Bar workpiece end face milling groove equipment

Abstract

The present application belongs to the technical field of metal processing, and particularly relates to a kind of equipment for milling groove on end face of rod workpiece. The equipment for milling groove on end face of rod workpiece, comprising a milling cutter, further comprising a driving device for supporting and driving the rotation of the rod workpiece, the driving device is matched with a detection module for detecting the existing structure of the rod workpiece, the detection module is electrically connected with the driving device, and a first pushing mechanism is arranged on one side of the driving device for pushing the milling cutter and the rod workpiece to approach or move away from each other. The present application has the advantages of automatically positioning the existing structure of the rod workpiece, thereby reducing the labor intensity of the operator and improving the production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of metal processing technology, and in particular relates to a milling device for the end face of rod-type workpieces. Background Technology

[0002] Some rod-shaped workpieces require grooves to be machined on their end faces. However, some rod-shaped workpieces have existing structures on their cylindrical surfaces (e.g., axially extending and laterally opening blank grooves), and a specific angular relationship is required between the groove and the existing structure to ensure smooth assembly of this type of rod-shaped workpiece with other components. Therefore, when machining the groove, it is necessary to position the existing structure of the rod-shaped workpiece to ensure a specific angle between the existing structure and the groove.

[0003] When positioning rod-shaped workpieces on a conventional milling machine, the operator typically rotates the workpiece and uses the fixture's limiting mechanisms to adjust its angle, thus positioning it within the existing structure. After adjustment, a milling cutter is used to mill the groove. However, when dealing with a large number of rod-shaped workpieces, manually adjusting their angles is slow, inefficient, and increases the worker's workload. Summary of the Invention

[0004] The purpose of this invention is to provide a milling device for end faces of rod-shaped workpieces that can automatically position the existing structure of rod-shaped workpieces, thereby reducing the labor intensity of operators and improving production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a milling groove device for the end face of a rod-like workpiece, including a milling cutter, and a driving device for supporting and driving the rod-like workpiece to rotate. The driving device is equipped with a detection module of an existing structure for detecting rod-like workpieces. The detection module is electrically connected to the driving device. A first pushing mechanism is provided on one side of the driving device for pushing the milling cutter and the rod-like workpiece closer to or further away from each other.

[0006] In use, the rod-like workpiece is placed on the driving device, which drives the rod-like workpiece to rotate. The detection module detects the existing structure of the rod-like workpiece. When the detection module detects the existing structure of the rod-like workpiece, it sends a command to the driving device to stop the rotation of the rod-like workpiece. Then, the first pushing mechanism pushes the milling cutter and the rod-like workpiece closer to each other, and the milling cutter processes the arc groove of the rod-like workpiece.

[0007] The detection module can be either a mechanical or electronic module. If it's a mechanical module, when the existing mechanism is a slotted mechanism, a spring pin can be used. As the rod-like workpiece rotates, the spring pin will insert into the existing structure at a certain moment, thus positioning the workpiece. If it's an electronic module, a distance sensor can be electrically connected to the drive device. When the distance sensor detects a change in distance, the existing structure is in the required position, and the drive device stops the rotation of the rod-like workpiece. The laser from the distance sensor can be projected radially onto the outer wall of the rod-like workpiece or axially onto its axial end face.

[0008] The existing structure of rod-type workpieces is detected by the detection module, thereby positioning the existing structure. This eliminates the need for operators to manually position the existing structure, resulting in higher work efficiency and reduced labor intensity.

[0009] Preferably, the driving device includes a force-applying wheel set and at least two sets of support wheel sets for supporting rod-like workpieces. Each set of support wheel sets has two support wheels that are parallel to each other in axis. The force-applying wheel set is located above the support wheel set and is used to drive the rod-like workpiece to rotate. The force-applying wheel set and the support wheel set can move closer to each other or further away from each other.

[0010] In operation, the operator places the rod-like workpiece on the support wheel assembly. Then, the force-applying wheel assembly and the support wheel assembly are brought close together, bringing the force-applying wheel assembly into contact with the workpiece. Driven by a driver, the force-applying wheel assembly rotates, thus causing the workpiece to rotate. The force-applying wheel assembly can be a high-friction rubber wheel, which can instantly drive and stop the rotation of the workpiece. The support wheel assembly can be a bearing or a rotating wheel, designed to reduce friction with the workpiece.

