Fixing clamp for casting finish machining

Abstract

The invention discloses a fixing clamp for casting finish machining, relates to the technical field of clamps, and solves the problems that multiple sets of clamps are needed for clamping and fixing the outer surface of the fixing clamp, operation is complicated, the machining efficiency of a special-shaped pipe metal casting is low, and the fixing effect of a special-shaped pipe is possibly poor due to the irregular shape of the special-shaped pipe. Comprising a clamping platform, a forward and reverse rotation motor is fixedly installed on the outer side of the clamping platform, the driving end of the forward and reverse rotation motor is fixedly connected with a threaded rod through a coupler, and a clamping structure used for clamping the two ends of the special-shaped pipe is installed at the upper end of the clamping platform; through the arrangement of the clamping structure and the expansion supporting structure, operation is easy and convenient, and the clamping effect on the special-shaped pipe is good; by installing the adjusting assembly, the embedded rod is in a contracted state by rotating an adjusting ring in the adjusting assembly, and therefore the multiple sets of expansion supporting structures can conveniently and rapidly enter the special-shaped pipe.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, in particular to a fixing clamp for finishing of castings. Background Art

[0002] A casting is a metal object obtained by various casting methods, that is, the smelted liquid metal is poured into a pre-prepared mold by pouring, injection, suction or other casting methods, and then cooled and polished to obtain an object with a certain shape, size and performance. Special-shaped pipes are a kind of metal castings. After casting, special-shaped pipes need to be polished and polished. In the process of polishing and polishing the special-shaped pipes, they need to be fixed with a clamp.

[0003] During use of existing special-shaped pipe clamps, due to the irregular shape of the cross-section of the special-shaped pipe, multiple sets of clamps may be required to clamp and fix the surface of the special-shaped pipe. This not only makes the operation complicated, resulting in low processing efficiency of the special-shaped pipe metal casting, but also may cause poor fixing effect of the special-shaped pipe due to the irregular shape of the special-shaped pipe. Summary of the invention

[0004] The object of the present invention is to provide a fixing fixture for finishing castings which is convenient for clamping special-shaped pipes, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A fixing fixture for finishing castings, comprising a clamping platform, a forward and reverse motor is fixedly installed on the outer side of the clamping platform, the driving end of the forward and reverse motor is fixedly connected to a threaded rod through a coupling, a clamping structure for clamping the two ends of a special-shaped tube is installed on the upper end of the clamping platform, the clamping structure comprises a fixed seat fixedly installed on the upper end surface of the clamping platform and a movable seat movably installed on the upper end surface of the clamping platform, and support rods are installed on both the fixed seat and the movable seat; an expansion support structure, the expansion support structure for supporting the inner wall of the special-shaped tube is fixedly installed on the outer side of the support rod.

[0006] Preferably, the two support rods are rotatably connected to the fixed seat and the movable seat through ball bearings respectively, a bottom support plate is fixedly installed on the lower end of the movable seat, and the lower end of the movable seat is fixedly embedded in the upper end surface of the bottom support plate, the lower end surface of the bottom support plate is movably abutted against the upper end surface of the clamping platform, a slider is fixedly installed at the center of the lower end of the bottom support plate, and the connection between the slider and the threaded rod is a threaded connection, and the rotation of the threaded rod can drive the movable seat to move through the slider.

[0007] Preferably, the slider is slidably connected to the clamping platform via a limiting straight groove, and the outer sides of the two support rods are fixedly sleeved with clamping disks, and the end faces of the two clamping disks on the opposite sides are fixedly adhered with rubber pads, and the rubber pads can increase the friction between the two ends of the special-shaped tube and the clamping disks, and a reduction motor is fixedly installed on the side of the fixed seat away from the movable seat. Due to the performance of the reduction motor itself, the special-shaped tube can be effectively prevented from rotating due to force during the processing of the special-shaped tube, and the driving shaft of the reduction motor is fixedly connected to the support rod installed on the fixed seat through a coupling.

