Combined machining clamp for machining engine cylinder block

Abstract

The utility model relates to the technical field of engine cylinder block machining, and particularly discloses a combined machining clamp for engine cylinder block machining. Comprising a clamp back plate used for bearing the engine cylinder body and a pressing plate mechanism used for clamping the engine cylinder body. Mounting holes are uniformly formed in the clamp back plate at intervals; the pressing plate mechanism and the clamp back plate are detachably installed. The pressing plate mechanism comprises a pressing plate, a supporting rod for supporting the pressing plate and a screw rod for adjusting the extension length of the pressing plate; the height between the screw rod and the clamp back plate is adjustable; when the engine cylinder block is clamped, the clamping device at least comprises a pair of pressing plate mechanisms arranged on the two sides of the engine cylinder block. The pair of pressing plate mechanisms abut against the engine cylinder block through the pressing plates arranged on the two sides of the engine cylinder block so that clamping of the engine cylinder block can be completed, the engine cylinder block machining clamp is suitable for machining of engine cylinder blocks of various models, and the universality of the clamp is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine cylinder block processing, especially to a combined type machine tool clamp for engine cylinder block processing. BACKGROUND

[0002] In the process of machining engine cylinder blocks, clamps are often used to ensure the precision and efficiency of machining during machine operation. However, due to the various sizes of engine cylinder blocks, designing a dedicated clamp for each size of engine cylinder block would significantly increase costs. Moreover, when machining engine cylinder blocks of different sizes, the clamp needs to be replaced, which not only takes time but also may affect production efficiency. The clamp systems currently available on the market are often only suitable for the machining of a single product, and their versatility is not ideal, which causes many inconveniences and difficulties when switching between different products. Due to this lack of versatility, enterprises often have to invest additional resources to design and manufacture new clamps when facing new products, which not only increases the economic burden of enterprises but also is not efficient in terms of economic benefits. Furthermore, the existing clamp design and manufacturing process often takes a long time, which not only prolongs the product development cycle from design to final market launch but also may affect the market response speed and overall competitiveness of the enterprise.

[0003] In the patent "A clamp for engine cylinder block machining" (publication number CN222493855U, hereinafter referred to as prior art 1), a clamp for engine cylinder block is disclosed. In prior art 1, a positioning and fixing device is set on the fixed base plate, which realizes the firm fixation of the cylinder block on the upper surface of the fixed base plate. This device can complete the finishing machining of the four sides and the bottom of the cylinder block at one time, significantly improving the machining precision. In this way, the bottom and the four sides of the cylinder block are not scratched during clamping, thereby reducing the overall machining process. This process of reducing the process not only improves the production efficiency but also reduces the work intensity of the operators and inspection and measurement personnel.

[0004] However, the fixing device in prior art 1 has certain limitations. Specifically, this device cannot be adjusted in position, which means it cannot adapt to cylinder blocks of different sizes or shapes. Therefore, it can only be used to machine a specific type of cylinder block or a single product. This lack of flexibility results in poor commonality, which in turn makes the investment cost relatively high, as each different type of cylinder block requires a dedicated machining device, which undoubtedly increases the equipment investment and maintenance costs of enterprises. UTILITY MODEL CONTENTS

[0005] Therefore, the combined machining clamp for engine cylinder body processing is provided in the embodiments of the present utility model, which can solve the problem that the existing clamp used for machining engine cylinder body can only be applied to single product, leading to poor commonality and high cost of manufacturing clamp.

[0006] The combined machining clamp for engine cylinder body processing is provided in the embodiments of the present utility model, which can solve the problem that the existing clamp used for machining engine cylinder body can only be applied to single product, leading to poor commonality and high cost of manufacturing clamp.

[0007] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0008] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0009] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0010] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0011] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0012] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0013] Preferably, the clamp back plate is provided with a plurality of mounting holes arranged at equal intervals.

[0014] Preferably, the other end of the clamp back plate is provided with a clamp bottom plate; the clamp bottom plate is detachably connected with the first back plate reinforcing rib, the second back plate reinforcing rib and the clamp back plate respectively.

