CN216802645U - CNC anchor clamps part center positioning device - Google Patents

Abstract

The utility model discloses a CNC (computer numerical control) clamp part center positioning device which comprises a bearing bottom plate, a push-out reset oil cylinder, a displacement rod, a positioning pin seat and a positioning pin, wherein the push-out reset oil cylinder is arranged on the bearing bottom plate; the push-out reset oil cylinder is fixed on the bearing bottom plate, a piston rod of the push-out reset oil cylinder is respectively connected with the displacement rods arranged on two sides of the push-out reset oil cylinder, the displacement rods are far away from the ends, fixed with positioning pin seats, of the push-out reset oil cylinder, the positioning pin seats are provided with positioning pins used for positioning the positioning holes, and the displacement rods are sleeved with center clamping pieces and the distance between the center clamping pieces and the two positioning pins is equal. The part center positioning device of the CNC clamp is reasonable in structural design, the center clamping piece is arranged between the two positioning pins, and the deviation of the blank parts is evenly distributed on two sides of the parts, so that holes and blank bosses are evenly machined after machining, the concentricity requirement is met, the product quality is guaranteed, the scrappage is reduced, the production efficiency is improved, the production cost is reduced, and the part center positioning device has a wide application prospect.

Description

CNC anchor clamps part center positioning device

Technical Field

The utility model relates to the technical field of part precision control, in particular to a part center positioning device of a CNC (computer numerical control) clamp.

Background

When a part is machined by CNC, the part is often required to be positioned so as to ensure that the precision of the part can meet the requirement during machining. The part is made in current processing generally adopts two round pin one side or 6 fixed stay points locate mode, and two spring pins and 3 fixed stay points or 6 fixed stay points come fixed part on the coplanar promptly, when meetting after-machining hole and blank boss have the concentricity requirement, above locate mode can not satisfy the processing demand, can lead to processing to scrap greatly increased and can improve the blank and make the degree of difficulty, and the process is difficult to control.

Therefore, the part positioning device for uniformly machining the hole and the blank boss to meet the concentricity requirement is very significant.

SUMMERY OF THE UTILITY MODEL

Due to the defects in the prior art, the utility model provides the part positioning device for uniformly machining the hole and the blank boss to meet the concentricity requirement, and the problem that the concentricity requirement of the part machining hole and the blank boss cannot be met by the conventional positioning mode is solved.

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

a CNC fixture part center positioning device comprises a bearing bottom plate, a push-out reset oil cylinder, a displacement rod, a positioning pin seat and a positioning pin;

the push-out reset oil cylinder is fixed on the bearing bottom plate, a piston rod of the push-out reset oil cylinder is respectively connected with displacement rods arranged on two sides of the push-out reset oil cylinder, a positioning pin seat is fixed at the end, far away from the push-out reset oil cylinder, of each displacement rod, positioning pins used for positioning with the positioning holes are arranged on the positioning pin seats, and a center clamping piece is sleeved on each displacement rod, and the distance between the center clamping piece and the two positioning pins is the same. The utility model has better applicability, and can realize the positioning of products of the same type by replacing different displacement rod lengths and positioning pin sizes.

The part center positioning device of the CNC clamp is reasonable in structural design, the center clamping piece is arranged between the two positioning pins, namely the center positioning device divides the center line of the part to be positioned, the deviation of the blank part is evenly distributed on two sides of the part, so that the purpose of evenly machining the hole and the blank boss after machining is achieved, the concentricity requirement is met (the problem that the eccentricity of the blank and the machined hole is large can be solved by the part), the manufacturing difficulty of the blank is reduced, the product percent of pass is improved, the product quality is better ensured, the scrappage is reduced, the production efficiency is improved, the production cost is reduced, and the part center positioning device has a great application prospect.

As a preferred technical scheme:

according to the CNC fixture part center positioning device, the piston rod and the displacement rod are parallel to the bearing bottom plate, and the piston rod is perpendicular to the displacement rod.

According to the CNC fixture part center positioning device, a through hole I is formed in the position, corresponding to the center clamping piece, of the bearing bottom plate.

According to the CNC clamp part center positioning device, the through hole I is located in the middle of the bearing bottom plate.

