Quick positioning device for CNC (computer numerical control) machining center clamp

Abstract

The utility model belongs to the technical field of clamp positioning devices, and particularly relates to a CNC machining center clamp rapid positioning device which comprises a base, a first guide rail installed on the top of the base, a sliding block installed in the first guide rail in a sliding mode, a supporting frame arranged on the top of the sliding block, and a second guide rail installed on the top of the supporting frame. A lifting guide block is slidably arranged in the second guide rail, an upper clamping block is in threaded connection with the side face of the lifting guide block, a crank penetrates through and is rotationally installed on the side face of the second guide rail, a first bevel gear is connected to one end of the crank, a screw is rotationally installed on the inner side of the second guide rail, a second bevel gear is arranged on the outer side of the screw in a sleeving mode, and the second bevel gear and the first bevel gear are meshed. According to the clamping device, when workpieces with different lengths are clamped, it can be guaranteed that the clamping positions are located at the positions close to the tops of the workpieces and the positions close to the bottoms of the workpieces correspondingly, and therefore the clamping stability of the workpieces is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fixture positioning device, specifically relates to a CNC machining center fixture quick positioning device. BACKGROUND

[0002] CNC machining center is a kind of high-precision, high-efficiency automatic processing equipment widely used in modern manufacturing industry, including CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine etc.

[0003] When using CNC machining center to process vertically placed cylindrical workpieces, clamps are needed to clamp and fix the workpieces, but in the prior art, when clamping and fixing these workpieces, the existing clamps can only clamp and fix the bottom part close to the workpiece, but when processing a workpiece with a long length, the top part of the workpiece lacks fixation, so in the processing process, the part close to the top of the workpiece is prone to slight shaking due to vibration in the processing process, affecting the fixation stability SUMMARY

[0004] To solve the above problems, the utility model provides a CNC machining center fixture quick positioning device, which can ensure that the clamping positions are located close to the top and bottom of the workpiece respectively when clamping workpieces of different lengths, thereby improving the clamping stability of the workpiece.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a CNC machining center fixture quick positioning device, comprising a base, a first guide rail is installed on the top of the base, a sliding block is slidably installed in the first guide rail, a support frame is arranged on the top of the sliding block, a second guide rail is installed on the top of the support frame, a lifting guide block is slidably arranged in the second guide rail, an upper clamping block is screwed on the side surface of the lifting guide block, a rocking handle is rotatably installed through the side surface of the second guide rail, a first bevel gear is connected to one end of the rocking handle, a screw rod is rotatably installed on the inner side of the second guide rail, a second bevel gear is sleeved on the outer side of the screw rod, the second bevel gear and the first bevel gear are engaged, a clamping block screw seat is installed on the top of the support frame, a lower clamping block is screwed on the side surface of the clamping block screw seat, a cylinder mounting seat is installed on the top of the base, a cylinder is installed on the side surface of the cylinder mounting seat, a connecting plate is installed on one end of the cylinder, a push-pull rod is connected to the side surface of the connecting plate, and one end of the push-pull rod is fixedly connected with the sliding block.

[0006] The beneficial effects of the utility model are: when the device is used, the height of the lifting guide block and the upper clamping block is adjusted according to the length of the cylindrical workpiece to be clamped, when the lifting guide block and the upper clamping block are adjusted, the handle is rotated, the first bevel gear is rotated by the handle, the second bevel gear and the screw rod are rotated by the first bevel gear, the lifting guide block is driven to slide in the second guide rail by the transmission between the screw rod and the lifting guide block, thereby the height of the lifting guide block and the upper clamping block is adjusted, the adjusting height of the lifting guide block and the upper clamping block can be observed by the scale line, the distance between the upper clamping block and the lower clamping block is changed by adjusting the height of the upper clamping block, so as to adapt to workpieces of different lengths, the upper clamping block and the lower clamping block can be guaranteed to be located at positions close to the top and the bottom of the workpiece respectively when clamping workpieces of different lengths, thereby the clamping stability of the workpiece is improved.

[0007] In order to show the height of the lifting guide block extending from the second guide rail:

[0008] As a further improvement of the above technical solution: the outer side of the lifting guide block is provided with a scale line.

[0009] The beneficial effects of the improvement are: the scale line is used to indicate the height of the lifting guide block extending from the second guide rail.

[0010] In order to discharge the chips in the machining process:

[0011] As a further improvement of the above technical solution: the top and the bottom of the base are provided with a chip discharge port.

