CN113618605B - Car metal parts free form surface finish polishing equipment - Google Patents

Abstract

The invention discloses automobile metal part free-form surface fine polishing equipment which comprises a supporting table, a driving mechanism, a fine polishing facility and a clamping facility, wherein the driving mechanism, the fine polishing facility and the clamping facility are arranged above the supporting table; in order to support the clamping facilities, a suspended positioning ring is arranged above the supporting table, and four corners of the bottom wall of the positioning ring are fixedly connected with the top wall of the supporting table through corner piles. According to the automobile metal part free-form surface fine polishing equipment, multiple groups of fine polishing facilities under the work of one motor can perform fine polishing on multiple same metal parts respectively, so that the probability that the precision of the metal parts after the fine polishing is greatly different is reduced.

Description

Car metal parts free form surface finish polishing equipment

Technical Field

The invention belongs to the technical field of automobile metal part machining, and particularly relates to free-form surface finish polishing equipment for an automobile metal part.

Background

Automotive metal parts, as the foundation of the automotive industry, are essential factors supporting the continued healthy development of the automotive industry. At present, automobile metal part production enterprises are separated from finished automobile enterprises and form specialized part groups, and become a global trend. The international famous enterprises for automobiles and metal parts almost establish joint-fund or sole-fund enterprises in China, and the enterprises introducing technology joint-fund have over 1000. With the international automobile industry starting to implement the metal part global procurement strategy and the international transnational automobile enterprise to implement the localization strategy, the domestic market will have huge gaps of metal part accessories.

Patent application No. CN201310288499.6 discloses a metal curved surface flexible polishing tool, relating to a polishing tool. The polishing head is provided with a polishing head, a shell, a front end cover, a rear end cover, a gasket, a thrust bearing, a universal joint, a gear transmission mechanism, a coupling, a motor and a flange, and has the advantages of realizing high-efficiency polishing, adapting to metal surfaces with different curvatures, greatly increasing the application range of the polishing head, adapting to the polishing requirements of higher speed and lower speed and the like. However, such devices for polishing the curved surface of the metal are generally in one-to-one correspondence, that is, one group of devices corresponds to the processing of one metal part, and for the automobile industry requiring mass production of metal parts, a large amount of devices are required to be arranged to produce the metal parts in large batch, which results in low precision polishing efficiency, and in addition, each group of devices is required to be provided with electric power facilities such as motors (and other driving mechanisms), and the cost is increased; and a group of equipment only polishes a metal part, and the problem that precision of each metal part product polished on different equipment is greatly different easily occurs.

Disclosure of Invention

The invention aims to provide free-form surface finish polishing equipment for an automobile metal part, which aims to solve the problems in the second section of the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a free-form surface finish-polishing device for automobile metal parts comprises a supporting table, and a driving mechanism, a finish-polishing facility and a clamping facility which are arranged above the supporting table, wherein the supporting table is also internally provided with chip removal facilities for automatically cleaning chips;

a columnar fixing column is fixedly welded at the center of the top surface of the supporting table, and the driving mechanism is installed on the fixing column;

the driving mechanism comprises a first motor welded on the top wall of the fixed column, a transmission shaft with one end extending into the invagination groove and two lower extension rods symmetrical to the two sides of the transmission shaft, so that the adjustment of the positions of a plurality of groups (at least two groups, and the number of the groups is an even number) of fine polishing facilities which are symmetrical to each other is realized by the operation of one first motor, each group of fine polishing facilities can independently perform fine polishing operation without mutual influence, the fine polishing efficiency is improved, the arrangement of electric power facilities is reduced and the use of electric power is reduced due to the fact that only one motor is used; multiple groups of fine polishing facilities under the work of one motor can perform fine polishing on multiple same metal parts respectively (the fine polishing process of each metal part is consistent), so that the precision of the metal parts after fine polishing is consistent, and the quality control is more facilitated to be mastered;

the fine polishing facility comprises a supporting seat and a fine polishing assembly, wherein the supporting seat is symmetrically arranged at one end, far away from the transmission shaft, of the lower extension rod, and the fine polishing assembly is arranged on the supporting seat.

