A CNC double-hole chamfering machine for centrifugal block chamfering

Abstract

The utility model relates to a CNC double-hole chamfering machine for chamfering centrifugal blocks, including a frame, a workbench, a feeding mechanism, a chamfering positioning structure, a product collecting structure, a product chamfering mechanism, and a position adjustment structure is arranged on the chamfering positioning structure, and the position adjustment structure is used to adjust the centers of two holes to be chamfered of the product to the same horizontal line; the product chamfering mechanism includes a left chamfering device and a right chamfering device arranged on the workbench; the left chamfering device and the right chamfering device can both reciprocate along the X-axis and the Y-axis; the left chamfering device, the right chamfering device and the chamfering positioning structure are adapted to simultaneously chamfer the two ends of the same hole to be chamfered of the product. The utility model can effectively solve the problem that when there are multiple holes in the existing centrifugal block that need to be double-sided chamfered, it needs to be achieved by multiple double-sided chamfering machines, which leads to high equipment cost, low processing efficiency, complex operation, high labor intensity and high labor cost.

Description

Technical Field

[0001] The utility model relates to the field of double-hole chamfering, in particular to a numerically controlled double-hole chamfering machine for chamfering centrifugal blocks. Background Art

[0002] At present, when a centrifugal block has multiple holes that need to be double-sided chamfered, because the holes of the centrifugal block are at different positions, when using a double-sided chamfering machine with an existing structure, because the chamfering drill of the double-sided chamfering machine can only move in the X-axis and Y-axis directions, if the center of the hole is not located on the same horizontal plane, it is impossible to chamfer different holes by adjusting only one of the X-axis or Y-axis directions at the same time. If one device is required to achieve this, and after completing the chamfering of a hole, it is necessary to move in the X-axis and Y-axis directions while also moving in the Z-axis direction to achieve the chamfering of another hole. In this case, there are precision requirements for the three axes of X, Y, and Z, and the equipment cost is very high.

[0003] The existing double-sided chamfering machines can usually only perform X-axis and Y-axis movements to control the chamfering position, so they cannot meet the needs of double-hole chamfering in centrifugal machines. A double-sided chamfering machine is required to achieve chamfering for each hole.

[0004] For example, when two holes need to be chamfered, it is necessary to set up a double-sided chamfering machine to achieve double-sided chamfering of the first hole, and then set up another double-sided chamfering machine to achieve double-sided chamfering of the second hole.

[0005] There is another situation where two chamfering drill bits are installed at the same time to chamfer two holes at the same time. This requires relatively high precision of the equipment, and because the positions of the two chamfering drill bits are fixed, they can only meet the chamfering needs of one product, with poor versatility and high equipment cost.

[0006] When two or more chamfering devices are used to achieve double hole chamfering, not only is the equipment cost high, but each device also requires a dedicated person to be responsible for it, which results in high labor costs. In addition, loading and unloading, material handling, and other operations are required from one set of double-sided chamfering machines to another set of double-sided chamfering machines, which further increases labor costs and equipment costs for handling equipment. At the same time, the back-and-forth handling results in low processing efficiency. Utility Model Content

[0007] In view of the shortcomings of the prior art, the utility model provides a CNC double-hole chamfering machine for chamfering centrifugal blocks, which can effectively solve the problem that when the existing centrifugal blocks have multiple holes that need to be double-sided chamfered, it is necessary to use multiple double-sided chamfering machines to achieve it, which in turn causes high equipment cost, low processing efficiency, complex operation, high labor intensity and high labor cost.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a CNC double-hole chamfering machine for chamfering centrifugal blocks, comprising a frame, a workbench arranged on the frame, a feeding mechanism arranged on the workbench, a chamfering positioning structure adapted to the discharging end of the feeding mechanism, a product collecting structure arranged behind the chamfering positioning structure, and a product chamfering mechanism adapted to the chamfering positioning structure, characterized in that: a position adjustment structure is arranged on the chamfering positioning structure, and the position adjustment structure is used to adjust the centers of multiple holes to be chamfered of the product to the same horizontal line; the product chamfering mechanism comprises a left chamfering device and a right chamfering device arranged on the workbench; the left chamfering device and the right chamfering device are respectively arranged on both sides of the chamfering positioning structure, and can reciprocate along the X-axis and the Y-axis; the left chamfering device, the right chamfering device and the chamfering positioning structure are adapted to simultaneously chamfer the two ends of the same hole to be chamfered of the product; the feeding structure comprises a feeding cylinder arranged on the frame, and the workbench is provided with a feeding guide structure between the feeding cylinder and the feeding end of the chamfering positioning structure, and the feeding The material guide structure includes a feed guide bottom plate and a feed guide side plate arranged on the workbench, and the feed guide side plate is arranged on the rear side of the feed guide bottom plate; the feed guide bottom plate and the feed guide side plate are integrally formed, and the whole is L-shaped; a detachable feed positioning structure is arranged on the feed positioning bottom plate, and the feed positioning structure includes a feed positioning bottom plate and a feed positioning side plate detachably mounted on the feed guide bottom plate; the feed positioning bottom plate and the feed positioning side plate are integrally formed, and the whole is L-shaped; the upper end surface of the feed guide bottom plate and the outer side of the feed positioning bottom plate A positioning groove adapted to the product to be chamfered is formed between the walls, and the positioning groove extends from the head end of the feed guide bottom plate to its end along the X-axis direction; the upper part of the feed positioning side plate is adapted to the bottom notch of the product to be chamfered, and the width of the feed positioning structure is adapted to the bottom notch of the product to be chamfered; one end of the bottom of the product to be chamfered is adapted to the positioning groove, and the other end can be mounted on the feed positioning side plate; a clearance groove is formed between the feed guide side plate and the feed positioning side plate, and the clearance groove is adapted to the end of the product to be chamfered mounted on the feed positioning side plate.

