CN211249217U - Fixing clamp for milling machine - Google Patents

Abstract

The utility model relates to the technical field of milling machines, in particular to a fixed clamp for a milling machine, which has the technical proposal that a workpiece clamping groove is formed between an upper groove and a lower groove together; the top of butt joint piece is run through and is provided with the mounting hole, is provided with first lead screw in the mounting hole, and the mounting hole is worn out to the bottom of first lead screw and is connected with the fixed block, is provided with first ball on the first lead screw, and first ball is connected with the butt joint piece, is provided with on the butt joint piece to be used for driving first lead screw pivoted driving piece. Put into the low groove with the work piece in the space of fixed block and butt piece one side, rotate first lead screw, first lead screw drives first ball and rotates, and because first ball is connected with the butt piece, and under the limiting displacement of locating part, make first ball and butt piece produce the removal along the axial of first lead screw, thereby make the butt piece remove and accomplish the combination of upper groove and low groove to the fixed block direction, thereby can firmly fix the work piece, thereby can effectively improve the machining precision of milling machine.

Description

Fixtures for milling machines

technical field

The utility model relates to the technical field of milling machines, in particular to a fixing fixture for milling machines.

Background technique

Milling machines mainly refer to machine tools that use milling cutters to process various surfaces of workpieces. Usually, the milling cutter mainly moves by rotation, and the movement of the workpiece and the milling cutter is the feed movement. In addition to milling planes, grooves, gear teeth, threads and spline shafts, milling machines can also process more complex profiles, with higher efficiency than planers, and are widely used in machinery manufacturing and repair departments. In addition, it can also be used to process the surface of the revolving body, the inner hole and the cutting work. When the milling machine is working, the workpiece is mounted on the table or on the accessories such as the indexing head. The rotation of the milling cutter is the main movement, supplemented by the feed movement of the table or the milling head, and the workpiece can obtain the required machining surface. When using a milling machine to mill a workpiece, the workpiece should be accurately clamped on the fixture first, and the clamping accuracy directly affects the machining accuracy.

The Chinese patent with the existing authorization announcement number CN206536251U discloses a milling machine fixture, which includes a base, a first fixing block is fixedly connected to the left side of the top of the base, and a motor is fixedly connected to the shaft center on the left side of the inner cavity of the first fixing block. The output end of the motor is fixedly connected with a first threaded rod, the surface of the first threaded rod is sleeved with a threaded pipe, and the right side of the threaded pipe penetrates the first fixing block and extends to the outside of the first fixing block. When in use, the workpiece is placed between the first splint and the second splint, the controller controls the motor to run, the motor drives the threaded pipe to move through the first threaded rod, and the threaded pipe drives the first connecting block and the first splint to move, and the workpiece is moved. clamped.

However, the above-mentioned prior art scheme has the following defects: the workpiece is compressed by moving the first clamping plate, but the pressure of the moving pressure plate is not easy to control, and it is completely determined by the operator's feeling, it is not easy to accurately position the workpiece, and it is difficult to ensure that the workpiece is the positioning accuracy, thus affecting the machining accuracy of the milling machine.

Utility model content

In view of the deficiencies in the prior art, the purpose of the present invention is to provide a fixing fixture for a milling machine which can effectively improve the machining accuracy of the milling machine.

The above-mentioned purpose of the present invention is achieved through the following technical solutions:

A fixing fixture for a milling machine, the milling machine includes a milling machine body and a workbench arranged on the milling machine body, the workbench is provided with a base, a fixing block is arranged on the base, and a lower surface is arranged on the top surface of the fixing block. A groove, an abutment block is arranged above the fixed block, an upper groove corresponding to the upper groove is arranged on the bottom surface of the abutment block, and a workpiece is formed between the upper groove and the lower groove. A clamping slot; a mounting hole is provided through the top of the abutting block, a first screw rod is arranged in the mounting hole, and the bottom end of the first screw rod is connected to the fixing block through the mounting hole, and the first screw rod is connected to the fixing block. A first ball is arranged on the lead rod, and the first ball is connected with the abutting block, the abutting block is provided with a driving member for driving the rotation of the first lead screw, and the abutting block is provided with a driving member for driving the rotation of the first lead screw A limiter that prevents the abutment block from rotating with the first ball.