Preferably, the other end of the transmission shaft is arranged inside the fixed column, the output shaft of the first motor is coaxially connected with the transmission shaft, and the bottom end of the transmission shaft is rotatably connected with the bottom wall of the invagination groove.

Further, coaxial cover is equipped with outer lantern ring, two on the outer wall that the transmission shaft is located the one end of invaginating inslot, the one end that lower extension pole is close to each other all with the outer lantern ring outer wall welding, and two lower extension poles themselves meet as an organic wholely on outer lantern ring outer wall.

Furthermore, the lower extension rod is of a three-section structure, the section connected with the outer sleeve ring and the section connected with the support seat are kept horizontal, and the section between the two sections is obliquely arranged.

Preferably, the fine polishing assembly comprises a second motor welded to a top wall of one end of the support seat, which is far away from the lower extension rod, and a fine polishing block rotatably connected in the support seat, and an output shaft of the second motor is coaxially connected with the fine polishing block.

Preferably, two bearing beam bodies connected to the outer wall of the fixed column are symmetrically connected to two sides of the top wall of the supporting table, and a suspended positioning ring is further arranged above the supporting table.

Further, the centre gripping facility includes that fixed cover locates the outside linking portion of holding ring, fixed welding in linking portion and be close to the fixing base of fixed column one end and set up in the perpendicular flitch that erects that the fixing base is close to fixed column one end, rotate in the fixing base inner chamber and be connected with the single line lead screw, install rotatable regulation shifting block on the fixing base roof, the single line lead screw pass the fixing base and with adjust shifting block coaxial coupling, erect flitch one end and stretch into in the fixing base inner chamber and the screw thread cup joints on the single line lead screw.

Further, it has the double-thread lead screw to erect in the flitch inner chamber swivelling joint, erects flitch roof welding and has the third motor, the output shaft and the double-thread lead screw coaxial coupling of third motor, the equal screw thread in upper and lower both ends of double-thread lead screw has cup jointed along the centre gripping flitch that erects flitch inner wall and go up and down, the screw thread orientation at double-thread lead screw both ends is opposite, and two the centre gripping flitch just sets up in the opposite both ends of double-thread lead screw thread orientation.

Furthermore, the chip removal facility includes that the lift sets up in a supporting bench inner chamber and inlays in the collecting ring of a supporting bench roof, fixed connection in the first hydraulic stem of collecting ring bottom surface both sides, two symmetries install in the second hydraulic stem of a supporting bench inner chamber both sides and install in the scraping wings of the flexible end of two second hydraulic stems, two the scraping wings is the C shape platelike that the thickness is thinner.

Furthermore, two discharge ports communicated with the inner cavity of the support platform are formed in the bottom surface of the support platform, two groups of guide assemblies are stacked on two sides of the inner cavity of the support platform, and each guide assembly comprises two guide seats symmetrically arranged on two sides of each discharge port.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides a free-form surface finish-polishing device for automobile metal parts, which is characterized in that a first motor is arranged on the top wall of a fixed column, a transmission shaft is rotationally connected in an invagination groove, two lower extension rods are symmetrically arranged at two sides of the transmission shaft, an output shaft of the first motor penetrates through the fixed column and is coaxially connected with the transmission shaft, the bottom end of the transmission shaft is rotationally connected with the bottom wall of the invagination groove, an outer collar is coaxially sleeved on the outer wall of the transmission shaft, one ends, close to each other, of the two lower extension rods are welded with the outer wall of the outer collar, one ends, far away from each other, of the two lower extension rods are connected with a finish-polishing facility, all the finish-polishing facilities are driven to operate by the operation of one first motor, the adjustment of the positions of a plurality of groups (at least two groups, and the group number is even) of the finish-polishing facilities is realized, each group of the finish-polishing facilities can independently perform finish-polishing work without mutual influence, the finish-polishing efficiency is improved, only one motor is used, the arrangement of electric power facilities is reduced, and the use of electric power is reduced; multiple groups of fine polishing facilities under the work of one motor can perform fine polishing on multiple same metal parts respectively (the fine polishing process of each metal part is consistent), so that the probability that the precision of the metal parts after the fine polishing is greatly different is reduced, and the quality control is better facilitated to be mastered;

