A cutting tool device for round bars

Abstract

This utility model relates to a cutting tool device for round bars, including a mounting base. Two transverse slide rails are fixed inside the mounting base. At least two sliding pin mechanisms are installed between the lower transverse slide rail and the mounting base. A transverse slider is installed between the two transverse slide rails, and a movable cutting head is installed on the transverse slider, corresponding to a fixed cutting head mounted on the mounting base. The transverse slider is mounted on the outer circumferential surface of an eccentric shaft, one end of which is connected to the output end of a drive assembly. A first clamping mechanism and a second clamping mechanism are respectively installed on one side wall of the mounting base. A third clamping mechanism is installed on the other side wall of the mounting base. This device enables high-precision cutting of workpieces, ensuring product consistency and stability, reducing product defects caused by cutting errors, and improving product qualification rate. It allows for one-time cutting of workpieces, effectively improving production efficiency and cutting quality.

Description

Technical Field

[0001] This utility model relates to the field of shearing tool technology, and in particular to a cutting tool device for round bars. Background Technology

[0002] For cylindrical metal workpieces, the cylindrical blanks are often manually cut to the required length, and then the shape is machined to meet the precision requirements, thus producing a product that meets the requirements. This processing method has low production efficiency, long production time, and high labor costs. At the same time, products cut manually have greater perpendicularity, flatness, and roughness of the cut end face, resulting in low cutting accuracy and poor consistency. Utility Model Content

[0003] Therefore, it is necessary to provide a round bar cutting tool device to address the problems of low production efficiency, high production cost, low cutting accuracy, and poor product consistency in the existing technology of manually cutting metal workpieces.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A round bar cutting device includes a mounting base. Two transverse slide rails are fixedly fixed parallel to each other along the height direction inside the mounting base. At least two sliding pin mechanisms are installed between the lower transverse slide rail and the mounting base. A transverse slider is installed between the two transverse slide rails. A movable cutter head is installed on the transverse slider. The movable cutter head is arranged correspondingly to a fixed cutter head installed on the mounting base.

[0006] The transverse slider is mounted on the outer circumferential surface of the eccentric shaft. One end of the eccentric shaft is connected to the output end of the drive assembly. The drive assembly drives the eccentric shaft to rotate, thereby causing the movable cutter head to make a linear motion close to the fixed cutter head, and thus cut the workpiece.

[0007] A first clamping mechanism and a second clamping mechanism are respectively installed on one side wall of the mounting base. The first clamping mechanism and the second clamping mechanism are arranged at intervals relative to each other along the length direction of the mounting base. The first clamping mechanism and the second clamping mechanism are used to clamp the workpiece.

[0008] A third clamping mechanism is fitted on the other side wall of the mounting base. The auxiliary pressing mechanism is arranged along the length of the mounting base and is used to support the workpiece when the movable cutter head cuts the workpiece.

[0009] As a further improvement to the above technical solution:

[0010] The structure of the first clamping mechanism is as follows: it includes a pressure cylinder fixed on the mounting base, and the output end of the pressure cylinder is connected to the first pressure block;

[0011] The pressure cylinder drives the first pressure block to move linearly along the length of the mounting base toward or away from the second clamping mechanism, thereby clamping or releasing the workpiece.

[0012] The working end face of the first pressure block is provided with an inward concave arc surface corresponding to the outer circumference of the workpiece.

[0013] The structure of the second clamping mechanism is as follows: it includes a pressure fixing seat fixed on the mounting base, and a second pressure block is installed on the pressure fixing seat through an adjusting screw.

[0014] The third clamping mechanism has the following structure: it includes a follower cylinder fixed on the mounting base, and the output end of the follower cylinder is connected to an auxiliary pressing block.

[0015] The structure of a single sliding pin mechanism is as follows: it includes an adjusting pin that is slidably installed between the mounting base and the corresponding transverse slide rail, and an adjusting pin sleeve fixed to one side wall of the mounting base. The adjusting pin sleeve has a central hole in the middle, and the adjusting pin sleeve is installed in conjunction with the adjusting pin through the central hole. A ring-shaped limiting step is provided axially in the central hole, and an adjusting spring is installed between the two limiting steps. The adjusting spring is sleeved on the outer circumferential surface of the adjusting pin.

