CN219617180U - Clamp for milling rectangular workpiece - Google Patents

Abstract

A fixture for milling a rectangular workpiece, belonging to the field of fixture technology, comprising a first base, a drive mechanism is provided on the rear side of the first base, a clamping mechanism is connected to the front end of the drive mechanism, and the drive mechanism includes a second base set on the inner wall of the rear side of the first base. A limiting groove, the inner wall of the first limiting groove is rotatably connected with a screw rod, and the screw rod penetrates the outer wall of the first base toward the outside, and a hand wheel is installed outside the outer wall of the screw rod. The utility model can drive all the jaws synchronously downward to realize the positioning of the four corners of the rectangular workpiece by means of the drive of the screw rod, which is faster and more accurate than the method of point-by-point positioning of the four corners of the rectangular workpiece, with simple steps and synchronous effect The driving power of multiple jaws is the same, so the tightness of multiple jaws to the four corners of the rectangular workpiece is guaranteed to be consistent, and the rectangular workpiece after the fixed position can be driven to move forward and backward without disassembling the rectangular workpiece.

Description

A fixture for milling a rectangular workpiece

technical field

The utility model belongs to the technical field of fixture equipment, in particular to a fixture for milling rectangular workpieces.

Background technique

Fixtures play an important role in the milling process of the workpiece, especially in milling machine processing, it is necessary to use the fixture to position the workpiece before milling;

Existing milling machines often adopt the method of point-by-point fixing to realize the positioning of the rectangular workpiece at the milling machine, that is, the four corners of the rectangular workpiece need to be positioned separately. The above-mentioned positioning of the rectangular workpiece is difficult to realize the positioning of the four corners of the rectangular workpiece at the same time. In milling machine processing, on the one hand, the point-by-point fixing method takes a long time to fix the workpiece and the steps are cumbersome; After the workpiece is finally fixed, the stability of the four corners is different. Therefore, based on the above defects, a fixture for milling rectangular workpieces is proposed to solve the above problems.

Utility model content

For the existing milling machine furniture in the prior art, the method of point-by-point fixing is adopted. On the one hand, the fixing time of the workpiece is long and the steps are cumbersome. On the other hand, the tightness of the four corners positioning needs to be adjusted one by one. There may also be a problem of subtle differences. The utility model provides a fixture for milling a rectangular workpiece. With the help of the drive of the screw, all jaws can be driven downward synchronously to realize the positioning of the four corners of the rectangular workpiece. Compared with the positioning of the four corners of the rectangular workpiece The method of point-by-point positioning is faster and more accurate, the steps are simple, and the driving power of multiple jaws acting synchronously is the same, so the tightness of multiple jaws for the positioning of the four corners of the rectangular workpiece is guaranteed to be consistent. Its specific technical scheme is as follows:

A fixture for milling a rectangular workpiece, comprising a first base, a drive mechanism is provided on the rear side of the first base, a clamping mechanism is connected to the front end of the drive mechanism, and a clamping mechanism is provided on the rear side of the first base. The first limiting groove on the inner wall, the inner wall of the first limiting groove is rotatably connected with a screw, and the screw penetrates the outer wall of the first base outwardly, a handwheel is installed on the outer wall of the screw, and the screw The left and right sides of the outer wall are respectively threaded with moving rods, and the moving rod is slidably embedded in the inner cavity of the first limiting groove, and a clamping mechanism is installed on the inner side of the outer wall of the moving rod, and the clamping mechanism includes The connecting rod installed on the inner side of the outer wall of the moving rod also includes a fixed seat installed on the top of the outer wall of the first base, the top of the fixed seat is equipped with a connecting seat, and the outer wall of the connecting seat is rotatably connected to one end of the jaw, The outer wall of the jaw is provided with a chute, the outer wall of the connecting rod is equipped with a driving rod, and the driving rod is slidably embedded in the inner cavity of the chute provided on the outer wall of the jaw, and the outer wall of the jaw is The bottom limit has a rectangular workpiece.

In the above technical solution, the directions of the screw threads on the left and right sides of the outer wall of the screw are opposite.

In the above technical solution, the chute provided on the outer wall of the jaw is arranged in an arc shape.

In the above technical solution, the front inner wall of the first base is provided with a limiting component, and the limiting component includes a second limiting groove opened on the front inner wall of the first base, and the inner wall of the second limiting groove is installed There is an optical rod, and the moving rod is sheathed on the outer wall of the optical rod.

