Grinding machine for inner hole of grinding barrel

Abstract

A grinding machine for an inner hole of a material grinding barrel comprises a machine base, a spindle box, a support and an inner hole grinding mechanism, a positioning chuck is arranged on the right side of the spindle box and matched with the support to position the material barrel, and the support and the inner hole grinding mechanism are in sliding fit with the machine base through sliding rails. The inner hole grinding mechanism comprises a supporting seat, a U-shaped positioning groove is machined in the upper portion of the supporting seat, a rack is slidably arranged in the U-shaped positioning groove through a dovetail joint structure, a gear is arranged above the rack in a matched mode, and a tool rest is fixedly arranged at the left end of the rack. The support comprises a base and an upper cover, and the joint of the upper cover and the base defines a containing cavity allowing the material barrel to pass through. The structure is improved on the basis of an original lathe, a support is additionally arranged to be matched with a positioning chuck on a spindle box to be used for positioning a charging barrel, an inner hole grinding mechanism is installed after a tailstock part is dismantled, a gear and rack structure is used for horizontally feeding and matched with rotating motion of the charging barrel, an inner hole of the charging barrel is ground, and the total length of equipment does not need to be increased. And the device is suitable for machining charging barrels with different sizes, the production cost is effectively reduced, and the universality is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grinding machine for grinding the inner hole of a material cylinder. BACKGROUND

[0002] The material cylinder is commonly used in plastic machinery, and the driving force for its advancement and mixing in the plasticizing process of plastic is derived from the relative rotation of the screw rod and the material cylinder. The inner hole of the material cylinder needs to be ground during the manufacturing process to make the inner wall of the material cylinder smooth and meet the use requirements. When the inner hole of the material cylinder is ground, there is an axial relative movement between the material cylinder and the grinding tool. The grinding tool needs to be inserted into the inner hole of the material cylinder. Theoretically, the operating length of the grinding device needs to be at least 2 times the length of the material cylinder. When the length of the material cylinder is relatively long (generally refers to a length of about 3 m, reaching the upper limit of the processing length of an ordinary lathe), the length of the grinding device also needs to be lengthened accordingly. This not only occupies production space, but also increases production cost. SUMMARY

[0003] In view of the deficiencies in the above problems, the utility model provides a grinding machine for grinding the inner hole of a material cylinder.

[0004] To achieve the above-mentioned purpose, the utility model provides a grinding machine for grinding the inner hole of a material cylinder, which comprises a machine base, a main shaft box fixed to the left part of the machine base, a grinding inner hole mechanism arranged on the right part of the machine base, and a support arranged between the main shaft box and the grinding inner hole mechanism. A positioning chuck is arranged on the right side of the main shaft box. The support positions the material cylinder in cooperation with the positioning chuck. The support and the lower part of the grinding inner hole mechanism are both slidably connected to the machine base through slide rails;

[0005] The grinding inner hole mechanism comprises a support seat. The lower part of the support seat is slidably connected to the slide rail and is limited in the horizontal direction by a locking plate I. The upper part of the support seat is processed with a U-shaped positioning groove. A rack is slidably installed in the U-shaped positioning groove through a dovetail structure. A gear meshing with the rack is arranged above the rack. The gear is driven to rotate by a motor. A tool holder is fixed to the left end of the rack.

[0006] The support comprises a base and an upper cover. The lower part of the base is slidably connected to the slide rail and is limited in the horizontal direction by a locking plate. The upper cover is connected to the base to form a receiving cavity for the material cylinder.

[0007] As a further improvement of the utility model, the gear is fixed to the middle part of a rotating shaft. The rotating shaft is connected to the support seat through a bearing seat at both ends. One end of the rotating shaft is connected to the motor after penetrating through the bearing seat. The motor is installed outside the bearing seat.

[0008] As a further improvement of the utility model, the accommodating cavity is radially provided with limiting bolts, three groups of limiting bolts are evenly arranged along the circumferential direction of the accommodating cavity, one group of limiting bolts is arranged in the middle of the upper cover, two groups of limiting bolts are symmetrically arranged on the front and rear sides of the base, one end of the limiting bolt facing the center of the accommodating cavity is fixedly provided with a ejector rod, and the ejector rod supports the barrel at the end.

[0009] As a further improvement of the utility model, the rear end of the upper cover is hingedly connected with the base through a pin shaft, and the front end of the upper cover is connected and positioned with the base through a bolt connecting piece.

[0010] As a further improvement of the utility model, the end of the ejector rod is embeddedly provided with a ball bearing, and the ball bearing abuts against the outer circumferential surface of the barrel.

[0011] As a further improvement of the utility model, the slide rail is provided with two parallel slide rails, a guide groove is formed between the slide rails, the locking plate I and the locking plate are slidably arranged in the guide groove, a locking bolt I is fixedly arranged on the upper part of the locking plate I, a through slot I is formed in the lower part of the supporting seat, the upper part of the locking bolt I is inserted into the through slot I and locked by a nut, a locking bolt is fixedly arranged on the upper part of the locking plate, a through slot is formed in the lower part of the base, and the upper part of the locking bolt is inserted into the through slot and locked by a nut.