[0008] Preferably, the expansion support structure includes a plurality of groups of outer sleeves which are circumferentially equidistantly distributed and fixedly mounted on the outside of the support rods, and the outer sleeves are close to the opposite ends of the two support rods, and an inner rod which can be moved up and down is movably embedded in the upper end of the outer sleeve, and a rubber wheel is rotatably mounted on the top end of the inner rod, and the rotation of the rubber wheel facilitates the expansion support structure to enter the interior of the special-shaped tube.

[0009] Preferably, the rubber wheel is connected to the inner wall of the special-shaped tube by a rolling connection, the lower end of the embedded rod is located inside the outer sleeve and is fixedly sleeved with an anti-slip sheet, the lower end of the anti-slip sheet is located inside the outer sleeve and is installed with a first spring, the anti-slip sheet can prevent the embedded rod from detaching from the outer sleeve, and the upper and lower ends of the first spring are respectively movably abutted against the lower end surface of the anti-slip sheet and the bottom wall of the outer sleeve.

[0010] Preferably, the embedded rod is a hollow structure, and a positioning assembly is installed in the hollow part of the embedded rod, and the positioning assembly includes an electric push rod fixedly installed inside the embedded rod, and an extrusion block is fixedly installed on the lower end of the electric push rod, and the shape of the extrusion block is conical, and the lower side of the extrusion block is located inside the embedded rod and two symmetrically distributed movable blocks are installed, and the downward movement of the extrusion block can expand the distance between the two movable blocks, and notch grooves are provided at the upper ends of the end surfaces on the opposite sides of the two movable blocks, and two rubber blocks that can move left and right are movably embedded in the movable blocks on the outer wall of the embedded rod.

[0011] Preferably, a short connecting rod is installed between the movable block and the rubber block, and the two ends of the short connecting rod are embedded in the movable block and the rubber block, the short connecting rod passes through the embedded rod, and the connection between the short connecting rod and the embedded rod is a movable connection, the outer side of the short connecting rod is located between the movable block and the inner wall of the embedded rod and is movably sleeved with a second spring, and the two ends of the second spring are respectively movably abutted against the inner wall of the embedded rod and the movable block, two rows of symmetrically distributed arc-shaped convex tooth arrays are provided on the inner wall of the outer sleeve, and the connection between the rubber block and the arc-shaped convex teeth is a movable abutment.

[0012] Preferably, an adjustment component for adjusting the height of the embedded rod is provided on the outer side of the support rod, and the adjustment component includes an external thread fixedly arranged on the outer wall of the support rod, and an adjustment ring is threadedly sleeved on the outer side of the support rod through the external thread, and anti-slip grooves are provided on the outer wall of the adjustment ring, and a pull rope is fixedly embedded at the center of the lower end of the anti-slip sheet, the pull rope passes through the support rod, and is movably connected to the support rod, and the end of the pull rope away from the anti-slip sheet is fixedly connected to the adjustment ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a clamping structure and an expansion support structure. When the device is used to clamp the special-shaped tube, several groups of expansion support structures support the inner wall of the special-shaped tube. Under the action of the first spring in the expansion support structure, several groups of expansion clamping structures can adapt to the irregular inner wall of the special-shaped tube and support the special-shaped tube, thereby effectively preventing the special-shaped tube from falling off from between the two clamping disks during the grinding or polishing of the outer wall of the special-shaped tube. The operation is simple and convenient, and the clamping effect of the special-shaped tube is better.

