CN219188760U

CN219188760U - Automatic hexagonal milling machine

Info

Publication number: CN219188760U
Application number: CN202320293507.5U
Authority: CN
Inventors: 陈传银; 崇晓燕; 陆有建
Original assignee: Anhui Sifan Automation Technology Co ltd
Current assignee: Anhui Sifan Automation Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-16
Anticipated expiration: 2033-02-23

Abstract

The utility model relates to the technical field of machining equipment, and discloses an automatic hexagonal milling machine, which comprises: the installation cylinder is internally provided with a penetrating air passage, and a first part on the air passage is communicated with a connecting port at one end of the installation cylinder; the sealing clamping piece is positioned at the second part of the air passage, the opening of the second part is positioned at the other end of the mounting cylinder, the sealing clamping piece is movably connected with the second part, and when moving to the position where the first part is, the sealing clamping piece tightly holds the workpiece and is in sealing fit with the second part and the workpiece. The negative pressure pump keeps the negative pressure in the air passage, namely, the connection port is closed by stopping the machine, so that the constant negative pressure in the air passage can be realized. After the processing of the workpiece is finished, the connecting port is opened to blow out air, and the processed workpiece can be withdrawn.

Description

Automatic hexagonal milling machine

Technical Field

The utility model relates to the technical field of machining equipment, in particular to an automatic hexagonal milling machine.

Background

The milling hexagonal machine is used as processing equipment, is indispensable equipment in the production process of nuts and bolts, is mature, can basically realize the whole process automation operation of automatic feeding, processing and discharging, and is easy and efficient to use.

The machining mode of milling the hexagon generally uses a milling machine and an index plate to carry out index milling on the workpiece so as to obtain a finished product. The workpiece is automatically placed on the chuck and clamped by means of air negative pressure. Because of the gap between the aperture on the clamping head and the outer wall of the workpiece, when the clamping is performed by utilizing negative pressure, the negative pressure is difficult to maintain, and the negative pressure pump must continuously work until the processing is completed. And the existing gap also causes that the central position of the workpiece after being fixed cannot be ensured to be consistent, and the machining precision is not high.

Based on this, it is necessary to design an automatic hexagonal milling machine.

Disclosure of Invention

In order to overcome the technical problems, the utility model provides an automatic hexagonal milling machine so as to achieve the purposes of high-efficiency and stable self-centering clamping and reduced working load of a negative pressure pump.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an automatic hexagonal milling machine comprising:

the installation cylinder is internally provided with a penetrating air passage, and a first part on the air passage is communicated with a connecting port at one end of the installation cylinder;

the sealing clamping piece is positioned at the second part of the air passage, the opening of the second part is positioned at the other end of the mounting cylinder, the sealing clamping piece is movably connected with the second part, and when moving to the position where the first part is, the sealing clamping piece tightly holds the workpiece and is in sealing fit with the second part and the workpiece.

Preferably, the first portion and the second portion form a reducing structure, and a transition surface between the second portion and the first portion is a first conical surface.

Preferably, the second portion comprises a front portion and a rear portion, the front portion transitions to the first portion through the first taper and the front portion transitions to the rear portion through the second taper.

Preferably, the sealing clip comprises at least:

the clamping pieces are annularly distributed in the second part, adjacent clamping pieces are in clearance fit, and the cross section of each clamping piece is in a fan shape;

the reset spring is positioned in a placing groove arranged on the inner wall of the rear part, and one end of the reset spring is matched with the thrust plate on the circular arc outer wall of the clamping piece;

the clamping piece is provided with a first inclined plane and a second inclined plane, the first inclined plane is in sliding fit with the first conical surface, and the second inclined plane is in sliding fit with the second conical surface.

Preferably, the circular arc inner wall side of the clamping piece is provided with a step surface for limiting, and the step surface is provided with a first rubber layer.

Preferably, a second rubber layer is attached to one side surface of the clamping piece.

Preferably, the first conical surface and the second conical surface are embedded with sealing gaskets.

Preferably, the clamping pieces are provided with barrier removing cavity passages, the barrier removing cavity passages are used for communicating the inner sides and the outer sides of the clamping pieces, and rubber plugs are embedded in the barrier removing cavity passages.

Compared with the prior art, the utility model has the beneficial effects that:

in the utility model, one end of the workpiece is placed into the sealing clamping piece during operation, and at the moment, the workpiece is in clearance fit with the sealing clamping piece. And then the negative pressure pump is started, at the moment, gas in the air passage is rapidly pumped out from the connecting port by the negative pressure pump, and the negative pressure forces the workpiece and the sealing clamping piece to move to the position where the first part is located, so that the workpiece is held tightly, and the workpiece is in sealing fit with the second part and the workpiece, so that sealing is realized without air leakage. Under the condition, the negative pressure pump can keep the negative pressure in the air passage, namely, the connection port can be closed by stopping the machine, so that the constant negative pressure in the air passage can be realized. After the processing of the workpiece is finished, the connecting port is opened to blow out air, and the processed workpiece can be withdrawn.