[0011] The method of clamping rod-like workpieces using force-applying wheel sets and support wheel sets will not damage the outer surface of the rod-like workpieces, and the method of clamping rod-like workpieces is more convenient than using a chuck.

[0012] Preferably, one side of the support wheel assembly is provided with a gripper for clamping rod-shaped workpieces. The gripper is equipped with a gripper extension and retraction drive mechanism. The gripper extension and retraction drive mechanism drives the gripper to move closer to or away from the rod-shaped workpiece. The first pushing mechanism directly or indirectly pushes the gripper extension and retraction drive mechanism to make the rod-shaped workpiece on the gripper move closer to or away from the milling cutter.

[0013] The gripper picks up the pre-positioned rod-like workpiece and moves it away from the support wheel assembly. The first pushing mechanism can directly drive the gripper extension and retraction drive mechanism, causing the gripper and the gripper to translate, bringing the rod-like workpiece closer to the milling cutter. Alternatively, the first pushing mechanism can directly push the rod-like workpiece; due to the friction between the workpiece and the gripper, the gripper extension and retraction drive mechanism translates, bringing the workpiece closer to the milling cutter. The first pushing mechanism can also push the milling cutter closer to the rod-like workpiece. By setting up the gripper, two workstations are provided. While the gripper clamps the rod-like workpiece and performs milling, the detection module can position the next rod-like workpiece, resulting in higher production efficiency.

[0014] Preferably, the worktable is provided with a second pushing mechanism that directly pushes the gripper extension mechanism to move closer to or away from the milling cutter side. The first pushing mechanism is used to push the rod-like workpiece on the gripper to the milling cutter. The pushing directions of the first pushing mechanism and the second pushing mechanism are parallel, and the first pushing mechanism and the second pushing mechanism move synchronously.

[0015] When the axial end face of a rod-shaped workpiece contacts the milling cutter, the workpiece is subjected to axial force and may move slightly axially relative to the gripper. This movement affects the machining dimensions of the arc groove. To prevent relative movement between the gripper and the workpiece, a second pushing mechanism and a first pushing mechanism simultaneously push the gripper extension mechanism and the workpiece, respectively, thereby preventing relative movement and increasing the machining accuracy of the arc groove. The first and second pushing mechanisms can be stroke cylinders with the same air source, or electric push rods with the same controller, etc.

[0016] Preferably, the detection module is an electronic detection module, which includes a data transmission module, and the driver of the force-applying wheel assembly is equipped with a control module for receiving signals from the data transmission module and controlling the rotation of the driver of the force-applying wheel assembly.

[0017] If a mechanical detection module, such as a spring pin, is used, the high rotation speed of the rod-like workpiece may cause it to collide with the side wall of the existing structure when it inserts into it, resulting in damage. However, an electronic detection module, such as a distance sensor or photoelectric sensor, can be used for high-speed rotation of rod-like workpieces and can prevent collisions between the existing structure and the detection module. When the electronic detection module detects the existing structure, the data transmission module transmits a signal to the control module. The control module converts the signal into a pulse signal, which can control the rotation or stop of the actuator, or control the actuator to rotate again by a certain angle so that the existing structure reaches the specified angle.

[0018] Preferably, a mating block is provided between the gripper and the milling cutter, and the mating block is provided with a guide hole for guiding the rod-shaped workpiece. The wall of the guide hole is provided with a straightening protrusion or straightening groove for mating with an existing structure.

[0019] Since both the drive wheel assembly and the rod-like workpiece have inertia, when the drive unit stops rotating the drive wheel assembly and when the drive wheel assembly stops rotating the rod-like workpiece, both the drive wheel assembly and the rod-like workpiece will have a certain positional deviation due to inertia. In order to further ensure the machining accuracy of the existing structure, when the first push mechanism and the second push mechanism push the rod-like workpiece and the clamping jaw toward the milling cutter, if the existing structure is a groove, the correction protrusion extends into the groove; if the existing structure is a protrusion, the protrusion extends into the correction groove, thereby correcting and positioning the existing structure and improving accuracy.

[0020] Preferably, the corrective protrusion or corrective groove includes a wide section and a narrow section sequentially from the milling cutter side to the gripper side. The narrow section is used to guide the existing structure, and the wide section is used to contact the inner or outer wall of the existing structure.

