CN-116475728-B - Auxiliary frame opposite-pressure bushing press-fitting tool and press-fitting method

Abstract

The invention provides a pressing tool and a pressing method for split type bushings of an auxiliary frame, which are used for pressing split type bushings of the auxiliary frame and comprise a lower pressing head, an upper pressing head and a pressing mechanism, wherein the lower pressing head is matched with the lower bushing of the split type bushing, the upper pressing head is matched with the upper bushing of the split type bushing, the lower pressing head and the upper pressing head are both connected with the pressing mechanism, the tool structure is optimized and changed, the bushing pressing tool is designed into an up-down opposite pressing structure, the problem that the split working procedure is needed to press the bushings and the upper bushing independently in the traditional bushing pressing mode is solved, and equipment and labor cost are saved.

Inventors

• WANG ZIGUANG
• WEI ZHENYONG
• LIN HANYOU
• Zhong Longzhu

Assignees

• 柳州卓通汽车零部件有限公司

Dates

Publication Date

20260508

Application Date

20230606

Claims (5)

1. 1. A pressing tool for split type bushings of an auxiliary frame (5) is characterized by comprising a lower pressing head (7), an upper pressing head (8) and a pressing mechanism (6), wherein the lower pressing head (7) is matched with a lower bushing (4) of the split type bushing, the upper pressing head (8) is matched with an upper bushing (3) of the split type bushing, the lower pressing head (7) and the upper pressing head (8) are connected with the pressing mechanism (6), the pressing mechanism (6) comprises a lower supporting block (601), a guide post (602), a lower bushing locating pin (603) and an upper bushing locating pin (604), the upper bushing locating pin (604) penetrates through a middle hole of the split type bushing upwards and then is connected with the upper pressing head (8), the lower bushing locating pin (603) penetrates through the lower pressing head (7) in an axially movable mode, the upper end of the lower bushing locating pin (603) is abutted against the lower end of the upper bushing locating pin (604), the lower bushing locating pin (603) and the lower supporting block (602) are connected with the pressing mechanism (6), the lower supporting block (601) and the upper end of the lower bushing locating pin (603) is connected with the lower supporting block (602) in sequence, the upper end of the lower bushing locating pin (602) is connected with the lower end of the upper bushing locating pin (602) through a counter bore (606) in turn, and the upper end of the lower end of the upper end of the lower bushing locating pin is connected with the upper end of the lower end of the upper end of the lower buffer pin (602 in a lower end, the lower part of the lower bushing locating pin (603) and the upper buffer spring (606) are arranged in the counter bore, and the lower bushing locating pin (603), the upper bushing locating pin (604) and the guide post (602) are coaxially arranged.
2. 2. The auxiliary frame opposite-pressure bushing press-fitting tool of claim 1, further comprising a lower buffer spring (605) with one end connected with the lower support block (601) and sleeved on the outer wall of the guide post (602).
3. 3. The auxiliary frame opposite-pressure bushing press-fitting tool of claim 2 is characterized in that the split bushings are arranged on four corners of the auxiliary frame (5), and the number of the pressing mechanisms (6) is 4.
4. 4. A press-fitting method using the sub-frame-to-press bushing press-fitting tool according to claim 2, comprising the steps of: s1, preassembling a bushing pipe (1) on a subframe (5), penetrating a lower bushing (4) into a lower bushing positioning pin (603), and attaching the lower end surface of the lower bushing (4) to a profiling surface of a lower pressure head (7); s2, preassembling an upper bushing (3) on the upper end face of the bushing pipe (1), penetrating an upper bushing locating pin (604) into a middle hole of the upper bushing (3), and attaching a profiling surface of an upper pressure head (8) to the upper end face of the upper bushing (3); S3, the pressing mechanism (6) presses the lower bushing (4) from bottom to top into place by pushing the lower end surface of the lower supporting block (601); S4, the upper end of the pressing mechanism (6) presses the upper bushing (3) from top to bottom in place by pushing the upper end face of the upper pressing head (8), and in the pressing process, the upper bushing locating pin (604) pushes the lower bushing locating pin (603) to move downwards; and S5, after the press fitting is completed, the pressing mechanism (6) unloads force, and the lower bushing locating pin (603) automatically returns under the action of the upper buffer spring (606) to manually take out a piece.
5. 5. The press-fitting method according to claim 4, wherein the step 1 further comprises a step of placing the sub-frame (5) on the pressing mechanism (6) after the four lower bushings (4) of the sub-frame (5) are all put in place.