[0012] The beneficial effects of the improvement are: the chip discharge port is used to discharge the chips in the machining process.

[0013] In order to drive the lifting guide block to lift and lower:

[0014] As a further improvement of the above technical solution: the bottom of the lifting guide block is provided with a screw hole, and the lifting guide block is threadedly connected with the screw rod through the screw hole.

[0015] The beneficial effects of the improvement are: when the screw rod rotates, the lifting guide block is driven to lift and lower by the transmission between the screw rod and the lifting guide block.

[0016] In order to avoid slipping during the rotation of the handle:

[0017] As a further improvement of the above technical solution: the outer side of the handle is provided with an antiskid rubber pad.

[0018] The beneficial effects of the improvement are: the antiskid rubber pad is used to improve the friction between the hand and the handle, and avoid slipping during the rotation of the handle.

[0019] The parts not involved in the device are the same as or can be implemented by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front axis measurement schematic diagram of the utility model;

[0021] Figure 2 It is a sectional view schematic diagram of the utility model;

[0022] Figure 3 It is a local sectional view schematic diagram of the utility model;

[0023] Figure 4 It is a sectional structure schematic diagram of the second guide rail and the lifting guide block in the utility model;

[0024] In the drawing: 1, base; 2, first guide rail; 3, sliding block; 4, support frame; 5, second guide rail; 6, lifting guide block; 7, upper clamping block; 8, crank; 9, first bevel gear; 10, screw; 11, second bevel gear; 12, clamping block screwing seat; 13, lower clamping block; 14, cylinder mounting seat; 15, cylinder; 16, connecting plate; 17, push-pull rod; 18, scale line; 19, chip removal port. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0026] As Figures 1-4 shown, a CNC numerical control machining center clamp rapid positioning device, including base 1, the top of base 1 is installed with first guide rail 2, the inside of first guide rail 2 is slidably installed with sliding block 3, the top of sliding block 3 is equipped with support frame 4, the top of support frame 4 is installed with second guide rail 5, the inside of second guide rail 5 is slidably equipped with lifting guide block 6, the side surface of lifting guide block 6 is screwed with upper clamping block 7, the side surface of second guide rail 5 is penetrated and rotatably installed with crank 8, one end of crank 8 is connected with first bevel gear 9, the inside of second guide rail 5 is rotatably installed with screw 10, the outside of screw 10 is equipped with second bevel gear 11, second bevel gear 11 and first bevel gear 9 are engaged, the top of support frame 4 is installed with clamping block screwing seat 12, the side surface of clamping block screwing seat 12 is screwed with lower clamping block 13, the top of base 1 is installed with cylinder mounting seat 14, the side surface of cylinder mounting seat 14 is installed with cylinder 15, one end of cylinder 15 is installed with connecting plate 16, the side surface of connecting plate 16 is connected with push-pull rod 17, one end of push-pull rod 17 is fixedly connected with sliding block 3.

[0027] When the device is used, the height of the lifting guide block 6 and the upper clamping block 7 is adjusted according to the length of the cylindrical workpiece to be clamped. When adjusting the lifting guide block 6 and the upper clamping block 7, the handle 8 is rotated, the first bevel gear 9 is driven to rotate by the handle 8, the second bevel gear 11 and the screw rod 10 are driven to rotate by the first bevel gear 9, and the lifting guide block 6 is driven to slide in the second guide rail 5 by the transmission between the screw rod 10 and the lifting guide block 6, so as to adjust the height of the lifting guide block 6 and the upper clamping block 7. The adjusting height of the lifting guide block 6 and the upper clamping block 7 can be observed through the scale line 18. The spacing between the upper clamping block 7 and the lower clamping block 13 is changed by adjusting the height of the upper clamping block 7, so as to adapt to workpieces of different lengths. The upper clamping block 7 and the lower clamping block 13 can ensure that the clamping positions are located near the top and bottom of the workpiece respectively when clamping workpieces of different lengths, thereby improving the clamping stability of the workpiece.

[0028] The outer side of the lifting guide block 6 is provided with a scale line 18.

[0029] The scale line 18 is used to indicate the height of the lifting guide block 6 extending out of the second guide rail 5.

[0030] The top and bottom of the base 1 are provided with a chip removal opening 19.

[0031] The chip removal opening 19 is used for the discharge of chips during processing.

[0032] The bottom of the lifting guide block 6 is provided with a screw hole, and the lifting guide block 6 is threadedly connected with the screw rod 10 through the screw hole.

