CN216731708U

CN216731708U - Clamping device for machining cylindrical parts

Info

Publication number: CN216731708U
Application number: CN202120516955.8U
Authority: CN
Inventors: 金永乔; 王猛; 王桃章; 杨长祺; 李中权; 徐恒存
Original assignee: Shanghai Hanghe Intelligent Technology Co ltd
Current assignee: Shanghai Hanghe Intelligent Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2022-06-14
Anticipated expiration: 2031-03-11

Abstract

The utility model provides a clamping device for processing cylindrical parts, which comprises a frame, a rotary worktable, a chuck, a leveling mechanism and a clamping mechanism, wherein the rotary worktable is rotatably erected on the frame; chuck fixed mounting is on rotary table, be provided with movable jack catch on the chuck, movable jack catch is provided with a plurality ofly around the central axis interval of chuck on the chuck, leveling mechanism all installs a set ofly on arbitrary movable jack catch, fixture is provided with a plurality ofly around the central axis interval of chuck on the chuck, just fixture and movable jack catch are the interval setting. The levelness of the end face of the part and the verticality of the axis are adjusted through the leveling component, the clamping coaxiality of the cylindrical part is corrected by utilizing the rotary workbench and the chuck, the applicability of the clamping device is improved, the operation is simple, and the stability and the supporting strength of the clamping device for supporting the wall of the part are improved.

Description

Clamping device for machining cylindrical parts

Technical Field

The utility model relates to a machining technology field specifically relates to a clamping device for processing of drum type parts.

Background

With the scientific progress and the technical development, the thin-wall cylindrical part is used more frequently, the thin-wall cylindrical part can contain various structures such as a cylindrical surface body, a conical surface body, a crescent inclined hole, a fan-shaped frame and the like, and the outer wall is distributed with a plurality of hole systems, key grooves and the like, so that the structure is complex.

At present, the parts are manufactured by adopting a manufacturing mode of casting and machining, and the weak rigidity of the parts during machining causes the clamping difficulty of the parts, extremely poor cutting stability and easy machining deformation. Meanwhile, most of the thin-wall cylindrical parts belong to various small batches, and the tool needs to be suitable for clamping of the thin-wall cylindrical parts with different sizes.

The prior Chinese patent with publication number CN207447750U discloses a welding fixture for processing thin-wall cylinder parts, which comprises a support, a clamping structure, a movable core shaft and a gasket; mounting the movable core shaft on a fixed core shaft of a support; placing the liner into the groove of the movable core shaft, lapping and rolling the thin-wall cylinder which is initially rolled to be formed and is not spliced on the movable core shaft, sleeving a clamping structure outside the thin-wall cylinder, clamping the thin-wall cylinder between the movable core shaft and the clamping structure, and connecting and disposing the opening of the rolled thin-wall cylinder at the position of the ceramic liner; the fastening means on the gripping structure is tightened.

The inventor thinks that the operation of fixing the thin-wall cylindrical part in the prior art is complicated, the support to the wall of the part is weak, and a part to be improved exists.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a clamping device for processing of drum type parts.

According to the utility model provides a clamping device for processing cylindrical parts, which comprises a frame, a rotary worktable, a chuck, a leveling mechanism and a clamping mechanism, wherein the rotary worktable is rotatably erected on the frame; chuck fixed mounting is on rotary worktable, be provided with movable jack catch on the chuck, movable jack catch is provided with a plurality ofly around the central axis interval of chuck on the chuck, leveling mechanism all installs a set ofly on arbitrary movable jack catch, fixture is provided with a plurality ofly around the central axis interval of chuck on the chuck, just fixture and movable jack catch are the interval setting.

Preferably, the leveling mechanism comprises a supporting block, a stud, an adjusting nut and a first locking nut, the supporting block is mounted on the movable jaw through the stud, and the adjusting nut and the first locking nut are both in threaded fit on the stud.

Preferably, fixture includes base, support post, activity screw rod and circumference locating component, base fixed mounting is on the chuck, the support post slides and sets up on the base, just the direction of sliding of support post is close to rather than the direction syntropy of keeping away from chuck central point and putting, support post and rather than screw-thread fit are worn to establish by activity screw rod level, circumference locating component goes up and down to set up on support post.

