CN219987328U - Milling fixing device - Google Patents

Abstract

The utility model discloses a milling fixing device which is used for fixing a workpiece, wherein the workpiece comprises a hollow cylinder and at least one protruding part arranged on the outer peripheral wall of the hollow cylinder, the hollow cylinder is provided with a first end part and a second end part which are oppositely arranged along the axial direction, the inner peripheral wall of the hollow cylinder is to be milled, the first end part of the hollow cylinder is open, and the milling fixing device comprises a processing base and a first fixing component. The first fixing component comprises a first placing seat, a plurality of first clamping components and a pressing component, wherein the first placing seat is arranged above the processing base and used for placing the second end and the protruding portion. The first clamping members are arranged on the processing base and form a first clamping space suitable for clamping the hollow cylinder. The pressing part is arranged on the processing base and is provided with at least one pressing piece, and the pressing piece is arranged above the first placing seat, is spaced from the first placing seat and is arranged opposite to the first placing seat so as to press the protruding part in a matched mode with the first placing seat. The utility model can limit the horizontal movement and the vertical movement of the workpiece, and is beneficial to improving the stability of the workpiece during milling.

Description

Milling fixing device

Technical Field

The utility model relates to the field of milling fixing equipment, in particular to a milling fixing device.

Background

Milling devices are devices that cut the surface of a workpiece by means of one or more rotating tools, thereby cutting off the excess allowance of the surface of the workpiece. The milling fixing device is used for fixing a processing object in the milling process so as to enable the processing object to occupy a correct position, so that a workpiece can be conveniently subjected to milling.

The milling fixture in the related art includes a placing seat for placing a workpiece and a clamping assembly disposed outside the placing seat, the clamping assembly being for providing a clamping force along a radial direction of the workpiece, thereby clamping the workpiece. However, in the process of rotationally inserting the milling cutter of the milling device into a vertically placed workpiece to remove the surplus allowance of the inner peripheral wall thereof, the workpiece is easy to move vertically along the workpiece, so that the milling process of the workpiece is easy to be affected, and the milling stability is poor.

Disclosure of Invention

One advantage of the present utility model is that the milling fixture is provided that limits horizontal and vertical movement of the workpiece, which is advantageous for improving the stability of the workpiece during milling.

Another advantage of the present utility model is to provide a milling fixture, in which a plurality of positioning posts cooperate with positioning holes on a plurality of protrusions of a workpiece to prevent the workpiece from rotating, which is beneficial to improving stability of the workpiece during milling.

To achieve at least one of the above advantages, the present utility model provides a milling fixture for fixing a workpiece including a hollow cylinder and at least one protruding portion provided at an outer peripheral wall of the hollow cylinder, the hollow cylinder having a first end portion and a second end portion disposed opposite to each other in an axial direction, an inner peripheral wall of the hollow cylinder to be milled and having a first end portion opened, the milling fixture comprising: a processing base; a first securing assembly, the first securing assembly comprising: the first placing seat is arranged above the processing base and is used for placing the second end part and the protruding part; the first clamping components are arranged on the processing base and are circumferentially arranged at intervals along the first placing seat to form a first clamping space suitable for clamping the hollow cylinder; and the pressing part is arranged on the processing base and is provided with at least one pressing piece, and the pressing piece is positioned above the first placing seat, is spaced from the first placing seat and is arranged opposite to the first placing seat, so as to be matched with the first placing seat to press the protruding part.

According to an embodiment of the present utility model, the plurality of protruding portions are arranged at intervals along the circumferential direction of the hollow cylinder, each protruding portion forms a positioning hole, a placement cavity for placing the hollow cylinder is formed in the first placement seat, and the first placement seat is provided with a plurality of positioning posts adapted to be correspondingly inserted into the plurality of positioning holes.

