A positioning fixture for cylinder head machining

Abstract

This utility model discloses a positioning fixture for cylinder head machining, relating to the field of cylinder head machining technology, including a concave connecting seat, a positioning support seat, and two transverse clamping cylinders. The positioning support seat provides support for the placement of the cylinder head, and the two transverse clamping cylinders extend to clamp the sides of the cylinder head. Two sets of transverse rolling components are arranged between the two positioning support seats, and a longitudinal rolling component is arranged between the two sets of transverse rolling components. The transverse rolling components provide moving support for the horizontal centering adjustment of the cylinder head, and the longitudinal rolling component provides moving support for the cylinder head to move above the positioning support seat. This utility model, by setting the longitudinal and transverse rolling components, enables the movement and adjustment of the cylinder head, effectively reducing the moving resistance during the centering adjustment of the cylinder head, making the positioning, centering, and clamping operation of the cylinder head easier and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head processing technology, specifically a positioning fixture for cylinder head processing. Background Technology

[0002] The cylinder head, or simply "cylinder head," is a crucial component of an internal combustion engine (gasoline or diesel). It is located at the top of the engine cylinder block and is tightly fixed to the cylinder block by a cylinder head gasket, together forming the core working space of the engine.

[0003] When machining cylinder heads (e.g., grinding, cutting), they need to be clamped and fixed using tooling fixtures. Generally, four cylinders drive clamping blocks to clamp the cylinder head around its perimeter. However, when the cylinder head is placed in the middle of the four clamping blocks, it is not easy to center it. When the clamping blocks clamp the cylinder head, the cylinder head that is not centered will move to the center under the action of clamping force. However, due to the heavy weight of the cylinder head, the movement resistance is large. Based on this, a positioning tooling for cylinder head machining is provided. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for cylinder head machining in order to solve the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning fixture for cylinder head processing, comprising an inverted concave connecting seat, wherein two positioning support seats are symmetrically fixed on the top of the inverted concave connecting seat, and two transverse clamping cylinders are symmetrically installed on the side of the inverted concave connecting seat away from each other. The positioning support seats are used to provide support for the placement of the cylinder head, and the two transverse clamping cylinders extend to clamp the two sides of the cylinder head.

[0006] Two sets of transverse rolling components are provided between the two positioning support seats, and a longitudinal rolling component is provided between the two sets of transverse rolling components.

[0007] The lateral rolling assembly is used to provide moving support for the horizontal lateral centering adjustment of the cylinder head;

[0008] The longitudinal rolling assembly is used to provide moving support for the cylinder head to move above the positioning support.

[0009] As a further embodiment of this utility model: the longitudinal rolling assembly includes a longitudinal lifting roller conveyor belt, a limiting back plate, a second vertical cylinder, and a longitudinal fixed roller conveyor belt;

[0010] The longitudinal lifting roller conveyor belt is distributed above the middle part of the concave connecting seat. The second vertical cylinder is installed at the bottom of the middle part of the concave connecting seat, and the output end of the second vertical cylinder passes through the concave connecting seat and is fixedly connected to the bottom of the support of the longitudinal lifting roller conveyor belt. The lifting operation of the longitudinal lifting roller conveyor belt is realized by the lifting operation of the second vertical cylinder.

[0011] The longitudinal fixed roller conveyor belt is distributed in front of the longitudinal lifting roller conveyor belt and is fixed by an external bracket. When the longitudinal lifting roller conveyor belt is at its highest position, it is flush with the longitudinal fixed roller conveyor belt. The longitudinal fixed roller conveyor belt and the longitudinal lifting roller conveyor belt are used to provide support and guidance for the cylinder head to move above the positioning support seat.

[0012] The limiting back plate is fixed to the rear end of the longitudinal lifting roller conveyor belt bracket and is used to limit the movement of the cylinder head above the positioning support.

[0013] As a further embodiment of this utility model: a notch is provided in the middle of one end of the longitudinal lifting roller conveyor belt near the longitudinal fixed roller conveyor belt, and a longitudinal clamping cylinder is installed on the top of the inverted concave connecting seat directly below the notch.

[0014] When the longitudinal lifting roller conveyor belt moves down to its lowest position, the front and rear ends of the cylinder head are clamped by the extension of the longitudinal clamping cylinder and the cooperation of the limiting back plate.

[0015] As a further embodiment of this utility model: the transverse rolling assembly includes a transverse roller conveyor belt and a first vertical cylinder;

[0016] The transverse roller conveyor belt is located above the center of the concave connecting seat and between the longitudinal lifting roller conveyor belt and the positioning support seat.