[0016] An adjusting nut is fitted to the end of the adjusting pin, and a chamfered surface is provided on the outer circumference of the adjusting pin.

[0017] Several grooves are provided on the top end face of the horizontal sliding rail located below. Each groove has an inclined surface corresponding to the inclined surface. The mounting base has several receiving slots that correspond one-to-one with the grooves. Each receiving slot and the corresponding groove form an installation space for installing the adjusting pin.

[0018] The mounting base has the following structure: it includes two parallel side plates arranged at intervals, which are connected by a connecting plate, and both side plates are provided with shearing slots.

[0019] The fixed cutter head is installed inside the shearing opening, and the workpiece is cut by extending it into the shearing opening.

[0020] The structure of the eccentric shaft is as follows: it includes a first shaft segment, a second shaft segment, and a third shaft segment arranged in sequence.

[0021] The first shaft segment and the third shaft segment are arranged concentrically, and the second shaft segment is arranged eccentrically relative to the first shaft segment and the third shaft segment;

[0022] The diameter of the second shaft segment is larger than that of the first shaft segment, and the diameter of the second shaft segment is larger than that of the third shaft segment; the second shaft segment is used to cooperate with the transverse slider for installation.

[0023] The other end of the eccentric shaft is fitted with a ranging mechanism, which is used to monitor the moving distance of the transverse slider.

[0024] The distance measuring mechanism has the following structure: it includes a first synchronous wheel fixed to the end of an eccentric shaft and a distance measuring base. A rotating shaft is rotatably mounted on the distance measuring base. An encoder is connected to the end of the rotating shaft. A second synchronous wheel is fitted on the outer circumference of the rotating shaft. A synchronous belt is fitted between the second synchronous wheel and the first synchronous wheel.

[0025] The beneficial effects of this utility model are as follows:

[0026] This utility model has a compact and reasonable structure and is easy to operate. By setting up a first clamping mechanism, a second clamping mechanism, and a third clamping mechanism, it can achieve high-precision cutting of workpieces, ensure product consistency and stability, reduce product defects caused by cutting errors, and improve product qualification rate. Thus, it can cut the workpiece into place in one go, effectively improving production efficiency and cutting quality. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 for Figure 1 The main view.

[0029] Figure 3 for Figure 1 Rear view.

[0030] Figure 4 for Figure 1 Exploded view.

[0031] Figure 5 This is an exploded view of the present invention.

[0032] Figure 6 This is an exploded view of the transverse slider, eccentric shaft, and gear in this utility model.

[0033] Figure 7 This is a full sectional view of the sliding pin mechanism in this utility model.

[0034] Figure 8 This is a schematic diagram of the present invention in its working state.

[0035] The components include: 1. First clamping mechanism; 2. Second clamping mechanism; 3. Third clamping mechanism; 4. Bearing; 5. Mounting base; 6. Fixed cutter head; 7. Movable cutter head; 8. Transverse sliding block; 9. Sliding pin mechanism; 10. Transverse sliding rail; 11. Slide groove; 12. Distance measuring mechanism; 13. Gear; 14. Assembly hole; 15. Eccentric shaft; 16. Drive motor; 17. Flywheel; 18. Transmission shaft.

[0036] 101. First pressing block; 102. Pressing cylinder; 103. Concave arc surface;

[0037] 201. Second pressure block; 202. Adjusting screw; 203. Pressure fixing seat;

[0038] 301. Auxiliary pressing block; 302. Follow-up hydraulic cylinder;

[0039] 501, First mounting hole; 502, Second mounting hole; 503, Side plate; 504, Connecting plate; 505, Shearing nozzle; 506, Discharge guide plate;

[0040] 901. Adjusting pin; 902. Adjusting pin sleeve; 903. Adjusting spring; 904. Adjusting nut; 905. Limiting step; 906. Beveled surface;

[0041] 1201, First synchronous pulley; 1202, Second synchronous pulley; 1203, Synchronous belt; 1204, Distance measuring fixture; 1205, Encoder;

