Turn-milling composite clamp matched with vehicle-mounted compressor shell

Abstract

The invention relates to the field of turning and milling clamps, in particular to a turning and milling composite clamp matched with a vehicle-mounted compressor shell. The lower positioning block is used for carrying and pre-positioning the bottom of the compressor shell; the pre-positioning assembly is used for carrying and pre-positioning the bottom of the left connecting part and the bottom of the lower connecting part of the compressor shell respectively; the pressing assembly is used for pressing the top of the left connecting part and the top of the upper connecting part of the compressor shell; and the lateral positioning assembly is used for pre-positioning at least two parts of the side surface of the compressor shell. Multiple different parts of the compressor shell can be positioned, the repeated positioning precision is high, the compressor shell can be accurately fixed, it is guaranteed that the position of a workpiece is stable and not prone to deviation in the turn-milling machining process, the machining precision is guaranteed, the compressor shell is fixed in different directions, and the machining efficiency is improved. The machining requirements of complex positioning products are met, and therefore it is guaranteed that the size precision and the surface quality of the compressor shell meet the requirements.

Description

Technical Field

[0001] The present application relates to the field of turning and milling fixtures, and in particular to a turning and milling composite fixture adapted for a vehicle-mounted compressor housing. Background Art

[0002] With the rapid development of the automotive industry, the requirements for the precision and performance of the vehicle compressor housing as one of the key components are increasing day by day. The fixtures used in traditional turning and milling processing often cannot meet the processing requirements of high-precision and complex-shaped parts, which easily leads to workpiece offset in actual production, seriously affecting product quality. In addition, the existing processing fixtures have a relatively simple fixing method for special-shaped parts, usually only single-point or multi-point plane fixing, which is difficult to adapt to the processing requirements of complex-shaped products.

[0003] Currently, commonly used turning and milling fixtures include manual chuck fixtures, hydraulic fixtures and other forms. Among them, manual chuck fixtures clamp the workpiece by manually tightening bolts. This method is not only inefficient, but also greatly affected by human factors, which can easily cause the workpiece to loosen. Although hydraulic fixtures can effectively increase the clamping force, there is still a problem of unstable positioning when facing complex and irregular compressor shells. In addition, there are some cylinder-driven fixture systems. Although they can achieve automated clamping to a certain extent, due to the small number of clamping points, it is also difficult to meet the needs of high-precision processing.

[0004] Regarding the above-mentioned related technologies, various traditional fixtures generally have problems such as low positioning accuracy and poor clamping stability, which is more obvious when processing vehicle compressor shells with complex shapes and high precision requirements. Summary of the invention

[0005] In order to improve the accuracy and stability of fixture positioning, the present application provides a turning and milling composite fixture adapted for a vehicle-mounted compressor housing.

[0006] The present application provides a turning and milling composite fixture adapted to a vehicle-mounted compressor housing, which adopts the following technical solution: A turning and milling composite fixture adapted for a vehicle-mounted compressor housing, comprising: The base, which serves as the basic component; A lower positioning block is arranged on the base and receives and pre-positions the bottom of the compressor housing; A pre-positioning component is arranged on the base and located on both sides of the lower positioning block, and the pre-positioning component receives and pre-positions the bottom of the left connecting part and the bottom of the lower connecting part of the compressor housing respectively; A pressing assembly is arranged on the base and corresponds to the position of the pre-positioning assembly, and the pressing assembly presses the top of the left connecting part and the top of the upper connecting part of the compressor shell respectively; The lateral positioning assembly is arranged on the base and pre-positions at least two parts of the side surface of the compressor shell.

[0007] By adopting the above technical solution, multiple different parts of the compressor shell can be positioned, so that the repeated positioning accuracy is high, the compressor shell can be accurately fixed, and the position of the workpiece during the turning and milling process is ensured to be stable and not prone to deviation, thereby ensuring the processing accuracy. The compressor shell can also be fixed from different directions to meet the processing needs of complex positioning products, thereby ensuring that the dimensional accuracy and surface quality of the compressor shell meet the requirements.

[0008] Optionally, the pre-positioning assembly includes a first positioning frame arranged on the base, a first protruding frame arranged on a top side of the first positioning frame, a second positioning frame arranged on the base, and a second protruding frame arranged on a top side of the second positioning frame, the first positioning frame and the second positioning frame are respectively located on two opposite sides of the lower positioning block, a first bottom positioning block is arranged on the top of the first positioning frame for pre-positioning the bottom of the left connecting part of the compressor shell, a first convex positioning block is arranged on the side of the first positioning frame for pre-positioning the left protruding part of the compressor shell, a first side positioning block is arranged on one side of the first protruding frame for pre-positioning the end of the left connecting part of the compressor shell, a second bottom positioning block is arranged on the top of the second positioning frame for pre-positioning the bottom of the lower connecting part of the compressor shell, and a second side positioning block is arranged on one side of the second protruding frame for pre-positioning the upper connecting part end and the lower connecting part end of the compressor shell.

