Shell rocking chair surface processing system and processing method thereof

Abstract

The present invention relates to the field of mechanical processing technology, and provides a shell rocking chair surface processing system and a processing method thereof; the shell rocking chair surface processing system includes: a clamping mechanism, a high-precision probe, a rough boring angle head and a fine boring angle head; the clamping mechanism includes: a fixture base plate, a first support frame and a second support frame; the first support frame and the second support frame are arranged in parallel on the fixture base plate; the first support frame and the second support frame are U-shaped; the high-precision probe, the rough boring angle head and the fine boring angle head are respectively used to be installed on the spindle of a horizontal machining center. The present invention clamps the shell horizontally, determines the center of the shell by a high-precision probe, performs rough boring processing by a rough boring angle head, and performs fine boring processing by a fine boring angle head, so as to improve the processing efficiency and yield rate of the rocking chair surface of the shell.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a shell rocking chair surface processing system and a processing method thereof. Background Art

[0002] The plunger hydraulic pump is a hydraulic pump that relies on the reciprocating motion of the plunger in the cylinder to cause the change of the sealed volume to achieve oil suction and oil pressure. Two rocking seats are set inside the housing of the plunger hydraulic pump. The reciprocating motion of the plunger is achieved by the swing of the rocking seats. Therefore, the rocking seats are the key to the plunger hydraulic pump. Figure 1-2 As shown, one end of the housing 1 of the plunger hydraulic pump is open, the open end of the housing 1 is the large end, and the other end opposite to it is the small end; the housing 1 has an inner cavity, and the interior of the housing 1 has an upper side surface, a lower side surface, a left side surface, a right side surface and a rear side surface; an upper rocking seat surface 101 and a lower rocking seat surface 102 are arranged on the rear side surface (small end) of the housing 1; the outside of the housing 1 of the plunger hydraulic pump has a boss 103 and a rough surface 104 on the inner side of the ear.

[0003] The rocking chair surface of the plunger hydraulic pump housing not only has high requirements for dimensional accuracy and form and position tolerances, but is also a small semicircle, which makes processing and inspection very difficult. In addition, in order to reduce space occupancy, the overall dimensions of the plunger hydraulic pump are constantly shrinking, which results in a small internal space in its housing, while the rocking chair surface arranged inside it appears to be very large. The processing of the rocking chair surface is even more difficult for mechanical processing manufacturers.

[0004] The traditional processing method is to process on a special machine, and a special power head with a special tool is required. The power head extends into the shell, and the special machine provides power to the power head, which is driven by the mechanical shafts to process the rocking chair surface. Although this processing method can meet the processing requirements of the rocking chair surface, the cost is too high because the equipment, power head, and tool used are all specially customized. This processing method is not universal and extensive at all.

[0005] In addition, the positioning surfaces of the plunger hydraulic pump housing products in the fixture are all cast blank surfaces. There are positioning surfaces not only on the periphery, but also in the inner cavity. The deviation of the size of these positioning surfaces is relatively large. This is a characteristic of the casting process and cannot be avoided. In addition, the inner cavity of the housing product is small. When processing the rocking chair surface in the inner cavity, it may cause the position size requirements of the rocking chair surface and the inner cavity blank positioning surface to exceed the tolerance, resulting in scrap. It may also cause the angle head to collide with the inner cavity of the housing product and cause a production accident. If the inner cavity is positioned by a fixture, it will inevitably be blocked and the angle head will not be able to enter the inner cavity to process the rocking chair surface. Therefore, the current processing and positioning of the rocking chair surface is difficult, and processing is difficult, which is easy to cause scrap and low production efficiency. Summary of the invention

[0006] The present invention mainly solves the current technical problems of difficult positioning and processing of rocking chair surfaces, easy waste, and low production efficiency. A shell rocking chair surface processing system and a processing method thereof are proposed. The shell is clamped horizontally, the center of the shell is determined by a high-precision probe, rough boring is performed by a rough boring angle head, and fine boring is performed by a fine boring angle head, so as to improve the processing efficiency and yield rate of the rocking chair surface of the shell.

[0007] The present invention provides a shell rocking chair surface processing system, comprising: a clamping mechanism, a high-precision probe, a rough boring angle head and a fine boring angle head;

[0008] The clamping mechanism comprises: a clamp bottom plate, a first support frame and a second support frame;

[0009] The first support frame and the second support frame are arranged in parallel on the fixture bottom plate;

[0010] The first support frame and the second support frame are U-shaped; the first support frame comprises a first leg, a first base and a second leg connected in one piece, the first leg being lower than the second leg; the second support frame comprises a third leg, a second base and a fourth leg connected in one piece;

[0011] The second leg is detachably provided with a first pressing block;

[0012] The second pressing block is detachably provided on the third leg, the second pressing block extends toward the first leg, the fourth pressing block is detachably provided on the second pressing block; the third pressing block is detachably provided on the fourth leg;

[0013] A plurality of positioning columns are respectively arranged on the first base and the second base;

[0014] A clamping plate is provided on the inner side surface of the first base; an axial positioning seat is provided on the inner side surface of the second base; and an adjustable positioning pin is provided on the axial positioning seat;

[0015] The high-precision measuring head, the rough boring angle head and the fine boring angle head are respectively used for being installed on the main shaft of a horizontal machining center.

[0016] Preferably, the fixture base plate is fixed on a rotatable workbench.

[0017] Preferably, a fourth pressing block is arranged on the second pressing block via a connecting seat.

[0018] Preferably, two fixed positioning columns are arranged on the first base, and one fixed positioning column and one adjustable supporting nail are arranged on the second base.

[0019] Preferably, a first laterally adjustable positioning column is provided on the first leg; a first clamping screw is provided on the second leg; a second laterally adjustable positioning column and a second clamping screw are provided on the third leg; and a third clamping screw and a fourth clamping screw are provided on the fourth leg.

