CN216463235U - A workpiece positioning device for CNC machine tools - Google Patents

Abstract

The utility model discloses a workpiece positioning device for a numerical control machine tool, which comprises a mounting plate and a support frame, wherein the support frame is arranged at the top end of the mounting plate, the top end of the support frame is fixedly connected with a placing groove, and two groups of positioning plates are symmetrically arranged in the placing groove. This work piece positioner for digit control machine tool is through having seted up two sets of concertina holes respectively at inside top and the bottom of locating plate, the in-process that the locating plate is close to each other in the inside both sides of standing groove, the guard plate of locating plate one side can at first contact with the work piece, later the locating plate continues the motion, the spring is compressed gradually this moment, the guard plate also constantly increases until pressing from both sides the work piece tight location for the clamp power degree of work piece, so not only can avoid damaging the work piece to the too big work piece that leads to of the instantaneous pressure of work piece, and the elasticity that resets that utilizes the spring to exist all the time can avoid the work piece pine to take off, what solve does not have the structure of buffering, not only cause the damage to the work piece easily, the problem of the phenomenon that the work piece pine takes off also appears easily.

Description

A workpiece positioning device for CNC machine tools

technical field

The utility model relates to the technical field of numerical control machine tools, in particular to a workpiece positioning device for numerical control machine tools.

Background technique

CNC machine tool is an automatic machine tool equipped with a program control system, which can automatically process parts according to the shape and size required by the drawing. However, the current workpiece positioning device for CNC machine tools has a complex structure and slow action, which is very inconvenient to use; it does not have a buffer structure, which is not only easy to damage the workpiece, but also prone to loosening of the workpiece; it cannot automatically adjust the angle of the workpiece , it is inconvenient to process the workpiece at multiple angles, and now the workpiece positioning device for CNC machine tools is improved in view of the above problems.

Utility model content

The purpose of the present invention is to provide a workpiece positioning device for a numerically controlled machine tool, so as to solve the problems of complex structure, slow action and very inconvenient use in the above-mentioned background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a workpiece positioning device for a numerically controlled machine tool, comprising a mounting plate and a support frame, the support frame is arranged on the top of the mounting plate, and the top of the support frame is fixedly connected with a mounting plate. There are two sets of positioning plates symmetrically arranged inside the placement slot, and a buffer protection structure is arranged on the positioning plate. The buffer protection structure includes a protection plate, a telescopic hole, a telescopic rod and a spring. The bottom of the placement slot is The end is provided with a slot, and an angle adjustment mechanism is arranged between the top end of the mounting plate and the bottom end of the support frame. The angle adjustment mechanism includes a support shaft, a stepping motor, a toothed plate and a gear. A quick-drive clamping mechanism is provided, and the quick-drive clamping mechanism includes a hydraulic cylinder, a sliding rod, a connecting rod, a connecting rod and a sliding sleeve.

Preferably, the hydraulic cylinder is fixedly installed at the middle position of the inner bottom end of the support frame, the top end inside the support frame is fixedly connected with a sliding rod, and two sets of sliding sleeves are symmetrically arranged on both sides outside the sliding rod. The bottom end of the sliding sleeve is articulated with a connecting rod, the other end of the connecting rod is articulated with the output end of the hydraulic cylinder, and the top end of the sliding sleeve is fixedly connected with a connecting rod.

Preferably, the top end of the connecting rod penetrates through the interior of the slot and extends to the interior of the placement groove, and the top end of the connecting rod is fixedly connected with the bottom end of the positioning plate.

Preferably, the top and bottom ends of the positioning plate are respectively provided with two sets of telescopic holes, a telescopic rod is penetrated through the interior of the telescopic hole, a protective plate is fixedly connected to one side of the telescopic rod, and the outside of the telescopic rod is A spring is sleeved on the side close to the protective plate.

Preferably, the support shaft is movably connected at the middle position of the top end of the mounting plate, the top end of the support shaft is fixedly connected with the middle position of the bottom end of the support frame, and a toothed plate is fixedly connected to the outside of the support shaft near the bottom end , the stepping motor is fixedly installed on one side of the top end of the mounting plate, and the output end of the stepping motor is fixedly connected with a gear.