In the above technical solution, the clamping jaws are respectively arranged at the four corners of the rectangular workpiece.

In the above technical solution, a pushing mechanism is provided at the bottom end of the first base, and the pushing mechanism includes a second base arranged at the bottom end of the outer wall of the first base, and a receiving plate is installed on the front side of the outer wall of the second base, so A cylinder is installed on the top of the outer wall of the receiving plate, the output end of the cylinder penetrates and extends into the inner cavity of the second base, the top of the outer wall of the second base is provided with a third limiting groove, and the output end of the cylinder is connected The limiting block is installed on the bottom end of the outer wall of the first base, and the limiting block is slidably embedded in the inner cavity of the third limiting groove.

In the above technical solution, the cross-sectional shape of the third limiting groove is set as a dovetail shape.

A fixture for milling a rectangular workpiece of the utility model, compared with the prior art, has the beneficial effects of:

1. The existing furniture for milling machines adopts the way of fixing points one by one. On the one hand, the fixing time of the workpiece is long and the steps are cumbersome, and there may be subtle differences in the tightness of the final positioning of the four corners. The utility model can realize the simultaneous positioning of the four corners of the rectangular workpiece. Positioning, with the cooperation of the handwheel, the screw, and the first limit groove, the moving rod can drive the connecting rod on the outer wall to move inward at the same time, and through the cooperation of the connecting rod, the driving rod, the jaws and the connecting seat, the jaws can be driven to It rotates with the rotating connection of the outer wall of the connecting seat to realize the simultaneous rotation of the four jaws inwardly to realize the simultaneous positioning of the four corners of the rectangular workpiece. The utility model can drive all the jaws downward synchronously to achieve the rectangular The positioning of the four corners of the workpiece is faster and more accurate than the point-by-point positioning of the four corners of the rectangular workpiece. The tightness of positioning at the four corners of the rectangular workpiece is consistent, realizing more stable positioning and clamping of the rectangular workpiece;

2. On the basis of the stable and synchronous positioning of the four corners of the rectangular workpiece, the utility model can realize the front and rear movement of the first base as a whole by means of the cylinder and the limit block, and then realize the forward and backward movement of the positioned rectangular workpiece. It can drive the rectangular workpiece in a fixed position to move back and forth without disassembling the rectangular workpiece, which is more convenient to cooperate with the milling machine equipment to realize the processing operations such as slotting in the front and rear directions of the rectangular workpiece, so that the equipment can better meet the actual use requirements of rectangular workpiece processing;

To sum up, the utility model can drive all the jaws downward synchronously to realize the positioning of the four corners of the rectangular workpiece by means of the drive of the screw, which is faster and more accurate than the way of point-by-point positioning of the four corners of the rectangular workpiece, and the steps are simple. And the driving power of multiple jaws acting synchronously is the same, so the tightness of multiple jaws to the four corners of the rectangular workpiece is guaranteed to be consistent, and the positioning and clamping of the rectangular workpiece is more stable, and it can also be used without disassembling the rectangular workpiece. Under the premise of driving the rectangular workpiece in a fixed position to move forward and backward, it is more convenient to cooperate with milling machine equipment to realize processing operations such as slotting in the front and rear directions of the rectangular workpiece.

Description of drawings

Fig. 1 is the front sectional view of a clamp for milling a rectangular workpiece according to Embodiment 1 of the present invention;

Fig. 2 is a top sectional view of a fixture for milling a rectangular workpiece according to Embodiment 1 of the utility model;

Fig. 3 is a top sectional view of a fixture for milling a rectangular workpiece according to Embodiment 2 of the utility model;

In Fig. 1-3, 1, the first base, 2, the first limit groove, 3, the screw rod, 4, the hand wheel, 5, the moving rod, 6, the connecting rod, 7, the fixed seat, 8, the connecting seat, 9 , Gripper, 10, Driving lever, 11, Second limit groove, 12, Light rod, 13, Second base, 14, Accepting plate, 15, Cylinder, 16, Third limit groove, 17, Limit block , 18, rectangular workpiece.

Detailed ways

The utility model will be further described below in conjunction with specific implementation examples and accompanying drawings 1-3, but the utility model is not limited to these embodiments.

