A tooling fixture for machining a casting

Abstract

The utility model belongs to mechanical parts processing technical field, and disclose a kind of tooling fixture for processing casting, including No. 1 base, the rear end of No. 1 base is movably connected with No. 2 base.The utility model is provided with No. 1 base, No. 2 base, support disc and sawtooth block, and operator moves connecting block by pulling push block, connecting block moves and drives sawtooth block to move together, and sawtooth block moves and separates from the clamping of sawtooth groove, and compresses No. 1 reset spring, at this moment, the fixing between No. 1 base, No. 2 base and support disc is opened, and support disc can be rotated, and support disc rotates and drives fixed workpiece to rotate together, and casting is prone to small deviation of appearance and hole position due to casting process, and traditional fixture needs to be disassembled and repositioned for clamping multiple times, and the operation is complicated, and the whole can realize that fixture drives workpiece to rotate and adjust, and multiple surface machining can be completed at one time.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical parts processing technology, specifically a tooling fixture for processing castings. Background Technology

[0002] As a core auxiliary device in casting processing, tooling fixtures are key process equipment for achieving precise positioning of machine tools, cutting tools and workpieces. By fastening the workpiece, they ensure the correct relative position of the three during the processing, thereby ensuring the precision of casting processing (such as dimensional tolerances and geometric tolerances). They are widely used in turning, milling, drilling and grinding of castings, covering various casting production fields such as automotive parts, valves, and housings. However, the implementation methods of the above-mentioned traditional tooling fixtures still have the following problems: In terms of multi-face machining, most fixtures are fixed structures and cannot drive the workpiece to rotate. When the casting needs to be machined with multiple sides, end faces or circumferentially distributed holes, the workpiece needs to be disassembled and re-clamped multiple times. This not only increases the operation time, but also easily causes the cumulative error of the reference due to multiple positioning, resulting in a decrease in machining accuracy. For large and heavy castings, traditional fixtures require manual flipping of the workpiece to achieve multi-face machining, which is not only labor-intensive, but also poses risks of bumps and safety, and is difficult to adapt to the needs of mass production. Therefore, it is necessary to improve them. Utility Model Content

[0003] The purpose of this utility model is to address the above problems. This utility model provides a tooling fixture for machining castings, which has the advantage of being rotatable and adjustable.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tooling fixture for machining castings, comprising a first base, a second base movably connected to the rear end of the first base, a support plate movably sleeved between the first base and the second base, a serrated groove on the outer surface of the support plate, a support plate fixedly connected to the top of the support plate, a fixed plate fixedly installed on the top of the support plate, a fixing clamp fixedly connected to the left side of the top of the fixed plate, a rectangular groove inside the first base, a connecting block movably sleeved inside the rectangular groove, a first return spring fixedly installed on the front of the connecting block, and a first fixed spring fixedly connected to the top of the connecting block. A push block is attached, and a serrated block is fixedly installed at the rear end of the connecting block. The outer surface of the serrated block is movably connected to the inner surface of the serrated groove. Limiting grooves are opened on both the left and right sides of the push block. A U-shaped block is fixedly connected to the top of the first base. A connecting rod is movably sleeved inside the U-shaped block. A second return spring is fixedly connected to one end of the connecting rod, and a pressing block is fixedly installed at the other end. The other end of the second return spring is fixedly connected to the inner surface of the U-shaped block. A limiting block is fixedly connected to the front of the connecting rod. The outer surface of the limiting block is movably connected to the inner surface of the limiting groove. The outer end of the limiting block passes through the U-shaped block and extends to the outside of the U-shaped block.

[0005] In a preferred embodiment of this invention, the outer end of the first reset spring is fixedly connected to the front side inside the rectangular groove, and the top end of the push block penetrates the rectangular groove and is movably connected to the inner wall of the rectangular groove.

[0006] In a preferred embodiment of this invention, the outer surface of the push block is movably connected to the inner surface of the U-shaped block, and fixing blocks are fixedly connected to both the left and right sides of the front end of the second base.

[0007] As a preferred embodiment of this utility model, the number of fixing blocks is two, and the outer surface of the fixing blocks is movably connected to the inner surface of the first base.

[0008] As a preferred embodiment of this utility model, each of the two fixing blocks has a slot on its opposite side, and a locking block is movably fitted inside the slot.