[0009] Furthermore, the chamfering positioning structure includes a chamfering positioning block arranged along the Y-axis direction, a material guide channel adapted to the product to be chamfered is formed in the chamfering positioning block along the Y-axis direction, and a feeding notch extending to the material guide channel is opened on the side of the chamfering positioning block facing the discharge end of the feeding structure; the material guide channel is arranged through both ends of the chamfering positioning block, and a push cylinder and a stop cylinder are respectively arranged at both ends of the chamfering positioning block, and the piston part of the push cylinder is provided with a push strip which can move in the Y-axis direction therewith, and the top end of the push strip is movably arranged in the material guide channel, and the top end of the push strip is adapted to the outer wall of the product to be chamfered;

[0010] The piston of the material blocking cylinder is provided with a material blocking plate which can move in the Y-axis direction with the material blocking cylinder, and the material blocking plate and the chamfered positioning block are adapted to the outer wall of the material discharging end of the material guiding channel;

[0011] The material guide channel includes a horizontal material guide section, an inclined chamfering section, and a lower bottom support section connected in sequence from the feed end to the discharge end of the chamfering positioning block; the position adjustment structure includes an inclined chamfering section and a lower bottom support section; the discharge end of the chamfering positioning block is provided with a chamfering processing notch running through the side walls on both sides thereof, and the chamfering processing notch is adapted to the left chamfering device and the right chamfering device; the length of the inclined chamfering section is adapted to the width of the bottom notch of the product to be chamfered, and when the product to be chamfered is located at the chamfering processing notch position, its two ends of the bottom are respectively arranged at the end of the horizontal material guide section and the lower bottom support section; the inclination of the inclined chamfering section is adapted to the hole position to be chamfered of the product to be chamfered, and when the bottom of the front end of the product to be chamfered is located on the horizontal material guide section and the bottom of the end is located on the lower bottom support section, there are more than one hole positions to be chamfered on the product to be chamfered, and the centers are located on the same horizontal line and are covered by the chamfering processing notch.

[0012] Furthermore, the frame is provided with an upper chamfering positioning device above the chamfering positioning block, and the upper end surface of the chamfering positioning block located above the chamfering processing notch is provided with an upper positioning hole connected to the material guide channel, and the upper positioning hole is provided with an upper compression spring, and a positioning pin is provided in the inner sleeve of the compression spring. The lower part of the positioning pin is telescopically arranged in the upper positioning hole, and the bottom of the positioning pin is adapted to the top end surface of the product to be chamfered; the top of the positioning pin is provided with a pin cap located above the top of the upper compression spring; the upper chamfering positioning device includes an upper positioning seat, an upper positioning cylinder arranged on the upper positioning seat, and the piston portion of the upper positioning cylinder is provided with an upper positioning pressure head which can be lifted and lowered along the Z-axis direction with it, and the bottom of the upper positioning pressure head is adapted to the top of the pin cap.

