An eccentric machining clamping fixture

Abstract

This utility model provides an eccentric machining clamping fixture, including a disc; the disc has a central hole; it also includes a positioning seat, a correction component, a left limit stop, and a gripper assembly; the positioning seat is fixed on the right side of the disc; the positioning seat has a positioning hole at its center for positioning the workpiece; the positioning seat has a correction component mounting groove below the positioning hole; the correction component includes a slide, a correction slider, a spring, and an adjusting shaft; the slide is fixed at the position of the correction component mounting groove; the correction slider is slidably connected to the slide within the slide; the upper end of the correction slider has a correction protrusion extending into the positioning hole; the spring is installed between the slide and the correction slider to apply upward elastic force to the correction slider; the adjusting shaft is installed on the positioning seat and its end is connected to the correction slider to control the downward movement of the correction slider; the left limit stop is located on the left side of the positioning hole and its two ends are fixed on the positioning seat; the gripper assembly is installed on the upper part of the positioning seat to clamp and fix the workpiece in the mounting hole.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixture technology, and in particular to an eccentric machining clamping fixture. Background Technology

[0002] There is a shaft-type workpiece with an eccentric structure that needs to be turned. Therefore, when clamping this workpiece, it is necessary to improve the positional accuracy of the clamping. Due to the machining requirements, this workpiece needs to be clamped using a disc-type structure in this machining process. However, the current disc-type structure cannot meet the high-precision clamping requirements of this workpiece, so it needs to be improved. Utility Model Content

[0003] The purpose of this invention is to provide an eccentric machining clamping fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An eccentric machining clamping fixture includes a disc; the disc has a central hole; it also includes a positioning seat, a correction component, a left limit stop, and a gripper assembly; the positioning seat is fixed to the right side of the disc; the positioning seat has a positioning hole at its center for positioning the workpiece; the positioning seat has a correction component mounting groove below the positioning hole; the correction component includes a slide, a correction slider, a spring, and an adjusting shaft; the slide is fixed at the position of the correction component mounting groove; the correction slider is slidably connected to the slide within the slide; the upper end of the correction slider has a correction protrusion extending into the positioning hole; the spring is installed between the slide and the correction slider to apply an upward spring force to the correction slider; the adjusting shaft is installed on the positioning seat and its end is connected to the correction slider to control the downward movement of the correction slider; the left limit stop is located on the left side of the positioning hole and its two ends are fixed to the positioning seat; the gripper assembly is installed on the upper part of the positioning seat to clamp and fix the workpiece in the mounting hole.

[0006] In a further description of this utility model, the front side of the correction slider is provided with an adjustment groove; the adjustment shaft is rotatably connected to the positioning seat and its rear end extends into the adjustment groove; the rear end of the adjustment shaft is provided with a top rod arranged in the radial direction.

[0007] In a further description of this utility model, the adjustment groove is a rectangular groove.

[0008] In a further description of this utility model, the front end of the adjusting shaft is a square column structure.

[0009] Further description of the present invention: the gripper assembly includes a left gripper, a right gripper, and a screw; the left gripper and the right gripper are symmetrically arranged front and back and respectively straddle the upper part of the positioning seat; the lower ends of the left gripper and the right gripper are rotatably connected to the positioning seat through a mounting shaft; the screw is connected to the upper ends of the left gripper and the right gripper.

[0010] In a further description of this utility model, the bottom surface of the positioning hole is a plane, the lower front part and the lower rear part are outwardly inclined slopes, and the upper part is an arc surface structure.

[0011] The beneficial effects of this utility model are as follows:

[0012] This design controls the downward movement of the correction slider via an adjusting shaft, causing the correction slider to retract into the slide block, leaving space for the workpiece to be loaded. The workpiece is loaded into the positioning hole from the right side, and the left end of the workpiece is limited by the left limit block. The bottom of the workpiece has a correction groove. After the adjusting shaft is released, the spring contacts the correction slider and moves it upward. The correction protrusion at the upper end of the correction slider abuts against the correction groove of the workpiece, realizing the adjustment of the workpiece angle. Then, the gripper assembly presses the workpiece into the positioning hole, achieving high-precision positioning of the workpiece. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention viewed from the left.

[0014] Figure 2 This is a right-view overall structural diagram of this utility model;

[0015] Figure 3 This is a structural diagram of the positioning seat and correction assembly of this utility model;

[0016] Figure 4 This is a structural diagram of the calibration component of this utility model;

[0017] Figure 5 This is a structural diagram of the workpiece clamped by this utility model;

[0018] Figure 6 This is a left-view structural diagram of the workpiece clamping method of this utility model;