[0014] The present invention installs an adjustment component and rotates an adjustment ring in the adjustment component. The rotation of the adjustment ring can drive a pull rope to be wound around the outer wall of the support rod, so that the embedded rod enters the interior of the outer sleeve under the pull of the pull rope. The embedded rod is in a contracted state, thereby facilitating a plurality of groups of expansion support structures to quickly enter the interior of the special-shaped tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the disassembly of the support rod and the movable seat in the clamping structure of the present invention; Figure 3 It is a schematic diagram of the connection state between the expansion support structure and the support rod of the present invention; Figure 4 It is a schematic diagram of the connection state between the expansion support structure and the adjustment component of the present invention; Figure 5 For the present invention Figure 4 A schematic side section diagram of the expanded support structure at B in the middle; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of the part at C in the middle; Figure 7 For the present invention Figure 5 Schematic diagram of the disassembly of the parts at C in the middle.

[0016] In the figure: 1. Clamping platform; 2. Forward and reverse motor; 3. Clamping structure; 301. Fixed seat; 302. Movable seat; 303. Support rod; 304. Ball bearing; 305. Bottom support plate; 306. Slider; 307. Clamping disk; 308. Rubber pad; 4. Expansion support structure; 401. Outer sleeve; 402. Embedded rod; 403. Rubber wheel; 404. Anti-slip sheet; 405. First spring; 5. Positioning assembly; 501. Electric push rod; 502. Extrusion block; 503. Movable block; 504. Rubber block; 505. Short connecting rod; 506. Second spring; 507. Notch groove; 508. Arc convex tooth; 6. Adjustment assembly; 601. External thread; 602. Adjustment ring; 603. Pull rope; 7. Reducer motor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1 See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A fixing fixture for finishing of castings shown in the figure includes a clamping platform 1, a forward and reverse motor 2 is fixedly installed on the outer side of the clamping platform 1, and the driving end of the forward and reverse motor 2 is fixedly connected to a threaded rod through a coupling. A clamping structure 3 for clamping the two ends of the special-shaped pipe is installed on the upper end of the clamping platform 1. The clamping structure 3 includes a fixed seat 301 fixedly installed on the upper end surface of the clamping platform 1 and a movable seat 302 movably installed on the upper end surface of the clamping platform 1, and support rods 303 are installed on the fixed seat 301 and the movable seat 302; an expansion support structure 4, the expansion support structure 4 for supporting the inner wall of the special-shaped pipe is fixedly installed on the outer side of the support rod 303.

[0019] See also Figure 5 The two support rods 303 are rotatably connected to the fixed seat 301 and the movable seat 302 through ball bearings 304 respectively. A bottom support plate 305 is fixedly installed on the lower end of the movable seat 302, and the lower end of the movable seat 302 is fixedly embedded in the upper end surface of the bottom support plate 305. The lower end surface of the bottom support plate 305 is movably abutted against the upper end surface of the clamping platform 1. A slider 306 is fixedly installed at the center of the lower end of the bottom support plate 305, and the connection between the slider 306 and the threaded rod is a threaded connection.

[0020] See also Figure 5The slider 306 is slidably connected to the clamping platform 1 through a limiting straight groove, and the outer sides of the two support rods 303 are fixedly sleeved with clamping plates 307, and the end faces of the two clamping plates 307 on opposite sides are fixedly adhered with rubber pads 308. A reduction motor 7 is fixedly installed on the side of the fixed seat 301 away from the movable seat 302, and the driving shaft of the reduction motor 7 is fixedly connected to the support rod 303 installed on the fixed seat 301 through a coupling.

[0021] See also Figure 5 The expansion support structure 4 includes a plurality of groups of outer sleeves 401 which are equidistantly distributed around the circumference and fixedly mounted on the outside of the support rods 303, and the outer sleeves 401 are close to the opposite ends of the two support rods 303. An inner rod 402 which can move up and down is movably embedded in the upper end of the outer sleeve 401, and a rubber wheel 403 is rotatably mounted on the top end of the inner rod 402.

