A tooling fixture and machining method suitable for an engine cylinder head

Abstract

The application discloses a tool clamp and machining method suitable for an engine cylinder cover and belongs to the field of numerical control lathes, and comprises a rotary table and a bottom plate arranged on the rotary table; a plurality of first clamping units and a plurality of supporting blocks are arranged on the bottom plate; the plurality of first clamping units are arranged along the periphery of the bottom plate and are used for clamping the periphery of a part to be machined; the plurality of supporting blocks are arranged at positions corresponding to the arrangement positions of the plurality of first clamping units and are used for supporting the bottom of the part to be machined; at least one gas detection hole is further formed on the contact surface of the supporting block and the part to be machined, and the at least one gas detection hole is in communication with an external gas tightness instrument. The tool clamp and machining method suitable for the engine cylinder cover have the advantages that the overall structure is simple, the operation is convenient, the gas tightness instrument is used to detect the product after the product is placed, the gas tightness instrument is linked with a cleaning nozzle, the pressure of the cleaning nozzle is adjusted, the cleaning effect is optimized, and the tool clamp and machining method have good practical value and application prospect.

Description

Technical Field

[0001] This invention belongs to the field of CNC lathes, and specifically relates to a tooling fixture and machining method suitable for engine cylinder heads. Background Technology

[0002] Numerical control (NC) machining refers to a process method for machining parts on CNC machine tools. While the process specifications of CNC machining are generally consistent with those of traditional machine tool machining, significant changes have occurred. It is a machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve problems such as diverse part types, small batches, complex shapes, and high precision, and to achieve efficient and automated machining.

[0003] After the existing equipment finishes processing the product, aluminum shavings will inevitably remain on the fixture. In order to ensure product quality, operators usually need to use an air gun to clean the aluminum shavings remaining on the fixture support surface and positioning pin before loading the product. After loading the product, operators also need to check the product's position to ensure that the product's positioning surface is in close contact with the fixture support surface. This is to prevent the product from being misaligned, which could lead to abnormalities such as tool breakage or dimensional deviations during processing. Manual inspection not only introduces errors but also reduces work efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tooling fixture and processing method suitable for engine cylinder heads. By using an air tightness tester and an air detection hole on a support block, the pressure inside the air detection hole can be detected by the air tightness tester after the product is placed on the support block, thereby determining whether the product is properly assembled and ensuring that the product can be stably assembled onto the fixture.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tooling fixture suitable for engine cylinder heads, comprising a turntable and a base plate disposed on the turntable;

[0006] Multiple first clamping units and multiple support blocks are provided on the base plate; the multiple first clamping units are arranged along the outer periphery of the base plate and are used to clamp the outer periphery of the workpiece to be processed; the positions of the multiple support blocks correspond to the positions of the multiple first clamping units and are used to support the bottom of the workpiece to be processed.

[0007] At least one air inspection hole is formed on the contact surface between the support block and the part to be processed. This air inspection hole is connected to an external air tightness tester, which is used to detect whether the product is assembled in place.

[0008] As a further improvement of the present invention, the first clamping unit includes a first base, a first hydraulic rod, a first pressing block, and two first support plates.

[0009] As a further improvement of the present application, the upper surface of the first base is fixed with a first hydraulic rod, the outer side of the output shaft of the first hydraulic rod is hinged with a first pressing block through a hinge shaft, the inside of the first pressing block is hinged with two first supporting plates through a hinge shaft, and the two first supporting plates are respectively hinged on the left and right sides of the first pressing block through a hinge shaft.

[0010] As a further improvement of the present application, the top projection surface of part or all of the supporting blocks is semicircular.

[0011] As a further improvement of the present application, a plurality of air channels are formed on the bottom plate, the plurality of air channels are communicated with the air detection holes on the plurality of supporting blocks, and the air tightness instrument is communicated with the air channels.

