A double-spindle and double-workbench gantry drilling and milling special machine

Abstract

The present invention relates to the field of multi-functional metal processing machine tools, in particular to a double-spindle and double-workbench gantry drilling and milling special machine equipment, which includes a fixed gantry bed body, and also includes two pairs of Y-axis parallel linear guides installed on the platform of the fixed gantry bed body. Each pair of linear guides of the Y-axis is servo-driven and connected to a slide table. A pair of X-axis parallel linear guides are installed on both sides of the gantry of the fixed gantry bed body. Two pairs of linear guides of the X-axis are respectively servo-driven and connected to a milling spindle and a drilling and tapping spindle, and the gantry of the fixed gantry bed body is located in the middle of the Y-axis linear guides. By integrating the two processes of milling and drilling and tapping on one machine tool, the milling and drilling and tapping processes do not interfere with each other, and the functional areas are safely isolated. The two slide tables alternately move in the two processing areas for loading and unloading, so as to realize the high-efficiency processing of multiple processes of products by a single machine tool. The present invention also designs a special support component for the slide table in this structural layout to improve the compatibility of the equipment for processing sheet metal parts.

Description

Technical Field

[0001] The present invention relates to the field of multi-functional metal processing machine tools, and particularly to a double-spindle and double-workbench gantry drilling and milling special machine equipment. Background Art

[0002] In order to improve the processing efficiency, the existing conventional gantry machine processing equipment increases the single spindle to two or more, and processes multiple workpieces simultaneously to improve the processing efficiency. However, there are also limitations. The main problem is that all spindles are relatively fixed on the same Z-axis slide table and perform the same processing content synchronously. A single spindle cannot perform different processing operations, and products that require multiple processing operations still need more than one machine tool. Therefore, the present invention proposes a double-spindle and double-workbench gantry drilling and milling special machine equipment in which the two spindles can process without interference. Summary of the Invention

[0003] In view of the problems of multi-spindle gantries in the above-mentioned or existing technologies, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide a double-spindle and double-workbench gantry drilling and milling special machine equipment.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A double-spindle and double-workbench gantry drilling and milling special machine equipment, including a fixed gantry bed body, and further including two pairs of Y-axis parallel guide rails installed on the platform of the fixed gantry bed body. Each pair of Y-axis guide rails is servo-driven and connected to a slide table. On both sides of the gantry of the fixed gantry bed body, a pair of X-axis parallel guide rails are installed. The two pairs of X-axis guide rails are respectively servo-driven and connected to a scanning spindle and a drilling and tapping spindle, and the gantry of the fixed gantry bed body is located in the middle of the Y-axis guide rails; the top of the slide table is fixedly connected to a support plate, and the support plate is fixedly connected to a support component, which includes an electromagnetic push rod fixedly connected to the bottom surface of the support plate and a variable-diameter short tube fixedly connected to the top surface of the support plate. The large-diameter end of the short tube opens upward, and the push rod of the electromagnetic push rod coaxially penetrates through the short tube. A short column one is machined at the top of the push rod of the electromagnetic push rod. A sliding sleeve is slidably sleeved in the short tube, and a "L" shaped short pin is arranged between the inner wall of the sliding sleeve and the short column one. One short side of the short pin penetrates through the inner wall of the sliding sleeve and is inserted into the inner wall of the short tube, and the other short side of the short pin is in sliding contact with the circumferential wall of the short column one. A pair of short pins are symmetrically distributed with respect to the short column one, and a coil spring is sleeved between the tops of the two short pins.

[0006] As a preferred scheme of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: a partition is provided between the gantry columns of the fixed gantry bed body, and the partition is provided with a notch matching the moving paths of the two groups of slide tables, and each notch is provided with a pneumatically vertically moving baffle.

[0007] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: a housing is sleeved outside the fixed gantry bed, and safety doors are provided at both ends of the housing located on the Y-axis guide rails.

[0008] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: the outer wall of the small-diameter end of the reduced-diameter short pipe is threadedly fastened to the threaded hole opened on the pallet.

[0009] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: a conical surface transition is provided between the short column 1 and the push rod of the electromagnetic push rod, and a groove 1 is provided on the outer wall of the outer corner of the "L"-shaped bend of the short pin and is sleeved in fit with the conical surface. A conical hole is provided on the side wall of the short pipe, and one end of the short pin is inserted into the conical hole in a matching manner along the radial direction of the short pipe. A groove 2 with an arc-shaped surface is provided on the peripheral wall of the other end of the short pin and is sleeved in fit with the peripheral wall of the short column 1.

