A cutting tool for metal workpieces

Abstract

This invention relates to the field of cutting device technology, specifically to a cutting fixture for metal workpieces, comprising a body, a positioning mechanism, and a cutting mechanism. The positioning mechanism includes a driving component for moving a tubular workpiece. The driving component can be fitted onto one end of a tubular workpiece of any size and pushes the workpiece to move on the body. Several abutting components are located within the driving component, which can abut against the inner end face of the tubular workpiece. The cutting mechanism includes a first cutter and a second cutter. This invention achieves the purpose of unidirectional transmission of the metal tube by using a moving driving component to fix and limit a long section of metal tube through an alignment component and a driving component. After the first cutter cuts the metal tube, the second cutter moves with the first cutter to cut the cut surface vertically, removing burrs in all directions and making the workpiece's cut surface smooth. This not only achieves automated cutting but also reduces subsequent processes and improves the cutting effect of the finished workpiece.

Description

Technical Field

[0001] This invention relates to the field of cutting device technology, and more specifically to a cutting fixture for metal workpieces. Background Technology

[0002] Tubular metal workpieces are hollow cylindrical metal fittings that utilize a unique internal cavity structure as a key load-bearing structure. Currently, the most common cutting method for small to medium diameter hollow metal tubes is to stabilize the metal part with one hand and then use a cutting machine to cut the metal tube.

[0003] Existing cutting methods have many inconveniences. First, manual cutting is inefficient, especially in terms of the time spent placing the workpiece in the predetermined cutting position. In addition, misalignment is prone to occur during alignment, resulting in a tilted cut surface that affects the cutting quality. Furthermore, after longitudinal cutting, burrs will appear on the lower part of the cut surface due to various factors. These burrs are mostly present at the lower end of the cut surface and are not completely detached from it, requiring additional cleaning of the cut surface for subsequent use of the metal tube, which is particularly time-consuming and labor-intensive.

[0004] Therefore, a cutting fixture for metal workpieces is proposed to solve the problems mentioned above. Summary of the Invention

[0005] Technical problems to be solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a cutting fixture for metal workpieces, which can effectively solve the problems of cutting efficiency and burrs on the cut surface that cannot be solved in the prior art.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: This invention provides a cutting fixture for metal workpieces, including a body for supporting the overall structure; The positioning mechanism includes a driving component that can be guided and moved on the machine body. The driving component fixes one end of the tubular workpiece by an abutment provided at one end. Each abutment can move radially along the driving component, and one end of the abutment always abuts against the end face of the tubular workpiece and applies a certain abutting force. The cutting mechanism includes a first cutter and a second cutter. The first cutter is located directly above the workpiece and can move toward the workpiece to cut. The second cutter can move along the cut surface of the workpiece after the first cutter has cut and gradually increase the contact force to cut burrs off the cut surface.

[0007] Furthermore, several of the contacting elements are circumferentially distributed, and the contact surface between each contacting element and the workpiece is set as a rough surface, while it can move radially toward the axis of the driving element.

[0008] Furthermore, the driving component also includes a resistance component. The driving component has a groove at the movement trajectory of each contacting component, and the resistance component is located in each groove at one end facing the contacting component.

[0009] Furthermore, the driving component also includes a locking component, which is rotatably mounted on the driving component. Several locking rods are distributed on the locking component, each of which is located on one side of the contact component and can lock onto the contact component when the contact component stops moving, thereby restricting the radial movement of the contact component on the driving component.

[0010] Furthermore, the positioning mechanism also includes an alignment member, which is located on the other side of the machine body corresponding to the driving member. The alignment member has a cavity facing the direction of the tubular workpiece. Several circumferentially arranged clamping arms are hinged in the cavity. Each clamping arm is inclined towards the cavity and can apply a resisting force to the outer end of the workpiece when the workpiece passes through the middle of the cavity.

[0011] Furthermore, the first cutting tool can be raised and lowered above the machine body, and the second cutting tool rises and falls with the first cutting tool and is located on one side of the first cutting tool. The second cutting tool includes a bracket and a cutting tool. A sliding groove is provided on the machine body. The bracket can move and extend within the sliding groove as the first cutting tool moves, and can be guided to slide in the direction of the workpiece cutting section when the first cutting tool rises. The cutting tool is elastically hinged to the bracket, and the top of the cutting tool is inclined to the workpiece section and can apply a resisting force to the contact part. The resisting force can increase as the bracket moves in the direction of the workpiece.

