A cylinder machining top pressing mechanism and clamping table

Abstract

The utility model relates to the technical field of engine manufacturing, especially a kind of jacking mechanism and clamping table for cylinder body processing, including linear output module, still including jack rod, ball head and top silk, wherein, the jack rod is detachably arranged in the output end front end of linear output module, and its front end is provided with ball groove;The ball head is rotatably arranged in the ball groove, and its front side protrudes the front end of jack rod, and is provided with the abutting surface for being bonded with the side end face of cylinder body;The rear side of ball head is equipped with limit plane;The top silk is screwed in the rear end of jack rod, and its front end is inserted into the ball groove, and is close to the limit plane, for limiting the rotation amplitude of ball head.The utility model jacking mechanism is provided with the abutting surface that can float in the output shaft front end of linear output module, to automatically adjust bonding angle according to the actual state of the side end face of cylinder body, to effectively eliminate the contact bad phenomenon caused by shape error.

Description

Technical Field

[0001] This utility model relates to the field of engine manufacturing technology, and in particular to a clamping mechanism and clamping table for cylinder block machining. Background Technology

[0002] In engine manufacturing, the cylinder block is one of the key core components, and its machining accuracy directly affects the overall performance, assembly quality, and operational stability of the engine. To ensure accurate positioning and stable clamping of the cylinder block during machining, it is usually necessary to use a special fixture to firmly fix it to the machine tool table.

[0003] In existing cylinder block clamps, the clamping mechanism mostly adopts a cylinder-driven structure, specifically including a cylinder body and a top plate fixed to the front end of the cylinder output shaft. The cylinder movement drives the top plate to move, thereby clamping and fixing the side end face of the cylinder block. For example, Chinese utility model patent with publication number CN222945282U discloses a locking device for engine cylinder block machining, which also uses a similar clamping structure.

[0004] However, in actual manufacturing processes, due to machining errors or limitations in cylinder block structural design, the side end face of the cylinder block often exhibits a certain degree of tilt. In this case, the top plate in a traditional clamping mechanism cannot adapt well to this surface change, resulting in an angle between the top plate's abutting surface and the cylinder block's side end face, leading to poor contact and affecting the fixing effect. Furthermore, due to the small contact area and stress concentration, the top plate is also prone to leaving indentations on the cylinder block's side end face, causing cosmetic defects and even affecting subsequent assembly accuracy, thereby reducing product quality. Utility Model Content

[0005] In view of this, the present invention proposes a clamping mechanism and clamping table for cylinder block processing. The clamping mechanism is provided with a floating abutment surface at the front end of the output shaft of the linear output module, so as to automatically adjust the contact angle according to the actual state of the cylinder block side end face, thereby effectively eliminating the poor contact phenomenon caused by shape and position errors, and effectively solving the problems of poor contact, unstable clamping and easy damage to products that exist in traditional cylinder block clamps when clamping cylinder blocks.

[0006] The technical solution of this utility model is implemented as follows:

[0007] On the one hand, this utility model provides a clamping mechanism for cylinder block machining, including a linear output module, and further including a push rod, a ball head, and a push screw, wherein,

[0008] The push rod is detachably mounted at the front end of the output end of the linear output module, and a ball groove is provided at its front end;

[0009] The ball head is rotatably disposed in the ball groove, and its front side protrudes from the front end of the push rod, and is provided with a support surface for fitting against the side end face of the cylinder body; a limiting plane is provided on the rear side of the ball head;

[0010] The set screw is screwed to the rear end of the push rod, and its front end extends into the ball groove and is close to the limiting plane to limit the rotation range of the ball head.

[0011] Based on the above technical solutions, preferably, the linear output module is a pneumatic cylinder or a hydraulic cylinder.

[0012] Based on the above technical solutions, preferably, the front end of the output terminal of the linear output module has a threaded hole, and the rear end of the push rod has a threaded rod-like structure, wherein...

[0013] The threaded rod-like structure engages with the threaded hole.

[0014] Based on the above technical solutions, preferably, the top rod has a shackle groove on its side.

[0015] Based on the above technical solutions, preferably, the opening depth of the threaded hole is greater than the axial length of the threaded rod-like structure.

[0016] Based on the above technical solutions, preferably, the rear end of the push rod is provided with a through hole, wherein...

