Initial gear testing mechanism of coffee machine grinder

Abstract

The utility model relates to an initial gear testing mechanism for a coffee machine grinder, and aims to solve the technical problems that the detection of the initial gear of the grinder of the conventional like product is relatively inconvenient, the testing efficiency is low, the mode is relatively single, and automatic detection equipment is lacked. The main body of the mechanism is a workbench, and the main body is characterized in that a display screen and a probe assembly which move up and down through a sliding rail shaft are arranged on the working wall on one side of the working face of the main body, a bean grinding assembly containing groove fixed to the working face through a clamp is formed in the working face of the main body below the probe assembly, and a grinder assembly is aligned with a notch of the bean grinding assembly containing groove to be placed in; a starting button on the display screen is pressed down, a left bean grinding assembly clamp and a right bean grinding assembly clamp of the clamp move towards the middle to clamp a grinder assembly of a bean grinding assembly containing groove, meanwhile, a sliding rail shaft moves downwards and drives a probe assembly to move downwards, and a probe on the probe assembly makes contact with the height difference of an upper conical cutter and a lower conical cutter of the grinder assembly.

Description

Technical Field

[0001] The utility model relates to a testing mechanism for a coffee grinder, in particular to an initial gear position testing mechanism for a coffee machine grinder. Background Art

[0002] A coffee machine mainly refers to a fully automatic or semi-automatic appliance that integrates the entire process of brewing coffee, including grinding, pressing, filling, brewing, and removing dregs. The traditional grinding technology of these coffee machines is mostly based on a vertical motor grinding structure, with multi-stage transmission and planetary gear transmission. Its structural design has special conditions that cause large overall space requirements and high noise. For this reason, the grinder components of some coffee machines use structures such as conical knives and gear components to reduce the space occupied by the motor, improve the grinding effect, and facilitate coarse and fine adjustment; usually, after these grinder components are assembled, they need to be adjusted to the appropriate gear before they can be assembled and shipped. At present, most manufacturers on the market do not have more effective and convenient equipment to detect the initial gear position of the grinder. Some devices can only perform simple tests on the outer grinding core and the inner grinding core through a micrometer, such as the patent number 202021005946.4 disclosed in the Chinese patent literature, the authorization announcement date 2021.09.03, and the utility model name "An electric coffee grinder"; however, the above-mentioned micrometer has a poor structural design, is inconvenient to use, and is difficult to use with the corresponding testing organization. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a coffee machine grinder initial gear position testing mechanism to the art, so as to solve the technical problems of the existing similar products such as the inconvenience of testing the initial gear position of the grinder, low testing efficiency, relatively single method, and lack of automatic testing equipment. The purpose is achieved through the following technical solutions.

[0004] A coffee machine grinder initial gear testing mechanism, the main body of the mechanism is a workbench, a working wall on one side of the working surface of the main body is provided with a display screen and a probe assembly that move up and down through a sliding rail shaft, a working surface of the main body below the probe assembly is provided with a grinding bean assembly placement groove fixed to the working surface by a clamp, the grinder assembly is aligned with the notch of the grinding bean assembly placement groove and placed, a circuit board of the display screen or a main body controller below the workbench is provided with a host, and a processor of the host is connected to a data interface of the display screen by wireless or wired means; the key point of its structural design is that a height difference micrometer is provided on a bracket on the working wall of the main body at one side of the sliding rail shaft, after the grinder assembly is aligned with the notch of the grinding bean assembly placement groove and placed, a start button is pressed on the display screen, the left clamp of the grinding bean assembly and the right clamp of the grinding bean assembly of the clamp move to the middle to clamp the grinder assembly of the grinding bean assembly placement groove, and at the same time, the sliding rail shaft moves downward and drives the probe assembly to move downward, and the probe on the probe assembly contacts the height difference between the upper cone cutter and the lower cone cutter of the grinder assembly. Thus, the probe calculates the height difference of the contact point and the corresponding height difference of the upper cone cutter and the lower cone cutter through the program in the processor of the host, and the height difference of the touch is counted through the program; if the test of the above mechanism does not meet the qualified value set overdue, it will be displayed on the display screen as unqualified; if the probe fails, or if there is doubt about the probe test data, use the height difference micrometer to detect. The above height difference micrometer is set as needed, that is, it can also be omitted.

