A pin finishing machine tool

Abstract

The present invention discloses a pin shaft finishing machine tool, comprising a main frame, a feeding chamber is installed above the rear side of the main frame, a first clamping assembly is installed on the front side of the interior of the feeding chamber, a second clamping assembly is installed on the rear side of the interior of the feeding chamber, a group of telescopic rods are installed on the front side of the second clamping assembly, the output ends of one group of telescopic rods are fixedly connected to the rear end of the first clamping assembly, the telescopic rods pull the first clamping assembly and the second clamping assembly to a maximum distance, the round tube to be cut is placed in the feeding chamber through the feed hole, and the round tube is passed through the first clamping assembly and the second clamping assembly, at this time the control box controls the first clamping assembly and the second clamping assembly to clamp the round tube, so as to simultaneously fix the front end and the middle and rear end of the round tube, and prevent the round tube from bending due to the lack of support at the rear end of the round tube when cutting the front end of the round tube. The device solves the problem of few support points in the current long round tube processing.

Description

Technical Field

[0001] The invention relates to the technical field of pin processing, in particular to a pin finishing machine tool. Background Art

[0002] Pins are a type of standardized fasteners that can be used for static fixed connections or for relative movement with the connected parts. They are mainly used at the hinges of two parts to form hinge connections. The processing flow is based on the design drawings as needed, marking the angles and dimensions, selecting the appropriate material round tube, and cutting according to the required dimensions. In this process, in order to reduce the generation of waste, relatively long round tubes are now often used for direct cutting, and then cut off at the end of cutting to proceed to the next workpiece. This reduces the waste rate of customizing round tubes according to the size of the workpiece and then placing them in for cutting in sequence, and at the same time reduces the time cost of workers placing the materials in sequence. However, when using relatively long round tubes, since only the front end is fixed and drives the rotation, the rear end of the round tube is slightly bent due to lack of support, and the bending affects the quality of the finished product of the workpiece. Therefore, a pin finishing machine is proposed to achieve multi-point fixed support of the round tube. Summary of the Invention

[0003] The object of the present invention is to provide a pin shaft finishing machine tool to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a pin shaft finishing machine tool, comprising a main frame, a feeding chamber installed above the rear side of the main frame, a control box installed at the upper end of the feeding chamber, feeding holes opened on the front and rear sides of the feeding chamber, a first clamping assembly installed on the front side of the feeding chamber, a second clamping assembly installed on the rear side of the feeding chamber, a first bracket installed on the lower surface of the feeding chamber, a second bracket slidably connected to the lower surface of the feeding chamber, the first bracket is connected to the bearing of the first clamping assembly, the second bracket is connected to the bearing of the second clamping assembly, a group of telescopic rods are installed on the front side of the second clamping assembly, and the output end of a group of telescopic rods is fixedly connected to the rear end of the first clamping assembly.

[0005] The present invention further explains that the first clamping assembly and the second clamping assembly both include a driven wheel, a first circular hole is opened at the center of the driven wheel, at least one group of fixed blocks are installed on the front side of the driven wheel, a clamping tooth is installed on the front side of the fixed block, a rotating shaft is installed on one side of the middle section of the front side of the clamping tooth, a slide groove is opened on the front side of the driven wheel, the slide groove and the first circular hole are concentric circles, a guide block is slidably connected to the inner surface of the slide groove, a plurality of slots are opened on the side wall of the guide block, one end of the clamping tooth extends into the interior of the guide block through the slot, a guide hole is opened on the front wall of the guide block, the rotating shaft passes through the guide hole at its corresponding position, a second circular hole is opened at the center of the guide block, the second circular hole and the first circular hole have the same central axis, and the second circular holes on the first clamping assembly and the second clamping assembly are also located on the same central axis.

[0006] The present invention further describes that a motor is installed on the front side of the driven wheel, a pinion is installed on the output end of the motor, teeth are provided on the outer wall of the guide block, and the pinion meshes with the teeth on the guide block.