[0017] The through hole is connected to the ball groove;

[0018] The through hole has an internal thread on its wall, which engages with the set screw thread.

[0019] Based on the above technical solutions, preferably, the central axis of the through hole passes through the center of the ball groove.

[0020] Based on the above technical solutions, preferably, the limiting plane is parallel to the abutting surface.

[0021] Based on the above technical solutions, preferably, the ball head is a metal ball.

[0022] On the other hand, this utility model also provides a clamping table for cylinder block machining, including the above-mentioned clamping mechanism, and further including a base and a vertical plate, wherein,

[0023] Each of the two upright plates is fixed on one side of the top of the base, and several clamping mechanisms are provided on the opposite sides of the two upright plates.

[0024] The clamping mechanism and clamping table for cylinder block machining of this utility model have the following advantages over the prior art:

[0025] (1) A floating support structure is formed by setting a ball groove at the front end of the push rod and rotatably embedding the ball head in the ball groove. At the same time, the rotation range of the ball head is limited by the cooperation of the push screw and the limiting plane. This allows the support surface of the ball head to automatically adjust the contact angle according to the actual state of the cylinder side end face, effectively eliminating the contact problems caused by shape and position errors, achieving good fit, and improving clamping stability and positioning accuracy. In addition, the floating structure also makes the contact stress distribution more uniform, significantly reducing indentation damage to the cylinder surface, thereby improving product quality.

[0026] (2) A threaded rod structure at the rear end of the push rod engages with the threaded hole, facilitating quick replacement of the push rod to meet the machining requirements of different cylinder block models. A shackle groove is provided on the side of the push rod, making disassembly and assembly easier with tools, thus improving maintenance efficiency. Simultaneously, the depth of the threaded hole is greater than the axial length of the threaded rod structure, preventing interference between the rear end of the push screw and the threaded hole, ensuring the push screw can be freely adjusted axially, guaranteeing precise control of the ball head's limiting position, and further enhancing the stability and reliability of the clamping mechanism.

[0027] (3) By setting a through hole coaxial with the rear end of the push rod, and the central axis of the through hole passing through the center of the ball groove, it is ensured that the force of the push screw is transmitted along the center of the ball, and the force distribution is more reasonable. At the same time, the limiting plane and the supporting surface remain parallel, so that the ball head is stable in the limiting state and prevents the risk of failure due to excessive deflection. The synergistic effect of the above structures not only improves the force balance during the clamping process, but also helps to extend the service life of the mechanism and improve the overall clamping effect. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a perspective view of a clamping table for cylinder block machining according to the present invention;

[0030] Figure 2 This is a perspective view of a clamping mechanism for cylinder block machining according to the present invention;

[0031] Figure 3 This is a partial sectional view of the push rod section;

[0032] Figure 4 This is a schematic diagram of the structure after the set screw abuts against the limiting plane;

[0033] In the diagram: 1. Linear output module; 2. Push rod; 3. Ball head; 4. Push screw; 5. Base; 6. Vertical plate; 41. Screw part; 42. Smooth rod part; 101. Threaded hole; 201. Ball groove; 202. Shackle groove; 203. Through hole; 301. Supporting surface; 302. Limiting plane. Detailed Implementation

[0034] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] like Figure 1-4 As shown, the present invention provides a clamping mechanism for cylinder block machining, including a linear output module 1, a push rod 2, a ball head 3, and a push screw 4.

[0036] The push rod 2 is detachably mounted at the front end of the output end of the linear output module 1, and its front end has a ball groove 201. The ball head 3 is rotatably mounted in the ball groove 201, and its front side protrudes from the front end of the push rod 2, and has a bearing surface 301 for contacting the side end face of the cylinder. A limiting plane 302 is provided on the rear side of the ball head 3. The set screw 4 is screwed to the rear end of the push rod 2, and its front end extends into the ball groove 201 and is close to the limiting plane 302, for limiting the rotation range of the ball head 3.