[0005] The height difference micrometer comprises a micrometer, a fixed outer sleeve and a fixed inner sleeve, one end of the micrometer inner connecting rod of the micrometer of the height difference micrometer extends out of the top, the other end of the connecting rod extending in the micrometer extends into the fixed inner sleeve through the fixed outer sleeve and the fixed inner sleeve, the fixed inner sleeve is fixed to the fixed outer sleeve by a machine screw on one side of the fixed outer sleeve, and the limiting groove at the connecting rod in the micrometer in the inner fixed inner sleeve is limited to move up and down in the inner fixed inner sleeve by another machine screw on one side of the inner fixed inner sleeve; the circuit board in the height difference micrometer is provided with a wireless transmission module and a battery, and the circuit board in the micrometer is connected to the processor in the host through the wireless transmission module or a data line. The height difference micrometer is then aligned with the upper and lower cone cutters of the grinder assembly and placed horizontally, that is, after being placed, the fixed outer sleeve of the height difference micrometer presses on the upper cone cutter, the inner sleeve and the micrometer are fixed, driving the micrometer to slide downward and press on the lower cone cutter, and the height difference of the upper and lower cone cutters can be calculated by the height difference of the inner and outer sleeves in the height difference micrometer.

[0006] The bottom corners of the fixed outer sleeve and the fixed inner sleeve are provided with corresponding and aligned openings, which are respectively communicated with the bottom sleeves of the fixed outer sleeve and the fixed inner sleeve, and the machine screws at the fixed inner sleeve are screwed into the fixed inner sleeve through one side of the opening. The above structure facilitates the installation of the fixed outer sleeve and the fixed inner sleeve, and facilitates the insertion test of the upper and lower cone cutters of the grinder assembly.

[0007] The probe assembly is provided with four probes, and the four probes respectively test whether the height difference of the upper cone cutter and the lower cone cutter in the grinder assembly reaches the initial gear, and display whether it is qualified on the display screen. The four probes of the above-mentioned probe assembly contact the upper cone cutter and the lower cone cutter of the grinder assembly, and the four probes calculate the height difference of the four contact points and the corresponding height difference of the upper cone cutter and the lower cone cutter through the program, and the height difference of the four points is counted through the program.

[0008] The four probes of the probe assembly are respectively arranged on the probe fixing plate, and a slot is arranged on the back of one side of the working wall of the main body of the grinding bean assembly placement slot, and an I-shaped sliding rail shaft is arranged at the slot, and an assembly connecting plate is arranged in front of the sliding rail shaft, and a probe assembly base is arranged at the front lower end of the assembly connecting plate, and the probe assembly base is provided with four circular openings, and the probe assembly base is provided with a circular groove, and the probe fixing plate is arranged in the groove, and the groove fixing plate is provided with four circular openings corresponding to the four openings on the probe base, and the probe passes through the circular openings of the probe fixing plate and the probe assembly base and is fixed therein, and the assembly connecting plate above the probe assembly base is provided with the display screen. The above structure facilitates the installation of the assembly connecting plate, the display screen, and the probe.

[0009] The work surface of the workbench of the main body is provided with a left clamp track and a right clamp track with two long strip slots symmetrically arranged on both sides, and the left clamp of the grinding bean assembly and the right clamp of the grinding bean assembly are respectively installed on the left clamp track and the right clamp track on both sides, and the grinding bean assembly placement groove is provided in the middle of the work surface. The above is a specific clamp structure embodiment, and the following clamp block structure embodiments can also be adopted.

[0010] The ends of the left and right clamps of the bean grinding assembly above the notch of the bean grinding assembly placement groove are respectively formed into arc-shaped side grooves, and the arc-shaped side grooves of the left and right clamps of the bean grinding assembly wrap around the outer diameter of the cylindrical segment shell of the clamping grinder assembly. The above clamping structure and clamping position are not easy to cause scratches on the grinder assembly.

