Clamp for plane grinding of shaft workpieces

Abstract

The utility model relates to a shaft type workpiece plane grinding clamp which comprises a bottom plate, a base plate is arranged on the bottom plate, a plurality of positioning grooves which are used for containing shaft type workpieces and are arranged at equal intervals are formed in the top face of the base plate in the length direction, and the axis direction of the positioning grooves is perpendicular to the length direction of the base plate. And a pressing block capable of covering all the positioning grooves is arranged above the chassis, can move up and down and is locked at a certain height. The utility model has the characteristics that the same position of the shaft workpiece can be subjected to plane grinding batch processing at the same time, so that the precision of the shaft workpiece in the same batch is kept stable, the processing consistency of the shaft workpiece in the same batch is ensured, the processing efficiency is improved, and the like.

Description

Technical Field

[0001] The utility model relates to a fixture for surface grinding of shaft workpieces, belonging to the technical field of shaft workpiece processing. Background Art

[0002] Shaft workpieces have a columnar structure and are usually assembled and connected with other components. At this time, it is necessary to grind a flat surface on the side wall of the shaft workpiece to limit the movement of the shaft workpiece or cooperate with other components to ensure the stability of the structure.

[0003] A Chinese application document with publication number CN114367922A discloses a hydraulic clamp for grinding double planes of a stepped shaft, comprising a workbench, a clamp body mounted on the workbench, and a fixed block and a movable block. The fixed block is fixedly arranged next to a positioning reference plane on the top of the clamp body, and the movable block has the freedom to move up and down in a direction perpendicular to the positioning reference plane. The side surfaces of the fixed block and the movable block that are arranged opposite to each other are processed into an inclined shape, so that a positioning gap that can fix the stepped shaft is formed between the fixed block and the movable block.

[0004] There is usually a large demand for shaft workpieces, and there is also a large demand for surface grinding of shaft workpieces. During the production process, if a single shaft is surface ground at a time, the efficiency is low, and the production precision of the same batch of shaft workpieces is prone to deviation, affecting the consistency of batch product production. Utility Model Content

[0005] The utility model aims to provide a fixture for surface grinding of shaft workpieces, which solves the problems of easy deviation of precision and influence on product consistency in the prior art.

[0006] The above-mentioned technical purpose of the utility model is mainly solved through the following technical solutions: a fixture for surface grinding of shaft workpieces, including a bottom plate, a chassis is provided on the bottom plate, and a plurality of positioning grooves for placing shaft workpieces and arranged at equal intervals are provided on the top surface of the chassis along the length direction, the axial direction of the positioning groove is perpendicular to the length direction of the chassis, and a pressure block that can cover all the positioning grooves is provided above the chassis, and the pressure block can move up and down and be locked at a certain height; the arrangement of the above-mentioned chassis and positioning grooves facilitates the arrangement and positioning of multiple shaft workpieces, so that multiple shaft workpieces are stabilized in the positioning grooves by the pressure blocks, and the axial position can be positioned by the positioning grooves, so as to facilitate the surface grinding treatment of the same position of the shaft workpieces at the same time, thereby ensuring that the precision of the same batch of shaft workpieces remains stable, and ensuring the processing consistency of the same batch of shaft workpieces, thereby improving the processing efficiency.

[0007] Preferably, the openings at both ends of the positioning groove are flush with the side walls of the chassis, and the positioning groove is a V-shaped groove; the structural setting in which the openings at both ends of the positioning groove are flush with the side walls of the chassis makes the positioning groove form a through-grooved structure, which is convenient for placing shaft workpieces and moving the axial position of the shaft workpiece, so as to facilitate surface grinding of different positions of the shaft workpiece, and the positioning groove is a V-shaped groove, which can adapt to shaft workpieces of different diameters and increase applicability.

[0008] Preferably, one end of the positioning groove is provided with a limiting plate abutting against the opening of the positioning groove, and the bottom of the limiting plate is connected to a padding plate fixedly connected to the bottom plate; the setting of the above-mentioned limiting plate can limit the same end of multiple shaft workpieces at the same time, so that the same end of multiple shaft workpieces can remain flush to ensure the consistency of the surface grinding position and avoid deviation, and the padding plate is set to increase the height of the limiting plate to adapt to the height of the shaft workpiece.

[0009] Preferably, a rubber pad is provided on the side of the bottom of the pressing block that contacts the shaft workpiece, and a screw rod rotatably connected to the chassis is passed through the middle of the pressing block, and the screw rod is threadedly connected to the pressing block; the provision of the above-mentioned rubber pad can increase the softness of the pressing block when in contact with the shaft workpiece, increase the contact area between the pressing block and the shaft workpiece, press the shaft workpiece more firmly, reduce the wear on the shaft workpiece, and at the same time increase the friction force and enhance the stability of the shaft workpiece.