Preferably, circumference locating component includes locating pin, regulation handle and fixation nut, the last vertical spout of having seted up of support post, the locating pin is worn to establish the spout and is slided the cooperation rather than, adjust the handle and install the one end of keeping away from chuck central point at the locating pin, fixation nut screw-thread fit is on adjusting handle, just fixation nut supports tight cooperation with the support post.

Preferably, the movable screw rod comprises a clamping part and a clamping handle, the clamping part is positioned at one end of the movable screw rod close to the central position of the chuck, and the clamping handle is positioned at one end of the movable screw rod far away from the central position of the chuck.

Preferably, the clamping portion is semi-spherical.

Preferably, the base is provided with a T-shaped slide way, the length direction of the T-shaped slide way and the direction in which the support column is close to or far away from the center of the chuck are in the same direction, the bottom of the support column is embedded in the T-shaped slide way and is in sliding fit with the T-shaped slide way, the support column is provided with a second locking nut, the second locking nut penetrates through the support column and is in threaded fit with the support column, and the threaded end part of the second locking nut, which penetrates out of the support column, is in abutting fit with the base.

Preferably, the movable clamping jaw is provided with a nylon special-shaped block for clamping a part.

Preferably, still be provided with in the frame and play the table seat, play the table seat and include telescopic link and cantilever beam, the telescopic link is vertical setting, cantilever beam normal running fit is on the top of telescopic link.

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

1. the utility model adjusts the levelness of the end surface of the part and the verticality of the axis through the leveling component, corrects the coaxiality of clamping the cylindrical part by utilizing the rotary worktable and the chuck, is favorable for improving the applicability of the clamping device, is simple to operate, and is favorable for improving the stability and the supporting strength of the clamping device for supporting the wall of the part;

2. the utility model clamps the cylindrical parts through the matching of the movable clamping claws and the clamping mechanism, thereby enabling the clamping device to clamp the cylindrical parts with different diameters and different heights, further being beneficial to improving the applicability of the clamping device and reducing the production cost;

3. the utility model discloses a lower part of activity jack catch centre gripping cylinder part, the upper portion of the clamping part centre gripping cylinder part of activity screw rod to help improving the stability and the reliability of clamping device centre gripping cylinder part, and then help improving the machining precision of part.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

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

FIG. 2 is a schematic view of the overall structure of a clamping part of the clamping device according to the present invention;

fig. 3 is a schematic view of the overall structure of the leveling mechanism, which mainly embodies the present invention;

fig. 4 is a schematic view of the overall structure of the movable screw rod of the present invention.

Reference numerals: 1. a frame; 2. a rotary table; 3. a chuck; 31. a movable jaw; 4. a leveling mechanism; 41. a support block; 42. a stud; 43. adjusting the nut; 44. a first lock nut; 5. a clamping mechanism; 51. a base; 511. a T-shaped slideway; 52. supporting the upright post; 521. a second lock nut; 522. a chute; 53. a movable screw; 531. a clamping portion; 532. a grip handle; 6. a nylon shaped block; 7. a circumferential positioning assembly; 71. positioning pins; 72. adjusting the handle; 73. Fixing a nut; 8. a meter base is printed; 81. a telescopic rod; 82. a cantilever beam.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1, according to the utility model provides a clamping device for processing of cylinder type parts, including frame 1, rotary table 2, chuck 3, levelling mechanism 4 and fixture 5. Frame 1 erects subaerial, and rotary table 2 horizontal rotating turret establishes in frame 1, and the coaxial fixed mounting of chuck 3 deviates from one side of frame 1 at rotary table 2, and chuck 3 deviates from one side of rotary table 2 and installs a plurality of movable jack catchs 31. A group of leveling mechanisms 4 are arranged on any movable clamping jaw 31, and a group of clamping mechanisms 5 are arranged between any two adjacent movable clamping jaws 31 on the chuck 3.