[0019] Figure 7 This is a right-view structural diagram of the workpiece clamping method of this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] like Figure 1-7As shown, an eccentric machining clamping fixture includes a disc 1; the disc 1 has a center hole 11; it also includes a positioning seat 2, a correction component 3, a left limit stop 4, and a gripper assembly 5; the positioning seat 2 is fixed to the right side of the disc 1; the positioning seat 2 has a positioning hole 21 at its center for positioning the workpiece 100; the positioning seat 2 has a correction component mounting groove 22 below the positioning hole 21; the correction component 3 includes a slide 31, a correction slider 32, a spring 33, and an adjusting shaft 34; the slide 31 is fixed at the position of the correction component mounting groove 22; the correction slider 32 is slidably connected to the slide 31; the upper end of the correction slider 32 has a correction protrusion 321 extending into the positioning hole 21; the spring 33 is installed between the slide 31 and the correction slider 32 to apply an upward spring force to the correction slider 32; the adjusting shaft 34 is installed on the positioning seat 2 and its end is connected to the correction slider 32 for... The adjustment slider 32 is controlled to move downwards; the left limiting block 4 is located on the left side of the positioning hole 21 and its two ends are fixed on the positioning seat 2; the gripper assembly 5 is installed on the upper part of the positioning seat 2 and is used to clamp and fix the workpiece 100 in the mounting hole; in this design, the adjustment shaft 34 controls the adjustment slider 32 to move downwards, so that the adjustment slider 32 retracts into the slide seat 31, leaving a position for the workpiece 100 to be loaded. The workpiece 100 is loaded into the positioning hole 21 from the right side. The left end of the workpiece 100 is limited by the left limiting block 4. The bottom of the workpiece 100 has a correction groove 101. The top surface of the correction groove 101 is flat. After the adjustment shaft 34 is released, the spring 33 touches the adjustment slider 32 and moves upwards. The correction protrusion 321 at the upper end of the adjustment slider 32 abuts against the correction groove 101 of the workpiece 100 to adjust the angle of the workpiece 100. Then, the gripper assembly 5 presses the workpiece 100 into the positioning hole 21 to achieve high-precision positioning of the workpiece 100.

[0022] The front side of the correction slider 32 is provided with an adjustment groove 322; the adjustment shaft 34 is rotatably connected to the positioning seat 2 and its rear end extends into the adjustment groove 322; the rear end of the adjustment shaft 34 is provided with a push rod 341 arranged in the radial direction. Rotating the adjustment shaft 34 causes the end of the push rod 341 to press on the adjustment groove 322 and drive the correction slider 32 to move downward. After the correction slider 32 descends, space is left for the workpiece 100 to be inserted into the positioning hole 21.

[0023] The adjustment slot 322 in this design is a rectangular slot.

[0024] The front end of the adjusting shaft 34 is a square column 342 structure. A tool with a square groove is inserted into the square column to drive the adjusting shaft 34 to rotate, which is convenient to operate.

[0025] The gripper assembly 5 includes a left gripper 51, a right gripper 52, and a screw 53. The left gripper 51 and the right gripper 52 are symmetrically arranged front and back and are respectively straddling the upper part of the positioning seat 2. The lower ends of the left gripper 51 and the right gripper 52 are rotatably connected to the positioning seat 2 through the mounting shaft 501. The screw 53 is connected to the upper ends of the left gripper 51 and the right gripper 52. The head of the screw 53 abuts against the left side of the left gripper 51, and the tail passes through the left gripper 51 and is threadedly connected to the right gripper 52. After loosening the screw 53, the left gripper 51 and the right gripper 52 release the workpiece 100. Tightening the screw 53 locks the workpiece 100 in the positioning hole 21.

[0026] The bottom surface of the positioning hole 21 is a plane 211, the lower front and lower rear parts are outwardly inclined slopes 212, and the upper part is an arc surface 213 structure. This structure improves the positioning effect of shaft-type products.

[0027] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. An eccentric machining clamping tool comprising a disc; the disc has a center hole in the center; characterized in that: It also includes a positioning seat, a correction component, a left limit stop, and a gripper assembly; the positioning seat is fixed to the right side of the disc; the positioning seat has a positioning hole at its center for positioning the workpiece; the positioning seat has a correction component mounting slot below the positioning hole; the correction component includes a slide, a correction slider, a spring, and an adjusting shaft; the slide is fixed at the position of the correction component mounting slot; the correction slider is slidably connected to the slide within the slide; the upper end of the correction slider has a correction protrusion extending into the positioning hole; the spring is installed between the slide and the correction slider to apply upward elastic force to the correction slider; the adjusting shaft is installed on the positioning seat and its end is connected to the correction slider to control the downward movement of the correction slider; the left limit stop is located on the left side of the positioning hole and its two ends are fixed to the positioning seat; the gripper assembly is installed on the upper part of the positioning seat to clamp and fix the workpiece in the mounting hole.

2. The eccentric machining clamping tool according to claim 1, characterized in that: The front side of the correction slider is provided with an adjustment groove; the adjustment shaft is rotatably connected to the positioning seat and its rear end extends into the adjustment groove; the rear end of the adjustment shaft is provided with a top rod arranged in the radial direction.

3. The eccentric machining clamping tool according to claim 2, characterized in that: The adjustment groove is a rectangular groove.

4. The eccentric machining clamping tool of claim 2, wherein: The front end of the adjustment shaft is a square column structure.

5. The eccentric machining clamping tool of claim 1, wherein: The gripper assembly includes a left gripper, a right gripper, and a screw; the left and right grippers are symmetrically arranged front and back and straddle the upper part of the positioning seat; the lower ends of the left and right grippers are rotatably connected to the positioning seat via a mounting shaft; the screw is connected to the upper ends of the left and right grippers.

6. The eccentric machining clamping tool of claim 1, wherein: The bottom surface of the positioning hole is a plane, the lower front and lower rear parts are outwardly inclined slopes, and the upper part is an arc surface structure.

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