By adopting the above technical solution, the workpiece is first put into the lower groove from the gap between the fixed block and the abutting block, and then the first screw rod is rotated, and the first screw rod drives the first ball to rotate, and because the first ball It is connected with the abutment block, and under the limiting action of the limiting member, the first ball and the abutment block move along the axial direction of the first screw rod, so that the abutment block moves in the direction of the fixed block and completes the lifting process. The combination of the groove and the lower groove can firmly fix the workpiece, thereby effectively improving the machining accuracy of the milling machine.

In a preferred example of the present invention, it can be further configured as follows: a top end of the abutting block and one end away from the mounting hole is provided with a connecting hole, the limiting member includes a top rod disposed in the connecting hole, and the top The bottom end of the rod is connected with the fixing block through the connecting hole.

By adopting the above technical solution, the ejector rod is arranged in the connection hole, which can limit the position of the abutment block, prevent the abutment block from rotating with the first ball, and make the abutment block intelligently move up and down in the vertical direction, so that the To further ensure the accuracy of the combination of the upper groove and the lower groove.

In a preferred example of the present invention, it can be further configured that: the inner wall of the mounting hole is provided with a connecting groove, the connecting groove is annular, and the first ball is disposed in the connecting groove.

By adopting the above technical solution, the first ball is arranged in the connection groove, which can further increase the connection stability between the first ball and the abutting block.

In a preferred example of the present invention, a positioning block is provided on the end surface of the abutting block close to the fixing block, and a positioning groove into which the positioning block extends is provided on the fixing block.

By adopting the above technical solution, when the workpiece is fixed by the upper groove and the lower groove, the positioning block extends into the positioning groove, which can enhance the connection stability between the fixing block and the abutting block.

In a preferred example of the present invention, it can be further configured as follows: the top surface of the base is provided with a mounting groove, the bottom end of the fixing block is located in the mounting groove, and the base is provided with a mounting groove for fixing the fixing block. Fastener.

By adopting the above technical solution, the fixing block and the base are detachably connected, which can facilitate the installation and removal of the fixing block, and the fixing block is engaged in the installation groove, which can enhance the stability of the installation of the fixing block.

In a preferred example of the present invention, it can be further configured as follows: the inner wall of the installation groove is provided with a vacant hole, a sliding rod is arranged in the vacated hole, and one end of the sliding rod protrudes from the vacated hole It is arranged in an arc shape, the fixing block is provided with an abutment groove into which the arc-shaped end of the sliding rod extends, and the abutment hole is provided with an elastic force in the direction of the abutment groove to the sliding rod. The elastic element of the force.

By adopting the above technical solution, when the fixing block is installed, the fixing block is clamped in the installation groove, and the arc-shaped end of the sliding rod is extended into the abutting groove under the elastic action of the elastic member, so that the The fixed block is firmly fixed, which increases the connection stability between the fixed seat and the base. The connection stability between the fixed seat and the base is further ensured by the double locking of the installation groove and the sliding rod.

In a preferred example of the present invention, it can be further configured as follows: the fixing block is provided with a guide hole communicating with the abutting groove, a push link is arranged in the guide hole, and one end of the push link is connected to the The sliding rods abut against each other, and the other end of the push rod extends out of the fixed block and is connected with a button.

By adopting the above technical solution, when the fixing block needs to be disassembled, press the button on the fixing block, the button pushes the sliding rod to move by pushing the connecting rod, and the sliding rod moves in the direction close to the vacant hole under the action of the thrust, and removes the The slide bar pushes out of the abutment groove. When the sliding rod is completely separated from the abutment groove, the fixing block can be removed from the installation groove to be replaced, which can facilitate the disassembly of the fixing block. On the other hand, the arrangement of the push rod and the button can prevent the sliding rod and the abutting rod from being damaged due to contact between the sliding rod and the abutting groove when the fixed block moves upward.

In a preferred example of the present invention, it can be further configured as follows: rubber pads are arranged in both the upper groove and the lower groove.

By adopting the above technical solution, the arrangement of the rubber pad can prevent the upper groove and the lower groove from causing damage to the workpiece when clamping the workpiece.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. Through the setting of the fixed block and the abutment block, the fixed block and the abutment block are jointly provided with a workpiece clamping groove, and the fixed block is provided with a first screw rod for driving the abutment block to move up and down, so that the milling machine can be effectively improved. machining accuracy;

2. The connection stability between the fixed block and the abutment block can be further enhanced by the setting of the positioning block and the positioning groove;

3. The connection stability between the fixed block and the base can be enhanced by the installation, the setting of the sliding rod and the abutting groove.

