Tool disc for compressor volute and machining tool

Abstract

The machining tool comprises a tool disc body, a center positioning assembly, an auxiliary positioning assembly and a plurality of clamping jaw assemblies, an auxiliary clamping groove and a plurality of sets of positioning clamping grooves are formed in the tool disc body, and the multiple sets of positioning clamping grooves extend to the periphery with the middle of the tool disc body as the center; one end of the center positioning assembly is detachably and fixedly connected with one auxiliary clamping groove, the other end of the center positioning assembly abuts against the upper top face of the workpiece, the clamping jaw assemblies are detachably and fixedly connected to the positioning clamping grooves and can slide along the positioning clamping grooves to adjust the moving stroke, and the multiple clamping jaw assemblies are matched and abut against the side face of the workpiece. Through cooperation of the center positioning assembly and the clamping jaw assembly, a traditional circumferential clamping and pressing mode is changed, dynamic shaking of a workpiece caused by eccentricity is effectively reduced, flexible and adjustable positioning pieces in other forms are additionally arranged, the clamping position and a clamping tool can be adjusted according to the shape of the workpiece, and the clamping device has the beneficial effects of being stable in clamping, flexible and adjustable in clamping mode, high in clamping efficiency and the like. And the practicability is high.

Description

Technical Field

[0001] This application relates to the field of machine tool chuck technology, and in particular to a tooling tray and machining fixture for machining irregularly shaped products such as polygonal and eccentric parts. Background Technology

[0002] Clamping devices are often used in the mechanical manufacturing process to fix the workpiece in place so that it can be used for construction or inspection.

[0003] Existing machining fixtures are mainly three-jaw chucks, which consist of a fixture plate and three locating jaws. The three locating jaws are mounted on the fixture plate and clamp the workpiece. However, the biggest drawback of existing three-jaw chucks is that they can only position and clamp conventional parts such as round and square shapes. Irregular / polygonal and eccentric parts cannot be positioned, clamped, or stabilized. For example, volute-type irregular products, such as volutes, are generally an important component of industrial compressors. They come in many models and sizes, and are cylindrical or elliptical in shape (irregular). There is a cylindrical irregular pipe joint outlet on one side of the workpiece, and the outlet is higher than the end face to be machined (the height varies depending on the model). The center of gravity of the workpiece is biased towards the outlet side. Because there are no supporting and clamping components around the three-jaw chuck, it is prone to movement during clamping. This leads to excessive offset of the center of gravity of the volute when machining large volutes, making it impossible to meet the tolerance requirements for the finishing of the central shaft hole and end face.

[0004] Therefore, there is an urgent need for a tooling tray and machining fixture that can clamp both conventional parts and stably clamp irregularly shaped products. Utility Model Content

[0005] The purpose of this application is to provide a tooling tray and machining tooling for compressor volutes, so as to solve the problem in the prior art that it is impossible to quickly clamp and position irregularly shaped or eccentric compressor volutes.

[0006] The embodiments of this application can be implemented through the following technical solutions:

[0007] A tooling disc for a compressor volute has a positioning slot and an auxiliary slot. The auxiliary slot is one or more of a central slot, a first auxiliary slot, and a second auxiliary slot. The positioning slot is provided in several groups, and the groups of positioning slots extend outward from the center of the tooling disc. The central slot is located in the center of the tooling disc, and the first auxiliary slot and / or the second auxiliary slot are located between two adjacent groups of positioning slots.

[0008] Furthermore, any one of the positioning slots includes a first positioning slot and a second positioning slot, the first positioning slot and the second positioning slot are arranged in parallel, and the two side walls above the second positioning slot are respectively provided with a plurality of U-shaped slots extending toward their sides.

[0009] Furthermore, the number of positioning slots is eight sets. The eight sets of positioning slots are two horizontal slots, two vertical slots, and an oblique slot located between adjacent horizontal and vertical slots. The two horizontal slots and two vertical slots divide the tooling tray into four quadrants.