[0013] Furthermore, the chamfering positioning block is located above the chamfering processing notch and is provided with a waist-shaped through hole that penetrates the side walls on both sides thereof, and a movable limiting rod is provided in the waist-shaped through hole, and both ends of the limiting rod are provided through the waist-shaped through hole; the waist-shaped through hole is arranged in a square shape and inclined upward from top to bottom toward the discharge end of the chamfering positioning block, and the limiting rod can be lifted and lowered along the waist-shaped through hole; removable nuts are provided at both ends of the limiting rod, and the nuts are adapted to the outer wall of the chamfering positioning block.

[0014] Furthermore, a side positioning hole is provided on the upper left of the end of the chamfering notch of the chamfering positioning block, and the side positioning hole penetrates from the outer wall of one side of the chamfering positioning block toward the feeding structure to the connecting material guide channel;

[0015] The side positioning hole is provided with a side push column, a side compression spring and a side push bead in sequence from the outside to the inside, and the side positioning hole is provided with an outer hole section and an inner hole section in sequence from the outside to the inside, and the diameter of the outer hole section is smaller than that of the inner hole section; the side push column extends from the outer hole section to the inner hole section, and a pressure plate is provided at the end of the inner hole section, and a column cap adapted to the side wall of the chamfered positioning block is provided at the end away from the pressure plate, and the diameter of the main cap is larger than that of the outer hole section, and the diameter of the pressure plate is larger than that of the outer hole section; the pressure plate is connected to one end of the side compression spring, and the other end of the side compression spring is connected to the side push bead; in normal state, part of the side push bead is located in the material guide channel, and part of it is located in the inner hole section; the side push bead can be retracted into the inner hole section as a whole under force.

[0016] Furthermore, the chamfer positioning block is composed of a long chamfer plate and a short chamfer plate that can be detachably assembled; the long chamfer plate is in an overturned L-shape, and a guide groove is provided on the outer wall on the side facing the short chamfer plate, and the guide groove is set through both ends of the long chamfer plate; the short chamfer plate is attached to the right part of the long chamfer plate close to the direction of the material blocking cylinder, and the side wall of the short chamfer plate and the guide groove cooperate to form a guide channel; the left end of the short chamfer plate and the left end of the long chamfer plate constitute a feed notch; the chamfering processing notch is set through the long chamfer plate and the short chamfer plate; the upper positioning hole is formed on the long chamfer plate; the side positioning hole is formed on the short chamfer plate; the waist-shaped through hole is set through the long chamfer plate and the short chamfer plate.

[0017] The beneficial effects of the utility model are as follows: 1. Through the position adjustment structure, the position of the product to be chamfered on the chamfering positioning structure is adjusted so that the centers of the multiple holes to be chamfered are located on the same horizontal line, so that the chamfering of multiple holes can be achieved by moving the left chamfering device and the right chamfering device of a double-sided chamfering machine in the X-axis and Y-axis directions. This effectively solves the problem that when there are multiple holes in the existing centrifugal block that need to be double-sided chamfered, it needs to be achieved by multiple double-sided chamfering machines, which results in high equipment cost, low processing efficiency, complex operation, high labor intensity and high labor cost.

[0018] 2. The feed positioning bottom plate, feed positioning side plate, feed guide bottom plate and feed guide side plate cooperate to achieve stable and reliable feeding. At the same time, the detachable feed positioning structure (feed positioning bottom plate and feed positioning side plate) can realize the pre-installation of the product to be chamfered (centrifugal block), and then the feed positioning structure with the pre-installed centrifugal block is directly installed on the feed guide structure, which can be pre-installed in advance to achieve uninterrupted chamfering, without the need to wait for the installation of the centrifugal block to the feed structure after each chamfering, thereby improving processing efficiency.

[0019] 3. A positioning groove adapted to the product to be chamfered is formed between the upper end surface of the feed guide bottom plate and the outer side wall of the feed positioning bottom plate, and the width of the feed positioning structure is adapted to the bottom notch of the product to be chamfered; one end of the bottom of the product to be chamfered is adapted to the positioning groove, and the other end can be mounted on the feed positioning side plate; a clearance groove is formed between the feed guide side plate and the feed positioning side plate, and the clearance groove is adapted to the end of the product to be chamfered mounted on the feed positioning side plate; the placement of the product to be chamfered (centrifugal block) can be achieved stably and reliably, avoiding the product to be chamfered on the feed structure from falling, offsetting, getting stuck, etc. during the feeding process.

[0020] 4. The structure of the material guide channel, such as the horizontal material guide section, the inclined chamfer section, and the bottom support section, can simply and reliably realize the horizontal adjustment of the double hole positions and can meet the horizontal adjustment of the two hole positions. The structure is simple, reliable, and easy to realize.

