CN218746397U

CN218746397U - Multi-workpiece milling tool clamp

Info

Publication number: CN218746397U
Application number: CN202223400979.0U
Authority: CN
Inventors: 郭二辉; 李俊超; 郁亚培; 罗演魁; 刘浩
Original assignee: Zhengzhou Chuangmingcheng Automation Equipment Technology Co ltd
Current assignee: Zhengzhou Chuangmingcheng Automation Equipment Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-03-28
Anticipated expiration: 2032-12-19

Abstract

The utility model belongs to the technical field of the processing tool, especially, relate to a multiplex spare mills frock clamp. A multi-workpiece milling tool clamp comprises a horizontally arranged bottom plate, wherein a supporting piece is vertically and fixedly connected to the bottom plate, and a supporting plate is horizontally arranged on the upper end surface of the supporting piece; the lower end face of the supporting plate is vertically provided with an air cylinder, a guide rod of the air cylinder penetrates through the supporting plate in a sliding mode and extends to the upper portion of the supporting plate, and a pressing claw is fixedly sleeved on the guide rod; the bearing plate is positioned on the supporting plate through a positioning component arranged on the supporting plate, the cylinder drives the pressing claw to fix the bearing plate on the supporting plate, a plurality of waist-shaped mounting grooves are formed in the upper end face of the bearing plate, and the arc-shaped inner walls at two ends of each mounting groove are matched with a workpiece; and a wedge block clamping component which can move towards the arc-shaped inner walls at the two ends of the mounting groove and is used for tightly pushing a workpiece is arranged in the middle of the mounting groove. The utility model discloses have many work pieces and can be in batches clamping work piece, can wholly material loading in order to reduce to change the work piece required long.

Description

Multi-workpiece milling tool clamp

Technical Field

The utility model belongs to the technical field of the processing tool, especially, relate to a multiplex spare mills frock clamp.

Background

In precision milling of a cylindrical workpiece 1 as shown in fig. 1, since the upper end of the workpiece 1 needs to be milled, grooved, and holed, the bottom of the workpiece 1 needs to be vertically positioned and fixed by a fixture. The existing cylindrical workpiece is generally clamped by a single piece, milled and disassembled by a milling machine tool, the auxiliary time for clamping the workpiece is long, only one workpiece can be clamped at a time, and the efficiency is low.

Especially in the precision machining industry, the number of Fanuc machines is large, and the Fanuc machines are suitable for milling large-batch workpieces, so that a multi-workpiece clamping tool for clamping cylindrical workpieces is needed. The existing multi-workpiece tool clamp is generally directly fixed on a milling surface of a machine table, a plurality of workpieces are clamped once and then milled in batches, all the workpieces are dismounted after milling is finished, then the workpieces are remounted, and the process is repeated in a circulating manner. Although the multi-workpiece tool can clamp workpieces in batches, the problem that the machine is stopped to wait for clamping the workpieces still exists, the whole clamping and whole machining effects cannot be achieved, and the machining efficiency needs to be further improved. In addition, because in order to further carry out the vertical centre gripping in batches in the work piece 1 to improve milling process's quantity, work piece 1's the arranging needs comparatively densely, and traditional centre gripping frock is great like the location of vice and fastening device volume, has restricted the promotion of work piece 1 clamping quantity, needs urgently to design stable and simple effective, small and exquisite fastening device.

The utility model provides a multiplex spare milling process anchor clamps, but batchization whole clamp dress, whole material loading, whole processing work piece start board, can stop again after accomplishing batch work piece processing, and can realize the whole material loading of another batch work piece, reduced the time of the clamping product of relapseing.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists among the prior art, this application provides one kind and has many work pieces and can be in batches the clamping work piece, can wholly material loading in order to reduce to change the work piece long and simple structure reliable many work piece milling frock clamp when needing.

