CN111375807A

CN111375807A - Milling machine tool for mixing mill

Info

Publication number: CN111375807A
Application number: CN202010250919.1A
Authority: CN
Inventors: 黄云凡
Original assignee: Chongqing Shangze Mechanical And Electrical Co ltd
Current assignee: Chongqing Shangze Mechanical And Electrical Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-07-07
Anticipated expiration: 2040-04-01
Also published as: CN111375807B

Abstract

The invention relates to the technical field of milling equipment, in particular to a milling machine tool for milling of a mixing mill, which comprises a rack, wherein a processing platform is arranged on the rack in a sliding manner, a scissor-type lifting mechanism is arranged on the lower side of the processing platform, the scissor-type lifting mechanism comprises a first hinge rod group and a second hinge rod group, the upper end of the first hinge rod group is hinged with the processing platform, and the upper end of the second hinge rod group is connected with the processing platform in a sliding manner; the lower end of the first hinge rod group is hinged with the rack, and the lower end of the second hinge rod group is hinged with an adjusting block; the lower side of the lifting mechanism is provided with a screw rod, the end part of the screw rod is rotationally connected with the rack, and the middle part of the screw rod penetrates through the adjusting block and is in threaded fit with the adjusting block. This scheme of adoption can more solve prior art's processing platform and be not convenient for adjust, operate inconvenient technical problem when adjusting the position of work piece.

Description

Milling machine tool for mixing mill

Technical Field

The invention relates to the technical field of milling equipment, in particular to a milling machine tool of a mixing roll.

Background

The mixer is a mixing device for mixing raw rubber and compounding ingredients, and the housing of the mixer is generally integrally formed by milling a blank. The shell size of mixing roll is great, mill processing to the position of co-altitude not, need adjust the station of work piece blank, but because the quality of work piece blank is heavier, be difficult to adjust and change the machining-position station of work piece blank as required, prior art generally adopts lifting device to shift and adjust the station to work piece blank, but lifting device size is huge, not all workshops all have sufficient space can install lifting device, and the equipment that installation lifting device consumed drops into and the space in workshop drops into all great, can increase the processing cost of firm by a wide margin, consequently, to the less small-size enterprise in workshop, installation lifting device is not actual, consequently, need urgently to develop a small, convenient operation's machine tool.

Disclosure of Invention

The invention aims to provide a milling machine tool for a mixing mill, and provides a processing machine tool which is small in size and convenient to operate.

In order to achieve the purpose, the invention adopts the following technical scheme: the milling machine tool for milling of the mixing mill comprises a rack, wherein a processing platform is arranged on the rack in a sliding manner, a scissor type lifting mechanism is arranged on the lower side of the processing platform and comprises a first hinge rod group and a second hinge rod group, the upper end of the first hinge rod group is hinged with the processing platform, and the upper end of the second hinge rod group is connected with the processing platform in a sliding manner; the lower end of the first hinge rod group is hinged with the rack, and the lower end of the second hinge rod group is hinged with an adjusting block; the lower side of the lifting mechanism is provided with a screw rod, the end part of the screw rod is rotationally connected with the rack, and the middle part of the screw rod penetrates through the adjusting block and is in threaded fit with the adjusting block.

The principle and the advantages of the scheme are as follows: the processing platform is connected with the rack in a sliding manner, so that a user can adjust the height of the processing platform according to needs, the purpose of adjusting the height position of a workpiece blank is achieved, and a milling cutter can process the workpiece on the processing platform conveniently; a scissor-fork type lifting mechanism is arranged on the lower side of the processing platform, so that firstly, a user can conveniently adjust the height of the processing platform, and secondly, the processing platform can be supported, and the processing platform can be more stably maintained at a required height; the lifting mechanism adopts a scissor-type lifting mechanism structure, so that the acting point between the lifting mechanism and the processing platform is increased, the supporting effect of the lifting mechanism on the processing platform is further enhanced, and the processing platform is more stable; the lifting mechanism of the scheme is driven by the matching of the adjusting block and the screw rod, so that a user can control the movement of the lifting mechanism only by controlling the rotation of the screw rod, and the lifting mechanism of the scheme is simple to operate, easy to control and more stable to operate.

