Positioning mechanism facilitating shaft workpiece machining

Abstract

The positioning mechanism comprises a bottom plate, a double-thread screw rod is rotatably installed on the upper end face of the bottom plate through a moving groove, a first motor connected with the double-thread screw rod is fixedly installed on the outer wall of the bottom plate, two moving plates are installed on the outer wall of the double-thread screw rod through limiting mechanisms in a threaded mode, and the two moving plates are fixedly installed on the outer wall of the double-thread screw rod. Connecting shafts are rotationally installed on the inner walls of the two moving plates in a penetrating mode, clamping frames are fixedly installed at the ends of the two connecting shafts, and clamping blocks are fixedly connected to the inner walls of the two sides of the two clamping frames through telescopic mechanisms. According to the clamping device, the transmission shaft, the connecting sleeves, the belt wheels and other assemblies are arranged, the transmission shaft can drive the two connecting sleeves to rotate, the two connecting sleeves drive the connecting shafts on the same side to rotate through the two belt wheels connected with the belt, and therefore the two connecting shafts can drive the clamping frames on the same side to rotate; therefore, the clamped and fixed shaft workpiece can be driven to rotate, and the convenience of the shaft workpiece during machining is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to shaft workpiece machining technical field especially, relates to a positioning mechanism convenient for shaft workpiece machining. BACKGROUND

[0002] Shaft workpiece is the rotating body part in machine, its length is usually greater than diameter, is composed of the outer cylindrical surface of concentric shaft, conical surface, inner hole and thread and corresponding end face, and the main functions of shaft workpiece include supporting transmission member, transmitting torque or motion, bearing load and having certain rotation accuracy.

[0003] Because of the important role of shaft workpiece in machine, its machining is to ensure that it can be positioned and fixed correctly, meets the requirements of shaft machining and assembly, and the shaft workpiece needs to be clamped and fixed by the positioning mechanism during machining, in the prior art, when the positioning mechanism clamps and fixes the shaft workpiece, the shaft workpiece cannot be rotated freely, which leads to limitations in the machining process, the shaft workpiece cannot be rotated according to the machining requirements, and the practicability is insufficient, therefore, a positioning mechanism convenient for shaft workpiece machining needs to be redesigned for the above problems. SUMMARY

[0004] The utility model provides a positioning mechanism convenient for shaft workpiece machining to solve the prior art existing shortcoming.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A positioning mechanism convenient for shaft workpiece machining, including the bottom plate, the bottom plate upper end face is rotationally installed with double -end screw through the movement groove, the bottom plate outer wall is fixedly installed with the first motor connected with double -end screw, the double -end screw outer wall is screw -threaded with two movable plates through the limiting mechanism, the movable plate inner wall is rotationally installed with the link shaft, the link shaft end is fixedly installed with the clamping frame, the clamping frame both sides inner wall is fixedly connected with the clamping block through the telescopic mechanism, the movable plate inner wall is rotationally installed with the connecting sleeve, the connecting sleeve and the link shaft outer wall are fixedly installed with the pulley, the pulley of same side is connected transmission through the belt, the bottom plate upper end face is rotationally installed with the transmission shaft through the support mechanism, the transmission shaft slidingly penetrates two connecting sleeves.

[0007] Preferably, the limiting mechanism includes a limiting rod fixedly installed in the movement groove, and the limiting rod slidingly penetrates the two movable plates.

[0008] Preferably, the telescopic mechanism includes a gas cylinder fixedly installed on the inner wall of the clamping frame, and the gas cylinder is fixedly connected with the outer wall of the clamping block.

[0009] Preferably, the support mechanism includes two support plates fixedly mounted on the upper end surface of the base plate, the transmission shaft is rotatably mounted between the two support plates, and a second motor connected to the transmission shaft is fixedly mounted on the outer wall of one of the support plates.

[0010] Preferably, a clamping groove is formed on the inner wall of each clamping block, and each clamping groove has an arc-shaped inner wall.

[0011] Preferably, an anti-slip pad is fixedly installed on the inner wall of each clamping groove, and each anti-slip pad is made of rubber.

[0012] Preferably, two stabilizing rods are fixedly mounted on the outer wall of each clamping block, and each of the stabilizing rods slides through the clamping frame.