As shown in fig. 1 and 2, the rotary table 2 and the chuck 3 are both disc-shaped, the chuck 3 is a self-centering three-jaw chuck, the chuck 3 is coaxially positioned with the rotary table 2 through the center of the rotary table, and the chuck 3 is coaxially and fixedly connected with the rotary table 2 through a bolt. The movable clamping jaws 31 are arranged on one side, departing from the rotary working table 2, of the chuck 3 at equal intervals around the central axis of the chuck 3, any movable clamping jaw 31 is in sliding fit with the chuck 3, and the sliding direction of any movable clamping jaw 31 is parallel to the direction of the center of the chuck 3 close to or far away from the movable clamping jaw. All install nylon dysmorphism piece 6 through the bolt on the three movable jaw 31, when the jaw centre gripping part, nylon dysmorphism piece 6 contacts with the surface of part to reduce the damage that the part surface produced because of the centre gripping.

As shown in fig. 1 and 3, since the structure, the installation manner and the connection relationship with the movable claws 31 of any one of the leveling mechanisms 4 are the same, a set of leveling mechanisms 4 will be explained as an example. The leveling mechanism 4 comprises a supporting block 41, a stud 42, an adjusting nut 43 and a first locking nut 44, the supporting block 41 is installed on the side wall of the movable jaw 31 departing from the chuck 3, the stud 42 is located on the side edge of the movable jaw 31 and sequentially penetrates through the supporting block 41 and the movable jaw 31, the stud 42 is in threaded fit with the movable jaw 31, and the stud 42 is in sliding fit with the supporting block 41. The adjusting nut 43 and the first locking nut 44 are sleeved on the stud 42, the adjusting nut 43 is located below the supporting block 41, the first locking nut 44 is located above the supporting block 41, and the adjusting nut 43 and the first locking nut 44 are both abutted against the supporting block 41.

The first locking nut 44 is unscrewed, the height of the supporting block 41 is adjusted through the adjusting nut 43, the end surface levelness and the axis verticality of the cylindrical part are further met, and finally the first locking nut 44 is screwed.

As shown in fig. 1, a group of clamping mechanisms 5 is mounted in the middle of any two movable jaws 31 which are adjacently arranged on the chuck 3, and the three groups of clamping mechanisms 5 are located on one side of the chuck 3 departing from the rotary table 2. Since the structure, installation manner and connection relationship of any one of the clamping mechanisms 5 and the chuck 3 are the same, a group of clamping mechanisms 5 will be described as an example.

As shown in fig. 1 and 4, the clamping mechanism 5 includes a base 51, a support column 52, a movable screw 53 and a circumferential positioning component 7, the base 51 is fixed on one side of the chuck 3 departing from the rotary table 2 through bolts, and the base 51 is located in the middle of any adjacent movable jaws 31. The side wall of the base 51, which faces away from the chuck 3, is provided with T-shaped slideways 511, the T-shaped slideways 511 extend from the outer edge position of the base 51 to the center position of the chuck 3, and two T-shaped slideways 511 are arranged on the base 51 at intervals. The supporting upright 52 is vertically installed on the base 51, and the bottom of the supporting upright 52 is embedded in the two T-shaped slideways and is respectively matched with the two T-shaped slideways 511 in a sliding manner. The support column 52 is guided by the two T-shaped slideways 511 to make reciprocating sliding movement on the base 51 towards or away from the center of the chuck 3.

Further, a second locking nut 521 is mounted on the support column 52, the second locking nut 521 penetrates through the bottom of the support column 52 and is in threaded fit with the bottom of the support column 52, the end portion of the second locking nut 521, which penetrates through the support column 52, abuts against the base 51, and four second locking nuts 521 are symmetrically mounted at the bottom of the support column 52.

As shown in fig. 1 and 4, the movable screws 53 horizontally penetrate the top end of the support column 52 and are in threaded engagement with the top end of the support column 52, the length direction of the movable screws 53 is the same as the moving direction of the support column 52, and three movable screws 53 are mounted at the top end of the support column 52 at equal intervals. Any movable screw 53 comprises a clamping part 531 and a clamping handle 532, the clamping part 531 is located at one end of the movable screw 53 close to the central position of the chuck 3, the clamping handle 532 is located at one end of the movable screw 53 far away from the central position of the chuck 3, and any clamping part 531 is semicircular. The worker rotates the movable screw 53 by screwing the grip lever 532 for fine adjustment to clamp the part.