Preferably, as an improvement, a fixing mechanism for fixing the workpiece is arranged on the processing platform.

The scheme can position and fix the workpiece, and avoids the situation that the workpiece deflects due to stress in the machining process, so that the workpiece is machined more accurately.

Preferably, as an improvement, the processing platform is provided with a positioning groove for accommodating the workpiece, the fixing mechanism comprises a plurality of groups of positioning components, and the plurality of groups of positioning components are uniformly fixed around the positioning groove.

The positioning groove can pre-position the workpiece, so that the workpiece can be fixed at a later stage conveniently; this scheme adopts multiunit locating component to fix the work piece, can follow the degree of freedom of a plurality of directions restriction work piece to it is more stable to make the work piece fixed.

Preferably, as an improvement, locating component includes that locating piece and first elasticity reset, is equipped with the holding tank that is used for holding the locating piece on the processing platform, and in the holding tank was located in the locating piece slip, the one end that first elasticity reset the piece was fixed with the holding tank, the other end was fixed with the head end of locating piece, outside the tail end of locating piece stretched out the holding tank, and the tail end of locating piece can support tightly with the work piece.

This scheme makes the user arrange the work piece back in the constant head tank through the cooperation that locating piece and first elasticity reset, and the tail end of locating piece can be fixed the work piece fast under the effect that first elasticity reset for fixed work piece consuming time, thereby improved machining efficiency.

Preferably, as an improvement, the tail end of the positioning block is fixedly provided with a supporting block, the lower end of the supporting block is connected with the positioning groove in a sliding manner, and one side, facing the center of the positioning groove, of the supporting block is provided with a wedge surface for guiding the workpiece.

This scheme is through the direction of tight piece to the work piece that supports, makes the work piece can get into between a plurality of locating component more steadily to be convenient for fix the work piece.

Preferably, as an improvement, the rack is further provided with a carriage in a sliding manner, the carriage is fixedly provided with a milling mechanism, the milling mechanism comprises a milling shell and a milling cutter, the milling shell is fixed to the carriage, and the milling cutter is rotatably connected with the milling shell.

When the layer board of this scheme slided, can drive and mill shell and milling cutter and slide together, compare in milling mechanism position fixing, only the condition that processing platform can drive the work piece motion, this scheme enables that the course of working is more convenient and accurate user can select to adjust processing platform or mill the position of mechanism according to actual need.

Preferably, as an improvement, the milling mechanism further comprises a rotating shaft, the rotating shaft is rotatably connected with the milling shell, a plurality of milling cutter mounting blocks are slidably arranged in the rotating shaft, and each milling cutter mounting block is fixedly provided with a milling cutter; each milling cutter mounting block is fixedly provided with an operating member, and the free end of the operating member extends out of the rotating shaft and is in sliding connection with the rotating shaft; an annular wheel disc is connected to the inner circumference of the rotating shaft in a rotating mode, the milling cutter mounting blocks are all located in the ring of the wheel disc, a plurality of limiting bulges are arranged at the lower end of the wheel disc in a clearance mode, and gaps for the operating part to slide are reserved among the limiting bulges; an inner sliding groove is obliquely arranged on the inner peripheral wall of the wheel disc, and a sliding block matched with the inner sliding groove is fixedly arranged on the milling cutter mounting block; still be equipped with the second elasticity piece that resets between milling cutter installation piece and the pivot, the one end and the control piece of second elasticity piece that resets support tightly, and the other end and the pivot of second elasticity piece that resets are fixed.