[0020] Preferably, it also includes: a detection mechanism;

[0021] The detection mechanism comprises: a special calibration block, a swing block, a fixed plate and a pointer meter;

[0022] The dedicated calibration block is provided with two calibration rocking chair surfaces, which correspond to the upper rocking chair surface and the lower rocking chair surface of the shell;

[0023] Two contact points are arranged on each side of the swing block, and the contact points correspond to the calibration rocking chair surface respectively;

[0024] A fixed plate is arranged on the swing block, and two pointer gauges are arranged on the fixed plate respectively; the measuring needles of the pointer gauges pass through the fixed plate and the swing block.

[0025] Preferably, rough boring tool heads are respectively arranged on both sides of the end of the rough boring angle head;

[0026] Precision boring tool heads are respectively arranged on both sides of the end of the precision boring angle head.

[0027] Correspondingly, the present invention further provides a processing method of the shell rocking chair surface processing system provided by any embodiment of the present invention, comprising the following process:

[0028] Step 1, clamping the shell onto a clamping mechanism of a shell rocking chair surface processing system;

[0029] Step 2: Use a high-precision probe to determine the center of the shell:

[0030] The high-precision probe is installed on the spindle of the horizontal machining center, and the high-precision probe is moved into the inner cavity of the shell. The high-precision probe contacts and detects the upper side surface, the lower side surface, the left side surface, and the right side surface respectively to determine the center coordinates of the shell;

[0031] Step 3: Use the rough boring angle head to perform rough boring on the upper and lower rocking chair surfaces:

[0032] The rough boring angle head is installed on the spindle, and the rough boring angle head is moved into the inner cavity of the shell, and then the rough boring angle head is moved to the center coordinate of the shell, and the rough boring processing of the upper rocking chair surface is performed by feeding upward, and the rough boring processing of the lower rocking chair surface is performed by feeding downward. After the rough boring processing of the upper rocking chair surface and the lower rocking chair surface is completed, the rough boring angle head is installed in the tool magazine of the horizontal machining center;

[0033] Step 4: Use the precision boring angle head to perform precision boring on the upper and lower rocking chair surfaces:

[0034] Install the precision boring angle head on the spindle, move the precision boring angle head into the inner cavity of the shell, and then move the precision boring angle head to the center coordinate of the shell, feed upward to perform precision boring processing on the upper rocking chair surface, and feed downward to perform precision boring processing on the lower rocking chair surface. After the precision boring processing of the upper and lower rocking chair surfaces is completed, install the precision boring angle head into the tool magazine of the horizontal machining center.

[0035] Preferably, after step 4, the method further comprises:

[0036] Step 5: Use a high-precision probe to inspect the upper and lower rocking chair surfaces:

[0037] Install the high-precision probe onto the spindle again, move the high-precision probe to the upper rocking chair surface of the shell cavity, and inspect the upper rocking chair surface; move the high-precision probe to the lower rocking chair surface of the shell cavity, and inspect the lower rocking chair surface; if both the upper rocking chair surface and the lower rocking chair surface are qualified, the fine machining of the shell rocking chair surface is completed; if the upper rocking chair surface and / or the lower rocking chair surface are unqualified, call out the fine boring angle head again, fine-tune the fine boring head on the fine boring angle head according to the compensation value, and then perform fine boring again until the machining is qualified.

[0038] Preferably, after step 5, the method further comprises:

[0039] Step 6: Use a detection mechanism to manually re-inspect the upper rocking seat surface and the lower rocking seat surface of the shell.

[0040] The shell rocking chair surface processing system and processing method provided by the present invention have the following advantages compared with the prior art:

[0041] 1. The present invention places the shell horizontally on the clamping mechanism, and the rocking chair surface can face the main shaft, thereby realizing the processing of the rocking chair surface. In order to place the shell horizontally, a frame-type clamping mechanism is adopted, and the shell is positioned and clamped inside the frame. After clamping, the shell has a very high strength as a whole, which provides a guarantee for the stable processing of the shell. The clamping mechanism uses a rotatable pressure plate for clamping, and the shell is loaded and unloaded from the top, which is very convenient. In addition, a clamping pressure plate is arranged at the lower part of the clamping mechanism, and the clamping pressure plate is axially clamped, which provides sufficient clamping force in the axial direction for the processing of the rocking chair surface, ensuring the stable processing and efficient processing of the rocking chair surface. In addition, through horizontal placement, the processing of other key parts of the shell except the rocking chair surface can also be realized. The shells processed by the present invention are all high-precision products.

[0042] 2. The high-precision probe used in the present invention can penetrate into the inner cavity of the shell. It will perform contact detection with the sides of the inner cavity of the shell, and automatically transmit the signal to the CNC system of the horizontal machining center. The CNC system automatically processes and then accurately determines the center coordinates of the shell. After clamping each shell, a high-precision probe is used to accurately obtain the center coordinates of the shell. This process is completed quickly and automatically, and is also very suitable for batch processing.

[0043] 3. In terms of detection, the present invention uses a high-precision probe for line detection and a detection mechanism for manual re-inspection; during the processing, a high-precision probe is used for online detection. When the size is found to be unqualified, the two fine boring heads are fine-tuned respectively, and the rocking chair surface is re-finished. After the shell is processed and removed, the size value of the rocking chair surface may still change due to changes in its internal stress and other reasons. In order to be able to promptly determine whether the changed size value is qualified, a detection mechanism is provided for re-inspection and confirmation. By adopting the above double detection, not only can the yield rate of the shell product be greatly improved, but also no unqualified products can be discharged.