[0011] The guide screw at the sliding rail shaft and the fixture is respectively provided with a manual mechanism and / or an automatic mechanism, one end of the guide screw at the automatic mechanism is provided with a stepping motor, and the other end of the guide screw is provided with an extended rocker arm. The guide screw in the automatic mechanism in use state can also be replaced with a corresponding cylinder solenoid valve.

[0012] Clamps are symmetrically arranged on both sides of the bottom of the notch of the grinding bean assembly placement slot, and one end of the clamp is driven to reciprocate by the cylinder solenoid valve, while the other end of the clamp clamps the clamp column raised at the bottom of the grinder assembly in the notch of the grinding bean assembly placement slot. The clamp is used in conjunction with the clamp as needed, or the clamp can be omitted and used independently.

[0013] An integrated lower cone cutter adjustment platform is provided on one side of the working surface of the main body. When the adjustment gear on the lower cone cutter adjustment platform meshes with the teeth on the coarse and fine adjustment toothed disc of the grinder assembly, the coarse and fine adjustment toothed disc drives the upper cone cutter of the grinder assembly to adjust to an initial gear position between the upper cone cutter and the lower cone cutter through the rotation of the lower cone cutter.

[0014] The utility model has reasonable structural design, simple and convenient detection of the initial gear position of the grinder, high test efficiency and wide application range; the utility model is suitable for use as an initial gear position testing mechanism for a coffee machine grinder and a further improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the grinder assembly state after removal.

[0017] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of the height difference micrometer, with numerical display added.

[0018] Figure 4 yes Figure 3 Schematic diagram of the exploded structure of the height difference micrometer.

[0019] Figure 5 yes Figure 2 Schematic diagram of part of the explosion structure.

[0020] Figure 6 yes Figure 1 A schematic cross-sectional structure diagram of the present invention, in which part A is framed.

[0021] Figure 7 yes Figure 6 Enlarged view of part A.

[0022] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure of the height difference micrometer test grinder assembly status. The dotted line in the figure is the second position of the upper cone cutter, and part B is framed.

[0023] Fig. 9 yes Figure 8 Enlarged view of part B.

[0024] Fig.10 yes Figure 8 Schematic diagram of the three-dimensional structure of the bottom of the grinder assembly.

[0025] Serial number and name of the accompanying drawings: 1. Main body, 2. Display screen, 3. Probe assembly, 4. Clamp assembly, 5. Height difference micrometer, 6. Grinder assembly, 601. Upper cone cutter, 602. Lower cone cutter, 603. Clamp block column, 604. Coarseness adjustment gear disc, 7. Micrometer, 8. Fixed outer sleeve, 9. Machine screw, 10. Fixed inner sleeve, 11. Probe fixing plate, 12. Probe assembly base, 13. Assembly connecting plate, 14. Left clamp of grinding bean assembly, 15. Left clamp track, 16. Grinding bean assembly placement slot, 17. Sliding rail shaft, 18. Right clamp of grinding bean assembly, 19. Right clamp track, 20. Probe. Implementation

[0026] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 10 As shown, the main body 1 of the mechanism is a workbench, and a working wall on one side of the working surface of the main body is provided with a display screen 2 and a probe assembly 3 which are moved up and down by a sliding rail shaft 17, and a grinding bean assembly placement groove 16 which is fixed to the working surface by a clamp is provided on the working surface of the main body below the probe assembly, and the grinder assembly 6 is aligned with the notch of the grinding bean assembly placement groove and is placed therein, and a main body is provided with a circuit board of the display screen or a controller in the main body below the workbench, and a processor of the main body is connected to a data interface of the display screen by wireless or wired means. A height difference micrometer 5 is provided on the bracket on the working wall of the main body on one side of the sliding rail shaft. After the grinder assembly is aligned with the notch of the grinding bean assembly placement slot and placed, the start button is pressed on the display screen, and the left clamp 14 of the grinding bean assembly and the right clamp 18 of the grinding bean assembly of the clamp move toward the middle to clamp the grinder assembly in the grinding bean assembly placement slot. At the same time, the sliding rail shaft moves downward and drives the probe assembly to move downward, and the probe 20 on the probe assembly contacts the upper cone cutter 601 and the lower cone cutter 602 of the grinder assembly. The probe calculates the height difference of the contact point and the corresponding height difference of the upper cone cutter and the lower cone cutter through the program in the processor of the host, and the touched height difference is counted through the program.