According to the scheme, the plurality of milling cutter mounting blocks and the milling cutters are arranged in the rotating shaft in a sliding mode, and when a user needs to use a milling cutter of a certain type, the corresponding control piece is pressed to replace the milling cutter; when the operating member is pressed, the operating member drives the milling cutter mounting block to move downwards, and the milling cutter mounting block drives the milling cutter to move downwards, so that the purpose of moving the required milling cutter to a station is achieved; when the milling cutter mounting block moves downwards, the sliding block can be driven to move downwards at the same time, and the sliding block is matched with the inner sliding groove, so that the wheel disc deflects at a certain angle; when the control piece slides to the lower side of the limiting protrusion, the control piece is loosened, the control piece can slide upwards under the action of the second elastic reset piece until the control piece is abutted against the limiting protrusion, so that the aim that the control piece is fixed to the lower side of the limiting protrusion is achieved, and the aim that the milling cutter mounting block and the milling cutter are fixed to a station is achieved.

Preferably, as an improvement, the limiting protrusion is provided with a clamping groove, and the control member is provided with a wedge surface matched with the clamping groove.

The cooperation of the control member and the clamping groove of the scheme enables the cooperation between the control member corresponding to the limiting protrusion and the milling cutter on the station to be more stable, so that the milling cutter is more stable in working.

Preferably, as an improvement, the frame is fixedly provided with a supporting plate, the lower end of the first hinge rod group is fixed with the supporting plate, and the adjusting block is connected with the supporting plate in a sliding manner.

The supporting plate can support the first hinge rod group, and compared with the condition that the lower end of the first hinge rod group is directly contacted with the ground, the horizontal height of the lower end of the first hinge rod group is fixed, so that the condition that the rack and the first hinge rod group are unbalanced due to unbalanced ground height is avoided, and the height adjustment of the lifting mechanism is more accurate; simultaneously, the backup pad can also carry on spacingly to the regulating block, further restricts the motion dimension of regulating block to the operation that makes the regulating block is more stable.

Preferably, as an improvement, the supporting plate is fixedly provided with support legs, the lower ends of the support legs are flush with the lower end of the rack, the screw rod is located on the lower side of the supporting plate, and the end part of the screw rod is rotatably connected with the support legs.

The stabilizer blade of this scheme can provide the supporting role for the backup pad, avoids the backup pad atress too big and the condition that takes place distortion, can also carry on spacingly to the tip of screw rod simultaneously, makes the position of screw rod more stable to the cooperation that makes screw rod and regulating block is more stable.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a milling machine according to the present invention.

Fig. 2 is a left side cross-sectional view of a first embodiment of the invention, which is taken along the direction of the arrow in fig. 1 as a main view direction, and the cross-sectional view passes through the center of the accommodating groove.

Fig. 3 is a left side view of a second embodiment of the present invention, which is taken from the direction of the arrow in fig. 1 as a front view.

Fig. 4 is a top cross-sectional view of the rotating shaft according to the second embodiment of the present invention, mainly illustrating the positional relationship between the rotating shaft and the internal structures thereof.

Fig. 5 is an exploded three-dimensional structure diagram of the spindle according to the second embodiment of the present invention, which mainly shows the shapes of the wheel disc and the milling cutter mounting block.

Fig. 6 is a schematic view of a state in which the manipulation member is located in a gap between adjacent limiting protrusions according to a second embodiment of the present invention.

Fig. 7 is a schematic view of a state in which the manipulating member is engaged with the engaging groove of the limiting protrusion according to the second embodiment of the present invention.

Fig. 8 is a sectional view taken along a-a of fig. 4.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the milling machine comprises a rack 1, a processing platform 2, a first hinge rod 3, a second hinge rod 4, a supporting plate 5, a supporting leg 6, a first sliding groove 7, an adjusting block 8, a screw rod 9, a screw rod motor 10, a positioning groove 11, a positioning block 12, a first elastic resetting piece 13, a containing groove 14, a butting block 15, a buffer cushion 16, a support 17, a planker 18, a milling cutter 19, a milling shell 20, an output end 21, a rotating shaft 22, a milling cutter mounting block 23, an operation piece 24, a wheel disc 25, a limiting bulge 26, an inner sliding groove 27, a sliding block 28, a second elastic resetting piece 29 and a clamping groove 30.