[0007] The present invention further describes that an infrared detector is installed on the pinion, and the infrared detectors on the first clamping assembly and the second clamping assembly are opposite to each other and are used to receive infrared rays emitted by each other.

[0008] The present invention further describes that a rotating assembly is installed inside the feeding chamber, and the output end of the rotating assembly is connected to a driving wheel, and the driving wheel is meshed with the driven wheel.

[0009] The present invention further illustrates that the specific steps of the feeding assembly are as follows:

[0010] In the first step, the first clamping assembly and the second clamping assembly are in the default open state, and the telescopic rod pulls the first clamping assembly and the second clamping assembly to the maximum distance, and the data required for cutting are input on the control box;

[0011] The second step is to pass the round tube through the first clamping assembly and the second clamping assembly. At this time, the control box controls the first clamping assembly and the second clamping assembly to clamp the round tube, thereby fixing the front end and the middle and rear end of the round tube at the same time.

[0012] The third step is to open the rotating assembly, drive the rotating assembly to drive the first clamping assembly and the second clamping assembly to rotate simultaneously, to prevent the round tube from bending due to the lack of support at the rear end of the round tube when cutting the front end of the round tube.

[0013] The present invention further illustrates that the specific steps of the detection component are as follows:

[0014] In the first step, when the first clamping assembly and the second clamping assembly simultaneously clamp the round pipe, the control box turns on the two infrared detectors at the same time. If the two infrared detectors correspond to each other and can receive information, it means that the pipe diameters are consistent and the pipes are not bent;

[0015] In the second step, if the positions of the two infrared detectors are not corresponding and they cannot receive each other's information, it means that the diameters of the front and rear of the pipe are inconsistent or the pipe is bent, causing one of the clamping components to not completely fit the outer wall of the round pipe. At this time, the control box controls the second clamping component to move forward so that the distance between the second clamping component and the first clamping component is the distance required for one cutting. It then detects whether the front end of the round pipe meets the cutting standard to avoid waste.

[0016] In the third step, if the two infrared detectors still cannot receive each other's information, it means that the curvature of the round tube is too large, which affects the cutting. At this time, the control box will issue a reminder to prevent the unqualified round tube from causing the cutting pin to fail, which will waste cutting time.

[0017] In the fourth step, the second clamping assembly cooperates with the first clamping assembly to withdraw the round tube from the feeding chamber to facilitate reloading.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adopts a second clamping assembly and a telescopic rod, the first clamping assembly and the second clamping assembly are in the default open state, and at this time the telescopic rod pulls the first clamping assembly and the second clamping assembly to the maximum distance, and the round tube to be cut is placed into the feeding chamber through the feed hole, and the round tube is passed through the first clamping assembly and the second clamping assembly. At this time, the control box controls the first clamping assembly and the second clamping assembly to clamp the round tube, thereby simultaneously fixing the front end and the middle and rear end of the round tube. At this time, the control box opens the rotating assembly, driving the rotating assembly to drive the first clamping assembly and the second clamping assembly to rotate at the same time, thereby preventing the round tube from bending due to the lack of support at the rear end of the round tube when cutting the front end of the round tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall front structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall front partial cross-sectional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the enlarged structure of area A of the present invention;

[0023] Figure 4 is an exploded schematic diagram of the clamping assembly of the present invention;

[0024] In the figure: 1. Main frame; 2. Feeding chamber; 3. Control box; 4. Feeding hole; 5. First bracket; 6. Second bracket; 7. Rotating assembly; 8. First clamping assembly; 9. Second clamping assembly; 10. Telescopic rod; 11. Driven wheel; 12. Driving wheel; 13. Slide; 14. First circular hole; 15. Second circular hole; 16. Fixed block; 17. Clamping teeth; 18. Rotating shaft; 19. Guide block; 20. Guide hole; 21. Teeth; 22. Pinion; 23. Motor; 24. Infrared detector. DETAILED DESCRIPTION