Example 1

As shown in Figure 1-2, a fixture for milling rectangular workpieces. This fixture is used for auxiliary positioning of rectangular workpieces during milling machine processing. This fixture can be installed on the workbench of the milling machine, and the specific connection method between the fixture and the milling machine It is an existing technology that cooperates with a milling machine to realize the milling work of a rectangular workpiece, including a first base 1, a driving mechanism is arranged on the rear side of the first base 1, and a clamping mechanism is connected to the front end of the driving mechanism, and the clamping mechanism can be urged to clamp by the driving mechanism. Tight, the driving mechanism includes a first limiting groove 2 opened on the inner wall of the rear side of the first base 1, and the inner wall of the first limiting groove 2 is connected with a screw 3 through bearing rotation, and the screw rod 3 can move along the inner wall of the first limiting groove 2. The cavity rotates, and the screw rod 3 penetrates the outer wall of the first base 1 to the outside. A hand wheel 4 is installed outside the outer wall of the screw rod 3. The screw rod 3 can be driven to rotate by turning the hand wheel 4. The left and right sides of the outer wall of the screw rod 3 are respectively threaded. The screw rod 5 and the left and right sides of the outer wall of the screw rod 3 are set in opposite directions, and the rotation of the screw rod 3 with opposite thread directions can drive the two moving rods 5 on the left and right sides to move inwardly at the same time, and the moving rod 5 is slidingly embedded in the first The inner cavity of a limit groove 2 can move along the inner cavity of the first limit groove 2 when the moving rod 5 moves, and a clamping mechanism is installed on the inner side of the outer wall of the moving rod 5, and the movement of the moving rod 5 can drive the clamping mechanism. The clamping mechanism moves to the inside together. The clamping mechanism includes a connecting rod 6 installed on the inner side of the outer wall of the moving rod 5. Moving the moving rod 5 inwardly can drive the connecting rod 6 to move inwardly. Fixing seat 7, connecting seat 8 is installed on the top of fixing seat 7, the outer wall of connecting seat 8 is connected with one end of jaw 9 through pin shaft rotation, and jaw 9 can be pivoted at the rotating joint between it and connecting seat 8 under the action of external force. To rotate, the outer wall of the jaw 9 runs through and is provided with a chute, the chute provided by the outer wall of the jaw 9 is arc-shaped, the rotating jaw 9 can drive the chute of the outer wall to rotate together, and the outer wall of the connecting rod 6 is equipped with a driving lever 10, and the driving rod 10 is slidingly embedded in the inner cavity of the chute provided on the outer wall of the jaw 9, and the chute arranged in an arc can be used to promote the movement of the driving rod 10 along the inner cavity of the chute, and ensure that the clamping jaw 9 is in the inner cavity of the driving rod. The rotation is realized under the action of 10. When the driving rod 10 moves inwardly under the drive of the connecting rod 6, it can drive the jaws 9 to rotate inwardly. The bottom end of the outer wall of the jaws 9 is limited by a rectangular workpiece 18. The jaws 9 are respectively It is arranged at the four corners of the rectangular workpiece 18, and the outer wall of the rectangular workpiece 18 can be clamped and limited by means of the four clamping jaws 9 rotating inwardly;

In the above-mentioned preferred technical solution of this embodiment, the steps of realizing synchronous clamping and positioning at the four corners of the outer wall of the rectangular workpiece 18 by means of four jaws 9 are as follows: turn the handwheel 4 with the help of external force, and the rotating handwheel 4 drives the screw rod 3 to perform Rotate, because the thread directions on the left and right sides of the outer wall of the screw rod 3 are opposite, and the moving rods 5 are respectively threaded on the left and right sides of the outer wall of the screw rod 3, so the rotating screw rod 3 can drive the two moving rods 5 on the left and right sides along the first limit. The inner cavity of the bit groove 2 moves inwardly at the same time, and the moving rod 5 moving inwardly drives the connecting rod 6 and the driving rod 10 installed on the outer wall of the connecting rod 6 to move inwardly together, and the driving rod 10 moving inwardly moves along the jaw 9 The inner cavity of the chute provided on the outer wall moves to realize the rotation of the driving jaw 9 with the rotating connection between it and the outer wall of the connecting seat 8 as the axis, and the rotating jaw 9 gradually fits the outer wall of the rectangular workpiece 18. The jaws 9 realize the clamping and positioning at the top four corners of the rectangular workpiece 18 .