According to an embodiment of the present utility model, the plurality of protruding portions are arranged at intervals along the circumferential direction of the hollow cylinder, and the plurality of pressing members are arranged; the pressing component further comprises a first supporting seat, wherein the first supporting seat is arranged between the first placing seat and the processing base, a first channel extending vertically is formed in the first supporting seat, a plurality of first inclined channels which are communicated with the first channel and are circumferentially arranged around the first channel at intervals are formed in the first supporting seat, the first inclined channels extend obliquely, and the distances among the plurality of first inclined channels are gradually increased along the direction from bottom to top; the first connecting piece is arranged in the first channel in a vertically movable manner; the first connecting arms are circumferentially arranged at intervals around the first connecting piece, one end of each first connecting arm is connected with the first connecting piece, and the other end of each first connecting arm penetrates out of one first inclined channel and then is connected with one pressing piece; and the pressing driving piece is connected with the first connecting piece and is used for driving the first connecting piece to move vertically so as to drive a plurality of first connecting arms to move and stretch out or retract into a plurality of first inclined channels respectively, so as to drive a plurality of pressing pieces to gather together and approach to the first placing seat so as to press a plurality of protruding parts, or drive a plurality of pressing pieces to separate from each other and far away from the first placing seat so as to loosen a plurality of protruding parts.

According to an embodiment of the present utility model, the pressing component further includes a threaded member horizontally penetrating the first channel and abutting against the first connecting member, so as to press the first connecting member against the inner wall of the first supporting seat.

According to an embodiment of the present utility model, the pressing member further includes a pressing buffer member having elasticity and disposed on a lower surface of the pressing member, for contacting the protrusion when the pressing member presses the protrusion.

According to one embodiment of the utility model, the outer peripheral wall of the first connecting piece is provided with a plurality of connecting convex parts which are arranged at intervals along the circumferential direction of the first connecting piece, each first connecting arm forms a connecting groove, and the connecting convex parts are matched and arranged in the connecting grooves.

According to an embodiment of the present utility model, each of the first clamping members includes: the lower end of the support column is connected with the processing base; and one end of each of the first clamping pieces is arranged at the upper end of the supporting column, and the other end of each of the first clamping pieces is a free end and is positioned among the supporting columns so as to form a first clamping space between the free ends.

According to an embodiment of the present utility model, each of the first clamping members further includes: one end of the telescopic driving piece is connected with the upper end of the supporting column, and the other end of the telescopic driving piece is connected with the first clamping piece and used for driving the first clamping piece to move along the radial direction of the hollow cylinder; a position detecting element for detecting whether or not the free end of the first clamp member is moved to an abutment position capable of abutting against the outer peripheral wall of the hollow cylinder; and the controller is respectively connected with the position detection element and the telescopic driving piece and is used for controlling the telescopic driving piece to stop driving according to the movement of the free end to the abutting position.

According to an embodiment of the present utility model, the apparatus further comprises a second fixing member provided upstream of the first fixing member, the second fixing member comprising: the second placing seat is arranged above the processing base and is used for placing the first end part; the second clamping component is arranged on the processing base and is provided with a plurality of second clamping pieces, a second clamping space is formed by surrounding the second clamping pieces, the second clamping space is used for clamping the part, below the protruding part, of the hollow cylinder, and a milling gap suitable for milling is formed between the second clamping pieces and the protruding part.

According to an embodiment of the present utility model, the second clamping member further includes a second supporting seat, the second supporting seat is disposed between the second placing seat and the processing base, a second channel extending vertically is formed in the second supporting seat, a plurality of second inclined channels communicating with the second channel and circumferentially spaced around the second channel are formed in the second supporting seat, the second inclined channels extend obliquely, and distances between the plurality of second inclined channels gradually increase along a bottom-to-top direction; the second connecting piece is arranged in the second channel in a vertically movable manner; the second connecting arms are circumferentially arranged at intervals around the second connecting piece, one end of each second connecting arm is connected with the second connecting piece, and the other end of each second connecting arm penetrates out of one second inclined channel and then is connected with one second clamping piece; and the clamping driving piece is connected with the second connecting piece and is used for driving the second connecting piece to move vertically so as to drive a plurality of second connecting arms to respectively extend out or retract in a plurality of second inclined channels in a moving way, so as to drive a plurality of second clamping pieces to gather together to clamp the hollow cylinder or drive a plurality of second clamping pieces to separate from each other and simultaneously loosen the hollow cylinder.

Drawings

Fig. 1 shows a schematic structural view of a milling fixture according to an embodiment of the present utility model.

Fig. 2 shows a schematic structural view of a workpiece according to an embodiment of the present utility model.

Fig. 3 is a schematic view showing a structure in which a first fixing member according to an embodiment of the present utility model is mounted on a processing base.

Fig. 4 shows a schematic cross-sectional view of a first fixture assembly mounted on a processing base in accordance with an embodiment of the present utility model.

