Valve cover processing fixture

Abstract

The present invention discloses a valve cover processing and fixing fixture, comprising a base (1), wherein an intermediate chamber (2) is provided in the base (1), a limiting groove (3) for placing the valve cover is provided at the upper end of the base (1), and an active fixing member (20) is provided in the middle of the intermediate chamber (2), one end of the active member (20) is connected to a driving rod (10), one end of the driving rod (10) is connected to a clamping rod (13), and a clamping block (14) is hinged at the upper end of the clamping rod, and the clamping block (14) is used to clamp the valve cover to fix the valve cover. The present invention realizes clamping of the valve cover through a linkage structure, improves the clamping efficiency of the valve cover, and ensures that the force on each side of the valve cover is uniform when clamping.

Description

Technical Field

[0001] The invention relates to the field of processing fixtures, in particular to a valve cover processing and fixing fixture. Background Art

[0002] Valve cover processing is a common processing method in mechanical processing. When drilling holes in the valve cover, the workpiece needs to be placed on a milling machine for processing, and the corresponding fixture installed on the machine tool is used to clamp the parts. For example, the Chinese utility model patent with the announcement number CN217702486U discloses a fixed plate, which is a rectangular structure, and a support plate is arranged on the lower surface of the end of the fixed plate; a chuck, which is arranged on the upper surface of the support plate, and a pull rod is inserted inside the chuck; a positioning block bracket, which is arranged on a side wall of the fixed plate, and the positioning block bracket and the fixed plate are in a vertical state; the side wall of the chuck is provided with an adjustment block, and the adjustment block is provided in three groups, and the three groups of adjustment blocks are evenly and symmetrically distributed in a circle, and the upper surface of the chuck is provided with a pawl, and the pawl is provided in three groups, and the three groups of pawls are evenly and symmetrically distributed in a circle, and the upper surfaces of the three groups of pawls are fixedly connected with a chuck, the size of the chuck matches the pawl, and the three groups of chucks correspond to the three groups of adjustment blocks, and the upper surface and side wall of the chuck are respectively provided with a positioning plane and a positioning surface. This type of clamp rotates the adjusting block of the chuck when clamping the valve cover, and the adjusting block drives the clamping head to move. One adjusting block corresponds to one clamping head. When clamping the valve cover, multiple adjusting blocks need to be rotated, which makes clamping inconvenient. Summary of the invention

[0003] The purpose of the present invention is to provide a valve cover processing and fixing fixture. The present invention realizes the clamping of the valve cover through a linkage structure, improves the clamping efficiency of the valve cover, and ensures that the force on each side of the valve cover is uniform during clamping.

[0004] The technical solution provided by the present invention is as follows: a valve cover processing and fixing fixture comprises a base, an intermediate chamber is provided in the base, and a limiting groove for placing the valve cover is provided at the upper end of the base; the valve cover processing and fixing fixture also comprises:

[0005] An active fixing member is arranged in the middle of the intermediate chamber;

[0006] A plurality of driving rods are provided on the side wall of the middle chamber; one end of the driving rod is hinged to the active fixing member;

[0007] A plurality of clamping rods, wherein the middle portion of the clamping rods is hingedly connected to the outer side wall of the intermediate chamber; the lower end of the clamping rods is abutted against the other end of the corresponding driving rods;

[0008] The clamping block is arranged at the upper end of the clamping rod and is located above the limiting groove; the active fixing member drives the driving rod to move outward by moving downward to drive the upper end of the clamping rod to rotate inward to achieve the clamping of the valve cover by the clamping block.

[0009] In the above-mentioned valve cover processing and fixing fixture, the active fixing part includes an intermediate column arranged in the intermediate chamber, and a threaded column is provided at the upper end of the intermediate column; a linkage body is sleeved on the intermediate column, and a fixing nut is connected to the threaded column, and the lower end of the fixing nut is tightly attached to the upper end of the linkage body, and a reset spring is provided between the lower end of the linkage body and the chassis of the intermediate column.

[0010] In the aforementioned valve cover processing and fixing fixture, the multiple side seats on the side of the linkage body, the driving rod is connected to the side seat through a bolt; the side of the base is provided with an inclined groove connected to the middle chamber, and the driving rod is inserted into the inclined groove; the outer side of the base is evenly provided with a plurality of brackets, and the middle part of the clamping rod is hinged to the bracket.

[0011] In the aforementioned valve cover processing and fixing fixture, sliding protrusions are provided at the upper and lower ends of the driving rod, the sliding protrusions are in contact with the inner wall of the inclined groove, and the width between the sliding protrusions on both sides corresponds to the inclined groove.

[0012] In the aforementioned valve cover processing and fixing fixture, a hook portion is provided at the lower end of the clamping rod, and the hook portion contacts one end of the driving rod.