[0042] 1501, First shaft segment; 1502, Second shaft segment; 1503, Third shaft segment. Detailed Implementation

[0043] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0044] The structure and function of this utility model are as follows:

[0045] like Figures 1-8As shown, a round bar cutting device includes a mounting base 5. Two transverse slide rails 10 are fixedly fixed parallel to each other along the height direction inside the mounting base 5. At least two sliding pin mechanisms 9 are fitted between the lower transverse slide rail 10 and the mounting base 5. A transverse slider 8 is fitted between the two transverse slide rails 10. A movable cutter head 7 is fitted on the transverse slider 8, and the movable cutter head 7 is correspondingly arranged with a fixed cutter head 6 mounted on the mounting base 5. The transverse slider 8 is mounted on the outer circumferential surface of an eccentric shaft 15. One end of the eccentric shaft 15 is connected to the output end of a drive assembly. The drive assembly drives... The rotating eccentric shaft 15 drives the movable cutter head 7 to move linearly towards the fixed cutter head 6, thereby cutting the workpiece. A first clamping mechanism 1 and a second clamping mechanism 2 are respectively installed on one side wall of the mounting base 5, arranged at intervals along the length of the mounting base 5, and used to clamp the workpiece. A third clamping mechanism 3 is installed on the other side wall of the mounting base 5, and an auxiliary pressing mechanism 13 is arranged along the length of the mounting base 5 to support the workpiece when the movable cutter head 7 is cutting. By setting the first clamping mechanism 1, the second clamping mechanism 2, and the third clamping mechanism 3, high-precision cutting of the workpiece can be achieved, ensuring product consistency and stability, reducing product defects caused by cutting errors, improving product qualification rate, and enabling the workpiece to be cut in one go, effectively improving production efficiency and cutting quality.

[0046] By setting a fixed cutter head 6, a horizontal sliding block 8, and a movable cutter head 7, the workpiece can be efficiently sheared in the horizontal direction, thereby cutting the workpiece into short bar products of a certain length.

[0047] The structure of the first clamping mechanism 1 is as follows: it includes a pressure cylinder 102 fixed on the mounting base 5, and the output end of the pressure cylinder 102 is connected to a first pressure block 101; the pressure cylinder 102 drives the first pressure block 101 to move linearly towards or away from the second clamping mechanism 2 along the length direction of the mounting base 5, thereby clamping or releasing the workpiece. In order to improve the shearing accuracy, this embodiment is provided with a first clamping mechanism 1, a second clamping mechanism 2 and a third clamping mechanism 3, so that the workpiece is clamped by the first clamping mechanism 1 and the second clamping mechanism 2 during the shearing process, thereby achieving the fixed positioning of the workpiece;

[0048] The working end face of the first pressure block 101 is provided with an inward concave arc surface 103 corresponding to the outer circumferential surface of the workpiece. By providing the inward concave arc surface 103, the first pressure block 101 can fit against the outer circumferential surface of the workpiece, thereby improving the clamping effect of the first clamping mechanism 1 and the second clamping mechanism 2 on the workpiece.

[0049] The second clamping mechanism 2 has the following structure: it includes a pressure fixing seat 203 fixed on the mounting base 5, and a second pressure block 201 is mounted on the pressure fixing seat 203 in cooperation with an adjusting screw 202. The linear distance between the second pressure block 201 and the pressure fixing seat 203 can be adjusted by rotating the adjusting screw 202 in the horizontal direction, thereby facilitating the matching of workpieces of different specifications and improving the compatibility of the cutting device.

[0050] The third clamping mechanism 3 has the following structure: it includes a follower cylinder 302 fixed on the mounting base 5, and the output end of the follower cylinder 302 is connected to an auxiliary pressure block 301. When shearing the workpiece, the movable cutter head 7 moves forward in a straight line in the horizontal direction, and the working end face of the auxiliary pressure block 301 is in contact with the workpiece. At the same time, under the action of the follower cylinder 302, the auxiliary pressure block 301 moves backward in a straight line in the horizontal direction along with the forward movement of the movable cutter head 7.