Fig. 5 is a schematic view showing a structure in which a second fixing member according to an embodiment of the present utility model is mounted on a processing base.

Fig. 6 shows a schematic cross-sectional view of a second fixture assembly of an embodiment of the present utility model mounted on a processing base.

Reference numerals

100. Milling a fixing device; 900. a workpiece; 91. a hollow cylinder; 911. a first end; 912. a second end; 92. a protruding portion; 9201. positioning holes;

10. processing a base;

20. a first fixing assembly; 21. a first placement base; 2101. a placement cavity; 211. positioning columns; 22. a first clamping member; 2201. a first clamping space; 221. a support column; 222. a first clamping member; 223. a telescopic driving member; 23. a pressing member; 231. a pressing member; 232. a first support base; 23201. a first channel; 23202. a first inclined channel; 233. a first connector; 2331. a connection bump; 234. a first connecting arm; 23401. a connection groove; 235. compressing the driving piece; 236. a screw; 237. compressing the buffer member;

30. a second fixing assembly; 31. a second placement seat; 32. a second clamping member; 321. a second clamping member; 3201. a second clamping space; 3202. milling the gap; 322. a second support base; 32201. a second channel; 32202. a second inclined channel; 323. a second connector; 324. a second connecting arm; 325. clamping the driving member.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 4, the milling fixture 100 of the present utility model is used for fixing a workpiece 900 before the workpiece 900 is processed, so as to facilitate the subsequent milling of the workpiece 900.

As shown in fig. 2, the workpiece 900 includes a hollow cylinder 91 and at least one protruding portion 92 provided on an outer peripheral wall of the hollow cylinder 91, the hollow cylinder 91 has a first end portion 911 and a second end portion 912 which are disposed opposite to each other in an axial direction, an inner peripheral wall of the hollow cylinder 91 is to be milled and the first end portion 911 thereof is opened.

As shown in fig. 1 to 4, the milling fixture 100 of the present utility model includes a machining base 10 and a first fixture assembly 20.

The first fixing assembly 20 includes a first placing seat 21, a plurality of first clamping members 22, and a pressing member 23. The first placement seat 21 is disposed above the processing base 10, and is used for placing the second end 912 of the hollow cylinder 91 opposite to the first end 911 and the protruding portion 92. That is, when the work 900 is placed on the first placing seat 21, it is placed on the first placing seat 21 in a state as shown in fig. 2, the open first end portion 911 of the hollow cylinder 91 is positioned above, so that the milling cutter is easily inserted into the hollow cylinder 91 to remove the surplus allowance of the inner peripheral wall of the hollow cylinder 91, and the second end portion 912 of the hollow cylinder 91 and the protruding portion 92 are positioned below and placed on the first placing seat 21.

The plurality of first clamping members 22 are disposed on the processing base 10 and circumferentially spaced along the first placement seat 21 to form a first clamping space 2201 between the plurality of first clamping members 22 for clamping the hollow cylinder 91. In this way, when the work 900 is placed on the first placing seat 21, the plurality of first clamping members 22 can form a clamping force extending radially along the hollow cylinder 91, thereby clamping the work 900, and restricting the movement of the work 900 in the horizontal direction.

The pressing component 23 is disposed on the processing base 10 and has at least one pressing member 231, where the pressing member 231 is disposed above the first placement seat 21 and is spaced from and opposite to the first placement seat 21, so as to cooperate with the first placement seat 21 to press the protruding portion 92. That is, when the hollow cylinder 91 and the projection 92 of the work 900 are placed on the first placing seat 21, the pressing member 23 can press the projection 92 against the first placing seat 21, so that the work 900 is not easily moved vertically.

In this way, the milling fixture 10 of the present utility model not only can limit the horizontal movement of the workpiece 900, but also can limit the vertical movement of the workpiece, which is beneficial to improving the stability of milling of the workpiece 900.

