Casting burr grinding equipment

Abstract

The casting burr grinding equipment comprises a rack, a containing frame, an opening and closing plate, an opening and closing driving device, an inner cavity grinding assembly, a telescopic assembly and a rotation control assembly, the containing frame and the telescopic assembly are fixedly arranged on the rack, and the opening and closing plate is installed on the containing frame in an overturning mode through the opening and closing driving device; the telescopic assembly controls the inner cavity grinding assembly to enter and exit from the containing frame, the rotation control assembly controls the inner cavity grinding assembly to rotate, a grinding plate is installed on the bottom face of the opening and closing plate in a floating mode, and the inner cavity grinding assembly comprises a telescopic grinding head and a telescopic control unit. The opening and closing driving device controls the opening and closing plate to press down and fix the casting, the rotating control assembly and the telescopic assembly enable the grinding head to rotationally stretch into an inner cavity of the casting for grinding, after the grinding head abuts against the inner cavity, the casting rotates, the outer wall is ground by the grinding plate, after completion, all the assemblies reset, and the casting is taken out. The equipment can grind the inner wall and the outer wall of the casting at the same time, efficiency is improved, and grinding quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of casting processing equipment, and in particular to a casting burr grinding device. Background Art

[0002] During the production of castings, burrs often form on the surface of the castings, especially on the inner and outer walls of tubular castings, due to the characteristics of the casting process. These burrs not only affect the appearance quality of the castings, but may also cause problems during subsequent assembly or use, so they must be polished. Currently, there are a variety of casting grinding technologies and equipment on the market.

[0003] For example, the "Device for Deburring Casting Surfaces," with authorization announcement number CN222857535U, uses a sliding plate to drive a rotating motor and a grinding brush downward into the interior of a tubular casting. The motor then activates to rotate the grinding brush, polishing the interior of the casting. This improves polishing efficiency and reduces manual labor. However, this device only polishes the inner cavity of the casting and lacks a corresponding design for polishing the outer wall. This makes it impossible to polish both the inner and outer walls simultaneously, and overall polishing efficiency still needs to be improved.

[0004] Another example is the "A grinding device for removing burrs on the surface of castings" with publication number CN116967875A, which can simultaneously grind burrs on the inner wall surface, outer wall surface and side wall surface of the casting port, thereby improving the grinding efficiency. However, its structure is complex, and its adaptability to castings of different sizes is not flexible enough. In addition, there are deficiencies in the fixing stability of the castings and the adjustment of the grinding pressure during the grinding process. In the existing technology, some equipment finds it difficult to simultaneously and efficiently grind the inner cavity and outer wall of the casting. During the grinding process, there are also problems such as the casting being not firmly fixed and the grinding pressure being unable to be accurately adjusted, resulting in uneven grinding quality and making it difficult to meet the increasing production needs.

[0005] Therefore, it is of great practical significance to develop a burr grinding device that can overcome the above problems and achieve high efficiency, precision and applicability to a variety of castings. Summary of the Invention

[0006] The present invention aims to solve one of the technical problems existing in the prior art.

[0007] The present application provides a casting burr grinding device, including a frame, a placement rack, an opening and closing plate, an opening and closing drive device, an inner cavity grinding assembly, a telescopic assembly and a rotation control assembly. The placement rack and the telescopic assembly are fixed on the frame, and the opening and closing plate is flipped and installed on the placement rack by the opening and closing drive device. The telescopic assembly is used to control the inner cavity grinding assembly to enter and exit the placement rack, and the rotation control assembly is used to control the rotation of the inner cavity grinding assembly. A grinding plate is floatingly installed on the bottom surface of the opening and closing plate, and the inner cavity grinding assembly includes a telescopic grinding head and a telescopic control unit for controlling the extension and retraction of the grinding head.

[0008] The opening and closing drive device includes a semicircular cavity, a semicircular slide, a cylinder 1, a guide groove and a guide slider. The semicircular cavity is arranged in the placement frame and the top end is open. The semicircular slide is slidably installed in the semicircular cavity, the top end is hinged to the middle part of the opening and closing plate, and the bottom end is hinged to the outer end of the piston rod of the cylinder 1. The guide groove is horizontally arranged at the top of the placement frame, and the guide slider is fixed at the end of the side wall of the opening and closing plate and slides with the guide groove.