Compared with the prior negative pressure pump, the negative pressure pump can ensure that the negative pressure in the air passage is stable after continuous working, and the technical scheme provided by the application has the advantages that the working time of the negative pressure pump is greatly reduced under the condition of being capable of greatly achieving the same effect, and the energy-saving effect is achieved.

Drawings

FIG. 1 is an end view of an automatic milling machine according to one embodiment of the present utility model;

FIG. 2 is a side view of an automatic hexagonal milling machine according to one embodiment of the present utility model;

FIG. 3 is a cross-sectional view at A-A in FIG. 2;

fig. 4 is a perspective view of an automatic hexagonal milling machine according to an embodiment of the present utility model.

In the figure: 1. a mounting cylinder; 2. an airway; 21. a first portion; 22. a second portion; 221. a front part; 222. a rear portion; 223. a second conical surface; 23. a first conical surface; 3. a connection port; 4. a sealing clamp; 41. a clamping piece; 42. a return spring; 43. a placement groove; 44. a thrust plate; 45. a first inclined surface; 46. a second inclined surface; 47. a step surface; 48. a first rubber layer; 49. a second rubber layer; 50. barrier removal cavity; 51. a rubber stopper; 5. and a sealing gasket.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and examples.

In combination with the accompanying drawings, an automatic hexagonal milling machine comprising: a mounting cylinder 1, an air channel 2, a connection port 3 and a sealing clamp 4. Wherein, the inside air flue 2 that runs through that is equipped with of installation section of thick bamboo 1, the first part 21 on the air flue 2 communicates with the connection port 3 of installation section of thick bamboo 1 one end, and the sealing clamping piece 4 is located the second part 22 on the air flue 2, and the opening of second part 22 is located the other end of installation section of thick bamboo 1, sealing clamping piece 4 and second part 22 swing joint, and when moving to the position of first part 21 place, sealing clamping piece 4 holds tightly the work piece to with second part 22 and work piece sealing fit.

Specifically, in operation, one end of the workpiece is placed into the sealing jaw 4, at which time the workpiece is in clearance fit with the sealing jaw 4. Then the negative pressure pump is started, at the moment, the gas in the air passage 2 is rapidly pumped out from the connecting port 3 by the negative pressure pump, and the negative pressure forces the workpiece and the sealing clamping piece 4 to move to the position of the first part 21, so that the workpiece is tightly held, and the workpiece is in sealing fit with the second part 22 and the workpiece, so that sealing and air tightness are realized. In this case, the negative pressure pump only needs to keep the negative pressure in the air passage 2, that is, the connection port 3 is closed by stopping the machine, so that the constant negative pressure in the air passage 2 can be realized. After the processing of the workpiece is completed, the connecting port 3 is opened to blow out air, and the processed workpiece can be withdrawn.

Compared with the prior art that the negative pressure pump needs to continuously work to ensure that the negative pressure in the air passage 2 is stable, the technical scheme provided by the application greatly reduces the working time of the negative pressure pump under the condition of greatly same effect, and plays an energy-saving effect.

In the present embodiment, the first portion 21 and the second portion 22 form a variable diameter structure, and a transition surface between the second portion 22 and the first portion 21 is a first tapered surface 23. The first portion 21, because only venting or venting is required, has a suitably reduced inside diameter and the first tapered surface 23 transitions so that the sealing clamp 4 can progressively hug the workpiece as it moves toward the first portion 21.

In addition, the second portion 22 includes a front portion 221 and a rear portion 222, the front portion 221 transitions to the first portion 21 through the first taper 23, and the front portion 221 transitions to the rear portion 222 through the second taper 223. In order to make the force with which the sealing jaw 4 grips the workpiece uniform, a conical transition is also provided on the second portion 22, preferably the first conical surface 23 and the second conical surface 223 have the same conicity.

To facilitate the understanding of the sealing jaw 4, a preferred embodiment is given.

The sealing clip 4 comprises: the clamping pieces 41, the clamping pieces 41 are annularly distributed in the second part 22, adjacent clamping pieces 41 are in clearance fit, and the cross section of each clamping piece 41 is in a fan shape; a return spring 42, wherein the return spring 42 is positioned in a placing groove 43 arranged on the inner wall of the rear part 222, and one end of the return spring is matched with a thrust plate 44 on the circular arc outer wall of the clamping piece 41; the clamping piece 41 is provided with a first inclined surface 45 and a second inclined surface 46, the first inclined surface 45 is in sliding fit with the first conical surface 23, and the second inclined surface 46 is in sliding fit with the second conical surface 223.