[0017] The first vertical cylinder is installed at the bottom center of the concave connecting seat, and the output end of the first vertical cylinder passes through the concave connecting seat and is fixedly connected to the bottom of the support of the transverse roller conveyor belt.

[0018] When the cylinder head is lowered to the top of the transverse roller conveyor by the longitudinal lifting roller conveyor belt, the cylinder head is pre-clamped by the extension of two transverse clamping cylinders to achieve the centering movement of the cylinder head.

[0019] As a further embodiment of this utility model: the upper surface of the longitudinal lifting roller conveyor belt in its highest state is higher than the upper surface of the transverse roller conveyor belt in its highest state, and the upper surface of the transverse roller conveyor belt in its highest state is higher than the upper surface of the positioning support.

[0020] In its lowest position, the upper surface of the longitudinal lifting roller conveyor belt and the transverse roller conveyor belt is at a lower level than the upper surface of the positioning support.

[0021] As a further improvement of this utility model: when the longitudinal lifting roller conveyor belt is in its lowest state, the top horizontal height of the limiting back plate is higher than the upper surface horizontal height of the transverse roller conveyor belt.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] By setting up longitudinal and lateral rolling components, the cylinder head can be moved and adjusted, effectively reducing the moving resistance when adjusting the cylinder head to center, making the positioning and centering clamping operation of the cylinder head easier and more convenient. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention after removing the longitudinal fixed roller conveyor belt;

[0026] Figure 3 This is a schematic diagram of the longitudinal lifting roller conveyor belt of this utility model in the descending state;

[0027] Figure 4 This is a schematic diagram of the longitudinal lifting roller conveyor belt and the transverse roller conveyor belt in the descending state of this utility model.

[0028] In the diagram: 1. Inverted concave connecting seat; 2. Positioning support seat; 3. Transverse rolling assembly; 301. Transverse roller conveyor belt; 302. First vertical cylinder; 4. Longitudinal rolling assembly; 401. Longitudinal lifting roller conveyor belt; 402. Limiting back plate; 403. Notch; 404. Second vertical cylinder; 405. Longitudinal fixed roller conveyor belt; 5. Longitudinal clamping cylinder; 6. Transverse clamping cylinder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-4In this embodiment of the present invention, a positioning fixture for cylinder head processing includes an inverted concave connecting seat 1. Two positioning support seats 2 are symmetrically fixed on the top of the inverted concave connecting seat 1. Two transverse clamping cylinders 6 are symmetrically installed on the side of the inverted concave connecting seat 1 away from each other. The positioning support seats 2 are used to provide support for the placement of the cylinder head. The two transverse clamping cylinders 6 extend to clamp the two sides of the cylinder head.

[0031] Two sets of transverse rolling components 3 are provided in the middle of the two positioning support seats 2, and a longitudinal rolling component 4 is provided in the middle of the two sets of transverse rolling components 3. The transverse rolling components 3 are used to provide moving support for the horizontal lateral centering adjustment of the cylinder head, and the longitudinal rolling component 4 is used to provide moving support for the cylinder head to move above the positioning support seat 2.

[0032] The longitudinal rolling assembly 4 includes a longitudinal lifting roller conveyor belt 401, a limiting back plate 402, a second vertical cylinder 404, and a longitudinal fixed roller conveyor belt 405;

[0033] The longitudinal lifting roller conveyor belt 401 is distributed above the middle part of the concave connecting seat 1. The second vertical cylinder 404 is installed at the bottom middle part of the concave connecting seat 1, and the output end of the second vertical cylinder 404 passes through the concave connecting seat 1 and is fixedly connected to the bottom end of the bracket of the longitudinal lifting roller conveyor belt 401. The lifting operation of the longitudinal lifting roller conveyor belt 401 is realized by the lifting operation of the second vertical cylinder 404.

[0034] The longitudinal fixed roller conveyor belt 405 is located in front of the longitudinal lifting roller conveyor belt 401 and is fixed by an external bracket. When the longitudinal lifting roller conveyor belt 401 is at its highest position, it is flush with the longitudinal fixed roller conveyor belt 405. The longitudinal fixed roller conveyor belt 405 and the longitudinal lifting roller conveyor belt 401 are used to provide support and guidance for the cylinder head to move above the positioning support seat 2.

[0035] The limiting back plate 402 is fixed to the rear end of the longitudinal lifting roller conveyor belt 401 bracket, and the limiting back plate 402 is used to limit the cylinder head that moves to the position support 2.