Description of drawings

Fig. 1 is the structural representation of the milling machine shown in the embodiment of the present invention;

Fig. 2 is the structural schematic diagram of the fixing clamp shown in the embodiment of the present invention;

Fig. 3 is the enlarged view of A part in Fig. 2;

FIG. 4 is a schematic structural diagram of another fixing fixture shown in the embodiment of the present invention.

In the figure, 1, the milling machine body; 11, the worktable; 12, the base; 14, the installation slot; 2, the fixing block; 21, the limit hole; 22, the sliding hole; 23, the sliding rod; 24, the first spring ; 25, abutment groove; 26, guide hole; 261, abutment hole; 262, fixing hole; 263, extrusion hole; 27, push link; 271, abutment rod; 272, drive rod; 273, extrusion rod; 274, button; 28, limit plate; 3, abutment block; 31, lower groove; 32, upper groove; 33, workpiece clamping groove; 4, positioning groove; 41, positioning block; 42, sealing gasket 5. Installation hole; 51. The first screw rod; 52. The first ball; 53. The handle; 54. The connecting groove; 55. The connecting hole;

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it is a fixing fixture for a milling machine disclosed by the utility model. The milling machine includes a milling machine body 1 and a worktable 11 arranged on the milling machine body 1 . The worktable 11 is provided with a base 12 , and the base 12 and the worktable 11 are connected by fixing bolts.

Referring to FIGS. 2 and 3 , a mounting groove 14 is provided on the top surface of the base 12 , and a fixing block 2 is provided in the mounting groove 14 . The inner wall of the installation groove 14 along the length direction of the worktable 11 is provided with a pass-through hole. In this embodiment, the pass-through hole includes a limit hole 21 and a sliding hole 22 arranged in sequence, and the limit hole 21 has a diameter larger than The diameter of the slip hole 22 . A sliding rod 23 is disposed in the sliding hole 22 , and one end of the sliding rod 23 extends into the limiting hole 21 and is connected with a limiting ring to prevent the sliding rod 23 from being separated from the sliding hole 22 . The other end of the sliding rod 23 protrudes out of the escape hole and is arranged in an arc shape. An elastic member is arranged in the limiting hole 21 . Specifically, the elastic member includes a first spring 24 , one end of the first spring 24 is connected with the bottom wall of the limiting hole 21 , and the other end of the first spring 24 is connected with the sliding rod 23 connected.

2 and 3 , the fixing block 2 is provided with an abutment groove 25 into which the arcuate end of the sliding rod 23 extends. Guide holes 26 are provided on the two side walls of the fixing block 2 along the length direction of the worktable 11, and a push link 27 is arranged in the guide holes 26. In this embodiment, the guide holes 26 include abutments arranged in sequence The hole 261 , the fixing hole 262 and the pressing hole 263 , the pressing hole 263 communicates with the abutting groove 25 , and the diameter of the abutting groove 25 is larger than that of the pressing hole 263 . The push link 27 includes an abutting rod 271 , a driving rod 272 and a pressing rod 273 arranged in sequence, and the abutting rod 271 is provided in the abutting hole 261 , the driving rod 272 is provided in the fixing hole 262 , and the pressing rod 273 is provided inside the extrusion hole 263 . One end of the abutting rod 271 protrudes from the abutting hole 261 and is connected to a button 274 , the other end of the abutting rod 271 abuts against the driving rod 272 , and the end surfaces of the abutting rod 271 and the driving rod 272 are inclined. One end of the driving rod 272 away from the abutting rod 271 abuts against the pressing rod 273 , and the end surfaces of the driving rod 272 in contact with the pressing rod 273 are inclined. A limiting plate 28 is disposed at one end of the pressing rod 273 away from the driving rod 272 , and the limiting plate 28 is disposed in the abutting groove 25 , and a plurality of second springs (not shown in the figure) are disposed in the abutting groove 25 , and A plurality of second springs are evenly distributed along the circumferential direction of the abutment groove 25 , one end of the second spring is connected to the bottom wall of the abutment groove 25 , and the other end of the second spring is connected to the limiting plate 28 .