Example one

As shown in the attached figures 1 and 2: the milling machine tool for the mixing mill comprises a frame 1, wherein a processing platform 2 is arranged on the frame 1 in a sliding mode through a guide rail, two groups of scissor-type lifting mechanisms with the same structure are arranged on the lower side of the processing platform 2, each scissor-type lifting mechanism comprises a first hinge rod group and a second hinge rod group, each first hinge rod group comprises a plurality of first hinge rods 3 hinged end to end, each second hinge rod group comprises a plurality of second hinge rods 4 hinged end to end, and the first hinge rod group and the second hinge rod groups are hinged in a shaft pin mode; the first hinge rod group and the second hinge rod group are arranged in a staggered mode, and the middle parts of the first hinge rod 3 and the second hinge rod 4 are hinged with each other through shaft pins; the upper end of the first hinge rod group is hinged with the processing platform 2 through a shaft pin, the upper end of the second hinge rod group is connected with the processing platform 2 in a sliding mode through a sliding groove, specifically, the processing platform 2 is provided with the sliding groove, a rectangular block is connected in the sliding groove in a sliding mode through a guide rail, and the upper end of the second hinge rod 4 is hinged with the rectangular block through the shaft pin; the lower end of the first hinge rod group is hinged with the rack 1 through a shaft pin, the lower end of the second hinge rod group is hinged with an adjusting block 8 through the shaft pin, specifically, the rack 1 is fixedly connected with a supporting plate 5 through a bolt, the supporting plate 5 is fixedly welded with a hinge lug, and the lower end of the first hinge rod 3 is hinged with the hinge lug through the shaft pin; still be equipped with stabilizer blade 6 through the bolt fastening in backup pad 5, the lower extreme of stabilizer blade 6 and the lower extreme parallel and level of frame 1 open the first spout 7 that is used for the direction in backup pad 5, and regulating block 8 and first spout 7 pass through guide rail sliding connection.

As shown in fig. 1, the lower end of the adjusting block 8 extends to the lower side of the supporting plate 5 through the first chute 7, the lower side of the lifting mechanism is provided with a screw 9, the screw 9 is positioned at the lower side of the supporting plate 5, the left end of the screw 9 is rotatably connected with the frame 1 through a bearing, and the right end of the screw 9 is rotatably connected with the supporting leg 6 through a bearing; a first thread section and a second thread section which are opposite in spiral direction are arranged on the screw rod 9, through holes for the screw rod 9 to pass through are formed in the adjusting blocks 8 at the lower ends of the two groups of scissor-fork type lifting mechanisms, the screw rod 9 sequentially passes through the two adjusting blocks 8, one adjusting block 8 is in thread fit with the first thread section, and the other adjusting block 8 is in thread fit with the second thread section; the support plate 5 is fixedly connected with a screw motor 10 through a bolt, a stepping motor is taken as an example for description here, the screw motor 10 is a motor capable of rotating forward and backward, and an output shaft of the screw motor 10 is coaxially clamped with the right end of the screw 9.

As shown in fig. 2, the processing platform 2 is provided with positioning slots 11 for accommodating workpieces, the processing platform 2 is provided with a fixing mechanism for fixing the workpieces, the fixing mechanism includes a plurality of sets of positioning assemblies, here, the positioning slots 11 are taken as a rectangle as an example, the positioning assemblies are provided with four sets, and the four sets of positioning assemblies are uniformly fixed around the positioning slots 11; taking the positioning assembly located on the left side in fig. 2 as an example, the specific structure of the positioning assembly is described, the positioning assembly includes a positioning block 12 and a first elastic reset piece 13, an accommodating groove 14 for accommodating the positioning block 12 is provided on the processing platform 2, and the positioning block 12 is horizontally slidably disposed in the accommodating groove 14 through a sliding groove; the first elastic resetting piece 13 is a pressure spring, the left end of the first elastic resetting piece 13 is fixedly clamped with the accommodating groove 14, the right end of the first elastic resetting piece 13 is fixedly welded with the left end of the positioning block 12, the right end of the positioning block 12 extends out of the accommodating groove 14, the right end of the positioning block 12 is fixedly clamped with a resisting block 15, the lower end of the resisting block 15 is connected with the positioning groove 11 in a sliding mode through a sliding groove, and one side, facing the center of the positioning groove 11, of the resisting block 15 is provided with a wedge surface used for guiding a workpiece; a buffer 16 is fixed on one side of the abutting block 15, which is provided with a wedge surface, by gluing, and here, a sponge is taken as an example, and lubricating oil is smeared on the sponge.