[0013] Preferably, the transmission shaft has a prismatic outer wall, and the two connecting sleeves both have a prismatic inner wall.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting up components such as a transmission shaft, a connecting sleeve and a pulley, the transmission shaft can drive the two connecting sleeves to rotate, and the two connecting sleeves then drive the connecting shaft on the same side to rotate through two pulleys connected by belts. As a result, the two connecting shafts can respectively drive the clamping frame on the same side to rotate, thereby driving the clamped and fixed shaft workpiece to rotate, thereby increasing the convenience of machining the shaft workpiece.

[0016] 2. By setting up components such as a double-headed screw, a limit rod and a movable plate, the double-headed screw can drive the two movable plates to move by cooperating with the limit rod, and the two movable plates then drive the clamping frames on the same side to move respectively. In this way, the distance between the two clamping frames can be adjusted according to the length of the shaft workpiece, so as to clamp and fix shaft workpieces of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a positioning mechanism proposed by the present invention for facilitating the machining of shaft workpieces;

[0018] Figure 2 for Figure 1 Schematic diagram of the vertical cross-section structure;

[0019] Figure 3 This is a side structural diagram of a positioning mechanism proposed by the present invention for facilitating the machining of shaft-type workpieces;

[0020] Figure 4 This is a schematic diagram of a top view of a positioning mechanism proposed by the present invention for facilitating the machining of shaft workpieces;

[0021] Figure 5 for Figure 4Schematic diagram of the cross-sectional structure;

[0022] Figure 6 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0023] Figure 7 for Figure 2 A magnified schematic diagram of the structure at point B in FIG.

[0024] In the figure: 1 base plate, 2 double-headed screw, 3 first motor, 4 limit rod, 5 movable plate, 6 connecting shaft, 7 clamping frame, 8 cylinder, 9 clamping block, 10 anti-slip pad, 11 stabilizing rod, 12 connecting sleeve, 13 pulley, 14 support plate, 15 transmission shaft, 16 second motor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figures 1-7 The two movable plates 5 are threadably mounted on the outer walls of the two movable plates 5, and the two movable plates 5 can only move axially along the outer walls of the two movable plates 5. The inner walls of the two movable plates 5 are both rotatably mounted with a connecting shaft 6, and the ends of the two connecting shafts 6 are fixedly mounted with a clamping frame 7. The inner walls of the two clamping frames 7 are fixedly connected with clamping blocks 9 through a telescopic mechanism. The lifting and retracting mechanism includes a cylinder 8 fixedly mounted on the inner wall of the clamping frame 7, and the telescopic end of the cylinder 8 is fixedly connected to the outer wall of the clamping block 9.

[0027] A clamping groove is provided on the inner wall of each clamping block 9, and each clamping groove has an arc-shaped inner wall. An anti-slip pad 10 is fixedly installed on the inner wall of each clamping groove, and each anti-slip pad 10 is made of rubber. Two stabilizing bars 11 are fixedly installed on the outer wall of each clamping block 9, and each stabilizing bar 11 slides through the clamping frame 7. A connecting sleeve 12 is rotatably installed on the inner walls of the two movable plates 5. Pulleys 13 are fixedly installed on the two connecting sleeves 12 and the outer walls of the two connecting shafts 6. The two pulleys 13 on the same side are connected and driven by belts.

[0028] The bottom plate 1 is rotatably installed with a transmission shaft 15 at the upper end through a supporting mechanism, the supporting mechanism comprises two supporting plates 14 fixedly installed on the upper end of the bottom plate 1, the transmission shaft 15 is rotatably installed between the two supporting plates 14, one of the two supporting plates 14 is fixedly installed with a second motor 16 connected with the transmission shaft 15, the transmission shaft 15 is slidably penetrated through the two connecting sleeves 12, the transmission shaft 15 is of a prismatic outer wall, and the two connecting sleeves 12 are both of prismatic inner walls.