[0012] Furthermore, the second cutting tool also includes a limiting member, which is located on one side of the sliding groove and on the side of the tool rotating toward the workpiece cross-section. The limiting member includes a limiting part and a disengaging part sequentially from bottom to top. The limiting part extends upward along the side wall of the sliding groove and always abuts against one end of the tool. The thickness of the disengaging part is less than that of the limiting part, and it can stop contacting the tool when the tool moves to the disengaging part, allowing the elastic potential energy accumulated by the tool to be released.

[0013] Furthermore, the second cutting tool also includes an adjusting member, which is located below the support and threaded into the support to adjust the distance between the support and the workpiece.

[0014] Beneficial effects The technical solution provided by this invention has the following advantages compared with known public technologies: This invention achieves unidirectional transmission of a long metal tube by using a moving drive component to fix and limit the tube through an alignment component and a drive component. After the metal tube is cut by a first cutter, a second cutter moves with the first cutter to cut the cut surface vertically, removing burrs in all directions and making the workpiece surface smooth. This not only achieves automated cutting but also reduces subsequent processes and improves the cutting effect of the finished workpiece. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 This is a side view of the overall structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the driving component structure in an embodiment of the present invention; Figure 4 As described in the embodiments of the present invention Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the locking component structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the alignment component structure in an embodiment of the present invention; Figure 7 This is a schematic diagram of the second cutting tool structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the second cutter in the descending state in an embodiment of the present invention; Figure 9 This is a schematic side cross-sectional view of the second cutting tool in an embodiment of the present invention; Figure 10 This is an exploded view of the second cutting tool in an embodiment of the present invention; Figure 11 This is a schematic diagram of the connecting frame structure of the present invention.

[0017] The labels in the diagram represent: 1. Body; 11. Sliding groove; 2. Positioning mechanism; 21. Driving component; 211. Abutting component; 212. Sliding groove; 213. Resistance component; 214. Locking component; 215. Locking rod; 22. Alignment component; 221. Locking arm; 222. Torsion spring; 223. Arc-shaped patch; 3. Cutting mechanism; 31. First cutter; 32. Second cutter; 321. Support; 322. Cutting tool; 323. Limiting component; 324. Adjusting component; 325. Lifting bar. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example: A cutting fixture for metal workpieces, including a body 1 for supporting the overall structure; The machine body 1 is provided with a positioning mechanism 2, which includes a driving component 21 for moving the tubular workpiece. The driving component 21 is generally circular and can be guided and moved on the machine body 1. It is connected to the machine body 1 through a slide rail and slide groove. The driving component 21 can be fitted onto one end of a tubular workpiece of any size and push the workpiece to move on the machine body 1. In this example, the machine body 1 has a limited display area. Five abutting components 211 are provided at one end of the driving component 21 in a circular arrangement. The five abutting components 211 can abut against the inner end face of a hollow tubular workpiece of any diameter and can provide a resisting force towards the contact end face of the workpiece.

[0021] The contact element 211 is in the shape of an arc block. Several rubber protrusions are regularly distributed on the outer end of each contact element 211. When the workpiece is fitted onto the outer end of the five contact elements 211, the tangential friction between the contact element 211 and the workpiece is increased by the protrusions. At the same time, a contact plate is vertically provided on one side of the protrusion to provide a bearing point for the end wall of the workpiece.

[0022] Meanwhile, five grooves 212 are provided on the end face of the drive member 21 at the position of the contact member 211. Each groove 212 is opened in the radial direction of the drive member 21, and a sliding shaft is inserted inside each groove. The contact member 211 slides on the sliding shaft. A resistance member 213 is provided in the groove 212 facing the contact member 211. The resistance member 213 includes a return spring sleeved on the sliding shaft. When the contact member 211 gradually moves towards the middle of the drive member 21, it will continuously compress the return spring. The return spring contracts and gives the contact member 211 a radial resistance force, making the drive member 21 and the workpiece fit more tightly.

[0023] A locking component 214 is also provided on the driving component 21. The locking component 214 is rotatably mounted on the driving component 21. Several locking rods 215 are distributed on the locking component 214. Each locking rod 215 is located on one side of the contact component 211. Three semi-circular locking holes are opened on the locking rod 215 along the radial direction of the driving component 21. The locking holes can be locked on the outer part of the contact component 211 located in the slide groove 212. When each contact component 211 is locked on the inner end face of the workpiece, the locking component 214 can be rotated to make each locking rod 215 lock on the contact component 211, restricting the radial movement of the contact component 211 and further improving the fastening strength between it and the workpiece.