Preferably, the support shaft and the gear are perpendicular to each other, and the support shaft and the gear are meshed and connected.

Compared with the prior art, the beneficial effects of the present utility model are: the workpiece positioning device for CNC machine tools not only realizes simple structure and rapid action, but also is very convenient to use, realizes a structure with buffering, and is not easy to cause damage to the workpiece. , it is not easy for the workpiece to loosen, and the angle of the workpiece can be automatically adjusted, which is convenient for multi-angle processing of the workpiece;

(1) It is fixedly installed at the middle position of the inner bottom end of the support frame through a hydraulic cylinder. The top end of the support frame is fixedly connected with a sliding rod. Two sets of sliding sleeves are symmetrically arranged on both sides of the outer sliding rod, and the bottom end of the sliding sleeve is hinged. There is a connecting rod, the other end of the connecting rod is hinged with the output end of the hydraulic cylinder, and the top of the sliding sleeve is fixedly connected with a connecting rod. During the shrinking process of the cylinder, the connecting rod will simultaneously pull the sliding sleeves on both sides of the sliding rod to the middle. , the workpiece positioning device not only has a simple structure, but also moves quickly and is very convenient to use;

(2) Two sets of telescopic holes are respectively opened at the top and bottom ends of the positioning plate. A telescopic rod runs through the interior of the telescopic hole. One side of the telescopic rod is fixedly connected with a protective plate, and the outside of the telescopic rod is close to the side of the protective plate. A spring is attached to the sleeve. During the process of the positioning plates on both sides of the placement groove approaching each other, the protective plate on one side of the positioning plate will first contact the workpiece, and then the positioning plate will continue to move. At this time, the spring is gradually compressed, and the protective plate gives the workpiece The clamping force is also continuously increased until the workpiece is clamped and positioned, which can not only avoid damage to the workpiece due to excessive instantaneous pressure on the workpiece, but also prevent the workpiece from loosening by using the always-existing reset elastic force of the spring;

(3) It is movably connected at the middle position of the top end of the mounting plate through the support shaft, the top end of the support shaft is fixedly connected with the middle position of the bottom end of the support frame, the outside of the support shaft is fixedly connected with a toothed plate near the bottom end, and the stepping motor is fixed Installed on one side of the top of the mounting plate, the output end of the stepper motor is fixedly connected with a gear. When in use, start the stepper motor, the stepper motor drives the gear to rotate, and the gear will drive the support shaft to rotate on the mounting plate through the gear plate. The support shaft will drive the support frame to rotate, so that the clamped and positioned workpiece can be rotated automatically, thereby facilitating multi-angle machining of the workpiece.

Description of drawings

Fig. 1 is the front view sectional structure schematic diagram of the present utility model;

Fig. 2 is the top view structure schematic diagram of the placement groove of the present invention;

Fig. 3 is the front view enlarged structural schematic diagram of the support shaft of the present utility model;

FIG. 4 is a schematic diagram of an enlarged partial cross-sectional structure at A in FIG. 1 of the present invention.