The specific implementation process is as follows: the driving screw motor 10 drives the screw rod 9 to rotate, and the screw rod 9 drives the two adjusting blocks 8 to move oppositely or in a deviating mode, so that the purpose of extending or shortening the lifting mechanism is achieved, the lifting mechanism can drive the processing platform 2 to move up and down, and the height of the processing platform 2 is adjusted.

When the workpiece blank is placed, a mechanical arm or other transportation equipment is used for conveying the workpiece blank to the position right above the positioning groove 11 and driving the workpiece blank to slide down to the position of the abutting block 15; after the workpiece blank slides down to the height of the upper end of the abutting block 15, when the workpiece blank continues to move downwards, the workpiece blank can smoothly enter the positions among the four abutting blocks 15 under the guidance of the wedge surface, meanwhile, the workpiece blank can outwards extrude the abutting blocks 15, the abutting blocks 15 outwards extrude the positioning block 12, the positioning block 12 extrudes the first elastic resetting piece 13 to enable the first elastic resetting piece 13 to be elastically deformed, and therefore the first elastic resetting piece 13 can provide reaction force for the positioning block 12 and the abutting blocks 15 to extrude and position the workpiece blank.

The processing platform 2 is connected with the frame 1 in a sliding way, so that a user can adjust the height of the processing platform 2 according to needs, and workpieces on the processing platform 2 can be processed more conveniently; two groups of lifting mechanisms are arranged on the lower side of the processing platform 2, so that firstly, a user can conveniently adjust the height of the processing platform 2, and secondly, the processing platform 2 can be supported, and the processing platform 2 can be more stably maintained at a required height; the lifting mechanism adopts a scissor type lifting mechanism structure, so that the acting point between the lifting mechanism and the processing platform 2 is increased, the supporting effect of the lifting mechanism on the processing platform 2 is further enhanced, and the processing platform 2 is more stable; the lifting mechanism of the scheme is driven by the matching of the adjusting block 8 and the screw rod 9, so that a user can control the movement of the lifting mechanism only by controlling the rotation of the screw rod 9, and the lifting mechanism of the scheme is simple to operate, easy to control and more stable in operation.

Simultaneously, this scheme makes the user arrange the work piece in constant head tank 11 back through the cooperation of locating piece 12 and first elasticity piece 13 that resets, and the tail end of locating piece 12 can be fixed the work piece fast under the effect of first elasticity piece 13 that resets for consuming time of fixed work piece, thereby improved machining efficiency.

Example two

As shown in fig. 3, the difference between the first embodiment and the second embodiment is that a support 17 is vertically and slidably connected to a rack 1 through a sliding groove, a carriage 18 is horizontally and slidably connected to the support 17 through a guide rail, a milling mechanism is fixedly arranged on the carriage 18 through a bolt, the milling mechanism includes a milling housing 20, a rotating shaft 22 and a milling cutter 19, the milling housing 20 and the carriage 18 are fixed through a bolt, a milling motor is fixedly mounted in the milling housing 20 through a bolt, an outer peripheral wall of an output end 21 of the milling motor is rotatably connected to the milling housing 20 through a bearing, and the output end 21 of the milling motor is coaxially clamped and fixed to the rotating shaft 22, so that the rotating shaft 22 is rotatably connected.

