Gantry machining center with span-adjustable rotary table

Abstract

The gantry machining center with the span-adjustable rotary table comprises a portal frame, the portal frame comprises a base, two stand columns and a top plate, a workpiece containing space is formed between the two stand columns, and two rotary table structures are symmetrically arranged on the base and used for clamping and rotating a workpiece. A span adjusting structure used for controlling the two rotary table structures to move synchronously and symmetrically is arranged between the two rotary table structures. By means of the span adjusting structure, the span between the two rotary table structures can be adjusted according to the size of a workpiece, the two rotary table structures can synchronously and symmetrically move, it is guaranteed that the workpiece is located in the center of the containing space all the time, enough machining space is provided for the workpiece, the stability of the whole structure is guaranteed, and deviation and vibration are not prone to occurring.

Description

Technical Field

[0001] The utility model relates to a gantry processing center, in particular to a gantry processing center with a span-adjustable rotating table. Background Art

[0002] The gantry machining center is a semi-automatic parts processing machine tool equipment that can be used for rough and fine processing of various metal parts. With the widespread application of large aluminum die castings in the automotive industry, the use of gantry machining centers with four-axis rotary tables is increasing.

[0003] At present, the turntable of the gantry machining center is generally directly installed on the column, and the span between the turntables is fixed and cannot be adjusted. It cannot be used for workpieces that are too large or too small, and its application range is limited. In addition, due to the asymmetric setting of the turntable, the workpiece will drive the gantry to deviate to one side during the rotation process, causing vibration, which not only affects the structural stability of the gantry itself, but also affects the processing accuracy. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a gantry machining center with a turntable with adjustable span, so as to solve the problem that the span between turntables in the prior art is fixed and cannot be adjusted.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a gantry machining center with a turntable with an adjustable span, including a gantry, the gantry including a base, two columns and a top plate, a workpiece accommodating space is formed between the two columns, two turntable structures are symmetrically arranged on the base for clamping and rotating the workpiece, and a span adjustment structure is provided between the two turntable structures for controlling the synchronous and symmetrical movement of the two.

[0006] In one embodiment of the utility model, the span adjustment structure includes a first guide rail and a second guide rail arranged in parallel, and a first transmission member slidably arranged on the first guide rail and a second transmission member slidably arranged on the second guide rail, the first transmission member includes a first rack, the second transmission member includes a second rack having the same module as the first rack, the first rack and the second rack are respectively linked to a gear at a center position, and the gear has the same module as the first rack or the second rack.

[0007] In an embodiment of the present invention, the first transmission member and the second transmission member are respectively located at two ends of the base, and the first rack and the second rack are respectively located at two sides of the gear.

[0008] In one embodiment of the utility model, the first transmission member is slidably disposed at the front end of the first guide rail, the front end of the second guide rail is slidably provided with a first slide seat, and the first slide seat and the front end of the first transmission member are connected via a first connecting plate;

[0009] The second transmission member is slidably disposed at the rear end of the second guide rail, a second slide seat is slidably disposed at the rear end of the first guide rail, and the second slide seat and the front end of the second transmission member are connected via a second connecting plate;

[0010] The two turntable structures are respectively installed on the first connecting plate and the second connecting plate.

[0011] In an embodiment of the present invention, the span adjustment structure further includes a first driving structure, and the first driving structure is located below the gear and is used to drive the gear to rotate or stop.

[0012] In one embodiment of the present invention, the span adjustment structure also includes a second driving structure, which is located outside the first transmission member / the second transmission member and is used to drive the first transmission member / the second transmission member to move along the first guide rail / the second guide rail.

[0013] In one embodiment of the utility model, a slidable transverse slide is provided on the top plate, a liftable longitudinal slide is provided on the transverse slide, a self-locking chuck is provided at the lower part of the longitudinal slide, and a drill bit is provided in the self-locking chuck.

