CN221135666U - Positioning fixture for high-precision machining - Google Patents

Abstract

The utility model discloses a positioning fixture for high-precision processing, which relates to the technical field of positioning fixtures, including a base plate, an adjustment mechanism installed in the middle of the upper end of the base plate, a clamping mechanism installed on the upper end of the adjustment mechanism, first grooves symmetrically opened on the left and right sides of the upper end of the base plate, a movable seat slidably connected to the inner cavity of the first groove, scale lines symmetrically fixedly connected to the two end portions of the base plate, and pointers symmetrically installed at both ends of the clamping mechanism. The adjustment mechanism of the utility model, through the cooperation of the second groove, the screw rod, the threaded seat, the bearing plate, and the handle, relies on the rotating screw rod to drive the threaded seat to move, and the threaded seat drives the installation box to move on the base plate through the bearing plate, and the installation box can drive the pointer to move, and then the workpiece can be accurately positioned and processed through the value indicated by the pointer on the scale line, and then the workpiece can be adjusted to a suitable position, and the operation is simple and quick.

Description

A positioning fixture for high-precision machining

Technical Field

The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for high-precision processing.

Background technique

Positioning fixtures refer to special tools used to position and clamp workpieces, and are essential tools for modern manufacturing. They can ensure the position and posture accuracy of workpieces and improve processing accuracy and efficiency;

Positioning fixtures are widely used in various industries, especially in the field of industrial manufacturing. For example, automobile manufacturing, aerospace, machinery manufacturing and other fields cannot do without the use of positioning fixtures. It can greatly improve processing efficiency and processing accuracy, saving manpower and material costs;

In addition, positioning fixtures can also be used in the fields of medical device manufacturing, electronic and electrical appliance manufacturing, etc., and in the process of mechanical processing, positioning fixtures are usually used to position the workpiece so that the workpiece is in the correct processing position. The existing technology has the following problems:

In actual use, existing positioning fixtures for processing usually adopt manual methods to assist workpiece positioning. However, due to the subjective factors of manual operation, it is easy to cause inaccurate positioning of the workpiece, resulting in excessive positioning errors. At the same time, the structure of the positioning fixture is relatively simple, and it is difficult to position and clamp the workpiece quickly and efficiently. The workpiece is prone to shifting during processing, which reduces the precision and processing efficiency of the workpiece.

Utility Model Content

In order to solve the above technical problems, the technical solution adopted by the utility model is:

A positioning fixture for high-precision machining comprises a base plate, an adjusting mechanism is installed in the middle of the upper end of the base plate, a clamping mechanism is installed on the upper end of the adjusting mechanism, the left and right sides of the upper end of the base plate are base plates, an adjusting mechanism is installed in the middle of the upper end of the base plate, a clamping mechanism is installed on the upper end of the adjusting mechanism, first grooves are symmetrically opened on the left and right sides of the upper end of the base plate, a moving seat is slidably connected to the inner cavity of the first groove, scale lines are symmetrically fixedly connected to the two side ends of the base plate, and pointers are symmetrically installed at both ends of the clamping mechanism. Scale lines are symmetrically fixedly connected to the two side ends, and pointers are symmetrically installed at both ends of the clamping mechanism.

Preferably: the adjustment mechanism includes a second groove, a second groove is opened in the middle of the upper end of the base plate, the inner cavity of the second groove is rotatably connected with a screw rod, the outer surface of the screw rod is sleeved with a threaded seat with a thread connection, a bearing plate is fixedly installed on the upper end of the threaded seat, a handle is movably installed in the middle of the lower end of the base plate, the left and right inner walls of the second groove are symmetrically opened with limit grooves, and limit blocks are symmetrically fixedly installed on both ends of the left and right ends of the threaded seat.

Preferably, the lower end of the screw rod passes through the lower side of the second groove and is fixedly connected to the upper end of the handle.

Preferably, the limiting block is slidably connected to the limiting groove.

