity. The lubricating oil in the oil-absorbing cotton 46 penetrates into the upper oil part 44 and is smeared on the guide rail 6 outwardly to achieve oil lubrication. A cover plate 45 is installed at the port of the cavity, and a raised clamping ring is fixed on the side of the cover plate 45 facing the cavity. The cover plate 45 is clamped at the port of the cavity through the clamping ring for sealing the cavity. Tightening screws 47 for tightening and fixing the cover plate 45 are installed on the left and right sides of the cleaning block 4. The cover plate 45 is locked and fixed by screwing the tightening screws 47 to tighten it on the clamping ring.

[0042] like Fig.11As shown, a tubular refueling port 49 is provided on the side of the cleaning block 4 away from the slider 5, and a cover 48 is mounted on the refueling port 49. The cleaning block 4 is used to add lubricating oil through the refueling port 49, and the refueling port 49 is covered by the cover 48. Mounting grooves 410 are provided at both upper and lower ends of the slot for installing the scraper sleeve 43, and a clearance opening is provided in the middle portion of the slot for making way for the oiling boss 442 to be oiled.

[0043] like Fig.12 As shown, the clamping member 42 includes a fixed column 421 fixed on the cleaning block 4, and a pressure plate 422 is mounted on the fixed column 421, and the pressure plate 422 is pressed against the edge of the scraper sleeve 43. The clamping member 42 rotates the pressure plate 422 to press it against the scraper sleeve 43, thereby achieving limited fixation of the scraper sleeve 43 after installation.

[0044] like Fig.13 As shown, the scraper sleeve 43 includes a hoop 431, and a plurality of raised rubber strips 432 are fixed on the inner side of the hoop 431, and the rubber strips 432 are tightly attached to the guide rail 6. The scraper sleeve 43 is sleeved on the outer side of the guide rail 6 and the dust falling on the guide rail 6 is scraped and cleaned through the rubber strips 432 to prevent the dust from affecting the sliding of the slider 5 on the guide rail 6. The hoop 431 is a plastic product, which has the advantages of easy molding and manufacturing and low cost.

[0045] like Fig.14 As shown, the oiling part 44 includes a penetration plate 441 installed in the cleaning block 4, and a raised oiling boss 442 is fixed to the inner middle part of the penetration plate 441. The oil in the cleaning block 4 is infiltrated and diverted through the penetration plate 441 and sent to the oiling boss 442. The oil is smeared on the guide rail 6 through the oiling boss 442 to achieve oiling and lubrication of the guide rail 6. The oiling boss 442 passes through the clearance opening and presses against the guide rail 6 to better perform real-time oiling and lubrication. The penetration plate 441 and the oiling boss 442 are an integrated ceramic fiber braid. The ceramic fiber braid has good wear resistance and can achieve the penetration of lubricating oil, so as to better oil and lubricate the guide rail 6.

[0046] In this embodiment, when the spindle is assembled, the slider 5 is fixed on the mounting frame 3, and then the spindle box 2 is installed on the mounting frame 3 by using the cooperation between the guide rail 6 and the slider 5. When the spindle box 2 is processing, the slider 5 in the assembly structure slides on the guide rail 6 to guide the spindle box 2 when it is lifted or lowered. When the gap between the guide rail 6 and the slider 5 becomes larger due to wear after long-term use, the adjusting screws 52 on the clamping blocks 51 on the left and right sides are screwed so that the clamping blocks 51 on both sides are relatively clamped, and the clamping blocks 51 on both sides are further close to the guide rail 6. At this time, the V-shaped The two inclined surfaces in the clamping groove 512 are tightly matched with the two inclined surfaces on the trapezoidal edge 61 to provide stable sliding guidance. After the adjustment of the clamping block 51 is completed, the locking screw 521 is screwed to tighten the clamping block 51 to lock and fix the turning handle 522. When the spindle box 2 and the guide rail 6 are lifted and lowered, the scraper sleeve 43 on the cleaning block 4 uses the rubber strip 432 to clean the surface of the guide rail 6, and the dust on the surface of the guide rail is scraped off and cleaned. When the guide rail 6 and the cleaning block 4 move relative to each other, the lubricating oil in the oil-absorbing cotton 46 penetrates into the upper oil part 44 and is smeared on the guide rail 6 to complete the oiling and lubrication of the guide rail 6.