[0051] In this invention, along the direction from workpiece feeding to discharge, the first clamping mechanism 1 and the second clamping mechanism 2 are arranged at the front end of the fixed cutter head 6 and the movable cutter head 7, and the rear end of the fixed cutter head 6 is provided with the third clamping mechanism 3. The auxiliary pressing block 301 is corresponding to the movable cutter head 7. During the translational movement of the movable cutter head 7 relative to the fixed cutter head 6, the auxiliary pressing block 301 moves backward with the movement of the movable cutter head 7 under the action of the follower cylinder 302, so as to avoid interfering with the movement of the movable cutter head 7 and further improve the flatness of the cut surface of the workpiece and improve the cutting accuracy.

[0052] The structure of a single sliding pin mechanism 9 includes an adjusting pin 901 slidably mounted between the mounting base 5 and the corresponding transverse slide rail 10, and an adjusting pin sleeve 902 fixed to one side wall of the mounting base 5. A central hole is formed in the middle of the adjusting pin sleeve 902, through which the adjusting pin sleeve 902 engages with the adjusting pin 901. Annular limiting steps 905 are spaced axially within the central hole, and an adjusting spring 903 is fitted between the two limiting steps 905. The adjusting spring 903 is sleeved on the outer circumferential surface of the adjusting pin 901. An adjusting nut 904 is fitted to the end of the adjusting pin 901, and a chamfered surface 906 is provided on the outer circumferential surface of the adjusting pin 901. Before production, the operator manually adjusts the gap between the transverse slider 8 and the upper and lower transverse slide rails 10. After adjustment, the adjusting nut 904 is tightened to lock the adjusting pin 901, thereby allowing the transverse slider 8 to drive the movable cutter head 7 to move closer to the fixed cutter head 6.

[0053] The top surface of the lower transverse slide rail 10 has several grooves 11, each groove 11 containing a bevel corresponding to the chamfered surface 906. The mounting base 5 has several receiving slots corresponding to the grooves 11, forming an installation space between each receiving slot and its corresponding groove 11 for installing the adjusting pin 901. The transverse slide rail 10 is installed by engaging with the corresponding sliding pin mechanism 9 via the grooves 11.

[0054] The mounting base 5 has the following structure: it includes two parallel side plates 503 spaced apart, connected by a connecting plate 504. Both side plates 503 have shearing openings 505. A fixed cutting head 6 is installed inside the shearing opening 505, allowing cutting of the workpiece by inserting it into the shearing opening 505. In this invention, a receiving groove is formed on the connecting plate 504; both side plates 503 have first mounting holes 501 for mounting with the eccentric shaft 15 and second mounting holes 502 for mounting with the drive shaft 18.

[0055] A discharge guide plate 506 is installed inside the shearing opening 505, and a discharge track is installed outside the shearing opening 505. The discharge guide plate 506 is used to guide the sheared short bar products to fall into the discharge track.

[0056] The eccentric shaft 15 has the following structure: it includes a first shaft segment 1501, a second shaft segment 1502, and a third shaft segment 1503 arranged sequentially; the first shaft segment 1501 and the third shaft segment 1503 are concentrically arranged, and the second shaft segment 1502 is eccentrically arranged relative to the first shaft segment 1501 and the third shaft segment 1503; the diameter of the second shaft segment 1502 is larger than the diameter of the first shaft segment 1501, and the diameter of the third shaft segment 1503 is larger than the diameter of the third shaft segment 1503; the second shaft segment 1502 is used to mate with the transverse sliding block 8. The first shaft segment 1501 is used to mate with the gear 13, and the third shaft segment 1503 is used to mate with the bearing 4.

[0057] A mounting hole 14 is provided on the end face of the transverse slider 8, and the second shaft segment 1502 is installed in conjunction with the transverse slider 8 through the mounting hole 14. By setting the second shaft segment 1502, the eccentric shaft 15 can drive the transverse slider 8 to generate a horizontal motion component during rotation.