[0009] A notch is provided on the side of the placement rack facing the cylinder one, the outer end of the piston rod of the cylinder one and the lower end of the semicircular slide are connected to each other through a connecting rod, and the connecting rod is slidably installed in the notch.

[0010] The telescopic control unit includes a tube sleeve, a sliding rod, a spring 1 and a mounting groove. The sliding rod is provided with a mounting groove and is slidably inserted in the tube sleeve. The outer end is rotatably connected to the telescopic assembly and a spring 1 is arranged between the outer end of the tube sleeve. The mounting groove is provided with an outward-pushing conical block at one end close to the spring 1 and an inward-pull triangular block at the other end. The grinding head is slidably passed through the tube sleeve and the mounting groove, and the side away from the spring 1 is provided with an inward-pull triangular groove for cooperating with the inward-pull triangular block to move the grinding head into the mounting groove.

[0011] The telescopic assembly includes a second cylinder, a connecting hole and a connecting ring groove. The connecting hole is arranged at the end of the telescopic control unit, and a connecting ring groove is provided on the inner peripheral wall. The second cylinder is fixed on the frame, and the outer end of its piston rod is rotatably connected to the connecting ring groove through a connecting ring.

[0012] The rotation control assembly includes a floating plate, several floating parts, a motor and a gear. The floating plate is floatingly mounted on a placement frame through several floating parts and is suspended above the telescopic assembly. The motor is fixed on the top of the floating plate and a gear is installed on the output shaft. Guide slopes are symmetrically provided on the peripheral wall of the gear. The gear is transmission-connected to the inner cavity grinding assembly through several tooth grooves.

[0013] A second floating member is installed on the opening and closing plate, and the polishing plate can be floated and installed on the bottom surface of the opening and closing plate through the second floating member.

[0014] The second floating member comprises a pair, which are respectively arranged at two ends of the polishing plate.

[0015] The first and second floating parts both include a fixed tube, an insertion rod, a fixed stopper, a vertical slot, a sliding stopper and a second spring. The fixed tube is fixed on a frame or an opening and closing plate, and a plurality of vertical slots are provided at intervals on the circumference. The fixed stopper is fixed on the circumferential wall of the fixed tube. The insertion rod is slidably inserted in the fixed tube, and a sliding stopper that slides with the vertical slot is fixed on the circumference. The second spring is sleeved on the outside of the fixed tube, and its two ends are respectively in contact with the fixed stopper and the movable stopper.

[0016] The placing rack comprises two semicircular blocks, and the tops are provided with placing grooves adapted to the shape of the casting.

[0017] The beneficial effects of the present invention are as follows: 1. Efficient grinding: Through the synergistic effect of the rotary control component and the telescopic component, the inner cavity and outer wall of the casting can be polished at the same time, which greatly improves the grinding efficiency and saves a lot of processing time compared with traditional equipment. 2. Strong versatility: The placement rack adopts two semicircular blocks and is provided with a placement groove adapted to the shape of the casting, which can adapt to tubular castings of different specifications. In addition, the structural design in each embodiment, such as the telescopic control unit, the opening and closing drive device, etc., can adapt to the grinding requirements of castings of different sizes within a certain range by adjusting the position or parameters of the components, thereby improving the versatility of the equipment. 3. Stable grinding quality: The grinding plate on the bottom of the opening and closing plate is installed in a floating manner through floating part 2, which can automatically adjust the contact pressure according to the shape of the outer wall of the casting to ensure uniform grinding of the outer wall; the grinding head in the inner cavity grinding assembly can be precisely controlled to extend and retract through the telescopic control unit, stably pressing against the inner cavity of the casting for grinding or rotating the casting for grinding the outer wall, ensuring the grinding quality of the inner cavity and outer wall, making the grinding quality of the entire casting more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a casting burr grinding device in an embodiment of the present application; Figure 2 A three-dimensional diagram of the casting burr grinding device in an embodiment of the present application (without the rotation control component); Figure 3 This is a three-dimensional diagram of the rotation control component in the embodiment of the present application; Figure 4 This is a three-dimensional diagram of the opening and closing drive device in the embodiment of the present application; Figure 5 This is a three-dimensional diagram of the inner cavity grinding assembly in the embodiment of the present application (the pipe sleeve is cut horizontally); Figure 6 This is a three-dimensional diagram of the telescopic assembly and the sliding rod in the embodiment of the present application.