Specifically, three clamping pieces 41 are provided, the central angle corresponding to each clamping piece 41 is smaller than 120 degrees, preferably 110 degrees, in a normal state, the reset spring 42 pushes the thrust plate 44, one end of the clamping piece 41 is flush with the end of the mounting cylinder 1, in a clamping state, the reset spring 42 is compressed, the first inclined surface 45 is in sliding fit with the first conical surface 23, and the second inclined surface 46 is in sliding fit with the second conical surface 223, so that the clamping pieces can slide synchronously.

The circular arc inner wall side of the holding piece 41 is provided with a step surface 47 for limiting, and the step surface 47 is provided with a first rubber layer 48. The step surface 47 is provided on the one hand to limit the workpiece and on the other hand to shorten the clamping process. When the material is put in, the end part pushes against the step surface 47, so that the clamping pieces 41 shrink towards the center, the gap between the clamping pieces 41 is reduced, and at the moment, the negative pressure generated during the working of the negative pressure pump is very easy to quickly squeeze the clamping pieces 41 together to quickly clamp a workpiece. And the workpiece synchronously acts, so that the self-centering of the workpiece can be realized.

To further improve the sealability, a second rubber layer 49 is attached to one side of the grip piece 41. When the clamping pieces 41 are closed, the intermediate second rubber layer 49 can fill the gap between adjacent clamping pieces 41, thereby avoiding air leakage.

Further, the first tapered surface 23 and the second tapered surface 223 are each fitted with a sealing gasket 5. So that the clamping piece 41 can also play a sealing role after being matched with the corresponding conical surface.

Further, the clamping piece 41 is provided with a barrier removing cavity 50, the barrier removing cavity 50 communicates the inner side and the outer side of the clamping piece 41, and the barrier removing cavity 50 is embedded with a rubber plug 51. The barrier removal cavity 50 is provided to avoid unexpected situations, and when the clamping piece 41 is blocked and the workpiece cannot be removed, the rubber plug 51 is removed first, so that barrier removal operation can be performed through the barrier removal cavity 50.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. Within the scope of the technical idea of the utility model, a number of simple variants of the technical solution of the utility model are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims

1. An automatic hexagonal machine for milling, comprising:

the device comprises an installation cylinder (1), wherein a penetrating air passage (2) is formed in the installation cylinder (1), and a first part (21) on the air passage (2) is communicated with a connecting port (3) at one end of the installation cylinder (1);

the sealing clamping piece (4), sealing clamping piece (4) are located second part (22) on air flue (2), and the opening of second part (22) is located the other end of installation section of thick bamboo (1), sealing clamping piece (4) and second part (22) swing joint, and when moving to first part (21) place, sealing clamping piece (4) hugs tightly the work piece to with second part (22) and work piece sealing fit.

2. An automatic hexagonal milling machine according to claim 1, wherein:

the first part (21) and the second part (22) form a reducing structure, and a transition surface between the second part (22) and the first part (21) is a first conical surface (23).

3. An automatic hexagonal milling machine according to claim 2, characterized in that:

the second portion (22) comprises a front portion (221) and a rear portion (222), the front portion (221) being transited to the first portion (21) by a first conical surface (23), the front portion (221) being transited to the rear portion (222) by a second conical surface (223).

4. An automatic hexagonal milling machine according to claim 3, characterized in that:

the sealing clamp (4) comprises at least:

the clamping pieces (41) are annularly distributed in the second part (22), adjacent clamping pieces (41) are in clearance fit, and the cross section of each clamping piece (41) is in a fan shape;

the reset spring (42) is positioned in a placing groove (43) arranged on the inner wall of the rear part (222), and one end of the reset spring is matched with a thrust plate (44) on the arc outer wall of the clamping piece (41);

the clamping piece (41) is provided with a first inclined surface (45) and a second inclined surface (46), the first inclined surface (45) is in sliding fit with the first conical surface (23), and the second inclined surface (46) is in sliding fit with the second conical surface (223).

5. An automatic hexagonal milling machine according to claim 4, wherein:

the clamping piece (41) is provided with a step surface (47) for limiting on the side of the circular arc inner wall, and a first rubber layer (48) is arranged on the step surface (47).

6. An automatic hexagonal milling machine according to claim 4, wherein:

a second rubber layer (49) is attached to one side surface of the clamping piece (41).

7. An automatic hexagonal milling machine according to claim 3, characterized in that:

and sealing gaskets (5) are embedded on the first conical surface (23) and the second conical surface (223).

8. An automatic hexagonal milling machine according to claim 4, wherein:

the clamping pieces (41) are provided with barrier removing cavity channels (50), the barrier removing cavity channels (50) are used for communicating the inner sides and the outer sides of the clamping pieces (41), and rubber plugs (51) are embedded in the barrier removing cavity channels (50).