[0021] By setting a narrow segment to guide the existing structure, the angular deviation of the existing structure prevents the correction protrusion or groove from properly engaging with it. Furthermore, when the existing mechanism is a groove, the wide segment contacts the inner wall of the existing structure; when the existing mechanism is a protrusion, the wide segment contacts the outer wall. The wide segment is used to perform the final angular correction of the existing structure.

[0022] Preferably, the support wheel assembly is equipped with a third pushing mechanism for pushing rod-like workpieces to the position to be gripped by the clamping jaws.

[0023] Since the exact position of the rod-shaped workpiece cannot be guaranteed after it is placed on the support wheel assembly, a mechanism is needed to ensure accurate gripping by the clamping jaws, thereby maximizing the machining amount of the milling cutter when machining the groove on the end face of the rod-shaped workpiece. The first, second, and third pushing mechanisms can be electric push rods or stroke cylinders, etc.

[0024] Preferably, the support wheel assembly is equipped with several support seats, each of which has an upward-opening support groove. The several support seats are spaced apart along the pushing direction of the third pushing mechanism, and the highest point of the support wheel assembly is higher than the lowest point of the support groove.

[0025] The wall of the support groove can contact the side wall of the rod-like workpiece when it is placed, thereby preventing the rod-like workpiece from falling off the support wheel set; the highest point of the support wheel set is higher than the lowest point of the support groove, ensuring that the rod-like workpiece is supported on the support wheel set and reducing the friction when the rod-like workpiece rotates.

[0026] Preferably, the force-applying wheel set includes a bracket for fixing the force-applying wheel, the driver of the force-applying wheel set is fixed on the bracket, the number of the force-applying wheel sets is at least two sets, each set of the force-applying wheel set is connected to the output end of the driver through a transmission wheel, and all transmission wheels are connected through the same linkage shaft.

[0027] At least two sets of force-applying wheel groups make the rotation of rod-like workpieces more stable. By setting the same linkage shaft, the rotation speed of each transmission wheel is ensured to be the same, so that the rotation speed of the force-applying wheel groups is the same, thus ensuring that the rotation of rod-like workpieces is more stable.

[0028] The present invention has the following advantages: it automatically positions the existing structure of rod-type workpieces, thereby reducing the labor intensity of operators and improving production efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the force-applying wheel assembly and the support wheel assembly of the present invention.

[0031] Figure 3 for Figure 2 A structural diagram during operation.

[0032] Figure 4 This is a structural diagram of the process for machining the end face of rod-type workpieces.

[0033] Figure 5 A schematic diagram of the structure of the guide hole on the mating block.

[0034] Figure 6 This is a schematic diagram of the gripper structure.

[0035] Figure 7 This is a structural schematic diagram of the rod-like workpiece in this implementation.

[0036] Reference numerals: 1. Workbench; 11. Feeding trough; 2. Lifting block; 3. Support base; 31. Support wheel assembly; 311. Support groove; 32. Third pushing mechanism; 33. Second lifting drive mechanism; 4. First lifting drive mechanism; 41. Bracket; 42. Driver; 421. Driver output end; 43. Transmission wheel; 43. Linkage shaft; 431. Force application wheel assembly; 5. Mating block; 51. Guide hole; 52. Correction protrusion; 52. Wide section; 521. Narrow section; 522. Electronic detection module; 6. First pushing mechanism; 7. Second pushing mechanism; 71. Grip extension drive mechanism; 72. Grip; 8. Milling cutter; 100. Rod-type workpiece; 200. Blank groove; 201. Arc groove; 202. Detailed Implementation

[0037] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 7 As shown, the rod-like workpiece 200 in this embodiment is a tungsten alloy tube. The outer circular wall of the tungsten alloy tube is provided with a blank groove 201 (existing structure) that extends axially through both ends of the tungsten alloy tube and opens laterally. An arc groove 202 (groove) needs to be machined at one end face of the tungsten alloy tube, and the arc groove 202 has a specific angular relationship with the blank groove 201.