[0012] The utility model has the advantages of:

[0013] The structure is transformed on the basis of the original lathe, the support is additionally arranged to cooperate with the positioning chuck on the spindle box for barrel positioning, the tailstock part is removed, the hole grinding mechanism is installed, the horizontal feed is realized by using the gear and rack structure, the rotation of the barrel is matched, the hole of the barrel is ground, the total length of the equipment does not need to be increased, barrels of different sizes can be processed, the production cost is effectively reduced, and the universality is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the grinding machine for grinding the hole of the barrel of the utility model;

[0015] Figure 2 It is a front view of the grinding machine for grinding the hole of the barrel of the utility model; Figure 1 It is a front view of the grinding machine for grinding the hole of the barrel of the utility model;

[0016] Figure 3 It is a front view of the grinding machine for grinding the hole of the barrel of the utility model; Figure 1 It is a front view of the grinding machine for grinding the hole of the barrel of the utility model.

[0017] In the figure: 1, base; 2, main shaft box; 21, positioning chuck; 3, slide rail; 31, guide groove; 4, support; 41, base; 411, through slot; 42, limiting bolt; 421, ejector pin; 422, ball; 43, upper cover; 44, bolted joint; 45, accommodating cavity; 46, pin shaft; 47, locking bolt; 48, locking plate; 5, inner hole grinding mechanism; 51, support seat; 511, U-shaped positioning groove; 512, through slot I; 52, rack; 53, gear; 531, rotating shaft; 54, bearing seat; 55, motor; 56, locking bolt I; 57, locking plate I; 58, tool holder; 6, barrel. DETAILED DESCRIPTION

[0018] As Figure 1 shown, the utility model discloses a kind of abrasive barrel inner hole grinding machines, including base 1, main shaft box 2 being fixed in the left part of base 1, be located in the right part of base 1 and grind inner hole mechanism 5, be located between main shaft box 2 and grinding inner hole mechanism 5 support 4, main shaft box 2 right side is equipped with positioning chuck 21, support 4 cooperates with positioning chuck 21 and positions barrel 6, support 4, grinding inner hole mechanism 5 lower part are all through slide rail 3 and base 1 form sliding fit;

[0019] Grinding inner hole mechanism 5 includes support seat 51, support seat 51 lower part is slidably connected with slide rail 3 and is limited in horizontal direction using locking plate I 57, U-shaped positioning groove 511 is processed in the upper part of support seat 51, rack 52 is slidably installed in U-shaped positioning groove 511 by dovetail structure, rack 52 upper side is equipped with meshing gear 53, gear 53 is rotated by motor 55 drive, rack 52 left end is equipped with tool holder 58, gear 53 is fixed in the middle part of rotating shaft 531, rotating shaft 531 both ends are connected support seat 51 by bearing seat 54, rotating shaft 531 one end passes through bearing seat 54 and connects motor 55, motor 55 is installed on the outside of bearing seat 54 (see Figure 2 ), motor 55 uses step motor;

[0020] Support 4 includes base 41, upper cover 43, upper cover 43 rear end is hinged with base 41 by pin shaft 46, upper cover 43 front end is connected and positioned with base 41 by bolted joint 44, base 41 lower part is slidably connected with slide rail 3 and is limited in horizontal direction using locking plate 48, upper cover 43 and the connecting place of base 41 are enclosed and form accommodating cavity 45 for barrel 6 to pass through, the radial installation limiting bolt 42 in accommodating cavity 45, limiting bolt 42 is evenly provided with three groups along the circumferential direction of accommodating cavity 45, one of which is located in the middle of upper cover 43, two limiting bolts 42 are symmetrically arranged on the front and back sides of base 41, the one end of limiting bolt 42 towards the center of accommodating cavity 45 is fixed with ejector pin 421, the end of ejector pin 421 supports barrel 6, ball 422 is embeddedly installed on the end of ejector pin 421, ball 422 and the outer circumferential surface of barrel 6 abut (see Figure 3 ).

[0021] The slide rail 3 is provided with two parallel slide rails 3, and a guide groove 31 is formed between the slide rails 3, and the locking plate I 57 and the locking plate 48 are slidably arranged in the guide groove 31, the locking plate I 57 is fixedly provided with a locking bolt I 56 at the upper portion, the support seat 51 is processed with a through slot I 512 at the lower portion, the locking bolt I 56 is inserted into the through slot I 512 at the upper portion and locked by a nut, the locking plate 48 is fixedly provided with a locking bolt 47 at the upper portion, the base 41 is processed with a through slot 411 at the lower portion, and the locking bolt 47 is inserted into the through slot 411 at the upper portion and locked by a nut.

[0022] The structure is transformed on the basis of the original lathe, a support is additionally arranged to cooperate with the positioning chuck on the spindle box to position the barrel, the tailstock part is removed and the inner hole grinding mechanism is installed, horizontal feeding is realized by using the gear and rack structure, the rotation of the barrel is matched, the inner hole of the barrel is ground, the total length of the equipment does not need to be increased, barrels of different sizes can be processed, the production cost is effectively reduced, and the universality is good.