[0010] Preferably, the top end of the screw extends above the pressing block, a handle is provided on the top side wall of the screw, and the bottom end of the screw is connected to the chassis through a bearing; the top end of the screw is located above the pressing block and a handle is provided to facilitate manual grasping of the handle and turning of the screw, so that the screw drives the pressing block to be raised and lowered through the thread, so as to adjust the height of the pressing block and achieve the tightening and loosening of the shaft workpiece.

[0011] Preferably, both ends of the pressing block are provided with guide grooves vertically penetrating therethrough, and the chassis is provided with guide rods vertically penetrating the guide grooves; the coordinated arrangement of the guide grooves and the guide rods can cooperate with the screw rod to position the pressing block, thereby ensuring that the position of the pressing block in the horizontal direction is stable, and can assist in supporting the pressing block to move up and down, so that the pressing block is more precise and stable when adjusting the height.

[0012] Preferably, a plurality of top blocks are provided on the raising plate corresponding to the outer side of the limiting plate, and a locking bolt threadedly connected to the top block is passed through the top block, and the end of the locking bolt abuts against the outer side of the limiting plate; the arrangement of the top block and the locking bolt allows the locking bolt to be tightened on the top block by rotation, so as to lock the limiting plate by the end of the locking bolt, thereby avoiding loosening of the limiting plate when abutting against the shaft workpiece, reinforcing the limiting plate, strengthening the limiting force of the limiting plate on the end of the shaft workpiece, and avoiding displacement of the limiting plate under force.

[0013] Preferably, a fixed shaft connected to the raising plate is passed through the middle of the limiting plate, and a strip groove arranged along the axial direction of the locking bolt is provided on the limiting plate corresponding to the position of the top block, and a limiting rod connected to the raising plate is provided in the strip groove; the fixed shaft and the limiting rod cooperate with each other to position the limiting plate, so that the limiting plate is positioned at three points through the strip groove and the fixed shaft, thereby ensuring the accuracy and stability of the position of the limiting plate.

[0014] Therefore, the utility model has the characteristics of being able to perform batch surface grinding on the same position of shaft workpieces at the same time, thereby ensuring that the precision of the same batch of shaft workpieces remains stable, ensuring the processing consistency of the same batch of shaft workpieces, and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of part of the structure. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1-2 As shown, a fixture for surface grinding of shaft workpieces includes a base plate 1, a chassis 2 is provided on the base plate 1, a plurality of positioning grooves 21 for placing shaft workpieces and arranged at equal intervals are provided on the top surface of the chassis 2 along the length direction, the axial direction of the positioning groove 21 is perpendicular to the length direction of the chassis 2, a pressing block 22 that can cover all the positioning grooves 21 is provided above the chassis 2, the pressing block 22 can move up and down and be locked at a certain height, the openings at both ends of the positioning groove 21 are flush with the side walls of the chassis 2, and the positioning groove 21 is a V-shaped groove.

[0019] The above-mentioned chassis is fixed on the bottom plate, and the positioning grooves on the chassis are evenly spaced along the length direction of the chassis. The number of positioning grooves is designed according to actual needs, and the axial direction of all positioning grooves is perpendicular to the distribution direction of all positioning grooves. The above-mentioned pressing block is arranged above the positioning groove. After the shaft workpiece is placed in the positioning groove, the pressing block moves down to press the shaft workpiece, and the exposed part of the shaft workpiece can be surface ground.

[0020] like Figure 2As shown, a rubber pad 221 is provided on the side of the bottom of the pressing block 22 that contacts the shaft workpiece, a screw 25 rotatably connected to the chassis 2 is penetrated through the middle of the pressing block 22, the screw 25 is threadedly connected to the pressing block 22, the top of the screw 25 extends to the top of the pressing block 22, a handle 26 is provided on the top side wall of the screw 25, the bottom end of the screw 25 is connected to the chassis 2 through a bearing, guide grooves 222 are vertically penetrated at both ends of the pressing block 22, and a guide rod 27 vertically penetrated in the guide groove 222 is provided on the chassis 2.

[0021] The above-mentioned rubber pad is a soft pad made of rubber. When the pressure block is pressed on the shaft workpiece, the rubber pad maintains contact with the side wall of the shaft workpiece. When pressing the shaft workpiece, you need to hold the handle first and turn the screw through the handle. The screw rotates on the chassis through the bearing and drives the pressure block to move down through the thread until the rubber pad at the bottom of the pressure block presses the shaft workpiece. Stop turning the screw, and both ends of the pressure block move down synchronously along the guide rod in the guide groove to achieve the pressing of the shaft workpieces in all positioning grooves. When the shaft workpiece needs to be loosened, just turn the screw in the opposite direction.