[0014] As described above, the gantry machining center with a span-adjustable turntable of the utility model has the following beneficial effects:

[0015] 1. The utility model can not only adjust the span between the two turntable structures according to the size of the workpiece through the span adjustment structure, but also the two turntable structures can move synchronously and symmetrically to ensure that the workpiece is always located in the center of the accommodating space, provide sufficient processing space for the workpiece, and ensure the stability of the overall structure, which is not easy to deviate and vibrate.

[0016] 2. The utility model can make the displacement of the transmission member smoother and less likely to deviate by providing a slide seat connected to the transmission member; and the slide seat can also bear a portion of the gravity of the turntable structure and the workpiece, preventing the heavy workpiece from crushing the span adjustment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model discloses a structural schematic diagram of a gantry machining center with a span-adjustable turntable.

[0018] Figure 2 It is a structural schematic diagram of the span adjustment structure disclosed in the utility model.

[0019] Component number description

[0020] 1. Gantry; 11. Base; 12. Column; 13. Top plate; 2. Span adjustment structure; 21. First guide rail; 22. First transmission member; 221. First rack; 23. First slide; 24. First connecting plate; 25. Second guide rail; 26. Second transmission member; 261. Second rack; 27. Second slide; 28. Second connecting plate; 29. ​​Gear; 31. Horizontal slide; 32. Longitudinal slide; 33. Self-locking chuck; 4. Turntable structure. DETAILED DESCRIPTION

[0021] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] See also Figure 1 The utility model provides a gantry machining center with a span-adjustable turntable, including a gantry 1, wherein the gantry 1 includes a base 11, two columns 12 and a top plate 13, wherein a workpiece accommodation space is formed between the two columns 12, and two turntable structures 4 are symmetrically arranged on the base 11 for clamping and rotating the workpiece, and a span adjustment structure 2 for controlling the synchronous and symmetrical movement of the two turntable structures 4 is arranged between the two turntable structures 4. The gantry machining center of the utility model can not only adjust the span between the two turntable structures 4 according to the size of the workpiece through the span adjustment structure 2, but also the two turntable structures 4 can move synchronously and symmetrically, ensuring that the workpiece is always located at the center of the accommodation space, providing sufficient processing space, and ensuring the stability of the overall structure, which is not easy to deviate and generate vibration.

[0023] Specifically, refer to Figure 2 The span adjustment structure 2 includes a first guide rail 21 and a second guide rail 25 arranged in parallel, and a first transmission member 22 slidably arranged on the first guide rail 21 and a second transmission member 26 slidably arranged on the second guide rail 25, the first transmission member 22 includes a first rack 221, the second transmission member 26 includes a second rack 261 having the same module as the first rack 221, the first rack 221 and the second rack 261 are respectively linked to a gear 29 at the center position, and the gear 29 has the same module as the first rack 221 or the second rack 261.

[0024] Furthermore, the first transmission member 22 and the second transmission member 26 are respectively located at two ends of the base 11, and the first rack 221 and the second rack 261 are respectively located at two sides of the gear 29. The first rack 221 and the second rack 261 are relatively meshed on two sides of the gear 29, so that the movement directions of the two are opposite, and the modules of the three are the same, so that the rotation of the gear 29 can drive the first rack 221 and the second rack 261 to move synchronously and equidistantly toward each other.

[0025] Furthermore, the first transmission member 22 is slidably disposed at the front end of the first guide rail 21, and the front end of the second guide rail 25 is slidably provided with a first slide seat 23, and the first slide seat 23 and the front end of the first transmission member 22 are connected via a first connecting plate 24; the second transmission member 26 is slidably disposed at the rear end of the second guide rail 25, and the rear end of the first guide rail 21 is slidably provided with a second slide seat 27, and the second slide seat 27 and the front end of the second transmission member 26 are connected via a second connecting plate 28; the two turntable structures 4 are respectively mounted on the first connecting plate 24 and the second connecting plate 28. The two guide rails are arranged in parallel and symmetrically, and by respectively providing slide seats connected to the transmission members, the displacement of the transmission members can be made smoother and less likely to deviate; and the slide seats can also bear a part of the gravity of the turntable structure 4 and the workpiece to prevent the heavy workpiece from crushing the span adjustment structure 2.

