CN204248504U - Camshaft side keyway processing unit (plant) fixture - Google Patents

Abstract

The utility model discloses a clamp for a keyway processing device on the end face of a camshaft. It includes a workbench and a support. Two sets of clamps are arranged side by side on the support. Each set of clamps includes an axial positioning block, an upper support frame and a lower support frame. And the upper compression cylinder and the lower compression cylinder matched with the upper support frame and the lower support frame, the described axial positioning block is arranged on the lower part of the support, and the pistons of the upper compression cylinder and the lower compression cylinder The free ends of the rods are all hinged to a pressure plate, the middle of the pressure plate is hinged to a connecting rod, the connecting rod is hinged to the side wall of the support, and the free end of the pressure plate compresses the camshaft to be processed when the piston rod is stretched out; the upper support frame A pre-compression mechanism for positioning the camshaft to be processed is provided on the side wall of the support between the lower support frame and the lower support frame. The clamp for the key groove processing device on the end face of the camshaft makes the camshaft firmly and stably fixed, does not deviate during processing, and can conveniently observe the processing process.

Description

Camshaft end face keyway processing device fixture

technical field

The utility model relates to the technical field of camshaft processing, in particular to a clamp for a keyway processing device on the end face of a camshaft.

Background technique

The camshaft is an important part used in automobile engines. Its structure generally includes a main shaft. The main shaft is provided with a plurality of cams with different angles. The two ends of the main shaft are provided with key grooves. The processing of the key grooves on the end faces is generally Fix the camshaft on the machine tool and process it with a drill bit. When the camshaft end face keyway processing device of the prior art is processing the camshaft end face keyway, the camshaft should be fixed horizontally on the workbench of the machine tool. When fixing it, use an oil cylinder, etc. The fixture is fixed, and then the machine's drill is activated for keyway machining. After pressing the camshaft with a fixture such as an oil cylinder that fixes the camshaft, if the position of the camshaft is not placed in place, the camshaft is prone to shift due to the machining of the drill bit when machining the key groove, and the key groove processed in this way does not meet the requirements; Or, the camshaft is placed on the fixture manually, and then it is pressed with an oil cylinder after manual placement. If it is not placed in place manually, it is necessary to loosen the oil cylinder and place it again, and then use the oil cylinder to press it again. The operation of opening the oil cylinder brings a lot of inconvenience to the processing; in addition, the camshaft is fixed to the fixture horizontally. During processing, it is difficult for humans to detect the precise processing position of the keyway, so it cannot be quickly adjusted in real time.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art above, and to provide a clamp for the camshaft end face keyway processing device that can fix the camshaft firmly and stably, avoid deviation during processing, and facilitate observation of the processing process. .

The technical solution of the utility model is to provide a camshaft end surface keyway processing device fixture with the following structure: it includes a workbench and a support vertically connected to the workbench, the same vertical side wall of the support There are two sets of fixtures for clamping the camshaft to be processed side by side. Each set of fixtures includes an axial positioning block, an upper support frame, a lower support frame, and an upper compression cylinder and a lower support frame matched with the upper support frame and the lower support frame. Press the oil cylinder, the axial positioning block is arranged at the lower part of the support, the axial positioning block, the lower support frame and the upper support frame are vertically distributed along the side wall of the support from bottom to top, and the upper The free ends of the piston rods of the pressing oil cylinder and the lower pressing oil cylinder are all hinged to a pressing plate, and the middle part of the pressing plate is hinged to a connecting rod, and the connecting rod is hinged to the side wall of the support, and the free end of the pressing plate protrudes from the piston rod. Compress the camshaft to be processed under the state; a pre-compression mechanism for positioning the camshaft to be processed is provided on the side wall of the support between the upper support frame and the lower support frame.