[0009] As a preferred embodiment of this utility model, a No. 3 reset spring is fixedly connected to the inner end of the card block, and the other end of the No. 3 reset spring is fixedly connected to the inner surface of the card slot.

[0010] As a preferred embodiment of this utility model, connecting plates are fixedly connected to both the left and right sides of the No. 1 base, and connecting grooves are provided on both the left and right sides of the No. 1 base. The inner surface of the connecting groove is movably sleeved with the outer surface of the card block. A wing screw is threaded into the internal thread of the connecting plate, and the bottom end of the wing screw is movably sleeved with the top end of the card block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a No. 1 base, a No. 2 base, a support plate, and a sawtooth block, allows the operator to move the connecting block by pulling the push block. When the connecting block moves, it will also move the sawtooth block. When the sawtooth block moves, it will disengage from the sawtooth groove, compressing the No. 1 return spring. At this time, the fixation between the No. 1 base, the No. 2 base, and the support plate will open, and the support plate can rotate. When the support plate rotates, it will also rotate the fixed workpiece. Due to the casting process, castings are prone to slight deviations in shape and hole position. Traditional fixtures require multiple disassemblies and repositioning, which is cumbersome. The whole system can realize the adjustment of the workpiece rotation by the fixture. Multi-face processing can be completed in one clamping, which greatly reduces the clamping time and avoids the cumulative error of the reference from multiple clampings.

[0012] 2. This utility model uses a fixing block, a locking block, a third reset spring, and a connecting plate. By rotating the wing screw, the locking block is opened. Pressing the locking block releases it from the connecting groove and compresses the third reset spring. At this time, the fixing of the first and second bases is opened, and they can be disassembled. When a component is partially worn or damaged, there is no need to replace the whole unit; only the faulty module needs to be disassembled and replaced. The idle module can be stored and maintained separately, reducing the wear and tear when the whole unit is idle and also reducing the labor intensity of subsequent maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a structural schematic diagram of the No. 1 base of this utility model; Figure 4 This is a schematic diagram of the connecting block structure of this utility model; Figure 5 This is a schematic diagram of the card block structure of this utility model; Figure 6 This is a schematic diagram of the U-shaped block structure of this utility model; Figure 7 This is a cross-sectional view of the U-shaped block of this utility model.

[0014] In the diagram: 1. Base No. 1; 2. Base No. 2; 3. Support plate; 4. Serrated groove; 5. Support plate; 6. Fixing plate; 7. Fixing clamp; 8. Rectangular groove; 9. Connecting block; 10. Return spring No. 1; 11. Push block; 12. Serrated block; 13. Limiting groove; 14. U-shaped block; 15. Connecting rod; 16. Return spring No. 2; 17. Pressing block; 18. Limiting block; 19. Fixing block; 20. Slot; 21. Slot; 22. Return spring No. 3; 23. Connecting groove; 24. Connecting plate; 25. Wing screw. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1 to 7 As shown, this utility model provides a tooling fixture for machining castings, including a first base 1, a second base 2 movably connected to the rear end of the first base 1, a support plate 3 movably sleeved between the first base 1 and the second base 2, a serrated groove 4 formed on the outer surface of the support plate 3, a support plate 5 fixedly connected to the top of the support plate 3, a fixed plate 6 fixedly installed on the top of the support plate 5, a fixed clamp 7 fixedly connected to the left side of the top of the fixed plate 6, a rectangular groove 8 formed inside the first base 1, a connecting block 9 movably sleeved inside the rectangular groove 8, a first return spring 10 fixedly installed on the front of the connecting block 9, a push block 11 fixedly connected to the top of the connecting block 9, and a fixed clamp 11 at the rear end of the connecting block 9. A serrated block 12 is installed, with its outer surface movably connected to the inner surface of the serrated groove 4. Limiting grooves 13 are provided on both the left and right sides of the push block 11. A U-shaped block 14 is fixedly connected to the top of the first base 1. A connecting rod 15 is movably sleeved inside the U-shaped block 14. A second reset spring 16 is fixedly connected to one end of the connecting rod 15, and a pressing block 17 is fixedly installed to the other end. The other end of the second reset spring 16 is fixedly connected to the inner surface of the U-shaped block 14. A limiting block 18 is fixedly connected to the front of the connecting rod 15. The outer surface of the limiting block 18 is movably connected to the inner surface of the limiting groove 13. The outer end of the limiting block 18 passes through the U-shaped block 14 and extends to the outside of the U-shaped block 14.