[0044] 4. Through the application of the present invention, the processing of the rocking chair surface can be realized on a general horizontal machining center. Compared with the traditional processing method, it has many advantages such as low investment cost, flexible and clever method, high yield rate, high processing precision, saving process, etc., and has very high competitiveness. The present invention has universality and extensiveness, and can be applied to the processing of most rocking chair surfaces. It can be widely used and is suitable for the processing of most shell rocking chair surfaces. It can fundamentally solve the problem of rocking chair surface processing. This clamp has many advantages such as high strength, low comprehensive cost, sufficient positioning, reasonable and clever clamping, convenience and practicality.

[0045] 5. The present invention includes a clamping mechanism, a high-precision probe, a rough boring angle head, a fine boring angle head and a detection mechanism, and has the advantages of automatic and accurate centering, online detection and timely compensation processing, convenient and accurate detection and confirmation, etc. A high-precision probe is used to achieve automatic and accurate centering. Its accuracy reaches within microns, and it has functions such as wireless transmission, working distance up to 15m, deep cavity detection, and can match powerful measurement software that can be installed in the CNC system. The taper handle of the high-precision probe is connected to the spindle of the horizontal machining center with high-precision positioning, and is completely and tightly fitted with the taper hole of the spindle, so that the axis of the probe is completely collinear with the axis of the spindle of the horizontal machining center, which provides a guarantee for subsequent accurate detection. The probe of the high-precision probe can penetrate into the inner cavity of the shell, and it will perform contact detection with the sides of the inner cavity of the shell, and automatically transmit the signal to the CNC system of the horizontal machining center. Through the automatic processing of the CNC system, the center coordinates of the shell are accurately determined. The whole process is completed automatically, without manual operation, and is accurate and fast. The use of this process method not only effectively solves the problem of large size variations on the blank positioning surface, but also greatly improves processing efficiency and has an extremely high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 The structure of the casing of the plunger hydraulic pump to be processed in the present invention is shown in FIG. Figure 1 ;

[0047] Figure 2 The structure of the casing of the plunger hydraulic pump to be processed in the present invention is shown in FIG. Figure 2 ;

[0048] Figure 3 is a schematic diagram of a shell rocking chair surface processing system provided by the present invention;

[0049] Figure 4 The structure diagram of the clamping mechanism provided by the present invention is Figure 1 ;

[0050] Figure 5 The structure diagram of the clamping mechanism provided by the present invention is Figure 2 ;

[0051] Figure 6 It is a schematic diagram of the clamping state of the clamping mechanism provided by the present invention;

[0052] Figure 7 It is a structural schematic diagram of the high-precision measuring head provided by the present invention;

[0053] Figure 8 It is a structural schematic diagram of the rough boring angle head provided by the present invention;

[0054] Fig. 9 It is a structural schematic diagram of the precision boring angle head provided by the present invention;

[0055] Fig.10 It is a schematic diagram of the installation of the precision boring angle head provided by the present invention;

[0056] Fig.11 yes Fig.10 Sectional view along AA direction;

[0057] Fig.12 It is a structural schematic diagram of the detection mechanism provided by the present invention;

[0058] Fig.13 It is a structural schematic diagram of the swing block, the fixed plate and the pointer meter provided by the present invention;

[0059] Fig.14 It is a structural schematic diagram of the special calibration block provided by the present invention;

[0060] Fig.15 It is a schematic diagram of the working state of the detection mechanism provided by the present invention.

[0061] Figure numerals: 1, shell; 2, clamping mechanism; 3, high-precision probe; 4, rough boring angle head; 5, fine boring angle head; 6, detection mechanism; 7, workbench; 101, upper rocking chair surface; 102, lower rocking chair surface; 103, boss; 104, inner side blank surface of ear; 201, fixture bottom plate; 202, first support frame; 203, second support frame; 204, first pressure block; 205, second pressure block; 206, third pressure block; 207, fourth pressure block; 208, connecting seat; 209, clamping plate; 210, fixed positioning column; 211, adjustable support nail; 212, axial positioning Seat; 213, first lateral adjustable positioning column; 214, second lateral adjustable positioning column; 215, first clamping screw; 216, second clamping screw; 217, third clamping screw; 218, fourth clamping screw; 219, clamping screw; 220, pad; 401, rough boring head; 501, fine boring head; 502, fine boring tool body; 503, fine boring blade; 504, fine adjustment block; 505, locking screw; 506, adjustment screw; 601, special calibration block; 602, swing block; 603, fixed plate; 604, pointer meter; 605, contact; 606, calibration rocking chair surface. DETAILED DESCRIPTION

[0062] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all the contents. Embodiment 1

[0063] like Figure 3 As shown, a shell rocking chair surface processing system provided by an embodiment of the present invention includes: a clamping mechanism 2, a high-precision probe 3, a rough boring angle head 4 and a fine boring angle head 5.

[0064] like Figure 4-6 As shown, the clamping mechanism 2 comprises: a clamp base plate 201, a first support frame 202 and a second support frame 203; the clamp base plate 201 is fixed on a rotatable workbench 7, and the clamp base plate 201 is positioned and clamped with the workbench 7. The workbench 7 can drive the clamping mechanism 2 to rotate a certain angle, so as to adapt to different working conditions.

[0065] The first support frame 202 and the second support frame 203 are arranged in parallel on the fixture bottom plate 201 .

[0066] The first support frame 202 and the second support frame 203 are U-shaped; the first support frame 202 has a first leg, a first base and a second leg connected in one piece, and the first leg is lower than the second leg; the second support frame 203 has a third leg, a second base and a fourth leg connected in one piece.

[0067] The second leg is provided with a first pressing block 204 detachably; the third leg is provided with a second pressing block 205 detachably, the second pressing block 205 extends toward the first leg, the second pressing block 205 is provided with a fourth pressing block 207 detachably; the fourth leg is provided with a third pressing block 206 detachably. Specifically, the fourth pressing block 207 is provided on the second pressing block 205 via a connecting seat 208.