In order to achieve the above object, the utility model provides a following technical scheme:

a multi-workpiece milling tool clamp comprises a horizontally arranged bottom plate, wherein a support piece is vertically and fixedly connected to the bottom plate, and a support plate is horizontally arranged on the upper end surface of the support piece; the lower end face of the supporting plate is vertically provided with an air cylinder, a guide rod of the air cylinder penetrates through the supporting plate in a sliding mode and extends to the upper portion of the supporting plate, and a pressing claw is fixedly sleeved on the guide rod; the bearing plate is positioned on the supporting plate through a positioning component arranged on the supporting plate, the cylinder drives the pressing claw to fix the bearing plate on the supporting plate, a plurality of waist-shaped mounting grooves are formed in the upper end face of the bearing plate, and the arc-shaped inner walls at two ends of each mounting groove are matched with a workpiece; and a wedge block clamping component which can move towards the arc-shaped inner walls at the two ends of the mounting groove and is used for tightly supporting the workpiece is arranged in the middle of the mounting groove.

Preferably, the wedge clamping assembly comprises a connecting block horizontally arranged at the bottom of the mounting groove, two moving blocks oppositely arranged on the connecting block, a wedge abutted against the end face opposite to the two moving blocks, and an adjusting bolt vertically slidably penetrating the wedge and connected to the connecting block through threads.

Preferably, the connecting block is of a U-shaped structure with an upward opening, and two side plates of the connecting block are respectively connected with one ends of the two moving blocks, which are close to the wedge block, in an integrally formed manner.

Preferably, a groove wall between the arc-shaped inner walls at the two ends of the mounting groove extends outwards to form a sliding groove, the moving block is abutted against the groove wall of the limiting groove, and a clamping groove matched with the workpiece is formed in the end face, opposite to the workpiece, of the moving block.

Preferably, the positioning assembly comprises a plurality of cushion blocks fixedly connected with the upper end face of the supporting plate, positioning columns vertically embedded in the upper end faces of the cushion blocks, positioning through holes matched with the positioning columns are formed in the bearing plate, and the bearing plate can be sleeved on the positioning columns.

Preferably, a plurality of loading plate unloading through grooves are formed in the loading plate close to the mounting groove.

Preferably, a plurality of supporting plate discharging through grooves are formed in the supporting plate below the supporting plate discharging through groove.

Preferably, the cylinder is a rotary clamping cylinder.

Preferably, the end surfaces of the two sides of the bearing plate are provided with taking and placing grooves.

Preferably, the bottom plate is provided with a waist-shaped connecting through hole, and a fastening bolt penetrates through the connecting through hole to fix the bottom plate on the milling worktable.

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

1. by arranging the bottom plate, the supporting piece and the supporting plate, the milling worktable is convenient to mount on a milling worktable, meanwhile, the bearing plate and a workpiece are supported, and an enough space is arranged below the supporting plate; by arranging the air cylinder and the pressing claw, the bearing plate can be quickly and conveniently fixed on the supporting plate to process a workpiece; the loading plate is positioned on the supporting plate through the positioning assembly, the loading plate is convenient to mount and fix, and meanwhile, the loading plate is convenient to dismount, the loading plate which is clamped with a batch of workpieces can be integrally fixed on the supporting plate, so that the loading time is saved, the workpieces are prevented from being clamped repeatedly, and the working efficiency is reduced; the waist-shaped mounting groove and the wedge block clamping assembly are arranged, so that the workpiece can be conveniently clamped, fixed and detached; the utility model discloses a be provided with a plurality of processing stations on the loading board and through two work pieces of a voussoir centre gripping subassembly centre gripping simultaneously, when providing whole machining efficiency, also improved clamping efficiency.

2. The wedge block clamping assembly and the bottom plate are of split structures, so that the processing difficulty and complexity of the bottom plate are reduced, and the wedge block clamping assembly can be conveniently adjusted when workpieces with different sizes are clamped; the connecting block and the moving block of the wedge block clamping assembly are designed into an integrated structure, so that the wedge block clamping assembly is convenient to mount and simple in structure; by arranging the sliding groove, the sliding guide effect of the moving block is realized, the moving block can be limited, and the workpiece is prevented from being clamped too tightly; through setting up the centre gripping groove, realize the stable centre gripping to the work piece outer circumference.