The supporting column 52 is also vertically provided with a sliding chute 522, and the length of the sliding chute 522 is perpendicular to the length of the T-shaped slideway 511. The circumferential positioning assembly 7 comprises a positioning pin 71, an adjusting handle 72 and a fixing nut 73, the positioning pin 71 penetrates through the sliding groove 522 and slides along the length direction of the sliding groove 522, and the adjusting handle 72 is installed at one end of the positioning pin 71, which is far away from the central position of the chuck 3. The fixing nut 73 is screwed on the adjusting handle 72, and the fixing nut 73 is in abutting fit with the support column 52. Through the fixing nut 73 and the adjusting handle 72, the positioning pin 71 is inserted into the positioning hole in the part, so that the part is circumferentially positioned, and the stability of clamping the part by the clamping device is improved.

As shown in fig. 1 and 2, a meter-striking base 8 is further mounted on the rack 1 through a bolt, the meter-striking base 8 is vertical to the rack 1, and the meter-striking base 8 includes an expansion link 81 and a cantilever 82. The telescopic rod 81 is composed of two sections of steel clips, the steel clips positioned on the upper side can slide in the steel clips positioned on the lower side along the vertical direction, and the relative positions of the two steel clips are fixed through bolts mounted on the steel clips positioned on the lower side. The cantilever beam 82 is rotatably installed at the upper end of the telescopic rod 81 through a rotation shaft, and the cantilever beam 82 rotates around the telescopic direction that can be around the telescopic rod 81.

During work, a worker can install the dial indicator or the dial indicator on the telescopic rod 81, and then the dial indicator or the dial indicator is matched with the leveling assembly to help the worker to find a reference for the part, so that the tolerance of the part is within the machining tolerance of the part, and the machining precision of the part is improved.

The clamping method for processing the cylindrical part, provided by the invention, comprises the following steps:

s1, firstly, placing the cylindrical part on the inner sides of the nylon special-shaped blocks 6 on the three movable jaws 31, and then screwing the chuck 3 to ensure that the three movable jaws 31 contract until the distance between the nylon special-shaped blocks 6 and the outer surface of the part is between 1mm and 5 mm;

s2, loosening the second locking nut 521, moving the support column 52 to enable the distance between the support column 52 and the outer surface of the part to be about 40mm, and then screwing the second locking nut 521;

s3, loosening the fixing nut 73, adjusting the height of the circumferential positioning component 7, rotating the rotary table 2, synchronously screwing the adjusting handle 72, inserting the positioning pin 71 into the positioning hole on the peripheral side of the part, and screwing the fixing nut 73;

s4, tightening the chuck 3 again to enable the three movable jaws 31 to contract until the nylon special-shaped block 6 and the outer surface of the part are in a pre-contact state, then installing a dial indicator or a dial indicator on the indicator base 8, then adjusting the leveling assembly, and ensuring that the excircle runout tolerance of the part is within the machining tolerance;

s5, cross, symmetrical, gradual, and uniform tightening of the clamping handle 532 and the clamping portion 531 against the outer sidewall of the part.

Principle of operation

During work, a worker firstly places cylindrical parts on the inner sides of the nylon special-shaped blocks 6 on the three movable jaws 31, then tightens the chuck 3 to contract the movable jaws 31, then loosens the second locking nut 521, moves the supporting upright column 52, and then tightens the second locking nut 521; then, loosening the fixing nut 73, adjusting the height of the positioning pin 71, then rotating the workbench, screwing the adjusting handle 72 to insert the positioning pin 71 into the positioning hole on the peripheral side of the part, and then screwing the fixing nut 73; then the chuck 3 is screwed down again to enable the movable clamping jaws 31 and the part to be in a contact state, the leveling component is adjusted by means of a dial indicator or a dial indicator arranged on the dial gauge seat 8 to ensure that the excircle runout tolerance of the part is within the machining tolerance, and finally the clamping handles 532 are screwed down alternately, symmetrically, gradually and uniformly to enable the clamping parts 531 to be abutted against the outer side wall of the part. The movable clamping jaw 31, the positioning pin 71 and the clamping part 531 are matched to clamp the cylindrical part, so that the clamping stability is improved, the operation is simple, and the positioning and clamping efficiency is high.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A clamping device for processing cylindrical parts is characterized by comprising a rack (1), a rotary worktable (2), a chuck (3), a leveling mechanism (4) and a clamping mechanism (5), wherein the rotary worktable (2) is rotatably erected on the rack (1);