Preferably: the clamping mechanism includes an installation box, the lower end of the installation box is fixedly connected to the upper end of the carrying plate, a dual-axis motor is fixedly installed in the middle of the inner cavity of the installation box, screws are installed at both ends of the dual-axis motor, the outer surfaces of the two groups of screws are sleeved with threaded sleeves with threaded connections, guide grooves are symmetrically opened on both sides of the upper end of the installation box, a carrying rod is fixedly installed on the upper end of the threaded sleeve, a splint is fixedly installed on the top of the carrying rod, sliding grooves are symmetrically opened on both sides of the bottom of the inner cavity of the installation box, and a slider is fixedly installed on the lower end of the threaded sleeve.

Preferably, one end of the screw rod away from the dual-axis motor is rotatably connected to the inner wall of one side of the installation box, the bearing rod passes through the guide groove and extends out of the inner cavity of the installation box, and the bearing rod is slidably connected to the guide groove.

Preferably, the sliding block is slidably connected to the sliding groove, and an arc-shaped rubber anti-slip pad is fixedly connected to the inner wall of the clamping plate.

Preferably, the upper end of the movable seat is fixedly connected to the left and right sides of the lower end of the installation box, and the left and right ends of the installation box are fixedly connected to the bottom end of the pointer.

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

1. The utility model provides a positioning fixture for high-precision processing. Through the adjustment mechanism, the second groove, the screw rod, the threaded seat, the bearing plate, and the handle cooperate, the rotating screw rod drives the threaded seat to move, and the threaded seat drives the installation box to move on the bottom plate through the bearing plate. The installation box can drive the pointer to move, and then the workpiece can be accurately positioned and processed through the value indicated by the pointer on the scale line, and then the workpiece can be adjusted to a suitable position, and the operation is simple and quick.

2. The utility model provides a positioning fixture for high-precision processing. Through the cooperation of an installation box, a dual-axis motor, a screw, a threaded sleeve, a load-bearing rod, and a clamping plate, the rotating threaded sleeve can drive the load-bearing rod to move toward the middle, thereby relying on the load-bearing rod to drive two groups of clamping plates to move synchronously, and relying on the two groups of clamping plates, the workpiece can be clamped quickly with good clamping effect, so that the workpiece will not move during processing, thereby improving processing efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a positioning fixture for high-precision machining according to the present invention;

FIG2 is a schematic structural diagram of the adjustment mechanism of the utility model;

FIG3 is a schematic structural diagram of a detail diagram of an adjustment mechanism of the present invention;

FIG4 is a schematic structural diagram of the clamping mechanism of the present invention;

FIG. 5 is a schematic diagram of the structure of a top view of a positioning fixture for high-precision machining according to the present invention.

In the figure: 1. bottom plate; 2. adjustment mechanism; 3. clamping mechanism; 4. first groove; 5. moving seat; 6. scale line; 7. pointer; 21. second groove; 22. screw rod; 23. threaded seat; 24. bearing plate; 25. handle; 211. limit groove; 212. limit block; 31. installation box; 32. dual-axis motor; 33. screw rod; 34. threaded sleeve; 35. guide groove; 36. bearing rod; 37. splint; 38. slide groove; 39. slider.

Detailed ways

The present invention is further described in detail below in conjunction with the embodiments:

As shown in Figures 1-5, the utility model provides a positioning fixture for high-precision machining, including a base plate 1, an adjustment mechanism 2 is installed in the middle of the upper end of the base plate 1, a clamping mechanism 3 is installed on the upper end of the adjustment mechanism 2, first grooves 4 are symmetrically opened on the left and right sides of the upper end of the base plate 1, a moving seat 5 is slidably connected to the inner cavity of the first groove 4, scale lines 6 are symmetrically fixedly connected to the two side ends of the base plate 1, and pointers 7 are symmetrically installed at both ends of the clamping mechanism 3.

The upper end of the moving seat 5 is fixedly connected to the left and right sides of the lower end of the installation box 31 , and the left and right ends of the installation box 31 are fixedly connected to the bottom end of the pointer 7 .

