The main components of a tool grinder

The tool grinder and lathe bed is a cast component with an integral box structure. The upper part of the box features a set of longitudinal V-shaped guideways and flat guideways; the rear section is equipped with a set of horizontal V-shaped guideways and flat guideways. A worktable is mounted on the longitudinal guideways.

　　 Tool grinder The MQ6025A tool grinder, a key component, is an improved T-type tool grinder with excellent performance. After being equipped with appropriate accessories, it can not only grind commonly used tools such as reamers, milling cutters, hobbing cutters, broaches, and gear-hobbing tools, as well as various specialized tools, but also grind external circles, internal surfaces, flat surfaces, and templates—thus offering a relatively broad range of machining capabilities.

　　The tool grinder lathe’s bed is a cast component with an integral box structure. The upper part of the box features a set of longitudinal V-shaped guideways and flat guideways; the rear section is equipped with a set of horizontal V-shaped guideways and flat guideways. A worktable is mounted on the longitudinal guideways. A horizontal carriage is mounted on the horizontal guideways. Electrical components are installed on the left-side door and the rear door of the bed. The worktable is divided into two parts: an upper worktable and a lower worktable. The lower worktable is mounted on the bed’s longitudinal guideways, which are fitted with cylindrical pins to ensure smooth, uniform, and rapid movement of the worktable. The worktable can be moved forward and backward via four control mechanisms, making it easy to perform grinding operations at different positions.

　　The lateral carriage is mounted on the bed’s lateral guide rails, and cylindrical needle rollers are provided between the guide rails. The lateral movement is driven by a handwheel via a trapezoidal screw and nut. One full rotation of the handwheel corresponds to 3 mm, while one small division corresponds to 0.01 mm. Since the handwheel is mounted on the same screw, it can be operated from both the front and rear of the machine. The grinding head holder and lifting mechanism are mounted on the horizontal carriage. When the handwheel is rotated, the grinding head holder undergoes lateral feed motion.

　　 Tool grinder The grinding head and the lifting mechanism both use a standard A1-7132 motor for the grinding head. The components are assembled by fitting them together, integrating the housing and the abrasive shell into a single unit. The motor stator has been redesigned from internal pressure to external pressure, and a micro-V-belt is used to drive the rotation of the grinding head spindle. Grinding wheel holders can be installed at both ends of the grinding head spindle. The spindle speeds are 4,200 rpm and 5,600 rpm, achieved via two gears. The grinding head motor can operate in either forward or reverse direction according to grinding requirements, controlled by a direction switch on the control panel. The grinding head lifting mechanism employs cylindrical guide rails and inclined-key guidance. The lifting mechanism is driven either manually or by a motor. When operating manually, turning the handwheel causes the turbine gear pair and a pair of spur gears to reduce the speed, thereby increasing torque. The lifting action is then transmitted through a nut and lead screw to move the guide rail up and down. During operation, pressing the lifting button (located on the control panel) starts the motor, which drives the reduction gear via a gear differential. The motion is then transmitted through a coupling to the lead screw, and finally, the guide rail is raised or lowered by the nut.

　　Left and Right Top Mounts: The left and right top mounts are primarily used for clamping tools with center holes as well as tools that require central-axis clamping. Chuck: The chuck is mainly used for holding end mills, vertical milling cutters, three-sided blade disc milling cutters, angular milling cutters, and the like, and is suitable for grinding straight teeth or tapered teeth.

　　Operation and adjustment of the workbench, as well as selection of operator positioning. Tool grinder When grinding internal and external circles, the operator should stand in front of the machine, as the control handle for the worktable is located on the right side at the front of the machine, making it convenient for operation and observation. When grinding cutting tools, due to the different grinding methods, operators generally stand on the left or right side of the machine’s worktable for ease of operation and observation.

　　Selection of control handles and control methods. Choose the control handle according to the grinding mode. When grinding both internal and external circles, operate the handwheel to move the table slowly and evenly. For grinding tools, operate the handwheel to quickly move the worktable. Adjustment of the worktable stroke: Since the table is guided by cylindrical pins, even slight carelessness in control can lead to excessive stroke. To precisely control the stroke during the grinding process, limiters can be used to restrict the grinding position. The method of using stop blocks is essentially the same as that for external cylindrical grinders.