[0047] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A gantry machining center spindle assembly structure, comprising a machine tool body (1), characterized in that: The upper end of the machine tool body (1) is provided with two longitudinal beams that can move left and right, and a mounting frame (3) that can move forward and backward is installed on the longitudinal beam. A spindle box (2) is vertically inserted through the inner center of the mounting frame (3), and the spindle box (2) is adjusted to rise and fall on the inner side of the mounting frame (3). A spindle is installed at the lower end of the spindle box (2). Vertical guide rails (6) are fixed on the front and rear sides of the spindle box (2), and two upper and lower sliders (5) are clamped on the guide rails (6). The opposite sides of the upper and lower sliders (5) can be detachably connected with a cleaning block (4), and the cleaning block (4) is slidably clamped on the guide rail (6). The cleaning block (4) can scrape off dust on the guide rail (6) and lubricate the guide rail (6). The slider (5) comprises a mounting plate (53), and the mounting plate (53) is fixed to the mounting plate by screws. The mounting frame (3) is provided with two left and right clamping blocks (51) clamped on both sides of the guide rail (6) on one side of the mounting plate (53) facing the guide rail (6). The left and right clamping blocks (51) can be movably mounted on the mounting plate (53) on the left and right sides, and the two clamping blocks (51) are provided with V-shaped clamping grooves (512) on opposite sides. The guide rail (6) is arranged in an I-shape, and trapezoidal edges (61) are provided on the left and right sides of the portion where the guide rail (6) and the clamping blocks (51) are clamped and matched. The two inclined surfaces of the trapezoidal edges (61) are tightly fitted with the two inclined surfaces in the clamping grooves (512). A protruding fixing block (531) is fixed on the middle part of the side of the mounting plate (53) facing the clamping blocks (51). Adjusting screws (52) are inserted on the opposite sides of the two clamping blocks (51), and one end of the adjusting screw (52) is threadedly mounted on the fixing block (531).

2. The main shaft assembly structure of a gantry machining center according to claim 1, characterized in that: The mounting plate (53) is provided with mounting holes (532) near the four corners, guide rods (533) are fixed on the left and right sides of the fixing block (531) near the upper and lower ends, and one end of the guide rod (533) is inserted into the clamping block (51), and threaded holes are provided in the middle of the left and right sides of the fixing block (531).

3. The main shaft assembly structure of a gantry machining center according to claim 2, characterized in that: A guide hole (513) is provided on a side of the clamping block (51) facing the fixing block (531), and the diameter of the guide hole (513) is the same as the diameter of the guide rod (533). A hanging column (511) is fixed on a side of the fixing block (531) away from the fixing block (531).

4. The main shaft assembly structure of a gantry machining center according to claim 3, characterized in that: A rotating handle (522) is fixed to one end of the adjusting screw (52) away from the clamping block (51), and a locking screw (521) is threadedly mounted on the rotating handle (522), and one end of the locking screw (521) is tightly pressed against the clamping block (51).

5. The main shaft assembly structure of a gantry machining center according to claim 4, characterized in that: The cleaning block (4) is provided with a slot on one side facing the guide rail (6), and a scraper sleeve (43) sleeved on the guide rail (6) is installed near two ports on the inner side of the slot. A plurality of clamping members (42) are fixed to the upper and lower ends of the cleaning block (4) for limiting and fixing the scraper sleeve (43) after installation. A rotatable hanging rod (41) is installed on the left and right sides of the cleaning block (4), one end of the hanging rod (41) is hung on the hanging column (511), a hanging slot (411) is provided on one end of the hanging rod (41) facing the hanging column (511), and a slot (412) connected to the hanging slot (411) is provided on one side of the hanging rod (41), and the opening distance of the slot (412) is smaller than the diameter of the hanging column (511).

6. The main shaft assembly structure of a gantry machining center according to claim 5, characterized in that: A cavity is formed on a side of the cleaning block (4) away from the slot, and oil-absorbing cotton (46) is filled inside the cavity. An oiling member (44) is installed at a middle portion of the inside of the slot, and a portion of the oiling member (44) is arranged inside the cavity. A cover plate (45) is installed at the end of the cavity, and a raised clamping ring is fixed on a side of the cover plate (45) facing the cavity. Tightening screws (47) for tightening the cover plate (45) are installed on both left and right sides of the cleaning block (4).

7. The main shaft assembly structure of a gantry machining center according to claim 6, characterized in that: A tubular refueling port (49) is provided on a side of the cleaning block (4) away from the slider (5), and a sealing cover (48) is mounted on the refueling port (49). Mounting slots (410) are provided at both upper and lower ends of the slot, and a clearance opening is provided in the middle of the slot.

8. The main shaft assembly structure of a gantry machining center according to claim 7, characterized in that: The pressing member (42) comprises a fixing column (421) fixed on the cleaning block (4), a pressing plate (422) is sleeved on the fixing column (421), and the pressing plate (422) is pressed against the edge of the scraper sleeve (43).

9. The main shaft assembly structure of a gantry machining center according to claim 8, characterized in that: The scraper sleeve (43) comprises a sleeve hoop (431), a plurality of raised rubber strips (432) are fixed on the inner side of the sleeve hoop (431), and the rubber strips (432) are tightly attached to the guide rail (6). The sleeve hoop (431) is a plastic product.

10. The main shaft assembly structure of a gantry machining center according to claim 9, characterized in that: The oiling member (44) comprises a permeable plate (441) mounted in the cleaning block (4); a raised oiling boss (442) is fixed to the middle portion of the inner side of the permeable plate (441); the oiling boss (442) passes through the clearance opening and abuts against the guide rail (6); the permeable plate (441) and the oiling boss (442) are an integrated ceramic fiber braid.

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