[0010] The eight positioning slots are arranged symmetrically along the center line of the tooling tray.

[0011] Furthermore, the auxiliary slot includes a first auxiliary slot and a second auxiliary slot, one end of the first auxiliary slot and the second auxiliary slot both pointing to the central slot, and the positioning slot, the central slot, the first auxiliary slot and the second auxiliary slot do not interfere with each other within the tooling tray.

[0012] Furthermore, at least one of the first auxiliary slots is evenly distributed in each quadrant, and the other end of the first auxiliary slot extends to communicate with the outer wall of the tooling tray.

[0013] The second auxiliary card slot is provided in a quantity of four, and the four second auxiliary card slots are respectively set along the diagonal in each quadrant.

[0014] This application also provides a machining fixture for a compressor volute, used for clamping workpieces, including the aforementioned fixture tray;

[0015] It also includes a central positioning component and several claw components, wherein the claw components and the central positioning component are detachably fixedly connected to the slots of the tooling tray;

[0016] The top two ends of the central positioning component abut against the top surface of the workpiece, and several of the claw components cooperate to abut against the side of the workpiece.

[0017] Furthermore, one end of the center positioning component is detachably connected to the center slot, and the other end extends along the Z direction to pass through the top of the workpiece, and the top of the center positioning component has a travel adjustable along the Z direction.

[0018] Furthermore, the claw assembly is detachably fixedly connected to the positioning slot, and its movement stroke can be adjusted by sliding along the positioning slot;

[0019] The claw assembly includes a claw base, an adjustable claw, and a claw pad. At least one claw base is provided. The adjustable claw is connected to the positioning slot through the claw base. The claw pad is movably connected to the top of the adjustable claw and has a travel stroke at the top of the adjustable claw.

[0020] Furthermore, it also includes a limiting plate, which is a long strip structure. The limiting plate is disposed between the claw seat and the positioning slot, and is arranged to cross the positioning slot.

[0021] The lower end face of the claw seat is connected to the upper end face of the limiting plate by a key or groove that cooperates with each other, and the lower end face of the limiting plate is provided with a flat key that cooperates with the U-shaped groove to limit the claw seat to a designated position on the positioning groove.

[0022] Furthermore, it also includes at least one auxiliary positioning component, which is any structure of pad, chain, or support. The auxiliary positioning component is detachably fixed to the slot and can slide along the slot to adjust the travel, so as to fit and / or support and / or abut against the surface of the workpiece.

[0023] The tooling tray and machining fixture for a compressor volute provided in the embodiments of this application have at least the following beneficial effects:

[0024] This application maintains the workpiece in a relatively balanced state in the horizontal plane through a central positioning component, and then clamps the workpiece circumferentially through a jaw component, changing the traditional circumferential clamping method and effectively reducing the dynamic shaking of the workpiece caused by eccentricity. On this basis, a flexible and adjustable auxiliary positioning component is added, which allows the clamping position and clamping tools to be adjusted according to the shape of the workpiece. After a large number of processing tests, the dynamic range is reduced to 0%, and the workpiece accuracy is guaranteed. It has the advantages of stable clamping, flexible and adjustable clamping method, and strong practicality.

[0025] This application is more universal for different product models, including but not limited to volute products, and is applicable to rotary eccentric irregular workpieces, with the advantage of wide applicability.

[0026] This application improves processing efficiency, reduces the need for multiple clamping operations by personnel, and lowers processing costs, offering advantages such as high efficiency and low cost. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the machining tooling used in this application;

[0028] Figure 2 This is a schematic diagram of an application scenario for the machining tooling in this application;

[0029] Figure 3 This is a schematic diagram of the tooling tray in this application;

[0030] Figure 4 This is a schematic diagram of an exploded state of the claw assembly in this application;

[0031] Figure 5 for Figure 3 A magnified view of a portion of point A in the middle;

[0032] Figure 6 This is a schematic diagram of the installation of the limit plate in this application;

[0033] Figure 7 This is a schematic diagram of the limiting plate in this application;

[0034] Figure 8 This is a structural schematic diagram of the support column in this application;

[0035] Figure 9 This is a schematic diagram of the support structure in this application;

[0036] Figure 10 This is a schematic diagram of the structure of the pad block in this application.