[0017] In use, the workpiece is placed on the fixed plate 6, and the right-side clamp is rotated to fix the workpiece in conjunction with the fixed clamp 7. When different surfaces of the workpiece need to be processed, the operator presses the pressing block 17 to move the connecting rod 15. There are two connecting rods 15, arranged vertically, which compresses the second return spring 16, and the limit block 18 also moves accordingly. When the two limit blocks 18 move in opposite directions, they will disengage from the push block 11, opening the fixation. At this time, the operator pulls the push block 11 to move the connecting block 9 forward. The movement causes the sawtooth block 12 to disengage from the sawtooth groove 4, compressing the first return spring 10. At this time, the fixation between the support plate 3 and the first base 1 and the second base 2 is opened, and the support plate 3 can rotate. When the support plate 3 rotates, it will drive the fixed workpiece to rotate together, rotating the workpiece to the required processing surface. Then, the elastic force of the first return spring 10 drives the sawtooth block 12 to reset, so that the first base 1, the second base 2 and the support plate 3 are in a fixed state. The overall adjustment is convenient, and the processing surface can be adjusted without disassembling the workpiece.

[0018] Among them, the outer end of the first reset spring 10 is fixedly connected to the front side inside the rectangular groove 8, and the top end of the push block 11 passes through the rectangular groove 8 and is movably connected to the inner wall of the rectangular groove 8.

[0019] The serrated block 12 is moved by the elastic force of the first reset spring 10, thereby fixing the first base 1, the second base 2 and the support plate 3. The design of the push block 11 makes it convenient for the operator to pull the connecting block 9 to move.

[0020] Among them, the outer surface of the push block 11 is movably connected to the inner surface of the U-shaped block 14, and the left and right sides of the front end of the second base 2 are fixedly connected to the fixing blocks 19.

[0021] The design of the push block 11 fitting snugly with the U-shaped block 14 is to ensure subsequent fixation and prevent the push block 11 from moving due to processing.

[0022] There are two fixing blocks 19, and the outer surface of the fixing block 19 is movably connected to the inner surface of the base 1.

[0023] The design of fixing block 19 increases the contact area between base 1 and base 2, improving the stability of their connection.

[0024] Each of the two fixing blocks 19 has a slot 20 on its opposite side, and a locking block 21 is movably fitted inside the slot 20.

[0025] The design of the locking block 21 can ensure the fixation between the first base 1 and the second base 2, and the design of the inclined surface of the locking block 21 facilitates the connection between the first base 1 and the second base 2.

[0026] Among them, the inner end of the card block 21 is fixedly connected to the No. 3 reset spring 22, and the other end of the No. 3 reset spring 22 is fixedly connected to the inner surface of the card slot 20.

[0027] The smooth outer surface of the locking block 21 reduces the resistance during the connection process between the first base 1 and the second base 2. The locking block 21 can be pushed to perform a reset operation by the elastic force of the third reset spring 22.

[0028] Among them, the left and right sides of the No. 1 base are fixedly connected to the connecting plate 24, and the left and right sides of the No. 1 base are provided with the connecting groove 23. The inner surface of the connecting groove 23 is movably sleeved with the outer surface of the card block 21. The internal thread of the connecting plate 24 is fitted with the wing screw 25, and the bottom end of the wing screw 25 is movably sleeved with the top end of the card block 21.

[0029] After the locking block 21 is engaged, the operator rotates the wing screw 25 so that its lower end contacts the top end of the locking block 21, thereby fixing the locking block 21 and ensuring the stability of the connection between the first base 1 and the second base 2.

[0030] Working principle and usage process of this utility model: During use, the operator places the workpiece on the fixed plate 6 and rotates the right-side clamp to fix the workpiece in conjunction with the fixed clamp 7. When different surfaces of the workpiece need to be processed, the operator presses the pressing block 17 to move the connecting rod 15, compressing the second return spring 16. During the movement of the connecting rod 15, the limiting block 18 will move together. When the two limiting blocks 18 move in opposite directions, they will disengage from the limiting groove 13, opening the fixation on the push block 11. At this time, the operator pulls the push block 11 to move the connecting block 9. During the movement of the connecting block 9, the serrated block 12 will move together. When the serrated block 12 moves, it will disengage from the serrated groove 4, compressing the first return spring 10. At this time, the first base... 1. Once the fixing between the second base 2 and the support plate 3 is opened, the support plate 3 can rotate. When the support plate 3 rotates, it will drive the fixed workpiece to rotate together, rotating the workpiece to the required processing surface. Then, the spring force of the first return spring 10 drives the sawtooth block 12 to reset, so that the first base 1, the second base 2 and the support plate 3 are in a fixed state. When the push block 11 is reset, it will fit with the U-shaped block 14. The operator releases the pressing block 17, so that the second return spring 16 drives the connecting rod 15 to reset, thereby making the limit block 18 engage with the limit groove 13, so that the push block 11 and the U-shaped block 14 are in a fixed state, which improves the overall stability and makes the overall adjustment convenient. The processing surface can be adjusted without disassembling the workpiece, which meets the usage requirements.

