Double-end locking and positioning device for bar machining

Abstract

The utility model relates to the technical field of locking and positioning devices for bar machining, in particular to a double-end locking and positioning device for bar machining. The double-end locking and positioning device for bar machining aims at solving the technical problem that in the prior art, only one end of a bar can be locked, the concentricity of the two ends of the bar is easily affected, and therefore the machining precision is reduced. According to the technical scheme, the double-end locking and positioning device for bar machining comprises a reciprocating driving assembly; the device further comprises a mounting plate, a lifting air cylinder, a lifting guide supporting assembly, a U-shaped frame, a locking positioning assembly, a guide sliding assembly, a connecting rod, a three-jaw chuck and a roller. According to the utility model, the design of double-end locking and positioning is adopted, so that the concentricity of the two ends of a bar can be ensured when the bar is processed, the processing precision of the bar can be ensured, the locking mechanisms adopt the rotatable design, the 360-degree dead-corner-free processing of the surface of the bar is facilitated, the distance between the locking mechanisms is adjustable, and the locking mechanisms are suitable for bars with different lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of bar material processing locking and positioning devices, in particular to a bar material processing double-end locking and positioning device. Background Art

[0002] Bars are widely used and play an important role in the fields of construction, electricity, machinery manufacturing, automobiles, etc. The process usually includes the following steps: preparation and processing of raw materials, casting and rolling of blanks, finishing and inspection of finished products, etc. When processing bar materials, locking and positioning devices are indispensable to fix the bar materials, so as to facilitate the processing of the bar materials. However, when processing existing bar materials, only one end of the bar material can be locked. When the bar material rotates at high speed during processing, the centrifugal force is large, which is easy to affect the concentricity of the two ends of the bar material, thereby reducing the processing accuracy of the bar material. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a double-end locking and positioning device for bar processing, which aims to solve the technical problem that only one end of the bar can be locked under the prior art, which easily affects the concentricity of the two ends of the bar, thereby reducing the processing accuracy.

[0004] The technical scheme of the utility model is: a double-end locking and positioning device for bar processing, including a reciprocating drive component; also including a mounting plate, a lifting cylinder, a lifting guide support component, a U-shaped frame, a locking and positioning component, a guide sliding component, a connecting rod, a three-claw chuck and a roller; a mounting plate is fixedly connected to the middle part of the upper end of the reciprocating drive component; a lifting cylinder and a lifting guide support component symmetrically distributed on the upper end of the mounting plate are sequentially installed from the inside to the outside; a U-shaped frame that moves vertically is fixedly connected to the upper end of the lifting cylinder and the lifting guide support component; a locking and positioning component that is symmetrically distributed on the left and right and moves laterally is installed on the upper end of the reciprocating drive component; the guide sliding component is fixedly connected to the front and rear ends of the reciprocating drive component; a connecting rod symmetrically distributed on the left and right and fixedly connected to the locking and positioning component is slidably connected to the outer side of the guide sliding component; a three-claw chuck is rotatably connected to the inner side of the locking and positioning component; and rollers equidistantly distributed are rotatably connected inside the U-shaped frame.

[0005] Preferably, the rod is placed on the upper end of the roller in the U-shaped frame, and the lifting cylinder on the upper end of the mounting plate is started to control the U-shaped frame to rise and fall in the direction of the lifting guide support assembly so that the rod is aligned with the center point of the three-jaw chuck, and the reciprocating drive assembly is started to drive the locking and positioning assembly to move inward. Under the action of the connecting rod, the locking and positioning assembly moves inward along the direction of the guide sliding assembly until the rod is inserted into the three-jaw chuck, and the rod is locked by the three-jaw chuck. During processing, the locking and positioning assembly controls the rotation of the rod, thereby realizing processing of the surface of the rod.

[0006] Preferably, the reciprocating drive assembly includes a fixed seat; a double-headed ball screw is rotatably connected inside the fixed seat; a screw pair is symmetrically installed on the outside of the double-headed ball screw; the screw pair is fixedly connected to the locking and positioning assembly, and the screw pair is used to convert the rotational motion of the double-headed ball screw into linear motion, thereby controlling the locking and positioning assembly to move inward or outward synchronously, thereby achieving locking positioning of bars of different lengths.