In order to ensure that the moving rod 5 can move stably, the inner wall of the front side of the first base 1 is provided with a limiting assembly, the limiting assembly includes a second limiting groove 11 opened on the inner wall of the front side of the first base 1, and the inner wall of the second limiting groove 11 The light rod 12 is installed, and the moving rod 5 is sleeved on the outer wall of the light rod 12. When the moving rod 5 moves, it can move along the outer wall of the light rod 12, thereby promoting the movement of the light rod 12 under the limit action The synchronous and stable movement of the front and rear ends of the rod 5.

In addition, the bottom end of the first base 1 is provided with a pushing mechanism, and the displacement of the first base 1 in the front and rear direction can be realized by means of the pushing mechanism. A receiving plate 14 is installed on the front side, and a cylinder 15 is installed on the top of the outer wall of the receiving plate 14. The cylinder 15 is existing equipment, which can meet the needs of use. There is no limit to its model here, and the output end of the cylinder 15 runs through and extends into the second In the inner cavity of the second base 13, the top of the outer wall of the second base 13 is provided with a third limiting groove 16, and the output end of the cylinder 15 is connected with the limiting block 17, and the opened cylinder 15 drives the limiting block 17 to move, and the limiting block 17 is installed on The bottom end of the outer wall of the first base 1, and the limit block 17 is slidably embedded in the inner cavity of the third limit groove 16, and the moving limit block 17 can drive the first base 1 to move together, thereby prompting the first base 1 The rectangular workpiece 18 after the top positioning is displaced in the front-back direction to meet the requirements of milling such as slotting in the front-back direction of the rectangular workpiece 18; Stable movement along the inner cavity of the third limiting groove 16 without breaking away from the inner cavity of the third limiting groove 16;

In the above-mentioned preferred technical solution of this embodiment, the adjustment steps for realizing the front-rear displacement of the first base 1 and the fixed rectangular workpiece 18 after the top end are as follows: drive the limit block 17 along the third limit with the help of the output end of the opened cylinder 15. The inner cavity of the bit groove 16 moves, and then drives the first base 1 connected to the top of the stop block 17 and the rectangular workpiece 18 after the top of the first base 1 is positioned to move forward and backward, thereby realizing the displacement of the rectangular workpiece 18 in the front and rear direction.

The working principle of a fixture for milling a rectangular workpiece in the above embodiment is:

In actual use, turn the handwheel 4 with the help of external force, and the rotating handwheel 4 drives the screw 3 to rotate. Since the directions of the threads on the left and right sides of the outer wall of the screw 3 are opposite, and the moving rod 5 is respectively threaded on the left and right sides of the outer wall of the screw 3, so The rotating screw rod 3 can drive the two moving rods 5 on the left and right sides to move inwardly along the inner cavity of the first limiting groove 2, and the moving rod 5 moving inwardly drives the connecting rod 6 and the dial installed on the outer wall of the connecting rod 6. The rods 10 move inwardly together, and the driving rod 10 moving inwardly moves along the inner cavity of the chute opened on the outer wall of the jaw 9, so that the driving jaw 9 can be driven to rotate on the axis of the rotating joint with the outer wall of the connecting seat 8, The rotating jaws 9 gradually fit the outer wall of the rectangular workpiece 18, and the four corners of the top of the rectangular workpiece 18 are clamped and positioned by means of the four simultaneously rotating jaws 9;

If it is necessary to displace the clamped and positioned rectangular workpiece 18 in the front and rear direction to realize processing such as slotting, the control button of the opened cylinder 15, and the output end of the opened cylinder 15 drives the limit block 17 along the third limit groove 16 The inner cavity of the inner cavity is moved, and then drives the first base 1 connected to the top of the stop block 17 and the rectangular workpiece 18 after the top of the first base 1 is positioned to move forward and backward, thereby realizing the displacement of the rectangular workpiece 18 in the front and rear direction;

The effect produced by the above-mentioned embodiment equipment after trial use is: the drive of the utility model by means of the screw rod 3 can impel all the jaws 9 to realize the positioning of the four corners of the rectangular workpiece 18 synchronously downwards, compared to the positioning of the four corners of the rectangular workpiece 18. The point-by-point positioning method is faster and more accurate, the steps are simple, and the driving power of multiple jaws 9 acting synchronously is the same, so the tightness of the positioning of the four corners of the rectangular workpiece 18 by multiple jaws 9 is guaranteed to be consistent, and the rectangular workpiece 18 is realized. The more stable positioning and clamping of the workpiece 18 can also drive the fixed rectangular workpiece 18 to move forward and backward without disassembling the rectangular workpiece 18, which is more convenient to cooperate with the milling machine equipment to realize the processing operations such as slotting in the front and rear directions of the rectangular workpiece 18.