[0019] Reference numerals 1-frame, 2-placement rack, 3-opening and closing plate, 4-opening and closing drive device, 41-semicircular cavity, 42-semicircular slide, 43-cylinder 1, 44-guide groove, 45-guide slide, 46-connecting rod, 5-inner cavity grinding assembly, 51-grinding head, 52-telescopic control unit, 521-pipe sleeve, 522-slide rod, 523-mounting slot, 524-spring 1, 525-outward push cone block, 526-inward pull triangle block, 527-inner pull-in triangular groove, 6-telescopic assembly, 61-cylinder 2, 62-connecting hole, 63-connecting ring groove, 64-connecting ring, 7-rotation control assembly, 71-floating plate, 72-floating part 1, 73-motor, 74-gear, 75-floating part 2, 701-fixed cylinder, 702-insertion rod, 703-fixed stopper, 704-vertical groove, 705-sliding stopper, 706-spring 2, 8-polishing plate. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0021] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0022] The following is a detailed description of the casting burr grinding equipment provided in the embodiment of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0023] Example 1: An embodiment of the present application provides a casting burr grinding device, including a frame 1, a placement rack 2, an opening and closing plate 3, an opening and closing drive device 4, an inner cavity grinding component 5, a telescopic component 6 and a rotation control component 7. The placement rack 2 and the telescopic component 6 are fixed on the frame 1, and the opening and closing plate 3 is flipped and installed on the placement rack 2 through the opening and closing drive device 4. The telescopic component 6 is used to control the inner cavity grinding component 5 to enter and exit the placement rack 2. The rotation control component 7 is used to control the rotation of the inner cavity grinding component 5. A grinding plate 8 is floatingly installed on the bottom surface of the opening and closing plate 3. The inner cavity grinding component 5 includes a telescopic grinding head 51 and a telescopic control unit 52 for controlling the extension and retraction of the grinding head 51.

[0024] In this embodiment of the present application, the placement rack 2 includes two semicircular blocks, and a placement groove adapted to the shape of the casting is provided on the top.

[0025] like Figures 1 to 6 As shown, due to the adoption of the above structure, the tubular casting to be polished is placed in the placement slot of the placement rack 2, the opening and closing drive device 4 is operated to control the opening and closing plate 3 to press down, and the tubular casting to be polished is pressed and fixed between the polishing plate 8 and the placement slot, and the rotation control component 7 and the telescopic component 6 are also operated at the same time, so that the telescopic control unit 52 and the polishing head 51 rotate and extend into the inner cavity of the casting, and the polishing head 51 polishes the inner cavity of the casting until the telescopic control unit 52 contacts the frame 1, and the telescopic control unit 52 continues to operate until each polishing head 51 extends. The opening and closing drive device 4 releases the pressure on the opening and closing plate 3, and the rotation control component 7 continues to operate, driving the casting to rotate. The outer wall of the casting is polished by the polishing plate 8. After the polishing of the inner cavity and outer wall of the casting is completed, the telescopic component 6 controls the telescopic control unit 52 to retreat, and each polishing head 51 retreats to release the fixation on the inner cavity of the casting. The rotation control component 7 stops running, and the opening and closing drive device 4 drives the opening and closing plate 3 to open until the telescopic control unit 52 completely exits the casting. The worker can then take the polished casting out of the placement slot.

[0026] Example 2: The difference from Example 1 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the opening and closing drive device 4 includes a semicircular cavity 41, a semicircular slide 42, a cylinder 1 43, a guide groove 44 and a guide slider 45. The semicircular cavity 41 is arranged in the placement rack 2 and the top end is open. The semicircular slide 42 is slidably installed in the semicircular cavity 41, the top end is hinged to the middle part of the opening and closing plate 3, and the bottom end is hinged to the outer end of the piston rod of the cylinder 1 43. The guide groove 44 is horizontally arranged at the top of the placement rack 2, and the guide slider 45 is fixed at the end of the side wall of the opening and closing plate 3 and slides with the guide groove 44.

[0027] In this embodiment of the present application, a notch is provided on the side of the placement rack 2 facing the cylinder 1 43, and the outer end of the piston rod of the cylinder 1 43 and the lower end of the semicircular slide 42 are connected to each other through a connecting rod 46, and the connecting rod 46 is slidably installed in the notch.