[0025] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] See also Figure 1-3 The present invention provides a technical solution: a pin shaft finishing machine tool, comprising a main frame 1, a feeding chamber 2 is installed at the rear end of the main frame 1, for fixing the feeding assembly, a control box 3 is fixedly installed on the feeding chamber 2, for receiving signals, processing information and sending instructions, and feeding holes 4 are opened on the front and rear walls of the feeding chamber 2 for allowing round tubes to enter and exit, the feeding assembly comprises a first clamping assembly 8 and a second clamping assembly 9, for fixing the round tube and driving the round tube to rotate, the first clamping assembly 8 is connected to a first bracket 5 with a bearing, the first bracket 5 is fixedly connected to the lower surface of the inner part of the feeding chamber 2, for fixing the position of the first clamping assembly 8, the second clamping assembly 9 is connected to a second bracket 6 with a bearing, the second bracket 6 is slidably connected to the lower surface of the inner part of the feeding chamber 2, for guiding and limiting the second clamping assembly 9, and the first clamping assembly 8 is located in front of the second clamping assembly 9.

[0027] See also Figure 3-4The first clamping assembly 8 and the second clamping assembly 9 both include: a driven wheel 11, connected to its corresponding bracket bearing, a first circular hole 14 is opened on the central axis of the driven wheel 11 for inserting the round tube, three fixed blocks 16 are fixedly installed on the front side of the driven wheel 11, and the front side bearing of the fixed block 16 is connected to a clamping tooth 17, and the fixed block 16 is used to limit the clamping tooth 17. A rotating shaft 18 is fixedly connected to one side of the middle front end of the clamping tooth 17. The rotating shaft 18 is used to drive the clamping tooth 17 to rotate so that one end of the three clamping teeth 17 is infinitely close to clamp the round tube. A circle of slide groove is opened on the front side of the driven wheel 11 13, the chute 13 and the first circular hole 14 are concentric circles, and a guide block 19 is slidably connected to the chute 13. The side wall of the guide block 19 is provided with three slots, and the three clamping teeth 17 extend into the interior of the guide block 19 through the three slots. The front wall of the guide block 19 is provided with three guide holes 20, and the three rotating shafts 18 are respectively inserted into the three guide holes 20, so that when the guide block 19 rotates, the rotating shaft 18 is driven to shift, and the shifted rotating shaft 18 drives the clamping teeth 17 to approach or separate from each other. A second circular hole 15 is provided on the front side wall of the guide block 19, and the second circular hole 15 is concentric with the first circular hole 14.

[0028] See also Figure 3-4 A motor 23 is fixedly connected to the front side of the driven wheel 11, and a pinion 22 is fixedly connected to the output end of the motor 23. The motor 23 is used to drive the pinion 22 to rotate. A plurality of teeth 21 are provided on the outer wall of the guide block 19. The teeth 21 are engaged with the pinion 22. The pinion 22 is used to drive the guide block 19 to rotate an angle, thereby driving the clamping teeth 17 to move to achieve automatic clamping.

[0029] See also Figure 3-4 An infrared detector 24 is fixedly mounted on the pinion 22. The infrared detectors 24 on the first clamping assembly 8 and the second clamping assembly 9 are on the same opposite surface and are used to determine each other's position by receiving infrared rays emitted by each other. The first circular hole 14 and the second circular hole 15 on the first clamping assembly 8 and the second clamping assembly 9 are both on the same central axis as the feed hole 4, which is convenient for the subsequent placement of the round tube.

[0030] See also Figure 3 A rotating assembly 7 is fixedly installed inside the feeding chamber 2, and a driving wheel 12 is fixedly installed at the output end of the rotating assembly 7. The rotating assembly 7 is used to drive the driving wheel 12 to rotate. The driving wheel 12 is engaged with the driven wheel 11 on the first clamping assembly 8 and the second clamping assembly 9, and is used to drive the first clamping assembly 8 and the second clamping assembly 9 to rotate simultaneously during cutting.

[0031] See also Figure 3 A group of telescopic rods 10 are fixedly installed on the front side of the second clamping assembly 9, and the output ends of the group of telescopic rods 10 are fixedly connected to the rear side of the first clamping assembly 8, for driving the second clamping assembly 9 to slide back and forth.