As shown in fig. 4-8, a plurality of milling cutter mounting blocks 23 are slidably disposed in the rotating shaft 22, and here, four milling cutter mounting blocks 23 are taken as an example for explanation, as shown in fig. 4, the outer peripheries of the milling cutter mounting blocks 23 are arc-shaped with the same diameter, and when the four milling cutter mounting blocks 23 are closed, the outer peripheries of the milling cutter mounting blocks 23 are combined into a circle; each milling cutter mounting block 23 is fixedly provided with a milling cutter 19 in a clamping manner, and the type and the size of the mounted milling cutter 19 can be selected according to the actual needs of users; each milling cutter mounting block 23 is fixedly welded with an operating member 24, and the free end of the operating member 24 extends out of the rotating shaft 22 and is connected with the rotating shaft 22 in a sliding manner through a sliding chute; an annular wheel disc 25 is rotatably connected in the rotating shaft 22 along the circumferential direction, and here, taking the example that the wheel disc 25 is rotatably connected with the rotating shaft 22 through a bearing (not shown in the figure), a plurality of milling cutter mounting blocks 23 are all positioned in the ring of the wheel disc 25, as shown in fig. 6, a plurality of limiting protrusions 26 are arranged at the lower end of the wheel disc 25 in a clearance manner, and a clearance for the operating member 24 to slide is reserved between the limiting protrusions 26; as shown in fig. 7, the limiting protrusion 26 is provided with a locking groove 30, and the operating member 24 is provided with a wedge surface engaged with the locking groove 30. As shown in fig. 5, an inner sliding groove 27 is obliquely arranged on the inner peripheral wall of the wheel disc 25, and a sliding block 28 matched with the inner sliding groove 27 is fixedly arranged on the milling cutter mounting block 23; as shown in fig. 8, a second elastic restoring member 29 is further disposed between the milling cutter mounting block 23 and the rotating shaft 22, and in an actual production process, the second elastic restoring member 29 may also be sleeved outside the milling cutter mounting block 23; here, for example, a second elastic restoring member 29 is disposed at a lower side of each of the operation members 24, the second elastic restoring member 29 is a compression spring, an upper end of the second elastic restoring member 29 is welded to the operation member 24, and a lower end of the second elastic restoring member 29 is welded to the rotating shaft 22.

When a user needs to use a milling cutter 19 of a certain type, the milling cutter 19 can be replaced by pressing the corresponding control piece 24, and during operation, the control piece 24 can be manually pressed according to needs, and mechanical structures such as a mechanical arm or an electric telescopic rod can be arranged to drive the control piece 24; when the operating member 24 is pressed, the operating member 24 drives the milling cutter mounting block 23 to move downwards, and the milling cutter mounting block 23 drives the milling cutter 19 to move downwards, so that the purpose of moving the required milling cutter 19 to a station is achieved; when the milling cutter mounting block 23 moves downwards, the sliding block 28 is driven to move downwards at the same time, and the sliding block 28 is matched with the inner sliding groove 27, so that the wheel disc 25 deflects at a certain angle; after the control piece 24 slides downwards to the lower side of the limiting protrusion 26, the control piece 24 is released, and the control piece 24 can slide upwards under the action of the second elastic reset piece 29 until the control piece 24 is tightly abutted against the limiting protrusion 26, so that the purpose of fixing the control piece 24 on the lower side of the limiting protrusion 26 is realized, and the purpose of fixing the milling cutter mounting block 23 and the milling cutter 19 on a station is further realized; the control piece 24 and the clamping groove 30 are matched, so that the matching between the limiting protrusion 26 and the control piece 24 corresponding to the milling cutter 19 on the station is more stable, and the milling cutter 19 is more stable in working.