[0009] By adopting the above technical scheme, multiple first convex surface positioning blocks can pre-position the left protruding portion of the compressor shell, multiple first bottom surface positioning blocks can pre-position the bottom of the left connecting portion of the compressor shell, the first protruding frame can pre-position the left connecting portion end of the compressor shell, the second bottom surface positioning block can pre-position the bottom of the lower connecting portion of the compressor shell, and the two second side surface positioning blocks can pre-position the upper connecting portion end and the lower connecting portion end of the compressor shell, thereby pre-positioning different parts of the compressor shell.

[0010] Optionally, the clamping assembly is set into two groups, and the clamping assembly includes a cylinder shell arranged on the base, a cylinder piston rod passing through both ends of the cylinder shell, a hinge plate hinged to the top of the cylinder piston rod, and clamping blocks hinged to the top of the cylinder shell and the top of the hinge plate at both ends, respectively. The clamping blocks of the two groups of clamping assemblies respectively clamp the top of the left connecting part and the top of the upper connecting part of the compressor shell.

[0011] By adopting the above technical solution, the two cylinder piston rods are driven to move downward, which can drive the other end of the clamping block to press downward, so that the clamping blocks of the two sets of clamping assemblies can respectively clamp the top of the left connecting part and the top of the upper connecting part of the compressor shell.

[0012] Optionally, the cylinder piston rod is slidably connected to the base, a linkage arm is provided between the cylinder piston rods of the two groups of the clamping assemblies, a pressure sensor is provided in the base, and the middle part of the linkage arm contacts the detection end of the pressure sensor.

[0013] By adopting the above technical solution, the pressure applied by the clamping blocks of the two sets of clamping assemblies on the compressor shell can be transmitted to the pressure sensor through the linkage arm. The detection end of the pressure sensor can detect the clamping force in real time to avoid damaging the surface of the compressor shell as much as possible.

[0014] Optionally, the lateral positioning assembly includes a lateral positioning seat arranged on the base, a plurality of lateral positioning components arranged on the lateral positioning seat and on the second protruding frame, the lateral positioning components on the lateral positioning seat and the lateral positioning components on the second protruding frame respectively pre-position different parts of the compressor shell, the lateral positioning components include a movable rod slidably passed through the lateral positioning seat and the second protruding frame, a positioning wheel rotatably arranged at one end of the movable rod, and a positioning screw threadedly passed through the lateral positioning seat and the second protruding frame, the positioning wheel pre-positions the side of the compressor shell, and the end of the positioning screw is used to tighten the movable rod.

[0015] By adopting the above technical solution, after loosening the positioning screw, the movable rod can be adjusted to adjust the position of the positioning wheel, and then the positioning screw can be tightened. In actual use, the initial positioning accuracy can be roughly adjusted according to actual conditions.

[0016] Optionally, the movable rod includes a sleeve slidably inserted into the lateral positioning seat and the second protruding frame, a mounting rod slidably inserted into one end of the sleeve, a movable screw rotatably connected to the sleeve, and a knob arranged at one end of the movable screw. A tightening groove is opened on the outer side of the sleeve along its length direction, the end of the positioning screw cooperates with the tightening groove, the positioning wheel is rotatably arranged on the mounting rod, and the movable screw is threadedly connected to the mounting rod.

[0017] By adopting the above technical solution, the knob is turned, and since the movable screw rod is threadedly connected with the mounting rod, the mounting rod can be driven to slide in the sleeve, so as to finely adjust the position of the positioning wheel.

[0018] Optionally, the lateral positioning seat and the second protruding frame are both provided with a limiting component for limiting the rotation of the head of the positioning screw and the knob, the limiting component includes a connecting seat arranged on the lateral positioning seat and the second protruding frame, a cross bar slidably passed through the connecting seat, a cross tightening seat arranged at one end of the cross bar and tightly matched with the head of the positioning screw, a cross spring arranged between the cross tightening seat and the connecting seat, a longitudinal rod arranged on the cross bar through an adjusting component, and a longitudinal tightening seat arranged at one end of the longitudinal rod and tightly matched with the knob, the relative position between the cross bar and the longitudinal rod is adjusted by the adjusting component, and the longitudinal tightening seat is elastic.

[0019] By adopting the above technical solution, the transverse spring can give a thrust to the transverse clamping seat, so that when there is no need to rotate the positioning screw, it can play a limiting role on the positioning screw, making it difficult for the positioning screw to loosen under the vibration generated by subsequent turning and milling, thereby improving the stability of the lateral positioning assembly.

[0020] Optionally, the adjustment assembly includes a sliding frame slidably mounted on the outside of the cross bar and connected to the longitudinal bar, an installation frame arranged on one side of the sliding frame, an adjustment rod slidably inserted into the installation frame, and an adjustment spring arranged between the adjustment rod and the installation frame. The cross bar is provided with a plurality of adjustment sockets along its length direction that are plugged into and cooperate with the adjustment rod.