[0058] A distance measuring mechanism 12 is installed at the other end of the eccentric shaft 15. The distance measuring mechanism 12 is used to monitor the movement distance of the transverse slider 8. The structure of the distance measuring mechanism 12 includes a first synchronous wheel 1201 fixed to the end of the eccentric shaft 15 and a distance measuring fixed seat 1204. A rotating shaft is rotatably mounted on the distance measuring fixed seat 1204. An encoder 1205 is connected to the end of the rotating shaft. A second synchronous wheel 1202 is installed on the outer circumference of the rotating shaft. A synchronous belt 1203 is installed between the second synchronous wheel 1202 and the first synchronous wheel 1201. By setting the encoder 1205, the horizontal displacement distance of the transverse slider 8 can be monitored based on the number of rotations and rotation angle of the eccentric shaft 15, thereby monitoring the distance between the movable cutter head 7 and the fixed cutter head 6, and thus realizing fully automatic shearing.

[0059] The cutting blade device of this utility model is driven by an external drive assembly. The external drive assembly includes a drive motor 16 and a transmission shaft 18 installed in the second mounting hole 502 of the mounting base 5. One end of the transmission shaft 18 is connected to the output end of the drive motor 16 through a belt drive mechanism. The belt drive mechanism includes a pulley fixed to the output end of the drive motor 16 and a flywheel 17 fixed to the shaft end of the transmission shaft 18. A transmission belt is installed between the flywheel 17 and the pulley.

[0060] The other end of the drive shaft 18 has gear teeth on its outer circumference, and the drive shaft 18 meshes with the gear 13 fixed to the end of the eccentric shaft 15 through the gear teeth.

[0061] The drive motor 16 drives the pulley to rotate, which in turn drives the flywheel 17 to rotate via the transmission belt. This drives the transmission shaft 18 to rotate, which in turn drives the gear 13 to rotate. The rotating gear 13 drives the eccentric shaft 15 to rotate, thereby driving the transverse slider 8 to move in a straight line in the horizontal direction.

[0062] The working process of this utility model is as follows:

[0063] First, the pressure cylinder 102 extends and drives the first pressure block 101 to make a linear movement in the horizontal direction close to the second pressure block 201, thereby clamping the workpiece.

[0064] Subsequently, the drive motor 16 drives the eccentric shaft 15 to rotate, and the transverse slider 8 drives the movable cutter head 7 to move in the horizontal direction towards the fixed cutter head 6, thereby shearing the workpiece.

[0065] At the same time, the auxiliary pressure block 301 retracts with the shearing action of the movable cutter head 7, which avoids interfering with the action of the movable cutter head 7, and can clamp the workpiece through the third clamping mechanism 3 to ensure that the workpiece cross-section is flat and the cut is perpendicular to the workpiece axis.

[0066] Finally, the sheared workpiece is discharged.

[0067] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A cutting tool device for round bars, characterized in that: Includes a mounting base (5), inside which two transverse slide rails (10) are fixed at parallel intervals along the height direction. At least two sliding pin mechanisms (9) are installed between the lower transverse slide rail (10) and the mounting base (5). A transverse slider (8) is installed between the two transverse slide rails (10). A movable cutter head (7) is installed on the transverse slider head (8). The movable cutter head (7) is arranged correspondingly to the fixed cutter head (6) installed on the mounting base (5). The transverse slider (8) is installed on the outer circumferential surface of the eccentric shaft (15). One end of the eccentric shaft (15) is connected to the output end of the drive assembly. The drive assembly drives the eccentric shaft (15) to rotate, thereby driving the movable cutter head (7) to make a linear motion close to the fixed cutter head (6) and then cut the workpiece. The mounting base (5) has a first clamping mechanism (1) and a second clamping mechanism (2) installed on one side wall respectively. The first clamping mechanism (1) and the second clamping mechanism (2) are arranged at intervals relative to each other along the length direction of the mounting base (5). The first clamping mechanism (1) and the second clamping mechanism (2) are used to clamp the workpiece. A third clamping mechanism (3) is installed on the other side wall of the mounting base (5), and an auxiliary pressing mechanism (13) is also included. The auxiliary pressing mechanism (13) is arranged along the length of the mounting base (5) and is used to support the workpiece when the movable cutter head (7) cuts the workpiece.