[0029] When the utility model is used, the first motor 3 can drive the double-head screw rod 2 to rotate, the double-head screw rod 2 can drive the two moving plates 5 to move through cooperation with the limiting rods 4, the two moving plates 5 can drive the clamping frames 7 on the same side to move respectively, the spacing between the two clamping frames 7 can be adjusted according to the length of the shaft workpiece, so that the shaft workpiece of different lengths is clamped and fixed, when the shaft workpiece is positioned, the shaft workpiece is placed between the two clamping blocks 9 on the two sides, then the cylinders 8 on the two sides can move the clamping blocks 9 on the same side respectively, so that the two clamping blocks 9 on the same side are close to each other, and the antiskid pads 10 in the clamping grooves clamp and fix the shaft workpiece, when the cylinders 8 drive the clamping blocks 9 to move, the clamping blocks 9 can drive the two stabilizing rods 11 to slide in the inner walls of the clamping frames 7, so that the stability of the clamping blocks 9 when moving is increased, and the two clamping blocks 9 on the same side can clamp and fix the shaft workpiece of different diameters under the expansion and contraction of the cylinders 8.

[0030] The two moving plates 5 can also drive the connecting sleeves 12 on the same side to slide on the outer wall of the transmission shaft 15 during the moving process, when the shaft workpiece needs to be rotated during the machining process, the second motor 16 can drive the transmission shaft 15 to rotate, the transmission shaft 15 drives the two connecting sleeves 12 to rotate, the two connecting sleeves 12 drive the clamping frames 7 on the same side to rotate through the two pulley wheels 13 connected by the belts respectively, so that the two clamping frames 7 on the same side are driven to rotate, so that the shaft workpiece clamped and fixed can be rotated, so that the convenience of the shaft workpiece during machining is increased.

[0031] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A positioning mechanism for facilitating the machining of shaft workpieces, comprising a base plate (1), characterized in that: The upper end surface of the base plate (1) is rotatably mounted with a double-headed screw (2) through a movable groove, the outer wall of the base plate (1) is fixedly mounted with a first motor (3) connected to the double-headed screw (2), the outer wall of the double-headed screw (2) is threadedly mounted with two movable plates (5) through a limiting mechanism, the inner walls of the two movable plates (5) are both rotatably penetrated by a connecting shaft (6), the ends of the two connecting shafts (6) are both fixedly mounted with a clamping frame (7), the inner walls of both sides of the two clamping frames (7) are both fixedly connected with a clamping block (9) through a telescopic mechanism, the inner walls of the two movable plates (5) are both rotatably mounted with a connecting sleeve (12), the two connecting sleeves (12) and the outer walls of the two connecting shafts (6) are both fixedly mounted with a pulley (13), the two pulleys (13) on the same side are connected and driven by a belt, the upper end surface of the base plate (1) is rotatably mounted with a transmission shaft (15) through a supporting mechanism, and the transmission shaft (15) slides through the two connecting sleeves (12).

2. A positioning mechanism for facilitating machining of shaft workpieces according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (4) fixedly mounted inside the movable groove, and the limiting rod (4) slides through the two movable plates (5).

3. A positioning mechanism for facilitating machining of shaft workpieces according to claim 2, characterized in that: The telescopic mechanism comprises a cylinder (8) fixedly mounted on the inner wall of the clamping frame (7), and the telescopic end of the cylinder (8) is fixedly connected to the outer wall of the clamping block (9).

4. A positioning mechanism for facilitating machining of shaft workpieces according to claim 3, characterized in that: The support mechanism comprises two support plates (14) fixedly mounted on the upper end surface of the base plate (1); the transmission shaft (15) is rotatably mounted between the two support plates (14); and a second motor (16) connected to the transmission shaft (15) is fixedly mounted on the outer wall of one of the support plates (14).

5. A positioning mechanism for facilitating machining of shaft workpieces according to claim 4, characterized in that: The inner wall of each clamping block (9) is provided with a clamping groove, and each clamping groove has an arc-shaped inner wall.

6. A positioning mechanism for facilitating machining of shaft workpieces according to claim 5, characterized in that: An anti-slip pad (10) is fixedly mounted on the inner wall of each clamping groove, and each anti-slip pad (10) is made of rubber.

7. A positioning mechanism for facilitating machining of shaft workpieces according to claim 6, characterized in that: Two stabilizing rods (11) are fixedly mounted on the outer wall of each clamping block (9), and each stabilizing rod (11) slides through the clamping frame (7).

8. A positioning mechanism for facilitating machining of shaft workpieces according to claim 7, characterized in that: The transmission shaft (15) has a prismatic outer wall, and the two connecting sleeves (12) both have prismatic inner walls.

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