[0015] Preferably, the pressing plate mechanism, the positioning mechanism, the first supporting pad, the second supporting pad, the first back plate reinforcing rib, the second back plate reinforcing rib, the third back plate reinforcing rib and the clamp bottom plate are combined through detachable connection to form the combined assembly fixture.

[0016] The combined machining fixture for engine cylinder body processing has the following beneficial effects:

[0017] In the utility model, a plurality of uniformly distributed mounting holes are arranged on the clamp back plate, the pressing plate mechanism is detachably installed, the pressing plate position can be flexibly adjusted according to the size and shape of different engine cylinder bodies, the combined fixture is suitable for engine cylinder body processing of various models, and the universality of the fixture is remarkably improved. The traditional fixture is usually a single product design, and the combined fixture is designed through the adjustable pressing plate mechanism and the mounting hole, so that the number of special fixtures is reduced, and the complexity of fixture management is reduced. The extension length of the pressing plate is adjusted through the screw rod, different sizes of engine cylinder bodies can be quickly adapted, the clamping adjustment time is reduced, and the production efficiency is improved. The pressing plate mechanism can be flexibly arranged according to the shape of the engine cylinder body and the processing requirement, so as to ensure the stability and precision of clamping and adapt to various processing procedures. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments of the utility model, for the ordinary skilled in the art, on the premise of not creating laboriously, still can obtain other drawings according to these drawings, these are within the protection scope of the utility model.

[0019] Figure 1 It is a kind of combined fixture for engine cylinder body processing and the assembly schematic view of engine cylinder body;

[0020] Figure 2 It is another angle assembly schematic view of a kind of combined fixture for engine cylinder body processing and engine cylinder body;

[0021] Figure 3 It is the structure schematic view of pressing plate mechanism;

[0022] Figure 4 It is the structure schematic view of pressing plate;

[0023] Figure 5 It is the structure schematic view of positioning mechanism;

[0024] Parts and numbers in drawing:

[0025] 100 - engine block

[0026] 200 - clamp back plate, 210 - mounting hole

[0027] 300 - press plate mechanism, 310 - press plate, 311 - press plate body, 312 - adjusting groove, 313 - adjusting hole, 314 - abutting head, 320 - support rod, 330 - screw rod, 340 - press plate mounting seat

[0028] 400 - positioning mechanism, 410 - mounting plate, 412 - conical head positioning pin

[0029] 510 - first support pad, 520 - second support pad

[0030] 610 - first back plate reinforcing rib, 620 - second back plate reinforcing rib, 630 - third back plate reinforcing rib, 640 - clamp bottom plate DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be noted that, in this article, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. In the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as center, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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. Moreover, the terms “include”, “contain” or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement “include” do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the present application and the various features in the embodiments can be combined with each other, and are all within the protection scope of the present application.

[0032] Embodiment 1

[0033] Please refer to Figure 1The utility model embodiment provides a kind of combined machine tool fixture for engine cylinder body processing;In existing fixture, generally adopt custom-made cylinder body machine tool, to reduce the machining sequence, save cost, basically adopt the scheme of "multi-surface machine tool fixture";The scheme of existing "four-surface machine tool feeding fixture", detection reference conversion, potential thrust surface and crank hole perpendicularity serious over-limit risk;There is also the scheme of "three-surface machine tool C-type fixture", cost is high, manufacturing cycle is long, commonality is poor, and reference conversion potential quality is high risk.For the input cost of fixture is lower, use is more convenient;In the utility model, a kind of combined machine tool fixture for engine cylinder body processing is provided;Including the fixture backplate 200 of receiving engine cylinder body 100 and the pressing plate mechanism 300 for clamping engine cylinder body 100, when clamping, the engine cylinder body 100 is clamped by contact by the pressing plate mechanism 300;And a plurality of mounting holes 210 are evenly spaced on the fixture backplate 200;The mounting hole 210 at least includes ordinary screw hole and countersunk screw hole two;By the setting of mounting hole 210, the components of fixture can be disassembled and adjusted, so that the clamped cylinder is no longer single, and can adapt to the clamping operation of a variety of engine cylinder body 100.