2. The round bar cutting device as described in claim 1, characterized in that: The structure of the first clamping mechanism (1) is as follows: it includes a pressing cylinder (102) fixed on the mounting base (5), and the output end of the pressing cylinder (102) is connected to the first pressing block (101); The pressure cylinder (102) drives the first pressure block (101) to move linearly along the length of the mounting base (5) toward or away from the second clamping mechanism (2), thereby clamping or releasing the workpiece.

3. The round bar cutting device as described in claim 2, characterized in that: The working end face of the first pressure block (101) is provided with an inner concave arc surface (103) corresponding to the outer circumferential surface of the workpiece.

4. The round bar cutting device as described in claim 1, characterized in that: The structure of the second clamping mechanism (2) is as follows: it includes a pressure fixing seat (203) fixed on the mounting base (5), and a second pressure block (201) is installed on the pressure fixing seat (203) in cooperation with the adjusting screw (202).

5. The round bar cutting device as described in claim 1, characterized in that: The structure of the third clamping mechanism (3) is as follows: it includes a follower cylinder (302) fixed on the mounting base (5), and the output end of the follower cylinder (302) is connected to the auxiliary pressing block (301).

6. The round bar cutting tool device as described in claim 1, characterized in that: The structure of a single sliding pin mechanism (9) is as follows: it includes an adjusting pin (901) that is slidably installed between the mounting base (5) and the corresponding transverse slide rail (10), and an adjusting pin sleeve (902) that is fixed on one side wall of the mounting base (5). The adjusting pin sleeve (902) has a central hole in the middle. The adjusting pin sleeve (902) is installed in cooperation with the adjusting pin (901) through the central hole. A ring-shaped limiting step (905) is provided axially in the central hole. An adjusting spring (903) is installed between the two limiting steps (905). The adjusting spring (903) is sleeved on the outer circumference of the adjusting pin (901). The end of the adjusting pin (901) is fitted with an adjusting nut (904), and a chamfered surface (906) is provided on the outer circumference of the adjusting pin (901).

7. The round bar cutting device as described in claim 6, characterized in that: The top end face of the transverse slide rail (10) located below is provided with several slide grooves (11). Each slide groove (11) is provided with an inclined surface corresponding to the inclined surface (906). The interior of the mounting base (5) is provided with several receiving grooves corresponding to the slide grooves (11). Each receiving groove and the corresponding slide groove (11) form an installation space for installing the adjusting pin (901).

8. The round bar cutting device as described in claim 6, characterized in that: The structure of the mounting base (5) is as follows: it includes two parallel side plates (503) spaced apart, which are connected by a connecting plate (504). The two side plates (503) are provided with shearing slots (505). The fixed cutter head (6) is installed inside the shearing opening (505) and the workpiece is inserted into the shearing opening (505) to perform cutting.

9. The round bar cutting device as described in claim 1, characterized in that: The structure of the eccentric shaft (15) is as follows: it includes a first shaft segment (1501), a second shaft segment (1502) and a third shaft segment (1503) arranged in sequence. The first shaft segment (1501) and the third shaft segment (1503) are arranged concentrically, and the second shaft segment (1502) is arranged eccentrically relative to the first shaft segment (1501) and the third shaft segment (1503); The diameter of the second shaft segment (1502) is greater than that of the first shaft segment (1501), and the diameter of the second shaft segment (1502) is greater than that of the third shaft segment (1503); the second shaft segment (1502) is used to cooperate with the transverse slider (8) for installation.

10. The round bar cutting device as described in claim 1, characterized in that: The other end of the eccentric shaft (15) is fitted with a distance measuring mechanism (12), which is used to monitor the moving distance of the transverse slider (8); The structure of the ranging mechanism (12) is as follows: it includes a first synchronous wheel (1201) fixed to the end of the eccentric shaft (15) and a ranging fixing seat (1204). A rotating shaft is rotatably mounted on the ranging fixing seat (1204). An encoder (1205) is connected to the end of the rotating shaft. A second synchronous wheel (1202) is fitted on the outer circumference of the rotating shaft. A synchronous belt (1203) is fitted between the second synchronous wheel (1202) and the first synchronous wheel (1201).

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