After adopting the above structure, compared with the prior art, the fixture of the camshaft end surface keyway processing device of the present invention has the following advantages: the camshaft end surface keyway processing device fixture adopts vertical clamping of the camshaft, so that the end surface of the camshaft is upward, In this way, it is very convenient to process the keyway on the end face, and the processing condition of the keyway can be observed in real time, so that the machining accuracy of the keyway is high; The bottom of the camshaft to be processed is offset against the axial positioning block, and then the camshaft to be processed is positioned by the pre-compression mechanism. When the camshaft to be processed is positioned accurately, the upper compression oil cylinder and the lower cylinder are activated Compress the cylinder, the piston rods of the upper and lower compression cylinders are ejected, so that the pressure plate at the free end of the piston rod presses the camshaft to be processed, thus completing the fixing of the camshaft to be processed; The mechanism positions the camshaft to be processed, so that the camshaft to be processed can be installed in place, and the positioning is accurate, and then the upper compression cylinder and the lower compression cylinder are pressed, so that the camshaft to be processed is fixed firmly and stably. Will not shift.

As a preference, the pre-compression mechanism includes a support base and a fixed frame on which the camshaft to be processed is placed, the support base is on the same vertical plane as the upper support frame and the lower support frame, and a A pressure rod, a handle is sleeved on the pressure rod, the inner end of the handle is hinged with the fixed frame, a pull rod is arranged in the middle of the handle, one end of the pull rod is hinged with the pressure rod, and the other end of the pull rod is hinged with the handle, and The free end of the compression rod compresses the camshaft to be processed on the support base when the handle is in a depressed state. When the pre-compression mechanism is in use, the camshaft to be processed is placed on the support base, and then the handle is pulled by hand, and the handle drives the pressure bar to compress the camshaft to be processed. This manual operation can facilitate the clamping and positioning of the camshaft to be processed.

The outer end surface of the support base is provided with a concave, and the gap in the concave is fitted with a movable block, and the outer end surface of the movable block is provided with a slot for accommodating the camshaft to be processed. A spring is arranged in the concave, one end of the spring is against the bottom of the movable block, and the other end of the spring is against the inner bottom wall of the concave. While pressing the camshaft to be processed with the pressing rod of the pre-compression mechanism, the positioning of the camshaft to be processed is made firmer under the elastic force of the spring.

Description of drawings

Fig. 1 is a schematic structural view of the fixture of the camshaft end face keyway processing device of the present invention.

Fig. 2 is a schematic structural view of the support base of the clamp pre-compression mechanism of the camshaft end face keyway processing device of the present invention.

Fig. 3 is a schematic diagram of the enlarged structure of part A in Fig. 1 of the fixture of the camshaft end face keyway processing device of the present invention.

as the picture shows:

1. Worktable, 2. Support, 3. Upper support frame, 4. Camshaft to be processed, 5. Axial positioning block, 6. Lower support frame, 7. Upper compression cylinder, 8. Lower compression cylinder, 9, pressing plate, 10, fixed frame, 11, supporting base, 12, handle, 13, pressing rod, 14, pull rod, 15, movable block, 16, card slot, 17, inner concave, 18, spring, 19, connecting rod .

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, Figure 2 and Figure 3;

This utility model camshaft end surface keyway processing device fixture, it comprises workbench 1 and support 2 vertically connected on workbench 1, and the same vertical side wall of said support 2 is provided with two groups of clamping to be held side by side. The clamps for processing the camshaft 4, each set of clamps includes an axial positioning block 5, an upper support frame 3, a lower support frame 6, and an upper compression cylinder 7 and a lower compression cylinder 7 matched with the upper support frame 3 and the lower support frame 6. Oil cylinder 8, the axial positioning block 5 is arranged on the lower part of the support 2, and the axial positioning block 5, the lower support frame 8 and the upper support frame 3 are vertically distributed along the side wall of the support 2 from bottom to top , the free ends of the piston rods of the upper compression cylinder 7 and the lower compression cylinder 8 are hinged to a pressure plate 9, the middle of the pressure plate 9 is hinged to a connecting rod 19, and the connecting rod 19 is connected to the side of the support 2 The wall is hinged, and the free end of the pressing plate 9 presses the camshaft 4 to be processed under the condition that the piston rod is stretched out; a positioning camshaft 4 to be processed is arranged on the side wall of the support 2 between the upper support frame 3 and the lower support frame 6. Preloading mechanism for axis 4.