[0032] Working principle: The first clamping assembly 8 and the second clamping assembly 9 are in the default open state, and at this time the telescopic rod 10 pulls the first clamping assembly 8 and the second clamping assembly 9 to the maximum distance, and the round tube to be cut is placed into the feeding chamber 2 through the feed hole 4, and the round tube is passed through the first clamping assembly 8 and the second clamping assembly 9, and the various data to be cut are input on the control box 3. At this time, the control box 3 controls the first clamping assembly 8 and the second clamping assembly 9 to clamp the round tube, so as to simultaneously fix the front end and the middle and rear end of the round tube. At this time, the control box 3 opens the rotating assembly 7, which drives the rotating assembly 7 to drive the first clamping assembly 8 and the second clamping assembly 9 to rotate at the same time to prevent the round tube from bending due to the lack of support at the rear end of the round tube when cutting the front end of the round tube.

[0033] When the cutting of a section of round tube is completed, the control box 3 controls to release the first clamping component 8, and at the same time, according to the pre-input cutting size, controls to open the telescopic rod 10, so that the telescopic rod 10 drives the second clamping component 9 to move, and the moving second clamping component 9 gradually approaches the first clamping component 8, and sends the front end of the round tube of sufficient length out of the first clamping component 8 to facilitate the cutting of the second section. At this time, the first clamping component 8 clamps the round tube, and the second clamping component 9 releases the telescopic rod 10 of the round tube and continues to push the second clamping component 9 backward, so that during cutting, the second clamping component 9 always has a certain distance from the first clamping component 8, thereby maximizing the balance of the round tube when it rotates.

[0034] When the first clamping assembly 8 and the second clamping assembly 9 clamp the round pipe at the same time, the control box 3 turns on the two infrared detectors 24 at the same time. If the two infrared detectors 24 correspond to each other and can receive information, it means that the pipe diameters are consistent and the pipes are not bent. If the positions of the two infrared detectors 24 do not correspond and they cannot receive information from each other, it means that the front and back diameters of the pipes are inconsistent or the pipes are bent, causing one of the clamping assemblies to not completely fit the outer wall of the round pipe. At this time, the control box 3 controls the second clamping assembly 9 to move forward so that the distance between the second clamping assembly 9 and the first clamping assembly 8 is the distance required for one cutting. Measure whether a section at the front end of the round tube meets the cutting standards at this time to avoid waste. If the two infrared detectors 24 can receive each other's information at this time, it means that this section does not affect the cutting. The second clamping component 9 is reset and this section can continue to be cut. If the two infrared detectors 24 still cannot receive each other's information at this time, it means that the curvature of the round tube is large, which affects the cutting. At this time, the control box 3 issues a reminder to prevent the cutting pin from being unqualified due to the unqualified round tube, which wastes cutting time, and uses the second clamping component 9 to cooperate with the first clamping component 8 to withdraw the round tube from the feeding chamber 2 to facilitate reloading.

