CN216990904U

CN216990904U - A accurate positioning CNC anchor clamps for precision finishing

Info

Publication number: CN216990904U
Application number: CN202123434610.7U
Authority: CN
Inventors: 韦雪琼
Original assignee: Shenzhen Dongxiao Hardware Products Co ltd
Current assignee: Shenzhen Dongxiao Hardware Products Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-19
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an accurate positioning CNC clamp for precise machining, and relates to the technical field of CNC clamp improvement. According to the utility model, the floating clamping mechanism is arranged at the bottom of the rotating rod, the floating clamping mechanism is matched with the multiple groups of inverted trapezoidal grooves arranged on the lower supporting plate, a plurality of workpieces can be clamped at one time, and compared with the mode of clamping a plurality of workpieces independently, the clamping time of the workpieces is greatly reduced, and on the other hand, the wedge piece which bears the clamping function in the floating clamping mechanism is rotatably connected with the triangular plate, so that a plurality of workpieces with different outer circle diameters and smaller differences can be clamped.

Description

A accurate positioning CNC anchor clamps for precision finishing

Technical Field

The utility model relates to the technical field of CNC (computerized numerical control) clamp improvement, in particular to a precise positioning CNC clamp for precise machining.

Background

The CNC is also called as a numerically controlled milling machine, and English means a milling machine controlled by an electronic counter digitalized signal, which is an automatic processing device developed on the basis of a common milling machine, the processing technologies of the two are basically the same, and a CNC fixture is a very important and common part for assisting workpiece processing on the CNC, and mainly functions to fix a workpiece to be processed so that the CNC can process the workpiece.

CNC anchor clamps to round axle work piece among the prior art generally can only process single round axle, adds man-hour when needs to a plurality of work pieces, just need use a plurality of anchor clamps to carry out the clamping alone, and is troublesome, the inefficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, a CNC clamp for a circular shaft workpiece can only process a single circular shaft generally, and when a plurality of workpieces need to be processed, a plurality of clamps need to be used for independently clamping, so that the problems of labor and time waste and low efficiency are solved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an accurate positioning CNC anchor clamps for precision finishing, includes the guide rail, the guide rail is provided with two sets ofly altogether, the guide rail slides along the horizontal direction and is provided with the backup pad, backup pad upper surface screw in has set screw, the set screw bottom extends to the guide rail upper surface, backup pad upper surface one side is perpendicularly welded and is connected with first stand, first stand top one side is rotated and is connected with the dwang, dwang side central point puts and has seted up the arc circular slot, it can be with the multiunit is cylindrical to treat the machined part and carry out the unsteady clamping mechanism that presss from both sides tightly to be provided with in the arc circular slot, the backup pad has the second stand by the perpendicular welding of first stand offside, second stand top is rotated and is connected with the compression leg, the fixed welding of compression leg one end has the auxiliary rod.

Optionally, the floating clamping mechanism comprises a triangular plate, a triangular groove and a wedge, and the central line position of the top of the side surface of the triangular plate is rotatably connected to the arc circular groove by a rotating pin.

Optionally, the set square has seted up the triangular groove along vertical central line symmetry, the triangular groove internal rotation is connected with the wedge, the arc wall has been seted up to the wedge bottom, wedge side cross section projection size is four fifths of triangular groove cross section projection size.

Optionally, the backup pad has lower backup pad by the fixed welding in set square below, the inverted trapezoid groove has been seted up to lower backup pad upper surface, the inverted trapezoid groove is provided with four groups altogether.

Optionally, a limiting ratchet wheel is welded at the rotating shaft of the pressing rod, and a limiting clamping rod is rotatably connected to the second upright column above the limiting ratchet wheel.

Optionally, the bottom end of the limiting clamping rod is arranged to be a tip end, the bottom end of the limiting clamping rod is inserted into a gear tooth groove of the limiting ratchet wheel, and a balancing weight is fixedly welded on the side face of the limiting clamping rod.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the floating clamping mechanism is arranged at the bottom of the rotating rod, the floating clamping mechanism is matched with the multiple groups of inverted trapezoidal grooves arranged on the lower supporting plate, a plurality of workpieces can be clamped at one time, and compared with the mode of clamping a plurality of workpieces independently, the clamping time of the workpieces is greatly reduced, and on the other hand, the wedge piece which bears the clamping function in the floating clamping mechanism is rotatably connected with the triangular plate, so that a plurality of workpieces with different outer circle diameters and smaller differences can be clamped.