[0012] As a further improvement of the present application, a second clamping unit is further included, which comprises a second base, a second hydraulic rod, a second pressing block and two second supporting plates, the inside of the second base is fixed with the second hydraulic rod, the outer side of the output shaft of the second hydraulic rod is hinged with the second pressing block through a hinge shaft, the inside of the second pressing block is hinged with the two second supporting plates through a hinge shaft, and the two second supporting plates are respectively hinged on the left and right sides of the second pressing block through a hinge shaft.

[0013] As a further improvement of the present application, a plurality of cleaning structures are further included, which are arranged on the bottom plate.

[0014] The cleaning structure comprises a cleaning nozzle and an adjusting valve, the cleaning nozzle is fixed on the bottom plate, and the adjusting valve is arranged on the cleaning nozzle.

[0015] As a further improvement of the present application, the cleaning structure is electrically connected with the air tightness instrument through a controller.

[0016] As a further improvement of the present application, the rotary table structure comprises a motor, a rotating shaft and a rotating plate, the outer side of the output shaft of the motor is fixed with the rotating shaft, the rotating plate is fixed on the outer side of the rotating shaft, and the bottom plate is arranged on the rotating plate on the rotary table.

[0017] On the basis, the present application further provides a machining method suitable for the engine compartment cover, which utilizes the above tool clamp to realize, and comprises the following steps:

[0018] S100: pre-installing the product to be machined on the clamp, and detecting the air pressure of the product on the supporting block after assembly by the air tightness instrument through the air detection hole;

[0019] S200: judging whether the product is installed in place through the air pressure; if yes, feeding back a signal to the controller; if not, manually adjusting the position of the cylinder cover;

[0020] S300: after machining, taking down the machined product, and detecting whether the product is separated from the supporting block again by the air tightness instrument and the air detection hole;

[0021] S400: When the cylinder cover is separated from the support block, then the control washing structure flushes the support block.

[0022] The above technical features can be combined with each other as long as they do not conflict with each other.

[0023] Overall, compared with the prior art, the above technical solutions conceived by the present application have the following beneficial effects:

[0024] (1) The tool clamp and machining method suitable for engine cylinder covers of the present application, by setting the air tightness instrument and the gas detection hole on the support block, can detect the pressure in the gas detection hole through the air tightness instrument after the product is placed on the support block, so as to determine whether the product is assembled in place, so as to ensure that the product can be stably assembled on the clamp.

[0025] (2) The tool clamp and machining method suitable for engine cylinder covers of the present application, by setting a plurality of cleaning nozzles on the bottom plate, can clean the surface of the clamp through the cleaning nozzles after the product is machined on the clamp, and at the same time, the air tightness instrument and the adjusting valve are adjusted to adjust the water flushing pressure to prevent waste from splashing during water flushing.

[0026] (3) The tool clamp and machining method suitable for engine cylinder covers of the present application has simple overall structure and convenient operation, which not only detects the product after placement by using the air tightness instrument, but also links the air tightness instrument with the cleaning nozzle to adjust the pressure of the cleaning nozzle, optimize the cleaning effect, and has good practical value and application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall axonometric structure diagram of the tool clamp in the preferred embodiment of the present application;

[0028] Figure 2 is the overall structure diagram of the support block and the gas detection hole in the tool clamp in the preferred embodiment of the present application;

[0029] Figure 3 is the structure diagram of the first clamping unit in the tool clamp in the preferred embodiment of the present application;

[0030] Figure 4 is the structure diagram of the second clamping unit in the tool clamp in the preferred embodiment of the present application;

[0031] Figure 5 is the overall logic block diagram of the machining method in the preferred embodiment of the present application.

[0032] In the figure: 1, turntable; 2, bottom plate; 3, gas detection hole; 4, air duct; 5, cleaning nozzle; 6, support block;

[0033] 7, first clamping unit; 701 first base; 702 first hydraulic rod; 703 first pressing block; 704 first supporting plate;

[0034] 8, second clamping unit; 801 second base; 802 second hydraulic rod; 803 second pressing block; 804 second supporting plate. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0038] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0040] Embodiments:

[0041] Please refer to Figures 1-4 The present application provides a tool clamp suitable for engine cylinder head, which is provided with an air tightness instrument and an air detection hole arranged on the supporting block, so that the product can be placed on the supporting block, and the pressure in the air detection hole can be detected by the air tightness instrument to determine whether the product is assembled in place, so as to ensure that the product can be stably assembled on the clamp.