[0007] Preferably, a first motor is installed in the fixed seat; a small gear is installed on the outside of the output shaft of the first motor; a large gear meshing with the small gear is installed on the outside of the double-headed ball screw, and the power of the first motor is transmitted to the double-headed ball screw through the meshing connection between the small gear and the large gear, thereby driving the double-headed ball screw to rotate.

[0008] Preferably, the lifting guide support assembly includes a guide sleeve; a compression spring is fixedly connected to the upper end of the bottom of the guide sleeve; an inner lifting rod is fixedly connected to the upper end of the compression spring, and the inner lifting rod rises and falls in the guide sleeve to play a guiding role and support both sides of the U-shaped frame to prevent the U-shaped frame from tilting or shifting.

[0009] Preferably, the locking and positioning assembly includes a vertical mounting block; a circular ring is fixedly connected to the upper end of the vertical mounting block; an annular groove is opened on the inner side of the circular ring; a second motor is installed on the inner side of the vertical mounting block, and the annular groove is utilized to not affect the rotation of the rotating block, so when the rotating block rotates, the rod material inside the three-jaw chuck is driven to rotate synchronously.

[0010] Preferably, the output shaft of the second motor passes through the vertical mounting block and is fixedly connected to a driving gear; a rotating block is rotatably connected in the annular groove; a driven gear meshing with the driving gear is rotatably connected to the outer side of the rotating block; the inner side of the rotating block is fixedly connected to the three-jaw chuck, and the power of the second motor is transmitted to the rotating block through the meshing of the driving gear and the driven gear, thereby driving the rotating block to rotate.

[0011] Preferably, the guide sliding assembly includes a side plate; a connecting column is fixedly connected between the side plate and the other side plate; a guide sleeve is symmetrically distributed on the left and right sides and is slidably connected to the outer side of the connecting column; the guide sleeve and the connecting rod are fixedly connected, and when the connecting rod moves, the guide sleeve slides synchronously on the outer side of the connecting column to play a guiding role.

[0012] Beneficial effects of the utility model:

[0013] 1. The double-head locking and positioning design is adopted. Therefore, when processing the bar, the concentricity of the two ends of the bar can be guaranteed, so as to ensure the processing accuracy of the bar. The locking mechanism adopts a rotatable design, which is convenient for 360-degree processing of the bar surface without dead angles, and the processing effect is more comprehensive. The distance between the locking mechanisms can be adjusted, which is suitable for bars of different lengths;

[0014] 2. The bar is clamped by a three-jaw chuck to ensure the clamping effect of bars of different diameters, and has a self-centering effect to ensure the coaxiality of both ends of the bar. At the same time, a guide sliding component is also provided to guide the locking and positioning component when it moves in the horizontal direction to avoid the locking and positioning component from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The first three-dimensional structure schematic diagram of the double-end locking and positioning device for bar processing of the utility model is shown;

[0016] Figure 2 Shown is a three-dimensional structural schematic diagram of a reciprocating drive assembly and a locking and positioning assembly in a double-end locking and positioning device for bar material processing of the utility model;

[0017] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the lifting guide support assembly and the U-shaped frame in the double-end locking and positioning device for bar processing of the utility model;

[0018] Figure 4 What is shown is a schematic diagram of the three-dimensional structure of the guide sliding component in the double-end locking and positioning device for bar processing of the utility model.