2. The floating clamping mechanism on the rotating rod is pressed to the lower supporting plate by the pressing rod, the rotation limit of the pressing rod is limited by the limiting ratchet wheel and the limiting clamping rod, and the floating clamping mechanism is greatly convenient to clamp a workpiece.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a three-dimensional structure of FIG. 1 from another perspective;

FIG. 3 is an enlarged view of a portion of the structure at A in FIG. 2;

fig. 4 is a schematic diagram of a three-dimensional connection structure of the floating clamping mechanism and the rotating rod.

In the figure: 1. a first upright post; 2. a set screw; 3. rotating the rod; 31. an arc-shaped circular groove; 4. a lower supporting plate; 41. a reversed trapezoidal groove; 5. a floating clamping mechanism; 51. a set square; 52. a triangular groove; 53. a wedge; 530. an arc-shaped slot; 6. an auxiliary lever; 7. a guide rail; 8. a support plate; 9. a balancing weight; 10. a limiting clamping rod; 11. a limiting ratchet wheel; 12. a hold down bar; 13. and a second upright.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a precision positioning CNC anchor clamps for precision finishing, including guide rail 7, guide rail 7 is provided with two sets ofly altogether, guide rail 7 slides along the horizontal direction and is provided with backup pad 8, backup pad 8 upper surface screw in has set screw 2, set screw 2 bottom extends to guide rail 7 upper surface, backup pad 8 is provided with two sets ofly altogether, fix backup pad 8 on guide rail 7 through using set screw 2, thereby adjust the relative distance between two sets of backup pads 8, and then make this anchor clamps can carry out the centre gripping to the circle axle type work piece of different length.

The vertical welding has first stand 1 in backup pad 8 upper surface one side, and 1 top one side of first stand is rotated and is connected with dwang 3, and 1 top of first stand is close to dwang 3 position department and has seted up the groove of stepping down, does not influence the rotation of dwang 3 for first stand 1, and arc circular slot 31 has been seted up to dwang 3 side central point.

Be provided with in the arc circular slot 31 and treat the machined part with the multiunit is tight clamping mechanism 5 that floats, floating clamping mechanism 5 includes set-square 51, triangular groove 52, wedge 53, and set-square 51 side top central line position adopts the commentaries on classics round pin to rotate to be connected in arc circular slot 31 department, and the setting of arc circular slot 31 is convenient for set-square 51 and can takes place small the rotation to can make set-square 51 press from both sides tightly simultaneously to the little work piece of diameter difference of same batch.

Triangular groove 52 has been seted up along vertical central line symmetry to set-square 51, and triangular groove 52 internal rotation is connected with wedge 53, and arc groove 530 has been seted up to wedge 53 bottom, and wedge 53 side cross-section projection size is four fifths of triangular groove 52 cross-section projection size, and arc groove 530 is in order to adapt to the outer wall of circle axle class part.

Backup pad 8 leans on the fixed welding in set square 51 below to have down backup pad 4, and the inverted trapezoidal groove 41 has been seted up to lower backup pad 4 upper surface, and inverted trapezoidal groove 41 is provided with four groups altogether, and wedge piece 53 can carry out the centre gripping to the circular shaft type part with the mutual cooperation of inverted trapezoidal groove 41.

Backup pad 8 has second stand 13 by 1 offside vertical welding of first stand, second stand 13 top is rotated and is connected with compressing tightly pole 12, the fixed welding of 12 one ends of compressing tightly pole has auxiliary rod 6, compressing tightly 12 pivot department welding has spacing ratchet 11, second stand 13 leans on spacing ratchet 11 top to rotate and is connected with spacing kelly 10, spacing kelly 10 card is gone into in 11 wheel tooth's grooves of spacing ratchet, thereby make compressing tightly pole 12 can only follow anticlockwise rotation as shown in fig. 3, compressing tightly pole 12 can drive dwang 3 constantly to push down fagging 4.