[0042] Specifically, the tool clamp in the preferred embodiment of the present application comprises Figure 1 The tool clamp suitable for engine cylinder head in the embodiment comprises a rotary table 1, a bottom plate 2 arranged on the rotary table 1, and a plurality of first clamping units 7 and a plurality of supporting blocks 6 arranged on the bottom plate 2. The plurality of first clamping units 7 are arranged along the outer periphery of the bottom plate 2 and used for clamping the outer periphery of the part to be machined. The plurality of supporting blocks 6 are arranged at positions corresponding to the arrangement positions of the plurality of first clamping units 7 and used for supporting the bottom of the part to be machined.

[0043] In actual production and machining process, according to the area of the bottom surface of the product to be machined, a plurality of supporting blocks 6 can be arranged. The tool clamp in the preferred embodiment of the present application is suitable for engine cylinder head. Therefore, the first clamping units 7 and the plurality of supporting blocks 6 are preferably arranged on the outer periphery of the bottom plate 2, so that the plurality of first clamping units 7 and the plurality of supporting blocks 6 can support and fix the position of the cylinder head bottom close to the outer periphery.

[0044] Of course, a plurality of supporting blocks 6 are also arranged at positions close to the center of the bottom plate 2, which are used for supporting the position close to the center of the bottom surface of the product to be machined.

[0045] At the same time, since the arrangement positions of the supporting blocks 6 are different, the contact between the supporting surfaces of the supporting blocks 6 and the clamp is also different. The supporting blocks 6 arranged on the outer periphery of the cylinder head are preferably in the form of a semicircular projection surface and have a smooth cross section, so as to support the outer side and the bottom of the cylinder head at the same time. The supporting blocks 6 used only for supporting the bottom of the cylinder head can be arranged in the same or different forms, as long as they meet the basic use requirements.

[0046] Further, please refer to Figure 2 In the embodiment, at least one gas detection hole 3 is further formed on the contact surface of the support block 6 and the part to be machined, and the at least one gas detection hole 3 is in communication with an external air tightness instrument, so that whether the product is assembled in place is detected by the air tightness instrument.

[0047] In more detail, a plurality of air channels 4 are formed on the bottom plate 2, and the plurality of air channels 4 are in communication with the gas detection holes 3 on the plurality of support blocks 6; the air tightness instrument is in communication with the air channels 4.

[0048] In actual use, if the cylinder cover completely prevents the support surface of the support block 6, one end of the gas detection hole 3 is in a closed state, and after the air tightness instrument is inflated inward, the maximum pressure can be reached in a certain time. If the cylinder cover completely covers the detection hole, the air tightness instrument can continuously inflate inward. Whether it is placed in the specified position is determined by the air tightness instrument.

[0049] In actual setting, preferably, the gas detection hole 3 is arranged on the plurality of support blocks 6 for multi-point detection, so as to ensure that the cylinder cover is placed in place.

[0050] Further, the preferred embodiment of the tool clamp of the present application further comprises a plurality of cleaning structures arranged on the bottom plate 2; the cleaning structure comprises a cleaning nozzle 5 and an adjusting valve, the cleaning nozzle 5 is fixed on the bottom plate 2, and the adjusting valve is arranged on the cleaning nozzle 5.

[0051] In actual use, after the product is machined, the product is taken off from the clamp, and the bottom plate 2 and the support block 6 can be flushed by the cleaning nozzle 5.