[0022] See also Figure 5 The connection between the rubber wheel 403 and the inner wall of the special-shaped tube is a rolling connection. The lower end of the embedded rod 402 is located inside the outer sleeve 401 and is fixedly sleeved with an anti-slip sheet 404. The lower end of the anti-slip sheet 404 is located inside the outer sleeve 401 and is installed with a first spring 405. The upper and lower ends of the first spring 405 are respectively movably abutted against the lower end surface of the anti-slip sheet 404 and the bottom wall of the outer sleeve 401.

[0023] See also Figure 5 The embedded rod 402 is a hollow structure, and a positioning assembly 5 is installed in the hollow part of the embedded rod 402. The positioning assembly 5 includes an electric push rod 501 fixedly installed inside the embedded rod 402. An extrusion block 502 is fixedly installed at the lower end of the electric push rod 501, and the shape of the extrusion block 502 is conical. The lower side of the extrusion block 502 is located inside the embedded rod 402 and two symmetrically distributed movable blocks 503 are installed. Notch grooves 507 are provided at the upper ends of the end faces of the opposite sides of the two movable blocks 503. On the outer wall of the embedded rod 402, two rubber blocks 504 that can move left and right are movably embedded in the movable blocks 503.

[0024] See also Figure 5 A short connecting rod 505 is installed between the movable block 503 and the rubber block 504, and the two ends of the short connecting rod 505 are embedded in the movable block 503 and the rubber block 504. The short connecting rod 505 passes through the embedded rod 402, and the connection between the short connecting rod 505 and the embedded rod 402 is a movable connection. The outer side of the short connecting rod 505 is located between the movable block 503 and the inner wall of the embedded rod 402, and a second spring 506 is movably sleeved, and the two ends of the second spring 506 are movably abutted against the inner wall of the embedded rod 402 and the movable block 503 respectively. Two rows of symmetrically distributed arc-shaped convex teeth 508 arrays are provided on the inner wall of the outer sleeve 401.

[0025] The working principle for conveniently clamping the special-shaped tube is as follows: first, one end of the special-shaped tube is installed on the support rod 303 on the fixed seat 301. After the special-shaped tube is sleeved on the end of the support rod 303, several groups of expansion support structures 4 are located inside the special-shaped tube. Under the condition that the rubber wheel 403 is in rolling connection with the inner wall of the special-shaped tube, the special-shaped tube is pushed to the left so that the left end of the special-shaped tube abuts against the rubber pad 308 on the fixed seat 301. Then, the forward and reverse motor 2 is controlled to operate by the controller. The forward and reverse motor 2 drives the threaded rod to rotate through the coupling. Under the condition that the threaded rod is threadedly connected to the slider 306, the rotation of the threaded rod can drive the slider 306 and the movable seat 302 to move, so that several groups of expansion support structures on the movable seat 302 are inserted into the other end of the special-shaped tube. After both ends of the special-shaped tube abut against the rubber pad 308, the electric push rod 501 is controlled to operate by the controller. The electric push rod 501 drives the conical extrusion block 502 to move downward. During the downward movement, the extrusion block 502 squeezes the two movable blocks 503 through the notch groove 507, so that the distance between the two movable blocks 503 gradually increases. During the movement of the movable block 503, the movable block 503 drives the rubber block 504 to move outward from the embedded rod 402 through the short connecting rod 505 until the rubber block 504 abuts against the arc-shaped convex teeth 508 array on the inner wall of the outer sleeve 401. The rubber block 504 abuts against the arc-shaped convex teeth 508 to position the embedded rod 402 and prevent the embedded rod 402 from continuing to move in the outer sleeve 401, so that the plurality of expansion support structures can adapt to the irregular inner wall of the special-shaped tube and support the special-shaped tube to prevent the special-shaped tube from falling off from between the two clamping plates 307 when the outer wall of the special-shaped tube is ground or polished.