According to some preferred embodiments of the present utility model, as shown in fig. 2 and 3, the plurality of protruding portions 92 are provided, the plurality of protruding portions 92 are disposed at intervals along the circumferential direction of the hollow cylinder 91, each protruding portion 92 forms a positioning hole 9201, a placement cavity 2101 adapted to place the hollow cylinder 91 is formed in the first placement seat 21, and the first placement seat 21 is provided with a plurality of positioning posts 211 adapted to be inserted into the plurality of positioning holes 9201 correspondingly. In this way, when the user installs the hollow cylinder 91 of the workpiece 900 in the placement groove 2101 and sleeves the protrusion 92 on the outer side of the positioning column 211, the workpiece 900 is positioned, so that the workpiece 900 is convenient to be clamped and pressed. In addition, the cooperation of the positioning posts 211 and the positioning holes 9201 can also play a role in preventing the workpiece 900 from rotating, so that the milling fixture 100 can also effectively prevent the workpiece 900 from rotating without additionally providing an anti-rotation component, which is beneficial to improving the milling stability of the workpiece 900.

According to some preferred embodiments of the present utility model, as shown in fig. 3, each of the first clamping members 22 includes a support post 221 and a first clamping member 222. The lower ends of the support columns 221 are connected to the processing base 10. The first clamping members 222 are disposed at one end of the upper end of the supporting column 221, and the other end is a free end and located between the supporting columns 221, so as to form the first clamping space 2201 between the free ends. In other words, when the workpiece 900 is placed on the first placing seat 21, the free ends of the plurality of first clamps 222 meet to form a first clamping space 2201 adapted to clamp the hollow cylinder 91, so that the plurality of first clamps 222 can provide a plurality of clamping forces that are circumferentially spaced around the hollow cylinder 91 and radially extend along the hollow cylinder 91, thereby clamping the hollow cylinder 91.

According to some preferred embodiments of the present utility model, as shown in fig. 2 and 3, each of the first clamping members 22 further includes a telescopic driving member 223, a position detecting element (not shown), and a controller (not shown).

One end of the telescopic driving member 223 is connected to the upper end of the supporting column 221, and the other end is connected to the first clamping member 222, so as to drive the first clamping member 222 to move along the radial direction of the hollow cylinder 91. The position detecting element is configured to detect whether or not the free end of the first clamp 222 moves to an abutment position where it can abut against the outer peripheral wall of the hollow cylinder 91. The controller is respectively connected with the position detecting element and the telescopic driving piece 223, and is used for controlling the telescopic driving piece 223 to stop driving according to the movement of the free end to the abutting position.

That is, when the workpiece 900 is placed on the first placing seat 21, the controller controls the telescopic driving member 223 to drive the first clamping member 222 to approach the outer peripheral wall of the hollow cylinder 91 until the free end of the first clamping member 222 moves to an abutment position capable of abutting against the outer peripheral wall of the hollow cylinder 91, so that the position detecting element transmits a signal to the controller according to the movement of the free end of the first clamping member 222 to the abutment position, and the controller controls the telescopic driving member 223 to stop driving the first clamping member 222 to move after receiving the signal. In this way, the first clamping member 222 can be prevented from continuing to move and press the outer peripheral wall of the hollow cylinder 91, and the workpiece 900 is prevented from being scrapped due to extrusion deformation when clamped, which is beneficial to improving the yield of the workpiece 900 during processing.

Specifically, the telescopic driving member 223 may be a telescopic cylinder, and the position detecting element may be a position sensor.

According to some preferred embodiments of the present utility model, as shown in fig. 2 to 4, the plurality of protrusions 92 are provided at intervals along the circumferential direction of the hollow cylinder 91, and the plurality of pressing members 231 are provided. The pressing member 23 further includes a first support base 232, a first connecting member 233, a plurality of first connecting arms 234, and a pressing driving member 235.

The first supporting seat 232 is disposed between the first placing seat 21 and the processing base 10, a first channel 23201 extending vertically is formed in the first supporting seat 232, a plurality of first inclined channels 23202 communicating with the first channel 23201 and disposed around the first channel 23201 at intervals circumferentially are formed in the first supporting seat 232, the first inclined channels 23202 extend obliquely, and the distance between the plurality of first inclined channels 23202 increases gradually along the direction from top to bottom. The first connection member 233 is vertically movably disposed in the first passage 23201. The plurality of first connecting arms 234 are circumferentially spaced around the first connecting member 233, and each of the first connecting arms 234 has one end connected to the first connecting member 233 and the other end connected to the pressing member 231 after passing through one of the first inclined passages 23202. The pressing driving member 235 is connected to the first connecting member 233, and is configured to drive the first connecting member 233 to move vertically to drive the first connecting arms 234 to extend or retract from the first inclined channels 23202, so as to drive the pressing members 231 to gather together and simultaneously approach the first placement base 21, and further simultaneously press the plurality of protruding portions 92, or drive the pressing members 231 to separate from each other and simultaneously separate from the first placement base 21, and further simultaneously release the plurality of protruding portions 92. In this way, since the plurality of pressing members 231 of the pressing member 23 can simultaneously press or simultaneously release the plurality of protruding portions 92, the workpiece 900 is not easy to partially tilt during pressing or releasing, which is beneficial to protecting the workpiece 900 from being damaged due to collision with other components.