[0037] Numbers in the diagram

[0038] 1-Tooling tray; 12-Positioning slot; 121-First positioning slot; 122-Second positioning slot; 1221-U-shaped slot; 13-Center slot; 14-First auxiliary slot; 15-Second auxiliary slot;

[0039] 2-Claw assembly; 21-Claw seat; 22-Adjustable claw; 23-Claw pad;

[0040] 3-Center positioning component; 31-Connecting rod; 32-Pressure plate; 33-Positioning bolt; 4-Limiting strip; 41-Flat key; 5-Shim; 6-Chain; 7-Support; 8-Support; 9-Workpiece; 10-Pan block. Detailed Implementation

[0041] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0042] In addition, for ease of understanding, various components on the drawings have been enlarged (thickened) or reduced (thinned), but this is not intended to limit the scope of protection of this application.

[0043] Singular forms of words also include plural meanings, and vice versa.

[0044] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0045] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.

[0046] Figure 1 This is a schematic diagram of the overall structure of a machining fixture for a compressor volute according to this application. Figure 2 This is a schematic diagram of an application scenario for the machining tooling used for the compressor volute in this application. For ease of description, it is shown below. Figure 1 Taking the X, Y, and Z directions as an example, as shown Figure 1 , Figure 2 As shown, a machining fixture for a compressor volute includes a fixture plate 1, a jaw assembly 2, and a center positioning assembly 3. The fixture plate 1 has a positioning slot 12 and an auxiliary slot, which is one or more of a center slot 13, a first auxiliary slot 14, and a second auxiliary slot 15. The center slot 13 is located in the middle of the fixture plate 1. One end of the center positioning assembly 3 is detachably fixed to the center slot 13, and the other end extends along the Z direction to pass through the top of the workpiece 9. The top position of the center positioning assembly 3 can be adjusted along the Z direction to abut the top of the center positioning assembly 3 against the top surface of the workpiece 9, thereby reducing the imbalance caused by the eccentricity of the workpiece 9 and keeping it relatively balanced in the horizontal direction.

[0047] Furthermore, the positioning slots 12 are provided in several groups, and the positioning slots 12 are provided in several groups extending outward from the center of the tooling plate 1. The end of the positioning slots 12 is connected to the outer wall of the tooling plate 1. The jaw assembly 2 is detachably fixed to the positioning slot 12 and can slide along the positioning slot 12 to adjust the travel. The jaw assembly 2 is provided in several groups, and the jaw assembly 2 cooperates to abut against the side of the workpiece 9 to clamp the workpiece 9. This changes the traditional clamping method and can effectively reduce the dynamic shaking caused by the eccentricity of the workpiece 9, ensuring the stability of the clamping.

[0048] Furthermore, the first auxiliary slot and / or the second auxiliary slot are disposed between two adjacent sets of positioning slots. Correspondingly, the machining fixture also includes at least one auxiliary positioning component. The auxiliary positioning component is any structure of chain 6, pad 5, or support column 7. The auxiliary positioning component is detachably fixedly connected to the slot, and the auxiliary positioning component is sleeved on and / or supports and / or abuts against the surface of the workpiece 9. The auxiliary slot and the auxiliary positioning component cooperate to allow the auxiliary positioning component to be selectively installed according to clamping requirements, and the clamping position can be flexibly selected, increasing the flexibility and stability of clamping.

[0049] Specifically, Figure 3 This is a schematic diagram of the structure of tooling tray 1 in this application, as shown below. Figure 3 As shown, the central slot 13 is located in the middle of the tooling tray 1 and has an extension length in one direction in the horizontal plane. The bottom of the central positioning component 3 is detachably fixed to the central slot 13 and the connection position can be adjusted along the extension direction of the central slot 13.