Description

Auxiliary frame opposite-pressure bushing press-fitting tool and press-fitting method Technical Field The invention belongs to the technical field of automobile manufacturing equipment, and relates to a sub-frame opposite-pressure bushing press-fitting tool and a press-fitting method. Background The traditional auxiliary frame bushing is integrated, the bushing is mounted on a pressing head by manpower, the auxiliary frame is mounted on a special bushing press-mounting tool by manpower, the bushing press automatically drives the pressing head to move to a press-mounting position, and then the bushing is automatically pressed in place by press equipment from bottom to top. The utility model discloses a multiple motorcycle type shared sub vehicle frame bush pressure equipment frock as chinese patent CN216576452U, a motorcycle type sub vehicle frame locating component includes 4A type sub vehicle frame locating base that are used for supporting a motorcycle type sub vehicle frame and 4A type bush pressure heads that are used for pressure equipment a motorcycle type sub vehicle frame bush, A type sub vehicle frame locating base fixed connection respectively at the carousel up end and correspond with the bush mounting hole of a motorcycle type sub vehicle frame, after A type motorcycle type sub vehicle passes through A type sub vehicle frame locating base location on the carousel, wait that the A motorcycle type sub vehicle frame bush of pressure equipment cooperates with the bush mounting hole that corresponds respectively, A type bush pressure head cooperates with the up end of the A motorcycle type sub vehicle frame bush that corresponds respectively. However, the press-fitting tool is an auxiliary frame bushing press-fitting tool, and only the integral bushing can be press-fitted. When the auxiliary frame bushing is changed into a split type, and press fitting in the upper direction and the lower direction is needed, the upper bushing and the lower bushing cannot be press-fitted at the same time by the existing bushing press and the press fitting tool. The upper bushing and the lower bushing can be pressed by two working procedures, so that the equipment and labor cost are increased. Disclosure of Invention The invention provides a bushing pressing tool and a bushing pressing method for an auxiliary frame, which are used for designing the bushing pressing tool into an up-down pressing structure through the optimization and the change of a tool structure, solving the problem that the bushing and an upper bushing are independently pressed in a splitting process in the traditional bushing pressing mode, and saving equipment and labor cost. The auxiliary frame opposite-pressure bushing press fitting tool is used for press fitting of split bushings of auxiliary frames and comprises a lower press head, an upper press head and a pressing mechanism, wherein the lower press head is matched with the lower bushing of the split bushing, the upper press head is matched with the upper bushing of the split bushing, and the lower press head and the upper press head are connected with the pressing mechanism. When the bushing is pressed, the upper pressure head and the lower pressure head are driven by the pressing mechanism to press the upper sub-frame bushing and the lower sub-frame bushing in place at the same time, so that the problem that the bushing and the upper bushing are independently pressed in a splitting procedure in the traditional bushing pressing mode is solved, and the equipment and labor cost are saved. Preferably, the pressing mechanism comprises a lower supporting block, a guide post, a lower bushing locating pin and an upper bushing locating pin, wherein the upper bushing locating pin penetrates through a middle hole of the split bushing upwards and then is connected with the upper pressing head, the lower bushing locating pin axially movably penetrates through the lower pressing head, the upper end of the lower bushing locating pin is in butt joint with the lower end of the upper bushing locating pin, and the lower bushing locating pin, the guide post and the lower supporting block are sequentially connected from top to bottom. Preferably, the lower buffer spring is connected with the lower support block at one end and sleeved on the outer wall of the guide post, and the upper buffer spring is connected with the guide post at one end and connected with the lower part of the lower bushing locating pin at the other end. The upper buffer spring is excessively buffered in the downward moving process, the impact force is reduced, the vibration press-fitting process is stable, the press-fitting effect is good, meanwhile, after the press-fitting is completed, the force is discharged by the pressing mechanism, and the lower bushing locating pin automatically returns under the action of the upper buffer spring. Preferably, the upper end of the guide post is provided with a counter bore downwards, and the lower pa