3. By arranging the cushion block, the loading plate discharging through hole and the supporting plate discharging through hole, the reduction of processing precision caused by excessive cuttings is avoided; the cylinder chooses the rotatory centre gripping cylinder for use, and the installation loading board that can be straight-up directly down avoids when the installation loading board, and the pressure claw is to blockking of loading board.

Drawings

Fig. 1 is a schematic structural diagram of a workpiece to be clamped and machined.

Fig. 2 is the structure schematic diagram of the utility model after clamping the workpiece.

FIG. 3 is a schematic structural view of the present invention after removing the bearing plate.

Fig. 4 is a schematic structural view of the loading plate and the wedge clamping assembly of the present invention when fixing a workpiece.

Fig. 5 is a schematic view of the mounting structure of the bearing plate and the wedge clamping assembly of the present invention.

Fig. 6 is a schematic structural view of the carrier plate of the present invention.

Fig. 7 is a schematic perspective view of the wedge clamping assembly of the present invention.

Fig. 8 is a front view schematic diagram of the wedge clamping assembly of the present invention.

Fig. 9 is an exploded view of each component of the wedge clamping assembly of the present invention.

In the figure: 11. fastening bolt, 12, bottom plate, 121, connecting through hole, 13, support piece, 14, support plate, 141, support plate unloading through groove, 21, cylinder, 22, pressing claw, 3, bearing plate, 31, mounting groove, 32, bearing plate unloading through groove, 33, positioning through hole, 34, sliding groove, 35, taking and placing groove, 41, connecting block, 42, moving block, 421, clamping groove, 43, wedge, 44, adjusting bolt, 51, cushion block, 52, positioning column, 6 and workpiece.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

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

Example (b):

referring to fig. 2 and 3, the multi-workpiece milling fixture comprises a supporting assembly, a longitudinal clamping assembly, a bearing plate 3, a wedge clamping assembly and a positioning assembly. The supporting assembly is fixed on the milling worktable surface and is used for supporting the longitudinal clamping assembly and the bearing plate 3; the longitudinal clamping assembly is used for clamping and fixing the bearing plate 3; the wedge clamping component is used for clamping and fixing the workpiece 6; the positioning assembly is used for positioning and mounting the bearing plate 3 on the supporting assembly.

The supporting component comprises a base plate 12 which is fixed on a milling working table surface (not shown in the figure) through a fastening bolt 11, waist-shaped connecting through holes 121 are formed in four corners of the base plate 12, the fastening bolt 11 penetrates through the connecting through holes 121, and the waist-shaped connecting through holes 121 are arranged, so that the installation position of the base plate 12 on the working table surface can be conveniently adjusted to adapt to the milling position of a milling machine head.

A support 13 is vertically fixed on the bottom plate 12 through bolts, and the support 13 can be four support rods or two equal-height blocks arranged in parallel. The upper end face of the supporting piece 13 is horizontally connected with a supporting plate 14 through a bolt, and the supporting function of the bearing plate 3 is realized through the arrangement of the supporting plate 14.

The vertical clamping assembly comprises a cylinder 21 and a pressing claw 22, four through holes are formed in corresponding positions of four corners of the supporting plate 14, the lower end face of the supporting plate 14 around the through holes is fixedly connected with the cylinder 21 through bolts in a vertical mode, a guide rod of the cylinder 21 penetrates through the through holes in a sliding mode and extends to the position above the supporting plate 14, and the pressing claw 22 is fixedly arranged on the upper portion of the guide rod of the cylinder 21 through bolts in a fixing sleeve mode. By providing the cylinder 21 and the pressing claw 22, when the bearing plate 3 is placed on the support plate 14, the guide rod of the cylinder 21 is retracted to cause the pressing claw 22 to press down and clamp the bearing plate 3, thereby achieving fixation of the bearing plate 3 in the longitudinal direction. This cylinder 21 can select the ordinary telescopic cylinder, and cylinder 21 guide arm drives pressure claw 22 up-and-down motion promptly, and this telescopic cylinder simple structure, but because pressure claw 22 need be towards loading board 3, so when placing loading board 3 in backup pad 14 straight from top to bottom, pressure claw 22 can have a barrier effect to loading board 3, from this, can only transversely get into behind pressure claw 22 below from one side of backup pad 14, places again in backup pad 14. In order to simplify the placing process and improve the efficiency of fixing the bearing plate 3, in this embodiment, the cylinder 21 can be a rotating clamping cylinder, that is, as shown in fig. 3, when the bearing plate 3 is not placed, the pressing claw 22 on the cylinder 21 is parallel to the length direction of the supporting plate 14, so as to facilitate placing the bearing plate 3 on the supporting plate 14, and then the cylinder 21 drives the pressing claw 22 to rotate 90 degrees to be above the bearing plate 3, and the cylinder 21 drives the pressing claw 22 to move down and press the bearing plate 3.