[0013] In the aforementioned valve cover processing and fixing fixture, a plurality of side plates are evenly arranged on the outer side of the base, and an auxiliary pressure assembly is arranged on the side plates.

[0014] In the aforementioned valve cover processing and fixing fixture, the auxiliary pressure assembly includes a base plate arranged on the side plate, a fixing rod is provided on the base plate, a pressure block is provided on the fixing rod, and one end of the pressure block is in conflict with the valve cover; a connecting rod is provided between the base plate and the pressure block, and the upper and lower ends of the connecting rod are respectively connected to the base plate and the pressure block through nuts.

[0015] In the aforementioned valve cover processing and fixing fixture, one end of the pressing block is provided with a pressing port in contact with the valve cover.

[0016] The aforementioned valve cover processing and fixing fixture also includes a drilling auxiliary component, which includes a drilling guide plate arranged above the base, and a plurality of positioning tubes corresponding to the hole positions on the valve cover are evenly arranged around the axis on the drilling guide plate; a plurality of positioning holes are evenly arranged on the upper end of the outer edge of the base, a plurality of connecting plates are arranged on the outer side of the drilling guide plate, and a plurality of positioning blocks matching the positioning holes are arranged at the lower part of the connecting plate; a quick connector is arranged between the connecting plate and the side of the base.

[0017] In the aforementioned valve cover processing and fixing fixture, the quick connector includes a straight plate arranged on the side of the base, and a screw is hinged at the end of the straight plate; the end of the connecting plate is provided with a recess for facilitating the passage of the screw, and the screw is equipped with a fastening nut, which is in contact with the upper surface of the connecting plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the valve cover to be processed is placed in the limit groove, and the movable part of the active fixing part of the tool is used to produce a longitudinal displacement downward, and then the driving rod is moved outward, and the outer end of the driving rod contacts the lower end of the clamping rod, and the clamping rod swings inward. Finally, the clamping block moves toward the valve cover set in the limit groove to clamp the valve cover; the clamping of the valve cover is achieved through the linkage structure, which improves the clamping efficiency of the valve cover and ensures that the force on each side of the valve cover is uniform during clamping.

[0020] 2. In the auxiliary pressure assembly, rotate the nut on the upper end of the connecting rod so that the pressure block is pressed on the edge side of the flange, further tightening the valve cover to ensure the stability of the valve cover during processing.

[0021] 3. Install the drilling auxiliary component through the quick-release structure to achieve quick installation of the drilling guide plate. The drilling guide plate can help drill holes more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural diagram of the linkage subject;

[0024] Figure 3 It is a schematic diagram of the structure of the middle column;

[0025] Figure 4 is a schematic diagram of a sliding protrusion;

[0026] Figure 5 It is a schematic diagram of a quick connector;

[0027] Figure 6 Schematic diagram of the auxiliary pressure component.

[0028] 1. Base; 2. Intermediate chamber; 3. Limiting groove; 4. Intermediate column; 5. Threaded column; 6. Linkage body; 7. Fixing nut; 8. Reset spring; 9. Side seat; 10. Driving rod; 11. Inclined groove; 12. Bracket; 13. Clamping rod; 14. Clamping block; 15. Drilling auxiliary assembly; 16. Sliding protrusion; 17. Hook; 18. Side plate; 19. Auxiliary pressure assembly; 20. Active fixing member; 191. Bottom plate; 192. Fixing rod; 193. Pressing block; 194. Connecting rod; 195. Pressing port; 151. Drilling guide plate; 152. Positioning tube; 153. Positioning hole; 154. Connecting plate; 155. Positioning block; 156. Quick connector; 157. Straight plate; 158. Screw; 159. Notch; 160. Fastening nut. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0030] Embodiment: A valve cover processing and fixing fixture includes a base 1, as shown in the attached Figure 1 As shown, the bottom of the base is installed on the fixture table of the machine tool through fixing nails, the base 1 has an intermediate chamber 2, and the upper end of the base 1 has a limiting groove 3 for placing the valve cover, and the valve cover processing and fixing fixture also includes: an active fixing member 20, which is arranged in the middle of the intermediate chamber 2; a driving rod 10, which has multiple rods and is penetrated on the side wall of the intermediate chamber 2; one end of the driving rod 10 is hinged to the active fixing member 20; a clamping rod 13, which has multiple rods and the middle part of the clamping rod 13 is hinged to the outer side wall of the intermediate chamber 2; the lower end of the clamping rod 13 is abutted against the other end of the corresponding driving rod 10; a clamping block 14, which is arranged at the upper end of the clamping rod and is located above the limiting groove 3; the active fixing member 20 drives the driving rod 10 to move outward by moving downward to drive the upper end of the clamping rod 13 to rotate inward to achieve the clamping of the valve cover by the clamping block 14.