[0027] The height difference micrometer comprises a micrometer 7, a fixed outer sleeve 8 and a fixed inner sleeve 10, one end of the micrometer inner connecting rod of the height difference micrometer extends out of the top, the other end of the connecting rod extending in the micrometer extends into the fixed inner sleeve through the fixed outer sleeve and the fixed inner sleeve, the fixed inner sleeve is fixed to the fixed outer sleeve by a machine screw 9 on one side of the fixed outer sleeve, and the limiting groove at the connecting rod in the micrometer in the inner fixed inner sleeve is limited to move up and down in the inner fixed inner sleeve by another machine screw on one side of the inner fixed inner sleeve; the circuit board in the height difference micrometer is provided with a wireless transmission module and a battery, and the circuit board in the micrometer is connected to the processor in the host through the wireless transmission module or a data cable. The end angles on one side of the bottom of the fixed outer sleeve and the fixed inner sleeve are provided with corresponding and aligned openings, the openings are respectively communicated with the bottom sleeves of the fixed outer sleeve and the fixed inner sleeve, and the machine screw at the fixed inner sleeve is screwed into the fixed inner sleeve through one side of the opening.

[0028] The above-mentioned probe assembly is provided with four probes, and the four probes respectively test whether the height difference of the four positions of the upper cone cutter and the lower cone cutter in the grinder assembly reaches the initial gear position, and display whether it is qualified on the display screen. The four probes of the probe assembly are respectively arranged on the probe fixing plate 11, and a groove is provided on the back of one side of the working wall of the main body of the grinding bean assembly placement groove, and an I-shaped sliding rail shaft 17 is provided at the groove. A component connecting plate 13 is provided in front of the sliding rail shaft, and a probe component base 12 is provided at the front lower end of the component connecting plate. The probe component base is provided with four circular openings, and the probe component base is provided with a circular groove. The probe fixing plate is provided in the groove, and the groove fixing plate is provided with four circular openings corresponding to the four openings on the probe base. The probe passes through the circular openings of the probe fixing plate and the probe component base and is fixed therein. The component connecting plate above the probe component base is provided with the display screen.

[0029] The work surface of the workbench of the main body is provided with a left clamp track 15 and a right clamp track 19 with two long strip slots symmetrically arranged on both sides, and the left clamp of the bean grinding assembly and the right clamp of the bean grinding assembly are respectively installed on the left clamp track and the right clamp track on both sides, and the middle of the work surface is provided with the bean grinding assembly placement groove. The left clamp of the bean grinding assembly and the right clamp of the bean grinding assembly above the notch of the bean grinding assembly placement groove have one end of an arc-shaped side groove, respectively, and the arc-shaped side grooves of the left clamp of the bean grinding assembly and the right clamp of the bean grinding assembly wrap around the outer diameter of the cylindrical segment shell of the clamped grinder assembly.

[0030] The specific implementation plan of the mechanism is as follows: first, align the grinder assembly with the notch of the grinding bean assembly placement slot and put it in, then press the start button on the display screen, the left and right clamps of the grinding bean assembly move to the middle to clamp and fix the grinding bean assembly, then the sliding rail axis moves downward, driving the probe assembly to move downward, and the four probes on the probe assembly contact the upper and lower cone cutters. The four probes calculate the height difference of the four contact points through the program, and the program calculates the height difference of the upper and lower cone cutters. The program counts the height difference of the four points. If it does not meet the overdue set qualified value, it will be displayed as unqualified on the display screen. If the probe fails, or if there is doubt about the probe test data, use the height difference micrometer to detect, first reset the micrometer to zero and align it with the upper and lower cone cutters and put it in horizontally. After it is put in, the fixed outer sleeve of the height difference micrometer presses on the upper cone cutter, and the inner sleeve and the micrometer are fixed, driving the micrometer to slide downward and press on the lower cone cutter. The height difference of the upper and lower cone cutters is calculated on the instrument through the height difference of the inner and outer sleeves.