[0026] Embodiment 2 See also Figure 5 and Figure 6 This embodiment further explains Example 1. An adjustment component 6 for adjusting the height of the embedded rod 402 is provided on the outer side of the support rod 303. The adjustment component 6 includes an external thread 601 fixedly provided on the outer wall of the support rod 303. An adjustment ring 602 is threadedly sleeved on the outer side of the support rod 303 through the external thread 601. A pull rope 603 is fixedly embedded at the center of the lower end of the anti-slip sheet 404. The pull rope 603 passes through the support rod 303 and is connected to the support rod 303 in a movable manner. The end of the pull rope 603 away from the anti-slip sheet 404 is fixedly connected to the adjustment ring 602.

[0027] In this embodiment: before the special-shaped tube is sleeved on the outside of the plurality of expansion support structures 4, the adjusting ring 602 is rotated under the condition that the adjusting ring 602 is threadedly connected to the support rod 303 through the external thread 601. Since one end of the pull rope 603 is fixed to the adjusting ring 602, the pull rope 603 can be wound around the support rod 303 when the adjusting ring 602 is rotated. In the process of winding the pull rope 603 around the support rod 303, the inner rod 402 can be driven into the inner part of the outer sleeve 401 through the anti-slip sheet 404, so that the inner rod 402 is in a contracted state, so that the plurality of expansion support structures 4 can quickly enter the interior of the special-shaped tube. After the expansion support assembly 4 enters the interior of the special-shaped tube, the adjusting ring 602 is rotated in the opposite direction to loosen the pull rope 603. At this time, the rubber wheels 403 in the plurality of expansion support assemblies 4 will press against the irregular inner wall of the special-shaped tube to support the special-shaped tube.

[0028] Embodiment 3 See also Figure 2 This embodiment further illustrates other embodiments. A reduction motor 7 is fixedly mounted on one side of the fixed seat 301 away from the movable seat 302, and a driving shaft of the reduction motor 7 is fixedly connected to a support rod 303 mounted on the fixed seat 301 through a coupling.

[0029] In this embodiment: during the process of grinding and polishing the outer wall of the special-shaped tube, when the special-shaped tube needs to be resurfaced, the user controls the reduction motor 7 through the controller, and the reduction motor 7 drives the support rod 303 located on the mounting fixed seat 301 to rotate. Since the two ends of the special-shaped tube are respectively connected to the two clamping plates 307, the support rod 303 located on the movable seat 302 also rotates accordingly, so that the surface of the special-shaped tube can be resurfaced without repeatedly disassembling and assembling the clamp, and due to the performance of the reduction motor 7 itself, the special-shaped tube can be effectively prevented from rotating due to force during the processing of the special-shaped tube.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0031] 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 fixing fixture for finishing of castings, comprising a clamping platform (1), a forward and reverse motor (2) being fixedly mounted on the outer side of the clamping platform (1), a driving end of the forward and reverse motor (2) being fixedly connected to a threaded rod via a coupling, characterized in that: A clamping structure (3) for clamping the two ends of the special-shaped tube is installed at the upper end of the clamping platform (1), and the clamping structure (3) comprises a fixed seat (301) fixedly installed on the upper end surface of the clamping platform (1) and a movable seat (302) movably installed on the upper end surface of the clamping platform (1), and support rods (303) are installed on both the fixed seat (301) and the movable seat (302); An expansion support structure (4) is used to support the inner wall of the special-shaped tube, and the expansion support structure (4) is fixedly installed on the outer side of the support rod (303).

2. A fixing fixture for finishing of castings according to claim 1, characterized in that: The two support rods (303) are rotatably connected to the fixed seat (301) and the movable seat (302) respectively through ball bearings (304); a bottom support plate (305) is fixedly mounted on the lower end of the movable seat (302); the lower end of the movable seat (302) is fixedly embedded in the upper end surface of the bottom support plate (305); the lower end surface of the bottom support plate (305) is movably abutted against the upper end surface of the clamping platform (1); a slider (306) is fixedly mounted at the center of the lower end of the bottom support plate (305); and the slider (306) is connected to the threaded rod in a threaded connection.