[0036] A notch 403 is provided in the middle of one end of the longitudinal lifting roller conveyor belt 401 near the longitudinal fixed roller conveyor belt 405. A longitudinal clamping cylinder 5 is installed on the top of the concave connecting seat 1 directly below the notch 403. When the longitudinal lifting roller conveyor belt 401 moves down to the lowest position, the front and rear ends of the cylinder head are clamped by the extension of the longitudinal clamping cylinder 5 and in conjunction with the limiting back plate 402.

[0037] The transverse rolling assembly 3 includes a transverse roller conveyor belt 301 and a first vertical cylinder 302;

[0038] The transverse roller conveyor belt 301 is located above the center of the concave connecting seat 1 and between the longitudinal lifting roller conveyor belt 401 and the positioning support seat 2.

[0039] The first vertical cylinder 302 is installed at the bottom middle part of the concave connecting seat 1, and the output end of the first vertical cylinder 302 passes through the concave connecting seat 1 and is fixedly connected to the bottom end of the bracket of the transverse roller conveyor belt 301.

[0040] When the cylinder head is lowered to the top of the transverse roller conveyor belt 301 by the longitudinal lifting roller conveyor belt 401, the cylinder head is pre-clamped by the extension of two transverse clamping cylinders 6 to achieve the centering movement of the cylinder head.

[0041] The upper surface of the longitudinal lifting roller conveyor belt 401 in its highest state is higher than the upper surface of the transverse roller conveyor belt 301 in its highest state, and the upper surface of the transverse roller conveyor belt 301 in its highest state is higher than the upper surface of the positioning support 2.

[0042] The horizontal height of the upper surface of the longitudinal lifting roller conveyor belt 401 and the transverse roller conveyor belt 301 in the lowest position is lower than the horizontal height of the upper surface of the positioning support 2.

[0043] In this embodiment, it should be noted that the concave connecting seat 1 is installed on the machining moving platform of the lathe, and its longitudinal fixed roller conveyor belt 405 is fixed to the outside of the lathe by the bracket and extends into the inside of the lathe. When the machining moving platform is in the initial position, the fixed roller conveyor belt 405 and the longitudinal lifting roller conveyor belt 401 are aligned longitudinally.

[0044] When clamping and positioning the cylinder head, place the cylinder head on the roller of the longitudinal fixed roller conveyor belt 405, and manually push the cylinder head towards the longitudinal lifting roller conveyor belt 401, so that the cylinder head moves above the longitudinal lifting roller conveyor belt 401 and is finally limited by the limiting back plate 402. At this time, the cylinder head is located above the transverse roller conveyor belt 301 and the positioning support seat 2, realizing the initial longitudinal positioning of the cylinder head.

[0045] Then, the second vertical cylinder 404 is activated to retract, and the longitudinal lifting roller conveyor belt 401 moves down to the lowest position. During this process, the cylinder head is placed on the transverse roller conveyor belt 301, and the longitudinal lifting roller conveyor belt 401 separates from the cylinder head.

[0046] Then, the two transverse clamping cylinders 6 are started simultaneously. The two transverse clamping cylinders 6 extend synchronously and clamp and push the cylinder head, so that the two cylinder heads move to the center. During this process, the roller of the transverse roller conveyor belt 301 rotates, which can effectively reduce the moving resistance of the cylinder head.

[0047] After the cylinder head is centered, the transverse clamping cylinder 6 is reset and operated. Then, the first vertical cylinder 302 is activated to retract it, and the transverse roller conveyor belt 301 moves down to the lowest position. At this time, the cylinder head is placed on the positioning support seat 2.

[0048] Finally, the transverse clamping cylinder 6 is activated again, and the longitudinal clamping cylinder 5 is activated. The longitudinal clamping cylinder 5 cooperates with the limiting back plate 402 to clamp the front and rear ends of the cylinder head. The two transverse clamping cylinders 6 clamp the cylinder head on both sides, thereby completing the positioning and clamping of the cylinder head.

[0049] After the cylinder head is processed, the first vertical cylinder 302 and the second vertical cylinder 404 are reverse-started to reset the transverse roller conveyor belt 301 and the longitudinal lifting roller conveyor belt 401 to their initial state, and the lathe's processing moving platform is reset to its initial position. At this time, the cylinder head can be easily removed by the longitudinal lifting roller conveyor belt 401 and the longitudinal fixed roller conveyor belt 405.

[0050] Please refer to this carefully. Figures 1-4 When the longitudinal lifting roller conveyor belt 401 is in its lowest state, the top horizontal height of the limiting back plate 402 is higher than the upper surface horizontal height of the transverse roller conveyor belt 301.