[0031] During subsequent maintenance, the operator rotates and removes the wing screw 25, opening the fixing of the locking block 21. At this time, the operator presses the locking block 21 to disengage it from the connecting groove 23, compressing the third return spring 22. At this time, the fixing of the first base 1 and the second base 2 is opened, and the two can be disassembled. At the same time, the support plate 3 is also disconnected from the connection of the first base 1 and the second base 2. The overall detachable design facilitates subsequent maintenance and reduces the difficulty of disassembly.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling fixture for machining castings, comprising a base (1), characterized in that: The rear end of the first base (1) is movably connected to the second base (2). A support plate (3) is movably sleeved between the first base (1) and the second base (2). A serrated groove (4) is formed on the outer surface of the support plate (3). A support plate (5) is fixedly connected to the top of the support plate (3). A fixed plate (6) is fixedly installed on the top of the support plate (5). A fixing clamp (7) is fixedly connected to the left side of the top of the fixed plate (6). A rectangular groove (8) is formed inside the first base (1). A connecting block (9) is movably sleeved inside the rectangular groove (8). A first return spring (10) is fixedly installed on the front of the connecting block (9). A push block (11) is fixedly connected to the top of the connecting block (9). A serrated block (12) is fixedly installed at the rear end of the connecting block (9). The outer surface of the sawtooth block (12) is movably connected to the inner surface of the sawtooth groove (4). Limiting grooves (13) are opened on both the left and right sides of the push block (11). A U-shaped block (14) is fixedly connected to the top of the first base (1). A connecting rod (15) is movably sleeved inside the U-shaped block (14). A second reset spring (16) is fixedly connected to one end of the connecting rod (15), and a pressing block (17) is fixedly installed at the other end. The other end of the second reset spring (16) is fixedly connected to the inner surface of the U-shaped block (14). A limiting block (18) is fixedly connected to the front of the connecting rod (15). The outer surface of the limiting block (18) is movably connected to the inner surface of the limiting groove (13). The outer end of the limiting block (18) passes through the U-shaped block (14) and extends to the outside of the U-shaped block (14).

2. The tooling fixture for machining castings according to claim 1, characterized in that: The outer end of the first reset spring (10) is fixedly connected to the front side inside the rectangular groove (8), and the top end of the push block (11) passes through the rectangular groove (8) and is movably connected to the inner wall of the rectangular groove (8).

3. The tooling fixture for machining castings according to claim 1, characterized in that: The outer surface of the push block (11) is movably connected to the inner surface of the U-shaped block (14), and the left and right sides of the front end of the second base (2) are fixedly connected to the fixing blocks (19).

4. The tooling fixture for machining castings according to claim 3, characterized in that: The number of fixed blocks (19) is two, and the outer surface of the fixed blocks (19) is movably connected to the inner surface of the first base (1).

5. A tooling fixture for machining castings according to claim 3, characterized in that: Both of the two fixing blocks (19) have slots (20) on their opposite sides, and a locking block (21) is movably fitted inside the slots (20).

6. A tooling fixture for machining castings according to claim 5, characterized in that: The inner end of the card block (21) is fixedly connected to a No. 3 reset spring (22), and the other end of the No. 3 reset spring (22) is fixedly connected to the inner surface of the card slot (20).

7. A tooling fixture for machining castings according to claim 1, characterized in that: The first base (1) is fixedly connected to the left and right sides with connecting plates (24), and the first base (1) is provided with connecting grooves (23) on the left and right sides. The inner surface of the connecting groove (23) is movably sleeved with the outer surface of the card block (21). The connecting plate (24) is threaded with a wing screw (25), and the bottom end of the wing screw (25) is movably sleeved with the top end of the card block (21).

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