[0050] In some preferred embodiments, such as Figure 1 As shown, the center positioning assembly 3 includes a connecting rod 31, a pressure plate 32, and a positioning bolt 33. The connecting rod 31 extends along the Z direction, the pressure plate 32 extends horizontally and is connected to the upper part of the connecting rod 31, and the positioning bolt 33 is threaded to the top of the connecting rod 31 and limits the travel of the pressure plate 32 along the connecting rod 31. By rotating and adjusting the connection position of the positioning bolt 33 relative to the connecting rod 31, the connection position of the pressure plate 32 relative to the connecting rod 31 can be adjusted until the pressure plate 32 abuts against the upper top surface of the workpiece 9.

[0051] In some preferred embodiments, such as Figure 3As shown, the positioning slots 12 are provided in eight groups. The eight groups of positioning slots 12 are two horizontal slots, two vertical slots, and an oblique slot located between adjacent horizontal and vertical slots. The two horizontal slots and two vertical slots divide the tooling tray 1 into four quadrants.

[0052] In some preferred embodiments, the eight sets of positioning slots 12 are symmetrically arranged along the center line of the tooling tray 1. The positioning slots 12 arranged as described above can increase the clamping range of the jaw assembly 12 in a limited plane, and the installation position of the jaw assembly 2 can be flexibly selected according to the clamping requirements, so that by simply adjusting the position of the jaw assembly 2, it is possible to quickly and firmly clamp all kinds of commonly used parts.

[0053] Specifically, Figure 4 This is an exploded view of the claw assembly in this application, as shown below. Figure 4 As shown, the jaw assembly 2 includes a jaw base 21, an adjustable jaw 22, and a jaw pad 23. The number of jaw bases 21 is at least one. The adjustable jaw 22 is connected to the positioning slot 12 through the jaw base 21. The jaw pad 23 is movably connected to the top of the adjustable jaw 22 and has a moving stroke at the top of the adjustable jaw 22 for adjusting the moving stroke toward the workpiece 9, so that the jaw pad 23 can abut against the surface of the workpiece 9.

[0054] If the clamping position is too high, the overall height can be increased by adding one or more of the aforementioned jaw seats 21. Thus, depending on the clamping requirements, the various jaw components 2 on the same machining fixture can be set to the same or different heights, thereby expanding the applicable range of clamping.

[0055] In some preferred embodiments, the upper end of the claw seat 21 is equipped with an M20 T-slot and a U-shaped keyway to facilitate fixing the adjustable claw 22. The bottom sides of the claw seat 21 are provided with three holes for accommodating M20 bolts and a keyway for inserting the limiting plate 4. These bolt holes are used to securely connect the claw seat 21 to the positioning slot 12, while the keyway is used to precisely control its connection position on the positioning slot 12.

[0056] Specifically, such as Figure 5 As shown, the positioning slot 12 includes a first positioning slot 121 and a second positioning slot 122. The first positioning slot 121 and the second positioning slot 122 are arranged in parallel, and a plurality of U-shaped slots 1221 extending toward the side are respectively opened on the two side walls above the slot of the second positioning slot 122. The U-shaped slots 1221 are used as limiting slots.

[0057] In some preferred embodiments, such as Figure 1 , Figure 2 As shown, the machining fixture also includes a limiting plate 4, which is a long strip structure. The limiting plate 4 is disposed between the claw seat 21 and the positioning slot 12, and is arranged intersecting the positioning slot 12 to limit the connection position of the claw assembly 2 and increase the stability of the connection.

[0058] Specifically, Figure 6 This is a schematic diagram of the installation of the limit plate in this application. Figure 7 This is a schematic diagram of the limiting plate in this application, as shown below. Figure 6 , Figure 7 As shown, the lower end face of the claw seat 21 is connected to the upper end face of the limiting plate 4 by a key or groove that cooperates with each other, and the lower end face of the limiting plate 4 is provided with a flat key 41 that cooperates with the U-shaped groove 1221 to limit the claw seat 21 to a designated position on the positioning groove 12.