[0019] Explanation of the reference numerals: 1. reciprocating drive assembly; 101. fixed seat; 102. double-ended ball screw; 103. screw pair; 104. first motor; 105. small gear; 106. large gear; 2. mounting plate; 3. lifting cylinder; 4. lifting guide support assembly; 401. guide sleeve; 402. compression spring; 403. inner lifting rod; 5. U-shaped frame; 6. locking and positioning assembly; 601. vertical mounting block; 602. circular ring; 603. annular groove; 604. second motor; 605. driving gear; 606. rotating block; 607. driven gear; 7. guide sliding assembly; 701. side plate; 702. connecting column; 703. guide sleeve; 8. connecting rod; 9. three-jaw chuck; 10. roller. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1The utility model provides an embodiment: a double-end locking and positioning device for bar material processing, comprising a reciprocating drive assembly 1; further comprising a mounting plate 2, a lifting cylinder 3, a lifting guide support assembly 4, a U-shaped frame 5, a locking and positioning assembly 6, a guide sliding assembly 7, a connecting rod 8, a three-claw chuck 9 and a roller 10; the middle part of the upper end of the reciprocating drive assembly 1 is fixedly connected with the mounting plate 2; the upper end of the mounting plate 2 is sequentially installed with a lifting cylinder 3 and a lifting guide support assembly 4 symmetrically distributed on the left and right from the inside to the outside; the upper ends of the lifting cylinder 3 and the lifting guide support assembly 4 are fixedly connected with a U-shaped frame 5 that moves vertically; the upper end of the reciprocating drive assembly 1 is installed with a locking and positioning assembly 6 that is symmetrically distributed on the left and right and moves laterally; the front and rear ends of the reciprocating drive assembly 1 are fixedly connected with a guide sliding assembly 7; the outer side of the guide sliding assembly 7 is slidably connected with a connecting rod 8 that is symmetrically distributed on the left and right and fixedly connected to the locking and positioning assembly 6; the inner side of the locking and positioning assembly 6 is rotatably connected with a three-claw chuck 9; the U-shaped frame 5 is rotatably connected with rollers 10 distributed equidistantly.

[0022] See also Figure 2 In this embodiment, the reciprocating drive assembly 1 includes a fixed seat 101; a double-headed ball screw 102 is rotatably connected in the fixed seat 101; a screw pair 103 symmetrically distributed on the left and right is installed on the outside of the double-headed ball screw 102; the screw pair 103 is fixedly connected to the locking and positioning assembly 6; a first motor 104 is installed in the fixed seat 101; a small gear 105 is installed on the outside of the output shaft of the first motor 104; a large gear 106 meshing with the small gear 105 is installed on the outside of the double-headed ball screw 102; the locking and positioning assembly 6 includes The vertical mounting block 601 is enclosed; a circular ring 602 is fixedly connected to the upper end of the vertical mounting block 601; an annular groove 603 is provided on the inner side of the circular ring 602; a second motor 604 is installed on the inner side of the vertical mounting block 601; the output shaft of the second motor 604 passes through the vertical mounting block 601 and is fixedly connected to a driving gear 605; a rotating block 606 is rotatably connected in the annular groove 603; a driven gear 607 meshing with the driving gear 605 is rotatably connected on the outer side of the rotating block 606; the inner side of the rotating block 606 is fixedly connected to the three-jaw chuck 9.

[0023] See also Figure 3-4 In this embodiment, the lifting guide support assembly 4 includes a guide sleeve 401; a compression spring 402 is fixedly connected to the upper end of the bottom of the guide sleeve 401; an inner lifting rod 403 is fixedly connected to the upper end of the compression spring 402; the guide sliding assembly 7 includes a side plate 701; a connecting column 702 is fixedly connected between the side plate 701 and the other side plate 701; a guide sleeve 703 symmetrically distributed on the left and right is slidably connected to the outer side of the connecting column 702; the guide sleeve 703 and the connecting rod 8 are fixedly connected.

[0024] When working, the bar is placed on the upper end of the roller 10 in the U-shaped frame 5, and the lifting cylinder 3 at the upper end of the mounting plate 2 is started to control the lifting of the U-shaped frame 5. The inner lifting rod 403 moves upward in the guide sleeve 401, and the compression spring 402 is stretched to align the center point of the bar with the three-jaw chuck 9. The first motor 104 in the fixed seat 101 is started. Under the action of the small gear 105 and the large gear 106, the double-headed ball screw 102 is driven to rotate. The screw pair 103 converts the rotary motion into linear motion, driving the vertical mounting block 601 to move inward, and the guide sleeve 703 at the lower end of the connecting rod 8 slides inward along the direction of the connecting column 702 until the bar is inserted into the three-jaw chuck 9, and the bar is locked by the three-jaw chuck 9. During processing, the second motor 604 is started. Under the action of the driving gear 605 and the driven gear 607, the rotating block 606 rotates in the annular groove 603, and the three-jaw chuck 9 rotates synchronously, thereby realizing the processing of the surface of the bar.