[0037] A floating support structure is formed by setting a ball groove 201 at the front end of the push rod 2 and rotatably embedding the ball head 3 in the ball groove 201. The ball head 3 is a metal ball made of copper or aluminum, and the inner surface of the ball groove 201 is provided with a wear-resistant layer, which is obtained through carburizing, nitriding, hard anodizing, or chrome plating. Simultaneously, the rotation range of the ball head 3 is limited by the engagement of the push screw 4 and the limiting plane 302, allowing the support surface 301 of the ball head 3 to automatically adjust the contact angle according to the actual state of the cylinder side face. This effectively eliminates poor contact problems caused by shape and position errors, achieving good fit and improving clamping stability and positioning accuracy. Furthermore, the floating structure makes the contact stress distribution more uniform, significantly reducing indentation damage to the cylinder surface, thereby improving product quality.

[0038] In the above-mentioned floating support structure, the distance between the set screw 4 and the limiting plane 302 directly affects the rotatable range of the ball head 3.

[0039] Specifically, the set screw 4 is a threaded rod-shaped structure with flat end faces at both ends. One end has a polygonal countersunk hole, which, in conjunction with a wrench, allows the set screw 4 to be tightened. When the set screw 4 is tightened until its front end is completely removed from the ball groove 201, it no longer restricts the limiting plane 302, and the ball head 3's rotation range reaches its maximum. In this state, the ball head 3 can rotate freely. When the front end of the set screw 4 abuts against the limiting plane 302, the ball head 3's rotation range is zero, meaning it can no longer rotate. This state is suitable for situations requiring strict control of the ball head 3's position, ensuring stability and accuracy during clamping. In practical applications, adjusting the gap between the set screw 4 and the limiting plane 302 to a suitable size, such as 2mm, ensures that the ball head 3 has a certain floating capability while avoiding excessive oscillation that could affect clamping stability, thus achieving good adaptability and clamping reliability.

[0040] In the aforementioned clamping mechanism for cylinder block machining, the push rod 2, ball head 3, and push screw 4 together constitute a floating clamping assembly. The linear output module 1 used to drive the translation of this assembly adopts either a pneumatic cylinder or a hydraulic cylinder. That is, the linear output module 1 can drive the clamping assembly to translate linearly and reciprocate in a pneumatic manner, or it can drive the clamping assembly to translate linearly and reciprocate in a hydraulic manner, thereby adapting to different working environments and clamping requirements.

[0041] In this mechanism, the front end of the output end of the linear output module 1 is provided with a threaded hole 101, and the rear end of the push rod 2 is a threaded rod structure. This threaded rod structure is threadedly engaged with the threaded hole 101, thereby realizing the quick installation and disassembly of the push rod 2, which is convenient for replacement according to different models of cylinders and improves the versatility and flexibility of the fixture.

[0042] To improve the efficiency of disassembly and assembly and the convenience of maintenance of the push rod 2, a shackle groove 202 is provided on the side of the push rod 2. The shackle groove 202 is a planar structure, and multiple grooves are arranged in a circular array along the circumference of the push rod 2. In actual use, a wrench or other tools can be used in conjunction with the shackle groove 202 to easily apply a rotational torque to the push rod 2, thereby significantly improving the efficiency of installation and disassembly of the push rod 2 and enhancing the ease of operation.

[0043] Furthermore, the opening depth of the threaded hole 101 is greater than the axial length of the threaded rod structure. That is, after the push rod 2 is fixedly installed, its rear end does not contact the bottom of the threaded hole 101, and there is a clearance space between them to ensure that the rear end of the push screw 4 will not interfere with the bottom of the threaded hole 101. This ensures that the push screw 4 can be freely adjusted axially to extend into the ball groove 201, thereby achieving precise control of the limiting amplitude of the ball head 3 and further improving the stability and reliability of the above-mentioned tightening mechanism.

[0044] In the aforementioned clamping mechanism for cylinder block machining, the rear end of the push rod 2 is provided with a through hole 203, which communicates with the ball groove 201. An internal thread is provided on the wall of the through hole 203, which matches the thread on the outer circumference of the push screw 4 to form a thread engagement structure, enabling the push screw 4 to be adjusted in axial direction.

[0045] Furthermore, the central axis of the through hole 203 passes through the center of the ball groove 201, ensuring that the force applied by the set screw 4 is transmitted along the center of the ball head 3, thereby achieving a more reasonable force distribution. At the same time, the limiting plane 302 and the supporting surface 301 remain parallel to each other, so that the ball head 3 can maintain a stable posture when limited by the set screw 4, preventing the risk of failure due to excessive deflection angle.