[0052] Further, in order to realize intelligent control of the cleaning nozzle 5, the adjusting valve controller is electrically connected with the air tightness instrument. In actual use, when the air tightness instrument is turned on, the airflow blown out of the support block gas detection hole 3 will carry the cutting fluid and splash out of the machine tool, causing environmental pollution; when the air tightness instrument is turned off, the cutting fluid will flow into the air channel 4 of the bottom plate 2 through the support block gas detection hole 3, and when the air tightness instrument is started next time, the cutting fluid in the gas detection hole 3 will be sprayed out of the support block gas detection hole 3 with the airflow, which will also splash out of the machine tool, causing environmental pollution. Therefore, by switching the air pressure of the air tightness instrument, the air tightness instrument is switched to low pressure to avoid the above situation, after the clamp is automatically flushed, the air tightness instrument is switched back to normal pressure, and the operator continues to load, entering the next cycle.

[0053] Further, in order to realize stable clamping of the cylinder cover, please refer to Figure 3The first clamping unit 7 in the embodiment comprises a first base 701, a first hydraulic rod 702, a first pressing block 703 and two first supporting plates 704; the first hydraulic rod 702 is fixed on the upper surface of the first base 701, the first pressing block 703 is hinged to the outer side of the output shaft of the first hydraulic rod 702 through a hinge shaft, the two first supporting plates 704 are hinged to the inside of the first pressing block 703 through a hinge shaft, and the two first supporting plates 704 are respectively hinged to the left and right sides of the first pressing block 703 through a hinge shaft.

[0054] Meanwhile, please refer to Figure 4 The second clamping unit 8 in the embodiment comprises a second base 801, a second hydraulic rod 802, a second pressing block 803 and two second supporting plates 804; the second hydraulic rod 802 is fixed in the second base 801, the second pressing block 803 is hinged to the outer side of the output shaft of the second hydraulic rod 802 through a hinge shaft, the two second supporting plates 804 are hinged to the inside of the second pressing block 803 through a hinge shaft, and the two second supporting plates 804 are respectively hinged to the left and right sides of the second pressing block 803 through a hinge shaft.

[0055] In the actual application process, the first clamping unit 7 and the second clamping unit 8 are respectively used to clamp the beam body in the outer periphery and the hollow area of the cylinder cover, so as to realize the stable clamping of the cylinder cover.

[0056] In addition, the rotating table 1 structure comprises a motor, a rotating shaft and a rotating plate, the motor output shaft is connected with the rotating shaft, the rotating plate is connected with the end of the rotating shaft, and the bottom plate 2 is arranged on the rotating plate of the rotating table 1.

[0057] The working principle of the tool clamp in the preferred embodiment of the application is as follows: first, the product part to be machined is pre-installed on the clamp, the product is installed in place, the positioning surface is tightly attached to the clamp supporting surface, and the air-tight instrument detects whether the product is closed through the air detection hole 3 and the air duct 4, so as to judge whether the product is clamped in place. If clamped in place, the machine tool is allowed to start; otherwise, the machine tool is prohibited from starting. After the product is machined, the operator takes out the machined product, and before the machine enters the next cycle, the control washing structure washes the supporting surface.

[0058] On this basis, the application further provides a machining method suitable for an engine cover, please refer to Figure 5 which utilizes the tool clamp in the preferred embodiment to realize, and comprises the following steps:

[0059] S100: pre-installing the product to be machined on the clamp, and detecting the air pressure of the product on the supporting block 6 after assembly by the air-tight instrument through the air detection hole 3.

[0060] S200: Determine whether the product is installed in place by air pressure; if installed in place, feedback the signal to the controller; if not installed in place, manually continue to adjust the position of the cylinder cover.

[0061] S300: After processing, remove the processed product, and use the air tightness tester and the air detection hole 3 to detect whether the product is separated from the support block 6.

[0062] S400: When the cylinder cover is separated from the support block 6, control the cleaning structure to flush the support block 6.

[0063] (1) The tool clamp and processing method suitable for engine cylinder cover of the application, by setting the air tightness tester and the air detection hole on the support block, the product can be detected by the air tightness tester after being placed on the support block, to determine whether the product is assembled in place, to ensure that the product can be stably assembled on the clamp.