[0021] By adopting the above technical solution, when the relative position between the horizontal rod and the longitudinal rod needs to be adjusted, the adjustment rod is pulled outward to extend the adjustment rod out of the adjustment hole, so that the adjustment spring is compressed, and then the adjustment rod is aligned with the adjustment hole at the corresponding position as needed.

[0022] Optionally, the lateral positioning seat and the second protruding frame are both provided with external scales at one end close to the knob, and scale lines are provided on the outer side of the mounting rod along its length direction.

[0023] By adopting the above technical solution, the overall adjustment distance of the movable rod is determined according to the external scale; the position where the scale line on the mounting rod is aligned with the end of the sleeve is observed to determine the adjustment distance of the mounting rod, thereby determining the rough adjustment distance and the fine adjustment distance.

[0024] Optionally, a limiting groove is provided on the inner side of the sleeve along its length direction, and a limiting block is provided on the outer side of the mounting rod and is slidably connected to the limiting groove.

[0025] By adopting the above technical solution, the sliding of the installation rod can be limited, so that the installation rod will not rotate under the action of the movable screw rod.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. It can locate multiple different parts of the compressor shell, making the repeated positioning accuracy high, and can accurately fix the compressor shell to ensure that the position of the workpiece is stable during the turning and milling process, and it is not easy to offset, thereby ensuring the processing accuracy. In addition, the compressor shell can be fixed from different directions to meet the processing requirements of complex positioning products, thereby ensuring that the size accuracy and surface quality of the compressor shell meet the requirements; 2. The pressure exerted by the clamping blocks of the two clamping assemblies on the compressor shell can be transmitted to the pressure sensor through the linkage arm. The detection end of the pressure sensor can detect the clamping force in real time to avoid damaging the surface of the compressor shell as much as possible; 3. The transverse spring can give a thrust to the transverse clamping seat, so that when the positioning screw does not need to be rotated, it can limit the positioning screw and make it difficult for the positioning screw to loosen under the vibration generated by subsequent turning and milling, so as to improve the stability of the lateral positioning assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing; Figure 2 It is a top view of the turning and milling compound fixture adapted for the vehicle compressor housing; Figure 3 It is a structural schematic diagram of a compressor housing of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing; Figure 4 It is a structural schematic diagram of a pre-positioning component, a clamping component and a lateral positioning component of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing; Figure 5 It is a structural schematic diagram of a linkage arm and a pressure sensor of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing; Figure 6 It is a structural schematic diagram of a lateral positioning component of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing; Figure 7 It is a structural schematic diagram of a restriction component of a turning and milling composite fixture adapted for a vehicle-mounted compressor housing.

[0028] Description of the accompanying drawings: 1, base; 11, lower positioning block; 12, pressure sensor; 2, pre-positioning assembly; 21, first positioning frame; 211, first convex positioning block; 212, first bottom positioning block; 22, first protruding frame; 221, first side positioning block; 23, second positioning frame; 231, second bottom positioning block; 24, second protruding frame; 241, second side positioning block; 3, clamping assembly; 31, cylinder housing; 32, cylinder piston rod; 321, linkage arm; 33, hinged sheet; 34, clamping block; 4, lateral positioning assembly; 41, lateral positioning seat; 412, external scale; 42, lateral positioning component; 421, movable rod; 4211, sleeve; 4 212, mounting rod; 4213, movable screw; 4214, knob; 4215, abutment groove; 4216, limit groove; 4217, limit block; 4218, scale line; 422, positioning wheel; 423, positioning screw; 43, limiting assembly; 431, connecting seat; 432, cross bar; 4321, adjustment socket; 433, cross abutment seat; 434, cross spring; 435, longitudinal rod; 436, longitudinal abutment seat; 437, adjustment assembly; 4371, sliding frame; 4372, mounting frame; 4373, adjustment plug rod; 4374, adjustment spring; 5, compressor housing; 51, main body; 52, left connecting part; 53, upper connecting part; 54, lower connecting part; 55, left protrusion. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 7 This application is described in further detail.

[0030] The present application discloses a milling and turning composite fixture adapted for a vehicle compressor housing. Figure 1 and Figure 2 The turning and milling composite fixture adapted for the vehicle compressor housing includes a base 1, a lower positioning block 11, a pre-positioning component 2, a clamping component 3 and a lateral positioning component 4. The base 1 is set in a flat cylindrical shape, and the lower positioning block 11 is installed in the middle position of the top surface of the base 1 by screws. The lower positioning block 11 is also set in a flat cylindrical shape, and the lower positioning block 11 can receive and pre-position the compressor housing 5 placed thereon. In this embodiment, the base 1 is used as a basic component. The base 1 is made of high-strength alloy steel to ensure overall rigidity and wear resistance, and the lower positioning block 11 is made of precision cast iron.