Through the adjustment mechanism 2, by driving the pointer 7 to indicate the value on the scale line 6, the workpiece can be accurately positioned and processed, and then the workpiece can be adjusted to a suitable position. The operation is simple and quick. Through the clamping mechanism 3, the workpiece can be quickly clamped by relying on two groups of clamps 37, and the clamping effect is good, so that the workpiece will not move during processing, thereby improving the processing efficiency.

As shown in Figure 2-3, the adjustment mechanism 2 includes a second groove 21. The second groove 21 is opened in the middle of the upper end of the base plate 1. The inner cavity of the second groove 21 is rotatably connected to a screw rod 22. The outer surface of the screw rod 22 is sleeved with a threaded seat 23 with a threaded connection. A bearing plate 24 is fixedly installed on the upper end of the threaded seat 23. A handle 25 is movably installed in the middle of the lower end of the base plate 1. The left and right inner walls of the second groove 21 are symmetrically opened with limit grooves 211, and the left and right ends of the threaded seat 23 are symmetrically fixed with limit blocks 212.

The lower end of the screw rod 22 passes through the lower side of the second groove 21 and is fixedly connected to the upper end of the handle 25 .

The limiting block 212 is slidably connected to the limiting groove 211 .

When the threaded seat 23 moves forward and backward, the limiting block 212 can be driven to slide synchronously in the limiting groove 211 , thereby limiting the threaded seat 23 .

As shown in Figure 4, the clamping mechanism 3 includes an installation box 31, the lower end of the installation box 31 is fixedly connected to the upper end of the bearing plate 24, a dual-axis motor 32 is fixedly installed in the middle of the inner cavity of the installation box 31, screws 33 are installed at both ends of the dual-axis motor 32, and the outer surfaces of the two groups of screws 33 are sleeved with threaded sleeves 34 with threaded connections, guide grooves 35 are symmetrically opened on both sides of the upper end of the installation box 31, a bearing rod 36 is fixedly installed on the upper end of the threaded sleeve 34, a clamping plate 37 is fixedly installed on the top of the bearing rod 36, sliding grooves 38 are symmetrically opened on both sides of the bottom of the inner cavity of the installation box 31, and a slider 39 is fixedly installed on the lower end of the threaded sleeve 34.

One end of the screw rod 33 away from the dual-axis motor 32 is rotatably connected to the inner wall of one side of the installation box 31 , and the bearing rod 36 extends out of the inner cavity of the installation box 31 through the guide groove 35 , and the bearing rod 36 is slidably connected to the guide groove 35 .

The slide block 39 is slidably connected to the slide groove 38 , and an arc-shaped rubber anti-slip pad is fixedly connected to the inner wall of the clamping plate 37 .

When the installation box 31 is moved, the moving seat 5 can be driven to slide synchronously in the first groove 4, thereby improving the stability of the installation box 31 when moving. At the same time, when the two groups of threaded sleeves 34 are moved, the slider 39 will be driven to slide in the slide groove 38, thereby preventing the threaded sleeve 34 from rotating. The clamping effect of the clamping plate 37 can be improved by the rubber anti-slip pad.

The following is a detailed description of the working principle of this high-precision machining positioning fixture.

As shown in Fig. 1-5, when the positioning fixture for high-precision machining is used, the workpiece can be placed between the two groups of clamping plates 37, and then the double-axis motor 32 can be started, and the double-axis motor 32 drives the two groups of screw rods 33 to rotate, and the two groups of screw rods 33 drive the two groups of threaded sleeves 34 to move toward the middle, and the threaded sleeves 34 rely on the bearing rod 36 to drive the clamping plates 37 to move toward the middle under the guidance of the guide groove 35, so that the workpiece can be clamped and positioned at the top center position of the installation box 31 through the two groups of clamping plates 37, and the rubber anti-skid pads connected to the two groups of clamping plates 37 can improve the clamping effect of the clamping plates 37, so that the workpiece is not easy to move during machining, thereby improving the machining efficiency; When the workpiece needs to be positioned at a certain position for processing, the user can adjust the position of the installation box 31. The user can turn the handle 25 to drive the screw rod 22 to rotate. The rotating screw rod 22 drives the threaded seat 23 with thread connection to move back and forth, and the moving threaded seat 23 drives the installation box 31 to move synchronously through the supporting plate 24, and the installation box 31 drives the pointer 7 to move. At the same time, the user can observe the value indicated by the pointer 7 on the scale line 6, which is convenient for adjusting the workpiece to a suitable position. After positioning the workpiece to a suitable position, the user can stop turning the handle 25, thereby avoiding inaccurate positioning of the workpiece and excessive positioning error.