According to the CNC fixture part center positioning device, the push-out reset oil cylinder is fixed on one side of the bearing bottom plate, the first displacement rod and the second displacement rod are respectively arranged on two sides of the push-out reset oil cylinder, and the center clamping piece is sleeved on the first displacement rod.

According to the CNC fixture part center positioning device, the bearing bottom plate is fixed with the guide seat, the guide seat is provided with the through hole II, and the end, far away from the push-out reset cylinder, of the first displacement rod penetrates through the through hole II to be fixed with the positioning pin seat.

According to the CNC clamp part center positioning device, the piston rod and the connecting end of the displacement rod are integrally V-shaped, and the displacement rod is arranged on two sides of the V-shaped structure. The action of a single piston rod can be converted into a synchronous action of displacement rods arranged on both sides of the piston rod by means of a V-shaped structure. The head of the displacement rod (connected with the piston rod) is processed into a cone shape, and forms a taper zero clearance fit with the head of the piston rod (connected with the displacement rod), so that the verticality of the guide sleeve and the base is ensured.

A CNC anchor clamps part center locating device as above, piston rod and displacement rod link are equipped with the forked tail structure, displacement rod and piston rod link be equipped with the anti-forked tail structure that the forked tail structure matches. The piston rod and the displacement rod are clamped with each other through the dovetail structure and the reverse dovetail structure.

The above technical solutions are only one possible technical solution of the present invention, and the protection scope of the present invention is not limited thereto, and those skilled in the art can reasonably adjust the specific design according to the actual needs.

Compared with the prior art, the utility model has following advantage or beneficial effect:

the part center positioning device of the CNC clamp is reasonable in structural design, the center clamping piece is arranged between the two positioning pins, namely the center positioning device divides the center line of the part to be positioned, the deviation of the blank part is evenly distributed on two sides of the part, so that the machined holes and blank bosses are evenly machined, the concentricity requirement is met, the manufacturing difficulty of the blank is reduced, the product percent of pass is improved, the product quality is better guaranteed, the scrap is reduced, the production efficiency is improved, the production cost is reduced, and the part center positioning device has a great application prospect.

Drawings

The utility model and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is a schematic perspective view of a CNC fixture part center positioning apparatus of the present invention;

FIGS. 2, 3 and 4 are front, left and top views, respectively, of a CNC fixture part center locating apparatus of the present invention;

FIG. 5 is a cross-sectional view of FIGS. 4G-G;

fig. 6 and 7 are a front view and a perspective view, respectively, of the piston rod;

wherein, 1 is the load-bearing bottom plate, 2 is the locating pin seat, 3 is first displacement pole, 4 are the locating pin, 5 are for pushing out the hydro-cylinder that resets, 6 are the guide holder, 7 are central fastener, 8 are through-hole I, 9 are second displacement pole, 10 are the piston rod.

Detailed Description

The structure of the present invention will be further described with reference to the accompanying drawings and specific examples, but the present invention is not limited thereto.

Example 1

A CNC clamp part center positioning device is shown in figures 1-5 and comprises a bearing bottom plate 1, a push-out reset oil cylinder 5, displacement rods (a first displacement rod 3 and a second displacement rod 9), a positioning pin seat 2 and a positioning pin 4;

a push-out reset oil cylinder 5 is fixed on a bearing bottom plate 1, a piston rod 10 (as shown in figures 6-7, the connecting end of the piston rod and a displacement rod is integrally V-shaped, two displacement rods are arranged at two sides of the V-shaped structure and the connecting end of the piston rod and the two displacement rods is conical, the connecting end of the piston rod and the displacement rod is provided with a dovetail structure, the connecting end of the displacement rod and the piston rod is provided with an inverse dovetail structure matched with the dovetail structure) and is respectively connected with displacement rods (a first displacement rod 3 and a second displacement rod 9) arranged at two sides of the push-out reset oil cylinder 5, the piston rod 10 and the displacement rods (the first displacement rod 3 and the second displacement rod 9) are both parallel to the bearing bottom plate 1, the piston rod 10 is vertical to the displacement rods (the first displacement rod 3 and the second displacement rod 9), a positioning pin seat 2 is fixed at the far end of the displacement rod from the push-out reset oil cylinder, a positioning pin 4 for positioning with a positioning hole is arranged on the positioning pin seat 2, the push-out reset oil cylinder 5 is fixed on one side of the bearing bottom plate 1, the center clamping piece 7 is sleeved on the first displacement rod 3, the center clamping piece 7 is identical to the distance between the two positioning pins, a through hole I8 which is located in the middle of the bearing bottom plate 1 is formed in the position, corresponding to the center clamping piece 7, of the bearing bottom plate 1, a guide seat 6 is fixed on the bearing bottom plate 1, a through hole II is formed in the guide seat, and the end, far away from the push-out reset oil cylinder, of the first displacement rod penetrates through the through hole II to be fixed with the positioning pin seat 2.