Referring to FIG. 4 , an abutment block 3 is arranged above the fixing block 2 , a lower groove 31 is arranged on the top surface of the fixing block 2 , and the lower groove 31 extends to the two end faces of the fixing block 2 along the length direction of the table 11 Upper grooves 32 corresponding to the lower grooves 31 are provided on the bottom surface of the abutting block 3 , and the upper grooves 32 extend to the two end surfaces of the abutting block 3 along the length direction of the table 11 . The upper groove 32 and the lower groove 31 together form a workpiece clamping groove 33 for clamping the workpiece. In this embodiment, six workpiece clamping grooves 33 are provided, and three of the workpiece clamping grooves 33 are arranged in a circular shape, and the remaining three workpiece clamping grooves 33 are arranged in a rectangular shape, and each rectangular workpiece clamping groove 33 is provided with a corresponding The two circular workpiece clamping grooves 33 are adjacent to each other, so that the clamp can clamp both circular workpieces and rectangular workpieces.

Referring to FIG. 4 , a plurality of positioning grooves 4 are provided on the top surface of the fixing block 2 , and a positioning block 41 extending into the positioning groove 4 is provided on the abutting block 3 , which can further increase the connection between the fixing block 2 and the abutting block 3 stability. In addition, a sealing gasket 42 is provided on the top surface of the fixing block 2 to avoid damage to the abutting block 3 and the fixing block 2 when the abutting block 3 is in contact with the fixing block 2 . In addition, rubber pads are arranged in the upper groove 32 and the lower groove 31 to avoid damage to the workpiece.

4, the top end of the abutment block 3 is provided with a mounting hole 5, and the mounting hole 5 is provided with a first screw rod 51, and the bottom end of the first screw rod 51 is connected to the fixing block 2 through the mounting hole 5, The top end of the first screw rod 51 passes through the mounting hole 5 and is connected to a handle 53, and the first screw rod 51 is sleeved with a first ball 52, and the inner wall of the mounting hole 5 is provided with a connecting groove 54, and the connecting groove 54 is in the form of a ring The first ball 52 is arranged in the connecting groove 54 . The top end of the abutment block 3 and the end away from the installation hole 5 is provided with a connecting hole 55 , and a limiter is provided on the abutment block 3 , and the limiter includes a top rod 56 arranged in the connection hole 55 , and the top rod 56 The bottom outgoing connection hole 55 is connected with the fixing block 2 . By rotating the first screw rod 51 by the handle 53 , the first screw rod 51 drives the first ball 52 to rotate, and because the first ball 52 is connected with the abutment block 3 , and under the limiting action of the ejector rod 56 , the first ball 52 is made to rotate. The ball 52 and the abutment block 3 move along the axial direction of the first screw rod 51, so that the abutment block 3 moves in the direction of the fixed block 2 and completes the combination of the upper groove 32 and the lower groove 31, so that the workpiece can be firmly It is firmly fixed, which can effectively improve the machining accuracy of the milling machine.

The implementation principle of this embodiment is:

When in use, firstly fix the base 12 of the clamp to the corresponding position on the workbench 11 through the fixing bolts 13, and then engage the fixing block 2 in the installation groove 14 on the base 12, at this time, the sliding rod 23 extends into Abutting into the groove 25, so as to fix the fixing block 2 firmly.

After fixing the fixing block 2, put the workpiece into the lower groove 31 from the gap between the fixing block 2 and the abutting block 3 side, and then turn the first screw rod 51 through the handle 53, and the first screw rod 51 drives the first screw rod 51. A ball 52 rotates, and because the first ball 52 is connected with the abutment block 3 and under the limiting action of the ejector rod 56 , the first ball 52 and the abutment block 3 are generated along the axial direction of the first screw rod 51 . move, so that the abutment block 3 moves in the direction of the fixed block 2 and completes the combination of the upper groove 32 and the lower groove 31, so that the workpiece can be firmly fixed, and the positioning block 41 extends into the positioning groove 4, so as to further The connection stability between the abutting block 3 and the fixing block 2 is increased, so that the machining accuracy of the milling machine can be effectively improved.

When the workpiece needs to be taken out, the first screw rod 51 is rotated in the opposite direction through the handle 53, the first screw rod 51 drives the first ball 52 to rotate, and under the limiting action of the ejector rod 56, the contact block 3 moves away from the fixed block. 2, so that the workpiece can be taken out.