2. the invention provides free-form surface finish polishing equipment for automobile metal parts, wherein a connecting part is arranged outside a positioning ring, a fixed seat is welded on the connecting part, one end of the fixed seat is provided with a vertical pasting plate, a single-thread screw rod is rotatably connected in an inner cavity of the fixed seat, a rotatable adjusting shifting block is arranged on the top wall of the fixed seat, the single-thread screw rod penetrates through the fixed seat and is coaxially connected with the adjusting shifting block, one end of the vertical pasting plate extends into the inner cavity of the fixed seat and is in threaded sleeve joint with the single-thread screw rod, one end of the vertical pasting plate extending into the inner cavity of the fixed seat is in fit with the inner wall of the fixed seat, a double-thread screw rod is rotatably connected in the inner cavity of the vertical pasting plate, a third motor is welded on the top wall of the vertical pasting plate, an output shaft of the third motor penetrates through the vertical pasting plate and is coaxially connected with the double-thread screw rod, clamping pasting plates which ascend and descend along the inner wall of the vertical pasting plate are in threaded sleeve joint at the upper end and lower end of the double-thread screw rod, the opposite directions, the two clamping flitch plates are just arranged at two opposite ends of the double-threaded screw rod, when a third motor on the clamping facility works, the double-threaded screw rod is driven to run, so that the upper clamping flitch plate and the lower clamping flitch plate are close to each other or far away from each other at the same time, the positioning device is suitable for positioning metal parts with different sizes, and the metal parts positioned by the two clamping flitch plates are always as high as a finish polishing block; the heights of the two clamping flitch plates can be adjusted according to the polishing positions of different metal parts, so that the equipment is suitable for processing various automobile metal parts, and the product practicability is improved;

3. according to the automobile metal part free-form surface fine polishing equipment provided by the invention, two discharge ports communicated with the inner cavity of a support table are formed in the bottom surface of the support table, two groups of guide assemblies are stacked on two sides of the inner cavity of the support table and matched with a material pushing plate in shape, each guide assembly comprises two guide seats symmetrically arranged on two sides of each discharge port, the two guide seats are stacked on the bottom wall of the inner cavity of the support table, debris is discharged from the discharge ports through the two groups of guide assemblies, and a worker can use a tool to clean the debris, which does not fall on a collecting ring, on the support table onto the collecting ring and discharge the debris together, so that the workload of the worker is greatly reduced.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1 at C in accordance with the present invention;

FIG. 5 is a vertical cross-sectional view of the clamping arrangement of the present invention;

fig. 6 is a vertical cross-sectional view of the chip evacuation facility of the present invention;

FIG. 7 is a schematic structural view of a stripper plate of the present invention;

fig. 8 is a schematic structural diagram of another preferred embodiment of the present invention.

In the figure: 100. a support table; 101. a beam bearing body; 102. a positioning ring; 103. corner piles; 200. a drive mechanism; 201. fixing a column; 202. a first motor; 203. an invagination groove; 204. a drive shaft; 205. an outer collar; 206. a lower extension bar; 300. fine polishing facilities; 301. a supporting seat; 302. a second motor; 303. finely polishing the block; 400. a clamping facility; 401. a joining section; 402. a fixed seat; 403. adjusting the shifting block; 404. a single-thread lead screw; 405. erecting a pasting board; 406. a third motor; 407. a double-thread screw; 408. clamping the flitch; 500. a chip removal facility; 501. a collection ring; 502. a first hydraulic lever; 503. a second hydraulic rod; 504. a material pushing plate; 505. a material guide seat; 506. and (4) a discharge port.