[0031] The active fixing member 20 includes an intermediate column 4 installed in the intermediate chamber 2. Figure 3 As shown, the bottom end of the middle column is installed in the middle chamber by screws, and the upper end of the middle column 4 has a threaded column 5; the middle column 4 is sleeved with a linkage body 6, and the threaded column 5 is connected with a fixing nut 7, and the lower end of the fixing nut 7 is tightly attached to the upper end of the linkage body 6, as shown in the attached Figure 2 As shown in the figure, a return spring 8 is installed between the lower end of the linkage body 6 and the chassis of the middle column 4. When the valve cover needs to be removed, the fixing nut is rotated and the return spring will lift the linkage body; the linkage body 6 has a plurality of side seats 9 on the side, and the drive rod 10 is connected to the side seats 9 through bolts; the base 1 has an inclined groove 11 on the side that is connected to the middle chamber 2, and the drive rod 10 is inserted into the inclined groove 11. The upper and lower ends of the drive rod 10 are provided with sliding protrusions 16, as shown in the attached figure. Figure 4 As shown, the sliding protrusion 16 contacts the inner wall of the inclined groove 11, and the width between the sliding protrusions 16 on both sides corresponds to the inclined groove 11, which can ensure the stability of the driving rod sliding when the driving rod slides; a plurality of brackets 12 are evenly arranged on the outside of the base 1, the middle part of the clamping rod 13 is hinged with the bracket 12, and the bottom end of the clamping rod 13 is in conflict with one end of the driving rod 10. The lower end of the clamping rod 13 has a hook portion 17, and the hook portion 17 contacts one end of the driving rod 10. Through this structure, the contact stability of the driving rod and the clamping rod can be ensured, and the clamping rod can swing stably. The upper end of the clamping rod 13 is hinged with a clamping block 14 for clamping the valve cover, and the inner side of the clamping block is an arc surface, which will be in close contact with the side of the valve cover; the upper end of the base 1 and above the limit groove 3 is equipped with a drilling auxiliary component 15.

[0032] The outer side of the base 1 is uniformly provided with a plurality of side panels 18, and an auxiliary pressure assembly 19 is provided on the side panels 18; the auxiliary pressure assembly 19 includes a bottom plate 191 provided on the side panels 18, as shown in the attached Figure 6 As shown, a fixing rod 192 is installed on the bottom plate 191, and a pressing block 193 is installed on the fixing rod 192. The upper end of the fixing rod is clamped on the lower part of the pressing block, and one end of the pressing block 193 is in conflict with the valve cover; a connecting rod 194 is installed between the bottom plate 191 and the pressing block 193, and the upper and lower ends of the connecting rod 194 are respectively connected to the bottom plate 191 and the pressing block 193 through nuts. When the pressing block presses the valve cover, the nut at the upper end needs to be tightened; one end of the pressing block 193 has a pressing port 195 in contact with the valve cover, and the pressing port can ensure that the pressing block and the valve cover are in more stable contact, thereby improving the stability of clamping.

[0033] The drilling auxiliary assembly 15 includes a drilling guide plate 151 arranged above the base 1, and the drilling guide plate 151 is uniformly provided with a plurality of positioning tubes 152 corresponding to the hole positions on the valve cover around the axis; the upper end of the outer edge of the base 1 is uniformly provided with a plurality of positioning holes 153, and a plurality of connecting plates 154 are installed on the outer side of the drilling guide plate 151, and a plurality of positioning blocks 155 matching the positioning holes 153 are provided at the lower part of the connecting plate 154; a quick connector 156 is provided between the connecting plate 154 and the side of the base 1, as shown in the attached Figure 5 As shown, it is necessary to drill holes around the axis on the valve cover. By installing the upper drilling guide plate, the drill bit can ensure the accuracy of the hole position through the drilling guide plate. The quick connector 156 includes a straight plate 157 arranged on the side of the base 1, and a screw 158 is hinged at the end of the straight plate 157; the end of the connecting plate 154 has a notch 159 for the screw 158 to pass through, and a fastening nut 160 is matched on the screw 158. The fastening nut 160 is in conflict with the upper surface of the connecting plate 154. After the positioning block at the bottom of the drilling guide plate is inserted into the positioning hole, the screw is flipped into the notch, and the upper fastening nut is rotated. The drilling guide plate is installed through the quick release structure to improve the installation efficiency of the fixture. By removing the drilling guide plate, the entire fixture can be turned into an ordinary fixture, and the machine tool can process other surfaces of the valve cover.