[0021] 5. The chamfering upper positioning device can limit the position of the product to be chamfered during chamfering to prevent it from shaking, mainly the upper and lower square deviations.

[0022] 6. The limit rod can play a certain role in deceleration and limiting. When the chamfered product runs to the chamfering position (chamfering processing notch), it plays a deceleration role to prevent it from running directly to the discharge end of the chamfering positioning block.

[0023] 7. The setting of side ejector column, side compression spring and side ejector ball can play a lateral (X-axis) limiting role for the chamfered product at the chamfering position (chamfering processing notch) to prevent it from shifting during the chamfering process.

[0024] 8. The chamfer positioning block is composed of a long chamfer plate and a short chamfer plate, which can be disassembled and assembled to facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the utility model.

[0026] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0027] Figure 3 This is a schematic diagram of the test structure of the utility model.

[0028] Figure 4 It is a structural schematic diagram of the chamfer positioning mechanism.

[0029] Figure 5 This is a structural schematic diagram of the chamfer positioning block.

[0030] Figure 6 It is a structural schematic diagram of the feed guide structure and the feed positioning structure.

[0031] Figure 7It is a schematic diagram of the structure of the push bar.

[0032] Figure 8 Schematic diagram of the structure for determining the position of the bit hole.

[0033] Among them, 1. frame, 2. workbench, 3. feeding mechanism, 4. chamfering positioning mechanism, 5. left chamfering device, 6. right chamfering device, 7. feeding cylinder, 8. feeding guide bottom plate, 9. feeding guide side plate, 11. feeding positioning bottom plate, 12. feeding positioning side plate, 13. giving way, 14. chamfering positioning block, 15. material guide channel, 16. feeding notch, 17. pushing cylinder, 18. blocking cylinder, 19. pushing bar, 20. blocking plate, 21. Horizontal material guide section, 22. Inclined chamfering section, 23. Lower bottom support section, 24. Chamfering processing notch, 25. Upper positioning hole, 26. Upper compression spring, 27. Positioning pin, 28. Pin cap, 29. Upper positioning cylinder, 30. Upper positioning pressure head, 31. Waist-shaped through hole, 32. Limit rod, 33. Side positioning hole, 34. Side push column, 35. Side compression spring, 36. Side push bead, 37. Long chamfered plate, 38. Short chamfered plate, 39. Products to be chamfered, 40. Arc notch.

[0034] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0035] Embodiment 1, as Figures 1 to 8 The shown CNC double-hole chamfering machine for chamfering centrifugal blocks comprises a frame 1, a workbench 1 arranged on the frame 1, a feeding mechanism 3 is arranged on the workbench 1, a chamfering positioning structure 4 adapted to the discharge end of the feeding mechanism 3, a product gathering structure arranged behind the chamfering positioning structure 4, and a product chamfering mechanism adapted to the chamfering positioning structure 4, a position adjustment structure is arranged on the chamfering positioning structure 4, and the position adjustment structure is used to adjust the centers of multiple holes to be chamfered of the product to the same horizontal line; the product chamfering mechanism comprises a left chamfering device 5 and a right chamfering device 6 arranged on the workbench 1; the left chamfering device 5 and the right chamfering device 6 are respectively arranged on both sides of the chamfering positioning structure 4, and can reciprocate along the X-axis and the Y-axis; the left chamfering device 5, the right chamfering device 6 and the chamfering positioning structure 4 are adapted to simultaneously chamfer the two ends of the same hole to be chamfered of the product.

[0036] The product aggregate structure is arranged below the discharge end of the chamfer positioning structure 4, and is adapted to the discharge port of the chamfer positioning structure 4. The product aggregate structure can be in the form of a conveyor belt, a material collecting device, or the like. The specific arrangement is selected according to the needs. Because its structure does not belong to the innovative point of this application, it will not be further described here, and it can be arranged with reference to the prior art.