[0010] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: the top end of the sliding sleeve is provided with a circular groove, and an oval-shaped sliding groove is provided at the bottom of the circular groove of the sliding sleeve. The ends of the two short pins that are slidably connected to the short column 1 are slidably connected to the sliding groove in a matching manner.

[0011] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: the coil spring is arranged at the bottom of the circular groove, and the inner diameter after the coil spring is contracted is smaller than the size obtained by subtracting the diameter of the short column 1 from twice the diameter of the short pin.

[0012] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: a short column 2 is machined by turning at the top end of the short column 1, and a snap ring is clamped at the top end of the short column 2. The outer diameter of the snap ring is larger than the diameter of the short column 1.

[0013] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: the radius of the short column 1 minus the radius of the short column 2 is greater than the depth of the end of the short pin inserted into the conical hole.

[0014] As a preferred embodiment of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention, wherein: chip removal grooves are provided on both sides of the fixed gantry bed platform located on both sides of the two pairs of Y-axis guide rails. The cross-sectional profile of the chip removal groove is semi-circular, and a spiral-shaped screw rod is coaxially sleeved in the chip removal groove. One end of the screw rod is fixedly and coaxially connected with a belt pulley and is rotationally connected to the fixed gantry bed sheet metal.

[0015] Beneficial effects of the double-spindle and double-workbench gantry drilling and milling special machine equipment of the present invention: By integrating the two processes of milling and drilling / tapping on one machine tool, the milling and drilling / tapping processes do not interfere with each other, and the functional areas are safely isolated. The double slides alternately move in the two processing areas for loading and unloading, thus achieving efficient multi-process processing of products by a single machine tool. The present invention also designs a special support component for the slide in this structural layout to improve the compatibility of the equipment for processing sheet metal parts. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the double-spindle and double-workbench gantry drilling and milling special machine equipment from the perspective of the drilling / tapping spindle side.

[0018] Figure 2 It is a schematic structural diagram of the double-spindle and double-workbench gantry drilling and milling special machine equipment from the perspective of the milling spindle side.

[0019] Figure 3 It is a schematic structural diagram of the double-spindle and double-workbench gantry drilling and milling special machine equipment after removing the sheet metal housing.

[0020] Figure 4 It is a schematic diagram of the chip removal structure of the fixed gantry bed

[0021] Figure 5 It is a schematic diagram of the structure of the slide.

[0022] Figure 6 It is a schematic diagram of the structure of the upper plate on the slide.

[0023] Figure 7 It is a cross-sectional view of the structure of the plate at the support component.

[0024] Figure 8 For Figure 7 The cross-sectional view of the structure at position A in

[0025] Figure 9 For Figure 8 The structural breakdown diagram of

[0026] In the figure: 100, fixed gantry bed; 101, milling spindle; 102, drilling and tapping spindle; 103, partition board; 104, baffle; 105, housing; 106, safety door; 107, chip removal groove; 108, screw; 200, slide table; 201, pallet; 202, support assembly; 203, electromagnetic push rod; 204, short pipe; 205, short column 1; 206, short column 2; 207, conical surface; 208, sliding sleeve; 209, short pin; 210, coil spring; 211, snap ring; 204a, tapered hole; 208a, circular groove; 208b, sliding groove; 209a, groove 1; 209b, groove 2. Specific embodiments

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0028] Example, referring to Figures 1 to 9 , this embodiment provides a double-spindle double-workbench gantry drilling and milling special machine equipment. By integrating the two processes of milling and drilling and tapping on one machine tool and isolating the functional areas, multi-process efficient processing of products is achieved. As Figure 3 shown, it includes a fixed gantry bed 100, and also includes two pairs of Y-axis parallel guide rails installed on the platform of the fixed gantry bed 100. Each pair of Y-axis guide rails is servo-driven and connected to a slide table 200. On both sides of the gantry of the fixed gantry bed 100, a pair of X-axis parallel guide rails are installed. The two pairs of X-axis guide rails are respectively servo-driven and connected to a milling spindle 101 and a drilling and tapping spindle 102. And the gantry of the fixed gantry bed 100 is located in the middle of the Y-axis guide rails. Chip removal grooves 107 are provided on both sides of the platform of the fixed gantry bed 100 where the two pairs of Y-axis guide rails are located. The cross-sectional contour of the chip removal groove 107 is semi-circular, and a spiral screw 108 is coaxially sleeved in the chip removal groove 107. One end of the screw 108 is fixedly and coaxially connected with a belt pulley and is rotationally connected to the sheet metal of the fixed gantry bed 100;