[0039] like Figures 1 to 3 As shown, this embodiment discloses a milling device for the end face of rod-shaped workpieces. A worktable 1 has a feeding trough 11 on its front side. The feeding trough 11 has an inclined plate (not shown in the figure). The lower end of the inclined plate is connected to a lifting block 2. The lower end of the lifting block 2 is connected to the output end of a second lifting drive mechanism 33. The second lifting drive mechanism 33 is a stroke cylinder that drives the lifting block 2 to rise and fall. Four support seats 3 are provided at the top of the lifting block 2, spaced linearly in the left-right direction. Each support seat 3 has an upward-opening support groove 311 that extends in the left-right direction and passes through both ends of the support seat 3. The inner circular cross-section of the support groove 311 is U-shaped. Support wheel sets 31 are provided at the openings at both ends of the support groove 311. Each support wheel set 31 has two axially parallel and independently rotating support wheels, which are bearings. The highest point of the support wheel is higher than the lowest point of the support groove 311. A rotating shaft (not shown in the figure) passing through the center of the support wheel is provided on the support seat 3 to achieve a rotatable connection between the support wheel and the support seat 3. A third pushing mechanism for pushing the rod-type workpiece 200 is provided on the right side of the support base 3. The third pushing mechanism is a stroke cylinder.

[0040] A bracket 41 is provided above the support wheel assembly. The bracket 41 includes a top plate and two side plates. The top plate of the bracket 41 is connected to the output end of the first lifting drive mechanism 4, which is a stroke cylinder. The first lifting drive mechanism 4 drives the bracket 41 to rise and fall. A driver 42 is fixed to the bracket 41. The output end of the driver 42 extends through the two side plates and meshes with a transmission wheel 43. The two transmission wheels 43 are connected by a linkage shaft 431. The lower end of the transmission wheels 43 is connected to a force-applying wheel assembly 44, which consists of two axially parallel and independently rotating force-applying wheels. The force-applying wheels are rubber wheels. The driver 42 drives the force-applying wheels to rotate through the transmission wheels 43. The diameter of the transmission wheel 43 is larger than the diameter of the force-applying wheels. An electronic detection module 6 is also fixed on the bracket 1. The electronic detection module 6 is any existing distance sensor capable of detecting the blank groove. The electronic detection module 6 includes a data transmission module (not shown in the figure). The driver 42 of the force-applying wheel assembly 44 is equipped with a control module (not shown in the figure) for receiving signals from the data transmission module (not shown in the figure) and controlling the rotation of the driver of the force-applying wheel assembly. The control module is any existing PLC control system.

[0041] like Figure 1 and Figure 6 As shown, two grippers 8 are provided on the rear side of the force-applying wheel assembly. The two grippers 8 are spaced apart in the left-right direction. Both grippers 8 are cylinder grippers. The rear end of the grippers 8 is fixedly connected to the output end of the gripper extension drive mechanism 72, which is a stroke cylinder. A second pushing mechanism is provided on the worktable, and the gripper extension drive mechanism 72 is fixed to the output end of the second pushing mechanism 71. A first pushing mechanism 7 is provided on the rear side of the third pushing mechanism 32 for pushing the rod-like workpiece 200 held by the grippers 8 to move. The pushing directions of the first pushing mechanism 7, the second pushing mechanism 71, and the third pushing mechanism 32 are all in the left-right direction. Among them, the first pushing mechanism 7 and the second pushing mechanism 71 use the same air source.

[0042] like Figure 4 and Figure 5 As shown, a milling cutter 100 is provided on the left side of the worktable. A mating block 5 is provided between the milling cutter 100, the gripper 8, and the support base 3. The mating block 5 is provided with a guide hole 51 that runs through the left and right directions. A straightening protrusion 52 extending downward is provided on the inner wall of the guide hole 51. The straightening protrusion 52 includes a wide section 521 and a narrow section 522 from left to right. The narrow section 522 is used to guide the blank groove 201 of the rod-like workpiece 200, and the wide section 521 is used to contact the groove wall of the blank groove 201 of the rod-like workpiece 200.