Detailed Description

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

Referring to fig. 1-3 and 6, the device for finish polishing a free-form surface of a metal part of an automobile includes a supporting platform 100, a driving mechanism 200, a finish polishing facility 300 and a clamping facility 400, which are disposed above the supporting platform 100, and a chip removal facility 500 for automatically cleaning chips is disposed in the supporting platform 100;

as shown in fig. 1, in order to support the driving mechanism 200, two L-shaped bolster bodies 101 connected to two sides of the outer wall of the fixed column 201 are symmetrically connected to two sides of the top wall of the supporting table 100, two ends of the bolster body 101 are respectively welded to the supporting table 100 and the fixed column 201, and the two mutually symmetrical bolster bodies 101 support the fixed column 201 together; in order to support the clamping device 400, a suspended positioning ring 102 is further disposed above the supporting platform 100, and four corners of a bottom wall of the positioning ring 102 are fixedly connected to a top wall of the supporting platform 100 through an angle stake 103, and the connection mode is preferably welded.

A columnar fixing column 201 is fixedly welded at the center of the top surface of the supporting table 100, wherein the driving mechanism 200 is installed on the fixing column 201 and realizes synchronous rotation of the two groups of fine polishing facilities 300 through the fixing column 201, an invagination groove 203 is formed towards the inside of the outer wall of the fixing column 201, and the fixing column 201 is divided into an upper part and a lower part by the invagination groove 203.

Example one

In order to further disclose the structure of the driving mechanism 200, as shown in fig. 1-2, the driving mechanism 200 includes a first motor 202 welded to the top wall of a fixed column 201, a transmission shaft 204 with one end extending into an invagination groove 203, and two lower extension rods 206 symmetrically arranged at both sides of the transmission shaft 204, the other end of the transmission shaft 204 is arranged in the portion of the fixed column 201 between the first motor 202 and the invagination groove 203, the output shaft of the first motor 202 passes through the fixed column 201 and is coaxially connected with the transmission shaft 204, the bottom end of the transmission shaft 204 is rotatably connected with the bottom wall of the invagination groove 203, an outer collar 205 is coaxially sleeved on the outer wall of one end of the transmission shaft 204 located in the invagination groove 203, the ends of the two lower extension rods 206 close to each other are both welded with the outer wall of the outer collar 205, and the two lower extension rods 206 are also integrally connected on the outer wall of the outer collar 205;

as shown in fig. 1, the lower extension rod 206 is a three-section structure, the section connected with the outer collar 205 and the section connected with the support seat 301 are kept horizontal, and the section between the two sections is arranged obliquely, wherein the height of the end of the lower extension rod 206 connected with the outer collar 205 is greater than that of the end of the lower extension rod 206 connected with the support seat 301.

The greatest improvement of the fine polishing equipment is as follows: the matching work of a plurality of groups of fine polishing facilities 300 and a plurality of groups of clamping facilities 400 can be realized by only using one motor, namely the first motor 202, so that a plurality of metal parts can be subjected to curved surface fine polishing at the same time, and all fine polishing processes are consistent due to the fact that only one motor is used, and the consistency of the precision of the metal parts is ensured; wherein, the fine polishing facilities 300 and the clamping facilities 400 are symmetrically provided with two groups at two sides of the driving mechanism 200, one group of fine polishing facilities 300 and one group of clamping facilities 400 work cooperatively, the clamping facilities 400 are used for positioning metal parts, the fine polishing facilities 300 realize fine polishing and realize position movement under the driving of the driving mechanism 200, thereby realizing simultaneous fine polishing of two groups of metal parts.

Example two

In order to realize the curved surface finish polishing, the invention discloses a finish polishing facility 300, as shown in fig. 3, the finish polishing facility 300 comprises a support base 301 symmetrically installed at one end of the lower extension rod 206 far away from the transmission shaft 204 and a finish polishing assembly arranged on the support base 301, the finish polishing assembly comprises a second motor 302 welded on the top wall of one end of the support base 301 far away from the lower extension rod 206 and a finish polishing block 303 rotatably connected in the support base 301, wherein the support base 301 is duck-tongue-shaped to surround and position the finish polishing block 303, so that the finish polishing block 303 can be axially and stably rotated in the support base 301, and an output shaft of the second motor 302 passes through the support base 301 and is coaxially connected with the finish polishing block 303.