[0037] The feeding structure includes a feeding cylinder 7 arranged on the frame 1, and the workbench 1 is provided with a feeding guide structure between the feeding cylinder 7 and the feeding end of the chamfer positioning structure 4, and the feeding guide structure includes a feeding guide bottom plate 8 and a feeding guide side plate 9 arranged on the workbench 1, and the feeding guide side plate 9 is arranged on the rear side of the feeding guide bottom plate 8; the feeding guide bottom plate 8 and the feeding guide side plate 9 are integrally formed and are L-shaped as a whole; a detachable feeding positioning structure is provided on the feeding positioning bottom plate 11, and the feeding positioning structure includes a feeding positioning bottom plate 11 and a feeding positioning side plate 12 which are detachably installed on the feeding guide bottom plate 8; the feeding positioning bottom plate 11 and the feeding positioning side plate 12 are arranged on the feeding guide bottom plate 8. The body is formed and is L-shaped as a whole; a positioning groove adapted to the product to be chamfered is formed between the upper end surface of the feed guide bottom plate 8 and the outer side wall of the feed positioning bottom plate 11, and the positioning groove extends from the head end of the feed guide bottom plate 8 to its end along the X-axis direction; the upper part of the feed positioning side plate 12 is adapted to the bottom notch of the product to be chamfered, and the width of the feed positioning structure is adapted to the bottom notch of the product to be chamfered; one end of the bottom of the product to be chamfered is adapted to the positioning groove, and the other end can be mounted on the feed positioning side plate 12; a clearance groove 13 is formed between the feed guide side plate 9 and the feed positioning side plate 12, and the clearance groove 13 is adapted to the end of the product to be chamfered mounted on the feed positioning side plate 12.

[0038] The positioning groove and the clearance groove 13 are mainly used to fit the shape of the product to be chamfered, so as to realize the positioning and feeding of the product to be chamfered more stably and reliably. The clearance groove 13 refers to the gap between the feed guide side plate 9 and the feed positioning side plate 12.

[0039] The chamfering positioning structure 4 includes a chamfering positioning block 14 arranged along the Y-axis direction, and a material guide channel 15 adapted to the product to be chamfered is formed in the chamfering positioning block 14 along the Y-axis direction, and a feed notch 16 extending to the material guide channel 15 is opened on the side of the chamfering positioning block 14 facing the discharge end of the feed structure; the material guide channel 15 passes through both ends of the chamfering positioning block 14, and a pushing cylinder 17 and a blocking cylinder 18 are respectively provided at both ends of the chamfering positioning block 14 of the workbench 1, and the piston portion of the pushing cylinder 17 is provided with a pushing bar 19 which can move in the Y-axis direction therewith, and the top end of the pushing bar 19 is movably arranged in the material guide channel 15, and the top end of the pushing bar 19 is adapted to the outer wall of the product to be chamfered; the top of the pushing bar 19 is formed with an arc notch 40 adapted to the product to be chamfered.

[0040] The piston portion of the material blocking cylinder 18 is provided with a material blocking plate 20 which can move along the Y-axis direction, and the material blocking plate 20 is adapted to the outer side wall of the chamfered positioning block 14 at the discharge end of the material guiding channel 15 .

[0041] The material guide channel 15 includes a horizontal material guide section 21, an inclined chamfering section 22, and a lower bottom support section 23 connected in sequence from the feed end to the discharge end of the chamfering positioning block 14; the position adjustment structure includes the inclined chamfering section 22 and the lower bottom support section 23; the discharge end of the chamfering positioning block 14 is provided with a chamfering processing notch 24 running through the side walls on both sides thereof, and the chamfering processing notch 24 is adapted to the left chamfering device 5 and the right chamfering device 6; the length of the inclined chamfering section 22 is adapted to the width of the bottom notch of the product to be chamfered, and when the product to be chamfered is located at the position of the chamfering processing notch 24, its bottom ends are respectively arranged at the end of the horizontal material guide section 21 and the lower bottom support section 23; the inclination of the inclined chamfering section 22 is adapted to the hole position to be chamfered of the product to be chamfered, and when the bottom of the front end of the product to be chamfered is located on the horizontal material guide section 21 and the bottom of the end is located on the lower bottom support section 23, there are more than one hole positions to be chamfered on the product to be chamfered, and the centers are located on the same horizontal line and are covered by the chamfering processing notch 24.

[0042] The frame 1 is provided with an upper chamfering positioning device above the chamfering positioning block 14. The upper end surface of the chamfering positioning block 14 above the chamfering processing notch 24 is provided with an upper positioning hole 25 connected to the material guide channel 15. The upper positioning hole 25 is provided with an upper compression spring 26. A positioning pin 27 is sleeved in the compression spring. The lower part of the positioning pin 27 is telescopically arranged in the upper positioning hole 25, and the bottom of the positioning pin 27 is adapted to the top end surface of the product to be chamfered; the top of the positioning pin 27 is provided with a pin cap 28 located above the top of the upper compression spring 26; the chamfering upper positioning device includes an upper positioning seat, an upper positioning cylinder 29 arranged on the upper positioning seat, and the piston part of the upper positioning cylinder 29 is provided with an upper positioning pressure head 30 which can be lifted and lowered along the Z-axis direction with it, and the bottom of the upper positioning pressure head 30 is adapted to the top of the pin cap 28.