[0031] Reference Figure 3In the present application, the compressor shell 5 is cylindrical as a whole, and includes an integrally formed main body 51, a left connecting portion 52, an upper connecting portion 53, a lower connecting portion 54 and a left protruding portion 55. The left connecting portion 52 and the left protruding portion 55 are located on the left side of the main body 51, the upper connecting portion 53 and the lower connecting portion 54 are located on the right side of the main body 51, the left connecting portion 52 is located above the left protruding portion 55, and the upper connecting portion 53 is located above the lower connecting portion 54.

[0032] Reference Figure 1 and Figure 3 The pre-positioning assembly 2 is installed at the peripheral position of the top of the base 1. The pre-positioning assembly 2 is located on the left and right sides of the lower positioning block 11, and the pre-positioning assembly 2 can respectively receive and pre-position the bottom of the left connecting portion 52 and the bottom of the lower connecting portion 54 of the compressor shell 5. The lateral positioning assembly 4 is installed at the top of the base 1, and the lateral positioning assembly 4 can pre-position two parts of the side of the compressor shell 5. The clamping assembly 3 is installed at the peripheral position of the top of the base 1. The position of the clamping assembly 3 corresponds to the position of the pre-positioning assembly 2, and the clamping assembly 3 can respectively clamp the top of the left connecting portion 52 and the top of the upper connecting portion 53 of the compressor shell 5.

[0033] After placing the compressor shell 5 on the lower positioning block 11, the lower positioning block 11 can receive and preliminarily position the compressor shell 5. At the same time, the pre-positioning component 2 receives and pre-positions the bottom of the left connecting part 52 and the bottom of the lower connecting part 54 of the compressor shell 5 respectively, and the lateral positioning component 4 pre-positions the two parts on the side of the compressor shell 5, thereby completing the preliminary positioning of the compressor shell 5 as a whole, and then the clamping component 3 is operated to make the clamping component 3 clamp the top of the left connecting part 52 and the top of the upper connecting part 53 of the compressor shell 5 respectively. Since the clamp can position multiple different parts of the compressor shell 5, the repeated positioning accuracy is high, and the compressor shell 5 can be accurately fixed to ensure that the position of the workpiece is stable during the milling process and is not easy to deviate, thereby ensuring the processing accuracy. In addition, the compressor shell 5 is fixed from different directions to meet the processing requirements of complex positioning products, thereby ensuring that the dimensional accuracy and surface quality of the compressor shell 5 meet the requirements.

[0034] Reference Figure 4 and Figure 5Preferably, the pre-positioning assembly 2 includes a first positioning frame 21, a first protruding frame 22, a second positioning frame 23 and a second protruding frame 24. The first positioning frame 21 and the second positioning frame 23 are both mounted on the top of the base 1 by screws. The first positioning frame 21 and the second positioning frame 23 are respectively located on opposite sides of the lower positioning block 11. The first protruding frame 22 is integrally formed on one side of the top of the first positioning frame 21, and the second protruding frame 24 is integrally formed on one side of the top of the second positioning frame 23. The height of the first positioning frame 21 is higher than that of the second positioning frame 23. A plurality of first convex positioning blocks 211 are mounted on one side of the first positioning frame 21 close to the second positioning frame 23, and the first convex positioning blocks 211 are connected to the first positioning frame 21 by screws. The plurality of first convex positioning blocks 211 can pre-position the left protruding portion 55 of the compressor shell 5. A plurality of first bottom surface positioning blocks 212 are installed on the top of the first positioning frame 21, and the first bottom surface positioning blocks 212 are connected to the first positioning frame 21 by screws, and the plurality of first bottom surface positioning blocks 212 can pre-position the bottom of the left connecting portion 52 of the compressor shell 5. A first side surface positioning block 221 is installed on one side of the first protruding frame 22, and the first side surface positioning block 221 is connected to the first protruding frame 22 by screws, and the first protruding frame 22 can pre-position the end of the left connecting portion 52 of the compressor shell 5.

[0035] A plurality of second bottom surface positioning blocks 231 are installed on the top of the second positioning frame 23, and the second bottom surface positioning blocks 231 are connected to the second positioning frame 23 by screws, and the second bottom surface positioning blocks 231 can pre-position the bottom of the lower connecting portion 54 of the compressor shell 5. Two second side surface positioning blocks 241 are installed on one side of the second protruding frame 24, and the second side surface positioning blocks 241 are connected to the second protruding frame 24 by screws. The two second side surface positioning blocks 241 are arranged up and down, and the two second side surface positioning blocks 241 can pre-position the ends of the upper connecting portion 53 and the lower connecting portion 54 of the compressor shell 5.

[0036] After placing the compressor shell 5 on the lower positioning block 11, multiple first convex positioning blocks 211 can pre-position the left protrusion 55 of the compressor shell 5, multiple first bottom positioning blocks 212 can pre-position the bottom of the left connecting part 52 of the compressor shell 5, the first protruding frame 22 can pre-position the end of the left connecting part 52 of the compressor shell 5, the second bottom positioning block 231 can pre-position the bottom of the lower connecting part 54 of the compressor shell 5, and the two second side positioning blocks 241 can pre-position the end of the upper connecting part 53 and the end of the lower connecting part 54 of the compressor shell 5, so that different parts of the compressor shell 5 can be pre-positioned.