[0068] The first support frame 202 and the second support frame 203, which adopt a high-strength frame type, are the main body of the clamping mechanism. The first support frame 202 and the second support frame 203 adopt a U-shaped design, and four pressure blocks are set at their tops. The four pressure blocks can be detachably set to achieve multi-point clamping. They are all set at the top of the support frame and can rotate. Before clamping, when the shell 1 is loaded or removed from the clamping mechanism, the axis of the first pressure block 204, the second pressure block 205, the third pressure block 206 and the fourth pressure block 207 are parallel to the axis of the shell placement state. The pressure blocks do not block the placement position of the shell 1, which facilitates the loading or removal of the shell 1 from the top of the clamping mechanism. After the shell 1 is placed, the first pressure block 204, the second pressure block 205, the third pressure block 206 and the fourth pressure block 207 are rotated until their axes are perpendicular to the axis of the shell placement state, and each pressure block corresponds to each support point below (fixed positioning column 210 and adjustable support nail 211), so that the shell 1 can be clamped. The surface of each pressing block is set as a tooth surface. Since the blank surface of the shell 1 is convex and concave and rough, a greater clamping force will be applied when the tooth surface contacts and clamps it. In particular, it can avoid the risk of sliding due to large cutting force during processing of the rocking chair surface, and has a very good clamping effect.

[0069] A gap is set at one end of the first support frame 202 (the first leg is lower than the second leg), which realizes the processing of the side oblique hole except the rocking chair surface, and saves a process of shell processing, which greatly reduces the processing cost of the shell product. Since a gap is set at one end of the first support frame 202, a pressure plate cannot be set on it. For this reason, the second pressure block 205 adopts an L-shaped pressure plate, whose support point is set on the third leg and can rotate around the support point, which realizes the clamping of the lower left part of the shell 1. Since the top of the third leg is occupied by the L-shaped second pressure block 205, a connecting seat 208 is set, and its lower part is connected and fixed to the third leg by a hexagon socket screw, and a fourth pressure block 207 for clamping the upper left part of the shell 1 is set on its upper part. Through the above ingenious design, the loading and unloading of the shell product is convenient, the clamping is effective, and the processing of the side oblique hole is not blocked, which is a very good clamping solution.

[0070] A plurality of positioning columns are respectively provided on the first base and the second base; specifically, two fixed positioning columns 210 are provided on the first base, and one fixed positioning column 210 and an adjustable support pin 211 are provided on the second base. A first lateral adjustable positioning column 213 is provided on the first leg; a first clamping screw 215 is provided on the second leg; a second lateral adjustable positioning column 214 and a second clamping screw 216 are provided on the third leg; and a third clamping screw 217 and a fourth clamping screw 218 are provided on the fourth leg.

[0071] A clamping plate 209 is disposed on the inner side surface of the first base; an axial positioning seat 212 is disposed on the inner side surface of the second base; and an adjustable positioning pin is disposed on the axial positioning seat 212.

[0072] The clamping mechanism of the present invention adopts multi-point positioning, and is provided with a plurality of fixed positioning columns 210 and an adjustable support nail 211. One side of the shell 1 contacts with the three fixed positioning columns 210 and completes horizontal positioning. The adjustable support nail 211 is adjusted to contact with the side. After contact, they can provide reliable support force, which is convenient for subsequent clamping. In addition, a first lateral adjustable positioning column 213 and a second lateral adjustable positioning column 214 are provided to perform lateral positioning of the shell 1. Since the variation of the casting blank surface of the shell 1 is relatively large, an adjustable positioning column is adopted. An axial positioning seat 212 is provided at the lower part of the second support frame 203, and an adjustable positioning nail is provided thereon, which contacts with the inner blank surface 104 of the ear of the small end of the shell 1 and realizes axial positioning. Through the setting of the above positioning points, the shell 1 can be reliably positioned in the clamping mechanism and has good consistency, which provides a guarantee for the correct processing of the rocking chair surface.

[0073] When the axial feed is applied to the processing of the rocking chair surface, a large cutting force will be generated, which will cause the shell 1 to move. Therefore, it is necessary to set a clamp in the opposite direction to prevent the product from moving, and it is necessary to clamp the boss 103 on the outer periphery of the shell. Therefore, a clamping plate 209 is set on the bottom surface of the lower part of the first support frame 202, and a special clamping screw 219 is set. It passes through the clamping plate 209 and is screwed on the first support frame 202. When the clamping screw 219 is tightened, its large end contacts and pushes the clamping plate 209 to clamp the shell product. When the clamping screw 219 is loosened, the nut on the inner side will push the clamping plate 209 to loosen the shell product (there is a screw thread between the nut and the clamping plate 209). The nut and the clamping screw 219 are connected by a cotter pin. When the clamping plate 209 presses the shell, it does not work, but when it is loosened, the clamping screw 219 rotates, driving the nut to rotate and loosen the clamping plate 209. The small end of the clamping screw 219 is provided with an inner hexagonal hole, and the clamping screw 219 can be rotated by an inner hexagonal wrench outside the clamping mechanism, which is very convenient. After being installed in the shell 1, the clamping plate 209 can be conveniently clamped and loosened.

[0074] The clamping mechanism of the present invention is positioned and fastened by means of a positioning column, an adjustable support pin, a clamping screw and a clamping screw 219. The clamping mechanism of the present invention is provided with a pad 220 between the clamp base plate 201 and the first support frame 202 and the second support frame 203. Such a design reduces the gap between the housing 1 and the clamp base plate 201. When the housing 1 is loaded into the clamping mechanism and positioned and clamped, a frame-type structure is formed as a whole, which has high strength. The design of the clamping mechanism of the present invention is very ingenious, making the clamping mechanism not only compact in structure, but also convenient and practical.