chuck (3) fixed mounting is on rotary worktable (2), be provided with movable jack catch (31) on chuck (3), movable jack catch (31) are provided with a plurality ofly around the central axis interval of chuck (3) on chuck (3), a set of is all installed on arbitrary movable jack catch (31) leveling mechanism (4), fixture (5) are provided with a plurality ofly around the central axis interval of chuck (3) on chuck (3), just fixture (5) are the interval with movable jack catch (31) and set up.

2. The clamping device for machining cylindrical parts according to claim 1, wherein the leveling mechanism (4) comprises a support block (41), a stud (42), an adjusting nut (43) and a first locking nut (44), the support block (41) is mounted on the movable jaw (31) through the stud (42), and the adjusting nut (43) and the first locking nut (44) are in threaded fit with the stud (42).

3. The clamping device for machining the cylindrical part according to claim 1, wherein the clamping mechanism (5) comprises a base (51), a support column (52), a movable screw (53) and a circumferential positioning component (7), the base (51) is fixedly installed on the chuck (3), the support column (52) is arranged on the base (51) in a sliding mode, the sliding direction of the support column (52) is the same as the direction of the support column close to or far away from the center of the chuck (3), the movable screw (53) horizontally penetrates through the support column (52) and is in threaded fit with the support column, and the circumferential positioning component (7) is arranged on the support column (52) in a lifting mode.

4. The clamping device for machining the cylindrical part according to claim 3, wherein the circumferential positioning assembly (7) comprises a positioning pin (71), an adjusting handle (72) and a fixing nut (73), a sliding groove (522) is vertically formed in the supporting upright post (52), the positioning pin (71) penetrates through the sliding groove (522) and is in sliding fit with the sliding groove, the adjusting handle (72) is installed at one end, away from the central position of the chuck (3), of the positioning pin (71), the fixing nut (73) is in threaded fit with the adjusting handle (72), and the fixing nut (73) is in abutting fit with the supporting upright post (52).

5. The clamping device for machining the cylindrical part, as recited in claim 3, is characterized in that the movable screw (53) comprises a clamping portion (531) and a clamping handle (532), the clamping portion (531) is located at one end of the movable screw (53) close to the central position of the chuck (3), and the clamping handle (532) is located at one end of the movable screw (53) far away from the central position of the chuck (3).

6. The clamping device for machining the cylindrical part as claimed in claim 5, wherein the clamping portion (531) is semi-spherical.

7. The clamping device for machining the cylindrical part according to claim 3, wherein the base (51) is provided with a T-shaped slideway (511), the length direction of the T-shaped slideway (511) is the same as the direction of the support column (52) close to or far away from the center of the chuck (3), the bottom of the support column (52) is embedded in the T-shaped slideway (511) and is in sliding fit with the T-shaped slideway (511), the support column (52) is provided with a second locking nut (521), the second locking nut (521) penetrates through the support column (52) and is in threaded fit with the support column (52), and the threaded end part of the second locking nut (521), which penetrates through the support column (52), is in abutting fit with the base (51).

8. The clamping device for processing the cylindrical part according to claim 1, wherein the movable jaw (31) is provided with a nylon profile block (6) for clamping the part.

9. The clamping device for processing the cylindrical part according to claim 1, wherein the frame (1) is further provided with a meter striking base (8), the meter striking base (8) comprises an expansion link (81) and a cantilever beam (82), the expansion link (81) is vertically arranged, and the cantilever beam (82) is rotatably fitted at the top end of the expansion link (81).