[0046] Through the synergistic effect of the above structures, not only is the force transmission balance improved during the clamping process, but local stress concentration is also effectively reduced, which helps to extend the service life of the mechanism and improve the overall clamping stability and reliability.

[0047] Furthermore, to prevent inconvenience in adjusting the set screw 4 when the ball head and the setter rod 2 are jammed, the set screw 4 is designed as a two-section structure. Specifically, the set screw 4 consists of a screw section 41 and a smooth section 42. The screw section 41 is used to connect to the through hole 203, and its rear end has a hexagonal countersunk groove for use when the Allen wrench is loosened. Its front end is rotatably connected to the rear end of the smooth section 42. The smooth section 42 has no threaded structure on its surface and is axially slidably disposed in the through hole 203. Its front end is used to limit the movement of the ball head 3. Figure 4 As shown, the rear end of the smooth rod part 42 is provided with a T-shaped column structure, and the front end of the screw part 41 is provided with a T-shaped groove structure. The T-shaped column structure is fitted into the T-shaped groove structure and rotates to achieve a rotational connection between the screw part 41 and the smooth rod part 42.

[0048] The aforementioned clamping mechanism is applied to a clamping table for cylinder block processing. The clamping table also includes a base 5 and a vertical plate 6. Each vertical plate 6 is fixed on one side of the top of the base 5, and several clamping mechanisms are provided on the opposite sides of the two vertical plates 6.

[0049] When clamping the cylinder, the cylinder to be processed is first placed between the two vertical plates 6 and stably positioned on top of the base 5. Then, the linear output module 1 drives the clamping assembly to move in a straight line, causing the abutment surface 301 at the front end of the ball head 3 to contact the side end face of the cylinder and apply clamping force. Under the combined action of the clamping mechanisms on both sides, the cylinder is stably clamped and fixed, thereby achieving high-precision positioning and reliable clamping, meeting the requirements of subsequent processing techniques.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping mechanism for cylinder block machining, comprising a linear output module (1), characterized in that: It also includes a push rod (2), a ball head (3), and a set screw (4), among which, The top rod (2) is detachably disposed at the front end of the output end of the linear output module (1), and a ball groove (201) is provided at its front end. The ball head (3) is rotatably disposed in the ball groove (201), and its front side protrudes from the front end of the push rod (2), and is provided with a support surface (301) for fitting with the side end face of the cylinder; the ball head (3) is provided with a limiting plane (302) on its rear side. The set screw (4) is screwed to the rear end of the set rod (2), and its front end extends into the ball groove (201) and is close to the limiting plane (302) to limit the rotation amplitude of the ball head (3).

2. The clamping mechanism for cylinder block machining as described in claim 1, characterized in that: The linear output module (1) is a pneumatic cylinder or a hydraulic cylinder.

3. The clamping mechanism for cylinder block machining as described in claim 1, characterized in that: The output end of the linear output module (1) has a threaded hole (101) at its front end, and the rear end of the push rod (2) has a threaded rod-like structure. The threaded rod-like structure engages with the threaded hole (101).

4. The clamping mechanism for cylinder block machining as described in claim 3, characterized in that: The top rod (2) is provided with a shackle groove (202) on its side.

5. The clamping mechanism for cylinder block machining as described in claim 3, characterized in that: The opening depth of the threaded hole (101) is greater than the axial length of the threaded rod structure.

6. The clamping mechanism for cylinder block machining as described in claim 1, characterized in that: The rear end of the top rod (2) is provided with a through hole (203), wherein, The through hole (203) is connected to the ball groove (201); The through hole (203) has an internal thread on its wall, and the internal thread engages with the set screw (4).

7. The clamping mechanism for cylinder block machining as described in claim 6, characterized in that: The central axis of the through hole (203) passes through the center of the ball groove (201).

8. The clamping mechanism for cylinder block machining as described in claim 1, characterized in that: The limiting plane (302) is parallel to the abutting surface (301).

9. A clamping mechanism for cylinder block machining as described in claim 1, characterized in that: The ball head (3) is a metal ball.

10. A clamping table for cylinder block machining, characterized in that: Including the clamping mechanism as described in any one of claims 1-9, it further includes a base (5) and a vertical plate (6), wherein, Each of the two upright plates (6) is fixed on one side of the top of the base (5), and several clamping mechanisms are provided on the opposite sides of the two upright plates (6).

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