[0029] As Figure 5 shown, the top end of the slide table 200 is fixedly connected with a pallet 201. As Figure 6 and Figure 7 shown, the pallet 201 is fixedly connected with a support assembly. As Figure 8 and Figure 9As shown in the figure, it includes an electromagnetic push rod 203 fixedly connected to the bottom surface of the support plate 201 and a reduced-diameter short tube 204 fixedly connected to the top surface of the support plate 201. The large-diameter end of the short tube 204 opens upward, and the push rod of the electromagnetic push rod 203 coaxially penetrates through the short tube 204. A short column 205 is machined by turning at the top end of the push rod of the electromagnetic push rod 203. A sliding sleeve 208 is slidably sleeved in the short tube 204, and a short pin 209 in the shape of an "L" is arranged between the inner wall of the sliding sleeve 208 and the short column 205. One short side of the short pin 209 penetrates through the inner wall of the sliding sleeve 208 and is inserted into the inner wall of the short tube 204, and the other short side of the short pin 209 is in sliding contact with the peripheral wall of the short column 205 in a fitting manner. A pair of short pins 209 are symmetrically distributed with respect to the short column 205, and a coil spring 210 is sleeved between the tops of the two short pins 209.

[0030] Specifically, as Figure 3 shown, a partition plate 103 is arranged between the gantry columns of the fixed gantry bed 100, and the partition plate 103 is provided with slots matching the moving paths of the two groups of sliding tables 200, and each slot is provided with a baffle 104 that moves vertically by air pressure, as Figure 1 and Figure 2 shown, a housing 105 is sleeved outside the fixed gantry bed 100, and safety doors 106 are arranged at both ends of the housing 105 located on the Y-axis rail.

[0031] As Figure 8 shown, the outer wall of the small-diameter end of the reduced-diameter short tube 204 is threadedly fastened to the threaded hole opened on the support plate 201, as Figure 9 shown, a tapered surface 207 is arranged between the short column 205 and the push rod of the electromagnetic push rod 203 for transition, and a groove 209a is opened on the outer wall of the "L"-shaped bent outer corner of the short pin 209 to be in fitting socket connection with the tapered surface 207. A tapered hole 204a is opened on the side wall of the short tube 204, and one end of the short pin 209 is inserted into the tapered hole 204a in a matching manner along the radial direction of the short tube 204. A groove 209b with an arc surface is opened on the peripheral wall of the other end of the short pin 209 to be in fitting socket connection with the peripheral wall of the short column 205. The top end of the sliding sleeve 208 is set as a round groove 208a, and an oval-shaped sliding groove 208b is arranged at the bottom of the round groove 208a of the sliding sleeve 208. The ends of the two short pins 209 that are in sliding connection with the short column 205 are in matching sliding connection with the sliding groove 208b. In addition, the coil spring 210 is arranged at the bottom of the round groove 208a, and the inner diameter of the coil spring 210 after contraction is smaller than the size obtained by subtracting the diameter of the short column 205 from twice the diameter of the short pin 209. A short column 206 is machined by turning at the top end of the short column 205, and a snap ring 211 is clamped at the top end of the short column 206. The outer diameter of the snap ring 211 is larger than the diameter of the short column 205, and the radius of the short column 205 minus the radius of the short column 206 is greater than the depth of the end of the short pin 209 inserted into the tapered hole 204a.

[0032] The present invention provides a double-spindle double-workbench gantry drilling and milling special machine equipment, in particular, a multi-functional machining structure layout for a machine tool, and a slide table 200 and its workpiece support assembly 202 serving this structure layout.

[0033] The structural layout of the double-spindle double-workbench of the present invention is different from existing machining equipment in that although the present invention and existing machine tools both use essential equipment components such as linear guides and servo motors, and also adopt existing numerical control programming and execution systems, the functional structure layout of the spindle and the slide table 200 in the present invention is completely different from that of existing equipment.