[0043] The chamfering positioning block 14 is provided with a waist-shaped through hole 31 penetrating through the side walls on both sides thereof, and a movable limiting rod 32 is provided in the waist-shaped through hole 31, and both ends of the limiting rod 32 are provided through the waist-shaped through hole 31; the waist-shaped through hole 31 is arranged upwardly and squarely from top to bottom toward the discharge end of the chamfering positioning block 14, and the limiting rod 32 can be lifted and lowered along the waist-shaped through hole 31; both ends of the limiting rod 32 are provided with detachable nuts, and the nuts are adapted to the outer wall of the chamfering positioning block 14. The inclined upward setting prevents the limiting rod 32 from getting stuck when it moves upward when receiving the force of the product to be processed, and it is also a gentle force.

[0044] The chamfering positioning block 14 is provided with a side positioning hole 33 at the upper left end of the chamfering processing notch 24. The side positioning hole 33 penetrates from the outer wall of the chamfering positioning block 14 on one side facing the feeding structure to the connecting material guide channel 15.

[0045] The side positioning hole 33 is provided with a side push column 34, a side compression spring 35, and a side push bead 36 in sequence from the outside to the inside. The side positioning hole 33 is provided with an outer hole section and an inner hole section in sequence from the outside to the inside. The diameter of the outer hole section is smaller than that of the inner hole section. The side push column 34 extends from the outer hole section to the inner hole section, and a pressure plate is provided at its end located at the inner hole section, and a column cap adapted to the side wall of the chamfered positioning block 14 is provided at its end away from the pressure plate, and the diameter of the main cap is larger than that of the outer hole section, and the diameter of the pressure plate is larger than that of the outer hole section. The pressure plate is connected to one end of the side compression spring 35, and the other end of the side compression spring 35 is connected to the side push bead 36. In normal state, part of the side push bead 36 is located in the material guide channel 15, and part of it is located in the inner hole section. The side push bead 36 can be retracted into the inner hole section as a whole under force.

[0046] One or more measuring position holes can be provided as required, and can be provided on any one of the two sides of the chamfer positioning block 14 as required. The specific situation can be selected as required.

[0047] A set of X-axis guide rails are arranged on the frame 1, and two Y-axis guide rails that can move along the X-axis guide rails are arranged on the X-axis guide rails; the left chamfering device 5 and the right chamfering device 6 are respectively arranged on the two Y-axis guide rails; the left chamfering device 5 and the right chamfering device 6 are respectively provided with chamfering drill bits; the two chamfering drill bits are both arranged in the direction of the chamfering positioning block 14 and are adapted to the chamfering processing notch 24.

[0048] The chamfer positioning block 14 is composed of a long chamfer plate 37 and a short chamfer plate 38 that can be detachably assembled; the long chamfer plate 37 is in an overturned L-shape, and a guide groove is provided on the outer side wall facing the short chamfer plate 38, and the guide groove is set through both ends of the long chamfer plate 37; the short chamfer plate 38 is attached to the right part of the long chamfer plate 37 close to the material blocking cylinder 18, and the side wall of the short chamfer plate 38 and the guide groove cooperate to form a guide channel; the left end of the short chamfer plate 38 and the left end of the long chamfer plate 37 constitute the feed notch 16; the chamfering processing notch 24 is set through the long chamfer plate 37 and the short chamfer plate 38; the upper positioning hole 25 is formed on the long chamfer plate 37; the side positioning hole 33 is formed on the short chamfer plate 38; the waist-shaped through hole 31 is set through the long chamfer plate 37 and the short chamfer plate 38.

[0049] Working principle: the piston of the feed cylinder pushes the product to be processed into the feed port (feed notch) of the chamfer positioning structure, so that it is located in the material guide channel, and then the push cylinder works to push the product to be chamfered; at the same time, the baffle cylinder drives the baffle plate to run to fit the outer wall of the discharge end of the material guide channel, sealing the front outer wall of the chamfer processing notch to prevent the product to be processed from being pushed out directly; when the product to be chamfered runs to the front of the material guide channel, the two ends of the bottom of the product to be processed are respectively located on the horizontal material guide section and the lower bottom support section. At this time, the centers of the double holes to be processed are just located in the same horizontal plane; at the same time, the upper positioning cylinder drives the positioning pin to press down and abut against the top end face of the product to be processed, thereby preventing it from moving;

[0050] At this time, the left chamfering device and the right chamfering device run to the two sides of the first hole to be chamfered of the product to be chamfered, and the chamfering drill bit is used to simultaneously chamfer both ends of the first hole; after the chamfering is completed, the left chamfering device and the right chamfering device are translated to the second hole adaptation position, and the chamfering drill bit can be used to simultaneously chamfer both ends of the second hole, and so on, to complete the chamfering of more than one hole.