When the fixing block 2 needs to be disassembled, the abutting rod 271 is pressed by the button 274, and the driving rod 272 is moved downward under the guiding action of the abutting rod 271 and the inclined surface of the driving rod 272. During the downward movement of the driving rod 272 , and under the guiding action of the drive rod 272 and the inclined surface of the extrusion rod 273, the extrusion rod 273 moves in the direction close to the abutment groove 25, and drives the limit plate 28 to move. When the limit plate 28 moves, the sliding rod 23 pushes out the abutment groove 25 and drives the second spring 29 to elongate. After the sliding rod 23 is completely separated from the abutment groove 25 , the fixing block 2 can be taken out from the installation groove 14 . And after the button 274 is released, the limiting plate 28 , the pressing rod 273 , the driving rod 272 , and the abutting rod 271 return to their original positions under the elastic force of the second spring 29 .

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: any equivalent changes made according to the structure, shape and principle of the present invention should be Covered within the scope of protection of the present invention.

Claims (8)

1. A fixing fixture for a milling machine, the milling machine comprising a milling machine body (1) and a workbench (11) arranged on the milling machine body (1), characterized in that: the workbench (11) is provided with a base (12) ), the base (12) is provided with a fixing block (2), the top surface of the fixing block (2) is provided with a lower groove (31), and an abutting block is provided above the fixing block (2) (3), the bottom surface of the abutting block (3) is provided with an upper groove (32) corresponding to the upper groove (32), the upper groove (32) and the lower groove (31) A workpiece clamping groove (33) is formed between them; a mounting hole (5) is provided through the top end of the abutting block (3), and a first screw rod (51) is arranged in the mounting hole (5). The bottom end of a lead rod (51) passes through the mounting hole (5) and is connected to the fixing block (2). The first lead screw (51) is provided with a first ball (52), and the first ball ( 52) is connected to the abutment block (3), the abutment block (3) is provided with a driving member for driving the first screw rod (51) to rotate, and the abutment block (3) is provided with a driving member for preventing the The abutting block (3) follows the rotation limiter of the first ball (52). 2 . The fixing jig for a milling machine according to claim 1 , wherein a connecting hole ( 55 ) is provided at the top end of the abutting block ( 3 ) and at one end away from the mounting hole ( 5 ). It comprises a top rod (56) arranged in the connecting hole (55), and the bottom end of the top rod (56) passes through the connecting hole (55) and is connected with the fixing block (2). 3 . The fixing fixture for a milling machine according to claim 1 , wherein a connecting groove ( 54 ) is provided on the inner wall of the mounting hole ( 5 ), the connecting groove ( 54 ) is annular, and the The first ball (52) is arranged in the connecting groove (54). 4. The fixing fixture for a milling machine according to claim 1, wherein a positioning block (41) is provided on the end surface of the abutting block (3) close to the fixing block (2), and the fixing block (2) A positioning groove (4) into which the positioning block (41) is inserted is provided. 5. The fixing fixture for a milling machine according to claim 1, wherein a mounting groove (14) is provided on the top surface of the base (12), and the bottom end of the fixing block (2) is located in the mounting groove (14). 14), the base (12) is provided with a fixing piece for fixing the fixing block (2). 6. The fixing jig for a milling machine according to claim 5, characterized in that: the inner wall of the installation groove (14) is provided with a ceding hole, and a sliding rod (23) is arranged in the ceding hole, so that the One end of the sliding rod (23) protrudes out of the vacant hole and is arranged in an arc shape, and the fixing block (2) is provided with an abutment groove (25) into which the arc-shaped end of the sliding rod (23) extends. ), an elastic piece for applying an elastic force toward the abutment groove (25) to the sliding rod (23) is provided in the abutment hole. 7 . The fixing fixture for a milling machine according to claim 6 , wherein the fixing block ( 2 ) is provided with a guide hole ( 26 ) that communicates with the abutment groove ( 25 ). The guide hole ( 26 ) ) is provided with a push rod (27), one end of the push rod (27) is in contact with the sliding rod (23), and the other end of the push rod (27) protrudes from the fixing block (2) and is connected with a button (274). 8 . The fixing fixture for a milling machine according to claim 1 , wherein rubber pads are provided in the upper groove ( 32 ) and the lower groove ( 31 ). 9 .

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