In the figure: 1. Mounting plate; 2. Support shaft; 3. Hydraulic cylinder; 4. Support frame; 5. Slide rod; 6. Placement slot; 7. Positioning plate; 8. Stepper motor; 9. Slotted; 10 , protective plate; 11, telescopic hole; 12, telescopic rod; 13, spring; 14, gear plate; 15, gear; 16, connecting rod; 17, connecting rod; 18, sliding sleeve.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to Figures 1-4, a workpiece positioning device for CNC machine tools, including a mounting plate 1 and a support frame 4, the support frame 4 is arranged on the top of the mounting plate 1, the top of the support frame 4 is fixedly connected with a placement slot 6, the placement slot The interior of 6 is symmetrically provided with two sets of positioning plates 7. The positioning plate 7 is provided with a buffer protection structure. The buffer protection structure includes a protection plate 10, a telescopic hole 11, a telescopic rod 12 and a spring 13. The top and bottom ends of the positioning plate 7 Two sets of telescopic holes 11 are respectively opened. A telescopic rod 12 runs through the interior of the telescopic hole 11. One side of the telescopic rod 12 is fixedly connected with a protective plate 10, and a side of the telescopic rod 12 close to the protective plate 10 is sleeved with a spring 13. During the process of the positioning plates 7 on both sides of the inside of the placement groove 6 approaching each other, the protective plate 10 on one side of the positioning plate 7 will first contact the workpiece, and then the positioning plate 7 continues to move. At this time, the spring 13 is gradually compressed, and the protective plate 10 The clamping force for the workpiece is also continuously increased until the workpiece is clamped and positioned, which can not only avoid damage to the workpiece due to excessive instantaneous pressure on the workpiece, but also can prevent the workpiece from loosening by using the always-existing restoring force of the spring 13. The bottom end is provided with a slot 9, and an angle adjustment mechanism is arranged between the top end of the mounting plate 1 and the bottom end of the support frame 4. The angle adjustment mechanism includes a support shaft 2, a stepping motor 8, a toothed disc 14 and a gear 15. The support shaft 2 It is movably connected at the middle position of the top end of the mounting plate 1, the top end of the support shaft 2 is fixedly connected with the middle position of the bottom end of the support frame 4, and the outside of the support shaft 2 is fixedly connected to the position near the bottom end with a toothed plate 14, and a stepping motor 8 It is fixedly installed on one side of the top end of the mounting plate 1, the output end of the stepping motor 8 is fixedly connected with a gear 15, the support shaft 2 and the gear 15 are perpendicular to each other, and the support shaft 2 and the gear 15 are meshed and connected to start the stepping The motor 8 and the stepping motor 8 drive the gear 15 to rotate, the gear 15 will drive the support shaft 2 to rotate on the mounting plate 1 through the toothed disc 14, and the support shaft 2 will drive the support frame 4 to rotate, so that the clamped and positioned The workpiece is rotated to facilitate multi-angle processing of the workpiece. The inside of the support frame 4 is provided with a quick-drive clamping mechanism. The quick-drive clamping mechanism includes a hydraulic cylinder 3, a sliding rod 5, a connecting rod 16, a connecting rod 17 and a sliding sleeve 18. , the hydraulic cylinder 3 is fixedly installed at the middle position of the inner bottom end of the support frame 4, the top end inside the support frame 4 is fixedly connected with the sliding rod 5, and two sets of sliding sleeves 18 are symmetrically arranged on both sides outside the sliding rod 5. The bottom end is articulated with a connecting rod 16, the other end of the connecting rod 16 is articulated with the output end of the hydraulic cylinder 3, the top end of the sliding sleeve 18 is fixedly connected with a connecting rod 17, and the top end of the connecting rod 17 penetrates the interior of the slot 9 and extends To the inside of the placement slot 6, the top end of the connecting rod 17 is fixedly connected with the bottom end of the positioning plate 7, the workpiece to be processed is placed inside the placement slot 6, and then the hydraulic cylinder 3 is activated. The connecting rod 16 simultaneously pulls the sliding sleeves 18 on both sides of the sliding rod 5 to the middle, and the sliding sleeve 18 drives the positioning plates 7 on both sides of the inner side of the placing groove 6 to approach each other through the connecting rod 17, so that the workpiece clamp can be moved closer to each other. Tight positioning, the workpiece positioning device not only has a simple structure, but also moves quickly and is very convenient to use.