[0022] like Figure 1-2 As shown, one end of the positioning groove 21 is provided with a limiting plate 23 that abuts against the opening of the positioning groove 21, and the bottom of the limiting plate 23 is connected to a padding plate 24 fixedly connected to the bottom plate 1, and a plurality of top blocks 241 are provided on the padding plate 24 corresponding to the outer side of the limiting plate 23, and locking bolts 242 threadedly connected to the top blocks 241 are passed through the top blocks 241, and the ends of the locking bolts 242 abut against the outer side of the limiting plate 23, and a fixed shaft 243 connected to the padding plate 24 is passed through the middle of the limiting plate 23, and a strip groove 231 arranged along the axial direction of the locking bolt 242 is provided on the limiting plate 23 corresponding to the location of the top blocks 241, and a limiting rod 244 connected to the padding plate 24 is provided in the strip groove 231.

[0023] The above-mentioned raising plate is fixed on the base plate, and the limiting plate is fixed on the raising plate, and one side of the raising plate abuts against the ends of the shaft workpieces in all the positioning grooves, aligns the same end of the shaft workpieces, and limits the movement of the same end of the shaft workpieces, so that the same end of the shaft workpieces remains flush, so as to ensure the consistency of the surface grinding position of the shaft workpieces, the fixed shaft on the raising plate is plugged into and matched with the limiting plate, the limiting rod on the raising plate is located in the strip groove, the outer wall of the limiting rod abuts against the inner wall of the strip groove, the limiting rod forms a limit to the limiting plate through the strip groove, and the fixed shaft limits the middle part of the limiting plate, so as to ensure that the limiting plate can maintain abutment against the same end of all shaft workpieces, and the locking bolt is tightened on the top block, and the end of the locking bolt abuts against the side wall of the limiting plate, and multiple locking bolts squeeze and fix the limiting plate at the same time, so that the limiting plate remains stable as a whole to avoid loosening or displacement.

Claims

1. A fixture for surface grinding of shaft workpieces, characterized in that: The invention comprises a bottom plate (1), a chassis (2) being arranged on the bottom plate (1), a top surface of the chassis (2) being provided with a plurality of equidistantly spaced positioning grooves (21) for placing shaft-type workpieces along the length direction, the axial direction of the positioning grooves (21) being perpendicular to the length direction of the chassis (2), a pressing block (22) being provided above the chassis (2) and being capable of covering all the positioning grooves (21), the pressing block (22) being capable of moving up and down and being locked at a certain height.

2. The fixture for surface grinding of shaft workpieces according to claim 1, characterized in that: The openings at both ends of the positioning groove (21) are flush with the side wall of the chassis (2), and the positioning groove (21) is a V-shaped groove.

3. The fixture for surface grinding of shaft workpieces according to claim 1 or 2, characterized in that: One end of the positioning groove (21) is provided with a limiting plate (23) abutting against the opening of the positioning groove (21), and the bottom of the limiting plate (23) is connected to a padding plate (24) fixedly connected to the bottom plate (1).

4. The fixture for surface grinding of shaft workpieces according to claim 1, characterized in that: A rubber pad (221) is provided on the bottom side of the pressing block (22) that contacts the shaft workpiece, and a screw rod (25) rotatably connected to the chassis (2) is passed through the middle of the pressing block (22), and the screw rod (25) is threadedly connected to the pressing block (22).

5. The fixture for surface grinding of shaft workpieces according to claim 4, characterized in that: The top end of the screw rod (25) extends to above the pressing block (22), a handle (26) is provided on the top side wall of the screw rod (25), and the bottom end of the screw rod (25) is connected to the chassis (2) via a bearing.

6. The fixture for surface grinding of shaft workpieces according to claim 1, characterized in that: Both ends of the pressing block (22) are provided with guide grooves (222) extending vertically therethrough, and the chassis (2) is provided with guide rods (27) extending vertically therethrough in the guide grooves (222).

7. The fixture for surface grinding of shaft workpieces according to claim 3, characterized in that: A plurality of top blocks (241) are provided on the raised plate (24) corresponding to the outer side of the limiting plate (23), and locking bolts (242) threadedly connected to the top blocks (241) are passed through the top blocks (241), and the ends of the locking bolts (242) abut against the outer side of the limiting plate (23).

8. The fixture for surface grinding of shaft workpieces according to claim 7, characterized in that: A fixed shaft (243) connected to the padding plate (24) is passed through the middle of the limiting plate (23); a strip groove (231) arranged along the axial direction of the locking bolt (242) is provided on the limiting plate (23) at a position corresponding to the position of the top block (241); a limiting rod (244) connected to the padding plate (24) is provided in the strip groove (231).

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