[0024] The positioning mechanism 2 also includes an alignment member 22. The alignment member 22 is circular in shape and is located on the other side of the machine body 1 corresponding to the driving member 21. The alignment member 22 has a cavity facing the tubular workpiece. Four slots are located in the cavity and are arranged in a circle. Each slot is hinged with a locking arm 221. A torsion spring 222 is provided at the connection between the locking arm 221 and the alignment member 22. Each locking arm 221 is inclined towards the cavity and can apply a resisting force to the outer end of the workpiece when the workpiece passes through the middle of the cavity. The inclined locking arm 221 can adapt to workpieces of different diameters. At the same time, an arc-shaped patch 223 is provided on each side of the middle of the machine body 1. The end of each arc-shaped patch 223 facing the workpiece is arc-shaped and elastically extends and retracts on the machine body 1.

[0025] In use, one end of the workpiece is passed through the alignment member 22 and then fixed to the drive member 21. After the workpiece is fixed by the abutment member 211, the drive member 21 can be moved to guide the workpiece on the machine body 1. The drive member 21 can move in various ways, which are not limited in this example. When it moves to the appropriate position, the cutting mechanism 3 on the machine body 1 is activated to cut the workpiece and remove the burrs on the cut surface. The cut workpiece is detached from the alignment member 22, and the drive member 21 is driven to move again to move the workpiece towards the alignment member 22 for automated cutting.

[0026] The cutting mechanism 3 specifically includes a first cutter 31 and a second cutter 32. The first cutter 31 is located directly above the workpiece and can move towards the workpiece to cut. It can also be raised and lowered via a connecting frame. When cutting is required, the first cutter 31 is moved towards the workpiece. After cutting, the first cutter 31 returns to its original position and separates from the workpiece. The second cutter 32 can move along the cut surface of the workpiece after the first cutter 31 has cut it and gradually increase the contact force to cut the burrs on the cut surface.

[0027] The first cutting tool 31 can be raised and lowered and installed above the machine body 1. The raising and lowering of the connecting frame is a known technology and is not described in detail in this example. The illustration is only a simplified representation. At the same time, the cutting part of the first cutting tool 31 is not limited. The appropriate cutting tool can be selected according to the material of the actual workpiece. The second cutting tool 32 rises and falls with the first cutting tool 31 and is located on one side of the first cutting tool 31. The second cutting tool 32 includes a bracket 321 and a cutter 322. A sliding groove 11 is opened on the machine body 1 along its vertical direction. A guide shaft is vertically inserted on both sides of the sliding groove 11. The bracket 321 is sleeved on the two guide shafts and can move and extend. The bracket 321 can move and extend with the movement of the first cutting tool 31. When the first cutting tool 31 rises, it slides towards the cutting cross-section of the workpiece until the cutter 322 rubs and cleans the cross-section of the workpiece.

[0028] The two ends of the cutting tool 322 are elastically hinged to the support 321. The connection is also equipped with a torsion spring. The top of the cutting tool 322 is inclined to the cross-section of the workpiece and can apply a resisting force to the contact part. The resisting force can increase as the support 321 moves towards the workpiece. The lower two sides of the support 321 are respectively connected to a lifting bar 325 by a spring. Both the spring and the lifting bar 325 slide on the guide shaft.

[0029] An adjusting component 324 is provided below the bracket 321 and is rotatably mounted on the machine body 1. Specifically, it includes a lead screw shaft that passes through the lifting bar 325 and is threadedly engaged with the lifting bar 325. Thus, the limit movement distance between the bracket 321 and the workpiece can be achieved by rotating the adjusting component 324.