[0034] Please see Figure 1 And Figure 3 The pressing plate mechanism 300 is detachably installed with the fixture backplate 200, so that the position of the pressing plate mechanism 300 can be adjusted to adapt to the clamping operation of engine cylinder body 100 of different models or sizes.

[0035] Please see Figure 3 And Figure 4 The pressing plate mechanism 300 includes a pressing plate 310, a support rod 320 supporting the pressing plate 310, and a screw rod 330 adjusting the extension length of the pressing plate 310.

[0036] In use, first extend the screw rod 330 into the adjusting hole 313, adjust the required clamping height, and fix the height by nut; then extend the support rod 320 into the adjusting groove 312 to support the pressing plate 310; adjust the distance between the pressing plate 310 and the engine cylinder body 100, and fix the position of the top of the screw rod 330 by nut to realize the clamping operation of the engine cylinder body 100.

[0037] Please see Figure 1, the height between the screw rod 330 and the clamp back plate 200 is adjustable; when clamping the engine cylinder body 100, at least one pair of clamping mechanisms 300 arranged on both sides of the engine cylinder body 100 are used for clamping; generally, a pair of clamping mechanisms 300 are arranged on both sides of the engine cylinder body 100 respectively; when the size of the engine cylinder body 100 is large, more than one pair of clamping mechanisms 300 can be arranged on both sides for clamping; so as to realize stable clamping operation. The clamping mechanism 300 abuts against the engine cylinder body 100 through the pressing plate 310 arranged on both sides of the engine cylinder body 100, so as to complete the clamping of the engine cylinder body 100.

[0038] In this embodiment, the whole clamp adopts a combined structure design; the accessory parts adopt standardized design and can be reused; and a small amount of non-standard parts are invested. In this way, the production cost can be greatly reduced, and the production efficiency can be improved. The combined design makes the clamp flexible to adjust according to actual needs during use, so as to meet the clamping needs of engine cylinder bodies 100 of different specifications. At the same time, the standardized design of the accessory parts not only facilitates management and maintenance, but also reduces the downtime caused by damage or loss of parts. The small amount of non-standard parts ensures the accuracy and stability of the clamp, and provides a strong guarantee for the machining of the engine cylinder body 100.

[0039] Further, please refer to Figure 3 and Figure 4 , the clamping mechanism 300 further comprises a pressing plate mounting seat 340, which provides a stable base for the installation of the pressing plate 310, the screw rod 330 and the supporting rod 320. Through the pressing plate mounting seat 340, it can be flexibly selected whether to install according to the actual working needs. In addition, the pressing plate mounting seat 340 can also provide additional height for the clamping of the cylinder body by the pressing plate 310 to adapt to cylinders of different sizes. The clamping mechanism 300 is connected and installed with the clamp back plate 200 through the pressing plate mounting seat 340, which ensures the stability and reliability of the whole mechanism. At the same time, the screw rod 330 and the supporting rod 320 are arranged on the pressing plate mounting seat 340, so that the design not only makes the structure compact, but also facilitates operation and maintenance.

[0040] Further, please refer to Figure 3 and Figure 4The pressing plate 310 structure includes a pressing plate body 311 and an abutting head 314 abutting against the engine cylinder body 100. The pressing plate body 311 is designed with specific installation grooves, which provide an accurate guide for the movement of the abutting head 314. Through this design, the abutting head 314 can correctly move along the predetermined path, ensuring that it can accurately abut against the engine cylinder body 100. Such a structural design enables the pressing plate 310 to effectively clamp the engine cylinder body 100, ensuring the stability and accuracy of the clamping process.

[0041] Further, referring to Figure 5 , it also includes a positioning mechanism 400, which is detachably installed with the clamp back plate 200 and used for positioning during the installation of the engine cylinder body 100. The positioning mechanism 400 includes an installation plate 410 installed with the clamp back plate 200 and a tapered head positioning pin 412 provided on the installation plate 410.