The working steps of the device are as follows:

1. and placing the part positioning hole into a positioning pin corresponding to the part center positioning device of the CNC clamp, and flatly placing the part positioning hole.

2. The clamp button is actuated and the clamps are clamped in sequence.

3. The push-out reset oil cylinder is pushed out in the push-out direction to feed oil, and the piston rod is pushed forward.

4. The displacement rods at the two ends move towards the two sides in a balanced manner.

5. The positioning pin seat at the tail end of the displacement rod moves towards the two ends uniformly.

6. The positioning pin is close to the positioning hole wall, the posture of the part is corrected, and the part is positioned in a centering way.

7. When the piston rod is loosened, oil is reversely fed, the piston rod returns, and the displacement rod is pulled back.

According to the CNC fixture part center positioning device, the reset oil cylinder is pushed out, the vertical direction motion is converted into the horizontal direction in a T-shaped mode, the guide sleeve is used for guiding the horizontal direction to achieve linear motion of the displacement rod, the product positioning directions are determined to be consistent all the time through two points on the two positioning pins, the mechanism is guaranteed to meet the center-dividing positioning requirement, the part size tolerance is evenly distributed to two sides of a center-dividing line, and the balance of processed products is guaranteed. The mechanism can achieve a good effect on parts with high requirements on concentricity of a blank and a machining position. Of course, the device has certain limitation, and needs to be matched with a hydraulic system to play a clamping role. By changing the lengths of different displacement rods and the sizes of positioning pins, the positioning of products of the same type can be realized.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the utility model, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (8)

1. The utility model provides a CNC anchor clamps part center locating device which characterized in that: the device comprises a bearing bottom plate, a push-out reset oil cylinder, a displacement rod, a positioning pin seat and a positioning pin;

the push-out reset oil cylinder is fixed on the bearing bottom plate, a piston rod of the push-out reset oil cylinder is respectively connected with displacement rods arranged on two sides of the push-out reset oil cylinder, a positioning pin seat is fixed at the end, far away from the push-out reset oil cylinder, of each displacement rod, positioning pins used for positioning with the positioning holes are arranged on the positioning pin seats, and a center clamping piece is sleeved on each displacement rod, and the distance between the center clamping piece and the two positioning pins is the same.

2. The CNC jig part centering device of claim 1, wherein the piston rod and the displacement rod are parallel to the load floor and the piston rod is perpendicular to the displacement rod.

3. The CNC fixture part centering device of claim 1, wherein the bottom bearing plate has a through hole I corresponding to the center clip.

4. The CNC fixture part centering device of claim 3, wherein the through hole I is located in the middle of the load-bearing base plate.

5. The CNC fixture part center positioning device of claim 4, wherein the push-out reset cylinder is fixed on one side of the bearing bottom plate, the first displacement rod and the second displacement rod are respectively arranged on two sides of the push-out reset cylinder, and the center clamping piece is sleeved on the first displacement rod.

6. The CNC fixture part center positioning device of claim 5, wherein the bearing base plate is fixed with a guide seat, the guide seat is opened with a through hole II, and the end of the first displacement rod away from the push-out reset cylinder passes through the through hole II to be fixed with the positioning pin seat.

7. The CNC jig part centering device of claim 1, wherein the piston rod and the displacement rod connecting end are integrally V-shaped, and the displacement rod is disposed at both sides of the V-shaped structure.

8. The CNC fixture part centering device of claim 7, wherein the piston rod and displacement rod connection end is provided with a dovetail structure, and the displacement rod and piston rod connection end is provided with a reverse dovetail structure matching the dovetail structure.

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