[0028] like Figures 2 to 3 As shown, due to the adoption of the above-mentioned structure, after the tubular casting to be polished is placed in the placement groove of the placement rack 2, the piston rod of the cylinder 1 43 is extended, and the semicircular slide 42 is pushed downward in the semicircular cavity 41 through the connecting rod 46. Since the top of the semicircular slide 42 is hinged to the middle of the opening and closing plate 3, and the guide slider 45 at the end of the side wall of the opening and closing plate 3 slides with the guide groove 44 at the top of the placement rack 2, in the process of the semicircular slide 42 sliding down, the guide slider 45 slides horizontally outward along the guide groove 44, driving the side of the opening and closing plate 3 with the polishing plate 8 to smoothly flip and press down with the hinge point as the center, until the polishing plate 8 contacts the outer wall of the casting and presses it tightly in the placement groove, thereby completing the fixation of the casting. During the grinding process, if the pressure needs to be adjusted or after the grinding is completed, the piston rod of the cylinder 43 retracts, pulling the semicircular slide 42 to slide upward in the semicircular cavity 41, and the guide slider 45 slides in the opposite direction along the guide groove 44, and the opening and closing plate 3 flips upward. During this process, the connecting rod 46 slides synchronously in the notch of the placement rack 2 to ensure that the semicircular slide 42 moves smoothly, avoids interference with the flipping action of the opening and closing plate 3, and ensures that the casting fixation and release process is stable and reliable.

[0029] Example 3: The difference from Example 2 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the telescopic control unit 52 includes a sleeve 521, a slide rod 522, a spring 1 524 and a mounting groove 523. The slide rod 522 is provided with a mounting groove 523 and is slidably inserted in the sleeve 521. The outer end is rotatably connected to the telescopic component 6 and a spring 1 524 is provided between the outer end of the sleeve 521 and the outer end. The mounting groove 523 is provided with an outward push cone block 525 at one end close to the spring 1 524 and an inward pull triangle block 526 at the other end. The grinding head 51 is slidably passed through the sleeve 521 and the mounting groove 523. The side away from the spring 1 524 is provided with an inward pull triangle groove 527 for cooperating with the inward pull triangle block 526 to move the grinding head 51 into the mounting groove 523.

[0030] like Figures 5 and 6 As shown, due to the adoption of the above-mentioned structure, when the telescopic assembly 6 pushes the telescopic control unit 52 to rotate with the grinding head 51 and extend into the inner cavity of the casting, the slide rod 522 moves synchronously with the telescopic control unit 52. As the telescopic control unit 52 continues to go deeper, the outer end of the slide rod 522 gradually approaches the frame 1. When the slide rod 522 contacts the frame 1, the slide rod 522 stops moving relative to the sleeve 521, and the sleeve 521 continues to move toward the inner cavity of the casting under the push of the telescopic assembly 6. At this time, the slide rod 522 and the sleeve 521 slide relative to each other, and the spring 1 524 is compressed. The sleeve 521 and the grinding head 51 are stationary, and the outward pushing cone block 525 on the slide bar 522 moves with the slide bar 522, and the outward pushing cone block 525 gradually embeds into the inner side of the grinding head 51, pushing each grinding head 51 to slide outward along the sleeve 521 and the mounting groove 523 until the grinding head 51 is pressed against the inner cavity of the casting and fixed, and then the rotation control component 7 is operated to make the grinding plate 8 grind the outer wall of the casting. After the grinding is completed, the telescopic component 6 pulls the sleeve 521 back, and the spring 1 524 resets and pushes the slide bar 522 to move in the opposite direction relative to the sleeve 521, and the inward and outward pushing cone block 525 breaks away from contact with the inner side of the grinding head 51, and the pulling triangle block gradually embeds into the inner pulling triangle groove 527 of the grinding head 51, pulling each grinding head 51 to slide inward along the mounting groove 523, releasing the tightness against the inner cavity of the casting, and realizing the contraction and reset of the grinding head 51.

[0031] Example 4: The difference from Example 3 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the telescopic assembly 6 includes a second cylinder 61, a connecting hole 62 and a connecting ring groove 63. The connecting hole 62 is provided at the end of the telescopic control unit 52, and a connecting ring groove 63 is provided on the inner peripheral wall. The second cylinder 61 is fixed on the frame 1, and the outer end of its piston rod is rotatably connected to the connecting ring groove 63 through a connecting ring 64.