[0075] When the clamping mechanism of the present invention is used, first, confirm that the four pressure plates located at the top are parallel to the axis of the shell 1 in the placed state, and the internal clamping pressure plate 209 is in the loose position to avoid interference when the shell 1 is installed. After that, the small end of the shell 1 is facing the inside, and one side of the boss 103 of the shell 1 is facing the bottom, and the shell 1 is hung above the clamping mechanism, and the shell 1 is slowly lowered into the inside of the clamping mechanism. The lower side surface of the shell 1 corresponds to the three fixed positioning columns 210, the inner side blank surface 104 of the ear of the small end corresponds to the adjustable positioning pin of the axial positioning seat 212, and the left side surface corresponds to the first lateral adjustable positioning column 213 and the second lateral adjustable positioning column 214, and the shell 1 is continuously installed until all the positioning surfaces are in contact. Rotate and pre-clamp the first pressing block 204, the second pressing block 205, and the third pressing block 206, pre-tighten the first clamping screw 215 and the fourth clamping screw 218, and pre-clamp the internal clamping plate 209. At this time, confirm again that all positioning surfaces can be fully contacted and properly positioned, and tighten the clamping screws to prevent them from loosening during subsequent processing. Then adjust an adjustable support pin 211 to make it contact with the bottom surface of the shell 1. Note that it only needs to be slightly forced to avoid pushing the shell 1, and then rotate and pre-clamp the fourth pressing block 207. Finally, clamp the above-mentioned raised pressing plates and clamping screws, as well as the second clamping screw 216 and the third clamping screw 217 located at the top, and the positioning and clamping of the shell 1 in the clamping mechanism are completed.

[0076] The high-precision probe 3, the rough boring angle head 4 and the fine boring angle head 5 are respectively used to be installed on the spindle of the horizontal machining center. Figure 7 As shown, the high-precision probe 3 used in the present invention connects the tapered handle of the high-precision probe to the spindle of the horizontal machining center in a high-precision positioning manner, and fits tightly with the tapered hole of the spindle, so that the axis of the probe is completely collinear with the axis of the spindle of the horizontal machining center, providing a guarantee for subsequent precise detection. The probe of the high-precision probe 3 extends into the inner cavity of the shell 1, and accurate position data of each side of the inner cavity of the shell is obtained through detection; a wireless transmission module is arranged in the high-precision probe 3 of the present invention, which can send the signal wirelessly to the numerical control system of the horizontal machining center, and the numerical control system automatically processes it, and then accurately determines the center coordinates of the shell. The high-precision probe 3 is used to realize automatic and precise centering, and its accuracy reaches within microns, and it has the functions of wireless transmission, working distance up to 15m, deep cavity detection, etc., and can match powerful measurement software that can be installed in the numerical control system.

[0077] like Figure 8 As shown, rough boring heads 401 are respectively arranged on both sides of the end of the rough boring angle head 4, and the rough boring head 401 has multiple blades evenly distributed in the circumferential direction; Fig. 9As shown, the fine boring heads 501 are respectively arranged on both sides of the end of the fine boring angle head 5, and the fine boring head 501 is provided with a blade on the periphery. One end of the angle head is a high-precision tool handle, which is connected to the spindle of the horizontal machining center with high-precision positioning and fits tightly with the tapered hole of the spindle, which makes the angle head have sufficient rigidity during the machining process. The other end is provided with tool heads on both sides. The rough boring angle head 4 and the fine boring angle head 5 are both double-headed, the rough boring head 401 is fixed, and the fine boring head 501 has a fine-tuning function.

[0078] like Figure 10-11 As shown, the fine boring tool head 501 includes: a fine boring tool body 502, a fine boring blade 503 and a fine adjustment block 504; a fine boring blade 503 is installed on the outer periphery of the fine boring tool body 502 through a locking screw 505; the fine boring tool body 502 is provided with an inclined groove above the installation position of the fine boring blade 503; the fine adjustment block 504 is installed in the inclined groove through an adjustment screw 506; the lower side of the fine adjustment block 504 is in contact with the fine boring blade 503. The fine adjustment block 504 and the fine boring blade 503 can slide closely in the inclined groove with a small angle. When the fine adjustment block 504 slides inward, the lower side will move slightly outward, and the maximum displacement is within 0.3mm. When the adjustment screw 506 is rotated, the fine adjustment block 504 will slide in the inclined groove, and its lower side will be slightly displaced, and the fine boring blade 503 in contact with it will also be slightly displaced. The size of the displacement can be accurately displayed by the tool setting instrument. After the adjustment is completed, the locking screw 505 is rotated to tighten the fine boring blade 503, and the fine adjustment of the fine boring head 501 is completed. When the size of the rocking chair surface is not qualified, the rocking chair surface can be compensated by fine-adjusting the fine boring head 501.

[0079] Due to changes in internal stress and dimensions approaching limit deviation values, the dimensional values ​​of the rocking chair surfaces may change after a few shells 1 are processed and removed from the clamping mechanism, and may even exceed the tolerance in some cases. In order to promptly discover these few defective products, the present invention provides a convenient detection mechanism 6 that can read precise detection values. The detection mechanism 6 of the present invention can detect two rocking chair surfaces at the same time and read accurate values ​​through a pointer meter.

[0080] Therefore, if Figure 12-15As shown, the shell rocking chair surface processing system of the present invention also includes: a detection mechanism 6; the detection mechanism 6 includes: a special calibration block 601, a swing block 602, a fixed plate 603 and a pointer meter 604. Two calibration rocking chair surfaces 606 are arranged on the special calibration block 601, and the two calibration rocking chair surfaces 606 correspond to the upper rocking chair surface 101 and the lower rocking chair surface 102 of the shell 1; two contacts 605 are arranged on each side of the swing block 602, and the contacts 605 correspond to the calibration rocking chair surfaces 606 respectively; a fixed plate 603 is arranged on the swing block 602, and two pointer meters 604 are arranged on the fixed plate 603 respectively; the measuring needle of the pointer meter 604 passes through the fixed plate 603 and the swing block 602, and extends out from the fixed plate 603 and the swing block 602.