[0033] When the screw rod 10 rotates, the lifting guide block 6 is driven to lift by the transmission between the screw rod 10 and the lifting guide block 6.

[0034] The outer side of the handle 8 is provided with a non-slip rubber pad.

[0035] The non-slip rubber pad is used to improve the friction between the hand and the handle 8, and to avoid slipping during the rotation of the handle 8.

[0036] The working principle and use process of the utility model: when the device is used, the height of the lifting guide block 6 and the upper clamping block 7 is adjusted according to the length of the cylindrical workpiece to be clamped, the rocking handle 8 is rotated when the lifting guide block 6 and the upper clamping block 7 are adjusted, the first bevel gear 9 is driven to rotate through the rocking handle 8, the second bevel gear 11 and the screw rod 10 are driven to rotate through the first bevel gear 9, the lifting guide block 6 is driven to slide in the second guide rail 5 through the transmission between the screw rod 10 and the lifting guide block 6, so that the height of the lifting guide block 6 and the upper clamping block 7 is adjusted, the adjusting height of the lifting guide block 6 and the upper clamping block 7 can be observed through the scale line 18, the distance between the upper clamping block 7 and the lower clamping block 13 is changed through the height adjustment of the upper clamping block 7, so that the workpiece of different lengths is adapted, the upper clamping block 7 and the lower clamping block 13 can be guaranteed to be located at the positions close to the top and the bottom of the workpiece respectively when clamping the workpiece of different lengths, so that the clamping stability of the workpiece is improved, the workpiece is placed between the left and right groups of upper clamping blocks 7 and the left and right groups of lower clamping blocks 13, the connecting plate 16 and the push-pull rod 17 are moved through the piston rod extension action of the control cylinder 15, the left and right sliders 3 are driven to move towards each other, so that the left and right groups of supporting frames 4 and the left and right groups of upper clamping blocks 7 and lower clamping blocks 13 are driven to move towards each other, the workpiece is clamped and fixed, and then the workpiece can be consolidated.

[0037] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] The principle and implementation mode of the utility model are described by applying specific examples, and the above examples are only used to help understand the method and core idea of the utility model. It should be pointed out that due to the limitation of language expression, there are infinite specific structures objectively, and for ordinary technical personnel in the technical field, some improvements, decorations or changes can be made without departing from the principle of the utility model, and the above technical features can also be combined in an appropriate way; the improvements, decorations, changes or combinations, or the direct application of the concept and technical scheme of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A CNC machining center fixture rapid positioning device, characterized in that: The utility model provides a kind of lifting device, including base (1), the top of base (1) is equipped with first guide rail (2), the inside sliding of first guide rail (2) is equipped with sliding block (3), the top of sliding block (3) is equipped with support frame (4), the top of support frame (4) is equipped with second guide rail (5), the inside sliding of second guide rail (5) is equipped with lifting guide block (6), the side of lifting guide block (6) is screwed with upper clamping block (7), the side of second guide rail (5) is equipped with rocking handle (8) and is rotatably installed, one end of rocking handle (8) is connected with first bevel gear (9), the inside of second guide rail (5) is rotatably installed with screw rod (10), the outside of screw rod (10) is equipped with second bevel gear (11), second bevel gear (11), first bevel gear (9) are engaged between, the top of support frame (4) is equipped with clamping block screwing seat (12), the side of clamping block screwing seat (12) is screwed with lower clamping block (13), the top of base (1) is equipped with cylinder mounting seat (14), the side of cylinder mounting seat (14) is equipped with cylinder (15), one end of cylinder (15) is equipped with connecting plate (16), the side of connecting plate (16) is connected with push-pull rod (17), one end of push-pull rod (17) is fixedly connected with sliding block (3).

2. The quick positioning device of CNC machining center fixture according to claim 1, characterized in that: The outside of the lifting guide block (6) is provided with a scale line (18).

3. The quick positioning device of CNC machining center fixture according to claim 1, characterized in that: A chip removal opening (19) is provided between the top and bottom of the base (1).

4. The quick positioning device of CNC machining center fixture according to claim 1, characterized in that: The bottom of the lifting guide block (6) is provided with a threaded hole, and the lifting guide block (6) is threadedly connected with the screw rod (10) through the threaded hole.

5. The quick positioning device for CNC machining center fixture according to claim 1, characterized in that: The outside of the rocking handle (8) is provided with a non-slip rubber pad.

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