[0032] like Figure 6 As shown, due to the adoption of the above-mentioned structure, after the casting is placed and fixed, the piston rod of the second cylinder 61 is extended, and the connecting ring 64 at the outer end of the piston rod rotates with the connecting ring groove 63 in the connecting hole 62 at the end of the telescopic control unit 52, pushing the telescopic control unit 52 to move with the grinding head 51 toward the inner cavity of the casting. Since the connecting ring 64 can rotate freely in the connecting ring groove 63, when the rotation control component 7 drives the telescopic control unit 52 to rotate, the piston rod of the second cylinder 61 will not rotate synchronously with it, ensuring that the telescopic action and the rotation action do not interfere with each other. When the grinding is completed, the piston rod of cylinder 2 61 retracts, and through the cooperation of the connecting ring 64 and the connecting ring groove 63, the telescopic control unit 52 is pulled out of the inner cavity of the casting until it is completely separated from the casting. During the whole process, the rotation cooperation of the connecting ring 64 and the connecting ring groove 63 always ensures the coordination of the telescopic and rotational actions to avoid motion interference.

[0033] Example 5: The difference from Example 4 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the rotation control assembly 7 includes a floating plate 71, a plurality of floating parts 72, a motor 73 and a gear 74. The floating plate 71 is floatingly mounted on the placement rack 2 through a plurality of floating parts and is suspended above the telescopic assembly 6. The motor 73 is fixed on the top of the floating plate 71 and the gear 74 is installed on the output shaft. The peripheral wall of the gear 74 is symmetrically provided with guide bevels, and the gear 74 is transmission-connected to the inner cavity grinding assembly 5 through a plurality of tooth grooves.

[0034] In this embodiment of the present application, a second floating member 75 is installed on the opening and closing plate 3 , and the grinding plate 8 can be floatingly installed on the bottom surface of the opening and closing plate 3 through the second floating member 75 .

[0035] In this embodiment of the present application, there is a pair of floating members 75 , which are respectively arranged at both ends of the grinding plate 8 .

[0036] In this embodiment of the present application, floating member 1 72 and floating member 2 75 both include a fixed cylinder 701, an insertion rod 702, a fixed stop block 703, a vertical slot 704, a sliding stop block 705 and a spring 2 706. The fixed cylinder 701 is fixed on the frame 1 or the opening and closing plate 3, and a number of vertical slots 704 are arranged at intervals on the circumferential side. The fixed stop block 703 is fixed on the circumferential wall of the fixed cylinder 701. The insertion rod 702 is slidably inserted in the fixed cylinder 701, and a sliding stop block 705 that slides with the vertical slot 704 is fixed on the circumferential side. The spring 2 706 is sleeved on the outside of the fixed cylinder 701, and its two ends are respectively in contact with the fixed stop block 703 and the movable stop block.

[0037] like Figure 4 As shown, due to the adoption of the above-mentioned structure, after the casting is fixed, the motor 73 starts to drive the gear 74 to rotate. The gear 74 is connected to the telescopic control unit 52 through the tooth groove, driving the grinding head 51 to rotate and grind the inner cavity of the casting. The guiding slope of the peripheral wall of the gear 74 can adapt to the axial movement of the telescopic control unit 52 during the rotation process, ensuring that the transmission connection is always stable. At the same time, the floating plate 71 is suspended by the floating member 1 72. When the telescopic control unit 52 is extended and retracted, and the grinding head 51 passes the gear 74, the insertion rod 702 of the floating member 1 72 slides in the fixed cylinder 701, and the sliding block 705 moves along the vertical groove 704. The spring 2 706 is compressed and reset, driving the floating plate 71 to float axially synchronously with the telescopic control unit 52, ensuring the continuous engagement of the gear 74 and the telescopic control unit 52. When polishing the outer wall, the floating part 2 75 on the opening and closing plate 3 plays a role: the polishing plate 8 slides in the fixed cylinder 701 through the insertion rod 702, and the spring 2 706 buffers the polishing pressure so that the polishing plate 8 always fits the outer wall of the casting. When the casting rotates, the elastic expansion and contraction of the floating part 2 75 can compensate for the shape error of the casting and ensure that the outer wall is polished evenly. After the polishing is completed, the spring 2 706 of each floating part is reset, driving the relevant components back to the initial position.