The bottom end of the limiting clamping rod 10 is arranged to be pointed, the bottom end of the limiting clamping rod 10 is inserted into a gear tooth groove of the limiting ratchet wheel 11, the side face of the limiting clamping rod 10 is fixedly welded with a balancing weight 9, the balancing weight 9 is made of a metal with high material selection density, and the balancing weight 9 enables the pointed end of the limiting clamping rod 10 to be pulled out of the limiting ratchet wheel 11 under the condition that the limiting clamping rod is not stirred by external force.

Specifically, the utility model can clamp the workpieces of the same batch, which have different diameters of the outer circle but smaller differences.

The specific implementation steps and principle of the utility model are as follows:

when the utility model is used, the balancing weight 9 is manually lifted, at the moment, the limiting clamping rod 10 is separated from the gear tooth groove of the limiting ratchet wheel 11, the balancing weight 9 is loosened after the pressing rod 12 rotates clockwise to the position where the lifting of the rotating rod 3 is not blocked as shown in figure 1, a plurality of workpieces in the same batch are placed in the inverted trapezoidal groove 41 formed above the lower supporting plate 4, then the pressing rod 12 rotates anticlockwise as shown in figure 1, the pressing rod 12 continuously presses one end of the rotating rod 3, so that the floating clamping mechanism 5 at the bottom of the rotating rod 3 is close to the inverted trapezoidal groove 41 of the lower supporting plate 4, and the arc-shaped groove 530 arranged below the wedge piece 53 is matched with the inverted trapezoidal groove 41 to clamp the plurality of workpieces.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a pinpoint CNC anchor clamps for precision finishing, includes guide rail (7), its characterized in that, guide rail (7) are provided with two sets ofly altogether, guide rail (7) slide along the horizontal direction and are provided with backup pad (8), backup pad (8) upper surface screw thread screw in has set screw (2), set screw (2) bottom extends to guide rail (7) upper surface, the perpendicular welding of backup pad (8) upper surface one side has first stand (1), first stand (1) top one side rotates and is connected with dwang (3), dwang (3) side central point puts and has seted up arc circular slot (31), be provided with in the arc circular slot 31 and treat the clamping mechanism (5) that the machined part was pressed from both sides tightly to the multiunit is cylindrical, backup pad (8) have second stand (13) by first stand (1) offside perpendicular welding, the top of the second upright post (13) is rotatably connected with a pressing rod (12), and one end of the pressing rod (12) is fixedly welded with an auxiliary rod (6).

2. The CNC fixture for precise positioning for machining according to the claim 1, characterized in that the floating clamping mechanism (5) includes a triangle board (51), a triangle groove (52), a wedge piece (53), the triangle board (51) is connected with the arc circular groove (31) at the top center position of the side surface by rotating pin.

3. The CNC clamp for precise positioning for precision machining is characterized in that the triangular plate (51) is symmetrically provided with triangular grooves (52) along a vertical center line, the triangular grooves (52) are rotatably connected with wedge pieces (53), the bottoms of the wedge pieces (53) are provided with arc-shaped grooves (530), and the projection dimension of the side surfaces of the wedge pieces (53) is four fifths of the projection dimension of the sections of the triangular grooves (52).

4. The CNC clamp for precisely positioning used for precision machining is characterized in that the support plate (8) is fixedly welded with a lower support plate (4) below a triangular plate (51), the upper surface of the lower support plate (4) is provided with four groups of inverted trapezoidal grooves (41), and the four groups of inverted trapezoidal grooves (41) are arranged on the upper surface of the lower support plate.

5. The CNC clamp for precisely positioning used for precision machining is characterized in that a limiting ratchet wheel (11) is welded at the rotating shaft of the pressing rod (12), and a limiting clamping rod (10) is rotatably connected to the second upright post (13) above the limiting ratchet wheel (11).

6. The CNC clamp for precisely positioning used for precision machining is characterized in that the bottom end of the limiting clamping rod (10) is arranged to be a tip end, the bottom end of the limiting clamping rod (10) is inserted into a gear tooth groove of the limiting ratchet wheel (11), and a balancing weight (9) is fixedly welded on the side surface of the limiting clamping rod (10).