[0037] Reference Figure 4 and Figure 6Furthermore, the lateral positioning assembly 4 includes a lateral positioning seat 41 and a plurality of lateral positioning components 42. The lateral positioning seat 41 is installed on the top of the base 1 by screws. The plurality of lateral positioning components 42 are installed on the lateral positioning seat 41 and the second protruding frame 24. There are two lateral positioning components 42 arranged on the lateral positioning seat 41 and the second protruding frame 24, and the two lateral positioning components 42 located on the lateral positioning seat 41 and the second protruding frame 24 are arranged up and down. The lateral positioning component 42 on the lateral positioning seat 41 and the lateral positioning component 42 on the second protruding frame 24 pre-position different parts of the compressor shell 5 respectively.

[0038] Reference Figure 6 The lateral positioning component 42 includes a movable rod 421, a positioning wheel 422 and a positioning screw 423. The movable rod 421 is slidably penetrated on the lateral positioning seat 41 and the second protruding frame 24. The movable rod 421 is horizontally arranged, and the sliding direction of the movable rod 421 is its own length direction. The positioning wheel 422 is rotatably connected to one end of the movable rod 421 close to the lower positioning block 11. The positioning screw 423 is threadedly penetrated on the lateral positioning seat 41 and the second protruding frame 24. The positioning wheel 422 is used to pre-position the side of the compressor shell 5, and the end of the positioning screw 423 is used to tighten the movable rod 421.

[0039] Since the lateral positioning member 42 is installed on both the lateral positioning seat 41 and the second protruding frame 24, different parts of the compressor housing 5 can be pre-positioned, thereby improving the accuracy of the pre-positioning. In addition, since the end of the positioning screw 423 is used to tighten the movable rod 421, after loosening the positioning screw 423, the movable rod 421 can be adjusted to adjust the position of the positioning wheel 422, and then the positioning screw 423 can be tightened. Therefore, in actual use, the initial positioning accuracy can be roughly adjusted according to actual conditions.

[0040] Reference Figure 4Preferably, there are two groups of clamping assemblies 3, and the positions of the two groups of clamping assemblies 3 correspond to the positions of the first positioning frame 21 and the second positioning frame 23. The clamping assembly 3 includes a cylinder housing 31, a cylinder piston rod 32, a hinged piece 33 and a clamping block 34. Both ends of the cylinder housing 31 are integrally formed with mounting seats, and the mounting seats are connected to the top of the base 1 by screws. The cylinder piston rod 32 is installed in the cylinder housing 31, and the cylinder piston rod 32 can move vertically in the cylinder housing 31. The hinged piece 33 is hinged to the top of the cylinder piston rod 32. The middle part of the clamping block 34 is hinged to the top of the hinged piece 33. One end of the clamping block 34 is hinged to the raised portion at the top of the cylinder housing 31, and the other end of the clamping block 34 is located above the first bottom surface positioning block 212. It should be noted that the clamping blocks 34 of the other clamping assembly 3 are located above the second bottom positioning block 231 , and the clamping blocks 34 of the two clamping assemblies 3 can respectively clamp the top of the left connecting part 52 and the top of the upper connecting part 53 of the compressor shell 5 .

[0041] After placing the compressor housing 5 on the lower positioning block 11 and pre-positioning it through the lateral positioning component 42 and the pre-positioning assembly 2, drive the two cylinder piston rods 32 to move the two cylinder piston rods 32 downward, and because the two ends of the hinged piece 33 are respectively hinged to the clamping block 34 and the cylinder piston rod 32, the other end of the clamping block 34 can be driven to press downward, so that the clamping blocks 34 of the two sets of clamping assemblies 3 can respectively clamp the top of the left connecting part 52 and the top of the upper connecting part 53 of the compressor housing 5. In addition, the contact surface between the clamping block 34 and the compressor housing 5 is covered with an anti-slip rubber pad to ensure firm clamping.

[0042] Reference Figure 5 Furthermore, the cylinder piston rod 32 passes through the base 1, and the cylinder piston rod 32 is slidably connected to the base 1. A linkage arm 321 is installed between the cylinder piston rods 32 of the two sets of clamping assemblies 3. The linkage arm 321 can move vertically in the base 1. A pressure sensor 12 is installed in the base 1. The detection end of the pressure sensor 12 faces the linkage arm 321, and the middle part of the linkage arm 321 contacts the detection end of the pressure sensor 12.

[0043] When the clamping block 34 presses the compressor shell 5, since the force is mutual, the pressure applied to the compressor shell 5 by the clamping blocks 34 of the two sets of clamping assemblies 3 can be transmitted to the pressure sensor 12 through the linkage arm 321. The detection end of the pressure sensor 12 can detect the clamping force in real time to avoid damaging the surface of the compressor shell 5 as much as possible.