[0038] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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 statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0039] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A casting burr grinding device, characterized in that: It includes a frame, a placement rack, an opening and closing plate, an opening and closing drive device, an inner cavity grinding assembly, a telescopic assembly and a rotation control assembly. The placement rack and the telescopic assembly are fixed on the frame. The opening and closing plate is flipped and installed on the placement rack through the opening and closing drive device. The telescopic assembly is used to control the inner cavity grinding assembly to enter and exit the placement rack. The rotation control assembly is used to control the rotation of the inner cavity grinding assembly. A grinding plate is floatingly installed on the bottom surface of the opening and closing plate. The inner cavity grinding assembly includes a telescopic grinding head and a telescopic control unit for controlling the extension and retraction of the grinding head.

2. A casting burr grinding device according to claim 1, characterized in that: The opening and closing drive device includes a semicircular cavity, a semicircular slide, a cylinder 1, a guide groove and a guide slider. The semicircular cavity is arranged in the placement frame and the top end is open. The semicircular slide is slidably installed in the semicircular cavity, the top end is hinged to the middle part of the opening and closing plate, and the bottom end is hinged to the outer end of the piston rod of the cylinder 1. The guide groove is horizontally arranged at the top of the placement frame, and the guide slider is fixed at the end of the side wall of the opening and closing plate and slides with the guide groove.

3. The casting burr grinding equipment according to claim 2, characterized in that: A notch is provided on the side of the placement rack facing the cylinder one, the outer end of the piston rod of the cylinder one and the lower end of the semicircular slide are connected to each other through a connecting rod, and the connecting rod is slidably installed in the notch.

4. The casting burr grinding equipment according to claim 1, characterized in that: The telescopic control unit includes a tube sleeve, a sliding rod, a spring 1 and a mounting groove. The sliding rod is provided with a mounting groove and is slidably inserted in the tube sleeve. The outer end is rotatably connected to the telescopic assembly and a spring 1 is arranged between the outer end of the tube sleeve. The mounting groove is provided with an outward-pushing conical block at one end close to the spring 1 and an inward-pull triangular block at the other end. The grinding head is slidably passed through the tube sleeve and the mounting groove, and the side away from the spring 1 is provided with an inward-pull triangular groove for cooperating with the inward-pull triangular block to move the grinding head into the mounting groove.

5. The casting burr grinding equipment according to claim 1, characterized in that: The telescopic assembly includes a second cylinder, a connecting hole and a connecting ring groove. The connecting hole is arranged at the end of the telescopic control unit, and a connecting ring groove is provided on the inner peripheral wall. The second cylinder is fixed on the frame, and the outer end of its piston rod is rotatably connected to the connecting ring groove through a connecting ring.

6. The casting burr grinding equipment according to claim 1, characterized in that: The rotation control assembly includes a floating plate, several floating parts, a motor and a gear. The floating plate is floatingly mounted on a placement frame through several floating parts and is suspended above the telescopic assembly. The motor is fixed on the top of the floating plate and a gear is installed on the output shaft. Guide slopes are symmetrically provided on the peripheral wall of the gear. The gear is transmission-connected to the inner cavity grinding assembly through several tooth grooves.

7. The casting burr grinding equipment according to claim 6, characterized in that: A second floating member is installed on the opening and closing plate, and the polishing plate can be floated and installed on the bottom surface of the opening and closing plate through the second floating member.

8. The casting burr grinding device according to claim 7, wherein the second floating member comprises a pair, which are respectively arranged at both ends of the grinding plate.

9. A casting burr grinding device according to claim 7, wherein the floating part one and the floating part two both include a fixed cylinder, an insertion rod, a fixed stopper, a vertical slot, a sliding stopper and a spring two, the fixed cylinder is fixed on the frame or the opening and closing plate, and a plurality of vertical slots are provided at intervals on the circumference, the fixed stopper is fixed on the circumferential wall of the fixed cylinder, the insertion rod is slidably inserted in the fixed cylinder, and a sliding stopper that slides with the vertical slot is fixed on the circumference, the spring two is sleeved on the outside of the fixed cylinder, and the two ends are respectively in contact with the fixed stopper and the movable stopper.

10. The casting burr grinding equipment according to claim 1, wherein the placement rack comprises two semicircular blocks, and a placement groove adapted to the shape of the casting is provided on the top.

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