Referring to fig. 4, 5 and 6, a plurality of waist-shaped mounting grooves 31 with a certain depth are formed in the upper end surface of the bearing plate 3, each mounting groove 31 includes arc-shaped grooves with arc-shaped inner wall structures at two ends and plane grooves with plane inner wall structures parallel to each other between two arc-shaped portions, the inner walls of the arc-shaped grooves of the mounting grooves 31 are matched with the workpieces 6, that is, the inner diameters of the arc-shaped grooves are the same as or slightly larger than the outer diameter of the workpieces 6, and the outer circumferences of one sides of the workpieces 6 are positioned and primarily fixed through the arc-shaped grooves. A wedge holding member is provided in the planar groove of the mounting groove 31, and the wedge holding member is movable toward the inner walls of the arc-shaped grooves at both ends of the mounting groove 31 to fix and hold the outer circumference of the other side of the workpiece 6.

Offer a plurality of loading boards on the loading board 3 that is close to mounting groove 31 and unload logical groove 32, unload through setting up the loading board and lead to groove 32, avoid the smear metal that mills to pile up on loading board 3 to influence cutting accuracy and hinder going on of cutting even. For this reason, in order to make the cutting fall from the loading plate discharging through groove 32, the loading plate 3 needs to be lifted, and in this embodiment, the positioning assembly not only realizes the positioning of the loading plate 3, but also has the function of lifting the loading plate 3 so as to facilitate the falling of the cutting scraps.

The positioning assembly comprises cushion blocks 51 and positioning columns 52, six cushion blocks 51 are arranged and fixed on the upper end face of the supporting plate 14 through bolts, four cushion blocks 51 at four corners of the supporting plate 14 are arranged on the inner sides of the corresponding pressing claws 22, and the positioning columns 52 are embedded on the upper end faces of the four cushion blocks 51. The four horizontal end faces of the bearing plate 3 corresponding to the positioning columns 52 are provided with positioning through holes 33 matching with the positioning columns 52, and when the bearing plate 3 is placed on the supporting plate 14, the positioning through holes 33 on the bearing plate 3 are only required to be sleeved on the positioning columns 52. In addition, in order to facilitate taking and placing the bearing plate 3, taking and placing grooves 35 are formed in the end faces of two sides of the bearing plate 3.

Although the carrier plate 3 is elevated by the spacers 51, excessive swarf can accumulate on the upper end surface of the support plate 14 below the carrier plate 3. For this purpose, a plurality of support plate discharge through grooves 141 are formed in the support plate 14 below the support plate discharge through groove 32. By providing the support plate discharge through-slot 141, chips can fall onto the bottom plate 12 and can be removed before excessive chips accumulate due to the large space between the bottom plate 12 and the support plate 14.

Referring to fig. 5, 7, 8 and 9, a wedge clamping assembly is disposed along the length of the mounting groove 31, and includes a connecting block 41, a moving block 42, a wedge 43 and an adjusting bolt 44.