[0042] Referring to Figure 1 and Figure 5 , during the clamping operation of the engine cylinder body 100, the tapered head positioning pin 412 needs to be correctly installed according to the specific size of the cylinder body to ensure the accuracy of positioning. At least one pair of tapered head positioning pins 412 is required to complete the positioning work during the positioning process; this pair of positioning installation pins should be arranged at the two end positions of one side of the engine cylinder body 100. After the engine cylinder body 100 is accurately aligned with the pair of tapered head positioning pins 412 and the contact installation is completed, the next step is to install a pair of first support pads 510 and second support pads 520 at the other end of the engine cylinder body 100 to effectively support the other side of the cylinder body. Only after ensuring that the engine cylinder body 100 has been stably positioned and the bottom has been properly arranged, can the next step of installing the pressing block mechanism be performed. By installing an appropriate number of pressing block mechanisms, the accurate clamping of the engine cylinder body 100 can be achieved, ensuring the stability and reliability of the entire clamping process.

[0043] Further, referring to Figure 1 and Figure 2 , the bottom of the clamp back plate 200 is provided with a first back plate reinforcing rib 610, a second back plate reinforcing rib 620 and a third back plate reinforcing rib 630 on both sides and one end. The other end of the clamp back plate 200 is provided with a clamp bottom plate 640; the clamp bottom plate 640 is detachably connected with the first back plate reinforcing rib 610, the second back plate reinforcing rib 620 and the clamp back plate 200, respectively.

[0044] The main role of the first back plate stiffener 610, the second back plate stiffener 620 and the third back plate stiffener 630 is to enhance the structural strength and rigidity of the clamp back plate 200, ensuring that the clamp can withstand the weight of the engine block 100 and the vibration and cutting force generated during processing.

[0045] Please refer to Figure 1 and Figure 2 The stiffener effectively prevents the clamp back plate 200 from deforming or bending when stressed by increasing the thickness and support points of the clamp back plate 200, thereby ensuring the stability of the engine block 100 during processing. During processing, the clamp back plate 200 will be subjected to multiple stresses from the pressing plate mechanism 300, the positioning mechanism 400 and the engine block 100. The stiffener can evenly distribute these stresses, avoiding damage or deformation caused by local stress concentration. The engine block 100 will vibrate during processing, and the stiffener can effectively reduce the impact of vibration on the clamp back plate 200, improving processing accuracy and the service life of the clamp.

[0046] The stiffener is connected to the clamp bottom plate 640, further enhancing the overall structural stability of the clamp, ensuring that the clamp remains stable during installation and use.

[0047] Please refer to Figure 1 and Figure 2 The first back plate stiffener 610, the second back plate stiffener 620 and the third back plate stiffener 630 enhance the rigidity of the clamp back plate 200, disperse stress, reduce the impact of vibration and support the clamp bottom plate 640, ensuring the stability and reliability of the clamp during processing of the engine block 100.

[0048] Further, the pressing plate mechanism 300, the positioning mechanism 400, the first support pad 510, the second support pad 520, the first back plate stiffener 610, the second back plate stiffener 620, the third back plate stiffener 630 and the clamp bottom plate 640 are connected by detachable connection to form a combined assembly clamp.

[0049] In this embodiment, through detachable connection, the clamp can quickly adjust the position of the pressing plate mechanism 300, the positioning mechanism 400 and the support pad according to the size and shape of different engine blocks 100, thereby adapting to the processing needs of various products and modular design: each component can be replaced or adjusted individually, without the need to redesign or manufacture the entire clamp, improving the flexibility and scope of application of the clamp.

[0050] Traditional single product dedicated fixture needs to be designed and manufactured separately for each engine cylinder body 100, while the combined fixture can meet the needs of multiple products by adjusting and reorganizing, reducing the number of dedicated fixtures. Save material cost: detachable design allows repeated use of common parts of the fixture (such as fixture back plate 200, reinforcing rib, etc.), reducing material waste.