The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims (8)

1. A positioning fixture for high-precision machining, comprising a base plate (1), an adjusting mechanism (2) being installed in the middle of the upper end of the base plate (1), characterized in that: a clamping mechanism (3) is installed at the upper end of the adjusting mechanism (2), first grooves (4) are symmetrically provided on the left and right sides of the upper end of the base plate (1), a moving seat (5) is slidably connected to the inner cavity of the first groove (4), scale lines (6) are symmetrically fixedly connected to the two side ends of the base plate (1), and pointers (7) are symmetrically installed at both ends of the clamping mechanism (3). 2. A positioning fixture for high-precision machining according to claim 1, characterized in that: the adjustment mechanism (2) includes a second groove (21), a second groove (21) is opened in the middle of the upper end of the base plate (1), the inner cavity of the second groove (21) is rotatably connected with a screw rod (22), the outer surface of the screw rod (22) is sleeved with a threaded seat (23) connected by a thread, the upper end of the threaded seat (23) is fixedly installed with a bearing plate (24), and a handle (25) is movably installed in the middle of the lower end of the base plate (1), the left and right inner walls of the second groove (21) are symmetrically opened with limit grooves (211), and the left and right ends of the threaded seat (23) are symmetrically fixed with limit blocks (212). 3. A positioning fixture for high-precision machining according to claim 2, characterized in that the lower end of the screw rod (22) passes through the lower side of the second groove (21) and is fixedly connected to the upper end of the handle (25). 4. A positioning fixture for high-precision machining according to claim 3, characterized in that the limiting block (212) is slidably connected to the limiting groove (211). 5. A positioning fixture for high-precision machining according to claim 1, characterized in that: the clamping mechanism (3) comprises an installation box (31), the lower end of the installation box (31) is fixedly connected to the upper end of the bearing plate (24), a dual-axis motor (32) is fixedly installed in the middle of the inner cavity of the installation box (31), screws (33) are installed at both ends of the dual-axis motor (32), and the outer surfaces of the two groups of screws (33) are sleeved with threaded sleeves (34) connected by threads, guide grooves (35) are symmetrically opened on both sides of the upper end of the installation box (31), a bearing rod (36) is fixedly installed on the upper end of the threaded sleeve (34), a clamping plate (37) is fixedly installed on the top of the bearing rod (36), sliding grooves (38) are symmetrically opened on both sides of the bottom of the inner cavity of the installation box (31), and a slider (39) is fixedly installed on the lower end of the threaded sleeve (34). 6. A positioning fixture for high-precision machining according to claim 5, characterized in that: the end of the screw (33) away from the dual-axis motor (32) is rotatably connected to the inner wall of one side of the installation box (31), the bearing rod (36) passes through the guide groove (35) and extends out of the inner cavity of the installation box (31), and the bearing rod (36) is slidably connected to the guide groove (35). 7. A positioning fixture for high-precision machining according to claim 6, characterized in that the slider (39) is slidably connected to the slide groove (38), and an arc-shaped rubber anti-slip pad is fixedly connected to the inner wall of the clamping plate (37). 8. A positioning fixture for high-precision machining according to claim 1, characterized in that the upper end of the movable seat (5) is fixedly connected to the left and right sides of the lower end of the installation box (31), and the left and right ends of the installation box (31) are fixedly connected to the bottom end of the pointer (7).