[0081] The style of the special calibration block 601 is the same as the rocking seat surface of the shell 1, and the size value of its internal arc surface is the limit deviation value of the rocking seat surface size. The swing block 602 has two contacts 605 on the left and right, which are in contact with the upper rocking seat surface 101 and the lower rocking seat surface 102 of the shell 1 respectively. A fixed plate 603 is set on the top of the swing block 602. The two positioning columns at the bottom of the fixed plate 603 are inserted into the swing block 602 and fastened with hexagon socket set screws. Two pointer gauges 604 are inserted in the middle of the fixed plate 603 and are also fastened with hexagon socket set screws. The measuring needles of the two pointer gauges 604 pass through the fixed plate 603 and the swing block 602 and contact the rocking seat surface to be tested. Hold the fixed plate 603 with both hands and swing it, and the contact of the swing block 602 will slide on the rocking seat surface. During the sliding process, the test value can be easily read through the pointer gauge 604, and it is very easy to determine whether the size of the rocking seat surface is qualified. This detection method is simple and easy to learn, and the detection process is fast and accurate. Embodiment 2

[0082] The present invention provides a processing method of a shell rocking chair surface processing system according to any embodiment of the present invention, comprising the following process:

[0083] Step 1: clamp the shell 1 on the clamping mechanism 2 of the shell rocking chair surface processing system.

[0084] Step 2: Use a high-precision probe 3 to determine the center of the shell 1.

[0085] The high-precision probe 3 is installed on the spindle of the horizontal machining center, and the high-precision probe 3 is moved into the inner cavity of the shell 1. The high-precision probe 3 contacts the upper side surface, the lower side surface, the left side surface, and the right side surface respectively, and detects and determines the center coordinates of the shell 1.

[0086] Specifically, the probe of the high-precision probe 3 detects contact with the upper side of the shell 1, and it automatically transmits the signal to the CNC system of the horizontal machining center. The CNC system obtains the first machine tool coordinate a. When the probe contacts the lower side of the shell 1, it obtains the second machine tool coordinate b, and then determines that the center coordinate of the shell 1 in the upper and lower directions is a-(ab) / 2.

[0087] Afterwards, the probe of the high-precision probe 3 contacts the left side of the shell 1 for detection, and the CNC system obtains the third machine tool coordinate c. When the probe contacts the right side of the shell 1 for detection, the CNC system obtains the fourth machine tool coordinate d, and then determines that the center coordinate of the shell 1 in the left and right directions is d-(dc) / 2.

[0088] After the center coordinates of the shell 1 in the up-down direction and the center coordinates of the shell 1 in the left-right direction are determined, the center coordinates of the shell 1 are obtained.

[0089] The above process of determining the center coordinates of the shell 1 can be achieved through the test software installed in the numerical control system. Finally, the measurement software will automatically input the calculated center coordinates into the coordinate system of the numerical control system to establish the coordinate system for shell processing.

[0090] The data collected by the high-precision probe 3 of the present invention can be wirelessly sent to the numerical control system of the horizontal machining center, so that the horizontal machining center can control the movement of the rough boring angle head 4 and the fine boring angle head 5 according to the center coordinates of the shell 1. After determining the center coordinates of the shell 1, the automatic centering of the shell 1 is completed, and then the high-precision probe 3 is loaded into the tool library of the horizontal machining center so that it can be called at any time when it is used again in the future.

[0091] Step 3: Use the rough boring angle head 4 to perform rough boring processing on the upper rocking seat surface 101 and the lower rocking seat surface 102.

[0092] The rough boring angle head 4 is installed on the spindle, and the rough boring angle head 4 is moved into the inner cavity of the shell 1. The rough boring angle head 4 is then moved to the center coordinate of the shell 1, and is fed upward to perform rough boring processing on the upper rocking chair surface 101, and is fed downward to perform rough boring processing on the lower rocking chair surface 102. After the rough boring processing of the upper rocking chair surface 101 and the lower rocking chair surface 102 is completed, the rough boring angle head 4 is installed in the tool magazine of the horizontal machining center.

[0093] Step 4: Use the precision boring angle head 5 to perform precision boring processing on the upper rocking seat surface 101 and the lower rocking seat surface 102.

[0094] The precision boring angle head 5 is installed on the spindle, and the precision boring angle head 5 is moved into the inner cavity of the shell 1. Then the precision boring angle head 5 is moved to the center coordinate of the shell 1, and the precision boring angle head 5 is fed upward to perform precision boring processing on the upper rocking chair surface 101, and the precision boring angle head 5 is fed downward to perform precision boring processing on the lower rocking chair surface 102. After the precision boring processing of the upper rocking chair surface 101 and the lower rocking chair surface 102 is completed, the precision boring angle head 5 is installed in the tool magazine of the horizontal machining center.

[0095] Step 5: Use the high-precision probe 3 to detect the upper rocking seat surface 101 and the lower rocking seat surface 102.

[0096] Install the high-precision probe 3 onto the spindle again, move the high-precision probe 3 to the upper rocking chair surface 101 of the inner cavity of the shell 1, and detect the upper rocking chair surface 101; move the high-precision probe 3 to the lower rocking chair surface 102 of the inner cavity of the shell 1, and detect the lower rocking chair surface 102; if both the upper rocking chair surface 101 and the lower rocking chair surface 102 are qualified, the fine machining of the rocking chair surface of the shell 1 is completed; if the upper rocking chair surface 101 and / or the lower rocking chair surface 102 are unqualified, call out the fine boring angle head 5 again, fine-tune the fine boring tool head 501 on the fine boring angle head 5 according to the compensation value, and then perform fine boring again until the machining is qualified. Among them, the rocking chair surface detection is to detect the size of the rocking chair surface diameter online, which requires the high-precision probe 3 to measure the arc surface of the upper rocking chair surface 101 and the lower rocking chair surface 102 for multiple times, and can obtain a large number of measurement points. These points are fitted into an arc surface, and then the arc surface is analyzed, and the average value is taken as the measurement value of the rocking chair surface diameter. The rocking chair surface detection process can be realized by the test software installed in the numerical control system.