[0023] In specific use, the utility model is described in combination with the drawings for the convenience of understanding the utility model:

[0024] In work, first, the barrel is positioned, the upper cover is in the open state, the horizontal position of the support is adjusted according to the length of the barrel, and the barrel is positioned by using the locking plate and the locking bolt, one end of the barrel is clamped by the positioning chuck, the other end of the barrel is arranged on the upper portion of the base of the support, the positions of the two groups of limiting bolts on the base are adjusted, the ball surface at the end of the jacking rod abuts against the outer peripheral surface of the screw rod, then the upper cover is covered, the upper cover and the base are locked by the bolt connecting piece, the position of the limiting bolt in the middle of the upper cover is adjusted, the ball surface at the end of the jacking rod abuts against the outer peripheral surface of the screw rod, and the three groups of jacking rods cooperate to support the barrel together; the horizontal position of the inner hole grinding mechanism is adjusted and positioned by using the locking plate I and the locking bolt I, so that the inner hole grinding mechanism is located at the right side of the barrel, and the matching grinding tool is assembled on the tool holder according to the hole diameter of the inner hole of the barrel; the power mechanism in the spindle box drives the positioning chuck and the barrel to rotate, at the same time, the gear is driven by the motor to rotate clockwise, the rotation of the gear is converted into the horizontal movement of the rack, and the rack drives the grinding tool to move left at a constant speed and then extends into the inner hole of the barrel to grind.

[0025] The preferred embodiments of the utility model are described above, and are not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An abrasive cylinder hole lapping machine characterized by: The application relates to a machine base (1), a main shaft box (2) fixed to the left part of the machine base (1), an inner hole grinding mechanism (5) arranged at the right part of the machine base (1), a support (4) arranged between the main shaft box (2) and the inner hole grinding mechanism (5), a locating chuck (21) arranged at the right side of the main shaft box (2), and a material cylinder (6) positioned by the support (4) and the locating chuck (21); the support (4) and the inner hole grinding mechanism (5) are slidably connected with the machine base (1) through slide rails (3); the inner hole grinding mechanism (5) comprises a supporting seat (51) which is slidably connected with the slide rail (3) and is limited in the horizontal direction by a locking plate I (57); a U-shaped positioning groove (511) is formed in the upper part of the supporting seat (51); a rack (52) is slidably arranged in the U-shaped positioning groove (511) through a dovetail structure; a gear (53) is arranged above the rack (52) and is in engagement with the rack (52); the gear (53) is driven to rotate by a motor (55); and a tool holder (58) is fixed to the left end of the rack (52); the support (4) comprises a base (41) and an upper cover (43); the base (41) is slidably connected with the slide rail (3) and is limited in the horizontal direction by a locking plate (48); and a containing cavity (45) for the material cylinder (6) is formed in the connecting part between the base (41) and the upper cover (43).

2. An abrasive cylinder bore grinding machine according to claim 1, characterized in that: the gear (53) is fixed to the middle part of a rotating shaft (531); the rotating shaft (531) is connected with the supporting seat (51) through a bearing seat (54) at both ends; one end of the rotating shaft (531) penetrates through the bearing seat (54) and is connected with the motor (55); and the motor (55) is arranged outside the bearing seat (54).

3. An abrasive cylinder bore grinding machine according to claim 1, characterized in that: limiting bolts (42) are arranged in the containing cavity (45) in the radial direction; three groups of the limiting bolts (42) are evenly arranged along the circumferential direction of the containing cavity (45); one group of the limiting bolts (42) is arranged in the middle part of the upper cover (43); two groups of the limiting bolts (42) are symmetrically arranged on the front and back sides of the base (41); one end of each limiting bolt (42) is fixed with a jacking rod (421) which is directed to the center of the containing cavity (45); and the end of the jacking rod (421) supports the material cylinder (6).

4. An abrasive cylinder bore grinding machine according to claim 3, characterised in that: the rear end of the upper cover (43) is hingedly connected with the base (41) through a pin shaft (46); and the front end of the upper cover (43) is connected with the base (41) through a bolt connecting piece (44).

5. An abrasive cylinder bore grinding machine according to claim 3, characterized in that: the end of the jacking rod (421) is embeddedly arranged with a ball (422); and the ball (422) is in abutment with the outer circumferential surface of the material cylinder (6).

6. An abrasive barrel hole grinder as defined in claim 1 wherein: The slide rail (3) is provided with two parallel ones, the guide groove (31) is formed between the slide rail (3), the locking plate I (57) and the locking plate (48) are slidably arranged in the guide groove (31), the locking bolt I (56) is fixedly arranged on the upper portion of the locking plate I (57), the through slot I (512) is formed on the lower portion of the supporting seat (51), the upper portion of the locking bolt I (56) extends into the through slot I (512) and is locked by a nut, the locking bolt (47) is fixedly arranged on the upper portion of the locking plate (48), the through slot (411) is formed on the lower portion of the base (41), and the upper portion of the locking bolt (47) extends into the through slot (411) and is locked by a nut.

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