[0051] In this embodiment: This structure allows the limiting back plate 402 to always limit the rear end of the cylinder head, and in conjunction with the longitudinal clamping cylinder 5, it can achieve front and rear end limiting clamping of the cylinder head.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for cylinder head machining, comprising a concave connecting seat (1), characterized in that, The top of the concave connecting seat (1) is symmetrically fixed with two positioning support seats (2). The concave connecting seat (1) is symmetrically equipped with two transverse clamping cylinders (6) on the side away from each other. The positioning support seats (2) are used to provide support for the placement of the cylinder head. The two transverse clamping cylinders (6) extend to clamp the two sides of the cylinder head. Two sets of transverse rolling components (3) are provided between the two positioning support seats (2), and a longitudinal rolling component (4) is provided between the two sets of transverse rolling components (3). The lateral rolling assembly (3) is used to provide moving support for the horizontal lateral centering adjustment of the cylinder head; The longitudinal rolling assembly (4) is used to provide moving support for the cylinder head to move above the positioning support (2).

2. The positioning fixture for cylinder head machining according to claim 1, characterized in that, The longitudinal rolling assembly (4) includes a longitudinal lifting roller conveyor belt (401), a limiting back plate (402), a second vertical cylinder (404), and a longitudinal fixed roller conveyor belt (405). The longitudinal lifting roller conveyor belt (401) is distributed above the middle part of the concave connecting seat (1). The second vertical cylinder (404) is installed at the bottom middle part of the concave connecting seat (1), and the output end of the second vertical cylinder (404) passes through the concave connecting seat (1) and is fixedly connected to the bottom end of the support of the longitudinal lifting roller conveyor belt (401). The lifting operation of the longitudinal lifting roller conveyor belt (401) is realized by the lifting operation of the second vertical cylinder (404). The longitudinal fixed roller conveyor belt (405) is distributed in front of the longitudinal lifting roller conveyor belt (401) and fixed by an external bracket. When the longitudinal lifting roller conveyor belt (401) is at its highest position, it is flush with the longitudinal fixed roller conveyor belt (405). The longitudinal fixed roller conveyor belt (405) and the longitudinal lifting roller conveyor belt (401) are used to provide support and guidance for the cylinder head to move above the positioning support seat (2). The limiting back plate (402) is fixed to the rear end of the longitudinal lifting roller conveyor belt (401) bracket and is used to limit the cylinder head that moves above the positioning support (2).

3. The positioning fixture for cylinder head machining according to claim 2, characterized in that, The longitudinal lifting roller conveyor belt (401) has a notch (403) in the middle of one end near the longitudinal fixed roller conveyor belt (405). The top of the inverted concave connecting seat (1) is directly below the notch (403) and a longitudinal clamping cylinder (5) is installed. When the longitudinal lifting roller conveyor belt (401) moves down to the lowest position, the front and rear ends of the cylinder cover are clamped by the extension of the longitudinal clamping cylinder (5) and the cooperation of the limiting back plate (402).

4. A positioning fixture for cylinder head machining according to claim 2, characterized in that, The transverse rolling assembly (3) includes a transverse roller conveyor belt (301) and a first vertical cylinder (302); The transverse roller conveyor belt (301) is located above the middle of the concave connecting seat (1) and between the longitudinal lifting roller conveyor belt (401) and the positioning support seat (2); The first vertical cylinder (302) is installed at the bottom middle part of the concave connecting seat (1), and the output end of the first vertical cylinder (302) passes through the concave connecting seat (1) and is fixedly connected to the bottom of the bracket of the transverse roller conveyor belt (301). When the cylinder head is lowered from the longitudinal lifting roller conveyor belt (401) to the top of the transverse roller conveyor belt (301), the cylinder head is pre-clamped by the extension of two transverse clamping cylinders (6) to achieve the centering movement of the cylinder head.

5. A positioning fixture for cylinder head machining according to claim 4, characterized in that, The upper surface of the longitudinal lifting roller conveyor belt (401) in its highest state is horizontally higher than the upper surface of the transverse roller conveyor belt (301) in its highest state, and the upper surface of the transverse roller conveyor belt (301) in its highest state is horizontally higher than the upper surface of the positioning support (2). The upper surface of the longitudinal lifting roller conveyor belt (401) and the transverse roller conveyor belt (301) in the lowest state is lower than the upper surface of the positioning support (2).

6. A positioning fixture for cylinder head machining according to claim 4, characterized in that, When the longitudinal lifting roller conveyor belt (401) is in its lowest state, the top horizontal height of the limiting back plate (402) is higher than the upper surface horizontal height of the transverse roller conveyor belt (301).

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