[0030] In this example (attached) Figure 11 The bracket 321 has a shaft extending from each end, which is connected to the connecting frame that controls the lifting and lowering of the first cutter 31 via a fixed bracket. When cutting, the connecting frame moves down, and the first cutter 31 first cuts the workpiece, cutting it into two sections. At this time, the fixed bracket pushes the bracket 321 down, and the spring connecting the bracket 321 and the lifting bar 325 moves as shown in the attached diagram. Figure 7As shown, compression occurs, at which point the entire support 321 moves downwards until it begins to reset after the first cutter 31 has cut. Under the traction of the connecting frame, the support 321 rises, and the cutter 322 begins to contact the workpiece cross-section and rub against it, performing preliminary cutting and cleaning of burrs. A limiting member 323 is provided on one side of the support 321. The limiting member 323 is located on one side of the sliding groove 11 and on the side of the cutter 322 facing the workpiece cross-section rotation direction. The limiting member 323 includes a limiting part and a disengaging part sequentially from bottom to top. The limiting part extends upwards along the side wall of the sliding groove 11 and always abuts against one end of the cutter 322. The thickness of the disengaging part is less than that of the limiting part and can be released when the cutter 322 moves to the disengaging part. When the tool 322 is no longer in contact, the elastic potential energy accumulated at both ends of the tool 322 is released. When the support 321 rises to the limiting part, the limiting part limits one end of the tool 322. When it reaches the disengagement part, the elastic potential energy of the tool 322 from the torsion spring is released, which increases the connection force between the tip of the tool 322 and the cross-section. At this time, the connecting frame is controlled to move down again until the tool 322 is disengaged from the workpiece cross-section. At this time, the connecting frame is controlled to return to the initial state, completing the entire cross-section cleaning process. The spring connecting the support 321 and the lifting bar 325 assists the support 321 in resetting and provides the rebound force after compression, increasing the speed of the support 321 as it rises with the connecting frame.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutting fixture for metal workpieces, characterized in that, include: Organism; The positioning mechanism includes a driving member that can be guided and moved on the machine body. The driving member is fixed to one side of the tubular workpiece by an abutment provided at one end. Each abutment can move radially along the driving member, and one end of the abutment always abuts against the end face of the tubular workpiece and applies a certain abutting force. The cutting mechanism includes a first cutter and a second cutter. The first cutter is located directly above the tubular workpiece and can move toward the workpiece to cut it. The second cutter can move along the cut surface of the workpiece after the first cutter has cut it and gradually increase the contact force to cut burrs off the cut surface.

2. The cutting fixture for metal workpieces according to claim 1, characterized in that, Several of the aforementioned contacting elements are arranged in a circular pattern, and the contact surface between each contacting element and the workpiece is set as a rough surface.

3. The cutting fixture for a metal workpiece according to claim 2, characterized in that, The driving component also includes; The driving component has a groove on each contacting component at the movement trajectory of each contacting component, and the resistance component is located in each groove at one end facing the contacting component.

4. The cutting fixture for a metal workpiece according to claim 2, characterized in that, The driving component also includes: A locking component is rotatably mounted on the driving component. Several locking rods are distributed on the locking component, each of which is located on one side of the contact component and can lock onto the contact component when the contact component stops moving, thereby restricting the radial movement of the contact component on the driving component.

5. The cutting fixture for a metal workpiece according to claim 4, characterized in that, The positioning mechanism also includes: The alignment component is located on the other side of the machine body corresponding to the drive component. The alignment component has a cavity facing the direction of the tubular workpiece. Several circumferentially arranged clamping arms are hinged in the cavity. Each clamping arm is inclined towards the cavity and can apply a resisting force to the outer end of the workpiece when the workpiece passes through the middle of the cavity.

6. The cutting fixture for a metal workpiece according to claim 1, characterized in that, The first cutter is vertically and retractably mounted above the machine body. The second cutter rises and falls with the first cutter and is located on one side of the first cutter. The second cutter includes: The bracket has a sliding groove on the machine body. The bracket can move and extend within the sliding groove as the first cutter moves, and can be guided to slide in the direction of the workpiece cutting section when the first cutter rises. The cutting tool is elastically hinged to the support, and the tip of the cutting tool is inclined to the cross-section of the workpiece and can apply a resisting force to the contact part. The resisting force can increase as the support moves toward the workpiece.

7. The cutting fixture for a metal workpiece according to claim 6, characterized in that, The second cutting tool also includes: A limiting component is provided on one side of the sliding groove and located on the side of the tool rotating towards the workpiece cross-section. The limiting component includes a limiting part and a disengaging part sequentially from bottom to top. The limiting part extends upward along the side wall of the sliding groove and always abuts against one end of the tool. The thickness of the disengaging part is less than that of the limiting part, and it can stop contacting the tool when the tool moves to the disengaging part, allowing the elastic potential energy accumulated by the tool to be released.

8. The cutting fixture for a metal workpiece according to claim 6, characterized in that, The second cutting tool also includes: An adjusting component is located below the support and threadedly engaged with the support to adjust the distance between the support and the workpiece.

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