[0026] In one embodiment of the present invention, the span adjustment structure 2 further includes a first driving structure, which is located below the gear 29 and is used to drive the gear 29 to rotate or stop, thereby controlling the transmission members at both ends to move into place. The first driving structure can be a rotating driving member such as a motor.

[0027] In another embodiment of the present invention, the span adjustment structure 2 further includes a second driving structure, which is located outside the first transmission member 22 / second transmission member 26 and is used to drive the first transmission member 22 / second transmission member 26 to move along the first guide rail 21 / second guide rail 25. The second driving structure can be a cylinder, a lead screw or other structure to control the horizontal displacement of the transmission member at one end, thereby driving the gear 29 to rotate, so that the transmission member at the other end can be synchronously and symmetrically displaced.

[0028] In the gantry machining center, a slidable transverse slide 31 is provided on the top plate 13, a vertical slide 32 capable of being raised and lowered is provided on the transverse slide 31, a self-locking chuck 33 is provided at the lower part of the vertical slide 32, and a drill is provided in the self-locking chuck 33. By providing the transverse slide 31 and the vertical slide 32, the drill can be adjusted up and down, left and right, and all-round processing of the workpiece is achieved.

[0029] The utility model can adjust the span between the two turntable structures according to the size of the workpiece through the span adjustment structure, and the two turntable structures can move synchronously and symmetrically to ensure that the workpiece is always located in the center of the accommodating space, provide sufficient processing space for the workpiece, and ensure the stability of the overall structure, which is not easy to deviate and vibrate. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0030] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present utility model without substantially changing the technical content.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A gantry machining center with a span-adjustable turntable, characterized in that: It includes a gantry, which includes a base, two columns and a top plate, a workpiece accommodating space is formed between the two columns, two turntable structures are symmetrically arranged on the base for clamping and rotating the workpiece, and a span adjustment structure for controlling the synchronous and symmetrical movement of the two turntable structures is arranged between the two turntable structures.

2. A gantry machining center with a span-adjustable turntable according to claim 1, characterized in that: The span adjustment structure includes a first guide rail and a second guide rail arranged in parallel, and a first transmission member slidably arranged on the first guide rail and a second transmission member slidably arranged on the second guide rail, the first transmission member includes a first rack, the second transmission member includes a second rack having the same module as the first rack, the first rack and the second rack are respectively linked to a gear at a center position, and the gear has the same module as the first rack or the second rack.

3. A gantry machining center with a span-adjustable turntable according to claim 2, characterized in that: The first transmission member and the second transmission member are respectively located at two ends of the base, and the first rack and the second rack are respectively located at two sides of the gear.

4. A gantry machining center with a span-adjustable turntable according to claim 3, characterized in that: The first transmission member is slidably disposed at the front end of the first guide rail, the front end of the second guide rail is slidably provided with a first slide seat, and the first slide seat and the front end of the first transmission member are connected via a first connecting plate; The second transmission member is slidably disposed at the rear end of the second guide rail, a second slide seat is slidably disposed at the rear end of the first guide rail, and the second slide seat and the front end of the second transmission member are connected via a second connecting plate; The two turntable structures are respectively installed on the first connecting plate and the second connecting plate.

5. A gantry machining center with a span-adjustable turntable according to any one of claims 2 to 4, characterized in that: The span adjustment structure also includes a first driving structure, which is located below the gear and is used to drive the gear to rotate or stop.

6. A gantry machining center with a span-adjustable turntable according to any one of claims 1 to 4, characterized in that: The span adjustment structure also includes a second driving structure, which is located outside the first transmission member / the second transmission member and is used to drive the first transmission member / the second transmission member to move along the first guide rail / the second guide rail.

7. The gantry machining center with a span-adjustable turntable according to claim 1, characterized in that: The top plate is provided with a slidable transverse slide, the transverse slide is provided with a liftable longitudinal slide, the lower part of the longitudinal slide is provided with a self-locking chuck, and a drill is provided in the self-locking chuck.

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