[0034] Explanation in combination with the prior art: Although there are cases of two or more spindles in existing gantry machining equipment, the spindles are fixed on the Z-axis slide table 200, and the spindles are relatively fixed to each other. There are mainly two forms to improve processing efficiency: First, fixtures corresponding to the number of spindles are installed on the workpiece fixing tabletop, and the relative position error between the fixtures and the spindles is required to be very high. All the spindles perform machining completely synchronously together. This is a common multi-spindle machining method in the machining industry, that is, simply increasing or decreasing the number of spindles without changing the original functional structure layout of the machine tool; Second, different spindles hold different types of tools and alternately process the same workpiece, eliminating the tool change process in the tool magazine, thereby limitedly improving production efficiency. When one spindle is machining, the other spindles are in an idle state;

[0035] The working mode of the double-spindle double-workbench structural layout of the present invention is as follows: Refer to Figure 1 、 Figure 2 and Figure 3 , the two slide tables 200 travel back and forth between the milling surface machining area and the drilling and tapping machining area on both sides of the gantry. The two machining areas are isolated by a partition 103 and a movable baffle 104. The purpose of the isolation is to prevent the flying chips in the machining area from affecting the loading and unloading in the non-machining area. The milling surface machining area is the loading area. After the surface is milled, it enters the drilling and tapping machining area, and is unloaded from the drilling and tapping machining area after the machining is completed. The blank material first completes the surface milling machining in the milling surface machining area. The two spindles can work simultaneously without interference, and the slide table 200 continuously alternates positions for loading and unloading.

[0036] To achieve the above target functions, the present invention also involves the following technical details:

[0037] Refer to Figure 3 and Figure 5The fixing of a flat workpiece is to press or clamp the edge of the workpiece. When drilling and tapping a flat workpiece, the workpiece can easily deform under the downward pressure of the tool. Therefore, there must be enough support points at the bottom of the flat workpiece. Drilling and tapping also have another technical difficulty. When a through hole needs to be processed, the tool must pass through the workpiece. If there is an overlap between the processing position and the support, the tool will damage the support. Therefore, the present invention also provides a support assembly.

[0038] refer to Figure 8 The present invention supports the workpiece by contacting the top of the sleeve 208. When the electromagnetic push rod 203 is retracted, when its thinner short column 1 205 is between the two short pins 209, the coil spring 210 is contracted and drives the two short pins 209 to the middle of the sleeve 208, so that the short pins 209 are separated from the tapered holes 204a of the short tube 204. When the electromagnetic push rod 203 continues to contract, the retaining spring 211 at the top of the short column 206 presses down the top of the short pins 209, ensuring that the sleeve 208 contracts into the short tube 204, so that the sleeve 208 is separated from the bottom surface of the workpiece, leaving space for the tool to penetrate the workpiece.

[0039] When the electromagnetic push rod 203 is pushed upward, Figure 5 As shown, the workpiece needs to be clamped and fixed on the support plate 201 first. The short column 206 tends to push the short pin 209 open. However, since the resistance of the sliding sleeve 208 sliding upward is less than the resistance of the opening coil spring 210, the short column 206 is able to push the sliding sleeve 208 upward by pushing up the short pin 209. When the sliding sleeve 208 hits the bottom surface of the workpiece, the short column 206 is able to push the short pin 209 open, so that the short pin 209 is inserted into the tapered hole 204a on the side wall of the short tube 204 through its chamfered end. The chamfer at the end of the short pin 209 fits with the inner wall of the tapered hole 204a to provide highly precise positioning of the sliding sleeve 208.

[0040] The installation position of each support component corresponds to the coordinates of the X-axis and Y-axis of the machine tool. When the spindle moves to the preset support component coordinate position, the machine tool system retracts the electromagnetic push rod 203 at the corresponding position. When the spindle leaves this position, the electromagnetic push rod 203 is ejected.