The plurality of milling cutter mounting blocks 23 and the milling cutters 19 are arranged in the rotating shaft 22 in a sliding mode, so that a user can replace the milling cutters 19 more conveniently and rapidly, time waste caused by replacement of the milling cutters 19 is saved, time waste and equipment investment caused by conveying workpieces to a plurality of stations for milling are avoided, the machining efficiency of the workpieces is improved, and the machining cost of the workpieces is saved.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Milling machine tool for processing of mixing roll, including the frame, its characterized in that: the machining platform is arranged on the rack in a sliding mode, the shear fork type lifting mechanism is arranged on the lower side of the machining platform and comprises a first hinge rod group and a second hinge rod group, the upper end of the first hinge rod group is hinged with the machining platform, and the upper end of the second hinge rod group is connected with the machining platform in a sliding mode; the lower end of the first hinge rod group is hinged with the rack, and the lower end of the second hinge rod group is hinged with an adjusting block; the lower side of the lifting mechanism is provided with a screw rod, the end part of the screw rod is rotationally connected with the rack, and the middle part of the screw rod penetrates through the adjusting block and is in threaded fit with the adjusting block.

2. The milling machine according to claim 1, wherein: and the processing platform is provided with a fixing mechanism for fixing the workpiece.

3. The milling machine according to claim 2, wherein: the processing platform is provided with a positioning groove for accommodating a workpiece, the fixing mechanism comprises a plurality of groups of positioning components, and the plurality of groups of positioning components are uniformly fixed around the positioning groove.

4. The milling machine according to claim 3, wherein: the locating component comprises a locating block and a first elastic resetting piece, a containing groove used for containing the locating block is formed in the processing platform, the locating block is arranged in the containing groove in a sliding mode, one end of the first elastic resetting piece is fixed to the containing groove, the other end of the first elastic resetting piece is fixed to the head end of the locating block, the tail end of the locating block stretches out of the containing groove, and the tail end of the locating block can be abutted to a workpiece tightly.

5. The milling machine according to claim 4, wherein: the tail end of the positioning block is fixedly provided with a propping block, the lower end of the propping block is connected with the positioning groove in a sliding manner, and one side, facing the center of the positioning groove, of the propping block is provided with a wedge surface for guiding a workpiece.

6. The milling machine according to claim 1, wherein: the milling machine is characterized in that a carriage is further arranged on the rack in a sliding mode, a milling mechanism is fixedly arranged on the carriage and comprises a milling shell and a milling cutter, the milling shell is fixed to the carriage, and the milling cutter is rotatably connected with the milling shell.

7. The milling machine according to claim 6, wherein: the milling mechanism further comprises a rotating shaft, the rotating shaft is rotationally connected with the milling shell, a plurality of milling cutter mounting blocks are arranged in the rotating shaft in a sliding mode, and each milling cutter mounting block is fixedly provided with a milling cutter; each milling cutter mounting block is fixedly provided with an operating member, and the free end of the operating member extends out of the rotating shaft and is in sliding connection with the rotating shaft; an annular wheel disc is connected to the inner circumference of the rotating shaft in a rotating mode, the milling cutter mounting blocks are all located in the ring of the wheel disc, a plurality of limiting bulges are arranged at the lower end of the wheel disc in a clearance mode, and gaps for the operating part to slide are reserved among the limiting bulges; an inner sliding groove is obliquely arranged on the inner peripheral wall of the wheel disc, and a sliding block matched with the inner sliding groove is fixedly arranged on the milling cutter mounting block; still be equipped with the second elasticity piece that resets between milling cutter installation piece and the pivot, the one end and the control piece of second elasticity piece that resets support tightly, and the other end and the pivot of second elasticity piece that resets are fixed.

8. The milling machine according to claim 7, wherein: the limiting protrusion is provided with a clamping groove, and the control piece is provided with a wedge surface matched with the clamping groove.

9. The milling machine according to claim 1, wherein: the support plate is fixedly arranged on the rack, the lower end of the first hinge rod group is fixed with the support plate, and the adjusting block is connected with the support plate in a sliding mode.

10. The milling machine according to claim 9, wherein: the supporting plate is fixedly provided with support legs, the lower ends of the support legs are flush with the lower end of the rack, the screw rod is located on the lower side of the supporting plate, and the end portion of the screw rod is rotatably connected with the support legs.