[0097] After the fine boring of the upper rocking seat surface 101 and the lower rocking seat surface 102 is completed, the fine boring angle head 5 is loaded into the tool magazine of the horizontal machining center.

[0098] Step 5 is to timely confirm whether the size of the rocking chair surface after processing is qualified, and the high-precision probe 3 is used for online detection; the ability to detect online has a very obvious advantage for the shell rocking chair surface, because the positioning surface of the shell 1 in the clamping mechanism is all rough surface. Once removed, no matter how it is reinstalled, it is impossible to be exactly the same as the previous positioning situation. The fundamental reason is that the size of the rough surface used for positioning is too large, which means that once removed, it cannot be reworked and can only be scrapped. Therefore, it is very important to process the rocking chair surface to be qualified for the first time. When the rocking chair surface is processed, the high-precision probe 3 is driven in time to detect the size of the two rocking chair surfaces. Especially when the processing is just started or there is a change, their sizes will not be qualified at once, and they will not be the same size value. The specific detection data obtained is calculated with the theoretical size to determine the compensation value required for compensation processing. At this time, the two fine boring heads 501 of the fine boring angle head 5 are fine-tuned respectively, and the boring process is re-performed. This is repeated until it is confirmed that the size of the rocking chair surface is qualified. In the actual production process, the dimensions of the rocking chair surface will generally fluctuate and become unqualified only when the product is initially debugged, blades are replaced, or batches of shell blanks are changed. During the processing, the dimensions are generally qualified and do not need to be adjusted frequently. This method realizes the online detection of the rocking chair surface processing of the shell product and timely compensation processing, which greatly improves the finished product rate of the shell product.

[0099] The formula for calculating the compensation value is: Q=(Dl-Dc) / 2, where Dl=D+(HL) / 2;

[0100] In the above formula, the theoretical value of the rocking chair surface diameter is the middle size value of the tolerance zone, D represents the nominal size, H represents the upper tolerance, L represents the lower tolerance, Dl represents the theoretical value of the rocking chair surface diameter, Dc represents the measured value of the rocking chair surface diameter, and Q represents the compensation value.

[0101] The following is an example: Taking φ125 (0~+0.04) as an example, the nominal size D=125, the upper tolerance H=0.04, and the lower tolerance L=0. According to the above formula, its theoretical value Dl=125+(0.04-0) / 2=125.02.

[0102] If the dimension value of the rocking chair surface measured after fine boring is Dc=φ124.98, this dimension value exceeds the lower tolerance, but it can be reworked. According to the above formula, its compensation value Q=(125.02-124.98) / 2=0.02. At this time, it is necessary to adjust the fine boring head, adjust the tool tip by 0.02, and re-boring.

[0103] Step 6: Use the detection mechanism 6 to manually re-check the upper rocking seat surface 101 and the lower rocking seat surface 102 of the shell 1.

[0104] After the shell 1 is processed, remove the chips, cutting fluid, etc. remaining on the shell 1 and the clamping mechanism, loosen the clamping screws and the pressure plates, and rotate the first pressure block 204, the second pressure block 205, the third pressure block 206, and the fourth pressure block 207 on the upper part to the initial position; remove the shell 1 from the clamping mechanism 2 (hang it out), place it on the detection mechanism 6, blow it clean with compressed air, and place it on the detection table. The detection mechanism 6 is placed flat on the detection table.

[0105] Place the swing block 602 on the special calibration block 601, let the contacts 605 on the left and right sides of the swing block 602 contact the two calibration rocking chair surfaces 606 respectively, hold the fixed plate 603 with both hands and swing it, the contact 605 of the swing block 602 will slide on the calibration rocking chair surface 606, pay attention to the pointer meter 604 during the sliding process, and clear it in time when the pointer is stable, then the calibration of the rocking chair surface is completed.

[0106] Hold the fixed plate 603 and place the detection mechanism 6 on the upper rocking chair surface 101 and the lower rocking chair surface 102 processed in the inner cavity of the shell 1, so that the contacts 605 on the left and right sides of the swing block 602 are in contact with the upper rocking chair surface 101 and the lower rocking chair surface 102 respectively, hold the fixed plate 603 with both hands and swing it, the contact 605 of the swing block 602 will slide on the upper rocking chair surface 101 and the lower rocking chair surface 102, pay attention to the pointer meter 604 during the sliding process, and determine whether the upper rocking chair surface 101 and the lower rocking chair surface 102 are qualified through the detection value of the pointer meter 604.

[0107] When processing the product again, repeat steps 1 to 6 above.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that modifying the technical solutions described in the aforementioned embodiments, or replacing some or all of the technical features therein by equivalents, does not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shell rocking chair surface processing system, characterized in that: include: A clamping mechanism (2), a high-precision measuring head (3), a rough boring angle head (4) and a fine boring angle head (5); The clamping mechanism (2) comprises: a clamp base plate (201), a first support frame (202) and a second support frame (203); The first support frame (202) and the second support frame (203) are arranged in parallel on the fixture bottom plate (201); The first support frame (202) and the second support frame (203) are U-shaped; the first support frame (202) comprises a first leg, a first base and a second leg connected in one piece, the first leg being shorter than the second leg; the second support frame (203) comprises a third leg, a second base and a fourth leg connected in one piece; A first pressing block (204) is detachably provided on the second supporting leg; A second pressing block (205) is detachably provided on the third leg, the second pressing block (205) extends toward the first leg, a fourth pressing block (207) is detachably provided on the second pressing block (205); and a third pressing block (206) is detachably provided on the fourth leg; A plurality of positioning columns are respectively arranged on the first base and the second base; A clamping plate (209) is provided on the inner side surface of the first base; an axial positioning seat (212) is provided on the inner side surface of the second base; and an adjustable positioning pin is provided on the axial positioning seat (212); The high-precision measuring head (3), the rough boring angle head (4) and the fine boring angle head (5) are respectively used for being installed on the main spindle of a horizontal machining center.