[0031] The above program counts the height differences of the four points. If they do not meet the qualified value set before the deadline, the display will show "unqualified".

[0032] The specific operation steps of the height difference micrometer of this mechanism are as follows: When the probe fails or when there is doubt about the probe test data, use the height difference micrometer to perform the test. First, reset the micrometer to zero and align it with the upper and lower cone cutters and put it in horizontally; after putting it in, the fixed outer sleeve of the height difference micrometer presses on the upper cone cutter, and the inner sleeve and the micrometer are fixed, driving the micrometer to slide down and press on the lower cone cutter; the height difference of the upper and lower cone cutters is calculated on the micrometer through the height difference of the inner and outer sleeves.

[0033] At the same time, in order to reset the initial gear position of unqualified products to zero, an integrated lower cone cutter adjustment platform is provided on one side of the working surface of the above-mentioned main body. When the adjustment gear at the lower cone cutter adjustment platform meshes with the coarse and fine adjustment toothed disc 604 of the grinder assembly, the coarse and fine adjustment toothed disc drives the upper cone cutter of the grinder assembly to adjust to the initial gear position between the upper cone cutter and the lower cone cutter through the rotation of the lower cone cutter. In addition, in order to quickly clamp and fix the above-mentioned grinder assembly in the groove for placing the bean grinding assembly, clamping blocks can also be symmetrically arranged on both sides of the bottom of the notch in the groove for placing the bean grinding assembly, and one end of the clamping block drives the clamping block to reciprocate through the cylinder solenoid valve, while the other end of the clamping block is clamped and placed in the notch of the groove for placing the bean grinding assembly. The structural design of the clamping block column is not limited to a raised screw installation column, and can also be an arc column with a raised circular bottom edge.

[0034] In summary, this mechanism is specifically a device that uses the data of the height difference between the upper and lower cone knives to find the initial gear position of the coffee grinder after it is assembled. This mechanism is designed to solve the problem of initial gear adjustment of the coffee grinder when the existing coffee machine products are manufactured and shipped. This mechanism is a device that uses four probes to detect the height difference of the four positions of the upper and lower cone knives to calculate whether the initial gear position has been reached, and is equipped with a micrometer measuring device to perform additional tests when the probe fails. The specific features of this mechanism are as follows: 1. A probe assembly is used to detect the height difference between the upper and lower cone knives, calculate the height difference between the upper and lower cone knives, and quickly determine the starting position of the cone knives when they leave the factory. 2. Two detection methods increase the fault tolerance rate. 3. Save costs. 4. It is convenient for operators to adjust the gear position of the grinder when it leaves the factory.

Claims

1. A coffee machine grinder initial gear position testing mechanism, wherein the main body (1) of the mechanism is a workbench, a working wall on one side of the working surface of the main body is provided with a display screen (2) and a probe assembly (3) that move up and down through a sliding rail shaft (17), a grinding bean assembly placement groove (16) is provided on the working surface of the main body below the probe assembly and is fixed to the working surface by a clamp, the grinder assembly (6) is aligned with the notch of the grinding bean assembly placement groove and is placed, a main body is provided on the circuit board of the display screen or the controller in the main body below the workbench, and a processor of the main body is connected to a data interface of the display screen by wireless or wired means; characterized in that A height difference micrometer (5) is provided on a bracket on the working wall of the main body (1) on one side of the sliding rail shaft (17). After the grinder assembly (6) is aligned with the notch of the grinding bean assembly placement slot (16) and placed, a start button is pressed on the display screen (2), and the left bean assembly clamp (14) and the right bean assembly clamp (18) of the clamp move toward the middle to clamp the grinder assembly in the grinding bean assembly placement slot. At the same time, the sliding rail shaft moves downward and drives the probe assembly (3) to move downward, and the probe (20) on the probe assembly contacts the height difference between the upper cone cutter (601) and the lower cone cutter (602) of the grinder assembly.

2. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that The height difference micrometer (5) comprises a micrometer (7), a fixed outer sleeve (8) and a fixed inner sleeve (10); one end of the micrometer inner connecting rod of the height difference micrometer extends out of the top; the other end of the connecting rod extending from the micrometer extends into the fixed inner sleeve through the fixed outer sleeve and the fixed inner sleeve; the fixed inner sleeve is fixed to the fixed outer sleeve by a screw (9) on one side of the fixed outer sleeve; a limiting groove at the connecting rod in the micrometer in the inner fixed inner sleeve is limited by another screw on one side of the inner fixed inner sleeve to move up and down in the inner fixed inner sleeve; a wireless transmission module and a battery are provided in the circuit board of the height difference micrometer; the circuit board in the micrometer is connected to the processor in the host through the wireless transmission module or a data cable.

3. The coffee machine grinder initial gear position testing mechanism according to claim 2, characterized in that The fixed outer sleeve (8) and the fixed inner sleeve (10) are provided with corresponding and aligned openings at one end corner of the bottom side, and the openings are respectively communicated with the bottom sleeves of the fixed outer sleeve and the fixed inner sleeve, and the machine screw (9) at the fixed inner sleeve is screwed into the fixed inner sleeve through one side of the opening.

4. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that The probe assembly (3) is provided with four probes (20), and the four probes respectively test whether the height differences of four positions of the upper cone cutter (601) and the lower cone cutter (602) in the grinder assembly (6) have reached the initial gear position, and display whether they are qualified on the display screen (2).

5. The coffee machine grinder initial gear position testing mechanism according to claim 4, characterized in that The four probes (20) of the probe assembly (3) are respectively arranged on the probe fixing plate (11); a groove is provided on the back of one side of the working wall of the main body symmetrical to the grinding bean assembly placement groove (16); an I-shaped sliding rail shaft (17) is provided at the groove; a component connecting plate (13) is provided in front of the sliding rail shaft; a probe assembly base (12) is provided at the front lower end of the component connecting plate; the probe assembly base is provided with four circular openings; the probe assembly base is provided with a circular groove; the probe fixing plate is provided in the groove; the groove fixing plate is provided with four circular openings corresponding to the four openings on the probe base; the probes pass through the circular openings of the probe fixing plate and the probe assembly base and are fixed therein; the component connecting plate above the probe assembly base is provided with the display screen (2).

6. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that The work surface of the workbench of the main body (1) is provided with a left clamp track (15) and a right clamp track (19) with two long strip-shaped slots symmetrically arranged on both sides, and the left clamp (14) and the right clamp (18) of the grinding bean assembly are respectively installed on the left clamp track and the right clamp track on both sides, and the grinding bean assembly placement groove (16) is provided in the middle of the work surface.

7. The coffee machine grinder initial gear position testing mechanism according to claim 6, characterized in that One end of the left bean assembly clamp (14) and the right bean assembly clamp (18) above the notch of the bean assembly placement groove (16) is respectively formed into an arc-shaped edge groove, and the arc-shaped edge grooves of the left bean assembly clamp and the right bean assembly clamp wrap around the outer diameter of the cylindrical segment shell of the clamping grinder assembly (6).

8. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that The sliding rail shaft (17) and the lead screw at the clamp are respectively provided with a manual mechanism and / or an automatic mechanism, one end of the lead screw at the automatic mechanism is provided with a stepping motor, and the other end of the lead screw is provided with a protruding rocker arm.

9. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that Clamping blocks are symmetrically arranged on both sides of the bottom of the notch of the grinding bean assembly placement groove (16), and one end of the clamping block is driven to reciprocate by a cylinder solenoid valve, while the other end of the clamping block is clamped on a clamping block column (603) protruding from the bottom of the grinder assembly (6) placed in the notch of the grinding bean assembly placement groove.

10. The coffee machine grinder initial gear position testing mechanism according to claim 1, characterized in that An integrated lower cone cutter adjustment platform is provided on one side of the working surface of the main body (1), and when the adjustment gear on the lower cone cutter adjustment platform meshes with the teeth of the coarse and fine adjustment toothed disc (604) of the grinder assembly (6), the coarse and fine adjustment toothed disc drives the upper cone cutter (601) of the grinder assembly to be adjusted to an initial gear position between the upper cone cutter and the lower cone cutter by rotating the lower cone cutter (602).

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