Specifically, in the example of fig. 2, there are two protruding portions 92, and the two protruding portions 92 are symmetrically disposed on both sides of the hollow cylinder 91. Therefore, the two first inclined channels 23202, the pressing members 231 and the first connecting arms 234 are symmetrically disposed on two sides of the first connecting member 233, and the two first inclined channels 23202 are symmetrically disposed on two sides of the first channel 23201, so that the pressing driving member 235 drives the first connecting member 233 to vertically rise, and can drive the two first connecting arms 234 to respectively extend out of the two first inclined channels 23202, and further drive the two pressing members 231 to separate from each other and simultaneously separate from the protruding portions 92, and further simultaneously release the protruding portions 92, and the pressing driving member 235 drives the first connecting member 233 to vertically descend, and can drive the two first connecting arms 234 to respectively retract the two first inclined channels 23202, and further drive the two pressing members 231 to gather together and simultaneously approach the two protruding portions 92, so as to simultaneously press the protruding portions 92.

It is of course understood that the number of the first connecting arms 234, the pressing members 231 and the first inclined passages 23202 includes, but is not limited to, a corresponding arrangement may be made according to the number of the protrusions 92.

Specifically, the pressing driver 235 may be an oil cylinder.

Specifically, as shown in fig. 4, the outer peripheral wall of the first connecting member 233 is provided with a plurality of connecting protrusions 2331 arranged at intervals along the circumferential direction thereof, each of the first connecting arms 234 forms a connecting groove 23401, and the connecting protrusions 2331 are fitted in the connecting grooves 23401 to achieve connection of the first connecting arms 234 and the first connecting member 233.

According to some preferred embodiments of the present utility model, as shown in fig. 3 to 4, the pressing member 23 further includes a screw member 236, and the screw member 236 horizontally penetrates the first passage 23201 and abuts against the first connecting member 233, so as to press the first connecting member 233 against the inner wall of the first supporting seat 232. That is, after the pressing member 231 vertically presses the protrusion 92 against the first placement seat 21, the user may press the first connection member 233 against the inner wall of the first support seat 232 through the screw member 236, so that the first connection member 233 is not easy to move vertically in the first channel 23201, which is advantageous for maintaining the pressing state of the pressing member 231 against the protrusion 92, and for improving the pressing reliability and stability of the pressing member 231.

According to some preferred embodiments of the present utility model, as shown in fig. 4, the pressing member 23 further includes a pressing buffer member 237, and the pressing buffer member 237 has elasticity and is provided on the lower surface of the pressing member 231 to be in contact with the protrusion 92 when the pressing member 231 presses the protrusion 92. In this way, the pressing buffer 237 can play a role of buffering between the pressing member 231 and the protrusion 92, preventing the pressing member 231 from crushing the protrusion 92. In particular, the compression buffer 237 may be made of a plastic material.

According to some preferred embodiments of the present utility model, as shown in fig. 1, 5 and 6, the milling fixture 100 further comprises a second fixture assembly 30, the second fixture assembly 30 being disposed upstream of the first fixture assembly 20. The second fixing assembly 30 includes a second placing seat 31 and a second clamping member 32, and the second placing seat 31 is disposed above the processing base 10 for placing the first end 911 of the hollow cylinder 91. The second clamping member 32 is disposed on the processing base 10 and has a plurality of second clamping members 321 circumferentially spaced along the second placement seat 31, a second clamping space 3201 is formed between the second clamping members 321, and is used for clamping a portion of the hollow cylinder 91 located below the protruding portion 92, and a milling gap 3202 suitable for milling is formed between the second clamping members 321 and the protruding portion 92. In this way, the milling tool is convenient to level the lower surface of the protruding portion 92, so that when the workpiece 900 is transferred to the first fixing assembly 20, the protruding portion 92 of the hollow cylinder 91 is placed on the first placing seat 21, the pressing member 231 is convenient to press the protruding portion 92 with a flat surface.