[0051] If a component (such as a pressing plate 310, a support pad, or a positioning mechanism 400) is damaged, only the component needs to be replaced, without replacing the entire fixture, reducing maintenance costs and time.

[0052] As the processing needs change, the performance of the fixture can be improved by replacing or upgrading some components without re-manufacturing the entire fixture.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A combined machining fixture for machining engine cylinder blocks, characterized in that, It includes a clamp back plate (200) for receiving the engine cylinder block (100) and a pressure plate mechanism (300) for clamping the engine cylinder block (100); the clamp back plate (200) is provided with a plurality of mounting holes (210) at uniform intervals. The pressure plate mechanism (300) is detachably installed with the fixture back plate (200); the pressure plate mechanism (300) includes a pressure plate (310), a support rod (320) supporting the pressure plate (310), and a screw (330) for adjusting the extension length of the pressure plate (310); the height between the screw (330) and the fixture back plate (200) is adjustable; When clamping the engine cylinder block (100), at least one pair of pressure plate mechanisms (300) provided on both sides of the engine cylinder block (100) are used for clamping; the pressure plate mechanism (300) abuts against the engine cylinder block (100) by the pressure plate (310) provided on both sides of the engine cylinder block (100) to complete the clamping of the engine cylinder block (100).

2. The combined machining fixture for machining engine cylinder blocks according to claim 1, characterized in that, The pressure plate mechanism (300) further includes a pressure plate mounting base (340); the pressure plate mechanism (300) is mounted to the fixture back plate (200) through the pressure plate mounting base (340); the screw (330) and the support rod (320) are both disposed on the pressure plate mounting base (340).

3. The combined machining fixture for machining engine cylinder blocks according to claim 1, characterized in that, The pressure plate (310) includes a pressure plate body (311) and an abutment joint (314) that abuts against the engine cylinder block (100).

4. A combined machining fixture for machining engine cylinder blocks according to claim 3, characterized in that, The pressure plate body (311) is provided with an adjustment groove (312) and an adjustment hole (313) communicating with the adjustment groove (312); one end of the support rod (320) is located in the adjustment groove (312); one end of the screw (330) is located in the adjustment hole (313), and the extension length of the pressure plate (310) can be adjusted based on the adjustment hole (313).

5. A combined machining fixture for machining engine cylinder blocks according to claim 1, characterized in that, It also includes a positioning mechanism (400); the positioning mechanism (400) is detachably installed with the clamp back plate (200) and is used for positioning when the engine block (100) is installed.

6. A combined machining fixture for machining engine cylinder blocks according to claim 5, characterized in that, The positioning mechanism (400) includes a mounting plate (410) mounted to the fixture back plate (200) and a conical positioning pin (412) disposed on the mounting plate (410).

7. A combined machining fixture for machining engine cylinder blocks according to claim 6, characterized in that, One side of the bottom of the engine cylinder block (100) is supported by the positioning mechanism (400), and the other side is supported by the first support pad (510) and the second support pad (520) provided at both ends of the engine cylinder block (100).

8. A combined machining fixture for machining engine cylinder blocks according to claim 1, characterized in that, The bottom of the clamp back plate (200) is provided with a first back plate reinforcing rib (610), a second back plate reinforcing rib (620) and a third back plate reinforcing rib (630) on both sides and one end respectively.

9. A combined machining fixture for machining engine cylinder blocks according to claim 8, characterized in that, The other end of the clamp back plate (200) is provided with a clamp base plate (640); the clamp base plate (640) is detachably connected to the first back plate reinforcing rib (610), the second back plate reinforcing rib (620) and the clamp back plate (200).

10. A combined machining fixture for machining engine cylinder blocks according to any one of claims 1-9, characterized in that, The pressure plate mechanism (300), positioning mechanism (400), first support pad (510), second support pad (520), first back plate reinforcing rib (610), second back plate reinforcing rib (620), third back plate reinforcing rib (630) and fixture base plate (640) are all detachably connected to form a combined assembly fixture.

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