EXAMPLE III

In order to clamp metal components with different sizes and enable the parts to be subjected to fine polishing of the metal components with different sizes to be always as high as the fine polishing block 303, as shown in fig. 4-5, the clamping device 400 comprises a connecting part 401 fixedly sleeved outside the positioning ring 102, a fixed seat 402 fixedly welded to one end of the connecting part 401 close to the fixed column 201, and a vertical attachment plate 405 arranged at one end of the fixed seat 402 close to the fixed column 201;

in order to further disclose the structure on the fixed seat 402, a single-thread screw 404 is rotatably connected in the inner cavity of the fixed seat 402, a rotatable adjusting shifting block 403 is installed on the top wall of the fixed seat 402, the single-thread screw 404 penetrates through the fixed seat 402 and is coaxially connected with the adjusting shifting block 403, under a general condition, the adjusting shifting block 403 and the single-thread screw 404 are kept immovable, the single-thread screw 404 is adjusted only when the fine polishing requirement cannot be met in the clamping range of two clamping pasting plates 408, one end of a vertical pasting plate 405 extends into the inner cavity of the fixed seat 402 and is sleeved on the single-thread screw 404 in a threaded manner, and one end of the vertical pasting plate 405 extending into the inner cavity of the fixed seat 402 is attached to the inner wall of the fixed seat 402, so that the vertical pasting plate 405 can only lift along the inner wall of the fixed seat 402;

in order to further disclose the structure on the vertical flitch 405, the rotation is connected with double-thread lead screw 407 in the vertical flitch 405 inner chamber, it has third motor 406 to weld in vertical flitch 405 top wall, the output shaft of third motor 406 passes vertical flitch 405 and with double-thread lead screw 407 coaxial coupling, the equal screw thread in upper and lower both ends of double-thread lead screw 407 has cup jointed along the centre gripping flitch 408 that the inner wall of vertical flitch 405 goes up and down, the screw thread orientation at double-thread lead screw 407 both ends is opposite, and two centre gripping flitches 408 just set up in the opposite both ends of double-thread lead screw 407 screw thread orientation, make two centre gripping flitches 408 can only move in opposite directions or back on the back.

Example four

In order to automatically discharge the debris generated during the finish polishing, as shown in fig. 6-7, the debris discharging facility 500 includes a collecting ring 501 which is arranged in the inner cavity of the supporting platform 100 in a lifting manner and is embedded in the top wall of the supporting platform 100, a first hydraulic rod 502 which is fixedly connected to two sides of the bottom surface of the collecting ring 501, two second hydraulic rods 503 which are symmetrically arranged at two sides of the inner cavity of the supporting platform 100, and two pushing plates 504 which are arranged at the telescopic ends of the two second hydraulic rods 503, wherein the two pushing plates 504 are C-shaped plates with thinner thickness, and the two pushing plates 504 are matched with each other, so that all the debris on the annular collecting ring 501 can be pushed down;

in order to discharge the debris from the supporting table 100 to the outside, two discharge holes 506 communicating with the inner cavity of the supporting table 100 are formed in the bottom surface of the supporting table 100, two sets of guiding assemblies are stacked on both sides of the inner cavity of the supporting table 100, the guiding assemblies are matched with the pushing plate 504 in shape so as to better receive the falling debris, each guiding assembly comprises two guiding seats 505 symmetrically arranged on both sides of the discharge hole 506, and the two guiding seats 505 are stacked on the bottom wall of the inner cavity of the supporting table 100 and used for conveying the falling debris on the collecting ring 501 to the discharge hole 506.