[0043] In use, the second lifting drive mechanism 33 drives the lifting block 2 to descend, causing the rod-like workpiece 200 in the loading trough 11 to roll onto the support seat 3 of the lifting block 2. The second lifting drive mechanism 33 then drives the lifting block 2 to rise to a set position. After that, the third pushing mechanism 32 pushes the rod-like workpiece 200 to move to the left to a set position. Then, the first lifting drive mechanism drives the bracket 41 to descend, causing the force-applying wheel group 44 to contact the rod-like workpiece 200. The driver 42 drives the force-applying wheel group 44 to rotate, causing the rod-like workpiece 200 to rotate. At the same time, the electronic detection module 6 detects the blank groove of the rod-like workpiece 200. When the electronic detection module 6 detects the blank groove, the data control module transmits the detection data to the control module. The control module controls the driver to stop rotating, causing the rod-like workpiece 200 to stop rotating. Then, the control module sends a pulse signal, causing the driver to rotate at a set angle, so that the groove opening of the blank groove of the rod-like workpiece 200 faces vertically upward. After the blank groove is positioned, the gripper extension mechanism 72 drives the gripper to approach the rod-like workpiece 200 and clamps the rod-like workpiece 200 through the gripper 8. Then, the first lifting drive mechanism drives the bracket 41 to rise, and the gripper extension mechanism 72 drives the gripper to move away from the bracket 41 to the set position. Then, the first pushing mechanism 7 pushes the rod-like workpiece 200 on the gripper 8, and the second pushing mechanism 71 pushes the gripper extension mechanism 72 to achieve synchronous movement of the rod-like workpiece 200 and the gripper 8. The rod-like workpiece 200 passes through the guide hole 51, and the straightening protrusion 52 straightens the blank groove of the rod-like workpiece 200. Finally, the end face of the rod-like workpiece 200 contacts the milling cutter 100, thereby completing the arc groove machining of the rod-like workpiece 200.

Claims

1. A device for milling a groove on an end face of a bar-like workpiece, comprising a milling cutter and a worktable, characterized in that: It also includes a drive device for supporting and driving the rotation of rod-like workpieces. The drive device is equipped with a detection module of an existing structure for detecting rod-like workpieces. The detection module is electrically connected to the drive device. A first pushing mechanism is provided on one side of the drive device for pushing the milling cutter and the rod-like workpieces closer to or further apart from each other. The driving device includes a force-applying wheel set and at least two sets of support wheel sets for supporting rod-like workpieces. Each set of support wheel sets has two support wheels that are parallel to each other in axis. The force-applying wheel set is located above the support wheel set and is used to drive the rod-like workpiece to rotate. The force-applying wheel set and the support wheel set can move closer to each other or further away from each other. One side of the support wheel assembly is provided with a gripper for clamping rod-shaped workpieces. The gripper is equipped with a gripper extension and retraction drive mechanism. The gripper extension and retraction drive mechanism drives the gripper to move closer to or away from the rod-shaped workpiece. The first pushing mechanism directly or indirectly pushes the gripper extension and retraction drive mechanism to make the rod-shaped workpiece on the gripper move closer to or away from the milling cutter. The worktable is equipped with a second pushing mechanism that directly pushes the jaw extension mechanism to move closer to or away from the milling cutter side. The first pushing mechanism is used to push the rod-like workpiece on the jaw to the milling cutter. The pushing directions of the first and second pushing mechanisms are parallel, and the first and second pushing mechanisms move synchronously. A mating block is provided between the jaw and the milling cutter. The mating block is provided with a guide hole for guiding the rod-like workpiece. The wall of the guide hole is provided with a straightening protrusion or straightening groove for mating with the existing structure. The straightening protrusion or straightening groove includes a wide section and a narrow section from the milling cutter side to the jaw side. The narrow section is used to guide the existing structure, and the wide section is used to contact the inner or outer wall of the existing structure.

2. The milling device for end faces of rod-type workpieces according to claim 1, characterized in that: The detection module is an electronic detection module, which includes a data transmission module. The driver of the force-applying wheel assembly is equipped with a control module for receiving signals from the data transmission module and controlling the rotation of the driver of the force-applying wheel assembly.

3. The milling equipment for end faces of rod-type workpieces according to claim 1, characterized in that: The support wheel assembly is equipped with a third pushing mechanism for pushing rod-like workpieces to the position to be gripped by the clamping jaws.

4. The milling groove equipment for the end face of rod-type workpieces according to claim 3, characterized in that: The support wheel assembly is equipped with several support seats, each of which has an upward-opening support groove. The several support seats are spaced apart along the pushing direction of the third pushing mechanism, and the highest point of the support wheel assembly is higher than the lowest point of the support groove.

5. The milling device for end faces of rod-type workpieces according to any one of claims 2 to 4, characterized in that: The force-applying wheel assembly includes a bracket for fixing the force-applying wheel, and the driver of the force-applying wheel assembly is fixed on the bracket. The number of force-applying wheel assemblies is at least two. Each set of force-applying wheel assemblies is connected to the output end of the driver through a transmission wheel, and all transmission wheels are connected through the same linkage shaft.

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