The upper end surface of the connecting block 41 is provided with a threaded hole, the connecting block 41 is horizontally arranged at the bottom of the plane groove of the mounting groove 31 and supports the moving block 42, the wedge 43 and the adjusting bolt 44, so that the connecting block 41 can be fixed at the bottom of the plane groove of the mounting groove 31 by bolts, but when the size of the workpiece 6 is small, the mounting groove 31 is also small, so that the connecting block 41 is not convenient to fix by bolts, and the connecting block 41 can be directly placed in the mounting groove 31. The opposite end surfaces of the two connecting blocks 41 are provided with connecting block inclined surfaces, the end surfaces of two sides of the wedge block 42 are provided with wedge block inclined surfaces matched with the inclined surfaces of the connecting blocks 41, and the wedge block inclined surfaces of the wedge block 42 are respectively abutted against the connecting block inclined surfaces of the two connecting blocks 41. A through hole is vertically formed in the wedge 42, and an adjusting bolt 44 is inserted into the through hole and is screwed into the threaded hole of the connecting block 41.

The two moving blocks 42 are oppositely arranged and are all arranged on the connecting block 41, the connecting block 41 can be designed in a split mode with the moving block 41 like an ok clamp of a traditional wedge clamping mechanism, the moving block 41 slides along a sliding groove on the upper end face of the connecting block 41, when the adjusting bolt 44 is screwed, the wedge block 43 moves downwards to drive the two moving blocks 42 to move towards two sides so as to tightly push against the workpiece 6, and therefore the workpiece 6 is positioned and fixed through the groove wall of the arc-shaped groove of the mounting groove 31 and the moving block 42. However, this structure is complicated, and it is difficult to install the wedge clamping unit in the installation groove 31 when the installation groove 31 has a small size, and therefore, in a preferred embodiment, the connection block 41 has a U-shaped structure with an upward opening, and both side plates of the connection block 41 are integrally connected to one ends of the two moving blocks 42 close to the wedges, respectively. Since the two side plates of the connecting block 41 have elasticity, when the adjusting bolt 44 is tightened, the two side plates of the connecting block 41 are elastically deformed by the downward movement of the wedge 43, so that the moving block 42 moves outward, thereby clamping the workpiece 6. Through with connecting block 41 and movable block integrated design, when having reduced the installation degree of difficulty of voussoir centre gripping subassembly for the structure is simpler, the installation is more convenient.

Since the moving block 42 can move only in the flat groove of the mounting groove 31, the moving block 42 is in point contact or in surface contact with a small arc with respect to the workpiece 6 when the workpiece 6 is clamped, the contact surface is small, and when the clamping force is too large, the moving block 42 damages the surface of the workpiece 6. For this reason, in the present embodiment, the groove wall of the flat groove between the inner walls of the arc-shaped grooves at both ends of the mounting groove 31 extends outward to form the sliding groove 34, and the moving block 42 abuts against the groove wall of the stopper groove 34. By providing the sliding groove 34, the inner space of the mounting groove 31 is increased, and the size of the moving block 42 can be increased, and in order to increase the contact area between the moving block 42 and the workpiece 6, a holding groove 421 matching the size of the workpiece 6 is formed in the end surface of the moving block 42 facing the workpiece 6. In addition, through the arrangement of the sliding groove 34, the groove wall of the sliding groove 34 opposite to the moving direction of the moving block 43 can block the moving block 43, so that the moving block 43 is limited when moving, and the situation that the moving block 43 tightly pushes the workpiece 6 for many degrees due to the fact that the adjusting bolt 44 is excessively screwed is avoided.

The embodiment of the utility model provides a working process as follows:

1. the base plate 12 is installed on the milling worktable according to the structural description above, and the supporting piece 13, the supporting plate 14, the cylinder 21 and the cushion block 51 are installed in sequence, as shown in fig. 3, at this time, the pressing claw 22 is parallel to the length direction of the supporting plate 14;

2. referring to fig. 4, the workpiece 6 is vertically inserted into the mounting groove 31 on the bottom plate 12 at two ends, and the adjusting bolt 44 is screwed to tightly push the moving block 42 against the workpiece 6, so as to position and fix the workpiece 6; in the clamping process, the positioning reference of the clamping is arranged on the inner walls of the two ends of the mounting groove 31, so that the milling procedure can be set conveniently, and the two workpieces 6 can be fixed by screwing the adjusting bolt 44 once, so that the clamping efficiency is higher;