EXAMPLE five

As another preferred embodiment of the present invention, the number of the groups of the fine polishing means 300 and the holding means 400 is set to be more, and at the same time, the number of the groups of the lower extension bars 206 connected to the fine polishing means 300 is changed, for example, fig. 8 discloses four lower extension bars 206, four groups of the fine polishing means 300 and four holding means 400, but in the actual design, the number of the groups can be designed to be six groups, eight groups, etc., but it should be noted that, no matter how many groups are designed, all the lower extension bars 206 are distributed along the vertical central line of the fixed column 201 in a circumferential array, so that the fine polishing of more metal parts can be simultaneously performed by one motor (the first motor 202), thereby increasing the production efficiency and ensuring the fine polishing precision of a plurality of metal parts.

The working principle, this car metal parts free form surface finish polishing equipment, when using, (the quantity of following extension rod 206, finish polishing facility 300 and centre gripping facility 400 is two sets of examples) will wait that the metal parts of finish polishing are fixed in respectively on two sets of centre gripping facilities 400, and the fixed mode is: placing the metal part between two clamping attachment plates 408, enabling one surface to be finely polished to be close to the fine polishing facility 300, enabling a third motor 406 to work to drive a double-threaded screw 407 to operate, driving the two clamping attachment plates 408 to move in opposite directions, enabling the two clamping attachment plates 408 to respectively clamp the upper end and the lower end of the metal part, and if the position to be finely polished of the metal part is special, for example, the position is located at the topmost end or the bottommost end of the metal part, screwing an adjusting shifting block 403 to drive a single-threaded screw 404 to operate, and enabling the vertical attachment plate 405 (and all structures thereon) to integrally move upwards or downwards, so that clamping requirements of different metal parts are met;

the two second motors 302 are driven to work to drive the two fine polishing blocks 303 to run highly, then the first motor 202 is driven to work to drive the transmission shaft 204, the outer collar 205 and the two lower extension rods 206 to run slowly, the two fine polishing blocks 303 are driven to bypass from one end to the other end of two metal parts to be finely polished, in the process of bypassing, the highly running fine polishing blocks 303 are in contact with the metal parts, namely, the fine polishing is completed, and the motion track of the fine polishing blocks 303 is an arc line, so that the fine polishing of the metal parts is a curved surface (the positions of the metal parts to be finely polished are adjusted in the two clamping attachment plates 408, curved surfaces with different curvatures can be realized, and free curved surfaces can be obtained), and the running angle of the fine polishing facility 300 is not more than 30 degrees generally (when the fine polishing facility is actually designed, the shape of the fine polishing blocks 303 can be changed);

most metal debris generated during fine polishing falls on the collecting ring 501, part of the metal debris does not fall on the collecting ring 501, and can be cleaned to the collecting ring 501 by workers, then the two first hydraulic rods 502 are contracted to drive the collecting ring 501 to enter the inner cavity of the supporting table 100, when the height of the top surface of the collecting ring 501 is kept level with the height of the bottom surfaces of the two pushing plates 504, the two first hydraulic rods 502 stop contracting, the two second hydraulic rods 503 are extended to drive the two C-shaped pushing plates 504 to approach each other, the debris on the collecting ring 501 is pushed down, falls in the two groups of guide assemblies, slides down along the material guide seats 505 in the guide assemblies and is discharged from the material outlet 506.

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

Claims (6)

1. The utility model provides an automobile metal parts free-form surface finish polishing equipment, includes brace table (100) and sets up in actuating mechanism (200), finish polishing facility (300) and the centre gripping facility (400) of brace table (100) top, still be equipped with automatic clastic chip removal facility (500) of clearance in brace table (100), its characterized in that:

two groups of fine polishing facilities (300) and two groups of clamping facilities (400) are symmetrically arranged on two sides of the driving mechanism (200), and one group of fine polishing facilities (300) and one group of clamping facilities (400) work together;

a columnar fixing column (201) is fixedly welded at the center of the top surface of the supporting platform (100), and the driving mechanism (200) is installed on the fixing column (201);

the driving mechanism (200) comprises a first motor (202) welded on the top wall of the fixed column (201), a transmission shaft (204) with one end extending into the invagination groove (203), and two lower extension rods (206) symmetrical to two sides of the transmission shaft (204);