Described pre-compression mechanism comprises the support base 11 and the fixed frame 10 of placing the camshaft 4 to be processed, and the described support base 11 is in the same vertical plane with the upper support frame 3 and the lower support frame 6, and the described fixed frame 10 is hinged a pressure rod 13, and a handle 12 is sleeved on the pressure rod 13, the inner end of the handle 12 is hinged with the fixed frame 10, and the middle part of the handle 12 is provided with a pull rod 14, and one end of the pull rod 14 is connected to the pressure rod 14. The rod 13 is hinged, the other end of the pull rod 14 is hinged with the handle 12, and the free end of the pressure rod 13 compresses the camshaft 4 to be processed on the support base 11 when the handle 12 is in a depressed state.

The outer end surface of the support base 11 is provided with an inner concave 17, the gap of the inner concave 17 is fitted with a movable block 15, and the outer end surface of the movable block 15 is provided with a card for accommodating the camshaft 4 to be processed. A spring 18 is arranged in the groove 16 and the concave 17 , one end of the spring 18 is against the bottom of the movable block 15 , and the other end of the spring 18 is against the inner bottom wall of the concave 17 .

Claims (3)

1. A camshaft end face keyway processing device fixture, it comprises workbench (1) and the bearing (2) that is vertically connected on the workbench (1), it is characterized in that: the same of described bearing (2) Two groups of clamps for clamping the camshaft (4) to be processed are arranged side by side on the vertical side wall, and each set of clamps includes an axial positioning block (5), an upper support frame (3), a lower support frame (6) and and The upper support frame (3), the lower support frame (6) are matched with the upper compression cylinder (7) and the lower compression cylinder (8), and the axial positioning block (5) is arranged on the support (2) In the lower part, the axial positioning block (5), the lower support frame (8) and the upper support frame (3) are vertically distributed along the side wall of the support (2) from bottom to top, and the upper pressing oil cylinder ( 7) and the free end of the piston rod of the lower compression oil cylinder (8) are all hinged a pressing plate (9), the middle part of the described pressing plate (9) is hinged a connecting rod (19), and the described connecting rod (19) and the support The side wall of (2) is hinged, and the free end of pressing plate (9) compresses the camshaft (4) to be processed under the state that piston rod stretches out; A pre-compression mechanism for positioning the camshaft (4) to be processed is provided on the side wall of the support (2). 2. The fixture of the camshaft end face keyway processing device according to claim 1, characterized in that: the pre-compression mechanism includes a support base (11) and a fixing frame (10) for placing the camshaft (4) to be processed, Described support base (11) is in the same vertical plane with upper support frame (3) and lower support frame (6), and a compression bar (13) is hinged on the described fixed frame (10), and described compression bar ( 13) A handle (12) is sleeved on the top, and the inner end of the handle (12) is hinged with the fixed frame (10). Depression bar (13) is hinged, and the other end of pull bar (14) is hinged with handle (12), and the free end of depression bar (13) is pressed when handle (12) is depressing state. Machine the camshaft (4). 3. The clamp for the camshaft end surface keyway processing device according to claim 2, characterized in that: the outer end surface of the support base (11) is provided with an inner concave (17), and the inner concave (17) A movable block (15) is fitted in a gap, and the outer end surface of the movable block (15) is provided with a slot (16) for accommodating the camshaft (4) to be processed, and a spring is arranged in the concave (17). (18), one end of the spring (18) is against the bottom of the movable block (15), and the other end of the spring (18) is against the inner bottom wall of the concave (17).