Preferably, the size of the milling gap 3202 in the vertical direction is greater than the size of the milling cutter, and is 10-12 mm, so that the milling cutter can conveniently pass through and flatten the lower surface of the protruding portion 92 during milling.

According to some preferred embodiments of the present utility model, as shown in fig. 5 and 6, the second clamping member 32 further includes a second support base 322, a second connecting member 323, a plurality of second connecting arms 324, and a clamping driver 325.

The second support seat 322 is disposed between the second placement seat 31 and the processing base 10, a second channel 32201 extending vertically is formed in the second support seat 322, a plurality of second inclined channels 32202 are formed in the second support seat 322, and the second inclined channels 32202 are communicated with the second channel 32201 and circumferentially spaced around the second channel 32201, and the second inclined channels 32202 extend obliquely, and the distances between the second inclined channels 32202 gradually increase along the direction from bottom to top.

The second connecting member 323 is vertically movably disposed in the second channel 32201. The second connecting arms 324 are circumferentially spaced around the second connecting member 323, and each of the second connecting arms 324 has one end connected to the first connecting member 233 and the other end penetrating out of one of the second inclined channels 32202 and being connected to one of the second clamping members 321. The clamping driving member 325 is connected to the second connecting member 323, and is configured to drive the second connecting member 323 to move vertically to drive the second connecting arms 324 to extend or retract from the second inclined channels 32202, so as to drive the second clamping members 321 to gather together and approach the outer peripheral wall of the hollow cylinder 91, thereby clamping the hollow cylinder 91, or drive the second clamping members 321 to separate from each other and release the hollow cylinder 91.

Specifically, in the example of fig. 5, three second clamping members 321 are circumferentially spaced along the second placement seat 31, correspondingly, three second connecting arms 324 and three second inclined channels 32202 are respectively circumferentially spaced along the second connecting member 323, and three second inclined channels 32202 are circumferentially spaced along the second channel 32201. Therefore, the clamping driving member 325 drives the second connecting member 323 to vertically rise, so as to drive the three second connecting arms 324 to respectively extend out of the three second inclined channels 32202, further drive the three second clamping members 321 to separate from each other and simultaneously away from the outer peripheral wall of the hollow cylinder 91, further simultaneously loosen the hollow cylinder 91, and the clamping driving member 325 drives the second connecting member 323 to vertically descend, so as to drive the three first connecting arms 234 to respectively shrink the three first inclined channels 23202, further drive the three second clamping members 321 to gather together and simultaneously approach the outer peripheral wall of the hollow cylinder 91, thereby simultaneously clamping the hollow cylinder 91.

It will be understood, of course, that the number of the second connecting arms 324, the second clamping members 321 and the second inclined channels 32202 includes, but is not limited to, that they may be correspondingly arranged according to the requirements.

Specifically, the clamping driver 325 may be a cylinder.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims (10)

1. Milling fixing device, its characterized in that is used for fixed work piece, the work piece includes a cavity section of thick bamboo and establishes at least one bulge of cavity section of thick bamboo periphery wall, cavity section of thick bamboo has along the relative first tip and the second tip that set up of axial, cavity section of thick bamboo inner peripheral wall waits to mill and its first tip is opened, milling fixing device includes:

a processing base;

a first securing assembly, the first securing assembly comprising:

the first placing seat is arranged above the processing base and is used for placing the second end part and the protruding part;

the first clamping components are arranged on the processing base and are circumferentially arranged at intervals along the first placing seat to form a first clamping space suitable for clamping the hollow cylinder; and

the pressing component is arranged on the processing base and is provided with at least one pressing piece, and the pressing piece is positioned above the first placing seat, is spaced from the first placing seat and is arranged opposite to the first placing seat, so that the pressing piece cooperates with the first placing seat to press the protruding portion.

2. The milling fixture of claim 1, wherein the plurality of protrusions are arranged at intervals along the circumferential direction of the hollow cylinder, each protrusion forms a positioning hole, a placement cavity for placing the hollow cylinder is formed in the first placement seat, and the first placement seat is provided with a plurality of positioning posts adapted to be correspondingly inserted into the plurality of positioning holes.