[0059] For ease of understanding, this embodiment takes a volute-type workpiece as an example to illustrate a preferred clamping scenario in which the auxiliary slot and the auxiliary positioning component cooperate.

[0060] Specifically, such as Figure 3 As shown, the auxiliary slot includes a first auxiliary slot 14. At least one first auxiliary slot 14 is evenly distributed in each quadrant. One end of the first auxiliary slot 14 points to the central slot 13, and the other end communicates with the outer side wall of the tooling tray 1. The first auxiliary slot 14 is used to detachably connect the chain 6 and / or the pad 5.

[0061] In some preferred embodiments, the number of the first auxiliary slots 14 is 24. These slots are arranged in groups of 6 and are evenly distributed in the four quadrants of the tooling tray for reasonable layout and to facilitate the placement of wire rods other than chains and other auxiliary tools.

[0062] To effectively avoid the problem of displacement caused by excessive eccentricity of the irregularly shaped nozzle of the volute-type workpiece, we cleverly used a chain 6 to bind and lock the nozzle on the basis of using adjustable pads 5 for support, so as to ensure that it is firmly fixed on the tooling plate 1, thereby ensuring the stability and accuracy of the entire device.

[0063] In some preferred embodiments, the shim 5 can also be installed on the positioning slot 12, as long as it does not interfere with other clamping components. The shim 5 is used to support the bottom surface of the volute-type workpiece or support the pipe joint, which can not only reduce eccentricity but also facilitate leveling the reference surface of the volute-type workpiece.

[0064] In some preferred embodiments, the auxiliary slot further includes a second auxiliary slot 15. The number of second auxiliary slots 15 is four. The four second auxiliary slots 15 are respectively arranged in the four quadrants of the tooling tray 1. Each second auxiliary slot 15 is arranged along its diagonal in each quadrant and points to the central slot 13. The four second auxiliary slots 15 are all at a 45-degree angle to the X-axis and are symmetrically distributed on the entire tray surface.

[0065] In some preferred embodiments, such as Figure 1 , Figure 8 , Figure 9 As shown, the support column 7 is detachably fixed to the second auxiliary slot 15 via the support 8, and its movement stroke can be adjusted by sliding along the slot, so as to support the support column 7 on the uneven surface below the volute-like workpiece.

[0066] In some preferred embodiments, the end face of the support column 7 is provided with a threaded hole, and correspondingly, the bottom of the support 8 is provided with a threaded hole that mates with it, so as to make it easy to firmly connect the support column 7 and the support 8. When connecting, the support 8 is installed on the second auxiliary slot 15. Multiple coaxially connected support columns 7 can be connected above the support 8, so that the support position can be adjusted according to the workpiece clamping requirements.

[0067] In some preferred embodiments, the support column 7 has various size specifications, for example, the specifications can be set to φ100x400mm, φ100x220mm and φ100x110mm respectively, to increase the flexibility during clamping.

[0068] In some preferred embodiments, the machining fixture further includes a pad 10, such as Figure 1 , Figure 10 As shown, the pad 10 is connected to the top of the support column 7 so that the support column 7 does not directly contact the workpiece 9, thereby avoiding potential collision damage that may occur if the pad iron comes into direct contact with the workpiece.

[0069] In some preferred embodiments, the positioning slot 12, the central slot 13, the first auxiliary slot 14, and the second auxiliary slot 15 do not interfere with each other within the tooling tray 1.

[0070] In some preferred embodiments, the positioning slot 12, the central slot 13, the first auxiliary slot 14, and the second auxiliary slot 15 are all T-shaped slots. Accordingly, each component is detachably fixed to the slot by bolts to increase the stability of the connection and increase the flexibility of the installation position adjustment.