[0044] Reference Figure 6 and Figure 7Preferably, the movable rod 421 includes a sleeve 4211, a mounting rod 4212, a movable screw 4213 and a knob 4214. The sleeve 4211 is slidably inserted into the lateral positioning seat 41 and the second protruding frame 24. A tightening groove 4215 is opened on the outer side of the sleeve 4211 along its length direction. The end of the positioning screw 423 cooperates with the tightening groove 4215. The mounting rod 4212 is slidably inserted into one end of the sleeve 4211. The positioning wheel 422 is rotatably connected to one end of the mounting rod 4212. The movable screw 4213 is rotatably connected to the sleeve 4211. One end of the movable screw 4213 is threadedly connected to one end of the mounting rod 4212 away from the positioning wheel 422. The knob 4214 is fixed to one end of the movable screw 4213 away from the mounting rod 4212.

[0045] Since a tightening groove 4215 is provided on the outside of the sleeve 4211, and the end of the positioning screw 423 cooperates with the tightening groove 4215, the positioning screw 423 can position the sleeve 4211 to a certain extent in the circumferential direction, so that the sleeve 4211 is not easy to rotate, and the axle of the positioning wheel 422 is ensured not to deviate. By turning the knob 4214, since the movable screw 4213 is threadedly connected with the mounting rod 4212, the mounting rod 4212 can be driven to slide in the sleeve 4211 to adjust the position of the positioning wheel 422. It should be noted that the method of adjusting the position of the positioning wheel 422 by the positioning screw 423 is a rough adjustment, and the method of adjusting the position of the positioning wheel 422 by the knob 4214 is a fine adjustment.

[0046] In addition, a limiting groove 4216 is provided on the inner side of the sleeve 4211 along its length direction, and a limiting block 4217 is fixed on the outer side of the mounting rod 4212, and the limiting block 4217 is slidably connected with the limiting groove 4216. The setting of the limiting block 4217 and the limiting groove 4216 can limit the sliding of the mounting rod 4212, so that the mounting rod 4212 will not rotate under the action of the movable screw 4213.

[0047] Furthermore, a limiting assembly 43 is installed on the lateral positioning seat 41 and the second protruding frame 24, and the limiting assembly 43 is used to limit the rotation of the head of the positioning screw 423 and the knob 4214. The limiting assembly 43 includes a connecting seat 431, a cross bar 432, a cross tight seat 433, a cross spring 434, a longitudinal rod 435 and a longitudinal tight seat 436. The connecting seat 431 is fixed on the lateral positioning seat 41 and the second protruding frame 24 and is close to the head of the positioning screw 423. The cross bar 432 is slidably arranged on the connecting seat 431. The length direction of the cross bar 432 is parallel to the length direction of the sleeve 4211. The cross tight seat 433 is fixed to one end of the cross bar 432 close to the head of the positioning screw 423. The cross tight seat 433 is The arc-shaped arrangement and the transverse abutment seat 433 can be tightly matched with the head of the positioning screw 423, the transverse spring 434 is sleeved on the outside of the transverse rod 432, and the transverse spring 434 is located between the transverse abutment seat 433 and the connecting seat 431, an adjustment assembly 437 is installed between the transverse rod 432 and the longitudinal rod 435, and the relative position between the transverse rod 432 and the longitudinal rod 435 is adjusted by the adjustment assembly 437, and the longitudinal abutment seat 436 is fixed to the end of the longitudinal rod 435 away from the transverse rod 432, and the longitudinal abutment seat 436 can be tightly matched with the knob 4214. In this embodiment, the longitudinal abutment seat 436 is made of rubber material and has a certain elasticity.

[0048] Since the transverse spring 434 is always in a compressed state, the transverse spring 434 can give a thrust to the transverse tightening seat 433, so that when there is no need to rotate the positioning screw 423, it can limit the positioning screw 423, making it difficult for the positioning screw 423 to loosen under the vibration generated by subsequent turning and milling, so as to improve the stability of the lateral positioning assembly 4. In addition, since the longitudinal tightening seat 436 is elastic and the relative position between the transverse rod 432 and the longitudinal rod 435 can be adjusted by the adjustment assembly 437, the longitudinal tightening seat 436 can be adjusted to a state of being tightened against the end of the knob 4214. At the same time, the transverse tightening seat 433 can tighten the end of the positioning screw 423, making it difficult for the knob 4214 to rotate under the vibration generated by subsequent turning and milling. When it is necessary to rotate the positioning screw 423, the position of the cross bar 432 is adjusted backward so that the cross tight seat 433 does not contact the positioning screw 423, and the longitudinal tight seat 436 is pressed against the knob 4214; when it is necessary to rotate the knob 4214, the relative position between the cross bar 432 and the longitudinal bar 435 is adjusted so that the cross tight seat 433 contacts the positioning screw 423, and the longitudinal tight seat 436 does not contact the knob 4214.