3. referring to fig. 2, the bearing plate 3 clamped with the workpiece 6 is sleeved on the positioning column 52, the cylinder 21 is started, the pressing claw 22 rotates by 90 degrees to stay above the bearing plate 3, and the pressing claw 22 moves downwards to press the bearing plate 3, so that the bearing plate 3 can be positioned and fixed and then milled; during the milling process, another batch of workpieces 6 can be clamped on the other set of bearing plate 3, after the previous batch of workpieces 6 are processed and the bearing plate 3 is taken down, the bearing plate 3 loaded with the next batch of workpieces 6 is directly sleeved on the positioning column 52, and then the next round of positioning, fixing and milling can be achieved, so that the clamping period is shortened, and the clamping and overall processing efficiency is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multi-workpiece milling tool clamp, includes the bottom plate of level setting, its characterized in that: a support piece is vertically and fixedly connected to the bottom plate, and a support plate is horizontally arranged on the upper end face of the support piece; the lower end face of the supporting plate is vertically provided with an air cylinder, a guide rod of the air cylinder penetrates through the supporting plate in a sliding mode and extends to the upper portion of the supporting plate, and a pressing claw is fixedly sleeved on the guide rod; the bearing plate is positioned on the supporting plate through a positioning component arranged on the supporting plate, the cylinder drives the pressing claw to fix the bearing plate on the supporting plate, a plurality of waist-shaped mounting grooves are formed in the upper end face of the bearing plate, and the arc-shaped inner walls at two ends of each mounting groove are matched with a workpiece; and a wedge block clamping component which can move towards the arc-shaped inner walls at the two ends of the mounting groove and is used for tightly pushing a workpiece is arranged in the middle of the mounting groove.

2. The multi-workpiece milling tooling fixture of claim 1, wherein: the wedge block clamping assembly comprises a connecting block horizontally arranged at the bottom of the mounting groove, two moving blocks oppositely arranged on the connecting block, a wedge block abutted against the end faces opposite to the two moving blocks, and an adjusting bolt vertically slidably arranged in the wedge block in a penetrating manner and in threaded connection with the connecting block.

3. The multi-workpiece milling tooling fixture of claim 2, wherein: the connecting block is of a U-shaped structure with an upward opening, and two side plates of the connecting block are respectively connected with one ends, close to the wedge blocks, of the two moving blocks in an integrated forming mode.

4. A multi-workpiece milling tooling fixture as claimed in claim 2 or 3, wherein: and the groove wall between the arc-shaped inner walls at the two ends of the mounting groove extends outwards to form a sliding groove, the moving block is abutted against the groove wall of the limiting groove, and a clamping groove matched with the workpiece is formed in the end face, opposite to the workpiece, of the moving block.

5. The multi-workpiece milling tooling fixture of claim 1, wherein: the positioning assembly comprises a plurality of cushion blocks fixedly connected with the upper end face of the supporting plate, positioning columns vertically embedded in the upper end faces of the cushion blocks, positioning through holes matched with the positioning columns are formed in the bearing plate, and the bearing plate can be sleeved on the positioning columns.

6. The multi-workpiece milling tool fixture of claim 5, wherein: and a plurality of loading plate unloading through grooves are formed in the loading plate close to the mounting groove.

7. The multi-workpiece milling tooling fixture of claim 6, wherein: and a plurality of supporting plate discharging through grooves are formed in the supporting plate below the loading plate discharging through groove.

8. The multi-workpiece milling tooling fixture of claim 1, wherein: the cylinder is a rotary clamping cylinder.

9. The multi-workpiece milling tool fixture of claim 1, wherein: the bearing plate is provided with a taking and placing groove on the end surfaces of two sides.

10. The multi-workpiece milling tooling fixture of claim 1, wherein: the bottom plate is provided with a waist-shaped connecting through hole, and a fastening bolt penetrates through the connecting through hole to fix the bottom plate on the milling worktable.