3. A fixing fixture for finishing of castings according to claim 2, characterized in that: The slider (306) is slidably connected to the clamping platform (1) via a limiting straight groove, the outer sides of the two support rods (303) are fixedly sleeved with clamping plates (307), and the end surfaces of the two clamping plates (307) on opposite sides are fixedly bonded with rubber pads (308), and a reduction motor (7) is fixedly installed on the side of the fixed seat (301) away from the movable seat (302), and the driving shaft of the reduction motor (7) is fixedly connected to the support rod (303) installed on the fixed seat (301) via a coupling.

4. A fixing fixture for finishing of castings according to claim 3, characterized in that: The expansion support structure (4) comprises a plurality of groups of outer sleeves (401) which are equidistantly distributed in a circle and fixedly mounted on the outside of the support rods (303), and the outer sleeves (401) are close to opposite ends of the two support rods (303), and an inner rod (402) which can move up and down is movably embedded in the upper end of the outer sleeve (401), and a rubber wheel (403) is rotatably mounted on the top end of the inner rod (402).

5. A fixing fixture for finishing of castings according to claim 4, characterized in that: The rubber wheel (403) is connected to the inner wall of the special-shaped tube in a rolling connection. The lower end of the embedded rod (402) is located inside the outer sleeve (401) and is fixedly sleeved with an anti-slip sheet (404). The lower end of the anti-slip sheet (404) is located inside the outer sleeve (401) and is installed with a first spring (405). The upper and lower ends of the first spring (405) are respectively movably abutted against the lower end surface of the anti-slip sheet (404) and the bottom wall of the outer sleeve (401).

6. A fixing fixture for finishing of castings according to claim 4, characterized in that: The embedded rod (402) is a hollow structure, and a positioning assembly (5) is installed in the hollow part of the embedded rod (402). The positioning assembly (5) includes an electric push rod (501) fixedly installed inside the embedded rod (402), and an extrusion block (502) is fixedly installed at the lower end of the electric push rod (501). The shape of the extrusion block (502) is conical. The lower side of the extrusion block (502) is located inside the embedded rod (402) and two symmetrically distributed movable blocks (503) are installed. The upper ends of the end surfaces of the two movable blocks (503) on the opposite sides are both provided with notch grooves (507). On the outer wall of the embedded rod (402), two rubber blocks (504) that can move left and right are movably embedded at the movable blocks (503).

7. A fixing fixture for finishing of castings according to claim 6, characterized in that: A short connecting rod (505) is installed between the movable block (503) and the rubber block (504), and the two ends of the short connecting rod (505) are distributed and embedded in the movable block (503) and the rubber block (504). The short connecting rod (505) passes through the embedded rod (402) and is movably connected to the embedded rod (402). The outer side of the short connecting rod (505) is located between the inner wall of the movable block (503) and the embedded rod (402), and a second spring (506) is movably sleeved, and the two ends of the second spring (506) are movably abutted against the inner wall of the embedded rod (402) and the movable block (503), respectively. Two rows of symmetrically distributed arc-shaped convex teeth (508) are arranged on the inner wall of the outer sleeve (401).

8. The fixing fixture for finishing of castings according to claim 5, characterized in that: An adjustment component (6) for adjusting the height of the embedded rod (402) is arranged on the outer side of the support rod (303), and the adjustment component (6) comprises an external thread (601) fixedly arranged on the outer wall of the support rod (303); an adjustment ring (602) is threadedly sleeved on the outer side of the support rod (303) through the external thread (601); a pull rope (603) is fixedly embedded at the center of the lower end of the anti-slip sheet (404); the pull rope (603) passes through the support rod (303) and is movably connected to the support rod (303); and one end of the pull rope (603) away from the anti-slip sheet (404) is fixedly connected to the adjustment ring (602).

Images