[0064] (2) The tool clamp and processing method suitable for engine cylinder cover of the application, by setting multiple cleaning nozzles on the bottom plate, the surface of the clamp can be cleaned by the cleaning nozzles after the product is processed on the clamp, at the same time, the air tightness tester and the adjusting valve are matched to adjust the water pressure, to prevent waste from splashing during flushing.

[0065] (3) The tool clamp and processing method suitable for engine cylinder cover of the application, the overall structure is simple and convenient to operate, not only uses the air tightness tester to detect the product after being placed, but also links the air tightness tester with the cleaning nozzle to adjust the pressure of the cleaning nozzle, optimizes the cleaning effect, has good practical value and application prospect.

[0066] Those skilled in the art will readily understand that the above description is only a preferred embodiment of the application and is not intended to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A tooling fixture suitable for engine cylinder head, comprising a rotary table and a base plate arranged on the rotary table, characterized in that: a plurality of first clamping units and a plurality of supporting blocks are arranged on the base plate; the plurality of first clamping units are arranged along the outer periphery of the base plate for clamping the outer periphery of the workpiece; the plurality of supporting blocks are arranged corresponding to the plurality of first clamping units for supporting the bottom of the workpiece; the first clamping unit comprises a first base, a first hydraulic rod, a first pressing block and two first supporting plates; the upper surface of the first base is fixed with the first hydraulic rod; the outer side of the output shaft of the first hydraulic rod is hinged with the first pressing block through a hinge shaft, the inside of the first pressing block is hinged with the two first supporting plates through a hinge shaft, and the two first supporting plates are respectively hinged on the left and right sides of the first pressing block through a hinge shaft; the top view of part or all of the supporting blocks is semicircular; at least one air detection hole is formed on the contact surface between the supporting block and the workpiece, which communicates with the air tightness instrument outside, so as to detect whether the product is assembled in place by using the air tightness instrument; a plurality of air channels are formed on the base plate, which communicate with the air detection holes on the plurality of supporting blocks; the air tightness instrument communicates with the air channel; a plurality of cleaning structures are arranged on the base plate; the cleaning structure comprises a cleaning nozzle and an adjusting valve, the cleaning nozzle is fixed on the base plate, and the adjusting valve is arranged on the cleaning nozzle; the cleaning structure is electrically connected with the air tightness instrument through the controller, the air tightness instrument is switched to low pressure during flushing, the fixture automatically flushes water after completion, the air tightness instrument is switched back to normal pressure, and the operator continues to feed, entering the next cycle. a second clamping unit is further included, which comprises a second base, a second hydraulic rod, a second pressing block and two second supporting plates; 2. A tooling fixture suitable for use with an engine cylinder head according to claim 1, characterized in that: the inside of the second base is fixed with the second hydraulic rod, the outer side of the output shaft of the second hydraulic rod is hinged with the second pressing block through a hinge shaft, the inside of the second pressing block is hinged with the two second supporting plates through a hinge shaft, and the two second supporting plates are respectively hinged on the left and right sides of the second pressing block through a hinge shaft. the structure of the rotary table comprises a motor, a rotating shaft and a rotating plate, the output shaft of the motor is connected with the rotating shaft, the rotating plate is fixed on the outside of the rotating shaft, and the base plate is arranged on the rotating plate.

3. The tooling fixture for an engine cylinder head of claim 1, wherein: The tooling fixture of any one of claims 1-3 is used to realize the following steps:

4. A method of processing suitable for an engine compartment cover, characterized by, S100: pre-installing the workpiece on the fixture, and detecting the air pressure of the supporting block after the product is assembled by using the air tightness instrument through the air detection hole; S200: judging whether the product is installed in place by air pressure; if installed in place, feeding a signal to the controller; if not installed in place, manually adjusting the position of the cylinder head; S300: after processing, taking down the processed product, and detecting whether the product is separated from the supporting block by using the air tightness instrument and the air detection hole again; S400: when the cylinder head is separated from the supporting block, the cleaning structure is controlled to flush the supporting block. ​

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