[0035] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pin finishing machine tool, comprising a main frame (1); A feeding chamber (2) is installed above the rear side of the main frame (1); A control box (3) is installed at the upper end of the feeding chamber (2); A set of feeding holes (4) are respectively provided on the front and rear sides of the feeding chamber (2); Its characteristics are: A feeding assembly is provided in the feeding chamber (2), and the feeding assembly comprises: A first clamping assembly (8) is installed on the front side of the feeding chamber (2); A second clamping assembly (9) is installed on the rear side of the feeding chamber (2); A first bracket (5) is fixedly connected to the inner lower surface of the feeding chamber (2), and the first bracket (5) is connected to the bearing of the first clamping assembly (8); A second bracket (6) is slidably connected to the inner lower surface of the feeding chamber (2), and the second bracket (6) is bearing-connected to the second clamping assembly (9); A set of telescopic rods (10) is installed on the front side of the second clamping assembly (9), and the output end of the set of telescopic rods (10) is fixedly connected to the rear end of the first clamping assembly (8); The first clamping assembly (8) and the second clamping assembly (9) both include: A driven wheel (11) is arranged inside the feeding chamber (2); A first circular hole (14) is provided at the center of the driven wheel (11); At least one set of fixing blocks (16) mounted on the front side of the driven wheel (11); Clamping teeth (17), mounted on the front side of the fixed block (16); A rotating shaft (18) is mounted on one side of the middle section of the front side of the clamping teeth (17); A chute (13) is provided on the front side of the driven wheel (11), wherein the chute (13) and the first circular hole (14) are concentric circles; A guide block (19), wherein the rear end of the guide block (19) is mounted on the inner surface of the slide groove (13), and one end of the clamping tooth (17) extends into the interior of the guide block (19); At least one set of guide holes (20) is formed on the front wall of the guide block (19), and the rotating shaft (18) is inserted into the guide holes (20); A second circular hole (15) is provided at the center of the guide block (19), wherein the second circular hole (15) and the first circular hole (14) are coaxially arranged, and the second circular holes (15) on the first clamping assembly (8) and the second clamping assembly (9) are also coaxially arranged; The first clamping assembly (8) and the second clamping assembly (9) further include: A motor (23) is mounted on the front side of the driven wheel (11); A pinion (22) is mounted on the output end of the motor (23); Teeth (21) are provided on the outer wall of the guide block (19), and the pinion (22) is meshed with the teeth (21) on the guide block (19); A detection assembly is mounted on the pinion (22), and the detection assembly comprises: The infrared detector (24) is mounted on the pinion (22), and the infrared detectors (24) on the first clamping assembly (8) and the second clamping assembly (9) are opposite surfaces and are used to receive infrared rays emitted by each other.

2. A pin finishing machine according to claim 1, characterized in that: A rotating assembly (7) is installed inside the feeding chamber (2), and an output end of the rotating assembly (7) is connected to a driving wheel (12), and the driving wheel (12) is meshed with a driven wheel (11).

3. A pin finishing machine according to claim 2, characterized in that: The specific steps of the feeding assembly are as follows: In the first step, the first clamping assembly (8) and the second clamping assembly (9) are in a default open state, and at this time the telescopic rod (10) pulls the first clamping assembly (8) and the second clamping assembly (9) to the maximum distance, and various data required for cutting are input on the control box (3); In the second step, the round tube is passed through the first clamping assembly (8) and the second clamping assembly (9). At this time, the control box (3) controls the first clamping assembly (8) and the second clamping assembly (9) to clamp the round tube, thereby simultaneously fixing the front end and the middle and rear end of the round tube. The third step is to open the rotating assembly (7), drive the rotating assembly (7) to drive the first clamping assembly (8) and the second clamping assembly (9) to rotate simultaneously, so as to prevent the round tube from bending due to the lack of support at the rear end of the round tube when cutting the front end of the round tube.

4. A pin finishing machine tool according to claim 3, characterized in that: The specific steps of the detection component are as follows: In the first step, when the first clamping assembly (8) and the second clamping assembly (9) simultaneously clamp the circular pipe, the control box (3) simultaneously turns on the two infrared detectors (24). If the two infrared detectors (24) correspond to each other and can receive information, it means that the pipe diameters are consistent and the pipes are not bent; In the second step, if the positions of the two infrared detectors (24) are not corresponding and they cannot receive information from each other, it means that the diameters of the front and rear of the pipe are inconsistent or the pipe is bent, causing one of the clamping components to be unable to completely fit the outer wall of the round pipe. At this time, the control box (3) controls the second clamping component (9) to move forward so that the distance between the second clamping component (9) and the first clamping component (8) is the distance required for one cutting, and detects whether the front end of the round pipe meets the cutting standard at this time to avoid waste; In the third step, if the two infrared detectors (24) still cannot receive each other's information, it means that the curvature of the round tube is large, which affects the cutting. At this time, the control box (3) issues a reminder to prevent the unqualified round tube from causing the cutting pin to be unqualified, thereby wasting cutting time; In the fourth step, the second clamping assembly (9) cooperates with the first clamping assembly (8) to withdraw the round tube from the feeding chamber (2) to facilitate re-loading.

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