[0071] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A tooling disc for a compressor volute, having a positioning slot (12) thereon, characterized in that: It also has auxiliary slots, which are one or more of the following: central slot (13), first auxiliary slot (14), and second auxiliary slot (15). The number of positioning slots (12) is several groups. The positioning slots (12) of several groups extend outward from the center of the tooling tray (1). The central slot (13) is located in the center of the tooling tray (1). The first auxiliary slot (14) and / or the second auxiliary slot (15) are located between two adjacent groups of positioning slots (12).

2. The tooling tray for compressor volute according to claim 1, characterized in that: The positioning slot (12) of any group includes a first positioning slot (121) and a second positioning slot (122). The first positioning slot (121) and the second positioning slot (122) are arranged in parallel, and a plurality of U-shaped slots (1221) extending toward the side are respectively opened on the two side walls above the slot of the second positioning slot (122).

3. The tooling tray for compressor volute according to claim 1, characterized in that: The number of positioning slots (12) is eight. The eight positioning slots (12) are two horizontal slots, two vertical slots, and an oblique slot located between adjacent horizontal slots and vertical slots. The two horizontal slots and two vertical slots divide the tooling tray (1) into four quadrants. The positioning slots (12) of the eight groups are arranged symmetrically along the center line of the tooling plate (1).

4. The tooling tray for a compressor volute according to claim 3, characterized in that: One end of the first auxiliary slot (14) and the second auxiliary slot (15) both point to the central slot (13), and the positioning slot (12), the central slot (13), the first auxiliary slot (14), and the second auxiliary slot (15) do not interfere with each other within the tooling tray (1).

5. The tooling tray for a compressor volute according to claim 4, characterized in that: At least one first auxiliary slot (14) is evenly distributed in each quadrant, and the other end of the first auxiliary slot (14) extends to communicate with the outer side wall of the tooling tray (1). The number of the second auxiliary card slots (15) is four, and the four second auxiliary card slots (15) are respectively set along the diagonal in each quadrant.

6. A machining fixture for a compressor volute, used for clamping workpiece (9), characterized in that: Includes the tooling tray (1) as described in any one of claims 1 to 5; It also includes a central positioning component (3) and several claw components (2), wherein the claw components (2) and the central positioning component (3) are detachably fixedly connected to the slots of the tooling tray (1); The top two ends of the center positioning component (3) abut against the top surface of the workpiece (9), and several of the claw components (2) cooperate to abut against the side of the workpiece (9).

7. The machining fixture for the compressor volute according to claim 6, characterized in that: One end of the center positioning component (3) is detachably connected to the center slot (13), and the other end extends along the Z direction to pass through the top of the workpiece (9), and the top of the center positioning component (3) has a travel adjustable along the Z direction.

8. The machining fixture for the compressor volute according to claim 7, characterized in that: The claw assembly (2) is detachably fixed to the positioning slot (12) and can slide along the positioning slot (12) to adjust the movement stroke; The claw assembly (2) includes a claw seat (21), an adjustable claw (22), and a claw pad (23). The number of claw seats (21) is at least one. The adjustable claw (22) is connected to the positioning slot (12) through the claw seat (21). The claw pad (23) is movably connected to the top of the adjustable claw (22) and has a travel stroke at the top of the adjustable claw (22).

9. The machining fixture for the compressor volute according to claim 8, characterized in that: It also includes a limiting plate (4), which is a long strip structure. The limiting plate (4) is disposed between the claw seat (21) and the positioning slot (12) and is arranged to cross the positioning slot (12). The lower end face of the claw seat (21) is connected to the upper end face of the limiting plate (4) by a key or groove that cooperates with each other. The lower end face of the limiting plate (4) is provided with a flat key (41) that cooperates with the U-shaped groove (1221) to limit the claw seat (21) to a designated position on the positioning groove (12).

10. The machining fixture for the compressor volute according to claim 7, characterized in that: It also includes at least one auxiliary positioning component, which is any one of the following structures: pad (5), chain (6), and support (7). The auxiliary positioning component is detachably fixed to the slot and can slide along the slot to adjust the travel so as to fit and / or support and / or abut against the surface of the workpiece (9).

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