the fine polishing facility (300) comprises a supporting seat (301) symmetrically arranged at one end, far away from the transmission shaft (204), of the lower extension rod (206) and a fine polishing assembly arranged on the supporting seat (301), wherein the fine polishing assembly comprises a second motor (302) welded to the top wall of one end, far away from the lower extension rod (206), of the supporting seat (301) and a fine polishing block (303) rotatably connected into the supporting seat (301);

the clamping facility (400) comprises a connecting part (401) fixedly sleeved outside the positioning ring (102), a fixed seat (402) fixedly welded at one end, close to the fixed column (201), of the connecting part (401), and a vertical pasting plate (405) arranged at one end, close to the fixed column (201), of the fixed seat (402);

a single-thread screw rod (404) is rotatably connected in the inner cavity of the fixed seat (402), a rotatable adjusting shifting block (403) is arranged on the top wall of the fixed seat (402), the single-thread screw (404) passes through the fixed seat (402) and is coaxially connected with the adjusting shifting block (403), one end of the vertical pasting plate (405) extends into the inner cavity of the fixed seat (402) and is sleeved on the single-thread screw rod (404) in a threaded manner, a double-thread screw (407) is rotatably connected in the inner cavity of the vertical pasting plate (405), a third motor (406) is welded on the top wall of the vertical pasting plate (405), the output shaft of the third motor (406) is coaxially connected with a double-thread screw (407), the upper end and the lower end of the double-thread screw (407) are respectively sleeved with a clamping flitch (408) which can lift along the inner wall of the vertical flitch (405) in a threaded manner, the thread directions of the two ends of the double-thread screw (407) are opposite, the two clamping flitch plates (408) are just arranged at two opposite ends of the double-thread screw rod (407) in the direction of the threads;

chip removal facility (500) including go up and down to set up in brace table (100) inner chamber and inlay in the collecting ring (501) of brace table (100) roof, fixed connection in first hydraulic stem (502) of collecting ring (501) bottom surface both sides, two symmetries install in second hydraulic stem (503) of brace table (100) inner chamber both sides and install in scraping wings (504) of two second hydraulic stem (503) flexible ends, brace table (100) bottom surface is seted up two rather than communicating discharge gate (506) of inner chamber, brace table (100) inner chamber both sides are all piled up and are built two sets of direction subassembly, the direction subassembly includes that two symmetries set up in guide seat (505) of discharge gate (506) both sides.

2. The automobile metal part free-form surface finish polishing device according to claim 1, characterized in that: the other end of transmission shaft (204) sets up inside fixed column (201), the output shaft and the transmission shaft (204) coaxial coupling of first motor (202), the bottom of transmission shaft (204) is connected with the diapire rotation of undercut groove (203).

3. The automobile metal part free-form surface finish polishing device according to claim 2, characterized in that: the coaxial cover on the outer wall that transmission shaft (204) were located the one end in undercut groove (203) is equipped with outer lantern ring (205), two the one end that lower extension pole (206) are close to each other all with outer lantern ring (205) outer wall welding, and two lower extension poles (206) themselves meet as an organic wholely on outer lantern ring (205) outer wall.

4. The automobile metal part free-form surface finish polishing device according to claim 3, characterized in that: the lower extension rod (206) is of a three-section structure, the section connected with the outer sleeve ring (205) and the section connected with the support seat (301) are kept horizontal, and the section between the two sections is obliquely arranged.

5. The automobile metal part free-form surface finish polishing device according to claim 1, characterized in that: the supporting seat (301) is in a shape of a duck tongue and surrounds and positions the fine polishing block (303), and an output shaft of the second motor (302) is coaxially connected with the fine polishing block (303).

6. The apparatus for finish polishing of a free-form surface of an automotive metal part according to any one of claims 1 to 5, characterized in that: two bearing beam bodies (101) connected to the outer wall of the fixing column (201) are symmetrically connected to the two sides of the top wall of the supporting table (100), and a suspended positioning ring (102) is further arranged above the supporting table (100).

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