[0051] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC double-hole chamfering machine for chamfering centrifugal blocks, comprising a frame, a workbench arranged on the frame, a feeding mechanism arranged on the workbench, a chamfering positioning structure adapted to the discharge end of the feeding mechanism, a product collecting structure arranged behind the chamfering positioning structure, and a product chamfering mechanism adapted to the chamfering positioning structure, characterized in that: A position adjustment structure is provided on the chamfering positioning structure, and the position adjustment structure is used to adjust the centers of the two holes to be chamfered of the product to the same horizontal line; the product chamfering mechanism comprises a left chamfering device and a right chamfering device arranged on the workbench; the left chamfering device and the right chamfering device are respectively arranged on both sides of the chamfering positioning structure, and both can reciprocate along the X-axis and the Y-axis; the left chamfering device, the right chamfering device and the chamfering positioning structure are adapted to simultaneously chamfer the two ends of the same hole to be chamfered of the product; the feeding structure comprises a feeding cylinder arranged on the frame, and the workbench is provided with a feeding guide structure between the feeding cylinder and the feeding end of the chamfering positioning structure, and the feeding guide structure comprises a feeding guide bottom plate and a feeding guide side plate arranged on the workbench, and the feeding guide side plate is arranged on the rear side of the feeding guide bottom plate; the feeding guide bottom plate, the feeding guide side plate and the feeding guide side plate are arranged on the rear side of the feeding guide bottom plate; the feeding guide bottom plate, the feeding guide side plate and the feeding guide side plate are arranged on the rear side of the feeding guide bottom plate; the feeding guide bottom plate, the feeding guide side plate and the feeding guide side plate are arranged on the rear side of the feeding guide bottom plate. The body is formed and is L-shaped as a whole; a detachable feed positioning structure is provided on the feed positioning bottom plate, and the feed positioning structure includes a feed positioning bottom plate and a feed positioning side plate that can be detachably installed on the feed guide bottom plate; the feed positioning bottom plate and the feed positioning side plate are formed as one piece; a positioning groove adapted to the product to be chamfered is formed between the upper end surface of the feed guide bottom plate and the outer side wall of the feed positioning bottom plate, and the positioning groove extends to the head end of the feed guide bottom plate along the X-axis direction to its end; the upper part of the feed positioning side plate is adapted to the bottom notch of the product to be chamfered, and the width of the feed positioning structure is adapted to the bottom notch of the product to be chamfered; one end of the bottom of the product to be chamfered is adapted to the positioning groove, and the other end can be mounted on the feed positioning side plate; a clearance groove is formed between the feed guide side plate and the feed positioning side plate, and the clearance groove is adapted to the end of the product to be chamfered mounted on the feed positioning side plate.

2. The CNC double-hole chamfering machine for centrifugal block chamfering according to claim 1, characterized in that: The chamfering positioning structure includes a chamfering positioning block arranged along the Y-axis direction, a material guide channel adapted to the product to be chamfered is formed in the chamfering positioning block along the Y-axis direction, and a feeding notch extending to the material guide channel is opened on the side of the chamfering positioning block facing the discharge end of the feeding structure; the material guide channel is arranged through both ends of the chamfering positioning block, and a push cylinder and a stop cylinder are respectively arranged at both ends of the chamfering positioning block, and the piston part of the push cylinder is provided with a push bar that can move in the Y-axis direction with it, and the top end of the push bar is movably arranged in the material guide channel, and the top end of the push bar is adapted to the outer wall of the product to be chamfered; The piston of the material blocking cylinder is provided with a material blocking plate which can move in the Y-axis direction with the material blocking cylinder, and the material blocking plate and the chamfered positioning block are adapted to the outer wall of the material discharging end of the material guiding channel; The material guide channel includes a horizontal material guide section, an inclined chamfering section, and a lower bottom support section connected in sequence from the feed end to the discharge end of the chamfering positioning block; the position adjustment structure includes an inclined chamfering section and a lower bottom support section; the discharge end of the chamfering positioning block is provided with a chamfering processing notch running through the side walls on both sides thereof, and the chamfering processing notch is adapted to the left chamfering device and the right chamfering device; the length of the inclined chamfering section is adapted to the width of the bottom notch of the product to be chamfered, and when the product to be chamfered is located at the chamfering processing notch position, its two ends of the bottom are respectively arranged at the end of the horizontal material guide section and the lower bottom support section; the inclination of the inclined chamfering section is adapted to the hole position to be chamfered of the product to be chamfered, and when the bottom of the front end of the product to be chamfered is located on the horizontal material guide section and the bottom of the end is located on the lower bottom support section, there are more than one hole positions to be chamfered on the product to be chamfered, and the centers are located on the same horizontal line and are covered by the chamfering processing notch.