[0025] Through the above steps, a double-head locking and positioning design is adopted. Therefore, when processing the bar, the concentricity of the two ends of the bar can be guaranteed, thereby ensuring the processing accuracy of the bar, and the locking mechanism adopts a rotatable design, which is convenient for 360-degree processing of the bar surface without dead angles, and the processing effect is more comprehensive. The distance between the locking mechanisms is adjustable, which is suitable for bars of different lengths.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A double-end locking and positioning device for bar processing, comprising a reciprocating drive assembly (1); characterized in that: The utility model also comprises a mounting plate (2), a lifting cylinder (3), a lifting guide support assembly (4), a U-shaped frame (5), a locking and positioning assembly (6), a guide sliding assembly (7), a connecting rod (8), a three-claw chuck (9) and a roller (10); the middle part of the upper end of the reciprocating drive assembly (1) is fixedly connected to the mounting plate (2); the upper end of the mounting plate (2) is sequentially installed with the lifting cylinder (3) and the lifting guide support assembly (4) which are symmetrically distributed on the left and right from the inside to the outside; the upper ends of the lifting cylinder (3) and the lifting guide support assembly (4) are fixedly connected to each other. A U-shaped frame (5) is connected and moves in the vertical direction; a locking and positioning assembly (6) which is symmetrically distributed on the left and right and moves in the horizontal direction is installed on the upper end of the reciprocating drive assembly (1); the front and rear ends of the reciprocating drive assembly (1) are fixedly connected to guide sliding assemblies (7); the outer side of the guide sliding assembly (7) is slidably connected to a connecting rod (8) which is symmetrically distributed on the left and right and fixedly connected to the locking and positioning assembly (6); the inner side of the locking and positioning assembly (6) is rotatably connected to a three-claw chuck (9); and rollers (10) which are equidistantly distributed are rotatably connected inside the U-shaped frame (5).

2. A double-end locking and positioning device for bar processing according to claim 1, characterized in that: The reciprocating drive assembly (1) comprises a fixed seat (101); a double-headed ball screw (102) is rotatably connected inside the fixed seat (101); a screw pair (103) symmetrically distributed on the left and right is installed outside the double-headed ball screw (102); and the screw pair (103) is fixedly connected to the locking and positioning assembly (6).

3. A double-end locking and positioning device for bar processing according to claim 2, characterized in that: A first motor (104) is installed in the fixing seat (101); a small gear (105) is installed on the outer side of the output shaft of the first motor (104); and a large gear (106) meshingly connected with the small gear (105) is installed on the outer side of the double-ended ball screw (102).

4. A double-end locking and positioning device for bar processing according to claim 1, characterized in that: The lifting guide support assembly (4) comprises a guide sleeve (401); the upper end of the inner bottom of the guide sleeve (401) is fixedly connected to a compression spring (402); the upper end of the compression spring (402) is fixedly connected to an inner lifting rod (403).

5. The double-end locking and positioning device for bar processing according to claim 1, characterized in that: The locking and positioning assembly (6) comprises a vertical mounting block (601); a circular ring (602) is fixedly connected to the upper end of the vertical mounting block (601); an annular groove (603) is provided inside the circular ring (602); and a second motor (604) is installed inside the vertical mounting block (601).

6. A double-end locking and positioning device for bar processing according to claim 5, characterized in that: The output shaft of the second motor (604) passes through the vertical mounting block (601) and is fixedly connected to a driving gear (605); a rotating block (606) is rotatably connected inside the annular groove (603); a driven gear (607) meshingly connected to the driving gear (605) is rotatably connected outside the rotating block (606); and the inner side of the rotating block (606) is fixedly connected to the three-jaw chuck (9).

7. A double-end locking and positioning device for bar processing according to claim 1, characterized in that: The guide sliding assembly (7) comprises a side plate (701); a connecting column (702) is fixedly connected between the side plate (701) and the other side plate (701); a guide sliding sleeve (703) symmetrically distributed on the left and right is slidably connected to the outside of the connecting column (702); and the guide sliding sleeve (703) and the connecting rod (8) are fixedly connected.

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