Example 2

As shown in Figure 3, the difference between this embodiment and Embodiment 1 is that the jaws 9 are arranged in two symmetrical groups, and the bottom ends of the jaws 9 are arranged in a sheet shape, and the bottom ends of the outer walls of the jaws 9 are attached to a rectangular shape. The left and right sides of the top of the outer wall of the workpiece 18;

The working principle of this embodiment differs from that of Embodiment 1 in that: the driving rod 10 moving inwardly drives the bottom end of the outer wall of the gripper 9 to gradually approach the left and right sides of the top of the outer wall of the rectangular workpiece 18 until the gripper 9 and the top of the outer wall of the rectangular workpiece 18 Fitting, the synchronous positioning of the left and right sides of the outer wall top of the rectangular workpiece 18 is realized by means of the jaws 9 .

The effect produced by the above-mentioned embodiment equipment after trial use is: the drive of the utility model by means of the screw rod 3 can impel the two jaws 9 to synchronize downwards to realize the positioning of the left and right sides of the outer wall top of the rectangular workpiece 18, compared to the positioning of the rectangular workpiece 18. The method of point-by-point positioning at the four corners is faster and more accurate.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (7)

1. A fixture for milling a rectangular workpiece, comprising a first base (1), characterized in that a drive mechanism is provided on the rear side of the first base (1), the front end of the drive mechanism is connected with a clamping mechanism, and the The driving mechanism includes a first limiting groove (2) opened on the rear inner wall of the first base (1), the inner wall of the first limiting groove (2) is rotatably connected with a screw (3), and the screw ( 3) penetrating the outer wall of the first base (1) to the outside, a hand wheel (4) is installed on the outer wall of the screw (3), and the left and right sides of the outer wall of the screw (3) are respectively threaded with moving rods ( 5), and the moving rod (5) is slidably embedded in the inner cavity of the first limiting groove (2), and a clamping mechanism is installed on the inner side of the outer wall of the moving rod (5), and the clamping mechanism It includes a connecting rod (6) installed on the inner side of the outer wall of the moving rod (5), and a fixed seat (7) installed on the top end of the outer wall of the first base (1), and the top end of the fixed seat (7) is installed with Connecting seat (8), the outer wall of the connecting seat (8) is rotatably connected to one end of the clamping jaw (9), the outer wall of the clamping jaw (9) is provided with a chute, and the outer wall of the connecting rod (6) is installed There is a driving rod (10), and the driving rod (10) is slidably embedded in the inner cavity of the chute opened on the outer wall of the jaw (9), and the bottom end of the outer wall of the jaw (9) is limited by a rectangular workpiece (18). 2. A fixture for milling a rectangular workpiece according to claim 1, characterized in that: the screw threads on the left and right sides of the outer wall of the screw (3) are set in opposite directions. 3. A clamp for rectangular workpiece milling according to claim 1, characterized in that: the chute provided on the outer wall of the clamping jaw (9) is arranged in an arc shape. 4. A fixture for milling a rectangular workpiece according to claim 1, characterized in that: the inner wall of the front side of the first base (1) is provided with a limiting component, and the limiting component includes a (1) The second limit groove (11) on the inner wall of the front side, the light rod (12) is installed on the inner wall of the second limit groove (11), and the moving rod (5) is sleeved through the light bar. On the outer wall of bar (12). 5. A jig for milling a rectangular workpiece according to claim 1, characterized in that: the clamping jaws (9) are respectively arranged at the four corners of the rectangular workpiece (18). 6. A clamp for rectangular workpiece milling according to claim 5, characterized in that: the bottom end of the first base (1) is provided with a pushing mechanism, and the pushing mechanism includes ) the second base (13) at the bottom end of the outer wall, a receiving plate (14) is installed on the front side of the outer wall of the second base (13), and a cylinder (15) is installed on the top of the outer wall of the receiving plate (14), and the cylinder ( 15) The output end penetrates and extends into the inner cavity of the second base (13), the top of the outer wall of the second base (13) is provided with a third limiting groove (16), and the output end of the cylinder (15) is connected to A limit block (17), the limit block (17) is installed on the bottom end of the outer wall of the first base (1), and the limit block (17) is slidably embedded in the third limit groove (16) lumen. 7. The fixture for milling a rectangular workpiece according to claim 6, characterized in that the cross-sectional shape of the third limiting groove (16) is set as a dovetail shape.