Working principle: When the utility model is in use, first, the workpiece to be processed is placed inside the placement groove 6, and then the hydraulic cylinder 3 is activated, and the hydraulic cylinder 3 will simultaneously pull the outside of the sliding rod 5 through the connecting rod 16 during the shrinkage process. The sliding sleeves 18 on both sides move toward the middle, and the sliding sleeves 18 will drive the positioning plates 7 on both sides of the placement slot 6 to approach each other through the connecting rod 17. At this time, the protective plate 10 on one side of the positioning plate 7 will first contact the workpiece, and then The positioning plate 7 continues to move, and the spring 13 is gradually compressed at this time, and the clamping force of the protective plate 10 to the workpiece is also continuously increased until the workpiece is clamped and positioned, which can not only prevent the workpiece from being damaged due to excessive instantaneous pressure on the workpiece, but also utilize The reset elastic force of the spring 13 can prevent the workpiece from loosening. The workpiece positioning device is not only simple in structure, but also fast in action. Finally, the stepper motor 8 is activated, and the stepper motor 8 drives the gear 15 to rotate, and the gear 15 is driven and supported by the toothed plate 14. The shaft 2 rotates on the mounting plate 1, and the support shaft 2 drives the support frame 4 to rotate, so that the clamped and positioned workpiece can be rotated automatically, thereby facilitating multi-angle machining of the workpiece.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (6)

1. A workpiece positioning device for CNC machine tools, comprising a mounting plate (1) and a support frame (4), characterized in that: the support frame (4) is arranged on the top of the mounting plate (1), and the support frame ( 4) A placement slot (6) is fixedly connected to the top of the placement slot (6), two sets of positioning plates (7) are symmetrically arranged inside the placement slot (6), and a buffer protection structure is arranged on the positioning plate (7), and the buffer The protective structure includes a protective plate (10), a telescopic hole (11), a telescopic rod (12) and a spring (13). ) and the bottom end of the support frame (4) is provided with an angle adjustment mechanism, the angle adjustment mechanism includes a support shaft (2), a stepping motor (8), a toothed plate (14) and a gear (15), The inside of the support frame (4) is provided with a quick-drive clamping mechanism, and the quick-drive clamping mechanism includes a hydraulic cylinder (3), a sliding rod (5), a connecting rod (16), a connecting rod (17) and a sliding rod (17). Sets (18). 2. A workpiece positioning device for CNC machine tools according to claim 1, characterized in that: the hydraulic cylinder (3) is fixedly installed at the middle position of the inner bottom end of the support frame (4), and the support frame (4) ) inside the top end is fixedly connected with a sliding rod (5), two sets of sliding sleeves (18) are symmetrically arranged on both sides of the outside of the sliding rod (5), and the bottom end of the sliding sleeve (18) is hinged with a connecting rod (16), the other end of the connecting rod (16) is articulated with the output end of the hydraulic cylinder (3), and the top end of the sliding sleeve (18) is fixedly connected with a connecting rod (17). 3. The workpiece positioning device for a CNC machine tool according to claim 1, wherein the top end of the connecting rod (17) penetrates the interior of the slot (9) and extends to the interior of the placement slot (6), The top end of the connecting rod (17) is fixedly connected with the bottom end of the positioning plate (7). 4. A workpiece positioning device for a CNC machine tool according to claim 1, wherein the top and bottom ends of the positioning plate (7) are respectively provided with two sets of telescopic holes (11). A telescopic rod (12) runs through the interior of the telescopic rod (11), one side of the telescopic rod (12) is fixedly connected with a protective plate (10), and the outside of the telescopic rod (12) is close to one side of the protective plate (10). A spring (13) is attached. 5. A workpiece positioning device for CNC machine tools according to claim 1, characterized in that: the support shaft (2) is movably connected at the middle position of the top end of the mounting plate (1), and the support shaft (2) The top end is fixedly connected with the middle position of the bottom end of the support frame (4), the outside of the support shaft (2) is fixedly connected with a toothed plate (14) at the position close to the bottom end, and the stepper motor (8) is fixedly installed on the installation On one side of the top end of the board (1), the output end of the stepping motor (8) is fixedly connected with a gear (15). 6. The workpiece positioning device for a CNC machine tool according to claim 1, wherein the support shaft (2) and the gear (15) are perpendicular to each other, and the support shaft (2) and the gear (15) are perpendicular to each other. meshing connection between.

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