[0049] Preferably, the adjustment assembly 437 includes a sliding frame 4371, a mounting frame 4372, an adjustment rod 4373 and an adjustment spring 4374. The sliding frame 4371 is slidably sleeved on the outside of the cross bar 432. The cross bars 432 and the sliding frame 4371 are both square in cross section. The outside of the sliding frame 4371 is fixedly connected to one end of the longitudinal bar 435. The mounting frame 4372 is fixed to the side of the sliding frame 4371 away from the longitudinal bar 435. The interior of the sliding frame 4371 is connected to the interior of the mounting frame 4372. The adjustment rod 4373 is adjusted to the spring 4374. The adjusting rod 4373 is slidably inserted into the installation frame 4372, the length direction of the adjusting rod 4373 is parallel to the length direction of the longitudinal rod 435, the adjusting spring 4374 is sleeved on the outside of the adjusting rod 4373, and the two ends of the adjusting spring 4374 are respectively connected to the adjusting rod 4373 and the inner wall of the installation frame 4372, a plurality of adjusting holes 4321 are opened on the outside of the cross bar 432, the plurality of adjusting holes 4321 are arranged along the length direction of the cross bar 432, and the adjusting rod 4373 is plugged and matched with the adjusting holes 4321.

[0050] When it is necessary to adjust the relative position between the cross bar 432 and the longitudinal bar 435, pull the adjustment rod 4373 outward so that the adjustment rod 4373 extends out of the adjustment socket 4321, so that the adjustment spring 4374 is compressed, and then align the adjustment rod 4373 with the adjustment socket 4321 at the corresponding position as needed, so that the adjustment rod 4373 is inserted into the adjustment socket 4321 under the elastic force of the adjustment spring 4374 to complete the relative position adjustment between the cross bar 432 and the longitudinal bar 435.

[0051] Furthermore, an external scale 412 is fixed to the lateral positioning seat 41 and the end of the second protruding frame 24 close to the knob 4214. The length direction of the external scale 412 is parallel to the length direction of the sleeve 4211. Scale lines 4218 are arranged on the outer side of the mounting rod 4212 along its length direction, and the minimum scale on the external scale 412 is larger than the minimum scale on the scale lines 4218.

[0052] After adjusting the position of the sleeve 4211, the end position of the sleeve 4211 away from one end of the mounting rod 4212 can be observed, and the overall adjustment distance of the movable rod 421 can be determined based on the external scale 412; after adjusting the position of the mounting rod 4212, the position where the scale line 4218 on the mounting rod 4212 is aligned with the end of the sleeve 4211 can be observed to determine the adjustment distance of the mounting rod 4212, thereby determining the rough adjustment distance and the fine adjustment distance.

[0053] The implementation principle of a turning and milling composite fixture adapted to a vehicle-mounted compressor shell in an embodiment of the present application is as follows: after the compressor shell 5 is placed on the lower positioning block 11, the lower positioning block 11 can receive and preliminarily position the compressor shell 5. At the same time, the pre-positioning component 2 respectively receives and pre-positions the bottom of the left connecting part 52 and the bottom of the lower connecting part 54 of the compressor shell 5, and the lateral positioning component 4 pre-positions two parts of the side of the compressor shell 5, thereby completing the preliminary positioning of the compressor shell 5 as a whole, and then the clamping component 3 is operated to make the clamping component 3 clamp the top of the left connecting part 52 and the top of the upper connecting part 53 of the compressor shell 5 respectively.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A turning and milling composite fixture adapted for a vehicle-mounted compressor housing, characterized in that: include: A base (1), serving as a basic component; A lower positioning block (11) is arranged on the base (1) and receives and pre-positions the bottom of the compressor housing (5); A pre-positioning component (2) is arranged on the base (1) and located on both sides of the lower positioning block (11), and the pre-positioning component (2) respectively receives and pre-positions the bottom of the left connecting part (52) and the bottom of the lower connecting part (54) of the compressor housing (5); A pressing assembly (3) is arranged on the base (1) and corresponds to the position of the pre-positioning assembly (2), and the pressing assembly (3) presses the top of the left connecting part (52) and the top of the upper connecting part (53) of the compressor shell (5) respectively; The lateral positioning assembly (4) is arranged on the base (1) and pre-positions at least two locations on the side of the compressor casing (5).

2. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 1 is characterized in that: The pre-positioning assembly (2) comprises a first positioning frame (21) arranged on the base (1), a first protruding frame (22) arranged on one side of the top of the first positioning frame (21), a second positioning frame (23) arranged on the base (1), and a second protruding frame (24) arranged on one side of the top of the second positioning frame (23), wherein the first positioning frame (21) and the second positioning frame (23) are respectively located on two opposite sides of the lower positioning block (11), a first bottom surface positioning block (212) for pre-positioning the bottom of the left connecting portion (52) of the compressor shell (5) is arranged on the top of the first positioning frame (21), and the first positioning frame ( A first convex surface positioning block (211) is provided on the side of the compressor housing (5) for pre-positioning the left protruding portion (55), a first side surface positioning block (221) is provided on one side of the first protruding frame (22) for pre-positioning the end of the left connecting portion (52) of the compressor housing (5), a second bottom surface positioning block (231) is provided on the top of the second positioning frame (23) for pre-positioning the bottom of the lower connecting portion (54) of the compressor housing (5), and a second side surface positioning block (241) is provided on one side of the second protruding frame (24) for pre-positioning the ends of the upper connecting portion (53) and the lower connecting portion (54) of the compressor housing (5).

3. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 2 is characterized in that: The clamping assembly (3) is provided in two groups, and the clamping assembly (3) comprises a cylinder housing (31) provided on the base (1), a cylinder piston rod (32) penetrating both ends of the cylinder housing (31), a hinged plate (33) hinged to the top of the cylinder piston rod (32), and a clamping block (34) hinged to the top of the cylinder housing (31) and the top of the hinged plate (33) at both ends, respectively. The clamping blocks (34) of the two groups of clamping assemblies (3) respectively clamp the top of the left connecting part (52) and the top of the upper connecting part (53) of the compressor shell (5).

4. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 3 is characterized in that: The cylinder piston rod (32) is slidably connected to the base (1); a linkage arm (321) is provided between the cylinder piston rods (32) of the two groups of the clamping assemblies (3); a pressure sensor (12) is provided in the base (1); and the middle part of the linkage arm (321) contacts the detection end of the pressure sensor (12).

5. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 2 is characterized in that: The lateral positioning assembly (4) comprises a lateral positioning seat (41) arranged on the base (1), a plurality of lateral positioning components (42) arranged on the lateral positioning seat (41) and on the second protruding frame (24); the lateral positioning components (42) on the lateral positioning seat (41) and the lateral positioning components (42) on the second protruding frame (24) respectively pre-position different parts of the compressor shell (5); the lateral positioning components (42) comprise a movable rod (421) slidably penetrated on the lateral positioning seat (41) and the second protruding frame (24), a positioning wheel (422) rotatably disposed at one end of the movable rod (421), and a positioning screw (423) threadedly penetrated on the lateral positioning seat (41) and the second protruding frame (24); the positioning wheel (422) pre-positions the side surface of the compressor shell (5); and the end of the positioning screw (423) is used to press against the movable rod (421).

6. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 5 is characterized in that: The movable rod (421) comprises a sleeve (4211) slidably inserted into the lateral positioning seat (41) and the second protruding frame (24), a mounting rod (4212) slidably inserted into one end of the sleeve (4211), a movable screw (4213) rotatably connected to the sleeve (4211), and a knob (4214) arranged at one end of the movable screw (4213), the sleeve (4211) is provided with a tightening groove (4215) along its length direction on the outer side, the end of the positioning screw (423) cooperates with the tightening groove (4215), the positioning wheel (422) is rotatably arranged on the mounting rod (4212), and the movable screw (4213) is threadedly connected to the mounting rod (4212).

7. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 6 is characterized in that: The lateral positioning seat (41) and the second protruding frame (24) are both provided with a limiting assembly (43) for limiting the rotation of the head of the positioning screw (423) and the knob (4214), the limiting assembly (43) comprising a connecting seat (431) provided on the lateral positioning seat (41) and the second protruding frame (24), a cross bar (432) slidably inserted through the connecting seat (431), and a locking member (432) provided at one end of the cross bar (432) and tightly fitted with the head of the positioning screw (423). A transverse abutment seat (433), a transverse spring (434) arranged between the transverse abutment seat (433) and the connecting seat (431), a longitudinal rod (435) arranged on the transverse rod (432) via an adjustment component (437), and a longitudinal abutment seat (436) arranged at one end of the longitudinal rod (435) and abutting against the knob (4214), wherein the relative position between the transverse rod (432) and the longitudinal rod (435) is adjusted via the adjustment component (437), and the longitudinal abutment seat (436) is elastic.

8. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 7 is characterized in that: The adjustment assembly (437) includes a sliding frame (4371) slidably mounted on the outside of the cross bar (432) and connected to the longitudinal bar (435), a mounting frame (4372) arranged on one side of the sliding frame (4371), an adjustment rod (4373) slidably inserted through the mounting frame (4372), and an adjustment spring (4374) arranged between the adjustment rod (4373) and the mounting frame (4372); the cross bar (432) is provided with a plurality of adjustment sockets (4321) arranged along its length direction and plugged into and matched with the adjustment rod (4373).

9. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 6, characterized in that: The lateral positioning seat (41) and the second protruding frame (24) are both provided with an external scale (412) at one end close to the knob (4214), and the outer side of the mounting rod (4212) is provided with scale lines (4218) along its length direction.

10. The turning and milling composite fixture adapted to the vehicle compressor housing according to claim 6, characterized in that: A limiting groove (4216) is provided on the inner side of the sleeve (4211) along its length direction, and a limiting block (4217) is provided on the outer side of the mounting rod (4212) and is slidably connected to the limiting groove (4216).

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