3. The CNC double-hole chamfering machine for centrifugal block chamfering according to claim 2, characterized in that: The frame is provided with an upper chamfering positioning device above the chamfering positioning block, and the upper end surface of the chamfering positioning block located above the chamfering processing notch is provided with an upper positioning hole connected to the material guide channel, and the upper positioning hole is provided with an upper compression spring, and a positioning pin is provided in the inner sleeve of the compression spring. The lower part of the positioning pin is telescopically arranged in the upper positioning hole, and the bottom of the positioning pin is adapted to the top end surface of the product to be chamfered; the top of the positioning pin is provided with a pin cap located above the top of the upper compression spring; the upper chamfering positioning device includes an upper positioning seat, an upper positioning cylinder arranged on the upper positioning seat, and the piston part of the upper positioning cylinder is provided with an upper positioning pressure head which can be lifted and lowered along the Z-axis direction with it, and the bottom of the upper positioning pressure head is adapted to the top of the pin cap.

4. The CNC double-hole chamfering machine for chamfering centrifugal blocks according to claim 3, characterized in that: The chamfering positioning block is located above the chamfering processing notch and is provided with a waist-shaped through hole that penetrates the side walls on both sides thereof, and a movable limiting rod is provided in the waist-shaped through hole, and both ends of the limiting rod are provided through the waist-shaped through hole; the waist-shaped through hole is arranged in a square and inclined upward from top to bottom toward the discharge end of the chamfering positioning block, and the limiting rod can be lifted and lowered along the waist-shaped through hole; removable nuts are provided at both ends of the limiting rod, and the nuts are adapted to the outer wall of the chamfering positioning block.

5. The CNC double-hole chamfering machine for chamfering centrifugal blocks according to claim 4, characterized in that: The chamfering positioning block is provided with a side positioning hole at the upper left end of the chamfering processing notch, and the side positioning hole penetrates from the outer wall of one side of the chamfering positioning block toward the feeding structure to the connecting material guide channel; The side positioning hole is provided with a side push column, a side compression spring and a side push bead in sequence from the outside to the inside, and the side positioning hole is provided with an outer hole section and an inner hole section in sequence from the outside to the inside, and the diameter of the outer hole section is smaller than that of the inner hole section; the side push column extends from the outer hole section to the inner hole section, and a pressure plate is provided at the end of the inner hole section, and a column cap adapted to the side wall of the chamfered positioning block is provided at the end away from the pressure plate, and the diameter of the main cap is larger than that of the outer hole section, and the diameter of the pressure plate is larger than that of the outer hole section; the pressure plate is connected to one end of the side compression spring, and the other end of the side compression spring is connected to the side push bead; in normal state, part of the side push bead is located in the material guide channel, and part of it is located in the inner hole section; the side push bead can be retracted into the inner hole section as a whole under force.

6. The CNC double-hole chamfering machine for centrifugal block chamfering according to claim 5, characterized in that: The chamfer positioning block is composed of a long chamfer plate and a short chamfer plate that can be detachably assembled; the long chamfer plate is in an overturned L-shape, and a guide groove is provided on the outer wall on the side facing the short chamfer plate, and the guide groove is set through both ends of the long chamfer plate; the short chamfer plate is attached to the right part of the long chamfer plate close to the direction of the material blocking cylinder, and the side wall of the short chamfer plate and the guide groove cooperate to form a guide channel; the left end of the short chamfer plate and the left end of the long chamfer plate constitute a feed notch; the chamfering processing notch is set through the long chamfer plate and the short chamfer plate; the upper positioning hole is formed on the long chamfer plate; the side positioning hole is formed on the short chamfer plate; the waist-shaped through hole is set through the long chamfer plate and the short chamfer plate.

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