3. The milling fixture of claim 1, wherein the plurality of projections are spaced circumferentially about the hollow cylinder and the plurality of hold-down members are spaced circumferentially about the hollow cylinder; the pressing member further includes:

the first supporting seat is arranged between the first placing seat and the processing base, a first channel extending vertically is formed in the first supporting seat, a plurality of first inclined channels communicated with the first channel and arranged at intervals around the circumference of the first channel are formed in the first supporting seat, the first inclined channels extend obliquely, and the distances between the plurality of first inclined channels are gradually increased along the direction from bottom to top;

the first connecting piece is arranged in the first channel in a vertically movable manner;

the first connecting arms are circumferentially arranged at intervals around the first connecting piece, one end of each first connecting arm is connected with the first connecting piece, and the other end of each first connecting arm penetrates out of one first inclined channel and then is connected with one pressing piece; and

the pressing driving piece is connected with the first connecting piece and is used for driving the first connecting piece to move vertically to drive a plurality of first connecting arms to extend out of or retract into a plurality of first inclined channels to move respectively, so that a plurality of pressing pieces are driven to gather together and approach to the first placing seat so as to press a plurality of protruding parts, or a plurality of pressing pieces are driven to separate from each other and far away from the first placing seat so as to loosen a plurality of protruding parts.

4. A milling fixture according to claim 3, wherein the pressing member further comprises a screw member penetrating horizontally into the first passage and abutting against the first connecting member to press the first connecting member against the first support seat inner wall.

5. A milling fixture according to claim 3, wherein the pressing member further comprises a pressing buffer member having elasticity and provided on a lower surface of the pressing member for contacting the protruding portion when the pressing member presses the protruding portion.

6. A milling fixture according to claim 3, wherein the first connector peripheral wall is provided with a plurality of connection lugs arranged at intervals along its circumference, each of the first connection arms forming a connection recess in which the connection lugs are fitted.

7. The milling fixture of claim 1, wherein each of the first clamping members comprises:

the lower end of the support column is connected with the processing base; and

the first clamping pieces are arranged at one ends of the support columns, the other ends of the first clamping pieces are free ends and are positioned among the support columns, so that a first clamping space suitable for clamping is formed among the free ends.

8. The milling fixture of claim 7, wherein each of the first clamping members further comprises:

one end of the telescopic driving piece is connected with the upper end of the supporting column, and the other end of the telescopic driving piece is connected with the first clamping piece and used for driving the first clamping piece to move along the radial direction of the hollow cylinder;

a position detecting element for detecting whether or not the free end of the first clamp member is moved to an abutment position capable of abutting against the outer peripheral wall of the hollow cylinder; and

and the controller is respectively connected with the position detection element and the telescopic driving piece and is used for controlling the telescopic driving piece to stop driving according to the movement of the free end to the abutting position.

9. The milling fixture of claim 1, further comprising a second fixture assembly disposed upstream of the first fixture assembly, the second fixture assembly comprising:

the second placing seat is arranged above the processing base and is used for placing the first end part; and

the second clamping component is arranged on the processing base and is provided with a plurality of second clamping pieces, a second clamping space is formed by surrounding the second clamping pieces, the second clamping space is used for clamping the part, below the protruding part, of the hollow cylinder, and a milling gap suitable for milling is formed between the second clamping pieces and the protruding part.

10. The milling fixture of claim 9, wherein the second clamping member further comprises:

the second supporting seat is arranged between the second placing seat and the processing base, a second channel extending vertically is formed in the second supporting seat, a plurality of second inclined channels communicated with the second channel and arranged at intervals around the second channel in the second supporting seat in the circumferential direction are formed in the second supporting seat, the second inclined channels extend obliquely, and the distances among the plurality of second inclined channels are gradually increased along the direction from bottom to top;

the second connecting piece is arranged in the second channel in a vertically movable manner;

the second connecting arms are circumferentially arranged at intervals around the second connecting piece, one end of each second connecting arm is connected with the second connecting piece, and the other end of each second connecting arm penetrates out of one second inclined channel and then is connected with one second clamping piece; and

the clamping driving piece is connected with the second connecting piece and is used for driving the second connecting piece to move vertically to drive a plurality of second connecting arms to extend out of or retract into a plurality of second inclined channels in a moving mode, so that a plurality of second clamping pieces are driven to gather together to clamp the hollow cylinder, or a plurality of second clamping pieces are driven to separate from each other and simultaneously loosen the hollow cylinder.