2. The shell rocking chair surface processing system according to claim 1, characterized in that: The fixture bottom plate (201) is fixed on a rotatable workbench (7).

3. The shell rocking chair surface processing system according to claim 1, characterized in that: A fourth pressing block (207) is arranged on the second pressing block (205) via a connecting seat (208).

4. The shell rocking chair surface processing system according to claim 1, characterized in that: Two fixed positioning columns (210) are arranged on the first base, and one fixed positioning column (210) and one adjustable supporting nail (211) are arranged on the second base.

5. The shell rocking chair surface processing system according to claim 4, characterized in that: The first leg is provided with a first laterally adjustable positioning column (213); the second leg is provided with a first clamping screw (215); the third leg is provided with a second laterally adjustable positioning column (214) and a second clamping screw (216); and the fourth leg is provided with a third clamping screw (217) and a fourth clamping screw (218).

6. The shell rocking chair surface processing system according to claim 1, characterized in that: Also includes: Testing agencies (6); The detection mechanism (6) comprises: a special calibration block (601), a swing block (602), a fixed plate (603) and a pointer meter (604); Two calibration rocking surfaces (606) are provided on the dedicated calibration block (601), and the two calibration rocking surfaces (606) correspond to the upper rocking surface (101) and the lower rocking surface (102) of the shell (1); Two contact points (605) are arranged on each side of the swing block (602), and the contact points (605) correspond to the calibration rocking chair surfaces (606) respectively; A fixed plate (603) is arranged on the swing block (602), and two pointer gauges (604) are respectively arranged on the fixed plate (603); the measuring needles of the pointer gauges (604) pass through the fixed plate (603) and the swing block (602).

7. The shell rocking chair surface processing system according to claim 1, characterized in that: Rough boring tool heads (401) are respectively arranged on both sides of the end of the rough boring angle head (4); Precision boring tool heads (501) are respectively arranged on both sides of the end of the precision boring angle head (5).

8. A processing method for a shell rocking chair surface processing system according to any one of claims 1 to 7, characterized in that: The process includes: Step 1, clamping the shell (1) on the clamping mechanism (2) of the shell rocking chair surface processing system; Step 2: Use a high-precision probe (3) to determine the center of the housing (1): The high-precision probe (3) is mounted on the spindle of the horizontal machining center, and the high-precision probe (3) is moved into the inner cavity of the shell (1). The high-precision probe (3) contacts and detects the upper side surface, the lower side surface, the left side surface, and the right side surface respectively to determine the center coordinates of the shell (1); Step 3, using a rough boring angle head (4), rough boring the upper rocking chair surface (101) and the lower rocking chair surface (102): The rough boring angle head (4) is mounted on the spindle, and the rough boring angle head (4) is moved into the inner cavity of the housing (1). The rough boring angle head (4) is then moved to the center coordinate of the housing (1), and the rough boring angle head (4) is fed upward to perform rough boring processing on the upper rocking chair surface (101), and the rough boring angle head (4) is fed downward to perform rough boring processing on the lower rocking chair surface (102). After the rough boring processing of the upper rocking chair surface (101) and the lower rocking chair surface (102) is completed, the rough boring angle head (4) is mounted in a tool magazine of a horizontal machining center; Step 4: Use the precision boring angle head (5) to perform precision boring on the upper rocking chair surface (101) and the lower rocking chair surface (102): The precision boring angle head (5) is mounted on the spindle, and the precision boring angle head (5) is moved into the inner cavity of the housing (1). The precision boring angle head (5) is then moved to the center coordinate of the housing (1), and the precision boring head (5) is fed upward to perform precision boring processing on the upper rocking chair surface (101), and the precision boring head (5) is fed downward to perform precision boring processing on the lower rocking chair surface (102). After the precision boring processing of the upper rocking chair surface (101) and the lower rocking chair surface (102) is completed, the precision boring angle head (5) is mounted in a tool magazine of a horizontal machining center.

9. The processing method according to claim 8, characterized in that: After step 4, it also includes: Step 5: Use a high-precision probe (3) to detect the upper rocking chair surface (101) and the lower rocking chair surface (102): The high-precision probe (3) is installed on the spindle again, and the high-precision probe (3) is moved to the upper rocking chair surface (101) of the inner cavity of the shell (1) to detect the upper rocking chair surface (101); the high-precision probe (3) is moved to the lower rocking chair surface (102) of the inner cavity of the shell (1) to detect the lower rocking chair surface (102); if the upper rocking chair surface (101) and the lower rocking chair surface (102) are both qualified, the fine processing of the rocking chair surface of the shell (1) is completed; if the upper rocking chair surface (101) and / or the lower rocking chair surface (102) are unqualified, the fine boring angle head (5) is called out again, and the fine boring cutter head (501) on the fine boring angle head (5) is finely adjusted according to the compensation value, and then fine boring processing is performed again until the processing is qualified.

10. The processing method according to claim 9, characterized in that: After step 5, it also includes: Step 6: using the detection mechanism (6), manually re-inspect the upper rocking seat surface (101) and the lower rocking seat surface (102) of the shell (1).

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