[0041] In summary, the present invention integrates the two processes of milling and drilling and tapping into one machine tool, the milling and drilling and tapping processing do not interfere with each other, and the functional areas are safely isolated. The double slides 200 alternately move in the two processing areas to load and unload materials, thereby realizing efficient multi-process processing of the product by a single machine tool. The present invention also designs a special support component for the slide 200 in the structural layout to improve the compatibility of the equipment with plate processing.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A double-spindle double-table gantry drilling and milling machine, comprising a fixed gantry bed (100), characterized in that: It also includes two pairs of Y-axis parallel linear rails installed on the platform of the fixed gantry bed (100), each pair of Y-axis linear rails are servo-driven and connected to the slide (200), and a pair of X-axis parallel linear rails are installed on both sides of the gantry of the fixed gantry bed (100), and the two pairs of X-axis linear rails are servo-driven and connected to the scanning spindle (101) and the drilling and tapping spindle (102), and the gantry of the fixed gantry bed (100) is located in the middle of the Y-axis linear rails; The top of the slide (200) is fixedly connected to a support plate (201), and the support plate (201) is fixedly connected to a support assembly, which includes an electromagnetic push rod (203) fixedly connected to the bottom surface of the support plate (201), and a short diameter tube (204) fixedly connected to the top surface of the support plate (201). The large diameter end of the short tube (204) opens upward, and the push rod of the electromagnetic push rod (203) coaxially passes through the short tube (204). The top of the push rod of the electromagnetic push rod (203) is machined with a short column (205). The short tube (20 4) The inner sliding sleeve is connected with a sliding sleeve (208), and an "L" short pin (209) is provided between the inner wall of the sliding sleeve (208) and the short column (205). One short side of the short pin (209) passes through the inner wall of the sliding sleeve (208) and is plugged into the inner wall of the short tube (204), and the other short side of the short pin (209) is in sliding contact with the peripheral wall of the short column (205). A pair of the short pins (209) are symmetrically distributed about the short column (205), and a coil spring (210) is sleeved between the top ends of the two short pins (209).

2. The dual-spindle dual-table gantry drilling and milling machine according to claim 1, characterized in that: A partition (103) is provided between the gantry columns of the fixed gantry bed (100), and the partition (103) is provided with slots matching the moving paths of the two sets of slides (200), and each slot is provided with a pneumatic vertically movable baffle (104).

3. The dual-spindle dual-table gantry drilling and milling machine according to claim 2, characterized in that: The exterior of the fixed gantry bed (100) is sleeved with a shell (105), and safety doors (106) are provided at both ends of the shell (105) located on the Y-axis rail.

4. The dual-spindle dual-table gantry drilling and milling machine according to claim 1, characterized in that: The outer wall of the small-diameter end of the reducing short tube (204) is threadedly fastened to the threaded hole provided on the supporting plate (201).

5. The dual-spindle dual-table gantry drilling and milling machine according to claim 1, characterized in that: A conical surface (207) is provided between the short column (205) and the push rod of the electromagnetic push rod (203), and a groove (209a) is provided on the outer wall of the "L"-shaped bent outer corner of the short pin (209) to fit with the conical surface (207). A conical hole (204a) is provided on the side wall of the short tube (204), and one end of the short pin (209) is matched and plugged with the conical hole (204a) along the radial direction of the short tube (204). A groove (209b) with an arc surface is provided on the peripheral wall of the other end of the short pin (209) to fit with the peripheral wall of the short column (205).

6. The dual-spindle dual-table gantry drilling and milling machine according to claim 5, characterized in that: The top end of the sliding sleeve (208) is set as a circular groove (208a), and the bottom of the sliding sleeve (208) is provided with a circular sliding groove (208b), and one end of the two short pins (209) and the short column (205) are slidably connected to the sliding groove (208b).

7. The dual-spindle dual-table gantry drilling and milling machine according to claim 6, characterized in that: The coil spring (210) is arranged at the bottom of the circular groove (208a), and the inner diameter of the coil spring (210) after contraction is smaller than the size obtained by subtracting the diameter of the short column (205) from twice the diameter of the short pin (209).

8. The dual-spindle dual-table gantry drilling and milling machine according to claim 5, characterized in that: The top of the short column one (205) is machined to form a short column two (206), and the top of the short column two (206) is clamped with a retaining spring (211), and the outer diameter of the retaining spring (211) is greater than the diameter of the short column one (205).

9. The dual-spindle dual-table gantry drilling and milling machine according to claim 8, characterized in that: The radius of the short column 1 (205) minus the radius of the short column 2 (206) is greater than the depth of the end of the short pin (209) inserted into the tapered hole (204a).

10. The dual-spindle dual-table gantry drilling and milling machine according to claim 1, characterized in that: The fixed gantry bed (100) platform is provided with chip grooves (107) on both sides of the two pairs of Y-axis rails, the cross-sectional profile of the chip groove (107) is semicircular, and a spiral screw (108) is coaxially sleeved in the chip groove (107), and one end of the screw (108) is fixedly coaxially connected to a pulley and is rotatably connected to the fixed gantry bed (100) sheet metal.

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