[0034] The working principle of the present invention is as follows: the valve cover to be processed is placed in the limit groove, and the movable part of the active fixing part of the tool is used to produce a longitudinal displacement downward, and then the driving rod is moved outward, and the outer end of the driving rod contacts the lower end of the clamping rod, and the clamping rod swings inward. Finally, the clamping block moves toward the valve cover set in the limit groove to clamp the valve cover, and then the drilling auxiliary part is installed to better assist drilling and improve the drilling accuracy; the clamping of the valve cover is achieved through a linkage structure, the clamping efficiency of the valve cover is improved, and at the same time, it is ensured that the force on each side of the valve cover is uniform during clamping.

Claims

1. A valve cover processing and fixing fixture, comprising a base (1), wherein an intermediate chamber (2) is provided in the base (1), and a limiting groove (3) for placing the valve cover is provided at the upper end of the base (1); the characteristics are: The valve cover processing and fixing fixture also includes: An active fixing member (20) is arranged in the middle of the intermediate chamber (2); A plurality of driving rods (10) are provided on the side wall of the middle chamber (2); one end of the driving rod (10) is hinged to the active fixing member (20); A plurality of clamping rods (13) are provided, and the middle portion of the clamping rods (13) is hingedly connected to the outer wall of the intermediate chamber (2); the lower end of the clamping rod (13) is in contact with the other end of the corresponding driving rod (10); The clamping block (14) is arranged at the upper end of the clamping rod and is located above the limiting groove (3); the active fixing member (20) drives the driving rod (10) to move outward by moving downward to drive the upper end of the clamping rod (13) to rotate inward, so that the clamping block (14) clamps the valve cover; The active fixing member (20) comprises an intermediate column (4) arranged in the intermediate chamber (2), and a threaded column (5) is provided at the upper end of the intermediate column (4); a linkage body (6) is sleeved on the intermediate column (4), and a fixing nut (7) is connected to the threaded column (5), and the lower end of the fixing nut (7) is tightly attached to the upper end of the linkage body (6), and a return spring (8) is provided between the lower end of the linkage body (6) and the chassis of the intermediate column (4); a plurality of side seats (9) are provided on the side of the linkage body (6), and the driving rod (10) is connected to the side seat (9) via a bolt member; and a side of the base (1) is provided An inclined groove (11) is connected to the middle chamber (2), and the driving rod (10) is inserted into the inclined groove (11); a plurality of brackets (12) are evenly arranged on the outer side of the base (1), and the middle part of the clamping rod (13) is hinged to the bracket (12); sliding protrusions (16) are arranged at the upper and lower ends of the driving rod (10), the sliding protrusions (16) are in contact with the inner wall of the inclined groove (11), and the width between the sliding protrusions (16) on both sides corresponds to the inclined groove (11); a hook portion (17) is arranged at the lower end of the clamping rod (13), and the hook portion (17) contacts one end of the driving rod (10).

2. The valve cover processing and fixing fixture according to claim 1, characterized in that: A plurality of side panels (18) are evenly arranged on the outer side of the base (1), and an auxiliary pressure assembly (19) is arranged on the side panels (18).

3. The valve cover processing and fixing fixture according to claim 2, characterized in that: The auxiliary pressure assembly (19) comprises a bottom plate (191) arranged on the side plate (18), a fixing rod (192) being arranged on the bottom plate (191), a pressing block (193) being arranged on the fixing rod (192), and one end of the pressing block (193) being in contact with the valve cover; a connecting rod (194) being arranged between the bottom plate (191) and the pressing block (193), and the upper and lower ends of the connecting rod (194) being respectively connected to the bottom plate (191) and the pressing block (193) by nuts.

4. The valve cover processing and fixing fixture according to claim 3 is characterized in that: One end of the pressing block (193) is provided with a pressing port (195) in contact with the valve cover.

5. The valve cover processing and fixing fixture according to claim 1, characterized in that: The invention also comprises a drilling auxiliary component (15), wherein the drilling auxiliary component (15) comprises a drilling guide plate (151) arranged above the base (1), and a plurality of positioning tubes (152) corresponding to the hole positions on the valve cover are evenly arranged around the axis on the drilling guide plate (151); a plurality of positioning holes (153) are evenly arranged on the upper end of the outer edge of the base (1); a plurality of connecting plates (154) are arranged on the outer side of the drilling guide plate (151), and a plurality of positioning blocks (155) matching the positioning holes (153) are arranged at the lower part of the connecting plate (154); and a quick connector (156) is arranged between the connecting plate (154) and the side of the base (1).

6. The valve cover processing and fixing fixture according to claim 5, characterized in that: The quick connector (156) comprises a straight plate (157) arranged on the side of the base (1), and a screw rod (158) is hinged at the end of the straight plate (157); a notch (159) is provided at the end of the connecting plate (154) for the screw rod (158) to pass through, and a fastening nut (160) is matched on the screw rod (158), and the fastening nut (160) is in contact with the upper surface of the connecting plate (154).

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